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 #if EXT2_FLAT_INCLUDES
  16 #include "ext2_fs.h"
  17 #include "ext2fs.h"
  18 #include "blkid.h"
  19 #else
  20 #include "ext2fs/ext2_fs.h"
  21 #include "ext2fs/ext2fs.h"
  22 #include "blkid/blkid.h"
  23 #endif
  24 #else
  25 /*
  26  * Pull in the definition of the e2fsck context structure
  27  */
  28 #include "e2fsck.h"
  29 #endif
  30
  31 struct buffer_head {
  32 #ifdef DEBUGFS
  33         ext2_filsys     b_fs;
  34 #else
  35         e2fsck_t        b_ctx;
  36 #endif
  37         io_channel      b_io;
  38         int             b_size;
  39         unsigned long long b_blocknr;
  40         int             b_dirty;
  41         int             b_uptodate;
  42         int             b_err;
  43         char            b_data[1024];
  44 };
  45
  46 struct inode {
  47 #ifdef DEBUGFS
  48         ext2_filsys     i_fs;
  49 #else
  50         e2fsck_t        i_ctx;
  51 #endif
  52         ext2_ino_t      i_ino;
  53         struct ext2_inode i_ext2;
  54 };
  55
  56 struct kdev_s {
  57 #ifdef DEBUGFS
  58         ext2_filsys     k_fs;
  59 #else
  60         e2fsck_t        k_ctx;
  61 #endif
  62         int             k_dev;
  63 };
  64
  65 #define K_DEV_FS        1
  66 #define K_DEV_JOURNAL   2
  67
  68 typedef struct kdev_s *kdev_t;
  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 typedef unsigned int __be32;
  89 typedef __u64 __be64;
  90
  91 #define __init
  92
  93 /*
  94  * Now pull in the real linux/jfs.h definitions.
  95  */
  96 #include <ext2fs/kernel-jbd.h>
  97
  98 /*
  99  * We use the standard libext2fs portability tricks for inline
 100  * functions.
 101  */
 102 #ifdef NO_INLINE_FUNCS
 103 extern lkmem_cache_t *do_cache_create(int len);
 104 extern void do_cache_destroy(lkmem_cache_t *cache);
 105 extern size_t journal_tag_bytes(journal_t *journal);
 106 #endif
 107
 108 #if (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
 109 #ifdef E2FSCK_INCLUDE_INLINE_FUNCS
 110 #if (__STDC_VERSION__ >= 199901L)
 111 #define _INLINE_ extern inline
 112 #else
 113 #define _INLINE_ inline
 114 #endif
 115 #else /* !E2FSCK_INCLUDE_INLINE FUNCS */
 116 #if (__STDC_VERSION__ >= 199901L)
 117 #define _INLINE_ inline
 118 #else /* not C99 */
 119 #ifdef __GNUC__
 120 #define _INLINE_ extern __inline__
 121 #else                           /* For Watcom C */
 122 #define _INLINE_ extern inline
 123 #endif /* __GNUC__ */
 124 #endif /* __STDC_VERSION__ >= 199901L */
 125 #endif /* E2FSCK_INCLUDE_INLINE_FUNCS */
 126
 127
 128 _INLINE_ lkmem_cache_t *do_cache_create(int len)
 129 {
 130         lkmem_cache_t *new_cache;
 131
 132         new_cache = malloc(sizeof(*new_cache));
 133         if (new_cache)
 134                 new_cache->object_length = len;
 135         return new_cache;
 136 }
 137
 138 _INLINE_ void do_cache_destroy(lkmem_cache_t *cache)
 139 {
 140         free(cache);
 141 }
 142
 143 #undef _INLINE_
 144 #endif
 145
 146 /*
 147  * Kernel compatibility functions are defined in journal.c
 148  */
 149 int journal_bmap(journal_t *journal, blk64_t block, unsigned long long *phys);
 150 struct buffer_head *getblk(kdev_t ctx, blk64_t blocknr, int blocksize);
 151 int sync_blockdev(kdev_t kdev);
 152 void ll_rw_block(int rw, int dummy, struct buffer_head *bh[]);
 153 void mark_buffer_dirty(struct buffer_head *bh);
 154 void mark_buffer_uptodate(struct buffer_head *bh, int val);
 155 void brelse(struct buffer_head *bh);
 156 int buffer_uptodate(struct buffer_head *bh);
 157 void wait_on_buffer(struct buffer_head *bh);
 158
 159 /*
 160  * Define newer 2.5 interfaces
 161  */
 162 #define __getblk(dev, blocknr, blocksize) getblk(dev, blocknr, blocksize)
 163 #define set_buffer_uptodate(bh) mark_buffer_uptodate(bh, 1)
 164
 165 #ifdef DEBUGFS
 166 #include <assert.h>
 167 #undef J_ASSERT
 168 #define J_ASSERT(x)     assert(x)
 169
 170 #define JSB_HAS_INCOMPAT_FEATURE(jsb, mask)                             \
 171         ((jsb)->s_header.h_blocktype == ext2fs_cpu_to_be32(JFS_SUPERBLOCK_V2) &&        \
 172          ((jsb)->s_feature_incompat & ext2fs_cpu_to_be32((mask))))
 173 static inline size_t journal_super_tag_bytes(journal_superblock_t *jsb)
 174 {
 175         size_t sz;
 176
 177         if (JSB_HAS_INCOMPAT_FEATURE(jsb, JFS_FEATURE_INCOMPAT_CSUM_V3))
 178                 return sizeof(journal_block_tag3_t);
 179
 180         sz = sizeof(journal_block_tag_t);
 181
 182         if (JSB_HAS_INCOMPAT_FEATURE(jsb, JFS_FEATURE_INCOMPAT_CSUM_V2))
 183                 sz += sizeof(__u16);
 184
 185         if (JSB_HAS_INCOMPAT_FEATURE(jsb, JFS_FEATURE_INCOMPAT_64BIT))
 186                 return sz;
 187
 188         return sz - sizeof(__u32);
 189 }
 190 #else  /* !DEBUGFS */
 191
 192 extern e2fsck_t e2fsck_global_ctx;  /* Try your very best not to use this! */
 193
 194 #define J_ASSERT(assert)                                                \
 195         do { if (!(assert)) {                                           \
 196                 printf ("Assertion failure in %s() at %s line %d: "     \
 197                         "\"%s\"\n",                                     \
 198                         __FUNCTION__, __FILE__, __LINE__, # assert);    \
 199                 fatal_error(e2fsck_global_ctx, 0);                      \
 200         } } while (0)
 201
 202 #endif /* DEBUGFS */
 203
 204 #endif /* _JFS_USER_H */