show.c revision 1.28
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 1.28 2015/12/03 01:07:28 christos 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#include "gpt_private.h" 51 52static int cmd_show(gpt_t, int, char *[]); 53 54static const char *showhelp[] = { 55 "[-glu] [-i index]", 56}; 57 58#define SHOW_UUID 1 59#define SHOW_GUID 2 60#define SHOW_LABEL 4 61 62struct gpt_cmd c_show = { 63 "show", 64 cmd_show, 65 showhelp, __arraycount(showhelp), 66 GPT_READONLY, 67}; 68 69#define usage() gpt_usage(NULL, &c_show) 70 71static int 72show(gpt_t gpt, int show) 73{ 74 off_t start; 75 map_t m, p; 76 struct mbr *mbr; 77 struct gpt_ent *ent; 78 unsigned int i; 79 char buf[128], *b = buf; 80 uint8_t utfbuf[__arraycount(ent->ent_name) * 3 + 1]; 81 82 printf(" %*s", gpt->lbawidth, "start"); 83 printf(" %*s", gpt->lbawidth, "size"); 84 printf(" index contents\n"); 85 86 m = map_first(gpt); 87 while (m != NULL) { 88 printf(" %*llu", gpt->lbawidth, (long long)m->map_start); 89 printf(" %*llu", gpt->lbawidth, (long long)m->map_size); 90 putchar(' '); 91 putchar(' '); 92 if (m->map_index > 0) 93 printf("%5d", m->map_index); 94 else 95 printf(" "); 96 putchar(' '); 97 putchar(' '); 98 switch (m->map_type) { 99 case MAP_TYPE_UNUSED: 100 printf("Unused"); 101 break; 102 case MAP_TYPE_MBR: 103 if (m->map_start != 0) 104 printf("Extended "); 105 printf("MBR"); 106 break; 107 case MAP_TYPE_PRI_GPT_HDR: 108 printf("Pri GPT header"); 109 break; 110 case MAP_TYPE_SEC_GPT_HDR: 111 printf("Sec GPT header"); 112 break; 113 case MAP_TYPE_PRI_GPT_TBL: 114 printf("Pri GPT table"); 115 break; 116 case MAP_TYPE_SEC_GPT_TBL: 117 printf("Sec GPT table"); 118 break; 119 case MAP_TYPE_MBR_PART: 120 p = m->map_data; 121 if (p->map_start != 0) 122 printf("Extended "); 123 printf("MBR part "); 124 mbr = p->map_data; 125 for (i = 0; i < 4; i++) { 126 start = le16toh(mbr->mbr_part[i].part_start_hi); 127 start = (start << 16) + 128 le16toh(mbr->mbr_part[i].part_start_lo); 129 if (m->map_start == p->map_start + start) 130 break; 131 } 132 printf("%d", mbr->mbr_part[i].part_typ); 133 break; 134 case MAP_TYPE_GPT_PART: 135 printf("GPT part "); 136 ent = m->map_data; 137 if (show & SHOW_LABEL) { 138 utf16_to_utf8(ent->ent_name, utfbuf, 139 sizeof(utfbuf)); 140 b = (char *)buf; 141 } else if (show & SHOW_GUID) { 142 gpt_uuid_snprintf( buf, sizeof(buf), "%d", 143 ent->ent_guid); 144 } else if (show & SHOW_UUID) { 145 gpt_uuid_snprintf(buf, sizeof(buf), 146 "%d", ent->ent_type); 147 } else { 148 gpt_uuid_snprintf(buf, sizeof(buf), "%ls", 149 ent->ent_type); 150 } 151 printf("- %s", b); 152 break; 153 case MAP_TYPE_PMBR: 154 printf("PMBR"); 155 break; 156 default: 157 printf("Unknown %#x", m->map_type); 158 break; 159 } 160 putchar('\n'); 161 m = m->map_next; 162 } 163 return 0; 164} 165 166static void 167show_num(gpt_t gpt, const char *prompt, uintmax_t num) 168{ 169#ifdef HN_AUTOSCALE 170 char human_num[5]; 171 if (humanize_number(human_num, 5, (int64_t)(num * gpt->secsz), 172 "", HN_AUTOSCALE, HN_NOSPACE|HN_B) < 0) 173 human_num[0] = '\0'; 174#endif 175 printf("%s: %ju", prompt, num); 176#ifdef HN_AUTOSCALE 177 if (human_num[0] != '\0') 178 printf("(%s)", human_num); 179#endif 180 181 printf("\n"); 182} 183 184static int 185show_one(gpt_t gpt, unsigned int entry) 186{ 187 map_t m; 188 struct gpt_ent *ent; 189 char s1[128], s2[128]; 190 uint8_t utfbuf[__arraycount(ent->ent_name) * 3 + 1]; 191 192 for (m = map_first(gpt); m != NULL; m = m->map_next) 193 if (entry == m->map_index) 194 break; 195 if (m == NULL) { 196 gpt_warnx(gpt, "Could not find index %d", entry); 197 return -1; 198 } 199 ent = m->map_data; 200 201 printf("Details for index %d:\n", entry); 202 show_num(gpt, "Start", m->map_start); 203 show_num(gpt, "Size", m->map_size); 204 205 gpt_uuid_snprintf(s1, sizeof(s1), "%s", ent->ent_type); 206 gpt_uuid_snprintf(s2, sizeof(s2), "%d", ent->ent_type); 207 if (strcmp(s1, s2) == 0) 208 strlcpy(s1, "unknown", sizeof(s1)); 209 printf("Type: %s (%s)\n", s1, s2); 210 211 gpt_uuid_snprintf(s2, sizeof(s1), "%d", ent->ent_guid); 212 printf("GUID: %s\n", s2); 213 214 utf16_to_utf8(ent->ent_name, utfbuf, sizeof(utfbuf)); 215 printf("Label: %s\n", (char *)utfbuf); 216 217 printf("Attributes:\n"); 218 if (ent->ent_attr == 0) { 219 printf(" None\n"); 220 return 0; 221 } 222 if (ent->ent_attr & GPT_ENT_ATTR_REQUIRED_PARTITION) 223 printf(" required for platform to function\n"); 224 if (ent->ent_attr & GPT_ENT_ATTR_NO_BLOCK_IO_PROTOCOL) 225 printf(" UEFI won't recognize file system\n"); 226 if (ent->ent_attr & GPT_ENT_ATTR_LEGACY_BIOS_BOOTABLE) 227 printf(" legacy BIOS boot partition\n"); 228 if (ent->ent_attr & GPT_ENT_ATTR_BOOTME) 229 printf(" indicates a bootable partition\n"); 230 if (ent->ent_attr & GPT_ENT_ATTR_BOOTONCE) 231 printf(" attempt to boot this partition only once\n"); 232 if (ent->ent_attr & GPT_ENT_ATTR_BOOTFAILED) 233 printf(" partition was marked bootonce but failed to boot\n"); 234 return 0; 235} 236 237static int 238cmd_show(gpt_t gpt, int argc, char *argv[]) 239{ 240 int ch; 241 int xshow = 0; 242 unsigned int entry = 0; 243 244 while ((ch = getopt(argc, argv, "gi:lu")) != -1) { 245 switch(ch) { 246 case 'g': 247 xshow |= SHOW_GUID; 248 break; 249 case 'i': 250 if (gpt_entry_get(&entry) == -1) 251 return usage(); 252 break; 253 case 'l': 254 xshow |= SHOW_LABEL; 255 break; 256 case 'u': 257 xshow |= SHOW_UUID; 258 break; 259 default: 260 return usage(); 261 } 262 } 263 264 if (argc != optind) 265 return usage(); 266 267 return entry > 0 ? show_one(gpt, entry) : show(gpt, xshow); 268} 269