Jeff Mahoney
47cff72748
Over the years, the reiserfs kernel code has been gradually cleaned up to be more readable. This patch does the same to the progs code. Signed-off-by: Jeff Mahoney <jeffm@suse.com>
86 lines
2.6 KiB
C
86 lines
2.6 KiB
C
/*
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* Copyright 1996-2004 by Hans Reiser, licensing governed by
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* reiserfsprogs/README
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*/
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#ifndef REISERFSPROGS_IO_H
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#define REISERFSPROGS_IO_H
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include <stdio.h>
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#include <unistd.h>
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#include <sys/stat.h>
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#include <sys/types.h>
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#include "misc.h"
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struct buffer_head {
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unsigned long b_blocknr;
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int b_dev;
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unsigned long b_size;
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char *b_data;
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unsigned long b_state;
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unsigned int b_count;
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unsigned int b_list;
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void (*b_start_io) (unsigned long);
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void (*b_end_io) (struct buffer_head * bh, int uptodate);
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struct buffer_head *b_next;
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struct buffer_head *b_prev;
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struct buffer_head *b_hash_next;
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struct buffer_head *b_hash_prev;
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};
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#define BH_Uptodate 0
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#define BH_Dirty 1
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#define BH_Lock 2
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#define BH_Do_not_flush 3
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#define buffer_uptodate(bh) misc_test_bit(BH_Uptodate, &(bh)->b_state)
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#define buffer_dirty(bh) misc_test_bit(BH_Dirty, &(bh)->b_state)
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#define buffer_locked(bh) misc_test_bit(BH_Lock, &(bh)->b_state)
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#define buffer_clean(bh) !misc_test_bit(BH_Dirty, &(bh)->b_state)
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#define buffer_do_not_flush(bh) misc_test_bit(BH_Do_not_flush, &(bh)->b_state)
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#define mark_buffer_dirty(bh) misc_set_bit(BH_Dirty, &(bh)->b_state)
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#define mark_buffer_uptodate(bh,i) misc_set_bit(BH_Uptodate, &(bh)->b_state)
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#define mark_buffer_clean(bh) misc_clear_bit(BH_Dirty, &(bh)->b_state)
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#define mark_buffer_do_not_flush(bh) misc_set_bit(BH_Do_not_flush, &(bh)->b_state)
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#define clear_buffer_do_not_flush(bh) misc_clear_bit(BH_Do_not_flush, &(bh)->b_state)
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/*
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printf ("%s:%s:%u %p %p %p\n",
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__FILE__, __FUNCTION__, __LINE__,
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__builtin_return_address (0),
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__builtin_return_address (1),
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__builtin_return_address (2));
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*/
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void __wait_on_buffer(struct buffer_head *bh);
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struct buffer_head *getblk(int dev, unsigned long block, int size);
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struct buffer_head *reiserfs_getblk(int dev, unsigned long block, int size,
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int *repeat);
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struct buffer_head *find_buffer(int dev, unsigned long block,
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unsigned long size);
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struct buffer_head *get_hash_table(dev_t dev, unsigned long block, int size);
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struct buffer_head *bread(int dev, unsigned long block, size_t size);
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struct buffer_head *reiserfs_bread(int dev, unsigned long block, int size,
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int *repeat);
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int bwrite(struct buffer_head *bh);
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void brelse(struct buffer_head *bh);
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void bforget(struct buffer_head *bh);
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void init_rollback_file(char *rollback_file, unsigned int *blocksize,
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FILE * log);
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int open_rollback_file(char *rollback_file, FILE * log);
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void close_rollback_file();
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void do_fsck_rollback(int fd_device, int fd_journal_device, FILE * log);
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void flush_buffers(int);
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void free_buffers(void);
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void invalidate_buffers(int);
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#endif
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