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Text File | 1993-06-17 | 6.1 KB | 221 lines | [TEXT/UNIX] |
- /*
- * 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.
- *
- * @(#)specdev.h 7.4 (Berkeley) 4/19/91
- */
-
- /*
- * 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
-
- extern 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));
-