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/*
* ext2fsP.h --- private header file for ext2 library
*
* Copyright (C) 1997 Theodore Ts'o.
*
* %Begin-Header%
* This file may be redistributed under the terms of the GNU Library
* General Public License, version 2.
* %End-Header%
*/
#if HAVE_SYS_STAT_H
#include <sys/stat.h>
#endif
#include "ext2fs.h"
#define EXT2FS_MAX_NESTED_LINKS 8
static inline int ext2fsP_is_disk_device(mode_t mode)
{
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
return S_ISBLK(mode) || S_ISCHR(mode);
#else
return S_ISBLK(mode);
#endif
}
static inline time_t ext2fsP_get_time(ext2_filsys fs)
{
if (fs->now || (fs->flags2 & EXT2_FLAG2_USE_FAKE_TIME))
return fs->now;
return time(NULL);
}
/*
* Badblocks list
*/
struct ext2_struct_u32_list {
int magic;
int num;
int size;
__u32 *list;
int badblocks_flags;
};
struct ext2_struct_u32_iterate {
int magic;
ext2_u32_list bb;
int ptr;
};
/*
* Directory block iterator definition
*/
struct ext2_struct_dblist {
int magic;
ext2_filsys fs;
unsigned long long size;
unsigned long long count;
int sorted;
struct ext2_db_entry2 * list;
};
/*
* For directory iterators
*/
struct dir_context {
ext2_ino_t dir;
int flags;
char *buf;
unsigned int buflen;
int (*func)(ext2_ino_t dir,
int entry,
struct ext2_dir_entry *dirent,
int offset,
int blocksize,
char *buf,
void *priv_data);
void *priv_data;
errcode_t errcode;
};
/*
* Inode cache structure
*/
struct ext2_inode_cache {
void * buffer;
blk64_t buffer_blk;
int cache_last;
unsigned int cache_size;
int refcount;
struct ext2_inode_cache_ent *cache;
};
struct ext2_inode_cache_ent {
ext2_ino_t ino;
struct ext2_inode *inode;
};
/*
* NLS definitions
*/
struct ext2fs_nls_table {
int version;
const struct ext2fs_nls_ops *ops;
};
struct ext2fs_nls_ops {
int (*casefold)(const struct ext2fs_nls_table *charset,
const unsigned char *str, size_t len,
unsigned char *dest, size_t dlen);
int (*validate)(const struct ext2fs_nls_table *table,
char *s, size_t len, char **pos);
int (*casefold_cmp)(const struct ext2fs_nls_table *table,
const unsigned char *str1, size_t len1,
const unsigned char *str2, size_t len2);
};
/* Function prototypes */
extern int ext2fs_process_dir_block(ext2_filsys fs,
blk64_t *blocknr,
e2_blkcnt_t blockcnt,
blk64_t ref_block,
int ref_offset,
void *priv_data);
extern errcode_t ext2fs_inline_data_ea_remove(ext2_filsys fs, ext2_ino_t ino);
extern errcode_t ext2fs_inline_data_expand(ext2_filsys fs, ext2_ino_t ino);
extern int ext2fs_inline_data_dir_iterate(ext2_filsys fs,
ext2_ino_t ino,
void *priv_data);
/* Generic numeric progress meter */
struct ext2fs_numeric_progress_struct {
__u64 max;
int log_max;
int skip_progress;
};
/*
* progress callback functions
*/
struct ext2fs_progress_ops {
void (*init)(ext2_filsys fs,
struct ext2fs_numeric_progress_struct * progress,
const char *label, __u64 max);
void (*update)(ext2_filsys fs,
struct ext2fs_numeric_progress_struct * progress,
__u64 val);
void (*close)(ext2_filsys fs,
struct ext2fs_numeric_progress_struct * progress,
const char *message);
};
extern struct ext2fs_progress_ops ext2fs_numeric_progress_ops;
extern void ext2fs_numeric_progress_init(ext2_filsys fs,
struct ext2fs_numeric_progress_struct * progress,
const char *label, __u64 max);
extern void ext2fs_numeric_progress_update(ext2_filsys fs,
struct ext2fs_numeric_progress_struct * progress,
__u64 val);
extern void ext2fs_numeric_progress_close(ext2_filsys fs,
struct ext2fs_numeric_progress_struct * progress,
const char *message);
/*
* 64-bit bitmap support
*/
extern errcode_t ext2fs_alloc_generic_bmap(ext2_filsys fs, errcode_t magic,
int type, __u64 start, __u64 end,
__u64 real_end,
const char * description,
ext2fs_generic_bitmap *bmap);
extern void ext2fs_free_generic_bmap(ext2fs_generic_bitmap bmap);
extern errcode_t ext2fs_copy_generic_bmap(ext2fs_generic_bitmap src,
ext2fs_generic_bitmap *dest);
extern errcode_t ext2fs_resize_generic_bmap(ext2fs_generic_bitmap bmap,
__u64 new_end,
__u64 new_real_end);
extern errcode_t ext2fs_fudge_generic_bmap_end(ext2fs_generic_bitmap bitmap,
errcode_t neq,
__u64 end, __u64 *oend);
extern int ext2fs_mark_generic_bmap(ext2fs_generic_bitmap bitmap,
__u64 arg);
extern int ext2fs_unmark_generic_bmap(ext2fs_generic_bitmap bitmap,
__u64 arg);
extern int ext2fs_test_generic_bmap(ext2fs_generic_bitmap bitmap,
__u64 arg);
extern errcode_t ext2fs_set_generic_bmap_range(ext2fs_generic_bitmap bitmap,
__u64 start, unsigned int num,
void *in);
extern errcode_t ext2fs_get_generic_bmap_range(ext2fs_generic_bitmap bitmap,
__u64 start, unsigned int num,
void *out);
extern void ext2fs_warn_bitmap32(ext2fs_generic_bitmap bitmap,const char *func);
extern int ext2fs_mem_is_zero(const char *mem, size_t len);
extern int ext2fs_file_block_offset_too_big(ext2_filsys fs,
struct ext2_inode *inode,
blk64_t offset);
/* atexit support */
typedef void (*ext2_exit_fn)(void *);
errcode_t ext2fs_add_exit_fn(ext2_exit_fn fn, void *data);
errcode_t ext2fs_remove_exit_fn(ext2_exit_fn fn, void *data);
#define EXT2FS_BUILD_BUG_ON(cond) ((void)sizeof(char[1 - 2*!!(cond)]))
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