mirror of
https://github.com/AsahiLinux/u-boot
synced 2024-12-14 23:33:00 +00:00
163 lines
4.1 KiB
C
163 lines
4.1 KiB
C
/*
|
|
* JFFS2 -- Journalling Flash File System, Version 2.
|
|
*
|
|
* Copyright © 2004 Ferenc Havasi <havasi@inf.u-szeged.hu>,
|
|
* Zoltan Sogor <weth@inf.u-szeged.hu>,
|
|
* Patrik Kluba <pajko@halom.u-szeged.hu>,
|
|
* University of Szeged, Hungary
|
|
*
|
|
* For licensing information, see the file 'LICENCE' in this directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef JFFS2_SUMMARY_H
|
|
#define JFFS2_SUMMARY_H
|
|
|
|
#define BLK_STATE_ALLFF 0
|
|
#define BLK_STATE_CLEAN 1
|
|
#define BLK_STATE_PARTDIRTY 2
|
|
#define BLK_STATE_CLEANMARKER 3
|
|
#define BLK_STATE_ALLDIRTY 4
|
|
#define BLK_STATE_BADBLOCK 5
|
|
|
|
#define JFFS2_SUMMARY_NOSUM_SIZE 0xffffffff
|
|
#define JFFS2_SUMMARY_INODE_SIZE (sizeof(struct jffs2_sum_inode_flash))
|
|
#define JFFS2_SUMMARY_DIRENT_SIZE(x) (sizeof(struct jffs2_sum_dirent_flash) + (x))
|
|
#define JFFS2_SUMMARY_XATTR_SIZE (sizeof(struct jffs2_sum_xattr_flash))
|
|
#define JFFS2_SUMMARY_XREF_SIZE (sizeof(struct jffs2_sum_xref_flash))
|
|
|
|
/* Summary structures used on flash */
|
|
|
|
struct jffs2_sum_unknown_flash
|
|
{
|
|
__u16 nodetype; /* node type */
|
|
};
|
|
|
|
struct jffs2_sum_inode_flash
|
|
{
|
|
__u16 nodetype; /* node type */
|
|
__u32 inode; /* inode number */
|
|
__u32 version; /* inode version */
|
|
__u32 offset; /* offset on jeb */
|
|
__u32 totlen; /* record length */
|
|
} __attribute__((packed));
|
|
|
|
struct jffs2_sum_dirent_flash
|
|
{
|
|
__u16 nodetype; /* == JFFS_NODETYPE_DIRENT */
|
|
__u32 totlen; /* record length */
|
|
__u32 offset; /* offset on jeb */
|
|
__u32 pino; /* parent inode */
|
|
__u32 version; /* dirent version */
|
|
__u32 ino; /* == zero for unlink */
|
|
uint8_t nsize; /* dirent name size */
|
|
uint8_t type; /* dirent type */
|
|
uint8_t name[0]; /* dirent name */
|
|
} __attribute__((packed));
|
|
|
|
struct jffs2_sum_xattr_flash
|
|
{
|
|
__u16 nodetype; /* == JFFS2_NODETYPE_XATR */
|
|
__u32 xid; /* xattr identifier */
|
|
__u32 version; /* version number */
|
|
__u32 offset; /* offset on jeb */
|
|
__u32 totlen; /* node length */
|
|
} __attribute__((packed));
|
|
|
|
struct jffs2_sum_xref_flash
|
|
{
|
|
__u16 nodetype; /* == JFFS2_NODETYPE_XREF */
|
|
__u32 offset; /* offset on jeb */
|
|
} __attribute__((packed));
|
|
|
|
union jffs2_sum_flash
|
|
{
|
|
struct jffs2_sum_unknown_flash u;
|
|
struct jffs2_sum_inode_flash i;
|
|
struct jffs2_sum_dirent_flash d;
|
|
struct jffs2_sum_xattr_flash x;
|
|
struct jffs2_sum_xref_flash r;
|
|
};
|
|
|
|
/* Summary structures used in the memory */
|
|
|
|
struct jffs2_sum_unknown_mem
|
|
{
|
|
union jffs2_sum_mem *next;
|
|
__u16 nodetype; /* node type */
|
|
};
|
|
|
|
struct jffs2_sum_inode_mem
|
|
{
|
|
union jffs2_sum_mem *next;
|
|
__u16 nodetype; /* node type */
|
|
__u32 inode; /* inode number */
|
|
__u32 version; /* inode version */
|
|
__u32 offset; /* offset on jeb */
|
|
__u32 totlen; /* record length */
|
|
} __attribute__((packed));
|
|
|
|
struct jffs2_sum_dirent_mem
|
|
{
|
|
union jffs2_sum_mem *next;
|
|
__u16 nodetype; /* == JFFS_NODETYPE_DIRENT */
|
|
__u32 totlen; /* record length */
|
|
__u32 offset; /* ofset on jeb */
|
|
__u32 pino; /* parent inode */
|
|
__u32 version; /* dirent version */
|
|
__u32 ino; /* == zero for unlink */
|
|
uint8_t nsize; /* dirent name size */
|
|
uint8_t type; /* dirent type */
|
|
uint8_t name[0]; /* dirent name */
|
|
} __attribute__((packed));
|
|
|
|
struct jffs2_sum_xattr_mem
|
|
{
|
|
union jffs2_sum_mem *next;
|
|
__u16 nodetype;
|
|
__u32 xid;
|
|
__u32 version;
|
|
__u32 offset;
|
|
__u32 totlen;
|
|
} __attribute__((packed));
|
|
|
|
struct jffs2_sum_xref_mem
|
|
{
|
|
union jffs2_sum_mem *next;
|
|
__u16 nodetype;
|
|
__u32 offset;
|
|
} __attribute__((packed));
|
|
|
|
union jffs2_sum_mem
|
|
{
|
|
struct jffs2_sum_unknown_mem u;
|
|
struct jffs2_sum_inode_mem i;
|
|
struct jffs2_sum_dirent_mem d;
|
|
struct jffs2_sum_xattr_mem x;
|
|
struct jffs2_sum_xref_mem r;
|
|
};
|
|
|
|
/* Summary related information stored in superblock */
|
|
|
|
struct jffs2_summary
|
|
{
|
|
uint32_t sum_size; /* collected summary information for nextblock */
|
|
uint32_t sum_num;
|
|
uint32_t sum_padded;
|
|
union jffs2_sum_mem *sum_list_head;
|
|
union jffs2_sum_mem *sum_list_tail;
|
|
|
|
__u32 *sum_buf; /* buffer for writing out summary */
|
|
};
|
|
|
|
/* Summary marker is stored at the end of every sumarized erase block */
|
|
|
|
struct jffs2_sum_marker
|
|
{
|
|
__u32 offset; /* offset of the summary node in the jeb */
|
|
__u32 magic; /* == JFFS2_SUM_MAGIC */
|
|
};
|
|
|
|
#define JFFS2_SUMMARY_FRAME_SIZE (sizeof(struct jffs2_raw_summary) + sizeof(struct jffs2_sum_marker))
|
|
|
|
#endif /* JFFS2_SUMMARY_H */
|