backend/filedescriptor.h

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/*
  filedescriptor.h  -  file handling

  Copyright (C)         Lumiera.org
    2008,               Christian Thaeter <ct@pipapo.org>

  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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef LUMIERA_FILEDESCRIPTOR_H
#define LUMIERA_FILEDESCRIPTOR_H

#include "lib/mutex.h"
#include "lib/psplay.h"
#include "lib/llist.h"


#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

typedef struct lumiera_filedescriptor_struct lumiera_filedescriptor;
typedef lumiera_filedescriptor* LumieraFiledescriptor;


#include "backend/filehandle.h"
#include "backend/file.h"
#include "backend/mmapings.h"

struct lumiera_filedescriptor_struct
{
  psplaynode node;

  struct stat stat;

  off_t realsize;

  int flags;

  lumiera_mutex lock;

  LumieraFilehandle handle;

  LumieraMMapings mmapings;

  llist files;
};

void
lumiera_filedescriptor_registry_init (void);

void
lumiera_filedescriptor_registry_destroy (void);


LumieraFiledescriptor
lumiera_filedescriptor_acquire (const char* name, int flags, LList filenode);


void
lumiera_filedescriptor_release (LumieraFiledescriptor self, const char* name, LList filenode);

int
lumiera_filedescriptor_handle_acquire (LumieraFiledescriptor self);

void
lumiera_filedescriptor_handle_release (LumieraFiledescriptor self);

const char*
lumiera_filedescriptor_name (LumieraFiledescriptor self);

int
lumiera_filedescriptor_flags (LumieraFiledescriptor self);

int
lumiera_filedescriptor_samestat (LumieraFiledescriptor self, struct stat* stat);

LumieraFiledescriptor
lumiera_filedescriptor_new (LumieraFiledescriptor template);

void
lumiera_filedescriptor_delete (LumieraFiledescriptor self, const char* name);

#endif

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