]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/commit
CRED: Fix NFSD regression
authorDavid Howells <dhowells@redhat.com>
Mon, 5 Jan 2009 17:19:37 +0000 (17:19 +0000)
committerJ. Bruce Fields <bfields@citi.umich.edu>
Wed, 7 Jan 2009 20:40:44 +0000 (15:40 -0500)
commitf05ef8db1abe68e3f6fc272efee51bc54ce528c5
tree8e74dfecce221e51ec3631c66c0e4f8ce589b566
parent0dba7c2a9ed3d4a1e58f5d94fffa9f44dbe012e6
CRED: Fix NFSD regression

Fix a regression in NFSD's permission checking introduced by the credentials
patches.  There are two parts to the problem, both in nfsd_setuser():

 (1) The return value of set_groups() is -ve if in error, not 0, and should be
     checked appropriately.  0 indicates success.

 (2) The UID to use for fs accesses is in new->fsuid, not new->uid (which is
     0).  This causes CAP_DAC_OVERRIDE to always be set, rather than being
     cleared if the UID is anything other than 0 after squashing.

Reported-by: J. Bruce Fields <bfields@fieldses.org>
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
fs/nfsd/auth.c