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 #ifndef _JFS_USER_H
12 #define _JFS_USER_H
13
14 #ifdef DEBUGFS
15 #include <stdio.h>
16 #include <stdlib.h>
17 #if EXT2_FLAT_INCLUDES
18 #include "ext2_fs.h"
19 #include "ext2fs.h"
20 #include "blkid.h"
21 #else
22 #include "ext2fs/ext2_fs.h"
23 #include "ext2fs/ext2fs.h"
24 #include "blkid/blkid.h"
25 #endif
26 #else
27 /*
28 * Pull in the definition of the e2fsck context structure
29 */
30 #include "config.h"
31 #include "e2fsck.h"
32 #endif
33
34 #if __STDC_VERSION__ < 199901L
35 # if __GNUC__ >= 2 || _MSC_VER >= 1300
36 # define __func__ __FUNCTION__
37 # else
38 # define __func__ "<unknown>"
39 # endif
40 #endif
41
42 struct buffer_head {
43 #ifdef DEBUGFS
44 ext2_filsys b_fs;
45 #else
46 e2fsck_t b_ctx;
47 #endif
48 io_channel b_io;
49 int b_size;
50 int b_err;
51 unsigned int b_dirty:1;
52 unsigned int b_uptodate:1;
53 unsigned long long b_blocknr;
54 char b_data[1024];
55 };
56
57 struct inode {
58 #ifdef DEBUGFS
59 ext2_filsys i_fs;
60 #else
61 e2fsck_t i_ctx;
62 #endif
63 ext2_ino_t i_ino;
64 struct ext2_inode i_ext2;
65 };
66
67 struct kdev_s {
68 #ifdef DEBUGFS
69 ext2_filsys k_fs;
70 #else
71 e2fsck_t k_ctx;
72 #endif
73 int k_dev;
74 };
75
76 #define K_DEV_FS 1
77 #define K_DEV_JOURNAL 2
78
79 #define lock_buffer(bh) do {} while (0)
80 #define unlock_buffer(bh) do {} while (0)
81 #define buffer_req(bh) 1
82 #define do_readahead(journal, start) do {} while (0)
83
84 typedef struct {
85 int object_length;
86 } lkmem_cache_t;
87
88 #define kmem_cache_alloc(cache, flags) malloc((cache)->object_length)
89 #define kmem_cache_free(cache, obj) free(obj)
90 #define kmem_cache_create(name, len, a, b, c) do_cache_create(len)
91 #define kmem_cache_destroy(cache) do_cache_destroy(cache)
92 #define kmalloc(len, flags) malloc(len)
93 #define kfree(p) free(p)
94
95 #define cond_resched() do { } while (0)
96
97 #define __init
98
99 /*
100 * Now pull in the real linux/jfs.h definitions.
101 */
102 #include <ext2fs/kernel-jbd.h>
103
104 /*
105 * We use the standard libext2fs portability tricks for inline
106 * functions.
107 */
108 #ifdef NO_INLINE_FUNCS
109 extern lkmem_cache_t *do_cache_create(int len);
110 extern void do_cache_destroy(lkmem_cache_t *cache);
111 extern size_t journal_tag_bytes(journal_t *journal);
112 extern __u32 __hash_32(__u32 val);
113 extern __u32 hash_32(__u32 val, unsigned int bits);
114 extern __u32 hash_64(__u64 val, unsigned int bits);
115 #endif
116
117 #if (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
118 #ifdef E2FSCK_INCLUDE_INLINE_FUNCS
119 #if (__STDC_VERSION__ >= 199901L)
120 #define _INLINE_ extern inline
121 #else
122 #define _INLINE_ inline
123 #endif
124 #else /* !E2FSCK_INCLUDE_INLINE FUNCS */
125 #if (__STDC_VERSION__ >= 199901L)
126 #define _INLINE_ inline
127 #else /* not C99 */
128 #ifdef __GNUC__
129 #define _INLINE_ extern __inline__
130 #else /* For Watcom C */
131 #define _INLINE_ extern inline
132 #endif /* __GNUC__ */
133 #endif /* __STDC_VERSION__ >= 199901L */
134 #endif /* E2FSCK_INCLUDE_INLINE_FUNCS */
135
do_cache_create(int len)136 _INLINE_ lkmem_cache_t *do_cache_create(int len)
137 {
138 lkmem_cache_t *new_cache;
139
140 new_cache = malloc(sizeof(*new_cache));
141 if (new_cache)
142 new_cache->object_length = len;
143 return new_cache;
144 }
145
do_cache_destroy(lkmem_cache_t * cache)146 _INLINE_ void do_cache_destroy(lkmem_cache_t *cache)
147 {
148 free(cache);
149 }
150
151 /* generic hashing taken from the Linux kernel */
152 #define GOLDEN_RATIO_32 0x61C88647
153 #define GOLDEN_RATIO_64 0x61C8864680B583EBull
154
__hash_32(__u32 val)155 _INLINE_ __u32 __hash_32(__u32 val)
156 {
157 return val * GOLDEN_RATIO_32;
158 }
159
hash_32(__u32 val,unsigned int bits)160 _INLINE_ __u32 hash_32(__u32 val, unsigned int bits)
161 {
162 /* High bits are more random, so use them. */
163 return __hash_32(val) >> (32 - bits);
164 }
165
hash_64(__u64 val,unsigned int bits)166 _INLINE_ __u32 hash_64(__u64 val, unsigned int bits)
167 {
168 if (sizeof(long) >= 8) {
169 /* 64x64-bit multiply is efficient on all 64-bit processors */
170 return val * GOLDEN_RATIO_64 >> (64 - bits);
171 } else {
172 /* Hash 64 bits using only 32x32-bit multiply. */
173 return hash_32((__u32)val ^ __hash_32(val >> 32), bits);
174 }
175 }
176
177 #undef _INLINE_
178 #endif
179
180 /*
181 * Kernel compatibility functions are defined in journal.c
182 */
183 int journal_bmap(journal_t *journal, blk64_t block, unsigned long long *phys);
184 struct buffer_head *getblk(kdev_t ctx, blk64_t blocknr, int blocksize);
185 int sync_blockdev(kdev_t kdev);
186 void ll_rw_block(int rw, int dummy, struct buffer_head *bh[]);
187 void mark_buffer_dirty(struct buffer_head *bh);
188 void mark_buffer_uptodate(struct buffer_head *bh, int val);
189 void brelse(struct buffer_head *bh);
190 int buffer_uptodate(struct buffer_head *bh);
191 void wait_on_buffer(struct buffer_head *bh);
192
193 /*
194 * Define newer 2.5 interfaces
195 */
196 #define __getblk(dev, blocknr, blocksize) getblk(dev, blocknr, blocksize)
197 #define set_buffer_uptodate(bh) mark_buffer_uptodate(bh, 1)
198
199 #ifdef DEBUGFS
200 #include <assert.h>
201 #undef J_ASSERT
202 #define J_ASSERT(x) assert(x)
203
204 #define JSB_HAS_INCOMPAT_FEATURE(jsb, mask) \
205 ((jsb)->s_header.h_blocktype == ext2fs_cpu_to_be32(JFS_SUPERBLOCK_V2) && \
206 ((jsb)->s_feature_incompat & ext2fs_cpu_to_be32((mask))))
207 #else /* !DEBUGFS */
208
209 extern e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */
210
211 #define J_ASSERT(assert) \
212 do { if (!(assert)) { \
213 printf ("Assertion failure in %s() at %s line %d: " \
214 "\"%s\"\n", \
215 __func__, __FILE__, __LINE__, # assert); \
216 fatal_error(e2fsck_global_ctx, 0); \
217 } } while (0)
218
219 #endif /* DEBUGFS */
220
221 #ifndef EFSBADCRC
222 #define EFSBADCRC EXT2_ET_BAD_CRC
223 #endif
224 #ifndef EFSCORRUPTED
225 #define EFSCORRUPTED EXT2_ET_FILESYSTEM_CORRUPTED
226 #endif
227
228 /* recovery.c */
229 extern int journal_recover (journal_t *journal);
230 extern int journal_skip_recovery (journal_t *);
231
232 /* revoke.c */
233 extern int journal_init_revoke(journal_t *, int);
234 extern void journal_destroy_revoke(journal_t *);
235 extern void journal_destroy_revoke_caches(void);
236 extern int journal_init_revoke_caches(void);
237
238 extern int journal_set_revoke(journal_t *, unsigned long long, tid_t);
239 extern int journal_test_revoke(journal_t *, unsigned long long, tid_t);
240 extern void journal_clear_revoke(journal_t *);
241
242 #endif /* _JFS_USER_H */
243