/* * Copyright (c) 1990 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. * * from: @(#)specdev.h 7.4 (Berkeley) 4/19/91 * $Id: specdev.h,v 1.2 1993/10/16 17:17:47 rgrimes Exp $ */ /* * 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. */ struct nameidata; struct ucred; struct flock; struct buf; struct uio; int spec_badop(), spec_ebadf(); int spec_lookup __P(( struct vnode *vp, struct nameidata *ndp, struct proc *p)); #define spec_create ((int (*) __P(( \ struct nameidata *ndp, \ struct vattr *vap, \ struct proc *p))) spec_badop) #define spec_mknod ((int (*) __P(( \ struct nameidata *ndp, \ struct vattr *vap, \ struct ucred *cred, \ struct proc *p))) spec_badop) int spec_open __P(( struct vnode *vp, int mode, struct ucred *cred, struct proc *p)); int spec_close __P(( struct vnode *vp, int fflag, struct ucred *cred, struct proc *p)); #define spec_access ((int (*) __P(( \ struct vnode *vp, \ int mode, \ struct ucred *cred, \ struct proc *p))) spec_ebadf) #define spec_getattr ((int (*) __P(( \ struct vnode *vp, \ struct vattr *vap, \ struct ucred *cred, \ struct proc *p))) spec_ebadf) #define spec_setattr ((int (*) __P(( \ struct vnode *vp, \ struct vattr *vap, \ struct ucred *cred, \ struct proc *p))) spec_ebadf) int spec_read __P(( struct vnode *vp, struct uio *uio, int ioflag, struct ucred *cred)); int spec_write __P(( struct vnode *vp, struct uio *uio, int ioflag, struct ucred *cred)); int spec_ioctl __P(( struct vnode *vp, int command, caddr_t data, int fflag, struct ucred *cred, struct proc *p)); int spec_select __P(( struct vnode *vp, int which, int fflags, struct ucred *cred, struct proc *p)); #define spec_mmap ((int (*) __P(( \ struct vnode *vp, \ int fflags, \ struct ucred *cred, \ struct proc *p))) spec_badop) #define spec_fsync ((int (*) __P(( \ struct vnode *vp, \ int fflags, \ struct ucred *cred, \ int waitfor, \ struct proc *p))) nullop) #define spec_seek ((int (*) __P(( \ struct vnode *vp, \ off_t oldoff, \ off_t newoff, \ struct ucred *cred))) spec_badop) #define spec_remove ((int (*) __P(( \ struct nameidata *ndp, \ struct proc *p))) spec_badop) #define spec_link ((int (*) __P(( \ struct vnode *vp, \ struct nameidata *ndp, \ struct proc *p))) spec_badop) #define spec_rename ((int (*) __P(( \ struct nameidata *fndp, \ struct nameidata *tdnp, \ struct proc *p))) spec_badop) #define spec_mkdir ((int (*) __P(( \ struct nameidata *ndp, \ struct vattr *vap, \ struct proc *p))) spec_badop) #define spec_rmdir ((int (*) __P(( \ struct nameidata *ndp, \ struct proc *p))) spec_badop) #define spec_symlink ((int (*) __P(( \ struct nameidata *ndp, \ struct vattr *vap, \ char *target, \ struct proc *p))) spec_badop) #define spec_readdir ((int (*) __P(( \ struct vnode *vp, \ struct uio *uio, \ struct ucred *cred, \ int *eofflagp))) spec_badop) #define spec_readlink ((int (*) __P(( \ struct vnode *vp, \ struct uio *uio, \ struct ucred *cred))) spec_badop) #define spec_abortop ((int (*) __P(( \ struct nameidata *ndp))) spec_badop) #define spec_inactive ((int (*) __P(( \ struct vnode *vp, \ struct proc *p))) nullop) #define spec_reclaim ((int (*) __P(( \ struct vnode *vp))) nullop) int spec_lock __P(( struct vnode *vp)); int spec_unlock __P(( struct vnode *vp)); int spec_bmap __P(( struct vnode *vp, daddr_t bn, struct vnode **vpp, daddr_t *bnp)); int spec_strategy __P(( struct buf *bp)); int spec_print __P(( struct vnode *vp)); #define spec_islocked ((int (*) __P(( \ struct vnode *vp))) nullop) int spec_advlock __P(( struct vnode *vp, caddr_t id, int op, struct flock *fl, int flags));