mirror of
https://sourceware.org/git/glibc.git
synced 2025-11-03 20:53:13 +03:00
149 lines
2.9 KiB
C
149 lines
2.9 KiB
C
/* Thread calls exec.
|
|
Copyright (C) 2002-2025 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 <errno.h>
|
|
#include <paths.h>
|
|
#include <pthread.h>
|
|
#include <signal.h>
|
|
#include <spawn.h>
|
|
#include <stdbool.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <sys/wait.h>
|
|
#include <support/xsignal.h>
|
|
|
|
|
|
static void *
|
|
tf (void *arg)
|
|
{
|
|
execl (_PATH_BSHELL, _PATH_BSHELL, "-c", "echo $$", NULL);
|
|
|
|
puts ("execl failed");
|
|
exit (1);
|
|
}
|
|
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
int fd[2];
|
|
if (pipe (fd) != 0)
|
|
{
|
|
puts ("pipe failed");
|
|
exit (1);
|
|
}
|
|
|
|
/* Not interested in knowing when the pipe is closed. */
|
|
xsignal (SIGPIPE, SIG_IGN);
|
|
|
|
pid_t pid = fork ();
|
|
if (pid == -1)
|
|
{
|
|
puts ("fork failed");
|
|
exit (1);
|
|
}
|
|
|
|
if (pid == 0)
|
|
{
|
|
/* Use the fd for stdout. This is kind of ugly because it
|
|
substitutes the fd of stdout but we know what we are doing
|
|
here... */
|
|
if (dup2 (fd[1], STDOUT_FILENO) != STDOUT_FILENO)
|
|
{
|
|
puts ("dup2 failed");
|
|
exit (1);
|
|
}
|
|
|
|
close (fd[0]);
|
|
|
|
pthread_t th;
|
|
if (pthread_create (&th, NULL, tf, NULL) != 0)
|
|
{
|
|
puts ("create failed");
|
|
exit (1);
|
|
}
|
|
|
|
if (pthread_join (th, NULL) == 0)
|
|
{
|
|
puts ("join succeeded!?");
|
|
exit (1);
|
|
}
|
|
|
|
puts ("join returned!?");
|
|
exit (1);
|
|
}
|
|
|
|
close (fd[1]);
|
|
|
|
char buf[200];
|
|
ssize_t n;
|
|
bool seen_pid = false;
|
|
while (TEMP_FAILURE_RETRY ((n = read (fd[0], buf, sizeof (buf)))) > 0)
|
|
{
|
|
/* We only expect to read the PID. */
|
|
char *endp;
|
|
long int rpid = strtol (buf, &endp, 10);
|
|
|
|
if (*endp != '\n')
|
|
{
|
|
printf ("didn't parse whole line: \"%s\"\n", buf);
|
|
exit (1);
|
|
}
|
|
if (endp == buf)
|
|
{
|
|
puts ("read empty line");
|
|
exit (1);
|
|
}
|
|
|
|
if (rpid != pid)
|
|
{
|
|
printf ("found \"%s\", expected PID %ld\n", buf, (long int) pid);
|
|
exit (1);
|
|
}
|
|
|
|
if (seen_pid)
|
|
{
|
|
puts ("found more than one PID line");
|
|
exit (1);
|
|
}
|
|
seen_pid = true;
|
|
}
|
|
|
|
close (fd[0]);
|
|
|
|
int status;
|
|
int err = waitpid (pid, &status, 0);
|
|
if (err != pid)
|
|
{
|
|
puts ("waitpid failed");
|
|
exit (1);
|
|
}
|
|
|
|
if (!seen_pid)
|
|
{
|
|
puts ("didn't get PID");
|
|
exit (1);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
#define TEST_FUNCTION do_test ()
|
|
#include "../test-skeleton.c"
|