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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  	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  
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  typedef __u64 __be64;
67  #endif
68  
69  #define __init
70  
71  /*
72   * Now pull in the real linux/jfs.h definitions.
73   */
74  #include <ext2fs/kernel-jbd.h>
75  
76  /*
77   * We use the standard libext2fs portability tricks for inline
78   * functions.
79   */
80  #ifdef NO_INLINE_FUNCS
81  extern lkmem_cache_t * do_cache_create(int len);
82  extern void do_cache_destroy(lkmem_cache_t *cache);
83  extern size_t journal_tag_bytes(journal_t *journal);
84  #endif
85  
86  #if (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
87  #ifdef E2FSCK_INCLUDE_INLINE_FUNCS
88  #if (__STDC_VERSION__ >= 199901L)
89  #define _INLINE_ extern inline
90  #else
91  #define _INLINE_ inline
92  #endif
93  #else /* !E2FSCK_INCLUDE_INLINE FUNCS */
94  #if (__STDC_VERSION__ >= 199901L)
95  #define _INLINE_ inline
96  #else /* not C99 */
97  #ifdef __GNUC__
98  #define _INLINE_ extern __inline__
99  #else				/* For Watcom C */
100  #define _INLINE_ extern inline
101  #endif /* __GNUC__ */
102  #endif /* __STDC_VERSION__ >= 199901L */
103  #endif /* E2FSCK_INCLUDE_INLINE_FUNCS */
104  
105  
do_cache_create(int len)106  _INLINE_ lkmem_cache_t * do_cache_create(int len)
107  {
108  	lkmem_cache_t *new_cache;
109  	new_cache = malloc(sizeof(*new_cache));
110  	if (new_cache)
111  		new_cache->object_length = len;
112  	return new_cache;
113  }
114  
do_cache_destroy(lkmem_cache_t * cache)115  _INLINE_ void do_cache_destroy(lkmem_cache_t *cache)
116  {
117  	free(cache);
118  }
119  
120  /*
121   * helper functions to deal with 32 or 64bit block numbers.
122   */
journal_tag_bytes(journal_t * journal)123  _INLINE_ size_t journal_tag_bytes(journal_t *journal)
124  {
125  	if (JFS_HAS_INCOMPAT_FEATURE(journal, JFS_FEATURE_INCOMPAT_64BIT))
126  		return JBD_TAG_SIZE64;
127  	else
128  		return JBD_TAG_SIZE32;
129  }
130  
131  #undef _INLINE_
132  #endif
133  
134  /*
135   * Kernel compatibility functions are defined in journal.c
136   */
137  int journal_bmap(journal_t *journal, blk64_t block, unsigned long long *phys);
138  struct buffer_head *getblk(kdev_t ctx, blk64_t blocknr, int blocksize);
139  void sync_blockdev(kdev_t kdev);
140  void ll_rw_block(int rw, int dummy, struct buffer_head *bh[]);
141  void mark_buffer_dirty(struct buffer_head *bh);
142  void mark_buffer_uptodate(struct buffer_head *bh, int val);
143  void brelse(struct buffer_head *bh);
144  int buffer_uptodate(struct buffer_head *bh);
145  void wait_on_buffer(struct buffer_head *bh);
146  
147  /*
148   * Define newer 2.5 interfaces
149   */
150  #define __getblk(dev, blocknr, blocksize) getblk(dev, blocknr, blocksize)
151  #define set_buffer_uptodate(bh) mark_buffer_uptodate(bh, 1)
152