sbin/gpt/show.c

   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  * $FreeBSD: src/sbin/gpt/show.c,v 1.14 2006/06/22 22:22:32 marcel Exp $
  27  * $DragonFly: src/sbin/gpt/show.c,v 1.1 2007/06/16 22:29:27 dillon Exp $
  28  */
  29
  30 #include <sys/types.h>
  31
  32 #include <err.h>
  33 #include <stddef.h>
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <unistd.h>
  38
  39 #include "map.h"
  40 #include "gpt.h"
  41
  42 static int show_label = 0;
  43 static int show_uuid = 0;
  44
  45 static void
  46 usage_show(void)
  47 {
  48
  49         fprintf(stderr,
  50             "usage: %s [-lu] device ...\n", getprogname());
  51         exit(1);
  52 }
  53
  54 static const char *
  55 friendly(uuid_t *t)
  56 {
  57         static uuid_t efi_slice = GPT_ENT_TYPE_EFI;
  58         static uuid_t mslinux = GPT_ENT_TYPE_MS_BASIC_DATA;
  59         static uuid_t freebsd = GPT_ENT_TYPE_FREEBSD;
  60         static uuid_t hfs = GPT_ENT_TYPE_APPLE_HFS;
  61         static uuid_t linuxswap = GPT_ENT_TYPE_LINUX_SWAP;
  62         static uuid_t msr = GPT_ENT_TYPE_MS_RESERVED;
  63         static uuid_t swap = GPT_ENT_TYPE_FREEBSD_SWAP;
  64         static uuid_t ufs = GPT_ENT_TYPE_FREEBSD_UFS;
  65         static uuid_t vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
  66         static char buf[80];
  67         char *s;
  68
  69         if (show_uuid)
  70                 goto unfriendly;
  71
  72         if (uuid_equal(t, &efi_slice, NULL))
  73                 return ("EFI System");
  74         if (uuid_equal(t, &swap, NULL))
  75                 return ("FreeBSD swap");
  76         if (uuid_equal(t, &ufs, NULL))
  77                 return ("FreeBSD UFS/UFS2");
  78         if (uuid_equal(t, &vinum, NULL))
  79                 return ("FreeBSD vinum");
  80
  81         if (uuid_equal(t, &freebsd, NULL))
  82                 return ("FreeBSD legacy");
  83         if (uuid_equal(t, &mslinux, NULL))
  84                 return ("Linux/Windows");
  85         if (uuid_equal(t, &linuxswap, NULL))
  86                 return ("Linux swap");
  87         if (uuid_equal(t, &msr, NULL))
  88                 return ("Windows reserved");
  89         if (uuid_equal(t, &hfs, NULL))
  90                 return ("Apple HFS");
  91
  92 unfriendly:
  93         uuid_to_string(t, &s, NULL);
  94         strlcpy(buf, s, sizeof buf);
  95         free(s);
  96         return (buf);
  97 }
  98
  99 static void
 100 show(int fd __unused)
 101 {
 102         uuid_t type;
 103         off_t start;
 104         map_t *m, *p;
 105         struct mbr *mbr;
 106         struct gpt_ent *ent;
 107         unsigned int i;
 108
 109         printf("  %*s", lbawidth, "start");
 110         printf("  %*s", lbawidth, "size");
 111         printf("  index  contents\n");
 112
 113         m = map_first();
 114         while (m != NULL) {
 115                 printf("  %*llu", lbawidth, (long long)m->map_start);
 116                 printf("  %*llu", lbawidth, (long long)m->map_size);
 117                 putchar(' ');
 118                 putchar(' ');
 119                 if (m->map_index > 0)
 120                         printf("%5d", m->map_index);
 121                 else
 122                         printf("     ");
 123                 putchar(' ');
 124                 putchar(' ');
 125                 switch (m->map_type) {
 126                 case MAP_TYPE_MBR:
 127                         if (m->map_start != 0)
 128                                 printf("Extended ");
 129                         printf("MBR");
 130                         break;
 131                 case MAP_TYPE_PRI_GPT_HDR:
 132                         printf("Pri GPT header");
 133                         break;
 134                 case MAP_TYPE_SEC_GPT_HDR:
 135                         printf("Sec GPT header");
 136                         break;
 137                 case MAP_TYPE_PRI_GPT_TBL:
 138                         printf("Pri GPT table");
 139                         break;
 140                 case MAP_TYPE_SEC_GPT_TBL:
 141                         printf("Sec GPT table");
 142                         break;
 143                 case MAP_TYPE_MBR_PART:
 144                         p = m->map_data;
 145                         if (p->map_start != 0)
 146                                 printf("Extended ");
 147                         printf("MBR part ");
 148                         mbr = p->map_data;
 149                         for (i = 0; i < 4; i++) {
 150                                 start = le16toh(mbr->mbr_part[i].part_start_hi);
 151                                 start = (start << 16) +
 152                                     le16toh(mbr->mbr_part[i].part_start_lo);
 153                                 if (m->map_start == p->map_start + start)
 154                                         break;
 155                         }
 156                         printf("%d", mbr->mbr_part[i].part_typ);
 157                         break;
 158                 case MAP_TYPE_GPT_PART:
 159                         printf("GPT part ");
 160                         ent = m->map_data;
 161                         if (show_label) {
 162                                 printf("- \"%s\"",
 163                                     utf16_to_utf8(ent->ent_name));
 164                         } else {
 165                                 le_uuid_dec(&ent->ent_type, &type);
 166                                 printf("- %s", friendly(&type));
 167                         }
 168                         break;
 169                 case MAP_TYPE_PMBR:
 170                         printf("PMBR");
 171                         break;
 172                 }
 173                 putchar('\n');
 174                 m = m->map_next;
 175         }
 176 }
 177
 178 int
 179 cmd_show(int argc, char *argv[])
 180 {
 181         int ch, fd;
 182
 183         while ((ch = getopt(argc, argv, "lu")) != -1) {
 184                 switch(ch) {
 185                 case 'l':
 186                         show_label = 1;
 187                         break;
 188                 case 'u':
 189                         show_uuid = 1;
 190                         break;
 191                 default:
 192                         usage_show();
 193                 }
 194         }
 195
 196         if (argc == optind)
 197                 usage_show();
 198
 199         while (optind < argc) {
 200                 fd = gpt_open(argv[optind++]);
 201                 if (fd == -1) {
 202                         warn("unable to open device '%s'", device_name);
 203                         continue;
 204                 }
 205
 206                 show(fd);
 207
 208                 gpt_close(fd);
 209         }
 210
 211         return (0);
 212 }