1 /* 2 * volume_id - reads filesystem label and uuid 3 * 4 * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org> 5 * 6 * This library is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * This library is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with this library; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 19 */ 20 21 #include "libbb.h" 22 #include "volume_id.h" 23 24 PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN 25 26 #define dbg(...) ((void)0) 27 /* #define dbg(...) bb_error_msg(__VA_ARGS__) */ 28 29 /* volume_id.h */ 30 31 #define VOLUME_ID_VERSION 48 32 33 #define VOLUME_ID_LABEL_SIZE 64 34 #define VOLUME_ID_UUID_SIZE 36 35 #define VOLUME_ID_FORMAT_SIZE 32 36 #define VOLUME_ID_PARTITIONS_MAX 256 37 38 enum volume_id_usage { 39 VOLUME_ID_UNUSED, 40 VOLUME_ID_UNPROBED, 41 VOLUME_ID_OTHER, 42 VOLUME_ID_FILESYSTEM, 43 VOLUME_ID_PARTITIONTABLE, 44 VOLUME_ID_RAID, 45 VOLUME_ID_DISKLABEL, 46 VOLUME_ID_CRYPTO, 47 }; 48 49 #ifdef UNUSED_PARTITION_CODE 50 struct volume_id_partition { 51 // const char *type; 52 // const char *usage; 53 // smallint usage_id; 54 // uint8_t pt_type_raw; 55 // uint64_t pt_off; 56 // uint64_t pt_len; 57 }; 58 #endif 59 60 struct volume_id { 61 int fd; 62 // int fd_close:1; 63 int error; 64 size_t sbbuf_len; 65 size_t seekbuf_len; 66 uint8_t *sbbuf; 67 uint8_t *seekbuf; 68 uint64_t seekbuf_off; 69 #if ENABLE_FEATURE_BLKID_TYPE 70 const char *type; 71 #endif 72 #ifdef UNUSED_PARTITION_CODE 73 struct volume_id_partition *partitions; 74 size_t partition_count; 75 #endif 76 // uint8_t label_raw[VOLUME_ID_LABEL_SIZE]; 77 // size_t label_raw_len; 78 char label[VOLUME_ID_LABEL_SIZE+1]; 79 // uint8_t uuid_raw[VOLUME_ID_UUID_SIZE]; 80 // size_t uuid_raw_len; 81 /* uuid is stored in ASCII (not binary) form here: */ 82 char uuid[VOLUME_ID_UUID_SIZE+1]; 83 // char type_version[VOLUME_ID_FORMAT_SIZE]; 84 // smallint usage_id; 85 // const char *usage; 86 }; 87 88 struct volume_id* FAST_FUNC volume_id_open_node(int fd); 89 int FAST_FUNC volume_id_probe_all(struct volume_id *id, /*uint64_t off,*/ uint64_t size); 90 void FAST_FUNC free_volume_id(struct volume_id *id); 91 92 /* util.h */ 93 94 /* size of superblock buffer, reiserfs block is at 64k */ 95 #define SB_BUFFER_SIZE 0x11000 96 /* size of seek buffer, FAT cluster is 32k max */ 97 #define SEEK_BUFFER_SIZE 0x10000 98 99 #if BB_LITTLE_ENDIAN 100 # define le16_to_cpu(x) (uint16_t)(x) 101 # define le32_to_cpu(x) (uint32_t)(x) 102 # define le64_to_cpu(x) (uint64_t)(x) 103 # define be16_to_cpu(x) (uint16_t)(bswap_16(x)) 104 # define be32_to_cpu(x) (uint32_t)(bswap_32(x)) 105 # define cpu_to_le16(x) (uint16_t)(x) 106 # define cpu_to_le32(x) (uint32_t)(x) 107 # define cpu_to_be32(x) (uint32_t)(bswap_32(x)) 108 #else 109 # define le16_to_cpu(x) (uint16_t)(bswap_16(x)) 110 # define le32_to_cpu(x) (uint32_t)(bswap_32(x)) 111 # define le64_to_cpu(x) (uint64_t)(bb_bswap_64(x)) 112 # define be16_to_cpu(x) (uint16_t)(x) 113 # define be32_to_cpu(x) (uint32_t)(x) 114 # define cpu_to_le16(x) (uint16_t)(bswap_16(x)) 115 # define cpu_to_le32(x) (uint32_t)(bswap_32(x)) 116 # define cpu_to_be32(x) (uint32_t)(x) 117 #endif 118 119 /* volume_id_set_uuid(id,buf,fmt) assumes size of uuid buf 120 * by shifting: 4 << fmt, except for fmt == UUID_DCE_STRING. 121 * The constants below should match sizes. 122 */ 123 enum uuid_format { 124 UUID_DOS = 0, /* 4 bytes */ 125 UUID_NTFS = 1, /* 8 bytes */ 126 UUID_DCE = 2, /* 16 bytes */ 127 UUID_DCE_STRING = 3, /* 36 bytes (VOLUME_ID_UUID_SIZE) */ 128 }; 129 130 enum endian { 131 LE = 0, 132 BE = 1 133 }; 134 135 void volume_id_set_unicode16(char *str, size_t len, const uint8_t *buf, enum endian endianess, size_t count); 136 //void volume_id_set_usage(struct volume_id *id, enum volume_id_usage usage_id); 137 //void volume_id_set_usage_part(struct volume_id_partition *part, enum volume_id_usage usage_id); 138 //void volume_id_set_label_raw(struct volume_id *id, const uint8_t *buf, size_t count); 139 void volume_id_set_label_string(struct volume_id *id, const uint8_t *buf, size_t count); 140 void volume_id_set_label_unicode16(struct volume_id *id, const uint8_t *buf, enum endian endianess, size_t count); 141 void volume_id_set_uuid(struct volume_id *id, const uint8_t *buf, enum uuid_format format); 142 void *volume_id_get_buffer(struct volume_id *id, uint64_t off, size_t len); 143 void volume_id_free_buffer(struct volume_id *id); 144 145 146 /* Probe routines */ 147 148 /* RAID */ 149 150 //int FAST_FUNC volume_id_probe_highpoint_37x_raid(struct volume_id *id /*,uint64_t off*/); 151 //int FAST_FUNC volume_id_probe_highpoint_45x_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); 152 153 //int FAST_FUNC volume_id_probe_intel_software_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); 154 155 int FAST_FUNC volume_id_probe_linux_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); 156 157 //int FAST_FUNC volume_id_probe_lsi_mega_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); 158 159 //int FAST_FUNC volume_id_probe_nvidia_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); 160 161 //int FAST_FUNC volume_id_probe_promise_fasttrack_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); 162 163 //int FAST_FUNC volume_id_probe_silicon_medley_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); 164 165 //int FAST_FUNC volume_id_probe_via_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size); 166 167 //int FAST_FUNC volume_id_probe_lvm1(struct volume_id *id /*,uint64_t off*/); 168 //int FAST_FUNC volume_id_probe_lvm2(struct volume_id *id /*,uint64_t off*/); 169 170 /* FS */ 171 172 int FAST_FUNC volume_id_probe_bcache(struct volume_id *id /*,uint64_t off*/); 173 174 int FAST_FUNC volume_id_probe_btrfs(struct volume_id *id /*,uint64_t off*/); 175 176 int FAST_FUNC volume_id_probe_cramfs(struct volume_id *id /*,uint64_t off*/); 177 178 int FAST_FUNC volume_id_probe_ext(struct volume_id *id /*,uint64_t off*/); 179 180 int FAST_FUNC volume_id_probe_vfat(struct volume_id *id /*,uint64_t off*/); 181 182 int FAST_FUNC volume_id_probe_hfs_hfsplus(struct volume_id *id /*,uint64_t off*/); 183 184 //int FAST_FUNC volume_id_probe_hpfs(struct volume_id *id /*,uint64_t off*/); 185 186 int FAST_FUNC volume_id_probe_iso9660(struct volume_id *id /*,uint64_t off*/); 187 188 int FAST_FUNC volume_id_probe_jfs(struct volume_id *id /*,uint64_t off*/); 189 190 int FAST_FUNC volume_id_probe_lfs(struct volume_id *id /*,uint64_t off*/); 191 192 int FAST_FUNC volume_id_probe_linux_swap(struct volume_id *id /*,uint64_t off*/); 193 194 int FAST_FUNC volume_id_probe_luks(struct volume_id *id /*,uint64_t off*/); 195 196 //int FAST_FUNC volume_id_probe_mac_partition_map(struct volume_id *id /*,uint64_t off*/); 197 198 int FAST_FUNC volume_id_probe_minix(struct volume_id *id /*, uint64_t off*/); 199 200 //int FAST_FUNC volume_id_probe_msdos_part_table(struct volume_id *id /*,uint64_t off*/); 201 202 int FAST_FUNC volume_id_probe_f2fs(struct volume_id *id /*,uint64_t off*/); 203 204 int FAST_FUNC volume_id_probe_nilfs(struct volume_id *id /*,uint64_t off*/); 205 206 int FAST_FUNC volume_id_probe_ntfs(struct volume_id *id /*,uint64_t off*/); 207 208 int FAST_FUNC volume_id_probe_exfat(struct volume_id *id /*,uint64_t off*/); 209 210 int FAST_FUNC volume_id_probe_ocfs2(struct volume_id *id /*,uint64_t off*/); 211 212 int FAST_FUNC volume_id_probe_reiserfs(struct volume_id *id /*,uint64_t off*/); 213 214 int FAST_FUNC volume_id_probe_romfs(struct volume_id *id /*,uint64_t off*/); 215 216 int FAST_FUNC volume_id_probe_squashfs(struct volume_id *id /*,uint64_t off*/); 217 218 int FAST_FUNC volume_id_probe_erofs(struct volume_id *id /*,uint64_t off*/); 219 220 int FAST_FUNC volume_id_probe_sysv(struct volume_id *id /*,uint64_t off*/); 221 222 int FAST_FUNC volume_id_probe_udf(struct volume_id *id /*,uint64_t off*/); 223 224 //int FAST_FUNC volume_id_probe_ufs(struct volume_id *id /*,uint64_t off*/); 225 226 int FAST_FUNC volume_id_probe_xfs(struct volume_id *id /*,uint64_t off*/); 227 228 int FAST_FUNC volume_id_probe_ubifs(struct volume_id *id /*,uint64_t off*/); 229 230 POP_SAVED_FUNCTION_VISIBILITY 231