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/add.c,v 1.15 2006/10/04 18:20:25 marcel Exp $ 27 * $DragonFly: src/sbin/gpt/add.c,v 1.6 2008/07/17 01:15:59 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 uuid_t type; 43 static off_t block, size; 44 static unsigned int entry = NOENTRY; 45 46 static void 47 usage_add(void) 48 { 49 50 fprintf(stderr, 51 "usage: %s [-b lba] [-i index] [-s count] [-t uuid] device ...\n", 52 getprogname()); 53 exit(1); 54 } 55 56 static void 57 add(int fd) 58 { 59 map_t *gpt, *tpg; 60 map_t *tbl, *lbt; 61 map_t *map; 62 struct gpt_hdr *hdr; 63 struct gpt_ent *ent; 64 unsigned int i; 65 66 gpt = map_find(MAP_TYPE_PRI_GPT_HDR); 67 if (gpt == NULL) { 68 warnx("%s: error: no primary GPT header; run create or recover", 69 device_name); 70 return; 71 } 72 73 tpg = map_find(MAP_TYPE_SEC_GPT_HDR); 74 if (tpg == NULL) { 75 warnx("%s: error: no secondary GPT header; run recover", 76 device_name); 77 return; 78 } 79 80 tbl = map_find(MAP_TYPE_PRI_GPT_TBL); 81 lbt = map_find(MAP_TYPE_SEC_GPT_TBL); 82 if (tbl == NULL || lbt == NULL) { 83 warnx("%s: error: run recover -- trust me", device_name); 84 return; 85 } 86 87 hdr = gpt->map_data; 88 if (entry != NOENTRY && entry > le32toh(hdr->hdr_entries)) { 89 warnx("%s: error: index %u out of range (%u max)", device_name, 90 entry, le32toh(hdr->hdr_entries)); 91 return; 92 } 93 94 if (entry != NOENTRY) { 95 i = entry; 96 ent = (void*)((char*)tbl->map_data + i * 97 le32toh(hdr->hdr_entsz)); 98 if (!uuid_is_nil(&ent->ent_type, NULL)) { 99 warnx("%s: error: entry at index %u is not free", 100 device_name, entry); 101 return; 102 } 103 } else { 104 /* Find empty slot in GPT table. */ 105 ent = NULL; 106 for (i = 0; i < le32toh(hdr->hdr_entries); i++) { 107 ent = (void*)((char*)tbl->map_data + i * 108 le32toh(hdr->hdr_entsz)); 109 if (uuid_is_nil(&ent->ent_type, NULL)) 110 break; 111 } 112 if (i == le32toh(hdr->hdr_entries)) { 113 warnx("%s: error: no available table entries", 114 device_name); 115 return; 116 } 117 } 118 119 map = map_alloc(block, size); 120 if (map == NULL) { 121 warnx("%s: error: no space available on device", device_name); 122 return; 123 } 124 125 le_uuid_enc(&ent->ent_type, &type); 126 ent->ent_lba_start = htole64(map->map_start); 127 ent->ent_lba_end = htole64(map->map_start + map->map_size - 1LL); 128 129 hdr->hdr_crc_table = htole32(crc32(tbl->map_data, 130 le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); 131 hdr->hdr_crc_self = 0; 132 hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); 133 134 gpt_write(fd, gpt); 135 gpt_write(fd, tbl); 136 137 hdr = tpg->map_data; 138 ent = (void*)((char*)lbt->map_data + i * le32toh(hdr->hdr_entsz)); 139 140 le_uuid_enc(&ent->ent_type, &type); 141 ent->ent_lba_start = htole64(map->map_start); 142 ent->ent_lba_end = htole64(map->map_start + map->map_size - 1LL); 143 144 hdr->hdr_crc_table = htole32(crc32(lbt->map_data, 145 le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); 146 hdr->hdr_crc_self = 0; 147 hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); 148 149 gpt_write(fd, lbt); 150 gpt_write(fd, tpg); 151 152 printf("%ss%u added\n", device_name, i); 153 } 154 155 void 156 add_defaults(int fd) 157 { 158 entry = 0; 159 size = 524288; 160 if (parse_uuid("EFI System", &type) != 0) { 161 fprintf(stderr, "Unable to lookup uuid 'EFI System'\n"); 162 exit(1); 163 } 164 add(fd); 165 166 entry = 1; 167 size = 0; 168 if (parse_uuid("DragonFly Label64", &type) != 0) { 169 fprintf(stderr, "Unable to lookup uuid 'DragonFly Label64'\n"); 170 exit(1); 171 } 172 add(fd); 173 } 174 175 int 176 cmd_add(int argc, char *argv[]) 177 { 178 char *p; 179 int ch, fd; 180 181 /* Get the migrate options */ 182 while ((ch = getopt(argc, argv, "b:i:s:t:")) != -1) { 183 switch(ch) { 184 case 'b': 185 if (block > 0) 186 usage_add(); 187 block = strtoll(optarg, &p, 10); 188 if (*p != 0 || block < 1) 189 usage_add(); 190 break; 191 case 'i': 192 if (entry != NOENTRY) 193 usage_add(); 194 entry = strtoul(optarg, &p, 10); 195 if (*p != 0 || entry == NOENTRY) 196 usage_add(); 197 break; 198 case 's': 199 if (size > 0) 200 usage_add(); 201 size = strtoll(optarg, &p, 10); 202 if (*p != 0 || size < 1) 203 usage_add(); 204 break; 205 case 't': 206 if (!uuid_is_nil(&type, NULL)) 207 usage_add(); 208 if (parse_uuid(optarg, &type) != 0) 209 usage_add(); 210 break; 211 default: 212 usage_add(); 213 } 214 } 215 216 if (argc == optind) 217 usage_add(); 218 219 /* Create DragonFly 64 bit label partitions by default. */ 220 if (uuid_is_nil(&type, NULL)) { 221 uint32_t status; 222 223 uuid_name_lookup(&type, "DragonFly Label64", &status); 224 if (status != uuid_s_ok) 225 err(1, "unable to find uuid for 'DragonFly Label64'"); 226 } 227 228 while (optind < argc) { 229 fd = gpt_open(argv[optind++]); 230 if (fd == -1) { 231 warn("unable to open device '%s'", device_name); 232 continue; 233 } 234 235 add(fd); 236 237 gpt_close(fd); 238 } 239 240 return (0); 241 } 242