69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
/*
|
|
* Copyright (c) International Business Machines Corp., 2001
|
|
*/
|
|
|
|
/*\
|
|
* [Description]
|
|
*
|
|
* Check that:
|
|
* - fork() in parent returns the same pid as getpid() in child
|
|
* - getppid() in child returns the same pid as getpid() in parent
|
|
*/
|
|
|
|
#include <errno.h>
|
|
|
|
#include "tst_test.h"
|
|
|
|
static pid_t *child_pid;
|
|
|
|
static void verify_getpid(void)
|
|
{
|
|
pid_t proc_id;
|
|
pid_t pid;
|
|
pid_t pproc_id;
|
|
|
|
proc_id = getpid();
|
|
pid = SAFE_FORK();
|
|
|
|
if (pid == 0) {
|
|
pproc_id = getppid();
|
|
|
|
if (pproc_id != proc_id) {
|
|
tst_res(TFAIL, "child getppid() (%d) != parent getpid() (%d)",
|
|
pproc_id, proc_id);
|
|
} else {
|
|
tst_res(TPASS, "child getppid() == parent getpid() (%d)", proc_id);
|
|
}
|
|
|
|
*child_pid = getpid();
|
|
|
|
return;
|
|
}
|
|
|
|
tst_reap_children();
|
|
|
|
if (*child_pid != pid)
|
|
tst_res(TFAIL, "child getpid() (%d) != parent fork() (%d)", *child_pid, pid);
|
|
else
|
|
tst_res(TPASS, "child getpid() == parent fork() (%d)", pid);
|
|
}
|
|
|
|
static void setup(void)
|
|
{
|
|
child_pid = SAFE_MMAP(NULL, sizeof(pid_t), PROT_READ | PROT_WRITE,
|
|
MAP_ANONYMOUS | MAP_SHARED, -1, 0);
|
|
}
|
|
|
|
static void cleanup(void)
|
|
{
|
|
SAFE_MUNMAP(child_pid, sizeof(pid_t));
|
|
}
|
|
|
|
static struct tst_test test = {
|
|
.forks_child = 1,
|
|
.setup = setup,
|
|
.cleanup = cleanup,
|
|
.test_all = verify_getpid,
|
|
};
|