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/* Tests for waitid.
Copyright (C) 2004 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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <errno.h>
#include <error.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/wait.h>
#include <signal.h>
#define TIMEOUT 15
static void
test_child (void)
{
/* First thing, we stop ourselves. */
raise (SIGSTOP);
/* Hey, we got continued! */
while (1)
pause ();
}
#ifndef WEXITED
# define WEXITED 0
# define WCONTINUED 0
# define WSTOPPED WUNTRACED
#endif
static int
do_test (int argc, char *argv[])
{
pid_t pid = fork ();
if (pid < 0)
{
error (0, errno, "fork");
return EXIT_FAILURE;
}
else if (pid == 0)
{
test_child ();
_exit (127);
}
int status = EXIT_SUCCESS;
#define RETURN(ok) status = (ok); goto out;
/* Give the child a chance to stop. */
sleep (2);
/* Now try a wait that should not succeed. */
siginfo_t info;
info.si_signo = 0; /* A successful call sets it to SIGCHLD. */
int fail = waitid (P_PID, pid, &info, WEXITED|WCONTINUED|WNOHANG);
switch (fail)
{
default:
error (0, 0, "waitid returned bogus value %d\n", fail);
RETURN (EXIT_FAILURE);
case -1:
error (0, errno, "waitid WNOHANG on stopped");
RETURN (errno == ENOTSUP ? EXIT_SUCCESS : EXIT_FAILURE);
case 0:
if (info.si_signo == 0)
break;
if (info.si_signo == SIGCHLD)
error (0, 0, "waitid WNOHANG on stopped status %d\n", info.si_status);
else
error (0, 0, "waitid WNOHANG on stopped signal %d\n", info.si_signo);
RETURN (EXIT_FAILURE);
}
/* Next the wait that should succeed right away. */
info.si_signo = 0; /* A successful call sets it to SIGCHLD. */
info.si_pid = -1;
info.si_status = -1;
fail = waitid (P_PID, pid, &info, WSTOPPED|WNOHANG);
switch (fail)
{
default:
error (0, 0, "waitid WSTOPPED|WNOHANG returned bogus value %d\n", fail);
RETURN (EXIT_FAILURE);
case -1:
error (0, errno, "waitid WSTOPPED|WNOHANG on stopped");
RETURN (errno == ENOTSUP ? EXIT_SUCCESS : EXIT_FAILURE);
case 0:
if (info.si_signo != SIGCHLD)
{
error (0, 0, "waitid WSTOPPED|WNOHANG on stopped signal %d\n",
info.si_signo);
RETURN (EXIT_FAILURE);
}
if (info.si_code != CLD_STOPPED)
{
error (0, 0, "waitid WSTOPPED|WNOHANG on stopped code %d\n",
info.si_code);
RETURN (EXIT_FAILURE);
}
if (info.si_status != SIGSTOP)
{
error (0, 0, "waitid WSTOPPED|WNOHANG on stopped status %d\n",
info.si_status);
RETURN (EXIT_FAILURE);
}
if (info.si_pid != pid)
{
error (0, 0, "waitid WSTOPPED|WNOHANG on stopped pid %d != %d\n",
info.si_pid, pid);
RETURN (EXIT_FAILURE);
}
}
if (kill (pid, SIGCONT) != 0)
{
error (0, errno, "kill (%d, SIGCONT)", pid);
RETURN (EXIT_FAILURE);
}
/* Wait for the child to have continued. */
sleep (2);
#if WCONTINUED != 0
info.si_signo = 0; /* A successful call sets it to SIGCHLD. */
info.si_pid = -1;
info.si_status = -1;
fail = waitid (P_PID, pid, &info, WCONTINUED);
switch (fail)
{
default:
error (0, 0, "waitid WCONTINUED returned bogus value %d\n", fail);
RETURN (EXIT_FAILURE);
case -1:
error (0, errno, "waitid WCONTINUED on continued");
RETURN (errno == ENOTSUP ? EXIT_SUCCESS : EXIT_FAILURE);
case 0:
if (info.si_signo != SIGCHLD)
{
error (0, 0, "waitid WCONTINUED on continued signal %d\n",
info.si_signo);
RETURN (EXIT_FAILURE);
}
if (info.si_code != CLD_CONTINUED)
{
error (0, 0, "waitid WCONTINUED on continued code %d\n",
info.si_code);
RETURN (EXIT_FAILURE);
}
if (info.si_status != SIGCONT)
{
error (0, 0, "waitid WCONTINUED on continued status %d\n",
info.si_status);
RETURN (EXIT_FAILURE);
}
if (info.si_pid != pid)
{
error (0, 0, "waitid WCONTINUED on continued pid %d != %d\n",
info.si_pid, pid);
RETURN (EXIT_FAILURE);
}
}
#endif
/* Die, child, die! */
if (kill (pid, SIGKILL) != 0)
{
error (0, errno, "kill (%d, SIGKILL)", pid);
RETURN (EXIT_FAILURE);
}
#ifdef WNOWAIT
info.si_signo = 0; /* A successful call sets it to SIGCHLD. */
info.si_pid = -1;
info.si_status = -1;
fail = waitid (P_PID, pid, &info, WEXITED|WNOWAIT);
switch (fail)
{
default:
error (0, 0, "waitid WNOWAIT returned bogus value %d\n", fail);
RETURN (EXIT_FAILURE);
case -1:
error (0, errno, "waitid WNOWAIT on killed");
RETURN (errno == ENOTSUP ? EXIT_SUCCESS : EXIT_FAILURE);
case 0:
if (info.si_signo != SIGCHLD)
{
error (0, 0, "waitid WNOWAIT on killed signal %d\n",
info.si_signo);
RETURN (EXIT_FAILURE);
}
if (info.si_code != CLD_KILLED)
{
error (0, 0, "waitid WNOWAIT on killed code %d\n",
info.si_code);
RETURN (EXIT_FAILURE);
}
if (info.si_status != SIGKILL)
{
error (0, 0, "waitid WNOWAIT on killed status %d\n",
info.si_status);
RETURN (EXIT_FAILURE);
}
if (info.si_pid != pid)
{
error (0, 0, "waitid WNOWAIT on killed pid %d != %d\n",
info.si_pid, pid);
RETURN (EXIT_FAILURE);
}
}
#else
/* Allow enough time to be sure the child died; we didn't synchronize. */
sleep (2);
#endif
info.si_signo = 0; /* A successful call sets it to SIGCHLD. */
info.si_pid = -1;
info.si_status = -1;
fail = waitid (P_PID, pid, &info, WEXITED|WNOHANG);
switch (fail)
{
default:
error (0, 0, "waitid WNOHANG returned bogus value %d\n", fail);
RETURN (EXIT_FAILURE);
case -1:
error (0, errno, "waitid WNOHANG on killed");
RETURN (EXIT_FAILURE);
case 0:
if (info.si_signo != SIGCHLD)
{
error (0, 0, "waitid WNOHANG on killed signal %d\n",
info.si_signo);
RETURN (EXIT_FAILURE);
}
if (info.si_code != CLD_KILLED)
{
error (0, 0, "waitid WNOHANG on killed code %d\n",
info.si_code);
RETURN (EXIT_FAILURE);
}
if (info.si_status != SIGKILL)
{
error (0, 0, "waitid WNOHANG on killed status %d\n",
info.si_status);
RETURN (EXIT_FAILURE);
}
if (info.si_pid != pid)
{
error (0, 0, "waitid WNOHANG on killed pid %d != %d\n",
info.si_pid, pid);
RETURN (EXIT_FAILURE);
}
}
fail = waitid (P_PID, pid, &info, WEXITED);
if (fail == -1)
{
if (errno != ECHILD)
{
error (0, errno, "waitid WEXITED on killed");
RETURN (EXIT_FAILURE);
}
}
else
{
error (0, 0, "waitid WEXITED returned bogus value %d\n", fail);
RETURN (EXIT_FAILURE);
}
#undef RETURN
out:
kill (pid, SIGKILL); /* Make sure it's dead if we bailed early. */
return status;
}
#include "../test-skeleton.c"
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