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 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
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 } 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__
65 typedef 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 */
79 extern lkmem_cache_t * do_cache_create(int len);
80 extern void do_cache_destroy(lkmem_cache_t *cache);
81 extern 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
do_cache_create(int len)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
do_cache_destroy(lkmem_cache_t * cache)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 */
journal_tag_bytes(journal_t * journal)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 */
125 int journal_bmap(journal_t *journal, blk_t block, unsigned long *phys);
126 struct buffer_head *getblk(kdev_t ctx, blk_t blocknr, int blocksize);
127 void sync_blockdev(kdev_t kdev);
128 void ll_rw_block(int rw, int dummy, struct buffer_head *bh[]);
129 void mark_buffer_dirty(struct buffer_head *bh);
130 void mark_buffer_uptodate(struct buffer_head *bh, int val);
131 void brelse(struct buffer_head *bh);
132 int buffer_uptodate(struct buffer_head *bh);
133 void 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