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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) International Business Machines Corp., 2001
* Copyright (c) 2013 Oracle and/or its affiliates. All Rights Reserved.
* Copyright (c) 2014 Cyril Hrubis <chrubis@suse.cz>
* Copyright (C) 2021 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com>
*/
/*\
* [Description]
*
* Tests setpgid(2) errors:
*
* - EPERM The process specified by pid must not be a session leader.
*
* - EPERM The calling process, process specified by pid and the target
* process group must be in the same session.
*
* - EACCESS Proccess cannot change process group ID of a child after child
* has performed exec()
*/
#include <unistd.h>
#include <sys/wait.h>
#include "tst_test.h"
#define TEST_APP "setpgid03_child"
static void do_child(void)
{
SAFE_SETSID();
TST_CHECKPOINT_WAKE_AND_WAIT(0);
}
static void run(void)
{
pid_t child_pid;
child_pid = SAFE_FORK();
if (!child_pid) {
do_child();
return;
}
TST_CHECKPOINT_WAIT(0);
TST_EXP_FAIL(setpgid(child_pid, getppid()), EPERM);
/* Child did setsid(), so its PGID is set to its PID. */
TST_EXP_FAIL(setpgid(0, child_pid), EPERM);
TST_CHECKPOINT_WAKE(0);
/* child after exec() we are no longer allowed to set pgid */
child_pid = SAFE_FORK();
if (!child_pid)
SAFE_EXECLP(TEST_APP, TEST_APP, NULL);
TST_CHECKPOINT_WAIT(0);
TST_EXP_FAIL(setpgid(child_pid, getppid()), EACCES);
TST_CHECKPOINT_WAKE(0);
}
static struct tst_test test = {
.test_all = run,
.forks_child = 1,
.needs_checkpoints = 1,
};
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