mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-11-25 14:10:43 +00:00
218 lines
7.6 KiB
C
218 lines
7.6 KiB
C
/*
|
|
* JFFS2 -- Journalling Flash File System, Version 2.
|
|
*
|
|
* Copyright (C) 2001 Red Hat, Inc.
|
|
*
|
|
* Created by David Woodhouse <dwmw2@cambridge.redhat.com>
|
|
*
|
|
* The original JFFS, from which the design for JFFS2 was derived,
|
|
* was designed and implemented by Axis Communications AB.
|
|
*
|
|
* The contents of this file are subject to the Red Hat eCos Public
|
|
* License Version 1.1 (the "Licence"); you may not use this file
|
|
* except in compliance with the Licence. You may obtain a copy of
|
|
* the Licence at http://www.redhat.com/
|
|
*
|
|
* Software distributed under the Licence is distributed on an "AS IS"
|
|
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied.
|
|
* See the Licence for the specific language governing rights and
|
|
* limitations under the Licence.
|
|
*
|
|
* The Original Code is JFFS2 - Journalling Flash File System, version 2
|
|
*
|
|
* Alternatively, the contents of this file may be used under the
|
|
* terms of the GNU General Public License version 2 (the "GPL"), in
|
|
* which case the provisions of the GPL are applicable instead of the
|
|
* above. If you wish to allow the use of your version of this file
|
|
* only under the terms of the GPL and not to allow others to use your
|
|
* version of this file under the RHEPL, indicate your decision by
|
|
* deleting the provisions above and replace them with the notice and
|
|
* other provisions required by the GPL. If you do not delete the
|
|
* provisions above, a recipient may use your version of this file
|
|
* under either the RHEPL or the GPL.
|
|
*
|
|
* $Id: jffs2.h,v 1.2 2002/01/17 00:53:20 nyet Exp $
|
|
*
|
|
*/
|
|
|
|
#ifndef __LINUX_JFFS2_H__
|
|
#define __LINUX_JFFS2_H__
|
|
|
|
#include <asm/types.h>
|
|
#include <jffs2/load_kernel.h>
|
|
|
|
#define JFFS2_SUPER_MAGIC 0x72b6
|
|
|
|
/* 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 0x5981 /* For detecting wrong-endian fs */
|
|
#define JFFS2_EMPTY_BITMASK 0xffff
|
|
#define JFFS2_DIRTY_BITMASK 0x0000
|
|
|
|
/* 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
|
|
#if defined(CONFIG_JFFS2_LZO_LZARI)
|
|
#define JFFS2_COMPR_LZO 0x07
|
|
#define JFFS2_COMPR_LZARI 0x08
|
|
#define JFFS2_NUM_COMPR 9
|
|
#else
|
|
#define JFFS2_NUM_COMPR 7
|
|
#endif
|
|
|
|
/* 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)
|
|
|
|
/* 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) */
|
|
|
|
/* Same as the non_ECC versions, but with extra space for real
|
|
* ECC instead of just the checksum. For use on NAND flash
|
|
*/
|
|
/*#define JFFS2_NODETYPE_DIRENT_ECC (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 5) */
|
|
/*#define JFFS2_NODETYPE_INODE_ECC (JFFS2_FEATURE_INCOMPAT | JFFS2_NODE_ACCURATE | 6) */
|
|
|
|
#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 */
|
|
|
|
|
|
struct jffs2_unknown_node
|
|
{
|
|
/* All start like this */
|
|
__u16 magic;
|
|
__u16 nodetype;
|
|
__u32 totlen; /* So we can skip over nodes we don't grok */
|
|
__u32 hdr_crc;
|
|
} __attribute__((packed));
|
|
|
|
struct jffs2_raw_dirent
|
|
{
|
|
__u16 magic;
|
|
__u16 nodetype; /* == JFFS_NODETYPE_DIRENT */
|
|
__u32 totlen;
|
|
__u32 hdr_crc;
|
|
__u32 pino;
|
|
__u32 version;
|
|
__u32 ino; /* == zero for unlink */
|
|
__u32 mctime;
|
|
__u8 nsize;
|
|
__u8 type;
|
|
__u8 unused[2];
|
|
__u32 node_crc;
|
|
__u32 name_crc;
|
|
__u8 name[0];
|
|
} __attribute__((packed));
|
|
|
|
/* 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
|
|
{
|
|
__u16 magic; /* A constant magic number. */
|
|
__u16 nodetype; /* == JFFS_NODETYPE_INODE */
|
|
__u32 totlen; /* Total length of this node (inc data, etc.) */
|
|
__u32 hdr_crc;
|
|
__u32 ino; /* Inode number. */
|
|
__u32 version; /* Version number. */
|
|
__u32 mode; /* The file's type or mode. */
|
|
__u16 uid; /* The file's owner. */
|
|
__u16 gid; /* The file's group. */
|
|
__u32 isize; /* Total resultant size of this inode (used for truncations) */
|
|
__u32 atime; /* Last access time. */
|
|
__u32 mtime; /* Last modification time. */
|
|
__u32 ctime; /* Change time. */
|
|
__u32 offset; /* Where to begin to write. */
|
|
__u32 csize; /* (Compressed) data size */
|
|
__u32 dsize; /* Size of the node's data. (after decompression) */
|
|
__u8 compr; /* Compression algorithm used */
|
|
__u8 usercompr; /* Compression algorithm requested by the user */
|
|
__u16 flags; /* See JFFS2_INO_FLAG_* */
|
|
__u32 data_crc; /* CRC for the (compressed) data. */
|
|
__u32 node_crc; /* CRC for the raw inode (excluding data) */
|
|
/* __u8 data[dsize]; */
|
|
} __attribute__((packed));
|
|
|
|
union jffs2_node_union {
|
|
struct jffs2_raw_inode i;
|
|
struct jffs2_raw_dirent d;
|
|
struct jffs2_unknown_node u;
|
|
} __attribute__((packed));
|
|
|
|
enum
|
|
{
|
|
DT_UNKNOWN = 0,
|
|
# define DT_UNKNOWN DT_UNKNOWN
|
|
DT_FIFO = 1,
|
|
# define DT_FIFO DT_FIFO
|
|
DT_CHR = 2,
|
|
# define DT_CHR DT_CHR
|
|
DT_DIR = 4,
|
|
# define DT_DIR DT_DIR
|
|
DT_BLK = 6,
|
|
# define DT_BLK DT_BLK
|
|
DT_REG = 8,
|
|
# define DT_REG DT_REG
|
|
DT_LNK = 10,
|
|
# define DT_LNK DT_LNK
|
|
DT_SOCK = 12,
|
|
# define DT_SOCK DT_SOCK
|
|
DT_WHT = 14
|
|
# define DT_WHT DT_WHT
|
|
};
|
|
|
|
|
|
u32 jffs2_1pass_ls(struct part_info *part,const char *fname);
|
|
u32 jffs2_1pass_load(char *dest, struct part_info *part,const char *fname);
|
|
u32 jffs2_1pass_info(struct part_info *part);
|
|
|
|
void rtime_decompress(unsigned char *data_in, unsigned char *cpage_out,
|
|
u32 srclen, u32 destlen);
|
|
void rubin_do_decompress(unsigned char *bits, unsigned char *in,
|
|
unsigned char *page_out, __u32 destlen);
|
|
void dynrubin_decompress(unsigned char *data_in, unsigned char *cpage_out,
|
|
unsigned long sourcelen, unsigned long dstlen);
|
|
long zlib_decompress(unsigned char *data_in, unsigned char *cpage_out,
|
|
__u32 srclen, __u32 destlen);
|
|
#if defined(CONFIG_JFFS2_LZO_LZARI)
|
|
int lzo_decompress(unsigned char *data_in, unsigned char *cpage_out,
|
|
u32 srclen, u32 destlen);
|
|
int lzari_decompress(unsigned char *data_in, unsigned char *cpage_out,
|
|
u32 srclen, u32 destlen);
|
|
#endif
|
|
|
|
char *mkmodestr(unsigned long mode, char *str);
|
|
#endif /* __LINUX_JFFS2_H__ */
|