strace/tests/getrandom.c
Dmitry V. Levin a380ba0f9b tests/getrandom.c: use libtests
* tests/getrandom.c: Use SKIP_MAIN_UNDEFINED.
(main): Use perror_msg_and_skip.
2016-01-06 11:36:54 +00:00

65 lines
2.3 KiB
C

/*
* Copyright (c) 2015-2016 Dmitry V. Levin <ldv@altlinux.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "tests.h"
#include <sys/syscall.h>
#ifdef __NR_getrandom
# include <stdio.h>
# include <unistd.h>
int
main(void)
{
unsigned char buf[4];
if (syscall(__NR_getrandom, buf, sizeof(buf) - 1, 0) != sizeof(buf) - 1)
perror_msg_and_skip("getrandom");
printf("getrandom(\"\\x%02x\\x%02x\\x%02x\", 3, 0) = 3\n",
(int) buf[0], (int) buf[1], (int) buf[2]);
if (syscall(__NR_getrandom, buf, sizeof(buf), 1) != sizeof(buf))
perror_msg_and_skip("getrandom");
printf("getrandom(\"\\x%02x\\x%02x\\x%02x\"..., 4, GRND_NONBLOCK) = 4\n",
(int) buf[0], (int) buf[1], (int) buf[2]);
if (syscall(__NR_getrandom, buf, sizeof(buf), 0x3003) != -1)
perror_msg_and_skip("getrandom");
printf("getrandom(%p, 4, GRND_NONBLOCK|GRND_RANDOM|0x3000) = "
"-1 EINVAL (%m)\n", buf);
puts("+++ exited with 0 +++");
return 0;
}
#else
SKIP_MAIN_UNDEFINED("__NR_getrandom")
#endif