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/*
* Copyright (c) 2015-2018 Dmitry V. Levin <ldv@strace.io>
* Copyright (c) 2015-2021 The strace developers.
* All rights reserved.
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "tests.h"
#include <assert.h>
#include <errno.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include "scno.h"
#ifndef __NR_send
# define __NR_send -1
#endif
#define SC_send 9
#ifndef __NR_recv
# define __NR_recv -1
#endif
#define SC_recv 10
static int
sys_send(int sockfd, const void *buf, size_t len, int flags)
{
int rc = socketcall(__NR_send, SC_send,
sockfd, (long) buf, len, flags, 0);
if (rc < 0 && ENOSYS == errno)
perror_msg_and_skip("send");
return rc;
}
static int
sys_recv(int sockfd, const void *buf, size_t len, int flags)
{
int rc = socketcall(__NR_recv, SC_recv,
sockfd, (long) buf, len, flags, 0);
if (rc < 0 && ENOSYS == errno)
perror_msg_and_skip("recv");
return rc;
}
static void
transpose(char *str, const size_t len)
{
for (size_t i = 0; i < len / 2; ++i) {
char c = str[i];
str[i] = str[len - 1 - i];
str[len - 1 - i] = c;
}
}
int
main(int ac, char **av)
{
assert(ac == 2);
const size_t len = strlen(av[1]);
assert(len);
char *const buf0 = tail_alloc(len);
char *const buf1 = tail_alloc(len);
memcpy(buf0, av[1], len);
(void) close(0);
(void) close(1);
int sv[2];
if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv))
perror_msg_and_skip("socketpair");
assert(sys_send(0, buf0, len, MSG_DONTROUTE) == (int) len);
assert(sys_recv(1, buf1, len, MSG_WAITALL) == (int) len);
transpose(buf1, len);
assert(sys_send(1, buf1, len, MSG_DONTROUTE) == (int) len);
if (close(1))
perror_msg_and_fail("close(1)");
assert(sys_recv(0, buf0, len, MSG_WAITALL) == (int) len);
if (close(0))
perror_msg_and_fail("close(0)");
assert(sys_recv(0, NULL, len, MSG_DONTWAIT) == -1);
return 0;
}
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