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/* Wait for process state tests.
Copyright (C) 2020-2022 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 <stdio.h>
#include <sys/wait.h>
#include <unistd.h>
#include <errno.h>
#include <support/test-driver.h>
#include <support/process_state.h>
#include <support/check.h>
#include <support/xsignal.h>
#include <support/xunistd.h>
#ifndef WEXITED
# define WEXITED 0
#endif
static void
sigusr1_handler (int signo)
{
}
static void
test_child (void)
{
xsignal (SIGUSR1, sigusr1_handler);
raise (SIGSTOP);
TEST_COMPARE (pause (), -1);
TEST_COMPARE (errno, EINTR);
while (1)
asm ("");
}
static int
do_test (void)
{
pid_t pid = xfork ();
if (pid == 0)
{
test_child ();
_exit (127);
}
/* Adding process_state_tracing_stop ('t') allows the test to work under
trace programs such as ptrace. */
enum support_process_state stop_state = support_process_state_stopped
| support_process_state_tracing_stop;
if (test_verbose)
printf ("info: waiting pid %d, state_stopped/state_tracing_stop\n",
(int) pid);
support_process_state_wait (pid, stop_state);
if (kill (pid, SIGCONT) != 0)
FAIL_RET ("kill (%d, SIGCONT): %m\n", pid);
if (test_verbose)
printf ("info: waiting pid %d, state_sleeping\n", (int) pid);
support_process_state_wait (pid, support_process_state_sleeping);
if (kill (pid, SIGUSR1) != 0)
FAIL_RET ("kill (%d, SIGUSR1): %m\n", pid);
if (test_verbose)
printf ("info: waiting pid %d, state_running\n", (int) pid);
support_process_state_wait (pid, support_process_state_running);
if (kill (pid, SIGKILL) != 0)
FAIL_RET ("kill (%d, SIGKILL): %m\n", pid);
if (test_verbose)
printf ("info: waiting pid %d, state_zombie\n", (int) pid);
support_process_state_wait (pid, support_process_state_zombie);
siginfo_t info;
int r = waitid (P_PID, pid, &info, WEXITED);
TEST_COMPARE (r, 0);
TEST_COMPARE (info.si_signo, SIGCHLD);
TEST_COMPARE (info.si_code, CLD_KILLED);
TEST_COMPARE (info.si_status, SIGKILL);
TEST_COMPARE (info.si_pid, pid);
return 0;
}
#include <support/test-driver.c>
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