1 /*
2  * Check decoding of getcpu syscall.
3  *
4  * Copyright (c) 2016 Eugene Syromyatnikov <evgsyr@gmail.com>
5  * Copyright (c) 2016-2017 The strace developers.
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 
33 #include <asm/unistd.h>
34 
35 #ifdef __NR_getcpu
36 
37 # include <stdio.h>
38 # include <unistd.h>
39 
40 int
41 main(void)
42 {
43 	unsigned *bogus_cpu =
44 		(unsigned *) tail_alloc(sizeof(*bogus_cpu)) + 1;
45 	unsigned *bogus_node =
46 		(unsigned *) tail_alloc(sizeof(*bogus_node)) + 1;
47 	unsigned *bogus_tcache =
48 		(unsigned *) tail_alloc(sizeof(*bogus_tcache)) + 1;
49 
50 	long res;
51 	TAIL_ALLOC_OBJECT_CONST_PTR(unsigned, cpu);
52 	TAIL_ALLOC_OBJECT_CONST_PTR(unsigned, node);
53 	long *tcache = tail_alloc(128);
54 
55 	res = syscall(__NR_getcpu, NULL, NULL, NULL);
56 	printf("getcpu(NULL, NULL, NULL) = %s\n", sprintrc(res));
57 
58 	res = syscall(__NR_getcpu, bogus_cpu, bogus_node, bogus_tcache);
59 	printf("getcpu(%p, %p, %p) = %s\n",
60 	       bogus_cpu, bogus_node, bogus_tcache, sprintrc(res));
61 
62 	res = syscall(__NR_getcpu, cpu, node, tcache);
63 	if (res != 0)
64 		perror_msg_and_skip("getcpu");
65 
66 	printf("getcpu([%u], [%u], %p) = 0\n", *cpu, *node, tcache);
67 
68 	puts("+++ exited with 0 +++");
69 
70 	return 0;
71 }
72 
73 #else
74 
75 SKIP_MAIN_UNDEFINED("__NR_getcpu");
76 
77 #endif
78