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1.1 christos 1: /*-
2: * Copyright (c) 2005 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>
1.2 christos 28: #ifdef __FBSDID
1.1 christos 29: __FBSDID("$FreeBSD: src/sbin/gpt/label.c,v 1.3 2006/10/04 18:20:25 marcel Exp $");
1.2 christos 30: #endif
31: #ifdef __RCSID
1.3 ! christos 32: __RCSID("$NetBSD: label.c,v 1.2 2006/10/15 22:36:29 christos Exp $");
1.2 christos 33: #endif
1.1 christos 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:
44: #include "map.h"
45: #include "gpt.h"
46:
47: static int all;
48: static uuid_t type;
49: static off_t block, size;
50: static unsigned int entry;
51: static uint8_t *name;
52:
53: static void
54: usage_label(void)
55: {
56: const char *common = "<-l label | -f file> device ...";
57:
58: fprintf(stderr,
59: "usage: %s -a %s\n"
60: " %s [-b lba] [-i index] [-s lba] [-t uuid] %s\n",
61: getprogname(), common, getprogname(), common);
62: exit(1);
63: }
64:
65: static void
66: label(int fd)
67: {
68: uuid_t uuid;
69: map_t *gpt, *tpg;
70: map_t *tbl, *lbt;
71: map_t *m;
72: struct gpt_hdr *hdr;
73: struct gpt_ent *ent;
74: unsigned int i;
75:
76: gpt = map_find(MAP_TYPE_PRI_GPT_HDR);
77: if (gpt == NULL) {
78: warnx("%s: error: no primary GPT header; run create or recover",
79: device_name);
80: return;
81: }
82:
83: tpg = map_find(MAP_TYPE_SEC_GPT_HDR);
84: if (tpg == NULL) {
85: warnx("%s: error: no secondary GPT header; run recover",
86: device_name);
87: return;
88: }
89:
90: tbl = map_find(MAP_TYPE_PRI_GPT_TBL);
91: lbt = map_find(MAP_TYPE_SEC_GPT_TBL);
92: if (tbl == NULL || lbt == NULL) {
93: warnx("%s: error: run recover -- trust me", device_name);
94: return;
95: }
96:
97: /* Relabel all matching entries in the map. */
98: for (m = map_first(); m != NULL; m = m->map_next) {
99: if (m->map_type != MAP_TYPE_GPT_PART || m->map_index < 1)
100: continue;
101: if (entry > 0 && entry != m->map_index)
102: continue;
103: if (block > 0 && block != m->map_start)
104: continue;
105: if (size > 0 && size != m->map_size)
106: continue;
107:
108: i = m->map_index - 1;
109:
110: hdr = gpt->map_data;
111: ent = (void*)((char*)tbl->map_data + i *
112: le32toh(hdr->hdr_entsz));
113: le_uuid_dec(&ent->ent_type, &uuid);
114: if (!uuid_is_nil(&type, NULL) &&
115: !uuid_equal(&type, &uuid, NULL))
116: continue;
117:
118: /* Label the primary entry. */
119: utf8_to_utf16(name, ent->ent_name, 36);
120:
121: hdr->hdr_crc_table = htole32(crc32(tbl->map_data,
122: le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz)));
123: hdr->hdr_crc_self = 0;
124: hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size)));
125:
126: gpt_write(fd, gpt);
127: gpt_write(fd, tbl);
128:
129: hdr = tpg->map_data;
130: ent = (void*)((char*)lbt->map_data + i *
131: le32toh(hdr->hdr_entsz));
132:
133: /* Label the secundary entry. */
134: utf8_to_utf16(name, ent->ent_name, 36);
135:
136: hdr->hdr_crc_table = htole32(crc32(lbt->map_data,
137: le32toh(hdr->hdr_entries) * le32toh(hdr->hdr_entsz)));
138: hdr->hdr_crc_self = 0;
139: hdr->hdr_crc_self = htole32(crc32(hdr, le32toh(hdr->hdr_size)));
140:
141: gpt_write(fd, lbt);
142: gpt_write(fd, tpg);
143:
1.2 christos 144: #ifdef __FreeBSD__
1.1 christos 145: printf("%sp%u labeled\n", device_name, m->map_index);
1.2 christos 146: #endif
147: #ifdef __NetBSD__
148: printf("parition %d on %s labeled %s\n", m->map_index,
149: device_name, name);
150: #endif
1.1 christos 151: }
152: }
153:
154: static void
155: name_from_file(const char *fn)
156: {
157: FILE *f;
158: char *p;
159: size_t maxlen = 1024;
160: size_t len;
161:
162: if (strcmp(fn, "-") != 0) {
163: f = fopen(fn, "r");
164: if (f == NULL)
165: err(1, "unable to open file %s", fn);
166: } else
167: f = stdin;
168: name = malloc(maxlen);
169: len = fread(name, 1, maxlen - 1, f);
170: if (ferror(f))
171: err(1, "unable to read label from file %s", fn);
172: if (f != stdin)
173: fclose(f);
174: name[len] = '\0';
175: /* Only keep the first line, excluding the newline character. */
1.3 ! christos 176: p = strchr((const char *)name, '\n');
1.1 christos 177: if (p != NULL)
178: *p = '\0';
179: }
180:
181: int
182: cmd_label(int argc, char *argv[])
183: {
184: char *p;
185: int ch, fd;
186:
187: /* Get the label options */
188: while ((ch = getopt(argc, argv, "ab:f:i:l:s:t:")) != -1) {
189: switch(ch) {
190: case 'a':
191: if (all > 0)
192: usage_label();
193: all = 1;
194: break;
195: case 'b':
196: if (block > 0)
197: usage_label();
198: block = strtoll(optarg, &p, 10);
199: if (*p != 0 || block < 1)
200: usage_label();
201: break;
202: case 'f':
203: if (name != NULL)
204: usage_label();
205: name_from_file(optarg);
206: break;
207: case 'i':
208: if (entry > 0)
209: usage_label();
210: entry = strtol(optarg, &p, 10);
211: if (*p != 0 || entry < 1)
212: usage_label();
213: break;
214: case 'l':
215: if (name != NULL)
216: usage_label();
1.3 ! christos 217: name = (uint8_t *)strdup(optarg);
1.1 christos 218: break;
219: case 's':
220: if (size > 0)
221: usage_label();
222: size = strtoll(optarg, &p, 10);
223: if (*p != 0 || size < 1)
224: usage_label();
225: break;
226: case 't':
227: if (!uuid_is_nil(&type, NULL))
228: usage_label();
229: if (parse_uuid(optarg, &type) != 0)
230: usage_label();
231: break;
232: default:
233: usage_label();
234: }
235: }
236:
237: if (!all ^
238: (block > 0 || entry > 0 || size > 0 || !uuid_is_nil(&type, NULL)))
239: usage_label();
240:
241: if (name == NULL || argc == optind)
242: usage_label();
243:
244: while (optind < argc) {
245: fd = gpt_open(argv[optind++]);
246: if (fd == -1) {
247: warn("unable to open device '%s'", device_name);
248: continue;
249: }
250:
251: label(fd);
252:
253: gpt_close(fd);
254: }
255:
256: return (0);
257: }