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
  27 #include <sys/cdefs.h>
  28 __FBSDID("$FreeBSD$");
  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 boot = GPT_ENT_TYPE_FREEBSD_BOOT;
  58         static uuid_t efi_slice = GPT_ENT_TYPE_EFI;
  59         static uuid_t mslinux = GPT_ENT_TYPE_MS_BASIC_DATA;
  60         static uuid_t freebsd = GPT_ENT_TYPE_FREEBSD;
  61         static uuid_t hfs = GPT_ENT_TYPE_APPLE_HFS;
  62         static uuid_t linuxswap = GPT_ENT_TYPE_LINUX_SWAP;
  63         static uuid_t msr = GPT_ENT_TYPE_MS_RESERVED;
  64         static uuid_t swap = GPT_ENT_TYPE_FREEBSD_SWAP;
  65         static uuid_t ufs = GPT_ENT_TYPE_FREEBSD_UFS;
  66         static uuid_t vinum = GPT_ENT_TYPE_FREEBSD_VINUM;
  67         static uuid_t zfs = GPT_ENT_TYPE_FREEBSD_ZFS;
  68         static char buf[80];
  69         char *s;
  70
  71         if (show_uuid)
  72                 goto unfriendly;
  73
  74         if (uuid_equal(t, &efi_slice, NULL))
  75                 return ("EFI System");
  76         if (uuid_equal(t, &boot, NULL))
  77                 return ("FreeBSD boot");
  78         if (uuid_equal(t, &swap, NULL))
  79                 return ("FreeBSD swap");
  80         if (uuid_equal(t, &ufs, NULL))
  81                 return ("FreeBSD UFS/UFS2");
  82         if (uuid_equal(t, &vinum, NULL))
  83                 return ("FreeBSD vinum");
  84         if (uuid_equal(t, &zfs, NULL))
  85                 return ("FreeBSD ZFS");
  86
  87         if (uuid_equal(t, &freebsd, NULL))
  88                 return ("FreeBSD legacy");
  89         if (uuid_equal(t, &mslinux, NULL))
  90                 return ("Linux/Windows");
  91         if (uuid_equal(t, &linuxswap, NULL))
  92                 return ("Linux swap");
  93         if (uuid_equal(t, &msr, NULL))
  94                 return ("Windows reserved");
  95         if (uuid_equal(t, &hfs, NULL))
  96                 return ("Apple HFS");
  97
  98 unfriendly:
  99         uuid_to_string(t, &s, NULL);
 100         strlcpy(buf, s, sizeof buf);
 101         free(s);
 102         return (buf);
 103 }
 104
 105 static void
 106 show(int fd __unused)
 107 {
 108         uuid_t type;
 109         off_t start;
 110         map_t *m, *p;
 111         struct mbr *mbr;
 112         struct gpt_ent *ent;
 113         unsigned int i;
 114
 115         printf("  %*s", lbawidth, "start");
 116         printf("  %*s", lbawidth, "size");
 117         printf("  index  contents\n");
 118
 119         m = map_first();
 120         while (m != NULL) {
 121                 printf("  %*llu", lbawidth, (long long)m->map_start);
 122                 printf("  %*llu", lbawidth, (long long)m->map_size);
 123                 putchar(' ');
 124                 putchar(' ');
 125                 if (m->map_index > 0)
 126                         printf("%5d", m->map_index);
 127                 else
 128                         printf("     ");
 129                 putchar(' ');
 130                 putchar(' ');
 131                 switch (m->map_type) {
 132                 case MAP_TYPE_MBR:
 133                         if (m->map_start != 0)
 134                                 printf("Extended ");
 135                         printf("MBR");
 136                         break;
 137                 case MAP_TYPE_PRI_GPT_HDR:
 138                         printf("Pri GPT header");
 139                         break;
 140                 case MAP_TYPE_SEC_GPT_HDR:
 141                         printf("Sec GPT header");
 142                         break;
 143                 case MAP_TYPE_PRI_GPT_TBL:
 144                         printf("Pri GPT table");
 145                         break;
 146                 case MAP_TYPE_SEC_GPT_TBL:
 147                         printf("Sec GPT table");
 148                         break;
 149                 case MAP_TYPE_MBR_PART:
 150                         p = m->map_data;
 151                         if (p->map_start != 0)
 152                                 printf("Extended ");
 153                         printf("MBR part ");
 154                         mbr = p->map_data;
 155                         for (i = 0; i < 4; i++) {
 156                                 start = le16toh(mbr->mbr_part[i].part_start_hi);
 157                                 start = (start << 16) +
 158                                     le16toh(mbr->mbr_part[i].part_start_lo);
 159                                 if (m->map_start == p->map_start + start)
 160                                         break;
 161                         }
 162                         printf("%d", mbr->mbr_part[i].part_typ);
 163                         break;
 164                 case MAP_TYPE_GPT_PART:
 165                         printf("GPT part ");
 166                         ent = m->map_data;
 167                         if (show_label) {
 168                                 printf("- \"%s\"",
 169                                     utf16_to_utf8(ent->ent_name));
 170                         } else {
 171                                 le_uuid_dec(&ent->ent_type, &type);
 172                                 printf("- %s", friendly(&type));
 173                         }
 174                         break;
 175                 case MAP_TYPE_PMBR:
 176                         printf("PMBR");
 177                         break;
 178                 }
 179                 putchar('\n');
 180                 m = m->map_next;
 181         }
 182 }
 183
 184 int
 185 cmd_show(int argc, char *argv[])
 186 {
 187         int ch, fd;
 188
 189         while ((ch = getopt(argc, argv, "lu")) != -1) {
 190                 switch(ch) {
 191                 case 'l':
 192                         show_label = 1;
 193                         break;
 194                 case 'u':
 195                         show_uuid = 1;
 196                         break;
 197                 default:
 198                         usage_show();
 199                 }
 200         }
 201
 202         if (argc == optind)
 203                 usage_show();
 204
 205         while (optind < argc) {
 206                 fd = gpt_open(argv[optind++]);
 207                 if (fd == -1) {
 208                         warn("unable to open device '%s'", device_name);
 209                         continue;
 210                 }
 211
 212                 show(fd);
 213
 214                 gpt_close(fd);
 215         }
 216
 217         return (0);
 218 }