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/* Copyright (C) 2002-2018 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2002.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <fcntl.h>
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#include <pthread.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <getopt.h>
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#include <support/xthread.h>
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const char *command;
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const char *pidfile;
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char pidfilename[] = "/tmp/tst-cancel7-XXXXXX";
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static void *
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tf (void *arg)
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{
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const char *args = " --direct --pidfile ";
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char *cmd = alloca (strlen (command) + strlen (args)
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+ strlen (pidfilename) + 1);
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strcpy (stpcpy (stpcpy (cmd, command), args), pidfilename);
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system (cmd);
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/* This call should never return. */
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return NULL;
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}
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static void
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sl (void)
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{
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FILE *f = fopen (pidfile, "w");
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if (f == NULL)
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exit (1);
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fprintf (f, "%lld\n", (long long) getpid ());
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fflush (f);
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struct flock fl =
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{
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.l_type = F_WRLCK,
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.l_start = 0,
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.l_whence = SEEK_SET,
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.l_len = 1
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};
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if (fcntl (fileno (f), F_SETLK, &fl) != 0)
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exit (1);
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sigset_t ss;
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sigfillset (&ss);
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sigsuspend (&ss);
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exit (0);
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}
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static void
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do_prepare (int argc, char *argv[])
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{
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if (command == NULL)
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command = argv[0];
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if (pidfile)
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sl ();
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int fd = mkstemp (pidfilename);
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if (fd == -1)
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{
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puts ("mkstemp failed");
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exit (1);
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}
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write (fd, " ", 1);
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close (fd);
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}
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static int
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do_test (void)
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{
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pthread_t th;
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if (pthread_create (&th, NULL, tf, NULL) != 0)
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{
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puts ("pthread_create failed");
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return 1;
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}
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do
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sleep (1);
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while (access (pidfilename, R_OK) != 0);
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xpthread_cancel (th);
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void *r = xpthread_join (th);
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sleep (1);
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FILE *f = fopen (pidfilename, "r+");
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if (f == NULL)
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{
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puts ("no pidfile");
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return 1;
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}
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long long ll;
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if (fscanf (f, "%lld\n", &ll) != 1)
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{
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puts ("could not read pid");
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unlink (pidfilename);
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return 1;
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}
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struct flock fl =
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{
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.l_type = F_WRLCK,
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.l_start = 0,
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.l_whence = SEEK_SET,
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.l_len = 1
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};
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if (fcntl (fileno (f), F_GETLK, &fl) != 0)
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{
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puts ("F_GETLK failed");
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unlink (pidfilename);
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return 1;
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}
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if (fl.l_type != F_UNLCK)
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{
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printf ("child %lld still running\n", (long long) fl.l_pid);
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if (fl.l_pid == ll)
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kill (fl.l_pid, SIGKILL);
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unlink (pidfilename);
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return 1;
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}
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fclose (f);
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unlink (pidfilename);
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return r != PTHREAD_CANCELED;
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}
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static void
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do_cleanup (void)
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{
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FILE *f = fopen (pidfilename, "r+");
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long long ll;
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if (f != NULL && fscanf (f, "%lld\n", &ll) == 1)
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{
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struct flock fl =
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{
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.l_type = F_WRLCK,
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.l_start = 0,
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.l_whence = SEEK_SET,
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.l_len = 1
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};
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if (fcntl (fileno (f), F_GETLK, &fl) == 0 && fl.l_type != F_UNLCK
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&& fl.l_pid == ll)
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kill (fl.l_pid, SIGKILL);
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fclose (f);
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}
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unlink (pidfilename);
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}
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#define OPT_COMMAND 10000
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#define OPT_PIDFILE 10001
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#define CMDLINE_OPTIONS \
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{ "command", required_argument, NULL, OPT_COMMAND }, \
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{ "pidfile", required_argument, NULL, OPT_PIDFILE },
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static void
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cmdline_process (int c)
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{
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switch (c)
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{
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case OPT_COMMAND:
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command = optarg;
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break;
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case OPT_PIDFILE:
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pidfile = optarg;
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break;
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}
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}
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#define CMDLINE_PROCESS cmdline_process
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#define CLEANUP_HANDLER do_cleanup
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#define PREPARE do_prepare
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#define TIMEOUT 5
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#include <support/test-driver.c>
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