1 /* $NetBSD: uuid_create.c,v 1.1 2004/09/13 21:44:54 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 Marcel Moolenaar 5 * Copyright (c) 2002 Hiten Mahesh Pandya 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 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/lib/libc/uuid/uuid_create.c,v 1.2 2003/08/08 19:18:43 marcel Exp $ 30 */ 31 32 #include <sys/cdefs.h> 33 #if defined(LIBC_SCCS) && !defined(lint) 34 __RCSID("$NetBSD: uuid_create.c,v 1.1 2004/09/13 21:44:54 thorpej Exp $"); 35 #endif 36 37 #include "namespace.h" 38 39 #include <uuid.h> 40 41 #ifdef __minix 42 #include <paths.h> 43 #include <fcntl.h> 44 /* Fake a uuidgen() syscall */ 45 int uuidgen(struct uuid *store, int count) 46 { 47 int rfd; 48 49 if((rfd = open(_PATH_RANDOM, O_RDONLY)) < 0) { 50 return -1; 51 } 52 53 while(count--) { 54 if(read(rfd, store++, sizeof(*store)) < sizeof(*store)) { 55 close(rfd); 56 return -1; 57 } 58 } 59 60 close(rfd); 61 62 return 0; 63 } 64 #endif 65 66 /* 67 * uuid_create() - create an UUID. 68 * See also: 69 * http://www.opengroup.org/onlinepubs/009629399/uuid_create.htm 70 */ 71 void 72 uuid_create(uuid_t *u, uint32_t *status) 73 { 74 uint32_t s; 75 76 if (uuidgen(u, 1) == -1) 77 s = uuid_s_no_memory; /* XXX */ 78 else 79 s = uuid_s_ok; 80 81 if (status) 82 *status = s; 83 } 84