mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-05 03:01:05 +00:00
147 lines
3.9 KiB
C
147 lines
3.9 KiB
C
/* Test if CLONE_VM does not change pthread pid/tid field (BZ #19957)
|
|
Copyright (C) 2016-2020 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 <fcntl.h>
|
|
#include <unistd.h>
|
|
#include <stddef.h>
|
|
#include <stdbool.h>
|
|
#include <stdint.h>
|
|
#include <stdlib.h>
|
|
#include <sys/types.h>
|
|
#include <sys/wait.h>
|
|
#include <sys/syscall.h>
|
|
|
|
#include <stackinfo.h> /* For _STACK_GROWS_{UP,DOWN}. */
|
|
|
|
#include <support/check.h>
|
|
|
|
static int sig;
|
|
static int pipefd[2];
|
|
|
|
static int
|
|
f (void *a)
|
|
{
|
|
close (pipefd[0]);
|
|
|
|
pid_t ppid = getppid ();
|
|
pid_t pid = getpid ();
|
|
pid_t tid = syscall (__NR_gettid);
|
|
|
|
if (write (pipefd[1], &ppid, sizeof ppid) != sizeof (ppid))
|
|
FAIL_EXIT1 ("write ppid failed\n");
|
|
if (write (pipefd[1], &pid, sizeof pid) != sizeof (pid))
|
|
FAIL_EXIT1 ("write pid failed\n");
|
|
if (write (pipefd[1], &tid, sizeof tid) != sizeof (tid))
|
|
FAIL_EXIT1 ("write tid failed\n");
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
sig = SIGRTMIN;
|
|
sigset_t ss;
|
|
sigemptyset (&ss);
|
|
sigaddset (&ss, sig);
|
|
if (sigprocmask (SIG_BLOCK, &ss, NULL) != 0)
|
|
FAIL_EXIT1 ("sigprocmask failed: %m");
|
|
|
|
if (pipe2 (pipefd, O_CLOEXEC))
|
|
FAIL_EXIT1 ("pipe failed: %m");
|
|
|
|
int clone_flags = 0;
|
|
#ifdef __ia64__
|
|
extern int __clone2 (int (*__fn) (void *__arg), void *__child_stack_base,
|
|
size_t __child_stack_size, int __flags,
|
|
void *__arg, ...);
|
|
char st[256 * 1024] __attribute__ ((aligned));
|
|
pid_t p = __clone2 (f, st, sizeof (st), clone_flags, 0);
|
|
#else
|
|
char st[128 * 1024] __attribute__ ((aligned));
|
|
#if _STACK_GROWS_DOWN
|
|
pid_t p = clone (f, st + sizeof (st), clone_flags, 0);
|
|
#elif _STACK_GROWS_UP
|
|
pid_t p = clone (f, st, clone_flags, 0);
|
|
#else
|
|
#error "Define either _STACK_GROWS_DOWN or _STACK_GROWS_UP"
|
|
#endif
|
|
#endif
|
|
|
|
close (pipefd[1]);
|
|
|
|
if (p == -1)
|
|
FAIL_EXIT1("clone failed: %m");
|
|
|
|
pid_t ppid, pid, tid;
|
|
if (read (pipefd[0], &ppid, sizeof pid) != sizeof pid)
|
|
{
|
|
kill (p, SIGKILL);
|
|
FAIL_EXIT1 ("read ppid failed: %m");
|
|
}
|
|
if (read (pipefd[0], &pid, sizeof pid) != sizeof pid)
|
|
{
|
|
kill (p, SIGKILL);
|
|
FAIL_EXIT1 ("read pid failed: %m");
|
|
}
|
|
if (read (pipefd[0], &tid, sizeof tid) != sizeof tid)
|
|
{
|
|
kill (p, SIGKILL);
|
|
FAIL_EXIT1 ("read tid failed: %m");
|
|
}
|
|
|
|
close (pipefd[0]);
|
|
|
|
int ret = 0;
|
|
|
|
pid_t own_pid = getpid ();
|
|
pid_t own_tid = syscall (__NR_gettid);
|
|
|
|
/* Some sanity checks for clone syscall: returned ppid should be current
|
|
pid and both returned tid/pid should be different from current one. */
|
|
if ((ppid != own_pid) || (pid == own_pid) || (tid == own_tid))
|
|
FAIL_RET ("ppid=%i pid=%i tid=%i | own_pid=%i own_tid=%i",
|
|
(int)ppid, (int)pid, (int)tid, (int)own_pid, (int)own_tid);
|
|
|
|
int e;
|
|
if (waitpid (p, &e, __WCLONE) != p)
|
|
{
|
|
kill (p, SIGKILL);
|
|
FAIL_EXIT1 ("waitpid failed");
|
|
}
|
|
if (!WIFEXITED (e))
|
|
{
|
|
if (WIFSIGNALED (e))
|
|
printf ("died from signal %s\n", strsignal (WTERMSIG (e)));
|
|
else
|
|
puts ("did not terminate correctly");
|
|
exit (EXIT_FAILURE);
|
|
}
|
|
if (WEXITSTATUS (e) != 0)
|
|
FAIL_EXIT1 ("exit code %d", WEXITSTATUS (e));
|
|
|
|
return ret;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|