211 lines
5.3 KiB
C
211 lines
5.3 KiB
C
/*
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* ext2fsP.h --- private header file for ext2 library
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*
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* Copyright (C) 1997 Theodore Ts'o.
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*
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* %Begin-Header%
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* This file may be redistributed under the terms of the GNU Library
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* General Public License, version 2.
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* %End-Header%
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*/
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#if HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif
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#include "ext2fs.h"
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#define EXT2FS_MAX_NESTED_LINKS 8
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static inline int ext2fsP_is_disk_device(mode_t mode)
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{
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#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
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return S_ISBLK(mode) || S_ISCHR(mode);
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#else
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return S_ISBLK(mode);
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#endif
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}
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/*
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* Badblocks list
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*/
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struct ext2_struct_u32_list {
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int magic;
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int num;
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int size;
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__u32 *list;
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int badblocks_flags;
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};
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struct ext2_struct_u32_iterate {
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int magic;
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ext2_u32_list bb;
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int ptr;
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};
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/*
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* Directory block iterator definition
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*/
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struct ext2_struct_dblist {
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int magic;
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ext2_filsys fs;
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unsigned long long size;
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unsigned long long count;
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int sorted;
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struct ext2_db_entry2 * list;
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};
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/*
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* For directory iterators
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*/
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struct dir_context {
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ext2_ino_t dir;
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int flags;
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char *buf;
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unsigned int buflen;
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int (*func)(ext2_ino_t dir,
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int entry,
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struct ext2_dir_entry *dirent,
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int offset,
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int blocksize,
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char *buf,
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void *priv_data);
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void *priv_data;
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errcode_t errcode;
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};
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/*
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* Inode cache structure
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*/
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struct ext2_inode_cache {
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void * buffer;
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blk64_t buffer_blk;
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int cache_last;
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unsigned int cache_size;
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int refcount;
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struct ext2_inode_cache_ent *cache;
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};
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struct ext2_inode_cache_ent {
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ext2_ino_t ino;
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struct ext2_inode *inode;
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};
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/*
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* NLS defintions
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*/
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struct ext2fs_nls_table {
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int version;
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const struct ext2fs_nls_ops *ops;
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};
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struct ext2fs_nls_ops {
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int (*casefold)(const struct ext2fs_nls_table *charset,
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const unsigned char *str, size_t len,
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unsigned char *dest, size_t dlen);
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int (*validate)(const struct ext2fs_nls_table *table,
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char *s, size_t len, char **pos);
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int (*casefold_cmp)(const struct ext2fs_nls_table *table,
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const unsigned char *str1, size_t len1,
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const unsigned char *str2, size_t len2);
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};
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/* Function prototypes */
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extern int ext2fs_process_dir_block(ext2_filsys fs,
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blk64_t *blocknr,
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e2_blkcnt_t blockcnt,
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blk64_t ref_block,
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int ref_offset,
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void *priv_data);
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extern errcode_t ext2fs_inline_data_ea_remove(ext2_filsys fs, ext2_ino_t ino);
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extern errcode_t ext2fs_inline_data_expand(ext2_filsys fs, ext2_ino_t ino);
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extern int ext2fs_inline_data_dir_iterate(ext2_filsys fs,
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ext2_ino_t ino,
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void *priv_data);
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/* Generic numeric progress meter */
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struct ext2fs_numeric_progress_struct {
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__u64 max;
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int log_max;
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int skip_progress;
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};
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/*
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* progress callback functions
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*/
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struct ext2fs_progress_ops {
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void (*init)(ext2_filsys fs,
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struct ext2fs_numeric_progress_struct * progress,
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const char *label, __u64 max);
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void (*update)(ext2_filsys fs,
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struct ext2fs_numeric_progress_struct * progress,
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__u64 val);
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void (*close)(ext2_filsys fs,
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struct ext2fs_numeric_progress_struct * progress,
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const char *message);
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};
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extern struct ext2fs_progress_ops ext2fs_numeric_progress_ops;
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extern void ext2fs_numeric_progress_init(ext2_filsys fs,
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struct ext2fs_numeric_progress_struct * progress,
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const char *label, __u64 max);
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extern void ext2fs_numeric_progress_update(ext2_filsys fs,
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struct ext2fs_numeric_progress_struct * progress,
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__u64 val);
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extern void ext2fs_numeric_progress_close(ext2_filsys fs,
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struct ext2fs_numeric_progress_struct * progress,
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const char *message);
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/*
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* 64-bit bitmap support
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*/
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extern errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
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int type, __u64 start, __u64 end,
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__u64 real_end,
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const char * description,
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ext2fs_generic_bitmap *bmap);
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extern void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
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extern errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
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ext2fs_generic_bitmap *dest);
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extern errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
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__u64 new_end,
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__u64 new_real_end);
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extern errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
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errcode_t neq,
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__u64 end, __u64 *oend);
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extern int ext2fs_mark_generic_bmap(ext2fs_generic_bitmap bitmap,
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__u64 arg);
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extern int ext2fs_unmark_generic_bmap(ext2fs_generic_bitmap bitmap,
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__u64 arg);
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extern int ext2fs_test_generic_bmap(ext2fs_generic_bitmap bitmap,
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__u64 arg);
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extern errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bitmap,
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__u64 start, unsigned int num,
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void *in);
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extern errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bitmap,
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__u64 start, unsigned int num,
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void *out);
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extern void ext2fs_warn_bitmap32(ext2fs_generic_bitmap bitmap,const char *func);
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extern int ext2fs_mem_is_zero(const char *mem, size_t len);
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extern int ext2fs_file_block_offset_too_big(ext2_filsys fs,
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struct ext2_inode *inode,
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blk64_t offset);
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/* atexit support */
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typedef void (*ext2_exit_fn)(void *);
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errcode_t ext2fs_add_exit_fn(ext2_exit_fn fn, void *data);
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errcode_t ext2fs_remove_exit_fn(ext2_exit_fn fn, void *data);
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#define EXT2FS_BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2*!!(cond)]))
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