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/add.c,v 1.14 2006/06/22 22:05:28 marcel Exp $"); 30 #endif 31 #ifdef __RCSID 32 __RCSID("$NetBSD: add.c,v 1.4 2007/02/16 17:13:02 riz 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 #include <inttypes.h> 44 45 #include "map.h" 46 #include "gpt.h" 47 48 static uuid_t type; 49 static off_t block, size; 50 static unsigned int entry; 51 52 static void 53 usage_add(void) 54 { 55 56 fprintf(stderr, 57 "usage: %s [-b lba] [-i index] [-s lba] [-t uuid] device ...\n", 58 getprogname()); 59 exit(1); 60 } 61 62 static void 63 add(int fd) 64 { 65 map_t *gpt, *tpg; 66 map_t *tbl, *lbt; 67 map_t *map; 68 struct gpt_hdr *hdr; 69 struct gpt_ent *ent; 70 unsigned int i; 71 72 gpt = map_find(MAP_TYPE_PRI_GPT_HDR); 73 ent = NULL; 74 if (gpt == NULL) { 75 warnx("%s: error: no primary GPT header; run create or recover", 76 device_name); 77 return; 78 } 79 80 tpg = map_find(MAP_TYPE_SEC_GPT_HDR); 81 if (tpg == NULL) { 82 warnx("%s: error: no secondary GPT header; run recover", 83 device_name); 84 return; 85 } 86 87 tbl = map_find(MAP_TYPE_PRI_GPT_TBL); 88 lbt = map_find(MAP_TYPE_SEC_GPT_TBL); 89 if (tbl == NULL || lbt == NULL) { 90 warnx("%s: error: run recover -- trust me", device_name); 91 return; 92 } 93 94 hdr = gpt->map_data; 95 if (entry > le32toh(hdr->hdr_entries)) { 96 warnx("%s: error: index %u out of range (%u max)", device_name, 97 entry, le32toh(hdr->hdr_entries)); 98 return; 99 } 100 101 if (entry > 0) { 102 i = entry - 1; 103 ent = (void*)((char*)tbl->map_data + i * 104 le32toh(hdr->hdr_entsz)); 105 if (!uuid_is_nil((uuid_t *)&ent->ent_type, NULL)) { 106 warnx("%s: error: entry at index %u is not free", 107 device_name, entry); 108 return; 109 } 110 } else { 111 /* Find empty slot in GPT table. */ 112 for (i = 0; i < le32toh(hdr->hdr_entries); i++) { 113 ent = (void*)((char*)tbl->map_data + i * 114 le32toh(hdr->hdr_entsz)); 115 if (uuid_is_nil((uuid_t *)&ent->ent_type, NULL)) 116 break; 117 } 118 if (i == le32toh(hdr->hdr_entries)) { 119 warnx("%s: error: no available table entries", 120 device_name); 121 return; 122 } 123 } 124 125 map = map_alloc(block, size); 126 if (map == NULL) { 127 warnx("%s: error: no space available on device", device_name); 128 return; 129 } 130 131 le_uuid_enc((uuid_t *)&ent->ent_type, &type); 132 ent->ent_lba_start = htole64(map->map_start); 133 ent->ent_lba_end = htole64(map->map_start + map->map_size - 1LL); 134 135 hdr->hdr_crc_table = htole32(crc32(tbl->map_data, 136 le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); 137 hdr->hdr_crc_self = 0; 138 hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); 139 140 gpt_write(fd, gpt); 141 gpt_write(fd, tbl); 142 143 hdr = tpg->map_data; 144 ent = (void*)((char*)lbt->map_data + i * le32toh(hdr->hdr_entsz)); 145 146 le_uuid_enc(&ent->ent_type, &type); 147 ent->ent_lba_start = htole64(map->map_start); 148 ent->ent_lba_end = htole64(map->map_start + map->map_size - 1LL); 149 150 hdr->hdr_crc_table = htole32(crc32(lbt->map_data, 151 le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); 152 hdr->hdr_crc_self = 0; 153 hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); 154 155 gpt_write(fd, lbt); 156 gpt_write(fd, tpg); 157 158 #ifdef __FreeBSD__ 159 printf("%sp%u added\n", device_name, i + 1); 160 #endif 161 #ifdef __NetBSD__ 162 printf("Partition added, use:\n"); 163 printf("\tdkctl %s addwedge dk<N> %" PRIu64 " %" PRIu64 " <type>\n", 164 device_name, map->map_start, map->map_size); 165 printf("to create a wedge for it\n"); 166 #endif 167 } 168 169 int 170 cmd_add(int argc, char *argv[]) 171 { 172 char *p; 173 int ch, fd; 174 175 /* Get the migrate options */ 176 while ((ch = getopt(argc, argv, "b:i:s:t:")) != -1) { 177 switch(ch) { 178 case 'b': 179 if (block > 0) 180 usage_add(); 181 block = strtoll(optarg, &p, 10); 182 if (*p != 0 || block < 1) 183 usage_add(); 184 break; 185 case 'i': 186 if (entry > 0) 187 usage_add(); 188 entry = strtoul(optarg, &p, 10); 189 if (*p != 0 || entry < 1) 190 usage_add(); 191 break; 192 case 's': 193 if (size > 0) 194 usage_add(); 195 size = strtoll(optarg, &p, 10); 196 if (*p != 0 || size < 1) 197 usage_add(); 198 break; 199 case 't': 200 if (!uuid_is_nil(&type, NULL)) 201 usage_add(); 202 if (parse_uuid(optarg, &type) != 0) 203 usage_add(); 204 break; 205 default: 206 usage_add(); 207 } 208 } 209 210 if (argc == optind) 211 usage_add(); 212 213 /* Create UFS partitions by default. */ 214 if (uuid_is_nil(&type, NULL)) { 215 uuid_t ufs = GPT_ENT_TYPE_FREEBSD_UFS; 216 type = ufs; 217 } 218 219 while (optind < argc) { 220 fd = gpt_open(argv[optind++]); 221 if (fd == -1) { 222 warn("unable to open device '%s'", device_name); 223 continue; 224 } 225 226 add(fd); 227 228 gpt_close(fd); 229 } 230 231 return (0); 232 } 233