linux-kernel - [PATCH v2] tools: msgque improve error handling when not running as root

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Date:	Wed, 25 Jun 2014 15:54:42 -0600
From:	Shuah Khan <shuah.kh@...sung.com>
To:	gregkh@...uxfoundation.org, akpm@...ux-foundation.org,
	davidlohr@...com, colin.king@...onical.com
Cc:	Shuah Khan <shuah.kh@...sung.com>, linux-kernel@...r.kernel.org
Subject: [PATCH v2] tools: msgque improve error handling when not running as root

The test fails in the middle when it is not run as root while
accessing /proc/sys/kernel/msg_next_id. Changed it to check
for root at the beginning of the test and exit if not root.

Signed-off-by: Shuah Khan <shuah.kh@...sung.com>
---
 tools/testing/selftests/ipc/msgque.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tools/testing/selftests/ipc/msgque.c b/tools/testing/selftests/ipc/msgque.c
index aa290c0..552f081 100644
--- a/tools/testing/selftests/ipc/msgque.c
+++ b/tools/testing/selftests/ipc/msgque.c
@@ -193,6 +193,11 @@ int main(int argc, char **argv)
 	int msg, pid, err;
 	struct msgque_data msgque;
 
+	if (getuid() != 0) {
+		printf("Please run the test as root - Exiting.\n");
+		exit(1);
+	}
+
 	msgque.key = ftok(argv[0], 822155650);
 	if (msgque.key == -1) {
 		printf("Can't make key\n");
-- 
1.9.1

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