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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 
17 struct buffer_head {
18 	char		b_data[8192];
19 	e2fsck_t	b_ctx;
20 	io_channel 	b_io;
21 	int	 	b_size;
22 	blk_t	 	b_blocknr;
23 	int	 	b_dirty;
24 	int	 	b_uptodate;
25 	int	 	b_err;
26 };
27 
28 struct inode {
29 	e2fsck_t	i_ctx;
30 	ext2_ino_t	i_ino;
31 	struct ext2_inode i_ext2;
32 };
33 
34 struct 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 
42 typedef 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 
49 extern e2fsck_t e2fsck_global_ctx;  /* Try your very best not to use this! */
50 
51 typedef struct {
52 	int	object_length;
53 } kmem_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 /*
63  * We use the standard libext2fs portability tricks for inline
64  * functions.
65  */
66 extern kmem_cache_t * do_cache_create(int len);
67 extern void do_cache_destroy(kmem_cache_t *cache);
68 
69 #if (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
70 #ifdef E2FSCK_INCLUDE_INLINE_FUNCS
71 #define _INLINE_ extern
72 #else
73 #ifdef __GNUC__
74 #define _INLINE_ extern __inline__
75 #else				/* For Watcom C */
76 #define _INLINE_ extern inline
77 #endif
78 #endif
79 
do_cache_create(int len)80 _INLINE_ kmem_cache_t * do_cache_create(int len)
81 {
82 	kmem_cache_t *new_cache;
83 	new_cache = malloc(sizeof(*new_cache));
84 	if (new_cache)
85 		new_cache->object_length = len;
86 	return new_cache;
87 }
88 
do_cache_destroy(kmem_cache_t * cache)89 _INLINE_ void do_cache_destroy(kmem_cache_t *cache)
90 {
91 	free(cache);
92 }
93 #undef _INLINE_
94 #endif
95 
96 #define __init
97 
98 /*
99  * Now pull in the real linux/jfs.h definitions.
100  */
101 #include <ext2fs/kernel-jbd.h>
102 
103 /*
104  * Kernel compatibility functions are defined in journal.c
105  */
106 int journal_bmap(journal_t *journal, blk_t block, unsigned long *phys);
107 struct buffer_head *getblk(kdev_t ctx, blk_t blocknr, int blocksize);
108 void sync_blockdev(kdev_t kdev);
109 void ll_rw_block(int rw, int dummy, struct buffer_head *bh[]);
110 void mark_buffer_dirty(struct buffer_head *bh);
111 void mark_buffer_uptodate(struct buffer_head *bh, int val);
112 void brelse(struct buffer_head *bh);
113 int buffer_uptodate(struct buffer_head *bh);
114 void wait_on_buffer(struct buffer_head *bh);
115 
116 /*
117  * Define newer 2.5 interfaces
118  */
119 #define __getblk(dev, blocknr, blocksize) getblk(dev, blocknr, blocksize)
120 #define set_buffer_uptodate(bh) mark_buffer_uptodate(bh, 1)
121