jfs_user.h revision 3b693d0b03569795d04920a04a0a21e5f64ffedc 
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	unsigned long long 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
64typedef unsigned int __be32;
65typedef __u64 __be64;
66
67#define __init
68
69/*
70 * Now pull in the real linux/jfs.h definitions.
71 */
72#include <ext2fs/kernel-jbd.h>
73
74/*
75 * We use the standard libext2fs portability tricks for inline
76 * functions.
77 */
78extern lkmem_cache_t * do_cache_create(int len);
79extern void do_cache_destroy(lkmem_cache_t *cache);
80extern size_t journal_tag_bytes(journal_t *journal);
81
82#if (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
83#ifdef E2FSCK_INCLUDE_INLINE_FUNCS
84#define _INLINE_ extern
85#else
86#ifdef __GNUC__
87#define _INLINE_ extern __inline__
88#else				/* For Watcom C */
89#define _INLINE_ extern inline
90#endif
91#endif
92
93_INLINE_ lkmem_cache_t * do_cache_create(int len)
94{
95	lkmem_cache_t *new_cache;
96	new_cache = malloc(sizeof(*new_cache));
97	if (new_cache)
98		new_cache->object_length = len;
99	return new_cache;
100}
101
102_INLINE_ void do_cache_destroy(lkmem_cache_t *cache)
103{
104	free(cache);
105}
106
107/*
108 * helper functions to deal with 32 or 64bit block numbers.
109 */
110_INLINE_ size_t journal_tag_bytes(journal_t *journal)
111{
112	if (JFS_HAS_INCOMPAT_FEATURE(journal, JFS_FEATURE_INCOMPAT_64BIT))
113		return JBD_TAG_SIZE64;
114	else
115		return JBD_TAG_SIZE32;
116}
117
118#undef _INLINE_
119#endif
120
121/*
122 * Kernel compatibility functions are defined in journal.c
123 */
124int journal_bmap(journal_t *journal, blk64_t block, unsigned long long *phys);
125struct buffer_head *getblk(kdev_t ctx, blk64_t blocknr, int blocksize);
126void sync_blockdev(kdev_t kdev);
127void ll_rw_block(int rw, int dummy, struct buffer_head *bh[]);
128void mark_buffer_dirty(struct buffer_head *bh);
129void mark_buffer_uptodate(struct buffer_head *bh, int val);
130void brelse(struct buffer_head *bh);
131int buffer_uptodate(struct buffer_head *bh);
132void wait_on_buffer(struct buffer_head *bh);
133
134/*
135 * Define newer 2.5 interfaces
136 */
137#define __getblk(dev, blocknr, blocksize) getblk(dev, blocknr, blocksize)
138#define set_buffer_uptodate(bh) mark_buffer_uptodate(bh, 1)
139