show.c revision 1.21
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#if HAVE_NBTOOL_CONFIG_H 28#include "nbtool_config.h" 29#endif 30 31#include <sys/cdefs.h> 32#ifdef __FBSDID 33__FBSDID("$FreeBSD: src/sbin/gpt/show.c,v 1.14 2006/06/22 22:22:32 marcel Exp $"); 34#endif 35#ifdef __RCSID 36__RCSID("$NetBSD: show.c,v 1.21 2014/09/30 22:56:36 jnemeth Exp $"); 37#endif 38 39#include <sys/types.h> 40 41#include <err.h> 42#include <stddef.h> 43#include <stdio.h> 44#include <stdlib.h> 45#include <string.h> 46#include <unistd.h> 47 48#include "map.h" 49#include "gpt.h" 50 51static int show_label = 0; 52static int show_uuid = 0; 53static int show_guid = 0; 54static unsigned int entry = 0; 55 56const char showmsg[] = "show [-glu] [-i index] device ..."; 57 58__dead static void 59usage_show(void) 60{ 61 62 fprintf(stderr, 63 "usage: %s %s\n", getprogname(), showmsg); 64 exit(1); 65} 66 67static void 68show(void) 69{ 70 off_t start; 71 map_t *m, *p; 72 struct mbr *mbr; 73 struct gpt_ent *ent; 74 unsigned int i; 75 76 printf(" %*s", lbawidth, "start"); 77 printf(" %*s", lbawidth, "size"); 78 printf(" index contents\n"); 79 80 m = map_first(); 81 while (m != NULL) { 82 printf(" %*llu", lbawidth, (long long)m->map_start); 83 printf(" %*llu", lbawidth, (long long)m->map_size); 84 putchar(' '); 85 putchar(' '); 86 if (m->map_index > 0) 87 printf("%5d", m->map_index); 88 else 89 printf(" "); 90 putchar(' '); 91 putchar(' '); 92 switch (m->map_type) { 93 case MAP_TYPE_MBR: 94 if (m->map_start != 0) 95 printf("Extended "); 96 printf("MBR"); 97 break; 98 case MAP_TYPE_PRI_GPT_HDR: 99 printf("Pri GPT header"); 100 break; 101 case MAP_TYPE_SEC_GPT_HDR: 102 printf("Sec GPT header"); 103 break; 104 case MAP_TYPE_PRI_GPT_TBL: 105 printf("Pri GPT table"); 106 break; 107 case MAP_TYPE_SEC_GPT_TBL: 108 printf("Sec GPT table"); 109 break; 110 case MAP_TYPE_MBR_PART: 111 p = m->map_data; 112 if (p->map_start != 0) 113 printf("Extended "); 114 printf("MBR part "); 115 mbr = p->map_data; 116 for (i = 0; i < 4; i++) { 117 start = le16toh(mbr->mbr_part[i].part_start_hi); 118 start = (start << 16) + 119 le16toh(mbr->mbr_part[i].part_start_lo); 120 if (m->map_start == p->map_start + start) 121 break; 122 } 123 printf("%d", mbr->mbr_part[i].part_typ); 124 break; 125 case MAP_TYPE_GPT_PART: 126 printf("GPT part "); 127 ent = m->map_data; 128 if (show_label) { 129 printf("- \"%s\"", 130 utf16_to_utf8(ent->ent_name)); 131 } else if (show_guid) { 132 char buf[128]; 133 gpt_uuid_snprintf( 134 buf, sizeof(buf), "%d", ent->ent_guid); 135 printf("- %s", buf); 136 } else { 137 char buf[128]; 138 if (show_uuid || gpt_uuid_snprintf(buf, 139 sizeof(buf), "%ls", ent->ent_type) == -1) 140 gpt_uuid_snprintf(buf, sizeof(buf), 141 "%d", ent->ent_type); 142 printf("- %s", buf); 143 } 144 break; 145 case MAP_TYPE_PMBR: 146 printf("PMBR"); 147 break; 148 } 149 putchar('\n'); 150 m = m->map_next; 151 } 152} 153 154static void 155show_one(void) 156{ 157 map_t *m; 158 struct gpt_ent *ent; 159 char s1[128], s2[128]; 160#ifdef HN_AUTOSCALE 161 char human_num[5]; 162#endif 163 164 for (m = map_first(); m != NULL; m = m->map_next) 165 if (entry == m->map_index) 166 break; 167 if (m == NULL) { 168 warnx("%s: error: could not find index %d", 169 device_name, entry); 170 return; 171 } 172 ent = m->map_data; 173 174 printf("Details for index %d:\n", entry); 175#ifdef HN_AUTOSCALE 176 if (humanize_number(human_num, 5, (int64_t)(m->map_start * secsz), 177 "", HN_AUTOSCALE, HN_NOSPACE|HN_B) < 0) 178 human_num[0] = '\0'; 179 if (human_num[0] != '\0') 180 printf("Start: %llu (%s)\n", (long long)m->map_start, 181 human_num); 182 else 183#endif 184 printf("Start: %llu\n", (long long)m->map_start); 185#ifdef HN_AUTOSCALE 186 if (humanize_number(human_num, 5, (int64_t)(m->map_size * secsz), 187 "", HN_AUTOSCALE, HN_NOSPACE|HN_B) < 0) 188 human_num[0] = '\0'; 189 if (human_num[0] != '\0') 190 printf("Size: %llu (%s)\n", (long long)m->map_size, human_num); 191 else 192#endif 193 printf("Size: %llu\n", (long long)m->map_size); 194 195 gpt_uuid_snprintf(s1, sizeof(s1), "%s", ent->ent_type); 196 gpt_uuid_snprintf(s2, sizeof(s2), "%d", ent->ent_type); 197 if (strcmp(s1, s2) == 0) 198 strlcpy(s1, "unknown", sizeof(s1)); 199 printf("Type: %s (%s)\n", s1, s2); 200 201 gpt_uuid_snprintf(s2, sizeof(s1), "%d", ent->ent_guid); 202 printf("GUID: %s\n", s2); 203 204 printf("Label: %s\n", utf16_to_utf8(ent->ent_name)); 205 206 printf("Attributes:\n"); 207 if (ent->ent_attr == 0) 208 printf(" None\n"); 209 else { 210 if (ent->ent_attr & GPT_ENT_ATTR_REQUIRED_PARTITION) 211 printf(" required for platform to function\n"); 212 if (ent->ent_attr & GPT_ENT_ATTR_NO_BLOCK_IO_PROTOCOL) 213 printf(" UEFI won't recognize file system\n"); 214 if (ent->ent_attr & GPT_ENT_ATTR_LEGACY_BIOS_BOOTABLE) 215 printf(" legacy BIOS boot partition\n"); 216 if (ent->ent_attr & GPT_ENT_ATTR_BOOTME) 217 printf(" indicates a bootable partition\n"); 218 if (ent->ent_attr & GPT_ENT_ATTR_BOOTONCE) 219 printf(" attempt to boot this partition only once\n"); 220 if (ent->ent_attr & GPT_ENT_ATTR_BOOTFAILED) 221 printf(" partition that was marked bootonce but failed to boot\n"); 222 } 223} 224 225int 226cmd_show(int argc, char *argv[]) 227{ 228 char *p; 229 int ch, fd; 230 231 while ((ch = getopt(argc, argv, "gi:lu")) != -1) { 232 switch(ch) { 233 case 'g': 234 show_guid = 1; 235 break; 236 case 'i': 237 if (entry > 0) 238 usage_show(); 239 entry = strtoul(optarg, &p, 10); 240 if (*p != 0 || entry < 1) 241 usage_show(); 242 break; 243 case 'l': 244 show_label = 1; 245 break; 246 case 'u': 247 show_uuid = 1; 248 break; 249 default: 250 usage_show(); 251 } 252 } 253 254 if (argc == optind) 255 usage_show(); 256 257 while (optind < argc) { 258 fd = gpt_open(argv[optind++]); 259 if (fd == -1) { 260 warn("unable to open device '%s'", device_name); 261 continue; 262 } 263 264 if (entry > 0) 265 show_one(); 266 else 267 show(); 268 269 gpt_close(fd); 270 } 271 272 return (0); 273} 274