[apple/xnu.git] / bsd / miscfs / specfs / specdev.h

/*
 * Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * The contents of this file constitute Original Code as defined in and
 * are subject to the Apple Public Source License Version 1.1 (the
 * "License").  You may not use this file except in compliance with the
 * License.  Please obtain a copy of the License at
 * http://www.apple.com/publicsource and read it before using this file.
 * 
 * This Original Code and all software distributed under the License are
 * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
 * License for the specific language governing rights and limitations
 * under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * Copyright (c) 1995, 1998 Apple Computer, Inc. All Rights Reserved.
 * 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	8.6 (Berkeley) 5/21/95
 */

#ifndef _MISCFS_SPECFS_SPECDEV_H_
#define _MISCFS_SPECFS_SPECDEV_H_

#include  <sys/appleapiopts.h>

#ifdef __APPLE_API_PRIVATE
#include <vfs/vfs_support.h>

/*
 * 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;
	daddr_t si_size;                  /* block device size in bytes */
};
/*
 * 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
#define v_specsize v_specinfo->si_size

/*
 * 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.
 */
extern	int (**spec_vnodeop_p)(void *);
struct	nameidata;
struct	componentname;
struct	ucred;
struct	flock;
struct	buf;
struct	uio;

int	spec_ebadf();

int	spec_lookup __P((struct vop_lookup_args *));
#define spec_create ((int (*) __P((struct  vop_access_args *)))err_create)
#define spec_mknod ((int (*) __P((struct  vop_access_args *)))err_mknod)
int	spec_open __P((struct vop_open_args *));
int	spec_close __P((struct vop_close_args *));
#define spec_access ((int (*) __P((struct  vop_access_args *)))spec_ebadf)
#define spec_getattr ((int (*) __P((struct  vop_getattr_args *)))spec_ebadf)
#define spec_setattr ((int (*) __P((struct  vop_setattr_args *)))spec_ebadf)
int	spec_read __P((struct vop_read_args *));
int	spec_write __P((struct vop_write_args *));
#define spec_lease_check ((int (*) __P((struct  vop_access_args *)))nop_lease)
int	spec_ioctl __P((struct vop_ioctl_args *));
int	spec_select __P((struct vop_select_args *));
#define spec_revoke ((int (*) __P((struct  vop_access_args *)))nop_revoke)
#define spec_mmap ((int (*) __P((struct  vop_access_args *)))err_mmap)
int	spec_fsync __P((struct  vop_fsync_args *));
#define spec_seek ((int (*) __P((struct  vop_access_args *)))err_seek)
#define spec_remove ((int (*) __P((struct  vop_access_args *)))err_remove)
#define spec_link ((int (*) __P((struct  vop_access_args *)))err_link)
#define spec_rename ((int (*) __P((struct  vop_access_args *)))err_rename)
#define spec_mkdir ((int (*) __P((struct  vop_access_args *)))err_mkdir)
#define spec_rmdir ((int (*) __P((struct  vop_access_args *)))err_rmdir)
#define spec_symlink ((int (*) __P((struct  vop_access_args *)))err_symlink)
#define spec_readdir ((int (*) __P((struct  vop_access_args *)))err_readdir)
#define spec_readlink ((int (*) __P((struct  vop_access_args *)))err_readlink)
#define spec_abortop ((int (*) __P((struct  vop_access_args *)))err_abortop)
#define spec_inactive ((int (*) __P((struct  vop_access_args *)))nop_inactive)
#define spec_reclaim ((int (*) __P((struct  vop_access_args *)))nop_reclaim)
#define spec_lock ((int (*) __P((struct  vop_access_args *)))nop_lock)
#define spec_unlock ((int (*) __P((struct  vop_access_args *)))nop_unlock)
int	spec_bmap __P((struct vop_bmap_args *));
int	spec_strategy __P((struct vop_strategy_args *));
int	spec_print __P((struct vop_print_args *));
#define spec_islocked ((int (*) __P((struct  vop_access_args *)))nop_islocked)
int	spec_pathconf __P((struct vop_pathconf_args *));
#define spec_advlock ((int (*) __P((struct  vop_access_args *)))err_advlock)
#define spec_blkatoff ((int (*) __P((struct  vop_access_args *)))err_blkatoff)
#define spec_valloc ((int (*) __P((struct  vop_access_args *)))err_valloc)
#define spec_vfree ((int (*) __P((struct  vop_access_args *)))err_vfree)
#define spec_truncate ((int (*) __P((struct  vop_access_args *)))nop_truncate)
#define spec_update ((int (*) __P((struct  vop_access_args *)))nop_update)
#define spec_reallocblks \
	((int (*) __P((struct  vop_reallocblks_args *)))err_reallocblks)
#define spec_bwrite ((int (*) __P((struct  vop_bwrite_args *)))nop_bwrite)
int     spec_devblocksize __P((struct vop_devblocksize_args *));
int spec_blktooff __P((struct  vop_blktooff_args *));
int spec_offtoblk __P((struct  vop_offtoblk_args *));
int spec_cmap __P((struct  vop_cmap_args *));

#endif /* __APPLE_API_PRIVATE */
#endif /* _MISCFS_SPECFS_SPECDEV_H_ */
Commit	Line	Data
1c79356b	1	/*
9bccf70c	2	* Copyright (c) 2000-2002 Apple Computer, Inc. All rights reserved.
1c79356b A	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
	6	* The contents of this file constitute Original Code as defined in and
	7	* are subject to the Apple Public Source License Version 1.1 (the
	8	* "License"). You may not use this file except in compliance with the
	9	* License. Please obtain a copy of the License at
	10	* http://www.apple.com/publicsource and read it before using this file.
	11	*
	12	* This Original Code and all software distributed under the License are
	13	* distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	14	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	15	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	17	* License for the specific language governing rights and limitations
	18	* under the License.
	19	*
	20	* @APPLE_LICENSE_HEADER_END@
	21	*/
	22	/*
	23	* Copyright (c) 1995, 1998 Apple Computer, Inc. All Rights Reserved.
	24	* Copyright (c) 1990, 1993
	25	* The Regents of the University of California. All rights reserved.
	26	*
	27	* Redistribution and use in source and binary forms, with or without
	28	* modification, are permitted provided that the following conditions
	29	* are met:
	30	* 1. Redistributions of source code must retain the above copyright
	31	* notice, this list of conditions and the following disclaimer.
	32	* 2. Redistributions in binary form must reproduce the above copyright
	33	* notice, this list of conditions and the following disclaimer in the
	34	* documentation and/or other materials provided with the distribution.
	35	* 3. All advertising materials mentioning features or use of this software
	36	* must display the following acknowledgement:
	37	* This product includes software developed by the University of
	38	* California, Berkeley and its contributors.
	39	* 4. Neither the name of the University nor the names of its contributors
	40	* may be used to endorse or promote products derived from this software
	41	* without specific prior written permission.
	42	*
	43	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	44	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	45	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	46	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	47	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	48	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	49	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	50	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	51	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	52	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	53	* SUCH DAMAGE.
	54	*
	55	* @(#)specdev.h 8.6 (Berkeley) 5/21/95
	56	*/
	57
	58	#ifndef _MISCFS_SPECFS_SPECDEV_H_
	59	#define _MISCFS_SPECFS_SPECDEV_H_
	60
9bccf70c A	61	#include <sys/appleapiopts.h>
	62
	63	#ifdef __APPLE_API_PRIVATE
1c79356b A	64	#include <vfs/vfs_support.h>
	65
	66	/*
	67	* This structure defines the information maintained about
	68	* special devices. It is allocated in checkalias and freed
	69	* in vgone.
	70	*/
	71	struct specinfo {
	72	struct vnode **si_hashchain;
	73	struct vnode *si_specnext;
	74	long si_flags;
	75	dev_t si_rdev;
	76	daddr_t si_size; /* block device size in bytes */
	77	};
	78	/*
	79	* Exported shorthand
	80	*/
	81	#define v_rdev v_specinfo->si_rdev
	82	#define v_hashchain v_specinfo->si_hashchain
	83	#define v_specnext v_specinfo->si_specnext
	84	#define v_specflags v_specinfo->si_flags
	85	#define v_specsize v_specinfo->si_size
	86
	87	/*
	88	* Flags for specinfo
	89	*/
	90	#define SI_MOUNTEDON 0x0001 /* block special device is mounted on */
	91
	92	/*
	93	* Special device management
	94	*/
	95	#define SPECHSZ 64
	96	#if ((SPECHSZ&(SPECHSZ-1)) == 0)
	97	#define SPECHASH(rdev) (((rdev>>5)+(rdev))&(SPECHSZ-1))
	98	#else
	99	#define SPECHASH(rdev) (((unsigned)((rdev>>5)+(rdev)))%SPECHSZ)
	100	#endif
	101
	102	extern struct vnode *speclisth[SPECHSZ];
	103
	104	/*
	105	* Prototypes for special file operations on vnodes.
	106	*/
	107	extern int (*spec_vnodeop_p)(void );
	108	struct nameidata;
	109	struct componentname;
	110	struct ucred;
	111	struct flock;
	112	struct buf;
	113	struct uio;
	114
	115	int spec_ebadf();
	116
	117	int spec_lookup __P((struct vop_lookup_args *));
	118	#define spec_create ((int () __P((struct vop_access_args )))err_create)
	119	#define spec_mknod ((int () __P((struct vop_access_args )))err_mknod)
	120	int spec_open __P((struct vop_open_args *));
	121	int spec_close __P((struct vop_close_args *));
	122	#define spec_access ((int () __P((struct vop_access_args )))spec_ebadf)
	123	#define spec_getattr ((int () __P((struct vop_getattr_args )))spec_ebadf)
	124	#define spec_setattr ((int () __P((struct vop_setattr_args )))spec_ebadf)
	125	int spec_read __P((struct vop_read_args *));
	126	int spec_write __P((struct vop_write_args *));
	127	#define spec_lease_check ((int () __P((struct vop_access_args )))nop_lease)
128	int spec_ioctl __P((struct vop_ioctl_args *));
129	int spec_select __P((struct vop_select_args *));
130	#define spec_revoke ((int () __P((struct vop_access_args )))nop_revoke)
131	#define spec_mmap ((int () __P((struct vop_access_args )))err_mmap)
132	int spec_fsync __P((struct vop_fsync_args *));
133	#define spec_seek ((int () __P((struct vop_access_args )))err_seek)
134	#define spec_remove ((int () __P((struct vop_access_args )))err_remove)
135	#define spec_link ((int () __P((struct vop_access_args )))err_link)
136	#define spec_rename ((int () __P((struct vop_access_args )))err_rename)
137	#define spec_mkdir ((int () __P((struct vop_access_args )))err_mkdir)
138	#define spec_rmdir ((int () __P((struct vop_access_args )))err_rmdir)
139	#define spec_symlink ((int () __P((struct vop_access_args )))err_symlink)
140	#define spec_readdir ((int () __P((struct vop_access_args )))err_readdir)
141	#define spec_readlink ((int () __P((struct vop_access_args )))err_readlink)
142	#define spec_abortop ((int () __P((struct vop_access_args )))err_abortop)
143	#define spec_inactive ((int () __P((struct vop_access_args )))nop_inactive)
144	#define spec_reclaim ((int () __P((struct vop_access_args )))nop_reclaim)
145	#define spec_lock ((int () __P((struct vop_access_args )))nop_lock)
146	#define spec_unlock ((int () __P((struct vop_access_args )))nop_unlock)
147	int spec_bmap __P((struct vop_bmap_args *));
148	int spec_strategy __P((struct vop_strategy_args *));
149	int spec_print __P((struct vop_print_args *));
150	#define spec_islocked ((int () __P((struct vop_access_args )))nop_islocked)
151	int spec_pathconf __P((struct vop_pathconf_args *));
152	#define spec_advlock ((int () __P((struct vop_access_args )))err_advlock)
153	#define spec_blkatoff ((int () __P((struct vop_access_args )))err_blkatoff)
154	#define spec_valloc ((int () __P((struct vop_access_args )))err_valloc)
155	#define spec_vfree ((int () __P((struct vop_access_args )))err_vfree)
156	#define spec_truncate ((int () __P((struct vop_access_args )))nop_truncate)
157	#define spec_update ((int () __P((struct vop_access_args )))nop_update)
158	#define spec_reallocblks \
159	((int () __P((struct vop_reallocblks_args )))err_reallocblks)
160	#define spec_bwrite ((int () __P((struct vop_bwrite_args )))nop_bwrite)
161	int spec_devblocksize __P((struct vop_devblocksize_args *));
162	int spec_blktooff __P((struct vop_blktooff_args *));
163	int spec_offtoblk __P((struct vop_offtoblk_args *));
164	int spec_cmap __P((struct vop_cmap_args *));
165
9bccf70c	166	#endif /* __APPLE_API_PRIVATE */
1c79356b	167	#endif /* _MISCFS_SPECFS_SPECDEV_H_ */