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
41 int
main(void)42 main(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
106 SKIP_MAIN_UNDEFINED("__NR_vmsplice")
107
108 #endif
109