/*      $OpenBSD: vndioctl.h,v 1.12 2023/05/14 18:34:02 krw Exp $       */
/*      $NetBSD: vndioctl.h,v 1.5 1995/01/25 04:46:30 cgd Exp $ */

/*
 * Copyright (c) 1988 University of Utah.
 * Copyright (c) 1990, 1993
 *      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 and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * from: Utah $Hdr: fdioctl.h 1.1 90/07/09$
 *
 *      @(#)vnioctl.h   8.1 (Berkeley) 6/10/93
 */

#ifndef _SYS_VNDIOCTL_H_
#define _SYS_VNDIOCTL_H_

#define VNDNLEN 1024            /* PATH_MAX */

/*
 * Ioctl definitions for file (vnode) disk pseudo-device.
 */
struct vnd_ioctl {
        char            *vnd_file;      /* pathname of file to mount */
        size_t           vnd_secsize;   /* sector size in bytes */
        size_t           vnd_nsectors;  /* number of sectors in a track */
        size_t           vnd_ntracks;   /* number of tracks per cylinder */
        off_t            vnd_size;      /* (returned) size of disk */
        u_char          *vnd_key;
        int              vnd_keylen;
        uint16_t         vnd_type;      /* DTYPE being emulated */
};

/*
 * A simple structure used by userland to query about a specific vnd.
 */
struct vnd_user {
        char    vnu_file[VNDNLEN];      /* vnd file */
        int     vnu_unit;               /* vnd unit */
        dev_t   vnu_dev;                /* vnd device */
        ino_t   vnu_ino;                /* vnd inode */
};

/*
 * Before you can use a unit, it must be configured with VNDIOCSET.
 * The configuration persists across opens and closes of the device;
 * an VNDIOCCLR must be used to reset a configuration.  An attempt to
 * VNDIOCSET an already active unit will return EBUSY.
 */
#define VNDIOCSET       _IOWR('F', 0, struct vnd_ioctl) /* enable disk */
#define VNDIOCCLR       _IOW('F', 1, struct vnd_ioctl)  /* disable disk */
#define VNDIOCGET       _IOWR('F', 3, struct vnd_user)  /* get disk info */

#endif /* !_SYS_VNDIOCTL_H_ */