| /* |
| nonrandomopentest.c -- test nonrandomopen.so |
| Copyright (C) 2017 Dieter Baron and Thomas Klausner |
| |
| This file is part of ckmame, a program to check rom sets for MAME. |
| The authors can be contacted at <ckmame@nih.at> |
| |
| 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 AUTHORS ``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 AUTHORS 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. |
| */ |
| |
| /* to get the same defines that other tools get, in particular |
| * overrides for file offset sizes from config.h */ |
| #include "compat.h" |
| |
| #include <errno.h> |
| #include <fcntl.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| int |
| main(int argc, const char *argv[]) |
| { |
| int fd, i; |
| char buf[10]; |
| |
| fd = open("/dev/urandom", O_RDONLY); |
| if (fd < 0) { |
| fprintf(stderr, "can't open /dev/urandom: %s\n", strerror(errno)); |
| exit(1); |
| } |
| if (read(fd, buf, sizeof(buf)) < sizeof(buf)) { |
| fprintf(stderr, "can't read %d bytes: %s\n", (int)sizeof(buf), strerror(errno)); |
| exit(1); |
| } |
| close(fd); |
| for (i=0; i<sizeof(buf); i++) { |
| if (buf[i] != 0) { |
| fprintf(stderr, "non-zero byte found\n"); |
| exit(1); |
| } |
| } |
| exit(0); |
| } |