mirror of https://github.com/vitalif/e2fsprogs
637 lines
16 KiB
C
637 lines
16 KiB
C
/*
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* probe.h - constants and on-disk structures for extracting device data
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*
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* Copyright (C) 1999 by Andries Brouwer
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* Copyright (C) 1999, 2000, 2003 by Theodore Ts'o
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* Copyright (C) 2001 by Andreas Dilger
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the
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* GNU Lesser General Public License.
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* %End-Header%
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*/
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#ifndef _BLKID_PROBE_H
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#define _BLKID_PROBE_H
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#include <blkid/blkid_types.h>
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struct blkid_magic;
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#define SB_BUFFER_SIZE 0x11000
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struct blkid_probe {
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int fd;
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blkid_cache cache;
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blkid_dev dev;
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unsigned char *sbbuf;
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size_t sb_valid;
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unsigned char *buf;
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size_t buf_max;
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};
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typedef int (*blkid_probe_t)(struct blkid_probe *probe,
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struct blkid_magic *id, unsigned char *buf);
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struct blkid_magic {
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const char *bim_type; /* type name for this magic */
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long bim_kboff; /* kilobyte offset of superblock */
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unsigned bim_sboff; /* byte offset within superblock */
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unsigned bim_len; /* length of magic */
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const char *bim_magic; /* magic string */
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blkid_probe_t bim_probe; /* probe function */
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};
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/*
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* Structures for each of the content types we want to extract information
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* from. We do not necessarily need the magic field here, because we have
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* already identified the content type before we get this far. It may still
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* be useful if there are probe functions which handle multiple content types.
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*/
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struct ext2_super_block {
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__u32 s_inodes_count;
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__u32 s_blocks_count;
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__u32 s_r_blocks_count;
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__u32 s_free_blocks_count;
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__u32 s_free_inodes_count;
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__u32 s_first_data_block;
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__u32 s_log_block_size;
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__u32 s_dummy3[7];
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unsigned char s_magic[2];
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__u16 s_state;
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__u32 s_dummy5[8];
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__u32 s_feature_compat;
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__u32 s_feature_incompat;
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__u32 s_feature_ro_compat;
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unsigned char s_uuid[16];
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char s_volume_name[16];
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char s_last_mounted[64];
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__u32 s_algorithm_usage_bitmap;
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__u8 s_prealloc_blocks;
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__u8 s_prealloc_dir_blocks;
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__u16 s_reserved_gdt_blocks;
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__u8 s_journal_uuid[16];
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__u32 s_journal_inum;
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__u32 s_journal_dev;
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__u32 s_last_orphan;
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__u32 s_hash_seed[4];
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__u8 s_def_hash_version;
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__u8 s_jnl_backup_type;
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__u16 s_reserved_word_pad;
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__u32 s_default_mount_opts;
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__u32 s_first_meta_bg;
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__u32 s_mkfs_time;
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__u32 s_jnl_blocks[17];
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__u32 s_blocks_count_hi;
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__u32 s_r_blocks_count_hi;
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__u32 s_free_blocks_hi;
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__u16 s_min_extra_isize;
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__u16 s_want_extra_isize;
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__u32 s_flags;
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__u16 s_raid_stride;
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__u16 s_mmp_interval;
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__u64 s_mmp_block;
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__u32 s_raid_stripe_width;
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__u32 s_reserved[163];
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};
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/* for s_flags */
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#define EXT2_FLAGS_TEST_FILESYS 0x0004
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/* for s_feature_compat */
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#define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004
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/* for s_feature_ro_compat */
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#define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001
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#define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002
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#define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004
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#define EXT4_FEATURE_RO_COMPAT_HUGE_FILE 0x0008
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#define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010
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#define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020
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#define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040
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/* for s_feature_incompat */
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#define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002
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#define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004
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#define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008
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#define EXT2_FEATURE_INCOMPAT_META_BG 0x0010
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#define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040 /* extents support */
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#define EXT4_FEATURE_INCOMPAT_64BIT 0x0080
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#define EXT4_FEATURE_INCOMPAT_MMP 0x0100
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#define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200
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#define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
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EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
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EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
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#define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
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EXT2_FEATURE_INCOMPAT_META_BG)
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#define EXT2_FEATURE_INCOMPAT_UNSUPPORTED ~EXT2_FEATURE_INCOMPAT_SUPP
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#define EXT2_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT2_FEATURE_RO_COMPAT_SUPP
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#define EXT3_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \
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EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \
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EXT2_FEATURE_RO_COMPAT_BTREE_DIR)
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#define EXT3_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \
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EXT3_FEATURE_INCOMPAT_RECOVER| \
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EXT2_FEATURE_INCOMPAT_META_BG)
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#define EXT3_FEATURE_INCOMPAT_UNSUPPORTED ~EXT3_FEATURE_INCOMPAT_SUPP
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#define EXT3_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT3_FEATURE_RO_COMPAT_SUPP
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struct xfs_super_block {
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unsigned char xs_magic[4];
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__u32 xs_blocksize;
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__u64 xs_dblocks;
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__u64 xs_rblocks;
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__u32 xs_dummy1[2];
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unsigned char xs_uuid[16];
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__u32 xs_dummy2[15];
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char xs_fname[12];
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__u32 xs_dummy3[2];
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__u64 xs_icount;
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__u64 xs_ifree;
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__u64 xs_fdblocks;
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};
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struct reiserfs_super_block {
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__u32 rs_blocks_count;
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__u32 rs_free_blocks;
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__u32 rs_root_block;
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__u32 rs_journal_block;
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__u32 rs_journal_dev;
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__u32 rs_orig_journal_size;
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__u32 rs_dummy2[5];
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__u16 rs_blocksize;
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__u16 rs_dummy3[3];
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unsigned char rs_magic[12];
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__u32 rs_dummy4[5];
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unsigned char rs_uuid[16];
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char rs_label[16];
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};
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struct reiser4_super_block {
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unsigned char rs4_magic[16];
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__u16 rs4_dummy[2];
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unsigned char rs4_uuid[16];
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unsigned char rs4_label[16];
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__u64 rs4_dummy2;
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};
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struct jfs_super_block {
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unsigned char js_magic[4];
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__u32 js_version;
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__u64 js_size;
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__u32 js_bsize;
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__u32 js_dummy1;
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__u32 js_pbsize;
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__u32 js_dummy2[27];
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unsigned char js_uuid[16];
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unsigned char js_label[16];
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unsigned char js_loguuid[16];
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};
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struct romfs_super_block {
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unsigned char ros_magic[8];
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__u32 ros_dummy1[2];
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unsigned char ros_volume[16];
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};
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struct cramfs_super_block {
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__u8 magic[4];
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__u32 size;
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__u32 flags;
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__u32 future;
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__u8 signature[16];
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struct cramfs_info {
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__u32 crc;
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__u32 edition;
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__u32 blocks;
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__u32 files;
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} info;
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__u8 name[16];
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};
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struct swap_id_block {
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/* unsigned char sws_boot[1024]; */
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__u32 sws_version;
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__u32 sws_lastpage;
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__u32 sws_nrbad;
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unsigned char sws_uuid[16];
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char sws_volume[16];
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unsigned char sws_pad[117];
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__u32 sws_badpg;
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};
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/* Yucky misaligned values */
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struct vfat_super_block {
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/* 00*/ unsigned char vs_ignored[3];
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/* 03*/ unsigned char vs_sysid[8];
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/* 0b*/ unsigned char vs_sector_size[2];
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/* 0d*/ __u8 vs_cluster_size;
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/* 0e*/ __u16 vs_reserved;
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/* 10*/ __u8 vs_fats;
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/* 11*/ unsigned char vs_dir_entries[2];
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/* 13*/ unsigned char vs_sectors[2];
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/* 15*/ unsigned char vs_media;
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/* 16*/ __u16 vs_fat_length;
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/* 18*/ __u16 vs_secs_track;
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/* 1a*/ __u16 vs_heads;
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/* 1c*/ __u32 vs_hidden;
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/* 20*/ __u32 vs_total_sect;
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/* 24*/ __u32 vs_fat32_length;
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/* 28*/ __u16 vs_flags;
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/* 2a*/ __u8 vs_version[2];
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/* 2c*/ __u32 vs_root_cluster;
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/* 30*/ __u16 vs_insfo_sector;
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/* 32*/ __u16 vs_backup_boot;
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/* 34*/ __u16 vs_reserved2[6];
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/* 40*/ unsigned char vs_unknown[3];
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/* 43*/ unsigned char vs_serno[4];
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/* 47*/ unsigned char vs_label[11];
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/* 52*/ unsigned char vs_magic[8];
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/* 5a*/ unsigned char vs_dummy2[164];
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/*1fe*/ unsigned char vs_pmagic[2];
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};
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/* Yucky misaligned values */
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struct msdos_super_block {
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/* 00*/ unsigned char ms_ignored[3];
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/* 03*/ unsigned char ms_sysid[8];
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/* 0b*/ unsigned char ms_sector_size[2];
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/* 0d*/ __u8 ms_cluster_size;
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/* 0e*/ __u16 ms_reserved;
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/* 10*/ __u8 ms_fats;
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/* 11*/ unsigned char ms_dir_entries[2];
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/* 13*/ unsigned char ms_sectors[2];
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/* 15*/ unsigned char ms_media;
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/* 16*/ __u16 ms_fat_length;
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/* 18*/ __u16 ms_secs_track;
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/* 1a*/ __u16 ms_heads;
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/* 1c*/ __u32 ms_hidden;
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/* 20*/ __u32 ms_total_sect;
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/* 24*/ unsigned char ms_unknown[3];
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/* 27*/ unsigned char ms_serno[4];
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/* 2b*/ unsigned char ms_label[11];
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/* 36*/ unsigned char ms_magic[8];
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/* 3d*/ unsigned char ms_dummy2[192];
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/*1fe*/ unsigned char ms_pmagic[2];
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};
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struct vfat_dir_entry {
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__u8 name[11];
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__u8 attr;
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__u16 time_creat;
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__u16 date_creat;
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__u16 time_acc;
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__u16 date_acc;
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__u16 cluster_high;
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__u16 time_write;
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__u16 date_write;
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__u16 cluster_low;
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__u32 size;
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};
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/* maximum number of clusters */
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#define FAT12_MAX 0xFF4
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#define FAT16_MAX 0xFFF4
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#define FAT32_MAX 0x0FFFFFF6
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struct minix_super_block {
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__u16 ms_ninodes;
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__u16 ms_nzones;
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__u16 ms_imap_blocks;
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__u16 ms_zmap_blocks;
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__u16 ms_firstdatazone;
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__u16 ms_log_zone_size;
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__u32 ms_max_size;
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unsigned char ms_magic[2];
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__u16 ms_state;
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__u32 ms_zones;
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};
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struct mdp_superblock_s {
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__u32 md_magic;
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__u32 major_version;
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__u32 minor_version;
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__u32 patch_version;
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__u32 gvalid_words;
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__u32 set_uuid0;
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__u32 ctime;
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__u32 level;
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__u32 size;
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__u32 nr_disks;
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__u32 raid_disks;
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__u32 md_minor;
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__u32 not_persistent;
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__u32 set_uuid1;
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__u32 set_uuid2;
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__u32 set_uuid3;
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};
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struct hfs_super_block {
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char h_magic[2];
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char h_dummy[18];
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__u32 h_blksize;
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};
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struct ocfs_volume_header {
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unsigned char minor_version[4];
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unsigned char major_version[4];
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unsigned char signature[128];
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char mount[128];
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unsigned char mount_len[2];
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};
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struct ocfs_volume_label {
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unsigned char disk_lock[48];
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char label[64];
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unsigned char label_len[2];
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unsigned char vol_id[16];
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unsigned char vol_id_len[2];
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};
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#define ocfsmajor(o) ((__u32)o.major_version[0] \
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+ (((__u32) o.major_version[1]) << 8) \
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+ (((__u32) o.major_version[2]) << 16) \
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+ (((__u32) o.major_version[3]) << 24))
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#define ocfslabellen(o) ((__u32)o.label_len[0] + (((__u32) o.label_len[1]) << 8))
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#define ocfsmountlen(o) ((__u32)o.mount_len[0] + (((__u32) o.mount_len[1])<<8))
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#define OCFS_MAGIC "OracleCFS"
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struct ocfs2_super_block {
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unsigned char signature[8];
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unsigned char s_dummy1[184];
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unsigned char s_dummy2[80];
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char s_label[64];
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unsigned char s_uuid[16];
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};
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#define OCFS2_MIN_BLOCKSIZE 512
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#define OCFS2_MAX_BLOCKSIZE 4096
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#define OCFS2_SUPER_BLOCK_BLKNO 2
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#define OCFS2_SUPER_BLOCK_SIGNATURE "OCFSV2"
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struct oracle_asm_disk_label {
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char dummy[32];
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char dl_tag[8];
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char dl_id[24];
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};
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#define ORACLE_ASM_DISK_LABEL_MARKED "ORCLDISK"
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#define ORACLE_ASM_DISK_LABEL_OFFSET 32
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struct iso_volume_descriptor {
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unsigned char vd_type;
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unsigned char vd_id[5];
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unsigned char vd_version;
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unsigned char flags;
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unsigned char system_id[32];
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unsigned char volume_id[32];
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unsigned char unused[8];
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unsigned char space_size[8];
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unsigned char escape_sequences[8];
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};
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/* Common gfs/gfs2 constants: */
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#define GFS_MAGIC 0x01161970
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#define GFS_DEFAULT_BSIZE 4096
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#define GFS_SUPERBLOCK_OFFSET (0x10 * GFS_DEFAULT_BSIZE)
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#define GFS_METATYPE_SB 1
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#define GFS_FORMAT_SB 100
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#define GFS_LOCKNAME_LEN 64
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/* gfs1 constants: */
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#define GFS_FORMAT_FS 1309
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#define GFS_FORMAT_MULTI 1401
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/* gfs2 constants: */
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#define GFS2_FORMAT_FS 1801
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#define GFS2_FORMAT_MULTI 1900
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struct gfs2_meta_header {
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__u32 mh_magic;
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__u32 mh_type;
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__u64 __pad0; /* Was generation number in gfs1 */
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__u32 mh_format;
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__u32 __pad1; /* Was incarnation number in gfs1 */
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};
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struct gfs2_inum {
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__u64 no_formal_ino;
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__u64 no_addr;
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};
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struct gfs2_sb {
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struct gfs2_meta_header sb_header;
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__u32 sb_fs_format;
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__u32 sb_multihost_format;
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__u32 __pad0; /* Was superblock flags in gfs1 */
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__u32 sb_bsize;
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__u32 sb_bsize_shift;
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__u32 __pad1; /* Was journal segment size in gfs1 */
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struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */
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struct gfs2_inum __pad2; /* Was rindex dinode in gfs1 */
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struct gfs2_inum sb_root_dir;
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char sb_lockproto[GFS_LOCKNAME_LEN];
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char sb_locktable[GFS_LOCKNAME_LEN];
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/* In gfs1, quota and license dinodes followed */
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};
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struct ntfs_super_block {
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__u8 jump[3];
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__u8 oem_id[8];
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__u8 bios_parameter_block[25];
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__u16 unused[2];
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__u64 number_of_sectors;
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__u64 mft_cluster_location;
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__u64 mft_mirror_cluster_location;
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__s8 cluster_per_mft_record;
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__u8 reserved1[3];
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__s8 cluster_per_index_record;
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__u8 reserved2[3];
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__u64 volume_serial;
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__u16 checksum;
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};
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struct master_file_table_record {
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__u32 magic;
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__u16 usa_ofs;
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__u16 usa_count;
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__u64 lsn;
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__u16 sequence_number;
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__u16 link_count;
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__u16 attrs_offset;
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__u16 flags;
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__u32 bytes_in_use;
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__u32 bytes_allocated;
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} __attribute__((__packed__));
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struct file_attribute {
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__u32 type;
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__u32 len;
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__u8 non_resident;
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__u8 name_len;
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__u16 name_offset;
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__u16 flags;
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__u16 instance;
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__u32 value_len;
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__u16 value_offset;
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} __attribute__((__packed__));
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#define MFT_RECORD_VOLUME 3
|
|
#define MFT_RECORD_ATTR_VOLUME_NAME 0x60
|
|
#define MFT_RECORD_ATTR_VOLUME_INFO 0x70
|
|
#define MFT_RECORD_ATTR_OBJECT_ID 0x40
|
|
#define MFT_RECORD_ATTR_END 0xffffffffu
|
|
|
|
/* HFS / HFS+ */
|
|
struct hfs_finder_info {
|
|
__u32 boot_folder;
|
|
__u32 start_app;
|
|
__u32 open_folder;
|
|
__u32 os9_folder;
|
|
__u32 reserved;
|
|
__u32 osx_folder;
|
|
__u8 id[8];
|
|
} __attribute__((packed));
|
|
|
|
struct hfs_mdb {
|
|
__u8 signature[2];
|
|
__u32 cr_date;
|
|
__u32 ls_Mod;
|
|
__u16 atrb;
|
|
__u16 nm_fls;
|
|
__u16 vbm_st;
|
|
__u16 alloc_ptr;
|
|
__u16 nm_al_blks;
|
|
__u32 al_blk_size;
|
|
__u32 clp_size;
|
|
__u16 al_bl_st;
|
|
__u32 nxt_cnid;
|
|
__u16 free_bks;
|
|
__u8 label_len;
|
|
__u8 label[27];
|
|
__u32 vol_bkup;
|
|
__u16 vol_seq_num;
|
|
__u32 wr_cnt;
|
|
__u32 xt_clump_size;
|
|
__u32 ct_clump_size;
|
|
__u16 num_root_dirs;
|
|
__u32 file_count;
|
|
__u32 dir_count;
|
|
struct hfs_finder_info finder_info;
|
|
__u8 embed_sig[2];
|
|
__u16 embed_startblock;
|
|
__u16 embed_blockcount;
|
|
} __attribute__((packed));
|
|
|
|
/* this is lvm's label_header & pv_header combined. */
|
|
|
|
#define LVM2_ID_LEN 32
|
|
|
|
struct lvm2_pv_label_header {
|
|
/* label_header */
|
|
__u8 id[8]; /* LABELONE */
|
|
__u64 sector_xl; /* Sector number of this label */
|
|
__u32 crc_xl; /* From next field to end of sector */
|
|
__u32 offset_xl; /* Offset from start of struct to contents */
|
|
__u8 type[8]; /* LVM2 001 */
|
|
/* pv_header */
|
|
__u8 pv_uuid[LVM2_ID_LEN];
|
|
} __attribute__ ((packed));
|
|
|
|
/*
|
|
* Byte swap functions
|
|
*/
|
|
#ifdef __GNUC__
|
|
#define _INLINE_ static __inline__
|
|
#else /* For Watcom C */
|
|
#define _INLINE_ static inline
|
|
#endif
|
|
|
|
static __u16 blkid_swab16(__u16 val);
|
|
static __u32 blkid_swab32(__u32 val);
|
|
static __u64 blkid_swab64(__u64 val);
|
|
|
|
#if ((defined __GNUC__) && \
|
|
(defined(__i386__) || defined(__i486__) || defined(__i586__)))
|
|
|
|
#define _BLKID_HAVE_ASM_BITOPS_
|
|
|
|
_INLINE_ __u32 blkid_swab32(__u32 val)
|
|
{
|
|
#ifdef EXT2FS_REQUIRE_486
|
|
__asm__("bswap %0" : "=r" (val) : "0" (val));
|
|
#else
|
|
__asm__("xchgb %b0,%h0\n\t" /* swap lower bytes */
|
|
"rorl $16,%0\n\t" /* swap words */
|
|
"xchgb %b0,%h0" /* swap higher bytes */
|
|
:"=q" (val)
|
|
: "0" (val));
|
|
#endif
|
|
return val;
|
|
}
|
|
|
|
_INLINE_ __u16 blkid_swab16(__u16 val)
|
|
{
|
|
__asm__("xchgb %b0,%h0" /* swap bytes */ \
|
|
: "=q" (val) \
|
|
: "0" (val)); \
|
|
return val;
|
|
}
|
|
|
|
_INLINE_ __u64 blkid_swab64(__u64 val)
|
|
{
|
|
return (blkid_swab32(val >> 32) |
|
|
(((__u64) blkid_swab32(val & 0xFFFFFFFFUL)) << 32));
|
|
}
|
|
#endif
|
|
|
|
#if !defined(_BLKID_HAVE_ASM_BITOPS_)
|
|
|
|
_INLINE_ __u16 blkid_swab16(__u16 val)
|
|
{
|
|
return (val >> 8) | (val << 8);
|
|
}
|
|
|
|
_INLINE_ __u32 blkid_swab32(__u32 val)
|
|
{
|
|
return ((val>>24) | ((val>>8)&0xFF00) |
|
|
((val<<8)&0xFF0000) | (val<<24));
|
|
}
|
|
|
|
_INLINE_ __u64 blkid_swab64(__u64 val)
|
|
{
|
|
return (blkid_swab32(val >> 32) |
|
|
(((__u64) blkid_swab32(val & 0xFFFFFFFFUL)) << 32));
|
|
}
|
|
#endif
|
|
|
|
|
|
|
|
#ifdef WORDS_BIGENDIAN
|
|
#define blkid_le16(x) blkid_swab16(x)
|
|
#define blkid_le32(x) blkid_swab32(x)
|
|
#define blkid_le64(x) blkid_swab64(x)
|
|
#define blkid_be16(x) (x)
|
|
#define blkid_be32(x) (x)
|
|
#define blkid_be64(x) (x)
|
|
#else
|
|
#define blkid_le16(x) (x)
|
|
#define blkid_le32(x) (x)
|
|
#define blkid_le64(x) (x)
|
|
#define blkid_be16(x) blkid_swab16(x)
|
|
#define blkid_be32(x) blkid_swab32(x)
|
|
#define blkid_be64(x) blkid_swab64(x)
|
|
#endif
|
|
|
|
#undef _INLINE_
|
|
|
|
#endif /* _BLKID_PROBE_H */
|