/* Header file for mounting/unmount Linux filesystems.
   Copyright (C) 1996, 1997 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library 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 of the
   License, or (at your option) any later version.

   The GNU C Library 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

/* This is taken from /usr/include/linux/fs.h.  */

#ifndef _SYS_MOUNT_H

#define _SYS_MOUNT_H	1
#include <features.h>

#include <sys/ioctl.h>

__BEGIN_DECLS

#define BLOCK_SIZE	1024
#define BLOCK_SIZE_BITS	10


/* These are the fs-independent mount-flags: up to 16 flags are
   supported  */
#define MS_RDONLY	1	/* Mount read-only.  */
#define MS_NOSUID	2	/* Ignore suid and sgid bits.  */
#define MS_NODEV	4	/* Disallow access to device special files.  */
#define MS_NOEXEC	8	/* Disallow program execution.  */
#define MS_SYNCHRONOUS	16	/* Writes are synced at once.  */
#define MS_REMOUNT	32	/* Alter flags of a mounted FS.  */
#define MS_MANDLOCK	64	/* Allow mandatory locks on an FS.  */
#define S_WRITE		128	/* Write on file/directory/symlink.  */
#define S_APPEND	256	/* Append-only file.  */
#define S_IMMUTABLE	512	/* Immutable file.  */
#define MS_NOATIME	1024	/* Do not update access times.  */


/* Flags that can be altered by MS_REMOUNT  */
#define MS_RMT_MASK (MS_RDONLY | MS_MANDLOCK)


/* Magic mount flag number. Has to be or-ed to the flag values.  */

#define MS_MGC_VAL 0xc0ed0000	/* Magic flag number to indicate "new" flags */
#define MS_MGC_MSK 0xffff0000	/* Magic flag number mask */


/* The read-only stuff doesn't really belong here, but any other place
   is probably as bad and I don't want to create yet another include
   file.  */

#define BLKROSET   _IO(0x12, 93) /* Set device read-only (0 = read-write).  */
#define BLKROGET   _IO(0x12, 94) /* Get read-only status (0 = read_write).  */
#define BLKRRPART  _IO(0x12, 95) /* Re-read partition table.  */
#define BLKGETSIZE _IO(0x12, 96) /* Return device size.  */
#define BLKFLSBUF  _IO(0x12, 97) /* Flush buffer cache.  */
#define BLKRASET   _IO(0x12, 98) /* Set read ahead for block device.  */
#define BLKRAGET   _IO(0x12, 99) /* Get current read ahead setting.  */


/* Mount a filesystem.  */
extern int mount __P ((__const char *__special_file, __const char *__dir,
		       __const char *__fstype, unsigned long int __rwflag,
		       __const void *__data));

/* Unmount a filesystem.  */
extern int umount __P ((__const char *__special_file));

__END_DECLS

#endif /* _SYS_MOUNT_H */