/*- * Copyright (c) 2005 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. */ #include #ifdef __FBSDID __FBSDID("$FreeBSD: src/sbin/gpt/label.c,v 1.3 2006/10/04 18:20:25 marcel Exp $"); #endif #ifdef __RCSID __RCSID("$NetBSD: label.c,v 1.3 2006/10/15 22:43:30 christos Exp $"); #endif #include #include #include #include #include #include #include #include "map.h" #include "gpt.h" static int all; static uuid_t type; static off_t block, size; static unsigned int entry; static uint8_t *name; static void usage_label(void) { const char *common = "<-l label | -f file> device ..."; fprintf(stderr, "usage: %s -a %s\n" " %s [-b lba] [-i index] [-s lba] [-t uuid] %s\n", getprogname(), common, getprogname(), common); exit(1); } static void label(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; } /* Relabel 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; /* Label the primary entry. */ utf8_to_utf16(name, ent->ent_name, 36); 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)); /* Label the secundary entry. */ utf8_to_utf16(name, ent->ent_name, 36); 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); #ifdef __FreeBSD__ printf("%sp%u labeled\n", device_name, m->map_index); #endif #ifdef __NetBSD__ printf("parition %d on %s labeled %s\n", m->map_index, device_name, name); #endif } } static void name_from_file(const char *fn) { FILE *f; char *p; size_t maxlen = 1024; size_t len; if (strcmp(fn, "-") != 0) { f = fopen(fn, "r"); if (f == NULL) err(1, "unable to open file %s", fn); } else f = stdin; name = malloc(maxlen); len = fread(name, 1, maxlen - 1, f); if (ferror(f)) err(1, "unable to read label from file %s", fn); if (f != stdin) fclose(f); name[len] = '\0'; /* Only keep the first line, excluding the newline character. */ p = strchr((const char *)name, '\n'); if (p != NULL) *p = '\0'; } int cmd_label(int argc, char *argv[]) { char *p; int ch, fd; /* Get the label options */ while ((ch = getopt(argc, argv, "ab:f:i:l:s:t:")) != -1) { switch(ch) { case 'a': if (all > 0) usage_label(); all = 1; break; case 'b': if (block > 0) usage_label(); block = strtoll(optarg, &p, 10); if (*p != 0 || block < 1) usage_label(); break; case 'f': if (name != NULL) usage_label(); name_from_file(optarg); break; case 'i': if (entry > 0) usage_label(); entry = strtol(optarg, &p, 10); if (*p != 0 || entry < 1) usage_label(); break; case 'l': if (name != NULL) usage_label(); name = (uint8_t *)strdup(optarg); break; case 's': if (size > 0) usage_label(); size = strtoll(optarg, &p, 10); if (*p != 0 || size < 1) usage_label(); break; case 't': if (!uuid_is_nil(&type, NULL)) usage_label(); if (parse_uuid(optarg, &type) != 0) usage_label(); break; default: usage_label(); } } if (!all ^ (block > 0 || entry > 0 || size > 0 || !uuid_is_nil(&type, NULL))) usage_label(); if (name == NULL || argc == optind) usage_label(); while (optind < argc) { fd = gpt_open(argv[optind++]); if (fd == -1) { warn("unable to open device '%s'", device_name); continue; } label(fd); gpt_close(fd); } return (0); }