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 typedef struct kdev_s *kdev_t;
  71
  72 #define lock_buffer(bh) do {} while (0)
  73 #define unlock_buffer(bh) do {} while (0)
  74 #define buffer_req(bh) 1
  75 #define do_readahead(journal, start) do {} while (0)
  76
  77 typedef struct {
  78         int     object_length;
  79 } lkmem_cache_t;
  80
  81 #define kmem_cache_alloc(cache, flags) malloc((cache)->object_length)
  82 #define kmem_cache_free(cache, obj) free(obj)
  83 #define kmem_cache_create(name, len, a, b, c) do_cache_create(len)
  84 #define kmem_cache_destroy(cache) do_cache_destroy(cache)
  85 #define kmalloc(len, flags) malloc(len)
  86 #define kfree(p) free(p)
  87
  88 #define cond_resched()  do { } while (0)
  89
  90 #define __init
  91
  92 /*
  93  * Now pull in the real linux/jfs.h definitions.
  94  */
  95 #include <ext2fs/kernel-jbd.h>
  96
  97 /*
  98  * We use the standard libext2fs portability tricks for inline
  99  * functions.
 100  */
 101 #ifdef NO_INLINE_FUNCS
 102 extern lkmem_cache_t *do_cache_create(int len);
 103 extern void do_cache_destroy(lkmem_cache_t *cache);
 104 extern size_t journal_tag_bytes(journal_t *journal);
 105 #endif
 106
 107 #if (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
 108 #ifdef E2FSCK_INCLUDE_INLINE_FUNCS
 109 #if (__STDC_VERSION__ >= 199901L)
 110 #define _INLINE_ extern inline
 111 #else
 112 #define _INLINE_ inline
 113 #endif
 114 #else /* !E2FSCK_INCLUDE_INLINE FUNCS */
 115 #if (__STDC_VERSION__ >= 199901L)
 116 #define _INLINE_ inline
 117 #else /* not C99 */
 118 #ifdef __GNUC__
 119 #define _INLINE_ extern __inline__
 120 #else                           /* For Watcom C */
 121 #define _INLINE_ extern inline
 122 #endif /* __GNUC__ */
 123 #endif /* __STDC_VERSION__ >= 199901L */
 124 #endif /* E2FSCK_INCLUDE_INLINE_FUNCS */
 125
 126
 127 _INLINE_ lkmem_cache_t *do_cache_create(int len)
 128 {
 129         lkmem_cache_t *new_cache;
 130
 131         new_cache = malloc(sizeof(*new_cache));
 132         if (new_cache)
 133                 new_cache->object_length = len;
 134         return new_cache;
 135 }
 136
 137 _INLINE_ void do_cache_destroy(lkmem_cache_t *cache)
 138 {
 139         free(cache);
 140 }
 141
 142 #undef _INLINE_
 143 #endif
 144
 145 /*
 146  * Kernel compatibility functions are defined in journal.c
 147  */
 148 int journal_bmap(journal_t *journal, blk64_t block, unsigned long long *phys);
 149 struct buffer_head *getblk(kdev_t ctx, blk64_t blocknr, int blocksize);
 150 int sync_blockdev(kdev_t kdev);
 151 void ll_rw_block(int rw, int dummy, struct buffer_head *bh[]);
 152 void mark_buffer_dirty(struct buffer_head *bh);
 153 void mark_buffer_uptodate(struct buffer_head *bh, int val);
 154 void brelse(struct buffer_head *bh);
 155 int buffer_uptodate(struct buffer_head *bh);
 156 void wait_on_buffer(struct buffer_head *bh);
 157
 158 /*
 159  * Define newer 2.5 interfaces
 160  */
 161 #define __getblk(dev, blocknr, blocksize) getblk(dev, blocknr, blocksize)
 162 #define set_buffer_uptodate(bh) mark_buffer_uptodate(bh, 1)
 163
 164 #ifdef DEBUGFS
 165 #include <assert.h>
 166 #undef J_ASSERT
 167 #define J_ASSERT(x)     assert(x)
 168
 169 #define JSB_HAS_INCOMPAT_FEATURE(jsb, mask)                             \
 170         ((jsb)->s_header.h_blocktype == ext2fs_cpu_to_be32(JFS_SUPERBLOCK_V2) &&        \
 171          ((jsb)->s_feature_incompat & ext2fs_cpu_to_be32((mask))))
 172 static inline size_t journal_super_tag_bytes(journal_superblock_t *jsb)
 173 {
 174         size_t sz;
 175
 176         if (JSB_HAS_INCOMPAT_FEATURE(jsb, JFS_FEATURE_INCOMPAT_CSUM_V3))
 177                 return sizeof(journal_block_tag3_t);
 178
 179         sz = sizeof(journal_block_tag_t);
 180
 181         if (JSB_HAS_INCOMPAT_FEATURE(jsb, JFS_FEATURE_INCOMPAT_CSUM_V2))
 182                 sz += sizeof(__u16);
 183
 184         if (JSB_HAS_INCOMPAT_FEATURE(jsb, JFS_FEATURE_INCOMPAT_64BIT))
 185                 return sz;
 186
 187         return sz - sizeof(__u32);
 188 }
 189 #else  /* !DEBUGFS */
 190
 191 extern e2fsck_t e2fsck_global_ctx;  /* Try your very best not to use this! */
 192
 193 #define J_ASSERT(assert)                                                \
 194         do { if (!(assert)) {                                           \
 195                 printf ("Assertion failure in %s() at %s line %d: "     \
 196                         "\"%s\"\n",                                     \
 197                         __FUNCTION__, __FILE__, __LINE__, # assert);    \
 198                 fatal_error(e2fsck_global_ctx, 0);                      \
 199         } } while (0)
 200
 201 #endif /* DEBUGFS */
 202
 203 #endif /* _JFS_USER_H */