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show.c revision 1.2.10.2
      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 #include <sys/cdefs.h>
     28 #ifdef __FBSDID
     29 __FBSDID("$FreeBSD: src/sbin/gpt/show.c,v 1.14 2006/06/22 22:22:32 marcel Exp $");
     30 #endif
     31 #ifdef __RCSID
     32 __RCSID("$NetBSD: show.c,v 1.2.10.2 2008/02/18 21:04:17 mjf Exp $");
     33 #endif
     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 show_label = 0;
     48 static int show_uuid = 0;
     49 
     50 const char showmsg[] = "show [-lu] device ...";
     51 
     52 static void
     53 usage_show(void)
     54 {
     55 
     56 	fprintf(stderr,
     57 	    "usage: %s %s\n", getprogname(), showmsg);
     58 	exit(1);
     59 }
     60 
     61 static const char *
     62 friendly(uuid_t *t)
     63 {
     64 	static uuid_t efi_slice = GPT_ENT_TYPE_EFI;
     65 	static uuid_t mslinux = GPT_ENT_TYPE_MS_BASIC_DATA;
     66 	static uuid_t freebsd = GPT_ENT_TYPE_FREEBSD;
     67 	static uuid_t hfs = GPT_ENT_TYPE_APPLE_HFS;
     68 	static uuid_t linuxswap = GPT_ENT_TYPE_LINUX_SWAP;
     69 	static uuid_t msr = GPT_ENT_TYPE_MS_RESERVED;
     70 	static uuid_t swap = GPT_ENT_TYPE_FREEBSD_SWAP;
     71 	static uuid_t ufs = GPT_ENT_TYPE_FREEBSD_UFS;
     72 	static uuid_t vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
     73 	static uuid_t nb_swap = GPT_ENT_TYPE_NETBSD_SWAP;
     74 	static uuid_t nb_ufs = GPT_ENT_TYPE_NETBSD_FFS;
     75 	static uuid_t nb_lfs = GPT_ENT_TYPE_NETBSD_LFS;
     76 	static uuid_t nb_raid = GPT_ENT_TYPE_NETBSD_RAIDFRAME;
     77 	static uuid_t nb_ccd = GPT_ENT_TYPE_NETBSD_CCD;
     78 	static uuid_t nb_cgd = GPT_ENT_TYPE_NETBSD_CGD;
     79 	static char buf[80];
     80 	char *s;
     81 
     82 	if (show_uuid)
     83 		goto unfriendly;
     84 
     85 	if (uuid_equal(t, &efi_slice, NULL))
     86 		return ("EFI System");
     87 	if (uuid_equal(t, &nb_swap, NULL))
     88 		return ("NetBSD swap");
     89 	if (uuid_equal(t, &nb_ufs, NULL))
     90 		return ("NetBSD UFS/UFS2");
     91 	if (uuid_equal(t, &nb_lfs, NULL))
     92 		return ("NetBSD LFS");
     93 	if (uuid_equal(t, &nb_raid, NULL))
     94 		return ("NetBSD RAIDFrame component");
     95 	if (uuid_equal(t, &nb_ccd, NULL))
     96 		return ("NetBSD ccd component");
     97 	if (uuid_equal(t, &nb_cgd, NULL))
     98 		return ("NetBSD Cryptographic Disk");
     99 	if (uuid_equal(t, &swap, NULL))
    100 		return ("FreeBSD swap");
    101 	if (uuid_equal(t, &ufs, NULL))
    102 		return ("FreeBSD UFS/UFS2");
    103 	if (uuid_equal(t, &vinum, NULL))
    104 		return ("FreeBSD vinum");
    105 
    106 	if (uuid_equal(t, &freebsd, NULL))
    107 		return ("FreeBSD legacy");
    108 	if (uuid_equal(t, &mslinux, NULL))
    109 		return ("Linux/Windows");
    110 	if (uuid_equal(t, &linuxswap, NULL))
    111 		return ("Linux swap");
    112 	if (uuid_equal(t, &msr, NULL))
    113 		return ("Windows reserved");
    114 	if (uuid_equal(t, &hfs, NULL))
    115 		return ("Apple HFS");
    116 
    117 unfriendly:
    118 	uuid_to_string(t, &s, NULL);
    119 	strlcpy(buf, s, sizeof buf);
    120 	free(s);
    121 	return (buf);
    122 }
    123 
    124 static void
    125 show(int fd __unused)
    126 {
    127 	uuid_t type;
    128 	off_t start;
    129 	map_t *m, *p;
    130 	struct mbr *mbr;
    131 	struct gpt_ent *ent;
    132 	unsigned int i;
    133 
    134 	printf("  %*s", lbawidth, "start");
    135 	printf("  %*s", lbawidth, "size");
    136 	printf("  index  contents\n");
    137 
    138 	m = map_first();
    139 	while (m != NULL) {
    140 		printf("  %*llu", lbawidth, (long long)m->map_start);
    141 		printf("  %*llu", lbawidth, (long long)m->map_size);
    142 		putchar(' ');
    143 		putchar(' ');
    144 		if (m->map_index > 0)
    145 			printf("%5d", m->map_index);
    146 		else
    147 			printf("     ");
    148 		putchar(' ');
    149 		putchar(' ');
    150 		switch (m->map_type) {
    151 		case MAP_TYPE_MBR:
    152 			if (m->map_start != 0)
    153 				printf("Extended ");
    154 			printf("MBR");
    155 			break;
    156 		case MAP_TYPE_PRI_GPT_HDR:
    157 			printf("Pri GPT header");
    158 			break;
    159 		case MAP_TYPE_SEC_GPT_HDR:
    160 			printf("Sec GPT header");
    161 			break;
    162 		case MAP_TYPE_PRI_GPT_TBL:
    163 			printf("Pri GPT table");
    164 			break;
    165 		case MAP_TYPE_SEC_GPT_TBL:
    166 			printf("Sec GPT table");
    167 			break;
    168 		case MAP_TYPE_MBR_PART:
    169 			p = m->map_data;
    170 			if (p->map_start != 0)
    171 				printf("Extended ");
    172 			printf("MBR part ");
    173 			mbr = p->map_data;
    174 			for (i = 0; i < 4; i++) {
    175 				start = le16toh(mbr->mbr_part[i].part_start_hi);
    176 				start = (start << 16) +
    177 				    le16toh(mbr->mbr_part[i].part_start_lo);
    178 				if (m->map_start == p->map_start + start)
    179 					break;
    180 			}
    181 			printf("%d", mbr->mbr_part[i].part_typ);
    182 			break;
    183 		case MAP_TYPE_GPT_PART:
    184 			printf("GPT part ");
    185 			ent = m->map_data;
    186 			if (show_label) {
    187 				printf("- \"%s\"",
    188 				    utf16_to_utf8(ent->ent_name));
    189 			} else {
    190 				le_uuid_dec(&ent->ent_type, &type);
    191 				printf("- %s", friendly(&type));
    192 			}
    193 			break;
    194 		case MAP_TYPE_PMBR:
    195 			printf("PMBR");
    196 			break;
    197 		}
    198 		putchar('\n');
    199 		m = m->map_next;
    200 	}
    201 }
    202 
    203 int
    204 cmd_show(int argc, char *argv[])
    205 {
    206 	int ch, fd;
    207 
    208 	while ((ch = getopt(argc, argv, "lu")) != -1) {
    209 		switch(ch) {
    210 		case 'l':
    211 			show_label = 1;
    212 			break;
    213 		case 'u':
    214 			show_uuid = 1;
    215 			break;
    216 		default:
    217 			usage_show();
    218 		}
    219 	}
    220 
    221 	if (argc == optind)
    222 		usage_show();
    223 
    224 	while (optind < argc) {
    225 		fd = gpt_open(argv[optind++]);
    226 		if (fd == -1) {
    227 			warn("unable to open device '%s'", device_name);
    228 			continue;
    229 		}
    230 
    231 		show(fd);
    232 
    233 		gpt_close(fd);
    234 	}
    235 
    236 	return (0);
    237 }
    238