+++ /dev/null
-/*
- * JFFS2 -- Journalling Flash File System, Version 2.
- *
- * Copyright (C) 2001-2003 Red Hat, Inc.
- *
- * Created by David Woodhouse <dwmw2@infradead.org>
- *
- * For licensing information, see the file 'LICENCE' in the
- * jffs2 directory.
- *
- *
- */
-
-#ifndef __LINUX_JFFS2_H__
-#define __LINUX_JFFS2_H__
-
-#define JFFS2_SUPER_MAGIC 0x72b6
-
-/* You must include something which defines the C99 uintXX_t types.
- We don't do it from here because this file is used in too many
- different environments. */
-
-/* Values we may expect to find in the 'magic' field */
-#define JFFS2_OLD_MAGIC_BITMASK 0x1984
-#define JFFS2_MAGIC_BITMASK 0x1985
-#define KSAMTIB_CIGAM_2SFFJ 0x8519 /* For detecting wrong-endian fs */
-#define JFFS2_EMPTY_BITMASK 0xffff
-#define JFFS2_DIRTY_BITMASK 0x0000
-
-/* Summary node MAGIC marker */
-#define JFFS2_SUM_MAGIC 0x02851885
-
-/* We only allow a single char for length, and 0xFF is empty flash so
- we don't want it confused with a real length. Hence max 254.
-*/
-#define JFFS2_MAX_NAME_LEN 254
-
-/* How small can we sensibly write nodes? */
-#define JFFS2_MIN_DATA_LEN 128
-
-#define JFFS2_COMPR_NONE 0x00
-#define JFFS2_COMPR_ZERO 0x01
-#define JFFS2_COMPR_RTIME 0x02
-#define JFFS2_COMPR_RUBINMIPS 0x03
-#define JFFS2_COMPR_COPY 0x04
-#define JFFS2_COMPR_DYNRUBIN 0x05
-#define JFFS2_COMPR_ZLIB 0x06
-/* Compatibility flags. */
-#define JFFS2_COMPAT_MASK 0xc000 /* What do to if an unknown nodetype is found */
-#define JFFS2_NODE_ACCURATE 0x2000
-/* INCOMPAT: Fail to mount the filesystem */
-#define JFFS2_FEATURE_INCOMPAT 0xc000
-/* ROCOMPAT: Mount read-only */
-#define JFFS2_FEATURE_ROCOMPAT 0x8000
-/* RWCOMPAT_COPY: Mount read/write, and copy the node when it's GC'd */
-#define JFFS2_FEATURE_RWCOMPAT_COPY 0x4000
-/* RWCOMPAT_DELETE: Mount read/write, and delete the node when it's GC'd */
-#define JFFS2_FEATURE_RWCOMPAT_DELETE 0x0000
-
-#define JFFS2_NODETYPE_DIRENT (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 1)
-#define JFFS2_NODETYPE_INODE (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 2)
-#define JFFS2_NODETYPE_CLEANMARKER (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 3)
-#define JFFS2_NODETYPE_PADDING (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 4)
-
-#define JFFS2_NODETYPE_SUMMARY (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 6)
-
-#define JFFS2_NODETYPE_XATTR (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 8)
-#define JFFS2_NODETYPE_XREF (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 9)
-
-/* XATTR Related */
-#define JFFS2_XPREFIX_USER 1 /* for "user." */
-#define JFFS2_XPREFIX_SECURITY 2 /* for "security." */
-#define JFFS2_XPREFIX_ACL_ACCESS 3 /* for "system.posix_acl_access" */
-#define JFFS2_XPREFIX_ACL_DEFAULT 4 /* for "system.posix_acl_default" */
-#define JFFS2_XPREFIX_TRUSTED 5 /* for "trusted.*" */
-
-#define JFFS2_ACL_VERSION 0x0001
-
-// Maybe later...
-//#define JFFS2_NODETYPE_CHECKPOINT (JFFS2_FEATURE_RWCOMPAT_DELETE | JFFS2_NODE_ACCURATE | 3)
-//#define JFFS2_NODETYPE_OPTIONS (JFFS2_FEATURE_RWCOMPAT_COPY | JFFS2_NODE_ACCURATE | 4)
-
-
-#define JFFS2_INO_FLAG_PREREAD 1 /* Do read_inode() for this one at
- mount time, don't wait for it to
- happen later */
-#define JFFS2_INO_FLAG_USERCOMPR 2 /* User has requested a specific
- compression type */
-
-
-/* These can go once we've made sure we've caught all uses without
- byteswapping */
-
-typedef uint32_t jint32_t;
-
-typedef uint32_t jmode_t;
-
-typedef uint16_t jint16_t;
-
-struct jffs2_unknown_node
-{
- /* All start like this */
- jint16_t magic;
- jint16_t nodetype;
- jint32_t totlen; /* So we can skip over nodes we don't grok */
- jint32_t hdr_crc;
-};
-
-struct jffs2_raw_dirent
-{
- jint16_t magic;
- jint16_t nodetype; /* == JFFS2_NODETYPE_DIRENT */
- jint32_t totlen;
- jint32_t hdr_crc;
- jint32_t pino;
- jint32_t version;
- jint32_t ino; /* == zero for unlink */
- jint32_t mctime;
- uint8_t nsize;
- uint8_t type;
- uint8_t unused[2];
- jint32_t node_crc;
- jint32_t name_crc;
- uint8_t name[0];
-};
-
-/* The JFFS2 raw inode structure: Used for storage on physical media. */
-/* The uid, gid, atime, mtime and ctime members could be longer, but
- are left like this for space efficiency. If and when people decide
- they really need them extended, it's simple enough to add support for
- a new type of raw node.
-*/
-struct jffs2_raw_inode
-{
- jint16_t magic; /* A constant magic number. */
- jint16_t nodetype; /* == JFFS2_NODETYPE_INODE */
- jint32_t totlen; /* Total length of this node (inc data, etc.) */
- jint32_t hdr_crc;
- jint32_t ino; /* Inode number. */
- jint32_t version; /* Version number. */
- jmode_t mode; /* The file's type or mode. */
- jint16_t uid; /* The file's owner. */
- jint16_t gid; /* The file's group. */
- jint32_t isize; /* Total resultant size of this inode (used for truncations) */
- jint32_t atime; /* Last access time. */
- jint32_t mtime; /* Last modification time. */
- jint32_t ctime; /* Change time. */
- jint32_t offset; /* Where to begin to write. */
- jint32_t csize; /* (Compressed) data size */
- jint32_t dsize; /* Size of the node's data. (after decompression) */
- uint8_t compr; /* Compression algorithm used */
- uint8_t usercompr; /* Compression algorithm requested by the user */
- jint16_t flags; /* See JFFS2_INO_FLAG_* */
- jint32_t data_crc; /* CRC for the (compressed) data. */
- jint32_t node_crc; /* CRC for the raw inode (excluding data) */
- uint8_t data[0];
-};
-
-struct jffs2_raw_xattr {
- jint16_t magic;
- jint16_t nodetype; /* = JFFS2_NODETYPE_XATTR */
- jint32_t totlen;
- jint32_t hdr_crc;
- jint32_t xid; /* XATTR identifier number */
- jint32_t version;
- uint8_t xprefix;
- uint8_t name_len;
- jint16_t value_len;
- jint32_t data_crc;
- jint32_t node_crc;
- uint8_t data[0];
-} __attribute__((packed));
-
-struct jffs2_raw_xref
-{
- jint16_t magic;
- jint16_t nodetype; /* = JFFS2_NODETYPE_XREF */
- jint32_t totlen;
- jint32_t hdr_crc;
- jint32_t ino; /* inode number */
- jint32_t xid; /* XATTR identifier number */
- jint32_t xseqno; /* xref sequencial number */
- jint32_t node_crc;
-} __attribute__((packed));
-
-struct jffs2_raw_summary
-{
- jint16_t magic;
- jint16_t nodetype; /* = JFFS2_NODETYPE_SUMMARY */
- jint32_t totlen;
- jint32_t hdr_crc;
- jint32_t sum_num; /* number of sum entries*/
- jint32_t cln_mkr; /* clean marker size, 0 = no cleanmarker */
- jint32_t padded; /* sum of the size of padding nodes */
- jint32_t sum_crc; /* summary information crc */
- jint32_t node_crc; /* node crc */
- jint32_t sum[0]; /* inode summary info */
-};
-
-union jffs2_node_union
-{
- struct jffs2_raw_inode i;
- struct jffs2_raw_dirent d;
- struct jffs2_raw_xattr x;
- struct jffs2_raw_xref r;
- struct jffs2_raw_summary s;
- struct jffs2_unknown_node u;
-};
-
-/* Data payload for device nodes. */
-union jffs2_device_node {
- jint16_t old;
- jint32_t new;
-};
-
-#endif /* __LINUX_JFFS2_H__ */
projects / openwrt.git / blobdiff