1 /*
2  * Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  * 3. The name of the author may not be used to endorse or promote products
14  *    derived from this software without specific prior written permission.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  */
27 
28 #include "tests.h"
29 #include <asm/unistd.h>
30 
31 #ifdef __NR_getrandom
32 
33 # include <stdio.h>
34 # include <unistd.h>
35 
36 int
37 main(void)
38 {
39 	unsigned char buf[4];
40 
41 	if (syscall(__NR_getrandom, buf, sizeof(buf) - 1, 0) != sizeof(buf) - 1)
42 		perror_msg_and_skip("getrandom");
43 	printf("getrandom(\"\\x%02x\\x%02x\\x%02x\", 3, 0) = 3\n",
44 	       (int) buf[0], (int) buf[1], (int) buf[2]);
45 
46 	if (syscall(__NR_getrandom, buf, sizeof(buf), 1) != sizeof(buf))
47 		perror_msg_and_skip("getrandom");
48 	printf("getrandom(\"\\x%02x\\x%02x\\x%02x\"..., 4, GRND_NONBLOCK) = 4\n",
49 	       (int) buf[0], (int) buf[1], (int) buf[2]);
50 
51 	if (syscall(__NR_getrandom, buf, sizeof(buf), 0x3003) != -1)
52 		perror_msg_and_skip("getrandom");
53 	printf("getrandom(%p, 4, GRND_NONBLOCK|GRND_RANDOM|0x3000) = "
54 	       "-1 EINVAL (%m)\n", buf);
55 
56 	puts("+++ exited with 0 +++");
57 	return 0;
58 }
59 
60 #else
61 
62 SKIP_MAIN_UNDEFINED("__NR_getrandom")
63 
64 #endif
65