linux-stable-rt/fs/ext2
Bryan Donlan 4d6c13f87d ext2: return -EIO not -ESTALE on directory traversal through deleted inode
ext2_iget() returns -ESTALE if invoked on a deleted inode, in order to
report errors to NFS properly.  However, in ext[234]_lookup(), this
-ESTALE can be propagated to userspace if the filesystem is corrupted such
that a directory entry references a deleted inode.  This leads to a
misleading error message - "Stale NFS file handle" - and confusion on the
part of the admin.

The bug can be easily reproduced by creating a new filesystem, making a
link to an unused inode using debugfs, then mounting and attempting to ls
-l said link.

This patch thus changes ext2_lookup to return -EIO if it receives -ESTALE
from ext2_iget(), as ext2 does for other filesystem metadata corruption;
and also invokes the appropriate ext*_error functions when this case is
detected.

Signed-off-by: Bryan Donlan <bdonlan@gmail.com>
Cc: <linux-ext4@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-06-30 18:56:00 -07:00
..
Kconfig
Makefile
acl.c helpers for acl caching + switch to those 2009-06-24 08:17:07 -04:00
acl.h switch ext2 to inode->i_acl 2009-06-24 08:15:28 -04:00
balloc.c
dir.c
ext2.h switch ext2 to inode->i_acl 2009-06-24 08:15:28 -04:00
file.c
ialloc.c
inode.c switch ext2 to inode->i_acl 2009-06-24 08:15:28 -04:00
ioctl.c
namei.c ext2: return -EIO not -ESTALE on directory traversal through deleted inode 2009-06-30 18:56:00 -07:00
super.c switch ext2 to inode->i_acl 2009-06-24 08:15:28 -04:00
symlink.c
xattr.c
xattr.h
xattr_security.c
xattr_trusted.c
xattr_user.c
xip.c
xip.h