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/*
* Project: HARTIK (HA-rd R-eal TI-me K-ernel)
*
* Coordinators: Giorgio Buttazzo <giorgio@sssup.it>
* Gerardo Lamastra <gerardo@sssup.it>
*
* Authors : Massimiliano Giorgi <massy@hartik.sssup.it>
* (see authors.txt for full list of hartik's authors)
*
* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
*
* http://www.sssup.it
* http://retis.sssup.it
* http://hartik.sssup.it
*/
/*
* Copyright (C) 1999 Massimiliano Giorgi
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
/*
* CVS : $Id: dentry.h,v 1.1.1.1 2002-03-29 14:12:50 pj Exp $
*
* File: $File$
* Revision: $Revision: 1.1.1.1 $
* Last update: $Date: 2002-03-29 14:12:50 $
*/
/***
The "dentry" structure: it contains a directory entry (only the filename).
***/
#ifndef __DENTRY_H__
#define __DENTRY_H__
#include <fs/limits.h>
#include <fs/const.h>
#include <fs/types.h>
#include <fs/magic.h>
struct qstr {
char name[MAXFILENAMELEN+1];
char *nameptr;
};
#define QSTRNAME(ptr) ((ptr)->nameptr!=NULL?(ptr)->nameptr:(ptr)->name)
struct dentry {
DECLARE_MAGIC(magic);
struct dentry *d_next;
struct dentry *d_prev;
struct dentry *d_parent;
struct dentry *d_child;
__time_t d_acc;
struct qstr d_name;
short d_lock;
struct dentry_operations *d_op;
struct inode *d_inode;
struct super_block *d_sb;
};
int dentry_init(void);
int set_root_dentry(struct super_block *sb);
struct dentry *get_root_dentry(void);
struct dentry *get_dentry(void);
void free_dentry(struct dentry *);
void insert_dentry(struct dentry *den, struct dentry *parent);
void remove_dentry(struct dentry *den);
struct dentry *purge_dentry(void);
int unlink_dentry(struct dentry *den);
int mount_dentry(struct super_block *sb, struct dentry *de);
int umount_dentry(struct super_block *sb);
void getfullname_dentry(struct dentry *act, char *buffer, int size);
/* flags for createflags */
#define DENTRY_NOCREATE 0x00
#define DENTRY_CANCREATE 0x01
#define DENTRY_MUSTCREATE 0x03
#define DENTRY_CREATEMASK 0x03
/* return flags for createflags */
#define DENTRY_CREATED 0x01
#define DENTRY_EXIST 0x02
struct dentry *find_dentry_from_ext(struct dentry *,
char *pathname,
int *createflags);
void unlock_dentry(struct dentry *den);
extern __inline__ struct dentry *find_dentry_from(struct dentry *den,
char *pathname)
{
return find_dentry_from_ext(den,pathname,NULL);
}
#endif