e2fsck/jfs_user.h

   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 "e2fsck.h"
  31 #endif
  32
  33 struct buffer_head {
  34 #ifdef DEBUGFS
  35         ext2_filsys     b_fs;
  36 #else
  37         e2fsck_t        b_ctx;
  38 #endif
  39         io_channel      b_io;
  40         int             b_size;
  41         unsigned long long b_blocknr;
  42         int             b_dirty;
  43         int             b_uptodate;
  44         int             b_err;
  45         char            b_data[1024];
  46 };
  47
  48 struct inode {
  49 #ifdef DEBUGFS
  50         ext2_filsys     i_fs;
  51 #else
  52         e2fsck_t        i_ctx;
  53 #endif
  54         ext2_ino_t      i_ino;
  55         struct ext2_inode i_ext2;
  56 };
  57
  58 struct kdev_s {
  59 #ifdef DEBUGFS
  60         ext2_filsys     k_fs;
  61 #else
  62         e2fsck_t        k_ctx;
  63 #endif
  64         int             k_dev;
  65 };
  66
  67 #define K_DEV_FS        1
  68 #define K_DEV_JOURNAL   2
  69
  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)
  74
  75 typedef struct {
  76         int     object_length;
  77 } lkmem_cache_t;
  78
  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)
  85
  86 #define cond_resched()  do { } while (0)
  87
  88 #define __init
  89
  90 /*
  91  * Now pull in the real linux/jfs.h definitions.
  92  */
  93 #include <ext2fs/kernel-jbd.h>
  94
  95 /*
  96  * We use the standard libext2fs portability tricks for inline
  97  * functions.
  98  */
  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);
 103 #endif
 104
 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
 109 #else
 110 #define _INLINE_ inline
 111 #endif
 112 #else /* !E2FSCK_INCLUDE_INLINE FUNCS */
 113 #if (__STDC_VERSION__ >= 199901L)
 114 #define _INLINE_ inline
 115 #else /* not C99 */
 116 #ifdef __GNUC__
 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 */
 123
 124
 125 _INLINE_ lkmem_cache_t *do_cache_create(int len)
 126 {
 127         lkmem_cache_t *new_cache;
 128
 129         new_cache = malloc(sizeof(*new_cache));
 130         if (new_cache)
 131                 new_cache->object_length = len;
 132         return new_cache;
 133 }
 134
 135 _INLINE_ void do_cache_destroy(lkmem_cache_t *cache)
 136 {
 137         free(cache);
 138 }
 139
 140 #undef _INLINE_
 141 #endif
 142
 143 /*
 144  * Kernel compatibility functions are defined in journal.c
 145  */
 146 int journal_bmap(journal_t *journal, blk64_t block, unsigned long long *phys);
 147 struct buffer_head *getblk(kdev_t ctx, blk64_t blocknr, int blocksize);
 148 int sync_blockdev(kdev_t kdev);
 149 void ll_rw_block(int rw, int dummy, struct buffer_head *bh[]);
 150 void mark_buffer_dirty(struct buffer_head *bh);
 151 void mark_buffer_uptodate(struct buffer_head *bh, int val);
 152 void brelse(struct buffer_head *bh);
 153 int buffer_uptodate(struct buffer_head *bh);
 154 void wait_on_buffer(struct buffer_head *bh);
 155
 156 /*
 157  * Define newer 2.5 interfaces
 158  */
 159 #define __getblk(dev, blocknr, blocksize) getblk(dev, blocknr, blocksize)
 160 #define set_buffer_uptodate(bh) mark_buffer_uptodate(bh, 1)
 161
 162 #ifdef DEBUGFS
 163 #include <assert.h>
 164 #undef J_ASSERT
 165 #define J_ASSERT(x)     assert(x)
 166
 167 #define JSB_HAS_INCOMPAT_FEATURE(jsb, mask)                             \
 168         ((jsb)->s_header.h_blocktype == ext2fs_cpu_to_be32(JFS_SUPERBLOCK_V2) &&        \
 169          ((jsb)->s_feature_incompat & ext2fs_cpu_to_be32((mask))))
 170 #else  /* !DEBUGFS */
 171
 172 extern e2fsck_t e2fsck_global_ctx;  /* Try your very best not to use this! */
 173
 174 #define J_ASSERT(assert)                                                \
 175         do { if (!(assert)) {                                           \
 176                 printf ("Assertion failure in %s() at %s line %d: "     \
 177                         "\"%s\"\n",                                     \
 178                         __FUNCTION__, __FILE__, __LINE__, # assert);    \
 179                 fatal_error(e2fsck_global_ctx, 0);                      \
 180         } } while (0)
 181
 182 #endif /* DEBUGFS */
 183
 184 /* recovery.c */
 185 extern int      journal_recover    (journal_t *journal);
 186 extern int      journal_skip_recovery (journal_t *);
 187
 188 /* revoke.c */
 189 extern int      journal_init_revoke(journal_t *, int);
 190 extern void     journal_destroy_revoke(journal_t *);
 191 extern void     journal_destroy_revoke_caches(void);
 192 extern int      journal_init_revoke_caches(void);
 193
 194 extern int      journal_set_revoke(journal_t *, unsigned long long, tid_t);
 195 extern int      journal_test_revoke(journal_t *, unsigned long long, tid_t);
 196 extern void     journal_clear_revoke(journal_t *);
 197
 198 #endif /* _JFS_USER_H */