show.c revision 1.44 
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 1.44 2019/03/26 11:23:55 martin Exp $");
37#endif
38
39#include <sys/bootblock.h>
40#include <sys/types.h>
41
42#include <err.h>
43#include <stddef.h>
44#include <stdio.h>
45#include <stdlib.h>
46#include <string.h>
47#include <unistd.h>
48
49
50#include "map.h"
51#include "gpt.h"
52#include "gpt_private.h"
53
54static int cmd_show(gpt_t, int, char *[]);
55
56static const char *showhelp[] = {
57	"[-aglu] [-i index]",
58};
59
60#define SHOW_UUID  1
61#define SHOW_GUID  2
62#define SHOW_LABEL 4
63#define SHOW_ALL   8
64
65struct gpt_cmd c_show = {
66	"show",
67	cmd_show,
68	showhelp, __arraycount(showhelp),
69	GPT_READONLY,
70};
71
72#define usage() gpt_usage(NULL, &c_show)
73
74static void
75print_part_type(int map_type, int flags, void *map_data, off_t map_start)
76{
77	off_t start;
78	map_t p;
79	struct mbr *mbr;
80	struct gpt_ent *ent;
81	unsigned int i;
82	char buf[128], *b = buf;
83	uint8_t utfbuf[__arraycount(ent->ent_name) * 3 + 1];
84
85	switch (map_type) {
86	case MAP_TYPE_UNUSED:
87		printf("Unused");
88		break;
89	case MAP_TYPE_MBR:
90		if (map_start != 0)
91			printf("Extended ");
92		printf("MBR");
93		break;
94	case MAP_TYPE_PRI_GPT_HDR:
95		printf("Pri GPT header");
96		break;
97	case MAP_TYPE_SEC_GPT_HDR:
98		printf("Sec GPT header");
99		break;
100	case MAP_TYPE_PRI_GPT_TBL:
101		printf("Pri GPT table");
102		break;
103	case MAP_TYPE_SEC_GPT_TBL:
104		printf("Sec GPT table");
105		break;
106	case MAP_TYPE_MBR_PART:
107		p = map_data;
108		if (p->map_start != 0)
109			printf("Extended ");
110		printf("MBR part ");
111		mbr = p->map_data;
112		for (i = 0; i < 4; i++) {
113			start = le16toh(mbr->mbr_part[i].part_start_hi);
114			start = (start << 16) +
115			    le16toh(mbr->mbr_part[i].part_start_lo);
116			if (map_start == p->map_start + start)
117				break;
118		}
119		if (i == 4) {
120			/* wasn't there */
121			printf("[partition not found?]");
122		} else {
123			printf("%d%s", mbr->mbr_part[i].part_typ,
124			    mbr->mbr_part[i].part_flag == 0x80 ?
125			    " (active)" : "");
126		}
127		break;
128	case MAP_TYPE_GPT_PART:
129		printf("GPT part ");
130		ent = map_data;
131		if (flags & SHOW_LABEL) {
132			utf16_to_utf8(ent->ent_name,
133			    __arraycount(ent->ent_name), utfbuf,
134			    __arraycount(utfbuf));
135			b = (char *)utfbuf;
136		} else if (flags & SHOW_GUID) {
137			gpt_uuid_snprintf( buf, sizeof(buf), "%d",
138			    ent->ent_guid);
139		} else if (flags & SHOW_UUID) {
140			gpt_uuid_snprintf(buf, sizeof(buf),
141			    "%d", ent->ent_type);
142		} else {
143			gpt_uuid_snprintf(buf, sizeof(buf), "%ls",
144			    ent->ent_type);
145		}
146		printf("- %s", b);
147		break;
148	case MAP_TYPE_PMBR:
149		printf("PMBR");
150		mbr = map_data;
151		if (mbr->mbr_part[0].part_typ == MBR_PTYPE_PMBR &&
152		    mbr->mbr_part[0].part_flag == 0x80)
153			    printf(" (active)");
154		break;
155	default:
156		printf("Unknown %#x", map_type);
157		break;
158	}
159}
160
161static int
162show(gpt_t gpt, int xshow)
163{
164	map_t m;
165
166	printf("  %*s", gpt->lbawidth, "start");
167	printf("  %*s", gpt->lbawidth, "size");
168	printf("  index  contents\n");
169
170	m = map_first(gpt);
171	while (m != NULL) {
172		printf("  %*llu", gpt->lbawidth, (long long)m->map_start);
173		printf("  %*llu", gpt->lbawidth, (long long)m->map_size);
174		putchar(' ');
175		putchar(' ');
176		if (m->map_index > 0)
177			printf("%5d", m->map_index);
178		else
179			printf("     ");
180		putchar(' ');
181		putchar(' ');
182		print_part_type(m->map_type, xshow, m->map_data, m->map_start);
183		putchar('\n');
184		m = m->map_next;
185	}
186	return 0;
187}
188
189static void
190gpt_show_sec_num(const char *prompt, int64_t secsize, off_t num)
191{
192#ifdef HN_AUTOSCALE
193	char human_num[5];
194	if (humanize_number(human_num, sizeof(human_num),
195	    (int64_t)num*secsize,
196	    "", HN_AUTOSCALE, HN_NOSPACE|HN_B) < 0)
197		human_num[0] = '\0';
198#endif
199	printf("%s: %" PRIu64, prompt, (uint64_t)num);
200#ifdef HN_AUTOSCALE
201	if (human_num[0] != '\0')
202		printf(" (%s)", human_num);
203#endif
204	printf("\n");
205}
206
207static int
208show_one(gpt_t gpt, unsigned int entry)
209{
210	map_t m;
211	struct gpt_ent *ent;
212	char s1[128], s2[128];
213	uint8_t utfbuf[__arraycount(ent->ent_name) * 3 + 1];
214
215	for (m = map_first(gpt); m != NULL; m = m->map_next)
216		if (entry == m->map_index)
217			break;
218	if (m == NULL) {
219		gpt_warnx(gpt, "Could not find index %d", entry);
220		return -1;
221	}
222	ent = m->map_data;
223
224	printf("Details for index %d:\n", entry);
225	gpt_show_sec_num("Start", gpt->secsz, m->map_start);
226	gpt_show_sec_num("Size", gpt->secsz, m->map_size);
227
228	gpt_uuid_snprintf(s1, sizeof(s1), "%s", ent->ent_type);
229	gpt_uuid_snprintf(s2, sizeof(s2), "%d", ent->ent_type);
230	if (strcmp(s1, s2) == 0)
231		strlcpy(s1, "unknown", sizeof(s1));
232	printf("Type: %s (%s)\n", s1, s2);
233
234	gpt_uuid_snprintf(s2, sizeof(s1), "%d", ent->ent_guid);
235	printf("GUID: %s\n", s2);
236
237	utf16_to_utf8(ent->ent_name, __arraycount(ent->ent_name), utfbuf,
238	    __arraycount(utfbuf));
239	printf("Label: %s\n", (char *)utfbuf);
240
241	printf("Attributes: ");
242	if (ent->ent_attr == 0) {
243		printf("None\n");
244	} else  {
245		char buf[1024];
246		printf("%s\n", gpt_attr_list(buf, sizeof(buf), ent->ent_attr));
247	}
248
249	return 0;
250}
251
252static int
253show_all(gpt_t gpt)
254{
255	map_t m;
256	struct gpt_ent *ent;
257	char s1[128], s2[128];
258#ifdef HN_AUTOSCALE
259	char human_num[8];
260#endif
261	uint8_t utfbuf[__arraycount(ent->ent_name) * 3 + 1];
262#define PFX "                                 "
263
264	printf("  %*s", gpt->lbawidth, "start");
265	printf("  %*s", gpt->lbawidth, "size");
266	printf("  index  contents\n");
267
268	m = map_first(gpt);
269	while (m != NULL) {
270		printf("  %*llu", gpt->lbawidth, (long long)m->map_start);
271		printf("  %*llu", gpt->lbawidth, (long long)m->map_size);
272		putchar(' ');
273		putchar(' ');
274		if (m->map_index > 0) {
275			printf("%5d  ", m->map_index);
276			print_part_type(m->map_type, 0, m->map_data,
277			    m->map_start);
278			putchar('\n');
279
280			ent = m->map_data;
281
282			gpt_uuid_snprintf(s1, sizeof(s1), "%s", ent->ent_type);
283			gpt_uuid_snprintf(s2, sizeof(s2), "%d", ent->ent_type);
284			if (strcmp(s1, s2) == 0)
285				strlcpy(s1, "unknown", sizeof(s1));
286			printf(PFX "Type: %s\n", s1);
287			printf(PFX "TypeID: %s\n", s2);
288
289			gpt_uuid_snprintf(s2, sizeof(s1), "%d", ent->ent_guid);
290			printf(PFX "GUID: %s\n", s2);
291
292			printf(PFX "Size: ");
293#ifdef HN_AUTOSCALE
294			if (humanize_number(human_num, sizeof(human_num),
295			    (int64_t)(m->map_size * gpt->secsz),
296			    "", HN_AUTOSCALE, HN_B) < 0) {
297#endif
298				printf("%ju",
299				    (int64_t)(m->map_size * gpt->secsz));
300#ifdef HN_AUTOSCALE
301			} else {
302				printf("%s", human_num);
303			}
304#endif
305			putchar('\n');
306
307			utf16_to_utf8(ent->ent_name,
308			    __arraycount(ent->ent_name), utfbuf,
309			    __arraycount(utfbuf));
310			printf(PFX "Label: %s\n", (char *)utfbuf);
311
312			printf(PFX "Attributes: ");
313			if (ent->ent_attr == 0) {
314				printf("None\n");
315			} else  {
316				char buf[1024];
317
318				printf("%s\n", gpt_attr_list(buf, sizeof(buf),
319				    ent->ent_attr));
320			}
321		} else {
322			printf("       ");
323			print_part_type(m->map_type, 0, m->map_data,
324			    m->map_start);
325			putchar('\n');
326		}
327		m = m->map_next;
328	}
329	return 0;
330}
331
332static int
333cmd_show(gpt_t gpt, int argc, char *argv[])
334{
335	int ch;
336	int xshow = 0;
337	unsigned int entry = 0;
338	off_t start = 0;
339	map_t m;
340
341	while ((ch = getopt(argc, argv, "gi:b:lua")) != -1) {
342		switch(ch) {
343		case 'a':
344			xshow |= SHOW_ALL;
345			break;
346		case 'g':
347			xshow |= SHOW_GUID;
348			break;
349		case 'i':
350			if (gpt_uint_get(gpt, &entry) == -1)
351				return usage();
352			break;
353		case 'b':
354			if (gpt_human_get(gpt, &start) == -1)
355				return usage();
356			break;
357		case 'l':
358			xshow |= SHOW_LABEL;
359			break;
360		case 'u':
361			xshow |= SHOW_UUID;
362			break;
363		default:
364			return usage();
365		}
366	}
367
368	if (argc != optind)
369		return usage();
370
371	if (map_find(gpt, MAP_TYPE_PRI_GPT_HDR) == NULL)
372		printf("GPT not found, displaying data from MBR.\n\n");
373
374	if (xshow & SHOW_ALL)
375		return show_all(gpt);
376
377	if (start > 0) {
378		for (m = map_first(gpt); m != NULL; m = m->map_next) {
379			if (m->map_type != MAP_TYPE_GPT_PART ||
380			    m->map_index < 1)
381				continue;
382			if (start != m->map_start)
383				continue;
384			entry = m->map_index;
385			break;
386		}
387	}
388
389	return entry > 0 ? show_one(gpt, entry) : show(gpt, xshow);
390}
391