ubifs-utils: Move ubifs-media.h in libubifs

Since ubifs-media.h is only used for ubifs-utils, move it under
ubifs-utils/libubifs.

Signed-off-by: Zhihao Cheng <chengzhihao1@huawei.com>
Signed-off-by: David Oberhollenzer <david.oberhollenzer@sigma-star.at>

1 files changed, 0 insertions, 869 deletions

diff --git a/include/mtd/ubifs-media.h b/include/mtd/ubifs-media.h
deleted file mode 100644
index f1e3a14..0000000
--- a/include/mtd/ubifs-media.h
+++ /dev/null
@@ -1,869 +0,0 @@
-/*
- * This file is part of UBIFS.
- *
- * Copyright (C) 2006-2008 Nokia Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc., 51
- * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- *
- * Authors: Artem Bityutskiy (Битюцкий Артём)
- *          Adrian Hunter
- */
-
-/*
- * This file describes UBIFS on-flash format and contains definitions of all the
- * relevant data structures and constants.
- *
- * All UBIFS on-flash objects are stored in the form of nodes. All nodes start
- * with the UBIFS node magic number and have the same common header. Nodes
- * always sit at 8-byte aligned positions on the media and node header sizes are
- * also 8-byte aligned (except for the indexing node and the padding node).
- */
-
-#ifndef __UBIFS_MEDIA_H__
-#define __UBIFS_MEDIA_H__
-
-#include <asm/byteorder.h>
-
-/* UBIFS node magic number (must not have the padding byte first or last) */
-#define UBIFS_NODE_MAGIC  0x06101831
-
-/*
- * UBIFS on-flash format version. This version is increased when the on-flash
- * format is changing. If this happens, UBIFS is will support older versions as
- * well. But older UBIFS code will not support newer formats. Format changes
- * will be rare and only when absolutely necessary, e.g. to fix a bug or to add
- * a new feature.
- *
- * UBIFS went into mainline kernel with format version 4. The older formats
- * were development formats.
- */
-#define UBIFS_FORMAT_VERSION 5
-
-/*
- * Read-only compatibility version. If the UBIFS format is changed, older UBIFS
- * implementations will not be able to mount newer formats in read-write mode.
- * However, depending on the change, it may be possible to mount newer formats
- * in R/O mode. This is indicated by the R/O compatibility version which is
- * stored in the super-block.
- *
- * This is needed to support boot-loaders which only need R/O mounting. With
- * this flag it is possible to do UBIFS format changes without a need to update
- * boot-loaders.
- */
-#define UBIFS_RO_COMPAT_VERSION 0
-
-/* Minimum logical eraseblock size in bytes */
-#define UBIFS_MIN_LEB_SZ (15*1024)
-
-/* Initial CRC32 value used when calculating CRC checksums */
-#define UBIFS_CRC32_INIT 0xFFFFFFFFU
-
-/*
- * UBIFS does not try to compress data if its length is less than the below
- * constant.
- */
-#define UBIFS_MIN_COMPR_LEN 128
-
-/*
- * If compressed data length is less than %UBIFS_MIN_COMPRESS_DIFF bytes
- * shorter than uncompressed data length, UBIFS prefers to leave this data
- * node uncompress, because it'll be read faster.
- */
-#define UBIFS_MIN_COMPRESS_DIFF 64
-
-/* Root inode number */
-#define UBIFS_ROOT_INO 1
-
-/* Lowest inode number used for regular inodes (not UBIFS-only internal ones) */
-#define UBIFS_FIRST_INO 64
-
-/*
- * Maximum file name and extended attribute length (must be a multiple of 8,
- * minus 1).
- */
-#define UBIFS_MAX_NLEN 255
-
-/* Maximum number of data journal heads */
-#define UBIFS_MAX_JHEADS 1
-
-/*
- * Size of UBIFS data block. Note, UBIFS is not a block oriented file-system,
- * which means that it does not treat the underlying media as consisting of
- * blocks like in case of hard drives. Do not be confused. UBIFS block is just
- * the maximum amount of data which one data node can have or which can be
- * attached to an inode node.
- */
-#define UBIFS_BLOCK_SIZE  4096
-#define UBIFS_BLOCK_SHIFT 12
-
-/* UBIFS padding byte pattern (must not be first or last byte of node magic) */
-#define UBIFS_PADDING_BYTE 0xCE
-
-/* Maximum possible key length */
-#define UBIFS_MAX_KEY_LEN 16
-
-/* Key length ("simple" format) */
-#define UBIFS_SK_LEN 8
-
-/* Minimum index tree fanout */
-#define UBIFS_MIN_FANOUT 3
-
-/* Maximum number of levels in UBIFS indexing B-tree */
-#define UBIFS_MAX_LEVELS 512
-
-/* Maximum amount of data attached to an inode in bytes */
-#define UBIFS_MAX_INO_DATA UBIFS_BLOCK_SIZE
-
-/* LEB Properties Tree fanout (must be power of 2) and fanout shift */
-#define UBIFS_LPT_FANOUT 4
-#define UBIFS_LPT_FANOUT_SHIFT 2
-
-/* LEB Properties Tree bit field sizes */
-#define UBIFS_LPT_CRC_BITS 16
-#define UBIFS_LPT_CRC_BYTES 2
-#define UBIFS_LPT_TYPE_BITS 4
-
-/* The key is always at the same position in all keyed nodes */
-#define UBIFS_KEY_OFFSET offsetof(struct ubifs_ino_node, key)
-
-/* Garbage collector journal head number */
-#define UBIFS_GC_HEAD   0
-/* Base journal head number */
-#define UBIFS_BASE_HEAD 1
-/* Data journal head number */
-#define UBIFS_DATA_HEAD 2
-
-/*
- * LEB Properties Tree node types.
- *
- * UBIFS_LPT_PNODE: LPT leaf node (contains LEB properties)
- * UBIFS_LPT_NNODE: LPT internal node
- * UBIFS_LPT_LTAB: LPT's own lprops table
- * UBIFS_LPT_LSAVE: LPT's save table (big model only)
- * UBIFS_LPT_NODE_CNT: count of LPT node types
- * UBIFS_LPT_NOT_A_NODE: all ones (15 for 4 bits) is never a valid node type
- */
-enum {
-	UBIFS_LPT_PNODE,
-	UBIFS_LPT_NNODE,
-	UBIFS_LPT_LTAB,
-	UBIFS_LPT_LSAVE,
-	UBIFS_LPT_NODE_CNT,
-	UBIFS_LPT_NOT_A_NODE = (1 << UBIFS_LPT_TYPE_BITS) - 1,
-};
-
-/*
- * UBIFS inode types.
- *
- * UBIFS_ITYPE_REG: regular file
- * UBIFS_ITYPE_DIR: directory
- * UBIFS_ITYPE_LNK: soft link
- * UBIFS_ITYPE_BLK: block device node
- * UBIFS_ITYPE_CHR: character device node
- * UBIFS_ITYPE_FIFO: fifo
- * UBIFS_ITYPE_SOCK: socket
- * UBIFS_ITYPES_CNT: count of supported file types
- */
-enum {
-	UBIFS_ITYPE_REG,
-	UBIFS_ITYPE_DIR,
-	UBIFS_ITYPE_LNK,
-	UBIFS_ITYPE_BLK,
-	UBIFS_ITYPE_CHR,
-	UBIFS_ITYPE_FIFO,
-	UBIFS_ITYPE_SOCK,
-	UBIFS_ITYPES_CNT,
-};
-
-/*
- * Supported key hash functions.
- *
- * UBIFS_KEY_HASH_R5: R5 hash
- * UBIFS_KEY_HASH_TEST: test hash which just returns first 4 bytes of the name
- */
-enum {
-	UBIFS_KEY_HASH_R5,
-	UBIFS_KEY_HASH_TEST,
-};
-
-/*
- * Supported key formats.
- *
- * UBIFS_SIMPLE_KEY_FMT: simple key format
- */
-enum {
-	UBIFS_SIMPLE_KEY_FMT,
-};
-
-/*
- * The simple key format uses 29 bits for storing UBIFS block number and hash
- * value.
- */
-#define UBIFS_S_KEY_BLOCK_BITS 29
-#define UBIFS_S_KEY_BLOCK_MASK 0x1FFFFFFF
-#define UBIFS_S_KEY_HASH_BITS  UBIFS_S_KEY_BLOCK_BITS
-#define UBIFS_S_KEY_HASH_MASK  UBIFS_S_KEY_BLOCK_MASK
-
-/*
- * Key types.
- *
- * UBIFS_INO_KEY: inode node key
- * UBIFS_DATA_KEY: data node key
- * UBIFS_DENT_KEY: directory entry node key
- * UBIFS_XENT_KEY: extended attribute entry key
- * UBIFS_KEY_TYPES_CNT: number of supported key types
- */
-enum {
-	UBIFS_INO_KEY,
-	UBIFS_DATA_KEY,
-	UBIFS_DENT_KEY,
-	UBIFS_XENT_KEY,
-	UBIFS_KEY_TYPES_CNT,
-};
-
-/* Count of LEBs reserved for the superblock area */
-#define UBIFS_SB_LEBS 1
-/* Count of LEBs reserved for the master area */
-#define UBIFS_MST_LEBS 2
-
-/* First LEB of the superblock area */
-#define UBIFS_SB_LNUM 0
-/* First LEB of the master area */
-#define UBIFS_MST_LNUM (UBIFS_SB_LNUM + UBIFS_SB_LEBS)
-/* First LEB of the log area */
-#define UBIFS_LOG_LNUM (UBIFS_MST_LNUM + UBIFS_MST_LEBS)
-
-/*
- * The below constants define the absolute minimum values for various UBIFS
- * media areas. Many of them actually depend of flash geometry and the FS
- * configuration (number of journal heads, orphan LEBs, etc). This means that
- * the smallest volume size which can be used for UBIFS cannot be pre-defined
- * by these constants. The file-system that meets the below limitation will not
- * necessarily mount. UBIFS does run-time calculations and validates the FS
- * size.
- */
-
-/* Minimum number of logical eraseblocks in the log */
-#define UBIFS_MIN_LOG_LEBS 2
-/* Minimum number of bud logical eraseblocks (one for each head) */
-#define UBIFS_MIN_BUD_LEBS 3
-/* Minimum number of journal logical eraseblocks */
-#define UBIFS_MIN_JNL_LEBS (UBIFS_MIN_LOG_LEBS + UBIFS_MIN_BUD_LEBS)
-/* Minimum number of LPT area logical eraseblocks */
-#define UBIFS_MIN_LPT_LEBS 2
-/* Minimum number of orphan area logical eraseblocks */
-#define UBIFS_MIN_ORPH_LEBS 1
-/*
- * Minimum number of main area logical eraseblocks (buds, 3 for the index, 1
- * for GC, 1 for deletions, and at least 1 for committed data).
- */
-#define UBIFS_MIN_MAIN_LEBS (UBIFS_MIN_BUD_LEBS + 6)
-
-/* Minimum number of logical eraseblocks */
-#define UBIFS_MIN_LEB_CNT (UBIFS_SB_LEBS + UBIFS_MST_LEBS + \
-			   UBIFS_MIN_LOG_LEBS + UBIFS_MIN_LPT_LEBS + \
-			   UBIFS_MIN_ORPH_LEBS + UBIFS_MIN_MAIN_LEBS)
-
-/* Node sizes (N.B. these are guaranteed to be multiples of 8) */
-#define UBIFS_CH_SZ        sizeof(struct ubifs_ch)
-#define UBIFS_INO_NODE_SZ  sizeof(struct ubifs_ino_node)
-#define UBIFS_DATA_NODE_SZ sizeof(struct ubifs_data_node)
-#define UBIFS_DENT_NODE_SZ sizeof(struct ubifs_dent_node)
-#define UBIFS_TRUN_NODE_SZ sizeof(struct ubifs_trun_node)
-#define UBIFS_PAD_NODE_SZ  sizeof(struct ubifs_pad_node)
-#define UBIFS_SB_NODE_SZ   sizeof(struct ubifs_sb_node)
-#define UBIFS_MST_NODE_SZ  sizeof(struct ubifs_mst_node)
-#define UBIFS_REF_NODE_SZ  sizeof(struct ubifs_ref_node)
-#define UBIFS_IDX_NODE_SZ  sizeof(struct ubifs_idx_node)
-#define UBIFS_CS_NODE_SZ   sizeof(struct ubifs_cs_node)
-#define UBIFS_ORPH_NODE_SZ sizeof(struct ubifs_orph_node)
-#define UBIFS_AUTH_NODE_SZ sizeof(struct ubifs_auth_node)
-#define UBIFS_SIG_NODE_SZ  sizeof(struct ubifs_sig_node)
-
-/* Extended attribute entry nodes are identical to directory entry nodes */
-#define UBIFS_XENT_NODE_SZ UBIFS_DENT_NODE_SZ
-/* Only this does not have to be multiple of 8 bytes */
-#define UBIFS_BRANCH_SZ    sizeof(struct ubifs_branch)
-
-/* Maximum node sizes (N.B. these are guaranteed to be multiples of 8) */
-#define UBIFS_MAX_DATA_NODE_SZ  (UBIFS_DATA_NODE_SZ + UBIFS_BLOCK_SIZE)
-#define UBIFS_MAX_INO_NODE_SZ   (UBIFS_INO_NODE_SZ + UBIFS_MAX_INO_DATA)
-#define UBIFS_MAX_DENT_NODE_SZ  (UBIFS_DENT_NODE_SZ + UBIFS_MAX_NLEN + 1)
-#define UBIFS_MAX_XENT_NODE_SZ  UBIFS_MAX_DENT_NODE_SZ
-
-/* The largest UBIFS node */
-#define UBIFS_MAX_NODE_SZ UBIFS_MAX_INO_NODE_SZ
-
-/* The maxmimum size of a hash, enough for sha512 */
-#define UBIFS_MAX_HASH_LEN 64
-
-/* The maxmimum size of a hmac, enough for hmac(sha512) */
-#define UBIFS_MAX_HMAC_LEN 64
-
-/*
- * xattr name of UBIFS encryption context, we don't use a prefix
- * nor a long name to not waste space on the flash.
- */
-#define UBIFS_XATTR_NAME_ENCRYPTION_CONTEXT "c"
-
-/* Type field in ubifs_sig_node */
-#define UBIFS_SIGNATURE_TYPE_PKCS7	1
-
-/*
- * On-flash inode flags.
- *
- * UBIFS_COMPR_FL: use compression for this inode
- * UBIFS_SYNC_FL:  I/O on this inode has to be synchronous
- * UBIFS_IMMUTABLE_FL: inode is immutable
- * UBIFS_APPEND_FL: writes to the inode may only append data
- * UBIFS_DIRSYNC_FL: I/O on this directory inode has to be synchronous
- * UBIFS_XATTR_FL: this inode is the inode for an extended attribute value
- * UBIFS_CRYPT_FL: use encryption for this inode
- *
- * Note, these are on-flash flags which correspond to ioctl flags
- * (@FS_COMPR_FL, etc). They have the same values now, but generally, do not
- * have to be the same.
- */
-enum {
-	UBIFS_COMPR_FL     = 0x01,
-	UBIFS_SYNC_FL      = 0x02,
-	UBIFS_IMMUTABLE_FL = 0x04,
-	UBIFS_APPEND_FL    = 0x08,
-	UBIFS_DIRSYNC_FL   = 0x10,
-	UBIFS_XATTR_FL     = 0x20,
-	UBIFS_CRYPT_FL     = 0x40,
-};
-
-/* Inode flag bits used by UBIFS */
-#define UBIFS_FL_MASK 0x0000001F
-
-/*
- * UBIFS compression algorithms.
- *
- * UBIFS_COMPR_NONE: no compression
- * UBIFS_COMPR_LZO: LZO compression
- * UBIFS_COMPR_ZLIB: ZLIB compression
- * UBIFS_COMPR_ZSTD: ZSTD compression
- * UBIFS_COMPR_TYPES_CNT: count of supported compression types
- */
-enum {
-	UBIFS_COMPR_NONE,
-	UBIFS_COMPR_LZO,
-	UBIFS_COMPR_ZLIB,
-	UBIFS_COMPR_ZSTD,
-	UBIFS_COMPR_TYPES_CNT,
-};
-
-/*
- * UBIFS node types.
- *
- * UBIFS_INO_NODE: inode node
- * UBIFS_DATA_NODE: data node
- * UBIFS_DENT_NODE: directory entry node
- * UBIFS_XENT_NODE: extended attribute node
- * UBIFS_TRUN_NODE: truncation node
- * UBIFS_PAD_NODE: padding node
- * UBIFS_SB_NODE: superblock node
- * UBIFS_MST_NODE: master node
- * UBIFS_REF_NODE: LEB reference node
- * UBIFS_IDX_NODE: index node
- * UBIFS_CS_NODE: commit start node
- * UBIFS_ORPH_NODE: orphan node
- * UBIFS_AUTH_NODE: authentication node
- * UBIFS_SIG_NODE: signature node
- * UBIFS_NODE_TYPES_CNT: count of supported node types
- *
- * Note, we index arrays by these numbers, so keep them low and contiguous.
- * Node type constants for inodes, direntries and so on have to be the same as
- * corresponding key type constants.
- */
-enum {
-	UBIFS_INO_NODE,
-	UBIFS_DATA_NODE,
-	UBIFS_DENT_NODE,
-	UBIFS_XENT_NODE,
-	UBIFS_TRUN_NODE,
-	UBIFS_PAD_NODE,
-	UBIFS_SB_NODE,
-	UBIFS_MST_NODE,
-	UBIFS_REF_NODE,
-	UBIFS_IDX_NODE,
-	UBIFS_CS_NODE,
-	UBIFS_ORPH_NODE,
-	UBIFS_AUTH_NODE,
-	UBIFS_SIG_NODE,
-	UBIFS_NODE_TYPES_CNT,
-};
-
-/*
- * Master node flags.
- *
- * UBIFS_MST_DIRTY: rebooted uncleanly - master node is dirty
- * UBIFS_MST_NO_ORPHS: no orphan inodes present
- * UBIFS_MST_RCVRY: written by recovery
- */
-enum {
-	UBIFS_MST_DIRTY = 1,
-	UBIFS_MST_NO_ORPHS = 2,
-	UBIFS_MST_RCVRY = 4,
-};
-
-/*
- * Node group type (used by recovery to recover whole group or none).
- *
- * UBIFS_NO_NODE_GROUP: this node is not part of a group
- * UBIFS_IN_NODE_GROUP: this node is a part of a group
- * UBIFS_LAST_OF_NODE_GROUP: this node is the last in a group
- */
-enum {
-	UBIFS_NO_NODE_GROUP = 0,
-	UBIFS_IN_NODE_GROUP,
-	UBIFS_LAST_OF_NODE_GROUP,
-};
-
-/*
- * Superblock flags.
- *
- * UBIFS_FLG_BIGLPT: if "big" LPT model is used if set
- * UBIFS_FLG_SPACE_FIXUP: first-mount "fixup" of free space within LEBs needed
- * UBIFS_FLG_DOUBLE_HASH: store a 32bit cookie in directory entry nodes to
- *			  support 64bit cookies for lookups by hash
- * UBIFS_FLG_ENCRYPTION: this filesystem contains encrypted files
- * UBIFS_FLG_AUTHENTICATION: this filesystem contains hashes for authentication
- */
-enum {
-	UBIFS_FLG_BIGLPT = 0x02,
-	UBIFS_FLG_SPACE_FIXUP = 0x04,
-	UBIFS_FLG_DOUBLE_HASH = 0x08,
-	UBIFS_FLG_ENCRYPTION = 0x10,
-	UBIFS_FLG_AUTHENTICATION = 0x20,
-};
-
-#define UBIFS_FLG_MASK (UBIFS_FLG_BIGLPT | UBIFS_FLG_SPACE_FIXUP | \
-		UBIFS_FLG_DOUBLE_HASH | UBIFS_FLG_ENCRYPTION | \
-		UBIFS_FLG_AUTHENTICATION)
-
-/**
- * struct ubifs_ch - common header node.
- * @magic: UBIFS node magic number (%UBIFS_NODE_MAGIC)
- * @crc: CRC-32 checksum of the node header
- * @sqnum: sequence number
- * @len: full node length
- * @node_type: node type
- * @group_type: node group type
- * @padding: reserved for future, zeroes
- *
- * Every UBIFS node starts with this common part. If the node has a key, the
- * key always goes next.
- */
-struct ubifs_ch {
-	__le32 magic;
-	__le32 crc;
-	__le64 sqnum;
-	__le32 len;
-	__u8 node_type;
-	__u8 group_type;
-	__u8 padding[2];
-} __attribute__ ((packed));
-
-/**
- * union ubifs_dev_desc - device node descriptor.
- * @new: new type device descriptor
- * @huge: huge type device descriptor
- *
- * This data structure describes major/minor numbers of a device node. In an
- * inode is a device node then its data contains an object of this type. UBIFS
- * uses standard Linux "new" and "huge" device node encodings.
- */
-union ubifs_dev_desc {
-	__le32 new;
-	__le64 huge;
-} __attribute__ ((packed));
-
-/**
- * struct ubifs_ino_node - inode node.
- * @ch: common header
- * @key: node key
- * @creat_sqnum: sequence number at time of creation
- * @size: inode size in bytes (amount of uncompressed data)
- * @atime_sec: access time seconds
- * @ctime_sec: creation time seconds
- * @mtime_sec: modification time seconds
- * @atime_nsec: access time nanoseconds
- * @ctime_nsec: creation time nanoseconds
- * @mtime_nsec: modification time nanoseconds
- * @nlink: number of hard links
- * @uid: owner ID
- * @gid: group ID
- * @mode: access flags
- * @flags: per-inode flags (%UBIFS_COMPR_FL, %UBIFS_SYNC_FL, etc)
- * @data_len: inode data length
- * @xattr_cnt: count of extended attributes this inode has
- * @xattr_size: summarized size of all extended attributes in bytes
- * @padding1: reserved for future, zeroes
- * @xattr_names: sum of lengths of all extended attribute names belonging to
- *               this inode
- * @compr_type: compression type used for this inode
- * @padding2: reserved for future, zeroes
- * @data: data attached to the inode
- *
- * Note, even though inode compression type is defined by @compr_type, some
- * nodes of this inode may be compressed with different compressor - this
- * happens if compression type is changed while the inode already has data
- * nodes. But @compr_type will be use for further writes to the inode.
- *
- * Note, do not forget to amend 'zero_ino_node_unused()' function when changing
- * the padding fields.
- */
-struct ubifs_ino_node {
-	struct ubifs_ch ch;
-	__u8 key[UBIFS_MAX_KEY_LEN];
-	__le64 creat_sqnum;
-	__le64 size;
-	__le64 atime_sec;
-	__le64 ctime_sec;
-	__le64 mtime_sec;
-	__le32 atime_nsec;
-	__le32 ctime_nsec;
-	__le32 mtime_nsec;
-	__le32 nlink;
-	__le32 uid;
-	__le32 gid;
-	__le32 mode;
-	__le32 flags;
-	__le32 data_len;
-	__le32 xattr_cnt;
-	__le32 xattr_size;
-	__u8 padding1[4]; /* Watch 'zero_ino_node_unused()' if changing! */
-	__le32 xattr_names;
-	__le16 compr_type;
-	__u8 padding2[26]; /* Watch 'zero_ino_node_unused()' if changing! */
-	__u8 data[];
-} __attribute__ ((packed));
-
-/**
- * struct ubifs_dent_node - directory entry node.
- * @ch: common header
- * @key: node key
- * @inum: target inode number
- * @padding1: reserved for future, zeroes
- * @type: type of the target inode (%UBIFS_ITYPE_REG, %UBIFS_ITYPE_DIR, etc)
- * @nlen: name length
- * @cookie: A 32bits random number, used to construct a 64bits
- *          identifier.
- * @name: zero-terminated name
- *
- * Note, do not forget to amend 'zero_dent_node_unused()' function when
- * changing the padding fields.
- */
-struct ubifs_dent_node {
-	struct ubifs_ch ch;
-	__u8 key[UBIFS_MAX_KEY_LEN];
-	__le64 inum;
-	__u8 padding1;
-	__u8 type;
-	__le16 nlen;
-	__le32 cookie;
-	__u8 name[];
-} __attribute__ ((packed));
-
-/**
- * struct ubifs_data_node - data node.
- * @ch: common header
- * @key: node key
- * @size: uncompressed data size in bytes
- * @compr_type: compression type (%UBIFS_COMPR_NONE, %UBIFS_COMPR_LZO, etc)
- * @compr_size: compressed data size in bytes, only valid when data is encrypted
- * @data: data
- *
- */
-struct ubifs_data_node {
-	struct ubifs_ch ch;
-	__u8 key[UBIFS_MAX_KEY_LEN];
-	__le32 size;
-	__le16 compr_type;
-	__le16 compr_size;
-	__u8 data[];
-} __attribute__ ((packed));
-
-/**
- * struct ubifs_trun_node - truncation node.
- * @ch: common header
- * @inum: truncated inode number
- * @padding: reserved for future, zeroes
- * @old_size: size before truncation
- * @new_size: size after truncation
- *
- * This node exists only in the journal and never goes to the main area. Note,
- * do not forget to amend 'zero_trun_node_unused()' function when changing the
- * padding fields.
- */
-struct ubifs_trun_node {
-	struct ubifs_ch ch;
-	__le32 inum;
-	__u8 padding[12]; /* Watch 'zero_trun_node_unused()' if changing! */
-	__le64 old_size;
-	__le64 new_size;
-} __attribute__ ((packed));
-
-/**
- * struct ubifs_pad_node - padding node.
- * @ch: common header
- * @pad_len: how many bytes after this node are unused (because padded)
- * @padding: reserved for future, zeroes
- */
-struct ubifs_pad_node {
-	struct ubifs_ch ch;
-	__le32 pad_len;
-} __attribute__ ((packed));
-
-/**
- * struct ubifs_sb_node - superblock node.
- * @ch: common header
- * @padding: reserved for future, zeroes
- * @key_hash: type of hash function used in keys
- * @key_fmt: format of the key
- * @flags: file-system flags (%UBIFS_FLG_BIGLPT, etc)
- * @min_io_size: minimal input/output unit size
- * @leb_size: logical eraseblock size in bytes
- * @leb_cnt: count of LEBs used by file-system
- * @max_leb_cnt: maximum count of LEBs used by file-system
- * @max_bud_bytes: maximum amount of data stored in buds
- * @log_lebs: log size in logical eraseblocks
- * @lpt_lebs: number of LEBs used for lprops table
- * @orph_lebs: number of LEBs used for recording orphans
- * @jhead_cnt: count of journal heads
- * @fanout: tree fanout (max. number of links per indexing node)
- * @lsave_cnt: number of LEB numbers in LPT's save table
- * @fmt_version: UBIFS on-flash format version
- * @default_compr: default compression algorithm (%UBIFS_COMPR_LZO, etc)
- * @padding1: reserved for future, zeroes
- * @rp_uid: reserve pool UID
- * @rp_gid: reserve pool GID
- * @rp_size: size of the reserved pool in bytes
- * @padding2: reserved for future, zeroes
- * @time_gran: time granularity in nanoseconds
- * @uuid: UUID generated when the file system image was created
- * @ro_compat_version: UBIFS R/O compatibility version
- * @hmac: HMAC to authenticate the superblock node
- * @hmac_wkm: HMAC of a well known message (the string "UBIFS") as a convenience
- *            to the user to check if the correct key is passed.
- * @hash_algo: The hash algo used for this filesystem (one of enum hash_algo)
- * @hash_mst: hash of the master node, only valid for signed images in which the
- *            master node does not contain a hmac
- */
-struct ubifs_sb_node {
-	struct ubifs_ch ch;
-	__u8 padding[2];
-	__u8 key_hash;
-	__u8 key_fmt;
-	__le32 flags;
-	__le32 min_io_size;
-	__le32 leb_size;
-	__le32 leb_cnt;
-	__le32 max_leb_cnt;
-	__le64 max_bud_bytes;
-	__le32 log_lebs;
-	__le32 lpt_lebs;
-	__le32 orph_lebs;
-	__le32 jhead_cnt;
-	__le32 fanout;
-	__le32 lsave_cnt;
-	__le32 fmt_version;
-	__le16 default_compr;
-	__u8 padding1[2];
-	__le32 rp_uid;
-	__le32 rp_gid;
-	__le64 rp_size;
-	__le32 time_gran;
-	__u8 uuid[16];
-	__le32 ro_compat_version;
-	__u8 hmac[UBIFS_MAX_HMAC_LEN];
-	__u8 hmac_wkm[UBIFS_MAX_HMAC_LEN];
-	__le16 hash_algo;
-	__u8 hash_mst[UBIFS_MAX_HASH_LEN];
-	__u8 padding2[3774];
-} __attribute__ ((packed));
-
-/**
- * struct ubifs_mst_node - master node.
- * @ch: common header
- * @highest_inum: highest inode number in the committed index
- * @cmt_no: commit number
- * @flags: various flags (%UBIFS_MST_DIRTY, etc)
- * @log_lnum: start of the log
- * @root_lnum: LEB number of the root indexing node
- * @root_offs: offset within @root_lnum
- * @root_len: root indexing node length
- * @gc_lnum: LEB reserved for garbage collection (%-1 value means the LEB was
- * not reserved and should be reserved on mount)
- * @ihead_lnum: LEB number of index head
- * @ihead_offs: offset of index head
- * @index_size: size of index on flash
- * @total_free: total free space in bytes
- * @total_dirty: total dirty space in bytes
- * @total_used: total used space in bytes (includes only data LEBs)
- * @total_dead: total dead space in bytes (includes only data LEBs)
- * @total_dark: total dark space in bytes (includes only data LEBs)
- * @lpt_lnum: LEB number of LPT root nnode
- * @lpt_offs: offset of LPT root nnode
- * @nhead_lnum: LEB number of LPT head
- * @nhead_offs: offset of LPT head
- * @ltab_lnum: LEB number of LPT's own lprops table
- * @ltab_offs: offset of LPT's own lprops table
- * @lsave_lnum: LEB number of LPT's save table (big model only)
- * @lsave_offs: offset of LPT's save table (big model only)
- * @lscan_lnum: LEB number of last LPT scan
- * @empty_lebs: number of empty logical eraseblocks
- * @idx_lebs: number of indexing logical eraseblocks
- * @leb_cnt: count of LEBs used by file-system
- * @hash_root_idx: the hash of the root index node
- * @hash_lpt: the hash of the LPT
- * @hmac: HMAC to authenticate the master node
- * @padding: reserved for future, zeroes
- */
-struct ubifs_mst_node {
-	struct ubifs_ch ch;
-	__le64 highest_inum;
-	__le64 cmt_no;
-	__le32 flags;
-	__le32 log_lnum;
-	__le32 root_lnum;
-	__le32 root_offs;
-	__le32 root_len;
-	__le32 gc_lnum;
-	__le32 ihead_lnum;
-	__le32 ihead_offs;
-	__le64 index_size;
-	__le64 total_free;
-	__le64 total_dirty;
-	__le64 total_used;
-	__le64 total_dead;
-	__le64 total_dark;
-	__le32 lpt_lnum;
-	__le32 lpt_offs;
-	__le32 nhead_lnum;
-	__le32 nhead_offs;
-	__le32 ltab_lnum;
-	__le32 ltab_offs;
-	__le32 lsave_lnum;
-	__le32 lsave_offs;
-	__le32 lscan_lnum;
-	__le32 empty_lebs;
-	__le32 idx_lebs;
-	__le32 leb_cnt;
-	__u8 hash_root_idx[UBIFS_MAX_HASH_LEN];
-	__u8 hash_lpt[UBIFS_MAX_HASH_LEN];
-	__u8 hmac[UBIFS_MAX_HMAC_LEN];
-	__u8 padding[152];
-} __attribute__ ((packed));
-
-/**
- * struct ubifs_ref_node - logical eraseblock reference node.
- * @ch: common header
- * @lnum: the referred logical eraseblock number
- * @offs: start offset in the referred LEB
- * @jhead: journal head number
- * @padding: reserved for future, zeroes
- */
-struct ubifs_ref_node {
-	struct ubifs_ch ch;
-	__le32 lnum;
-	__le32 offs;
-	__le32 jhead;
-	__u8 padding[28];
-} __attribute__ ((packed));
-
-/**
- * struct ubifs_auth_node - node for authenticating other nodes
- * @ch: common header
- * @hmac: The HMAC
- */
-struct ubifs_auth_node {
-	struct ubifs_ch ch;
-	__u8 hmac[];
-} __attribute__ ((packed));
-
-/**
- * struct ubifs_sig_node - node for signing other nodes
- * @ch: common header
- * @type: type of the signature, currently only UBIFS_SIGNATURE_TYPE_PKCS7
- * supported
- * @len: The length of the signature data
- * @padding: reserved for future, zeroes
- * @sig: The signature data
- */
-struct ubifs_sig_node {
-	struct ubifs_ch ch;
-	__le32 type;
-	__le32 len;
-	__u8 padding[32];
-	__u8 sig[];
-} __attribute__ ((packed));
-
-/**
- * struct ubifs_branch - key/reference/length branch
- * @lnum: LEB number of the target node
- * @offs: offset within @lnum
- * @len: target node length
- * @key: key
- *
- * In an authenticated UBIFS we have the hash of the referenced node after @key.
- * This can't be added to the struct type definition because @key is a
- * dynamically sized element already.
- */
-struct ubifs_branch {
-	__le32 lnum;
-	__le32 offs;
-	__le32 len;
-	__u8 key[];
-} __attribute__ ((packed));
-
-/**
- * struct ubifs_idx_node - indexing node.
- * @ch: common header
- * @child_cnt: number of child index nodes
- * @level: tree level
- * @branches: LEB number / offset / length / key branches
- */
-struct ubifs_idx_node {
-	struct ubifs_ch ch;
-	__le16 child_cnt;
-	__le16 level;
-	__u8 branches[];
-} __attribute__ ((packed));
-
-/**
- * struct ubifs_cs_node - commit start node.
- * @ch: common header
- * @cmt_no: commit number
- */
-struct ubifs_cs_node {
-	struct ubifs_ch ch;
-	__le64 cmt_no;
-} __attribute__ ((packed));
-
-/**
- * struct ubifs_orph_node - orphan node.
- * @ch: common header
- * @cmt_no: commit number (also top bit is set on the last node of the commit)
- * @inos: inode numbers of orphans
- */
-struct ubifs_orph_node {
-	struct ubifs_ch ch;
-	__le64 cmt_no;
-	__le64 inos[];
-} __attribute__ ((packed));
-
-#endif /* __UBIFS_MEDIA_H__ */