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show.c revision 1.40 
      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 1.40 2017/09/06 18:17:18 christos 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 
     54 static int cmd_show(gpt_t, int, char *[]);
     55 
     56 static 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 
     65 struct 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 
     74 static void
     75 print_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, sizeof(ent->ent_name),
    133 			    utfbuf, sizeof(utfbuf));
    134 			b = (char *)utfbuf;
    135 		} else if (flags & SHOW_GUID) {
    136 			gpt_uuid_snprintf( buf, sizeof(buf), "%d",
    137 			    ent->ent_guid);
    138 		} else if (flags & SHOW_UUID) {
    139 			gpt_uuid_snprintf(buf, sizeof(buf),
    140 			    "%d", ent->ent_type);
    141 		} else {
    142 			gpt_uuid_snprintf(buf, sizeof(buf), "%ls",
    143 			    ent->ent_type);
    144 		}
    145 		printf("- %s", b);
    146 		break;
    147 	case MAP_TYPE_PMBR:
    148 		printf("PMBR");
    149 		mbr = map_data;
    150 		if (mbr->mbr_part[0].part_typ == MBR_PTYPE_PMBR &&
    151 		    mbr->mbr_part[0].part_flag == 0x80)
    152 			    printf(" (active)");
    153 		break;
    154 	default:
    155 		printf("Unknown %#x", map_type);
    156 		break;
    157 	}
    158 }
    159 
    160 static int
    161 show(gpt_t gpt, int xshow)
    162 {
    163 	map_t m;
    164 
    165 	printf("  %*s", gpt->lbawidth, "start");
    166 	printf("  %*s", gpt->lbawidth, "size");
    167 	printf("  index  contents\n");
    168 
    169 	m = map_first(gpt);
    170 	while (m != NULL) {
    171 		printf("  %*llu", gpt->lbawidth, (long long)m->map_start);
    172 		printf("  %*llu", gpt->lbawidth, (long long)m->map_size);
    173 		putchar(' ');
    174 		putchar(' ');
    175 		if (m->map_index > 0)
    176 			printf("%5d", m->map_index);
    177 		else
    178 			printf("     ");
    179 		putchar(' ');
    180 		putchar(' ');
    181 		print_part_type(m->map_type, xshow, m->map_data, m->map_start);
    182 		putchar('\n');
    183 		m = m->map_next;
    184 	}
    185 	return 0;
    186 }
    187 
    188 static int
    189 show_one(gpt_t gpt, unsigned int entry)
    190 {
    191 	map_t m;
    192 	struct gpt_ent *ent;
    193 	char s1[128], s2[128];
    194 	uint8_t utfbuf[__arraycount(ent->ent_name) * 3 + 1];
    195 
    196 	for (m = map_first(gpt); m != NULL; m = m->map_next)
    197 		if (entry == m->map_index)
    198 			break;
    199 	if (m == NULL) {
    200 		gpt_warnx(gpt, "Could not find index %d", entry);
    201 		return -1;
    202 	}
    203 	ent = m->map_data;
    204 
    205 	printf("Details for index %d:\n", entry);
    206 	gpt_show_num("Start", (uintmax_t)(m->map_start * gpt->secsz));
    207 	gpt_show_num("Size", (uintmax_t)(m->map_size * gpt->secsz));
    208 
    209 	gpt_uuid_snprintf(s1, sizeof(s1), "%s", ent->ent_type);
    210 	gpt_uuid_snprintf(s2, sizeof(s2), "%d", ent->ent_type);
    211 	if (strcmp(s1, s2) == 0)
    212 		strlcpy(s1, "unknown", sizeof(s1));
    213 	printf("Type: %s (%s)\n", s1, s2);
    214 
    215 	gpt_uuid_snprintf(s2, sizeof(s1), "%d", ent->ent_guid);
    216 	printf("GUID: %s\n", s2);
    217 
    218 	utf16_to_utf8(ent->ent_name, sizeof(ent->ent_name), utfbuf,
    219 	    sizeof(utfbuf));
    220 	printf("Label: %s\n", (char *)utfbuf);
    221 
    222 	printf("Attributes: ");
    223 	if (ent->ent_attr == 0) {
    224 		printf("None\n");
    225 	} else  {
    226 		char buf[1024];
    227 		printf("%s\n", gpt_attr_list(buf, sizeof(buf), ent->ent_attr));
    228 	}
    229 
    230 	return 0;
    231 }
    232 
    233 static int
    234 show_all(gpt_t gpt)
    235 {
    236 	map_t m;
    237 	struct gpt_ent *ent;
    238 	char s1[128], s2[128];
    239 #ifdef HN_AUTOSCALE
    240 	char human_num[8];
    241 #endif
    242 	uint8_t utfbuf[__arraycount(ent->ent_name) * 3 + 1];
    243 #define PFX "                                 "
    244 
    245 	printf("  %*s", gpt->lbawidth, "start");
    246 	printf("  %*s", gpt->lbawidth, "size");
    247 	printf("  index  contents\n");
    248 
    249 	m = map_first(gpt);
    250 	while (m != NULL) {
    251 		printf("  %*llu", gpt->lbawidth, (long long)m->map_start);
    252 		printf("  %*llu", gpt->lbawidth, (long long)m->map_size);
    253 		putchar(' ');
    254 		putchar(' ');
    255 		if (m->map_index > 0) {
    256 			printf("%5d  ", m->map_index);
    257 			print_part_type(m->map_type, 0, m->map_data,
    258 			    m->map_start);
    259 			putchar('\n');
    260 
    261 			ent = m->map_data;
    262 
    263 			gpt_uuid_snprintf(s1, sizeof(s1), "%s", ent->ent_type);
    264 			gpt_uuid_snprintf(s2, sizeof(s2), "%d", ent->ent_type);
    265 			if (strcmp(s1, s2) == 0)
    266 				strlcpy(s1, "unknown", sizeof(s1));
    267 			printf(PFX "Type: %s\n", s1);
    268 			printf(PFX "TypeID: %s\n", s2);
    269 
    270 			gpt_uuid_snprintf(s2, sizeof(s1), "%d", ent->ent_guid);
    271 			printf(PFX "GUID: %s\n", s2);
    272 
    273 			printf(PFX "Size: ");
    274 #ifdef HN_AUTOSCALE
    275 			if (humanize_number(human_num, sizeof(human_num),
    276 			    (int64_t)(m->map_size * gpt->secsz),
    277 			    "", HN_AUTOSCALE, HN_B) < 0) {
    278 #endif
    279 				printf("%ju",
    280 				    (int64_t)(m->map_size * gpt->secsz));
    281 #ifdef HN_AUTOSCALE
    282 			} else {
    283 				printf("%s", human_num);
    284 			}
    285 #endif
    286 			putchar('\n');
    287 
    288 			utf16_to_utf8(ent->ent_name, sizeof(ent->ent_name),
    289 			    utfbuf, sizeof(utfbuf));
    290 			printf(PFX "Label: %s\n", (char *)utfbuf);
    291 
    292 			printf(PFX "Attributes: ");
    293 			if (ent->ent_attr == 0) {
    294 				printf("None\n");
    295 			} else  {
    296 				char buf[1024];
    297 
    298 				printf("%s\n", gpt_attr_list(buf, sizeof(buf),
    299 				    ent->ent_attr));
    300 			}
    301 		} else {
    302 			printf("       ");
    303 			print_part_type(m->map_type, 0, m->map_data,
    304 			    m->map_start);
    305 			putchar('\n');
    306 		}
    307 		m = m->map_next;
    308 	}
    309 	return 0;
    310 }
    311 
    312 static int
    313 cmd_show(gpt_t gpt, int argc, char *argv[])
    314 {
    315 	int ch;
    316 	int xshow = 0;
    317 	unsigned int entry = 0;
    318 
    319 	while ((ch = getopt(argc, argv, "gi:lua")) != -1) {
    320 		switch(ch) {
    321 		case 'a':
    322 			xshow |= SHOW_ALL;
    323 			break;
    324 		case 'g':
    325 			xshow |= SHOW_GUID;
    326 			break;
    327 		case 'i':
    328 			if (gpt_uint_get(gpt, &entry) == -1)
    329 				return usage();
    330 			break;
    331 		case 'l':
    332 			xshow |= SHOW_LABEL;
    333 			break;
    334 		case 'u':
    335 			xshow |= SHOW_UUID;
    336 			break;
    337 		default:
    338 			return usage();
    339 		}
    340 	}
    341 
    342 	if (argc != optind)
    343 		return usage();
    344 
    345 	if (xshow & SHOW_ALL)
    346 		return show_all(gpt);
    347 
    348 	return entry > 0 ? show_one(gpt, entry) : show(gpt, xshow);
    349 }
    350