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c10b34ed19
partition size. On 32-bit platforms sizeof(long) < sizeof(off_t) and using strtol(3) would prevent partitions larger than 4G sectors or beyond 4G blocks. PR: bin/103991 MFC after: 3 days
247 lines
5.7 KiB
C
247 lines
5.7 KiB
C
/*-
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* Copyright (c) 2005 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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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.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 "map.h"
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#include "gpt.h"
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static int all;
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static uuid_t type;
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static off_t block, size;
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static unsigned int entry;
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static uint8_t *name;
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static void
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usage_label(void)
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{
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const char *common = "<-l label | -f file> device ...";
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fprintf(stderr,
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"usage: %s -a %s\n"
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" %s [-b lba] [-i index] [-s lba] [-t uuid] %s\n",
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getprogname(), common, getprogname(), common);
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exit(1);
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}
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static void
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label(int fd)
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{
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uuid_t uuid;
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map_t *gpt, *tpg;
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map_t *tbl, *lbt;
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map_t *m;
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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: no primary GPT header; run create or recover",
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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 secondary GPT header; 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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/* Relabel all matching entries in the map. */
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for (m = map_first(); m != NULL; m = m->map_next) {
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if (m->map_type != MAP_TYPE_GPT_PART || m->map_index < 1)
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continue;
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if (entry > 0 && entry != m->map_index)
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continue;
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if (block > 0 && block != m->map_start)
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continue;
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if (size > 0 && size != m->map_size)
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continue;
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i = m->map_index - 1;
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hdr = gpt->map_data;
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ent = (void*)((char*)tbl->map_data + i *
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le32toh(hdr->hdr_entsz));
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le_uuid_dec(&ent->ent_type, &uuid);
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if (!uuid_is_nil(&type, NULL) &&
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!uuid_equal(&type, &uuid, NULL))
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continue;
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/* Label the primary entry. */
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utf8_to_utf16(name, ent->ent_name, 36);
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hdr->hdr_crc_table = htole32(crc32(tbl->map_data,
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le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz)));
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hdr->hdr_crc_self = 0;
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hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(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 *
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le32toh(hdr->hdr_entsz));
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/* Label the secundary entry. */
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utf8_to_utf16(name, ent->ent_name, 36);
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hdr->hdr_crc_table = htole32(crc32(lbt->map_data,
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le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz)));
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hdr->hdr_crc_self = 0;
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hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size)));
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gpt_write(fd, lbt);
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gpt_write(fd, tpg);
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printf("%sp%u labeled\n", device_name, m->map_index);
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}
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}
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static void
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name_from_file(const char *fn)
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{
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FILE *f;
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char *p;
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size_t maxlen = 1024;
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size_t len;
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if (strcmp(fn, "-") != 0) {
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f = fopen(fn, "r");
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if (f == NULL)
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err(1, "unable to open file %s", fn);
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} else
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f = stdin;
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name = malloc(maxlen);
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len = fread(name, 1, maxlen - 1, f);
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if (ferror(f))
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err(1, "unable to read label from file %s", fn);
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if (f != stdin)
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fclose(f);
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name[len] = '\0';
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/* Only keep the first line, excluding the newline character. */
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p = strchr(name, '\n');
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if (p != NULL)
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*p = '\0';
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}
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int
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cmd_label(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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/* Get the label options */
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while ((ch = getopt(argc, argv, "ab:f:i:l:s:t:")) != -1) {
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switch(ch) {
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case 'a':
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if (all > 0)
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usage_label();
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all = 1;
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break;
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case 'b':
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if (block > 0)
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usage_label();
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block = strtoll(optarg, &p, 10);
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if (*p != 0 || block < 1)
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usage_label();
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break;
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case 'f':
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if (name != NULL)
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usage_label();
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name_from_file(optarg);
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break;
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case 'i':
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if (entry > 0)
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usage_label();
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entry = strtol(optarg, &p, 10);
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if (*p != 0 || entry < 1)
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usage_label();
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break;
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case 'l':
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if (name != NULL)
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usage_label();
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name = strdup(optarg);
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break;
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case 's':
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if (size > 0)
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usage_label();
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size = strtoll(optarg, &p, 10);
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if (*p != 0 || size < 1)
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usage_label();
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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_label();
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if (parse_uuid(optarg, &type) != 0)
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usage_label();
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break;
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default:
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usage_label();
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}
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}
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if (!all ^
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(block > 0 || entry > 0 || size > 0 || !uuid_is_nil(&type, NULL)))
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usage_label();
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if (name == NULL || argc == optind)
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usage_label();
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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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label(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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