blob: d30b728d1e8525210964d377f8612ee0abe6348c [file] [log] [blame]
/*
* Compatibility header file for e2fsck which should be included
* instead of linux/jfs.h
*
* Copyright (C) 2000 Stephen C. Tweedie
*
* This file may be redistributed under the terms of the
* GNU General Public License version 2 or at your discretion
* any later version.
*/
#ifndef _JFS_USER_H
#define _JFS_USER_H
#ifdef DEBUGFS
#include <stdio.h>
#include <stdlib.h>
#if EXT2_FLAT_INCLUDES
#include "ext2_fs.h"
#include "ext2fs.h"
#include "blkid.h"
#else
#include "ext2fs/ext2_fs.h"
#include "ext2fs/ext2fs.h"
#include "blkid/blkid.h"
#endif
#else
/*
* Pull in the definition of the e2fsck context structure
*/
#include "e2fsck.h"
#endif
struct buffer_head {
#ifdef DEBUGFS
ext2_filsys b_fs;
#else
e2fsck_t b_ctx;
#endif
io_channel b_io;
int b_size;
int b_err;
unsigned int b_dirty:1;
unsigned int b_uptodate:1;
unsigned long long b_blocknr;
char b_data[1024];
};
struct inode {
#ifdef DEBUGFS
ext2_filsys i_fs;
#else
e2fsck_t i_ctx;
#endif
ext2_ino_t i_ino;
struct ext2_inode i_ext2;
};
struct kdev_s {
#ifdef DEBUGFS
ext2_filsys k_fs;
#else
e2fsck_t k_ctx;
#endif
int k_dev;
};
#define K_DEV_FS 1
#define K_DEV_JOURNAL 2
#define lock_buffer(bh) do {} while (0)
#define unlock_buffer(bh) do {} while (0)
#define buffer_req(bh) 1
#define do_readahead(journal, start) do {} while (0)
typedef struct {
int object_length;
} lkmem_cache_t;
#define kmem_cache_alloc(cache, flags) malloc((cache)->object_length)
#define kmem_cache_free(cache, obj) free(obj)
#define kmem_cache_create(name, len, a, b, c) do_cache_create(len)
#define kmem_cache_destroy(cache) do_cache_destroy(cache)
#define kmalloc(len, flags) malloc(len)
#define kfree(p) free(p)
#define cond_resched() do { } while (0)
#define __init
/*
* Now pull in the real linux/jfs.h definitions.
*/
#include <ext2fs/kernel-jbd.h>
/*
* We use the standard libext2fs portability tricks for inline
* functions.
*/
#ifdef NO_INLINE_FUNCS
extern lkmem_cache_t *do_cache_create(int len);
extern void do_cache_destroy(lkmem_cache_t *cache);
extern size_t journal_tag_bytes(journal_t *journal);
#endif
#if (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
#ifdef E2FSCK_INCLUDE_INLINE_FUNCS
#if (__STDC_VERSION__ >= 199901L)
#define _INLINE_ extern inline
#else
#define _INLINE_ inline
#endif
#else /* !E2FSCK_INCLUDE_INLINE FUNCS */
#if (__STDC_VERSION__ >= 199901L)
#define _INLINE_ inline
#else /* not C99 */
#ifdef __GNUC__
#define _INLINE_ extern __inline__
#else /* For Watcom C */
#define _INLINE_ extern inline
#endif /* __GNUC__ */
#endif /* __STDC_VERSION__ >= 199901L */
#endif /* E2FSCK_INCLUDE_INLINE_FUNCS */
_INLINE_ lkmem_cache_t *do_cache_create(int len)
{
lkmem_cache_t *new_cache;
new_cache = malloc(sizeof(*new_cache));
if (new_cache)
new_cache->object_length = len;
return new_cache;
}
_INLINE_ void do_cache_destroy(lkmem_cache_t *cache)
{
free(cache);
}
/* generic hashing taken from the Linux kernel */
#define GOLDEN_RATIO_32 0x61C88647
#define GOLDEN_RATIO_64 0x61C8864680B583EBull
_INLINE_ __u32 __hash_32(__u32 val)
{
return val * GOLDEN_RATIO_32;
}
_INLINE_ __u32 hash_32(__u32 val, unsigned int bits)
{
/* High bits are more random, so use them. */
return __hash_32(val) >> (32 - bits);
}
_INLINE_ __u32 hash_64(__u64 val, unsigned int bits)
{
if (sizeof(long) >= 8) {
/* 64x64-bit multiply is efficient on all 64-bit processors */
return val * GOLDEN_RATIO_64 >> (64 - bits);
} else {
/* Hash 64 bits using only 32x32-bit multiply. */
return hash_32((__u32)val ^ __hash_32(val >> 32), bits);
}
}
#undef _INLINE_
#endif
/*
* Kernel compatibility functions are defined in journal.c
*/
int journal_bmap(journal_t *journal, blk64_t block, unsigned long long *phys);
struct buffer_head *getblk(kdev_t ctx, blk64_t blocknr, int blocksize);
int sync_blockdev(kdev_t kdev);
void ll_rw_block(int rw, int dummy, struct buffer_head *bh[]);
void mark_buffer_dirty(struct buffer_head *bh);
void mark_buffer_uptodate(struct buffer_head *bh, int val);
void brelse(struct buffer_head *bh);
int buffer_uptodate(struct buffer_head *bh);
void wait_on_buffer(struct buffer_head *bh);
/*
* Define newer 2.5 interfaces
*/
#define __getblk(dev, blocknr, blocksize) getblk(dev, blocknr, blocksize)
#define set_buffer_uptodate(bh) mark_buffer_uptodate(bh, 1)
#ifdef DEBUGFS
#include <assert.h>
#undef J_ASSERT
#define J_ASSERT(x) assert(x)
#define JSB_HAS_INCOMPAT_FEATURE(jsb, mask) \
((jsb)->s_header.h_blocktype == ext2fs_cpu_to_be32(JFS_SUPERBLOCK_V2) && \
((jsb)->s_feature_incompat & ext2fs_cpu_to_be32((mask))))
#else /* !DEBUGFS */
extern e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */
#define J_ASSERT(assert) \
do { if (!(assert)) { \
printf ("Assertion failure in %s() at %s line %d: " \
"\"%s\"\n", \
__FUNCTION__, __FILE__, __LINE__, # assert); \
fatal_error(e2fsck_global_ctx, 0); \
} } while (0)
#endif /* DEBUGFS */
#ifndef EFSBADCRC
#define EFSBADCRC EXT2_ET_BAD_CRC
#endif
#ifndef EFSCORRUPTED
#define EFSCORRUPTED EXT2_ET_FILESYSTEM_CORRUPTED
#endif
/* recovery.c */
extern int journal_recover (journal_t *journal);
extern int journal_skip_recovery (journal_t *);
/* revoke.c */
extern int journal_init_revoke(journal_t *, int);
extern void journal_destroy_revoke(journal_t *);
extern void journal_destroy_revoke_caches(void);
extern int journal_init_revoke_caches(void);
extern int journal_set_revoke(journal_t *, unsigned long long, tid_t);
extern int journal_test_revoke(journal_t *, unsigned long long, tid_t);
extern void journal_clear_revoke(journal_t *);
#endif /* _JFS_USER_H */