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 1.3 2007/06/17 08:34:59 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 char *save_name1 /*= NULL*/;
  58         static char *save_name2 /*= NULL*/;
  59
  60         if (show_uuid)
  61                 goto unfriendly;
  62
  63         uuid_addr_lookup(t, &save_name1, NULL);
  64         if (save_name1)
  65                 return (save_name1);
  66
  67 unfriendly:
  68         if (save_name2) {
  69                 free(save_name2);
  70                 save_name2 = NULL;
  71         }
  72         uuid_to_string(t, &save_name2, NULL);
  73         return (save_name2);
  74 }
  75
  76 static void
  77 show(int fd __unused)
  78 {
  79         uuid_t type;
  80         off_t start;
  81         map_t *m, *p;
  82         struct mbr *mbr;
  83         struct gpt_ent *ent;
  84         unsigned int i;
  85
  86         printf("  %*s", lbawidth, "start");
  87         printf("  %*s", lbawidth, "size");
  88         printf("  index  contents\n");
  89
  90         m = map_first();
  91         while (m != NULL) {
  92                 printf("  %*llu", lbawidth, (long long)m->map_start);
  93                 printf("  %*llu", lbawidth, (long long)m->map_size);
  94                 putchar(' ');
  95                 putchar(' ');
  96                 if (m->map_index != NOENTRY)
  97                         printf("%5d", m->map_index);
  98                 else
  99                         printf("    -");
 100                 putchar(' ');
 101                 putchar(' ');
 102                 switch (m->map_type) {
 103                 case MAP_TYPE_MBR:
 104                         if (m->map_start != 0)
 105                                 printf("Extended ");
 106                         printf("MBR");
 107                         break;
 108                 case MAP_TYPE_PRI_GPT_HDR:
 109                         printf("Pri GPT header");
 110                         break;
 111                 case MAP_TYPE_SEC_GPT_HDR:
 112                         printf("Sec GPT header");
 113                         break;
 114                 case MAP_TYPE_PRI_GPT_TBL:
 115                         printf("Pri GPT table");
 116                         break;
 117                 case MAP_TYPE_SEC_GPT_TBL:
 118                         printf("Sec GPT table");
 119                         break;
 120                 case MAP_TYPE_MBR_PART:
 121                         p = m->map_data;
 122                         if (p->map_start != 0)
 123                                 printf("Extended ");
 124                         printf("MBR part ");
 125                         mbr = p->map_data;
 126                         for (i = 0; i < 4; i++) {
 127                                 start = le16toh(mbr->mbr_part[i].part_start_hi);
 128                                 start = (start << 16) +
 129                                     le16toh(mbr->mbr_part[i].part_start_lo);
 130                                 if (m->map_start == p->map_start + start)
 131                                         break;
 132                         }
 133                         printf("%d", mbr->mbr_part[i].part_typ);
 134                         break;
 135                 case MAP_TYPE_GPT_PART:
 136                         printf("GPT part ");
 137                         ent = m->map_data;
 138                         if (show_label) {
 139                                 printf("- \"%s\"",
 140                                     utf16_to_utf8(ent->ent_name));
 141                         } else {
 142                                 le_uuid_dec(&ent->ent_type, &type);
 143                                 printf("- %s", friendly(&type));
 144                         }
 145                         break;
 146                 case MAP_TYPE_PMBR:
 147                         printf("PMBR");
 148                         break;
 149                 }
 150                 putchar('\n');
 151                 m = m->map_next;
 152         }
 153 }
 154
 155 int
 156 cmd_show(int argc, char *argv[])
 157 {
 158         int ch, fd;
 159
 160         while ((ch = getopt(argc, argv, "lu")) != -1) {
 161                 switch(ch) {
 162                 case 'l':
 163                         show_label = 1;
 164                         break;
 165                 case 'u':
 166                         show_uuid = 1;
 167                         break;
 168                 default:
 169                         usage_show();
 170                 }
 171         }
 172
 173         if (argc == optind)
 174                 usage_show();
 175
 176         while (optind < argc) {
 177                 fd = gpt_open(argv[optind++]);
 178                 if (fd == -1) {
 179                         warn("unable to open device '%s'", device_name);
 180                         continue;
 181                 }
 182
 183                 show(fd);
 184
 185                 gpt_close(fd);
 186         }
 187
 188         return (0);
 189 }