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/* Verify that the parent pid is unchanged by __clone_internal.
Copyright (C) 2021-2024 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <sched.h>
#include <signal.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/wait.h>
#include <clone_internal.h>
#include <support/xunistd.h>
#ifndef TEST_CLONE_FLAGS
#define TEST_CLONE_FLAGS 0
#endif
static int sig;
static int
f (void *a)
{
puts ("in f");
union sigval sival;
sival.sival_int = getpid ();
printf ("pid = %d\n", sival.sival_int);
if (sigqueue (getppid (), sig, sival) != 0)
return 1;
return 0;
}
static int
do_test (void)
{
int mypid = getpid ();
sig = SIGRTMIN;
sigset_t ss;
sigemptyset (&ss);
sigaddset (&ss, sig);
if (sigprocmask (SIG_BLOCK, &ss, NULL) != 0)
{
printf ("sigprocmask failed: %m\n");
return 1;
}
#define STACK_SIZE 128 * 1024
char st[STACK_SIZE] __attribute__ ((aligned));
struct clone_args clone_args =
{
.flags = TEST_CLONE_FLAGS & ~CSIGNAL,
.exit_signal = TEST_CLONE_FLAGS & CSIGNAL,
.stack = (uintptr_t) st,
.stack_size = sizeof (st),
};
pid_t p = __clone_internal (&clone_args, f, 0);
if (p == -1)
{
printf("clone failed: %m\n");
return 1;
}
printf ("new thread: %d\n", (int) p);
siginfo_t si;
do
if (sigwaitinfo (&ss, &si) < 0)
{
printf("sigwaitinfo failed: %m\n");
kill (p, SIGKILL);
return 1;
}
while (si.si_signo != sig || si.si_code != SI_QUEUE);
int e;
xwaitpid (p, &e, __WCLONE);
if (!WIFEXITED (e))
{
if (WIFSIGNALED (e))
printf ("died from signal %s\n", strsignal (WTERMSIG (e)));
else
puts ("did not terminate correctly");
return 1;
}
if (WEXITSTATUS (e) != 0)
{
printf ("exit code %d\n", WEXITSTATUS (e));
return 1;
}
if (si.si_int != (int) p)
{
printf ("expected PID %d, got si_int %d\n", (int) p, si.si_int);
kill (p, SIGKILL);
return 1;
}
if (si.si_pid != p)
{
printf ("expected PID %d, got si_pid %d\n", (int) p, (int) si.si_pid);
kill (p, SIGKILL);
return 1;
}
if (getpid () != mypid)
{
puts ("my PID changed");
return 1;
}
return 0;
}
#include <support/test-driver.c>
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