1 /*
2  * Check decoding of setns 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_setns
35 
36 # include <stdio.h>
37 # include <unistd.h>
38 
39 int
40 main(void)
41 {
42 	static const kernel_ulong_t bogus_fd =
43 		(kernel_ulong_t) 0xfeedfacedeadc0deULL;
44 
45 	static struct {
46 		kernel_ulong_t val;
47 		const char *str;
48 	} nstypes[] = {
49 		{ (kernel_ulong_t) 0xdefaced100000000ULL, "0" },
50 		{ (kernel_ulong_t) 0xbadc0dedfeedfaceULL,
51 			"0xfeedface /* CLONE_NEW??? */" },
52 		{ (kernel_ulong_t) 0xca75f15702000000ULL, "CLONE_NEWCGROUP" },
53 	};
54 
55 	long rc;
56 	unsigned int i;
57 
58 	for (i = 0; i < ARRAY_SIZE(nstypes); i++) {
59 		rc = syscall(__NR_setns, bogus_fd, nstypes[i].val);
60 		printf("setns(%d, %s) = %s\n",
61 			(int) bogus_fd, nstypes[i].str, sprintrc(rc));
62 	}
63 
64 	puts("+++ exited with 0 +++");
65 
66 	return 0;
67 }
68 
69 #else
70 
71 SKIP_MAIN_UNDEFINED("__NR_setns");
72 
73 #endif
74