| /*- |
| * Copyright (c) 2004 Marcel Moolenaar |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
| * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
| * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
| * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
| * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
| * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #ifndef LINUX |
| #include <sys/cdefs.h> |
| __FBSDID("$FreeBSD$"); |
| #endif |
| |
| #include <sys/types.h> |
| |
| #include <err.h> |
| #include <stddef.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <unistd.h> |
| |
| #include "map.h" |
| #include "gpt.h" |
| |
| static int all; |
| static uuid_t type; |
| static off_t block, size; |
| static unsigned int entry; |
| |
| static void |
| usage_remove(void) |
| { |
| |
| fprintf(stderr, |
| "usage: %s -a device ...\n" |
| " %s [-b lba] [-i index] [-s lba] [-t uuid] device ...\n", |
| getprogname(), getprogname()); |
| exit(1); |
| } |
| |
| static void |
| rem(int fd) |
| { |
| uuid_t uuid; |
| map_t *gpt, *tpg; |
| map_t *tbl, *lbt; |
| map_t *m; |
| struct gpt_hdr *hdr; |
| struct gpt_ent *ent; |
| unsigned int i; |
| |
| gpt = map_find(MAP_TYPE_PRI_GPT_HDR); |
| if (gpt == NULL) { |
| warnx("%s: error: no primary GPT header; run create or recover", |
| device_name); |
| return; |
| } |
| |
| tpg = map_find(MAP_TYPE_SEC_GPT_HDR); |
| if (tpg == NULL) { |
| warnx("%s: error: no secondary GPT header; run recover", |
| device_name); |
| return; |
| } |
| |
| tbl = map_find(MAP_TYPE_PRI_GPT_TBL); |
| lbt = map_find(MAP_TYPE_SEC_GPT_TBL); |
| if (tbl == NULL || lbt == NULL) { |
| warnx("%s: error: run recover -- trust me", device_name); |
| return; |
| } |
| |
| /* Remove all matching entries in the map. */ |
| for (m = map_first(); m != NULL; m = m->map_next) { |
| if (m->map_type != MAP_TYPE_GPT_PART || m->map_index < 1) |
| continue; |
| if (entry > 0 && entry != m->map_index) |
| continue; |
| if (block > 0 && block != m->map_start) |
| continue; |
| if (size > 0 && size != m->map_size) |
| continue; |
| |
| i = m->map_index - 1; |
| |
| hdr = gpt->map_data; |
| ent = (void*)((char*)tbl->map_data + i * |
| le32toh(hdr->hdr_entsz)); |
| le_uuid_dec(&ent->ent_type, &uuid); |
| if (!uuid_is_nil(&type, NULL) && |
| !uuid_equal(&type, &uuid, NULL)) |
| continue; |
| |
| /* Remove the primary entry by clearing the partition type. */ |
| uuid_create_nil(&ent->ent_type, NULL); |
| |
| hdr->hdr_crc_table = htole32(crc32(tbl->map_data, |
| le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); |
| hdr->hdr_crc_self = 0; |
| hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); |
| |
| gpt_write(fd, gpt); |
| gpt_write(fd, tbl); |
| |
| hdr = tpg->map_data; |
| ent = (void*)((char*)lbt->map_data + i * |
| le32toh(hdr->hdr_entsz)); |
| |
| /* Remove the secundary entry. */ |
| uuid_create_nil(&ent->ent_type, NULL); |
| |
| hdr->hdr_crc_table = htole32(crc32(lbt->map_data, |
| le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz))); |
| hdr->hdr_crc_self = 0; |
| hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size))); |
| |
| gpt_write(fd, lbt); |
| gpt_write(fd, tpg); |
| |
| printf("%sp%u removed\n", device_name, m->map_index); |
| } |
| } |
| |
| int |
| cmd_remove(int argc, char *argv[]) |
| { |
| char *p; |
| int ch, fd; |
| |
| /* Get the remove options */ |
| while ((ch = getopt(argc, argv, "ab:i:s:t:")) != -1) { |
| switch(ch) { |
| case 'a': |
| if (all > 0) |
| usage_remove(); |
| all = 1; |
| break; |
| case 'b': |
| if (block > 0) |
| usage_remove(); |
| block = strtoll(optarg, &p, 10); |
| if (*p != 0 || block < 1) |
| usage_remove(); |
| break; |
| case 'i': |
| if (entry > 0) |
| usage_remove(); |
| entry = strtol(optarg, &p, 10); |
| if (*p != 0 || entry < 1) |
| usage_remove(); |
| break; |
| case 's': |
| if (size > 0) |
| usage_remove(); |
| size = strtoll(optarg, &p, 10); |
| if (*p != 0 || size < 1) |
| usage_remove(); |
| break; |
| case 't': |
| if (!uuid_is_nil(&type, NULL)) |
| usage_remove(); |
| if (parse_uuid(optarg, &type) != 0) |
| usage_remove(); |
| break; |
| default: |
| usage_remove(); |
| } |
| } |
| |
| if (!all ^ |
| (block > 0 || entry > 0 || size > 0 || !uuid_is_nil(&type, NULL))) |
| usage_remove(); |
| |
| if (argc == optind) |
| usage_remove(); |
| |
| while (optind < argc) { |
| fd = gpt_open(argv[optind++]); |
| if (fd == -1) { |
| warn("unable to open device '%s'", device_name); |
| continue; |
| } |
| |
| rem(fd); |
| |
| gpt_close(fd); |
| } |
| |
| return (0); |
| } |