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/*
* Copyright (c) 2010-2011 Balabit
* Copyright (c) 2010-2011 Balázs Scheidler
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
* As an additional exemption you are allowed to compile & link against the
* OpenSSL libraries as published by the OpenSSL project. See the file
* COPYING for details.
*
*/
#include <criterion/criterion.h>
#include <glib.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <fcntl.h>
#include <signal.h>
#include <pthread.h>
#include <stdio.h>
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <string.h>
gboolean thread_exit = FALSE;
gboolean thread_started;
GCond thread_startup;
GMutex thread_lock;
pthread_t thread_handle;
void
sigusr1_handler(int signo)
{
}
static void
setup_sigusr1(void)
{
struct sigaction sa;
memset(&sa, 0, sizeof(sa));
/* NOTE: this has to be a real signal handler as SIG_IGN will not interrupt the accept call below */
sa.sa_handler = sigusr1_handler;
sa.sa_flags = 0;
sigaction(SIGUSR1, &sa, NULL);
}
static void
signal_startup(void)
{
thread_handle = pthread_self();
g_mutex_lock(&thread_lock);
thread_started = TRUE;
g_cond_signal(&thread_startup);
g_mutex_unlock(&thread_lock);
}
static gboolean
create_test_thread(GThreadFunc thread_func, gpointer data)
{
GThread *t;
struct timespec nsleep;
thread_exit = FALSE;
thread_started = FALSE;
t = g_thread_new(NULL, thread_func, data);
g_mutex_lock(&thread_lock);
while (!thread_started)
g_cond_wait(&thread_startup, &thread_lock);
g_mutex_unlock(&thread_lock);
nsleep.tv_sec = 0;
nsleep.tv_nsec = 1e6;
nanosleep(&nsleep, NULL);
thread_exit = TRUE;
pthread_kill(thread_handle, SIGUSR1);
return (g_thread_join(t) != NULL);
}
int sock;
gpointer
accept_thread_func(gpointer args)
{
struct sockaddr_un peer;
gint new_sock;
gpointer result = NULL;
setup_sigusr1();
signal_startup();
while (1)
{
gint err;
socklen_t peer_size = sizeof(peer);
new_sock = accept(sock, (struct sockaddr *) &peer, &peer_size);
err = errno;
if (new_sock >= 0)
close(new_sock);
if (thread_exit)
{
fprintf(stderr, "accept woken up, errno=%s\n", g_strerror(err));
result = (gpointer) 0x1;
break;
}
}
close(sock);
return result;
}
int
test_accept_wakeup(void)
{
struct sockaddr_un s;
unlink("almafa");
sock = socket(PF_UNIX, SOCK_STREAM, 0);
s.sun_family = AF_UNIX;
strcpy(s.sun_path, "almafa");
cr_assert_not(bind(sock, (struct sockaddr *) &s, sizeof(s)), "error binding socket: %s", strerror(errno));
cr_assert_not(listen(sock, 255), "error in listen(): %s", strerror(errno));
return create_test_thread(accept_thread_func, NULL);
}
gpointer
read_thread_func(gpointer args)
{
gint *pair = (gint *) args;
gpointer result = NULL;
setup_sigusr1();
signal_startup();
while (1)
{
gint err;
gchar buf[1024];
gint count G_GNUC_UNUSED = read(pair[1], buf, sizeof(buf));
err = errno;
if (thread_exit)
{
fprintf(stderr, "read woken up, errno=%s\n", g_strerror(err));
result = (gpointer) 0x1;
break;
}
}
close(pair[0]);
close(pair[1]);
return result;
}
int
test_read_wakeup(void)
{
gint pair[2];
socketpair(PF_UNIX, SOCK_STREAM, 0, pair);
return create_test_thread(read_thread_func, pair);
}
Test(test_thread_wakeup, testcase)
{
g_mutex_init(&thread_lock);
g_cond_init(&thread_startup);
cr_assert(test_accept_wakeup());
cr_assert(test_read_wakeup());
g_mutex_clear(&thread_lock);
g_cond_clear(&thread_startup);
}
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