unset.c revision 1.2.8.2
1 1.2.8.2 tls /*- 2 1.2.8.2 tls * Copyright (c) 2002 Marcel Moolenaar 3 1.2.8.2 tls * All rights reserved. 4 1.2.8.2 tls * 5 1.2.8.2 tls * Redistribution and use in source and binary forms, with or without 6 1.2.8.2 tls * modification, are permitted provided that the following conditions 7 1.2.8.2 tls * are met: 8 1.2.8.2 tls * 9 1.2.8.2 tls * 1. Redistributions of source code must retain the above copyright 10 1.2.8.2 tls * notice, this list of conditions and the following disclaimer. 11 1.2.8.2 tls * 2. Redistributions in binary form must reproduce the above copyright 12 1.2.8.2 tls * notice, this list of conditions and the following disclaimer in the 13 1.2.8.2 tls * documentation and/or other materials provided with the distribution. 14 1.2.8.2 tls * 15 1.2.8.2 tls * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 1.2.8.2 tls * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 1.2.8.2 tls * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 1.2.8.2 tls * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 1.2.8.2 tls * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 1.2.8.2 tls * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 1.2.8.2 tls * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 1.2.8.2 tls * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 1.2.8.2 tls * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 1.2.8.2 tls * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 1.2.8.2 tls */ 26 1.2.8.2 tls 27 1.2.8.2 tls #include <sys/cdefs.h> 28 1.2.8.2 tls #ifdef __FBSDID 29 1.2.8.2 tls __FBSDID("$FreeBSD: src/sbin/gpt/add.c,v 1.14 2006/06/22 22:05:28 marcel Exp $"); 30 1.2.8.2 tls #endif 31 1.2.8.2 tls #ifdef __RCSID 32 1.2.8.2 tls __RCSID("$NetBSD: unset.c,v 1.2.8.2 2014/08/20 00:02:25 tls Exp $"); 33 1.2.8.2 tls #endif 34 1.2.8.2 tls 35 1.2.8.2 tls #include <sys/types.h> 36 1.2.8.2 tls 37 1.2.8.2 tls #include <err.h> 38 1.2.8.2 tls #include <stddef.h> 39 1.2.8.2 tls #include <stdio.h> 40 1.2.8.2 tls #include <stdlib.h> 41 1.2.8.2 tls #include <string.h> 42 1.2.8.2 tls #include <unistd.h> 43 1.2.8.2 tls #include <inttypes.h> 44 1.2.8.2 tls 45 1.2.8.2 tls #include "map.h" 46 1.2.8.2 tls #include "gpt.h" 47 1.2.8.2 tls 48 1.2.8.2 tls static unsigned int entry; 49 1.2.8.2 tls static uint64_t attributes; 50 1.2.8.2 tls 51 1.2.8.2 tls const char unsetmsg[] = "unset -a attribute -i index device ..."; 52 1.2.8.2 tls 53 1.2.8.2 tls __dead static void 54 1.2.8.2 tls usage_unset(void) 55 1.2.8.2 tls { 56 1.2.8.2 tls 57 1.2.8.2 tls fprintf(stderr, 58 1.2.8.2 tls "usage: %s %s\n", getprogname(), unsetmsg); 59 1.2.8.2 tls exit(1); 60 1.2.8.2 tls } 61 1.2.8.2 tls 62 1.2.8.2 tls static void 63 1.2.8.2 tls unset(int fd) 64 1.2.8.2 tls { 65 1.2.8.2 tls uuid_t uuid; 66 1.2.8.2 tls map_t *gpt, *tpg; 67 1.2.8.2 tls map_t *tbl, *lbt; 68 1.2.8.2 tls struct gpt_hdr *hdr; 69 1.2.8.2 tls struct gpt_ent *ent; 70 1.2.8.2 tls unsigned int i; 71 1.2.8.2 tls 72 1.2.8.2 tls 73 1.2.8.2 tls gpt = map_find(MAP_TYPE_PRI_GPT_HDR); 74 1.2.8.2 tls ent = NULL; 75 1.2.8.2 tls if (gpt == NULL) { 76 1.2.8.2 tls warnx("%s: error: no primary GPT header; run create or recover", 77 1.2.8.2 tls device_name); 78 1.2.8.2 tls return; 79 1.2.8.2 tls } 80 1.2.8.2 tls 81 1.2.8.2 tls tpg = map_find(MAP_TYPE_SEC_GPT_HDR); 82 1.2.8.2 tls if (tpg == NULL) { 83 1.2.8.2 tls warnx("%s: error: no secondary GPT header; run recover", 84 1.2.8.2 tls device_name); 85 1.2.8.2 tls return; 86 1.2.8.2 tls } 87 1.2.8.2 tls 88 1.2.8.2 tls tbl = map_find(MAP_TYPE_PRI_GPT_TBL); 89 1.2.8.2 tls lbt = map_find(MAP_TYPE_SEC_GPT_TBL); 90 1.2.8.2 tls if (tbl == NULL || lbt == NULL) { 91 1.2.8.2 tls warnx("%s: error: run recover -- trust me", device_name); 92 1.2.8.2 tls return; 93 1.2.8.2 tls } 94 1.2.8.2 tls 95 1.2.8.2 tls hdr = gpt->map_data; 96 1.2.8.2 tls if (entry > le32toh(hdr->hdr_entries)) { 97 1.2.8.2 tls warnx("%s: error: index %u out of range (%u max)", device_name, 98 1.2.8.2 tls entry, le32toh(hdr->hdr_entries)); 99 1.2.8.2 tls return; 100 1.2.8.2 tls } 101 1.2.8.2 tls 102 1.2.8.2 tls i = entry - 1; 103 1.2.8.2 tls ent = (void*)((char*)tbl->map_data + i * 104 1.2.8.2 tls le32toh(hdr->hdr_entsz)); 105 1.2.8.2 tls le_uuid_dec(ent->ent_type, &uuid); 106 1.2.8.2 tls if (uuid_is_nil(&uuid, NULL)) { 107 1.2.8.2 tls warnx("%s: error: entry at index %u is unused", 108 1.2.8.2 tls device_name, entry); 109 1.2.8.2 tls return; 110 1.2.8.2 tls } 111 1.2.8.2 tls 112 1.2.8.2 tls ent->ent_attr &= ~attributes; 113 1.2.8.2 tls 114 1.2.8.2 tls hdr->hdr_crc_table = htole32(crc32(tbl->map_data, 115 1.2.8.2 tls le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); 116 1.2.8.2 tls hdr->hdr_crc_self = 0; 117 1.2.8.2 tls hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); 118 1.2.8.2 tls 119 1.2.8.2 tls gpt_write(fd, gpt); 120 1.2.8.2 tls gpt_write(fd, tbl); 121 1.2.8.2 tls 122 1.2.8.2 tls hdr = tpg->map_data; 123 1.2.8.2 tls ent = (void*)((char*)lbt->map_data + i * le32toh(hdr->hdr_entsz)); 124 1.2.8.2 tls ent->ent_attr &= ~attributes; 125 1.2.8.2 tls 126 1.2.8.2 tls hdr->hdr_crc_table = htole32(crc32(lbt->map_data, 127 1.2.8.2 tls le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); 128 1.2.8.2 tls hdr->hdr_crc_self = 0; 129 1.2.8.2 tls hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); 130 1.2.8.2 tls 131 1.2.8.2 tls gpt_write(fd, lbt); 132 1.2.8.2 tls gpt_write(fd, tpg); 133 1.2.8.2 tls 134 1.2.8.2 tls printf("Partition %d attributes updated\n", entry); 135 1.2.8.2 tls } 136 1.2.8.2 tls 137 1.2.8.2 tls int 138 1.2.8.2 tls cmd_unset(int argc, char *argv[]) 139 1.2.8.2 tls { 140 1.2.8.2 tls char *p; 141 1.2.8.2 tls int ch, fd; 142 1.2.8.2 tls 143 1.2.8.2 tls while ((ch = getopt(argc, argv, "a:i:")) != -1) { 144 1.2.8.2 tls switch(ch) { 145 1.2.8.2 tls case 'a': 146 1.2.8.2 tls if (strcmp(optarg, "biosboot") == 0) 147 1.2.8.2 tls attributes |= GPT_ENT_ATTR_LEGACY_BIOS_BOOTABLE; 148 1.2.8.2 tls else if (strcmp(optarg, "bootme") == 0) 149 1.2.8.2 tls attributes |= GPT_ENT_ATTR_BOOTME; 150 1.2.8.2 tls else if (strcmp(optarg, "bootonce") == 0) 151 1.2.8.2 tls attributes |= GPT_ENT_ATTR_BOOTONCE; 152 1.2.8.2 tls else if (strcmp(optarg, "bootfailed") == 0) 153 1.2.8.2 tls attributes |= GPT_ENT_ATTR_BOOTFAILED; 154 1.2.8.2 tls else 155 1.2.8.2 tls usage_unset(); 156 1.2.8.2 tls break; 157 1.2.8.2 tls case 'i': 158 1.2.8.2 tls if (entry > 0) 159 1.2.8.2 tls usage_unset(); 160 1.2.8.2 tls entry = strtoul(optarg, &p, 10); 161 1.2.8.2 tls if (*p != 0 || entry < 1) 162 1.2.8.2 tls usage_unset(); 163 1.2.8.2 tls break; 164 1.2.8.2 tls default: 165 1.2.8.2 tls usage_unset(); 166 1.2.8.2 tls } 167 1.2.8.2 tls } 168 1.2.8.2 tls 169 1.2.8.2 tls if (argc == optind) 170 1.2.8.2 tls usage_unset(); 171 1.2.8.2 tls 172 1.2.8.2 tls if (entry == 0 || attributes == 0) 173 1.2.8.2 tls usage_unset(); 174 1.2.8.2 tls 175 1.2.8.2 tls while (optind < argc) { 176 1.2.8.2 tls fd = gpt_open(argv[optind++]); 177 1.2.8.2 tls if (fd == -1) { 178 1.2.8.2 tls warn("unable to open device '%s'", device_name); 179 1.2.8.2 tls continue; 180 1.2.8.2 tls } 181 1.2.8.2 tls 182 1.2.8.2 tls unset(fd); 183 1.2.8.2 tls 184 1.2.8.2 tls gpt_close(fd); 185 1.2.8.2 tls } 186 1.2.8.2 tls 187 1.2.8.2 tls return 0; 188 1.2.8.2 tls } 189
Indexes created Wed Oct 15 07:09:58 GMT 2025