diff options
| author | Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com> | 2013-06-25 11:03:56 +0200 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2013-06-25 19:04:38 +0200 |
| commit | bf2883339a33b7544b92ea465b90c3de55082032 (patch) | |
| tree | ade69be0d8eadfda272ef5c48eb38f448c8731c9 | |
| parent | pstore/ram: remove the power of buffer size limitation (diff) | |
| download | linux-bf2883339a33b7544b92ea465b90c3de55082032.tar.xz linux-bf2883339a33b7544b92ea465b90c3de55082032.zip | |
pstore: Fail to unlink if a driver has not defined pstore_erase
pstore_erase is used to erase the record from the persistent store.
So if a driver has not defined pstore_erase callback return
-EPERM instead of unlinking a file as deleting the file without
erasing its record in persistent store will give a wrong impression
to customers.
Signed-off-by: Aruna Balakrishnaiah <aruna@linux.vnet.ibm.com>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Tony Luck <tony.luck@intel.com>
| -rw-r--r-- | fs/pstore/inode.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/pstore/inode.c b/fs/pstore/inode.c index e4bcb2cf055a..bfd95bf38005 100644 --- a/fs/pstore/inode.c +++ b/fs/pstore/inode.c @@ -178,6 +178,8 @@ static int pstore_unlink(struct inode *dir, struct dentry *dentry) if (p->psi->erase) p->psi->erase(p->type, p->id, p->count, dentry->d_inode->i_ctime, p->psi); + else + return -EPERM; return simple_unlink(dir, dentry); } |