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-rw-r--r--fs/afs/Kconfig6
-rw-r--r--fs/afs/Makefile2
-rw-r--r--fs/afs/afs.h3
-rw-r--r--fs/afs/afs_vl.h1
-rw-r--r--fs/afs/callback.c345
-rw-r--r--fs/afs/cell.c19
-rw-r--r--fs/afs/cmservice.c67
-rw-r--r--fs/afs/dir.c1275
-rw-r--r--fs/afs/dir_silly.c198
-rw-r--r--fs/afs/dynroot.c93
-rw-r--r--fs/afs/file.c62
-rw-r--r--fs/afs/flock.c112
-rw-r--r--fs/afs/fs_operation.c247
-rw-r--r--fs/afs/fs_probe.c367
-rw-r--r--fs/afs/fsclient.c1318
-rw-r--r--fs/afs/inode.c564
-rw-r--r--fs/afs/internal.h546
-rw-r--r--fs/afs/main.c9
-rw-r--r--fs/afs/misc.c1
-rw-r--r--fs/afs/proc.c43
-rw-r--r--fs/afs/protocol_yfs.h2
-rw-r--r--fs/afs/rotate.c447
-rw-r--r--fs/afs/rxrpc.c51
-rw-r--r--fs/afs/security.c8
-rw-r--r--fs/afs/server.c305
-rw-r--r--fs/afs/server_list.c40
-rw-r--r--fs/afs/super.c107
-rw-r--r--fs/afs/vl_alias.c383
-rw-r--r--fs/afs/vl_probe.c18
-rw-r--r--fs/afs/vl_rotate.c8
-rw-r--r--fs/afs/vlclient.c146
-rw-r--r--fs/afs/volume.c154
-rw-r--r--fs/afs/write.c161
-rw-r--r--fs/afs/xattr.c300
-rw-r--r--fs/afs/yfsclient.c997
35 files changed, 4454 insertions, 3951 deletions
diff --git a/fs/afs/Kconfig b/fs/afs/Kconfig
index 3fb1f559e317..1ad211d72b3b 100644
--- a/fs/afs/Kconfig
+++ b/fs/afs/Kconfig
@@ -8,7 +8,7 @@ config AFS_FS
If you say Y here, you will get an experimental Andrew File System
driver. It currently only supports unsecured read-only AFS access.
- See <file:Documentation/filesystems/afs.txt> for more information.
+ See <file:Documentation/filesystems/afs.rst> for more information.
If unsure, say N.
@@ -18,7 +18,7 @@ config AFS_DEBUG
help
Say Y here to make runtime controllable debugging messages appear.
- See <file:Documentation/filesystems/afs.txt> for more information.
+ See <file:Documentation/filesystems/afs.rst> for more information.
If unsure, say N.
@@ -37,6 +37,6 @@ config AFS_DEBUG_CURSOR
the dmesg log if the server rotation algorithm fails to successfully
contact a server.
- See <file:Documentation/filesystems/afs.txt> for more information.
+ See <file:Documentation/filesystems/afs.rst> for more information.
If unsure, say N.
diff --git a/fs/afs/Makefile b/fs/afs/Makefile
index 10359bea7070..75c4e4043d1d 100644
--- a/fs/afs/Makefile
+++ b/fs/afs/Makefile
@@ -18,6 +18,7 @@ kafs-y := \
file.o \
flock.o \
fsclient.o \
+ fs_operation.o \
fs_probe.o \
inode.o \
main.o \
@@ -30,6 +31,7 @@ kafs-y := \
server_list.o \
super.o \
vlclient.o \
+ vl_alias.o \
vl_list.o \
vl_probe.o \
vl_rotate.o \
diff --git a/fs/afs/afs.h b/fs/afs/afs.h
index b6d49d646ade..432cb4b23961 100644
--- a/fs/afs/afs.h
+++ b/fs/afs/afs.h
@@ -10,7 +10,7 @@
#include <linux/in.h>
-#define AFS_MAXCELLNAME 64 /* Maximum length of a cell name */
+#define AFS_MAXCELLNAME 256 /* Maximum length of a cell name */
#define AFS_MAXVOLNAME 64 /* Maximum length of a volume name */
#define AFS_MAXNSERVERS 8 /* Maximum servers in a basic volume record */
#define AFS_NMAXNSERVERS 13 /* Maximum servers in a N/U-class volume record */
@@ -146,7 +146,6 @@ struct afs_file_status {
struct afs_status_cb {
struct afs_file_status status;
struct afs_callback callback;
- unsigned int cb_break; /* Pre-op callback break counter */
bool have_status; /* True if status record was retrieved */
bool have_cb; /* True if cb record was retrieved */
bool have_error; /* True if status.abort_code indicates an error */
diff --git a/fs/afs/afs_vl.h b/fs/afs/afs_vl.h
index e9b8029920ec..9c65ffb8a523 100644
--- a/fs/afs/afs_vl.h
+++ b/fs/afs/afs_vl.h
@@ -22,6 +22,7 @@ enum AFSVL_Operations {
VLGETENTRYBYNAMEU = 527, /* AFS Get VLDB entry by name (UUID-variant) */
VLGETADDRSU = 533, /* AFS Get addrs for fileserver */
YVLGETENDPOINTS = 64002, /* YFS Get endpoints for file/volume server */
+ YVLGETCELLNAME = 64014, /* YFS Get actual cell name */
VLGETCAPABILITIES = 65537, /* AFS Get server capabilities */
};
diff --git a/fs/afs/callback.c b/fs/afs/callback.c
index 2dca8df1a18d..7d9b23d981bf 100644
--- a/fs/afs/callback.c
+++ b/fs/afs/callback.c
@@ -21,192 +21,17 @@
#include "internal.h"
/*
- * Create volume and callback interests on a server.
- */
-static struct afs_cb_interest *afs_create_interest(struct afs_server *server,
- struct afs_vnode *vnode)
-{
- struct afs_vol_interest *new_vi, *vi;
- struct afs_cb_interest *new;
- struct hlist_node **pp;
-
- new_vi = kzalloc(sizeof(struct afs_vol_interest), GFP_KERNEL);
- if (!new_vi)
- return NULL;
-
- new = kzalloc(sizeof(struct afs_cb_interest), GFP_KERNEL);
- if (!new) {
- kfree(new_vi);
- return NULL;
- }
-
- new_vi->usage = 1;
- new_vi->vid = vnode->volume->vid;
- INIT_HLIST_NODE(&new_vi->srv_link);
- INIT_HLIST_HEAD(&new_vi->cb_interests);
-
- refcount_set(&new->usage, 1);
- new->sb = vnode->vfs_inode.i_sb;
- new->vid = vnode->volume->vid;
- new->server = afs_get_server(server, afs_server_trace_get_new_cbi);
- INIT_HLIST_NODE(&new->cb_vlink);
-
- write_lock(&server->cb_break_lock);
-
- for (pp = &server->cb_volumes.first; *pp; pp = &(*pp)->next) {
- vi = hlist_entry(*pp, struct afs_vol_interest, srv_link);
- if (vi->vid < new_vi->vid)
- continue;
- if (vi->vid > new_vi->vid)
- break;
- vi->usage++;
- goto found_vi;
- }
-
- new_vi->srv_link.pprev = pp;
- new_vi->srv_link.next = *pp;
- if (*pp)
- (*pp)->pprev = &new_vi->srv_link.next;
- *pp = &new_vi->srv_link;
- vi = new_vi;
- new_vi = NULL;
-found_vi:
-
- new->vol_interest = vi;
- hlist_add_head(&new->cb_vlink, &vi->cb_interests);
-
- write_unlock(&server->cb_break_lock);
- kfree(new_vi);
- return new;
-}
-
-/*
- * Set up an interest-in-callbacks record for a volume on a server and
- * register it with the server.
- * - Called with vnode->io_lock held.
- */
-int afs_register_server_cb_interest(struct afs_vnode *vnode,
- struct afs_server_list *slist,
- unsigned int index)
-{
- struct afs_server_entry *entry = &slist->servers[index];
- struct afs_cb_interest *cbi, *vcbi, *new, *old;
- struct afs_server *server = entry->server;
-
-again:
- vcbi = rcu_dereference_protected(vnode->cb_interest,
- lockdep_is_held(&vnode->io_lock));
- if (vcbi && likely(vcbi == entry->cb_interest))
- return 0;
-
- read_lock(&slist->lock);
- cbi = afs_get_cb_interest(entry->cb_interest);
- read_unlock(&slist->lock);
-
- if (vcbi) {
- if (vcbi == cbi) {
- afs_put_cb_interest(afs_v2net(vnode), cbi);
- return 0;
- }
-
- /* Use a new interest in the server list for the same server
- * rather than an old one that's still attached to a vnode.
- */
- if (cbi && vcbi->server == cbi->server) {
- write_seqlock(&vnode->cb_lock);
- old = rcu_dereference_protected(vnode->cb_interest,
- lockdep_is_held(&vnode->cb_lock.lock));
- rcu_assign_pointer(vnode->cb_interest, cbi);
- write_sequnlock(&vnode->cb_lock);
- afs_put_cb_interest(afs_v2net(vnode), old);
- return 0;
- }
-
- /* Re-use the one attached to the vnode. */
- if (!cbi && vcbi->server == server) {
- write_lock(&slist->lock);
- if (entry->cb_interest) {
- write_unlock(&slist->lock);
- afs_put_cb_interest(afs_v2net(vnode), cbi);
- goto again;
- }
-
- entry->cb_interest = cbi;
- write_unlock(&slist->lock);
- return 0;
- }
- }
-
- if (!cbi) {
- new = afs_create_interest(server, vnode);
- if (!new)
- return -ENOMEM;
-
- write_lock(&slist->lock);
- if (!entry->cb_interest) {
- entry->cb_interest = afs_get_cb_interest(new);
- cbi = new;
- new = NULL;
- } else {
- cbi = afs_get_cb_interest(entry->cb_interest);
- }
- write_unlock(&slist->lock);
- afs_put_cb_interest(afs_v2net(vnode), new);
- }
-
- ASSERT(cbi);
-
- /* Change the server the vnode is using. This entails scrubbing any
- * interest the vnode had in the previous server it was using.
- */
- write_seqlock(&vnode->cb_lock);
-
- old = rcu_dereference_protected(vnode->cb_interest,
- lockdep_is_held(&vnode->cb_lock.lock));
- rcu_assign_pointer(vnode->cb_interest, cbi);
- vnode->cb_s_break = cbi->server->cb_s_break;
- vnode->cb_v_break = vnode->volume->cb_v_break;
- clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
-
- write_sequnlock(&vnode->cb_lock);
- afs_put_cb_interest(afs_v2net(vnode), old);
- return 0;
-}
-
-/*
- * Remove an interest on a server.
- */
-void afs_put_cb_interest(struct afs_net *net, struct afs_cb_interest *cbi)
-{
- struct afs_vol_interest *vi;
-
- if (cbi && refcount_dec_and_test(&cbi->usage)) {
- if (!hlist_unhashed(&cbi->cb_vlink)) {
- write_lock(&cbi->server->cb_break_lock);
-
- hlist_del_init(&cbi->cb_vlink);
- vi = cbi->vol_interest;
- cbi->vol_interest = NULL;
- if (--vi->usage == 0)
- hlist_del(&vi->srv_link);
- else
- vi = NULL;
-
- write_unlock(&cbi->server->cb_break_lock);
- if (vi)
- kfree_rcu(vi, rcu);
- afs_put_server(net, cbi->server, afs_server_trace_put_cbi);
- }
- kfree_rcu(cbi, rcu);
- }
-}
-
-/*
- * allow the fileserver to request callback state (re-)initialisation
+ * Allow the fileserver to request callback state (re-)initialisation.
+ * Unfortunately, UUIDs are not guaranteed unique.
*/
void afs_init_callback_state(struct afs_server *server)
{
- server->cb_s_break++;
+ rcu_read_lock();
+ do {
+ server->cb_s_break++;
+ server = rcu_dereference(server->uuid_next);
+ } while (0);
+ rcu_read_unlock();
}
/*
@@ -238,69 +63,109 @@ void afs_break_callback(struct afs_vnode *vnode, enum afs_cb_break_reason reason
}
/*
+ * Look up a volume by volume ID under RCU conditions.
+ */
+static struct afs_volume *afs_lookup_volume_rcu(struct afs_cell *cell,
+ afs_volid_t vid)
+{
+ struct afs_volume *volume = NULL;
+ struct rb_node *p;
+ int seq = 0;
+
+ do {
+ /* Unfortunately, rbtree walking doesn't give reliable results
+ * under just the RCU read lock, so we have to check for
+ * changes.
+ */
+ read_seqbegin_or_lock(&cell->volume_lock, &seq);
+
+ p = rcu_dereference_raw(cell->volumes.rb_node);
+ while (p) {
+ volume = rb_entry(p, struct afs_volume, cell_node);
+
+ if (volume->vid < vid)
+ p = rcu_dereference_raw(p->rb_left);
+ else if (volume->vid > vid)
+ p = rcu_dereference_raw(p->rb_right);
+ else
+ break;
+ volume = NULL;
+ }
+
+ } while (need_seqretry(&cell->volume_lock, seq));
+
+ done_seqretry(&cell->volume_lock, seq);
+ return volume;
+}
+
+/*
* allow the fileserver to explicitly break one callback
* - happens when
* - the backing file is changed
* - a lock is released
*/
-static void afs_break_one_callback(struct afs_server *server,
+static void afs_break_one_callback(struct afs_volume *volume,
struct afs_fid *fid)
{
- struct afs_vol_interest *vi;
- struct afs_cb_interest *cbi;
- struct afs_iget_data data;
+ struct super_block *sb;
struct afs_vnode *vnode;
struct inode *inode;
- read_lock(&server->cb_break_lock);
- hlist_for_each_entry(vi, &server->cb_volumes, srv_link) {
- if (vi->vid < fid->vid)
- continue;
- if (vi->vid > fid->vid) {
- vi = NULL;
- break;
- }
- //atomic_inc(&vi->usage);
- break;
+ if (fid->vnode == 0 && fid->unique == 0) {
+ /* The callback break applies to an entire volume. */
+ write_lock(&volume->cb_v_break_lock);
+ volume->cb_v_break++;
+ trace_afs_cb_break(fid, volume->cb_v_break,
+ afs_cb_break_for_volume_callback, false);
+ write_unlock(&volume->cb_v_break_lock);
+ return;
}
- /* TODO: Find all matching volumes if we couldn't match the server and
- * break them anyway.
+ /* See if we can find a matching inode - even an I_NEW inode needs to
+ * be marked as it can have its callback broken before we finish
+ * setting up the local inode.
*/
- if (!vi)
- goto out;
+ sb = rcu_dereference(volume->sb);
+ if (!sb)
+ return;
+
+ inode = find_inode_rcu(sb, fid->vnode, afs_ilookup5_test_by_fid, fid);
+ if (inode) {
+ vnode = AFS_FS_I(inode);
+ afs_break_callback(vnode, afs_cb_break_for_callback);
+ } else {
+ trace_afs_cb_miss(fid, afs_cb_break_for_callback);
+ }
+}
+
+static void afs_break_some_callbacks(struct afs_server *server,
+ struct afs_callback_break *cbb,
+ size_t *_count)
+{
+ struct afs_callback_break *residue = cbb;
+ struct afs_volume *volume;
+ afs_volid_t vid = cbb->fid.vid;
+ size_t i;
- /* Step through all interested superblocks. There may be more than one
- * because of cell aliasing.
+ volume = afs_lookup_volume_rcu(server->cell, vid);
+
+ /* TODO: Find all matching volumes if we couldn't match the server and
+ * break them anyway.
*/
- hlist_for_each_entry(cbi, &vi->cb_interests, cb_vlink) {
- if (fid->vnode == 0 && fid->unique == 0) {
- /* The callback break applies to an entire volume. */
- struct afs_super_info *as = AFS_FS_S(cbi->sb);
- struct afs_volume *volume = as->volume;
- write_lock(&volume->cb_v_break_lock);
- volume->cb_v_break++;
- trace_afs_cb_break(fid, volume->cb_v_break,
- afs_cb_break_for_volume_callback, false);
- write_unlock(&volume->cb_v_break_lock);
+ for (i = *_count; i > 0; cbb++, i--) {
+ if (cbb->fid.vid == vid) {
+ _debug("- Fid { vl=%08llx n=%llu u=%u }",
+ cbb->fid.vid,
+ cbb->fid.vnode,
+ cbb->fid.unique);
+ --*_count;
+ if (volume)
+ afs_break_one_callback(volume, &cbb->fid);
} else {
- data.volume = NULL;
- data.fid = *fid;
- inode = ilookup5_nowait(cbi->sb, fid->vnode,
- afs_iget5_test, &data);
- if (inode) {
- vnode = AFS_FS_I(inode);
- afs_break_callback(vnode, afs_cb_break_for_callback);
- iput(inode);
- } else {
- trace_afs_cb_miss(fid, afs_cb_break_for_callback);
- }
+ *residue++ = *cbb;
}
}
-
-out:
- read_unlock(&server->cb_break_lock);
}
/*
@@ -313,29 +178,11 @@ void afs_break_callbacks(struct afs_server *server, size_t count,
ASSERT(server != NULL);
- /* TODO: Sort the callback break list by volume ID */
+ rcu_read_lock();
- for (; count > 0; callbacks++, count--) {
- _debug("- Fid { vl=%08llx n=%llu u=%u }",
- callbacks->fid.vid,
- callbacks->fid.vnode,
- callbacks->fid.unique);
- afs_break_one_callback(server, &callbacks->fid);
- }
+ while (count > 0)
+ afs_break_some_callbacks(server, callbacks, &count);
- _leave("");
+ rcu_read_unlock();
return;
}
-
-/*
- * Clear the callback interests in a server list.
- */
-void afs_clear_callback_interests(struct afs_net *net, struct afs_server_list *slist)
-{
- int i;
-
- for (i = 0; i < slist->nr_servers; i++) {
- afs_put_cb_interest(net, slist->servers[i].cb_interest);
- slist->servers[i].cb_interest = NULL;
- }
-}
diff --git a/fs/afs/cell.c b/fs/afs/cell.c
index 78ba5f932287..5b79cdceefa0 100644
--- a/fs/afs/cell.c
+++ b/fs/afs/cell.c
@@ -154,16 +154,27 @@ static struct afs_cell *afs_alloc_cell(struct afs_net *net,
return ERR_PTR(-ENOMEM);
}
+ cell->name = kmalloc(namelen + 1, GFP_KERNEL);
+ if (!cell->name) {
+ kfree(cell);
+ return ERR_PTR(-ENOMEM);
+ }
+
cell->net = net;
cell->name_len = namelen;
for (i = 0; i < namelen; i++)
cell->name[i] = tolower(name[i]);
+ cell->name[i] = 0;
atomic_set(&cell->usage, 2);
INIT_WORK(&cell->manager, afs_manage_cell);
- INIT_LIST_HEAD(&cell->proc_volumes);
- rwlock_init(&cell->proc_lock);
+ cell->volumes = RB_ROOT;
+ INIT_HLIST_HEAD(&cell->proc_volumes);
+ seqlock_init(&cell->volume_lock);
+ cell->fs_servers = RB_ROOT;
+ seqlock_init(&cell->fs_lock);
rwlock_init(&cell->vl_servers_lock);
+ cell->flags = (1 << AFS_CELL_FL_CHECK_ALIAS);
/* Provide a VL server list, filling it in if we were given a list of
* addresses to use.
@@ -203,6 +214,7 @@ parse_failed:
if (ret == -EINVAL)
printk(KERN_ERR "kAFS: bad VL server IP address\n");
error:
+ kfree(cell->name);
kfree(cell);
_leave(" = %d", ret);
return ERR_PTR(ret);
@@ -481,8 +493,11 @@ static void afs_cell_destroy(struct rcu_head *rcu)
ASSERTCMP(atomic_read(&cell->usage), ==, 0);
+ afs_put_volume(cell->net, cell->root_volume, afs_volume_trace_put_cell_root);
afs_put_vlserverlist(cell->net, rcu_access_pointer(cell->vl_servers));
+ afs_put_cell(cell->net, cell->alias_of);
key_put(cell->anonymous_key);
+ kfree(cell->name);
kfree(cell);
_leave(" [destroyed]");
diff --git a/fs/afs/cmservice.c b/fs/afs/cmservice.c
index 6765949b3aab..bef413818af7 100644
--- a/fs/afs/cmservice.c
+++ b/fs/afs/cmservice.c
@@ -118,8 +118,6 @@ bool afs_cm_incoming_call(struct afs_call *call)
{
_enter("{%u, CB.OP %u}", call->service_id, call->operation_ID);
- call->epoch = rxrpc_kernel_get_epoch(call->net->socket, call->rxcall);
-
switch (call->operation_ID) {
case CBCallBack:
call->type = &afs_SRXCBCallBack;
@@ -150,49 +148,6 @@ bool afs_cm_incoming_call(struct afs_call *call)
}
/*
- * Record a probe to the cache manager from a server.
- */
-static int afs_record_cm_probe(struct afs_call *call, struct afs_server *server)
-{
- _enter("");
-
- if (test_bit(AFS_SERVER_FL_HAVE_EPOCH, &server->flags) &&
- !test_bit(AFS_SERVER_FL_PROBING, &server->flags)) {
- if (server->cm_epoch == call->epoch)
- return 0;
-
- if (!server->probe.said_rebooted) {
- pr_notice("kAFS: FS rebooted %pU\n", &server->uuid);
- server->probe.said_rebooted = true;
- }
- }
-
- spin_lock(&server->probe_lock);
-
- if (!test_bit(AFS_SERVER_FL_HAVE_EPOCH, &server->flags)) {
- server->cm_epoch = call->epoch;
- server->probe.cm_epoch = call->epoch;
- goto out;
- }
-
- if (server->probe.cm_probed &&
- call->epoch != server->probe.cm_epoch &&
- !server->probe.said_inconsistent) {
- pr_notice("kAFS: FS endpoints inconsistent %pU\n",
- &server->uuid);
- server->probe.said_inconsistent = true;
- }
-
- if (!server->probe.cm_probed || call->epoch == server->cm_epoch)
- server->probe.cm_epoch = server->cm_epoch;
-
-out:
- server->probe.cm_probed = true;
- spin_unlock(&server->probe_lock);
- return 0;
-}
-
-/*
* Find the server record by peer address and record a probe to the cache
* manager from a server.
*/
@@ -210,7 +165,7 @@ static int afs_find_cm_server_by_peer(struct afs_call *call)
}
call->server = server;
- return afs_record_cm_probe(call, server);
+ return 0;
}
/*
@@ -231,7 +186,7 @@ static int afs_find_cm_server_by_uuid(struct afs_call *call,
}
call->server = server;
- return afs_record_cm_probe(call, server);
+ return 0;
}
/*
@@ -268,7 +223,9 @@ static void SRXAFSCB_CallBack(struct work_struct *work)
* to maintain cache coherency.
*/
if (call->server) {
- trace_afs_server(call->server, atomic_read(&call->server->usage),
+ trace_afs_server(call->server,
+ atomic_read(&call->server->ref),
+ atomic_read(&call->server->active),
afs_server_trace_callback);
afs_break_callbacks(call->server, call->count, call->request);
}
@@ -305,8 +262,7 @@ static int afs_deliver_cb_callback(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("FID count: %u", call->count);
if (call->count > AFSCBMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_cb_fid_count);
+ return afs_protocol_error(call, afs_eproto_cb_fid_count);
call->buffer = kmalloc(array3_size(call->count, 3, 4),
GFP_KERNEL);
@@ -351,8 +307,7 @@ static int afs_deliver_cb_callback(struct afs_call *call)
call->count2 = ntohl(call->tmp);
_debug("CB count: %u", call->count2);
if (call->count2 != call->count && call->count2 != 0)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_cb_count);
+ return afs_protocol_error(call, afs_eproto_cb_count);
call->iter = &call->def_iter;
iov_iter_discard(&call->def_iter, READ, call->count2 * 3 * 4);
call->unmarshall++;
@@ -509,7 +464,8 @@ static int afs_deliver_cb_probe(struct afs_call *call)
}
/*
- * allow the fileserver to quickly find out if the fileserver has been rebooted
+ * Allow the fileserver to quickly find out if the cache manager has been
+ * rebooted.
*/
static void SRXAFSCB_ProbeUuid(struct work_struct *work)
{
@@ -581,7 +537,7 @@ static int afs_deliver_cb_probe_uuid(struct afs_call *call)
if (!afs_check_call_state(call, AFS_CALL_SV_REPLYING))
return afs_io_error(call, afs_io_error_cm_reply);
- return afs_find_cm_server_by_uuid(call, call->request);
+ return afs_find_cm_server_by_peer(call);
}
/*
@@ -672,8 +628,7 @@ static int afs_deliver_yfs_cb_callback(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("FID count: %u", call->count);
if (call->count > YFSCBMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_cb_fid_count);
+ return afs_protocol_error(call, afs_eproto_cb_fid_count);
size = array_size(call->count, sizeof(struct yfs_xdr_YFSFid));
call->buffer = kmalloc(size, GFP_KERNEL);
diff --git a/fs/afs/dir.c b/fs/afs/dir.c
index 5c794f4b051a..96757f3abd74 100644
--- a/fs/afs/dir.c
+++ b/fs/afs/dir.c
@@ -99,8 +99,6 @@ struct afs_lookup_cookie {
bool found;
bool one_only;
unsigned short nr_fids;
- struct inode **inodes;
- struct afs_status_cb *statuses;
struct afs_fid fids[50];
};
@@ -618,8 +616,8 @@ static int afs_lookup_filldir(struct dir_context *ctx, const char *name,
}
} else if (cookie->name.len == nlen &&
memcmp(cookie->name.name, name, nlen) == 0) {
- cookie->fids[0].vnode = ino;
- cookie->fids[0].unique = dtype;
+ cookie->fids[1].vnode = ino;
+ cookie->fids[1].unique = dtype;
cookie->found = 1;
if (cookie->one_only)
return -1;
@@ -631,6 +629,112 @@ static int afs_lookup_filldir(struct dir_context *ctx, const char *name,
}
/*
+ * Deal with the result of a successful lookup operation. Turn all the files
+ * into inodes and save the first one - which is the one we actually want.
+ */
+static void afs_do_lookup_success(struct afs_operation *op)
+{
+ struct afs_vnode_param *vp;
+ struct afs_vnode *vnode;
+ struct inode *inode;
+ u32 abort_code;
+ int i;
+
+ _enter("");
+
+ for (i = 0; i < op->nr_files; i++) {
+ switch (i) {
+ case 0:
+ vp = &op->file[0];
+ abort_code = vp->scb.status.abort_code;
+ if (abort_code != 0) {
+ op->ac.abort_code = abort_code;
+ op->error = afs_abort_to_error(abort_code);
+ }
+ break;
+
+ case 1:
+ vp = &op->file[1];
+ break;
+
+ default:
+ vp = &op->more_files[i - 2];
+ break;
+ }
+
+ if (!vp->scb.have_status && !vp->scb.have_error)
+ continue;
+
+ _debug("do [%u]", i);
+ if (vp->vnode) {
+ if (!test_bit(AFS_VNODE_UNSET, &vp->vnode->flags))
+ afs_vnode_commit_status(op, vp);
+ } else if (vp->scb.status.abort_code == 0) {
+ inode = afs_iget(op, vp);
+ if (!IS_ERR(inode)) {
+ vnode = AFS_FS_I(inode);
+ afs_cache_permit(vnode, op->key,
+ 0 /* Assume vnode->cb_break is 0 */ +
+ op->cb_v_break,
+ &vp->scb);
+ vp->vnode = vnode;
+ vp->put_vnode = true;
+ }
+ } else {
+ _debug("- abort %d %llx:%llx.%x",
+ vp->scb.status.abort_code,
+ vp->fid.vid, vp->fid.vnode, vp->fid.unique);
+ }
+ }
+
+ _leave("");
+}
+
+static const struct afs_operation_ops afs_inline_bulk_status_operation = {
+ .issue_afs_rpc = afs_fs_inline_bulk_status,
+ .issue_yfs_rpc = yfs_fs_inline_bulk_status,
+ .success = afs_do_lookup_success,
+};
+
+static const struct afs_operation_ops afs_lookup_fetch_status_operation = {
+ .issue_afs_rpc = afs_fs_fetch_status,
+ .issue_yfs_rpc = yfs_fs_fetch_status,
+ .success = afs_do_lookup_success,
+ .aborted = afs_check_for_remote_deletion,
+};
+
+/*
+ * See if we know that the server we expect to use doesn't support
+ * FS.InlineBulkStatus.
+ */
+static bool afs_server_supports_ibulk(struct afs_vnode *dvnode)
+{
+ struct afs_server_list *slist;
+ struct afs_volume *volume = dvnode->volume;
+ struct afs_server *server;
+ bool ret = true;
+ int i;
+
+ if (!test_bit(AFS_VOLUME_MAYBE_NO_IBULK, &volume->flags))
+ return true;
+
+ rcu_read_lock();
+ slist = rcu_dereference(volume->servers);
+
+ for (i = 0; i < slist->nr_servers; i++) {
+ server = slist->servers[i].server;
+ if (server == dvnode->cb_server) {
+ if (test_bit(AFS_SERVER_FL_NO_IBULK, &server->flags))
+ ret = false;
+ break;
+ }
+ }
+
+ rcu_read_unlock();
+ return ret;
+}
+
+/*
* Do a lookup in a directory. We make use of bulk lookup to query a slew of
* files in one go and create inodes for them. The inode of the file we were
* asked for is returned.
@@ -639,16 +743,13 @@ static struct inode *afs_do_lookup(struct inode *dir, struct dentry *dentry,
struct key *key)
{
struct afs_lookup_cookie *cookie;
- struct afs_cb_interest *dcbi, *cbi = NULL;
- struct afs_super_info *as = dir->i_sb->s_fs_info;
- struct afs_status_cb *scb;
- struct afs_iget_data iget_data;
- struct afs_fs_cursor fc;
- struct afs_server *server;
+ struct afs_vnode_param *vp;
+ struct afs_operation *op;
struct afs_vnode *dvnode = AFS_FS_I(dir), *vnode;
struct inode *inode = NULL, *ti;
afs_dataversion_t data_version = READ_ONCE(dvnode->status.data_version);
- int ret, i;
+ long ret;
+ int i;
_enter("{%lu},%p{%pd},", dir->i_ino, dentry, dentry);
@@ -656,72 +757,74 @@ static struct inode *afs_do_lookup(struct inode *dir, struct dentry *dentry,
if (!cookie)
return ERR_PTR(-ENOMEM);
+ for (i = 0; i < ARRAY_SIZE(cookie->fids); i++)
+ cookie->fids[i].vid = dvnode->fid.vid;
cookie->ctx.actor = afs_lookup_filldir;
cookie->name = dentry->d_name;
- cookie->nr_fids = 1; /* slot 0 is saved for the fid we actually want */
-
- read_seqlock_excl(&dvnode->cb_lock);
- dcbi = rcu_dereference_protected(dvnode->cb_interest,
- lockdep_is_held(&dvnode->cb_lock.lock));
- if (dcbi) {
- server = dcbi->server;
- if (server &&
- test_bit(AFS_SERVER_FL_NO_IBULK, &server->flags))
- cookie->one_only = true;
- }
- read_sequnlock_excl(&dvnode->cb_lock);
+ cookie->nr_fids = 2; /* slot 0 is saved for the fid we actually want
+ * and slot 1 for the directory */
- for (i = 0; i < 50; i++)
- cookie->fids[i].vid = as->volume->vid;
+ if (!afs_server_supports_ibulk(dvnode))
+ cookie->one_only = true;
/* search the directory */
ret = afs_dir_iterate(dir, &cookie->ctx, key, &data_version);
- if (ret < 0) {
- inode = ERR_PTR(ret);
+ if (ret < 0)
goto out;
- }
dentry->d_fsdata = (void *)(unsigned long)data_version;
- inode = ERR_PTR(-ENOENT);
+ ret = -ENOENT;
if (!cookie->found)
goto out;
/* Check to see if we already have an inode for the primary fid. */
- iget_data.fid = cookie->fids[0];
- iget_data.volume = dvnode->volume;
- iget_data.cb_v_break = dvnode->volume->cb_v_break;
- iget_data.cb_s_break = 0;
- inode = ilookup5(dir->i_sb, cookie->fids[0].vnode,
- afs_iget5_test, &iget_data);
+ inode = ilookup5(dir->i_sb, cookie->fids[1].vnode,
+ afs_ilookup5_test_by_fid, &cookie->fids[1]);
if (inode)
- goto out;
+ goto out; /* We do */
- /* Need space for examining all the selected files */
- inode = ERR_PTR(-ENOMEM);
- cookie->statuses = kvcalloc(cookie->nr_fids, sizeof(struct afs_status_cb),
- GFP_KERNEL);
- if (!cookie->statuses)
+ /* Okay, we didn't find it. We need to query the server - and whilst
+ * we're doing that, we're going to attempt to look up a bunch of other
+ * vnodes also.
+ */
+ op = afs_alloc_operation(NULL, dvnode->volume);
+ if (IS_ERR(op)) {
+ ret = PTR_ERR(op);
goto out;
+ }
- cookie->inodes = kcalloc(cookie->nr_fids, sizeof(struct inode *),
- GFP_KERNEL);
- if (!cookie->inodes)
- goto out_s;
+ afs_op_set_vnode(op, 0, dvnode);
+ afs_op_set_fid(op, 1, &cookie->fids[1]);
- for (i = 1; i < cookie->nr_fids; i++) {
- scb = &cookie->statuses[i];
+ op->nr_files = cookie->nr_fids;
+ _debug("nr_files %u", op->nr_files);
- /* Find any inodes that already exist and get their
- * callback counters.
- */
- iget_data.fid = cookie->fids[i];
- ti = ilookup5_nowait(dir->i_sb, iget_data.fid.vnode,
- afs_iget5_test, &iget_data);
- if (!IS_ERR_OR_NULL(ti)) {
- vnode = AFS_FS_I(ti);
- scb->cb_break = afs_calc_vnode_cb_break(vnode);
- cookie->inodes[i] = ti;
+ /* Need space for examining all the selected files */
+ op->error = -ENOMEM;
+ if (op->nr_files > 2) {
+ op->more_files = kvcalloc(op->nr_files - 2,
+ sizeof(struct afs_vnode_param),
+ GFP_KERNEL);
+ if (!op->more_files)
+ goto out_op;
+
+ for (i = 2; i < op->nr_files; i++) {
+ vp = &op->more_files[i - 2];
+ vp->fid = cookie->fids[i];
+
+ /* Find any inodes that already exist and get their
+ * callback counters.
+ */
+ ti = ilookup5_nowait(dir->i_sb, vp->fid.vnode,
+ afs_ilookup5_test_by_fid, &vp->fid);
+ if (!IS_ERR_OR_NULL(ti)) {
+ vnode = AFS_FS_I(ti);
+ vp->dv_before = vnode->status.data_version;
+ vp->cb_break_before = afs_calc_vnode_cb_break(vnode);
+ vp->vnode = vnode;
+ vp->put_vnode = true;
+ }
}
}
@@ -729,120 +832,40 @@ static struct inode *afs_do_lookup(struct inode *dir, struct dentry *dentry,
* lookups contained therein are stored in the reply without aborting
* the whole operation.
*/
- if (cookie->one_only)
- goto no_inline_bulk_status;
-
- inode = ERR_PTR(-ERESTARTSYS);
- if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- while (afs_select_fileserver(&fc)) {
- if (test_bit(AFS_SERVER_FL_NO_IBULK,
- &fc.cbi->server->flags)) {
- fc.ac.abort_code = RX_INVALID_OPERATION;
- fc.ac.error = -ECONNABORTED;
- break;
- }
- iget_data.cb_v_break = dvnode->volume->cb_v_break;
- iget_data.cb_s_break = fc.cbi->server->cb_s_break;
- afs_fs_inline_bulk_status(&fc,
- afs_v2net(dvnode),
- cookie->fids,
- cookie->statuses,
- cookie->nr_fids, NULL);
- }
-
- if (fc.ac.error == 0)
- cbi = afs_get_cb_interest(fc.cbi);
- if (fc.ac.abort_code == RX_INVALID_OPERATION)
- set_bit(AFS_SERVER_FL_NO_IBULK, &fc.cbi->server->flags);
- inode = ERR_PTR(afs_end_vnode_operation(&fc));
+ op->error = -ENOTSUPP;
+ if (!cookie->one_only) {
+ op->ops = &afs_inline_bulk_status_operation;
+ afs_begin_vnode_operation(op);
+ afs_wait_for_operation(op);
}
- if (!IS_ERR(inode))
- goto success;
- if (fc.ac.abort_code != RX_INVALID_OPERATION)
- goto out_c;
-
-no_inline_bulk_status:
- /* We could try FS.BulkStatus next, but this aborts the entire op if
- * any of the lookups fails - so, for the moment, revert to
- * FS.FetchStatus for just the primary fid.
- */
- inode = ERR_PTR(-ERESTARTSYS);
- if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- while (afs_select_fileserver(&fc)) {
- iget_data.cb_v_break = dvnode->volume->cb_v_break;
- iget_data.cb_s_break = fc.cbi->server->cb_s_break;
- scb = &cookie->statuses[0];
- afs_fs_fetch_status(&fc,
- afs_v2net(dvnode),
- cookie->fids,
- scb,
- NULL);
- }
-
- if (fc.ac.error == 0)
- cbi = afs_get_cb_interest(fc.cbi);
- inode = ERR_PTR(afs_end_vnode_operation(&fc));
+ if (op->error == -ENOTSUPP) {
+ /* We could try FS.BulkStatus next, but this aborts the entire
+ * op if any of the lookups fails - so, for the moment, revert
+ * to FS.FetchStatus for op->file[1].
+ */
+ op->fetch_status.which = 1;
+ op->ops = &afs_lookup_fetch_status_operation;
+ afs_begin_vnode_operation(op);
+ afs_wait_for_operation(op);
}
+ inode = ERR_PTR(op->error);
- if (IS_ERR(inode))
- goto out_c;
-
-success:
- /* Turn all the files into inodes and save the first one - which is the
- * one we actually want.
- */
- scb = &cookie->statuses[0];
- if (scb->status.abort_code != 0)
- inode = ERR_PTR(afs_abort_to_error(scb->status.abort_code));
-
- for (i = 0; i < cookie->nr_fids; i++) {
- struct afs_status_cb *scb = &cookie->statuses[i];
-
- if (!scb->have_status && !scb->have_error)
- continue;
-
- if (cookie->inodes[i]) {
- struct afs_vnode *iv = AFS_FS_I(cookie->inodes[i]);
-
- if (test_bit(AFS_VNODE_UNSET, &iv->flags))
- continue;
-
- afs_vnode_commit_status(&fc, iv,
- scb->cb_break, NULL, scb);
- continue;
- }
-
- if (scb->status.abort_code != 0)
- continue;
-
- iget_data.fid = cookie->fids[i];
- ti = afs_iget(dir->i_sb, key, &iget_data, scb, cbi, dvnode);
- if (!IS_ERR(ti))
- afs_cache_permit(AFS_FS_I(ti), key,
- 0 /* Assume vnode->cb_break is 0 */ +
- iget_data.cb_v_break,
- scb);
- if (i == 0) {
- inode = ti;
- } else {
- if (!IS_ERR(ti))
- iput(ti);
- }
+out_op:
+ if (op->error == 0) {
+ inode = &op->file[1].vnode->vfs_inode;
+ op->file[1].vnode = NULL;
}
-out_c:
- afs_put_cb_interest(afs_v2net(dvnode), cbi);
- if (cookie->inodes) {
- for (i = 0; i < cookie->nr_fids; i++)
- iput(cookie->inodes[i]);
- kfree(cookie->inodes);
- }
-out_s:
- kvfree(cookie->statuses);
+ if (op->file[0].scb.have_status)
+ dentry->d_fsdata = (void *)(unsigned long)op->file[0].scb.status.data_version;
+ else
+ dentry->d_fsdata = (void *)(unsigned long)op->file[0].dv_before;
+ ret = afs_put_operation(op);
out:
kfree(cookie);
- return inode;
+ _leave("");
+ return inode ?: ERR_PTR(ret);
}
/*
@@ -958,6 +981,7 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
if (!IS_ERR_OR_NULL(inode))
fid = AFS_FS_I(inode)->fid;
+ _debug("splice %p", dentry->d_inode);
d = d_splice_alias(inode, dentry);
if (!IS_ERR_OR_NULL(d)) {
d->d_fsdata = dentry->d_fsdata;
@@ -965,6 +989,7 @@ static struct dentry *afs_lookup(struct inode *dir, struct dentry *dentry,
} else {
trace_afs_lookup(dvnode, &dentry->d_name, &fid);
}
+ _leave("");
return d;
}
@@ -1032,7 +1057,7 @@ static int afs_d_revalidate(struct dentry *dentry, unsigned int flags)
struct dentry *parent;
struct inode *inode;
struct key *key;
- afs_dataversion_t dir_version;
+ afs_dataversion_t dir_version, invalid_before;
long de_version;
int ret;
@@ -1084,8 +1109,8 @@ static int afs_d_revalidate(struct dentry *dentry, unsigned int flags)
if (de_version == (long)dir_version)
goto out_valid_noupdate;
- dir_version = dir->invalid_before;
- if (de_version - (long)dir_version >= 0)
+ invalid_before = dir->invalid_before;
+ if (de_version - (long)invalid_before >= 0)
goto out_valid;
_debug("dir modified");
@@ -1212,128 +1237,113 @@ void afs_d_release(struct dentry *dentry)
_enter("%pd", dentry);
}
+void afs_check_for_remote_deletion(struct afs_operation *op)
+{
+ struct afs_vnode *vnode = op->file[0].vnode;
+
+ switch (op->ac.abort_code) {
+ case VNOVNODE:
+ set_bit(AFS_VNODE_DELETED, &vnode->flags);
+ afs_break_callback(vnode, afs_cb_break_for_deleted);
+ }
+}
+
/*
* Create a new inode for create/mkdir/symlink
*/
-static void afs_vnode_new_inode(struct afs_fs_cursor *fc,
- struct dentry *new_dentry,
- struct afs_iget_data *new_data,
- struct afs_status_cb *new_scb)
+static void afs_vnode_new_inode(struct afs_operation *op)
{
+ struct afs_vnode_param *vp = &op->file[1];
struct afs_vnode *vnode;
struct inode *inode;
- if (fc->ac.error < 0)
- return;
+ _enter("");
- inode = afs_iget(fc->vnode->vfs_inode.i_sb, fc->key,
- new_data, new_scb, fc->cbi, fc->vnode);
+ ASSERTCMP(op->error, ==, 0);
+
+ inode = afs_iget(op, vp);
if (IS_ERR(inode)) {
/* ENOMEM or EINTR at a really inconvenient time - just abandon
* the new directory on the server.
*/
- fc->ac.error = PTR_ERR(inode);
+ op->error = PTR_ERR(inode);
return;
}
vnode = AFS_FS_I(inode);
set_bit(AFS_VNODE_NEW_CONTENT, &vnode->flags);
- if (fc->ac.error == 0)
- afs_cache_permit(vnode, fc->key, vnode->cb_break, new_scb);
- d_instantiate(new_dentry, inode);
+ if (!op->error)
+ afs_cache_permit(vnode, op->key, vnode->cb_break, &vp->scb);
+ d_instantiate(op->dentry, inode);
}
-static void afs_prep_for_new_inode(struct afs_fs_cursor *fc,
- struct afs_iget_data *iget_data)
+static void afs_create_success(struct afs_operation *op)
{
- iget_data->volume = fc->vnode->volume;
- iget_data->cb_v_break = fc->vnode->volume->cb_v_break;
- iget_data->cb_s_break = fc->cbi->server->cb_s_break;
+ _enter("op=%08x", op->debug_id);
+ op->ctime = op->file[0].scb.status.mtime_client;
+ afs_vnode_commit_status(op, &op->file[0]);
+ afs_update_dentry_version(op, &op->file[0], op->dentry);
+ afs_vnode_new_inode(op);
}
-/*
- * Note that a dentry got changed. We need to set d_fsdata to the data version
- * number derived from the result of the operation. It doesn't matter if
- * d_fsdata goes backwards as we'll just revalidate.
- */
-static void afs_update_dentry_version(struct afs_fs_cursor *fc,
- struct dentry *dentry,
- struct afs_status_cb *scb)
+static void afs_create_edit_dir(struct afs_operation *op)
+{
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
+ struct afs_vnode *dvnode = dvp->vnode;
+
+ _enter("op=%08x", op->debug_id);
+
+ down_write(&dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags) &&
+ dvnode->status.data_version == dvp->dv_before + dvp->dv_delta)
+ afs_edit_dir_add(dvnode, &op->dentry->d_name, &vp->fid,
+ op->create.reason);
+ up_write(&dvnode->validate_lock);
+}
+
+static void afs_create_put(struct afs_operation *op)
{
- if (fc->ac.error == 0)
- dentry->d_fsdata =
- (void *)(unsigned long)scb->status.data_version;
+ _enter("op=%08x", op->debug_id);
+
+ if (op->error)
+ d_drop(op->dentry);
}
+static const struct afs_operation_ops afs_mkdir_operation = {
+ .issue_afs_rpc = afs_fs_make_dir,
+ .issue_yfs_rpc = yfs_fs_make_dir,
+ .success = afs_create_success,
+ .aborted = afs_check_for_remote_deletion,
+ .edit_dir = afs_create_edit_dir,
+ .put = afs_create_put,
+};
+
/*
* create a directory on an AFS filesystem
*/
static int afs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
{
- struct afs_iget_data iget_data;
- struct afs_status_cb *scb;
- struct afs_fs_cursor fc;
+ struct afs_operation *op;
struct afs_vnode *dvnode = AFS_FS_I(dir);
- struct key *key;
- int ret;
-
- mode |= S_IFDIR;
_enter("{%llx:%llu},{%pd},%ho",
dvnode->fid.vid, dvnode->fid.vnode, dentry, mode);
- ret = -ENOMEM;
- scb = kcalloc(2, sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
- goto error;
-
- key = afs_request_key(dvnode->volume->cell);
- if (IS_ERR(key)) {
- ret = PTR_ERR(key);
- goto error_scb;
+ op = afs_alloc_operation(NULL, dvnode->volume);
+ if (IS_ERR(op)) {
+ d_drop(dentry);
+ return PTR_ERR(op);
}
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- afs_dataversion_t data_version = dvnode->status.data_version + 1;
-
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(dvnode);
- afs_prep_for_new_inode(&fc, &iget_data);
- afs_fs_create(&fc, dentry->d_name.name, mode,
- &scb[0], &iget_data.fid, &scb[1]);
- }
-
- afs_check_for_remote_deletion(&fc, dvnode);
- afs_vnode_commit_status(&fc, dvnode, fc.cb_break,
- &data_version, &scb[0]);
- afs_update_dentry_version(&fc, dentry, &scb[0]);
- afs_vnode_new_inode(&fc, dentry, &iget_data, &scb[1]);
- ret = afs_end_vnode_operation(&fc);
- if (ret < 0)
- goto error_key;
- } else {
- goto error_key;
- }
-
- if (ret == 0 &&
- test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
- afs_edit_dir_add(dvnode, &dentry->d_name, &iget_data.fid,
- afs_edit_dir_for_create);
-
- key_put(key);
- kfree(scb);
- _leave(" = 0");
- return 0;
-
-error_key:
- key_put(key);
-error_scb:
- kfree(scb);
-error:
- d_drop(dentry);
- _leave(" = %d", ret);
- return ret;
+ afs_op_set_vnode(op, 0, dvnode);
+ op->file[0].dv_delta = 1;
+ op->file[0].update_ctime = true;
+ op->dentry = dentry;
+ op->create.mode = S_IFDIR | mode;
+ op->create.reason = afs_edit_dir_for_mkdir;
+ op->ops = &afs_mkdir_operation;
+ return afs_do_sync_operation(op);
}
/*
@@ -1351,72 +1361,88 @@ static void afs_dir_remove_subdir(struct dentry *dentry)
}
}
+static void afs_rmdir_success(struct afs_operation *op)
+{
+ _enter("op=%08x", op->debug_id);
+ op->ctime = op->file[0].scb.status.mtime_client;
+ afs_vnode_commit_status(op, &op->file[0]);
+ afs_update_dentry_version(op, &op->file[0], op->dentry);
+}
+
+static void afs_rmdir_edit_dir(struct afs_operation *op)
+{
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode *dvnode = dvp->vnode;
+
+ _enter("op=%08x", op->debug_id);
+ afs_dir_remove_subdir(op->dentry);
+
+ down_write(&dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags) &&
+ dvnode->status.data_version == dvp->dv_before + dvp->dv_delta)
+ afs_edit_dir_remove(dvnode, &op->dentry->d_name,
+ afs_edit_dir_for_rmdir);
+ up_write(&dvnode->validate_lock);
+}
+
+static void afs_rmdir_put(struct afs_operation *op)
+{
+ _enter("op=%08x", op->debug_id);
+ if (op->file[1].vnode)
+ up_write(&op->file[1].vnode->rmdir_lock);
+}
+
+static const struct afs_operation_ops afs_rmdir_operation = {
+ .issue_afs_rpc = afs_fs_remove_dir,
+ .issue_yfs_rpc = yfs_fs_remove_dir,
+ .success = afs_rmdir_success,
+ .aborted = afs_check_for_remote_deletion,
+ .edit_dir = afs_rmdir_edit_dir,
+ .put = afs_rmdir_put,
+};
+
/*
* remove a directory from an AFS filesystem
*/
static int afs_rmdir(struct inode *dir, struct dentry *dentry)
{
- struct afs_status_cb *scb;
- struct afs_fs_cursor fc;
+ struct afs_operation *op;
struct afs_vnode *dvnode = AFS_FS_I(dir), *vnode = NULL;
- struct key *key;
int ret;
_enter("{%llx:%llu},{%pd}",
dvnode->fid.vid, dvnode->fid.vnode, dentry);
- scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
- return -ENOMEM;
+ op = afs_alloc_operation(NULL, dvnode->volume);
+ if (IS_ERR(op))
+ return PTR_ERR(op);
- key = afs_request_key(dvnode->volume->cell);
- if (IS_ERR(key)) {
- ret = PTR_ERR(key);
- goto error;
- }
+ afs_op_set_vnode(op, 0, dvnode);
+ op->file[0].dv_delta = 1;
+ op->file[0].update_ctime = true;
+
+ op->dentry = dentry;
+ op->ops = &afs_rmdir_operation;
/* Try to make sure we have a callback promise on the victim. */
if (d_really_is_positive(dentry)) {
vnode = AFS_FS_I(d_inode(dentry));
- ret = afs_validate(vnode, key);
+ ret = afs_validate(vnode, op->key);
if (ret < 0)
- goto error_key;
+ goto error;
}
if (vnode) {
ret = down_write_killable(&vnode->rmdir_lock);
if (ret < 0)
- goto error_key;
+ goto error;
+ op->file[1].vnode = vnode;
}
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- afs_dataversion_t data_version = dvnode->status.data_version + 1;
-
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(dvnode);
- afs_fs_remove(&fc, vnode, dentry->d_name.name, true, scb);
- }
+ return afs_do_sync_operation(op);
- afs_vnode_commit_status(&fc, dvnode, fc.cb_break,
- &data_version, scb);
- afs_update_dentry_version(&fc, dentry, scb);
- ret = afs_end_vnode_operation(&fc);
- if (ret == 0) {
- afs_dir_remove_subdir(dentry);
- if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
- afs_edit_dir_remove(dvnode, &dentry->d_name,
- afs_edit_dir_for_rmdir);
- }
- }
-
- if (vnode)
- up_write(&vnode->rmdir_lock);
-error_key:
- key_put(key);
error:
- kfree(scb);
- return ret;
+ return afs_put_operation(op);
}
/*
@@ -1429,52 +1455,92 @@ error:
* However, if we didn't have a callback promise outstanding, or it was
* outstanding on a different server, then it won't break it either...
*/
-static int afs_dir_remove_link(struct afs_vnode *dvnode, struct dentry *dentry,
- struct key *key)
+static void afs_dir_remove_link(struct afs_operation *op)
{
- int ret = 0;
+ struct afs_vnode *dvnode = op->file[0].vnode;
+ struct afs_vnode *vnode = op->file[1].vnode;
+ struct dentry *dentry = op->dentry;
+ int ret;
- if (d_really_is_positive(dentry)) {
- struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry));
+ if (op->error != 0 ||
+ (op->file[1].scb.have_status && op->file[1].scb.have_error))
+ return;
+ if (d_really_is_positive(dentry))
+ return;
- if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) {
- /* Already done */
- } else if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags)) {
- write_seqlock(&vnode->cb_lock);
- drop_nlink(&vnode->vfs_inode);
- if (vnode->vfs_inode.i_nlink == 0) {
- set_bit(AFS_VNODE_DELETED, &vnode->flags);
- __afs_break_callback(vnode, afs_cb_break_for_unlink);
- }
- write_sequnlock(&vnode->cb_lock);
- ret = 0;
- } else {
- afs_break_callback(vnode, afs_cb_break_for_unlink);
+ if (test_bit(AFS_VNODE_DELETED, &vnode->flags)) {
+ /* Already done */
+ } else if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags)) {
+ write_seqlock(&vnode->cb_lock);
+ drop_nlink(&vnode->vfs_inode);
+ if (vnode->vfs_inode.i_nlink == 0) {
+ set_bit(AFS_VNODE_DELETED, &vnode->flags);
+ __afs_break_callback(vnode, afs_cb_break_for_unlink);
+ }
+ write_sequnlock(&vnode->cb_lock);
+ } else {
+ afs_break_callback(vnode, afs_cb_break_for_unlink);
- if (test_bit(AFS_VNODE_DELETED, &vnode->flags))
- kdebug("AFS_VNODE_DELETED");
+ if (test_bit(AFS_VNODE_DELETED, &vnode->flags))
+ _debug("AFS_VNODE_DELETED");
- ret = afs_validate(vnode, key);
- if (ret == -ESTALE)
- ret = 0;
- }
- _debug("nlink %d [val %d]", vnode->vfs_inode.i_nlink, ret);
+ ret = afs_validate(vnode, op->key);
+ if (ret != -ESTALE)
+ op->error = ret;
}
- return ret;
+ _debug("nlink %d [val %d]", vnode->vfs_inode.i_nlink, op->error);
}
+static void afs_unlink_success(struct afs_operation *op)
+{
+ _enter("op=%08x", op->debug_id);
+ op->ctime = op->file[0].scb.status.mtime_client;
+ afs_check_dir_conflict(op, &op->file[0]);
+ afs_vnode_commit_status(op, &op->file[0]);
+ afs_vnode_commit_status(op, &op->file[1]);
+ afs_update_dentry_version(op, &op->file[0], op->dentry);
+ afs_dir_remove_link(op);
+}
+
+static void afs_unlink_edit_dir(struct afs_operation *op)
+{
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode *dvnode = dvp->vnode;
+
+ _enter("op=%08x", op->debug_id);
+ down_write(&dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags) &&
+ dvnode->status.data_version == dvp->dv_before + dvp->dv_delta)
+ afs_edit_dir_remove(dvnode, &op->dentry->d_name,
+ afs_edit_dir_for_unlink);
+ up_write(&dvnode->validate_lock);
+}
+
+static void afs_unlink_put(struct afs_operation *op)
+{
+ _enter("op=%08x", op->debug_id);
+ if (op->unlink.need_rehash && op->error < 0 && op->error != -ENOENT)
+ d_rehash(op->dentry);
+}
+
+static const struct afs_operation_ops afs_unlink_operation = {
+ .issue_afs_rpc = afs_fs_remove_file,
+ .issue_yfs_rpc = yfs_fs_remove_file,
+ .success = afs_unlink_success,
+ .aborted = afs_check_for_remote_deletion,
+ .edit_dir = afs_unlink_edit_dir,
+ .put = afs_unlink_put,
+};
+
/*
* Remove a file or symlink from an AFS filesystem.
*/
static int afs_unlink(struct inode *dir, struct dentry *dentry)
{
- struct afs_fs_cursor fc;
- struct afs_status_cb *scb;
+ struct afs_operation *op;
struct afs_vnode *dvnode = AFS_FS_I(dir);
struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry));
- struct key *key;
- bool need_rehash = false;
int ret;
_enter("{%llx:%llu},{%pd}",
@@ -1483,255 +1549,200 @@ static int afs_unlink(struct inode *dir, struct dentry *dentry)
if (dentry->d_name.len >= AFSNAMEMAX)
return -ENAMETOOLONG;
- ret = -ENOMEM;
- scb = kcalloc(2, sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
- goto error;
+ op = afs_alloc_operation(NULL, dvnode->volume);
+ if (IS_ERR(op))
+ return PTR_ERR(op);
- key = afs_request_key(dvnode->volume->cell);
- if (IS_ERR(key)) {
- ret = PTR_ERR(key);
- goto error_scb;
- }
+ afs_op_set_vnode(op, 0, dvnode);
+ op->file[0].dv_delta = 1;
+ op->file[0].update_ctime = true;
/* Try to make sure we have a callback promise on the victim. */
- ret = afs_validate(vnode, key);
- if (ret < 0)
- goto error_key;
+ ret = afs_validate(vnode, op->key);
+ if (ret < 0) {
+ op->error = ret;
+ goto error;
+ }
spin_lock(&dentry->d_lock);
if (d_count(dentry) > 1) {
spin_unlock(&dentry->d_lock);
/* Start asynchronous writeout of the inode */
write_inode_now(d_inode(dentry), 0);
- ret = afs_sillyrename(dvnode, vnode, dentry, key);
- goto error_key;
+ op->error = afs_sillyrename(dvnode, vnode, dentry, op->key);
+ goto error;
}
if (!d_unhashed(dentry)) {
/* Prevent a race with RCU lookup. */
__d_drop(dentry);
- need_rehash = true;
+ op->unlink.need_rehash = true;
}
spin_unlock(&dentry->d_lock);
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- afs_dataversion_t data_version = dvnode->status.data_version + 1;
- afs_dataversion_t data_version_2 = vnode->status.data_version;
-
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(dvnode);
- fc.cb_break_2 = afs_calc_vnode_cb_break(vnode);
-
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc.cbi->server->flags) &&
- !test_bit(AFS_SERVER_FL_NO_RM2, &fc.cbi->server->flags)) {
- yfs_fs_remove_file2(&fc, vnode, dentry->d_name.name,
- &scb[0], &scb[1]);
- if (fc.ac.error != -ECONNABORTED ||
- fc.ac.abort_code != RXGEN_OPCODE)
- continue;
- set_bit(AFS_SERVER_FL_NO_RM2, &fc.cbi->server->flags);
- }
+ op->file[1].vnode = vnode;
+ op->file[1].update_ctime = true;
+ op->file[1].op_unlinked = true;
+ op->dentry = dentry;
+ op->ops = &afs_unlink_operation;
+ afs_begin_vnode_operation(op);
+ afs_wait_for_operation(op);
- afs_fs_remove(&fc, vnode, dentry->d_name.name, false, &scb[0]);
- }
-
- afs_vnode_commit_status(&fc, dvnode, fc.cb_break,
- &data_version, &scb[0]);
- afs_vnode_commit_status(&fc, vnode, fc.cb_break_2,
- &data_version_2, &scb[1]);
- afs_update_dentry_version(&fc, dentry, &scb[0]);
- ret = afs_end_vnode_operation(&fc);
- if (ret == 0 && !(scb[1].have_status || scb[1].have_error))
- ret = afs_dir_remove_link(dvnode, dentry, key);
- if (ret == 0 &&
- test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
- afs_edit_dir_remove(dvnode, &dentry->d_name,
- afs_edit_dir_for_unlink);
+ /* If there was a conflict with a third party, check the status of the
+ * unlinked vnode.
+ */
+ if (op->error == 0 && (op->flags & AFS_OPERATION_DIR_CONFLICT)) {
+ op->file[1].update_ctime = false;
+ op->fetch_status.which = 1;
+ op->ops = &afs_fetch_status_operation;
+ afs_begin_vnode_operation(op);
+ afs_wait_for_operation(op);
}
- if (need_rehash && ret < 0 && ret != -ENOENT)
- d_rehash(dentry);
+ return afs_put_operation(op);
-error_key:
- key_put(key);
-error_scb:
- kfree(scb);
error:
- _leave(" = %d", ret);
- return ret;
+ return afs_put_operation(op);
}
+static const struct afs_operation_ops afs_create_operation = {
+ .issue_afs_rpc = afs_fs_create_file,
+ .issue_yfs_rpc = yfs_fs_create_file,
+ .success = afs_create_success,
+ .aborted = afs_check_for_remote_deletion,
+ .edit_dir = afs_create_edit_dir,
+ .put = afs_create_put,
+};
+
/*
* create a regular file on an AFS filesystem
*/
static int afs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
bool excl)
{
- struct afs_iget_data iget_data;
- struct afs_fs_cursor fc;
- struct afs_status_cb *scb;
+ struct afs_operation *op;
struct afs_vnode *dvnode = AFS_FS_I(dir);
- struct key *key;
- int ret;
-
- mode |= S_IFREG;
+ int ret = -ENAMETOOLONG;
- _enter("{%llx:%llu},{%pd},%ho,",
+ _enter("{%llx:%llu},{%pd},%ho",
dvnode->fid.vid, dvnode->fid.vnode, dentry, mode);
- ret = -ENAMETOOLONG;
if (dentry->d_name.len >= AFSNAMEMAX)
goto error;
- key = afs_request_key(dvnode->volume->cell);
- if (IS_ERR(key)) {
- ret = PTR_ERR(key);
+ op = afs_alloc_operation(NULL, dvnode->volume);
+ if (IS_ERR(op)) {
+ ret = PTR_ERR(op);
goto error;
}
- ret = -ENOMEM;
- scb = kcalloc(2, sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
- goto error_scb;
+ afs_op_set_vnode(op, 0, dvnode);
+ op->file[0].dv_delta = 1;
+ op->file[0].update_ctime = true;
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- afs_dataversion_t data_version = dvnode->status.data_version + 1;
-
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(dvnode);
- afs_prep_for_new_inode(&fc, &iget_data);
- afs_fs_create(&fc, dentry->d_name.name, mode,
- &scb[0], &iget_data.fid, &scb[1]);
- }
+ op->dentry = dentry;
+ op->create.mode = S_IFREG | mode;
+ op->create.reason = afs_edit_dir_for_create;
+ op->ops = &afs_create_operation;
+ return afs_do_sync_operation(op);
- afs_check_for_remote_deletion(&fc, dvnode);
- afs_vnode_commit_status(&fc, dvnode, fc.cb_break,
- &data_version, &scb[0]);
- afs_update_dentry_version(&fc, dentry, &scb[0]);
- afs_vnode_new_inode(&fc, dentry, &iget_data, &scb[1]);
- ret = afs_end_vnode_operation(&fc);
- if (ret < 0)
- goto error_key;
- } else {
- goto error_key;
- }
-
- if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
- afs_edit_dir_add(dvnode, &dentry->d_name, &iget_data.fid,
- afs_edit_dir_for_create);
-
- kfree(scb);
- key_put(key);
- _leave(" = 0");
- return 0;
-
-error_scb:
- kfree(scb);
-error_key:
- key_put(key);
error:
d_drop(dentry);
_leave(" = %d", ret);
return ret;
}
+static void afs_link_success(struct afs_operation *op)
+{
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
+
+ _enter("op=%08x", op->debug_id);
+ op->ctime = dvp->scb.status.mtime_client;
+ afs_vnode_commit_status(op, dvp);
+ afs_vnode_commit_status(op, vp);
+ afs_update_dentry_version(op, dvp, op->dentry);
+ if (op->dentry_2->d_parent == op->dentry->d_parent)
+ afs_update_dentry_version(op, dvp, op->dentry_2);
+ ihold(&vp->vnode->vfs_inode);
+ d_instantiate(op->dentry, &vp->vnode->vfs_inode);
+}
+
+static void afs_link_put(struct afs_operation *op)
+{
+ _enter("op=%08x", op->debug_id);
+ if (op->error)
+ d_drop(op->dentry);
+}
+
+static const struct afs_operation_ops afs_link_operation = {
+ .issue_afs_rpc = afs_fs_link,
+ .issue_yfs_rpc = yfs_fs_link,
+ .success = afs_link_success,
+ .aborted = afs_check_for_remote_deletion,
+ .edit_dir = afs_create_edit_dir,
+ .put = afs_link_put,
+};
+
/*
* create a hard link between files in an AFS filesystem
*/
static int afs_link(struct dentry *from, struct inode *dir,
struct dentry *dentry)
{
- struct afs_fs_cursor fc;
- struct afs_status_cb *scb;
+ struct afs_operation *op;
struct afs_vnode *dvnode = AFS_FS_I(dir);
struct afs_vnode *vnode = AFS_FS_I(d_inode(from));
- struct key *key;
- int ret;
+ int ret = -ENAMETOOLONG;
_enter("{%llx:%llu},{%llx:%llu},{%pd}",
vnode->fid.vid, vnode->fid.vnode,
dvnode->fid.vid, dvnode->fid.vnode,
dentry);
- ret = -ENAMETOOLONG;
if (dentry->d_name.len >= AFSNAMEMAX)
goto error;
- ret = -ENOMEM;
- scb = kcalloc(2, sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
+ op = afs_alloc_operation(NULL, dvnode->volume);
+ if (IS_ERR(op)) {
+ ret = PTR_ERR(op);
goto error;
-
- key = afs_request_key(dvnode->volume->cell);
- if (IS_ERR(key)) {
- ret = PTR_ERR(key);
- goto error_scb;
}
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- afs_dataversion_t data_version = dvnode->status.data_version + 1;
+ afs_op_set_vnode(op, 0, dvnode);
+ afs_op_set_vnode(op, 1, vnode);
+ op->file[0].dv_delta = 1;
+ op->file[0].update_ctime = true;
+ op->file[1].update_ctime = true;
- if (mutex_lock_interruptible_nested(&vnode->io_lock, 1) < 0) {
- afs_end_vnode_operation(&fc);
- goto error_key;
- }
-
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(dvnode);
- fc.cb_break_2 = afs_calc_vnode_cb_break(vnode);
- afs_fs_link(&fc, vnode, dentry->d_name.name,
- &scb[0], &scb[1]);
- }
-
- afs_vnode_commit_status(&fc, dvnode, fc.cb_break,
- &data_version, &scb[0]);
- afs_vnode_commit_status(&fc, vnode, fc.cb_break_2,
- NULL, &scb[1]);
- ihold(&vnode->vfs_inode);
- afs_update_dentry_version(&fc, dentry, &scb[0]);
- d_instantiate(dentry, &vnode->vfs_inode);
-
- mutex_unlock(&vnode->io_lock);
- ret = afs_end_vnode_operation(&fc);
- if (ret < 0)
- goto error_key;
- } else {
- goto error_key;
- }
-
- if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
- afs_edit_dir_add(dvnode, &dentry->d_name, &vnode->fid,
- afs_edit_dir_for_link);
-
- key_put(key);
- kfree(scb);
- _leave(" = 0");
- return 0;
+ op->dentry = dentry;
+ op->dentry_2 = from;
+ op->ops = &afs_link_operation;
+ op->create.reason = afs_edit_dir_for_link;
+ return afs_do_sync_operation(op);
-error_key:
- key_put(key);
-error_scb:
- kfree(scb);
error:
d_drop(dentry);
_leave(" = %d", ret);
return ret;
}
+static const struct afs_operation_ops afs_symlink_operation = {
+ .issue_afs_rpc = afs_fs_symlink,
+ .issue_yfs_rpc = yfs_fs_symlink,
+ .success = afs_create_success,
+ .aborted = afs_check_for_remote_deletion,
+ .edit_dir = afs_create_edit_dir,
+ .put = afs_create_put,
+};
+
/*
* create a symlink in an AFS filesystem
*/
static int afs_symlink(struct inode *dir, struct dentry *dentry,
const char *content)
{
- struct afs_iget_data iget_data;
- struct afs_fs_cursor fc;
- struct afs_status_cb *scb;
+ struct afs_operation *op;
struct afs_vnode *dvnode = AFS_FS_I(dir);
- struct key *key;
int ret;
_enter("{%llx:%llu},{%pd},%s",
@@ -1746,59 +1757,119 @@ static int afs_symlink(struct inode *dir, struct dentry *dentry,
if (strlen(content) >= AFSPATHMAX)
goto error;
- ret = -ENOMEM;
- scb = kcalloc(2, sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
+ op = afs_alloc_operation(NULL, dvnode->volume);
+ if (IS_ERR(op)) {
+ ret = PTR_ERR(op);
goto error;
-
- key = afs_request_key(dvnode->volume->cell);
- if (IS_ERR(key)) {
- ret = PTR_ERR(key);
- goto error_scb;
}
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- afs_dataversion_t data_version = dvnode->status.data_version + 1;
-
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(dvnode);
- afs_prep_for_new_inode(&fc, &iget_data);
- afs_fs_symlink(&fc, dentry->d_name.name, content,
- &scb[0], &iget_data.fid, &scb[1]);
- }
+ afs_op_set_vnode(op, 0, dvnode);
+ op->file[0].dv_delta = 1;
- afs_check_for_remote_deletion(&fc, dvnode);
- afs_vnode_commit_status(&fc, dvnode, fc.cb_break,
- &data_version, &scb[0]);
- afs_update_dentry_version(&fc, dentry, &scb[0]);
- afs_vnode_new_inode(&fc, dentry, &iget_data, &scb[1]);
- ret = afs_end_vnode_operation(&fc);
- if (ret < 0)
- goto error_key;
- } else {
- goto error_key;
- }
-
- if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
- afs_edit_dir_add(dvnode, &dentry->d_name, &iget_data.fid,
- afs_edit_dir_for_symlink);
-
- key_put(key);
- kfree(scb);
- _leave(" = 0");
- return 0;
+ op->dentry = dentry;
+ op->ops = &afs_symlink_operation;
+ op->create.reason = afs_edit_dir_for_symlink;
+ op->create.symlink = content;
+ return afs_do_sync_operation(op);
-error_key:
- key_put(key);
-error_scb:
- kfree(scb);
error:
d_drop(dentry);
_leave(" = %d", ret);
return ret;
}
+static void afs_rename_success(struct afs_operation *op)
+{
+ _enter("op=%08x", op->debug_id);
+
+ op->ctime = op->file[0].scb.status.mtime_client;
+ afs_check_dir_conflict(op, &op->file[1]);
+ afs_vnode_commit_status(op, &op->file[0]);
+ if (op->file[1].vnode != op->file[0].vnode) {
+ op->ctime = op->file[1].scb.status.mtime_client;
+ afs_vnode_commit_status(op, &op->file[1]);
+ }
+}
+
+static void afs_rename_edit_dir(struct afs_operation *op)
+{
+ struct afs_vnode_param *orig_dvp = &op->file[0];
+ struct afs_vnode_param *new_dvp = &op->file[1];
+ struct afs_vnode *orig_dvnode = orig_dvp->vnode;
+ struct afs_vnode *new_dvnode = new_dvp->vnode;
+ struct afs_vnode *vnode = AFS_FS_I(d_inode(op->dentry));
+ struct dentry *old_dentry = op->dentry;
+ struct dentry *new_dentry = op->dentry_2;
+ struct inode *new_inode;
+
+ _enter("op=%08x", op->debug_id);
+
+ if (op->rename.rehash) {
+ d_rehash(op->rename.rehash);
+ op->rename.rehash = NULL;
+ }
+
+ down_write(&orig_dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &orig_dvnode->flags) &&
+ orig_dvnode->status.data_version == orig_dvp->dv_before + orig_dvp->dv_delta)
+ afs_edit_dir_remove(orig_dvnode, &old_dentry->d_name,
+ afs_edit_dir_for_rename_0);
+
+ if (new_dvnode != orig_dvnode) {
+ up_write(&orig_dvnode->validate_lock);
+ down_write(&new_dvnode->validate_lock);
+ }
+
+ if (test_bit(AFS_VNODE_DIR_VALID, &new_dvnode->flags) &&
+ new_dvnode->status.data_version == new_dvp->dv_before + new_dvp->dv_delta) {
+ if (!op->rename.new_negative)
+ afs_edit_dir_remove(new_dvnode, &new_dentry->d_name,
+ afs_edit_dir_for_rename_1);
+
+ afs_edit_dir_add(new_dvnode, &new_dentry->d_name,
+ &vnode->fid, afs_edit_dir_for_rename_2);
+ }
+
+ new_inode = d_inode(new_dentry);
+ if (new_inode) {
+ spin_lock(&new_inode->i_lock);
+ if (new_inode->i_nlink > 0)
+ drop_nlink(new_inode);
+ spin_unlock(&new_inode->i_lock);
+ }
+
+ /* Now we can update d_fsdata on the dentries to reflect their
+ * new parent's data_version.
+ *
+ * Note that if we ever implement RENAME_EXCHANGE, we'll have
+ * to update both dentries with opposing dir versions.
+ */
+ afs_update_dentry_version(op, new_dvp, op->dentry);
+ afs_update_dentry_version(op, new_dvp, op->dentry_2);
+
+ d_move(old_dentry, new_dentry);
+
+ up_write(&new_dvnode->validate_lock);
+}
+
+static void afs_rename_put(struct afs_operation *op)
+{
+ _enter("op=%08x", op->debug_id);
+ if (op->rename.rehash)
+ d_rehash(op->rename.rehash);
+ dput(op->rename.tmp);
+ if (op->error)
+ d_rehash(op->dentry);
+}
+
+static const struct afs_operation_ops afs_rename_operation = {
+ .issue_afs_rpc = afs_fs_rename,
+ .issue_yfs_rpc = yfs_fs_rename,
+ .success = afs_rename_success,
+ .edit_dir = afs_rename_edit_dir,
+ .put = afs_rename_put,
+};
+
/*
* rename a file in an AFS filesystem and/or move it between directories
*/
@@ -1806,13 +1877,8 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct inode *new_dir, struct dentry *new_dentry,
unsigned int flags)
{
- struct afs_fs_cursor fc;
- struct afs_status_cb *scb;
+ struct afs_operation *op;
struct afs_vnode *orig_dvnode, *new_dvnode, *vnode;
- struct dentry *tmp = NULL, *rehash = NULL;
- struct inode *new_inode;
- struct key *key;
- bool new_negative = d_is_negative(new_dentry);
int ret;
if (flags)
@@ -1832,16 +1898,21 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
new_dvnode->fid.vid, new_dvnode->fid.vnode,
new_dentry);
- ret = -ENOMEM;
- scb = kcalloc(2, sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
- goto error;
+ op = afs_alloc_operation(NULL, orig_dvnode->volume);
+ if (IS_ERR(op))
+ return PTR_ERR(op);
- key = afs_request_key(orig_dvnode->volume->cell);
- if (IS_ERR(key)) {
- ret = PTR_ERR(key);
- goto error_scb;
- }
+ afs_op_set_vnode(op, 0, orig_dvnode);
+ afs_op_set_vnode(op, 1, new_dvnode); /* May be same as orig_dvnode */
+ op->file[0].dv_delta = 1;
+ op->file[1].dv_delta = 1;
+ op->file[0].update_ctime = true;
+ op->file[1].update_ctime = true;
+
+ op->dentry = old_dentry;
+ op->dentry_2 = new_dentry;
+ op->rename.new_negative = d_is_negative(new_dentry);
+ op->ops = &afs_rename_operation;
/* For non-directories, check whether the target is busy and if so,
* make a copy of the dentry and then do a silly-rename. If the
@@ -1854,26 +1925,26 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
*/
if (!d_unhashed(new_dentry)) {
d_drop(new_dentry);
- rehash = new_dentry;
+ op->rename.rehash = new_dentry;
}
if (d_count(new_dentry) > 2) {
/* copy the target dentry's name */
ret = -ENOMEM;
- tmp = d_alloc(new_dentry->d_parent,
- &new_dentry->d_name);
- if (!tmp)
- goto error_rehash;
+ op->rename.tmp = d_alloc(new_dentry->d_parent,
+ &new_dentry->d_name);
+ if (!op->rename.tmp)
+ goto error;
ret = afs_sillyrename(new_dvnode,
AFS_FS_I(d_inode(new_dentry)),
- new_dentry, key);
+ new_dentry, op->key);
if (ret)
- goto error_rehash;
+ goto error;
- new_dentry = tmp;
- rehash = NULL;
- new_negative = true;
+ op->dentry_2 = op->rename.tmp;
+ op->rename.rehash = NULL;
+ op->rename.new_negative = true;
}
}
@@ -1888,100 +1959,10 @@ static int afs_rename(struct inode *old_dir, struct dentry *old_dentry,
*/
d_drop(old_dentry);
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, orig_dvnode, key, true)) {
- afs_dataversion_t orig_data_version;
- afs_dataversion_t new_data_version;
- struct afs_status_cb *new_scb = &scb[1];
-
- orig_data_version = orig_dvnode->status.data_version + 1;
-
- if (orig_dvnode != new_dvnode) {
- if (mutex_lock_interruptible_nested(&new_dvnode->io_lock, 1) < 0) {
- afs_end_vnode_operation(&fc);
- goto error_rehash_old;
- }
- new_data_version = new_dvnode->status.data_version + 1;
- } else {
- new_data_version = orig_data_version;
- new_scb = &scb[0];
- }
-
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(orig_dvnode);
- fc.cb_break_2 = afs_calc_vnode_cb_break(new_dvnode);
- afs_fs_rename(&fc, old_dentry->d_name.name,
- new_dvnode, new_dentry->d_name.name,
- &scb[0], new_scb);
- }
-
- afs_vnode_commit_status(&fc, orig_dvnode, fc.cb_break,
- &orig_data_version, &scb[0]);
- if (new_dvnode != orig_dvnode) {
- afs_vnode_commit_status(&fc, new_dvnode, fc.cb_break_2,
- &new_data_version, &scb[1]);
- mutex_unlock(&new_dvnode->io_lock);
- }
- ret = afs_end_vnode_operation(&fc);
- if (ret < 0)
- goto error_rehash_old;
- }
-
- if (ret == 0) {
- if (rehash)
- d_rehash(rehash);
- if (test_bit(AFS_VNODE_DIR_VALID, &orig_dvnode->flags))
- afs_edit_dir_remove(orig_dvnode, &old_dentry->d_name,
- afs_edit_dir_for_rename_0);
-
- if (!new_negative &&
- test_bit(AFS_VNODE_DIR_VALID, &new_dvnode->flags))
- afs_edit_dir_remove(new_dvnode, &new_dentry->d_name,
- afs_edit_dir_for_rename_1);
-
- if (test_bit(AFS_VNODE_DIR_VALID, &new_dvnode->flags))
- afs_edit_dir_add(new_dvnode, &new_dentry->d_name,
- &vnode->fid, afs_edit_dir_for_rename_2);
+ return afs_do_sync_operation(op);
- new_inode = d_inode(new_dentry);
- if (new_inode) {
- spin_lock(&new_inode->i_lock);
- if (new_inode->i_nlink > 0)
- drop_nlink(new_inode);
- spin_unlock(&new_inode->i_lock);
- }
-
- /* Now we can update d_fsdata on the dentries to reflect their
- * new parent's data_version.
- *
- * Note that if we ever implement RENAME_EXCHANGE, we'll have
- * to update both dentries with opposing dir versions.
- */
- if (new_dvnode != orig_dvnode) {
- afs_update_dentry_version(&fc, old_dentry, &scb[1]);
- afs_update_dentry_version(&fc, new_dentry, &scb[1]);
- } else {
- afs_update_dentry_version(&fc, old_dentry, &scb[0]);
- afs_update_dentry_version(&fc, new_dentry, &scb[0]);
- }
- d_move(old_dentry, new_dentry);
- goto error_tmp;
- }
-
-error_rehash_old:
- d_rehash(new_dentry);
-error_rehash:
- if (rehash)
- d_rehash(rehash);
-error_tmp:
- if (tmp)
- dput(tmp);
- key_put(key);
-error_scb:
- kfree(scb);
error:
- _leave(" = %d", ret);
- return ret;
+ return afs_put_operation(op);
}
/*
diff --git a/fs/afs/dir_silly.c b/fs/afs/dir_silly.c
index 361088a5edb9..04f75a44f243 100644
--- a/fs/afs/dir_silly.c
+++ b/fs/afs/dir_silly.c
@@ -12,6 +12,48 @@
#include <linux/fsnotify.h>
#include "internal.h"
+static void afs_silly_rename_success(struct afs_operation *op)
+{
+ _enter("op=%08x", op->debug_id);
+
+ afs_check_dir_conflict(op, &op->file[0]);
+ afs_vnode_commit_status(op, &op->file[0]);
+}
+
+static void afs_silly_rename_edit_dir(struct afs_operation *op)
+{
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode *dvnode = dvp->vnode;
+ struct afs_vnode *vnode = AFS_FS_I(d_inode(op->dentry));
+ struct dentry *old = op->dentry;
+ struct dentry *new = op->dentry_2;
+
+ spin_lock(&old->d_lock);
+ old->d_flags |= DCACHE_NFSFS_RENAMED;
+ spin_unlock(&old->d_lock);
+ if (dvnode->silly_key != op->key) {
+ key_put(dvnode->silly_key);
+ dvnode->silly_key = key_get(op->key);
+ }
+
+ down_write(&dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags) &&
+ dvnode->status.data_version == dvp->dv_before + dvp->dv_delta) {
+ afs_edit_dir_remove(dvnode, &old->d_name,
+ afs_edit_dir_for_silly_0);
+ afs_edit_dir_add(dvnode, &new->d_name,
+ &vnode->fid, afs_edit_dir_for_silly_1);
+ }
+ up_write(&dvnode->validate_lock);
+}
+
+static const struct afs_operation_ops afs_silly_rename_operation = {
+ .issue_afs_rpc = afs_fs_rename,
+ .issue_yfs_rpc = yfs_fs_rename,
+ .success = afs_silly_rename_success,
+ .edit_dir = afs_silly_rename_edit_dir,
+};
+
/*
* Actually perform the silly rename step.
*/
@@ -19,52 +61,27 @@ static int afs_do_silly_rename(struct afs_vnode *dvnode, struct afs_vnode *vnode
struct dentry *old, struct dentry *new,
struct key *key)
{
- struct afs_fs_cursor fc;
- struct afs_status_cb *scb;
- int ret = -ERESTARTSYS;
+ struct afs_operation *op;
_enter("%pd,%pd", old, new);
- scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
- return -ENOMEM;
+ op = afs_alloc_operation(key, dvnode->volume);
+ if (IS_ERR(op))
+ return PTR_ERR(op);
- trace_afs_silly_rename(vnode, false);
- if (afs_begin_vnode_operation(&fc, dvnode, key, true)) {
- afs_dataversion_t dir_data_version = dvnode->status.data_version + 1;
-
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(dvnode);
- afs_fs_rename(&fc, old->d_name.name,
- dvnode, new->d_name.name,
- scb, scb);
- }
+ afs_op_set_vnode(op, 0, dvnode);
+ afs_op_set_vnode(op, 1, dvnode);
+ op->file[0].dv_delta = 1;
+ op->file[1].dv_delta = 1;
+ op->file[0].update_ctime = true;
+ op->file[1].update_ctime = true;
- afs_vnode_commit_status(&fc, dvnode, fc.cb_break,
- &dir_data_version, scb);
- ret = afs_end_vnode_operation(&fc);
- }
-
- if (ret == 0) {
- spin_lock(&old->d_lock);
- old->d_flags |= DCACHE_NFSFS_RENAMED;
- spin_unlock(&old->d_lock);
- if (dvnode->silly_key != key) {
- key_put(dvnode->silly_key);
- dvnode->silly_key = key_get(key);
- }
-
- if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
- afs_edit_dir_remove(dvnode, &old->d_name,
- afs_edit_dir_for_silly_0);
- if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
- afs_edit_dir_add(dvnode, &new->d_name,
- &vnode->fid, afs_edit_dir_for_silly_1);
- }
+ op->dentry = old;
+ op->dentry_2 = new;
+ op->ops = &afs_silly_rename_operation;
- kfree(scb);
- _leave(" = %d", ret);
- return ret;
+ trace_afs_silly_rename(vnode, false);
+ return afs_do_sync_operation(op);
}
/**
@@ -118,6 +135,7 @@ int afs_sillyrename(struct afs_vnode *dvnode, struct afs_vnode *vnode,
switch (ret) {
case 0:
/* The rename succeeded. */
+ set_bit(AFS_VNODE_SILLY_DELETED, &vnode->flags);
d_move(dentry, sdentry);
break;
case -ERESTARTSYS:
@@ -135,61 +153,77 @@ out:
return ret;
}
+static void afs_silly_unlink_success(struct afs_operation *op)
+{
+ _enter("op=%08x", op->debug_id);
+ afs_check_dir_conflict(op, &op->file[0]);
+ afs_vnode_commit_status(op, &op->file[0]);
+ afs_vnode_commit_status(op, &op->file[1]);
+ afs_update_dentry_version(op, &op->file[0], op->dentry);
+}
+
+static void afs_silly_unlink_edit_dir(struct afs_operation *op)
+{
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode *dvnode = dvp->vnode;
+
+ _enter("op=%08x", op->debug_id);
+ down_write(&dvnode->validate_lock);
+ if (test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags) &&
+ dvnode->status.data_version == dvp->dv_before + dvp->dv_delta)
+ afs_edit_dir_remove(dvnode, &op->dentry->d_name,
+ afs_edit_dir_for_unlink);
+ up_write(&dvnode->validate_lock);
+}
+
+static const struct afs_operation_ops afs_silly_unlink_operation = {
+ .issue_afs_rpc = afs_fs_remove_file,
+ .issue_yfs_rpc = yfs_fs_remove_file,
+ .success = afs_silly_unlink_success,
+ .aborted = afs_check_for_remote_deletion,
+ .edit_dir = afs_silly_unlink_edit_dir,
+};
+
/*
* Tell the server to remove a sillyrename file.
*/
static int afs_do_silly_unlink(struct afs_vnode *dvnode, struct afs_vnode *vnode,
struct dentry *dentry, struct key *key)
{
- struct afs_fs_cursor fc;
- struct afs_status_cb *scb;
- int ret = -ERESTARTSYS;
+ struct afs_operation *op;
_enter("");
- scb = kcalloc(2, sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
- return -ENOMEM;
+ op = afs_alloc_operation(NULL, dvnode->volume);
+ if (IS_ERR(op))
+ return PTR_ERR(op);
- trace_afs_silly_rename(vnode, true);
- if (afs_begin_vnode_operation(&fc, dvnode, key, false)) {
- afs_dataversion_t dir_data_version = dvnode->status.data_version + 1;
-
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(dvnode);
-
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc.cbi->server->flags) &&
- !test_bit(AFS_SERVER_FL_NO_RM2, &fc.cbi->server->flags)) {
- yfs_fs_remove_file2(&fc, vnode, dentry->d_name.name,
- &scb[0], &scb[1]);
- if (fc.ac.error != -ECONNABORTED ||
- fc.ac.abort_code != RXGEN_OPCODE)
- continue;
- set_bit(AFS_SERVER_FL_NO_RM2, &fc.cbi->server->flags);
- }
-
- afs_fs_remove(&fc, vnode, dentry->d_name.name, false, &scb[0]);
- }
+ afs_op_set_vnode(op, 0, dvnode);
+ afs_op_set_vnode(op, 1, vnode);
+ op->file[0].dv_delta = 1;
+ op->file[0].update_ctime = true;
+ op->file[1].op_unlinked = true;
+ op->file[1].update_ctime = true;
- afs_vnode_commit_status(&fc, dvnode, fc.cb_break,
- &dir_data_version, &scb[0]);
- ret = afs_end_vnode_operation(&fc);
- if (ret == 0) {
- drop_nlink(&vnode->vfs_inode);
- if (vnode->vfs_inode.i_nlink == 0) {
- set_bit(AFS_VNODE_DELETED, &vnode->flags);
- clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
- }
- }
- if (ret == 0 &&
- test_bit(AFS_VNODE_DIR_VALID, &dvnode->flags))
- afs_edit_dir_remove(dvnode, &dentry->d_name,
- afs_edit_dir_for_unlink);
+ op->dentry = dentry;
+ op->ops = &afs_silly_unlink_operation;
+
+ trace_afs_silly_rename(vnode, true);
+ afs_begin_vnode_operation(op);
+ afs_wait_for_operation(op);
+
+ /* If there was a conflict with a third party, check the status of the
+ * unlinked vnode.
+ */
+ if (op->error == 0 && (op->flags & AFS_OPERATION_DIR_CONFLICT)) {
+ op->file[1].update_ctime = false;
+ op->fetch_status.which = 1;
+ op->ops = &afs_fetch_status_operation;
+ afs_begin_vnode_operation(op);
+ afs_wait_for_operation(op);
}
- kfree(scb);
- _leave(" = %d", ret);
- return ret;
+ return afs_put_operation(op);
}
/*
diff --git a/fs/afs/dynroot.c b/fs/afs/dynroot.c
index 7503899c0a1b..b79879aacc02 100644
--- a/fs/afs/dynroot.c
+++ b/fs/afs/dynroot.c
@@ -10,6 +10,99 @@
#include <linux/dns_resolver.h>
#include "internal.h"
+static atomic_t afs_autocell_ino;
+
+/*
+ * iget5() comparator for inode created by autocell operations
+ *
+ * These pseudo inodes don't match anything.
+ */
+static int afs_iget5_pseudo_test(struct inode *inode, void *opaque)
+{
+ return 0;
+}
+
+/*
+ * iget5() inode initialiser
+ */
+static int afs_iget5_pseudo_set(struct inode *inode, void *opaque)
+{
+ struct afs_super_info *as = AFS_FS_S(inode->i_sb);
+ struct afs_vnode *vnode = AFS_FS_I(inode);
+ struct afs_fid *fid = opaque;
+
+ vnode->volume = as->volume;
+ vnode->fid = *fid;
+ inode->i_ino = fid->vnode;
+ inode->i_generation = fid->unique;
+ return 0;
+}
+
+/*
+ * Create an inode for a dynamic root directory or an autocell dynamic
+ * automount dir.
+ */
+struct inode *afs_iget_pseudo_dir(struct super_block *sb, bool root)
+{
+ struct afs_super_info *as = AFS_FS_S(sb);
+ struct afs_vnode *vnode;
+ struct inode *inode;
+ struct afs_fid fid = {};
+
+ _enter("");
+
+ if (as->volume)
+ fid.vid = as->volume->vid;
+ if (root) {
+ fid.vnode = 1;
+ fid.unique = 1;
+ } else {
+ fid.vnode = atomic_inc_return(&afs_autocell_ino);
+ fid.unique = 0;
+ }
+
+ inode = iget5_locked(sb, fid.vnode,
+ afs_iget5_pseudo_test, afs_iget5_pseudo_set, &fid);
+ if (!inode) {
+ _leave(" = -ENOMEM");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ _debug("GOT INODE %p { ino=%lu, vl=%llx, vn=%llx, u=%x }",
+ inode, inode->i_ino, fid.vid, fid.vnode, fid.unique);
+
+ vnode = AFS_FS_I(inode);
+
+ /* there shouldn't be an existing inode */
+ BUG_ON(!(inode->i_state & I_NEW));
+
+ inode->i_size = 0;
+ inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
+ if (root) {
+ inode->i_op = &afs_dynroot_inode_operations;
+ inode->i_fop = &simple_dir_operations;
+ } else {
+ inode->i_op = &afs_autocell_inode_operations;
+ }
+ set_nlink(inode, 2);
+ inode->i_uid = GLOBAL_ROOT_UID;
+ inode->i_gid = GLOBAL_ROOT_GID;
+ inode->i_ctime = inode->i_atime = inode->i_mtime = current_time(inode);
+ inode->i_blocks = 0;
+ inode->i_generation = 0;
+
+ set_bit(AFS_VNODE_PSEUDODIR, &vnode->flags);
+ if (!root) {
+ set_bit(AFS_VNODE_MOUNTPOINT, &vnode->flags);
+ inode->i_flags |= S_AUTOMOUNT;
+ }
+
+ inode->i_flags |= S_NOATIME;
+ unlock_new_inode(inode);
+ _leave(" = %p", inode);
+ return inode;
+}
+
/*
* Probe to see if a cell may exist. This prevents positive dentries from
* being created unnecessarily.
diff --git a/fs/afs/file.c b/fs/afs/file.c
index 8415733f7bc1..6f6ed1605cfe 100644
--- a/fs/afs/file.c
+++ b/fs/afs/file.c
@@ -69,7 +69,7 @@ static const struct vm_operations_struct afs_vm_ops = {
*/
void afs_put_wb_key(struct afs_wb_key *wbk)
{
- if (refcount_dec_and_test(&wbk->usage)) {
+ if (wbk && refcount_dec_and_test(&wbk->usage)) {
key_put(wbk->key);
kfree(wbk);
}
@@ -220,14 +220,35 @@ static void afs_file_readpage_read_complete(struct page *page,
}
#endif
+static void afs_fetch_data_success(struct afs_operation *op)
+{
+ struct afs_vnode *vnode = op->file[0].vnode;
+
+ _enter("op=%08x", op->debug_id);
+ afs_vnode_commit_status(op, &op->file[0]);
+ afs_stat_v(vnode, n_fetches);
+ atomic_long_add(op->fetch.req->actual_len, &op->net->n_fetch_bytes);
+}
+
+static void afs_fetch_data_put(struct afs_operation *op)
+{
+ afs_put_read(op->fetch.req);
+}
+
+static const struct afs_operation_ops afs_fetch_data_operation = {
+ .issue_afs_rpc = afs_fs_fetch_data,
+ .issue_yfs_rpc = yfs_fs_fetch_data,
+ .success = afs_fetch_data_success,
+ .aborted = afs_check_for_remote_deletion,
+ .put = afs_fetch_data_put,
+};
+
/*
* Fetch file data from the volume.
*/
int afs_fetch_data(struct afs_vnode *vnode, struct key *key, struct afs_read *req)
{
- struct afs_fs_cursor fc;
- struct afs_status_cb *scb;
- int ret;
+ struct afs_operation *op;
_enter("%s{%llx:%llu.%u},%x,,,",
vnode->volume->name,
@@ -236,34 +257,15 @@ int afs_fetch_data(struct afs_vnode *vnode, struct key *key, struct afs_read *re
vnode->fid.unique,
key_serial(key));
- scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
- return -ENOMEM;
-
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, key, true)) {
- afs_dataversion_t data_version = vnode->status.data_version;
+ op = afs_alloc_operation(key, vnode->volume);
+ if (IS_ERR(op))
+ return PTR_ERR(op);
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(vnode);
- afs_fs_fetch_data(&fc, scb, req);
- }
-
- afs_check_for_remote_deletion(&fc, vnode);
- afs_vnode_commit_status(&fc, vnode, fc.cb_break,
- &data_version, scb);
- ret = afs_end_vnode_operation(&fc);
- }
+ afs_op_set_vnode(op, 0, vnode);
- if (ret == 0) {
- afs_stat_v(vnode, n_fetches);
- atomic_long_add(req->actual_len,
- &afs_v2net(vnode)->n_fetch_bytes);
- }
-
- kfree(scb);
- _leave(" = %d", ret);
- return ret;
+ op->fetch.req = afs_get_read(req);
+ op->ops = &afs_fetch_data_operation;
+ return afs_do_sync_operation(op);
}
/*
diff --git a/fs/afs/flock.c b/fs/afs/flock.c
index 0f2a94ba73cb..ffb8575345ca 100644
--- a/fs/afs/flock.c
+++ b/fs/afs/flock.c
@@ -70,7 +70,8 @@ static void afs_schedule_lock_extension(struct afs_vnode *vnode)
*/
void afs_lock_op_done(struct afs_call *call)
{
- struct afs_vnode *vnode = call->lvnode;
+ struct afs_operation *op = call->op;
+ struct afs_vnode *vnode = op->file[0].vnode;
if (call->error == 0) {
spin_lock(&vnode->lock);
@@ -172,15 +173,26 @@ static void afs_kill_lockers_enoent(struct afs_vnode *vnode)
vnode->lock_key = NULL;
}
+static void afs_lock_success(struct afs_operation *op)
+{
+ _enter("op=%08x", op->debug_id);
+ afs_vnode_commit_status(op, &op->file[0]);
+}
+
+static const struct afs_operation_ops afs_set_lock_operation = {
+ .issue_afs_rpc = afs_fs_set_lock,
+ .issue_yfs_rpc = yfs_fs_set_lock,
+ .success = afs_lock_success,
+ .aborted = afs_check_for_remote_deletion,
+};
+
/*
* Get a lock on a file
*/
static int afs_set_lock(struct afs_vnode *vnode, struct key *key,
afs_lock_type_t type)
{
- struct afs_status_cb *scb;
- struct afs_fs_cursor fc;
- int ret;
+ struct afs_operation *op;
_enter("%s{%llx:%llu.%u},%x,%u",
vnode->volume->name,
@@ -189,35 +201,29 @@ static int afs_set_lock(struct afs_vnode *vnode, struct key *key,
vnode->fid.unique,
key_serial(key), type);
- scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
- return -ENOMEM;
-
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, key, true)) {
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(vnode);
- afs_fs_set_lock(&fc, type, scb);
- }
+ op = afs_alloc_operation(key, vnode->volume);
+ if (IS_ERR(op))
+ return PTR_ERR(op);
- afs_check_for_remote_deletion(&fc, vnode);
- afs_vnode_commit_status(&fc, vnode, fc.cb_break, NULL, scb);
- ret = afs_end_vnode_operation(&fc);
- }
+ afs_op_set_vnode(op, 0, vnode);
- kfree(scb);
- _leave(" = %d", ret);
- return ret;
+ op->lock.type = type;
+ op->ops = &afs_set_lock_operation;
+ return afs_do_sync_operation(op);
}
+static const struct afs_operation_ops afs_extend_lock_operation = {
+ .issue_afs_rpc = afs_fs_extend_lock,
+ .issue_yfs_rpc = yfs_fs_extend_lock,
+ .success = afs_lock_success,
+};
+
/*
* Extend a lock on a file
*/
static int afs_extend_lock(struct afs_vnode *vnode, struct key *key)
{
- struct afs_status_cb *scb;
- struct afs_fs_cursor fc;
- int ret;
+ struct afs_operation *op;
_enter("%s{%llx:%llu.%u},%x",
vnode->volume->name,
@@ -226,35 +232,29 @@ static int afs_extend_lock(struct afs_vnode *vnode, struct key *key)
vnode->fid.unique,
key_serial(key));
- scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
- return -ENOMEM;
+ op = afs_alloc_operation(key, vnode->volume);
+ if (IS_ERR(op))
+ return PTR_ERR(op);
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, key, false)) {
- while (afs_select_current_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(vnode);
- afs_fs_extend_lock(&fc, scb);
- }
-
- afs_check_for_remote_deletion(&fc, vnode);
- afs_vnode_commit_status(&fc, vnode, fc.cb_break, NULL, scb);
- ret = afs_end_vnode_operation(&fc);
- }
+ afs_op_set_vnode(op, 0, vnode);
- kfree(scb);
- _leave(" = %d", ret);
- return ret;
+ op->flags |= AFS_OPERATION_UNINTR;
+ op->ops = &afs_extend_lock_operation;
+ return afs_do_sync_operation(op);
}
+static const struct afs_operation_ops afs_release_lock_operation = {
+ .issue_afs_rpc = afs_fs_release_lock,
+ .issue_yfs_rpc = yfs_fs_release_lock,
+ .success = afs_lock_success,
+};
+
/*
* Release a lock on a file
*/
static int afs_release_lock(struct afs_vnode *vnode, struct key *key)
{
- struct afs_status_cb *scb;
- struct afs_fs_cursor fc;
- int ret;
+ struct afs_operation *op;
_enter("%s{%llx:%llu.%u},%x",
vnode->volume->name,
@@ -263,25 +263,15 @@ static int afs_release_lock(struct afs_vnode *vnode, struct key *key)
vnode->fid.unique,
key_serial(key));
- scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
- return -ENOMEM;
-
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, key, false)) {
- while (afs_select_current_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(vnode);
- afs_fs_release_lock(&fc, scb);
- }
+ op = afs_alloc_operation(key, vnode->volume);
+ if (IS_ERR(op))
+ return PTR_ERR(op);
- afs_check_for_remote_deletion(&fc, vnode);
- afs_vnode_commit_status(&fc, vnode, fc.cb_break, NULL, scb);
- ret = afs_end_vnode_operation(&fc);
- }
+ afs_op_set_vnode(op, 0, vnode);
- kfree(scb);
- _leave(" = %d", ret);
- return ret;
+ op->flags |= AFS_OPERATION_UNINTR;
+ op->ops = &afs_release_lock_operation;
+ return afs_do_sync_operation(op);
}
/*
diff --git a/fs/afs/fs_operation.c b/fs/afs/fs_operation.c
new file mode 100644
index 000000000000..c264839b2fd0
--- /dev/null
+++ b/fs/afs/fs_operation.c
@@ -0,0 +1,247 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* Fileserver-directed operation handling.
+ *
+ * Copyright (C) 2020 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ */
+
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/fs.h>
+#include "internal.h"
+
+static atomic_t afs_operation_debug_counter;
+
+/*
+ * Create an operation against a volume.
+ */
+struct afs_operation *afs_alloc_operation(struct key *key, struct afs_volume *volume)
+{
+ struct afs_operation *op;
+
+ _enter("");
+
+ op = kzalloc(sizeof(*op), GFP_KERNEL);
+ if (!op)
+ return ERR_PTR(-ENOMEM);
+
+ if (!key) {
+ key = afs_request_key(volume->cell);
+ if (IS_ERR(key)) {
+ kfree(op);
+ return ERR_CAST(key);
+ }
+ } else {
+ key_get(key);
+ }
+
+ op->key = key;
+ op->volume = afs_get_volume(volume, afs_volume_trace_get_new_op);
+ op->net = volume->cell->net;
+ op->cb_v_break = volume->cb_v_break;
+ op->debug_id = atomic_inc_return(&afs_operation_debug_counter);
+ op->error = -EDESTADDRREQ;
+ op->ac.error = SHRT_MAX;
+
+ _leave(" = [op=%08x]", op->debug_id);
+ return op;
+}
+
+/*
+ * Lock the vnode(s) being operated upon.
+ */
+static bool afs_get_io_locks(struct afs_operation *op)
+{
+ struct afs_vnode *vnode = op->file[0].vnode;
+ struct afs_vnode *vnode2 = op->file[1].vnode;
+
+ _enter("");
+
+ if (op->flags & AFS_OPERATION_UNINTR) {
+ mutex_lock(&vnode->io_lock);
+ op->flags |= AFS_OPERATION_LOCK_0;
+ _leave(" = t [1]");
+ return true;
+ }
+
+ if (!vnode2 || !op->file[1].need_io_lock || vnode == vnode2)
+ vnode2 = NULL;
+
+ if (vnode2 > vnode)
+ swap(vnode, vnode2);
+
+ if (mutex_lock_interruptible(&vnode->io_lock) < 0) {
+ op->error = -EINTR;
+ op->flags |= AFS_OPERATION_STOP;
+ _leave(" = f [I 0]");
+ return false;
+ }
+ op->flags |= AFS_OPERATION_LOCK_0;
+
+ if (vnode2) {
+ if (mutex_lock_interruptible_nested(&vnode2->io_lock, 1) < 0) {
+ op->error = -EINTR;
+ op->flags |= AFS_OPERATION_STOP;
+ mutex_unlock(&vnode->io_lock);
+ op->flags &= ~AFS_OPERATION_LOCK_0;
+ _leave(" = f [I 1]");
+ return false;
+ }
+ op->flags |= AFS_OPERATION_LOCK_1;
+ }
+
+ _leave(" = t [2]");
+ return true;
+}
+
+static void afs_drop_io_locks(struct afs_operation *op)
+{
+ struct afs_vnode *vnode = op->file[0].vnode;
+ struct afs_vnode *vnode2 = op->file[1].vnode;
+
+ _enter("");
+
+ if (op->flags & AFS_OPERATION_LOCK_1)
+ mutex_unlock(&vnode2->io_lock);
+ if (op->flags & AFS_OPERATION_LOCK_0)
+ mutex_unlock(&vnode->io_lock);
+}
+
+static void afs_prepare_vnode(struct afs_operation *op, struct afs_vnode_param *vp,
+ unsigned int index)
+{
+ struct afs_vnode *vnode = vp->vnode;
+
+ if (vnode) {
+ vp->fid = vnode->fid;
+ vp->dv_before = vnode->status.data_version;
+ vp->cb_break_before = afs_calc_vnode_cb_break(vnode);
+ if (vnode->lock_state != AFS_VNODE_LOCK_NONE)
+ op->flags |= AFS_OPERATION_CUR_ONLY;
+ }
+
+ if (vp->fid.vnode)
+ _debug("PREP[%u] {%llx:%llu.%u}",
+ index, vp->fid.vid, vp->fid.vnode, vp->fid.unique);
+}
+
+/*
+ * Begin an operation on the fileserver.
+ *
+ * Fileserver operations are serialised on the server by vnode, so we serialise
+ * them here also using the io_lock.
+ */
+bool afs_begin_vnode_operation(struct afs_operation *op)
+{
+ struct afs_vnode *vnode = op->file[0].vnode;
+
+ ASSERT(vnode);
+
+ _enter("");
+
+ if (op->file[0].need_io_lock)
+ if (!afs_get_io_locks(op))
+ return false;
+
+ afs_prepare_vnode(op, &op->file[0], 0);
+ afs_prepare_vnode(op, &op->file[1], 1);
+ op->cb_v_break = op->volume->cb_v_break;
+ _leave(" = true");
+ return true;
+}
+
+/*
+ * Tidy up a filesystem cursor and unlock the vnode.
+ */
+static void afs_end_vnode_operation(struct afs_operation *op)
+{
+ _enter("");
+
+ if (op->error == -EDESTADDRREQ ||
+ op->error == -EADDRNOTAVAIL ||
+ op->error == -ENETUNREACH ||
+ op->error == -EHOSTUNREACH)
+ afs_dump_edestaddrreq(op);
+
+ afs_drop_io_locks(op);
+
+ if (op->error == -ECONNABORTED)
+ op->error = afs_abort_to_error(op->ac.abort_code);
+}
+
+/*
+ * Wait for an in-progress operation to complete.
+ */
+void afs_wait_for_operation(struct afs_operation *op)
+{
+ _enter("");
+
+ while (afs_select_fileserver(op)) {
+ op->cb_s_break = op->server->cb_s_break;
+ if (test_bit(AFS_SERVER_FL_IS_YFS, &op->server->flags) &&
+ op->ops->issue_yfs_rpc)
+ op->ops->issue_yfs_rpc(op);
+ else
+ op->ops->issue_afs_rpc(op);
+
+ op->error = afs_wait_for_call_to_complete(op->call, &op->ac);
+ }
+
+ switch (op->error) {
+ case 0:
+ _debug("success");
+ op->ops->success(op);
+ break;
+ case -ECONNABORTED:
+ if (op->ops->aborted)
+ op->ops->aborted(op);
+ break;
+ default:
+ break;
+ }
+
+ afs_end_vnode_operation(op);
+
+ if (op->error == 0 && op->ops->edit_dir) {
+ _debug("edit_dir");
+ op->ops->edit_dir(op);
+ }
+ _leave("");
+}
+
+/*
+ * Dispose of an operation.
+ */
+int afs_put_operation(struct afs_operation *op)
+{
+ int i, ret = op->error;
+
+ _enter("op=%08x,%d", op->debug_id, ret);
+
+ if (op->ops && op->ops->put)
+ op->ops->put(op);
+ if (op->file[0].put_vnode)
+ iput(&op->file[0].vnode->vfs_inode);
+ if (op->file[1].put_vnode)
+ iput(&op->file[1].vnode->vfs_inode);
+
+ if (op->more_files) {
+ for (i = 0; i < op->nr_files - 2; i++)
+ if (op->more_files[i].put_vnode)
+ iput(&op->more_files[i].vnode->vfs_inode);
+ kfree(op->more_files);
+ }
+
+ afs_end_cursor(&op->ac);
+ afs_put_serverlist(op->net, op->server_list);
+ afs_put_volume(op->net, op->volume, afs_volume_trace_put_put_op);
+ kfree(op);
+ return ret;
+}
+
+int afs_do_sync_operation(struct afs_operation *op)
+{
+ afs_begin_vnode_operation(op);
+ afs_wait_for_operation(op);
+ return afs_put_operation(op);
+}
diff --git a/fs/afs/fs_probe.c b/fs/afs/fs_probe.c
index e1b9ed679045..5d9ef517cf81 100644
--- a/fs/afs/fs_probe.c
+++ b/fs/afs/fs_probe.c
@@ -1,7 +1,7 @@
// SPDX-License-Identifier: GPL-2.0-or-later
/* AFS fileserver probing
*
- * Copyright (C) 2018 Red Hat, Inc. All Rights Reserved.
+ * Copyright (C) 2018, 2020 Red Hat, Inc. All Rights Reserved.
* Written by David Howells (dhowells@redhat.com)
*/
@@ -11,15 +11,86 @@
#include "internal.h"
#include "protocol_yfs.h"
-static bool afs_fs_probe_done(struct afs_server *server)
+static unsigned int afs_fs_probe_fast_poll_interval = 30 * HZ;
+static unsigned int afs_fs_probe_slow_poll_interval = 5 * 60 * HZ;
+
+/*
+ * Start the probe polling timer. We have to supply it with an inc on the
+ * outstanding server count.
+ */
+static void afs_schedule_fs_probe(struct afs_net *net,
+ struct afs_server *server, bool fast)
+{
+ unsigned long atj;
+
+ if (!net->live)
+ return;
+
+ atj = server->probed_at;
+ atj += fast ? afs_fs_probe_fast_poll_interval : afs_fs_probe_slow_poll_interval;
+
+ afs_inc_servers_outstanding(net);
+ if (timer_reduce(&net->fs_probe_timer, atj))
+ afs_dec_servers_outstanding(net);
+}
+
+/*
+ * Handle the completion of a set of probes.
+ */
+static void afs_finished_fs_probe(struct afs_net *net, struct afs_server *server)
+{
+ bool responded = server->probe.responded;
+
+ write_seqlock(&net->fs_lock);
+ if (responded) {
+ list_add_tail(&server->probe_link, &net->fs_probe_slow);
+ } else {
+ server->rtt = UINT_MAX;
+ clear_bit(AFS_SERVER_FL_RESPONDING, &server->flags);
+ list_add_tail(&server->probe_link, &net->fs_probe_fast);
+ }
+ write_sequnlock(&net->fs_lock);
+
+ afs_schedule_fs_probe(net, server, !responded);
+}
+
+/*
+ * Handle the completion of a probe.
+ */
+static void afs_done_one_fs_probe(struct afs_net *net, struct afs_server *server)
+{
+ _enter("");
+
+ if (atomic_dec_and_test(&server->probe_outstanding))
+ afs_finished_fs_probe(net, server);
+
+ wake_up_all(&server->probe_wq);
+}
+
+/*
+ * Handle inability to send a probe due to ENOMEM when trying to allocate a
+ * call struct.
+ */
+static void afs_fs_probe_not_done(struct afs_net *net,
+ struct afs_server *server,
+ struct afs_addr_cursor *ac)
{
- if (!atomic_dec_and_test(&server->probe_outstanding))
- return false;
+ struct afs_addr_list *alist = ac->alist;
+ unsigned int index = ac->index;
+
+ _enter("");
- wake_up_var(&server->probe_outstanding);
- clear_bit_unlock(AFS_SERVER_FL_PROBING, &server->flags);
- wake_up_bit(&server->flags, AFS_SERVER_FL_PROBING);
- return true;
+ trace_afs_io_error(0, -ENOMEM, afs_io_error_fs_probe_fail);
+ spin_lock(&server->probe_lock);
+
+ server->probe.local_failure = true;
+ if (server->probe.error == 0)
+ server->probe.error = -ENOMEM;
+
+ set_bit(index, &alist->failed);
+
+ spin_unlock(&server->probe_lock);
+ return afs_done_one_fs_probe(net, server);
}
/*
@@ -30,11 +101,8 @@ void afs_fileserver_probe_result(struct afs_call *call)
{
struct afs_addr_list *alist = call->alist;
struct afs_server *server = call->server;
- unsigned int server_index = call->server_index;
unsigned int index = call->addr_ix;
- unsigned int rtt = UINT_MAX;
- bool have_result = false;
- u64 _rtt;
+ unsigned int rtt_us = 0;
int ret = call->error;
_enter("%pU,%u", &server->uuid, index);
@@ -53,8 +121,9 @@ void afs_fileserver_probe_result(struct afs_call *call)
goto responded;
case -ENOMEM:
case -ENONET:
+ clear_bit(index, &alist->responded);
server->probe.local_failure = true;
- afs_io_error(call, afs_io_error_fs_probe_fail);
+ trace_afs_io_error(call->debug_id, ret, afs_io_error_fs_probe_fail);
goto out;
case -ECONNRESET: /* Responded, but call expired. */
case -ERFKILL:
@@ -73,12 +142,11 @@ void afs_fileserver_probe_result(struct afs_call *call)
server->probe.error == -ETIMEDOUT ||
server->probe.error == -ETIME))
server->probe.error = ret;
- afs_io_error(call, afs_io_error_fs_probe_fail);
+ trace_afs_io_error(call->debug_id, ret, afs_io_error_fs_probe_fail);
goto out;
}
responded:
- set_bit(index, &alist->responded);
clear_bit(index, &alist->failed);
if (call->service_id == YFS_FS_SERVICE) {
@@ -93,52 +161,37 @@ responded:
}
}
- /* Get the RTT and scale it to fit into a 32-bit value that represents
- * over a minute of time so that we can access it with one instruction
- * on a 32-bit system.
- */
- _rtt = rxrpc_kernel_get_rtt(call->net->socket, call->rxcall);
- _rtt /= 64;
- rtt = (_rtt > UINT_MAX) ? UINT_MAX : _rtt;
- if (rtt < server->probe.rtt) {
- server->probe.rtt = rtt;
+ rtt_us = rxrpc_kernel_get_srtt(call->net->socket, call->rxcall);
+ if (rtt_us < server->probe.rtt) {
+ server->probe.rtt = rtt_us;
+ server->rtt = rtt_us;
alist->preferred = index;
- have_result = true;
}
smp_wmb(); /* Set rtt before responded. */
server->probe.responded = true;
- set_bit(AFS_SERVER_FL_PROBED, &server->flags);
+ set_bit(index, &alist->responded);
+ set_bit(AFS_SERVER_FL_RESPONDING, &server->flags);
out:
spin_unlock(&server->probe_lock);
- _debug("probe [%u][%u] %pISpc rtt=%u ret=%d",
- server_index, index, &alist->addrs[index].transport,
- (unsigned int)rtt, ret);
+ _debug("probe %pU [%u] %pISpc rtt=%u ret=%d",
+ &server->uuid, index, &alist->addrs[index].transport,
+ rtt_us, ret);
- have_result |= afs_fs_probe_done(server);
- if (have_result) {
- server->probe.have_result = true;
- wake_up_var(&server->probe.have_result);
- wake_up_all(&server->probe_wq);
- }
+ return afs_done_one_fs_probe(call->net, server);
}
/*
- * Probe all of a fileserver's addresses to find out the best route and to
- * query its capabilities.
+ * Probe one or all of a fileserver's addresses to find out the best route and
+ * to query its capabilities.
*/
-static int afs_do_probe_fileserver(struct afs_net *net,
- struct afs_server *server,
- struct key *key,
- unsigned int server_index,
- struct afs_error *_e)
+void afs_fs_probe_fileserver(struct afs_net *net, struct afs_server *server,
+ struct key *key, bool all)
{
struct afs_addr_cursor ac = {
.index = 0,
};
- struct afs_call *call;
- bool in_progress = false;
_enter("%pU", &server->uuid);
@@ -148,50 +201,25 @@ static int afs_do_probe_fileserver(struct afs_net *net,
afs_get_addrlist(ac.alist);
read_unlock(&server->fs_lock);
- atomic_set(&server->probe_outstanding, ac.alist->nr_addrs);
+ server->probed_at = jiffies;
+ atomic_set(&server->probe_outstanding, all ? ac.alist->nr_addrs : 1);
memset(&server->probe, 0, sizeof(server->probe));
server->probe.rtt = UINT_MAX;
- for (ac.index = 0; ac.index < ac.alist->nr_addrs; ac.index++) {
- call = afs_fs_get_capabilities(net, server, &ac, key, server_index);
- if (!IS_ERR(call)) {
- afs_put_call(call);
- in_progress = true;
- } else {
- afs_prioritise_error(_e, PTR_ERR(call), ac.abort_code);
- }
- }
-
- if (!in_progress)
- afs_fs_probe_done(server);
- afs_put_addrlist(ac.alist);
- return in_progress;
-}
+ ac.index = ac.alist->preferred;
+ if (ac.index < 0 || ac.index >= ac.alist->nr_addrs)
+ all = true;
-/*
- * Send off probes to all unprobed servers.
- */
-int afs_probe_fileservers(struct afs_net *net, struct key *key,
- struct afs_server_list *list)
-{
- struct afs_server *server;
- struct afs_error e;
- bool in_progress = false;
- int i;
-
- e.error = 0;
- e.responded = false;
- for (i = 0; i < list->nr_servers; i++) {
- server = list->servers[i].server;
- if (test_bit(AFS_SERVER_FL_PROBED, &server->flags))
- continue;
-
- if (!test_and_set_bit_lock(AFS_SERVER_FL_PROBING, &server->flags) &&
- afs_do_probe_fileserver(net, server, key, i, &e))
- in_progress = true;
+ if (all) {
+ for (ac.index = 0; ac.index < ac.alist->nr_addrs; ac.index++)
+ if (!afs_fs_get_capabilities(net, server, &ac, key))
+ afs_fs_probe_not_done(net, server, &ac);
+ } else {
+ if (!afs_fs_get_capabilities(net, server, &ac, key))
+ afs_fs_probe_not_done(net, server, &ac);
}
- return in_progress ? 0 : e.error;
+ afs_put_addrlist(ac.alist);
}
/*
@@ -201,7 +229,7 @@ int afs_wait_for_fs_probes(struct afs_server_list *slist, unsigned long untried)
{
struct wait_queue_entry *waits;
struct afs_server *server;
- unsigned int rtt = UINT_MAX;
+ unsigned int rtt = UINT_MAX, rtt_s;
bool have_responders = false;
int pref = -1, i;
@@ -211,7 +239,7 @@ int afs_wait_for_fs_probes(struct afs_server_list *slist, unsigned long untried)
for (i = 0; i < slist->nr_servers; i++) {
if (test_bit(i, &untried)) {
server = slist->servers[i].server;
- if (!test_bit(AFS_SERVER_FL_PROBING, &server->flags))
+ if (!atomic_read(&server->probe_outstanding))
__clear_bit(i, &untried);
if (server->probe.responded)
have_responders = true;
@@ -241,7 +269,7 @@ int afs_wait_for_fs_probes(struct afs_server_list *slist, unsigned long untried)
server = slist->servers[i].server;
if (server->probe.responded)
goto stop;
- if (test_bit(AFS_SERVER_FL_PROBING, &server->flags))
+ if (atomic_read(&server->probe_outstanding))
still_probing = true;
}
}
@@ -257,10 +285,11 @@ stop:
for (i = 0; i < slist->nr_servers; i++) {
if (test_bit(i, &untried)) {
server = slist->servers[i].server;
- if (server->probe.responded &&
- server->probe.rtt < rtt) {
+ rtt_s = READ_ONCE(server->rtt);
+ if (test_bit(AFS_SERVER_FL_RESPONDING, &server->flags) &&
+ rtt_s < rtt) {
pref = i;
- rtt = server->probe.rtt;
+ rtt = rtt_s;
}
remove_wait_queue(&server->probe_wq, &waits[i]);
@@ -276,3 +305,165 @@ stop:
slist->preferred = pref;
return 0;
}
+
+/*
+ * Probe timer. We have an increment on fs_outstanding that we need to pass
+ * along to the work item.
+ */
+void afs_fs_probe_timer(struct timer_list *timer)
+{
+ struct afs_net *net = container_of(timer, struct afs_net, fs_probe_timer);
+
+ if (!net->live || !queue_work(afs_wq, &net->fs_prober))
+ afs_dec_servers_outstanding(net);
+}
+
+/*
+ * Dispatch a probe to a server.
+ */
+static void afs_dispatch_fs_probe(struct afs_net *net, struct afs_server *server, bool all)
+ __releases(&net->fs_lock)
+{
+ struct key *key = NULL;
+
+ /* We remove it from the queues here - it will be added back to
+ * one of the queues on the completion of the probe.
+ */
+ list_del_init(&server->probe_link);
+
+ afs_get_server(server, afs_server_trace_get_probe);
+ write_sequnlock(&net->fs_lock);
+
+ afs_fs_probe_fileserver(net, server, key, all);
+ afs_put_server(net, server, afs_server_trace_put_probe);
+}
+
+/*
+ * Probe a server immediately without waiting for its due time to come
+ * round. This is used when all of the addresses have been tried.
+ */
+void afs_probe_fileserver(struct afs_net *net, struct afs_server *server)
+{
+ write_seqlock(&net->fs_lock);
+ if (!list_empty(&server->probe_link))
+ return afs_dispatch_fs_probe(net, server, true);
+ write_sequnlock(&net->fs_lock);
+}
+
+/*
+ * Probe dispatcher to regularly dispatch probes to keep NAT alive.
+ */
+void afs_fs_probe_dispatcher(struct work_struct *work)
+{
+ struct afs_net *net = container_of(work, struct afs_net, fs_prober);
+ struct afs_server *fast, *slow, *server;
+ unsigned long nowj, timer_at, poll_at;
+ bool first_pass = true, set_timer = false;
+
+ if (!net->live)
+ return;
+
+ _enter("");
+
+ if (list_empty(&net->fs_probe_fast) && list_empty(&net->fs_probe_slow)) {
+ _leave(" [none]");
+ return;
+ }
+
+again:
+ write_seqlock(&net->fs_lock);
+
+ fast = slow = server = NULL;
+ nowj = jiffies;
+ timer_at = nowj + MAX_JIFFY_OFFSET;
+
+ if (!list_empty(&net->fs_probe_fast)) {
+ fast = list_first_entry(&net->fs_probe_fast, struct afs_server, probe_link);
+ poll_at = fast->probed_at + afs_fs_probe_fast_poll_interval;
+ if (time_before(nowj, poll_at)) {
+ timer_at = poll_at;
+ set_timer = true;
+ fast = NULL;
+ }
+ }
+
+ if (!list_empty(&net->fs_probe_slow)) {
+ slow = list_first_entry(&net->fs_probe_slow, struct afs_server, probe_link);
+ poll_at = slow->probed_at + afs_fs_probe_slow_poll_interval;
+ if (time_before(nowj, poll_at)) {
+ if (time_before(poll_at, timer_at))
+ timer_at = poll_at;
+ set_timer = true;
+ slow = NULL;
+ }
+ }
+
+ server = fast ?: slow;
+ if (server)
+ _debug("probe %pU", &server->uuid);
+
+ if (server && (first_pass || !need_resched())) {
+ afs_dispatch_fs_probe(net, server, server == fast);
+ first_pass = false;
+ goto again;
+ }
+
+ write_sequnlock(&net->fs_lock);
+
+ if (server) {
+ if (!queue_work(afs_wq, &net->fs_prober))
+ afs_dec_servers_outstanding(net);
+ _leave(" [requeue]");
+ } else if (set_timer) {
+ if (timer_reduce(&net->fs_probe_timer, timer_at))
+ afs_dec_servers_outstanding(net);
+ _leave(" [timer]");
+ } else {
+ afs_dec_servers_outstanding(net);
+ _leave(" [quiesce]");
+ }
+}
+
+/*
+ * Wait for a probe on a particular fileserver to complete for 2s.
+ */
+int afs_wait_for_one_fs_probe(struct afs_server *server, bool is_intr)
+{
+ struct wait_queue_entry wait;
+ unsigned long timo = 2 * HZ;
+
+ if (atomic_read(&server->probe_outstanding) == 0)
+ goto dont_wait;
+
+ init_wait_entry(&wait, 0);
+ for (;;) {
+ prepare_to_wait_event(&server->probe_wq, &wait,
+ is_intr ? TASK_INTERRUPTIBLE : TASK_UNINTERRUPTIBLE);
+ if (timo == 0 ||
+ server->probe.responded ||
+ atomic_read(&server->probe_outstanding) == 0 ||
+ (is_intr && signal_pending(current)))
+ break;
+ timo = schedule_timeout(timo);
+ }
+
+ finish_wait(&server->probe_wq, &wait);
+
+dont_wait:
+ if (server->probe.responded)
+ return 0;
+ if (is_intr && signal_pending(current))
+ return -ERESTARTSYS;
+ if (timo == 0)
+ return -ETIME;
+ return -EDESTADDRREQ;
+}
+
+/*
+ * Clean up the probing when the namespace is killed off.
+ */
+void afs_fs_probe_cleanup(struct afs_net *net)
+{
+ if (del_timer_sync(&net->fs_probe_timer))
+ afs_dec_servers_outstanding(net);
+}
diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c
index 1f9c5d8e6fe5..acb4d0ca2649 100644
--- a/fs/afs/fsclient.c
+++ b/fs/afs/fsclient.c
@@ -13,12 +13,6 @@
#include "internal.h"
#include "afs_fs.h"
#include "xdr_fs.h"
-#include "protocol_yfs.h"
-
-static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi)
-{
- call->cbi = afs_get_cb_interest(cbi);
-}
/*
* decode an AFSFid block
@@ -56,9 +50,9 @@ static void xdr_dump_bad(const __be32 *bp)
/*
* decode an AFSFetchStatus block
*/
-static int xdr_decode_AFSFetchStatus(const __be32 **_bp,
- struct afs_call *call,
- struct afs_status_cb *scb)
+static void xdr_decode_AFSFetchStatus(const __be32 **_bp,
+ struct afs_call *call,
+ struct afs_status_cb *scb)
{
const struct afs_xdr_AFSFetchStatus *xdr = (const void *)*_bp;
struct afs_file_status *status = &scb->status;
@@ -78,7 +72,7 @@ static int xdr_decode_AFSFetchStatus(const __be32 **_bp,
*/
status->abort_code = abort_code;
scb->have_error = true;
- return 0;
+ goto advance;
}
pr_warn("Unknown AFSFetchStatus version %u\n", ntohl(xdr->if_version));
@@ -87,7 +81,8 @@ static int xdr_decode_AFSFetchStatus(const __be32 **_bp,
if (abort_code != 0 && inline_error) {
status->abort_code = abort_code;
- return 0;
+ scb->have_error = true;
+ goto advance;
}
type = ntohl(xdr->type);
@@ -123,13 +118,14 @@ static int xdr_decode_AFSFetchStatus(const __be32 **_bp,
data_version |= (u64)ntohl(xdr->data_version_hi) << 32;
status->data_version = data_version;
scb->have_status = true;
-
+advance:
*_bp = (const void *)*_bp + sizeof(*xdr);
- return 0;
+ return;
bad:
xdr_dump_bad(*_bp);
- return afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
+ afs_protocol_error(call, afs_eproto_bad_status);
+ goto advance;
}
static time64_t xdr_decode_expiry(struct afs_call *call, u32 expiry)
@@ -238,8 +234,10 @@ static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp,
/*
* deliver reply data to an FS.FetchStatus
*/
-static int afs_deliver_fs_fetch_status_vnode(struct afs_call *call)
+static int afs_deliver_fs_fetch_status(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
const __be32 *bp;
int ret;
@@ -249,11 +247,9 @@ static int afs_deliver_fs_fetch_status_vnode(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- xdr_decode_AFSCallBack(&bp, call, call->out_scb);
- xdr_decode_AFSVolSync(&bp, call->out_volsync);
+ xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_AFSCallBack(&bp, call, &vp->scb);
+ xdr_decode_AFSVolSync(&bp, &op->volsync);
_leave(" = 0 [done]");
return 0;
@@ -262,54 +258,39 @@ static int afs_deliver_fs_fetch_status_vnode(struct afs_call *call)
/*
* FS.FetchStatus operation type
*/
-static const struct afs_call_type afs_RXFSFetchStatus_vnode = {
- .name = "FS.FetchStatus(vnode)",
+static const struct afs_call_type afs_RXFSFetchStatus = {
+ .name = "FS.FetchStatus",
.op = afs_FS_FetchStatus,
- .deliver = afs_deliver_fs_fetch_status_vnode,
+ .deliver = afs_deliver_fs_fetch_status,
.destructor = afs_flat_call_destructor,
};
/*
* fetch the status information for a file
*/
-int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_status_cb *scb,
- struct afs_volsync *volsync)
+void afs_fs_fetch_status(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
- return yfs_fs_fetch_file_status(fc, scb, volsync);
-
_enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus_vnode,
+ call = afs_alloc_flat_call(op->net, &afs_RXFSFetchStatus,
16, (21 + 3 + 6) * 4);
- if (!call) {
- fc->ac.error = -ENOMEM;
- return -ENOMEM;
- }
-
- call->key = fc->key;
- call->out_scb = scb;
- call->out_volsync = volsync;
+ if (!call)
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp[0] = htonl(FSFETCHSTATUS);
- bp[1] = htonl(vnode->fid.vid);
- bp[2] = htonl(vnode->fid.vnode);
- bp[3] = htonl(vnode->fid.unique);
+ bp[1] = htonl(vp->fid.vid);
+ bp[2] = htonl(vp->fid.vnode);
+ bp[3] = htonl(vp->fid.unique);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
-
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -317,7 +298,9 @@ int afs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_status_cb *scb
*/
static int afs_deliver_fs_fetch_data(struct afs_call *call)
{
- struct afs_read *req = call->read_request;
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_read *req = op->fetch.req;
const __be32 *bp;
unsigned int size;
int ret;
@@ -380,8 +363,6 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call)
ASSERTCMP(req->offset, <=, PAGE_SIZE);
if (req->offset == PAGE_SIZE) {
req->offset = 0;
- if (req->page_done)
- req->page_done(req);
req->index++;
if (req->remain > 0)
goto begin_page;
@@ -416,14 +397,12 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- xdr_decode_AFSCallBack(&bp, call, call->out_scb);
- xdr_decode_AFSVolSync(&bp, call->out_volsync);
+ xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_AFSCallBack(&bp, call, &vp->scb);
+ xdr_decode_AFSVolSync(&bp, &op->volsync);
- req->data_version = call->out_scb->status.data_version;
- req->file_size = call->out_scb->status.size;
+ req->data_version = vp->scb.status.data_version;
+ req->file_size = vp->scb.status.size;
call->unmarshall++;
@@ -435,23 +414,17 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call)
if (req->offset < PAGE_SIZE)
zero_user_segment(req->pages[req->index],
req->offset, PAGE_SIZE);
- if (req->page_done)
- req->page_done(req);
req->offset = 0;
}
+ if (req->page_done)
+ for (req->index = 0; req->index < req->nr_pages; req->index++)
+ req->page_done(req);
+
_leave(" = 0 [done]");
return 0;
}
-static void afs_fetch_data_destructor(struct afs_call *call)
-{
- struct afs_read *req = call->read_request;
-
- afs_put_read(req);
- afs_flat_call_destructor(call);
-}
-
/*
* FS.FetchData operation type
*/
@@ -459,102 +432,79 @@ static const struct afs_call_type afs_RXFSFetchData = {
.name = "FS.FetchData",
.op = afs_FS_FetchData,
.deliver = afs_deliver_fs_fetch_data,
- .destructor = afs_fetch_data_destructor,
+ .destructor = afs_flat_call_destructor,
};
static const struct afs_call_type afs_RXFSFetchData64 = {
.name = "FS.FetchData64",
.op = afs_FS_FetchData64,
.deliver = afs_deliver_fs_fetch_data,
- .destructor = afs_fetch_data_destructor,
+ .destructor = afs_flat_call_destructor,
};
/*
* fetch data from a very large file
*/
-static int afs_fs_fetch_data64(struct afs_fs_cursor *fc,
- struct afs_status_cb *scb,
- struct afs_read *req)
+static void afs_fs_fetch_data64(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_read *req = op->fetch.req;
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
_enter("");
- call = afs_alloc_flat_call(net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
+ call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData64, 32, (21 + 3 + 6) * 4);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_scb = scb;
- call->out_volsync = NULL;
- call->read_request = afs_get_read(req);
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp[0] = htonl(FSFETCHDATA64);
- bp[1] = htonl(vnode->fid.vid);
- bp[2] = htonl(vnode->fid.vnode);
- bp[3] = htonl(vnode->fid.unique);
+ bp[1] = htonl(vp->fid.vid);
+ bp[2] = htonl(vp->fid.vnode);
+ bp[3] = htonl(vp->fid.unique);
bp[4] = htonl(upper_32_bits(req->pos));
bp[5] = htonl(lower_32_bits(req->pos));
bp[6] = 0;
bp[7] = htonl(lower_32_bits(req->len));
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
* fetch data from a file
*/
-int afs_fs_fetch_data(struct afs_fs_cursor *fc,
- struct afs_status_cb *scb,
- struct afs_read *req)
+void afs_fs_fetch_data(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
+ struct afs_read *req = op->fetch.req;
__be32 *bp;
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
- return yfs_fs_fetch_data(fc, scb, req);
-
if (upper_32_bits(req->pos) ||
upper_32_bits(req->len) ||
upper_32_bits(req->pos + req->len))
- return afs_fs_fetch_data64(fc, scb, req);
+ return afs_fs_fetch_data64(op);
_enter("");
- call = afs_alloc_flat_call(net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4);
+ call = afs_alloc_flat_call(op->net, &afs_RXFSFetchData, 24, (21 + 3 + 6) * 4);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_scb = scb;
- call->out_volsync = NULL;
- call->read_request = afs_get_read(req);
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp[0] = htonl(FSFETCHDATA);
- bp[1] = htonl(vnode->fid.vid);
- bp[2] = htonl(vnode->fid.vnode);
- bp[3] = htonl(vnode->fid.unique);
+ bp[1] = htonl(vp->fid.vid);
+ bp[2] = htonl(vp->fid.vnode);
+ bp[3] = htonl(vp->fid.unique);
bp[4] = htonl(lower_32_bits(req->pos));
bp[5] = htonl(lower_32_bits(req->len));
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -562,6 +512,9 @@ int afs_fs_fetch_data(struct afs_fs_cursor *fc,
*/
static int afs_deliver_fs_create_vnode(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
const __be32 *bp;
int ret;
@@ -571,15 +524,11 @@ static int afs_deliver_fs_create_vnode(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- xdr_decode_AFSFid(&bp, call->out_fid);
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
- xdr_decode_AFSCallBack(&bp, call, call->out_scb);
- xdr_decode_AFSVolSync(&bp, call->out_volsync);
+ xdr_decode_AFSFid(&bp, &op->file[1].fid);
+ xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
+ xdr_decode_AFSCallBack(&bp, call, &vp->scb);
+ xdr_decode_AFSVolSync(&bp, &op->volsync);
_leave(" = 0 [done]");
return 0;
@@ -595,6 +544,52 @@ static const struct afs_call_type afs_RXFSCreateFile = {
.destructor = afs_flat_call_destructor,
};
+/*
+ * Create a file.
+ */
+void afs_fs_create_file(struct afs_operation *op)
+{
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_call *call;
+ size_t namesz, reqsz, padsz;
+ __be32 *bp;
+
+ _enter("");
+
+ namesz = name->len;
+ padsz = (4 - (namesz & 3)) & 3;
+ reqsz = (5 * 4) + namesz + padsz + (6 * 4);
+
+ call = afs_alloc_flat_call(op->net, &afs_RXFSCreateFile,
+ reqsz, (3 + 21 + 21 + 3 + 6) * 4);
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(FSCREATEFILE);
+ *bp++ = htonl(dvp->fid.vid);
+ *bp++ = htonl(dvp->fid.vnode);
+ *bp++ = htonl(dvp->fid.unique);
+ *bp++ = htonl(namesz);
+ memcpy(bp, name->name, namesz);
+ bp = (void *) bp + namesz;
+ if (padsz > 0) {
+ memset(bp, 0, padsz);
+ bp = (void *) bp + padsz;
+ }
+ *bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
+ *bp++ = htonl(op->mtime.tv_sec); /* mtime */
+ *bp++ = 0; /* owner */
+ *bp++ = 0; /* group */
+ *bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */
+ *bp++ = 0; /* segment size */
+
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
static const struct afs_call_type afs_RXFSMakeDir = {
.name = "FS.MakeDir",
.op = afs_FS_MakeDir,
@@ -603,80 +598,58 @@ static const struct afs_call_type afs_RXFSMakeDir = {
};
/*
- * create a file or make a directory
+ * Create a new directory
*/
-int afs_fs_create(struct afs_fs_cursor *fc,
- const char *name,
- umode_t mode,
- struct afs_status_cb *dvnode_scb,
- struct afs_fid *newfid,
- struct afs_status_cb *new_scb)
+void afs_fs_make_dir(struct afs_operation *op)
{
- struct afs_vnode *dvnode = fc->vnode;
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(dvnode);
size_t namesz, reqsz, padsz;
__be32 *bp;
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags)){
- if (S_ISDIR(mode))
- return yfs_fs_make_dir(fc, name, mode, dvnode_scb,
- newfid, new_scb);
- else
- return yfs_fs_create_file(fc, name, mode, dvnode_scb,
- newfid, new_scb);
- }
-
_enter("");
- namesz = strlen(name);
+ namesz = name->len;
padsz = (4 - (namesz & 3)) & 3;
reqsz = (5 * 4) + namesz + padsz + (6 * 4);
- call = afs_alloc_flat_call(
- net, S_ISDIR(mode) ? &afs_RXFSMakeDir : &afs_RXFSCreateFile,
- reqsz, (3 + 21 + 21 + 3 + 6) * 4);
+ call = afs_alloc_flat_call(op->net, &afs_RXFSMakeDir,
+ reqsz, (3 + 21 + 21 + 3 + 6) * 4);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_dir_scb = dvnode_scb;
- call->out_fid = newfid;
- call->out_scb = new_scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
- *bp++ = htonl(S_ISDIR(mode) ? FSMAKEDIR : FSCREATEFILE);
- *bp++ = htonl(dvnode->fid.vid);
- *bp++ = htonl(dvnode->fid.vnode);
- *bp++ = htonl(dvnode->fid.unique);
+ *bp++ = htonl(FSMAKEDIR);
+ *bp++ = htonl(dvp->fid.vid);
+ *bp++ = htonl(dvp->fid.vnode);
+ *bp++ = htonl(dvp->fid.unique);
*bp++ = htonl(namesz);
- memcpy(bp, name, namesz);
+ memcpy(bp, name->name, namesz);
bp = (void *) bp + namesz;
if (padsz > 0) {
memset(bp, 0, padsz);
bp = (void *) bp + padsz;
}
*bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
- *bp++ = htonl(dvnode->vfs_inode.i_mtime.tv_sec); /* mtime */
+ *bp++ = htonl(op->mtime.tv_sec); /* mtime */
*bp++ = 0; /* owner */
*bp++ = 0; /* group */
- *bp++ = htonl(mode & S_IALLUGO); /* unix mode */
+ *bp++ = htonl(op->create.mode & S_IALLUGO); /* unix mode */
*bp++ = 0; /* segment size */
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call1(call, &dvnode->fid, name);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
- * Deliver reply data to any operation that returns directory status and volume
- * sync.
+ * Deliver reply data to any operation that returns status and volume sync.
*/
-static int afs_deliver_fs_dir_status_and_vol(struct afs_call *call)
+static int afs_deliver_fs_file_status_and_vol(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *vp = &op->file[0];
const __be32 *bp;
int ret;
@@ -686,81 +659,108 @@ static int afs_deliver_fs_dir_status_and_vol(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
- xdr_decode_AFSVolSync(&bp, call->out_volsync);
+ xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_AFSVolSync(&bp, &op->volsync);
_leave(" = 0 [done]");
return 0;
}
/*
- * FS.RemoveDir/FS.RemoveFile operation type
+ * FS.RemoveFile operation type
*/
static const struct afs_call_type afs_RXFSRemoveFile = {
.name = "FS.RemoveFile",
.op = afs_FS_RemoveFile,
- .deliver = afs_deliver_fs_dir_status_and_vol,
+ .deliver = afs_deliver_fs_file_status_and_vol,
.destructor = afs_flat_call_destructor,
};
+/*
+ * Remove a file.
+ */
+void afs_fs_remove_file(struct afs_operation *op)
+{
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_call *call;
+ size_t namesz, reqsz, padsz;
+ __be32 *bp;
+
+ _enter("");
+
+ namesz = name->len;
+ padsz = (4 - (namesz & 3)) & 3;
+ reqsz = (5 * 4) + namesz + padsz;
+
+ call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveFile,
+ reqsz, (21 + 6) * 4);
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(FSREMOVEFILE);
+ *bp++ = htonl(dvp->fid.vid);
+ *bp++ = htonl(dvp->fid.vnode);
+ *bp++ = htonl(dvp->fid.unique);
+ *bp++ = htonl(namesz);
+ memcpy(bp, name->name, namesz);
+ bp = (void *) bp + namesz;
+ if (padsz > 0) {
+ memset(bp, 0, padsz);
+ bp = (void *) bp + padsz;
+ }
+
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
static const struct afs_call_type afs_RXFSRemoveDir = {
.name = "FS.RemoveDir",
.op = afs_FS_RemoveDir,
- .deliver = afs_deliver_fs_dir_status_and_vol,
+ .deliver = afs_deliver_fs_file_status_and_vol,
.destructor = afs_flat_call_destructor,
};
/*
- * remove a file or directory
+ * Remove a directory.
*/
-int afs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
- const char *name, bool isdir, struct afs_status_cb *dvnode_scb)
+void afs_fs_remove_dir(struct afs_operation *op)
{
- struct afs_vnode *dvnode = fc->vnode;
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(dvnode);
size_t namesz, reqsz, padsz;
__be32 *bp;
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
- return yfs_fs_remove(fc, vnode, name, isdir, dvnode_scb);
-
_enter("");
- namesz = strlen(name);
+ namesz = name->len;
padsz = (4 - (namesz & 3)) & 3;
reqsz = (5 * 4) + namesz + padsz;
- call = afs_alloc_flat_call(
- net, isdir ? &afs_RXFSRemoveDir : &afs_RXFSRemoveFile,
- reqsz, (21 + 6) * 4);
+ call = afs_alloc_flat_call(op->net, &afs_RXFSRemoveDir,
+ reqsz, (21 + 6) * 4);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_dir_scb = dvnode_scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
- *bp++ = htonl(isdir ? FSREMOVEDIR : FSREMOVEFILE);
- *bp++ = htonl(dvnode->fid.vid);
- *bp++ = htonl(dvnode->fid.vnode);
- *bp++ = htonl(dvnode->fid.unique);
+ *bp++ = htonl(FSREMOVEDIR);
+ *bp++ = htonl(dvp->fid.vid);
+ *bp++ = htonl(dvp->fid.vnode);
+ *bp++ = htonl(dvp->fid.unique);
*bp++ = htonl(namesz);
- memcpy(bp, name, namesz);
+ memcpy(bp, name->name, namesz);
bp = (void *) bp + namesz;
if (padsz > 0) {
memset(bp, 0, padsz);
bp = (void *) bp + padsz;
}
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call1(call, &dvnode->fid, name);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -768,6 +768,9 @@ int afs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
*/
static int afs_deliver_fs_link(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
const __be32 *bp;
int ret;
@@ -779,13 +782,9 @@ static int afs_deliver_fs_link(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
- xdr_decode_AFSVolSync(&bp, call->out_volsync);
+ xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
+ xdr_decode_AFSVolSync(&bp, &op->volsync);
_leave(" = 0 [done]");
return 0;
@@ -804,56 +803,44 @@ static const struct afs_call_type afs_RXFSLink = {
/*
* make a hard link
*/
-int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
- const char *name,
- struct afs_status_cb *dvnode_scb,
- struct afs_status_cb *vnode_scb)
+void afs_fs_link(struct afs_operation *op)
{
- struct afs_vnode *dvnode = fc->vnode;
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
size_t namesz, reqsz, padsz;
__be32 *bp;
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
- return yfs_fs_link(fc, vnode, name, dvnode_scb, vnode_scb);
-
_enter("");
- namesz = strlen(name);
+ namesz = name->len;
padsz = (4 - (namesz & 3)) & 3;
reqsz = (5 * 4) + namesz + padsz + (3 * 4);
- call = afs_alloc_flat_call(net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4);
+ call = afs_alloc_flat_call(op->net, &afs_RXFSLink, reqsz, (21 + 21 + 6) * 4);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_dir_scb = dvnode_scb;
- call->out_scb = vnode_scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
*bp++ = htonl(FSLINK);
- *bp++ = htonl(dvnode->fid.vid);
- *bp++ = htonl(dvnode->fid.vnode);
- *bp++ = htonl(dvnode->fid.unique);
+ *bp++ = htonl(dvp->fid.vid);
+ *bp++ = htonl(dvp->fid.vnode);
+ *bp++ = htonl(dvp->fid.unique);
*bp++ = htonl(namesz);
- memcpy(bp, name, namesz);
+ memcpy(bp, name->name, namesz);
bp = (void *) bp + namesz;
if (padsz > 0) {
memset(bp, 0, padsz);
bp = (void *) bp + padsz;
}
- *bp++ = htonl(vnode->fid.vid);
- *bp++ = htonl(vnode->fid.vnode);
- *bp++ = htonl(vnode->fid.unique);
-
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call1(call, &vnode->fid, name);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ *bp++ = htonl(vp->fid.vid);
+ *bp++ = htonl(vp->fid.vnode);
+ *bp++ = htonl(vp->fid.unique);
+
+ trace_afs_make_fs_call1(call, &vp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -861,6 +848,9 @@ int afs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
*/
static int afs_deliver_fs_symlink(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
const __be32 *bp;
int ret;
@@ -872,14 +862,10 @@ static int afs_deliver_fs_symlink(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- xdr_decode_AFSFid(&bp, call->out_fid);
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
- xdr_decode_AFSVolSync(&bp, call->out_volsync);
+ xdr_decode_AFSFid(&bp, &vp->fid);
+ xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_AFSFetchStatus(&bp, call, &dvp->scb);
+ xdr_decode_AFSVolSync(&bp, &op->volsync);
_leave(" = 0 [done]");
return 0;
@@ -898,75 +884,58 @@ static const struct afs_call_type afs_RXFSSymlink = {
/*
* create a symbolic link
*/
-int afs_fs_symlink(struct afs_fs_cursor *fc,
- const char *name,
- const char *contents,
- struct afs_status_cb *dvnode_scb,
- struct afs_fid *newfid,
- struct afs_status_cb *new_scb)
+void afs_fs_symlink(struct afs_operation *op)
{
- struct afs_vnode *dvnode = fc->vnode;
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(dvnode);
size_t namesz, reqsz, padsz, c_namesz, c_padsz;
__be32 *bp;
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
- return yfs_fs_symlink(fc, name, contents, dvnode_scb,
- newfid, new_scb);
-
_enter("");
- namesz = strlen(name);
+ namesz = name->len;
padsz = (4 - (namesz & 3)) & 3;
- c_namesz = strlen(contents);
+ c_namesz = strlen(op->create.symlink);
c_padsz = (4 - (c_namesz & 3)) & 3;
reqsz = (6 * 4) + namesz + padsz + c_namesz + c_padsz + (6 * 4);
- call = afs_alloc_flat_call(net, &afs_RXFSSymlink, reqsz,
+ call = afs_alloc_flat_call(op->net, &afs_RXFSSymlink, reqsz,
(3 + 21 + 21 + 6) * 4);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_dir_scb = dvnode_scb;
- call->out_fid = newfid;
- call->out_scb = new_scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
*bp++ = htonl(FSSYMLINK);
- *bp++ = htonl(dvnode->fid.vid);
- *bp++ = htonl(dvnode->fid.vnode);
- *bp++ = htonl(dvnode->fid.unique);
+ *bp++ = htonl(dvp->fid.vid);
+ *bp++ = htonl(dvp->fid.vnode);
+ *bp++ = htonl(dvp->fid.unique);
*bp++ = htonl(namesz);
- memcpy(bp, name, namesz);
+ memcpy(bp, name->name, namesz);
bp = (void *) bp + namesz;
if (padsz > 0) {
memset(bp, 0, padsz);
bp = (void *) bp + padsz;
}
*bp++ = htonl(c_namesz);
- memcpy(bp, contents, c_namesz);
+ memcpy(bp, op->create.symlink, c_namesz);
bp = (void *) bp + c_namesz;
if (c_padsz > 0) {
memset(bp, 0, c_padsz);
bp = (void *) bp + c_padsz;
}
*bp++ = htonl(AFS_SET_MODE | AFS_SET_MTIME);
- *bp++ = htonl(dvnode->vfs_inode.i_mtime.tv_sec); /* mtime */
+ *bp++ = htonl(op->mtime.tv_sec); /* mtime */
*bp++ = 0; /* owner */
*bp++ = 0; /* group */
*bp++ = htonl(S_IRWXUGO); /* unix mode */
*bp++ = 0; /* segment size */
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call1(call, &dvnode->fid, name);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -974,6 +943,9 @@ int afs_fs_symlink(struct afs_fs_cursor *fc,
*/
static int afs_deliver_fs_rename(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *orig_dvp = &op->file[0];
+ struct afs_vnode_param *new_dvp = &op->file[1];
const __be32 *bp;
int ret;
@@ -981,17 +953,13 @@ static int afs_deliver_fs_rename(struct afs_call *call)
if (ret < 0)
return ret;
- /* unmarshall the reply once we've received all of it */
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
- if (call->out_dir_scb != call->out_scb) {
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- }
- xdr_decode_AFSVolSync(&bp, call->out_volsync);
+ /* If the two dirs are the same, we have two copies of the same status
+ * report, so we just decode it twice.
+ */
+ xdr_decode_AFSFetchStatus(&bp, call, &orig_dvp->scb);
+ xdr_decode_AFSFetchStatus(&bp, call, &new_dvp->scb);
+ xdr_decode_AFSVolSync(&bp, &op->volsync);
_leave(" = 0 [done]");
return 0;
@@ -1010,31 +978,22 @@ static const struct afs_call_type afs_RXFSRename = {
/*
* Rename/move a file or directory.
*/
-int afs_fs_rename(struct afs_fs_cursor *fc,
- const char *orig_name,
- struct afs_vnode *new_dvnode,
- const char *new_name,
- struct afs_status_cb *orig_dvnode_scb,
- struct afs_status_cb *new_dvnode_scb)
+void afs_fs_rename(struct afs_operation *op)
{
- struct afs_vnode *orig_dvnode = fc->vnode;
+ struct afs_vnode_param *orig_dvp = &op->file[0];
+ struct afs_vnode_param *new_dvp = &op->file[1];
+ const struct qstr *orig_name = &op->dentry->d_name;
+ const struct qstr *new_name = &op->dentry_2->d_name;
struct afs_call *call;
- struct afs_net *net = afs_v2net(orig_dvnode);
size_t reqsz, o_namesz, o_padsz, n_namesz, n_padsz;
__be32 *bp;
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
- return yfs_fs_rename(fc, orig_name,
- new_dvnode, new_name,
- orig_dvnode_scb,
- new_dvnode_scb);
-
_enter("");
- o_namesz = strlen(orig_name);
+ o_namesz = orig_name->len;
o_padsz = (4 - (o_namesz & 3)) & 3;
- n_namesz = strlen(new_name);
+ n_namesz = new_name->len;
n_padsz = (4 - (n_namesz & 3)) & 3;
reqsz = (4 * 4) +
@@ -1042,51 +1001,46 @@ int afs_fs_rename(struct afs_fs_cursor *fc,
(3 * 4) +
4 + n_namesz + n_padsz;
- call = afs_alloc_flat_call(net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4);
+ call = afs_alloc_flat_call(op->net, &afs_RXFSRename, reqsz, (21 + 21 + 6) * 4);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_dir_scb = orig_dvnode_scb;
- call->out_scb = new_dvnode_scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
*bp++ = htonl(FSRENAME);
- *bp++ = htonl(orig_dvnode->fid.vid);
- *bp++ = htonl(orig_dvnode->fid.vnode);
- *bp++ = htonl(orig_dvnode->fid.unique);
+ *bp++ = htonl(orig_dvp->fid.vid);
+ *bp++ = htonl(orig_dvp->fid.vnode);
+ *bp++ = htonl(orig_dvp->fid.unique);
*bp++ = htonl(o_namesz);
- memcpy(bp, orig_name, o_namesz);
+ memcpy(bp, orig_name->name, o_namesz);
bp = (void *) bp + o_namesz;
if (o_padsz > 0) {
memset(bp, 0, o_padsz);
bp = (void *) bp + o_padsz;
}
- *bp++ = htonl(new_dvnode->fid.vid);
- *bp++ = htonl(new_dvnode->fid.vnode);
- *bp++ = htonl(new_dvnode->fid.unique);
+ *bp++ = htonl(new_dvp->fid.vid);
+ *bp++ = htonl(new_dvp->fid.vnode);
+ *bp++ = htonl(new_dvp->fid.unique);
*bp++ = htonl(n_namesz);
- memcpy(bp, new_name, n_namesz);
+ memcpy(bp, new_name->name, n_namesz);
bp = (void *) bp + n_namesz;
if (n_padsz > 0) {
memset(bp, 0, n_padsz);
bp = (void *) bp + n_padsz;
}
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call2(call, &orig_dvnode->fid, orig_name, new_name);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call2(call, &orig_dvp->fid, orig_name, new_name);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
- * deliver reply data to an FS.StoreData
+ * Deliver reply data to FS.StoreData or FS.StoreStatus
*/
static int afs_deliver_fs_store_data(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *vp = &op->file[0];
const __be32 *bp;
int ret;
@@ -1098,10 +1052,8 @@ static int afs_deliver_fs_store_data(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- xdr_decode_AFSVolSync(&bp, call->out_volsync);
+ xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_AFSVolSync(&bp, &op->volsync);
_leave(" = 0 [done]");
return 0;
@@ -1127,90 +1079,69 @@ static const struct afs_call_type afs_RXFSStoreData64 = {
/*
* store a set of pages to a very large file
*/
-static int afs_fs_store_data64(struct afs_fs_cursor *fc,
- struct address_space *mapping,
- pgoff_t first, pgoff_t last,
- unsigned offset, unsigned to,
- loff_t size, loff_t pos, loff_t i_size,
- struct afs_status_cb *scb)
+static void afs_fs_store_data64(struct afs_operation *op,
+ loff_t pos, loff_t size, loff_t i_size)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
_enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- call = afs_alloc_flat_call(net, &afs_RXFSStoreData64,
+ call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData64,
(4 + 6 + 3 * 2) * 4,
(21 + 6) * 4);
if (!call)
- return -ENOMEM;
+ return afs_op_nomem(op);
- call->key = fc->key;
- call->mapping = mapping;
- call->first = first;
- call->last = last;
- call->first_offset = offset;
- call->last_to = to;
call->send_pages = true;
- call->out_scb = scb;
/* marshall the parameters */
bp = call->request;
*bp++ = htonl(FSSTOREDATA64);
- *bp++ = htonl(vnode->fid.vid);
- *bp++ = htonl(vnode->fid.vnode);
- *bp++ = htonl(vnode->fid.unique);
+ *bp++ = htonl(vp->fid.vid);
+ *bp++ = htonl(vp->fid.vnode);
+ *bp++ = htonl(vp->fid.unique);
*bp++ = htonl(AFS_SET_MTIME); /* mask */
- *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
+ *bp++ = htonl(op->mtime.tv_sec); /* mtime */
*bp++ = 0; /* owner */
*bp++ = 0; /* group */
*bp++ = 0; /* unix mode */
*bp++ = 0; /* segment size */
- *bp++ = htonl(pos >> 32);
- *bp++ = htonl((u32) pos);
- *bp++ = htonl(size >> 32);
- *bp++ = htonl((u32) size);
- *bp++ = htonl(i_size >> 32);
- *bp++ = htonl((u32) i_size);
-
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ *bp++ = htonl(upper_32_bits(pos));
+ *bp++ = htonl(lower_32_bits(pos));
+ *bp++ = htonl(upper_32_bits(size));
+ *bp++ = htonl(lower_32_bits(size));
+ *bp++ = htonl(upper_32_bits(i_size));
+ *bp++ = htonl(lower_32_bits(i_size));
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
* store a set of pages
*/
-int afs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
- pgoff_t first, pgoff_t last,
- unsigned offset, unsigned to,
- struct afs_status_cb *scb)
+void afs_fs_store_data(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
loff_t size, pos, i_size;
__be32 *bp;
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
- return yfs_fs_store_data(fc, mapping, first, last, offset, to, scb);
-
_enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- size = (loff_t)to - (loff_t)offset;
- if (first != last)
- size += (loff_t)(last - first) << PAGE_SHIFT;
- pos = (loff_t)first << PAGE_SHIFT;
- pos += offset;
+ size = (loff_t)op->store.last_to - (loff_t)op->store.first_offset;
+ if (op->store.first != op->store.last)
+ size += (loff_t)(op->store.last - op->store.first) << PAGE_SHIFT;
+ pos = (loff_t)op->store.first << PAGE_SHIFT;
+ pos += op->store.first_offset;
- i_size = i_size_read(&vnode->vfs_inode);
+ i_size = i_size_read(&vp->vnode->vfs_inode);
if (pos + size > i_size)
i_size = size + pos;
@@ -1218,73 +1149,38 @@ int afs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
(unsigned long long) size, (unsigned long long) pos,
(unsigned long long) i_size);
- if (pos >> 32 || i_size >> 32 || size >> 32 || (pos + size) >> 32)
- return afs_fs_store_data64(fc, mapping, first, last, offset, to,
- size, pos, i_size, scb);
+ if (upper_32_bits(pos) || upper_32_bits(i_size) || upper_32_bits(size) ||
+ upper_32_bits(pos + size))
+ return afs_fs_store_data64(op, pos, size, i_size);
- call = afs_alloc_flat_call(net, &afs_RXFSStoreData,
+ call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData,
(4 + 6 + 3) * 4,
(21 + 6) * 4);
if (!call)
- return -ENOMEM;
+ return afs_op_nomem(op);
- call->key = fc->key;
- call->mapping = mapping;
- call->first = first;
- call->last = last;
- call->first_offset = offset;
- call->last_to = to;
call->send_pages = true;
- call->out_scb = scb;
/* marshall the parameters */
bp = call->request;
*bp++ = htonl(FSSTOREDATA);
- *bp++ = htonl(vnode->fid.vid);
- *bp++ = htonl(vnode->fid.vnode);
- *bp++ = htonl(vnode->fid.unique);
+ *bp++ = htonl(vp->fid.vid);
+ *bp++ = htonl(vp->fid.vnode);
+ *bp++ = htonl(vp->fid.unique);
*bp++ = htonl(AFS_SET_MTIME); /* mask */
- *bp++ = htonl(vnode->vfs_inode.i_mtime.tv_sec); /* mtime */
+ *bp++ = htonl(op->mtime.tv_sec); /* mtime */
*bp++ = 0; /* owner */
*bp++ = 0; /* group */
*bp++ = 0; /* unix mode */
*bp++ = 0; /* segment size */
- *bp++ = htonl(pos);
- *bp++ = htonl(size);
- *bp++ = htonl(i_size);
-
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
-}
-
-/*
- * deliver reply data to an FS.StoreStatus
- */
-static int afs_deliver_fs_store_status(struct afs_call *call)
-{
- const __be32 *bp;
- int ret;
-
- _enter("");
-
- ret = afs_transfer_reply(call);
- if (ret < 0)
- return ret;
-
- /* unmarshall the reply once we've received all of it */
- bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- xdr_decode_AFSVolSync(&bp, call->out_volsync);
+ *bp++ = htonl(lower_32_bits(pos));
+ *bp++ = htonl(lower_32_bits(size));
+ *bp++ = htonl(lower_32_bits(i_size));
- _leave(" = 0 [done]");
- return 0;
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -1293,21 +1189,21 @@ static int afs_deliver_fs_store_status(struct afs_call *call)
static const struct afs_call_type afs_RXFSStoreStatus = {
.name = "FS.StoreStatus",
.op = afs_FS_StoreStatus,
- .deliver = afs_deliver_fs_store_status,
+ .deliver = afs_deliver_fs_store_data,
.destructor = afs_flat_call_destructor,
};
static const struct afs_call_type afs_RXFSStoreData_as_Status = {
.name = "FS.StoreData",
.op = afs_FS_StoreData,
- .deliver = afs_deliver_fs_store_status,
+ .deliver = afs_deliver_fs_store_data,
.destructor = afs_flat_call_destructor,
};
static const struct afs_call_type afs_RXFSStoreData64_as_Status = {
.name = "FS.StoreData64",
.op = afs_FS_StoreData64,
- .deliver = afs_deliver_fs_store_status,
+ .deliver = afs_deliver_fs_store_data,
.destructor = afs_flat_call_destructor,
};
@@ -1315,85 +1211,74 @@ static const struct afs_call_type afs_RXFSStoreData64_as_Status = {
* set the attributes on a very large file, using FS.StoreData rather than
* FS.StoreStatus so as to alter the file size also
*/
-static int afs_fs_setattr_size64(struct afs_fs_cursor *fc, struct iattr *attr,
- struct afs_status_cb *scb)
+static void afs_fs_setattr_size64(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
+ struct iattr *attr = op->setattr.attr;
__be32 *bp;
_enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
ASSERT(attr->ia_valid & ATTR_SIZE);
- call = afs_alloc_flat_call(net, &afs_RXFSStoreData64_as_Status,
+ call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData64_as_Status,
(4 + 6 + 3 * 2) * 4,
(21 + 6) * 4);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_scb = scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
*bp++ = htonl(FSSTOREDATA64);
- *bp++ = htonl(vnode->fid.vid);
- *bp++ = htonl(vnode->fid.vnode);
- *bp++ = htonl(vnode->fid.unique);
+ *bp++ = htonl(vp->fid.vid);
+ *bp++ = htonl(vp->fid.vnode);
+ *bp++ = htonl(vp->fid.unique);
xdr_encode_AFS_StoreStatus(&bp, attr);
- *bp++ = htonl(attr->ia_size >> 32); /* position of start of write */
- *bp++ = htonl((u32) attr->ia_size);
- *bp++ = 0; /* size of write */
+ *bp++ = htonl(upper_32_bits(attr->ia_size)); /* position of start of write */
+ *bp++ = htonl(lower_32_bits(attr->ia_size));
+ *bp++ = 0; /* size of write */
*bp++ = 0;
- *bp++ = htonl(attr->ia_size >> 32); /* new file length */
- *bp++ = htonl((u32) attr->ia_size);
-
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ *bp++ = htonl(upper_32_bits(attr->ia_size)); /* new file length */
+ *bp++ = htonl(lower_32_bits(attr->ia_size));
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
* set the attributes on a file, using FS.StoreData rather than FS.StoreStatus
* so as to alter the file size also
*/
-static int afs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr,
- struct afs_status_cb *scb)
+static void afs_fs_setattr_size(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
+ struct iattr *attr = op->setattr.attr;
__be32 *bp;
_enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
ASSERT(attr->ia_valid & ATTR_SIZE);
- if (attr->ia_size >> 32)
- return afs_fs_setattr_size64(fc, attr, scb);
+ if (upper_32_bits(attr->ia_size))
+ return afs_fs_setattr_size64(op);
- call = afs_alloc_flat_call(net, &afs_RXFSStoreData_as_Status,
+ call = afs_alloc_flat_call(op->net, &afs_RXFSStoreData_as_Status,
(4 + 6 + 3) * 4,
(21 + 6) * 4);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_scb = scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
*bp++ = htonl(FSSTOREDATA);
- *bp++ = htonl(vnode->fid.vid);
- *bp++ = htonl(vnode->fid.vnode);
- *bp++ = htonl(vnode->fid.unique);
+ *bp++ = htonl(vp->fid.vid);
+ *bp++ = htonl(vp->fid.vnode);
+ *bp++ = htonl(vp->fid.unique);
xdr_encode_AFS_StoreStatus(&bp, attr);
@@ -1401,57 +1286,44 @@ static int afs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr,
*bp++ = 0; /* size of write */
*bp++ = htonl(attr->ia_size); /* new file length */
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
* set the attributes on a file, using FS.StoreData if there's a change in file
* size, and FS.StoreStatus otherwise
*/
-int afs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr,
- struct afs_status_cb *scb)
+void afs_fs_setattr(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
+ struct iattr *attr = op->setattr.attr;
__be32 *bp;
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
- return yfs_fs_setattr(fc, attr, scb);
-
if (attr->ia_valid & ATTR_SIZE)
- return afs_fs_setattr_size(fc, attr, scb);
+ return afs_fs_setattr_size(op);
_enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- call = afs_alloc_flat_call(net, &afs_RXFSStoreStatus,
+ call = afs_alloc_flat_call(op->net, &afs_RXFSStoreStatus,
(4 + 6) * 4,
(21 + 6) * 4);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_scb = scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
*bp++ = htonl(FSSTORESTATUS);
- *bp++ = htonl(vnode->fid.vid);
- *bp++ = htonl(vnode->fid.vnode);
- *bp++ = htonl(vnode->fid.unique);
+ *bp++ = htonl(vp->fid.vid);
+ *bp++ = htonl(vp->fid.vnode);
+ *bp++ = htonl(vp->fid.unique);
- xdr_encode_AFS_StoreStatus(&bp, attr);
+ xdr_encode_AFS_StoreStatus(&bp, op->setattr.attr);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -1459,6 +1331,7 @@ int afs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr,
*/
static int afs_deliver_fs_get_volume_status(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
const __be32 *bp;
char *p;
u32 size;
@@ -1480,7 +1353,7 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call)
return ret;
bp = call->buffer;
- xdr_decode_AFSFetchVolumeStatus(&bp, call->out_volstatus);
+ xdr_decode_AFSFetchVolumeStatus(&bp, &op->volstatus.vs);
call->unmarshall++;
afs_extract_to_tmp(call);
/* Fall through */
@@ -1494,8 +1367,7 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("volname length: %u", call->count);
if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_volname_len);
+ return afs_protocol_error(call, afs_eproto_volname_len);
size = (call->count + 3) & ~3; /* It's padded */
afs_extract_to_buf(call, size);
call->unmarshall++;
@@ -1524,8 +1396,7 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("offline msg length: %u", call->count);
if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_offline_msg_len);
+ return afs_protocol_error(call, afs_eproto_offline_msg_len);
size = (call->count + 3) & ~3; /* It's padded */
afs_extract_to_buf(call, size);
call->unmarshall++;
@@ -1555,8 +1426,7 @@ static int afs_deliver_fs_get_volume_status(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("motd length: %u", call->count);
if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_motd_len);
+ return afs_protocol_error(call, afs_eproto_motd_len);
size = (call->count + 3) & ~3; /* It's padded */
afs_extract_to_buf(call, size);
call->unmarshall++;
@@ -1596,37 +1466,26 @@ static const struct afs_call_type afs_RXFSGetVolumeStatus = {
/*
* fetch the status of a volume
*/
-int afs_fs_get_volume_status(struct afs_fs_cursor *fc,
- struct afs_volume_status *vs)
+void afs_fs_get_volume_status(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
- return yfs_fs_get_volume_status(fc, vs);
-
_enter("");
- call = afs_alloc_flat_call(net, &afs_RXFSGetVolumeStatus, 2 * 4,
+ call = afs_alloc_flat_call(op->net, &afs_RXFSGetVolumeStatus, 2 * 4,
max(12 * 4, AFSOPAQUEMAX + 1));
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_volstatus = vs;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp[0] = htonl(FSGETVOLUMESTATUS);
- bp[1] = htonl(vnode->fid.vid);
+ bp[1] = htonl(vp->fid.vid);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -1634,6 +1493,7 @@ int afs_fs_get_volume_status(struct afs_fs_cursor *fc,
*/
static int afs_deliver_fs_xxxx_lock(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
const __be32 *bp;
int ret;
@@ -1645,7 +1505,7 @@ static int afs_deliver_fs_xxxx_lock(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- xdr_decode_AFSVolSync(&bp, call->out_volsync);
+ xdr_decode_AFSVolSync(&bp, &op->volsync);
_leave(" = 0 [done]");
return 0;
@@ -1686,114 +1546,80 @@ static const struct afs_call_type afs_RXFSReleaseLock = {
/*
* Set a lock on a file
*/
-int afs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type,
- struct afs_status_cb *scb)
+void afs_fs_set_lock(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
- return yfs_fs_set_lock(fc, type, scb);
-
_enter("");
- call = afs_alloc_flat_call(net, &afs_RXFSSetLock, 5 * 4, 6 * 4);
+ call = afs_alloc_flat_call(op->net, &afs_RXFSSetLock, 5 * 4, 6 * 4);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->lvnode = vnode;
- call->out_scb = scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
*bp++ = htonl(FSSETLOCK);
- *bp++ = htonl(vnode->fid.vid);
- *bp++ = htonl(vnode->fid.vnode);
- *bp++ = htonl(vnode->fid.unique);
- *bp++ = htonl(type);
-
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_calli(call, &vnode->fid, type);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ *bp++ = htonl(vp->fid.vid);
+ *bp++ = htonl(vp->fid.vnode);
+ *bp++ = htonl(vp->fid.unique);
+ *bp++ = htonl(op->lock.type);
+
+ trace_afs_make_fs_calli(call, &vp->fid, op->lock.type);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
* extend a lock on a file
*/
-int afs_fs_extend_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
+void afs_fs_extend_lock(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
- return yfs_fs_extend_lock(fc, scb);
-
_enter("");
- call = afs_alloc_flat_call(net, &afs_RXFSExtendLock, 4 * 4, 6 * 4);
+ call = afs_alloc_flat_call(op->net, &afs_RXFSExtendLock, 4 * 4, 6 * 4);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->lvnode = vnode;
- call->out_scb = scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
*bp++ = htonl(FSEXTENDLOCK);
- *bp++ = htonl(vnode->fid.vid);
- *bp++ = htonl(vnode->fid.vnode);
- *bp++ = htonl(vnode->fid.unique);
-
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ *bp++ = htonl(vp->fid.vid);
+ *bp++ = htonl(vp->fid.vnode);
+ *bp++ = htonl(vp->fid.unique);
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
* release a lock on a file
*/
-int afs_fs_release_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
+void afs_fs_release_lock(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
- return yfs_fs_release_lock(fc, scb);
-
_enter("");
- call = afs_alloc_flat_call(net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4);
+ call = afs_alloc_flat_call(op->net, &afs_RXFSReleaseLock, 4 * 4, 6 * 4);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->lvnode = vnode;
- call->out_scb = scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
*bp++ = htonl(FSRELEASELOCK);
- *bp++ = htonl(vnode->fid.vid);
- *bp++ = htonl(vnode->fid.vnode);
- *bp++ = htonl(vnode->fid.unique);
-
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ *bp++ = htonl(vp->fid.vid);
+ *bp++ = htonl(vp->fid.vnode);
+ *bp++ = htonl(vp->fid.unique);
+
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -1837,7 +1663,7 @@ int afs_fs_give_up_all_callbacks(struct afs_net *net,
bp = call->request;
*bp++ = htonl(FSGIVEUPALLCALLBACKS);
- /* Can't take a ref on server */
+ call->server = afs_use_server(server, afs_server_trace_give_up_cb);
afs_make_call(ac, call, GFP_NOFS);
return afs_wait_for_call_to_complete(call, ac);
}
@@ -1900,14 +1726,13 @@ static const struct afs_call_type afs_RXFSGetCapabilities = {
};
/*
- * Probe a fileserver for the capabilities that it supports. This can
- * return up to 196 words.
+ * Probe a fileserver for the capabilities that it supports. This RPC can
+ * reply with up to 196 words. The operation is asynchronous and if we managed
+ * to allocate a call, true is returned the result is delivered through the
+ * ->done() - otherwise we return false to indicate we didn't even try.
*/
-struct afs_call *afs_fs_get_capabilities(struct afs_net *net,
- struct afs_server *server,
- struct afs_addr_cursor *ac,
- struct key *key,
- unsigned int server_index)
+bool afs_fs_get_capabilities(struct afs_net *net, struct afs_server *server,
+ struct afs_addr_cursor *ac, struct key *key)
{
struct afs_call *call;
__be32 *bp;
@@ -1916,11 +1741,10 @@ struct afs_call *afs_fs_get_capabilities(struct afs_net *net,
call = afs_alloc_flat_call(net, &afs_RXFSGetCapabilities, 1 * 4, 16 * 4);
if (!call)
- return ERR_PTR(-ENOMEM);
+ return false;
call->key = key;
- call->server = afs_get_server(server, afs_server_trace_get_caps);
- call->server_index = server_index;
+ call->server = afs_use_server(server, afs_server_trace_get_caps);
call->upgrade = true;
call->async = true;
call->max_lifespan = AFS_PROBE_MAX_LIFESPAN;
@@ -1929,87 +1753,10 @@ struct afs_call *afs_fs_get_capabilities(struct afs_net *net,
bp = call->request;
*bp++ = htonl(FSGETCAPABILITIES);
- /* Can't take a ref on server */
trace_afs_make_fs_call(call, NULL);
afs_make_call(ac, call, GFP_NOFS);
- return call;
-}
-
-/*
- * Deliver reply data to an FS.FetchStatus with no vnode.
- */
-static int afs_deliver_fs_fetch_status(struct afs_call *call)
-{
- const __be32 *bp;
- int ret;
-
- ret = afs_transfer_reply(call);
- if (ret < 0)
- return ret;
-
- /* unmarshall the reply once we've received all of it */
- bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- xdr_decode_AFSCallBack(&bp, call, call->out_scb);
- xdr_decode_AFSVolSync(&bp, call->out_volsync);
-
- _leave(" = 0 [done]");
- return 0;
-}
-
-/*
- * FS.FetchStatus operation type
- */
-static const struct afs_call_type afs_RXFSFetchStatus = {
- .name = "FS.FetchStatus",
- .op = afs_FS_FetchStatus,
- .deliver = afs_deliver_fs_fetch_status,
- .destructor = afs_flat_call_destructor,
-};
-
-/*
- * Fetch the status information for a fid without needing a vnode handle.
- */
-int afs_fs_fetch_status(struct afs_fs_cursor *fc,
- struct afs_net *net,
- struct afs_fid *fid,
- struct afs_status_cb *scb,
- struct afs_volsync *volsync)
-{
- struct afs_call *call;
- __be32 *bp;
-
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
- return yfs_fs_fetch_status(fc, net, fid, scb, volsync);
-
- _enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), fid->vid, fid->vnode);
-
- call = afs_alloc_flat_call(net, &afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4);
- if (!call) {
- fc->ac.error = -ENOMEM;
- return -ENOMEM;
- }
-
- call->key = fc->key;
- call->out_fid = fid;
- call->out_scb = scb;
- call->out_volsync = volsync;
-
- /* marshall the parameters */
- bp = call->request;
- bp[0] = htonl(FSFETCHSTATUS);
- bp[1] = htonl(fid->vid);
- bp[2] = htonl(fid->vnode);
- bp[3] = htonl(fid->unique);
-
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ afs_put_call(call);
+ return true;
}
/*
@@ -2017,6 +1764,7 @@ int afs_fs_fetch_status(struct afs_fs_cursor *fc,
*/
static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
struct afs_status_cb *scb;
const __be32 *bp;
u32 tmp;
@@ -2038,10 +1786,9 @@ static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
return ret;
tmp = ntohl(call->tmp);
- _debug("status count: %u/%u", tmp, call->count2);
- if (tmp != call->count2)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_ibulkst_count);
+ _debug("status count: %u/%u", tmp, op->nr_files);
+ if (tmp != op->nr_files)
+ return afs_protocol_error(call, afs_eproto_ibulkst_count);
call->count = 0;
call->unmarshall++;
@@ -2055,14 +1802,23 @@ static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
if (ret < 0)
return ret;
+ switch (call->count) {
+ case 0:
+ scb = &op->file[0].scb;
+ break;
+ case 1:
+ scb = &op->file[1].scb;
+ break;
+ default:
+ scb = &op->more_files[call->count - 2].scb;
+ break;
+ }
+
bp = call->buffer;
- scb = &call->out_scb[call->count];
- ret = xdr_decode_AFSFetchStatus(&bp, call, scb);
- if (ret < 0)
- return ret;
+ xdr_decode_AFSFetchStatus(&bp, call, scb);
call->count++;
- if (call->count < call->count2)
+ if (call->count < op->nr_files)
goto more_counts;
call->count = 0;
@@ -2079,9 +1835,8 @@ static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
tmp = ntohl(call->tmp);
_debug("CB count: %u", tmp);
- if (tmp != call->count2)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_ibulkst_cb_count);
+ if (tmp != op->nr_files)
+ return afs_protocol_error(call, afs_eproto_ibulkst_cb_count);
call->count = 0;
call->unmarshall++;
more_cbs:
@@ -2095,11 +1850,22 @@ static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
return ret;
_debug("unmarshall CB array");
+ switch (call->count) {
+ case 0:
+ scb = &op->file[0].scb;
+ break;
+ case 1:
+ scb = &op->file[1].scb;
+ break;
+ default:
+ scb = &op->more_files[call->count - 2].scb;
+ break;
+ }
+
bp = call->buffer;
- scb = &call->out_scb[call->count];
xdr_decode_AFSCallBack(&bp, call, scb);
call->count++;
- if (call->count < call->count2)
+ if (call->count < op->nr_files)
goto more_cbs;
afs_extract_to_buf(call, 6 * sizeof(__be32));
@@ -2112,7 +1878,7 @@ static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
return ret;
bp = call->buffer;
- xdr_decode_AFSVolSync(&bp, call->out_volsync);
+ xdr_decode_AFSVolSync(&bp, &op->volsync);
call->unmarshall++;
@@ -2124,6 +1890,16 @@ static int afs_deliver_fs_inline_bulk_status(struct afs_call *call)
return 0;
}
+static void afs_done_fs_inline_bulk_status(struct afs_call *call)
+{
+ if (call->error == -ECONNABORTED &&
+ call->abort_code == RX_INVALID_OPERATION) {
+ set_bit(AFS_SERVER_FL_NO_IBULK, &call->server->flags);
+ if (call->op)
+ set_bit(AFS_VOLUME_MAYBE_NO_IBULK, &call->op->volume->flags);
+ }
+}
+
/*
* FS.InlineBulkStatus operation type
*/
@@ -2131,58 +1907,53 @@ static const struct afs_call_type afs_RXFSInlineBulkStatus = {
.name = "FS.InlineBulkStatus",
.op = afs_FS_InlineBulkStatus,
.deliver = afs_deliver_fs_inline_bulk_status,
+ .done = afs_done_fs_inline_bulk_status,
.destructor = afs_flat_call_destructor,
};
/*
* Fetch the status information for up to 50 files
*/
-int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
- struct afs_net *net,
- struct afs_fid *fids,
- struct afs_status_cb *statuses,
- unsigned int nr_fids,
- struct afs_volsync *volsync)
+void afs_fs_inline_bulk_status(struct afs_operation *op)
{
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
struct afs_call *call;
__be32 *bp;
int i;
- if (test_bit(AFS_SERVER_FL_IS_YFS, &fc->cbi->server->flags))
- return yfs_fs_inline_bulk_status(fc, net, fids, statuses,
- nr_fids, volsync);
+ if (test_bit(AFS_SERVER_FL_NO_IBULK, &op->server->flags)) {
+ op->error = -ENOTSUPP;
+ return;
+ }
_enter(",%x,{%llx:%llu},%u",
- key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode, op->nr_files);
- call = afs_alloc_flat_call(net, &afs_RXFSInlineBulkStatus,
- (2 + nr_fids * 3) * 4,
+ call = afs_alloc_flat_call(op->net, &afs_RXFSInlineBulkStatus,
+ (2 + op->nr_files * 3) * 4,
21 * 4);
- if (!call) {
- fc->ac.error = -ENOMEM;
- return -ENOMEM;
- }
-
- call->key = fc->key;
- call->out_scb = statuses;
- call->out_volsync = volsync;
- call->count2 = nr_fids;
+ if (!call)
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
*bp++ = htonl(FSINLINEBULKSTATUS);
- *bp++ = htonl(nr_fids);
- for (i = 0; i < nr_fids; i++) {
- *bp++ = htonl(fids[i].vid);
- *bp++ = htonl(fids[i].vnode);
- *bp++ = htonl(fids[i].unique);
+ *bp++ = htonl(op->nr_files);
+ *bp++ = htonl(dvp->fid.vid);
+ *bp++ = htonl(dvp->fid.vnode);
+ *bp++ = htonl(dvp->fid.unique);
+ *bp++ = htonl(vp->fid.vid);
+ *bp++ = htonl(vp->fid.vnode);
+ *bp++ = htonl(vp->fid.unique);
+ for (i = 0; i < op->nr_files - 2; i++) {
+ *bp++ = htonl(op->more_files[i].fid.vid);
+ *bp++ = htonl(op->more_files[i].fid.vnode);
+ *bp++ = htonl(op->more_files[i].fid.unique);
}
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &fids[0]);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -2190,6 +1961,8 @@ int afs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
*/
static int afs_deliver_fs_fetch_acl(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_acl *acl;
const __be32 *bp;
unsigned int size;
@@ -2215,7 +1988,7 @@ static int afs_deliver_fs_fetch_acl(struct afs_call *call)
acl = kmalloc(struct_size(acl, data, size), GFP_KERNEL);
if (!acl)
return -ENOMEM;
- call->ret_acl = acl;
+ op->acl = acl;
acl->size = call->count2;
afs_extract_begin(call, acl->data, size);
call->unmarshall++;
@@ -2238,10 +2011,8 @@ static int afs_deliver_fs_fetch_acl(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- xdr_decode_AFSVolSync(&bp, call->out_volsync);
+ xdr_decode_AFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_AFSVolSync(&bp, &op->volsync);
call->unmarshall++;
@@ -2253,12 +2024,6 @@ static int afs_deliver_fs_fetch_acl(struct afs_call *call)
return 0;
}
-static void afs_destroy_fs_fetch_acl(struct afs_call *call)
-{
- kfree(call->ret_acl);
- afs_flat_call_destructor(call);
-}
-
/*
* FS.FetchACL operation type
*/
@@ -2266,68 +2031,33 @@ static const struct afs_call_type afs_RXFSFetchACL = {
.name = "FS.FetchACL",
.op = afs_FS_FetchACL,
.deliver = afs_deliver_fs_fetch_acl,
- .destructor = afs_destroy_fs_fetch_acl,
};
/*
* Fetch the ACL for a file.
*/
-struct afs_acl *afs_fs_fetch_acl(struct afs_fs_cursor *fc,
- struct afs_status_cb *scb)
+void afs_fs_fetch_acl(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
_enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- call = afs_alloc_flat_call(net, &afs_RXFSFetchACL, 16, (21 + 6) * 4);
- if (!call) {
- fc->ac.error = -ENOMEM;
- return ERR_PTR(-ENOMEM);
- }
-
- call->key = fc->key;
- call->ret_acl = NULL;
- call->out_scb = scb;
- call->out_volsync = NULL;
+ call = afs_alloc_flat_call(op->net, &afs_RXFSFetchACL, 16, (21 + 6) * 4);
+ if (!call)
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp[0] = htonl(FSFETCHACL);
- bp[1] = htonl(vnode->fid.vid);
- bp[2] = htonl(vnode->fid.vnode);
- bp[3] = htonl(vnode->fid.unique);
-
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_make_call(&fc->ac, call, GFP_KERNEL);
- return (struct afs_acl *)afs_wait_for_call_to_complete(call, &fc->ac);
-}
-
-/*
- * Deliver reply data to any operation that returns file status and volume
- * sync.
- */
-static int afs_deliver_fs_file_status_and_vol(struct afs_call *call)
-{
- const __be32 *bp;
- int ret;
+ bp[1] = htonl(vp->fid.vid);
+ bp[2] = htonl(vp->fid.vnode);
+ bp[3] = htonl(vp->fid.unique);
- ret = afs_transfer_reply(call);
- if (ret < 0)
- return ret;
-
- bp = call->buffer;
- ret = xdr_decode_AFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- xdr_decode_AFSVolSync(&bp, call->out_volsync);
-
- _leave(" = 0 [done]");
- return 0;
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_KERNEL);
}
/*
@@ -2343,42 +2073,34 @@ static const struct afs_call_type afs_RXFSStoreACL = {
/*
* Fetch the ACL for a file.
*/
-int afs_fs_store_acl(struct afs_fs_cursor *fc, const struct afs_acl *acl,
- struct afs_status_cb *scb)
+void afs_fs_store_acl(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
+ const struct afs_acl *acl = op->acl;
size_t size;
__be32 *bp;
_enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
size = round_up(acl->size, 4);
- call = afs_alloc_flat_call(net, &afs_RXFSStoreACL,
+ call = afs_alloc_flat_call(op->net, &afs_RXFSStoreACL,
5 * 4 + size, (21 + 6) * 4);
- if (!call) {
- fc->ac.error = -ENOMEM;
- return -ENOMEM;
- }
-
- call->key = fc->key;
- call->out_scb = scb;
- call->out_volsync = NULL;
+ if (!call)
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp[0] = htonl(FSSTOREACL);
- bp[1] = htonl(vnode->fid.vid);
- bp[2] = htonl(vnode->fid.vnode);
- bp[3] = htonl(vnode->fid.unique);
+ bp[1] = htonl(vp->fid.vid);
+ bp[2] = htonl(vp->fid.vnode);
+ bp[3] = htonl(vp->fid.unique);
bp[4] = htonl(acl->size);
memcpy(&bp[5], acl->data, acl->size);
if (acl->size != size)
memset((void *)&bp[5] + acl->size, 0, size - acl->size);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_make_call(&fc->ac, call, GFP_KERNEL);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_KERNEL);
}
diff --git a/fs/afs/inode.c b/fs/afs/inode.c
index 281470fe1183..1d13d2e882ad 100644
--- a/fs/afs/inode.c
+++ b/fs/afs/inode.c
@@ -67,16 +67,18 @@ static void afs_set_i_size(struct afs_vnode *vnode, u64 size)
/*
* Initialise an inode from the vnode status.
*/
-static int afs_inode_init_from_status(struct afs_vnode *vnode, struct key *key,
- struct afs_cb_interest *cbi,
- struct afs_vnode *parent_vnode,
- struct afs_status_cb *scb)
+static int afs_inode_init_from_status(struct afs_operation *op,
+ struct afs_vnode_param *vp,
+ struct afs_vnode *vnode)
{
- struct afs_cb_interest *old_cbi = NULL;
- struct afs_file_status *status = &scb->status;
+ struct afs_file_status *status = &vp->scb.status;
struct inode *inode = AFS_VNODE_TO_I(vnode);
struct timespec64 t;
+ _enter("{%llx:%llu.%u} %s",
+ vp->fid.vid, vp->fid.vnode, vp->fid.unique,
+ op->type ? op->type->name : "???");
+
_debug("FS: ft=%d lk=%d sz=%llu ver=%Lu mod=%hu",
status->type,
status->nlink,
@@ -86,12 +88,15 @@ static int afs_inode_init_from_status(struct afs_vnode *vnode, struct key *key,
write_seqlock(&vnode->cb_lock);
+ vnode->cb_v_break = op->cb_v_break;
+ vnode->cb_s_break = op->cb_s_break;
vnode->status = *status;
t = status->mtime_client;
inode->i_ctime = t;
inode->i_mtime = t;
inode->i_atime = t;
+ inode->i_flags |= S_NOATIME;
inode->i_uid = make_kuid(&init_user_ns, status->owner);
inode->i_gid = make_kgid(&init_user_ns, status->group);
set_nlink(&vnode->vfs_inode, status->nlink);
@@ -128,9 +133,9 @@ static int afs_inode_init_from_status(struct afs_vnode *vnode, struct key *key,
inode_nohighmem(inode);
break;
default:
- dump_vnode(vnode, parent_vnode);
+ dump_vnode(vnode, op->file[0].vnode != vnode ? op->file[0].vnode : NULL);
write_sequnlock(&vnode->cb_lock);
- return afs_protocol_error(NULL, -EBADMSG, afs_eproto_file_type);
+ return afs_protocol_error(NULL, afs_eproto_file_type);
}
afs_set_i_size(vnode, status->size);
@@ -138,38 +143,37 @@ static int afs_inode_init_from_status(struct afs_vnode *vnode, struct key *key,
vnode->invalid_before = status->data_version;
inode_set_iversion_raw(&vnode->vfs_inode, status->data_version);
- if (!scb->have_cb) {
+ if (!vp->scb.have_cb) {
/* it's a symlink we just created (the fileserver
* didn't give us a callback) */
vnode->cb_expires_at = ktime_get_real_seconds();
} else {
- vnode->cb_expires_at = scb->callback.expires_at;
- old_cbi = rcu_dereference_protected(vnode->cb_interest,
- lockdep_is_held(&vnode->cb_lock.lock));
- if (cbi != old_cbi)
- rcu_assign_pointer(vnode->cb_interest, afs_get_cb_interest(cbi));
- else
- old_cbi = NULL;
+ vnode->cb_expires_at = vp->scb.callback.expires_at;
+ vnode->cb_server = op->server;
set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
}
write_sequnlock(&vnode->cb_lock);
- afs_put_cb_interest(afs_v2net(vnode), old_cbi);
return 0;
}
/*
* Update the core inode struct from a returned status record.
*/
-static void afs_apply_status(struct afs_fs_cursor *fc,
- struct afs_vnode *vnode,
- struct afs_status_cb *scb,
- const afs_dataversion_t *expected_version)
+static void afs_apply_status(struct afs_operation *op,
+ struct afs_vnode_param *vp)
{
- struct afs_file_status *status = &scb->status;
+ struct afs_file_status *status = &vp->scb.status;
+ struct afs_vnode *vnode = vp->vnode;
+ struct inode *inode = &vnode->vfs_inode;
struct timespec64 t;
umode_t mode;
bool data_changed = false;
+ bool change_size = vp->set_size;
+
+ _enter("{%llx:%llu.%u} %s",
+ vp->fid.vid, vp->fid.vnode, vp->fid.unique,
+ op->type ? op->type->name : "???");
BUG_ON(test_bit(AFS_VNODE_UNSET, &vnode->flags));
@@ -179,44 +183,43 @@ static void afs_apply_status(struct afs_fs_cursor *fc,
vnode->fid.vnode,
vnode->fid.unique,
status->type, vnode->status.type);
- afs_protocol_error(NULL, -EBADMSG, afs_eproto_bad_status);
+ afs_protocol_error(NULL, afs_eproto_bad_status);
return;
}
if (status->nlink != vnode->status.nlink)
- set_nlink(&vnode->vfs_inode, status->nlink);
+ set_nlink(inode, status->nlink);
if (status->owner != vnode->status.owner)
- vnode->vfs_inode.i_uid = make_kuid(&init_user_ns, status->owner);
+ inode->i_uid = make_kuid(&init_user_ns, status->owner);
if (status->group != vnode->status.group)
- vnode->vfs_inode.i_gid = make_kgid(&init_user_ns, status->group);
+ inode->i_gid = make_kgid(&init_user_ns, status->group);
if (status->mode != vnode->status.mode) {
- mode = vnode->vfs_inode.i_mode;
+ mode = inode->i_mode;
mode &= ~S_IALLUGO;
mode |= status->mode;
- WRITE_ONCE(vnode->vfs_inode.i_mode, mode);
+ WRITE_ONCE(inode->i_mode, mode);
}
t = status->mtime_client;
- vnode->vfs_inode.i_ctime = t;
- vnode->vfs_inode.i_mtime = t;
- vnode->vfs_inode.i_atime = t;
+ inode->i_mtime = t;
+ if (vp->update_ctime)
+ inode->i_ctime = op->ctime;
if (vnode->status.data_version != status->data_version)
data_changed = true;
vnode->status = *status;
- if (expected_version &&
- *expected_version != status->data_version) {
+ if (vp->dv_before + vp->dv_delta != status->data_version) {
if (test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags))
pr_warn("kAFS: vnode modified {%llx:%llu} %llx->%llx %s\n",
vnode->fid.vid, vnode->fid.vnode,
- (unsigned long long)*expected_version,
+ (unsigned long long)vp->dv_before + vp->dv_delta,
(unsigned long long)status->data_version,
- fc->type ? fc->type->name : "???");
+ op->type ? op->type->name : "???");
vnode->invalid_before = status->data_version;
if (vnode->status.type == AFS_FTYPE_DIR) {
@@ -225,6 +228,7 @@ static void afs_apply_status(struct afs_fs_cursor *fc,
} else {
set_bit(AFS_VNODE_ZAP_DATA, &vnode->flags);
}
+ change_size = true;
} else if (vnode->status.type == AFS_FTYPE_DIR) {
/* Expected directory change is handled elsewhere so
* that we can locally edit the directory and save on a
@@ -232,33 +236,37 @@ static void afs_apply_status(struct afs_fs_cursor *fc,
*/
if (test_bit(AFS_VNODE_DIR_VALID, &vnode->flags))
data_changed = false;
+ change_size = true;
}
if (data_changed) {
- inode_set_iversion_raw(&vnode->vfs_inode, status->data_version);
- afs_set_i_size(vnode, status->size);
+ inode_set_iversion_raw(inode, status->data_version);
+
+ /* Only update the size if the data version jumped. If the
+ * file is being modified locally, then we might have our own
+ * idea of what the size should be that's not the same as
+ * what's on the server.
+ */
+ if (change_size) {
+ afs_set_i_size(vnode, status->size);
+ inode->i_ctime = t;
+ inode->i_atime = t;
+ }
}
}
/*
* Apply a callback to a vnode.
*/
-static void afs_apply_callback(struct afs_fs_cursor *fc,
- struct afs_vnode *vnode,
- struct afs_status_cb *scb,
- unsigned int cb_break)
+static void afs_apply_callback(struct afs_operation *op,
+ struct afs_vnode_param *vp)
{
- struct afs_cb_interest *old;
- struct afs_callback *cb = &scb->callback;
+ struct afs_callback *cb = &vp->scb.callback;
+ struct afs_vnode *vnode = vp->vnode;
- if (!afs_cb_is_broken(cb_break, vnode, fc->cbi)) {
+ if (!afs_cb_is_broken(vp->cb_break_before, vnode)) {
vnode->cb_expires_at = cb->expires_at;
- old = rcu_dereference_protected(vnode->cb_interest,
- lockdep_is_held(&vnode->cb_lock.lock));
- if (old != fc->cbi) {
- rcu_assign_pointer(vnode->cb_interest, afs_get_cb_interest(fc->cbi));
- afs_put_cb_interest(afs_v2net(vnode), old);
- }
+ vnode->cb_server = op->server;
set_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
}
}
@@ -267,106 +275,116 @@ static void afs_apply_callback(struct afs_fs_cursor *fc,
* Apply the received status and callback to an inode all in the same critical
* section to avoid races with afs_validate().
*/
-void afs_vnode_commit_status(struct afs_fs_cursor *fc,
- struct afs_vnode *vnode,
- unsigned int cb_break,
- const afs_dataversion_t *expected_version,
- struct afs_status_cb *scb)
+void afs_vnode_commit_status(struct afs_operation *op, struct afs_vnode_param *vp)
{
- if (fc->ac.error != 0)
- return;
+ struct afs_vnode *vnode = vp->vnode;
+
+ _enter("");
write_seqlock(&vnode->cb_lock);
- if (scb->have_error) {
- if (scb->status.abort_code == VNOVNODE) {
+ if (vp->scb.have_error) {
+ /* A YFS server will return this from RemoveFile2 and AFS and
+ * YFS will return this from InlineBulkStatus.
+ */
+ if (vp->scb.status.abort_code == VNOVNODE) {
set_bit(AFS_VNODE_DELETED, &vnode->flags);
clear_nlink(&vnode->vfs_inode);
__afs_break_callback(vnode, afs_cb_break_for_deleted);
+ op->flags &= ~AFS_OPERATION_DIR_CONFLICT;
+ }
+ } else if (vp->scb.have_status) {
+ afs_apply_status(op, vp);
+ if (vp->scb.have_cb)
+ afs_apply_callback(op, vp);
+ } else if (vp->op_unlinked && !(op->flags & AFS_OPERATION_DIR_CONFLICT)) {
+ drop_nlink(&vnode->vfs_inode);
+ if (vnode->vfs_inode.i_nlink == 0) {
+ set_bit(AFS_VNODE_DELETED, &vnode->flags);
+ __afs_break_callback(vnode, afs_cb_break_for_deleted);
}
- } else {
- if (scb->have_status)
- afs_apply_status(fc, vnode, scb, expected_version);
- if (scb->have_cb)
- afs_apply_callback(fc, vnode, scb, cb_break);
}
write_sequnlock(&vnode->cb_lock);
- if (fc->ac.error == 0 && scb->have_status)
- afs_cache_permit(vnode, fc->key, cb_break, scb);
+ if (vp->scb.have_status)
+ afs_cache_permit(vnode, op->key, vp->cb_break_before, &vp->scb);
+}
+
+static void afs_fetch_status_success(struct afs_operation *op)
+{
+ struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
+ struct afs_vnode *vnode = vp->vnode;
+ int ret;
+
+ if (vnode->vfs_inode.i_state & I_NEW) {
+ ret = afs_inode_init_from_status(op, vp, vnode);
+ op->error = ret;
+ if (ret == 0)
+ afs_cache_permit(vnode, op->key, vp->cb_break_before, &vp->scb);
+ } else {
+ afs_vnode_commit_status(op, vp);
+ }
}
+const struct afs_operation_ops afs_fetch_status_operation = {
+ .issue_afs_rpc = afs_fs_fetch_status,
+ .issue_yfs_rpc = yfs_fs_fetch_status,
+ .success = afs_fetch_status_success,
+ .aborted = afs_check_for_remote_deletion,
+};
+
/*
* Fetch file status from the volume.
*/
int afs_fetch_status(struct afs_vnode *vnode, struct key *key, bool is_new,
afs_access_t *_caller_access)
{
- struct afs_status_cb *scb;
- struct afs_fs_cursor fc;
- int ret;
+ struct afs_operation *op;
_enter("%s,{%llx:%llu.%u,S=%lx}",
vnode->volume->name,
vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique,
vnode->flags);
- scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
- return -ENOMEM;
+ op = afs_alloc_operation(key, vnode->volume);
+ if (IS_ERR(op))
+ return PTR_ERR(op);
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, key, true)) {
- afs_dataversion_t data_version = vnode->status.data_version;
+ afs_op_set_vnode(op, 0, vnode);
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(vnode);
- afs_fs_fetch_file_status(&fc, scb, NULL);
- }
-
- if (fc.error) {
- /* Do nothing. */
- } else if (is_new) {
- ret = afs_inode_init_from_status(vnode, key, fc.cbi,
- NULL, scb);
- fc.error = ret;
- if (ret == 0)
- afs_cache_permit(vnode, key, fc.cb_break, scb);
- } else {
- afs_vnode_commit_status(&fc, vnode, fc.cb_break,
- &data_version, scb);
- }
- afs_check_for_remote_deletion(&fc, vnode);
- ret = afs_end_vnode_operation(&fc);
- }
+ op->nr_files = 1;
+ op->ops = &afs_fetch_status_operation;
+ afs_begin_vnode_operation(op);
+ afs_wait_for_operation(op);
- if (ret == 0 && _caller_access)
- *_caller_access = scb->status.caller_access;
- kfree(scb);
- _leave(" = %d", ret);
- return ret;
+ if (_caller_access)
+ *_caller_access = op->file[0].scb.status.caller_access;
+ return afs_put_operation(op);
}
/*
- * iget5() comparator
+ * ilookup() comparator
*/
-int afs_iget5_test(struct inode *inode, void *opaque)
+int afs_ilookup5_test_by_fid(struct inode *inode, void *opaque)
{
- struct afs_iget_data *iget_data = opaque;
struct afs_vnode *vnode = AFS_FS_I(inode);
+ struct afs_fid *fid = opaque;
- return memcmp(&vnode->fid, &iget_data->fid, sizeof(iget_data->fid)) == 0;
+ return (fid->vnode == vnode->fid.vnode &&
+ fid->vnode_hi == vnode->fid.vnode_hi &&
+ fid->unique == vnode->fid.unique);
}
/*
- * iget5() comparator for inode created by autocell operations
- *
- * These pseudo inodes don't match anything.
+ * iget5() comparator
*/
-static int afs_iget5_pseudo_dir_test(struct inode *inode, void *opaque)
+static int afs_iget5_test(struct inode *inode, void *opaque)
{
- return 0;
+ struct afs_vnode_param *vp = opaque;
+ //struct afs_vnode *vnode = AFS_FS_I(inode);
+
+ return afs_ilookup5_test_by_fid(inode, &vp->fid);
}
/*
@@ -374,99 +392,22 @@ static int afs_iget5_pseudo_dir_test(struct inode *inode, void *opaque)
*/
static int afs_iget5_set(struct inode *inode, void *opaque)
{
- struct afs_iget_data *iget_data = opaque;
+ struct afs_vnode_param *vp = opaque;
+ struct afs_super_info *as = AFS_FS_S(inode->i_sb);
struct afs_vnode *vnode = AFS_FS_I(inode);
- vnode->fid = iget_data->fid;
- vnode->volume = iget_data->volume;
- vnode->cb_v_break = iget_data->cb_v_break;
- vnode->cb_s_break = iget_data->cb_s_break;
+ vnode->volume = as->volume;
+ vnode->fid = vp->fid;
/* YFS supports 96-bit vnode IDs, but Linux only supports
* 64-bit inode numbers.
*/
- inode->i_ino = iget_data->fid.vnode;
- inode->i_generation = iget_data->fid.unique;
+ inode->i_ino = vnode->fid.vnode;
+ inode->i_generation = vnode->fid.unique;
return 0;
}
/*
- * Create an inode for a dynamic root directory or an autocell dynamic
- * automount dir.
- */
-struct inode *afs_iget_pseudo_dir(struct super_block *sb, bool root)
-{
- struct afs_super_info *as;
- struct afs_vnode *vnode;
- struct inode *inode;
- static atomic_t afs_autocell_ino;
-
- struct afs_iget_data iget_data = {
- .cb_v_break = 0,
- .cb_s_break = 0,
- };
-
- _enter("");
-
- as = sb->s_fs_info;
- if (as->volume) {
- iget_data.volume = as->volume;
- iget_data.fid.vid = as->volume->vid;
- }
- if (root) {
- iget_data.fid.vnode = 1;
- iget_data.fid.unique = 1;
- } else {
- iget_data.fid.vnode = atomic_inc_return(&afs_autocell_ino);
- iget_data.fid.unique = 0;
- }
-
- inode = iget5_locked(sb, iget_data.fid.vnode,
- afs_iget5_pseudo_dir_test, afs_iget5_set,
- &iget_data);
- if (!inode) {
- _leave(" = -ENOMEM");
- return ERR_PTR(-ENOMEM);
- }
-
- _debug("GOT INODE %p { ino=%lu, vl=%llx, vn=%llx, u=%x }",
- inode, inode->i_ino, iget_data.fid.vid, iget_data.fid.vnode,
- iget_data.fid.unique);
-
- vnode = AFS_FS_I(inode);
-
- /* there shouldn't be an existing inode */
- BUG_ON(!(inode->i_state & I_NEW));
-
- inode->i_size = 0;
- inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO;
- if (root) {
- inode->i_op = &afs_dynroot_inode_operations;
- inode->i_fop = &simple_dir_operations;
- } else {
- inode->i_op = &afs_autocell_inode_operations;
- }
- set_nlink(inode, 2);
- inode->i_uid = GLOBAL_ROOT_UID;
- inode->i_gid = GLOBAL_ROOT_GID;
- inode->i_ctime = inode->i_atime = inode->i_mtime = current_time(inode);
- inode->i_blocks = 0;
- inode_set_iversion_raw(inode, 0);
- inode->i_generation = 0;
-
- set_bit(AFS_VNODE_PSEUDODIR, &vnode->flags);
- if (!root) {
- set_bit(AFS_VNODE_MOUNTPOINT, &vnode->flags);
- inode->i_flags |= S_AUTOMOUNT;
- }
-
- inode->i_flags |= S_NOATIME;
- unlock_new_inode(inode);
- _leave(" = %p", inode);
- return inode;
-}
-
-/*
* Get a cache cookie for an inode.
*/
static void afs_get_inode_cache(struct afs_vnode *vnode)
@@ -501,58 +442,41 @@ static void afs_get_inode_cache(struct afs_vnode *vnode)
/*
* inode retrieval
*/
-struct inode *afs_iget(struct super_block *sb, struct key *key,
- struct afs_iget_data *iget_data,
- struct afs_status_cb *scb,
- struct afs_cb_interest *cbi,
- struct afs_vnode *parent_vnode)
+struct inode *afs_iget(struct afs_operation *op, struct afs_vnode_param *vp)
{
- struct afs_super_info *as;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct super_block *sb = dvp->vnode->vfs_inode.i_sb;
struct afs_vnode *vnode;
- struct afs_fid *fid = &iget_data->fid;
struct inode *inode;
int ret;
- _enter(",{%llx:%llu.%u},,", fid->vid, fid->vnode, fid->unique);
-
- as = sb->s_fs_info;
- iget_data->volume = as->volume;
+ _enter(",{%llx:%llu.%u},,", vp->fid.vid, vp->fid.vnode, vp->fid.unique);
- inode = iget5_locked(sb, fid->vnode, afs_iget5_test, afs_iget5_set,
- iget_data);
+ inode = iget5_locked(sb, vp->fid.vnode, afs_iget5_test, afs_iget5_set, vp);
if (!inode) {
_leave(" = -ENOMEM");
return ERR_PTR(-ENOMEM);
}
- _debug("GOT INODE %p { vl=%llx vn=%llx, u=%x }",
- inode, fid->vid, fid->vnode, fid->unique);
-
vnode = AFS_FS_I(inode);
+ _debug("GOT INODE %p { vl=%llx vn=%llx, u=%x }",
+ inode, vnode->fid.vid, vnode->fid.vnode, vnode->fid.unique);
+
/* deal with an existing inode */
if (!(inode->i_state & I_NEW)) {
_leave(" = %p", inode);
return inode;
}
- if (!scb) {
- /* it's a remotely extant inode */
- ret = afs_fetch_status(vnode, key, true, NULL);
- if (ret < 0)
- goto bad_inode;
- } else {
- ret = afs_inode_init_from_status(vnode, key, cbi, parent_vnode,
- scb);
- if (ret < 0)
- goto bad_inode;
- }
+ ret = afs_inode_init_from_status(op, vp, vnode);
+ if (ret < 0)
+ goto bad_inode;
afs_get_inode_cache(vnode);
/* success */
clear_bit(AFS_VNODE_UNSET, &vnode->flags);
- inode->i_flags |= S_NOATIME;
unlock_new_inode(inode);
_leave(" = %p", inode);
return inode;
@@ -564,11 +488,79 @@ bad_inode:
return ERR_PTR(ret);
}
+static int afs_iget5_set_root(struct inode *inode, void *opaque)
+{
+ struct afs_super_info *as = AFS_FS_S(inode->i_sb);
+ struct afs_vnode *vnode = AFS_FS_I(inode);
+
+ vnode->volume = as->volume;
+ vnode->fid.vid = as->volume->vid,
+ vnode->fid.vnode = 1;
+ vnode->fid.unique = 1;
+ inode->i_ino = 1;
+ inode->i_generation = 1;
+ return 0;
+}
+
+/*
+ * Set up the root inode for a volume. This is always vnode 1, unique 1 within
+ * the volume.
+ */
+struct inode *afs_root_iget(struct super_block *sb, struct key *key)
+{
+ struct afs_super_info *as = AFS_FS_S(sb);
+ struct afs_operation *op;
+ struct afs_vnode *vnode;
+ struct inode *inode;
+ int ret;
+
+ _enter(",{%llx},,", as->volume->vid);
+
+ inode = iget5_locked(sb, 1, NULL, afs_iget5_set_root, NULL);
+ if (!inode) {
+ _leave(" = -ENOMEM");
+ return ERR_PTR(-ENOMEM);
+ }
+
+ _debug("GOT ROOT INODE %p { vl=%llx }", inode, as->volume->vid);
+
+ BUG_ON(!(inode->i_state & I_NEW));
+
+ vnode = AFS_FS_I(inode);
+ vnode->cb_v_break = as->volume->cb_v_break,
+
+ op = afs_alloc_operation(key, as->volume);
+ if (IS_ERR(op)) {
+ ret = PTR_ERR(op);
+ goto error;
+ }
+
+ afs_op_set_vnode(op, 0, vnode);
+
+ op->nr_files = 1;
+ op->ops = &afs_fetch_status_operation;
+ ret = afs_do_sync_operation(op);
+ if (ret < 0)
+ goto error;
+
+ afs_get_inode_cache(vnode);
+
+ clear_bit(AFS_VNODE_UNSET, &vnode->flags);
+ unlock_new_inode(inode);
+ _leave(" = %p", inode);
+ return inode;
+
+error:
+ iget_failed(inode);
+ _leave(" = %d [bad]", ret);
+ return ERR_PTR(ret);
+}
+
/*
* mark the data attached to an inode as obsolete due to a write on the server
* - might also want to ditch all the outstanding writes and dirty pages
*/
-void afs_zap_data(struct afs_vnode *vnode)
+static void afs_zap_data(struct afs_vnode *vnode)
{
_enter("{%llx:%llu}", vnode->fid.vid, vnode->fid.vnode);
@@ -586,12 +578,30 @@ void afs_zap_data(struct afs_vnode *vnode)
}
/*
+ * Get the server reinit counter for a vnode's current server.
+ */
+static bool afs_get_s_break_rcu(struct afs_vnode *vnode, unsigned int *_s_break)
+{
+ struct afs_server_list *slist = rcu_dereference(vnode->volume->servers);
+ struct afs_server *server;
+ int i;
+
+ for (i = 0; i < slist->nr_servers; i++) {
+ server = slist->servers[i].server;
+ if (server == vnode->cb_server) {
+ *_s_break = READ_ONCE(server->cb_s_break);
+ return true;
+ }
+ }
+
+ return false;
+}
+
+/*
* Check the validity of a vnode/inode.
*/
bool afs_check_validity(struct afs_vnode *vnode)
{
- struct afs_cb_interest *cbi;
- struct afs_server *server;
struct afs_volume *volume = vnode->volume;
enum afs_cb_break_reason need_clear = afs_cb_break_no_break;
time64_t now = ktime_get_real_seconds();
@@ -604,11 +614,8 @@ bool afs_check_validity(struct afs_vnode *vnode)
cb_v_break = READ_ONCE(volume->cb_v_break);
cb_break = vnode->cb_break;
- if (test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags)) {
- cbi = rcu_dereference(vnode->cb_interest);
- server = rcu_dereference(cbi->server);
- cb_s_break = READ_ONCE(server->cb_s_break);
-
+ if (test_bit(AFS_VNODE_CB_PROMISED, &vnode->flags) &&
+ afs_get_s_break_rcu(vnode, &cb_s_break)) {
if (vnode->cb_s_break != cb_s_break ||
vnode->cb_v_break != cb_v_break) {
vnode->cb_s_break = cb_s_break;
@@ -731,6 +738,9 @@ int afs_getattr(const struct path *path, struct kstat *stat,
do {
read_seqbegin_or_lock(&vnode->cb_lock, &seq);
generic_fillattr(inode, stat);
+ if (test_bit(AFS_VNODE_SILLY_DELETED, &vnode->flags) &&
+ stat->nlink > 0)
+ stat->nlink -= 1;
} while (need_seqretry(&vnode->cb_lock, seq));
done_seqretry(&vnode->cb_lock, seq);
@@ -755,7 +765,6 @@ int afs_drop_inode(struct inode *inode)
*/
void afs_evict_inode(struct inode *inode)
{
- struct afs_cb_interest *cbi;
struct afs_vnode *vnode;
vnode = AFS_FS_I(inode);
@@ -772,15 +781,6 @@ void afs_evict_inode(struct inode *inode)
truncate_inode_pages_final(&inode->i_data);
clear_inode(inode);
- write_seqlock(&vnode->cb_lock);
- cbi = rcu_dereference_protected(vnode->cb_interest,
- lockdep_is_held(&vnode->cb_lock.lock));
- if (cbi) {
- afs_put_cb_interest(afs_i2net(inode), cbi);
- rcu_assign_pointer(vnode->cb_interest, NULL);
- }
- write_sequnlock(&vnode->cb_lock);
-
while (!list_empty(&vnode->wb_keys)) {
struct afs_wb_key *wbk = list_entry(vnode->wb_keys.next,
struct afs_wb_key, vnode_link);
@@ -808,69 +808,77 @@ void afs_evict_inode(struct inode *inode)
_leave("");
}
+static void afs_setattr_success(struct afs_operation *op)
+{
+ struct inode *inode = &op->file[0].vnode->vfs_inode;
+
+ afs_vnode_commit_status(op, &op->file[0]);
+ if (op->setattr.attr->ia_valid & ATTR_SIZE) {
+ loff_t i_size = inode->i_size, size = op->setattr.attr->ia_size;
+ if (size > i_size)
+ pagecache_isize_extended(inode, i_size, size);
+ truncate_pagecache(inode, size);
+ }
+}
+
+static const struct afs_operation_ops afs_setattr_operation = {
+ .issue_afs_rpc = afs_fs_setattr,
+ .issue_yfs_rpc = yfs_fs_setattr,
+ .success = afs_setattr_success,
+};
+
/*
* set the attributes of an inode
*/
int afs_setattr(struct dentry *dentry, struct iattr *attr)
{
- struct afs_fs_cursor fc;
- struct afs_status_cb *scb;
+ struct afs_operation *op;
struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry));
- struct key *key;
- int ret = -ENOMEM;
+ int ret;
_enter("{%llx:%llu},{n=%pd},%x",
vnode->fid.vid, vnode->fid.vnode, dentry,
attr->ia_valid);
if (!(attr->ia_valid & (ATTR_SIZE | ATTR_MODE | ATTR_UID | ATTR_GID |
- ATTR_MTIME))) {
+ ATTR_MTIME | ATTR_MTIME_SET | ATTR_TIMES_SET |
+ ATTR_TOUCH))) {
_leave(" = 0 [unsupported]");
return 0;
}
- scb = kzalloc(sizeof(struct afs_status_cb), GFP_KERNEL);
- if (!scb)
- goto error;
+ if (attr->ia_valid & ATTR_SIZE) {
+ if (!S_ISREG(vnode->vfs_inode.i_mode))
+ return -EISDIR;
- /* flush any dirty data outstanding on a regular file */
- if (S_ISREG(vnode->vfs_inode.i_mode))
- filemap_write_and_wait(vnode->vfs_inode.i_mapping);
+ ret = inode_newsize_ok(&vnode->vfs_inode, attr->ia_size);
+ if (ret)
+ return ret;
- if (attr->ia_valid & ATTR_FILE) {
- key = afs_file_key(attr->ia_file);
- } else {
- key = afs_request_key(vnode->volume->cell);
- if (IS_ERR(key)) {
- ret = PTR_ERR(key);
- goto error_scb;
- }
+ if (attr->ia_size == i_size_read(&vnode->vfs_inode))
+ attr->ia_valid &= ~ATTR_SIZE;
}
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, key, false)) {
- afs_dataversion_t data_version = vnode->status.data_version;
+ /* flush any dirty data outstanding on a regular file */
+ if (S_ISREG(vnode->vfs_inode.i_mode))
+ filemap_write_and_wait(vnode->vfs_inode.i_mapping);
- if (attr->ia_valid & ATTR_SIZE)
- data_version++;
+ op = afs_alloc_operation(((attr->ia_valid & ATTR_FILE) ?
+ afs_file_key(attr->ia_file) : NULL),
+ vnode->volume);
+ if (IS_ERR(op))
+ return PTR_ERR(op);
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(vnode);
- afs_fs_setattr(&fc, attr, scb);
- }
+ afs_op_set_vnode(op, 0, vnode);
+ op->setattr.attr = attr;
- afs_check_for_remote_deletion(&fc, vnode);
- afs_vnode_commit_status(&fc, vnode, fc.cb_break,
- &data_version, scb);
- ret = afs_end_vnode_operation(&fc);
+ if (attr->ia_valid & ATTR_SIZE) {
+ op->file[0].dv_delta = 1;
+ op->file[0].set_size = true;
}
+ op->ctime = attr->ia_ctime;
+ op->file[0].update_ctime = 1;
- if (!(attr->ia_valid & ATTR_FILE))
- key_put(key);
-
-error_scb:
- kfree(scb);
-error:
- _leave(" = %d", ret);
- return ret;
+ op->ops = &afs_setattr_operation;
+ return afs_do_sync_operation(op);
}
diff --git a/fs/afs/internal.h b/fs/afs/internal.h
index ef732dd4e7ef..792ac711985e 100644
--- a/fs/afs/internal.h
+++ b/fs/afs/internal.h
@@ -59,13 +59,6 @@ struct afs_fs_context {
struct key *key; /* key to use for secure mounting */
};
-struct afs_iget_data {
- struct afs_fid fid;
- struct afs_volume *volume; /* volume on which resides */
- unsigned int cb_v_break; /* Pre-fetch volume break count */
- unsigned int cb_s_break; /* Pre-fetch server break count */
-};
-
enum afs_call_state {
AFS_CALL_CL_REQUESTING, /* Client: Request is being sent */
AFS_CALL_CL_AWAIT_REPLY, /* Client: Awaiting reply */
@@ -90,7 +83,6 @@ struct afs_addr_list {
unsigned char nr_ipv4; /* Number of IPv4 addresses */
enum dns_record_source source:8;
enum dns_lookup_status status:8;
- unsigned long probed; /* Mask of servers that have been probed */
unsigned long failed; /* Mask of addrs that failed locally/ICMP */
unsigned long responded; /* Mask of addrs that responded */
struct sockaddr_rxrpc addrs[];
@@ -111,10 +103,7 @@ struct afs_call {
struct afs_net *net; /* The network namespace */
struct afs_server *server; /* The fileserver record if fs op (pins ref) */
struct afs_vlserver *vlserver; /* The vlserver record if vl op */
- struct afs_cb_interest *cbi; /* Callback interest for server used */
- struct afs_vnode *lvnode; /* vnode being locked */
void *request; /* request data (first part) */
- struct address_space *mapping; /* Pages being written from */
struct iov_iter def_iter; /* Default buffer/data iterator */
struct iov_iter *iter; /* Iterator currently in use */
union { /* Convenience for ->def_iter */
@@ -126,32 +115,19 @@ struct afs_call {
long ret0; /* Value to reply with instead of 0 */
struct afs_addr_list *ret_alist;
struct afs_vldb_entry *ret_vldb;
- struct afs_acl *ret_acl;
+ char *ret_str;
};
- struct afs_fid *out_fid;
- struct afs_status_cb *out_dir_scb;
- struct afs_status_cb *out_scb;
- struct yfs_acl *out_yacl;
- struct afs_volsync *out_volsync;
- struct afs_volume_status *out_volstatus;
- struct afs_read *read_request;
+ struct afs_operation *op;
unsigned int server_index;
- pgoff_t first; /* first page in mapping to deal with */
- pgoff_t last; /* last page in mapping to deal with */
atomic_t usage;
enum afs_call_state state;
spinlock_t state_lock;
int error; /* error code */
u32 abort_code; /* Remote abort ID or 0 */
- u32 epoch;
unsigned int max_lifespan; /* Maximum lifespan to set if not 0 */
unsigned request_size; /* size of request data */
unsigned reply_max; /* maximum size of reply */
- unsigned first_offset; /* offset into mapping[first] */
- union {
- unsigned last_to; /* amount of mapping[last] */
- unsigned count2; /* count used in unmarshalling */
- };
+ unsigned count2; /* count used in unmarshalling */
unsigned char unmarshall; /* unmarshalling phase */
unsigned char addr_ix; /* Address in ->alist */
bool drop_ref; /* T if need to drop ref for incoming call */
@@ -161,6 +137,7 @@ struct afs_call {
bool upgrade; /* T to request service upgrade */
bool have_reply_time; /* T if have got reply_time */
bool intr; /* T if interruptible */
+ bool unmarshalling_error; /* T if an unmarshalling error occurred */
u16 service_id; /* Actual service ID (after upgrade) */
unsigned int debug_id; /* Trace ID */
u32 operation_ID; /* operation ID for an incoming call */
@@ -291,6 +268,7 @@ struct afs_net {
struct timer_list cells_timer;
atomic_t cells_outstanding;
seqlock_t cells_lock;
+ struct mutex cells_alias_lock;
struct mutex proc_cells_lock;
struct hlist_head proc_cells;
@@ -299,9 +277,10 @@ struct afs_net {
* cell, but in practice, people create aliases and subsets and there's
* no easy way to distinguish them.
*/
- seqlock_t fs_lock; /* For fs_servers */
+ seqlock_t fs_lock; /* For fs_servers, fs_probe_*, fs_proc */
struct rb_root fs_servers; /* afs_server (by server UUID or address) */
- struct list_head fs_updates; /* afs_server (by update_at) */
+ struct list_head fs_probe_fast; /* List of afs_server to probe at 30s intervals */
+ struct list_head fs_probe_slow; /* List of afs_server to probe at 5m intervals */
struct hlist_head fs_proc; /* procfs servers list */
struct hlist_head fs_addresses4; /* afs_server (by lowest IPv4 addr) */
@@ -310,6 +289,9 @@ struct afs_net {
struct work_struct fs_manager;
struct timer_list fs_timer;
+
+ struct work_struct fs_prober;
+ struct timer_list fs_probe_timer;
atomic_t servers_outstanding;
/* File locking renewal management */
@@ -360,8 +342,10 @@ enum afs_cell_state {
* for authentication and encryption. The cell name is not typically used in
* the protocol.
*
- * There is no easy way to determine if two cells are aliases or one is a
- * subset of another.
+ * Two cells are determined to be aliases if they have an explicit alias (YFS
+ * only), share any VL servers in common or have at least one volume in common.
+ * "In common" means that the address list of the VL servers or the fileservers
+ * share at least one endpoint.
*/
struct afs_cell {
union {
@@ -369,6 +353,8 @@ struct afs_cell {
struct rb_node net_node; /* Node in net->cells */
};
struct afs_net *net;
+ struct afs_cell *alias_of; /* The cell this is an alias of */
+ struct afs_volume *root_volume; /* The root.cell volume if there is one */
struct key *anonymous_key; /* anonymous user key for this cell */
struct work_struct manager; /* Manager for init/deinit/dns */
struct hlist_node proc_link; /* /proc cell list link */
@@ -381,22 +367,28 @@ struct afs_cell {
unsigned long flags;
#define AFS_CELL_FL_NO_GC 0 /* The cell was added manually, don't auto-gc */
#define AFS_CELL_FL_DO_LOOKUP 1 /* DNS lookup requested */
+#define AFS_CELL_FL_CHECK_ALIAS 2 /* Need to check for aliases */
enum afs_cell_state state;
short error;
enum dns_record_source dns_source:8; /* Latest source of data from lookup */
enum dns_lookup_status dns_status:8; /* Latest status of data from lookup */
unsigned int dns_lookup_count; /* Counter of DNS lookups */
+ /* The volumes belonging to this cell */
+ struct rb_root volumes; /* Tree of volumes on this server */
+ struct hlist_head proc_volumes; /* procfs volume list */
+ seqlock_t volume_lock; /* For volumes */
+
/* Active fileserver interaction state. */
- struct list_head proc_volumes; /* procfs volume list */
- rwlock_t proc_lock;
+ struct rb_root fs_servers; /* afs_server (by server UUID) */
+ seqlock_t fs_lock; /* For fs_servers */
/* VL server list. */
rwlock_t vl_servers_lock; /* Lock on vl_servers */
struct afs_vlserver_list __rcu *vl_servers;
u8 name_len; /* Length of name */
- char name[64 + 1]; /* Cell name, case-flattened and NUL-padded */
+ char *name; /* Cell name, case-flattened and NUL-padded */
};
/*
@@ -471,6 +463,7 @@ struct afs_vldb_entry {
#define AFS_VLDB_QUERY_ERROR 4 /* - VL server returned error */
uuid_t fs_server[AFS_NMAXNSERVERS];
+ u32 addr_version[AFS_NMAXNSERVERS]; /* Registration change counters */
u8 fs_mask[AFS_NMAXNSERVERS];
#define AFS_VOL_VTM_RW 0x01 /* R/W version of the volume is available (on this server) */
#define AFS_VOL_VTM_RO 0x02 /* R/O version of the volume is available (on this server) */
@@ -492,96 +485,64 @@ struct afs_server {
};
struct afs_addr_list __rcu *addresses;
- struct rb_node uuid_rb; /* Link in net->servers */
+ struct afs_cell *cell; /* Cell to which belongs (pins ref) */
+ struct rb_node uuid_rb; /* Link in net->fs_servers */
+ struct afs_server __rcu *uuid_next; /* Next server with same UUID */
+ struct afs_server *uuid_prev; /* Previous server with same UUID */
+ struct list_head probe_link; /* Link in net->fs_probe_list */
struct hlist_node addr4_link; /* Link in net->fs_addresses4 */
struct hlist_node addr6_link; /* Link in net->fs_addresses6 */
struct hlist_node proc_link; /* Link in net->fs_proc */
struct afs_server *gc_next; /* Next server in manager's list */
- time64_t put_time; /* Time at which last put */
- time64_t update_at; /* Time at which to next update the record */
+ time64_t unuse_time; /* Time at which last unused */
unsigned long flags;
-#define AFS_SERVER_FL_NOT_READY 1 /* The record is not ready for use */
-#define AFS_SERVER_FL_NOT_FOUND 2 /* VL server says no such server */
-#define AFS_SERVER_FL_VL_FAIL 3 /* Failed to access VL server */
-#define AFS_SERVER_FL_UPDATING 4
-#define AFS_SERVER_FL_PROBED 5 /* The fileserver has been probed */
-#define AFS_SERVER_FL_PROBING 6 /* Fileserver is being probed */
-#define AFS_SERVER_FL_NO_IBULK 7 /* Fileserver doesn't support FS.InlineBulkStatus */
+#define AFS_SERVER_FL_RESPONDING 0 /* The server is responding */
+#define AFS_SERVER_FL_UPDATING 1
+#define AFS_SERVER_FL_NEEDS_UPDATE 2 /* Fileserver address list is out of date */
+#define AFS_SERVER_FL_NOT_READY 4 /* The record is not ready for use */
+#define AFS_SERVER_FL_NOT_FOUND 5 /* VL server says no such server */
+#define AFS_SERVER_FL_VL_FAIL 6 /* Failed to access VL server */
#define AFS_SERVER_FL_MAY_HAVE_CB 8 /* May have callbacks on this fileserver */
-#define AFS_SERVER_FL_IS_YFS 9 /* Server is YFS not AFS */
-#define AFS_SERVER_FL_NO_RM2 10 /* Fileserver doesn't support YFS.RemoveFile2 */
-#define AFS_SERVER_FL_HAVE_EPOCH 11 /* ->epoch is valid */
- atomic_t usage;
+#define AFS_SERVER_FL_IS_YFS 16 /* Server is YFS not AFS */
+#define AFS_SERVER_FL_NO_IBULK 17 /* Fileserver doesn't support FS.InlineBulkStatus */
+#define AFS_SERVER_FL_NO_RM2 18 /* Fileserver doesn't support YFS.RemoveFile2 */
+ atomic_t ref; /* Object refcount */
+ atomic_t active; /* Active user count */
u32 addr_version; /* Address list version */
- u32 cm_epoch; /* Server RxRPC epoch */
+ unsigned int rtt; /* Server's current RTT in uS */
unsigned int debug_id; /* Debugging ID for traces */
/* file service access */
rwlock_t fs_lock; /* access lock */
/* callback promise management */
- struct hlist_head cb_volumes; /* List of volume interests on this server */
unsigned cb_s_break; /* Break-everything counter. */
- rwlock_t cb_break_lock; /* Volume finding lock */
/* Probe state */
+ unsigned long probed_at; /* Time last probe was dispatched (jiffies) */
wait_queue_head_t probe_wq;
atomic_t probe_outstanding;
spinlock_t probe_lock;
struct {
- unsigned int rtt; /* RTT as ktime/64 */
+ unsigned int rtt; /* RTT in uS */
u32 abort_code;
- u32 cm_epoch;
short error;
- bool have_result;
bool responded:1;
bool is_yfs:1;
bool not_yfs:1;
bool local_failure:1;
- bool no_epoch:1;
- bool cm_probed:1;
- bool said_rebooted:1;
- bool said_inconsistent:1;
} probe;
};
/*
- * Volume collation in the server's callback interest list.
- */
-struct afs_vol_interest {
- struct hlist_node srv_link; /* Link in server->cb_volumes */
- struct hlist_head cb_interests; /* List of callback interests on the server */
- union {
- struct rcu_head rcu;
- afs_volid_t vid; /* Volume ID to match */
- };
- unsigned int usage;
-};
-
-/*
- * Interest by a superblock on a server.
- */
-struct afs_cb_interest {
- struct hlist_node cb_vlink; /* Link in vol_interest->cb_interests */
- struct afs_vol_interest *vol_interest;
- struct afs_server *server; /* Server on which this interest resides */
- struct super_block *sb; /* Superblock on which inodes reside */
- union {
- struct rcu_head rcu;
- afs_volid_t vid; /* Volume ID to match */
- };
- refcount_t usage;
-};
-
-/*
- * Replaceable server list.
+ * Replaceable volume server list.
*/
struct afs_server_entry {
struct afs_server *server;
- struct afs_cb_interest *cb_interest;
};
struct afs_server_list {
+ afs_volid_t vids[AFS_MAXTYPES]; /* Volume IDs */
refcount_t usage;
unsigned char nr_servers;
unsigned char preferred; /* Preferred server */
@@ -595,11 +556,16 @@ struct afs_server_list {
* Live AFS volume management.
*/
struct afs_volume {
- afs_volid_t vid; /* volume ID */
+ union {
+ struct rcu_head rcu;
+ afs_volid_t vid; /* volume ID */
+ };
atomic_t usage;
time64_t update_at; /* Time at which to next update */
struct afs_cell *cell; /* Cell to which belongs (pins ref) */
- struct list_head proc_link; /* Link in cell->vl_proc */
+ struct rb_node cell_node; /* Link in cell->volumes */
+ struct hlist_node proc_link; /* Link in cell->proc_volumes */
+ struct super_block __rcu *sb; /* Superblock on which inodes reside */
unsigned long flags;
#define AFS_VOLUME_NEEDS_UPDATE 0 /* - T if an update needs performing */
#define AFS_VOLUME_UPDATING 1 /* - T if an update is in progress */
@@ -607,10 +573,11 @@ struct afs_volume {
#define AFS_VOLUME_DELETED 3 /* - T if volume appears deleted */
#define AFS_VOLUME_OFFLINE 4 /* - T if volume offline notice given */
#define AFS_VOLUME_BUSY 5 /* - T if volume busy notice given */
+#define AFS_VOLUME_MAYBE_NO_IBULK 6 /* - T if some servers don't have InlineBulkStatus */
#ifdef CONFIG_AFS_FSCACHE
struct fscache_cookie *cache; /* caching cookie */
#endif
- struct afs_server_list *servers; /* List of servers on which volume resides */
+ struct afs_server_list __rcu *servers; /* List of servers on which volume resides */
rwlock_t servers_lock; /* Lock for ->servers */
unsigned int servers_seq; /* Incremented each time ->servers changes */
@@ -618,7 +585,6 @@ struct afs_volume {
rwlock_t cb_v_break_lock;
afs_voltype_t type; /* type of volume */
- short error;
char type_force; /* force volume type (suppress R/O -> R/W) */
u8 name_len;
u8 name[AFS_MAXVOLNAME + 1]; /* NUL-padded volume name */
@@ -668,6 +634,7 @@ struct afs_vnode {
#define AFS_VNODE_AUTOCELL 6 /* set if Vnode is an auto mount point */
#define AFS_VNODE_PSEUDODIR 7 /* set if Vnode is a pseudo directory */
#define AFS_VNODE_NEW_CONTENT 8 /* Set if file has new content (create/trunc-0) */
+#define AFS_VNODE_SILLY_DELETED 9 /* Set if file has been silly-deleted */
struct list_head wb_keys; /* List of keys available for writeback */
struct list_head pending_locks; /* locks waiting to be granted */
@@ -679,11 +646,11 @@ struct afs_vnode {
afs_lock_type_t lock_type : 8;
/* outstanding callback notification on this file */
- struct afs_cb_interest __rcu *cb_interest; /* Server on which this resides */
+ void *cb_server; /* Server with callback/filelock */
unsigned int cb_s_break; /* Mass break counter on ->server */
unsigned int cb_v_break; /* Mass break counter on ->volume */
unsigned int cb_break; /* Break counter on vnode */
- seqlock_t cb_lock; /* Lock for ->cb_interest, ->status, ->cb_*break */
+ seqlock_t cb_lock; /* Lock for ->cb_server, ->status, ->cb_*break */
time64_t cb_expires_at; /* time at which callback expires */
};
@@ -760,29 +727,121 @@ struct afs_vl_cursor {
};
/*
- * Cursor for iterating over a set of fileservers.
+ * Fileserver operation methods.
+ */
+struct afs_operation_ops {
+ void (*issue_afs_rpc)(struct afs_operation *op);
+ void (*issue_yfs_rpc)(struct afs_operation *op);
+ void (*success)(struct afs_operation *op);
+ void (*aborted)(struct afs_operation *op);
+ void (*edit_dir)(struct afs_operation *op);
+ void (*put)(struct afs_operation *op);
+};
+
+struct afs_vnode_param {
+ struct afs_vnode *vnode;
+ struct afs_fid fid; /* Fid to access */
+ struct afs_status_cb scb; /* Returned status and callback promise */
+ afs_dataversion_t dv_before; /* Data version before the call */
+ unsigned int cb_break_before; /* cb_break + cb_s_break before the call */
+ u8 dv_delta; /* Expected change in data version */
+ bool put_vnode:1; /* T if we have a ref on the vnode */
+ bool need_io_lock:1; /* T if we need the I/O lock on this */
+ bool update_ctime:1; /* Need to update the ctime */
+ bool set_size:1; /* Must update i_size */
+ bool op_unlinked:1; /* True if file was unlinked by op */
+};
+
+/*
+ * Fileserver operation wrapper, handling server and address rotation
+ * asynchronously. May make simultaneous calls to multiple servers.
*/
-struct afs_fs_cursor {
+struct afs_operation {
+ struct afs_net *net; /* Network namespace */
+ struct key *key; /* Key for the cell */
const struct afs_call_type *type; /* Type of call done */
+ const struct afs_operation_ops *ops;
+
+ /* Parameters/results for the operation */
+ struct afs_volume *volume; /* Volume being accessed */
+ struct afs_vnode_param file[2];
+ struct afs_vnode_param *more_files;
+ struct afs_volsync volsync;
+ struct dentry *dentry; /* Dentry to be altered */
+ struct dentry *dentry_2; /* Second dentry to be altered */
+ struct timespec64 mtime; /* Modification time to record */
+ struct timespec64 ctime; /* Change time to set */
+ short nr_files; /* Number of entries in file[], more_files */
+ short error;
+ unsigned int debug_id;
+
+ unsigned int cb_v_break; /* Volume break counter before op */
+ unsigned int cb_s_break; /* Server break counter before op */
+
+ union {
+ struct {
+ int which; /* Which ->file[] to fetch for */
+ } fetch_status;
+ struct {
+ int reason; /* enum afs_edit_dir_reason */
+ mode_t mode;
+ const char *symlink;
+ } create;
+ struct {
+ bool need_rehash;
+ } unlink;
+ struct {
+ struct dentry *rehash;
+ struct dentry *tmp;
+ bool new_negative;
+ } rename;
+ struct {
+ struct afs_read *req;
+ } fetch;
+ struct {
+ afs_lock_type_t type;
+ } lock;
+ struct {
+ struct address_space *mapping; /* Pages being written from */
+ pgoff_t first; /* first page in mapping to deal with */
+ pgoff_t last; /* last page in mapping to deal with */
+ unsigned first_offset; /* offset into mapping[first] */
+ unsigned last_to; /* amount of mapping[last] */
+ } store;
+ struct {
+ struct iattr *attr;
+ } setattr;
+ struct afs_acl *acl;
+ struct yfs_acl *yacl;
+ struct {
+ struct afs_volume_status vs;
+ struct kstatfs *buf;
+ } volstatus;
+ };
+
+ /* Fileserver iteration state */
struct afs_addr_cursor ac;
- struct afs_vnode *vnode;
struct afs_server_list *server_list; /* Current server list (pins ref) */
- struct afs_cb_interest *cbi; /* Server on which this resides (pins ref) */
- struct key *key; /* Key for the server */
+ struct afs_server *server; /* Server we're using (ref pinned by server_list) */
+ struct afs_call *call;
unsigned long untried; /* Bitmask of untried servers */
- unsigned int cb_break; /* cb_break + cb_s_break before the call */
- unsigned int cb_break_2; /* cb_break + cb_s_break (2nd vnode) */
short index; /* Current server */
- short error;
- unsigned short flags;
-#define AFS_FS_CURSOR_STOP 0x0001 /* Set to cease iteration */
-#define AFS_FS_CURSOR_VBUSY 0x0002 /* Set if seen VBUSY */
-#define AFS_FS_CURSOR_VMOVED 0x0004 /* Set if seen VMOVED */
-#define AFS_FS_CURSOR_VNOVOL 0x0008 /* Set if seen VNOVOL */
-#define AFS_FS_CURSOR_CUR_ONLY 0x0010 /* Set if current server only (file lock held) */
-#define AFS_FS_CURSOR_NO_VSLEEP 0x0020 /* Set to prevent sleep on VBUSY, VOFFLINE, ... */
-#define AFS_FS_CURSOR_INTR 0x0040 /* Set if op is interruptible */
unsigned short nr_iterations; /* Number of server iterations */
+
+ unsigned int flags;
+#define AFS_OPERATION_STOP 0x0001 /* Set to cease iteration */
+#define AFS_OPERATION_VBUSY 0x0002 /* Set if seen VBUSY */
+#define AFS_OPERATION_VMOVED 0x0004 /* Set if seen VMOVED */
+#define AFS_OPERATION_VNOVOL 0x0008 /* Set if seen VNOVOL */
+#define AFS_OPERATION_CUR_ONLY 0x0010 /* Set if current server only (file lock held) */
+#define AFS_OPERATION_NO_VSLEEP 0x0020 /* Set to prevent sleep on VBUSY, VOFFLINE, ... */
+#define AFS_OPERATION_UNINTR 0x0040 /* Set if op is uninterruptible */
+#define AFS_OPERATION_DOWNGRADE 0x0080 /* Set to retry with downgraded opcode */
+#define AFS_OPERATION_LOCK_0 0x0100 /* Set if have io_lock on file[0] */
+#define AFS_OPERATION_LOCK_1 0x0200 /* Set if have io_lock on file[1] */
+#define AFS_OPERATION_TRIED_ALL 0x0400 /* Set if we've tried all the fileservers */
+#define AFS_OPERATION_RETRY_SERVER 0x0800 /* Set if we should retry the current server */
+#define AFS_OPERATION_DIR_CONFLICT 0x1000 /* Set if we detected a 3rd-party dir change */
};
/*
@@ -840,29 +899,15 @@ extern void __afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason);
extern void afs_break_callback(struct afs_vnode *, enum afs_cb_break_reason);
extern void afs_break_callbacks(struct afs_server *, size_t, struct afs_callback_break *);
-extern int afs_register_server_cb_interest(struct afs_vnode *,
- struct afs_server_list *, unsigned int);
-extern void afs_put_cb_interest(struct afs_net *, struct afs_cb_interest *);
-extern void afs_clear_callback_interests(struct afs_net *, struct afs_server_list *);
-
-static inline struct afs_cb_interest *afs_get_cb_interest(struct afs_cb_interest *cbi)
-{
- if (cbi)
- refcount_inc(&cbi->usage);
- return cbi;
-}
-
static inline unsigned int afs_calc_vnode_cb_break(struct afs_vnode *vnode)
{
return vnode->cb_break + vnode->cb_v_break;
}
static inline bool afs_cb_is_broken(unsigned int cb_break,
- const struct afs_vnode *vnode,
- const struct afs_cb_interest *cbi)
+ const struct afs_vnode *vnode)
{
- return !cbi || cb_break != (vnode->cb_break +
- vnode->volume->cb_v_break);
+ return cb_break != (vnode->cb_break + vnode->volume->cb_v_break);
}
/*
@@ -892,6 +937,7 @@ extern const struct address_space_operations afs_dir_aops;
extern const struct dentry_operations afs_fs_dentry_operations;
extern void afs_d_release(struct dentry *);
+extern void afs_check_for_remote_deletion(struct afs_operation *);
/*
* dir_edit.c
@@ -954,72 +1000,84 @@ extern int afs_flock(struct file *, int, struct file_lock *);
/*
* fsclient.c
*/
-extern int afs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_status_cb *,
- struct afs_volsync *);
-extern int afs_fs_give_up_callbacks(struct afs_net *, struct afs_server *);
-extern int afs_fs_fetch_data(struct afs_fs_cursor *, struct afs_status_cb *, struct afs_read *);
-extern int afs_fs_create(struct afs_fs_cursor *, const char *, umode_t,
- struct afs_status_cb *, struct afs_fid *, struct afs_status_cb *);
-extern int afs_fs_remove(struct afs_fs_cursor *, struct afs_vnode *, const char *, bool,
- struct afs_status_cb *);
-extern int afs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *,
- struct afs_status_cb *, struct afs_status_cb *);
-extern int afs_fs_symlink(struct afs_fs_cursor *, const char *, const char *,
- struct afs_status_cb *, struct afs_fid *, struct afs_status_cb *);
-extern int afs_fs_rename(struct afs_fs_cursor *, const char *,
- struct afs_vnode *, const char *,
- struct afs_status_cb *, struct afs_status_cb *);
-extern int afs_fs_store_data(struct afs_fs_cursor *, struct address_space *,
- pgoff_t, pgoff_t, unsigned, unsigned, struct afs_status_cb *);
-extern int afs_fs_setattr(struct afs_fs_cursor *, struct iattr *, struct afs_status_cb *);
-extern int afs_fs_get_volume_status(struct afs_fs_cursor *, struct afs_volume_status *);
-extern int afs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t, struct afs_status_cb *);
-extern int afs_fs_extend_lock(struct afs_fs_cursor *, struct afs_status_cb *);
-extern int afs_fs_release_lock(struct afs_fs_cursor *, struct afs_status_cb *);
+extern void afs_fs_fetch_status(struct afs_operation *);
+extern void afs_fs_fetch_data(struct afs_operation *);
+extern void afs_fs_create_file(struct afs_operation *);
+extern void afs_fs_make_dir(struct afs_operation *);
+extern void afs_fs_remove_file(struct afs_operation *);
+extern void afs_fs_remove_dir(struct afs_operation *);
+extern void afs_fs_link(struct afs_operation *);
+extern void afs_fs_symlink(struct afs_operation *);
+extern void afs_fs_rename(struct afs_operation *);
+extern void afs_fs_store_data(struct afs_operation *);
+extern void afs_fs_setattr(struct afs_operation *);
+extern void afs_fs_get_volume_status(struct afs_operation *);
+extern void afs_fs_set_lock(struct afs_operation *);
+extern void afs_fs_extend_lock(struct afs_operation *);
+extern void afs_fs_release_lock(struct afs_operation *);
extern int afs_fs_give_up_all_callbacks(struct afs_net *, struct afs_server *,
struct afs_addr_cursor *, struct key *);
-extern struct afs_call *afs_fs_get_capabilities(struct afs_net *, struct afs_server *,
- struct afs_addr_cursor *, struct key *,
- unsigned int);
-extern int afs_fs_inline_bulk_status(struct afs_fs_cursor *, struct afs_net *,
- struct afs_fid *, struct afs_status_cb *,
- unsigned int, struct afs_volsync *);
-extern int afs_fs_fetch_status(struct afs_fs_cursor *, struct afs_net *,
- struct afs_fid *, struct afs_status_cb *,
- struct afs_volsync *);
+extern bool afs_fs_get_capabilities(struct afs_net *, struct afs_server *,
+ struct afs_addr_cursor *, struct key *);
+extern void afs_fs_inline_bulk_status(struct afs_operation *);
struct afs_acl {
u32 size;
u8 data[];
};
-extern struct afs_acl *afs_fs_fetch_acl(struct afs_fs_cursor *, struct afs_status_cb *);
-extern int afs_fs_store_acl(struct afs_fs_cursor *, const struct afs_acl *,
- struct afs_status_cb *);
+extern void afs_fs_fetch_acl(struct afs_operation *);
+extern void afs_fs_store_acl(struct afs_operation *);
+
+/*
+ * fs_operation.c
+ */
+extern struct afs_operation *afs_alloc_operation(struct key *, struct afs_volume *);
+extern int afs_put_operation(struct afs_operation *);
+extern bool afs_begin_vnode_operation(struct afs_operation *);
+extern void afs_wait_for_operation(struct afs_operation *);
+extern int afs_do_sync_operation(struct afs_operation *);
+
+static inline void afs_op_nomem(struct afs_operation *op)
+{
+ op->error = -ENOMEM;
+}
+
+static inline void afs_op_set_vnode(struct afs_operation *op, unsigned int n,
+ struct afs_vnode *vnode)
+{
+ op->file[n].vnode = vnode;
+ op->file[n].need_io_lock = true;
+}
+
+static inline void afs_op_set_fid(struct afs_operation *op, unsigned int n,
+ const struct afs_fid *fid)
+{
+ op->file[n].fid = *fid;
+}
/*
* fs_probe.c
*/
extern void afs_fileserver_probe_result(struct afs_call *);
-extern int afs_probe_fileservers(struct afs_net *, struct key *, struct afs_server_list *);
+extern void afs_fs_probe_fileserver(struct afs_net *, struct afs_server *, struct key *, bool);
extern int afs_wait_for_fs_probes(struct afs_server_list *, unsigned long);
+extern void afs_probe_fileserver(struct afs_net *, struct afs_server *);
+extern void afs_fs_probe_dispatcher(struct work_struct *);
+extern int afs_wait_for_one_fs_probe(struct afs_server *, bool);
+extern void afs_fs_probe_cleanup(struct afs_net *);
/*
* inode.c
*/
-extern void afs_vnode_commit_status(struct afs_fs_cursor *,
- struct afs_vnode *,
- unsigned int,
- const afs_dataversion_t *,
- struct afs_status_cb *);
+extern const struct afs_operation_ops afs_fetch_status_operation;
+
+extern void afs_vnode_commit_status(struct afs_operation *, struct afs_vnode_param *);
extern int afs_fetch_status(struct afs_vnode *, struct key *, bool, afs_access_t *);
-extern int afs_iget5_test(struct inode *, void *);
+extern int afs_ilookup5_test_by_fid(struct inode *, void *);
extern struct inode *afs_iget_pseudo_dir(struct super_block *, bool);
-extern struct inode *afs_iget(struct super_block *, struct key *,
- struct afs_iget_data *, struct afs_status_cb *,
- struct afs_cb_interest *,
- struct afs_vnode *);
-extern void afs_zap_data(struct afs_vnode *);
+extern struct inode *afs_iget(struct afs_operation *, struct afs_vnode_param *);
+extern struct inode *afs_root_iget(struct super_block *, struct key *);
extern bool afs_check_validity(struct afs_vnode *);
extern int afs_validate(struct afs_vnode *, struct key *);
extern int afs_getattr(const struct path *, struct kstat *, u32, unsigned int);
@@ -1106,11 +1164,8 @@ static inline void afs_put_sysnames(struct afs_sysnames *sysnames) {}
/*
* rotate.c
*/
-extern bool afs_begin_vnode_operation(struct afs_fs_cursor *, struct afs_vnode *,
- struct key *, bool);
-extern bool afs_select_fileserver(struct afs_fs_cursor *);
-extern bool afs_select_current_fileserver(struct afs_fs_cursor *);
-extern int afs_end_vnode_operation(struct afs_fs_cursor *);
+extern bool afs_select_fileserver(struct afs_operation *);
+extern void afs_dump_edestaddrreq(const struct afs_operation *);
/*
* rxrpc.c
@@ -1130,12 +1185,17 @@ extern void afs_flat_call_destructor(struct afs_call *);
extern void afs_send_empty_reply(struct afs_call *);
extern void afs_send_simple_reply(struct afs_call *, const void *, size_t);
extern int afs_extract_data(struct afs_call *, bool);
-extern int afs_protocol_error(struct afs_call *, int, enum afs_eproto_cause);
+extern int afs_protocol_error(struct afs_call *, enum afs_eproto_cause);
-static inline void afs_set_fc_call(struct afs_call *call, struct afs_fs_cursor *fc)
+static inline void afs_make_op_call(struct afs_operation *op, struct afs_call *call,
+ gfp_t gfp)
{
- call->intr = fc->flags & AFS_FS_CURSOR_INTR;
- fc->type = call->type;
+ op->call = call;
+ op->type = call->type;
+ call->op = op;
+ call->key = op->key;
+ call->intr = !(op->flags & AFS_OPERATION_UNINTR);
+ afs_make_call(&op->ac, call, gfp);
}
static inline void afs_extract_begin(struct afs_call *call, void *buf, size_t size)
@@ -1243,13 +1303,33 @@ extern spinlock_t afs_server_peer_lock;
extern struct afs_server *afs_find_server(struct afs_net *,
const struct sockaddr_rxrpc *);
extern struct afs_server *afs_find_server_by_uuid(struct afs_net *, const uuid_t *);
-extern struct afs_server *afs_lookup_server(struct afs_cell *, struct key *, const uuid_t *);
+extern struct afs_server *afs_lookup_server(struct afs_cell *, struct key *, const uuid_t *, u32);
extern struct afs_server *afs_get_server(struct afs_server *, enum afs_server_trace);
+extern struct afs_server *afs_use_server(struct afs_server *, enum afs_server_trace);
+extern void afs_unuse_server(struct afs_net *, struct afs_server *, enum afs_server_trace);
+extern void afs_unuse_server_notime(struct afs_net *, struct afs_server *, enum afs_server_trace);
extern void afs_put_server(struct afs_net *, struct afs_server *, enum afs_server_trace);
extern void afs_manage_servers(struct work_struct *);
extern void afs_servers_timer(struct timer_list *);
+extern void afs_fs_probe_timer(struct timer_list *);
extern void __net_exit afs_purge_servers(struct afs_net *);
-extern bool afs_check_server_record(struct afs_fs_cursor *, struct afs_server *);
+extern bool afs_check_server_record(struct afs_operation *, struct afs_server *);
+
+static inline void afs_inc_servers_outstanding(struct afs_net *net)
+{
+ atomic_inc(&net->servers_outstanding);
+}
+
+static inline void afs_dec_servers_outstanding(struct afs_net *net)
+{
+ if (atomic_dec_and_test(&net->servers_outstanding))
+ wake_up_var(&net->servers_outstanding);
+}
+
+static inline bool afs_is_probing_server(struct afs_server *server)
+{
+ return list_empty(&server->probe_link);
+}
/*
* server_list.c
@@ -1281,6 +1361,12 @@ extern struct afs_addr_list *afs_vl_get_addrs_u(struct afs_vl_cursor *, const uu
extern struct afs_call *afs_vl_get_capabilities(struct afs_net *, struct afs_addr_cursor *,
struct key *, struct afs_vlserver *, unsigned int);
extern struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_vl_cursor *, const uuid_t *);
+extern char *afs_yfsvl_get_cell_name(struct afs_vl_cursor *);
+
+/*
+ * vl_alias.c
+ */
+extern int afs_cell_detect_alias(struct afs_cell *, struct key *);
/*
* vl_probe.c
@@ -1324,18 +1410,12 @@ extern struct afs_vlserver_list *afs_extract_vlserver_list(struct afs_cell *,
/*
* volume.c
*/
-static inline struct afs_volume *__afs_get_volume(struct afs_volume *volume)
-{
- if (volume)
- atomic_inc(&volume->usage);
- return volume;
-}
-
extern struct afs_volume *afs_create_volume(struct afs_fs_context *);
extern void afs_activate_volume(struct afs_volume *);
extern void afs_deactivate_volume(struct afs_volume *);
-extern void afs_put_volume(struct afs_cell *, struct afs_volume *);
-extern int afs_check_volume_status(struct afs_volume *, struct key *);
+extern struct afs_volume *afs_get_volume(struct afs_volume *, enum afs_volume_trace);
+extern void afs_put_volume(struct afs_net *, struct afs_volume *, enum afs_volume_trace);
+extern int afs_check_volume_status(struct afs_volume *, struct afs_operation *);
/*
* write.c
@@ -1364,36 +1444,23 @@ extern ssize_t afs_listxattr(struct dentry *, char *, size_t);
/*
* yfsclient.c
*/
-extern int yfs_fs_fetch_file_status(struct afs_fs_cursor *, struct afs_status_cb *,
- struct afs_volsync *);
-extern int yfs_fs_fetch_data(struct afs_fs_cursor *, struct afs_status_cb *, struct afs_read *);
-extern int yfs_fs_create_file(struct afs_fs_cursor *, const char *, umode_t, struct afs_status_cb *,
- struct afs_fid *, struct afs_status_cb *);
-extern int yfs_fs_make_dir(struct afs_fs_cursor *, const char *, umode_t, struct afs_status_cb *,
- struct afs_fid *, struct afs_status_cb *);
-extern int yfs_fs_remove_file2(struct afs_fs_cursor *, struct afs_vnode *, const char *,
- struct afs_status_cb *, struct afs_status_cb *);
-extern int yfs_fs_remove(struct afs_fs_cursor *, struct afs_vnode *, const char *, bool,
- struct afs_status_cb *);
-extern int yfs_fs_link(struct afs_fs_cursor *, struct afs_vnode *, const char *,
- struct afs_status_cb *, struct afs_status_cb *);
-extern int yfs_fs_symlink(struct afs_fs_cursor *, const char *, const char *,
- struct afs_status_cb *, struct afs_fid *, struct afs_status_cb *);
-extern int yfs_fs_rename(struct afs_fs_cursor *, const char *, struct afs_vnode *, const char *,
- struct afs_status_cb *, struct afs_status_cb *);
-extern int yfs_fs_store_data(struct afs_fs_cursor *, struct address_space *,
- pgoff_t, pgoff_t, unsigned, unsigned, struct afs_status_cb *);
-extern int yfs_fs_setattr(struct afs_fs_cursor *, struct iattr *, struct afs_status_cb *);
-extern int yfs_fs_get_volume_status(struct afs_fs_cursor *, struct afs_volume_status *);
-extern int yfs_fs_set_lock(struct afs_fs_cursor *, afs_lock_type_t, struct afs_status_cb *);
-extern int yfs_fs_extend_lock(struct afs_fs_cursor *, struct afs_status_cb *);
-extern int yfs_fs_release_lock(struct afs_fs_cursor *, struct afs_status_cb *);
-extern int yfs_fs_fetch_status(struct afs_fs_cursor *, struct afs_net *,
- struct afs_fid *, struct afs_status_cb *,
- struct afs_volsync *);
-extern int yfs_fs_inline_bulk_status(struct afs_fs_cursor *, struct afs_net *,
- struct afs_fid *, struct afs_status_cb *,
- unsigned int, struct afs_volsync *);
+extern void yfs_fs_fetch_data(struct afs_operation *);
+extern void yfs_fs_create_file(struct afs_operation *);
+extern void yfs_fs_make_dir(struct afs_operation *);
+extern void yfs_fs_remove_file2(struct afs_operation *);
+extern void yfs_fs_remove_file(struct afs_operation *);
+extern void yfs_fs_remove_dir(struct afs_operation *);
+extern void yfs_fs_link(struct afs_operation *);
+extern void yfs_fs_symlink(struct afs_operation *);
+extern void yfs_fs_rename(struct afs_operation *);
+extern void yfs_fs_store_data(struct afs_operation *);
+extern void yfs_fs_setattr(struct afs_operation *);
+extern void yfs_fs_get_volume_status(struct afs_operation *);
+extern void yfs_fs_set_lock(struct afs_operation *);
+extern void yfs_fs_extend_lock(struct afs_operation *);
+extern void yfs_fs_release_lock(struct afs_operation *);
+extern void yfs_fs_fetch_status(struct afs_operation *);
+extern void yfs_fs_inline_bulk_status(struct afs_operation *);
struct yfs_acl {
struct afs_acl *acl; /* Dir/file/symlink ACL */
@@ -1406,10 +1473,8 @@ struct yfs_acl {
};
extern void yfs_free_opaque_acl(struct yfs_acl *);
-extern struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *, struct yfs_acl *,
- struct afs_status_cb *);
-extern int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *, const struct afs_acl *,
- struct afs_status_cb *);
+extern void yfs_fs_fetch_opaque_acl(struct afs_operation *);
+extern void yfs_fs_store_opaque_acl2(struct afs_operation *);
/*
* Miscellaneous inline functions.
@@ -1424,13 +1489,30 @@ static inline struct inode *AFS_VNODE_TO_I(struct afs_vnode *vnode)
return &vnode->vfs_inode;
}
-static inline void afs_check_for_remote_deletion(struct afs_fs_cursor *fc,
- struct afs_vnode *vnode)
+/*
+ * Note that a dentry got changed. We need to set d_fsdata to the data version
+ * number derived from the result of the operation. It doesn't matter if
+ * d_fsdata goes backwards as we'll just revalidate.
+ */
+static inline void afs_update_dentry_version(struct afs_operation *op,
+ struct afs_vnode_param *dir_vp,
+ struct dentry *dentry)
+{
+ if (!op->error)
+ dentry->d_fsdata =
+ (void *)(unsigned long)dir_vp->scb.status.data_version;
+}
+
+/*
+ * Check for a conflicting operation on a directory that we just unlinked from.
+ * If someone managed to sneak a link or an unlink in on the file we just
+ * unlinked, we won't be able to trust nlink on an AFS file (but not YFS).
+ */
+static inline void afs_check_dir_conflict(struct afs_operation *op,
+ struct afs_vnode_param *dvp)
{
- if (fc->ac.error == -ENOENT) {
- set_bit(AFS_VNODE_DELETED, &vnode->flags);
- afs_break_callback(vnode, afs_cb_break_for_deleted);
- }
+ if (dvp->dv_before + dvp->dv_delta != dvp->scb.status.data_version)
+ op->flags |= AFS_OPERATION_DIR_CONFLICT;
}
static inline int afs_io_error(struct afs_call *call, enum afs_io_error where)
diff --git a/fs/afs/main.c b/fs/afs/main.c
index c9c45d7078bd..31b472f7c734 100644
--- a/fs/afs/main.c
+++ b/fs/afs/main.c
@@ -82,12 +82,14 @@ static int __net_init afs_net_init(struct net *net_ns)
INIT_WORK(&net->cells_manager, afs_manage_cells);
timer_setup(&net->cells_timer, afs_cells_timer, 0);
+ mutex_init(&net->cells_alias_lock);
mutex_init(&net->proc_cells_lock);
INIT_HLIST_HEAD(&net->proc_cells);
seqlock_init(&net->fs_lock);
net->fs_servers = RB_ROOT;
- INIT_LIST_HEAD(&net->fs_updates);
+ INIT_LIST_HEAD(&net->fs_probe_fast);
+ INIT_LIST_HEAD(&net->fs_probe_slow);
INIT_HLIST_HEAD(&net->fs_proc);
INIT_HLIST_HEAD(&net->fs_addresses4);
@@ -96,6 +98,9 @@ static int __net_init afs_net_init(struct net *net_ns)
INIT_WORK(&net->fs_manager, afs_manage_servers);
timer_setup(&net->fs_timer, afs_servers_timer, 0);
+ INIT_WORK(&net->fs_prober, afs_fs_probe_dispatcher);
+ timer_setup(&net->fs_probe_timer, afs_fs_probe_timer, 0);
+ atomic_set(&net->servers_outstanding, 1);
ret = -ENOMEM;
sysnames = kzalloc(sizeof(*sysnames), GFP_KERNEL);
@@ -126,6 +131,7 @@ static int __net_init afs_net_init(struct net *net_ns)
error_open_socket:
net->live = false;
+ afs_fs_probe_cleanup(net);
afs_cell_purge(net);
afs_purge_servers(net);
error_cell_init:
@@ -146,6 +152,7 @@ static void __net_exit afs_net_exit(struct net *net_ns)
struct afs_net *net = afs_net(net_ns);
net->live = false;
+ afs_fs_probe_cleanup(net);
afs_cell_purge(net);
afs_purge_servers(net);
afs_close_socket(net);
diff --git a/fs/afs/misc.c b/fs/afs/misc.c
index 52b19e9c1535..5334f1bd2bca 100644
--- a/fs/afs/misc.c
+++ b/fs/afs/misc.c
@@ -83,6 +83,7 @@ int afs_abort_to_error(u32 abort_code)
case UAENOLCK: return -ENOLCK;
case UAENOTEMPTY: return -ENOTEMPTY;
case UAELOOP: return -ELOOP;
+ case UAEOVERFLOW: return -EOVERFLOW;
case UAENOMEDIUM: return -ENOMEDIUM;
case UAEDQUOT: return -EDQUOT;
diff --git a/fs/afs/proc.c b/fs/afs/proc.c
index 468e1713bce1..e817fc740ba0 100644
--- a/fs/afs/proc.c
+++ b/fs/afs/proc.c
@@ -38,7 +38,7 @@ static int afs_proc_cells_show(struct seq_file *m, void *v)
if (v == SEQ_START_TOKEN) {
/* display header on line 1 */
- seq_puts(m, "USE TTL SV NAME\n");
+ seq_puts(m, "USE TTL SV ST NAME\n");
return 0;
}
@@ -46,10 +46,11 @@ static int afs_proc_cells_show(struct seq_file *m, void *v)
vllist = rcu_dereference(cell->vl_servers);
/* display one cell per line on subsequent lines */
- seq_printf(m, "%3u %6lld %2u %s\n",
+ seq_printf(m, "%3u %6lld %2u %2u %s\n",
atomic_read(&cell->usage),
cell->dns_expiry - ktime_get_real_seconds(),
vllist->nr_servers,
+ cell->state,
cell->name);
return 0;
}
@@ -208,11 +209,10 @@ static const char afs_vol_types[3][3] = {
*/
static int afs_proc_cell_volumes_show(struct seq_file *m, void *v)
{
- struct afs_cell *cell = PDE_DATA(file_inode(m->file));
- struct afs_volume *vol = list_entry(v, struct afs_volume, proc_link);
+ struct afs_volume *vol = hlist_entry(v, struct afs_volume, proc_link);
/* Display header on line 1 */
- if (v == &cell->proc_volumes) {
+ if (v == SEQ_START_TOKEN) {
seq_puts(m, "USE VID TY NAME\n");
return 0;
}
@@ -230,8 +230,8 @@ static void *afs_proc_cell_volumes_start(struct seq_file *m, loff_t *_pos)
{
struct afs_cell *cell = PDE_DATA(file_inode(m->file));
- read_lock(&cell->proc_lock);
- return seq_list_start_head(&cell->proc_volumes, *_pos);
+ rcu_read_lock();
+ return seq_hlist_start_head_rcu(&cell->proc_volumes, *_pos);
}
static void *afs_proc_cell_volumes_next(struct seq_file *m, void *v,
@@ -239,15 +239,13 @@ static void *afs_proc_cell_volumes_next(struct seq_file *m, void *v,
{
struct afs_cell *cell = PDE_DATA(file_inode(m->file));
- return seq_list_next(v, &cell->proc_volumes, _pos);
+ return seq_hlist_next_rcu(v, &cell->proc_volumes, _pos);
}
static void afs_proc_cell_volumes_stop(struct seq_file *m, void *v)
__releases(cell->proc_lock)
{
- struct afs_cell *cell = PDE_DATA(file_inode(m->file));
-
- read_unlock(&cell->proc_lock);
+ rcu_read_unlock();
}
static const struct seq_operations afs_proc_cell_volumes_ops = {
@@ -378,20 +376,26 @@ static int afs_proc_servers_show(struct seq_file *m, void *v)
int i;
if (v == SEQ_START_TOKEN) {
- seq_puts(m, "UUID USE ADDR\n");
+ seq_puts(m, "UUID REF ACT\n");
return 0;
}
server = list_entry(v, struct afs_server, proc_link);
alist = rcu_dereference(server->addresses);
- seq_printf(m, "%pU %3d %pISpc%s\n",
+ seq_printf(m, "%pU %3d %3d\n",
&server->uuid,
- atomic_read(&server->usage),
- &alist->addrs[0].transport,
- alist->preferred == 0 ? "*" : "");
- for (i = 1; i < alist->nr_addrs; i++)
- seq_printf(m, " %pISpc%s\n",
- &alist->addrs[i].transport,
+ atomic_read(&server->ref),
+ atomic_read(&server->active));
+ seq_printf(m, " - info: fl=%lx rtt=%u brk=%x\n",
+ server->flags, server->rtt, server->cb_s_break);
+ seq_printf(m, " - probe: last=%d out=%d\n",
+ (int)(jiffies - server->probed_at) / HZ,
+ atomic_read(&server->probe_outstanding));
+ seq_printf(m, " - ALIST v=%u rsp=%lx f=%lx\n",
+ alist->version, alist->responded, alist->failed);
+ for (i = 0; i < alist->nr_addrs; i++)
+ seq_printf(m, " [%x] %pISpc%s\n",
+ i, &alist->addrs[i].transport,
alist->preferred == i ? "*" : "");
return 0;
}
@@ -563,6 +567,7 @@ void afs_put_sysnames(struct afs_sysnames *sysnames)
if (sysnames->subs[i] != afs_init_sysname &&
sysnames->subs[i] != sysnames->blank)
kfree(sysnames->subs[i]);
+ kfree(sysnames);
}
}
diff --git a/fs/afs/protocol_yfs.h b/fs/afs/protocol_yfs.h
index 32be9c698348..b5bd03b1d3c7 100644
--- a/fs/afs/protocol_yfs.h
+++ b/fs/afs/protocol_yfs.h
@@ -8,7 +8,7 @@
#define YFS_FS_SERVICE 2500
#define YFS_CM_SERVICE 2501
-#define YFSCBMAX 1024
+#define YFSCBMAX 1024
enum YFS_CM_Operations {
YFSCBProbe = 206, /* probe client */
diff --git a/fs/afs/rotate.c b/fs/afs/rotate.c
index 172ba569cd60..6a0935cb822f 100644
--- a/fs/afs/rotate.c
+++ b/fs/afs/rotate.c
@@ -15,60 +15,32 @@
#include "afs_fs.h"
/*
- * Begin an operation on the fileserver.
- *
- * Fileserver operations are serialised on the server by vnode, so we serialise
- * them here also using the io_lock.
- */
-bool afs_begin_vnode_operation(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
- struct key *key, bool intr)
-{
- memset(fc, 0, sizeof(*fc));
- fc->vnode = vnode;
- fc->key = key;
- fc->ac.error = SHRT_MAX;
- fc->error = -EDESTADDRREQ;
-
- if (intr) {
- fc->flags |= AFS_FS_CURSOR_INTR;
- if (mutex_lock_interruptible(&vnode->io_lock) < 0) {
- fc->error = -EINTR;
- fc->flags |= AFS_FS_CURSOR_STOP;
- return false;
- }
- } else {
- mutex_lock(&vnode->io_lock);
- }
-
- if (vnode->lock_state != AFS_VNODE_LOCK_NONE)
- fc->flags |= AFS_FS_CURSOR_CUR_ONLY;
- return true;
-}
-
-/*
* Begin iteration through a server list, starting with the vnode's last used
* server if possible, or the last recorded good server if not.
*/
-static bool afs_start_fs_iteration(struct afs_fs_cursor *fc,
+static bool afs_start_fs_iteration(struct afs_operation *op,
struct afs_vnode *vnode)
{
- struct afs_cb_interest *cbi;
+ struct afs_server *server;
+ void *cb_server;
int i;
- read_lock(&vnode->volume->servers_lock);
- fc->server_list = afs_get_serverlist(vnode->volume->servers);
- read_unlock(&vnode->volume->servers_lock);
+ read_lock(&op->volume->servers_lock);
+ op->server_list = afs_get_serverlist(
+ rcu_dereference_protected(op->volume->servers,
+ lockdep_is_held(&op->volume->servers_lock)));
+ read_unlock(&op->volume->servers_lock);
- fc->untried = (1UL << fc->server_list->nr_servers) - 1;
- fc->index = READ_ONCE(fc->server_list->preferred);
+ op->untried = (1UL << op->server_list->nr_servers) - 1;
+ op->index = READ_ONCE(op->server_list->preferred);
- cbi = rcu_dereference_protected(vnode->cb_interest,
- lockdep_is_held(&vnode->io_lock));
- if (cbi) {
+ cb_server = vnode->cb_server;
+ if (cb_server) {
/* See if the vnode's preferred record is still available */
- for (i = 0; i < fc->server_list->nr_servers; i++) {
- if (fc->server_list->servers[i].cb_interest == cbi) {
- fc->index = i;
+ for (i = 0; i < op->server_list->nr_servers; i++) {
+ server = op->server_list->servers[i].server;
+ if (server == cb_server) {
+ op->index = i;
goto found_interest;
}
}
@@ -77,21 +49,18 @@ static bool afs_start_fs_iteration(struct afs_fs_cursor *fc,
* serving this vnode, then we can't switch to another server
* and have to return an error.
*/
- if (fc->flags & AFS_FS_CURSOR_CUR_ONLY) {
- fc->error = -ESTALE;
+ if (op->flags & AFS_OPERATION_CUR_ONLY) {
+ op->error = -ESTALE;
return false;
}
/* Note that the callback promise is effectively broken */
write_seqlock(&vnode->cb_lock);
- ASSERTCMP(cbi, ==, rcu_access_pointer(vnode->cb_interest));
- rcu_assign_pointer(vnode->cb_interest, NULL);
+ ASSERTCMP(cb_server, ==, vnode->cb_server);
+ vnode->cb_server = NULL;
if (test_and_clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags))
vnode->cb_break++;
write_sequnlock(&vnode->cb_lock);
-
- afs_put_cb_interest(afs_v2net(vnode), cbi);
- cbi = NULL;
}
found_interest:
@@ -118,12 +87,12 @@ static void afs_busy(struct afs_volume *volume, u32 abort_code)
/*
* Sleep and retry the operation to the same fileserver.
*/
-static bool afs_sleep_and_retry(struct afs_fs_cursor *fc)
+static bool afs_sleep_and_retry(struct afs_operation *op)
{
- if (fc->flags & AFS_FS_CURSOR_INTR) {
+ if (!(op->flags & AFS_OPERATION_UNINTR)) {
msleep_interruptible(1000);
if (signal_pending(current)) {
- fc->error = -ERESTARTSYS;
+ op->error = -ERESTARTSYS;
return false;
}
} else {
@@ -137,26 +106,26 @@ static bool afs_sleep_and_retry(struct afs_fs_cursor *fc)
* Select the fileserver to use. May be called multiple times to rotate
* through the fileservers.
*/
-bool afs_select_fileserver(struct afs_fs_cursor *fc)
+bool afs_select_fileserver(struct afs_operation *op)
{
struct afs_addr_list *alist;
struct afs_server *server;
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode *vnode = op->file[0].vnode;
struct afs_error e;
u32 rtt;
- int error = fc->ac.error, i;
+ int error = op->ac.error, i;
_enter("%lx[%d],%lx[%d],%d,%d",
- fc->untried, fc->index,
- fc->ac.tried, fc->ac.index,
- error, fc->ac.abort_code);
+ op->untried, op->index,
+ op->ac.tried, op->ac.index,
+ error, op->ac.abort_code);
- if (fc->flags & AFS_FS_CURSOR_STOP) {
+ if (op->flags & AFS_OPERATION_STOP) {
_leave(" = f [stopped]");
return false;
}
- fc->nr_iterations++;
+ op->nr_iterations++;
/* Evaluate the result of the previous operation, if there was one. */
switch (error) {
@@ -166,8 +135,8 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc)
case 0:
default:
/* Success or local failure. Stop. */
- fc->error = error;
- fc->flags |= AFS_FS_CURSOR_STOP;
+ op->error = error;
+ op->flags |= AFS_OPERATION_STOP;
_leave(" = f [okay/local %d]", error);
return false;
@@ -175,42 +144,42 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc)
/* The far side rejected the operation on some grounds. This
* might involve the server being busy or the volume having been moved.
*/
- switch (fc->ac.abort_code) {
+ switch (op->ac.abort_code) {
case VNOVOL:
/* This fileserver doesn't know about the volume.
* - May indicate that the VL is wrong - retry once and compare
* the results.
* - May indicate that the fileserver couldn't attach to the vol.
*/
- if (fc->flags & AFS_FS_CURSOR_VNOVOL) {
- fc->error = -EREMOTEIO;
+ if (op->flags & AFS_OPERATION_VNOVOL) {
+ op->error = -EREMOTEIO;
goto next_server;
}
- write_lock(&vnode->volume->servers_lock);
- fc->server_list->vnovol_mask |= 1 << fc->index;
- write_unlock(&vnode->volume->servers_lock);
+ write_lock(&op->volume->servers_lock);
+ op->server_list->vnovol_mask |= 1 << op->index;
+ write_unlock(&op->volume->servers_lock);
- set_bit(AFS_VOLUME_NEEDS_UPDATE, &vnode->volume->flags);
- error = afs_check_volume_status(vnode->volume, fc->key);
+ set_bit(AFS_VOLUME_NEEDS_UPDATE, &op->volume->flags);
+ error = afs_check_volume_status(op->volume, op);
if (error < 0)
goto failed_set_error;
- if (test_bit(AFS_VOLUME_DELETED, &vnode->volume->flags)) {
- fc->error = -ENOMEDIUM;
+ if (test_bit(AFS_VOLUME_DELETED, &op->volume->flags)) {
+ op->error = -ENOMEDIUM;
goto failed;
}
/* If the server list didn't change, then assume that
* it's the fileserver having trouble.
*/
- if (vnode->volume->servers == fc->server_list) {
- fc->error = -EREMOTEIO;
+ if (rcu_access_pointer(op->volume->servers) == op->server_list) {
+ op->error = -EREMOTEIO;
goto next_server;
}
/* Try again */
- fc->flags |= AFS_FS_CURSOR_VNOVOL;
+ op->flags |= AFS_OPERATION_VNOVOL;
_leave(" = t [vnovol]");
return true;
@@ -220,20 +189,20 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc)
case VONLINE:
case VDISKFULL:
case VOVERQUOTA:
- fc->error = afs_abort_to_error(fc->ac.abort_code);
+ op->error = afs_abort_to_error(op->ac.abort_code);
goto next_server;
case VOFFLINE:
- if (!test_and_set_bit(AFS_VOLUME_OFFLINE, &vnode->volume->flags)) {
- afs_busy(vnode->volume, fc->ac.abort_code);
- clear_bit(AFS_VOLUME_BUSY, &vnode->volume->flags);
+ if (!test_and_set_bit(AFS_VOLUME_OFFLINE, &op->volume->flags)) {
+ afs_busy(op->volume, op->ac.abort_code);
+ clear_bit(AFS_VOLUME_BUSY, &op->volume->flags);
}
- if (fc->flags & AFS_FS_CURSOR_NO_VSLEEP) {
- fc->error = -EADV;
+ if (op->flags & AFS_OPERATION_NO_VSLEEP) {
+ op->error = -EADV;
goto failed;
}
- if (fc->flags & AFS_FS_CURSOR_CUR_ONLY) {
- fc->error = -ESTALE;
+ if (op->flags & AFS_OPERATION_CUR_ONLY) {
+ op->error = -ESTALE;
goto failed;
}
goto busy;
@@ -244,17 +213,17 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc)
/* Retry after going round all the servers unless we
* have a file lock we need to maintain.
*/
- if (fc->flags & AFS_FS_CURSOR_NO_VSLEEP) {
- fc->error = -EBUSY;
+ if (op->flags & AFS_OPERATION_NO_VSLEEP) {
+ op->error = -EBUSY;
goto failed;
}
- if (!test_and_set_bit(AFS_VOLUME_BUSY, &vnode->volume->flags)) {
- afs_busy(vnode->volume, fc->ac.abort_code);
- clear_bit(AFS_VOLUME_OFFLINE, &vnode->volume->flags);
+ if (!test_and_set_bit(AFS_VOLUME_BUSY, &op->volume->flags)) {
+ afs_busy(op->volume, op->ac.abort_code);
+ clear_bit(AFS_VOLUME_OFFLINE, &op->volume->flags);
}
busy:
- if (fc->flags & AFS_FS_CURSOR_CUR_ONLY) {
- if (!afs_sleep_and_retry(fc))
+ if (op->flags & AFS_OPERATION_CUR_ONLY) {
+ if (!afs_sleep_and_retry(op))
goto failed;
/* Retry with same server & address */
@@ -262,7 +231,7 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc)
return true;
}
- fc->flags |= AFS_FS_CURSOR_VBUSY;
+ op->flags |= AFS_OPERATION_VBUSY;
goto next_server;
case VMOVED:
@@ -273,15 +242,15 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc)
* We also limit the number of VMOVED hops we will
* honour, just in case someone sets up a loop.
*/
- if (fc->flags & AFS_FS_CURSOR_VMOVED) {
- fc->error = -EREMOTEIO;
+ if (op->flags & AFS_OPERATION_VMOVED) {
+ op->error = -EREMOTEIO;
goto failed;
}
- fc->flags |= AFS_FS_CURSOR_VMOVED;
+ op->flags |= AFS_OPERATION_VMOVED;
- set_bit(AFS_VOLUME_WAIT, &vnode->volume->flags);
- set_bit(AFS_VOLUME_NEEDS_UPDATE, &vnode->volume->flags);
- error = afs_check_volume_status(vnode->volume, fc->key);
+ set_bit(AFS_VOLUME_WAIT, &op->volume->flags);
+ set_bit(AFS_VOLUME_NEEDS_UPDATE, &op->volume->flags);
+ error = afs_check_volume_status(op->volume, op);
if (error < 0)
goto failed_set_error;
@@ -294,23 +263,23 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc)
*
* TODO: Retry a few times with sleeps.
*/
- if (vnode->volume->servers == fc->server_list) {
- fc->error = -ENOMEDIUM;
+ if (rcu_access_pointer(op->volume->servers) == op->server_list) {
+ op->error = -ENOMEDIUM;
goto failed;
}
goto restart_from_beginning;
default:
- clear_bit(AFS_VOLUME_OFFLINE, &vnode->volume->flags);
- clear_bit(AFS_VOLUME_BUSY, &vnode->volume->flags);
- fc->error = afs_abort_to_error(fc->ac.abort_code);
+ clear_bit(AFS_VOLUME_OFFLINE, &op->volume->flags);
+ clear_bit(AFS_VOLUME_BUSY, &op->volume->flags);
+ op->error = afs_abort_to_error(op->ac.abort_code);
goto failed;
}
case -ETIMEDOUT:
case -ETIME:
- if (fc->error != -EDESTADDRREQ)
+ if (op->error != -EDESTADDRREQ)
goto iterate_address;
/* Fall through */
case -ERFKILL:
@@ -320,103 +289,94 @@ bool afs_select_fileserver(struct afs_fs_cursor *fc)
case -EHOSTDOWN:
case -ECONNREFUSED:
_debug("no conn");
- fc->error = error;
+ op->error = error;
goto iterate_address;
case -ECONNRESET:
_debug("call reset");
- fc->error = error;
+ op->error = error;
goto failed;
}
restart_from_beginning:
_debug("restart");
- afs_end_cursor(&fc->ac);
- afs_put_cb_interest(afs_v2net(vnode), fc->cbi);
- fc->cbi = NULL;
- afs_put_serverlist(afs_v2net(vnode), fc->server_list);
- fc->server_list = NULL;
+ afs_end_cursor(&op->ac);
+ op->server = NULL;
+ afs_put_serverlist(op->net, op->server_list);
+ op->server_list = NULL;
start:
_debug("start");
/* See if we need to do an update of the volume record. Note that the
* volume may have moved or even have been deleted.
*/
- error = afs_check_volume_status(vnode->volume, fc->key);
+ error = afs_check_volume_status(op->volume, op);
if (error < 0)
goto failed_set_error;
- if (!afs_start_fs_iteration(fc, vnode))
+ if (!afs_start_fs_iteration(op, vnode))
goto failed;
- _debug("__ VOL %llx __", vnode->volume->vid);
- error = afs_probe_fileservers(afs_v2net(vnode), fc->key, fc->server_list);
- if (error < 0)
- goto failed_set_error;
+ _debug("__ VOL %llx __", op->volume->vid);
pick_server:
- _debug("pick [%lx]", fc->untried);
+ _debug("pick [%lx]", op->untried);
- error = afs_wait_for_fs_probes(fc->server_list, fc->untried);
+ error = afs_wait_for_fs_probes(op->server_list, op->untried);
if (error < 0)
goto failed_set_error;
/* Pick the untried server with the lowest RTT. If we have outstanding
* callbacks, we stick with the server we're already using if we can.
*/
- if (fc->cbi) {
- _debug("cbi %u", fc->index);
- if (test_bit(fc->index, &fc->untried))
+ if (op->server) {
+ _debug("server %u", op->index);
+ if (test_bit(op->index, &op->untried))
goto selected_server;
- afs_put_cb_interest(afs_v2net(vnode), fc->cbi);
- fc->cbi = NULL;
- _debug("nocbi");
+ op->server = NULL;
+ _debug("no server");
}
- fc->index = -1;
+ op->index = -1;
rtt = U32_MAX;
- for (i = 0; i < fc->server_list->nr_servers; i++) {
- struct afs_server *s = fc->server_list->servers[i].server;
+ for (i = 0; i < op->server_list->nr_servers; i++) {
+ struct afs_server *s = op->server_list->servers[i].server;
- if (!test_bit(i, &fc->untried) || !s->probe.responded)
+ if (!test_bit(i, &op->untried) ||
+ !test_bit(AFS_SERVER_FL_RESPONDING, &s->flags))
continue;
if (s->probe.rtt < rtt) {
- fc->index = i;
+ op->index = i;
rtt = s->probe.rtt;
}
}
- if (fc->index == -1)
+ if (op->index == -1)
goto no_more_servers;
selected_server:
- _debug("use %d", fc->index);
- __clear_bit(fc->index, &fc->untried);
+ _debug("use %d", op->index);
+ __clear_bit(op->index, &op->untried);
/* We're starting on a different fileserver from the list. We need to
* check it, create a callback intercept, find its address list and
* probe its capabilities before we use it.
*/
- ASSERTCMP(fc->ac.alist, ==, NULL);
- server = fc->server_list->servers[fc->index].server;
+ ASSERTCMP(op->ac.alist, ==, NULL);
+ server = op->server_list->servers[op->index].server;
- if (!afs_check_server_record(fc, server))
+ if (!afs_check_server_record(op, server))
goto failed;
_debug("USING SERVER: %pU", &server->uuid);
- /* Make sure we've got a callback interest record for this server. We
- * have to link it in before we send the request as we can be sent a
- * break request before we've finished decoding the reply and
- * installing the vnode.
- */
- error = afs_register_server_cb_interest(vnode, fc->server_list,
- fc->index);
- if (error < 0)
- goto failed_set_error;
-
- fc->cbi = afs_get_cb_interest(
- rcu_dereference_protected(vnode->cb_interest,
- lockdep_is_held(&vnode->io_lock)));
+ op->flags |= AFS_OPERATION_RETRY_SERVER;
+ op->server = server;
+ if (vnode->cb_server != server) {
+ vnode->cb_server = server;
+ vnode->cb_s_break = server->cb_s_break;
+ vnode->cb_v_break = vnode->volume->cb_v_break;
+ clear_bit(AFS_VNODE_CB_PROMISED, &vnode->flags);
+ }
read_lock(&server->fs_lock);
alist = rcu_dereference_protected(server->addresses,
@@ -424,44 +384,68 @@ selected_server:
afs_get_addrlist(alist);
read_unlock(&server->fs_lock);
- memset(&fc->ac, 0, sizeof(fc->ac));
+retry_server:
+ memset(&op->ac, 0, sizeof(op->ac));
- if (!fc->ac.alist)
- fc->ac.alist = alist;
+ if (!op->ac.alist)
+ op->ac.alist = alist;
else
afs_put_addrlist(alist);
- fc->ac.index = -1;
+ op->ac.index = -1;
iterate_address:
- ASSERT(fc->ac.alist);
+ ASSERT(op->ac.alist);
/* Iterate over the current server's address list to try and find an
* address on which it will respond to us.
*/
- if (!afs_iterate_addresses(&fc->ac))
- goto next_server;
+ if (!afs_iterate_addresses(&op->ac))
+ goto out_of_addresses;
- _debug("address [%u] %u/%u", fc->index, fc->ac.index, fc->ac.alist->nr_addrs);
+ _debug("address [%u] %u/%u %pISp",
+ op->index, op->ac.index, op->ac.alist->nr_addrs,
+ &op->ac.alist->addrs[op->ac.index].transport);
_leave(" = t");
return true;
+out_of_addresses:
+ /* We've now had a failure to respond on all of a server's addresses -
+ * immediately probe them again and consider retrying the server.
+ */
+ afs_probe_fileserver(op->net, op->server);
+ if (op->flags & AFS_OPERATION_RETRY_SERVER) {
+ alist = op->ac.alist;
+ error = afs_wait_for_one_fs_probe(
+ op->server, !(op->flags & AFS_OPERATION_UNINTR));
+ switch (error) {
+ case 0:
+ op->flags &= ~AFS_OPERATION_RETRY_SERVER;
+ goto retry_server;
+ case -ERESTARTSYS:
+ goto failed_set_error;
+ case -ETIME:
+ case -EDESTADDRREQ:
+ goto next_server;
+ }
+ }
+
next_server:
_debug("next");
- afs_end_cursor(&fc->ac);
+ afs_end_cursor(&op->ac);
goto pick_server;
no_more_servers:
/* That's all the servers poked to no good effect. Try again if some
* of them were busy.
*/
- if (fc->flags & AFS_FS_CURSOR_VBUSY)
+ if (op->flags & AFS_OPERATION_VBUSY)
goto restart_from_beginning;
e.error = -EDESTADDRREQ;
e.responded = false;
- for (i = 0; i < fc->server_list->nr_servers; i++) {
- struct afs_server *s = fc->server_list->servers[i].server;
+ for (i = 0; i < op->server_list->nr_servers; i++) {
+ struct afs_server *s = op->server_list->servers[i].server;
afs_prioritise_error(&e, READ_ONCE(s->probe.error),
s->probe.abort_code);
@@ -470,101 +454,18 @@ no_more_servers:
error = e.error;
failed_set_error:
- fc->error = error;
+ op->error = error;
failed:
- fc->flags |= AFS_FS_CURSOR_STOP;
- afs_end_cursor(&fc->ac);
- _leave(" = f [failed %d]", fc->error);
- return false;
-}
-
-/*
- * Select the same fileserver we used for a vnode before and only that
- * fileserver. We use this when we have a lock on that file, which is backed
- * only by the fileserver we obtained it from.
- */
-bool afs_select_current_fileserver(struct afs_fs_cursor *fc)
-{
- struct afs_vnode *vnode = fc->vnode;
- struct afs_cb_interest *cbi;
- struct afs_addr_list *alist;
- int error = fc->ac.error;
-
- _enter("");
-
- cbi = rcu_dereference_protected(vnode->cb_interest,
- lockdep_is_held(&vnode->io_lock));
-
- switch (error) {
- case SHRT_MAX:
- if (!cbi) {
- fc->error = -ESTALE;
- fc->flags |= AFS_FS_CURSOR_STOP;
- return false;
- }
-
- fc->cbi = afs_get_cb_interest(cbi);
-
- read_lock(&cbi->server->fs_lock);
- alist = rcu_dereference_protected(cbi->server->addresses,
- lockdep_is_held(&cbi->server->fs_lock));
- afs_get_addrlist(alist);
- read_unlock(&cbi->server->fs_lock);
- if (!alist) {
- fc->error = -ESTALE;
- fc->flags |= AFS_FS_CURSOR_STOP;
- return false;
- }
-
- memset(&fc->ac, 0, sizeof(fc->ac));
- fc->ac.alist = alist;
- fc->ac.index = -1;
- goto iterate_address;
-
- case 0:
- default:
- /* Success or local failure. Stop. */
- fc->error = error;
- fc->flags |= AFS_FS_CURSOR_STOP;
- _leave(" = f [okay/local %d]", error);
- return false;
-
- case -ECONNABORTED:
- fc->error = afs_abort_to_error(fc->ac.abort_code);
- fc->flags |= AFS_FS_CURSOR_STOP;
- _leave(" = f [abort]");
- return false;
-
- case -ERFKILL:
- case -EADDRNOTAVAIL:
- case -ENETUNREACH:
- case -EHOSTUNREACH:
- case -EHOSTDOWN:
- case -ECONNREFUSED:
- case -ETIMEDOUT:
- case -ETIME:
- _debug("no conn");
- fc->error = error;
- goto iterate_address;
- }
-
-iterate_address:
- /* Iterate over the current server's address list to try and find an
- * address on which it will respond to us.
- */
- if (afs_iterate_addresses(&fc->ac)) {
- _leave(" = t");
- return true;
- }
-
- afs_end_cursor(&fc->ac);
+ op->flags |= AFS_OPERATION_STOP;
+ afs_end_cursor(&op->ac);
+ _leave(" = f [failed %d]", op->error);
return false;
}
/*
* Dump cursor state in the case of the error being EDESTADDRREQ.
*/
-static void afs_dump_edestaddrreq(const struct afs_fs_cursor *fc)
+void afs_dump_edestaddrreq(const struct afs_operation *op)
{
static int count;
int i;
@@ -576,13 +477,14 @@ static void afs_dump_edestaddrreq(const struct afs_fs_cursor *fc)
rcu_read_lock();
pr_notice("EDESTADDR occurred\n");
- pr_notice("FC: cbb=%x cbb2=%x fl=%hx err=%hd\n",
- fc->cb_break, fc->cb_break_2, fc->flags, fc->error);
+ pr_notice("FC: cbb=%x cbb2=%x fl=%x err=%hd\n",
+ op->file[0].cb_break_before,
+ op->file[1].cb_break_before, op->flags, op->error);
pr_notice("FC: ut=%lx ix=%d ni=%u\n",
- fc->untried, fc->index, fc->nr_iterations);
+ op->untried, op->index, op->nr_iterations);
- if (fc->server_list) {
- const struct afs_server_list *sl = fc->server_list;
+ if (op->server_list) {
+ const struct afs_server_list *sl = op->server_list;
pr_notice("FC: SL nr=%u pr=%u vnov=%hx\n",
sl->nr_servers, sl->preferred, sl->vnovol_mask);
for (i = 0; i < sl->nr_servers; i++) {
@@ -596,41 +498,16 @@ static void afs_dump_edestaddrreq(const struct afs_fs_cursor *fc)
a->version,
a->nr_ipv4, a->nr_addrs, a->max_addrs,
a->preferred);
- pr_notice("FC: - pr=%lx R=%lx F=%lx\n",
- a->probed, a->responded, a->failed);
- if (a == fc->ac.alist)
+ pr_notice("FC: - R=%lx F=%lx\n",
+ a->responded, a->failed);
+ if (a == op->ac.alist)
pr_notice("FC: - current\n");
}
}
}
pr_notice("AC: t=%lx ax=%u ac=%d er=%d r=%u ni=%u\n",
- fc->ac.tried, fc->ac.index, fc->ac.abort_code, fc->ac.error,
- fc->ac.responded, fc->ac.nr_iterations);
+ op->ac.tried, op->ac.index, op->ac.abort_code, op->ac.error,
+ op->ac.responded, op->ac.nr_iterations);
rcu_read_unlock();
}
-
-/*
- * Tidy up a filesystem cursor and unlock the vnode.
- */
-int afs_end_vnode_operation(struct afs_fs_cursor *fc)
-{
- struct afs_net *net = afs_v2net(fc->vnode);
-
- if (fc->error == -EDESTADDRREQ ||
- fc->error == -EADDRNOTAVAIL ||
- fc->error == -ENETUNREACH ||
- fc->error == -EHOSTUNREACH)
- afs_dump_edestaddrreq(fc);
-
- mutex_unlock(&fc->vnode->io_lock);
-
- afs_end_cursor(&fc->ac);
- afs_put_cb_interest(net, fc->cbi);
- afs_put_serverlist(net, fc->server_list);
-
- if (fc->error == -ECONNABORTED)
- fc->error = afs_abort_to_error(fc->ac.abort_code);
-
- return fc->error;
-}
diff --git a/fs/afs/rxrpc.c b/fs/afs/rxrpc.c
index 1ecc67da6c1a..8fc8fb406a5a 100644
--- a/fs/afs/rxrpc.c
+++ b/fs/afs/rxrpc.c
@@ -37,7 +37,6 @@ int afs_open_socket(struct afs_net *net)
{
struct sockaddr_rxrpc srx;
struct socket *socket;
- unsigned int min_level;
int ret;
_enter("");
@@ -57,9 +56,8 @@ int afs_open_socket(struct afs_net *net)
srx.transport.sin6.sin6_family = AF_INET6;
srx.transport.sin6.sin6_port = htons(AFS_CM_PORT);
- min_level = RXRPC_SECURITY_ENCRYPT;
- ret = kernel_setsockopt(socket, SOL_RXRPC, RXRPC_MIN_SECURITY_LEVEL,
- (void *)&min_level, sizeof(min_level));
+ ret = rxrpc_sock_set_min_security_level(socket->sk,
+ RXRPC_SECURITY_ENCRYPT);
if (ret < 0)
goto error_2;
@@ -183,8 +181,7 @@ void afs_put_call(struct afs_call *call)
if (call->type->destructor)
call->type->destructor(call);
- afs_put_server(call->net, call->server, afs_server_trace_put_call);
- afs_put_cb_interest(call->net, call->cbi);
+ afs_unuse_server_notime(call->net, call->server, afs_server_trace_put_call);
afs_put_addrlist(call->alist);
kfree(call->request);
@@ -283,18 +280,19 @@ static void afs_load_bvec(struct afs_call *call, struct msghdr *msg,
struct bio_vec *bv, pgoff_t first, pgoff_t last,
unsigned offset)
{
+ struct afs_operation *op = call->op;
struct page *pages[AFS_BVEC_MAX];
unsigned int nr, n, i, to, bytes = 0;
nr = min_t(pgoff_t, last - first + 1, AFS_BVEC_MAX);
- n = find_get_pages_contig(call->mapping, first, nr, pages);
+ n = find_get_pages_contig(op->store.mapping, first, nr, pages);
ASSERTCMP(n, ==, nr);
msg->msg_flags |= MSG_MORE;
for (i = 0; i < nr; i++) {
to = PAGE_SIZE;
if (first + i >= last) {
- to = call->last_to;
+ to = op->store.last_to;
msg->msg_flags &= ~MSG_MORE;
}
bv[i].bv_page = pages[i];
@@ -324,13 +322,14 @@ static void afs_notify_end_request_tx(struct sock *sock,
*/
static int afs_send_pages(struct afs_call *call, struct msghdr *msg)
{
+ struct afs_operation *op = call->op;
struct bio_vec bv[AFS_BVEC_MAX];
unsigned int bytes, nr, loop, offset;
- pgoff_t first = call->first, last = call->last;
+ pgoff_t first = op->store.first, last = op->store.last;
int ret;
- offset = call->first_offset;
- call->first_offset = 0;
+ offset = op->store.first_offset;
+ op->store.first_offset = 0;
do {
afs_load_bvec(call, msg, bv, first, last, offset);
@@ -340,7 +339,7 @@ static int afs_send_pages(struct afs_call *call, struct msghdr *msg)
bytes = msg->msg_iter.count;
nr = msg->msg_iter.nr_segs;
- ret = rxrpc_kernel_send_data(call->net->socket, call->rxcall, msg,
+ ret = rxrpc_kernel_send_data(op->net->socket, call->rxcall, msg,
bytes, afs_notify_end_request_tx);
for (loop = 0; loop < nr; loop++)
put_page(bv[loop].bv_page);
@@ -350,7 +349,7 @@ static int afs_send_pages(struct afs_call *call, struct msghdr *msg)
first += nr;
} while (first <= last);
- trace_afs_sent_pages(call, call->first, last, first, ret);
+ trace_afs_sent_pages(call, op->store.first, last, first, ret);
return ret;
}
@@ -385,16 +384,18 @@ void afs_make_call(struct afs_addr_cursor *ac, struct afs_call *call, gfp_t gfp)
*/
tx_total_len = call->request_size;
if (call->send_pages) {
- if (call->last == call->first) {
- tx_total_len += call->last_to - call->first_offset;
+ struct afs_operation *op = call->op;
+
+ if (op->store.last == op->store.first) {
+ tx_total_len += op->store.last_to - op->store.first_offset;
} else {
/* It looks mathematically like you should be able to
* combine the following lines with the ones above, but
* unsigned arithmetic is fun when it wraps...
*/
- tx_total_len += PAGE_SIZE - call->first_offset;
- tx_total_len += call->last_to;
- tx_total_len += (call->last - call->first - 1) * PAGE_SIZE;
+ tx_total_len += PAGE_SIZE - op->store.first_offset;
+ tx_total_len += op->store.last_to;
+ tx_total_len += (op->store.last - op->store.first - 1) * PAGE_SIZE;
}
}
@@ -540,13 +541,15 @@ static void afs_deliver_to_call(struct afs_call *call)
ret = call->type->deliver(call);
state = READ_ONCE(call->state);
+ if (ret == 0 && call->unmarshalling_error)
+ ret = -EBADMSG;
switch (ret) {
case 0:
afs_queue_call_work(call);
if (state == AFS_CALL_CL_PROC_REPLY) {
- if (call->cbi)
+ if (call->op)
set_bit(AFS_SERVER_FL_MAY_HAVE_CB,
- &call->cbi->server->flags);
+ &call->op->server->flags);
goto call_complete;
}
ASSERTCMP(state, >, AFS_CALL_CL_PROC_REPLY);
@@ -959,9 +962,11 @@ int afs_extract_data(struct afs_call *call, bool want_more)
/*
* Log protocol error production.
*/
-noinline int afs_protocol_error(struct afs_call *call, int error,
+noinline int afs_protocol_error(struct afs_call *call,
enum afs_eproto_cause cause)
{
- trace_afs_protocol_error(call, error, cause);
- return error;
+ trace_afs_protocol_error(call, cause);
+ if (call)
+ call->unmarshalling_error = true;
+ return -EBADMSG;
}
diff --git a/fs/afs/security.c b/fs/afs/security.c
index ce9de1e6742b..90d852704328 100644
--- a/fs/afs/security.c
+++ b/fs/afs/security.c
@@ -170,8 +170,7 @@ void afs_cache_permit(struct afs_vnode *vnode, struct key *key,
break;
}
- if (afs_cb_is_broken(cb_break, vnode,
- rcu_dereference(vnode->cb_interest))) {
+ if (afs_cb_is_broken(cb_break, vnode)) {
changed = true;
break;
}
@@ -201,7 +200,7 @@ void afs_cache_permit(struct afs_vnode *vnode, struct key *key,
}
}
- if (afs_cb_is_broken(cb_break, vnode, rcu_dereference(vnode->cb_interest)))
+ if (afs_cb_is_broken(cb_break, vnode))
goto someone_else_changed_it;
/* We need a ref on any permits list we want to copy as we'll have to
@@ -281,8 +280,7 @@ found:
rcu_read_lock();
spin_lock(&vnode->lock);
zap = rcu_access_pointer(vnode->permit_cache);
- if (!afs_cb_is_broken(cb_break, vnode, rcu_dereference(vnode->cb_interest)) &&
- zap == permits)
+ if (!afs_cb_is_broken(cb_break, vnode) && zap == permits)
rcu_assign_pointer(vnode->permit_cache, replacement);
else
zap = replacement;
diff --git a/fs/afs/server.c b/fs/afs/server.c
index b7f3cb2130ca..e82e452e2612 100644
--- a/fs/afs/server.c
+++ b/fs/afs/server.c
@@ -12,19 +12,11 @@
#include "protocol_yfs.h"
static unsigned afs_server_gc_delay = 10; /* Server record timeout in seconds */
-static unsigned afs_server_update_delay = 30; /* Time till VLDB recheck in secs */
static atomic_t afs_server_debug_id;
-static void afs_inc_servers_outstanding(struct afs_net *net)
-{
- atomic_inc(&net->servers_outstanding);
-}
-
-static void afs_dec_servers_outstanding(struct afs_net *net)
-{
- if (atomic_dec_and_test(&net->servers_outstanding))
- wake_up_var(&net->servers_outstanding);
-}
+static struct afs_server *afs_maybe_use_server(struct afs_server *,
+ enum afs_server_trace);
+static void __afs_put_server(struct afs_net *, struct afs_server *);
/*
* Find a server by one of its addresses.
@@ -41,7 +33,7 @@ struct afs_server *afs_find_server(struct afs_net *net,
do {
if (server)
- afs_put_server(net, server, afs_server_trace_put_find_rsq);
+ afs_unuse_server_notime(net, server, afs_server_trace_put_find_rsq);
server = NULL;
read_seqbegin_or_lock(&net->fs_addr_lock, &seq);
@@ -79,9 +71,9 @@ struct afs_server *afs_find_server(struct afs_net *net,
}
server = NULL;
+ continue;
found:
- if (server && !atomic_inc_not_zero(&server->usage))
- server = NULL;
+ server = afs_maybe_use_server(server, afs_server_trace_get_by_addr);
} while (need_seqretry(&net->fs_addr_lock, seq));
@@ -92,7 +84,7 @@ struct afs_server *afs_find_server(struct afs_net *net,
}
/*
- * Look up a server by its UUID
+ * Look up a server by its UUID and mark it active.
*/
struct afs_server *afs_find_server_by_uuid(struct afs_net *net, const uuid_t *uuid)
{
@@ -108,7 +100,7 @@ struct afs_server *afs_find_server_by_uuid(struct afs_net *net, const uuid_t *uu
* changes.
*/
if (server)
- afs_put_server(net, server, afs_server_trace_put_uuid_rsq);
+ afs_unuse_server(net, server, afs_server_trace_put_uuid_rsq);
server = NULL;
read_seqbegin_or_lock(&net->fs_lock, &seq);
@@ -123,7 +115,7 @@ struct afs_server *afs_find_server_by_uuid(struct afs_net *net, const uuid_t *uu
} else if (diff > 0) {
p = p->rb_right;
} else {
- afs_get_server(server, afs_server_trace_get_by_uuid);
+ afs_use_server(server, afs_server_trace_get_by_uuid);
break;
}
@@ -138,13 +130,16 @@ struct afs_server *afs_find_server_by_uuid(struct afs_net *net, const uuid_t *uu
}
/*
- * Install a server record in the namespace tree
+ * Install a server record in the namespace tree. If there's a clash, we stick
+ * it into a list anchored on whichever afs_server struct is actually in the
+ * tree.
*/
-static struct afs_server *afs_install_server(struct afs_net *net,
+static struct afs_server *afs_install_server(struct afs_cell *cell,
struct afs_server *candidate)
{
const struct afs_addr_list *alist;
- struct afs_server *server;
+ struct afs_server *server, *next;
+ struct afs_net *net = cell->net;
struct rb_node **pp, *p;
int diff;
@@ -160,12 +155,30 @@ static struct afs_server *afs_install_server(struct afs_net *net,
_debug("- consider %p", p);
server = rb_entry(p, struct afs_server, uuid_rb);
diff = memcmp(&candidate->uuid, &server->uuid, sizeof(uuid_t));
- if (diff < 0)
+ if (diff < 0) {
pp = &(*pp)->rb_left;
- else if (diff > 0)
+ } else if (diff > 0) {
pp = &(*pp)->rb_right;
- else
- goto exists;
+ } else {
+ if (server->cell == cell)
+ goto exists;
+
+ /* We have the same UUID representing servers in
+ * different cells. Append the new server to the list.
+ */
+ for (;;) {
+ next = rcu_dereference_protected(
+ server->uuid_next,
+ lockdep_is_held(&net->fs_lock.lock));
+ if (!next)
+ break;
+ server = next;
+ }
+ rcu_assign_pointer(server->uuid_next, candidate);
+ candidate->uuid_prev = server;
+ server = candidate;
+ goto added_dup;
+ }
}
server = candidate;
@@ -173,6 +186,7 @@ static struct afs_server *afs_install_server(struct afs_net *net,
rb_insert_color(&server->uuid_rb, &net->fs_servers);
hlist_add_head_rcu(&server->proc_link, &net->fs_proc);
+added_dup:
write_seqlock(&net->fs_addr_lock);
alist = rcu_dereference_protected(server->addresses,
lockdep_is_held(&net->fs_addr_lock.lock));
@@ -199,13 +213,14 @@ exists:
}
/*
- * allocate a new server record
+ * Allocate a new server record and mark it active.
*/
-static struct afs_server *afs_alloc_server(struct afs_net *net,
+static struct afs_server *afs_alloc_server(struct afs_cell *cell,
const uuid_t *uuid,
struct afs_addr_list *alist)
{
struct afs_server *server;
+ struct afs_net *net = cell->net;
_enter("");
@@ -213,20 +228,21 @@ static struct afs_server *afs_alloc_server(struct afs_net *net,
if (!server)
goto enomem;
- atomic_set(&server->usage, 1);
+ atomic_set(&server->ref, 1);
+ atomic_set(&server->active, 1);
server->debug_id = atomic_inc_return(&afs_server_debug_id);
RCU_INIT_POINTER(server->addresses, alist);
server->addr_version = alist->version;
server->uuid = *uuid;
- server->update_at = ktime_get_real_seconds() + afs_server_update_delay;
rwlock_init(&server->fs_lock);
- INIT_HLIST_HEAD(&server->cb_volumes);
- rwlock_init(&server->cb_break_lock);
init_waitqueue_head(&server->probe_wq);
+ INIT_LIST_HEAD(&server->probe_link);
spin_lock_init(&server->probe_lock);
+ server->cell = cell;
+ server->rtt = UINT_MAX;
afs_inc_servers_outstanding(net);
- trace_afs_server(server, 1, afs_server_trace_alloc);
+ trace_afs_server(server, 1, 1, afs_server_trace_alloc);
_leave(" = %p", server);
return server;
@@ -264,7 +280,7 @@ static struct afs_addr_list *afs_vl_lookup_addrs(struct afs_cell *cell,
* Get or create a fileserver record.
*/
struct afs_server *afs_lookup_server(struct afs_cell *cell, struct key *key,
- const uuid_t *uuid)
+ const uuid_t *uuid, u32 addr_version)
{
struct afs_addr_list *alist;
struct afs_server *server, *candidate;
@@ -272,26 +288,34 @@ struct afs_server *afs_lookup_server(struct afs_cell *cell, struct key *key,
_enter("%p,%pU", cell->net, uuid);
server = afs_find_server_by_uuid(cell->net, uuid);
- if (server)
+ if (server) {
+ if (server->addr_version != addr_version)
+ set_bit(AFS_SERVER_FL_NEEDS_UPDATE, &server->flags);
return server;
+ }
alist = afs_vl_lookup_addrs(cell, key, uuid);
if (IS_ERR(alist))
return ERR_CAST(alist);
- candidate = afs_alloc_server(cell->net, uuid, alist);
+ candidate = afs_alloc_server(cell, uuid, alist);
if (!candidate) {
afs_put_addrlist(alist);
return ERR_PTR(-ENOMEM);
}
- server = afs_install_server(cell->net, candidate);
+ server = afs_install_server(cell, candidate);
if (server != candidate) {
afs_put_addrlist(alist);
kfree(candidate);
+ } else {
+ /* Immediately dispatch an asynchronous probe to each interface
+ * on the fileserver. This will make sure the repeat-probing
+ * service is started.
+ */
+ afs_fs_probe_fileserver(cell->net, server, key, true);
}
- _leave(" = %p{%d}", server, atomic_read(&server->usage));
return server;
}
@@ -327,9 +351,38 @@ void afs_servers_timer(struct timer_list *timer)
struct afs_server *afs_get_server(struct afs_server *server,
enum afs_server_trace reason)
{
- unsigned int u = atomic_inc_return(&server->usage);
+ unsigned int u = atomic_inc_return(&server->ref);
+
+ trace_afs_server(server, u, atomic_read(&server->active), reason);
+ return server;
+}
+
+/*
+ * Try to get a reference on a server object.
+ */
+static struct afs_server *afs_maybe_use_server(struct afs_server *server,
+ enum afs_server_trace reason)
+{
+ unsigned int r = atomic_fetch_add_unless(&server->ref, 1, 0);
+ unsigned int a;
- trace_afs_server(server, u, reason);
+ if (r == 0)
+ return NULL;
+
+ a = atomic_inc_return(&server->active);
+ trace_afs_server(server, r, a, reason);
+ return server;
+}
+
+/*
+ * Get an active count on a server object.
+ */
+struct afs_server *afs_use_server(struct afs_server *server, enum afs_server_trace reason)
+{
+ unsigned int r = atomic_inc_return(&server->ref);
+ unsigned int a = atomic_inc_return(&server->active);
+
+ trace_afs_server(server, r, a, reason);
return server;
}
@@ -344,32 +397,57 @@ void afs_put_server(struct afs_net *net, struct afs_server *server,
if (!server)
return;
- server->put_time = ktime_get_real_seconds();
-
- usage = atomic_dec_return(&server->usage);
+ usage = atomic_dec_return(&server->ref);
+ trace_afs_server(server, usage, atomic_read(&server->active), reason);
+ if (unlikely(usage == 0))
+ __afs_put_server(net, server);
+}
- trace_afs_server(server, usage, reason);
+/*
+ * Drop an active count on a server object without updating the last-unused
+ * time.
+ */
+void afs_unuse_server_notime(struct afs_net *net, struct afs_server *server,
+ enum afs_server_trace reason)
+{
+ if (server) {
+ unsigned int active = atomic_dec_return(&server->active);
- if (likely(usage > 0))
- return;
+ if (active == 0)
+ afs_set_server_timer(net, afs_server_gc_delay);
+ afs_put_server(net, server, reason);
+ }
+}
- afs_set_server_timer(net, afs_server_gc_delay);
+/*
+ * Drop an active count on a server object.
+ */
+void afs_unuse_server(struct afs_net *net, struct afs_server *server,
+ enum afs_server_trace reason)
+{
+ if (server) {
+ server->unuse_time = ktime_get_real_seconds();
+ afs_unuse_server_notime(net, server, reason);
+ }
}
static void afs_server_rcu(struct rcu_head *rcu)
{
struct afs_server *server = container_of(rcu, struct afs_server, rcu);
- trace_afs_server(server, atomic_read(&server->usage),
- afs_server_trace_free);
+ trace_afs_server(server, atomic_read(&server->ref),
+ atomic_read(&server->active), afs_server_trace_free);
afs_put_addrlist(rcu_access_pointer(server->addresses));
kfree(server);
}
-/*
- * destroy a dead server
- */
-static void afs_destroy_server(struct afs_net *net, struct afs_server *server)
+static void __afs_put_server(struct afs_net *net, struct afs_server *server)
+{
+ call_rcu(&server->rcu, afs_server_rcu);
+ afs_dec_servers_outstanding(net);
+}
+
+static void afs_give_up_callbacks(struct afs_net *net, struct afs_server *server)
{
struct afs_addr_list *alist = rcu_access_pointer(server->addresses);
struct afs_addr_cursor ac = {
@@ -378,19 +456,18 @@ static void afs_destroy_server(struct afs_net *net, struct afs_server *server)
.error = 0,
};
- trace_afs_server(server, atomic_read(&server->usage),
- afs_server_trace_give_up_cb);
+ afs_fs_give_up_all_callbacks(net, server, &ac, NULL);
+}
+/*
+ * destroy a dead server
+ */
+static void afs_destroy_server(struct afs_net *net, struct afs_server *server)
+{
if (test_bit(AFS_SERVER_FL_MAY_HAVE_CB, &server->flags))
- afs_fs_give_up_all_callbacks(net, server, &ac, NULL);
-
- wait_var_event(&server->probe_outstanding,
- atomic_read(&server->probe_outstanding) == 0);
+ afs_give_up_callbacks(net, server);
- trace_afs_server(server, atomic_read(&server->usage),
- afs_server_trace_destroy);
- call_rcu(&server->rcu, afs_server_rcu);
- afs_dec_servers_outstanding(net);
+ afs_put_server(net, server, afs_server_trace_destroy);
}
/*
@@ -398,32 +475,49 @@ static void afs_destroy_server(struct afs_net *net, struct afs_server *server)
*/
static void afs_gc_servers(struct afs_net *net, struct afs_server *gc_list)
{
- struct afs_server *server;
- bool deleted;
- int usage;
+ struct afs_server *server, *next, *prev;
+ int active;
while ((server = gc_list)) {
gc_list = server->gc_next;
write_seqlock(&net->fs_lock);
- usage = 1;
- deleted = atomic_try_cmpxchg(&server->usage, &usage, 0);
- trace_afs_server(server, usage, afs_server_trace_gc);
- if (deleted) {
- rb_erase(&server->uuid_rb, &net->fs_servers);
- hlist_del_rcu(&server->proc_link);
- }
- write_sequnlock(&net->fs_lock);
- if (deleted) {
- write_seqlock(&net->fs_addr_lock);
+ active = atomic_read(&server->active);
+ if (active == 0) {
+ trace_afs_server(server, atomic_read(&server->ref),
+ active, afs_server_trace_gc);
+ next = rcu_dereference_protected(
+ server->uuid_next, lockdep_is_held(&net->fs_lock.lock));
+ prev = server->uuid_prev;
+ if (!prev) {
+ /* The one at the front is in the tree */
+ if (!next) {
+ rb_erase(&server->uuid_rb, &net->fs_servers);
+ } else {
+ rb_replace_node_rcu(&server->uuid_rb,
+ &next->uuid_rb,
+ &net->fs_servers);
+ next->uuid_prev = NULL;
+ }
+ } else {
+ /* This server is not at the front */
+ rcu_assign_pointer(prev->uuid_next, next);
+ if (next)
+ next->uuid_prev = prev;
+ }
+
+ list_del(&server->probe_link);
+ hlist_del_rcu(&server->proc_link);
if (!hlist_unhashed(&server->addr4_link))
hlist_del_rcu(&server->addr4_link);
if (!hlist_unhashed(&server->addr6_link))
hlist_del_rcu(&server->addr6_link);
- write_sequnlock(&net->fs_addr_lock);
- afs_destroy_server(net, server);
}
+ write_sequnlock(&net->fs_lock);
+
+ if (active == 0)
+ afs_destroy_server(net, server);
}
}
@@ -452,15 +546,14 @@ void afs_manage_servers(struct work_struct *work)
for (cursor = rb_first(&net->fs_servers); cursor; cursor = rb_next(cursor)) {
struct afs_server *server =
rb_entry(cursor, struct afs_server, uuid_rb);
- int usage = atomic_read(&server->usage);
+ int active = atomic_read(&server->active);
- _debug("manage %pU %u", &server->uuid, usage);
+ _debug("manage %pU %u", &server->uuid, active);
- ASSERTCMP(usage, >=, 1);
- ASSERTIFCMP(purging, usage, ==, 1);
+ ASSERTIFCMP(purging, active, ==, 0);
- if (usage == 1) {
- time64_t expire_at = server->put_time;
+ if (active == 0) {
+ time64_t expire_at = server->unuse_time;
if (!test_bit(AFS_SERVER_FL_VL_FAIL, &server->flags) &&
!test_bit(AFS_SERVER_FL_NOT_FOUND, &server->flags))
@@ -512,11 +605,12 @@ void afs_purge_servers(struct afs_net *net)
_enter("");
if (del_timer_sync(&net->fs_timer))
- atomic_dec(&net->servers_outstanding);
+ afs_dec_servers_outstanding(net);
afs_queue_server_manager(net);
_debug("wait");
+ atomic_dec(&net->servers_outstanding);
wait_var_event(&net->servers_outstanding,
!atomic_read(&net->servers_outstanding));
_leave("");
@@ -525,26 +619,27 @@ void afs_purge_servers(struct afs_net *net)
/*
* Get an update for a server's address list.
*/
-static noinline bool afs_update_server_record(struct afs_fs_cursor *fc, struct afs_server *server)
+static noinline bool afs_update_server_record(struct afs_operation *op,
+ struct afs_server *server)
{
struct afs_addr_list *alist, *discard;
_enter("");
- trace_afs_server(server, atomic_read(&server->usage), afs_server_trace_update);
+ trace_afs_server(server, atomic_read(&server->ref), atomic_read(&server->active),
+ afs_server_trace_update);
- alist = afs_vl_lookup_addrs(fc->vnode->volume->cell, fc->key,
- &server->uuid);
+ alist = afs_vl_lookup_addrs(op->volume->cell, op->key, &server->uuid);
if (IS_ERR(alist)) {
if ((PTR_ERR(alist) == -ERESTARTSYS ||
PTR_ERR(alist) == -EINTR) &&
- !(fc->flags & AFS_FS_CURSOR_INTR) &&
+ (op->flags & AFS_OPERATION_UNINTR) &&
server->addresses) {
_leave(" = t [intr]");
return true;
}
- fc->error = PTR_ERR(alist);
- _leave(" = f [%d]", fc->error);
+ op->error = PTR_ERR(alist);
+ _leave(" = f [%d]", op->error);
return false;
}
@@ -558,7 +653,6 @@ static noinline bool afs_update_server_record(struct afs_fs_cursor *fc, struct a
write_unlock(&server->fs_lock);
}
- server->update_at = ktime_get_real_seconds() + afs_server_update_delay;
afs_put_addrlist(discard);
_leave(" = t");
return true;
@@ -567,10 +661,8 @@ static noinline bool afs_update_server_record(struct afs_fs_cursor *fc, struct a
/*
* See if a server's address list needs updating.
*/
-bool afs_check_server_record(struct afs_fs_cursor *fc, struct afs_server *server)
+bool afs_check_server_record(struct afs_operation *op, struct afs_server *server)
{
- time64_t now = ktime_get_real_seconds();
- long diff;
bool success;
int ret, retries = 0;
@@ -579,28 +671,29 @@ bool afs_check_server_record(struct afs_fs_cursor *fc, struct afs_server *server
ASSERT(server);
retry:
- diff = READ_ONCE(server->update_at) - now;
- if (diff > 0) {
- _leave(" = t [not now %ld]", diff);
- return true;
- }
+ if (test_bit(AFS_SERVER_FL_UPDATING, &server->flags))
+ goto wait;
+ if (test_bit(AFS_SERVER_FL_NEEDS_UPDATE, &server->flags))
+ goto update;
+ _leave(" = t [good]");
+ return true;
+update:
if (!test_and_set_bit_lock(AFS_SERVER_FL_UPDATING, &server->flags)) {
- success = afs_update_server_record(fc, server);
+ clear_bit(AFS_SERVER_FL_NEEDS_UPDATE, &server->flags);
+ success = afs_update_server_record(op, server);
clear_bit_unlock(AFS_SERVER_FL_UPDATING, &server->flags);
wake_up_bit(&server->flags, AFS_SERVER_FL_UPDATING);
_leave(" = %d", success);
return success;
}
+wait:
ret = wait_on_bit(&server->flags, AFS_SERVER_FL_UPDATING,
- TASK_INTERRUPTIBLE);
+ (op->flags & AFS_OPERATION_UNINTR) ?
+ TASK_UNINTERRUPTIBLE : TASK_INTERRUPTIBLE);
if (ret == -ERESTARTSYS) {
- if (!(fc->flags & AFS_FS_CURSOR_INTR) && server->addresses) {
- _leave(" = t [intr]");
- return true;
- }
- fc->error = ret;
+ op->error = ret;
_leave(" = f [intr]");
return false;
}
diff --git a/fs/afs/server_list.c b/fs/afs/server_list.c
index 888d91d195d9..ed9056703505 100644
--- a/fs/afs/server_list.c
+++ b/fs/afs/server_list.c
@@ -14,11 +14,9 @@ void afs_put_serverlist(struct afs_net *net, struct afs_server_list *slist)
int i;
if (slist && refcount_dec_and_test(&slist->usage)) {
- for (i = 0; i < slist->nr_servers; i++) {
- afs_put_cb_interest(net, slist->servers[i].cb_interest);
- afs_put_server(net, slist->servers[i].server,
- afs_server_trace_put_slist);
- }
+ for (i = 0; i < slist->nr_servers; i++)
+ afs_unuse_server(net, slist->servers[i].server,
+ afs_server_trace_put_slist);
kfree(slist);
}
}
@@ -46,12 +44,16 @@ struct afs_server_list *afs_alloc_server_list(struct afs_cell *cell,
refcount_set(&slist->usage, 1);
rwlock_init(&slist->lock);
+ for (i = 0; i < AFS_MAXTYPES; i++)
+ slist->vids[i] = vldb->vid[i];
+
/* Make sure a records exists for each server in the list. */
for (i = 0; i < vldb->nr_servers; i++) {
if (!(vldb->fs_mask[i] & type_mask))
continue;
- server = afs_lookup_server(cell, key, &vldb->fs_server[i]);
+ server = afs_lookup_server(cell, key, &vldb->fs_server[i],
+ vldb->addr_version[i]);
if (IS_ERR(server)) {
ret = PTR_ERR(server);
if (ret == -ENOENT ||
@@ -123,31 +125,5 @@ changed:
}
}
- /* Keep the old callback interest records where possible so that we
- * maintain callback interception.
- */
- i = 0;
- j = 0;
- while (i < old->nr_servers && j < new->nr_servers) {
- if (new->servers[j].server == old->servers[i].server) {
- struct afs_cb_interest *cbi = old->servers[i].cb_interest;
- if (cbi) {
- new->servers[j].cb_interest = cbi;
- refcount_inc(&cbi->usage);
- }
- i++;
- j++;
- continue;
- }
-
- if (new->servers[j].server < old->servers[i].server) {
- j++;
- continue;
- }
-
- i++;
- continue;
- }
-
return true;
}
diff --git a/fs/afs/super.c b/fs/afs/super.c
index dda7a9a66848..b552357b1d13 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -352,7 +352,9 @@ static int afs_validate_fc(struct fs_context *fc)
{
struct afs_fs_context *ctx = fc->fs_private;
struct afs_volume *volume;
+ struct afs_cell *cell;
struct key *key;
+ int ret;
if (!ctx->dyn_root) {
if (ctx->no_cell) {
@@ -365,6 +367,7 @@ static int afs_validate_fc(struct fs_context *fc)
return -EDESTADDRREQ;
}
+ reget_key:
/* We try to do the mount securely. */
key = afs_request_key(ctx->cell);
if (IS_ERR(key))
@@ -373,10 +376,26 @@ static int afs_validate_fc(struct fs_context *fc)
ctx->key = key;
if (ctx->volume) {
- afs_put_volume(ctx->cell, ctx->volume);
+ afs_put_volume(ctx->net, ctx->volume,
+ afs_volume_trace_put_validate_fc);
ctx->volume = NULL;
}
+ if (test_bit(AFS_CELL_FL_CHECK_ALIAS, &ctx->cell->flags)) {
+ ret = afs_cell_detect_alias(ctx->cell, key);
+ if (ret < 0)
+ return ret;
+ if (ret == 1) {
+ _debug("switch to alias");
+ key_put(ctx->key);
+ ctx->key = NULL;
+ cell = afs_get_cell(ctx->cell->alias_of);
+ afs_put_cell(ctx->net, ctx->cell);
+ ctx->cell = cell;
+ goto reget_key;
+ }
+ }
+
volume = afs_create_volume(ctx);
if (IS_ERR(volume))
return PTR_ERR(volume);
@@ -421,7 +440,6 @@ static int afs_set_super(struct super_block *sb, struct fs_context *fc)
static int afs_fill_super(struct super_block *sb, struct afs_fs_context *ctx)
{
struct afs_super_info *as = AFS_FS_S(sb);
- struct afs_iget_data iget_data;
struct inode *inode = NULL;
int ret;
@@ -446,13 +464,7 @@ static int afs_fill_super(struct super_block *sb, struct afs_fs_context *ctx)
} else {
sprintf(sb->s_id, "%llu", as->volume->vid);
afs_activate_volume(as->volume);
- iget_data.fid.vid = as->volume->vid;
- iget_data.fid.vnode = 1;
- iget_data.fid.vnode_hi = 0;
- iget_data.fid.unique = 1;
- iget_data.cb_v_break = as->volume->cb_v_break;
- iget_data.cb_s_break = 0;
- inode = afs_iget(sb, ctx->key, &iget_data, NULL, NULL, NULL);
+ inode = afs_root_iget(sb, ctx->key);
}
if (IS_ERR(inode))
@@ -473,6 +485,7 @@ static int afs_fill_super(struct super_block *sb, struct afs_fs_context *ctx)
goto error;
} else {
sb->s_d_op = &afs_fs_dentry_operations;
+ rcu_assign_pointer(as->volume->sb, sb);
}
_leave(" = 0");
@@ -496,7 +509,8 @@ static struct afs_super_info *afs_alloc_sbi(struct fs_context *fc)
as->dyn_root = true;
} else {
as->cell = afs_get_cell(ctx->cell);
- as->volume = __afs_get_volume(ctx->volume);
+ as->volume = afs_get_volume(ctx->volume,
+ afs_volume_trace_get_alloc_sbi);
}
}
return as;
@@ -505,8 +519,9 @@ static struct afs_super_info *afs_alloc_sbi(struct fs_context *fc)
static void afs_destroy_sbi(struct afs_super_info *as)
{
if (as) {
- afs_put_volume(as->cell, as->volume);
- afs_put_cell(afs_net(as->net_ns), as->cell);
+ struct afs_net *net = afs_net(as->net_ns);
+ afs_put_volume(net, as->volume, afs_volume_trace_put_destroy_sbi);
+ afs_put_cell(net, as->cell);
put_net(as->net_ns);
kfree(as);
}
@@ -515,7 +530,6 @@ static void afs_destroy_sbi(struct afs_super_info *as)
static void afs_kill_super(struct super_block *sb)
{
struct afs_super_info *as = AFS_FS_S(sb);
- struct afs_net *net = afs_net(as->net_ns);
if (as->dyn_root)
afs_dynroot_depopulate(sb);
@@ -524,7 +538,7 @@ static void afs_kill_super(struct super_block *sb)
* deactivating the superblock.
*/
if (as->volume)
- afs_clear_callback_interests(net, as->volume->servers);
+ rcu_assign_pointer(as->volume->sb, NULL);
kill_anon_super(sb);
if (as->volume)
afs_deactivate_volume(as->volume);
@@ -592,7 +606,7 @@ static void afs_free_fc(struct fs_context *fc)
struct afs_fs_context *ctx = fc->fs_private;
afs_destroy_sbi(fc->s_fs_info);
- afs_put_volume(ctx->cell, ctx->volume);
+ afs_put_volume(ctx->net, ctx->volume, afs_volume_trace_put_free_fc);
afs_put_cell(ctx->net, ctx->cell);
key_put(ctx->key);
kfree(ctx);
@@ -674,7 +688,6 @@ static struct inode *afs_alloc_inode(struct super_block *sb)
vnode->volume = NULL;
vnode->lock_key = NULL;
vnode->permit_cache = NULL;
- RCU_INIT_POINTER(vnode->cb_interest, NULL);
#ifdef CONFIG_AFS_FSCACHE
vnode->cache = NULL;
#endif
@@ -704,22 +717,38 @@ static void afs_destroy_inode(struct inode *inode)
_debug("DESTROY INODE %p", inode);
- ASSERTCMP(rcu_access_pointer(vnode->cb_interest), ==, NULL);
-
atomic_dec(&afs_count_active_inodes);
}
+static void afs_get_volume_status_success(struct afs_operation *op)
+{
+ struct afs_volume_status *vs = &op->volstatus.vs;
+ struct kstatfs *buf = op->volstatus.buf;
+
+ if (vs->max_quota == 0)
+ buf->f_blocks = vs->part_max_blocks;
+ else
+ buf->f_blocks = vs->max_quota;
+
+ if (buf->f_blocks > vs->blocks_in_use)
+ buf->f_bavail = buf->f_bfree =
+ buf->f_blocks - vs->blocks_in_use;
+}
+
+static const struct afs_operation_ops afs_get_volume_status_operation = {
+ .issue_afs_rpc = afs_fs_get_volume_status,
+ .issue_yfs_rpc = yfs_fs_get_volume_status,
+ .success = afs_get_volume_status_success,
+};
+
/*
* return information about an AFS volume
*/
static int afs_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct afs_super_info *as = AFS_FS_S(dentry->d_sb);
- struct afs_fs_cursor fc;
- struct afs_volume_status vs;
+ struct afs_operation *op;
struct afs_vnode *vnode = AFS_FS_I(d_inode(dentry));
- struct key *key;
- int ret;
buf->f_type = dentry->d_sb->s_magic;
buf->f_bsize = AFS_BLOCK_SIZE;
@@ -732,31 +761,13 @@ static int afs_statfs(struct dentry *dentry, struct kstatfs *buf)
return 0;
}
- key = afs_request_key(vnode->volume->cell);
- if (IS_ERR(key))
- return PTR_ERR(key);
+ op = afs_alloc_operation(NULL, as->volume);
+ if (IS_ERR(op))
+ return PTR_ERR(op);
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, key, true)) {
- fc.flags |= AFS_FS_CURSOR_NO_VSLEEP;
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(vnode);
- afs_fs_get_volume_status(&fc, &vs);
- }
-
- afs_check_for_remote_deletion(&fc, fc.vnode);
- ret = afs_end_vnode_operation(&fc);
- }
-
- key_put(key);
-
- if (ret == 0) {
- if (vs.max_quota == 0)
- buf->f_blocks = vs.part_max_blocks;
- else
- buf->f_blocks = vs.max_quota;
- buf->f_bavail = buf->f_bfree = buf->f_blocks - vs.blocks_in_use;
- }
-
- return ret;
+ afs_op_set_vnode(op, 0, vnode);
+ op->nr_files = 1;
+ op->volstatus.buf = buf;
+ op->ops = &afs_get_volume_status_operation;
+ return afs_do_sync_operation(op);
}
diff --git a/fs/afs/vl_alias.c b/fs/afs/vl_alias.c
new file mode 100644
index 000000000000..5082ef04e99c
--- /dev/null
+++ b/fs/afs/vl_alias.c
@@ -0,0 +1,383 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/* AFS cell alias detection
+ *
+ * Copyright (C) 2020 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ */
+
+#include <linux/slab.h>
+#include <linux/sched.h>
+#include <linux/namei.h>
+#include <keys/rxrpc-type.h>
+#include "internal.h"
+
+/*
+ * Sample a volume.
+ */
+static struct afs_volume *afs_sample_volume(struct afs_cell *cell, struct key *key,
+ const char *name, unsigned int namelen)
+{
+ struct afs_volume *volume;
+ struct afs_fs_context fc = {
+ .type = 0, /* Explicitly leave it to the VLDB */
+ .volnamesz = namelen,
+ .volname = name,
+ .net = cell->net,
+ .cell = cell,
+ .key = key, /* This might need to be something */
+ };
+
+ volume = afs_create_volume(&fc);
+ _leave(" = %p", volume);
+ return volume;
+}
+
+/*
+ * Compare two addresses.
+ */
+static int afs_compare_addrs(const struct sockaddr_rxrpc *srx_a,
+ const struct sockaddr_rxrpc *srx_b)
+{
+ short port_a, port_b;
+ int addr_a, addr_b, diff;
+
+ diff = (short)srx_a->transport_type - (short)srx_b->transport_type;
+ if (diff)
+ goto out;
+
+ switch (srx_a->transport_type) {
+ case AF_INET: {
+ const struct sockaddr_in *a = &srx_a->transport.sin;
+ const struct sockaddr_in *b = &srx_b->transport.sin;
+ addr_a = ntohl(a->sin_addr.s_addr);
+ addr_b = ntohl(b->sin_addr.s_addr);
+ diff = addr_a - addr_b;
+ if (diff == 0) {
+ port_a = ntohs(a->sin_port);
+ port_b = ntohs(b->sin_port);
+ diff = port_a - port_b;
+ }
+ break;
+ }
+
+ case AF_INET6: {
+ const struct sockaddr_in6 *a = &srx_a->transport.sin6;
+ const struct sockaddr_in6 *b = &srx_b->transport.sin6;
+ diff = memcmp(&a->sin6_addr, &b->sin6_addr, 16);
+ if (diff == 0) {
+ port_a = ntohs(a->sin6_port);
+ port_b = ntohs(b->sin6_port);
+ diff = port_a - port_b;
+ }
+ break;
+ }
+
+ default:
+ WARN_ON(1);
+ diff = 1;
+ }
+
+out:
+ return diff;
+}
+
+/*
+ * Compare the address lists of a pair of fileservers.
+ */
+static int afs_compare_fs_alists(const struct afs_server *server_a,
+ const struct afs_server *server_b)
+{
+ const struct afs_addr_list *la, *lb;
+ int a = 0, b = 0, addr_matches = 0;
+
+ la = rcu_dereference(server_a->addresses);
+ lb = rcu_dereference(server_b->addresses);
+
+ while (a < la->nr_addrs && b < lb->nr_addrs) {
+ const struct sockaddr_rxrpc *srx_a = &la->addrs[a];
+ const struct sockaddr_rxrpc *srx_b = &lb->addrs[b];
+ int diff = afs_compare_addrs(srx_a, srx_b);
+
+ if (diff < 0) {
+ a++;
+ } else if (diff > 0) {
+ b++;
+ } else {
+ addr_matches++;
+ a++;
+ b++;
+ }
+ }
+
+ return addr_matches;
+}
+
+/*
+ * Compare the fileserver lists of two volumes. The server lists are sorted in
+ * order of ascending UUID.
+ */
+static int afs_compare_volume_slists(const struct afs_volume *vol_a,
+ const struct afs_volume *vol_b)
+{
+ const struct afs_server_list *la, *lb;
+ int i, a = 0, b = 0, uuid_matches = 0, addr_matches = 0;
+
+ la = rcu_dereference(vol_a->servers);
+ lb = rcu_dereference(vol_b->servers);
+
+ for (i = 0; i < AFS_MAXTYPES; i++)
+ if (la->vids[i] != lb->vids[i])
+ return 0;
+
+ while (a < la->nr_servers && b < lb->nr_servers) {
+ const struct afs_server *server_a = la->servers[a].server;
+ const struct afs_server *server_b = lb->servers[b].server;
+ int diff = memcmp(&server_a->uuid, &server_b->uuid, sizeof(uuid_t));
+
+ if (diff < 0) {
+ a++;
+ } else if (diff > 0) {
+ b++;
+ } else {
+ uuid_matches++;
+ addr_matches += afs_compare_fs_alists(server_a, server_b);
+ a++;
+ b++;
+ }
+ }
+
+ _leave(" = %d [um %d]", addr_matches, uuid_matches);
+ return addr_matches;
+}
+
+/*
+ * Compare root.cell volumes.
+ */
+static int afs_compare_cell_roots(struct afs_cell *cell)
+{
+ struct afs_cell *p;
+
+ _enter("");
+
+ rcu_read_lock();
+
+ hlist_for_each_entry_rcu(p, &cell->net->proc_cells, proc_link) {
+ if (p == cell || p->alias_of)
+ continue;
+ if (!p->root_volume)
+ continue; /* Ignore cells that don't have a root.cell volume. */
+
+ if (afs_compare_volume_slists(cell->root_volume, p->root_volume) != 0)
+ goto is_alias;
+ }
+
+ rcu_read_unlock();
+ _leave(" = 0");
+ return 0;
+
+is_alias:
+ rcu_read_unlock();
+ cell->alias_of = afs_get_cell(p);
+ return 1;
+}
+
+/*
+ * Query the new cell for a volume from a cell we're already using.
+ */
+static int afs_query_for_alias_one(struct afs_cell *cell, struct key *key,
+ struct afs_cell *p)
+{
+ struct afs_volume *volume, *pvol = NULL;
+ int ret;
+
+ /* Arbitrarily pick a volume from the list. */
+ read_seqlock_excl(&p->volume_lock);
+ if (!RB_EMPTY_ROOT(&p->volumes))
+ pvol = afs_get_volume(rb_entry(p->volumes.rb_node,
+ struct afs_volume, cell_node),
+ afs_volume_trace_get_query_alias);
+ read_sequnlock_excl(&p->volume_lock);
+ if (!pvol)
+ return 0;
+
+ _enter("%s:%s", cell->name, pvol->name);
+
+ /* And see if it's in the new cell. */
+ volume = afs_sample_volume(cell, key, pvol->name, pvol->name_len);
+ if (IS_ERR(volume)) {
+ afs_put_volume(cell->net, pvol, afs_volume_trace_put_query_alias);
+ if (PTR_ERR(volume) != -ENOMEDIUM)
+ return PTR_ERR(volume);
+ /* That volume is not in the new cell, so not an alias */
+ return 0;
+ }
+
+ /* The new cell has a like-named volume also - compare volume ID,
+ * server and address lists.
+ */
+ ret = 0;
+ if (pvol->vid == volume->vid) {
+ rcu_read_lock();
+ if (afs_compare_volume_slists(volume, pvol))
+ ret = 1;
+ rcu_read_unlock();
+ }
+
+ afs_put_volume(cell->net, volume, afs_volume_trace_put_query_alias);
+ afs_put_volume(cell->net, pvol, afs_volume_trace_put_query_alias);
+ return ret;
+}
+
+/*
+ * Query the new cell for volumes we know exist in cells we're already using.
+ */
+static int afs_query_for_alias(struct afs_cell *cell, struct key *key)
+{
+ struct afs_cell *p;
+
+ _enter("%s", cell->name);
+
+ if (mutex_lock_interruptible(&cell->net->proc_cells_lock) < 0)
+ return -ERESTARTSYS;
+
+ hlist_for_each_entry(p, &cell->net->proc_cells, proc_link) {
+ if (p == cell || p->alias_of)
+ continue;
+ if (RB_EMPTY_ROOT(&p->volumes))
+ continue;
+ if (p->root_volume)
+ continue; /* Ignore cells that have a root.cell volume. */
+ afs_get_cell(p);
+ mutex_unlock(&cell->net->proc_cells_lock);
+
+ if (afs_query_for_alias_one(cell, key, p) != 0)
+ goto is_alias;
+
+ if (mutex_lock_interruptible(&cell->net->proc_cells_lock) < 0) {
+ afs_put_cell(cell->net, p);
+ return -ERESTARTSYS;
+ }
+
+ afs_put_cell(cell->net, p);
+ }
+
+ mutex_unlock(&cell->net->proc_cells_lock);
+ _leave(" = 0");
+ return 0;
+
+is_alias:
+ cell->alias_of = p; /* Transfer our ref */
+ return 1;
+}
+
+/*
+ * Look up a VLDB record for a volume.
+ */
+static char *afs_vl_get_cell_name(struct afs_cell *cell, struct key *key)
+{
+ struct afs_vl_cursor vc;
+ char *cell_name = ERR_PTR(-EDESTADDRREQ);
+ bool skipped = false, not_skipped = false;
+ int ret;
+
+ if (!afs_begin_vlserver_operation(&vc, cell, key))
+ return ERR_PTR(-ERESTARTSYS);
+
+ while (afs_select_vlserver(&vc)) {
+ if (!test_bit(AFS_VLSERVER_FL_IS_YFS, &vc.server->flags)) {
+ vc.ac.error = -EOPNOTSUPP;
+ skipped = true;
+ continue;
+ }
+ not_skipped = true;
+ cell_name = afs_yfsvl_get_cell_name(&vc);
+ }
+
+ ret = afs_end_vlserver_operation(&vc);
+ if (skipped && !not_skipped)
+ ret = -EOPNOTSUPP;
+ return ret < 0 ? ERR_PTR(ret) : cell_name;
+}
+
+static int yfs_check_canonical_cell_name(struct afs_cell *cell, struct key *key)
+{
+ struct afs_cell *master;
+ char *cell_name;
+
+ cell_name = afs_vl_get_cell_name(cell, key);
+ if (IS_ERR(cell_name))
+ return PTR_ERR(cell_name);
+
+ if (strcmp(cell_name, cell->name) == 0) {
+ kfree(cell_name);
+ return 0;
+ }
+
+ master = afs_lookup_cell(cell->net, cell_name, strlen(cell_name),
+ NULL, false);
+ kfree(cell_name);
+ if (IS_ERR(master))
+ return PTR_ERR(master);
+
+ cell->alias_of = master; /* Transfer our ref */
+ return 1;
+}
+
+static int afs_do_cell_detect_alias(struct afs_cell *cell, struct key *key)
+{
+ struct afs_volume *root_volume;
+ int ret;
+
+ _enter("%s", cell->name);
+
+ ret = yfs_check_canonical_cell_name(cell, key);
+ if (ret != -EOPNOTSUPP)
+ return ret;
+
+ /* Try and get the root.cell volume for comparison with other cells */
+ root_volume = afs_sample_volume(cell, key, "root.cell", 9);
+ if (!IS_ERR(root_volume)) {
+ cell->root_volume = root_volume;
+ return afs_compare_cell_roots(cell);
+ }
+
+ if (PTR_ERR(root_volume) != -ENOMEDIUM)
+ return PTR_ERR(root_volume);
+
+ /* Okay, this cell doesn't have an root.cell volume. We need to
+ * locate some other random volume and use that to check.
+ */
+ return afs_query_for_alias(cell, key);
+}
+
+/*
+ * Check to see if a new cell is an alias of a cell we already have. At this
+ * point we have the cell's volume server list.
+ *
+ * Returns 0 if we didn't detect an alias, 1 if we found an alias and an error
+ * if we had problems gathering the data required. In the case the we did
+ * detect an alias, cell->alias_of is set to point to the assumed master.
+ */
+int afs_cell_detect_alias(struct afs_cell *cell, struct key *key)
+{
+ struct afs_net *net = cell->net;
+ int ret;
+
+ if (mutex_lock_interruptible(&net->cells_alias_lock) < 0)
+ return -ERESTARTSYS;
+
+ if (test_bit(AFS_CELL_FL_CHECK_ALIAS, &cell->flags)) {
+ ret = afs_do_cell_detect_alias(cell, key);
+ if (ret >= 0)
+ clear_bit_unlock(AFS_CELL_FL_CHECK_ALIAS, &cell->flags);
+ } else {
+ ret = cell->alias_of ? 1 : 0;
+ }
+
+ mutex_unlock(&net->cells_alias_lock);
+
+ if (ret == 1)
+ pr_notice("kAFS: Cell %s is an alias of %s\n",
+ cell->name, cell->alias_of->name);
+ return ret;
+}
diff --git a/fs/afs/vl_probe.c b/fs/afs/vl_probe.c
index 858498cc1b05..e3aa013c2177 100644
--- a/fs/afs/vl_probe.c
+++ b/fs/afs/vl_probe.c
@@ -31,10 +31,9 @@ void afs_vlserver_probe_result(struct afs_call *call)
struct afs_addr_list *alist = call->alist;
struct afs_vlserver *server = call->vlserver;
unsigned int server_index = call->server_index;
+ unsigned int rtt_us = 0;
unsigned int index = call->addr_ix;
- unsigned int rtt = UINT_MAX;
bool have_result = false;
- u64 _rtt;
int ret = call->error;
_enter("%s,%u,%u,%d,%d", server->name, server_index, index, ret, call->abort_code);
@@ -93,15 +92,9 @@ responded:
}
}
- /* Get the RTT and scale it to fit into a 32-bit value that represents
- * over a minute of time so that we can access it with one instruction
- * on a 32-bit system.
- */
- _rtt = rxrpc_kernel_get_rtt(call->net->socket, call->rxcall);
- _rtt /= 64;
- rtt = (_rtt > UINT_MAX) ? UINT_MAX : _rtt;
- if (rtt < server->probe.rtt) {
- server->probe.rtt = rtt;
+ rtt_us = rxrpc_kernel_get_srtt(call->net->socket, call->rxcall);
+ if (rtt_us < server->probe.rtt) {
+ server->probe.rtt = rtt_us;
alist->preferred = index;
have_result = true;
}
@@ -113,8 +106,7 @@ out:
spin_unlock(&server->probe_lock);
_debug("probe [%u][%u] %pISpc rtt=%u ret=%d",
- server_index, index, &alist->addrs[index].transport,
- (unsigned int)rtt, ret);
+ server_index, index, &alist->addrs[index].transport, rtt_us, ret);
have_result |= afs_vl_probe_done(server);
if (have_result) {
diff --git a/fs/afs/vl_rotate.c b/fs/afs/vl_rotate.c
index 9a5ce9687779..f405ca8b240a 100644
--- a/fs/afs/vl_rotate.c
+++ b/fs/afs/vl_rotate.c
@@ -151,6 +151,10 @@ bool afs_select_vlserver(struct afs_vl_cursor *vc)
vc->error = error;
vc->flags |= AFS_VL_CURSOR_RETRY;
goto next_server;
+
+ case -EOPNOTSUPP:
+ _debug("notsupp");
+ goto next_server;
}
restart_from_beginning:
@@ -302,8 +306,8 @@ static void afs_vl_dump_edestaddrreq(const struct afs_vl_cursor *vc)
pr_notice("VC: - nr=%u/%u/%u pf=%u\n",
a->nr_ipv4, a->nr_addrs, a->max_addrs,
a->preferred);
- pr_notice("VC: - pr=%lx R=%lx F=%lx\n",
- a->probed, a->responded, a->failed);
+ pr_notice("VC: - R=%lx F=%lx\n",
+ a->responded, a->failed);
if (a == vc->ac.alist)
pr_notice("VC: - current\n");
}
diff --git a/fs/afs/vlclient.c b/fs/afs/vlclient.c
index 516e9a3bb5b4..fd82850cd424 100644
--- a/fs/afs/vlclient.c
+++ b/fs/afs/vlclient.c
@@ -82,6 +82,7 @@ static int afs_deliver_vl_get_entry_by_name_u(struct afs_call *call)
for (j = 0; j < 6; j++)
uuid->node[j] = (u8)ntohl(xdr->node[j]);
+ entry->addr_version[n] = ntohl(uvldb->serverUnique[i]);
entry->nr_servers++;
}
@@ -447,8 +448,7 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call)
call->count2 = ntohl(*bp); /* Type or next count */
if (call->count > YFS_MAXENDPOINTS)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_fsendpt_num);
+ return afs_protocol_error(call, afs_eproto_yvl_fsendpt_num);
alist = afs_alloc_addrlist(call->count, FS_SERVICE, AFS_FS_PORT);
if (!alist)
@@ -468,8 +468,7 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call)
size = sizeof(__be32) * (1 + 4 + 1);
break;
default:
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_fsendpt_type);
+ return afs_protocol_error(call, afs_eproto_yvl_fsendpt_type);
}
size += sizeof(__be32);
@@ -487,21 +486,20 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call)
switch (call->count2) {
case YFS_ENDPOINT_IPV4:
if (ntohl(bp[0]) != sizeof(__be32) * 2)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_fsendpt4_len);
+ return afs_protocol_error(
+ call, afs_eproto_yvl_fsendpt4_len);
afs_merge_fs_addr4(alist, bp[1], ntohl(bp[2]));
bp += 3;
break;
case YFS_ENDPOINT_IPV6:
if (ntohl(bp[0]) != sizeof(__be32) * 5)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_fsendpt6_len);
+ return afs_protocol_error(
+ call, afs_eproto_yvl_fsendpt6_len);
afs_merge_fs_addr6(alist, bp + 1, ntohl(bp[5]));
bp += 6;
break;
default:
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_fsendpt_type);
+ return afs_protocol_error(call, afs_eproto_yvl_fsendpt_type);
}
/* Got either the type of the next entry or the count of
@@ -519,8 +517,7 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call)
if (!call->count)
goto end;
if (call->count > YFS_MAXENDPOINTS)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_vlendpt_type);
+ return afs_protocol_error(call, afs_eproto_yvl_vlendpt_type);
afs_extract_to_buf(call, 1 * sizeof(__be32));
call->unmarshall = 3;
@@ -547,8 +544,7 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call)
size = sizeof(__be32) * (1 + 4 + 1);
break;
default:
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_vlendpt_type);
+ return afs_protocol_error(call, afs_eproto_yvl_vlendpt_type);
}
if (call->count > 1)
@@ -566,19 +562,18 @@ static int afs_deliver_yfsvl_get_endpoints(struct afs_call *call)
switch (call->count2) {
case YFS_ENDPOINT_IPV4:
if (ntohl(bp[0]) != sizeof(__be32) * 2)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_vlendpt4_len);
+ return afs_protocol_error(
+ call, afs_eproto_yvl_vlendpt4_len);
bp += 3;
break;
case YFS_ENDPOINT_IPV6:
if (ntohl(bp[0]) != sizeof(__be32) * 5)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_vlendpt6_len);
+ return afs_protocol_error(
+ call, afs_eproto_yvl_vlendpt6_len);
bp += 6;
break;
default:
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_yvl_vlendpt_type);
+ return afs_protocol_error(call, afs_eproto_yvl_vlendpt_type);
}
/* Got either the type of the next entry or the count of
@@ -650,3 +645,114 @@ struct afs_addr_list *afs_yfsvl_get_endpoints(struct afs_vl_cursor *vc,
afs_make_call(&vc->ac, call, GFP_KERNEL);
return (struct afs_addr_list *)afs_wait_for_call_to_complete(call, &vc->ac);
}
+
+/*
+ * Deliver reply data to a YFSVL.GetCellName operation.
+ */
+static int afs_deliver_yfsvl_get_cell_name(struct afs_call *call)
+{
+ char *cell_name;
+ u32 namesz, paddedsz;
+ int ret;
+
+ _enter("{%u,%zu/%u}",
+ call->unmarshall, iov_iter_count(call->iter), call->count);
+
+ switch (call->unmarshall) {
+ case 0:
+ afs_extract_to_tmp(call);
+ call->unmarshall++;
+
+ /* Fall through - and extract the cell name length */
+ case 1:
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ namesz = ntohl(call->tmp);
+ if (namesz > AFS_MAXCELLNAME)
+ return afs_protocol_error(call, afs_eproto_cellname_len);
+ paddedsz = (namesz + 3) & ~3;
+ call->count = namesz;
+ call->count2 = paddedsz - namesz;
+
+ cell_name = kmalloc(namesz + 1, GFP_KERNEL);
+ if (!cell_name)
+ return -ENOMEM;
+ cell_name[namesz] = 0;
+ call->ret_str = cell_name;
+
+ afs_extract_begin(call, cell_name, namesz);
+ call->unmarshall++;
+
+ /* Fall through - and extract cell name */
+ case 2:
+ ret = afs_extract_data(call, true);
+ if (ret < 0)
+ return ret;
+
+ afs_extract_discard(call, call->count2);
+ call->unmarshall++;
+
+ /* Fall through - and extract padding */
+ case 3:
+ ret = afs_extract_data(call, false);
+ if (ret < 0)
+ return ret;
+
+ call->unmarshall++;
+ break;
+ }
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+static void afs_destroy_yfsvl_get_cell_name(struct afs_call *call)
+{
+ kfree(call->ret_str);
+ afs_flat_call_destructor(call);
+}
+
+/*
+ * VL.GetCapabilities operation type
+ */
+static const struct afs_call_type afs_YFSVLGetCellName = {
+ .name = "YFSVL.GetCellName",
+ .op = afs_YFSVL_GetCellName,
+ .deliver = afs_deliver_yfsvl_get_cell_name,
+ .destructor = afs_destroy_yfsvl_get_cell_name,
+};
+
+/*
+ * Probe a volume server for the capabilities that it supports. This can
+ * return up to 196 words.
+ *
+ * We use this to probe for service upgrade to determine what the server at the
+ * other end supports.
+ */
+char *afs_yfsvl_get_cell_name(struct afs_vl_cursor *vc)
+{
+ struct afs_call *call;
+ struct afs_net *net = vc->cell->net;
+ __be32 *bp;
+
+ _enter("");
+
+ call = afs_alloc_flat_call(net, &afs_YFSVLGetCellName, 1 * 4, 0);
+ if (!call)
+ return ERR_PTR(-ENOMEM);
+
+ call->key = vc->key;
+ call->ret_str = NULL;
+ call->max_lifespan = AFS_VL_MAX_LIFESPAN;
+
+ /* marshall the parameters */
+ bp = call->request;
+ *bp++ = htonl(YVLGETCELLNAME);
+
+ /* Can't take a ref on server */
+ trace_afs_make_vl_call(call);
+ afs_make_call(&vc->ac, call, GFP_KERNEL);
+ return (char *)afs_wait_for_call_to_complete(call, &vc->ac);
+}
diff --git a/fs/afs/volume.c b/fs/afs/volume.c
index 92ca5e27573b..9bc0509e3634 100644
--- a/fs/afs/volume.c
+++ b/fs/afs/volume.c
@@ -13,6 +13,56 @@ unsigned __read_mostly afs_volume_gc_delay = 10;
unsigned __read_mostly afs_volume_record_life = 60 * 60;
/*
+ * Insert a volume into a cell. If there's an existing volume record, that is
+ * returned instead with a ref held.
+ */
+static struct afs_volume *afs_insert_volume_into_cell(struct afs_cell *cell,
+ struct afs_volume *volume)
+{
+ struct afs_volume *p;
+ struct rb_node *parent = NULL, **pp;
+
+ write_seqlock(&cell->volume_lock);
+
+ pp = &cell->volumes.rb_node;
+ while (*pp) {
+ parent = *pp;
+ p = rb_entry(parent, struct afs_volume, cell_node);
+ if (p->vid < volume->vid) {
+ pp = &(*pp)->rb_left;
+ } else if (p->vid > volume->vid) {
+ pp = &(*pp)->rb_right;
+ } else {
+ volume = afs_get_volume(p, afs_volume_trace_get_cell_insert);
+ goto found;
+ }
+ }
+
+ rb_link_node_rcu(&volume->cell_node, parent, pp);
+ rb_insert_color(&volume->cell_node, &cell->volumes);
+ hlist_add_head_rcu(&volume->proc_link, &cell->proc_volumes);
+
+found:
+ write_sequnlock(&cell->volume_lock);
+ return volume;
+
+}
+
+static void afs_remove_volume_from_cell(struct afs_volume *volume)
+{
+ struct afs_cell *cell = volume->cell;
+
+ if (!hlist_unhashed(&volume->proc_link)) {
+ trace_afs_volume(volume->vid, atomic_read(&volume->usage),
+ afs_volume_trace_remove);
+ write_seqlock(&cell->volume_lock);
+ hlist_del_rcu(&volume->proc_link);
+ rb_erase(&volume->cell_node, &cell->volumes);
+ write_sequnlock(&cell->volume_lock);
+ }
+}
+
+/*
* Allocate a volume record and load it up from a vldb record.
*/
static struct afs_volume *afs_alloc_volume(struct afs_fs_context *params,
@@ -39,7 +89,7 @@ static struct afs_volume *afs_alloc_volume(struct afs_fs_context *params,
volume->name_len = vldb->name_len;
atomic_set(&volume->usage, 1);
- INIT_LIST_HEAD(&volume->proc_link);
+ INIT_HLIST_NODE(&volume->proc_link);
rwlock_init(&volume->servers_lock);
rwlock_init(&volume->cb_v_break_lock);
memcpy(volume->name, vldb->name, vldb->name_len + 1);
@@ -51,7 +101,8 @@ static struct afs_volume *afs_alloc_volume(struct afs_fs_context *params,
}
refcount_set(&slist->usage, 1);
- volume->servers = slist;
+ rcu_assign_pointer(volume->servers, slist);
+ trace_afs_volume(volume->vid, 1, afs_volume_trace_alloc);
return volume;
error_1:
@@ -62,6 +113,25 @@ error_0:
}
/*
+ * Look up or allocate a volume record.
+ */
+static struct afs_volume *afs_lookup_volume(struct afs_fs_context *params,
+ struct afs_vldb_entry *vldb,
+ unsigned long type_mask)
+{
+ struct afs_volume *candidate, *volume;
+
+ candidate = afs_alloc_volume(params, vldb, type_mask);
+ if (IS_ERR(candidate))
+ return candidate;
+
+ volume = afs_insert_volume_into_cell(params->cell, candidate);
+ if (volume != candidate)
+ afs_put_volume(params->net, candidate, afs_volume_trace_put_cell_dup);
+ return volume;
+}
+
+/*
* Look up a VLDB record for a volume.
*/
static struct afs_vldb_entry *afs_vl_lookup_vldb(struct afs_cell *cell,
@@ -138,7 +208,7 @@ struct afs_volume *afs_create_volume(struct afs_fs_context *params)
}
type_mask = 1UL << params->type;
- volume = afs_alloc_volume(params, vldb, type_mask);
+ volume = afs_lookup_volume(params, vldb, type_mask);
error:
kfree(vldb);
@@ -156,23 +226,42 @@ static void afs_destroy_volume(struct afs_net *net, struct afs_volume *volume)
ASSERTCMP(volume->cache, ==, NULL);
#endif
- afs_put_serverlist(net, volume->servers);
+ afs_remove_volume_from_cell(volume);
+ afs_put_serverlist(net, rcu_access_pointer(volume->servers));
afs_put_cell(net, volume->cell);
- kfree(volume);
+ trace_afs_volume(volume->vid, atomic_read(&volume->usage),
+ afs_volume_trace_free);
+ kfree_rcu(volume, rcu);
_leave(" [destroyed]");
}
/*
- * Drop a reference on a volume record.
+ * Get a reference on a volume record.
*/
-void afs_put_volume(struct afs_cell *cell, struct afs_volume *volume)
+struct afs_volume *afs_get_volume(struct afs_volume *volume,
+ enum afs_volume_trace reason)
{
if (volume) {
- _enter("%s", volume->name);
+ int u = atomic_inc_return(&volume->usage);
+ trace_afs_volume(volume->vid, u, reason);
+ }
+ return volume;
+}
+
- if (atomic_dec_and_test(&volume->usage))
- afs_destroy_volume(cell->net, volume);
+/*
+ * Drop a reference on a volume record.
+ */
+void afs_put_volume(struct afs_net *net, struct afs_volume *volume,
+ enum afs_volume_trace reason)
+{
+ if (volume) {
+ afs_volid_t vid = volume->vid;
+ int u = atomic_dec_return(&volume->usage);
+ trace_afs_volume(vid, u, reason);
+ if (u == 0)
+ afs_destroy_volume(net, volume);
}
}
@@ -188,10 +277,6 @@ void afs_activate_volume(struct afs_volume *volume)
NULL, 0,
volume, 0, true);
#endif
-
- write_lock(&volume->cell->proc_lock);
- list_add_tail(&volume->proc_link, &volume->cell->proc_volumes);
- write_unlock(&volume->cell->proc_lock);
}
/*
@@ -201,10 +286,6 @@ void afs_deactivate_volume(struct afs_volume *volume)
{
_enter("%s", volume->name);
- write_lock(&volume->cell->proc_lock);
- list_del_init(&volume->proc_link);
- write_unlock(&volume->cell->proc_lock);
-
#ifdef CONFIG_AFS_FSCACHE
fscache_relinquish_cookie(volume->cache, NULL,
test_bit(AFS_VOLUME_DELETED, &volume->flags));
@@ -256,17 +337,17 @@ static int afs_update_volume_status(struct afs_volume *volume, struct key *key)
write_lock(&volume->servers_lock);
discard = new;
- old = volume->servers;
+ old = rcu_dereference_protected(volume->servers,
+ lockdep_is_held(&volume->servers_lock));
if (afs_annotate_server_list(new, old)) {
new->seq = volume->servers_seq + 1;
- volume->servers = new;
+ rcu_assign_pointer(volume->servers, new);
smp_wmb();
volume->servers_seq++;
discard = old;
}
volume->update_at = ktime_get_real_seconds() + afs_volume_record_life;
- clear_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags);
write_unlock(&volume->servers_lock);
ret = 0;
@@ -281,25 +362,27 @@ error:
/*
* Make sure the volume record is up to date.
*/
-int afs_check_volume_status(struct afs_volume *volume, struct key *key)
+int afs_check_volume_status(struct afs_volume *volume, struct afs_operation *op)
{
- time64_t now = ktime_get_real_seconds();
int ret, retries = 0;
_enter("");
- if (volume->update_at <= now)
- set_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags);
-
retry:
- if (!test_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags) &&
- !test_bit(AFS_VOLUME_WAIT, &volume->flags)) {
- _leave(" = 0");
- return 0;
- }
-
+ if (test_bit(AFS_VOLUME_WAIT, &volume->flags))
+ goto wait;
+ if (volume->update_at <= ktime_get_real_seconds() ||
+ test_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags))
+ goto update;
+ _leave(" = 0");
+ return 0;
+
+update:
if (!test_and_set_bit_lock(AFS_VOLUME_UPDATING, &volume->flags)) {
- ret = afs_update_volume_status(volume, key);
+ clear_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags);
+ ret = afs_update_volume_status(volume, op->key);
+ if (ret < 0)
+ set_bit(AFS_VOLUME_NEEDS_UPDATE, &volume->flags);
clear_bit_unlock(AFS_VOLUME_WAIT, &volume->flags);
clear_bit_unlock(AFS_VOLUME_UPDATING, &volume->flags);
wake_up_bit(&volume->flags, AFS_VOLUME_WAIT);
@@ -307,12 +390,15 @@ retry:
return ret;
}
+wait:
if (!test_bit(AFS_VOLUME_WAIT, &volume->flags)) {
_leave(" = 0 [no wait]");
return 0;
}
- ret = wait_on_bit(&volume->flags, AFS_VOLUME_WAIT, TASK_INTERRUPTIBLE);
+ ret = wait_on_bit(&volume->flags, AFS_VOLUME_WAIT,
+ (op->flags & AFS_OPERATION_UNINTR) ?
+ TASK_UNINTERRUPTIBLE : TASK_INTERRUPTIBLE);
if (ret == -ERESTARTSYS) {
_leave(" = %d", ret);
return ret;
diff --git a/fs/afs/write.c b/fs/afs/write.c
index cb76566763db..7437806332d9 100644
--- a/fs/afs/write.c
+++ b/fs/afs/write.c
@@ -194,11 +194,11 @@ int afs_write_end(struct file *file, struct address_space *mapping,
i_size = i_size_read(&vnode->vfs_inode);
if (maybe_i_size > i_size) {
- spin_lock(&vnode->wb_lock);
+ write_seqlock(&vnode->cb_lock);
i_size = i_size_read(&vnode->vfs_inode);
if (maybe_i_size > i_size)
i_size_write(&vnode->vfs_inode, maybe_i_size);
- spin_unlock(&vnode->wb_lock);
+ write_sequnlock(&vnode->cb_lock);
}
if (!PageUptodate(page)) {
@@ -349,82 +349,113 @@ static void afs_pages_written_back(struct afs_vnode *vnode,
}
/*
- * write to a file
+ * Find a key to use for the writeback. We cached the keys used to author the
+ * writes on the vnode. *_wbk will contain the last writeback key used or NULL
+ * and we need to start from there if it's set.
*/
-static int afs_store_data(struct address_space *mapping,
- pgoff_t first, pgoff_t last,
- unsigned offset, unsigned to)
+static int afs_get_writeback_key(struct afs_vnode *vnode,
+ struct afs_wb_key **_wbk)
{
- struct afs_vnode *vnode = AFS_FS_I(mapping->host);
- struct afs_fs_cursor fc;
- struct afs_status_cb *scb;
struct afs_wb_key *wbk = NULL;
struct list_head *p;
int ret = -ENOKEY, ret2;
- _enter("%s{%llx:%llu.%u},%lx,%lx,%x,%x",
- vnode->volume->name,
- vnode->fid.vid,
- vnode->fid.vnode,
- vnode->fid.unique,
- first, last, offset, to);
-
- scb = kzalloc(sizeof(struct afs_status_cb), GFP_NOFS);
- if (!scb)
- return -ENOMEM;
-
spin_lock(&vnode->wb_lock);
- p = vnode->wb_keys.next;
+ if (*_wbk)
+ p = (*_wbk)->vnode_link.next;
+ else
+ p = vnode->wb_keys.next;
- /* Iterate through the list looking for a valid key to use. */
-try_next_key:
while (p != &vnode->wb_keys) {
wbk = list_entry(p, struct afs_wb_key, vnode_link);
_debug("wbk %u", key_serial(wbk->key));
ret2 = key_validate(wbk->key);
- if (ret2 == 0)
- goto found_key;
+ if (ret2 == 0) {
+ refcount_inc(&wbk->usage);
+ _debug("USE WB KEY %u", key_serial(wbk->key));
+ break;
+ }
+
+ wbk = NULL;
if (ret == -ENOKEY)
ret = ret2;
p = p->next;
}
spin_unlock(&vnode->wb_lock);
- afs_put_wb_key(wbk);
- kfree(scb);
- _leave(" = %d [no keys]", ret);
- return ret;
+ if (*_wbk)
+ afs_put_wb_key(*_wbk);
+ *_wbk = wbk;
+ return 0;
+}
-found_key:
- refcount_inc(&wbk->usage);
- spin_unlock(&vnode->wb_lock);
+static void afs_store_data_success(struct afs_operation *op)
+{
+ struct afs_vnode *vnode = op->file[0].vnode;
- _debug("USE WB KEY %u", key_serial(wbk->key));
+ op->ctime = op->file[0].scb.status.mtime_client;
+ afs_vnode_commit_status(op, &op->file[0]);
+ if (op->error == 0) {
+ afs_pages_written_back(vnode, op->store.first, op->store.last);
+ afs_stat_v(vnode, n_stores);
+ atomic_long_add((op->store.last * PAGE_SIZE + op->store.last_to) -
+ (op->store.first * PAGE_SIZE + op->store.first_offset),
+ &afs_v2net(vnode)->n_store_bytes);
+ }
+}
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, wbk->key, false)) {
- afs_dataversion_t data_version = vnode->status.data_version + 1;
+static const struct afs_operation_ops afs_store_data_operation = {
+ .issue_afs_rpc = afs_fs_store_data,
+ .issue_yfs_rpc = yfs_fs_store_data,
+ .success = afs_store_data_success,
+};
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(vnode);
- afs_fs_store_data(&fc, mapping, first, last, offset, to, scb);
- }
+/*
+ * write to a file
+ */
+static int afs_store_data(struct address_space *mapping,
+ pgoff_t first, pgoff_t last,
+ unsigned offset, unsigned to)
+{
+ struct afs_vnode *vnode = AFS_FS_I(mapping->host);
+ struct afs_operation *op;
+ struct afs_wb_key *wbk = NULL;
+ int ret;
- afs_check_for_remote_deletion(&fc, vnode);
- afs_vnode_commit_status(&fc, vnode, fc.cb_break,
- &data_version, scb);
- if (fc.ac.error == 0)
- afs_pages_written_back(vnode, first, last);
- ret = afs_end_vnode_operation(&fc);
+ _enter("%s{%llx:%llu.%u},%lx,%lx,%x,%x",
+ vnode->volume->name,
+ vnode->fid.vid,
+ vnode->fid.vnode,
+ vnode->fid.unique,
+ first, last, offset, to);
+
+ ret = afs_get_writeback_key(vnode, &wbk);
+ if (ret) {
+ _leave(" = %d [no keys]", ret);
+ return ret;
}
- switch (ret) {
- case 0:
- afs_stat_v(vnode, n_stores);
- atomic_long_add((last * PAGE_SIZE + to) -
- (first * PAGE_SIZE + offset),
- &afs_v2net(vnode)->n_store_bytes);
- break;
+ op = afs_alloc_operation(wbk->key, vnode->volume);
+ if (IS_ERR(op)) {
+ afs_put_wb_key(wbk);
+ return -ENOMEM;
+ }
+
+ afs_op_set_vnode(op, 0, vnode);
+ op->file[0].dv_delta = 1;
+ op->store.mapping = mapping;
+ op->store.first = first;
+ op->store.last = last;
+ op->store.first_offset = offset;
+ op->store.last_to = to;
+ op->mtime = vnode->vfs_inode.i_mtime;
+ op->ops = &afs_store_data_operation;
+
+try_next_key:
+ afs_begin_vnode_operation(op);
+ afs_wait_for_operation(op);
+
+ switch (op->error) {
case -EACCES:
case -EPERM:
case -ENOKEY:
@@ -432,16 +463,19 @@ found_key:
case -EKEYREJECTED:
case -EKEYREVOKED:
_debug("next");
- spin_lock(&vnode->wb_lock);
- p = wbk->vnode_link.next;
- afs_put_wb_key(wbk);
- goto try_next_key;
+
+ ret = afs_get_writeback_key(vnode, &wbk);
+ if (ret == 0) {
+ key_put(op->key);
+ op->key = key_get(wbk->key);
+ goto try_next_key;
+ }
+ break;
}
afs_put_wb_key(wbk);
- kfree(scb);
- _leave(" = %d", ret);
- return ret;
+ _leave(" = %d", op->error);
+ return afs_put_operation(op);
}
/*
@@ -458,6 +492,7 @@ static int afs_write_back_from_locked_page(struct address_space *mapping,
unsigned long count, priv;
unsigned n, offset, to, f, t;
pgoff_t start, first, last;
+ loff_t i_size, end;
int loop, ret;
_enter(",%lx", primary_page->index);
@@ -558,7 +593,12 @@ no_more:
first = primary_page->index;
last = first + count - 1;
+ end = (loff_t)last * PAGE_SIZE + to;
+ i_size = i_size_read(&vnode->vfs_inode);
+
_debug("write back %lx[%u..] to %lx[..%u]", first, offset, last, to);
+ if (end > i_size)
+ to = i_size & ~PAGE_MASK;
ret = afs_store_data(mapping, first, last, offset, to);
switch (ret) {
@@ -811,6 +851,7 @@ vm_fault_t afs_page_mkwrite(struct vm_fault *vmf)
vmf->page->index, priv);
SetPagePrivate(vmf->page);
set_page_private(vmf->page, priv);
+ file_update_time(file);
sb_end_pagefault(inode->i_sb);
return VM_FAULT_LOCKED;
diff --git a/fs/afs/xattr.c b/fs/afs/xattr.c
index 7af41fd5f3ee..84f3c4f57531 100644
--- a/fs/afs/xattr.c
+++ b/fs/afs/xattr.c
@@ -35,6 +35,25 @@ ssize_t afs_listxattr(struct dentry *dentry, char *buffer, size_t size)
}
/*
+ * Deal with the result of a successful fetch ACL operation.
+ */
+static void afs_acl_success(struct afs_operation *op)
+{
+ afs_vnode_commit_status(op, &op->file[0]);
+}
+
+static void afs_acl_put(struct afs_operation *op)
+{
+ kfree(op->acl);
+}
+
+static const struct afs_operation_ops afs_fetch_acl_operation = {
+ .issue_afs_rpc = afs_fs_fetch_acl,
+ .success = afs_acl_success,
+ .put = afs_acl_put,
+};
+
+/*
* Get a file's ACL.
*/
static int afs_xattr_get_acl(const struct xattr_handler *handler,
@@ -42,37 +61,23 @@ static int afs_xattr_get_acl(const struct xattr_handler *handler,
struct inode *inode, const char *name,
void *buffer, size_t size)
{
- struct afs_fs_cursor fc;
- struct afs_status_cb *scb;
+ struct afs_operation *op;
struct afs_vnode *vnode = AFS_FS_I(inode);
struct afs_acl *acl = NULL;
- struct key *key;
- int ret = -ENOMEM;
+ int ret;
- scb = kzalloc(sizeof(struct afs_status_cb), GFP_NOFS);
- if (!scb)
- goto error;
-
- key = afs_request_key(vnode->volume->cell);
- if (IS_ERR(key)) {
- ret = PTR_ERR(key);
- goto error_scb;
- }
+ op = afs_alloc_operation(NULL, vnode->volume);
+ if (IS_ERR(op))
+ return -ENOMEM;
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, key, true)) {
- afs_dataversion_t data_version = vnode->status.data_version;
-
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(vnode);
- acl = afs_fs_fetch_acl(&fc, scb);
- }
+ afs_op_set_vnode(op, 0, vnode);
+ op->ops = &afs_fetch_acl_operation;
- afs_check_for_remote_deletion(&fc, fc.vnode);
- afs_vnode_commit_status(&fc, vnode, fc.cb_break,
- &data_version, scb);
- ret = afs_end_vnode_operation(&fc);
- }
+ afs_begin_vnode_operation(op);
+ afs_wait_for_operation(op);
+ acl = op->acl;
+ op->acl = NULL;
+ ret = afs_put_operation(op);
if (ret == 0) {
ret = acl->size;
@@ -80,18 +85,37 @@ static int afs_xattr_get_acl(const struct xattr_handler *handler,
if (acl->size <= size)
memcpy(buffer, acl->data, acl->size);
else
- ret = -ERANGE;
+ op->error = -ERANGE;
}
- kfree(acl);
}
- key_put(key);
-error_scb:
- kfree(scb);
-error:
+ kfree(acl);
return ret;
}
+static bool afs_make_acl(struct afs_operation *op,
+ const void *buffer, size_t size)
+{
+ struct afs_acl *acl;
+
+ acl = kmalloc(sizeof(*acl) + size, GFP_KERNEL);
+ if (!acl) {
+ afs_op_nomem(op);
+ return false;
+ }
+
+ acl->size = size;
+ memcpy(acl->data, buffer, size);
+ op->acl = acl;
+ return true;
+}
+
+static const struct afs_operation_ops afs_store_acl_operation = {
+ .issue_afs_rpc = afs_fs_store_acl,
+ .success = afs_acl_success,
+ .put = afs_acl_put,
+};
+
/*
* Set a file's AFS3 ACL.
*/
@@ -100,55 +124,22 @@ static int afs_xattr_set_acl(const struct xattr_handler *handler,
struct inode *inode, const char *name,
const void *buffer, size_t size, int flags)
{
- struct afs_fs_cursor fc;
- struct afs_status_cb *scb;
+ struct afs_operation *op;
struct afs_vnode *vnode = AFS_FS_I(inode);
- struct afs_acl *acl = NULL;
- struct key *key;
- int ret = -ENOMEM;
if (flags == XATTR_CREATE)
return -EINVAL;
- scb = kzalloc(sizeof(struct afs_status_cb), GFP_NOFS);
- if (!scb)
- goto error;
-
- acl = kmalloc(sizeof(*acl) + size, GFP_KERNEL);
- if (!acl)
- goto error_scb;
-
- key = afs_request_key(vnode->volume->cell);
- if (IS_ERR(key)) {
- ret = PTR_ERR(key);
- goto error_acl;
- }
-
- acl->size = size;
- memcpy(acl->data, buffer, size);
-
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, key, true)) {
- afs_dataversion_t data_version = vnode->status.data_version;
+ op = afs_alloc_operation(NULL, vnode->volume);
+ if (IS_ERR(op))
+ return -ENOMEM;
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(vnode);
- afs_fs_store_acl(&fc, acl, scb);
- }
+ afs_op_set_vnode(op, 0, vnode);
+ if (!afs_make_acl(op, buffer, size))
+ return afs_put_operation(op);
- afs_check_for_remote_deletion(&fc, fc.vnode);
- afs_vnode_commit_status(&fc, vnode, fc.cb_break,
- &data_version, scb);
- ret = afs_end_vnode_operation(&fc);
- }
-
- key_put(key);
-error_acl:
- kfree(acl);
-error_scb:
- kfree(scb);
-error:
- return ret;
+ op->ops = &afs_store_acl_operation;
+ return afs_do_sync_operation(op);
}
static const struct xattr_handler afs_xattr_afs_acl_handler = {
@@ -157,6 +148,17 @@ static const struct xattr_handler afs_xattr_afs_acl_handler = {
.set = afs_xattr_set_acl,
};
+static void yfs_acl_put(struct afs_operation *op)
+{
+ yfs_free_opaque_acl(op->yacl);
+}
+
+static const struct afs_operation_ops yfs_fetch_opaque_acl_operation = {
+ .issue_yfs_rpc = yfs_fs_fetch_opaque_acl,
+ .success = afs_acl_success,
+ /* Don't free op->yacl in .put here */
+};
+
/*
* Get a file's YFS ACL.
*/
@@ -165,11 +167,9 @@ static int afs_xattr_get_yfs(const struct xattr_handler *handler,
struct inode *inode, const char *name,
void *buffer, size_t size)
{
- struct afs_fs_cursor fc;
- struct afs_status_cb *scb;
+ struct afs_operation *op;
struct afs_vnode *vnode = AFS_FS_I(inode);
struct yfs_acl *yacl = NULL;
- struct key *key;
char buf[16], *data;
int which = 0, dsize, ret = -ENOMEM;
@@ -193,75 +193,62 @@ static int afs_xattr_get_yfs(const struct xattr_handler *handler,
else if (which == 3)
yacl->flags |= YFS_ACL_WANT_VOL_ACL;
- scb = kzalloc(sizeof(struct afs_status_cb), GFP_NOFS);
- if (!scb)
+ op = afs_alloc_operation(NULL, vnode->volume);
+ if (IS_ERR(op))
goto error_yacl;
- key = afs_request_key(vnode->volume->cell);
- if (IS_ERR(key)) {
- ret = PTR_ERR(key);
- goto error_scb;
- }
+ afs_op_set_vnode(op, 0, vnode);
+ op->yacl = yacl;
+ op->ops = &yfs_fetch_opaque_acl_operation;
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, key, true)) {
- afs_dataversion_t data_version = vnode->status.data_version;
+ afs_begin_vnode_operation(op);
+ afs_wait_for_operation(op);
+ ret = afs_put_operation(op);
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(vnode);
- yfs_fs_fetch_opaque_acl(&fc, yacl, scb);
+ if (ret == 0) {
+ switch (which) {
+ case 0:
+ data = yacl->acl->data;
+ dsize = yacl->acl->size;
+ break;
+ case 1:
+ data = buf;
+ dsize = scnprintf(buf, sizeof(buf), "%u", yacl->inherit_flag);
+ break;
+ case 2:
+ data = buf;
+ dsize = scnprintf(buf, sizeof(buf), "%u", yacl->num_cleaned);
+ break;
+ case 3:
+ data = yacl->vol_acl->data;
+ dsize = yacl->vol_acl->size;
+ break;
+ default:
+ ret = -EOPNOTSUPP;
+ goto error_yacl;
}
- afs_check_for_remote_deletion(&fc, fc.vnode);
- afs_vnode_commit_status(&fc, vnode, fc.cb_break,
- &data_version, scb);
- ret = afs_end_vnode_operation(&fc);
- }
-
- if (ret < 0)
- goto error_key;
-
- switch (which) {
- case 0:
- data = yacl->acl->data;
- dsize = yacl->acl->size;
- break;
- case 1:
- data = buf;
- dsize = scnprintf(buf, sizeof(buf), "%u", yacl->inherit_flag);
- break;
- case 2:
- data = buf;
- dsize = scnprintf(buf, sizeof(buf), "%u", yacl->num_cleaned);
- break;
- case 3:
- data = yacl->vol_acl->data;
- dsize = yacl->vol_acl->size;
- break;
- default:
- ret = -EOPNOTSUPP;
- goto error_key;
- }
-
- ret = dsize;
- if (size > 0) {
- if (dsize > size) {
- ret = -ERANGE;
- goto error_key;
+ ret = dsize;
+ if (size > 0) {
+ if (dsize <= size)
+ memcpy(buffer, data, dsize);
+ else
+ ret = -ERANGE;
}
- memcpy(buffer, data, dsize);
}
-error_key:
- key_put(key);
-error_scb:
- kfree(scb);
error_yacl:
yfs_free_opaque_acl(yacl);
error:
return ret;
}
+static const struct afs_operation_ops yfs_store_opaque_acl2_operation = {
+ .issue_yfs_rpc = yfs_fs_store_opaque_acl2,
+ .success = afs_acl_success,
+ .put = yfs_acl_put,
+};
+
/*
* Set a file's YFS ACL.
*/
@@ -270,56 +257,23 @@ static int afs_xattr_set_yfs(const struct xattr_handler *handler,
struct inode *inode, const char *name,
const void *buffer, size_t size, int flags)
{
- struct afs_fs_cursor fc;
- struct afs_status_cb *scb;
+ struct afs_operation *op;
struct afs_vnode *vnode = AFS_FS_I(inode);
- struct afs_acl *acl = NULL;
- struct key *key;
- int ret = -ENOMEM;
if (flags == XATTR_CREATE ||
strcmp(name, "acl") != 0)
return -EINVAL;
- scb = kzalloc(sizeof(struct afs_status_cb), GFP_NOFS);
- if (!scb)
- goto error;
-
- acl = kmalloc(sizeof(*acl) + size, GFP_KERNEL);
- if (!acl)
- goto error_scb;
+ op = afs_alloc_operation(NULL, vnode->volume);
+ if (IS_ERR(op))
+ return -ENOMEM;
- acl->size = size;
- memcpy(acl->data, buffer, size);
+ afs_op_set_vnode(op, 0, vnode);
+ if (!afs_make_acl(op, buffer, size))
+ return afs_put_operation(op);
- key = afs_request_key(vnode->volume->cell);
- if (IS_ERR(key)) {
- ret = PTR_ERR(key);
- goto error_acl;
- }
-
- ret = -ERESTARTSYS;
- if (afs_begin_vnode_operation(&fc, vnode, key, true)) {
- afs_dataversion_t data_version = vnode->status.data_version;
-
- while (afs_select_fileserver(&fc)) {
- fc.cb_break = afs_calc_vnode_cb_break(vnode);
- yfs_fs_store_opaque_acl2(&fc, acl, scb);
- }
-
- afs_check_for_remote_deletion(&fc, fc.vnode);
- afs_vnode_commit_status(&fc, vnode, fc.cb_break,
- &data_version, scb);
- ret = afs_end_vnode_operation(&fc);
- }
-
-error_acl:
- kfree(acl);
- key_put(key);
-error_scb:
- kfree(scb);
-error:
- return ret;
+ op->ops = &yfs_store_opaque_acl2_operation;
+ return afs_do_sync_operation(op);
}
static const struct xattr_handler afs_xattr_yfs_handler = {
diff --git a/fs/afs/yfsclient.c b/fs/afs/yfsclient.c
index a26126ac7bf1..8c24fdc899e3 100644
--- a/fs/afs/yfsclient.c
+++ b/fs/afs/yfsclient.c
@@ -15,13 +15,6 @@
#include "xdr_fs.h"
#include "protocol_yfs.h"
-static const struct afs_fid afs_zero_fid;
-
-static inline void afs_use_fs_server(struct afs_call *call, struct afs_cb_interest *cbi)
-{
- call->cbi = afs_get_cb_interest(cbi);
-}
-
#define xdr_size(x) (sizeof(*x) / sizeof(__be32))
static void xdr_decode_YFSFid(const __be32 **_bp, struct afs_fid *fid)
@@ -79,6 +72,11 @@ static __be32 *xdr_encode_string(__be32 *bp, const char *p, unsigned int len)
return bp + len / sizeof(__be32);
}
+static __be32 *xdr_encode_name(__be32 *bp, const struct qstr *p)
+{
+ return xdr_encode_string(bp, p->name, p->len);
+}
+
static s64 linux_to_yfs_time(const struct timespec64 *t)
{
/* Convert to 100ns intervals. */
@@ -165,23 +163,23 @@ static void xdr_dump_bad(const __be32 *bp)
int i;
pr_notice("YFS XDR: Bad status record\n");
- for (i = 0; i < 5 * 4 * 4; i += 16) {
+ for (i = 0; i < 6 * 4 * 4; i += 16) {
memcpy(x, bp, 16);
bp += 4;
pr_notice("%03x: %08x %08x %08x %08x\n",
i, ntohl(x[0]), ntohl(x[1]), ntohl(x[2]), ntohl(x[3]));
}
- memcpy(x, bp, 4);
- pr_notice("0x50: %08x\n", ntohl(x[0]));
+ memcpy(x, bp, 8);
+ pr_notice("0x60: %08x %08x\n", ntohl(x[0]), ntohl(x[1]));
}
/*
* Decode a YFSFetchStatus block
*/
-static int xdr_decode_YFSFetchStatus(const __be32 **_bp,
- struct afs_call *call,
- struct afs_status_cb *scb)
+static void xdr_decode_YFSFetchStatus(const __be32 **_bp,
+ struct afs_call *call,
+ struct afs_status_cb *scb)
{
const struct yfs_xdr_YFSFetchStatus *xdr = (const void *)*_bp;
struct afs_file_status *status = &scb->status;
@@ -192,7 +190,7 @@ static int xdr_decode_YFSFetchStatus(const __be32 **_bp,
if (status->abort_code == VNOVNODE)
status->nlink = 0;
scb->have_error = true;
- return 0;
+ goto advance;
}
type = ntohl(xdr->type);
@@ -220,13 +218,14 @@ static int xdr_decode_YFSFetchStatus(const __be32 **_bp,
status->size = xdr_to_u64(xdr->size);
status->data_version = xdr_to_u64(xdr->data_version);
scb->have_status = true;
-
+advance:
*_bp += xdr_size(xdr);
- return 0;
+ return;
bad:
xdr_dump_bad(*_bp);
- return afs_protocol_error(call, -EBADMSG, afs_eproto_bad_status);
+ afs_protocol_error(call, afs_eproto_bad_status);
+ goto advance;
}
/*
@@ -331,35 +330,12 @@ static void xdr_decode_YFSFetchVolumeStatus(const __be32 **_bp,
}
/*
- * Deliver a reply that's a status, callback and volsync.
- */
-static int yfs_deliver_fs_status_cb_and_volsync(struct afs_call *call)
-{
- const __be32 *bp;
- int ret;
-
- ret = afs_transfer_reply(call);
- if (ret < 0)
- return ret;
-
- /* unmarshall the reply once we've received all of it */
- bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- xdr_decode_YFSCallBack(&bp, call, call->out_scb);
- xdr_decode_YFSVolSync(&bp, call->out_volsync);
-
- _leave(" = 0 [done]");
- return 0;
-}
-
-/*
* Deliver reply data to operations that just return a file status and a volume
* sync record.
*/
static int yfs_deliver_status_and_volsync(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
const __be32 *bp;
int ret;
@@ -368,74 +344,21 @@ static int yfs_deliver_status_and_volsync(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- xdr_decode_YFSVolSync(&bp, call->out_volsync);
+ xdr_decode_YFSFetchStatus(&bp, call, &op->file[0].scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
_leave(" = 0 [done]");
return 0;
}
/*
- * YFS.FetchStatus operation type
- */
-static const struct afs_call_type yfs_RXYFSFetchStatus_vnode = {
- .name = "YFS.FetchStatus(vnode)",
- .op = yfs_FS_FetchStatus,
- .deliver = yfs_deliver_fs_status_cb_and_volsync,
- .destructor = afs_flat_call_destructor,
-};
-
-/*
- * Fetch the status information for a file.
- */
-int yfs_fs_fetch_file_status(struct afs_fs_cursor *fc, struct afs_status_cb *scb,
- struct afs_volsync *volsync)
-{
- struct afs_vnode *vnode = fc->vnode;
- struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
- __be32 *bp;
-
- _enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
-
- call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus_vnode,
- sizeof(__be32) * 2 +
- sizeof(struct yfs_xdr_YFSFid),
- sizeof(struct yfs_xdr_YFSFetchStatus) +
- sizeof(struct yfs_xdr_YFSCallBack) +
- sizeof(struct yfs_xdr_YFSVolSync));
- if (!call) {
- fc->ac.error = -ENOMEM;
- return -ENOMEM;
- }
-
- call->key = fc->key;
- call->out_scb = scb;
- call->out_volsync = volsync;
-
- /* marshall the parameters */
- bp = call->request;
- bp = xdr_encode_u32(bp, YFSFETCHSTATUS);
- bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &vnode->fid);
- yfs_check_req(call, bp);
-
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
-}
-
-/*
* Deliver reply data to an YFS.FetchData64.
*/
static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
{
- struct afs_read *req = call->read_request;
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_read *req = op->fetch.req;
const __be32 *bp;
unsigned int size;
int ret;
@@ -493,8 +416,6 @@ static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
ASSERTCMP(req->offset, <=, PAGE_SIZE);
if (req->offset == PAGE_SIZE) {
req->offset = 0;
- if (req->page_done)
- req->page_done(req);
req->index++;
if (req->remain > 0)
goto begin_page;
@@ -532,14 +453,12 @@ static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- xdr_decode_YFSCallBack(&bp, call, call->out_scb);
- xdr_decode_YFSVolSync(&bp, call->out_volsync);
+ xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_YFSCallBack(&bp, call, &vp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
- req->data_version = call->out_scb->status.data_version;
- req->file_size = call->out_scb->status.size;
+ req->data_version = vp->scb.status.data_version;
+ req->file_size = vp->scb.status.size;
call->unmarshall++;
/* Fall through */
@@ -552,21 +471,17 @@ static int yfs_deliver_fs_fetch_data64(struct afs_call *call)
if (req->offset < PAGE_SIZE)
zero_user_segment(req->pages[req->index],
req->offset, PAGE_SIZE);
- if (req->page_done)
- req->page_done(req);
req->offset = 0;
}
+ if (req->page_done)
+ for (req->index = 0; req->index < req->nr_pages; req->index++)
+ req->page_done(req);
+
_leave(" = 0 [done]");
return 0;
}
-static void yfs_fetch_data_destructor(struct afs_call *call)
-{
- afs_put_read(call->read_request);
- afs_flat_call_destructor(call);
-}
-
/*
* YFS.FetchData64 operation type
*/
@@ -574,25 +489,24 @@ static const struct afs_call_type yfs_RXYFSFetchData64 = {
.name = "YFS.FetchData64",
.op = yfs_FS_FetchData64,
.deliver = yfs_deliver_fs_fetch_data64,
- .destructor = yfs_fetch_data_destructor,
+ .destructor = afs_flat_call_destructor,
};
/*
* Fetch data from a file.
*/
-int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_status_cb *scb,
- struct afs_read *req)
+void yfs_fs_fetch_data(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
+ struct afs_read *req = op->fetch.req;
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
_enter(",%x,{%llx:%llu},%llx,%llx",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode,
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode,
req->pos, req->len);
- call = afs_alloc_flat_call(net, &yfs_RXYFSFetchData64,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchData64,
sizeof(__be32) * 2 +
sizeof(struct yfs_xdr_YFSFid) +
sizeof(struct yfs_xdr_u64) * 2,
@@ -600,27 +514,19 @@ int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_status_cb *scb,
sizeof(struct yfs_xdr_YFSCallBack) +
sizeof(struct yfs_xdr_YFSVolSync));
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_scb = scb;
- call->out_volsync = NULL;
- call->read_request = afs_get_read(req);
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSFETCHDATA64);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &vnode->fid);
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
bp = xdr_encode_u64(bp, req->pos);
bp = xdr_encode_u64(bp, req->len);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -628,6 +534,9 @@ int yfs_fs_fetch_data(struct afs_fs_cursor *fc, struct afs_status_cb *scb,
*/
static int yfs_deliver_fs_create_vnode(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
const __be32 *bp;
int ret;
@@ -639,15 +548,11 @@ static int yfs_deliver_fs_create_vnode(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- xdr_decode_YFSFid(&bp, call->out_fid);
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
- xdr_decode_YFSCallBack(&bp, call, call->out_scb);
- xdr_decode_YFSVolSync(&bp, call->out_volsync);
+ xdr_decode_YFSFid(&bp, &op->file[1].fid);
+ xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
+ xdr_decode_YFSCallBack(&bp, call, &vp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
_leave(" = 0 [done]");
return 0;
@@ -666,26 +571,20 @@ static const struct afs_call_type afs_RXFSCreateFile = {
/*
* Create a file.
*/
-int yfs_fs_create_file(struct afs_fs_cursor *fc,
- const char *name,
- umode_t mode,
- struct afs_status_cb *dvnode_scb,
- struct afs_fid *newfid,
- struct afs_status_cb *new_scb)
+void yfs_fs_create_file(struct afs_operation *op)
{
- struct afs_vnode *dvnode = fc->vnode;
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(dvnode);
- size_t namesz, reqsz, rplsz;
+ size_t reqsz, rplsz;
__be32 *bp;
_enter("");
- namesz = strlen(name);
reqsz = (sizeof(__be32) +
sizeof(__be32) +
sizeof(struct yfs_xdr_YFSFid) +
- xdr_strlen(namesz) +
+ xdr_strlen(name->len) +
sizeof(struct yfs_xdr_YFSStoreStatus) +
sizeof(__be32));
rplsz = (sizeof(struct yfs_xdr_YFSFid) +
@@ -694,30 +593,22 @@ int yfs_fs_create_file(struct afs_fs_cursor *fc,
sizeof(struct yfs_xdr_YFSCallBack) +
sizeof(struct yfs_xdr_YFSVolSync));
- call = afs_alloc_flat_call(net, &afs_RXFSCreateFile, reqsz, rplsz);
+ call = afs_alloc_flat_call(op->net, &afs_RXFSCreateFile, reqsz, rplsz);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_dir_scb = dvnode_scb;
- call->out_fid = newfid;
- call->out_scb = new_scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSCREATEFILE);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &dvnode->fid);
- bp = xdr_encode_string(bp, name, namesz);
- bp = xdr_encode_YFSStoreStatus_mode(bp, mode);
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_name(bp, name);
+ bp = xdr_encode_YFSStoreStatus_mode(bp, op->create.mode);
bp = xdr_encode_u32(bp, yfs_LockNone); /* ViceLockType */
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call1(call, &dvnode->fid, name);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
}
static const struct afs_call_type yfs_RXFSMakeDir = {
@@ -730,26 +621,20 @@ static const struct afs_call_type yfs_RXFSMakeDir = {
/*
* Make a directory.
*/
-int yfs_fs_make_dir(struct afs_fs_cursor *fc,
- const char *name,
- umode_t mode,
- struct afs_status_cb *dvnode_scb,
- struct afs_fid *newfid,
- struct afs_status_cb *new_scb)
+void yfs_fs_make_dir(struct afs_operation *op)
{
- struct afs_vnode *dvnode = fc->vnode;
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(dvnode);
- size_t namesz, reqsz, rplsz;
+ size_t reqsz, rplsz;
__be32 *bp;
_enter("");
- namesz = strlen(name);
reqsz = (sizeof(__be32) +
sizeof(struct yfs_xdr_RPCFlags) +
sizeof(struct yfs_xdr_YFSFid) +
- xdr_strlen(namesz) +
+ xdr_strlen(name->len) +
sizeof(struct yfs_xdr_YFSStoreStatus));
rplsz = (sizeof(struct yfs_xdr_YFSFid) +
sizeof(struct yfs_xdr_YFSFetchStatus) +
@@ -757,29 +642,21 @@ int yfs_fs_make_dir(struct afs_fs_cursor *fc,
sizeof(struct yfs_xdr_YFSCallBack) +
sizeof(struct yfs_xdr_YFSVolSync));
- call = afs_alloc_flat_call(net, &yfs_RXFSMakeDir, reqsz, rplsz);
+ call = afs_alloc_flat_call(op->net, &yfs_RXFSMakeDir, reqsz, rplsz);
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_dir_scb = dvnode_scb;
- call->out_fid = newfid;
- call->out_scb = new_scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSMAKEDIR);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &dvnode->fid);
- bp = xdr_encode_string(bp, name, namesz);
- bp = xdr_encode_YFSStoreStatus_mode(bp, mode);
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_name(bp, name);
+ bp = xdr_encode_YFSStoreStatus_mode(bp, op->create.mode);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call1(call, &dvnode->fid, name);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -787,6 +664,9 @@ int yfs_fs_make_dir(struct afs_fs_cursor *fc,
*/
static int yfs_deliver_fs_remove_file2(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
struct afs_fid fid;
const __be32 *bp;
int ret;
@@ -798,20 +678,24 @@ static int yfs_deliver_fs_remove_file2(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
-
+ xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
xdr_decode_YFSFid(&bp, &fid);
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
/* Was deleted if vnode->status.abort_code == VNOVNODE. */
- xdr_decode_YFSVolSync(&bp, call->out_volsync);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
return 0;
}
+static void yfs_done_fs_remove_file2(struct afs_call *call)
+{
+ if (call->error == -ECONNABORTED &&
+ call->abort_code == RX_INVALID_OPERATION) {
+ set_bit(AFS_SERVER_FL_NO_RM2, &call->server->flags);
+ call->op->flags |= AFS_OPERATION_DOWNGRADE;
+ }
+}
+
/*
* YFS.RemoveFile2 operation type.
*/
@@ -819,55 +703,44 @@ static const struct afs_call_type yfs_RXYFSRemoveFile2 = {
.name = "YFS.RemoveFile2",
.op = yfs_FS_RemoveFile2,
.deliver = yfs_deliver_fs_remove_file2,
+ .done = yfs_done_fs_remove_file2,
.destructor = afs_flat_call_destructor,
};
/*
* Remove a file and retrieve new file status.
*/
-int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
- const char *name, struct afs_status_cb *dvnode_scb,
- struct afs_status_cb *vnode_scb)
+void yfs_fs_remove_file2(struct afs_operation *op)
{
- struct afs_vnode *dvnode = fc->vnode;
+ struct afs_vnode_param *dvp = &op->file[0];
+ const struct qstr *name = &op->dentry->d_name;
struct afs_call *call;
- struct afs_net *net = afs_v2net(dvnode);
- size_t namesz;
__be32 *bp;
_enter("");
- namesz = strlen(name);
-
- call = afs_alloc_flat_call(net, &yfs_RXYFSRemoveFile2,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveFile2,
sizeof(__be32) +
sizeof(struct yfs_xdr_RPCFlags) +
sizeof(struct yfs_xdr_YFSFid) +
- xdr_strlen(namesz),
+ xdr_strlen(name->len),
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSFid) +
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSVolSync));
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_dir_scb = dvnode_scb;
- call->out_scb = vnode_scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSREMOVEFILE2);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &dvnode->fid);
- bp = xdr_encode_string(bp, name, namesz);
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_name(bp, name);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call1(call, &dvnode->fid, name);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -875,6 +748,8 @@ int yfs_fs_remove_file2(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
*/
static int yfs_deliver_fs_remove(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *dvp = &op->file[0];
const __be32 *bp;
int ret;
@@ -885,11 +760,8 @@ static int yfs_deliver_fs_remove(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
-
- xdr_decode_YFSVolSync(&bp, call->out_volsync);
+ xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
return 0;
}
@@ -903,6 +775,43 @@ static const struct afs_call_type yfs_RXYFSRemoveFile = {
.destructor = afs_flat_call_destructor,
};
+/*
+ * Remove a file.
+ */
+void yfs_fs_remove_file(struct afs_operation *op)
+{
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_call *call;
+ __be32 *bp;
+
+ _enter("");
+
+ if (!test_bit(AFS_SERVER_FL_NO_RM2, &op->server->flags))
+ return yfs_fs_remove_file2(op);
+
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveFile,
+ sizeof(__be32) +
+ sizeof(struct yfs_xdr_RPCFlags) +
+ sizeof(struct yfs_xdr_YFSFid) +
+ xdr_strlen(name->len),
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
+ if (!call)
+ return afs_op_nomem(op);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp = xdr_encode_u32(bp, YFSREMOVEFILE);
+ bp = xdr_encode_u32(bp, 0); /* RPC flags */
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_name(bp, name);
+ yfs_check_req(call, bp);
+
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
static const struct afs_call_type yfs_RXYFSRemoveDir = {
.name = "YFS.RemoveDir",
.op = yfs_FS_RemoveDir,
@@ -911,48 +820,37 @@ static const struct afs_call_type yfs_RXYFSRemoveDir = {
};
/*
- * remove a file or directory
+ * Remove a directory.
*/
-int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
- const char *name, bool isdir,
- struct afs_status_cb *dvnode_scb)
+void yfs_fs_remove_dir(struct afs_operation *op)
{
- struct afs_vnode *dvnode = fc->vnode;
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(dvnode);
- size_t namesz;
__be32 *bp;
_enter("");
- namesz = strlen(name);
- call = afs_alloc_flat_call(
- net, isdir ? &yfs_RXYFSRemoveDir : &yfs_RXYFSRemoveFile,
- sizeof(__be32) +
- sizeof(struct yfs_xdr_RPCFlags) +
- sizeof(struct yfs_xdr_YFSFid) +
- xdr_strlen(namesz),
- sizeof(struct yfs_xdr_YFSFetchStatus) +
- sizeof(struct yfs_xdr_YFSVolSync));
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSRemoveDir,
+ sizeof(__be32) +
+ sizeof(struct yfs_xdr_RPCFlags) +
+ sizeof(struct yfs_xdr_YFSFid) +
+ xdr_strlen(name->len),
+ sizeof(struct yfs_xdr_YFSFetchStatus) +
+ sizeof(struct yfs_xdr_YFSVolSync));
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_dir_scb = dvnode_scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
- bp = xdr_encode_u32(bp, isdir ? YFSREMOVEDIR : YFSREMOVEFILE);
+ bp = xdr_encode_u32(bp, YFSREMOVEDIR);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &dvnode->fid);
- bp = xdr_encode_string(bp, name, namesz);
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_name(bp, name);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call1(call, &dvnode->fid, name);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -960,6 +858,9 @@ int yfs_fs_remove(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
*/
static int yfs_deliver_fs_link(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
const __be32 *bp;
int ret;
@@ -970,13 +871,9 @@ static int yfs_deliver_fs_link(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
- xdr_decode_YFSVolSync(&bp, call->out_volsync);
+ xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
_leave(" = 0 [done]");
return 0;
}
@@ -994,50 +891,39 @@ static const struct afs_call_type yfs_RXYFSLink = {
/*
* Make a hard link.
*/
-int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
- const char *name,
- struct afs_status_cb *dvnode_scb,
- struct afs_status_cb *vnode_scb)
+void yfs_fs_link(struct afs_operation *op)
{
- struct afs_vnode *dvnode = fc->vnode;
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
- size_t namesz;
__be32 *bp;
_enter("");
- namesz = strlen(name);
- call = afs_alloc_flat_call(net, &yfs_RXYFSLink,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSLink,
sizeof(__be32) +
sizeof(struct yfs_xdr_RPCFlags) +
sizeof(struct yfs_xdr_YFSFid) +
- xdr_strlen(namesz) +
+ xdr_strlen(name->len) +
sizeof(struct yfs_xdr_YFSFid),
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSVolSync));
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_dir_scb = dvnode_scb;
- call->out_scb = vnode_scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSLINK);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &dvnode->fid);
- bp = xdr_encode_string(bp, name, namesz);
- bp = xdr_encode_YFSFid(bp, &vnode->fid);
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_name(bp, name);
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call1(call, &vnode->fid, name);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call1(call, &vp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -1045,6 +931,9 @@ int yfs_fs_link(struct afs_fs_cursor *fc, struct afs_vnode *vnode,
*/
static int yfs_deliver_fs_symlink(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
const __be32 *bp;
int ret;
@@ -1056,14 +945,10 @@ static int yfs_deliver_fs_symlink(struct afs_call *call)
/* unmarshall the reply once we've received all of it */
bp = call->buffer;
- xdr_decode_YFSFid(&bp, call->out_fid);
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
- xdr_decode_YFSVolSync(&bp, call->out_volsync);
+ xdr_decode_YFSFid(&bp, &vp->fid);
+ xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_YFSFetchStatus(&bp, call, &dvp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
_leave(" = 0 [done]");
return 0;
@@ -1082,28 +967,22 @@ static const struct afs_call_type yfs_RXYFSSymlink = {
/*
* Create a symbolic link.
*/
-int yfs_fs_symlink(struct afs_fs_cursor *fc,
- const char *name,
- const char *contents,
- struct afs_status_cb *dvnode_scb,
- struct afs_fid *newfid,
- struct afs_status_cb *vnode_scb)
+void yfs_fs_symlink(struct afs_operation *op)
{
- struct afs_vnode *dvnode = fc->vnode;
+ const struct qstr *name = &op->dentry->d_name;
+ struct afs_vnode_param *dvp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(dvnode);
- size_t namesz, contents_sz;
+ size_t contents_sz;
__be32 *bp;
_enter("");
- namesz = strlen(name);
- contents_sz = strlen(contents);
- call = afs_alloc_flat_call(net, &yfs_RXYFSSymlink,
+ contents_sz = strlen(op->create.symlink);
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSSymlink,
sizeof(__be32) +
sizeof(struct yfs_xdr_RPCFlags) +
sizeof(struct yfs_xdr_YFSFid) +
- xdr_strlen(namesz) +
+ xdr_strlen(name->len) +
xdr_strlen(contents_sz) +
sizeof(struct yfs_xdr_YFSStoreStatus),
sizeof(struct yfs_xdr_YFSFid) +
@@ -1111,28 +990,20 @@ int yfs_fs_symlink(struct afs_fs_cursor *fc,
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSVolSync));
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_dir_scb = dvnode_scb;
- call->out_fid = newfid;
- call->out_scb = vnode_scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSSYMLINK);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &dvnode->fid);
- bp = xdr_encode_string(bp, name, namesz);
- bp = xdr_encode_string(bp, contents, contents_sz);
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_name(bp, name);
+ bp = xdr_encode_string(bp, op->create.symlink, contents_sz);
bp = xdr_encode_YFSStoreStatus_mode(bp, S_IRWXUGO);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call1(call, &dvnode->fid, name);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call1(call, &dvp->fid, name);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -1140,6 +1011,9 @@ int yfs_fs_symlink(struct afs_fs_cursor *fc,
*/
static int yfs_deliver_fs_rename(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *orig_dvp = &op->file[0];
+ struct afs_vnode_param *new_dvp = &op->file[1];
const __be32 *bp;
int ret;
@@ -1150,16 +1024,12 @@ static int yfs_deliver_fs_rename(struct afs_call *call)
return ret;
bp = call->buffer;
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_dir_scb);
- if (ret < 0)
- return ret;
- if (call->out_dir_scb != call->out_scb) {
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- }
-
- xdr_decode_YFSVolSync(&bp, call->out_volsync);
+ /* If the two dirs are the same, we have two copies of the same status
+ * report, so we just decode it twice.
+ */
+ xdr_decode_YFSFetchStatus(&bp, call, &orig_dvp->scb);
+ xdr_decode_YFSFetchStatus(&bp, call, &new_dvp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
_leave(" = 0 [done]");
return 0;
}
@@ -1177,55 +1047,42 @@ static const struct afs_call_type yfs_RXYFSRename = {
/*
* Rename a file or directory.
*/
-int yfs_fs_rename(struct afs_fs_cursor *fc,
- const char *orig_name,
- struct afs_vnode *new_dvnode,
- const char *new_name,
- struct afs_status_cb *orig_dvnode_scb,
- struct afs_status_cb *new_dvnode_scb)
+void yfs_fs_rename(struct afs_operation *op)
{
- struct afs_vnode *orig_dvnode = fc->vnode;
+ struct afs_vnode_param *orig_dvp = &op->file[0];
+ struct afs_vnode_param *new_dvp = &op->file[1];
+ const struct qstr *orig_name = &op->dentry->d_name;
+ const struct qstr *new_name = &op->dentry_2->d_name;
struct afs_call *call;
- struct afs_net *net = afs_v2net(orig_dvnode);
- size_t o_namesz, n_namesz;
__be32 *bp;
_enter("");
- o_namesz = strlen(orig_name);
- n_namesz = strlen(new_name);
- call = afs_alloc_flat_call(net, &yfs_RXYFSRename,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSRename,
sizeof(__be32) +
sizeof(struct yfs_xdr_RPCFlags) +
sizeof(struct yfs_xdr_YFSFid) +
- xdr_strlen(o_namesz) +
+ xdr_strlen(orig_name->len) +
sizeof(struct yfs_xdr_YFSFid) +
- xdr_strlen(n_namesz),
+ xdr_strlen(new_name->len),
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSVolSync));
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_dir_scb = orig_dvnode_scb;
- call->out_scb = new_dvnode_scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSRENAME);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &orig_dvnode->fid);
- bp = xdr_encode_string(bp, orig_name, o_namesz);
- bp = xdr_encode_YFSFid(bp, &new_dvnode->fid);
- bp = xdr_encode_string(bp, new_name, n_namesz);
+ bp = xdr_encode_YFSFid(bp, &orig_dvp->fid);
+ bp = xdr_encode_name(bp, orig_name);
+ bp = xdr_encode_YFSFid(bp, &new_dvp->fid);
+ bp = xdr_encode_name(bp, new_name);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call2(call, &orig_dvnode->fid, orig_name, new_name);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call2(call, &orig_dvp->fid, orig_name, new_name);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -1241,27 +1098,23 @@ static const struct afs_call_type yfs_RXYFSStoreData64 = {
/*
* Store a set of pages to a large file.
*/
-int yfs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
- pgoff_t first, pgoff_t last,
- unsigned offset, unsigned to,
- struct afs_status_cb *scb)
+void yfs_fs_store_data(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
loff_t size, pos, i_size;
__be32 *bp;
_enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- size = (loff_t)to - (loff_t)offset;
- if (first != last)
- size += (loff_t)(last - first) << PAGE_SHIFT;
- pos = (loff_t)first << PAGE_SHIFT;
- pos += offset;
+ size = (loff_t)op->store.last_to - (loff_t)op->store.first_offset;
+ if (op->store.first != op->store.last)
+ size += (loff_t)(op->store.last - op->store.first) << PAGE_SHIFT;
+ pos = (loff_t)op->store.first << PAGE_SHIFT;
+ pos += op->store.first_offset;
- i_size = i_size_read(&vnode->vfs_inode);
+ i_size = i_size_read(&vp->vnode->vfs_inode);
if (pos + size > i_size)
i_size = size + pos;
@@ -1269,7 +1122,7 @@ int yfs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
(unsigned long long)size, (unsigned long long)pos,
(unsigned long long)i_size);
- call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreData64,
sizeof(__be32) +
sizeof(__be32) +
sizeof(struct yfs_xdr_YFSFid) +
@@ -1278,33 +1131,24 @@ int yfs_fs_store_data(struct afs_fs_cursor *fc, struct address_space *mapping,
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSVolSync));
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->mapping = mapping;
- call->first = first;
- call->last = last;
- call->first_offset = offset;
- call->last_to = to;
+ return afs_op_nomem(op);
+
+ call->key = op->key;
call->send_pages = true;
- call->out_scb = scb;
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSSTOREDATA64);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &vnode->fid);
- bp = xdr_encode_YFSStoreStatus_mtime(bp, &vnode->vfs_inode.i_mtime);
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ bp = xdr_encode_YFSStoreStatus_mtime(bp, &op->mtime);
bp = xdr_encode_u64(bp, pos);
bp = xdr_encode_u64(bp, size);
bp = xdr_encode_u64(bp, i_size);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -1328,18 +1172,17 @@ static const struct afs_call_type yfs_RXYFSStoreData64_as_Status = {
* Set the attributes on a file, using YFS.StoreData64 rather than
* YFS.StoreStatus so as to alter the file size also.
*/
-static int yfs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr,
- struct afs_status_cb *scb)
+static void yfs_fs_setattr_size(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
+ struct iattr *attr = op->setattr.attr;
__be32 *bp;
_enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- call = afs_alloc_flat_call(net, &yfs_RXYFSStoreData64_as_Status,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreData64_as_Status,
sizeof(__be32) * 2 +
sizeof(struct yfs_xdr_YFSFid) +
sizeof(struct yfs_xdr_YFSStoreStatus) +
@@ -1347,72 +1190,59 @@ static int yfs_fs_setattr_size(struct afs_fs_cursor *fc, struct iattr *attr,
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSVolSync));
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_scb = scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSSTOREDATA64);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &vnode->fid);
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
bp = xdr_encode_YFS_StoreStatus(bp, attr);
bp = xdr_encode_u64(bp, attr->ia_size); /* position of start of write */
bp = xdr_encode_u64(bp, 0); /* size of write */
bp = xdr_encode_u64(bp, attr->ia_size); /* new file length */
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
* Set the attributes on a file, using YFS.StoreData64 if there's a change in
* file size, and YFS.StoreStatus otherwise.
*/
-int yfs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr,
- struct afs_status_cb *scb)
+void yfs_fs_setattr(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
+ struct iattr *attr = op->setattr.attr;
__be32 *bp;
if (attr->ia_valid & ATTR_SIZE)
- return yfs_fs_setattr_size(fc, attr, scb);
+ return yfs_fs_setattr_size(op);
_enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- call = afs_alloc_flat_call(net, &yfs_RXYFSStoreStatus,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreStatus,
sizeof(__be32) * 2 +
sizeof(struct yfs_xdr_YFSFid) +
sizeof(struct yfs_xdr_YFSStoreStatus),
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSVolSync));
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_scb = scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSSTORESTATUS);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &vnode->fid);
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
bp = xdr_encode_YFS_StoreStatus(bp, attr);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -1420,6 +1250,7 @@ int yfs_fs_setattr(struct afs_fs_cursor *fc, struct iattr *attr,
*/
static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
const __be32 *bp;
char *p;
u32 size;
@@ -1441,7 +1272,7 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
return ret;
bp = call->buffer;
- xdr_decode_YFSFetchVolumeStatus(&bp, call->out_volstatus);
+ xdr_decode_YFSFetchVolumeStatus(&bp, &op->volstatus.vs);
call->unmarshall++;
afs_extract_to_tmp(call);
/* Fall through */
@@ -1455,8 +1286,7 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("volname length: %u", call->count);
if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_volname_len);
+ return afs_protocol_error(call, afs_eproto_volname_len);
size = (call->count + 3) & ~3; /* It's padded */
afs_extract_to_buf(call, size);
call->unmarshall++;
@@ -1485,8 +1315,7 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("offline msg length: %u", call->count);
if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_offline_msg_len);
+ return afs_protocol_error(call, afs_eproto_offline_msg_len);
size = (call->count + 3) & ~3; /* It's padded */
afs_extract_to_buf(call, size);
call->unmarshall++;
@@ -1516,8 +1345,7 @@ static int yfs_deliver_fs_get_volume_status(struct afs_call *call)
call->count = ntohl(call->tmp);
_debug("motd length: %u", call->count);
if (call->count >= AFSNAMEMAX)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_motd_len);
+ return afs_protocol_error(call, afs_eproto_motd_len);
size = (call->count + 3) & ~3; /* It's padded */
afs_extract_to_buf(call, size);
call->unmarshall++;
@@ -1558,17 +1386,15 @@ static const struct afs_call_type yfs_RXYFSGetVolumeStatus = {
/*
* fetch the status of a volume
*/
-int yfs_fs_get_volume_status(struct afs_fs_cursor *fc,
- struct afs_volume_status *vs)
+void yfs_fs_get_volume_status(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
_enter("");
- call = afs_alloc_flat_call(net, &yfs_RXYFSGetVolumeStatus,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSGetVolumeStatus,
sizeof(__be32) * 2 +
sizeof(struct yfs_xdr_u64),
max_t(size_t,
@@ -1576,23 +1402,17 @@ int yfs_fs_get_volume_status(struct afs_fs_cursor *fc,
sizeof(__be32),
AFSOPAQUEMAX + 1));
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->out_volstatus = vs;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSGETVOLUMESTATUS);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_u64(bp, vnode->fid.vid);
+ bp = xdr_encode_u64(bp, vp->fid.vid);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -1630,118 +1450,117 @@ static const struct afs_call_type yfs_RXYFSReleaseLock = {
/*
* Set a lock on a file
*/
-int yfs_fs_set_lock(struct afs_fs_cursor *fc, afs_lock_type_t type,
- struct afs_status_cb *scb)
+void yfs_fs_set_lock(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
_enter("");
- call = afs_alloc_flat_call(net, &yfs_RXYFSSetLock,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSSetLock,
sizeof(__be32) * 2 +
sizeof(struct yfs_xdr_YFSFid) +
sizeof(__be32),
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSVolSync));
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->lvnode = vnode;
- call->out_scb = scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSSETLOCK);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &vnode->fid);
- bp = xdr_encode_u32(bp, type);
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ bp = xdr_encode_u32(bp, op->lock.type);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_calli(call, &vnode->fid, type);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_calli(call, &vp->fid, op->lock.type);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
* extend a lock on a file
*/
-int yfs_fs_extend_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
+void yfs_fs_extend_lock(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
_enter("");
- call = afs_alloc_flat_call(net, &yfs_RXYFSExtendLock,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSExtendLock,
sizeof(__be32) * 2 +
sizeof(struct yfs_xdr_YFSFid),
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSVolSync));
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->lvnode = vnode;
- call->out_scb = scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSEXTENDLOCK);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &vnode->fid);
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
* release a lock on a file
*/
-int yfs_fs_release_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
+void yfs_fs_release_lock(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
_enter("");
- call = afs_alloc_flat_call(net, &yfs_RXYFSReleaseLock,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSReleaseLock,
sizeof(__be32) * 2 +
sizeof(struct yfs_xdr_YFSFid),
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSVolSync));
if (!call)
- return -ENOMEM;
-
- call->key = fc->key;
- call->lvnode = vnode;
- call->out_scb = scb;
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSRELEASELOCK);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &vnode->fid);
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
+}
+
+/*
+ * Deliver a reply to YFS.FetchStatus
+ */
+static int yfs_deliver_fs_fetch_status(struct afs_call *call)
+{
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
+ const __be32 *bp;
+ int ret;
+
+ ret = afs_transfer_reply(call);
+ if (ret < 0)
+ return ret;
+
+ /* unmarshall the reply once we've received all of it */
+ bp = call->buffer;
+ xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_YFSCallBack(&bp, call, &vp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
+
+ _leave(" = 0 [done]");
+ return 0;
}
/*
@@ -1750,52 +1569,40 @@ int yfs_fs_release_lock(struct afs_fs_cursor *fc, struct afs_status_cb *scb)
static const struct afs_call_type yfs_RXYFSFetchStatus = {
.name = "YFS.FetchStatus",
.op = yfs_FS_FetchStatus,
- .deliver = yfs_deliver_fs_status_cb_and_volsync,
+ .deliver = yfs_deliver_fs_fetch_status,
.destructor = afs_flat_call_destructor,
};
/*
* Fetch the status information for a fid without needing a vnode handle.
*/
-int yfs_fs_fetch_status(struct afs_fs_cursor *fc,
- struct afs_net *net,
- struct afs_fid *fid,
- struct afs_status_cb *scb,
- struct afs_volsync *volsync)
+void yfs_fs_fetch_status(struct afs_operation *op)
{
+ struct afs_vnode_param *vp = &op->file[op->fetch_status.which];
struct afs_call *call;
__be32 *bp;
_enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), fid->vid, fid->vnode);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- call = afs_alloc_flat_call(net, &yfs_RXYFSFetchStatus,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchStatus,
sizeof(__be32) * 2 +
sizeof(struct yfs_xdr_YFSFid),
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSCallBack) +
sizeof(struct yfs_xdr_YFSVolSync));
- if (!call) {
- fc->ac.error = -ENOMEM;
- return -ENOMEM;
- }
-
- call->key = fc->key;
- call->out_scb = scb;
- call->out_volsync = volsync;
+ if (!call)
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSFETCHSTATUS);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, fid);
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, fid);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -1803,6 +1610,7 @@ int yfs_fs_fetch_status(struct afs_fs_cursor *fc,
*/
static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
{
+ struct afs_operation *op = call->op;
struct afs_status_cb *scb;
const __be32 *bp;
u32 tmp;
@@ -1824,10 +1632,9 @@ static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
return ret;
tmp = ntohl(call->tmp);
- _debug("status count: %u/%u", tmp, call->count2);
- if (tmp != call->count2)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_ibulkst_count);
+ _debug("status count: %u/%u", tmp, op->nr_files);
+ if (tmp != op->nr_files)
+ return afs_protocol_error(call, afs_eproto_ibulkst_count);
call->count = 0;
call->unmarshall++;
@@ -1841,14 +1648,23 @@ static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
if (ret < 0)
return ret;
+ switch (call->count) {
+ case 0:
+ scb = &op->file[0].scb;
+ break;
+ case 1:
+ scb = &op->file[1].scb;
+ break;
+ default:
+ scb = &op->more_files[call->count - 2].scb;
+ break;
+ }
+
bp = call->buffer;
- scb = &call->out_scb[call->count];
- ret = xdr_decode_YFSFetchStatus(&bp, call, scb);
- if (ret < 0)
- return ret;
+ xdr_decode_YFSFetchStatus(&bp, call, scb);
call->count++;
- if (call->count < call->count2)
+ if (call->count < op->nr_files)
goto more_counts;
call->count = 0;
@@ -1865,9 +1681,8 @@ static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
tmp = ntohl(call->tmp);
_debug("CB count: %u", tmp);
- if (tmp != call->count2)
- return afs_protocol_error(call, -EBADMSG,
- afs_eproto_ibulkst_cb_count);
+ if (tmp != op->nr_files)
+ return afs_protocol_error(call, afs_eproto_ibulkst_cb_count);
call->count = 0;
call->unmarshall++;
more_cbs:
@@ -1881,11 +1696,22 @@ static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
return ret;
_debug("unmarshall CB array");
+ switch (call->count) {
+ case 0:
+ scb = &op->file[0].scb;
+ break;
+ case 1:
+ scb = &op->file[1].scb;
+ break;
+ default:
+ scb = &op->more_files[call->count - 2].scb;
+ break;
+ }
+
bp = call->buffer;
- scb = &call->out_scb[call->count];
xdr_decode_YFSCallBack(&bp, call, scb);
call->count++;
- if (call->count < call->count2)
+ if (call->count < op->nr_files)
goto more_cbs;
afs_extract_to_buf(call, sizeof(struct yfs_xdr_YFSVolSync));
@@ -1898,7 +1724,7 @@ static int yfs_deliver_fs_inline_bulk_status(struct afs_call *call)
return ret;
bp = call->buffer;
- xdr_decode_YFSVolSync(&bp, call->out_volsync);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
call->unmarshall++;
/* Fall through */
@@ -1924,50 +1750,39 @@ static const struct afs_call_type yfs_RXYFSInlineBulkStatus = {
/*
* Fetch the status information for up to 1024 files
*/
-int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
- struct afs_net *net,
- struct afs_fid *fids,
- struct afs_status_cb *statuses,
- unsigned int nr_fids,
- struct afs_volsync *volsync)
+void yfs_fs_inline_bulk_status(struct afs_operation *op)
{
+ struct afs_vnode_param *dvp = &op->file[0];
+ struct afs_vnode_param *vp = &op->file[1];
struct afs_call *call;
__be32 *bp;
int i;
_enter(",%x,{%llx:%llu},%u",
- key_serial(fc->key), fids[0].vid, fids[1].vnode, nr_fids);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode, op->nr_files);
- call = afs_alloc_flat_call(net, &yfs_RXYFSInlineBulkStatus,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSInlineBulkStatus,
sizeof(__be32) +
sizeof(__be32) +
sizeof(__be32) +
- sizeof(struct yfs_xdr_YFSFid) * nr_fids,
+ sizeof(struct yfs_xdr_YFSFid) * op->nr_files,
sizeof(struct yfs_xdr_YFSFetchStatus));
- if (!call) {
- fc->ac.error = -ENOMEM;
- return -ENOMEM;
- }
-
- call->key = fc->key;
- call->out_scb = statuses;
- call->out_volsync = volsync;
- call->count2 = nr_fids;
+ if (!call)
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSINLINEBULKSTATUS);
bp = xdr_encode_u32(bp, 0); /* RPCFlags */
- bp = xdr_encode_u32(bp, nr_fids);
- for (i = 0; i < nr_fids; i++)
- bp = xdr_encode_YFSFid(bp, &fids[i]);
+ bp = xdr_encode_u32(bp, op->nr_files);
+ bp = xdr_encode_YFSFid(bp, &dvp->fid);
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
+ for (i = 0; i < op->nr_files - 2; i++)
+ bp = xdr_encode_YFSFid(bp, &op->more_files[i].fid);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &fids[0]);
- afs_set_fc_call(call, fc);
- afs_make_call(&fc->ac, call, GFP_NOFS);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_NOFS);
}
/*
@@ -1975,7 +1790,9 @@ int yfs_fs_inline_bulk_status(struct afs_fs_cursor *fc,
*/
static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call)
{
- struct yfs_acl *yacl = call->out_yacl;
+ struct afs_operation *op = call->op;
+ struct afs_vnode_param *vp = &op->file[0];
+ struct yfs_acl *yacl = op->yacl;
struct afs_acl *acl;
const __be32 *bp;
unsigned int size;
@@ -2065,10 +1882,8 @@ static int yfs_deliver_fs_fetch_opaque_acl(struct afs_call *call)
bp = call->buffer;
yacl->inherit_flag = ntohl(*bp++);
yacl->num_cleaned = ntohl(*bp++);
- ret = xdr_decode_YFSFetchStatus(&bp, call, call->out_scb);
- if (ret < 0)
- return ret;
- xdr_decode_YFSVolSync(&bp, call->out_volsync);
+ xdr_decode_YFSFetchStatus(&bp, call, &vp->scb);
+ xdr_decode_YFSVolSync(&bp, &op->volsync);
call->unmarshall++;
/* Fall through */
@@ -2103,45 +1918,33 @@ static const struct afs_call_type yfs_RXYFSFetchOpaqueACL = {
/*
* Fetch the YFS advanced ACLs for a file.
*/
-struct yfs_acl *yfs_fs_fetch_opaque_acl(struct afs_fs_cursor *fc,
- struct yfs_acl *yacl,
- struct afs_status_cb *scb)
+void yfs_fs_fetch_opaque_acl(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
__be32 *bp;
_enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
- call = afs_alloc_flat_call(net, &yfs_RXYFSFetchOpaqueACL,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSFetchOpaqueACL,
sizeof(__be32) * 2 +
sizeof(struct yfs_xdr_YFSFid),
sizeof(__be32) * 2 +
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSVolSync));
- if (!call) {
- fc->ac.error = -ENOMEM;
- return ERR_PTR(-ENOMEM);
- }
-
- call->key = fc->key;
- call->out_yacl = yacl;
- call->out_scb = scb;
- call->out_volsync = NULL;
+ if (!call)
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSFETCHOPAQUEACL);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &vnode->fid);
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
yfs_check_req(call, bp);
- afs_use_fs_server(call, fc->cbi);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_make_call(&fc->ac, call, GFP_KERNEL);
- return (struct yfs_acl *)afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_KERNEL);
}
/*
@@ -2157,46 +1960,38 @@ static const struct afs_call_type yfs_RXYFSStoreOpaqueACL2 = {
/*
* Fetch the YFS ACL for a file.
*/
-int yfs_fs_store_opaque_acl2(struct afs_fs_cursor *fc, const struct afs_acl *acl,
- struct afs_status_cb *scb)
+void yfs_fs_store_opaque_acl2(struct afs_operation *op)
{
- struct afs_vnode *vnode = fc->vnode;
+ struct afs_vnode_param *vp = &op->file[0];
struct afs_call *call;
- struct afs_net *net = afs_v2net(vnode);
+ struct afs_acl *acl = op->acl;
size_t size;
__be32 *bp;
_enter(",%x,{%llx:%llu},,",
- key_serial(fc->key), vnode->fid.vid, vnode->fid.vnode);
+ key_serial(op->key), vp->fid.vid, vp->fid.vnode);
size = round_up(acl->size, 4);
- call = afs_alloc_flat_call(net, &yfs_RXYFSStoreOpaqueACL2,
+ call = afs_alloc_flat_call(op->net, &yfs_RXYFSStoreOpaqueACL2,
sizeof(__be32) * 2 +
sizeof(struct yfs_xdr_YFSFid) +
sizeof(__be32) + size,
sizeof(struct yfs_xdr_YFSFetchStatus) +
sizeof(struct yfs_xdr_YFSVolSync));
- if (!call) {
- fc->ac.error = -ENOMEM;
- return -ENOMEM;
- }
-
- call->key = fc->key;
- call->out_scb = scb;
- call->out_volsync = NULL;
+ if (!call)
+ return afs_op_nomem(op);
/* marshall the parameters */
bp = call->request;
bp = xdr_encode_u32(bp, YFSSTOREOPAQUEACL2);
bp = xdr_encode_u32(bp, 0); /* RPC flags */
- bp = xdr_encode_YFSFid(bp, &vnode->fid);
+ bp = xdr_encode_YFSFid(bp, &vp->fid);
bp = xdr_encode_u32(bp, acl->size);
memcpy(bp, acl->data, acl->size);
if (acl->size != size)
memset((void *)bp + acl->size, 0, size - acl->size);
yfs_check_req(call, bp);
- trace_afs_make_fs_call(call, &vnode->fid);
- afs_make_call(&fc->ac, call, GFP_KERNEL);
- return afs_wait_for_call_to_complete(call, &fc->ac);
+ trace_afs_make_fs_call(call, &vp->fid);
+ afs_make_op_call(op, call, GFP_KERNEL);
}