directory.h

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#ifndef FILESYS_DIRECTORY_H
#define FILESYS_DIRECTORY_H
 
#include <stdbool.h>
#include <stddef.h>
#include "devices/disk.h"
 
/* Maximum length of a file name component.
 * This is the traditional UNIX maximum length.
 * After directories are implemented, this maximum length may be
 * retained, but much longer full path names must be allowed. */
#define NAME_MAX 14
 
struct inode;
 
/* Opening and closing directories. */
bool dir_create (disk_sector_t sector, size_t entry_cnt);
struct dir *dir_open (struct inode *);
struct dir *dir_open_root (void);
struct dir *dir_reopen (struct dir *);
void dir_close (struct dir *);
struct inode *dir_get_inode (struct dir *);
 
/* Reading and writing. */
bool dir_lookup (const struct dir *, const char *name, struct inode **);
bool dir_add (struct dir *, const char *name, disk_sector_t);
bool dir_remove (struct dir *, const char *name);
bool dir_readdir (struct dir *, char name[NAME_MAX + 1]);
 
#endif /* filesys/directory.h */