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glibc/nptl/tst-cancel7.c
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/* Copyright (C) 2002-2016 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> | |
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); | |
if (pthread_cancel (th) != 0) | |
{ | |
puts ("pthread_cancel failed"); | |
return 1; | |
} | |
void *r; | |
if (pthread_join (th, &r) != 0) | |
{ | |
puts ("pthread_join failed"); | |
return 1; | |
} | |
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 }, | |
#define CMDLINE_PROCESS \ | |
case OPT_COMMAND: \ | |
command = optarg; \ | |
break; \ | |
case OPT_PIDFILE: \ | |
pidfile = optarg; \ | |
break; | |
#define CLEANUP_HANDLER do_cleanup () | |
#define PREPARE(argc, argv) do_prepare (argc, argv) | |
#define TEST_FUNCTION do_test () | |
#define TIMEOUT 5 | |
#include "../test-skeleton.c" |