/*
* 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 <blkid/blkid_types.h>
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
/* 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 allowr 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__));
/*
* 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 */