From 8b5b075f4c56e8a2deeea714be73017cdabb3393 Mon Sep 17 00:00:00 2001
From: NAKAMURA Gou <go.nakamura.yw@hitachi-solutions.com>
Date: Thu, 10 Mar 2016 20:26:48 +0900
Subject: [PATCH] shmctl(IPC_RMID): fix wrong owner/creator checking

Don't check owner/creator of the segment in case of superuser.
---
 kernel/syscall.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/kernel/syscall.c b/kernel/syscall.c
index d6aeee17..d95a5e90 100644
--- a/kernel/syscall.c
+++ b/kernel/syscall.c
@@ -51,6 +51,7 @@
 #include <limits.h>
 #include <mc_perf_event.h>
 #include <march.h>
+#include <process.h>
 
 /* Headers taken from kitten LWK */
 #include <lwk/stddef.h>
@@ -3816,7 +3817,8 @@ SYSCALL_DECLARE(shmctl)
 			dkprintf("shmctl(%#x,%d,%p): lookup: %d\n", shmid, cmd, buf, error);
 			return error;
 		}
-		if ((obj->ds.shm_perm.uid != proc->euid)
+		if (!has_cap_sys_admin(thread)
+				&& (obj->ds.shm_perm.uid != proc->euid)
 				&& (obj->ds.shm_perm.cuid != proc->euid)) {
 			shmobj_list_unlock();
 			dkprintf("shmctl(%#x,%d,%p): -EPERM\n", shmid, cmd, buf);