[2725] | 1 | /*
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| 2 | * volume_id - reads filesystem label and uuid
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| 3 | *
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| 4 | * Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
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| 5 | *
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| 6 | * This library is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU Lesser General Public
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| 8 | * License as published by the Free Software Foundation; either
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| 9 | * version 2.1 of the License, or (at your option) any later version.
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| 10 | *
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| 11 | * This library is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 14 | * Lesser General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU Lesser General Public
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| 17 | * License along with this library; if not, write to the Free Software
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| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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| 19 | */
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| 20 |
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| 21 | #include "libbb.h"
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| 22 | #include "volume_id.h"
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| 23 |
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| 24 | PUSH_AND_SET_FUNCTION_VISIBILITY_TO_HIDDEN
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| 25 |
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| 26 | #define dbg(...) ((void)0)
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| 27 | /* #define dbg(...) bb_error_msg(__VA_ARGS__) */
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| 28 |
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| 29 | /* volume_id.h */
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| 30 |
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| 31 | #define VOLUME_ID_VERSION 48
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| 32 |
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| 33 | #define VOLUME_ID_LABEL_SIZE 64
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| 34 | #define VOLUME_ID_UUID_SIZE 36
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| 35 | #define VOLUME_ID_FORMAT_SIZE 32
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| 36 | #define VOLUME_ID_PARTITIONS_MAX 256
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| 37 |
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| 38 | enum volume_id_usage {
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| 39 | VOLUME_ID_UNUSED,
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| 40 | VOLUME_ID_UNPROBED,
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| 41 | VOLUME_ID_OTHER,
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| 42 | VOLUME_ID_FILESYSTEM,
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| 43 | VOLUME_ID_PARTITIONTABLE,
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| 44 | VOLUME_ID_RAID,
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| 45 | VOLUME_ID_DISKLABEL,
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| 46 | VOLUME_ID_CRYPTO,
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| 47 | };
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| 48 |
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| 49 | #ifdef UNUSED_PARTITION_CODE
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| 50 | struct volume_id_partition {
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| 51 | // const char *type;
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| 52 | // const char *usage;
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| 53 | // smallint usage_id;
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| 54 | // uint8_t pt_type_raw;
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| 55 | // uint64_t pt_off;
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| 56 | // uint64_t pt_len;
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| 57 | };
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| 58 | #endif
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| 59 |
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| 60 | struct volume_id {
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| 61 | int fd;
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| 62 | // int fd_close:1;
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| 63 | int error;
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| 64 | size_t sbbuf_len;
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| 65 | size_t seekbuf_len;
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| 66 | uint8_t *sbbuf;
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| 67 | uint8_t *seekbuf;
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| 68 | uint64_t seekbuf_off;
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| 69 | #ifdef UNUSED_PARTITION_CODE
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| 70 | struct volume_id_partition *partitions;
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| 71 | size_t partition_count;
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| 72 | #endif
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| 73 | // uint8_t label_raw[VOLUME_ID_LABEL_SIZE];
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| 74 | // size_t label_raw_len;
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| 75 | char label[VOLUME_ID_LABEL_SIZE+1];
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| 76 | // uint8_t uuid_raw[VOLUME_ID_UUID_SIZE];
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| 77 | // size_t uuid_raw_len;
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| 78 | /* uuid is stored in ASCII (not binary) form here: */
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| 79 | char uuid[VOLUME_ID_UUID_SIZE+1];
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| 80 | // char type_version[VOLUME_ID_FORMAT_SIZE];
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| 81 | // smallint usage_id;
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| 82 | // const char *usage;
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[3232] | 83 | #if ENABLE_FEATURE_BLKID_TYPE
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| 84 | const char *type;
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| 85 | #endif
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[2725] | 86 | };
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| 87 |
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| 88 | struct volume_id* FAST_FUNC volume_id_open_node(int fd);
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| 89 | int FAST_FUNC volume_id_probe_all(struct volume_id *id, /*uint64_t off,*/ uint64_t size);
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| 90 | void FAST_FUNC free_volume_id(struct volume_id *id);
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| 91 |
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| 92 | /* util.h */
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| 93 |
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| 94 | /* size of superblock buffer, reiserfs block is at 64k */
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| 95 | #define SB_BUFFER_SIZE 0x11000
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| 96 | /* size of seek buffer, FAT cluster is 32k max */
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| 97 | #define SEEK_BUFFER_SIZE 0x10000
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| 98 |
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| 99 | #define bswap16(x) (uint16_t) ( \
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| 100 | (((uint16_t)(x) & 0x00ffu) << 8) | \
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| 101 | (((uint16_t)(x) & 0xff00u) >> 8))
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| 102 |
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| 103 | #define bswap32(x) (uint32_t) ( \
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| 104 | (((uint32_t)(x) & 0xff000000u) >> 24) | \
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| 105 | (((uint32_t)(x) & 0x00ff0000u) >> 8) | \
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| 106 | (((uint32_t)(x) & 0x0000ff00u) << 8) | \
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| 107 | (((uint32_t)(x) & 0x000000ffu) << 24))
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| 108 |
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| 109 | #define bswap64(x) (uint64_t) ( \
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| 110 | (((uint64_t)(x) & 0xff00000000000000ull) >> 56) | \
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| 111 | (((uint64_t)(x) & 0x00ff000000000000ull) >> 40) | \
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| 112 | (((uint64_t)(x) & 0x0000ff0000000000ull) >> 24) | \
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| 113 | (((uint64_t)(x) & 0x000000ff00000000ull) >> 8) | \
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| 114 | (((uint64_t)(x) & 0x00000000ff000000ull) << 8) | \
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| 115 | (((uint64_t)(x) & 0x0000000000ff0000ull) << 24) | \
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| 116 | (((uint64_t)(x) & 0x000000000000ff00ull) << 40) | \
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| 117 | (((uint64_t)(x) & 0x00000000000000ffull) << 56))
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| 118 |
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| 119 | #if BB_LITTLE_ENDIAN
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| 120 | #define le16_to_cpu(x) (x)
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| 121 | #define le32_to_cpu(x) (x)
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| 122 | #define le64_to_cpu(x) (x)
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| 123 | #define be16_to_cpu(x) bswap16(x)
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| 124 | #define be32_to_cpu(x) bswap32(x)
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| 125 | #define cpu_to_le16(x) (x)
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| 126 | #define cpu_to_le32(x) (x)
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| 127 | #define cpu_to_be32(x) bswap32(x)
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| 128 | #else
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| 129 | #define le16_to_cpu(x) bswap16(x)
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| 130 | #define le32_to_cpu(x) bswap32(x)
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| 131 | #define le64_to_cpu(x) bswap64(x)
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| 132 | #define be16_to_cpu(x) (x)
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| 133 | #define be32_to_cpu(x) (x)
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| 134 | #define cpu_to_le16(x) bswap16(x)
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| 135 | #define cpu_to_le32(x) bswap32(x)
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| 136 | #define cpu_to_be32(x) (x)
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| 137 | #endif
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| 138 |
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[3232] | 139 | /* volume_id_set_uuid(id,buf,fmt) assumes size of uuid buf
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| 140 | * by shifting: 4 << fmt, except for fmt == UUID_DCE_STRING.
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| 141 | * The constants below should match sizes.
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| 142 | */
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[2725] | 143 | enum uuid_format {
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[3232] | 144 | UUID_DOS = 0, /* 4 bytes */
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| 145 | UUID_NTFS = 1, /* 8 bytes */
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| 146 | UUID_DCE = 2, /* 16 bytes */
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| 147 | UUID_DCE_STRING = 3, /* 36 bytes (VOLUME_ID_UUID_SIZE) */
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[2725] | 148 | };
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| 149 |
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| 150 | enum endian {
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| 151 | LE = 0,
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| 152 | BE = 1
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| 153 | };
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| 154 |
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| 155 | void volume_id_set_unicode16(char *str, size_t len, const uint8_t *buf, enum endian endianess, size_t count);
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| 156 | //void volume_id_set_usage(struct volume_id *id, enum volume_id_usage usage_id);
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| 157 | //void volume_id_set_usage_part(struct volume_id_partition *part, enum volume_id_usage usage_id);
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| 158 | //void volume_id_set_label_raw(struct volume_id *id, const uint8_t *buf, size_t count);
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| 159 | void volume_id_set_label_string(struct volume_id *id, const uint8_t *buf, size_t count);
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| 160 | void volume_id_set_label_unicode16(struct volume_id *id, const uint8_t *buf, enum endian endianess, size_t count);
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| 161 | void volume_id_set_uuid(struct volume_id *id, const uint8_t *buf, enum uuid_format format);
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| 162 | void *volume_id_get_buffer(struct volume_id *id, uint64_t off, size_t len);
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| 163 | void volume_id_free_buffer(struct volume_id *id);
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| 164 |
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| 165 |
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| 166 | /* Probe routines */
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| 167 |
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| 168 | /* RAID */
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| 169 |
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| 170 | //int FAST_FUNC volume_id_probe_highpoint_37x_raid(struct volume_id *id /*,uint64_t off*/);
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| 171 | //int FAST_FUNC volume_id_probe_highpoint_45x_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
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| 172 |
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| 173 | //int FAST_FUNC volume_id_probe_intel_software_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
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| 174 |
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| 175 | int FAST_FUNC volume_id_probe_linux_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
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| 176 |
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| 177 | //int FAST_FUNC volume_id_probe_lsi_mega_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
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| 178 |
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| 179 | //int FAST_FUNC volume_id_probe_nvidia_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
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| 180 |
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| 181 | //int FAST_FUNC volume_id_probe_promise_fasttrack_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
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| 182 |
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| 183 | //int FAST_FUNC volume_id_probe_silicon_medley_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
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| 184 |
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| 185 | //int FAST_FUNC volume_id_probe_via_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
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| 186 |
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| 187 | //int FAST_FUNC volume_id_probe_lvm1(struct volume_id *id /*,uint64_t off*/);
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| 188 | //int FAST_FUNC volume_id_probe_lvm2(struct volume_id *id /*,uint64_t off*/);
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| 189 |
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| 190 | /* FS */
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| 191 |
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| 192 | int FAST_FUNC volume_id_probe_btrfs(struct volume_id *id /*,uint64_t off*/);
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| 193 |
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| 194 | int FAST_FUNC volume_id_probe_cramfs(struct volume_id *id /*,uint64_t off*/);
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| 195 |
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| 196 | int FAST_FUNC volume_id_probe_ext(struct volume_id *id /*,uint64_t off*/);
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| 197 |
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| 198 | int FAST_FUNC volume_id_probe_vfat(struct volume_id *id /*,uint64_t off*/);
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| 199 |
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| 200 | int FAST_FUNC volume_id_probe_hfs_hfsplus(struct volume_id *id /*,uint64_t off*/);
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| 201 |
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| 202 | //int FAST_FUNC volume_id_probe_hpfs(struct volume_id *id /*,uint64_t off*/);
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| 203 |
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| 204 | int FAST_FUNC volume_id_probe_iso9660(struct volume_id *id /*,uint64_t off*/);
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| 205 |
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| 206 | int FAST_FUNC volume_id_probe_jfs(struct volume_id *id /*,uint64_t off*/);
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| 207 |
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| 208 | int FAST_FUNC volume_id_probe_linux_swap(struct volume_id *id /*,uint64_t off*/);
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| 209 |
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| 210 | int FAST_FUNC volume_id_probe_luks(struct volume_id *id /*,uint64_t off*/);
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| 211 |
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| 212 | //int FAST_FUNC volume_id_probe_mac_partition_map(struct volume_id *id /*,uint64_t off*/);
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| 213 |
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| 214 | //int FAST_FUNC volume_id_probe_minix(struct volume_id *id /*,uint64_t off*/);
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| 215 |
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| 216 | //int FAST_FUNC volume_id_probe_msdos_part_table(struct volume_id *id /*,uint64_t off*/);
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| 217 |
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[3232] | 218 | int FAST_FUNC volume_id_probe_nilfs(struct volume_id *id /*,uint64_t off*/);
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| 219 |
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[2725] | 220 | int FAST_FUNC volume_id_probe_ntfs(struct volume_id *id /*,uint64_t off*/);
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| 221 |
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[3232] | 222 | int FAST_FUNC volume_id_probe_exfat(struct volume_id *id /*,uint64_t off*/);
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| 223 |
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[2725] | 224 | int FAST_FUNC volume_id_probe_ocfs2(struct volume_id *id /*,uint64_t off*/);
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| 225 |
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| 226 | int FAST_FUNC volume_id_probe_reiserfs(struct volume_id *id /*,uint64_t off*/);
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| 227 |
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| 228 | int FAST_FUNC volume_id_probe_romfs(struct volume_id *id /*,uint64_t off*/);
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| 229 |
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[3232] | 230 | int FAST_FUNC volume_id_probe_squashfs(struct volume_id *id /*,uint64_t off*/);
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| 231 |
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[2725] | 232 | int FAST_FUNC volume_id_probe_sysv(struct volume_id *id /*,uint64_t off*/);
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| 233 |
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| 234 | int FAST_FUNC volume_id_probe_udf(struct volume_id *id /*,uint64_t off*/);
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| 235 |
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| 236 | //int FAST_FUNC volume_id_probe_ufs(struct volume_id *id /*,uint64_t off*/);
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| 237 |
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| 238 | int FAST_FUNC volume_id_probe_xfs(struct volume_id *id /*,uint64_t off*/);
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| 239 |
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| 240 | POP_SAVED_FUNCTION_VISIBILITY
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