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specdev.h revision 1.20.2.5 
      1 /*	$NetBSD: specdev.h,v 1.20.2.5 2001/10/01 12:47:24 fvdl Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *	This product includes software developed by the University of
     18  *	California, Berkeley and its contributors.
     19  * 4. Neither the name of the University nor the names of its contributors
     20  *    may be used to endorse or promote products derived from this software
     21  *    without specific prior written permission.
     22  *
     23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     33  * SUCH DAMAGE.
     34  *
     35  *	@(#)specdev.h	8.6 (Berkeley) 5/21/95
     36  */
     37 
     38 /*
     39  * Special device management
     40  */
     41 #define	SPECHSZ	64
     42 #if	((SPECHSZ&(SPECHSZ-1)) == 0)
     43 #define	SPECHASH(rdev)	(((rdev>>5)+(rdev))&(SPECHSZ-1))
     44 #else
     45 #define	SPECHASH(rdev)	(((unsigned)((rdev>>5)+(rdev)))%SPECHSZ)
     46 #endif
     47 
     48 struct vnode *speclisth[SPECHSZ];
     49 
     50 /*
     51  * Prototypes for special file operations on vnodes.
     52  */
     53 extern	int (**spec_vnodeop_p) __P((void *));
     54 struct	nameidata;
     55 struct	componentname;
     56 struct	ucred;
     57 struct	flock;
     58 struct	buf;
     59 struct	uio;
     60 
     61 int	spec_lookup	(void *);
     62 #define	spec_create	genfs_badop
     63 #define	spec_mknod	genfs_badop
     64 int	spec_open	(void *);
     65 int	spec_close	(void *);
     66 int	spec_access	(void *);
     67 int	spec_getattr	(void *);
     68 #define	spec_setattr	genfs_ebadf		/* XXX allow for clones? */
     69 int	spec_read	(void *);
     70 int	spec_write	(void *);
     71 #define	spec_lease_check genfs_nullop
     72 #define spec_fcntl	genfs_fcntl
     73 int	spec_ioctl	(void *);
     74 int	spec_poll	(void *);
     75 #define spec_revoke	genfs_revoke
     76 #define	spec_mmap	genfs_mmap
     77 int	spec_fsync	(void *);
     78 #define	spec_seek	genfs_nullop		/* XXX should query device */
     79 #define	spec_remove	genfs_badop
     80 #define	spec_link	genfs_badop
     81 #define	spec_rename	genfs_badop
     82 #define	spec_mkdir	genfs_badop
     83 #define	spec_rmdir	genfs_badop
     84 #define	spec_symlink	genfs_badop
     85 #define	spec_readdir	genfs_badop
     86 #define	spec_readlink	genfs_badop
     87 #define	spec_abortop	genfs_badop
     88 #define	spec_reclaim	genfs_nullop
     89 int	spec_inactive	(void *);
     90 int	spec_lock	(void *);
     91 int	spec_unlock	(void *);
     92 int	spec_bmap	(void *);
     93 int	spec_strategy	(void *);
     94 int	spec_print	(void *);
     95 int	spec_islocked	(void *);
     96 int	spec_pathconf	(void *);
     97 int	spec_advlock	(void *);
     98 #define	spec_blkatoff	genfs_badop
     99 #define	spec_valloc	genfs_badop
    100 #define	spec_reallocblks genfs_badop
    101 #define	spec_vfree	genfs_badop
    102 #define	spec_truncate	genfs_nullop
    103 #define	spec_update	genfs_nullop
    104 #define	spec_bwrite	vn_bwrite
    105 #define	spec_getpages	genfs_getpages
    106 #define	spec_putpages	genfs_putpages
    107