tree d3256d5a1e2a0276326f8abb2e6aabc3df3812da
parent 0ac68d17996eb421dde51452b89d5545ba07c6fe
author J. Bruce Fields <bfields@fieldses.org> 1184670277 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1184692987 -0700

knfsd: nfsd4: fix handling of acl errrors

nfs4_acl_nfsv4_to_posix() returns an error and returns any posix acls
calculated in two caller-provided pointers.  It was setting these pointers to
-errno in some error cases, resulting in nfsd4_set_nfs4_acl() calling
posix_acl_release() with a -errno as an argument.

Fix both the caller and the callee, by modifying nfsd4_set_nfs4_acl() to
stop relying on the passed-in-pointers being left as NULL in the error
case, and by modifying nfs4_acl_nfsv4_to_posix() to stop returning
garbage in those pointers.

Thanks to Alex Soule for reporting the bug.

Signed-off-by: "J. Bruce Fields" <bfields@citi.umich.edu>
Cc: Alexander Soule <soule@umich.edu>
Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>