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/* Copyright (C) 2002-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
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
<http://www.gnu.org/licenses/>. */
#include <errno.h>
#include <fcntl.h>
#include <pthread.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#include <support/xthread.h>
const char *command;
const char *pidfile;
char pidfilename[] = "/tmp/tst-cancel7-XXXXXX";
static void *
tf (void *arg)
{
const char *args = " --direct --pidfile ";
char *cmd = alloca (strlen (command) + strlen (args)
+ strlen (pidfilename) + 1);
strcpy (stpcpy (stpcpy (cmd, command), args), pidfilename);
system (cmd);
/* This call should never return. */
return NULL;
}
static void
sl (void)
{
FILE *f = fopen (pidfile, "w");
if (f == NULL)
exit (1);
fprintf (f, "%lld\n", (long long) getpid ());
fflush (f);
struct flock fl =
{
.l_type = F_WRLCK,
.l_start = 0,
.l_whence = SEEK_SET,
.l_len = 1
};
if (fcntl (fileno (f), F_SETLK, &fl) != 0)
exit (1);
sigset_t ss;
sigfillset (&ss);
sigsuspend (&ss);
exit (0);
}
static void
do_prepare (int argc, char *argv[])
{
if (command == NULL)
command = argv[0];
if (pidfile)
sl ();
int fd = mkstemp (pidfilename);
if (fd == -1)
{
puts ("mkstemp failed");
exit (1);
}
write (fd, " ", 1);
close (fd);
}
static int
do_test (void)
{
pthread_t th;
if (pthread_create (&th, NULL, tf, NULL) != 0)
{
puts ("pthread_create failed");
return 1;
}
do
sleep (1);
while (access (pidfilename, R_OK) != 0);
xpthread_cancel (th);
void *r = xpthread_join (th);
sleep (1);
FILE *f = fopen (pidfilename, "r+");
if (f == NULL)
{
puts ("no pidfile");
return 1;
}
long long ll;
if (fscanf (f, "%lld\n", &ll) != 1)
{
puts ("could not read pid");
unlink (pidfilename);
return 1;
}
struct flock fl =
{
.l_type = F_WRLCK,
.l_start = 0,
.l_whence = SEEK_SET,
.l_len = 1
};
if (fcntl (fileno (f), F_GETLK, &fl) != 0)
{
puts ("F_GETLK failed");
unlink (pidfilename);
return 1;
}
if (fl.l_type != F_UNLCK)
{
printf ("child %lld still running\n", (long long) fl.l_pid);
if (fl.l_pid == ll)
kill (fl.l_pid, SIGKILL);
unlink (pidfilename);
return 1;
}
fclose (f);
unlink (pidfilename);
return r != PTHREAD_CANCELED;
}
static void
do_cleanup (void)
{
FILE *f = fopen (pidfilename, "r+");
long long ll;
if (f != NULL && fscanf (f, "%lld\n", &ll) == 1)
{
struct flock fl =
{
.l_type = F_WRLCK,
.l_start = 0,
.l_whence = SEEK_SET,
.l_len = 1
};
if (fcntl (fileno (f), F_GETLK, &fl) == 0 && fl.l_type != F_UNLCK
&& fl.l_pid == ll)
kill (fl.l_pid, SIGKILL);
fclose (f);
}
unlink (pidfilename);
}
#define OPT_COMMAND 10000
#define OPT_PIDFILE 10001
#define CMDLINE_OPTIONS \
{ "command", required_argument, NULL, OPT_COMMAND }, \
{ "pidfile", required_argument, NULL, OPT_PIDFILE },
static void
cmdline_process (int c)
{
switch (c)
{
case OPT_COMMAND:
command = optarg;
break;
case OPT_PIDFILE:
pidfile = optarg;
break;
}
}
#define CMDLINE_PROCESS cmdline_process
#define CLEANUP_HANDLER do_cleanup
#define PREPARE do_prepare
#include <support/test-driver.c>
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