1 /*- 2 * Copyright (c) 2002 Marcel Moolenaar 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 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD: src/sbin/gpt/destroy.c,v 1.6 2005/08/31 01:47:19 marcel Exp $ 27 * $DragonFly: src/sbin/gpt/destroy.c,v 1.1 2007/06/16 22:29:27 dillon Exp $ 28 */ 29 30 #include <sys/types.h> 31 32 #include <err.h> 33 #include <stddef.h> 34 #include <stdio.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <unistd.h> 38 39 #include "map.h" 40 #include "gpt.h" 41 42 static int recoverable; 43 44 static void 45 usage_destroy(void) 46 { 47 48 fprintf(stderr, 49 "usage: %s [-r] device ...\n", getprogname()); 50 exit(1); 51 } 52 53 static void 54 destroy(int fd) 55 { 56 map_t *pri_hdr, *sec_hdr; 57 58 pri_hdr = map_find(MAP_TYPE_PRI_GPT_HDR); 59 sec_hdr = map_find(MAP_TYPE_SEC_GPT_HDR); 60 61 if (pri_hdr == NULL && sec_hdr == NULL) { 62 warnx("%s: error: device doesn't contain a GPT", device_name); 63 return; 64 } 65 66 if (recoverable && sec_hdr == NULL) { 67 warnx("%s: error: recoverability not possible", device_name); 68 return; 69 } 70 71 if (pri_hdr != NULL) { 72 bzero(pri_hdr->map_data, secsz); 73 gpt_write(fd, pri_hdr); 74 } 75 76 if (!recoverable && sec_hdr != NULL) { 77 bzero(sec_hdr->map_data, secsz); 78 gpt_write(fd, sec_hdr); 79 } 80 } 81 82 int 83 cmd_destroy(int argc, char *argv[]) 84 { 85 int ch, fd; 86 87 while ((ch = getopt(argc, argv, "r")) != -1) { 88 switch(ch) { 89 case 'r': 90 recoverable = 1; 91 break; 92 default: 93 usage_destroy(); 94 } 95 } 96 97 if (argc == optind) 98 usage_destroy(); 99 100 while (optind < argc) { 101 fd = gpt_open(argv[optind++]); 102 if (fd == -1) { 103 warn("unable to open device '%s'", device_name); 104 continue; 105 } 106 107 destroy(fd); 108 109 gpt_close(fd); 110 } 111 112 return (0); 113 } 114