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130 lines
3.0 KiB
C
130 lines
3.0 KiB
C
/* Verify that the parent pid is unchanged by __clone_internal.
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Copyright (C) 2021-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <sched.h>
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#include <signal.h>
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#include <string.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <clone_internal.h>
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#include <support/xunistd.h>
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#ifndef TEST_CLONE_FLAGS
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#define TEST_CLONE_FLAGS 0
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#endif
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static int sig;
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static int
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f (void *a)
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{
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puts ("in f");
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union sigval sival;
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sival.sival_int = getpid ();
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printf ("pid = %d\n", sival.sival_int);
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if (sigqueue (getppid (), sig, sival) != 0)
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return 1;
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return 0;
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}
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static int
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do_test (void)
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{
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int mypid = getpid ();
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sig = SIGRTMIN;
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sigset_t ss;
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sigemptyset (&ss);
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sigaddset (&ss, sig);
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if (sigprocmask (SIG_BLOCK, &ss, NULL) != 0)
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{
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printf ("sigprocmask failed: %m\n");
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return 1;
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}
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#define STACK_SIZE 128 * 1024
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char st[STACK_SIZE] __attribute__ ((aligned));
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struct clone_args clone_args =
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{
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.flags = TEST_CLONE_FLAGS & ~CSIGNAL,
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.exit_signal = TEST_CLONE_FLAGS & CSIGNAL,
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.stack = (uintptr_t) st,
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.stack_size = sizeof (st),
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};
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pid_t p = __clone_internal (&clone_args, f, 0);
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if (p == -1)
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{
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printf("clone failed: %m\n");
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return 1;
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}
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printf ("new thread: %d\n", (int) p);
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siginfo_t si;
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do
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if (sigwaitinfo (&ss, &si) < 0)
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{
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printf("sigwaitinfo failed: %m\n");
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kill (p, SIGKILL);
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return 1;
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}
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while (si.si_signo != sig || si.si_code != SI_QUEUE);
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int e;
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xwaitpid (p, &e, __WCLONE);
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if (!WIFEXITED (e))
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{
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if (WIFSIGNALED (e))
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printf ("died from signal %s\n", strsignal (WTERMSIG (e)));
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else
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puts ("did not terminate correctly");
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return 1;
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}
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if (WEXITSTATUS (e) != 0)
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{
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printf ("exit code %d\n", WEXITSTATUS (e));
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return 1;
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}
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if (si.si_int != (int) p)
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{
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printf ("expected PID %d, got si_int %d\n", (int) p, si.si_int);
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kill (p, SIGKILL);
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return 1;
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}
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if (si.si_pid != p)
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{
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printf ("expected PID %d, got si_pid %d\n", (int) p, (int) si.si_pid);
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kill (p, SIGKILL);
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return 1;
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}
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if (getpid () != mypid)
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{
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puts ("my PID changed");
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return 1;
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}
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return 0;
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}
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#include <support/test-driver.c>
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