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authorCyrill Gorcunov <gorcunov@openvz.org>2012-07-30 14:43:00 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-07-30 17:25:21 -0700
commit1d151c337d79fa3de88654d2514f58fbd916a8e0 (patch)
tree79f96ea4b081f310aa62246e879224467b092261 /security
parent65fed8f6f23070b56d0ed3841173ddd410130a89 (diff)
downloadlinux-1d151c337d79fa3de88654d2514f58fbd916a8e0.tar.gz
c/r: fcntl: add F_GETOWNER_UIDS option
When we restore file descriptors we would like them to look exactly as they were at dumping time. With help of fcntl it's almost possible, the missing snippet is file owners UIDs. To be able to read their values the F_GETOWNER_UIDS is introduced. This option is valid iif CONFIG_CHECKPOINT_RESTORE is turned on, otherwise returning -EINVAL. Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org> Acked-by: "Eric W. Biederman" <ebiederm@xmission.com> Cc: "Serge E. Hallyn" <serge@hallyn.com> Cc: Oleg Nesterov <oleg@redhat.com> Cc: Pavel Emelyanov <xemul@parallels.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'security')
-rw-r--r--security/selinux/hooks.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 94c45a1531a..ec43760a8a0 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -3180,6 +3180,7 @@ static int selinux_file_fcntl(struct file *file, unsigned int cmd,
case F_GETFL:
case F_GETOWN:
case F_GETSIG:
+ case F_GETOWNER_UIDS:
/* Just check FD__USE permission */
err = file_has_perm(cred, file, 0);
break;