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>
414 lines
17 KiB
C
414 lines
17 KiB
C
/*
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* Copyright 2000-2004 by Hans Reiser, licensing governed by
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* reiserfsprogs/README
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*/
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#ifndef REISERFSPROGS_LIB_H
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#define REISERFSPROGS_LIB_H
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#define BADBLOCK_DIRID 1
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#define BADBLOCK_OBJID (__u32)-1
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typedef struct reiserfs_filsys reiserfs_filsys_t;
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#include "reiserfs_fs.h"
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struct _bitmap {
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unsigned long bm_byte_size;
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unsigned long bm_bit_size;
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char *bm_map;
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unsigned long bm_set_bits;
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int bm_dirty; /* used for fetched bitmap */
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};
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typedef struct _bitmap reiserfs_bitmap_t;
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typedef __u32(*hashf_t) (const char *, int);
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struct reiserfs_filsys {
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unsigned int fs_blocksize;
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int fs_format; /* on-disk format version */
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hashf_t fs_hash_function; /* pointer to function which is used to sort
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names in directory. It is set by
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reiserfs_open if it is set in the super
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block, otherwise it is set by first
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is_properly_hashed */
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char *fs_file_name; /* file name of underlying device */
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int fs_dev; /* descriptor of opened block device file */
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struct buffer_head *fs_super_bh; /* buffer containing super block */
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struct reiserfs_super_block *fs_ondisk_sb; /* pointer to its b_data */
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reiserfs_bitmap_t *fs_bitmap2; /* ondisk bitmap after
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reiserfs_open_ondisk_bitmap */
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/* opened journal fields */
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char *fs_j_file_name; /* file name of relocated journal device */
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int fs_journal_dev; /* descriptor of opened journal device */
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struct buffer_head *fs_jh_bh; /* buffer containing journal header */
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/* badblocks */
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reiserfs_bitmap_t *fs_badblocks_bm;
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int fs_dirt;
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int fs_flags;
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void *fs_vp;
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int (*block_allocator) (reiserfs_filsys_t *fs,
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unsigned long *free_blocknrs,
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unsigned long start, int amount_needed);
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int (*block_deallocator) (reiserfs_filsys_t *fs, unsigned long block);
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};
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struct _transaction {
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unsigned long mount_id;
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unsigned long trans_id;
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unsigned long desc_blocknr;
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unsigned long trans_len;
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unsigned long commit_blocknr;
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unsigned long next_trans_offset;
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};
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typedef struct _transaction reiserfs_trans_t;
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/* reiserfslib.c */
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void init_tb_struct(struct tree_balance *tb, reiserfs_filsys_t *,
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struct reiserfs_path *path, int size);
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reiserfs_filsys_t *reiserfs_open(char *filename, int flags, int *error,
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void *vp, int skip_check);
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reiserfs_filsys_t *reiserfs_create(char *filename, int version,
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unsigned long block_count, int block_size,
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int default_journal, int new_format);
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void reiserfs_flush(reiserfs_filsys_t *);
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void reiserfs_free(reiserfs_filsys_t *);
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void reiserfs_close(reiserfs_filsys_t *);
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void reiserfs_reopen(reiserfs_filsys_t *, int flags);
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int is_opened_rw(reiserfs_filsys_t *fs);
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/*
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void reiserfs_read_bitmap_blocks (reiserfs_filsys_t *);
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void reiserfs_free_bitmap_blocks (reiserfs_filsys_t *);
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*/
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int no_reiserfs_found(reiserfs_filsys_t *);
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int block_size_ok(int blocksize, int force);
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int is_block_count_correct(unsigned long block_of_super_block,
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unsigned int block_size, unsigned long block_count,
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unsigned long journal_size);
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//unsigned long min_block_amount (int block_size, unsigned long journal_size);
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unsigned long get_size_of_journal_or_reserved_area(struct reiserfs_super_block
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*sb);
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int reiserfs_new_blocknrs(reiserfs_filsys_t *,
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unsigned long *free_blocknrs, unsigned long start,
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int amount_needed);
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int reiserfs_free_block(reiserfs_filsys_t *, unsigned long block);
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int spread_bitmaps(reiserfs_filsys_t *);
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int filesystem_dirty(reiserfs_filsys_t *);
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void mark_filesystem_dirty(reiserfs_filsys_t *);
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void reiserfs_paste_into_item(reiserfs_filsys_t *, struct reiserfs_path *path,
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const void *body, int size);
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void reiserfs_insert_item(reiserfs_filsys_t *, struct reiserfs_path *path,
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struct item_head *ih, const void *body);
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int reiserfs_locate_entry(reiserfs_filsys_t *, struct reiserfs_key *dir,
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char *name, struct reiserfs_path *path);
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int reiserfs_find_entry(reiserfs_filsys_t *, struct reiserfs_key *dir,
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char *name, unsigned int *min_gen_counter,
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struct reiserfs_key *key);
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int reiserfs_add_entry(reiserfs_filsys_t *, struct reiserfs_key *dir,
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char *name, int name_len, struct reiserfs_key *key,
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__u16 fsck_need);
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struct reiserfs_key *uget_lkey(struct reiserfs_path *path);
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struct reiserfs_key *uget_rkey(struct reiserfs_path *path);
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int reiserfs_search_by_key_3(reiserfs_filsys_t *, struct reiserfs_key *key,
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struct reiserfs_path *path);
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int reiserfs_search_by_key_4(reiserfs_filsys_t *, struct reiserfs_key *key,
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struct reiserfs_path *path);
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int reiserfs_search_by_entry_key(reiserfs_filsys_t *, struct reiserfs_key *key,
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struct reiserfs_path *path);
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int usearch_by_position(reiserfs_filsys_t *, struct reiserfs_key *key,
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int version, struct reiserfs_path *path);
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struct reiserfs_key *reiserfs_next_key(struct reiserfs_path *path);
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void copy_key(void *to, void *from);
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void copy_short_key(void *to, void *from);
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void copy_item_head(void *p_v_to, void *p_v_from);
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int comp_keys(const void *k1, const void *k2);
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int comp_keys_3(const void *k1, const void *k2);
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int comp_short_keys(const void *p_s_key1, const void *p_s_key2);
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int comp_items(struct item_head *p_s_ih, struct reiserfs_path *p_s_path);
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__u32 hash_value(hashf_t func, char *name, int namelen);
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int create_dir_sd(reiserfs_filsys_t *fs,
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struct reiserfs_path *path, struct reiserfs_key *key,
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void (*modify_item) (struct item_head *, void *));
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void make_sure_root_dir_exists(reiserfs_filsys_t *fs,
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void (*modyfy_item) (struct item_head *, void *),
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int ih_flags);
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typedef void (*badblock_func_t) (reiserfs_filsys_t *fs,
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struct reiserfs_path *badblock_path,
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void *data);
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void mark_badblock(reiserfs_filsys_t *fs, struct reiserfs_path *badblock_path,
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void *data);
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int create_badblock_bitmap(reiserfs_filsys_t *fs, char *badblocks_file);
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void add_badblock_list(reiserfs_filsys_t *fs, int no_badblock_in_tree_yet);
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void badblock_list(reiserfs_filsys_t *fs, badblock_func_t action, void *data);
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#define reiserfs_fs_bmap_nr(fs) reiserfs_bmap_nr(get_sb_block_count(fs->fs_ondisk_sb), fs->fs_blocksize)
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#define reiserfs_bmap_nr(count, blk_size) ((count - 1) / (blk_size * 8) + 1)
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#define reiserfs_bmap_over(nr) (nr > ((1LL << 16) - 1))
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extern struct reiserfs_key root_dir_key;
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extern struct reiserfs_key parent_root_dir_key;
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extern struct reiserfs_key lost_found_dir_key;
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extern __u16 root_dir_format;
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extern __u16 lost_found_dir_format;
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/* bitmap.c */
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int reiserfs_open_ondisk_bitmap(reiserfs_filsys_t *);
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int reiserfs_create_ondisk_bitmap(reiserfs_filsys_t *);
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void reiserfs_free_ondisk_bitmap(reiserfs_filsys_t *);
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void reiserfs_close_ondisk_bitmap(reiserfs_filsys_t *);
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int reiserfs_flush_to_ondisk_bitmap(reiserfs_bitmap_t *bm,
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reiserfs_filsys_t *fs);
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unsigned int reiserfs_calc_bmap_nr(reiserfs_filsys_t *fs, unsigned int blocks);
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reiserfs_bitmap_t *reiserfs_create_bitmap(unsigned int bit_count);
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int reiserfs_expand_bitmap(reiserfs_bitmap_t *bm, unsigned int bit_count);
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void reiserfs_shrink_bitmap(reiserfs_bitmap_t *bm, unsigned int bit_count);
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void reiserfs_delete_bitmap(reiserfs_bitmap_t *bm);
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void reiserfs_bitmap_copy(reiserfs_bitmap_t *to, reiserfs_bitmap_t *from);
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int reiserfs_bitmap_compare(reiserfs_bitmap_t *bm1, reiserfs_bitmap_t *bm2);
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void reiserfs_bitmap_disjunction(reiserfs_bitmap_t *disk,
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reiserfs_bitmap_t *cont);
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void reiserfs_bitmap_delta(reiserfs_bitmap_t *base,
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reiserfs_bitmap_t *exclude);
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void reiserfs_bitmap_set_bit(reiserfs_bitmap_t *bm, unsigned int bit_number);
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void reiserfs_bitmap_clear_bit(reiserfs_bitmap_t *bm, unsigned int bit_number);
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int reiserfs_bitmap_test_bit(reiserfs_bitmap_t *bm, unsigned int bit_number);
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int reiserfs_bitmap_find_zero_bit(reiserfs_bitmap_t *bm, unsigned long *start);
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/*int reiserfs_fetch_ondisk_bitmap (reiserfs_bitmap_t *bm, reiserfs_filsys_t *);*/
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/*int reiserfs_flush_bitmap (reiserfs_bitmap_t *bm, reiserfs_filsys_t *);*/
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void reiserfs_bitmap_zero(reiserfs_bitmap_t *bm);
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void reiserfs_bitmap_fill(reiserfs_bitmap_t *bm);
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unsigned int reiserfs_bitmap_ones(reiserfs_bitmap_t *bm);
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unsigned int reiserfs_bitmap_zeros(reiserfs_bitmap_t *bm);
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FILE *open_file(char *filename, char *option);
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void close_file(FILE * fp);
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void reiserfs_bitmap_save(FILE * fp, reiserfs_bitmap_t *bm);
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/* this probably should be in fsck */
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void reiserfs_begin_stage_info_save(FILE * file, unsigned long stage);
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void reiserfs_end_stage_info_save(FILE * file);
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int is_stage_magic_correct(FILE * fp);
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//void reiserfs_stage_info_save(struct fsck_data *, FILE * file);
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reiserfs_bitmap_t *reiserfs_bitmap_load(FILE * fp);
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void reiserfs_bitmap_invert(reiserfs_bitmap_t *bm);
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int reiserfs_remove_entry(reiserfs_filsys_t *, struct reiserfs_key *key);
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/* node_formats.c */
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#define THE_LEAF 1
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#define THE_INTERNAL 2
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#define THE_SUPER 3
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#define THE_JDESC 4
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#define HAS_IH_ARRAY 5
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#define THE_UNKNOWN 6
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int is_blocksize_correct(unsigned int blocksize);
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int is_reiserfs_3_5_magic_string(struct reiserfs_super_block *rs);
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int is_reiserfs_3_6_magic_string(struct reiserfs_super_block *rs);
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int is_reiserfs_jr_magic_string(struct reiserfs_super_block *rs);
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int does_look_like_super_block(struct reiserfs_super_block *rs);
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int is_any_reiserfs_magic_string(struct reiserfs_super_block *rs);
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int get_reiserfs_format(struct reiserfs_super_block *sb);
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int reiserfs_super_block_size(struct reiserfs_super_block *rs);
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/*int magic_2_version (struct reiserfs_super_block * rs);*/
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int is_prejournaled_reiserfs(struct reiserfs_super_block *rs);
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int who_is_this(char *buf, int blocksize);
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int leaf_count_ih(char *buf, int blocksize);
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int leaf_free_space_estimate(char *buf, int blocksize);
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int is_a_leaf(char *buf, int blocksize);
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int leaf_item_number_estimate(struct buffer_head *bh);
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char *which_block(int code);
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int get_journal_size(reiserfs_filsys_t *);
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int not_data_block(reiserfs_filsys_t *, unsigned long block);
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int not_journalable(reiserfs_filsys_t *, unsigned long block);
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int block_of_bitmap(reiserfs_filsys_t *, unsigned long block);
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int block_of_journal(reiserfs_filsys_t *, unsigned long block);
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int is_tree_node(struct buffer_head *bh, int level);
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int is_properly_hashed(reiserfs_filsys_t *,
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char *name, int namelen, __u32 offset);
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int dir_entry_bad_location(struct reiserfs_de_head *deh,
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struct item_head *ih, int first);
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void make_dir_stat_data(int blocksize, int key_format,
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__u32 dirid, __u32 objectid,
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struct item_head *ih, void *sd);
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void make_empty_dir_item_v1(char *body, __u32 dirid, __u32 objid,
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__u32 par_dirid, __u32 par_objid);
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void make_empty_dir_item(char *body, __u32 dirid, __u32 objid,
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__u32 par_dirid, __u32 par_objid);
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int reiserfs_is_fs_consistent(reiserfs_filsys_t *fs);
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typedef void (*item_action_t) (struct buffer_head * bh, struct item_head * ih);
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typedef void (*item_head_action_t) (struct item_head * ih);
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void for_every_item(struct buffer_head *bh, item_head_action_t action,
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item_action_t *actions);
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int key_format(const struct reiserfs_key *key);
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unsigned long long get_offset(const struct reiserfs_key *key);
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int uniqueness2type(__u32 uniqueness);
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__u32 type2uniqueness(int type);
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int get_type(const struct reiserfs_key *key);
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char *key_of_what(const struct reiserfs_key *key);
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int type_unknown(struct reiserfs_key *key);
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void set_type(int format, struct reiserfs_key *key, int type);
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void set_offset(int format, struct reiserfs_key *key, loff_t offset);
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void set_type_and_offset(int format, struct reiserfs_key *key, loff_t offset,
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int type);
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typedef int (*check_unfm_func_t) (reiserfs_filsys_t *, __u32);
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int is_it_bad_item(reiserfs_filsys_t *, struct item_head *, char *,
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check_unfm_func_t, int bad_dir);
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#define hash_func_is_unknown(fs) ((fs)->fs_hash_function == 0)
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#define reiserfs_hash(fs) ((fs)->fs_hash_function)
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int known_hashes(void);
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char *code2name(unsigned int code);
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int func2code(hashf_t func);
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hashf_t code2func(unsigned int code);
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hashf_t name2func(char *hash);
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int find_hash_in_use(char *name, int namelen, __u32 deh_offset,
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unsigned int code_to_try_first);
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int entry_length(struct item_head *ih, struct reiserfs_de_head *deh,
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int pos_in_item);
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char *name_in_entry(struct reiserfs_de_head *deh, int pos_in_item);
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int name_in_entry_length(struct item_head *ih,
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struct reiserfs_de_head *deh, int pos_in_item);
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int name_length(char *name, int key_format);
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/* access to stat data fields */
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void get_set_sd_field(int field, struct item_head *ih, void *sd,
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void *value, int set);
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#define GET_SD_MODE 0
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#define GET_SD_SIZE 1
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#define GET_SD_NLINK 2
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#define GET_SD_BLOCKS 3
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#define GET_SD_FIRST_DIRECT_BYTE 4
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#define get_sd_mode(ih,sd,pmode) get_set_sd_field (GET_SD_MODE, ih, sd, pmode, 0/*get*/)
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#define set_sd_mode(ih,sd,pmode) get_set_sd_field (GET_SD_MODE, ih, sd, pmode, 1/*set*/)
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#define get_sd_size(ih,sd,psize) get_set_sd_field (GET_SD_SIZE, ih, sd, psize, 0/*get*/)
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#define set_sd_size(ih,sd,psize) get_set_sd_field (GET_SD_SIZE, ih, sd, psize, 1/*set*/)
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#define get_sd_blocks(ih,sd,pblocks) get_set_sd_field (GET_SD_BLOCKS, ih, sd, pblocks, 0/*get*/)
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#define set_sd_blocks(ih,sd,pblocks) get_set_sd_field (GET_SD_BLOCKS, ih, sd, pblocks, 1/*set*/)
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//#define get_sd_rdev(ih,sd,pblocks) get_set_sd_field (GET_SD_RDEV, ih, sd, pblocks, 0/*get*/)
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//#define set_sd_rdev(ih,sd,pblocks) get_set_sd_field (GET_SD_RDEV, ih, sd, pblocks, 1/*set*/)
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//#define get_sd_generation(ih,sd,pblocks) get_set_sd_field (GET_SD_GENER, ih, sd, pblocks, 0/*get*/)
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//#define set_sd_generation(ih,sd,pblocks) get_set_sd_field (GET_SD_GENER, ih, sd, pblocks, 1/*set*/)
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#define get_sd_nlink(ih,sd,pnlink) get_set_sd_field (GET_SD_NLINK, ih, sd, pnlink, 0/*get*/)
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#define set_sd_nlink(ih,sd,pnlink) get_set_sd_field (GET_SD_NLINK, ih, sd, pnlink, 1/*set*/)
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#define get_sd_first_direct_byte(ih,sd,pfdb) get_set_sd_field (GET_SD_FIRST_DIRECT_BYTE, ih, sd, pfdb, 0/*get*/)
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#define set_sd_first_direct_byte(ih,sd,pfdb) get_set_sd_field (GET_SD_FIRST_DIRECT_BYTE, ih, sd, pfdb, 1/*set*/)
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int is_objectid_used(reiserfs_filsys_t *fs, __u32 objectid);
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void mark_objectid_used(reiserfs_filsys_t *fs, __u32 objectid);
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/* journal.c */
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int get_boundary_transactions(reiserfs_filsys_t *, reiserfs_trans_t *,
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reiserfs_trans_t *);
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int next_transaction(reiserfs_filsys_t *, reiserfs_trans_t *, reiserfs_trans_t);
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int replay_one_transaction(reiserfs_filsys_t *, reiserfs_trans_t *);
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typedef void (*action_on_trans_t) (reiserfs_filsys_t *, reiserfs_trans_t *);
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void for_each_transaction(reiserfs_filsys_t *, action_on_trans_t);
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typedef void (*action_on_block_t) (reiserfs_filsys_t *, reiserfs_trans_t *,
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unsigned int index,
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unsigned long in_journal,
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unsigned long in_place);
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void for_each_block(reiserfs_filsys_t *fs, reiserfs_trans_t *trans,
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action_on_block_t action);
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int reiserfs_open_journal(reiserfs_filsys_t *, char *, int flags);
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int reiserfs_journal_params_check(reiserfs_filsys_t *fs);
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int reiserfs_create_journal(reiserfs_filsys_t *fs, char *j_filename,
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unsigned long offset, unsigned long len,
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int transaction_max_size, int force);
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int reiserfs_journal_opened(reiserfs_filsys_t *);
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void reiserfs_flush_journal(reiserfs_filsys_t *fs);
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void reiserfs_free_journal(reiserfs_filsys_t *fs);
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void reiserfs_close_journal(reiserfs_filsys_t *);
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void reiserfs_reopen_journal(reiserfs_filsys_t *fs, int flag);
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__u32 advise_journal_max_trans_age(void);
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__u32 advise_journal_max_commit_age(void);
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__u32 advise_journal_max_batch(unsigned long journal_trans_max);
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__u32 advise_journal_max_trans_len(__u32 desired, __u32 journal_size,
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int blocksize, int verbose);
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|
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/* prints.c */
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void print_indirect_item(FILE * fp, struct buffer_head *bh, int item_num);
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void print_block(FILE * fp, reiserfs_filsys_t *, struct buffer_head *bh, ...); //int print_mode, int first, int last);
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int print_super_block(FILE * fp, reiserfs_filsys_t *, char *file_name,
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struct buffer_head *bh, int short_print);
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void print_journal(reiserfs_filsys_t *);
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void print_journal_header(reiserfs_filsys_t *fs);
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void reiserfs_warning(FILE * fp, const char *fmt, ...);
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char ftypelet(mode_t mode);
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void reiserfs_print_item(FILE * fp, struct buffer_head *bh,
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struct item_head *ih);
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void print_filesystem_state(FILE * fp, reiserfs_filsys_t *fs);
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void print_one_transaction(reiserfs_filsys_t *fs, reiserfs_trans_t *trans);
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void print_journal_params(FILE * fp, struct journal_params *jp);
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char *get_reiserfs_version(__u16 version);
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int can_we_format_it(char *device_name, int force);
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|
|
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#define reiserfs_panic(fmt, list...) \
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{\
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fflush (stdout);\
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fprintf (stderr, "%s %d %s\n", __FILE__, __LINE__, __FUNCTION__);\
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reiserfs_warning (stderr, (const char *)fmt, ## list);\
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reiserfs_warning (stderr, "\n" );\
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|
abort ();\
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}
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#define reiserfs_exit(val, fmt, list...) \
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|
{\
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|
fflush (stdout);\
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reiserfs_warning (stderr, (const char *)fmt, ## list);\
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reiserfs_warning (stderr, "\n" );\
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exit (val);\
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|
}
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|
|
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#define check_forcing_ask_confirmation(force) \
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|
if (force < 1) {\
|
|
/* avoid formatting it without being forced */\
|
|
reiserfs_warning (stderr, "Use -f to force over\n");\
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|
return 0;\
|
|
}\
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|
if (force < 2) {\
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|
if (!user_confirmed (stderr, "Continue (y/n):", "y\n"))\
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|
return 0;\
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|
}\
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|
|
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#endif /* REISERFSPROGS_LIB_H */
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