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e2fsprogs/e2fsck/jfs_user.h

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/*
* 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
#include "config.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
#if __STDC_VERSION__ < 199901L
# if __GNUC__ >= 2 || _MSC_VER >= 1300
# define __func__ __FUNCTION__
# else
# define __func__ "<unknown>"
# endif
#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[4096];
};
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)
struct kmem_cache {
unsigned int object_size;
};
#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 struct kmem_cache *kmem_cache_create(const char *name,
unsigned int size,
unsigned int align,
unsigned int flags,
void (*ctor)(void *));
extern void kmem_cache_destroy(struct kmem_cache *s);
extern void *kmem_cache_alloc(struct kmem_cache *cachep, gfp_t flags);
extern void kmem_cache_free(struct kmem_cache *s, void *objp);
extern void *kmalloc(size_t size, gfp_t flags);
extern void kfree(const void *objp);
extern size_t journal_tag_bytes(journal_t *journal);
extern __u32 __hash_32(__u32 val);
extern __u32 hash_32(__u32 val, unsigned int bits);
extern __u32 hash_64(__u64 val, unsigned int bits);
extern void *kmalloc_array(unsigned n, unsigned size, int flags);
extern __u32 jbd2_chksum(journal_t *j, __u32 crc, const void *address,
unsigned int length);
extern void jbd2_descriptor_block_csum_set(journal_t *j,
struct buffer_head *bh);
#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_ struct kmem_cache *
kmem_cache_create(const char *name EXT2FS_ATTR((unused)),
unsigned int size,
unsigned int align EXT2FS_ATTR((unused)),
unsigned int flags EXT2FS_ATTR((unused)),
void (*ctor)(void *) EXT2FS_ATTR((unused)))
{
struct kmem_cache *new_cache;
new_cache = malloc(sizeof(*new_cache));
if (new_cache)
new_cache->object_size = size;
return new_cache;
}
_INLINE_ void kmem_cache_destroy(struct kmem_cache *s)
{
free(s);
}
_INLINE_ void *kmem_cache_alloc(struct kmem_cache *cachep,
gfp_t flags EXT2FS_ATTR((unused)))
{
return malloc(cachep->object_size);
}
_INLINE_ void kmem_cache_free(struct kmem_cache *s EXT2FS_ATTR((unused)),
void *objp)
{
free(objp);
}
_INLINE_ void *kmalloc(size_t size, gfp_t flags EXT2FS_ATTR((unused)))
{
return malloc(size);
}
_INLINE_ void kfree(const void *objp)
{
#ifdef HAVE_INTPTR_T
/*
* Work around a botch in the C standard, which triggers
* compiler warnings. For better or for worse, the kernel
* uses const void * for kfree, while the C standard mandates
* the use of void *. See: https://yarchive.net/comp/const.html
*/
free((void *)(intptr_t)objp);
#else
free((void *)objp);
#endif
}
/* 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);
}
}
_INLINE_ void *kmalloc_array(unsigned n, unsigned size,
int flags EXT2FS_ATTR((unused)))
{
if (n && (~0U)/n < size)
return NULL;
return malloc(n * size);
}
_INLINE_ __u32 jbd2_chksum(journal_t *j EXT2FS_ATTR((unused)),
__u32 crc, const void *address,
unsigned int length)
{
return ext2fs_crc32c_le(crc, address, length);
}
_INLINE_ void jbd2_descriptor_block_csum_set(journal_t *j,
struct buffer_head *bh)
{
struct jbd2_journal_block_tail *tail;
__u32 csum;
if (!jbd2_journal_has_csum_v2or3(j))
return;
tail = (struct jbd2_journal_block_tail *)(bh->b_data + j->j_blocksize -
sizeof(struct jbd2_journal_block_tail));
tail->t_checksum = 0;
csum = jbd2_chksum(j, j->j_csum_seed, bh->b_data, j->j_blocksize);
tail->t_checksum = cpu_to_be32(csum);
}
#undef _INLINE_
#endif
/*
* Kernel compatibility functions are defined in journal.c
*/
int jbd2_journal_bmap(journal_t *journal, unsigned long block,
unsigned long long *phys);
struct buffer_head *getblk(kdev_t ctx, unsigned long long blocknr,
int blocksize);
int sync_blockdev(kdev_t kdev);
void ll_rw_block(int rw, int op_flags, int nr, 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(JBD2_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", \
__func__, __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 jbd2_journal_recover (journal_t *journal);
extern int jbd2_journal_skip_recovery (journal_t *);
/* revoke.c */
extern int jbd2_journal_init_revoke(journal_t *, int);
extern void jbd2_journal_destroy_revoke(journal_t *);
extern void jbd2_journal_destroy_revoke_record_cache(void);
extern void jbd2_journal_destroy_revoke_table_cache(void);
extern int jbd2_journal_init_revoke_record_cache(void);
extern int jbd2_journal_init_revoke_table_cache(void);
extern int jbd2_journal_set_revoke(journal_t *, unsigned long long, tid_t);
extern int jbd2_journal_test_revoke(journal_t *, unsigned long long, tid_t);
extern void jbd2_journal_clear_revoke(journal_t *);
#endif /* _JFS_USER_H */
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