jfs_user.h revision a6ce1349539f866334ef3d5758bc2ee44a454acd 
1/*
2 * Compatibility header file for e2fsck which should be included
3 * instead of linux/jfs.h
4 *
5 * Copyright (C) 2000 Stephen C. Tweedie
6 *
7 * This file may be redistributed under the terms of the
8 * GNU General Public License version 2 or at your discretion
9 * any later version.
10 */
11
12/*
13 * Pull in the definition of the e2fsck context structure
14 */
15#include "e2fsck.h"
16
17struct buffer_head {
18	e2fsck_t	b_ctx;
19	io_channel 	b_io;
20	int	 	b_size;
21	blk_t	 	b_blocknr;
22	int	 	b_dirty;
23	int	 	b_uptodate;
24	int	 	b_err;
25	char		b_data[1024];
26};
27
28struct inode {
29	e2fsck_t	i_ctx;
30	ext2_ino_t	i_ino;
31	struct ext2_inode i_ext2;
32};
33
34struct kdev_s {
35	e2fsck_t	k_ctx;
36	int		k_dev;
37};
38
39#define K_DEV_FS	1
40#define K_DEV_JOURNAL	2
41
42typedef struct kdev_s *kdev_t;
43
44#define lock_buffer(bh) do {} while(0)
45#define unlock_buffer(bh) do {} while(0)
46#define buffer_req(bh) 1
47#define do_readahead(journal, start) do {} while(0)
48
49extern e2fsck_t e2fsck_global_ctx;  /* Try your very best not to use this! */
50
51typedef struct {
52	int	object_length;
53} lkmem_cache_t;
54
55#define kmem_cache_alloc(cache,flags) malloc((cache)->object_length)
56#define kmem_cache_free(cache,obj) free(obj)
57#define kmem_cache_create(name,len,a,b,c,d) do_cache_create(len)
58#define kmem_cache_destroy(cache) do_cache_destroy(cache)
59#define kmalloc(len,flags) malloc(len)
60#define kfree(p) free(p)
61
62#define cond_resched()	do { } while (0)
63
64#ifndef __BIONIC__
65typedef unsigned int __be32;
66#endif
67
68#define __init
69
70/*
71 * Now pull in the real linux/jfs.h definitions.
72 */
73#include <ext2fs/kernel-jbd.h>
74
75/*
76 * We use the standard libext2fs portability tricks for inline
77 * functions.
78 */
79extern lkmem_cache_t * do_cache_create(int len);
80extern void do_cache_destroy(lkmem_cache_t *cache);
81extern size_t journal_tag_bytes(journal_t *journal);
82
83#if (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
84#ifdef E2FSCK_INCLUDE_INLINE_FUNCS
85#define _INLINE_ extern
86#else
87#ifdef __GNUC__
88#define _INLINE_ extern __inline__
89#else				/* For Watcom C */
90#define _INLINE_ extern inline
91#endif
92#endif
93
94_INLINE_ lkmem_cache_t * do_cache_create(int len)
95{
96	lkmem_cache_t *new_cache;
97	new_cache = malloc(sizeof(*new_cache));
98	if (new_cache)
99		new_cache->object_length = len;
100	return new_cache;
101}
102
103_INLINE_ void do_cache_destroy(lkmem_cache_t *cache)
104{
105	free(cache);
106}
107
108/*
109 * helper functions to deal with 32 or 64bit block numbers.
110 */
111_INLINE_ size_t journal_tag_bytes(journal_t *journal)
112{
113	if (JFS_HAS_INCOMPAT_FEATURE(journal, JFS_FEATURE_INCOMPAT_64BIT))
114		return JBD_TAG_SIZE64;
115	else
116		return JBD_TAG_SIZE32;
117}
118
119#undef _INLINE_
120#endif
121
122/*
123 * Kernel compatibility functions are defined in journal.c
124 */
125int journal_bmap(journal_t *journal, blk_t block, unsigned long *phys);
126struct buffer_head *getblk(kdev_t ctx, blk_t blocknr, int blocksize);
127void sync_blockdev(kdev_t kdev);
128void ll_rw_block(int rw, int dummy, struct buffer_head *bh[]);
129void mark_buffer_dirty(struct buffer_head *bh);
130void mark_buffer_uptodate(struct buffer_head *bh, int val);
131void brelse(struct buffer_head *bh);
132int buffer_uptodate(struct buffer_head *bh);
133void wait_on_buffer(struct buffer_head *bh);
134
135/*
136 * Define newer 2.5 interfaces
137 */
138#define __getblk(dev, blocknr, blocksize) getblk(dev, blocknr, blocksize)
139#define set_buffer_uptodate(bh) mark_buffer_uptodate(bh, 1)
140