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/* $OpenBSD: specdev.h,v 1.2 1996/02/27 08:05:17 niklas Exp $ */
/* $NetBSD: specdev.h,v 1.12 1996/02/13 13:13:01 mycroft Exp $ */
/*
* Copyright (c) 1990, 1993
* The Regents of the University of California. All rights reserved.
*
* 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. 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.
*
* @(#)specdev.h 8.3 (Berkeley) 8/10/94
*/
/*
* This structure defines the information maintained about
* special devices. It is allocated in checkalias and freed
* in vgone.
*/
struct specinfo {
struct vnode **si_hashchain;
struct vnode *si_specnext;
long si_flags;
dev_t si_rdev;
};
/*
* Exported shorthand
*/
#define v_rdev v_specinfo->si_rdev
#define v_hashchain v_specinfo->si_hashchain
#define v_specnext v_specinfo->si_specnext
#define v_specflags v_specinfo->si_flags
/*
* Flags for specinfo
*/
#define SI_MOUNTEDON 0x0001 /* block special device is mounted on */
/*
* Special device management
*/
#define SPECHSZ 64
#if ((SPECHSZ&(SPECHSZ-1)) == 0)
#define SPECHASH(rdev) (((rdev>>5)+(rdev))&(SPECHSZ-1))
#else
#define SPECHASH(rdev) (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ)
#endif
struct vnode *speclisth[SPECHSZ];
/*
* Prototypes for special file operations on vnodes.
*/
extern int (**spec_vnodeop_p) __P((void *));
struct nameidata;
struct componentname;
struct ucred;
struct flock;
struct buf;
struct uio;
int spec_badop __P((void *));
int spec_ebadf __P((void *));
int spec_lookup __P((void *));
#define spec_create spec_badop
#define spec_mknod spec_badop
int spec_open __P((void *));
int spec_close __P((void *));
#define spec_access spec_ebadf
#define spec_getattr spec_ebadf
#define spec_setattr spec_ebadf
int spec_read __P((void *));
int spec_write __P((void *));
#define spec_lease_check nullop
int spec_ioctl __P((void *));
int spec_select __P((void *));
#define spec_mmap spec_badop
int spec_fsync __P((void *));
#define spec_seek spec_badop
#define spec_remove spec_badop
#define spec_link spec_badop
#define spec_rename spec_badop
#define spec_mkdir spec_badop
#define spec_rmdir spec_badop
#define spec_symlink spec_badop
#define spec_readdir spec_badop
#define spec_readlink spec_badop
#define spec_abortop spec_badop
#define spec_inactive nullop
#define spec_reclaim nullop
int spec_lock __P((void *));
int spec_unlock __P((void *));
int spec_bmap __P((void *));
int spec_strategy __P((void *));
int spec_print __P((void *));
#define spec_islocked nullop
int spec_pathconf __P((void *));
int spec_advlock __P((void *));
#define spec_blkatoff spec_badop
#define spec_valloc spec_badop
#define spec_reallocblks spec_badop
#define spec_vfree spec_badop
#define spec_truncate nullop
#define spec_update nullop
#define spec_bwrite vn_bwrite
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