backup.c revision 1.13
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 #if HAVE_NBTOOL_CONFIG_H 28 #include "nbtool_config.h" 29 #endif 30 31 #include <sys/cdefs.h> 32 #ifdef __FBSDID 33 __FBSDID("$FreeBSD: src/sbin/gpt/show.c,v 1.14 2006/06/22 22:22:32 marcel Exp $"); 34 #endif 35 #ifdef __RCSID 36 __RCSID("$NetBSD: backup.c,v 1.13 2015/12/02 12:36:53 christos Exp $"); 37 #endif 38 39 #include <sys/bootblock.h> 40 #include <sys/types.h> 41 42 #include <err.h> 43 #include <stddef.h> 44 #include <stdio.h> 45 #include <stdlib.h> 46 #include <string.h> 47 #include <unistd.h> 48 #include <prop/proplib.h> 49 50 #include "map.h" 51 #include "gpt.h" 52 #include "gpt_private.h" 53 54 static const char *outfile = "/dev/stdout"; 55 56 static const char *backuphelp[] = { 57 "[-o outfile]", 58 }; 59 60 static int cmd_backup(gpt_t, int, char *[]); 61 62 struct gpt_cmd c_backup = { 63 "backup", 64 cmd_backup, 65 backuphelp, __arraycount(backuphelp), 66 GPT_READONLY, 67 }; 68 69 #define usage() gpt_usage(NULL, &c_backup) 70 71 #define PROP_ERR(x) if (!(x)) { \ 72 gpt_warnx(gpt, "proplib failure"); \ 73 return -1; \ 74 } 75 76 #define prop_uint(a) prop_number_create_unsigned_integer(a) 77 78 static int 79 store_mbr(gpt_t gpt, unsigned int i, const struct mbr *mbr, 80 prop_array_t *mbr_array) 81 { 82 prop_dictionary_t mbr_dict; 83 prop_number_t propnum; 84 const struct mbr_part *par = &mbr->mbr_part[i]; 85 bool rc; 86 87 if (mbr->mbr_part[i].part_typ == MBR_PTYPE_UNUSED) 88 return 0; 89 90 mbr_dict = prop_dictionary_create(); 91 PROP_ERR(mbr_dict); 92 propnum = prop_number_create_integer(i); 93 PROP_ERR(propnum); 94 rc = prop_dictionary_set(mbr_dict, "index", propnum); 95 PROP_ERR(rc); 96 propnum = prop_uint(par->part_flag); 97 PROP_ERR(propnum); 98 rc = prop_dictionary_set(mbr_dict, "flag", propnum); 99 PROP_ERR(rc); 100 propnum = prop_uint(par->part_shd); 101 PROP_ERR(propnum); 102 rc = prop_dictionary_set(mbr_dict, "start_head", propnum); 103 PROP_ERR(rc); 104 propnum = prop_uint(par->part_ssect); 105 PROP_ERR(propnum); 106 rc = prop_dictionary_set(mbr_dict, "start_sector", propnum); 107 PROP_ERR(rc); 108 propnum = prop_uint(par->part_scyl); 109 PROP_ERR(propnum); 110 rc = prop_dictionary_set(mbr_dict, "start_cylinder", propnum); 111 PROP_ERR(rc); 112 propnum = prop_uint(par->part_typ); 113 PROP_ERR(propnum); 114 rc = prop_dictionary_set(mbr_dict, "type", propnum); 115 PROP_ERR(rc); 116 propnum = prop_uint(par->part_ehd); 117 PROP_ERR(propnum); 118 rc = prop_dictionary_set(mbr_dict, "end_head", propnum); 119 PROP_ERR(rc); 120 propnum = prop_uint(par->part_esect); 121 PROP_ERR(propnum); 122 rc = prop_dictionary_set(mbr_dict, "end_sector", propnum); 123 PROP_ERR(rc); 124 propnum = prop_uint(par->part_ecyl); 125 PROP_ERR(propnum); 126 rc = prop_dictionary_set(mbr_dict, "end_cylinder", propnum); 127 PROP_ERR(rc); 128 propnum = prop_uint(le16toh(par->part_start_lo)); 129 PROP_ERR(propnum); 130 rc = prop_dictionary_set(mbr_dict, "lba_start_low", propnum); 131 PROP_ERR(rc); 132 propnum = prop_uint(le16toh(par->part_start_hi)); 133 PROP_ERR(propnum); 134 rc = prop_dictionary_set(mbr_dict, "lba_start_high", propnum); 135 PROP_ERR(rc); 136 propnum = prop_uint(le16toh(par->part_size_lo)); 137 PROP_ERR(propnum); 138 rc = prop_dictionary_set(mbr_dict, "lba_size_low", propnum); 139 PROP_ERR(rc); 140 propnum = prop_uint(le16toh(par->part_size_hi)); 141 PROP_ERR(propnum); 142 rc = prop_dictionary_set(mbr_dict, "lba_size_high", propnum); 143 if (*mbr_array == NULL) { 144 *mbr_array = prop_array_create(); 145 PROP_ERR(*mbr_array); 146 } 147 rc = prop_array_add(*mbr_array, mbr_dict); 148 PROP_ERR(rc); 149 return 0; 150 } 151 152 static int 153 store_gpt(gpt_t gpt, const struct gpt_hdr *hdr, prop_dictionary_t *type_dict) 154 { 155 prop_number_t propnum; 156 prop_string_t propstr; 157 char buf[128]; 158 bool rc; 159 160 *type_dict = prop_dictionary_create(); 161 PROP_ERR(type_dict); 162 propnum = prop_uint(le32toh(hdr->hdr_revision)); 163 PROP_ERR(propnum); 164 rc = prop_dictionary_set(*type_dict, "revision", propnum); 165 PROP_ERR(rc); 166 gpt_uuid_snprintf(buf, sizeof(buf), "%d", hdr->hdr_guid); 167 propstr = prop_string_create_cstring(buf); 168 PROP_ERR(propstr); 169 rc = prop_dictionary_set(*type_dict, "guid", propstr); 170 PROP_ERR(rc); 171 propnum = prop_number_create_integer(le32toh(hdr->hdr_entries)); 172 PROP_ERR(propnum); 173 rc = prop_dictionary_set(*type_dict, "entries", propnum); 174 PROP_ERR(rc); 175 return 0; 176 } 177 178 static int 179 store_tbl(gpt_t gpt, const map_t m, prop_dictionary_t *type_dict) 180 { 181 const struct gpt_ent *ent; 182 unsigned int i; 183 prop_dictionary_t gpt_dict; 184 prop_array_t gpt_array; 185 prop_number_t propnum; 186 prop_string_t propstr; 187 char buf[128]; 188 uint8_t utfbuf[__arraycount(ent->ent_name) * 3 + 1]; 189 bool rc; 190 191 *type_dict = prop_dictionary_create(); 192 PROP_ERR(*type_dict); 193 194 ent = m->map_data; 195 gpt_array = prop_array_create(); 196 PROP_ERR(gpt_array); 197 for (i = 1, ent = m->map_data; 198 (const char *)ent < (const char *)(m->map_data) + 199 m->map_size * gpt->secsz; i++, ent++) { 200 gpt_dict = prop_dictionary_create(); 201 PROP_ERR(gpt_dict); 202 propnum = prop_number_create_integer(i); 203 PROP_ERR(propnum); 204 rc = prop_dictionary_set(gpt_dict, "index", propnum); 205 PROP_ERR(propnum); 206 gpt_uuid_snprintf(buf, sizeof(buf), "%d", ent->ent_type); 207 propstr = prop_string_create_cstring(buf); 208 PROP_ERR(propstr); 209 rc = prop_dictionary_set(gpt_dict, "type", propstr); 210 gpt_uuid_snprintf(buf, sizeof(buf), "%d", ent->ent_guid); 211 propstr = prop_string_create_cstring(buf); 212 PROP_ERR(propstr); 213 rc = prop_dictionary_set(gpt_dict, "guid", propstr); 214 PROP_ERR(propstr); 215 propnum = prop_uint(le64toh(ent->ent_lba_start)); 216 PROP_ERR(propnum); 217 rc = prop_dictionary_set(gpt_dict, "start", propnum); 218 PROP_ERR(rc); 219 propnum = prop_uint(le64toh(ent->ent_lba_end)); 220 PROP_ERR(rc); 221 rc = prop_dictionary_set(gpt_dict, "end", propnum); 222 PROP_ERR(rc); 223 propnum = prop_uint(le64toh(ent->ent_attr)); 224 PROP_ERR(propnum); 225 rc = prop_dictionary_set(gpt_dict, "attributes", propnum); 226 PROP_ERR(rc); 227 utf16_to_utf8(ent->ent_name, utfbuf, sizeof(utfbuf)); 228 if (utfbuf[0] != '\0') { 229 propstr = prop_string_create_cstring((char *)utfbuf); 230 PROP_ERR(propstr); 231 rc = prop_dictionary_set(gpt_dict, "name", propstr); 232 PROP_ERR(rc); 233 } 234 rc = prop_array_add(gpt_array, gpt_dict); 235 PROP_ERR(rc); 236 } 237 rc = prop_dictionary_set(*type_dict, "gpt_array", gpt_array); 238 PROP_ERR(rc); 239 prop_object_release(gpt_array); 240 return 0; 241 } 242 243 static int 244 backup(gpt_t gpt) 245 { 246 map_t m; 247 struct mbr *mbr; 248 unsigned int i; 249 prop_dictionary_t props, type_dict; 250 prop_array_t mbr_array; 251 prop_data_t propdata; 252 prop_number_t propnum; 253 char *propext; 254 bool rc; 255 FILE *fp; 256 257 props = prop_dictionary_create(); 258 PROP_ERR(props); 259 propnum = prop_number_create_integer(gpt->secsz); 260 PROP_ERR(propnum); 261 rc = prop_dictionary_set(props, "sector_size", propnum); 262 PROP_ERR(rc); 263 m = map_first(gpt); 264 while (m != NULL) { 265 switch (m->map_type) { 266 case MAP_TYPE_MBR: 267 case MAP_TYPE_PMBR: 268 type_dict = prop_dictionary_create(); 269 PROP_ERR(type_dict); 270 mbr = m->map_data; 271 propdata = prop_data_create_data_nocopy(mbr->mbr_code, 272 sizeof(mbr->mbr_code)); 273 PROP_ERR(propdata); 274 rc = prop_dictionary_set(type_dict, "code", propdata); 275 PROP_ERR(rc); 276 mbr_array = NULL; 277 for (i = 0; i < 4; i++) { 278 if (store_mbr(gpt, i, mbr, &mbr_array) == -1) 279 return -1; 280 } 281 if (mbr_array != NULL) { 282 rc = prop_dictionary_set(type_dict, 283 "mbr_array", mbr_array); 284 PROP_ERR(rc); 285 prop_object_release(mbr_array); 286 } 287 rc = prop_dictionary_set(props, "MBR", type_dict); 288 PROP_ERR(rc); 289 prop_object_release(type_dict); 290 break; 291 case MAP_TYPE_PRI_GPT_HDR: 292 if (store_gpt(gpt, m->map_data, &type_dict) == -1) 293 return -1; 294 295 rc = prop_dictionary_set(props, "GPT_HDR", type_dict); 296 PROP_ERR(rc); 297 prop_object_release(type_dict); 298 break; 299 case MAP_TYPE_PRI_GPT_TBL: 300 if (store_tbl(gpt, m, &type_dict) == -1) 301 return -1; 302 rc = prop_dictionary_set(props, "GPT_TBL", type_dict); 303 PROP_ERR(rc); 304 prop_object_release(type_dict); 305 break; 306 } 307 m = m->map_next; 308 } 309 propext = prop_dictionary_externalize(props); 310 PROP_ERR(propext); 311 prop_object_release(props); 312 if ((fp = fopen(outfile, "w")) == NULL) { 313 gpt_warn(gpt, "Can't open `%s'", outfile); 314 return -1; 315 } 316 fputs(propext, fp); 317 fclose(fp); 318 free(propext); 319 return 0; 320 } 321 322 static int 323 cmd_backup(gpt_t gpt, int argc, char *argv[]) 324 { 325 int ch; 326 327 while ((ch = getopt(argc, argv, "o:")) != -1) { 328 switch(ch) { 329 case 'o': 330 outfile = optarg; 331 break; 332 default: 333 return usage(); 334 } 335 } 336 if (argc != optind) 337 return usage(); 338 339 return backup(gpt); 340 } 341
Indexes created Tue Sep 23 07:09:52 GMT 2025