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      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 #ifndef __BIONIC__
     65 typedef unsigned int __be32;
     66 #endif
     67 
     68 #define __init
     69 
     70 /*
     71  * Now pull in the real linux/jfs.h definitions.
     72  */
     73 #include <ext2fs/kernel-jbd.h>
     74 
     75 /*
     76  * We use the standard libext2fs portability tricks for inline
     77  * functions.
     78  */
     79 extern lkmem_cache_t * do_cache_create(int len);
     80 extern void do_cache_destroy(lkmem_cache_t *cache);
     81 extern size_t journal_tag_bytes(journal_t *journal);
     82 
     83 #if (defined(E2FSCK_INCLUDE_INLINE_FUNCS) || !defined(NO_INLINE_FUNCS))
     84 #ifdef E2FSCK_INCLUDE_INLINE_FUNCS
     85 #define _INLINE_ extern
     86 #else
     87 #ifdef __GNUC__
     88 #define _INLINE_ extern __inline__
     89 #else				/* For Watcom C */
     90 #define _INLINE_ extern inline
     91 #endif
     92 #endif
     93 
     94 _INLINE_ lkmem_cache_t * do_cache_create(int len)
     95 {
     96 	lkmem_cache_t *new_cache;
     97 	new_cache = malloc(sizeof(*new_cache));
     98 	if (new_cache)
     99 		new_cache->object_length = len;
    100 	return new_cache;
    101 }
    102 
    103 _INLINE_ void do_cache_destroy(lkmem_cache_t *cache)
    104 {
    105 	free(cache);
    106 }
    107 
    108 /*
    109  * helper functions to deal with 32 or 64bit block numbers.
    110  */
    111 _INLINE_ size_t journal_tag_bytes(journal_t *journal)
    112 {
    113 	if (JFS_HAS_INCOMPAT_FEATURE(journal, JFS_FEATURE_INCOMPAT_64BIT))
    114 		return JBD_TAG_SIZE64;
    115 	else
    116 		return JBD_TAG_SIZE32;
    117 }
    118 
    119 #undef _INLINE_
    120 #endif
    121 
    122 /*
    123  * Kernel compatibility functions are defined in journal.c
    124  */
    125 int journal_bmap(journal_t *journal, blk_t block, unsigned long *phys);
    126 struct buffer_head *getblk(kdev_t ctx, blk_t blocknr, int blocksize);
    127 void sync_blockdev(kdev_t kdev);
    128 void ll_rw_block(int rw, int dummy, struct buffer_head *bh[]);
    129 void mark_buffer_dirty(struct buffer_head *bh);
    130 void mark_buffer_uptodate(struct buffer_head *bh, int val);
    131 void brelse(struct buffer_head *bh);
    132 int buffer_uptodate(struct buffer_head *bh);
    133 void wait_on_buffer(struct buffer_head *bh);
    134 
    135 /*
    136  * Define newer 2.5 interfaces
    137  */
    138 #define __getblk(dev, blocknr, blocksize) getblk(dev, blocknr, blocksize)
    139 #define set_buffer_uptodate(bh) mark_buffer_uptodate(bh, 1)
    140