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b103cd4113
UUIDs can then be limited to those cases when an alias doesn't exist. This greatly increases the likelyhood that a sysadmin finishes the partitioning without intermittent mental breakdowns. Current aliases are "efi", "swap" and "ufs". While here, staticize global variables and expand the usage message. Approved by: re (blanket)
202 lines
4.8 KiB
C
202 lines
4.8 KiB
C
/*
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* Copyright (c) 2002 Marcel Moolenaar
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#include <sys/types.h>
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#include <sys/disklabel.h>
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#include <sys/gpt.h>
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#include <err.h>
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#include <stddef.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <uuid.h>
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#include "map.h"
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#include "gpt.h"
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static uuid_t type;
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static off_t block, size;
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static void
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usage_add(void)
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{
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fprintf(stderr,
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"usage: %s [-b lba] [-s lba] [-t uuid] device\n", getprogname());
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exit(1);
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}
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static void
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add(int fd)
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{
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map_t *gpt, *tpg;
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map_t *tbl, *lbt;
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map_t *map;
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struct gpt_hdr *hdr;
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struct gpt_ent *ent;
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unsigned int i;
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gpt = map_find(MAP_TYPE_PRI_GPT_HDR);
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if (gpt == NULL) {
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warnx("%s: error: device does not contain a GPT", device_name);
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return;
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}
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tpg = map_find(MAP_TYPE_SEC_GPT_HDR);
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if (tpg == NULL) {
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warnx("%s: error: no secundary table; run recover",
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device_name);
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return;
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}
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tbl = map_find(MAP_TYPE_PRI_GPT_TBL);
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lbt = map_find(MAP_TYPE_SEC_GPT_TBL);
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if (tbl == NULL || lbt == NULL) {
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warnx("%s: error: run recover -- trust me", device_name);
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return;
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}
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/* Create UFS partitions by default. */
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if (uuid_is_nil(&type, NULL)) {
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uuid_t ufs = GPT_ENT_TYPE_FREEBSD_UFS;
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type = ufs;
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}
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map = map_alloc(block, size);
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if (map == NULL) {
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warnx("%s: error: no space available on device", device_name);
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return;
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}
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/* Find empty slot in GPT table. */
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hdr = gpt->map_data;
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for (i = 0; i < hdr->hdr_entries; i++) {
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ent = (void*)((char*)tbl->map_data + i * hdr->hdr_entsz);
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if (uuid_is_nil(&ent->ent_type, NULL))
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break;
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}
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if (i == hdr->hdr_entries) {
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warnx("%s: error: no available table entries", device_name);
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return;
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}
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ent->ent_type = type;
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ent->ent_lba_start = map->map_start;
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ent->ent_lba_end = map->map_start + map->map_size - 1LL;
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hdr->hdr_crc_table = crc32(tbl->map_data,
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hdr->hdr_entries * hdr->hdr_entsz);
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hdr->hdr_crc_self = 0;
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hdr->hdr_crc_self = crc32(hdr, hdr->hdr_size);
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gpt_write(fd, gpt);
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gpt_write(fd, tbl);
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hdr = tpg->map_data;
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ent = (void*)((char*)lbt->map_data + i * hdr->hdr_entsz);
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ent->ent_type = type;
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ent->ent_lba_start = map->map_start;
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ent->ent_lba_end = map->map_start + map->map_size - 1LL;
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hdr->hdr_crc_table = crc32(lbt->map_data,
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hdr->hdr_entries * hdr->hdr_entsz);
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hdr->hdr_crc_self = 0;
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hdr->hdr_crc_self = crc32(hdr, hdr->hdr_size);
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gpt_write(fd, lbt);
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gpt_write(fd, tpg);
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}
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int
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cmd_add(int argc, char *argv[])
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{
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char *p;
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int ch, fd;
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uint32_t status;
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/* Get the migrate options */
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while ((ch = getopt(argc, argv, "b:s:t:")) != -1) {
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switch(ch) {
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case 'b':
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if (block > 0)
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usage_add();
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block = strtol(optarg, &p, 10);
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if (*p != 0 || block < 1)
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usage_add();
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break;
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case 's':
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if (size > 0)
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usage_add();
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size = strtol(optarg, &p, 10);
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if (*p != 0 || size < 1)
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usage_add();
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break;
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case 't':
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if (!uuid_is_nil(&type, NULL))
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usage_add();
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uuid_from_string(optarg, &type, &status);
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if (status != uuid_s_ok) {
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if (strcmp(optarg, "efi") == 0) {
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uuid_t efi = GPT_ENT_TYPE_EFI;
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type = efi;
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} else if (strcmp(optarg, "swap") == 0) {
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uuid_t sw = GPT_ENT_TYPE_FREEBSD_SWAP;
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type = sw;
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} else if (strcmp(optarg, "ufs") == 0) {
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uuid_t ufs = GPT_ENT_TYPE_FREEBSD_UFS;
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type = ufs;
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} else
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usage_add();
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}
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break;
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default:
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usage_add();
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}
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}
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if (argc == optind)
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usage_add();
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while (optind < argc) {
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fd = gpt_open(argv[optind++]);
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if (fd == -1) {
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warn("unable to open device '%s'", device_name);
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continue;
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}
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add(fd);
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gpt_close(fd);
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}
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return (0);
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}
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