1 /*
2 * Check decoding of sethostname syscall.
3 *
4 * Copyright (c) 2016 Fei Jie <feij.fnst@cn.fujitsu.com>
5 * Copyright (c) 2016 Dmitry V. Levin <ldv@altlinux.org>
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 #ifdef __NR_sethostname
35
36 # include <stdio.h>
37 # include <unistd.h>
38
39 #ifdef HAVE_LINUX_UTSNAME_H
40 # include <linux/utsname.h>
41 #endif
42
43 #ifndef __NEW_UTS_LEN
44 # define __NEW_UTS_LEN 64
45 #endif
46
47 int
main(void)48 main(void)
49 {
50 kernel_ulong_t len;
51 long rc;
52
53 len = __NEW_UTS_LEN;
54 rc = syscall(__NR_sethostname, 0, len);
55 printf("sethostname(NULL, %u) = %s\n",
56 (unsigned) len, sprintrc(rc));
57
58 if (F8ILL_KULONG_MASK) {
59 len |= F8ILL_KULONG_MASK;
60 rc = syscall(__NR_sethostname, 0, len);
61 printf("sethostname(NULL, %u) = %s\n",
62 (unsigned) len, sprintrc(rc));
63 }
64
65 len = __NEW_UTS_LEN + 1;
66 void *const p = tail_alloc(len);
67 rc = syscall(__NR_sethostname, p, len);
68 printf("sethostname(%p, %u) = %s\n",
69 p, (unsigned) len, sprintrc(rc));
70
71 puts("+++ exited with 0 +++");
72 return 0;
73 }
74
75 #else
76
77 SKIP_MAIN_UNDEFINED("__NR_sethostname")
78
79 #endif
80