/* * probe.h - constants and on-disk structures for extracting device data * * Copyright (C) 1999 by Andries Brouwer * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o * Copyright (C) 2001 by Andreas Dilger * * %Begin-Header% * This file may be redistributed under the terms of the * GNU Lesser General Public License. * %End-Header% */ #ifndef _BLKID_PROBE_H #define _BLKID_PROBE_H #include #include struct blkid_magic; #define SB_BUFFER_SIZE 0x11000 struct blkid_probe { int fd; blkid_cache cache; blkid_dev dev; unsigned char *sbbuf; size_t sb_valid; unsigned char *buf; size_t buf_max; }; typedef int (*blkid_probe_t)(struct blkid_probe *probe, struct blkid_magic *id, unsigned char *buf); struct blkid_magic { const char *bim_type; /* type name for this magic */ long bim_kboff; /* kilobyte offset of superblock */ unsigned bim_sboff; /* byte offset within superblock */ unsigned bim_len; /* length of magic */ const char *bim_magic; /* magic string */ blkid_probe_t bim_probe; /* probe function */ }; /* * Structures for each of the content types we want to extract information * from. We do not necessarily need the magic field here, because we have * already identified the content type before we get this far. It may still * be useful if there are probe functions which handle multiple content types. */ struct ext2_super_block { __u32 s_inodes_count; __u32 s_blocks_count; __u32 s_r_blocks_count; __u32 s_free_blocks_count; __u32 s_free_inodes_count; __u32 s_first_data_block; __u32 s_log_block_size; __u32 s_dummy3[7]; unsigned char s_magic[2]; __u16 s_state; __u32 s_dummy5[8]; __u32 s_feature_compat; __u32 s_feature_incompat; __u32 s_feature_ro_compat; unsigned char s_uuid[16]; char s_volume_name[16]; char s_last_mounted[64]; __u32 s_algorithm_usage_bitmap; __u8 s_prealloc_blocks; __u8 s_prealloc_dir_blocks; __u16 s_reserved_gdt_blocks; __u8 s_journal_uuid[16]; __u32 s_journal_inum; __u32 s_journal_dev; __u32 s_last_orphan; __u32 s_hash_seed[4]; __u8 s_def_hash_version; __u8 s_jnl_backup_type; __u16 s_reserved_word_pad; __u32 s_default_mount_opts; __u32 s_first_meta_bg; __u32 s_mkfs_time; __u32 s_jnl_blocks[17]; __u32 s_blocks_count_hi; __u32 s_r_blocks_count_hi; __u32 s_free_blocks_hi; __u16 s_min_extra_isize; __u16 s_want_extra_isize; __u32 s_flags; __u16 s_raid_stride; __u16 s_mmp_interval; __u64 s_mmp_block; __u32 s_raid_stripe_width; __u32 s_reserved[163]; }; /* for s_flags */ #define EXT2_FLAGS_TEST_FILESYS 0x0004 /* for s_feature_compat */ #define EXT3_FEATURE_COMPAT_HAS_JOURNAL 0x0004 /* for s_feature_ro_compat */ #define EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 #define EXT2_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 #define EXT2_FEATURE_RO_COMPAT_BTREE_DIR 0x0004 #define EXT4_FEATURE_RO_COMPAT_HUGE_FILE 0x0008 #define EXT4_FEATURE_RO_COMPAT_GDT_CSUM 0x0010 #define EXT4_FEATURE_RO_COMPAT_DIR_NLINK 0x0020 #define EXT4_FEATURE_RO_COMPAT_EXTRA_ISIZE 0x0040 #define EXT4_FEATURE_RO_COMPAT_QUOTA 0x0100 #define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400 /* for s_feature_incompat */ #define EXT2_FEATURE_INCOMPAT_FILETYPE 0x0002 #define EXT3_FEATURE_INCOMPAT_RECOVER 0x0004 #define EXT3_FEATURE_INCOMPAT_JOURNAL_DEV 0x0008 #define EXT2_FEATURE_INCOMPAT_META_BG 0x0010 #define EXT4_FEATURE_INCOMPAT_EXTENTS 0x0040 /* extents support */ #define EXT4_FEATURE_INCOMPAT_64BIT 0x0080 #define EXT4_FEATURE_INCOMPAT_MMP 0x0100 #define EXT4_FEATURE_INCOMPAT_FLEX_BG 0x0200 #define EXT2_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \ EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ EXT2_FEATURE_RO_COMPAT_BTREE_DIR) #define EXT2_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \ EXT2_FEATURE_INCOMPAT_META_BG) #define EXT2_FEATURE_INCOMPAT_UNSUPPORTED ~EXT2_FEATURE_INCOMPAT_SUPP #define EXT2_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT2_FEATURE_RO_COMPAT_SUPP #define EXT3_FEATURE_RO_COMPAT_SUPP (EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER| \ EXT2_FEATURE_RO_COMPAT_LARGE_FILE| \ EXT2_FEATURE_RO_COMPAT_BTREE_DIR) #define EXT3_FEATURE_INCOMPAT_SUPP (EXT2_FEATURE_INCOMPAT_FILETYPE| \ EXT3_FEATURE_INCOMPAT_RECOVER| \ EXT2_FEATURE_INCOMPAT_META_BG) #define EXT3_FEATURE_INCOMPAT_UNSUPPORTED ~EXT3_FEATURE_INCOMPAT_SUPP #define EXT3_FEATURE_RO_COMPAT_UNSUPPORTED ~EXT3_FEATURE_RO_COMPAT_SUPP struct xfs_super_block { unsigned char xs_magic[4]; __u32 xs_blocksize; __u64 xs_dblocks; __u64 xs_rblocks; __u32 xs_dummy1[2]; unsigned char xs_uuid[16]; __u32 xs_dummy2[15]; char xs_fname[12]; __u32 xs_dummy3[2]; __u64 xs_icount; __u64 xs_ifree; __u64 xs_fdblocks; }; struct reiserfs_super_block { __u32 rs_blocks_count; __u32 rs_free_blocks; __u32 rs_root_block; __u32 rs_journal_block; __u32 rs_journal_dev; __u32 rs_orig_journal_size; __u32 rs_dummy2[5]; __u16 rs_blocksize; __u16 rs_dummy3[3]; unsigned char rs_magic[12]; __u32 rs_dummy4[5]; unsigned char rs_uuid[16]; char rs_label[16]; }; struct reiser4_super_block { unsigned char rs4_magic[16]; __u16 rs4_dummy[2]; unsigned char rs4_uuid[16]; unsigned char rs4_label[16]; __u64 rs4_dummy2; }; struct jfs_super_block { unsigned char js_magic[4]; __u32 js_version; __u64 js_size; __u32 js_bsize; /* 4: aggregate block size in bytes */ __u16 js_l2bsize; /* 2: log2 of s_bsize */ __u16 js_l2bfactor; /* 2: log2(s_bsize/hardware block size) */ __u32 js_pbsize; /* 4: hardware/LVM block size in bytes */ __u16 js_l2pbsize; /* 2: log2 of s_pbsize */ __u16 js_pad; /* 2: padding necessary for alignment */ __u32 js_dummy2[26]; unsigned char js_uuid[16]; unsigned char js_label[16]; unsigned char js_loguuid[16]; }; struct romfs_super_block { unsigned char ros_magic[8]; __u32 ros_dummy1[2]; unsigned char ros_volume[16]; }; struct cramfs_super_block { __u8 magic[4]; __u32 size; __u32 flags; __u32 future; __u8 signature[16]; struct cramfs_info { __u32 crc; __u32 edition; __u32 blocks; __u32 files; } info; __u8 name[16]; }; struct swap_id_block { /* unsigned char sws_boot[1024]; */ __u32 sws_version; __u32 sws_lastpage; __u32 sws_nrbad; unsigned char sws_uuid[16]; char sws_volume[16]; unsigned char sws_pad[117]; __u32 sws_badpg; }; /* Yucky misaligned values */ struct vfat_super_block { /* 00*/ unsigned char vs_ignored[3]; /* 03*/ unsigned char vs_sysid[8]; /* 0b*/ unsigned char vs_sector_size[2]; /* 0d*/ __u8 vs_cluster_size; /* 0e*/ __u16 vs_reserved; /* 10*/ __u8 vs_fats; /* 11*/ unsigned char vs_dir_entries[2]; /* 13*/ unsigned char vs_sectors[2]; /* 15*/ unsigned char vs_media; /* 16*/ __u16 vs_fat_length; /* 18*/ __u16 vs_secs_track; /* 1a*/ __u16 vs_heads; /* 1c*/ __u32 vs_hidden; /* 20*/ __u32 vs_total_sect; /* 24*/ __u32 vs_fat32_length; /* 28*/ __u16 vs_flags; /* 2a*/ __u8 vs_version[2]; /* 2c*/ __u32 vs_root_cluster; /* 30*/ __u16 vs_insfo_sector; /* 32*/ __u16 vs_backup_boot; /* 34*/ __u16 vs_reserved2[6]; /* 40*/ unsigned char vs_unknown[3]; /* 43*/ unsigned char vs_serno[4]; /* 47*/ unsigned char vs_label[11]; /* 52*/ unsigned char vs_magic[8]; /* 5a*/ unsigned char vs_dummy2[164]; /*1fe*/ unsigned char vs_pmagic[2]; }; /* Yucky misaligned values */ struct msdos_super_block { /* 00*/ unsigned char ms_ignored[3]; /* 03*/ unsigned char ms_sysid[8]; /* 0b*/ unsigned char ms_sector_size[2]; /* 0d*/ __u8 ms_cluster_size; /* 0e*/ __u16 ms_reserved; /* 10*/ __u8 ms_fats; /* 11*/ unsigned char ms_dir_entries[2]; /* 13*/ unsigned char ms_sectors[2]; /* 15*/ unsigned char ms_media; /* 16*/ __u16 ms_fat_length; /* 18*/ __u16 ms_secs_track; /* 1a*/ __u16 ms_heads; /* 1c*/ __u32 ms_hidden; /* 20*/ __u32 ms_total_sect; /* 24*/ unsigned char ms_unknown[3]; /* 27*/ unsigned char ms_serno[4]; /* 2b*/ unsigned char ms_label[11]; /* 36*/ unsigned char ms_magic[8]; /* 3d*/ unsigned char ms_dummy2[192]; /*1fe*/ unsigned char ms_pmagic[2]; }; struct vfat_dir_entry { __u8 name[11]; __u8 attr; __u16 time_creat; __u16 date_creat; __u16 time_acc; __u16 date_acc; __u16 cluster_high; __u16 time_write; __u16 date_write; __u16 cluster_low; __u32 size; }; /* maximum number of clusters */ #define FAT12_MAX 0xFF4 #define FAT16_MAX 0xFFF4 #define FAT32_MAX 0x0FFFFFF6 struct minix_super_block { __u16 ms_ninodes; __u16 ms_nzones; __u16 ms_imap_blocks; __u16 ms_zmap_blocks; __u16 ms_firstdatazone; __u16 ms_log_zone_size; __u32 ms_max_size; unsigned char ms_magic[2]; __u16 ms_state; __u32 ms_zones; }; struct mdp_superblock_s { __u32 md_magic; __u32 major_version; __u32 minor_version; __u32 patch_version; __u32 gvalid_words; __u32 set_uuid0; __u32 ctime; __u32 level; __u32 size; __u32 nr_disks; __u32 raid_disks; __u32 md_minor; __u32 not_persistent; __u32 set_uuid1; __u32 set_uuid2; __u32 set_uuid3; }; struct hfs_super_block { char h_magic[2]; char h_dummy[18]; __u32 h_blksize; }; struct ocfs_volume_header { unsigned char minor_version[4]; unsigned char major_version[4]; unsigned char signature[128]; char mount[128]; unsigned char mount_len[2]; }; struct ocfs_volume_label { unsigned char disk_lock[48]; char label[64]; unsigned char label_len[2]; unsigned char vol_id[16]; unsigned char vol_id_len[2]; }; #define ocfsmajor(o) ((__u32)o.major_version[0] \ + (((__u32) o.major_version[1]) << 8) \ + (((__u32) o.major_version[2]) << 16) \ + (((__u32) o.major_version[3]) << 24)) #define ocfslabellen(o) ((__u32)o.label_len[0] + (((__u32) o.label_len[1]) << 8)) #define ocfsmountlen(o) ((__u32)o.mount_len[0] + (((__u32) o.mount_len[1])<<8)) #define OCFS_MAGIC "OracleCFS" struct ocfs2_super_block { unsigned char signature[8]; unsigned char s_dummy1[184]; unsigned char s_dummy2[80]; char s_label[64]; unsigned char s_uuid[16]; }; #define OCFS2_MIN_BLOCKSIZE 512 #define OCFS2_MAX_BLOCKSIZE 4096 #define OCFS2_SUPER_BLOCK_BLKNO 2 #define OCFS2_SUPER_BLOCK_SIGNATURE "OCFSV2" struct oracle_asm_disk_label { char dummy[32]; char dl_tag[8]; char dl_id[24]; }; #define ORACLE_ASM_DISK_LABEL_MARKED "ORCLDISK" #define ORACLE_ASM_DISK_LABEL_OFFSET 32 struct iso_volume_descriptor { unsigned char vd_type; unsigned char vd_id[5]; unsigned char vd_version; unsigned char flags; unsigned char system_id[32]; unsigned char volume_id[32]; unsigned char unused[8]; unsigned char space_size[8]; unsigned char escape_sequences[8]; }; /* Common gfs/gfs2 constants: */ #define GFS_MAGIC 0x01161970 #define GFS_DEFAULT_BSIZE 4096 #define GFS_SUPERBLOCK_OFFSET (0x10 * GFS_DEFAULT_BSIZE) #define GFS_METATYPE_SB 1 #define GFS_FORMAT_SB 100 #define GFS_LOCKNAME_LEN 64 /* gfs1 constants: */ #define GFS_FORMAT_FS 1309 #define GFS_FORMAT_MULTI 1401 /* gfs2 constants: */ #define GFS2_FORMAT_FS 1801 #define GFS2_FORMAT_MULTI 1900 struct gfs2_meta_header { __u32 mh_magic; __u32 mh_type; __u64 __pad0; /* Was generation number in gfs1 */ __u32 mh_format; __u32 __pad1; /* Was incarnation number in gfs1 */ }; struct gfs2_inum { __u64 no_formal_ino; __u64 no_addr; }; struct gfs2_sb { struct gfs2_meta_header sb_header; __u32 sb_fs_format; __u32 sb_multihost_format; __u32 __pad0; /* Was superblock flags in gfs1 */ __u32 sb_bsize; __u32 sb_bsize_shift; __u32 __pad1; /* Was journal segment size in gfs1 */ struct gfs2_inum sb_master_dir; /* Was jindex dinode in gfs1 */ struct gfs2_inum __pad2; /* Was rindex dinode in gfs1 */ struct gfs2_inum sb_root_dir; char sb_lockproto[GFS_LOCKNAME_LEN]; char sb_locktable[GFS_LOCKNAME_LEN]; /* In gfs1, quota and license dinodes followed */ }; struct ntfs_super_block { __u8 jump[3]; __u8 oem_id[8]; __u8 bios_parameter_block[25]; __u16 unused[2]; __u64 number_of_sectors; __u64 mft_cluster_location; __u64 mft_mirror_cluster_location; __s8 cluster_per_mft_record; __u8 reserved1[3]; __s8 cluster_per_index_record; __u8 reserved2[3]; __u64 volume_serial; __u16 checksum; }; struct master_file_table_record { __u32 magic; __u16 usa_ofs; __u16 usa_count; __u64 lsn; __u16 sequence_number; __u16 link_count; __u16 attrs_offset; __u16 flags; __u32 bytes_in_use; __u32 bytes_allocated; } __attribute__((__packed__)); struct file_attribute { __u32 type; __u32 len; __u8 non_resident; __u8 name_len; __u16 name_offset; __u16 flags; __u16 instance; __u32 value_len; __u16 value_offset; } __attribute__((__packed__)); #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)); #define HFS_NODE_LEAF 0xff #define HFSPLUS_POR_CNID 1 struct hfsplus_bnode_descriptor { __u32 next; __u32 prev; __u8 type; __u8 height; __u16 num_recs; __u16 reserved; } __attribute__((packed)); struct hfsplus_bheader_record { __u16 depth; __u32 root; __u32 leaf_count; __u32 leaf_head; __u32 leaf_tail; __u16 node_size; } __attribute__((packed)); struct hfsplus_catalog_key { __u16 key_len; __u32 parent_id; __u16 unicode_len; __u8 unicode[255 * 2]; } __attribute__((packed)); struct hfsplus_extent { __u32 start_block; __u32 block_count; } __attribute__((packed)); #define HFSPLUS_EXTENT_COUNT 8 struct hfsplus_fork { __u64 total_size; __u32 clump_size; __u32 total_blocks; struct hfsplus_extent extents[HFSPLUS_EXTENT_COUNT]; } __attribute__((packed)); struct hfsplus_vol_header { __u8 signature[2]; __u16 version; __u32 attributes; __u32 last_mount_vers; __u32 reserved; __u32 create_date; __u32 modify_date; __u32 backup_date; __u32 checked_date; __u32 file_count; __u32 folder_count; __u32 blocksize; __u32 total_blocks; __u32 free_blocks; __u32 next_alloc; __u32 rsrc_clump_sz; __u32 data_clump_sz; __u32 next_cnid; __u32 write_count; __u64 encodings_bmp; struct hfs_finder_info finder_info; struct hfsplus_fork alloc_file; struct hfsplus_fork ext_file; struct hfsplus_fork cat_file; struct hfsplus_fork attr_file; struct hfsplus_fork start_file; } __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)); /* * this is a very generous portion of the super block, giving us * room to translate 14 chunks with 3 stripes each. */ #define BTRFS_SYSTEM_CHUNK_ARRAY_SIZE 2048 #define BTRFS_LABEL_SIZE 256 #define BTRFS_UUID_SIZE 16 #define BTRFS_FSID_SIZE 16 #define BTRFS_CSUM_SIZE 32 struct btrfs_dev_item { /* the internal btrfs device id */ __u64 devid; /* size of the device */ __u64 total_bytes; /* bytes used */ __u64 bytes_used; /* optimal io alignment for this device */ __u32 io_align; /* optimal io width for this device */ __u32 io_width; /* minimal io size for this device */ __u32 sector_size; /* type and info about this device */ __u64 type; /* expected generation for this device */ __u64 generation; /* * starting byte of this partition on the device, * to allow for stripe alignment in the future */ __u64 start_offset; /* grouping information for allocation decisions */ __u32 dev_group; /* seek speed 0-100 where 100 is fastest */ __u8 seek_speed; /* bandwidth 0-100 where 100 is fastest */ __u8 bandwidth; /* btrfs generated uuid for this device */ __u8 uuid[BTRFS_UUID_SIZE]; /* uuid of FS who owns this device */ __u8 fsid[BTRFS_UUID_SIZE]; } __attribute__ ((__packed__)); /* * the super block basically lists the main trees of the FS * it currently lacks any block count etc etc */ struct btrfs_super_block { __u8 csum[BTRFS_CSUM_SIZE]; /* the first 3 fields must match struct btrfs_header */ __u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ __u64 bytenr; /* this block number */ __u64 flags; /* allowed to be different from the btrfs_header from here own down */ __u64 magic; __u64 generation; __u64 root; __u64 chunk_root; __u64 log_root; /* this will help find the new super based on the log root */ __u64 log_root_transid; __u64 total_bytes; __u64 bytes_used; __u64 root_dir_objectid; __u64 num_devices; __u32 sectorsize; __u32 nodesize; __u32 leafsize; __u32 stripesize; __u32 sys_chunk_array_size; __u64 chunk_root_generation; __u64 compat_flags; __u64 compat_ro_flags; __u64 incompat_flags; __u16 csum_type; __u8 root_level; __u8 chunk_root_level; __u8 log_root_level; struct btrfs_dev_item dev_item; char label[BTRFS_LABEL_SIZE]; /* future expansion */ __u64 reserved[32]; __u8 sys_chunk_array[BTRFS_SYSTEM_CHUNK_ARRAY_SIZE]; } __attribute__ ((__packed__)); #define F2FS_MAX_EXTENSION 64 /* # of extension entries */ struct f2fs_super_block { __u32 magic; /* Magic Number */ __u16 major_ver; /* Major Version */ __u16 minor_ver; /* Minor Version */ __u32 log_sectorsize; /* log2 sector size in bytes */ __u32 log_sectors_per_block; /* log2 # of sectors per block */ __u32 log_blocksize; /* log2 block size in bytes */ __u32 log_blocks_per_seg; /* log2 # of blocks per segment */ __u32 segs_per_sec; /* # of segments per section */ __u32 secs_per_zone; /* # of sections per zone */ __u32 checksum_offset; /* checksum offset inside super block */ __u64 block_count; /* total # of user blocks */ __u32 section_count; /* total # of sections */ __u32 segment_count; /* total # of segments */ __u32 segment_count_ckpt; /* # of segments for checkpoint */ __u32 segment_count_sit; /* # of segments for SIT */ __u32 segment_count_nat; /* # of segments for NAT */ __u32 segment_count_ssa; /* # of segments for SSA */ __u32 segment_count_main; /* # of segments for main area */ __u32 segment0_blkaddr; /* start block address of segment 0 */ __u32 cp_blkaddr; /* start block address of checkpoint */ __u32 sit_blkaddr; /* start block address of SIT */ __u32 nat_blkaddr; /* start block address of NAT */ __u32 ssa_blkaddr; /* start block address of SSA */ __u32 main_blkaddr; /* start block address of main area */ __u32 root_ino; /* root inode number */ __u32 node_ino; /* node inode number */ __u32 meta_ino; /* meta inode number */ __u8 uuid[16]; /* 128-bit uuid for volume */ __u16 volume_name[512]; /* volume name */ __u32 extension_count; /* # of extensions below */ __u8 extension_list[F2FS_MAX_EXTENSION][8]; /* extension array */ } __attribute__((__packed__)); struct exfat_super_block { uint8_t jump[3]; uint8_t oem_name[8]; uint8_t __unused1[53]; uint64_t block_start; uint64_t block_count; uint32_t fat_block_start; uint32_t fat_block_count; uint32_t cluster_block_start; uint32_t cluster_count; uint32_t rootdir_cluster; uint8_t volume_serial[4]; struct { uint8_t vermin; uint8_t vermaj; } version; uint16_t volume_state; uint8_t block_bits; uint8_t bpc_bits; uint8_t fat_count; uint8_t drive_no; uint8_t allocated_percent; } __attribute__((__packed__)); struct exfat_entry_label { uint8_t type; uint8_t length; uint8_t name[30]; } __attribute__((__packed__)); #define BLOCK_SIZE(sb) (1 << (sb)->block_bits) #define CLUSTER_SIZE(sb) (BLOCK_SIZE(sb) << (sb)->bpc_bits) #define EXFAT_FIRST_DATA_CLUSTER 2 #define EXFAT_LAST_DATA_CLUSTER 0xffffff6 #define EXFAT_ENTRY_SIZE 32 #define EXFAT_ENTRY_EOD 0x00 #define EXFAT_ENTRY_LABEL 0x83 /* * Byte swap functions */ #ifdef __GNUC__ #define _INLINE_ static __inline__ #else /* For Watcom C */ #define _INLINE_ static inline #endif _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)); } #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 */