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cifs: don't attempt busy-file rename unless it's in same directory

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Busy-file renames don't actually work across directories, so we need
to limit this code to renames within the same dir.

This fixes the bug detailed here:

    https://bugzilla.redhat.com/show_bug.cgi?id=591938

Signed-off-by: Jeff Layton <jlayton@redhat.com>
CC: Stable <stable@kernel.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
This commit is contained in:
Jeff Layton 2010-06-01 16:21:01 -04:00 committed by Steve French
parent 6c5de280b6
commit ed0e3ace57
1 changed files with 4 additions and 0 deletions
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4
fs/cifs/inode.c
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@ -1401,6 +1401,10 @@ cifs_do_rename(int xid, struct dentry *from_dentry, const char *fromPath,
if (rc == 0 || rc != -ETXTBSY)
return rc;
/* open-file renames don't work across directories */
if (to_dentry->d_parent != from_dentry->d_parent)
return rc;
/* open the file to be renamed -- we need DELETE perms */
rc = CIFSSMBOpen(xid, pTcon, fromPath, FILE_OPEN, DELETE,
CREATE_NOT_DIR, &srcfid, &oplock, NULL,