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 27 #include <sys/cdefs.h> 28 #ifdef __FBSDID 29 __FBSDID("$FreeBSD: src/sbin/gpt/destroy.c,v 1.6 2005/08/31 01:47:19 marcel Exp $"); 30 #endif 31 #ifdef __RCSID 32 __RCSID("$NetBSD: destroy.c,v 1.2 2006/10/15 22:36:29 christos Exp $"); 33 #endif 34 35 #include <sys/types.h> 36 37 #include <err.h> 38 #include <stddef.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <unistd.h> 43 44 #include "map.h" 45 #include "gpt.h" 46 47 static int recoverable; 48 49 static void 50 usage_destroy(void) 51 { 52 53 fprintf(stderr, 54 "usage: %s [-r] device ...\n", getprogname()); 55 exit(1); 56 } 57 58 static void 59 destroy(int fd) 60 { 61 map_t *pri_hdr, *sec_hdr; 62 63 pri_hdr = map_find(MAP_TYPE_PRI_GPT_HDR); 64 sec_hdr = map_find(MAP_TYPE_SEC_GPT_HDR); 65 66 if (pri_hdr == NULL && sec_hdr == NULL) { 67 warnx("%s: error: device doesn't contain a GPT", device_name); 68 return; 69 } 70 71 if (recoverable && sec_hdr == NULL) { 72 warnx("%s: error: recoverability not possible", device_name); 73 return; 74 } 75 76 if (pri_hdr != NULL) { 77 bzero(pri_hdr->map_data, secsz); 78 gpt_write(fd, pri_hdr); 79 } 80 81 if (!recoverable && sec_hdr != NULL) { 82 bzero(sec_hdr->map_data, secsz); 83 gpt_write(fd, sec_hdr); 84 } 85 } 86 87 int 88 cmd_destroy(int argc, char *argv[]) 89 { 90 int ch, fd; 91 92 while ((ch = getopt(argc, argv, "r")) != -1) { 93 switch(ch) { 94 case 'r': 95 recoverable = 1; 96 break; 97 default: 98 usage_destroy(); 99 } 100 } 101 102 if (argc == optind) 103 usage_destroy(); 104 105 while (optind < argc) { 106 fd = gpt_open(argv[optind++]); 107 if (fd == -1) { 108 warn("unable to open device '%s'", device_name); 109 continue; 110 } 111 112 destroy(fd); 113 114 gpt_close(fd); 115 } 116 117 return (0); 118 } 119