1/*
2 * This file is part of vmsplice strace test.
3 *
4 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
5 * Copyright (c) 2016-2017 The strace developers.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. The name of the author may not be used to endorse or promote products
17 *    derived from this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "tests.h"
32#include <asm/unistd.h>
33
34#if defined __NR_vmsplice
35
36# include <assert.h>
37# include <stdio.h>
38# include <unistd.h>
39# include <sys/uio.h>
40
41int
42main(void)
43{
44	tprintf("%s", "");
45
46	int fds[2];
47	if (pipe(fds))
48		perror_msg_and_fail("pipe");
49	assert(0 == fds[0]);
50	assert(1 == fds[1]);
51
52	static const char w0_c[] = "012";
53	const char *w0_d = hexdump_strdup(w0_c);
54	void *w0 = tail_memdup(w0_c, LENGTH_OF(w0_c));
55
56	static const char w1_c[] = "34567";
57	const char *w1_d = hexdump_strdup(w1_c);
58	void *w1 = tail_memdup(w1_c, LENGTH_OF(w1_c));
59
60	static const char w2_c[] = "89abcde";
61	const char *w2_d = hexdump_strdup(w2_c);
62	void *w2 = tail_memdup(w2_c, LENGTH_OF(w2_c));
63
64	const struct iovec iov_[] = {
65		{
66			.iov_base = w0,
67			.iov_len = LENGTH_OF(w0_c)
68		}, {
69			.iov_base = w1,
70			.iov_len = LENGTH_OF(w1_c)
71		}, {
72			.iov_base = w2,
73			.iov_len = LENGTH_OF(w2_c)
74		}
75	};
76	const struct iovec *iov = tail_memdup(iov_, sizeof(iov_));
77	const unsigned int len =
78		LENGTH_OF(w0_c) + LENGTH_OF(w1_c) + LENGTH_OF(w2_c);
79
80	tprintf("vmsplice(1, [{iov_base=\"%s\", iov_len=%u}"
81		", {iov_base=\"%s\", iov_len=%u}"
82		", {iov_base=\"%s\", iov_len=%u}], %u, %s) = %u\n"
83		" * %u bytes in buffer 0\n"
84		" | 00000 %-49s  %-16s |\n"
85		" * %u bytes in buffer 1\n"
86		" | 00000 %-49s  %-16s |\n"
87		" * %u bytes in buffer 2\n"
88		" | 00000 %-49s  %-16s |\n",
89		w0_c, LENGTH_OF(w0_c), w1_c, LENGTH_OF(w1_c),
90		w2_c, LENGTH_OF(w2_c), (unsigned int) ARRAY_SIZE(iov_),
91		"SPLICE_F_NONBLOCK", len,
92		LENGTH_OF(w0_c), w0_d, w0_c,
93		LENGTH_OF(w1_c), w1_d, w1_c, LENGTH_OF(w2_c), w2_d, w2_c);
94
95	const long rc = syscall(__NR_vmsplice, 1, iov, ARRAY_SIZE(iov_), 2);
96	if (rc < 0)
97		perror_msg_and_skip("vmsplice");
98	assert(rc == (int) len);
99
100	tprintf("+++ exited with 0 +++\n");
101	return 0;
102}
103
104#else
105
106SKIP_MAIN_UNDEFINED("__NR_vmsplice")
107
108#endif
109