/*
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* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "tests.h"
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#include <assert.h>
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#include <errno.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <asm/unistd.h>
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#ifndef __NR_send
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# define __NR_send -1
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#endif
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#define SC_send 9
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#ifndef __NR_recv
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# define __NR_recv -1
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#endif
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#define SC_recv 10
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static int
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sys_send(int sockfd, const void *buf, size_t len, int flags)
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{
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int rc = socketcall(__NR_send, SC_send,
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sockfd, (long) buf, len, flags, 0);
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if (rc < 0 && ENOSYS == errno)
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perror_msg_and_skip("send");
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return rc;
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}
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static int
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sys_recv(int sockfd, const void *buf, size_t len, int flags)
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{
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int rc = socketcall(__NR_recv, SC_recv,
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sockfd, (long) buf, len, flags, 0);
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if (rc < 0 && ENOSYS == errno)
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perror_msg_and_skip("recv");
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return rc;
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}
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static void
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transpose(char *str, const size_t len)
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{
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size_t i;
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for (i = 0; i < len / 2; ++i) {
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char c = str[i];
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str[i] = str[len - 1 - i];
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str[len - 1 - i] = c;
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}
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}
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int
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main(int ac, char **av)
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{
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assert(ac == 2);
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const size_t len = strlen(av[1]);
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assert(len);
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char *const buf0 = tail_alloc(len);
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char *const buf1 = tail_alloc(len);
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memcpy(buf0, av[1], len);
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(void) close(0);
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(void) close(1);
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int sv[2];
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if (socketpair(AF_UNIX, SOCK_STREAM, 0, sv))
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perror_msg_and_skip("socketpair");
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assert(sys_send(0, buf0, len, MSG_DONTROUTE) == (int) len);
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assert(sys_recv(1, buf1, len, MSG_WAITALL) == (int) len);
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transpose(buf1, len);
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assert(sys_send(1, buf1, len, MSG_DONTROUTE) == (int) len);
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if (close(1))
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perror_msg_and_fail("close(1)");
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assert(sys_recv(0, buf0, len, MSG_WAITALL) == (int) len);
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if (close(0))
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perror_msg_and_fail("close(0)");
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assert(sys_recv(0, NULL, len, MSG_DONTWAIT) == -1);
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return 0;
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}
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