[apple/xnu.git] / bsd / miscfs / volfs / volfs.h

/*
 * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. The rights granted to you under the License
 * may not be used to create, or enable the creation or redistribution of,
 * unlawful or unlicensed copies of an Apple operating system, or to
 * circumvent, violate, or enable the circumvention or violation of, any
 * terms of an Apple operating system software license agreement.
 * 
 * Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this file.
 * 
 * The 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, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
 */

#ifndef __VOLFS_VOLFS_H__
#define __VOLFS_VOLFS_H__

#include  <sys/appleapiopts.h>

#ifdef __APPLE_API_PRIVATE
struct volfs_mntdata
{
	struct vnode *volfs_rootvp;
};

/*
 * Volfs vnodes exist only for the root, which allows for the enumeration
 * of all volfs accessible filesystems, and for the filesystems which
 * volfs handles.
 */
#define VOLFS_ROOT	1	/* This volfs vnode represents root of volfs */
#define	VOLFS_FSNODE	2	/* This volfs vnode represents a file system */

struct volfs_vndata
{
	int		vnode_type;
	unsigned int	nodeID;	/* the dev entry of a file system */
	struct mount *	fs_mount;
	fsid_t	fs_fsid;
};

#define MAXVLFSNAMLEN	24	/* max length is really 10, pad to 24 since
				 * some of the math depends on VLFSDIRENTLEN
				 * being a power of 2 */
#define VLFSDIRENTLEN	(MAXVLFSNAMLEN + sizeof(u_int32_t) + sizeof(u_int16_t) + sizeof(u_int8_t) + sizeof(u_int8_t))

#define ROOT_DIRID	2

#define MAXPLCENTRIES 250
#define PLCHASHSIZE 128


#define VTOVL(VP) ((struct volfs_vndata *)((VP)->v_data))

#define PRINTIT kprintf


#endif /* __APPLE_API_PRIVATE */
#endif /* __VOLFS_VOLFS_H__ */
Commit	Line	Data
1c79356b	1	/*
5d5c5d0d A	2	* Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved.
5d5c5d0d A	3	*
8f6c56a5	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
8f6c56a5 A	6	* This file contains Original Code and/or Modifications of Original Code
	7	* as defined in and that are subject to the Apple Public Source License
	8	* Version 2.0 (the 'License'). You may not use this file except in
	9	* compliance with the License. The rights granted to you under the License
	10	* may not be used to create, or enable the creation or redistribution of,
	11	* unlawful or unlicensed copies of an Apple operating system, or to
	12	* circumvent, violate, or enable the circumvention or violation of, any
	13	* terms of an Apple operating system software license agreement.
	14	*
	15	* Please obtain a copy of the License at
	16	* http://www.opensource.apple.com/apsl/ and read it before using this file.
	17	*
	18	* The Original Code and all software distributed under the License are
	19	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
8ad349bb	24	* limitations under the License.
8f6c56a5 A	25	*
8f6c56a5 A	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b	27	*/
91447636	28
9bccf70c A	29	#ifndef __VOLFS_VOLFS_H__
9bccf70c A	30	#define __VOLFS_VOLFS_H__
1c79356b	31
9bccf70c A	32	#include <sys/appleapiopts.h>
	33
	34	#ifdef __APPLE_API_PRIVATE
1c79356b A	35	struct volfs_mntdata
	36	{
	37	struct vnode *volfs_rootvp;
1c79356b A	38	};
	39
	40	/*
	41	* Volfs vnodes exist only for the root, which allows for the enumeration
	42	* of all volfs accessible filesystems, and for the filesystems which
	43	* volfs handles.
	44	*/
	45	#define VOLFS_ROOT 1 /* This volfs vnode represents root of volfs */
	46	#define VOLFS_FSNODE 2 /* This volfs vnode represents a file system */
	47
	48	struct volfs_vndata
	49	{
	50	int vnode_type;
1c79356b A	51	unsigned int nodeID; /* the dev entry of a file system */
1c79356b A	52	struct mount * fs_mount;
91447636	53	fsid_t fs_fsid;
1c79356b A	54	};
	55
	56	#define MAXVLFSNAMLEN 24 /* max length is really 10, pad to 24 since
	57	* some of the math depends on VLFSDIRENTLEN
	58	* being a power of 2 */
	59	#define VLFSDIRENTLEN (MAXVLFSNAMLEN + sizeof(u_int32_t) + sizeof(u_int16_t) + sizeof(u_int8_t) + sizeof(u_int8_t))
	60
	61	#define ROOT_DIRID 2
	62
55e303ae A	63	#define MAXPLCENTRIES 250
	64	#define PLCHASHSIZE 128
	65
1c79356b A	66
	67	#define VTOVL(VP) ((struct volfs_vndata *)((VP)->v_data))
	68
	69	#define PRINTIT kprintf
	70
9bccf70c A	71
	72	#endif /* __APPLE_API_PRIVATE */
	73	#endif /* __VOLFS_VOLFS_H__ */