Annotation of src/sbin/gpt/set.c, Revision 1.2.4.2
1.2.4.2 ! yamt 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$");
! 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: }
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