diff options
Diffstat (limited to 'include/linux/jffs2.h')
| -rw-r--r-- | include/linux/jffs2.h | 223 |
1 files changed, 0 insertions, 223 deletions
diff --git a/include/linux/jffs2.h b/include/linux/jffs2.h deleted file mode 100644 index a18b719f49d4..000000000000 --- a/include/linux/jffs2.h +++ /dev/null @@ -1,223 +0,0 @@ -/* - * JFFS2 -- Journalling Flash File System, Version 2. - * - * Copyright © 2001-2007 Red Hat, Inc. - * Copyright © 2004-2010 David Woodhouse <dwmw2@infradead.org> - * - * 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__ - -#include <linux/types.h> -#include <linux/magic.h> - -/* 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 -#define JFFS2_COMPR_LZO 0x07 -/* 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 struct { - __u32 v32; -} __attribute__((packed)) jint32_t; - -typedef struct { - __u32 m; -} __attribute__((packed)) jmode_t; - -typedef struct { - __u16 v16; -} __attribute__((packed)) 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; - __u8 nsize; - __u8 type; - __u8 unused[2]; - jint32_t node_crc; - jint32_t name_crc; - __u8 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) */ - __u8 compr; /* Compression algorithm used */ - __u8 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) */ - __u8 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; - __u8 xprefix; - __u8 name_len; - jint16_t value_len; - jint32_t data_crc; - jint32_t node_crc; - __u8 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 sequential 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_id; - jint32_t new_id; -}; - -#endif /* __LINUX_JFFS2_H__ */ |