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221 lines
6.7 KiB
C
221 lines
6.7 KiB
C
/*
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* volume_id - reads filesystem label and uuid
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*
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* Copyright (C) 2005 Kay Sievers <kay.sievers@vrfy.org>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "libbb.h"
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#include "volume_id.h"
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#define dbg(...) ((void)0)
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/* volume_id.h */
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#define VOLUME_ID_VERSION 48
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#define VOLUME_ID_LABEL_SIZE 64
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#define VOLUME_ID_UUID_SIZE 36
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#define VOLUME_ID_FORMAT_SIZE 32
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#define VOLUME_ID_PARTITIONS_MAX 256
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enum volume_id_usage {
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VOLUME_ID_UNUSED,
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VOLUME_ID_UNPROBED,
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VOLUME_ID_OTHER,
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VOLUME_ID_FILESYSTEM,
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VOLUME_ID_PARTITIONTABLE,
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VOLUME_ID_RAID,
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VOLUME_ID_DISKLABEL,
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VOLUME_ID_CRYPTO,
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};
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struct volume_id_partition {
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enum volume_id_usage usage_id;
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const char *usage;
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const char *type;
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uint64_t off;
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uint64_t len;
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uint8_t partition_type_raw;
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};
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struct volume_id {
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uint8_t label_raw[VOLUME_ID_LABEL_SIZE];
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size_t label_raw_len;
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char label[VOLUME_ID_LABEL_SIZE+1];
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uint8_t uuid_raw[VOLUME_ID_UUID_SIZE];
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size_t uuid_raw_len;
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char uuid[VOLUME_ID_UUID_SIZE+1];
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enum volume_id_usage usage_id;
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const char *usage;
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const char *type;
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char type_version[VOLUME_ID_FORMAT_SIZE];
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struct volume_id_partition *partitions;
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size_t partition_count;
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int fd;
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uint8_t *sbbuf;
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uint8_t *seekbuf;
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size_t sbbuf_len;
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uint64_t seekbuf_off;
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size_t seekbuf_len;
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// int fd_close:1;
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};
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struct volume_id *volume_id_open_node(const char *path);
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int volume_id_probe_all(struct volume_id *id, uint64_t off, uint64_t size);
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void free_volume_id(struct volume_id *id);
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/* util.h */
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/* size of superblock buffer, reiserfs block is at 64k */
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#define SB_BUFFER_SIZE 0x11000
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/* size of seek buffer, FAT cluster is 32k max */
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#define SEEK_BUFFER_SIZE 0x10000
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#define bswap16(x) (uint16_t) ( \
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(((uint16_t)(x) & 0x00ffu) << 8) | \
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(((uint16_t)(x) & 0xff00u) >> 8))
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#define bswap32(x) (uint32_t) ( \
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(((uint32_t)(x) & 0xff000000u) >> 24) | \
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(((uint32_t)(x) & 0x00ff0000u) >> 8) | \
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(((uint32_t)(x) & 0x0000ff00u) << 8) | \
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(((uint32_t)(x) & 0x000000ffu) << 24))
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#define bswap64(x) (uint64_t) ( \
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(((uint64_t)(x) & 0xff00000000000000ull) >> 56) | \
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(((uint64_t)(x) & 0x00ff000000000000ull) >> 40) | \
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(((uint64_t)(x) & 0x0000ff0000000000ull) >> 24) | \
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(((uint64_t)(x) & 0x000000ff00000000ull) >> 8) | \
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(((uint64_t)(x) & 0x00000000ff000000ull) << 8) | \
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(((uint64_t)(x) & 0x0000000000ff0000ull) << 24) | \
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(((uint64_t)(x) & 0x000000000000ff00ull) << 40) | \
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(((uint64_t)(x) & 0x00000000000000ffull) << 56))
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#if BB_LITTLE_ENDIAN
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#define le16_to_cpu(x) (x)
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#define le32_to_cpu(x) (x)
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#define le64_to_cpu(x) (x)
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#define be16_to_cpu(x) bswap16(x)
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#define be32_to_cpu(x) bswap32(x)
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#define cpu_to_le16(x) (x)
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#define cpu_to_le32(x) (x)
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#define cpu_to_be32(x) bswap32(x)
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#else
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#define le16_to_cpu(x) bswap16(x)
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#define le32_to_cpu(x) bswap32(x)
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#define le64_to_cpu(x) bswap64(x)
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#define be16_to_cpu(x) (x)
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#define be32_to_cpu(x) (x)
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#define cpu_to_le16(x) bswap16(x)
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#define cpu_to_le32(x) bswap32(x)
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#define cpu_to_be32(x) (x)
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#endif
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enum uuid_format {
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UUID_DCE_STRING,
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UUID_DCE,
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UUID_DOS,
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UUID_NTFS,
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UUID_HFS,
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};
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enum endian {
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LE = 0,
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BE = 1
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};
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void volume_id_set_unicode16(char *str, size_t len, const uint8_t *buf, enum endian endianess, size_t count);
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void volume_id_set_usage(struct volume_id *id, enum volume_id_usage usage_id);
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void volume_id_set_usage_part(struct volume_id_partition *part, enum volume_id_usage usage_id);
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void volume_id_set_label_raw(struct volume_id *id, const uint8_t *buf, size_t count);
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void volume_id_set_label_string(struct volume_id *id, const uint8_t *buf, size_t count);
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void volume_id_set_label_unicode16(struct volume_id *id, const uint8_t *buf, enum endian endianess, size_t count);
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void volume_id_set_uuid(struct volume_id *id, const uint8_t *buf, enum uuid_format format);
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void *volume_id_get_buffer(struct volume_id *id, uint64_t off, size_t len);
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void volume_id_free_buffer(struct volume_id *id);
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/* Probe routines */
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/* RAID */
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int volume_id_probe_highpoint_37x_raid(struct volume_id *id, uint64_t off);
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int volume_id_probe_highpoint_45x_raid(struct volume_id *id, uint64_t off, uint64_t size);
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int volume_id_probe_intel_software_raid(struct volume_id *id, uint64_t off, uint64_t size);
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int volume_id_probe_linux_raid(struct volume_id *id, uint64_t off, uint64_t size);
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int volume_id_probe_lsi_mega_raid(struct volume_id *id, uint64_t off, uint64_t size);
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int volume_id_probe_nvidia_raid(struct volume_id *id, uint64_t off, uint64_t size);
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int volume_id_probe_promise_fasttrack_raid(struct volume_id *id, uint64_t off, uint64_t size);
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int volume_id_probe_silicon_medley_raid(struct volume_id *id, uint64_t off, uint64_t size);
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int volume_id_probe_via_raid(struct volume_id *id, uint64_t off, uint64_t size);
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int volume_id_probe_lvm1(struct volume_id *id, uint64_t off);
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int volume_id_probe_lvm2(struct volume_id *id, uint64_t off);
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/* FS */
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int volume_id_probe_cramfs(struct volume_id *id, uint64_t off);
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int volume_id_probe_ext(struct volume_id *id, uint64_t off);
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int volume_id_probe_vfat(struct volume_id *id, uint64_t off);
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int volume_id_probe_hfs_hfsplus(struct volume_id *id, uint64_t off);
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int volume_id_probe_hpfs(struct volume_id *id, uint64_t off);
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int volume_id_probe_iso9660(struct volume_id *id, uint64_t off);
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int volume_id_probe_jfs(struct volume_id *id, uint64_t off);
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int volume_id_probe_linux_swap(struct volume_id *id, uint64_t off);
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int volume_id_probe_luks(struct volume_id *id, uint64_t off);
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int volume_id_probe_mac_partition_map(struct volume_id *id, uint64_t off);
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int volume_id_probe_minix(struct volume_id *id, uint64_t off);
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int volume_id_probe_msdos_part_table(struct volume_id *id, uint64_t off);
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int volume_id_probe_ntfs(struct volume_id *id, uint64_t off);
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int volume_id_probe_ocfs2(struct volume_id *id, uint64_t off);
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int volume_id_probe_reiserfs(struct volume_id *id, uint64_t off);
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int volume_id_probe_romfs(struct volume_id *id, uint64_t off);
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int volume_id_probe_sysv(struct volume_id *id, uint64_t off);
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int volume_id_probe_udf(struct volume_id *id, uint64_t off);
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int volume_id_probe_ufs(struct volume_id *id, uint64_t off);
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int volume_id_probe_xfs(struct volume_id *id, uint64_t off);
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