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
19 #if EXT2_FLAT_INCLUDES
24 #include "ext2fs/ext2_fs.h"
25 #include "ext2fs/ext2fs.h"
26 #include "blkid/blkid.h"
30 * Pull in the definition of the e2fsck context structure
35 #if __STDC_VERSION__ < 199901L
36 # if __GNUC__ >= 2 || _MSC_VER >= 1300
37 # define __func__ __FUNCTION__
39 # define __func__ "<unknown>"
52 unsigned int b_dirty:1;
53 unsigned int b_uptodate:1;
54 unsigned long long b_blocknr;
65 struct ext2_inode i_ext2;
78 #define K_DEV_JOURNAL 2
80 #define lock_buffer(bh) do {} while (0)
81 #define unlock_buffer(bh) do {} while (0)
82 #define buffer_req(bh) 1
83 #define do_readahead(journal, start) do {} while (0)
85 typedef struct kmem_cache {
89 #define kmem_cache_alloc(cache, flags) malloc((cache)->object_length)
90 #define kmem_cache_free(cache, obj) free(obj)
91 #define kmem_cache_create(name, len, a, b, c) do_cache_create(len)
92 #define kmem_cache_destroy(cache) do_cache_destroy(cache)
93 #define kmalloc(len, flags) malloc(len)
94 #define kfree(p) free(p)
96 #define cond_resched() do { } while (0)
101 * Now pull in the real linux/jfs.h definitions.
103 #include <ext2fs/kernel-jbd.h>
106 * We use the standard libext2fs portability tricks for inline
109 #ifdef NO_INLINE_FUNCS
110 extern kmem_cache_t *do_cache_create(int len);
111 extern void do_cache_destroy(kmem_cache_t *cache);
112 extern size_t journal_tag_bytes(journal_t *journal);
113 extern __u32 __hash_32(__u32 val);
114 extern __u32 hash_32(__u32 val, unsigned int bits);
115 extern __u32 hash_64(__u64 val, unsigned int bits);
116 extern void *kmalloc_array(unsigned n, unsigned size, int flags);
117 extern __u32 jbd2_chksum(journal_t *j, __u32 crc, const void *address,
118 unsigned int length);
119 extern void jbd2_descriptor_block_csum_set(journal_t *j,
120 struct buffer_head *bh);
123 #if (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
124 #ifdef E2FSCK_INCLUDE_INLINE_FUNCS
125 #if (__STDC_VERSION__ >= 199901L)
126 #define _INLINE_ extern inline
128 #define _INLINE_ inline
130 #else /* !E2FSCK_INCLUDE_INLINE FUNCS */
131 #if (__STDC_VERSION__ >= 199901L)
132 #define _INLINE_ inline
135 #define _INLINE_ extern __inline__
136 #else /* For Watcom C */
137 #define _INLINE_ extern inline
138 #endif /* __GNUC__ */
139 #endif /* __STDC_VERSION__ >= 199901L */
140 #endif /* E2FSCK_INCLUDE_INLINE_FUNCS */
142 _INLINE_ kmem_cache_t *do_cache_create(int len)
144 kmem_cache_t *new_cache;
146 new_cache = malloc(sizeof(*new_cache));
148 new_cache->object_length = len;
152 _INLINE_ void do_cache_destroy(kmem_cache_t *cache)
157 /* generic hashing taken from the Linux kernel */
158 #define GOLDEN_RATIO_32 0x61C88647
159 #define GOLDEN_RATIO_64 0x61C8864680B583EBull
161 _INLINE_ __u32 __hash_32(__u32 val)
163 return val * GOLDEN_RATIO_32;
166 _INLINE_ __u32 hash_32(__u32 val, unsigned int bits)
168 /* High bits are more random, so use them. */
169 return __hash_32(val) >> (32 - bits);
172 _INLINE_ __u32 hash_64(__u64 val, unsigned int bits)
174 if (sizeof(long) >= 8) {
175 /* 64x64-bit multiply is efficient on all 64-bit processors */
176 return val * GOLDEN_RATIO_64 >> (64 - bits);
178 /* Hash 64 bits using only 32x32-bit multiply. */
179 return hash_32((__u32)val ^ __hash_32(val >> 32), bits);
183 _INLINE_ void *kmalloc_array(unsigned n, unsigned size,
184 int flags EXT2FS_ATTR((unused)))
186 if (n && (~0U)/n < size)
188 return malloc(n * size);
191 _INLINE_ __u32 jbd2_chksum(journal_t *j EXT2FS_ATTR((unused)),
192 __u32 crc, const void *address,
195 return ext2fs_crc32c_le(crc, address, length);
198 _INLINE_ void jbd2_descriptor_block_csum_set(journal_t *j,
199 struct buffer_head *bh)
201 struct jbd2_journal_block_tail *tail;
204 if (!jbd2_journal_has_csum_v2or3(j))
207 tail = (struct jbd2_journal_block_tail *)(bh->b_data + j->j_blocksize -
208 sizeof(struct jbd2_journal_block_tail));
209 tail->t_checksum = 0;
210 csum = jbd2_chksum(j, j->j_csum_seed, bh->b_data, j->j_blocksize);
211 tail->t_checksum = cpu_to_be32(csum);
217 * Kernel compatibility functions are defined in journal.c
219 int jbd2_journal_bmap(journal_t *journal, unsigned long block,
220 unsigned long long *phys);
221 struct buffer_head *getblk(kdev_t ctx, unsigned long long blocknr,
223 int sync_blockdev(kdev_t kdev);
224 void ll_rw_block(int rw, int op_flags, int nr, struct buffer_head *bh[]);
225 void mark_buffer_dirty(struct buffer_head *bh);
226 void mark_buffer_uptodate(struct buffer_head *bh, int val);
227 void brelse(struct buffer_head *bh);
228 int buffer_uptodate(struct buffer_head *bh);
229 void wait_on_buffer(struct buffer_head *bh);
232 * Define newer 2.5 interfaces
234 #define __getblk(dev, blocknr, blocksize) getblk(dev, blocknr, blocksize)
235 #define set_buffer_uptodate(bh) mark_buffer_uptodate(bh, 1)
240 #define J_ASSERT(x) assert(x)
242 #define JSB_HAS_INCOMPAT_FEATURE(jsb, mask) \
243 ((jsb)->s_header.h_blocktype == ext2fs_cpu_to_be32(JBD2_SUPERBLOCK_V2) && \
244 ((jsb)->s_feature_incompat & ext2fs_cpu_to_be32((mask))))
247 extern e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */
249 #define J_ASSERT(assert) \
250 do { if (!(assert)) { \
251 printf ("Assertion failure in %s() at %s line %d: " \
253 __func__, __FILE__, __LINE__, # assert); \
254 fatal_error(e2fsck_global_ctx, 0); \
260 #define EFSBADCRC EXT2_ET_BAD_CRC
263 #define EFSCORRUPTED EXT2_ET_FILESYSTEM_CORRUPTED
267 extern int jbd2_journal_recover (journal_t *journal);
268 extern int jbd2_journal_skip_recovery (journal_t *);
271 extern int jbd2_journal_init_revoke(journal_t *, int);
272 extern void jbd2_journal_destroy_revoke(journal_t *);
273 extern void jbd2_journal_destroy_revoke_record_cache(void);
274 extern void jbd2_journal_destroy_revoke_table_cache(void);
275 extern int jbd2_journal_init_revoke_record_cache(void);
276 extern int jbd2_journal_init_revoke_table_cache(void);
279 extern int jbd2_journal_set_revoke(journal_t *, unsigned long long, tid_t);
280 extern int jbd2_journal_test_revoke(journal_t *, unsigned long long, tid_t);
281 extern void jbd2_journal_clear_revoke(journal_t *);
283 #endif /* _JFS_USER_H */