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Annotation of sys/dev/vndioctl.h, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: vndioctl.h,v 1.6 2004/06/20 18:03:03 pedro Exp $      */
        !             2: /*     $NetBSD: vndioctl.h,v 1.5 1995/01/25 04:46:30 cgd Exp $ */
        !             3:
        !             4: /*
        !             5:  * Copyright (c) 1988 University of Utah.
        !             6:  * Copyright (c) 1990, 1993
        !             7:  *     The Regents of the University of California.  All rights reserved.
        !             8:  *
        !             9:  * This code is derived from software contributed to Berkeley by
        !            10:  * the Systems Programming Group of the University of Utah Computer
        !            11:  * Science Department.
        !            12:  *
        !            13:  * Redistribution and use in source and binary forms, with or without
        !            14:  * modification, are permitted provided that the following conditions
        !            15:  * are met:
        !            16:  * 1. Redistributions of source code must retain the above copyright
        !            17:  *    notice, this list of conditions and the following disclaimer.
        !            18:  * 2. Redistributions in binary form must reproduce the above copyright
        !            19:  *    notice, this list of conditions and the following disclaimer in the
        !            20:  *    documentation and/or other materials provided with the distribution.
        !            21:  * 3. Neither the name of the University nor the names of its contributors
        !            22:  *    may be used to endorse or promote products derived from this software
        !            23:  *    without specific prior written permission.
        !            24:  *
        !            25:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            26:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            27:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            28:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            29:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            30:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            31:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            32:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            33:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            34:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            35:  * SUCH DAMAGE.
        !            36:  *
        !            37:  * from: Utah $Hdr: fdioctl.h 1.1 90/07/09$
        !            38:  *
        !            39:  *     @(#)vnioctl.h   8.1 (Berkeley) 6/10/93
        !            40:  */
        !            41:
        !            42: #ifndef _SYS_VNDIOCTL_H_
        !            43: #define _SYS_VNDIOCTL_H_
        !            44:
        !            45: #define VNDNLEN        90
        !            46:
        !            47: /*
        !            48:  * Ioctl definitions for file (vnode) disk pseudo-device.
        !            49:  */
        !            50: struct vnd_ioctl {
        !            51:        char    *vnd_file;      /* pathname of file to mount */
        !            52:        off_t   vnd_size;       /* (returned) size of disk */
        !            53:        u_char  *vnd_key;
        !            54:        int     vnd_keylen;
        !            55: };
        !            56:
        !            57: /*
        !            58:  * A simple structure used by userland to query about a specific vnd.
        !            59:  */
        !            60: struct vnd_user {
        !            61:        char    vnu_file[VNDNLEN];      /* vnd file */
        !            62:        int     vnu_unit;               /* vnd unit */
        !            63:        dev_t   vnu_dev;                /* vnd device */
        !            64:        ino_t   vnu_ino;                /* vnd inode */
        !            65: };
        !            66:
        !            67: /*
        !            68:  * Before you can use a unit, it must be configured with VNDIOCSET.
        !            69:  * The configuration persists across opens and closes of the device;
        !            70:  * an VNDIOCCLR must be used to reset a configuration.  An attempt to
        !            71:  * VNDIOCSET an already active unit will return EBUSY.
        !            72:  */
        !            73: #define VNDIOCSET      _IOWR('F', 0, struct vnd_ioctl) /* enable disk */
        !            74: #define VNDIOCCLR      _IOW('F', 1, struct vnd_ioctl)  /* disable disk */
        !            75: #define VNDIOCGET      _IOWR('F', 2, struct vnd_user)  /* get disk info */
        !            76:
        !            77: #endif /* !_SYS_VNDIOCTL_H_ */