show.c revision 1.18 
1/*-
2 * Copyright (c) 2002 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#if HAVE_NBTOOL_CONFIG_H
28#include "nbtool_config.h"
29#endif
30
31#include <sys/cdefs.h>
32#ifdef __FBSDID
33__FBSDID("$FreeBSD: src/sbin/gpt/show.c,v 1.14 2006/06/22 22:22:32 marcel Exp $");
34#endif
35#ifdef __RCSID
36__RCSID("$NetBSD: show.c,v 1.18 2014/09/30 02:12:55 christos Exp $");
37#endif
38
39#include <sys/types.h>
40
41#include <err.h>
42#include <stddef.h>
43#include <stdio.h>
44#include <stdlib.h>
45#include <string.h>
46#include <unistd.h>
47
48#include "map.h"
49#include "gpt.h"
50
51static int show_label = 0;
52static int show_uuid = 0;
53static int show_guid = 0;
54static unsigned int entry = 0;
55
56const char showmsg[] = "show [-glu] [-i index] device ...";
57
58__dead static void
59usage_show(void)
60{
61
62	fprintf(stderr,
63	    "usage: %s %s\n", getprogname(), showmsg);
64	exit(1);
65}
66
67static const char *
68friendly(uuid_t *t)
69{
70	static const uuid_t efi_slice = GPT_ENT_TYPE_EFI;
71	static const uuid_t bios_boot = GPT_ENT_TYPE_BIOS;
72	static const uuid_t msdata = GPT_ENT_TYPE_MS_BASIC_DATA;
73	static const uuid_t freebsd = GPT_ENT_TYPE_FREEBSD;
74	static const uuid_t hfs = GPT_ENT_TYPE_APPLE_HFS;
75	static const uuid_t linuxdata = GPT_ENT_TYPE_LINUX_DATA;
76	static const uuid_t linuxswap = GPT_ENT_TYPE_LINUX_SWAP;
77	static const uuid_t msr = GPT_ENT_TYPE_MS_RESERVED;
78	static const uuid_t swap = GPT_ENT_TYPE_FREEBSD_SWAP;
79	static const uuid_t ufs = GPT_ENT_TYPE_FREEBSD_UFS;
80	static const uuid_t vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
81	static const uuid_t zfs = GPT_ENT_TYPE_FREEBSD_ZFS;
82	static const uuid_t nb_swap = GPT_ENT_TYPE_NETBSD_SWAP;
83	static const uuid_t nb_ffs = GPT_ENT_TYPE_NETBSD_FFS;
84	static const uuid_t nb_lfs = GPT_ENT_TYPE_NETBSD_LFS;
85	static const uuid_t nb_raid = GPT_ENT_TYPE_NETBSD_RAIDFRAME;
86	static const uuid_t nb_ccd = GPT_ENT_TYPE_NETBSD_CCD;
87	static const uuid_t nb_cgd = GPT_ENT_TYPE_NETBSD_CGD;
88	static char buf[80];
89	char *s;
90
91	if (show_uuid)
92		goto unfriendly;
93
94	if (uuid_equal(t, &efi_slice, NULL))
95		return ("EFI System");
96	if (uuid_equal(t, &bios_boot, NULL))
97		return ("BIOS Boot");
98	if (uuid_equal(t, &nb_swap, NULL))
99		return ("NetBSD swap");
100	if (uuid_equal(t, &nb_ffs, NULL))
101		return ("NetBSD FFSv1/FFSv2");
102	if (uuid_equal(t, &nb_lfs, NULL))
103		return ("NetBSD LFS");
104	if (uuid_equal(t, &nb_raid, NULL))
105		return ("NetBSD RAIDFrame component");
106	if (uuid_equal(t, &nb_ccd, NULL))
107		return ("NetBSD ccd component");
108	if (uuid_equal(t, &nb_cgd, NULL))
109		return ("NetBSD Cryptographic Disk");
110	if (uuid_equal(t, &swap, NULL))
111		return ("FreeBSD swap");
112	if (uuid_equal(t, &ufs, NULL))
113		return ("FreeBSD UFS/UFS2");
114	if (uuid_equal(t, &vinum, NULL))
115		return ("FreeBSD vinum");
116	if (uuid_equal(t, &zfs, NULL))
117		return ("FreeBSD ZFS");
118	if (uuid_equal(t, &freebsd, NULL))
119		return ("FreeBSD legacy");
120	if (uuid_equal(t, &msdata, NULL))
121		return ("Windows basic data");
122	if (uuid_equal(t, &msr, NULL))
123		return ("Windows reserved");
124	if (uuid_equal(t, &linuxdata, NULL))
125		return ("Linux data");
126	if (uuid_equal(t, &linuxswap, NULL))
127		return ("Linux swap");
128	if (uuid_equal(t, &hfs, NULL))
129		return ("Apple HFS");
130
131unfriendly:
132	uuid_to_string(t, &s, NULL);
133	strlcpy(buf, s, sizeof buf);
134	free(s);
135	return (buf);
136}
137
138static void
139show(void)
140{
141	uuid_t guid, type;
142	off_t start;
143	map_t *m, *p;
144	struct mbr *mbr;
145	struct gpt_ent *ent;
146	unsigned int i;
147	char *s;
148
149	printf("  %*s", lbawidth, "start");
150	printf("  %*s", lbawidth, "size");
151	printf("  index  contents\n");
152
153	m = map_first();
154	while (m != NULL) {
155		printf("  %*llu", lbawidth, (long long)m->map_start);
156		printf("  %*llu", lbawidth, (long long)m->map_size);
157		putchar(' ');
158		putchar(' ');
159		if (m->map_index > 0)
160			printf("%5d", m->map_index);
161		else
162			printf("     ");
163		putchar(' ');
164		putchar(' ');
165		switch (m->map_type) {
166		case MAP_TYPE_MBR:
167			if (m->map_start != 0)
168				printf("Extended ");
169			printf("MBR");
170			break;
171		case MAP_TYPE_PRI_GPT_HDR:
172			printf("Pri GPT header");
173			break;
174		case MAP_TYPE_SEC_GPT_HDR:
175			printf("Sec GPT header");
176			break;
177		case MAP_TYPE_PRI_GPT_TBL:
178			printf("Pri GPT table");
179			break;
180		case MAP_TYPE_SEC_GPT_TBL:
181			printf("Sec GPT table");
182			break;
183		case MAP_TYPE_MBR_PART:
184			p = m->map_data;
185			if (p->map_start != 0)
186				printf("Extended ");
187			printf("MBR part ");
188			mbr = p->map_data;
189			for (i = 0; i < 4; i++) {
190				start = le16toh(mbr->mbr_part[i].part_start_hi);
191				start = (start << 16) +
192				    le16toh(mbr->mbr_part[i].part_start_lo);
193				if (m->map_start == p->map_start + start)
194					break;
195			}
196			printf("%d", mbr->mbr_part[i].part_typ);
197			break;
198		case MAP_TYPE_GPT_PART:
199			printf("GPT part ");
200			ent = m->map_data;
201			if (show_label) {
202				printf("- \"%s\"",
203				    utf16_to_utf8(ent->ent_name));
204			} else if (show_guid) {
205				uuid_dec_le(ent->ent_guid, &guid);
206				uuid_to_string(&guid, &s, NULL);
207				printf("- %s", s);
208				free(s);
209			} else {
210				uuid_dec_le(ent->ent_type, &type);
211				printf("- %s", friendly(&type));
212			}
213			break;
214		case MAP_TYPE_PMBR:
215			printf("PMBR");
216			break;
217		}
218		putchar('\n');
219		m = m->map_next;
220	}
221}
222
223static void
224show_one(void)
225{
226	uuid_t guid, type;
227	map_t *m;
228	struct gpt_ent *ent;
229	const char *s1;
230	char *s2;
231#ifdef HN_AUTOSCALE
232	char human_num[5];
233#endif
234
235	for (m = map_first(); m != NULL; m = m->map_next)
236		if (entry == m->map_index)
237			break;
238	if (m == NULL) {
239		warnx("%s: error: could not find index %d",
240		    device_name, entry);
241		return;
242	}
243	ent = m->map_data;
244
245	printf("Details for index %d:\n", entry);
246#ifdef HN_AUTOSCALE
247	if (humanize_number(human_num, 5, (int64_t)(m->map_start * secsz),
248	    "", HN_AUTOSCALE, HN_NOSPACE|HN_B) < 0)
249		human_num[0] = '\0';
250	if (human_num[0] != '\0')
251		printf("Start: %llu (%s)\n", (long long)m->map_start,
252		    human_num);
253	else
254#endif
255		printf("Start: %llu\n", (long long)m->map_start);
256#ifdef HN_AUTOSCALE
257	if (humanize_number(human_num, 5, (int64_t)(m->map_size * secsz),
258	    "", HN_AUTOSCALE, HN_NOSPACE|HN_B) < 0)
259		human_num[0] = '\0';
260	if (human_num[0] != '\0')
261		printf("Size: %llu (%s)\n", (long long)m->map_size, human_num);
262	else
263#endif
264		printf("Size: %llu\n", (long long)m->map_size);
265
266	uuid_dec_le(ent->ent_type, &type);
267	s1 = friendly(&type);
268	uuid_to_string(&type, &s2, NULL);
269	if (strcmp(s1, s2) == 0)
270		s1 = "unknown";
271	printf("Type: %s (%s)\n", s1, s2);
272	free(s2);
273
274	uuid_dec_le(ent->ent_guid, &guid);
275	uuid_to_string(&guid, &s2, NULL);
276	printf("GUID: %s\n", s2);
277	free(s2);
278
279	printf("Label: %s\n", utf16_to_utf8(ent->ent_name));
280
281	printf("Attributes:\n");
282	if (ent->ent_attr == 0)
283		printf("  None\n");
284	else {
285		if (ent->ent_attr & GPT_ENT_ATTR_REQUIRED_PARTITION)
286			printf("  required for platform to function\n");
287		if (ent->ent_attr & GPT_ENT_ATTR_NO_BLOCK_IO_PROTOCOL)
288			printf("  UEFI won't recognize file system\n");
289		if (ent->ent_attr & GPT_ENT_ATTR_LEGACY_BIOS_BOOTABLE)
290			printf("  legacy BIOS boot partition\n");
291		if (ent->ent_attr & GPT_ENT_ATTR_BOOTME)
292			printf("  indicates a bootable partition\n");
293		if (ent->ent_attr & GPT_ENT_ATTR_BOOTONCE)
294			printf("  attempt to boot this partition only once\n");
295		if (ent->ent_attr & GPT_ENT_ATTR_BOOTFAILED)
296			printf("  partition that was marked bootonce but failed to boot\n");
297	}
298}
299
300int
301cmd_show(int argc, char *argv[])
302{
303	char *p;
304	int ch, fd;
305
306	while ((ch = getopt(argc, argv, "gi:lu")) != -1) {
307		switch(ch) {
308		case 'g':
309			show_guid = 1;
310			break;
311		case 'i':
312			if (entry > 0)
313				usage_show();
314			entry = strtoul(optarg, &p, 10);
315			if (*p != 0 || entry < 1)
316				usage_show();
317			break;
318		case 'l':
319			show_label = 1;
320			break;
321		case 'u':
322			show_uuid = 1;
323			break;
324		default:
325			usage_show();
326		}
327	}
328
329	if (argc == optind)
330		usage_show();
331
332	while (optind < argc) {
333		fd = gpt_open(argv[optind++]);
334		if (fd == -1) {
335			warn("unable to open device '%s'", device_name);
336			continue;
337		}
338
339		if (entry > 0)
340			show_one();
341		else
342			show();
343
344		gpt_close(fd);
345	}
346
347	return (0);
348}
349