linux/fs/nfs
Frank Filz 7ee2cb7f32 nfs: Fix NFS v4 client handling of MAY_EXEC in nfs_permission.
The problem is that permission checking is skipped if atomic open is
possible, but when exec opens a file, it just opens it O_READONLY which
means EXEC permission will not be checked at that time.

This problem is observed by the following sequence (executed as root):

  mount -t nfs4 server:/ /mnt4
  echo "ls" >/mnt4/foo
  chmod 744 /mnt4/foo
  su guest -c "mnt4/foo"

Signed-off-by: Frank Filz <ffilzlnx@us.ibm.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
Tested-by: Eugene Teo <eugeneteo@kernel.sg>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2009-05-18 20:11:12 -07:00
..
callback.c
callback.h
callback_proc.c
callback_xdr.c
client.c NFS: Add mount options to enable local caching on NFS 2009-04-03 16:42:48 +01:00
delegation.c
delegation.h
dir.c nfs: Fix NFS v4 client handling of MAY_EXEC in nfs_permission. 2009-05-18 20:11:12 -07:00
direct.c
file.c NFS: Close page_mkwrite() races 2009-05-02 19:42:39 -07:00
fscache-index.c NFS: Add read context retention for FS-Cache to call back with 2009-04-03 16:42:44 +01:00
fscache.c NFS: Store pages from an NFS inode into a local cache 2009-04-03 16:42:45 +01:00
fscache.h NFS: Display local caching state 2009-04-03 16:42:47 +01:00
getroot.c
idmap.c
inode.c NFS: Use local disk inode cache 2009-04-03 16:42:43 +01:00
internal.h NFS: Add mount options to enable local caching on NFS 2009-04-03 16:42:48 +01:00
iostat.h NFS: Add some new I/O counters for FS-Cache doing things for NFS 2009-04-03 16:42:43 +01:00
Kconfig NFS: Permit local filesystem caching to be enabled for NFS 2009-04-03 16:42:42 +01:00
Makefile NFS: Define and create server-level objects 2009-04-03 16:42:42 +01:00
mount_clnt.c
namespace.c
nfs2xdr.c
nfs3acl.c
nfs3proc.c
nfs3xdr.c NFS: Fix the XDR iovec calculation in nfs3_xdr_setaclargs 2009-04-21 07:46:49 -07:00
nfs4_fs.h
nfs4namespace.c
nfs4proc.c
nfs4renewd.c
nfs4state.c
nfs4xdr.c
nfsroot.c
pagelist.c
proc.c
read.c NFS: Store pages from an NFS inode into a local cache 2009-04-03 16:42:45 +01:00
super.c Convert obvious places to deactivate_locked_super() 2009-05-09 10:49:40 -04:00
symlink.c
sysctl.c
unlink.c
write.c