[apple/xnu.git] / bsd / sys / conf.h

/*
 * Copyright (c) 2000-2012 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@
 */
/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
/*-
 * Copyright (c) 1990, 1993
 *	The Regents of the University of California.  All rights reserved.
 * (c) UNIX System Laboratories, Inc.
 * All or some portions of this file are derived from material licensed
 * to the University of California by American Telephone and Telegraph
 * Co. or Unix System Laboratories, Inc. and are reproduced herein with
 * the permission of UNIX System Laboratories, Inc.
 *
 * 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.
 *
 *	@(#)conf.h	8.5 (Berkeley) 1/9/95
 */

#ifndef _SYS_CONF_H_
#define _SYS_CONF_H_ 1

#include <sys/appleapiopts.h>
#include <sys/cdefs.h>
#include <sys/queue.h>
#include <stdint.h>

/*
 * Definitions of device driver entry switches
 */

struct buf;
struct proc;
struct tty;
struct uio;
struct vnode;

/*
 * Types for d_type.
 * These are returned by ioctl FIODTYPE
 */
#define	D_TAPE	1
#define	D_DISK	2
#define	D_TTY	3

#ifdef KERNEL
/* 
 * Device switch function types.
 */
typedef int  open_close_fcn_t(dev_t dev, int flags, int devtype,
				     struct proc *p);

typedef struct tty *d_devtotty_t(dev_t dev);

typedef	void strategy_fcn_t(struct buf *bp);
typedef int  ioctl_fcn_t(dev_t dev, u_long cmd, caddr_t data,
				     int fflag, struct proc *p);
typedef int  dump_fcn_t(void);     /* parameters vary by architecture */
typedef	int  psize_fcn_t(dev_t dev);
typedef int  read_write_fcn_t(dev_t dev, struct uio *uio, int ioflag);
typedef	int  stop_fcn_t(struct tty *tp, int rw);
typedef	int  reset_fcn_t(int uban);
typedef	int  select_fcn_t(dev_t dev, int which, void * wql, struct proc *p);
typedef	int  mmap_fcn_t(void);

#define	d_open_t	open_close_fcn_t
#define	d_close_t	open_close_fcn_t
#define	d_read_t	read_write_fcn_t
#define	d_write_t	read_write_fcn_t
#define	d_ioctl_t	ioctl_fcn_t
#define	d_stop_t	stop_fcn_t
#define	d_reset_t	reset_fcn_t
#define	d_select_t	select_fcn_t
#define	d_mmap_t	mmap_fcn_t
#define	d_strategy_t	strategy_fcn_t

__BEGIN_DECLS
int		enodev(void);		
void	enodev_strat(void);
__END_DECLS

/*
 * Versions of enodev() pointer, cast to appropriate function type. For use
 * in empty devsw slots.
 */
#define eno_opcl		((open_close_fcn_t *)&enodev)
#define eno_strat		((strategy_fcn_t *)&enodev_strat)
#define eno_ioctl		((ioctl_fcn_t *)&enodev)
#define eno_dump		((dump_fcn_t *)&enodev)
#define eno_psize		((psize_fcn_t *)&enodev)
#define eno_rdwrt		((read_write_fcn_t *)&enodev)
#define eno_stop		((stop_fcn_t *)&enodev)
#define eno_reset		((reset_fcn_t *)&enodev)
#define eno_mmap		((mmap_fcn_t *)&enodev)
#define eno_select		((select_fcn_t *)&enodev)

/* For source backward compatibility only! */
#define eno_getc		((void *)&enodev)
#define eno_putc		((void *)&enodev)

/*
 * Block device switch table
 */
struct bdevsw {
	open_close_fcn_t	*d_open;
	open_close_fcn_t	*d_close;
	strategy_fcn_t		*d_strategy;
	ioctl_fcn_t		*d_ioctl;
	dump_fcn_t		*d_dump;
	psize_fcn_t		*d_psize;
	int			d_type;
};


d_devtotty_t    nodevtotty;
d_write_t	nowrite;

#ifdef KERNEL_PRIVATE
extern struct bdevsw bdevsw[];
extern int (*bootcache_contains_block)(dev_t device, u_int64_t blkno);
#endif /* KERNEL_PRIVATE */

/*
 * Contents of empty bdevsw slot.
 */
#define	 NO_BDEVICE						\
	{ eno_opcl,	eno_opcl,	eno_strat, eno_ioctl,	\
	  eno_dump,	eno_psize,	0 	}
	  

/*
 * Character device switch table
 */
struct cdevsw {
	open_close_fcn_t	*d_open;
	open_close_fcn_t	*d_close;
	read_write_fcn_t	*d_read;
	read_write_fcn_t	*d_write;
	ioctl_fcn_t		*d_ioctl;
	stop_fcn_t		*d_stop;
	reset_fcn_t		*d_reset;
	struct	tty 		**d_ttys;
	select_fcn_t		*d_select;
	mmap_fcn_t		*d_mmap;
	strategy_fcn_t		*d_strategy;
	void			*d_reserved_1;
	void			*d_reserved_2;
	int			d_type;
};

#ifdef BSD_KERNEL_PRIVATE

extern uint64_t cdevsw_flags[];
#define CDEVSW_SELECT_KQUEUE	0x01
#define CDEVSW_USE_OFFSET	0x02

struct thread;

typedef struct devsw_lock {
	TAILQ_ENTRY(devsw_lock) 	dl_list;
	struct thread			*dl_thread;
	dev_t				dl_dev;
	int 				dl_mode;
} *devsw_lock_t;

#endif /* BSD_KERNEL_PRIVATE */


/*
 * Contents of empty cdevsw slot.
 */

#define	 NO_CDEVICE						 	 \
    {								  	\
	eno_opcl,	eno_opcl,	eno_rdwrt,	eno_rdwrt,	\
	eno_ioctl,	eno_stop,	eno_reset,	0,	  	\
	(select_fcn_t *)seltrue,	eno_mmap,	eno_strat,	eno_getc,	\
	eno_putc,	0 					  	\
    }
	
#endif /* KERNEL */
  
#ifdef  KERNEL_PRIVATE
typedef int  l_open_t (dev_t dev, struct tty *tp);
typedef int  l_close_t(struct tty *tp, int flags);
typedef int  l_read_t (struct tty *tp, struct uio *uio, int flag);
typedef int  l_write_t(struct tty *tp, struct uio *uio, int flag);
typedef int  l_ioctl_t(struct tty *tp, u_long cmd, caddr_t data, int flag,
		       struct proc *p);
typedef int  l_rint_t (int c, struct tty *tp);
typedef void l_start_t(struct tty *tp);
typedef int  l_modem_t(struct tty *tp, int flag);

/*
 * Line discipline switch table
 */
struct linesw {
	l_open_t	*l_open;
	l_close_t	*l_close;
	l_read_t	*l_read;
	l_write_t	*l_write;
	l_ioctl_t	*l_ioctl;
	l_rint_t	*l_rint;
	l_start_t	*l_start;
	l_modem_t	*l_modem;
};


extern struct linesw linesw[];
extern const int nlinesw;
 
int ldisc_register(int , struct linesw *);
void ldisc_deregister(int);
#define LDISC_LOAD      -1              /* Loadable line discipline */

#endif /* KERNEL_PRIVATE */

#ifdef BSD_KERNEL_PRIVATE
/*
 * Swap device table
 */
struct swdevt {
	dev_t	sw_dev;
	int	sw_flags;
	int	sw_nblks;
	struct	vnode *sw_vp;
};
#define	SW_FREED	0x01
#define	SW_SEQUENTIAL	0x02
#define	sw_freed	sw_flags	/* XXX compat */

extern struct swdevt swdevt[];

#endif /* BSD_KERNEL_PRIVATE */


#ifdef KERNEL
/*
 * ***_free finds free slot;
 * ***_add adds entries to the devsw table
 * If int arg is -1; finds a free slot
 * Returns the major number if successful
 *  else -1
 */
__BEGIN_DECLS
#ifdef KERNEL_PRIVATE
void devsw_init(void);
extern struct cdevsw cdevsw[];
extern int cdevsw_setkqueueok(int, struct cdevsw*, int);
#endif /* KERNEL_PRIVATE */

#ifdef BSD_KERNEL_PRIVATE
extern void devsw_lock(dev_t, int);
extern void devsw_unlock(dev_t, int);
#endif /* BSD_KERNEL_PRIVATE */

int  bdevsw_isfree(int);
int  bdevsw_add(int, struct bdevsw *);
int  bdevsw_remove(int, struct bdevsw *);
int  cdevsw_isfree(int);
int  cdevsw_add(int, struct cdevsw *);
int  cdevsw_add_with_bdev(int index, struct cdevsw * csw, int bdev);
int  cdevsw_remove(int, struct cdevsw *);
int  isdisk(dev_t, int);
__END_DECLS
#endif /* KERNEL */

#endif /* _SYS_CONF_H_ */
Commit	Line	Data
1c79356b	1	/*
316670eb	2	* Copyright (c) 2000-2012 Apple Computer, Inc. All rights reserved.
5d5c5d0d	3	*
2d21ac55	4	* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
1c79356b	5	*
2d21ac55 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.
8f6c56a5	14	*
2d21ac55 A	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
8f6c56a5 A	20	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
8f6c56a5 A	21	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
2d21ac55 A	22	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	23	* Please see the License for the specific language governing rights and
	24	* limitations under the License.
8f6c56a5	25	*
2d21ac55	26	* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
1c79356b A	27	*/
	28	/* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
	29	/*-
	30	* Copyright (c) 1990, 1993
	31	* The Regents of the University of California. All rights reserved.
	32	* (c) UNIX System Laboratories, Inc.
	33	* All or some portions of this file are derived from material licensed
	34	* to the University of California by American Telephone and Telegraph
	35	* Co. or Unix System Laboratories, Inc. and are reproduced herein with
	36	* the permission of UNIX System Laboratories, Inc.
	37	*
	38	* Redistribution and use in source and binary forms, with or without
	39	* modification, are permitted provided that the following conditions
	40	* are met:
	41	* 1. Redistributions of source code must retain the above copyright
	42	* notice, this list of conditions and the following disclaimer.
	43	* 2. Redistributions in binary form must reproduce the above copyright
	44	* notice, this list of conditions and the following disclaimer in the
	45	* documentation and/or other materials provided with the distribution.
	46	* 3. All advertising materials mentioning features or use of this software
	47	* must display the following acknowledgement:
	48	* This product includes software developed by the University of
	49	* California, Berkeley and its contributors.
	50	* 4. Neither the name of the University nor the names of its contributors
	51	* may be used to endorse or promote products derived from this software
	52	* without specific prior written permission.
	53	*
	54	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	55	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	56	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	57	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	58	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	59	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	60	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	61	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	62	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	63	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	64	* SUCH DAMAGE.
	65	*
	66	* @(#)conf.h 8.5 (Berkeley) 1/9/95
	67	*/
	68
	69	#ifndef _SYS_CONF_H_
	70	#define _SYS_CONF_H_ 1
	71
9bccf70c	72	#include <sys/appleapiopts.h>
55e303ae	73	#include <sys/cdefs.h>
6d2010ae A	74	#include <sys/queue.h>
6d2010ae A	75	#include <stdint.h>
9bccf70c	76
1c79356b A	77	/*
	78	* Definitions of device driver entry switches
	79	*/
	80
	81	struct buf;
	82	struct proc;
	83	struct tty;
	84	struct uio;
	85	struct vnode;
	86
91447636 A	87	/*
	88	* Types for d_type.
	89	* These are returned by ioctl FIODTYPE
	90	*/
	91	#define D_TAPE 1
	92	#define D_DISK 2
	93	#define D_TTY 3
	94
	95	#ifdef KERNEL
1c79356b A	96	/*
	97	* Device switch function types.
	98	*/
91447636 A	99	typedef int open_close_fcn_t(dev_t dev, int flags, int devtype,
	100	struct proc *p);
	101
	102	typedef struct tty *d_devtotty_t(dev_t dev);
	103
	104	typedef void strategy_fcn_t(struct buf *bp);
	105	typedef int ioctl_fcn_t(dev_t dev, u_long cmd, caddr_t data,
	106	int fflag, struct proc *p);
	107	typedef int dump_fcn_t(void); /* parameters vary by architecture */
	108	typedef int psize_fcn_t(dev_t dev);
	109	typedef int read_write_fcn_t(dev_t dev, struct uio *uio, int ioflag);
	110	typedef int stop_fcn_t(struct tty *tp, int rw);
	111	typedef int reset_fcn_t(int uban);
	112	typedef int select_fcn_t(dev_t dev, int which, void * wql, struct proc *p);
	113	typedef int mmap_fcn_t(void);
1c79356b A	114
	115	#define d_open_t open_close_fcn_t
	116	#define d_close_t open_close_fcn_t
	117	#define d_read_t read_write_fcn_t
	118	#define d_write_t read_write_fcn_t
	119	#define d_ioctl_t ioctl_fcn_t
55e303ae A	120	#define d_stop_t stop_fcn_t
	121	#define d_reset_t reset_fcn_t
	122	#define d_select_t select_fcn_t
	123	#define d_mmap_t mmap_fcn_t
	124	#define d_strategy_t strategy_fcn_t
1c79356b A	125
1c79356b A	126	__BEGIN_DECLS
91447636 A	127	int enodev(void);
91447636 A	128	void enodev_strat(void);
1c79356b A	129	__END_DECLS
	130
	131	/*
	132	* Versions of enodev() pointer, cast to appropriate function type. For use
	133	* in empty devsw slots.
	134	*/
	135	#define eno_opcl ((open_close_fcn_t *)&enodev)
	136	#define eno_strat ((strategy_fcn_t *)&enodev_strat)
	137	#define eno_ioctl ((ioctl_fcn_t *)&enodev)
	138	#define eno_dump ((dump_fcn_t *)&enodev)
	139	#define eno_psize ((psize_fcn_t *)&enodev)
	140	#define eno_rdwrt ((read_write_fcn_t *)&enodev)
	141	#define eno_stop ((stop_fcn_t *)&enodev)
	142	#define eno_reset ((reset_fcn_t *)&enodev)
	143	#define eno_mmap ((mmap_fcn_t *)&enodev)
1c79356b A	144	#define eno_select ((select_fcn_t *)&enodev)
1c79356b A	145
b0d623f7 A	146	/* For source backward compatibility only! */
	147	#define eno_getc ((void *)&enodev)
	148	#define eno_putc ((void *)&enodev)
1c79356b A	149
	150	/*
	151	* Block device switch table
	152	*/
	153	struct bdevsw {
	154	open_close_fcn_t *d_open;
	155	open_close_fcn_t *d_close;
	156	strategy_fcn_t *d_strategy;
	157	ioctl_fcn_t *d_ioctl;
	158	dump_fcn_t *d_dump;
	159	psize_fcn_t *d_psize;
	160	int d_type;
	161	};
	162
1c79356b A	163
	164	d_devtotty_t nodevtotty;
	165	d_write_t nowrite;
	166
91447636	167	#ifdef KERNEL_PRIVATE
1c79356b	168	extern struct bdevsw bdevsw[];
316670eb	169	extern int (*bootcache_contains_block)(dev_t device, u_int64_t blkno);
91447636	170	#endif /* KERNEL_PRIVATE */
1c79356b A	171
	172	/*
	173	* Contents of empty bdevsw slot.
	174	*/
	175	#define NO_BDEVICE \
	176	{ eno_opcl, eno_opcl, eno_strat, eno_ioctl, \
	177	eno_dump, eno_psize, 0 }
	178
1c79356b A	179
	180	/*
	181	* Character device switch table
	182	*/
	183	struct cdevsw {
	184	open_close_fcn_t *d_open;
	185	open_close_fcn_t *d_close;
	186	read_write_fcn_t *d_read;
	187	read_write_fcn_t *d_write;
b0d623f7 A	188	ioctl_fcn_t *d_ioctl;
	189	stop_fcn_t *d_stop;
	190	reset_fcn_t *d_reset;
1c79356b A	191	struct tty **d_ttys;
1c79356b A	192	select_fcn_t *d_select;
b0d623f7	193	mmap_fcn_t *d_mmap;
1c79356b	194	strategy_fcn_t *d_strategy;
b0d623f7 A	195	void *d_reserved_1;
	196	void *d_reserved_2;
	197	int d_type;
1c79356b A	198	};
1c79356b A	199
6d2010ae	200	#ifdef BSD_KERNEL_PRIVATE
6d2010ae A	201
	202	extern uint64_t cdevsw_flags[];
	203	#define CDEVSW_SELECT_KQUEUE 0x01
	204	#define CDEVSW_USE_OFFSET 0x02
	205
	206	struct thread;
	207
	208	typedef struct devsw_lock {
	209	TAILQ_ENTRY(devsw_lock) dl_list;
	210	struct thread *dl_thread;
	211	dev_t dl_dev;
	212	int dl_mode;
	213	} *devsw_lock_t;
	214
	215	#endif /* BSD_KERNEL_PRIVATE */
1c79356b	216
1c79356b A	217
	218	/*
	219	* Contents of empty cdevsw slot.
	220	*/
	221
	222	#define NO_CDEVICE \
	223	{ \
	224	eno_opcl, eno_opcl, eno_rdwrt, eno_rdwrt, \
	225	eno_ioctl, eno_stop, eno_reset, 0, \
55e303ae	226	(select_fcn_t *)seltrue, eno_mmap, eno_strat, eno_getc, \
1c79356b A	227	eno_putc, 0 \
1c79356b A	228	}
91447636	229
9bccf70c	230	#endif /* KERNEL */
91447636 A	231
	232	#ifdef KERNEL_PRIVATE
	233	typedef int l_open_t (dev_t dev, struct tty *tp);
	234	typedef int l_close_t(struct tty *tp, int flags);
	235	typedef int l_read_t (struct tty tp, struct uio uio, int flag);
	236	typedef int l_write_t(struct tty tp, struct uio uio, int flag);
	237	typedef int l_ioctl_t(struct tty *tp, u_long cmd, caddr_t data, int flag,
	238	struct proc *p);
	239	typedef int l_rint_t (int c, struct tty *tp);
	240	typedef void l_start_t(struct tty *tp);
	241	typedef int l_modem_t(struct tty *tp, int flag);
	242
1c79356b A	243	/*
	244	* Line discipline switch table
	245	*/
	246	struct linesw {
91447636 A	247	l_open_t *l_open;
	248	l_close_t *l_close;
	249	l_read_t *l_read;
	250	l_write_t *l_write;
	251	l_ioctl_t *l_ioctl;
	252	l_rint_t *l_rint;
	253	l_start_t *l_start;
	254	l_modem_t *l_modem;
1c79356b A	255	};
1c79356b A	256
9bccf70c	257
1c79356b	258	extern struct linesw linesw[];
fe8ab488	259	extern const int nlinesw;
1c79356b	260
91447636 A	261	int ldisc_register(int , struct linesw *);
91447636 A	262	void ldisc_deregister(int);
1c79356b	263	#define LDISC_LOAD -1 /* Loadable line discipline */
1c79356b	264
91447636	265	#endif /* KERNEL_PRIVATE */
9bccf70c	266
91447636	267	#ifdef BSD_KERNEL_PRIVATE
1c79356b A	268	/*
	269	* Swap device table
	270	*/
	271	struct swdevt {
	272	dev_t sw_dev;
	273	int sw_flags;
	274	int sw_nblks;
	275	struct vnode *sw_vp;
	276	};
	277	#define SW_FREED 0x01
	278	#define SW_SEQUENTIAL 0x02
	279	#define sw_freed sw_flags /* XXX compat */
	280
1c79356b	281	extern struct swdevt swdevt[];
9bccf70c	282
91447636	283	#endif /* BSD_KERNEL_PRIVATE */
9bccf70c	284
1c79356b A	285
	286	#ifdef KERNEL
	287	/*
	288	* ***_free finds free slot;
	289	* ***_add adds entries to the devsw table
	290	* If int arg is -1; finds a free slot
	291	* Returns the major number if successful
	292	* else -1
	293	*/
	294	__BEGIN_DECLS
6d2010ae	295	#ifdef KERNEL_PRIVATE
39037602	296	void devsw_init(void);
6d2010ae A	297	extern struct cdevsw cdevsw[];
	298	extern int cdevsw_setkqueueok(int, struct cdevsw*, int);
	299	#endif /* KERNEL_PRIVATE */
	300
	301	#ifdef BSD_KERNEL_PRIVATE
	302	extern void devsw_lock(dev_t, int);
	303	extern void devsw_unlock(dev_t, int);
	304	#endif /* BSD_KERNEL_PRIVATE */
	305
91447636 A	306	int bdevsw_isfree(int);
	307	int bdevsw_add(int, struct bdevsw *);
	308	int bdevsw_remove(int, struct bdevsw *);
	309	int cdevsw_isfree(int);
	310	int cdevsw_add(int, struct cdevsw *);
	311	int cdevsw_add_with_bdev(int index, struct cdevsw * csw, int bdev);
	312	int cdevsw_remove(int, struct cdevsw *);
b0d623f7	313	int isdisk(dev_t, int);
1c79356b	314	__END_DECLS
9bccf70c A	315	#endif /* KERNEL */
9bccf70c A	316
1c79356b	317	#endif /* _SYS_CONF_H_ */