/* * Copyright (c) 2015 Dmitry V. Levin * 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. */ #ifdef HAVE_CONFIG_H # include "config.h" #endif #include #include #include int main(void) { #ifdef __NR_getrandom unsigned char buf[4]; if (syscall(__NR_getrandom, buf, sizeof(buf) - 1, 0) != sizeof(buf) - 1) return 77; 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)) return 77; 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) return 77; printf("getrandom(%p, 4, GRND_NONBLOCK|GRND_RANDOM|0x3000) = " "-1 EINVAL (Invalid argument)\n", buf); puts("+++ exited with 0 +++"); return 0; #else return 77; #endif }