1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3  * Copyright (c) International Business Machines Corp., 2001
4  */
5 
6 /* DESCRIPTION
7  *	This test will verify that setuid(2) syscall basic functionality.
8  *	setuid(2) returns a value of 0 and uid has been set successfully
9  *	as a normal or super user.
10  */
11 
12 #include <errno.h>
13 #include <unistd.h>
14 #include <sys/types.h>
15 #include "tst_test.h"
16 #include "compat_tst_16.h"
17 
verify_setuid(void)18 static void verify_setuid(void)
19 {
20 	uid_t uid;
21 
22 	/* Set the effective user ID to the current real uid */
23 	uid = getuid();
24 	UID16_CHECK(uid, setuid);
25 
26 	TEST(SETUID(uid));
27 	if (TST_RET == -1)
28 		tst_res(TFAIL | TTERRNO, "setuid(%d) failed", uid);
29 	else
30 		tst_res(TPASS, "setuid(%d) successfully", uid);
31 }
32 
33 static struct tst_test test = {
34 	.test_all = verify_setuid,
35 };
36