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