53 lines
1.2 KiB
C
53 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0-later
|
|
/*
|
|
* Copyright (c) International Business Machines Corp., 2001
|
|
* Ported by John George
|
|
* Copyright (c) 2023 SUSE LLC Avinesh Kumar <avinesh.kumar@suse.com>
|
|
*/
|
|
|
|
/*\
|
|
* [Description]
|
|
*
|
|
* Verify that setreuid(2) syscall fails with EPERM errno when the calling
|
|
* process is not privileged and a change other than
|
|
* (i) swapping the effective user ID with the real user ID, or
|
|
* (ii) setting one to the value of the other or
|
|
* (iii) setting the effective user ID to the value of the saved set-user-ID
|
|
* was specified.
|
|
*/
|
|
|
|
#include <pwd.h>
|
|
#include "tst_test.h"
|
|
#include "tst_uid.h"
|
|
#include "compat_tst_16.h"
|
|
|
|
static struct passwd *ltpuser;
|
|
static uid_t other_uid;
|
|
|
|
static void setup(void)
|
|
{
|
|
tst_get_uids(&other_uid, 0, 1);
|
|
|
|
UID16_CHECK(other_uid, setreuid);
|
|
|
|
ltpuser = SAFE_GETPWNAM("nobody");
|
|
SAFE_SETUID(ltpuser->pw_uid);
|
|
}
|
|
|
|
static void run(void)
|
|
{
|
|
|
|
TST_EXP_FAIL(SETREUID(-1, other_uid), EPERM,
|
|
"setreuid(%d, %d)", -1, other_uid);
|
|
TST_EXP_FAIL(SETREUID(other_uid, -1), EPERM,
|
|
"setreuid(%d, %d)", other_uid, -1);
|
|
TST_EXP_FAIL(SETREUID(other_uid, other_uid), EPERM,
|
|
"setreuid(%d, %d)", other_uid, other_uid);
|
|
}
|
|
|
|
static struct tst_test test = {
|
|
.setup = setup,
|
|
.test_all = run,
|
|
.needs_root = 1
|
|
};
|