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  */
  28
  29 #include <sys/types.h>
  30 #include <sys/diskmbr.h>
  31
  32 #include <err.h>
  33 #include <stdbool.h>
  34 #include <stddef.h>
  35 #include <stdio.h>
  36 #include <stdlib.h>
  37 #include <string.h>
  38 #include <unistd.h>
  39
  40 #include "map.h"
  41 #include "gpt.h"
  42
  43 static bool show_guid = false;
  44 static bool show_label = false;
  45 static bool show_uuid = false;
  46
  47 static void
  48 usage_show(void)
  49 {
  50         fprintf(stderr,
  51             "usage: %s [-glu] device ...\n", getprogname());
  52         exit(1);
  53 }
  54
  55 static const char *
  56 friendly(uuid_t *t)
  57 {
  58         static char *save_name1 /*= NULL*/;
  59         static char *save_name2 /*= NULL*/;
  60
  61         if (show_uuid)
  62                 goto unfriendly;
  63
  64         uuid_addr_lookup(t, &save_name1, NULL);
  65         if (save_name1)
  66                 return (save_name1);
  67
  68 unfriendly:
  69         if (save_name2) {
  70                 free(save_name2);
  71                 save_name2 = NULL;
  72         }
  73         uuid_to_string(t, &save_name2, NULL);
  74         return (save_name2);
  75 }
  76
  77 static void
  78 show(int fd __unused)
  79 {
  80         uuid_t type, guid;
  81         off_t start;
  82         map_t *m, *p;
  83         struct mbr *mbr;
  84         struct gpt_ent *ent;
  85         unsigned int i;
  86         char *s;
  87
  88         printf("  %*s", lbawidth, "start");
  89         printf("  %*s", lbawidth, "size");
  90         printf("  index  contents\n");
  91
  92         m = map_first();
  93         while (m != NULL) {
  94                 printf("  %*llu", lbawidth, (long long)m->map_start);
  95                 printf("  %*llu", lbawidth, (long long)m->map_size);
  96                 putchar(' ');
  97                 putchar(' ');
  98                 if (m->map_index != NOENTRY)
  99                         printf("%5d", m->map_index);
 100                 else
 101                         printf("    -");
 102                 putchar(' ');
 103                 putchar(' ');
 104                 switch (m->map_type) {
 105                 case MAP_TYPE_UNUSED:
 106                         printf("Unused");
 107                         break;
 108                 case MAP_TYPE_MBR:
 109                         if (m->map_start != 0)
 110                                 printf("Extended ");
 111                         printf("MBR");
 112                         break;
 113                 case MAP_TYPE_PRI_GPT_HDR:
 114                         printf("Pri GPT header");
 115                         break;
 116                 case MAP_TYPE_SEC_GPT_HDR:
 117                         printf("Sec GPT header");
 118                         break;
 119                 case MAP_TYPE_PRI_GPT_TBL:
 120                         printf("Pri GPT table");
 121                         break;
 122                 case MAP_TYPE_SEC_GPT_TBL:
 123                         printf("Sec GPT table");
 124                         break;
 125                 case MAP_TYPE_MBR_PART:
 126                         p = m->map_data;
 127                         if (p->map_start != 0)
 128                                 printf("Extended ");
 129                         printf("MBR part ");
 130                         mbr = p->map_data;
 131                         for (i = 0; i < 4; i++) {
 132                                 start = le16toh(mbr->mbr_part[i].part_start_hi);
 133                                 start = (start << 16) +
 134                                     le16toh(mbr->mbr_part[i].part_start_lo);
 135                                 if (m->map_start == p->map_start + start)
 136                                         break;
 137                         }
 138                         if (i == 4) {
 139                                 /* wasn't there */
 140                                 printf("[partition not found?]");
 141                         } else {
 142                                 printf("%d%s", mbr->mbr_part[i].part_typ,
 143                                     mbr->mbr_part[i].part_flag == 0x80 ?
 144                                     " (active)" : "");
 145                         }
 146                         break;
 147                 case MAP_TYPE_GPT_PART:
 148                         printf("GPT part ");
 149                         ent = m->map_data;
 150                         if (show_label) {
 151                                 printf("- \"%s\"",
 152                                     utf16_to_utf8(ent->ent_name));
 153                         } else if (show_guid) {
 154                                 s = NULL;
 155                                 le_uuid_dec(&ent->ent_uuid, &guid);
 156                                 uuid_to_string(&guid, &s, NULL);
 157                                 printf("- %s", s);
 158                                 free(s);
 159                                 s = NULL;
 160                         } else {
 161                                 le_uuid_dec(&ent->ent_type, &type);
 162                                 printf("- %s", friendly(&type));
 163                         }
 164                         break;
 165                 case MAP_TYPE_PMBR:
 166                         printf("PMBR");
 167                         mbr = m->map_data;
 168                         if (mbr->mbr_part[0].part_typ == DOSPTYP_PMBR &&
 169                             mbr->mbr_part[0].part_flag == 0x80)
 170                                 printf(" (active)");
 171                         break;
 172                 default:
 173                         printf("Unknown %#x", m->map_type);
 174                         break;
 175                 }
 176                 putchar('\n');
 177                 m = m->map_next;
 178         }
 179 }
 180
 181 int
 182 cmd_show(int argc, char *argv[])
 183 {
 184         int ch, fd;
 185
 186         while ((ch = getopt(argc, argv, "glu")) != -1) {
 187                 switch(ch) {
 188                 case 'g':
 189                         show_guid = true;
 190                         break;
 191                 case 'l':
 192                         show_label = true;
 193                         break;
 194                 case 'u':
 195                         show_uuid = true;
 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 }