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authorMatthew Garrett <mjg@redhat.com>2011-07-21 16:57:52 -0400
committerTony Luck <tony.luck@intel.com>2011-07-22 16:14:06 -0700
commit638c1fd3033c76778e6d9975ad8a4a9cdd5b96d9 (patch)
treede8b772157162b8a7a0901f4df5fb25faef6b21d /fs/pstore
parent02f8c6aee8df3cdc935e9bdd4f2d020306035dbe (diff)
downloadlinux-638c1fd3033c76778e6d9975ad8a4a9cdd5b96d9.tar.bz2
pstore: Extend API for more flexibility in new backends
Some pstore implementations may not have a static context, so extend the API to pass the pstore_info struct to all calls and allow for a context pointer. Signed-off-by: Matthew Garrett <mjg@redhat.com> Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'fs/pstore')
-rw-r--r--fs/pstore/inode.c10
-rw-r--r--fs/pstore/internal.h2
-rw-r--r--fs/pstore/platform.c13
3 files changed, 13 insertions, 12 deletions
diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c
index 977ed2723845..b19884a1ba77 100644
--- a/fs/pstore/inode.c
+++ b/fs/pstore/inode.c
@@ -40,7 +40,7 @@
struct pstore_private {
u64 id;
- int (*erase)(u64);
+ struct pstore_info *psi;
ssize_t size;
char data[];
};
@@ -73,7 +73,7 @@ static int pstore_unlink(struct inode *dir, struct dentry *dentry)
{
struct pstore_private *p = dentry->d_inode->i_private;
- p->erase(p->id);
+ p->psi->erase(p->id, p->psi);
return simple_unlink(dir, dentry);
}
@@ -175,8 +175,8 @@ int pstore_is_mounted(void)
* Set the mtime & ctime to the date that this record was originally stored.
*/
int pstore_mkfile(enum pstore_type_id type, char *psname, u64 id,
- char *data, size_t size,
- struct timespec time, int (*erase)(u64))
+ char *data, size_t size, struct timespec time,
+ struct pstore_info *psi)
{
struct dentry *root = pstore_sb->s_root;
struct dentry *dentry;
@@ -193,7 +193,7 @@ int pstore_mkfile(enum pstore_type_id type, char *psname, u64 id,
if (!private)
goto fail_alloc;
private->id = id;
- private->erase = erase;
+ private->psi = psi;
switch (type) {
case PSTORE_TYPE_DMESG:
diff --git a/fs/pstore/internal.h b/fs/pstore/internal.h
index 8c9f23eb1645..611c1b3c46fa 100644
--- a/fs/pstore/internal.h
+++ b/fs/pstore/internal.h
@@ -2,5 +2,5 @@ extern void pstore_set_kmsg_bytes(int);
extern void pstore_get_records(void);
extern int pstore_mkfile(enum pstore_type_id, char *psname, u64 id,
char *data, size_t size,
- struct timespec time, int (*erase)(u64));
+ struct timespec time, struct pstore_info *psi);
extern int pstore_is_mounted(void);
diff --git a/fs/pstore/platform.c b/fs/pstore/platform.c
index f2c3ff20ea68..221c04e5e333 100644
--- a/fs/pstore/platform.c
+++ b/fs/pstore/platform.c
@@ -94,11 +94,12 @@ static void pstore_dump(struct kmsg_dumper *dumper,
memcpy(dst, s1 + s1_start, l1_cpy);
memcpy(dst + l1_cpy, s2 + s2_start, l2_cpy);
- id = psinfo->write(PSTORE_TYPE_DMESG, hsize + l1_cpy + l2_cpy);
+ id = psinfo->write(PSTORE_TYPE_DMESG, hsize + l1_cpy + l2_cpy,
+ psinfo);
if (reason == KMSG_DUMP_OOPS && pstore_is_mounted())
pstore_mkfile(PSTORE_TYPE_DMESG, psinfo->name, id,
psinfo->buf, hsize + l1_cpy + l2_cpy,
- CURRENT_TIME, psinfo->erase);
+ CURRENT_TIME, psinfo);
l1 -= l1_cpy;
l2 -= l2_cpy;
total += l1_cpy + l2_cpy;
@@ -166,9 +167,9 @@ void pstore_get_records(void)
if (rc)
goto out;
- while ((size = psi->read(&id, &type, &time)) > 0) {
+ while ((size = psi->read(&id, &type, &time, psi)) > 0) {
if (pstore_mkfile(type, psi->name, id, psi->buf, (size_t)size,
- time, psi->erase))
+ time, psi))
failed++;
}
psi->close(psi);
@@ -196,10 +197,10 @@ int pstore_write(enum pstore_type_id type, char *buf, size_t size)
mutex_lock(&psinfo->buf_mutex);
memcpy(psinfo->buf, buf, size);
- id = psinfo->write(type, size);
+ id = psinfo->write(type, size, psinfo);
if (pstore_is_mounted())
pstore_mkfile(PSTORE_TYPE_DMESG, psinfo->name, id, psinfo->buf,
- size, CURRENT_TIME, psinfo->erase);
+ size, CURRENT_TIME, psinfo);
mutex_unlock(&psinfo->buf_mutex);
return 0;