1 /*
2 * Check decoding of unshare syscall.
3 *
4 * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
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
32 #include <asm/unistd.h>
33
34 #ifdef __NR_unshare
35
36 # include <stdio.h>
37 # include <unistd.h>
38
39 int
main(void)40 main(void)
41 {
42 static const kernel_ulong_t bogus_flags =
43 (kernel_ulong_t) 0xbadc0ded0000000fULL;
44
45 static struct {
46 kernel_ulong_t val;
47 const char *str;
48 } unshare_flags[] = {
49 { ARG_STR(0) },
50 { 0xdeadca75,
51 "CLONE_THREAD|CLONE_FS|CLONE_SIGHAND|CLONE_SYSVSEM|"
52 "CLONE_NEWUTS|CLONE_NEWIPC|CLONE_NEWNET|CLONE_NEWUSER|"
53 "CLONE_NEWCGROUP|0x80a8c075" },
54 { 0x2000000, "CLONE_NEWCGROUP" },
55 { ARG_STR(0x81f8f0ff) " /* CLONE_??? */" },
56 };
57
58 long rc;
59 unsigned int i;
60
61 rc = syscall(__NR_unshare, bogus_flags);
62 printf("unshare(%#llx /* CLONE_??? */) = %s\n",
63 (unsigned long long) bogus_flags, sprintrc(rc));
64
65 for (i = 0; i < ARRAY_SIZE(unshare_flags); i++) {
66 rc = syscall(__NR_unshare, unshare_flags[i].val);
67 printf("unshare(%s) = %s\n",
68 unshare_flags[i].str, sprintrc(rc));
69 }
70
71 puts("+++ exited with 0 +++");
72
73 return 0;
74 }
75
76 #else
77
78 SKIP_MAIN_UNDEFINED("__NR_unshare");
79
80 #endif
81