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/* Check sendmmsg cancellation.
Copyright (C) 2016-2024 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, see
<https://www.gnu.org/licenses/>. */
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <unistd.h>
#include <errno.h>
#include <pthread.h>
#include "tst-cancel4-common.h"
static void *
tf_sendmmsg (void *arg)
{
if (arg == NULL)
// XXX If somebody can provide a portable test case in which sendmmsg()
// blocks we can enable this test to run in both rounds.
abort ();
struct sockaddr_un sun;
tempfd = socket (AF_UNIX, SOCK_DGRAM, 0);
if (tempfd == -1)
FAIL_EXIT1 ("socket (AF_UNIX, SOCK_DGRAM, 0): %m");
int tries = 0;
do
{
if (++tries > 10)
FAIL_EXIT1 ("too many unsuccessful bind calls");
strcpy (sun.sun_path, "/tmp/tst-cancel4-socket-7-XXXXXX");
if (mktemp (sun.sun_path) == NULL)
FAIL_EXIT1 ("cannot generate temp file name");
sun.sun_family = AF_UNIX;
}
while (bind (tempfd, (struct sockaddr *) &sun,
offsetof (struct sockaddr_un, sun_path)
+ strlen (sun.sun_path) + 1) != 0);
tempfname = strdup (sun.sun_path);
tempfd2 = socket (AF_UNIX, SOCK_DGRAM, 0);
if (tempfd2 == -1)
FAIL_EXIT1 ("socket (AF_UNIX, SOCK_DGRAM, 0): %m");
int r = pthread_barrier_wait (&b2);
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
FAIL_EXIT1 ("pthread_barrier_wait");
r = pthread_barrier_wait (&b2);
if (r != 0 && r != PTHREAD_BARRIER_SERIAL_THREAD)
FAIL_EXIT1 ("pthread_barrier_wait");
pthread_cleanup_push (cl, NULL);
char mem[1];
struct iovec iov[1];
iov[0].iov_base = mem;
iov[0].iov_len = 1;
struct mmsghdr mm;
mm.msg_hdr.msg_name = &sun;
mm.msg_hdr.msg_namelen = (offsetof (struct sockaddr_un, sun_path)
+ strlen (sun.sun_path) + 1);
mm.msg_hdr.msg_iov = iov;
mm.msg_hdr.msg_iovlen = 1;
mm.msg_hdr.msg_control = NULL;
mm.msg_hdr.msg_controllen = 0;
ssize_t ret = sendmmsg (tempfd2, &mm, 1, 0);
if (ret == -1 && errno == ENOSYS)
exit (77);
pthread_cleanup_pop (0);
FAIL_EXIT1 ("sendmmsg returned");
}
struct cancel_tests tests[] =
{
ADD_TEST (sendmmsg, 2, 1),
};
#define ntest_tf (sizeof (tests) / sizeof (tests[0]))
#include "tst-cancel4-common.c"
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