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 1.10 2011/01/06 17:51:28 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 const char addmsg[] = "add [-b lba] [-i index] [-s lba] [-t type] " 53 "device ..."; 54 55 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 map_t *gpt, *tpg; 69 map_t *tbl, *lbt; 70 map_t *map; 71 struct gpt_hdr *hdr; 72 struct gpt_ent *ent; 73 unsigned int i; 74 75 gpt = map_find(MAP_TYPE_PRI_GPT_HDR); 76 ent = NULL; 77 if (gpt == NULL) { 78 warnx("%s: error: no primary GPT header; run create or recover", 79 device_name); 80 return; 81 } 82 83 tpg = map_find(MAP_TYPE_SEC_GPT_HDR); 84 if (tpg == NULL) { 85 warnx("%s: error: no secondary GPT header; run recover", 86 device_name); 87 return; 88 } 89 90 tbl = map_find(MAP_TYPE_PRI_GPT_TBL); 91 lbt = map_find(MAP_TYPE_SEC_GPT_TBL); 92 if (tbl == NULL || lbt == NULL) { 93 warnx("%s: error: run recover -- trust me", device_name); 94 return; 95 } 96 97 hdr = gpt->map_data; 98 if (entry > le32toh(hdr->hdr_entries)) { 99 warnx("%s: error: index %u out of range (%u max)", device_name, 100 entry, le32toh(hdr->hdr_entries)); 101 return; 102 } 103 104 if (entry > 0) { 105 i = entry - 1; 106 ent = (void*)((char*)tbl->map_data + i * 107 le32toh(hdr->hdr_entsz)); 108 if (!uuid_is_nil((uuid_t *)&ent->ent_type, NULL)) { 109 warnx("%s: error: entry at index %u is not free", 110 device_name, entry); 111 return; 112 } 113 } else { 114 /* Find empty slot in GPT table. */ 115 for (i = 0; i < le32toh(hdr->hdr_entries); i++) { 116 ent = (void*)((char*)tbl->map_data + i * 117 le32toh(hdr->hdr_entsz)); 118 if (uuid_is_nil((uuid_t *)&ent->ent_type, NULL)) 119 break; 120 } 121 if (i == le32toh(hdr->hdr_entries)) { 122 warnx("%s: error: no available table entries", 123 device_name); 124 return; 125 } 126 } 127 128 map = map_alloc(block, size); 129 if (map == NULL) { 130 warnx("%s: error: no space available on device", device_name); 131 return; 132 } 133 134 le_uuid_enc((uuid_t *)&ent->ent_type, &type); 135 ent->ent_lba_start = htole64(map->map_start); 136 ent->ent_lba_end = htole64(map->map_start + map->map_size - 1LL); 137 138 hdr->hdr_crc_table = htole32(crc32(tbl->map_data, 139 le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); 140 hdr->hdr_crc_self = 0; 141 hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); 142 143 gpt_write(fd, gpt); 144 gpt_write(fd, tbl); 145 146 hdr = tpg->map_data; 147 ent = (void*)((char*)lbt->map_data + i * le32toh(hdr->hdr_entsz)); 148 149 le_uuid_enc(&ent->ent_type, &type); 150 ent->ent_lba_start = htole64(map->map_start); 151 ent->ent_lba_end = htole64(map->map_start + map->map_size - 1LL); 152 153 hdr->hdr_crc_table = htole32(crc32(lbt->map_data, 154 le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); 155 hdr->hdr_crc_self = 0; 156 hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); 157 158 gpt_write(fd, lbt); 159 gpt_write(fd, tpg); 160 161 #ifdef __FreeBSD__ 162 printf("%sp%u added\n", device_name, i + 1); 163 #endif 164 #ifdef __NetBSD__ 165 printf("Partition added, use:\n"); 166 printf("\tdkctl %s addwedge <wedgename> %" PRIu64 " %" PRIu64 167 " <type>\n", device_arg, map->map_start, map->map_size); 168 printf("to create a wedge for it\n"); 169 #endif 170 } 171 172 int 173 cmd_add(int argc, char *argv[]) 174 { 175 char *p; 176 int ch, fd; 177 178 /* Get the migrate options */ 179 while ((ch = getopt(argc, argv, "b:i:s:t:")) != -1) { 180 switch(ch) { 181 case 'b': 182 if (block > 0) 183 usage_add(); 184 block = strtoll(optarg, &p, 10); 185 if (*p != 0 || block < 1) 186 usage_add(); 187 break; 188 case 'i': 189 if (entry > 0) 190 usage_add(); 191 entry = strtoul(optarg, &p, 10); 192 if (*p != 0 || entry < 1) 193 usage_add(); 194 break; 195 case 's': 196 if (size > 0) 197 usage_add(); 198 size = strtoll(optarg, &p, 10); 199 if (*p != 0 || size < 1) 200 usage_add(); 201 break; 202 case 't': 203 if (!uuid_is_nil(&type, NULL)) 204 usage_add(); 205 if (parse_uuid(optarg, &type) != 0) 206 usage_add(); 207 break; 208 default: 209 usage_add(); 210 } 211 } 212 213 if (argc == optind) 214 usage_add(); 215 216 /* Create NetBSD FFS partitions by default. */ 217 if (uuid_is_nil(&type, NULL)) { 218 uuid_t nb_ffs = GPT_ENT_TYPE_NETBSD_FFS; 219 type = nb_ffs; 220 } 221 222 while (optind < argc) { 223 fd = gpt_open(argv[optind++]); 224 if (fd == -1) { 225 warn("unable to open device '%s'", device_name); 226 continue; 227 } 228 229 add(fd); 230 231 gpt_close(fd); 232 } 233 234 return (0); 235 } 236