56 lines
1.1 KiB
C
56 lines
1.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (c) International Business Machines Corp., 2001
|
|
* 07/2001 John George
|
|
* Copyright (C) 2015 Cyril Hrubis <chrubis@suse.cz>
|
|
*
|
|
* Check the return value, and errno of vhangup(2) when a non-root user calls
|
|
* vhangup().
|
|
*/
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <pwd.h>
|
|
#include <sys/wait.h>
|
|
|
|
#include "tst_test.h"
|
|
#include "lapi/syscalls.h"
|
|
|
|
static uid_t nobody_uid;
|
|
|
|
static void run(void)
|
|
{
|
|
pid_t pid;
|
|
int retval;
|
|
|
|
pid = SAFE_FORK();
|
|
if (pid > 0) {
|
|
waitpid(pid, NULL, 0);
|
|
} else {
|
|
retval = setreuid(nobody_uid, nobody_uid);
|
|
if (retval < 0)
|
|
tst_brk(TBROK | TTERRNO, "setreuid failed");
|
|
TEST(tst_syscall(__NR_vhangup));
|
|
if (TST_RET != -1)
|
|
tst_brk(TFAIL, "vhangup() failed to fail");
|
|
else if (TST_ERR == EPERM)
|
|
tst_res(TPASS, "Got EPERM as expected.");
|
|
else
|
|
tst_res(TFAIL, "expected EPERM got %d", TST_ERR);
|
|
}
|
|
}
|
|
|
|
static void setup(void)
|
|
{
|
|
struct passwd *pw;
|
|
|
|
pw = SAFE_GETPWNAM("nobody");
|
|
nobody_uid = pw->pw_uid;
|
|
}
|
|
|
|
static struct tst_test test = {
|
|
.test_all = run,
|
|
.setup = setup,
|
|
.needs_root = 1,
|
|
.forks_child = 1,
|
|
};
|