release/src/router/e2fsprogs/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
  12 /*
  13  * Pull in the definition of the e2fsck context structure
  14  */
  15 #include "e2fsck.h"
  16
  17 struct buffer_head {
  18         e2fsck_t        b_ctx;
  19         io_channel      b_io;
  20         int             b_size;
  21         blk_t           b_blocknr;
  22         int             b_dirty;
  23         int             b_uptodate;
  24         int             b_err;
  25         char            b_data[1024];
  26 };
  27
  28 struct inode {
  29         e2fsck_t        i_ctx;
  30         ext2_ino_t      i_ino;
  31         struct ext2_inode i_ext2;
  32 };
  33
  34 struct kdev_s {
  35         e2fsck_t        k_ctx;
  36         int             k_dev;
  37 };
  38
  39 #define K_DEV_FS        1
  40 #define K_DEV_JOURNAL   2
  41
  42 typedef struct kdev_s *kdev_t;
  43
  44 #define lock_buffer(bh) do {} while(0)
  45 #define unlock_buffer(bh) do {} while(0)
  46 #define buffer_req(bh) 1
  47 #define do_readahead(journal, start) do {} while(0)
  48
  49 extern e2fsck_t e2fsck_global_ctx;  /* Try your very best not to use this! */
  50
  51 typedef struct {
  52         int     object_length;
  53 } lkmem_cache_t;
  54
  55 #define kmem_cache_alloc(cache,flags) malloc((cache)->object_length)
  56 #define kmem_cache_free(cache,obj) free(obj)
  57 #define kmem_cache_create(name,len,a,b,c,d) do_cache_create(len)
  58 #define kmem_cache_destroy(cache) do_cache_destroy(cache)
  59 #define kmalloc(len,flags) malloc(len)
  60 #define kfree(p) free(p)
  61
  62 #define cond_resched()  do { } while (0)
  63
  64 typedef unsigned int __be32;
  65
  66 #define __init
  67
  68 /*
  69  * Now pull in the real linux/jfs.h definitions.
  70  */
  71 #include <ext2fs/kernel-jbd.h>
  72
  73 /*
  74  * We use the standard libext2fs portability tricks for inline
  75  * functions.
  76  */
  77 extern lkmem_cache_t * do_cache_create(int len);
  78 extern void do_cache_destroy(lkmem_cache_t *cache);
  79 extern size_t journal_tag_bytes(journal_t *journal);
  80
  81 #if (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
  82 #ifdef E2FSCK_INCLUDE_INLINE_FUNCS
  83 #define _INLINE_ extern
  84 #else
  85 #ifdef __GNUC__
  86 #define _INLINE_ extern __inline__
  87 #else                           /* For Watcom C */
  88 #define _INLINE_ extern inline
  89 #endif
  90 #endif
  91
  92 _INLINE_ lkmem_cache_t * do_cache_create(int len)
  93 {
  94         lkmem_cache_t *new_cache;
  95         new_cache = malloc(sizeof(*new_cache));
  96         if (new_cache)
  97                 new_cache->object_length = len;
  98         return new_cache;
  99 }
 100
 101 _INLINE_ void do_cache_destroy(lkmem_cache_t *cache)
 102 {
 103         free(cache);
 104 }
 105
 106 /*
 107  * helper functions to deal with 32 or 64bit block numbers.
 108  */
 109 _INLINE_ size_t journal_tag_bytes(journal_t *journal)
 110 {
 111         if (JFS_HAS_INCOMPAT_FEATURE(journal, JFS_FEATURE_INCOMPAT_64BIT))
 112                 return JBD_TAG_SIZE64;
 113         else
 114                 return JBD_TAG_SIZE32;
 115 }
 116
 117 #undef _INLINE_
 118 #endif
 119
 120 /*
 121  * Kernel compatibility functions are defined in journal.c
 122  */
 123 int journal_bmap(journal_t *journal, blk_t block, unsigned long *phys);
 124 struct buffer_head *getblk(kdev_t ctx, blk_t blocknr, int blocksize);
 125 void sync_blockdev(kdev_t kdev);
 126 void ll_rw_block(int rw, int dummy, struct buffer_head *bh[]);
 127 void mark_buffer_dirty(struct buffer_head *bh);
 128 void mark_buffer_uptodate(struct buffer_head *bh, int val);
 129 void brelse(struct buffer_head *bh);
 130 int buffer_uptodate(struct buffer_head *bh);
 131 void wait_on_buffer(struct buffer_head *bh);
 132
 133 /*
 134  * Define newer 2.5 interfaces
 135  */
 136 #define __getblk(dev, blocknr, blocksize) getblk(dev, blocknr, blocksize)
 137 #define set_buffer_uptodate(bh) mark_buffer_uptodate(bh, 1)