jfs_user.h revision 2acad6b4895a0e218f9d9eece1ade23c2cf4ffc7
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 17struct buffer_head { 18 char b_data[8192]; 19 e2fsck_t b_ctx; 20 io_channel b_io; 21 int b_size; 22 blk_t b_blocknr; 23 int b_dirty; 24 int b_uptodate; 25 int b_err; 26}; 27 28struct inode { 29 e2fsck_t i_ctx; 30 ext2_ino_t i_ino; 31 struct ext2_inode i_ext2; 32}; 33 34struct 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 42typedef 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 49extern e2fsck_t e2fsck_global_ctx; /* Try your very best not to use this! */ 50 51typedef struct { 52 int object_length; 53} kmem_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 64typedef 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 */ 77extern kmem_cache_t * do_cache_create(int len); 78extern void do_cache_destroy(kmem_cache_t *cache); 79extern 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_ kmem_cache_t * do_cache_create(int len) 93{ 94 kmem_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(kmem_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 */ 123int journal_bmap(journal_t *journal, blk_t block, unsigned long *phys); 124struct buffer_head *getblk(kdev_t ctx, blk_t blocknr, int blocksize); 125void sync_blockdev(kdev_t kdev); 126void ll_rw_block(int rw, int dummy, struct buffer_head *bh[]); 127void mark_buffer_dirty(struct buffer_head *bh); 128void mark_buffer_uptodate(struct buffer_head *bh, int val); 129void brelse(struct buffer_head *bh); 130int buffer_uptodate(struct buffer_head *bh); 131void 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) 138