tools/testing/selftests/ipc/msgque.c: improve error handling when not running as...

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@samsung.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Davidlohr Bueso <davidlohr@hp.com>
Cc: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/tools/testing/selftests/ipc/msgque.c b/tools/testing/selftests/ipc/msgque.c
index aa290c0de6f56d9e3f142d46124ee5d0688dd68d..552f0810bffb651274271aef05db718507af5605 100644 (file)
--- 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");