1 /*
2 * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
3 * Copyright (c) 2017 The strace developers.
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 * 3. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29 #include "tests.h"
30 #include <stdio.h>
31 #include <sys/socket.h>
32 #include "netlink.h"
33
34 int
main(void)35 main(void)
36 {
37 skip_if_unavailable("/proc/self/fd/");
38
39 long rc;
40 int fd = create_nl_socket(NETLINK_KOBJECT_UEVENT);
41
42 /* test using data that looks like a zero-length C string */
43 char *const buf = tail_alloc(DEFAULT_STRLEN + 1);
44 buf[0] = '=';
45 fill_memory_ex(buf + 1, DEFAULT_STRLEN, 0, DEFAULT_STRLEN);
46
47 rc = sendto(fd, buf + 1, DEFAULT_STRLEN, MSG_DONTWAIT, NULL, 0);
48 printf("sendto(%d, ", fd);
49 print_quoted_memory(buf + 1, DEFAULT_STRLEN);
50 printf(", %u, MSG_DONTWAIT, NULL, 0) = %s\n",
51 DEFAULT_STRLEN, sprintrc(rc));
52
53 rc = sendto(fd, buf, DEFAULT_STRLEN + 1, MSG_DONTWAIT, NULL, 0);
54 printf("sendto(%d, ", fd);
55 print_quoted_memory(buf, DEFAULT_STRLEN);
56 printf("..., %u, MSG_DONTWAIT, NULL, 0) = %s\n",
57 DEFAULT_STRLEN + 1, sprintrc(rc));
58
59 puts("+++ exited with 0 +++");
60 return 0;
61 }
62