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    Contents of /trunk/mkinitrd-magellan/busybox/util-linux/volume_id/volume_id_internal.h

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    Revision 984 - (show annotations) (download)
    Sun May 30 11:32:42 2010 UTC (13 years, 11 months ago) by niro
    File MIME type: text/plain
    File size: 7727 byte(s) 
    -updated to busybox-1.16.1 and enabled blkid/uuid support in default config
    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 #ifdef UNUSED_PARTITION_CODE
    70 struct volume_id_partition *partitions;
    71 size_t partition_count;
    72 #endif
    73 // uint8_t label_raw[VOLUME_ID_LABEL_SIZE];
    74 // size_t label_raw_len;
    75 char label[VOLUME_ID_LABEL_SIZE+1];
    76 // uint8_t uuid_raw[VOLUME_ID_UUID_SIZE];
    77 // size_t uuid_raw_len;
    78 /* uuid is stored in ASCII (not binary) form here: */
    79 char uuid[VOLUME_ID_UUID_SIZE+1];
    80 // char type_version[VOLUME_ID_FORMAT_SIZE];
    81 // smallint usage_id;
    82 // const char *usage;
    83 // const char *type;
    84 };
    85
    86 struct volume_id* FAST_FUNC volume_id_open_node(int fd);
    87 int FAST_FUNC volume_id_probe_all(struct volume_id *id, /*uint64_t off,*/ uint64_t size);
    88 void FAST_FUNC free_volume_id(struct volume_id *id);
    89
    90 /* util.h */
    91
    92 /* size of superblock buffer, reiserfs block is at 64k */
    93 #define SB_BUFFER_SIZE 0x11000
    94 /* size of seek buffer, FAT cluster is 32k max */
    95 #define SEEK_BUFFER_SIZE 0x10000
    96
    97 #define bswap16(x) (uint16_t) ( \
    98 (((uint16_t)(x) & 0x00ffu) << 8) | \
    99 (((uint16_t)(x) & 0xff00u) >> 8))
    100
    101 #define bswap32(x) (uint32_t) ( \
    102 (((uint32_t)(x) & 0xff000000u) >> 24) | \
    103 (((uint32_t)(x) & 0x00ff0000u) >> 8) | \
    104 (((uint32_t)(x) & 0x0000ff00u) << 8) | \
    105 (((uint32_t)(x) & 0x000000ffu) << 24))
    106
    107 #define bswap64(x) (uint64_t) ( \
    108 (((uint64_t)(x) & 0xff00000000000000ull) >> 56) | \
    109 (((uint64_t)(x) & 0x00ff000000000000ull) >> 40) | \
    110 (((uint64_t)(x) & 0x0000ff0000000000ull) >> 24) | \
    111 (((uint64_t)(x) & 0x000000ff00000000ull) >> 8) | \
    112 (((uint64_t)(x) & 0x00000000ff000000ull) << 8) | \
    113 (((uint64_t)(x) & 0x0000000000ff0000ull) << 24) | \
    114 (((uint64_t)(x) & 0x000000000000ff00ull) << 40) | \
    115 (((uint64_t)(x) & 0x00000000000000ffull) << 56))
    116
    117 #if BB_LITTLE_ENDIAN
    118 #define le16_to_cpu(x) (x)
    119 #define le32_to_cpu(x) (x)
    120 #define le64_to_cpu(x) (x)
    121 #define be16_to_cpu(x) bswap16(x)
    122 #define be32_to_cpu(x) bswap32(x)
    123 #define cpu_to_le16(x) (x)
    124 #define cpu_to_le32(x) (x)
    125 #define cpu_to_be32(x) bswap32(x)
    126 #else
    127 #define le16_to_cpu(x) bswap16(x)
    128 #define le32_to_cpu(x) bswap32(x)
    129 #define le64_to_cpu(x) bswap64(x)
    130 #define be16_to_cpu(x) (x)
    131 #define be32_to_cpu(x) (x)
    132 #define cpu_to_le16(x) bswap16(x)
    133 #define cpu_to_le32(x) bswap32(x)
    134 #define cpu_to_be32(x) (x)
    135 #endif
    136
    137 enum uuid_format {
    138 UUID_DCE_STRING,
    139 UUID_DCE,
    140 UUID_DOS,
    141 UUID_NTFS,
    142 UUID_HFS,
    143 };
    144
    145 enum endian {
    146 LE = 0,
    147 BE = 1
    148 };
    149
    150 void volume_id_set_unicode16(char *str, size_t len, const uint8_t *buf, enum endian endianess, size_t count);
    151 //void volume_id_set_usage(struct volume_id *id, enum volume_id_usage usage_id);
    152 //void volume_id_set_usage_part(struct volume_id_partition *part, enum volume_id_usage usage_id);
    153 //void volume_id_set_label_raw(struct volume_id *id, const uint8_t *buf, size_t count);
    154 void volume_id_set_label_string(struct volume_id *id, const uint8_t *buf, size_t count);
    155 void volume_id_set_label_unicode16(struct volume_id *id, const uint8_t *buf, enum endian endianess, size_t count);
    156 void volume_id_set_uuid(struct volume_id *id, const uint8_t *buf, enum uuid_format format);
    157 void *volume_id_get_buffer(struct volume_id *id, uint64_t off, size_t len);
    158 void volume_id_free_buffer(struct volume_id *id);
    159
    160
    161 /* Probe routines */
    162
    163 /* RAID */
    164
    165 //int FAST_FUNC volume_id_probe_highpoint_37x_raid(struct volume_id *id /*,uint64_t off*/);
    166 //int FAST_FUNC volume_id_probe_highpoint_45x_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
    167
    168 //int FAST_FUNC volume_id_probe_intel_software_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
    169
    170 int FAST_FUNC volume_id_probe_linux_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
    171
    172 //int FAST_FUNC volume_id_probe_lsi_mega_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
    173
    174 //int FAST_FUNC volume_id_probe_nvidia_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
    175
    176 //int FAST_FUNC volume_id_probe_promise_fasttrack_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
    177
    178 //int FAST_FUNC volume_id_probe_silicon_medley_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
    179
    180 //int FAST_FUNC volume_id_probe_via_raid(struct volume_id *id /*,uint64_t off*/, uint64_t size);
    181
    182 //int FAST_FUNC volume_id_probe_lvm1(struct volume_id *id /*,uint64_t off*/);
    183 //int FAST_FUNC volume_id_probe_lvm2(struct volume_id *id /*,uint64_t off*/);
    184
    185 /* FS */
    186
    187 int FAST_FUNC volume_id_probe_btrfs(struct volume_id *id /*,uint64_t off*/);
    188
    189 int FAST_FUNC volume_id_probe_cramfs(struct volume_id *id /*,uint64_t off*/);
    190
    191 int FAST_FUNC volume_id_probe_ext(struct volume_id *id /*,uint64_t off*/);
    192
    193 int FAST_FUNC volume_id_probe_vfat(struct volume_id *id /*,uint64_t off*/);
    194
    195 int FAST_FUNC volume_id_probe_hfs_hfsplus(struct volume_id *id /*,uint64_t off*/);
    196
    197 //int FAST_FUNC volume_id_probe_hpfs(struct volume_id *id /*,uint64_t off*/);
    198
    199 int FAST_FUNC volume_id_probe_iso9660(struct volume_id *id /*,uint64_t off*/);
    200
    201 int FAST_FUNC volume_id_probe_jfs(struct volume_id *id /*,uint64_t off*/);
    202
    203 int FAST_FUNC volume_id_probe_linux_swap(struct volume_id *id /*,uint64_t off*/);
    204
    205 int FAST_FUNC volume_id_probe_luks(struct volume_id *id /*,uint64_t off*/);
    206
    207 //int FAST_FUNC volume_id_probe_mac_partition_map(struct volume_id *id /*,uint64_t off*/);
    208
    209 //int FAST_FUNC volume_id_probe_minix(struct volume_id *id /*,uint64_t off*/);
    210
    211 //int FAST_FUNC volume_id_probe_msdos_part_table(struct volume_id *id /*,uint64_t off*/);
    212
    213 int FAST_FUNC volume_id_probe_ntfs(struct volume_id *id /*,uint64_t off*/);
    214
    215 int FAST_FUNC volume_id_probe_ocfs2(struct volume_id *id /*,uint64_t off*/);
    216
    217 int FAST_FUNC volume_id_probe_reiserfs(struct volume_id *id /*,uint64_t off*/);
    218
    219 int FAST_FUNC volume_id_probe_romfs(struct volume_id *id /*,uint64_t off*/);
    220
    221 int FAST_FUNC volume_id_probe_sysv(struct volume_id *id /*,uint64_t off*/);
    222
    223 int FAST_FUNC volume_id_probe_udf(struct volume_id *id /*,uint64_t off*/);
    224
    225 //int FAST_FUNC volume_id_probe_ufs(struct volume_id *id /*,uint64_t off*/);
    226
    227 int FAST_FUNC volume_id_probe_xfs(struct volume_id *id /*,uint64_t off*/);
    228
    229 POP_SAVED_FUNCTION_VISIBILITY