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Annotation of sys/dev/vndioctl.h, Revision 1.1.1.1

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_ */