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: set.c,v 1.2 2013/12/10 01:05:00 jnemeth 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 unsigned int entry; 49 static uint64_t attributes; 50 51 const char setmsg[] = "set -a attribute -i index device ..."; 52 53 __dead static void 54 usage_set(void) 55 { 56 57 fprintf(stderr, 58 "usage: %s %s\n", getprogname(), setmsg); 59 exit(1); 60 } 61 62 static void 63 set(int fd) 64 { 65 uuid_t uuid; 66 map_t *gpt, *tpg; 67 map_t *tbl, *lbt; 68 struct gpt_hdr *hdr; 69 struct gpt_ent *ent; 70 unsigned int i; 71 72 73 gpt = map_find(MAP_TYPE_PRI_GPT_HDR); 74 ent = NULL; 75 if (gpt == NULL) { 76 warnx("%s: error: no primary GPT header; run create or recover", 77 device_name); 78 return; 79 } 80 81 tpg = map_find(MAP_TYPE_SEC_GPT_HDR); 82 if (tpg == NULL) { 83 warnx("%s: error: no secondary GPT header; run recover", 84 device_name); 85 return; 86 } 87 88 tbl = map_find(MAP_TYPE_PRI_GPT_TBL); 89 lbt = map_find(MAP_TYPE_SEC_GPT_TBL); 90 if (tbl == NULL || lbt == NULL) { 91 warnx("%s: error: run recover -- trust me", device_name); 92 return; 93 } 94 95 hdr = gpt->map_data; 96 if (entry > le32toh(hdr->hdr_entries)) { 97 warnx("%s: error: index %u out of range (%u max)", device_name, 98 entry, le32toh(hdr->hdr_entries)); 99 return; 100 } 101 102 i = entry - 1; 103 ent = (void*)((char*)tbl->map_data + i * 104 le32toh(hdr->hdr_entsz)); 105 le_uuid_dec(ent->ent_type, &uuid); 106 if (uuid_is_nil(&uuid, NULL)) { 107 warnx("%s: error: entry at index %u is unused", 108 device_name, entry); 109 return; 110 } 111 112 ent->ent_attr |= attributes; 113 114 hdr->hdr_crc_table = htole32(crc32(tbl->map_data, 115 le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); 116 hdr->hdr_crc_self = 0; 117 hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); 118 119 gpt_write(fd, gpt); 120 gpt_write(fd, tbl); 121 122 hdr = tpg->map_data; 123 ent = (void*)((char*)lbt->map_data + i * le32toh(hdr->hdr_entsz)); 124 ent->ent_attr |= attributes; 125 126 hdr->hdr_crc_table = htole32(crc32(lbt->map_data, 127 le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); 128 hdr->hdr_crc_self = 0; 129 hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); 130 131 gpt_write(fd, lbt); 132 gpt_write(fd, tpg); 133 134 printf("Partition %d attributes updated\n", entry); 135 } 136 137 int 138 cmd_set(int argc, char *argv[]) 139 { 140 char *p; 141 int ch, fd; 142 143 while ((ch = getopt(argc, argv, "a:i:")) != -1) { 144 switch(ch) { 145 case 'a': 146 if (strcmp(optarg, "biosboot") == 0) 147 attributes |= GPT_ENT_ATTR_LEGACY_BIOS_BOOTABLE; 148 else if (strcmp(optarg, "bootme") == 0) 149 attributes |= GPT_ENT_ATTR_BOOTME; 150 else if (strcmp(optarg, "bootonce") == 0) 151 attributes |= GPT_ENT_ATTR_BOOTONCE; 152 else if (strcmp(optarg, "bootfailed") == 0) 153 attributes |= GPT_ENT_ATTR_BOOTFAILED; 154 else 155 usage_set(); 156 break; 157 case 'i': 158 if (entry > 0) 159 usage_set(); 160 entry = strtoul(optarg, &p, 10); 161 if (*p != 0 || entry < 1) 162 usage_set(); 163 break; 164 default: 165 usage_set(); 166 } 167 } 168 169 if (argc == optind) 170 usage_set(); 171 172 if (entry == 0 || attributes == 0) 173 usage_set(); 174 175 while (optind < argc) { 176 fd = gpt_open(argv[optind++]); 177 if (fd == -1) { 178 warn("unable to open device '%s'", device_name); 179 continue; 180 } 181 182 set(fd); 183 184 gpt_close(fd); 185 } 186 187 return 0; 188 } 189