2 * Compatibility header file for e2fsck which should be included
3 * instead of linux/jfs.h
5 * Copyright (C) 2000 Stephen C. Tweedie
7 * This file may be redistributed under the terms of the
8 * GNU General Public License version 2 or at your discretion
17 #if EXT2_FLAT_INCLUDES
22 #include "ext2fs/ext2_fs.h"
23 #include "ext2fs/ext2fs.h"
24 #include "blkid/blkid.h"
28 * Pull in the definition of the e2fsck context structure
42 unsigned int b_dirty:1;
43 unsigned int b_uptodate:1;
44 unsigned long long b_blocknr;
55 struct ext2_inode i_ext2;
68 #define K_DEV_JOURNAL 2
70 #define lock_buffer(bh) do {} while (0)
71 #define unlock_buffer(bh) do {} while (0)
72 #define buffer_req(bh) 1
73 #define do_readahead(journal, start) do {} while (0)
79 #define kmem_cache_alloc(cache, flags) malloc((cache)->object_length)
80 #define kmem_cache_free(cache, obj) free(obj)
81 #define kmem_cache_create(name, len, a, b, c) do_cache_create(len)
82 #define kmem_cache_destroy(cache) do_cache_destroy(cache)
83 #define kmalloc(len, flags) malloc(len)
84 #define kfree(p) free(p)
86 #define cond_resched() do { } while (0)
91 * Now pull in the real linux/jfs.h definitions.
93 #include <ext2fs/kernel-jbd.h>
96 * We use the standard libext2fs portability tricks for inline
99 #ifdef NO_INLINE_FUNCS
100 extern lkmem_cache_t *do_cache_create(int len);
101 extern void do_cache_destroy(lkmem_cache_t *cache);
102 extern size_t journal_tag_bytes(journal_t *journal);
105 #if (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
106 #ifdef E2FSCK_INCLUDE_INLINE_FUNCS
107 #if (__STDC_VERSION__ >= 199901L)
108 #define _INLINE_ extern inline
110 #define _INLINE_ inline
112 #else /* !E2FSCK_INCLUDE_INLINE FUNCS */
113 #if (__STDC_VERSION__ >= 199901L)
114 #define _INLINE_ inline
117 #define _INLINE_ extern __inline__
118 #else /* For Watcom C */
119 #define _INLINE_ extern inline
120 #endif /* __GNUC__ */
121 #endif /* __STDC_VERSION__ >= 199901L */
122 #endif /* E2FSCK_INCLUDE_INLINE_FUNCS */
125 _INLINE_ lkmem_cache_t *do_cache_create(int len)
127 lkmem_cache_t *new_cache;
129 new_cache = malloc(sizeof(*new_cache));
131 new_cache->object_length = len;
135 _INLINE_ void do_cache_destroy(lkmem_cache_t *cache)
140 /* generic hashing taken from the Linux kernel */
141 #define GOLDEN_RATIO_32 0x61C88647
142 #define GOLDEN_RATIO_64 0x61C8864680B583EBull
144 _INLINE_ __u32 __hash_32(__u32 val)
146 return val * GOLDEN_RATIO_32;
149 _INLINE_ __u32 hash_32(__u32 val, unsigned int bits)
151 /* High bits are more random, so use them. */
152 return __hash_32(val) >> (32 - bits);
155 _INLINE_ __u32 hash_64(__u64 val, unsigned int bits)
157 if (sizeof(long) >= 8) {
158 /* 64x64-bit multiply is efficient on all 64-bit processors */
159 return val * GOLDEN_RATIO_64 >> (64 - bits);
161 /* Hash 64 bits using only 32x32-bit multiply. */
162 return hash_32((__u32)val ^ __hash_32(val >> 32), bits);
170 * Kernel compatibility functions are defined in journal.c
172 int journal_bmap(journal_t *journal, blk64_t block, unsigned long long *phys);
173 struct buffer_head *getblk(kdev_t ctx, blk64_t blocknr, int blocksize);
174 int sync_blockdev(kdev_t kdev);
175 void ll_rw_block(int rw, int dummy, struct buffer_head *bh[]);
176 void mark_buffer_dirty(struct buffer_head *bh);
177 void mark_buffer_uptodate(struct buffer_head *bh, int val);
178 void brelse(struct buffer_head *bh);
179 int buffer_uptodate(struct buffer_head *bh);
180 void wait_on_buffer(struct buffer_head *bh);
183 * Define newer 2.5 interfaces
185 #define __getblk(dev, blocknr, blocksize) getblk(dev, blocknr, blocksize)
186 #define set_buffer_uptodate(bh) mark_buffer_uptodate(bh, 1)
191 #define J_ASSERT(x) assert(x)
193 #define JSB_HAS_INCOMPAT_FEATURE(jsb, mask) \
194 ((jsb)->s_header.h_blocktype == ext2fs_cpu_to_be32(JFS_SUPERBLOCK_V2) && \
195 ((jsb)->s_feature_incompat & ext2fs_cpu_to_be32((mask))))
198 extern e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */
200 #define J_ASSERT(assert) \
201 do { if (!(assert)) { \
202 printf ("Assertion failure in %s() at %s line %d: " \
204 __FUNCTION__, __FILE__, __LINE__, # assert); \
205 fatal_error(e2fsck_global_ctx, 0); \
211 #define EFSBADCRC EXT2_ET_BAD_CRC
214 #define EFSCORRUPTED EXT2_ET_FILESYSTEM_CORRUPTED
218 extern int journal_recover (journal_t *journal);
219 extern int journal_skip_recovery (journal_t *);
222 extern int journal_init_revoke(journal_t *, int);
223 extern void journal_destroy_revoke(journal_t *);
224 extern void journal_destroy_revoke_caches(void);
225 extern int journal_init_revoke_caches(void);
227 extern int journal_set_revoke(journal_t *, unsigned long long, tid_t);
228 extern int journal_test_revoke(journal_t *, unsigned long long, tid_t);
229 extern void journal_clear_revoke(journal_t *);
231 #endif /* _JFS_USER_H */