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 1.14 2013/05/26 21:26:17 wiz 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 const char addmsg[] = "add [-b lba] [-i index] [-s lba] [-t type] " 53 "device ..."; 54 55 __dead static void 56 usage_add(void) 57 { 58 59 fprintf(stderr, 60 "usage: %s %s\n", 61 getprogname(), addmsg); 62 exit(1); 63 } 64 65 static void 66 add(int fd) 67 { 68 uuid_t uuid; 69 map_t *gpt, *tpg; 70 map_t *tbl, *lbt; 71 map_t *map; 72 struct gpt_hdr *hdr; 73 struct gpt_ent *ent; 74 unsigned int i; 75 76 gpt = map_find(MAP_TYPE_PRI_GPT_HDR); 77 ent = NULL; 78 if (gpt == NULL) { 79 warnx("%s: error: no primary GPT header; run create or recover", 80 device_name); 81 return; 82 } 83 84 tpg = map_find(MAP_TYPE_SEC_GPT_HDR); 85 if (tpg == NULL) { 86 warnx("%s: error: no secondary GPT header; run recover", 87 device_name); 88 return; 89 } 90 91 tbl = map_find(MAP_TYPE_PRI_GPT_TBL); 92 lbt = map_find(MAP_TYPE_SEC_GPT_TBL); 93 if (tbl == NULL || lbt == NULL) { 94 warnx("%s: error: run recover -- trust me", device_name); 95 return; 96 } 97 98 hdr = gpt->map_data; 99 if (entry > le32toh(hdr->hdr_entries)) { 100 warnx("%s: error: index %u out of range (%u max)", device_name, 101 entry, le32toh(hdr->hdr_entries)); 102 return; 103 } 104 105 if (entry > 0) { 106 i = entry - 1; 107 ent = (void*)((char*)tbl->map_data + i * 108 le32toh(hdr->hdr_entsz)); 109 le_uuid_dec(ent->ent_type, &uuid); 110 if (!uuid_is_nil(&uuid, NULL)) { 111 warnx("%s: error: entry at index %u is not free", 112 device_name, entry); 113 return; 114 } 115 } else { 116 /* Find empty slot in GPT table. */ 117 for (i = 0; i < le32toh(hdr->hdr_entries); i++) { 118 ent = (void*)((char*)tbl->map_data + i * 119 le32toh(hdr->hdr_entsz)); 120 le_uuid_dec(ent->ent_type, &uuid); 121 if (uuid_is_nil(&uuid, NULL)) 122 break; 123 } 124 if (i == le32toh(hdr->hdr_entries)) { 125 warnx("%s: error: no available table entries", 126 device_name); 127 return; 128 } 129 } 130 131 map = map_alloc(block, size); 132 if (map == NULL) { 133 warnx("%s: error: not enough space available on device", device_name); 134 return; 135 } 136 137 le_uuid_enc(ent->ent_type, &type); 138 ent->ent_lba_start = htole64(map->map_start); 139 ent->ent_lba_end = htole64(map->map_start + map->map_size - 1LL); 140 141 hdr->hdr_crc_table = htole32(crc32(tbl->map_data, 142 le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); 143 hdr->hdr_crc_self = 0; 144 hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); 145 146 gpt_write(fd, gpt); 147 gpt_write(fd, tbl); 148 149 hdr = tpg->map_data; 150 ent = (void*)((char*)lbt->map_data + i * le32toh(hdr->hdr_entsz)); 151 152 le_uuid_enc(ent->ent_type, &type); 153 ent->ent_lba_start = htole64(map->map_start); 154 ent->ent_lba_end = htole64(map->map_start + map->map_size - 1LL); 155 156 hdr->hdr_crc_table = htole32(crc32(lbt->map_data, 157 le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); 158 hdr->hdr_crc_self = 0; 159 hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); 160 161 gpt_write(fd, lbt); 162 gpt_write(fd, tpg); 163 164 #ifdef __FreeBSD__ 165 printf("%sp%u added\n", device_name, i + 1); 166 #endif 167 #ifdef __NetBSD__ 168 printf("Partition added, use:\n"); 169 printf("\tdkctl %s addwedge <wedgename> %" PRIu64 " %" PRIu64 170 " <type>\n", device_arg, map->map_start, map->map_size); 171 printf("to create a wedge for it\n"); 172 #endif 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 > 0) 193 usage_add(); 194 entry = strtoul(optarg, &p, 10); 195 if (*p != 0 || entry < 1) 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 NetBSD FFS partitions by default. */ 220 if (uuid_is_nil(&type, NULL)) { 221 static const uuid_t nb_ffs = GPT_ENT_TYPE_NETBSD_FFS; 222 type = nb_ffs; 223 } 224 225 while (optind < argc) { 226 fd = gpt_open(argv[optind++]); 227 if (fd == -1) { 228 warn("unable to open device '%s'", device_name); 229 continue; 230 } 231 232 add(fd); 233 234 gpt_close(fd); 235 } 236 237 return (0); 238 } 239