Jeff Mahoney
b23d40f723
In order to convert reiserfscore into a externally-usable library, we need to rename structures so they won't collide with other namespaces. Signed-off-by: Jeff Mahoney <jeffm@suse.com>
413 lines
17 KiB
C
413 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 *, struct reiserfs_path *path, int size);
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reiserfs_filsys_t * reiserfs_open (char * filename, int flags, int * error, void * vp, int skip_check);
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reiserfs_filsys_t * reiserfs_create (char * filename, int version, unsigned long block_count,
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int block_size, 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, unsigned int block_size,
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unsigned long block_count, 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 * 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, char * name,
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struct reiserfs_path *path);
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int reiserfs_find_entry (reiserfs_filsys_t *, struct reiserfs_key *dir, char * name,
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unsigned int * min_gen_counter, struct reiserfs_key *key);
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int reiserfs_add_entry (reiserfs_filsys_t *, struct reiserfs_key *dir, char * name, int name_len,
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struct reiserfs_key *key, __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, 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, 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, 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, reiserfs_bitmap_t * cont);
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void reiserfs_bitmap_delta (reiserfs_bitmap_t * base, 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, 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, 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, int blocksize, int verbose);
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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, 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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#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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#define check_forcing_ask_confirmation(force) \
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if (force < 1) {\
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/* avoid formatting it without being forced */\
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reiserfs_warning (stderr, "Use -f to force over\n");\
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return 0;\
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}\
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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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#endif /* REISERFSPROGS_LIB_H */
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