From 18add6a9bdc4109deb88a14afc83bba1239d8865 Mon Sep 17 00:00:00 2001
From: NAKAMURA Gou <go.nakamura.yw@hitachi-solutions.com>
Date: Mon, 28 Mar 2016 15:55:44 +0900
Subject: [PATCH] shmctl(IPC_RMID): fix wrong owner/creator checking (revised)

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 15701cac..b90eeee6 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>
@@ -3785,7 +3786,8 @@ 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);