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/*
 * Copyright (c) 1988 University of Utah.
 * Copyright (c) 1990 The Regents of the University of California.
 * All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * the Systems Programming Group of the University of Utah Computer
 * Science Department.
 *
 * Redistribution is only permitted until one year after the first shipment
 * of 4.4BSD by the Regents.  Otherwise, redistribution and use in source and
 * binary forms are permitted provided that: (1) source distributions retain
 * this entire copyright notice and comment, and (2) distributions including
 * binaries display the following acknowledgement:  This product includes
 * software developed by the University of California, Berkeley and its
 * contributors'' in the documentation or other materials provided with the
 * distribution and in all advertising materials mentioning features or use
 * of this software.  Neither the name of the University nor the names of
 * its contributors may be used to endorse or promote products derived from
 * this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 *
 * from: Utah $Hdr: fdioctl.h 1.1 89/11/20$
 *
 *	@(#)fdioctl.h	7.1 (Berkeley) 5/8/90
 */

/*
 * Ioctl definitions for file (vnode) disk pseudo-device.
 */

#define FDISKFILE	"/etc/fdisks"	/* default config file */

struct fd_ioctl {
	char	*fd_file;	/* pathname of file to mount */
	int	fd_size;	/* (returned) size of disk */
};

/*
 * Before you can use a unit, it must be configured with FDIOCSET.
 * The configuration persists across opens and closes of the device;
 * an FDIOCCLR must be used to reset a configuration.  An attempt to
 * FDIOCSET an already active unit will return EBUSY.
 */
#define FDIOCSET	_IOWR('F', 0, struct fd_ioctl)	/* enable disk */
#define FDIOCCLR	_IOW('F', 1, struct fd_ioctl)	/* disable disk */

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