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Fix match_prepath() 

Incorrect return value for shares not using the prefix path means that
we will never match superblocks for these shares.

Fixes: commit c1d8b24d18 ("Compare prepaths when comparing superblocks")
Cc: stable@vger.kernel.org
Signed-off-by: Sachin Prabhu <sprabhu@redhat.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Sachin Prabhu 2017-04-26 14:05:46 +01:00 committed by Steve French
parent 19ac447420
commit cd8c42968e
1 changed files with 6 additions and 8 deletions
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14
fs/cifs/connect.c
View File

@ -2912,16 +2912,14 @@ match_prepath(struct super_block *sb, struct cifs_mnt_data *mnt_data)
{
struct cifs_sb_info *old = CIFS_SB(sb);
struct cifs_sb_info *new = mnt_data->cifs_sb;
bool old_set = old->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH;
bool new_set = new->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH;
if (old->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH) {
if (!(new->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH))
return 0;
/* The prepath should be null terminated strings */
if (strcmp(new->prepath, old->prepath))
return 0;
if (old_set && new_set && !strcmp(new->prepath, old->prepath))
return 1;
}
else if (!old_set && !new_set)
return 1;
return 0;
}