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/add.c,v 1.14 2006/06/22 22:05:28 marcel Exp $"); 34 #endif 35 #ifdef __RCSID 36 __RCSID("$NetBSD: set.c,v 1.5 2014/09/30 18:00:00 christos Exp $"); 37 #endif 38 39 #include <sys/types.h> 40 41 #include <err.h> 42 #include <stddef.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <unistd.h> 47 48 #include "map.h" 49 #include "gpt.h" 50 51 static unsigned int entry; 52 static uint64_t attributes; 53 54 const char setmsg[] = "set -a attribute -i index device ..."; 55 56 __dead static void 57 usage_set(void) 58 { 59 60 fprintf(stderr, 61 "usage: %s %s\n", getprogname(), setmsg); 62 exit(1); 63 } 64 65 static void 66 set(int fd) 67 { 68 map_t *gpt, *tpg; 69 map_t *tbl, *lbt; 70 struct gpt_hdr *hdr; 71 struct gpt_ent *ent; 72 unsigned int i; 73 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 i = entry - 1; 105 ent = (void*)((char*)tbl->map_data + i * 106 le32toh(hdr->hdr_entsz)); 107 if (gpt_uuid_is_nil(ent->ent_type)) { 108 warnx("%s: error: entry at index %u is unused", 109 device_name, entry); 110 return; 111 } 112 113 ent->ent_attr |= attributes; 114 115 hdr->hdr_crc_table = htole32(crc32(tbl->map_data, 116 le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); 117 hdr->hdr_crc_self = 0; 118 hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); 119 120 gpt_write(fd, gpt); 121 gpt_write(fd, tbl); 122 123 hdr = tpg->map_data; 124 ent = (void*)((char*)lbt->map_data + i * le32toh(hdr->hdr_entsz)); 125 ent->ent_attr |= attributes; 126 127 hdr->hdr_crc_table = htole32(crc32(lbt->map_data, 128 le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); 129 hdr->hdr_crc_self = 0; 130 hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); 131 132 gpt_write(fd, lbt); 133 gpt_write(fd, tpg); 134 135 printf("Partition %d attributes updated\n", entry); 136 } 137 138 int 139 cmd_set(int argc, char *argv[]) 140 { 141 char *p; 142 int ch, fd; 143 144 while ((ch = getopt(argc, argv, "a:i:")) != -1) { 145 switch(ch) { 146 case 'a': 147 if (strcmp(optarg, "biosboot") == 0) 148 attributes |= GPT_ENT_ATTR_LEGACY_BIOS_BOOTABLE; 149 else if (strcmp(optarg, "bootme") == 0) 150 attributes |= GPT_ENT_ATTR_BOOTME; 151 else if (strcmp(optarg, "bootonce") == 0) 152 attributes |= GPT_ENT_ATTR_BOOTONCE; 153 else if (strcmp(optarg, "bootfailed") == 0) 154 attributes |= GPT_ENT_ATTR_BOOTFAILED; 155 else 156 usage_set(); 157 break; 158 case 'i': 159 if (entry > 0) 160 usage_set(); 161 entry = strtoul(optarg, &p, 10); 162 if (*p != 0 || entry < 1) 163 usage_set(); 164 break; 165 default: 166 usage_set(); 167 } 168 } 169 170 if (argc == optind) 171 usage_set(); 172 173 if (entry == 0 || attributes == 0) 174 usage_set(); 175 176 while (optind < argc) { 177 fd = gpt_open(argv[optind++]); 178 if (fd == -1) { 179 warn("unable to open device '%s'", device_name); 180 continue; 181 } 182 183 set(fd); 184 185 gpt_close(fd); 186 } 187 188 return 0; 189 } 190