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/* GNU mailutils - a suite of utilities for electronic mail
   Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU Library General Public License as published by
   the Free Software Foundation; either version 2, 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 Library General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

#ifndef MAILUTILS_SYS_MSTREAM_H
#define MAILUTILS_SYS_MSTREAM_H

#include <unistd.h>

#ifdef DMALLOC
# include <dmalloc.h>
#endif

#include <mailutils/sys/stream.h>
#include <mailutils/refcount.h>

#ifdef _POSIX_MAPPED_FILES

#ifdef __cplusplus
extern "C" {
#endif

struct _stream_mmap
{
  struct _stream base;
  mu_refcount_t refcount;
  int fd;
  int flags;
  int mflags;
  char *ptr;
  size_t size;
};

extern int  _stream_mmap_ctor __P ((struct _stream_mmap *));
extern void _stream_mmap_dtor __P ((stream_t));
extern int  _stream_mmap_ref  __P ((stream_t));
extern void _stream_mmap_destroy __P ((stream_t *));
extern int  _stream_mmap_open    __P ((stream_t, const char *, int, int));
extern int  _stream_mmap_close   __P ((stream_t));
extern int  _stream_mmap_read __P ((stream_t, void *, size_t, off_t, size_t *));
extern int  _stream_mmap_readline __P ((stream_t, char *, size_t, off_t, size_t *));
extern int  _stream_mmap_write __P ((stream_t, const void *, size_t, off_t, size_t *));
extern int  _stream_mmap_get_fd __P ((stream_t, int *));
extern int  _stream_mmap_get_flags __P ((stream_t, int *));
extern int  _stream_mmap_get_size  __P ((stream_t, off_t *));
extern int  _stream_mmap_truncate  __P ((stream_t, off_t));
extern int  _stream_mmap_flush     __P ((stream_t));
extern int  _stream_mmap_get_state __P ((stream_t, enum stream_state *));
extern int  _stream_mmap_tell      __P ((stream_t, off_t *));
extern int  _stream_mmap_is_seekable __P ((stream_t));
extern int  _stream_mmap_is_readready __P ((stream_t, int));
extern int  _stream_mmap_is_writeready __P ((stream_t, int));
extern int  _stream_mmap_is_exceptionpending __P ((stream_t, int));
extern int  _stream_mmap_is_open __P ((stream_t));
#endif

#ifdef __cplusplus
}
#endif

#endif /* _MAILUTILS_SYS_MSTREAM_H */

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