[172/272] Fix prlimit64 for suid/sgid processes

Greg KH
2011-02-16T00:44:52Z

From: Kacper Kornet <kornet@camk.edu.pl>

commit aa5bd67dcfdf9af34c7fa36ebc87d4e1f7e91873 upstream.

Since check_prlimit_permission always fails in the case of SUID/GUID
processes, such processes are not able to read or set their own limits.
This commit changes this by assuming that process can always read/change
its own limits.

Signed-off-by: Kacper Kornet <kornet@camk.edu.pl>
Acked-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

---
kernel/sys.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)

--- a/kernel/sys.c
+++ b/kernel/sys.c
@@ -1377,7 +1377,8 @@ static int check_prlimit_permission(stru
const struct cred *cred = current_cred(), *tcred;

tcred = __task_cred(task);
- if ((cred->uid != tcred->euid ||
+ if (current != task &&
+ (cred->uid != tcred->euid ||
cred->uid != tcred->suid ||
cred->uid != tcred->uid ||
cred->gid != tcred->egid ||