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authorDavid Howells <dhowells@redhat.com>2018-05-18 11:46:15 +0100
committerDavid Howells <dhowells@redhat.com>2018-05-23 12:01:15 +0100
commit5b86d4ff5dce3271dff54119e06174dc22422903 (patch)
tree04916e2272e82554f18b8d442de0a14b9cf84558 /fs/afs/super.c
parent1588def91d58bf70afe1acf9fc0331fa26e974f4 (diff)
downloadlinux-5b86d4ff5dce3271dff54119e06174dc22422903.tar.bz2
afs: Implement network namespacing
Implement network namespacing within AFS, but don't yet let mounts occur outside the init namespace. An additional patch will be required propagate the network namespace across automounts. Signed-off-by: David Howells <dhowells@redhat.com>
Diffstat (limited to 'fs/afs/super.c')
-rw-r--r--fs/afs/super.c20
1 files changed, 12 insertions, 8 deletions
diff --git a/fs/afs/super.c b/fs/afs/super.c
index 65081ec3c36e..593820372848 100644
--- a/fs/afs/super.c
+++ b/fs/afs/super.c
@@ -48,6 +48,8 @@ struct file_system_type afs_fs_type = {
};
MODULE_ALIAS_FS("afs");
+int afs_net_id;
+
static const struct super_operations afs_super_ops = {
.statfs = afs_statfs,
.alloc_inode = afs_alloc_inode,
@@ -117,7 +119,7 @@ int __init afs_fs_init(void)
/*
* clean up the filesystem
*/
-void __exit afs_fs_exit(void)
+void afs_fs_exit(void)
{
_enter("");
@@ -351,7 +353,7 @@ static int afs_test_super(struct super_block *sb, void *data)
struct afs_super_info *as1 = data;
struct afs_super_info *as = AFS_FS_S(sb);
- return (as->net == as1->net &&
+ return (as->net_ns == as1->net_ns &&
as->volume &&
as->volume->vid == as1->volume->vid);
}
@@ -437,7 +439,7 @@ static struct afs_super_info *afs_alloc_sbi(struct afs_mount_params *params)
as = kzalloc(sizeof(struct afs_super_info), GFP_KERNEL);
if (as) {
- as->net = afs_get_net(params->net);
+ as->net_ns = get_net(params->net_ns);
if (params->dyn_root)
as->dyn_root = true;
else
@@ -450,8 +452,8 @@ static void afs_destroy_sbi(struct afs_super_info *as)
{
if (as) {
afs_put_volume(as->cell, as->volume);
- afs_put_cell(as->net, as->cell);
- afs_put_net(as->net);
+ afs_put_cell(afs_net(as->net_ns), as->cell);
+ put_net(as->net_ns);
kfree(as);
}
}
@@ -472,12 +474,13 @@ static struct dentry *afs_mount(struct file_system_type *fs_type,
_enter(",,%s,%p", dev_name, options);
memset(&params, 0, sizeof(params));
- params.net = &__afs_net;
ret = -EINVAL;
if (current->nsproxy->net_ns != &init_net)
goto error;
-
+ params.net_ns = current->nsproxy->net_ns;
+ params.net = afs_net(params.net_ns);
+
/* parse the options and device name */
if (options) {
ret = afs_parse_options(&params, options, &dev_name);
@@ -571,7 +574,8 @@ static void afs_kill_super(struct super_block *sb)
* deactivating the superblock.
*/
if (as->volume)
- afs_clear_callback_interests(as->net, as->volume->servers);
+ afs_clear_callback_interests(afs_net(as->net_ns),
+ as->volume->servers);
kill_anon_super(sb);
if (as->volume)
afs_deactivate_volume(as->volume);