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

/*
 * Copyright (c) 2008-2010 Apple 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) 1982, 1986, 1989, 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.
 *
 *	@(#)unpcb.h	8.1 (Berkeley) 6/2/93
 */

#ifndef _SYS_UNPCB_H_
#define _SYS_UNPCB_H_

#include <sys/appleapiopts.h>
#include <sys/queue.h>
#include <sys/un.h>
#include <sys/ucred.h>

/*
 * Protocol control block for an active
 * instance of a UNIX internal protocol.
 *
 * A socket may be associated with an vnode in the
 * file system.  If so, the unp_vnode pointer holds
 * a reference count to this vnode, which should be irele'd
 * when the socket goes away.
 *
 * A socket may be connected to another socket, in which
 * case the control block of the socket to which it is connected
 * is given by unp_conn.
 *
 * A socket may be referenced by a number of sockets (e.g. several
 * sockets may be connected to a datagram socket.)  These sockets
 * are in a linked list starting with unp_refs, linked through
 * unp_nextref and null-terminated.  Note that a socket may be referenced
 * by a number of other sockets and may also reference a socket (not
 * necessarily one which is referencing it).  This generates
 * the need for unp_refs and unp_nextref to be separate fields.
 *
 * Stream sockets keep copies of receive sockbuf sb_cc and sb_mbcnt
 * so that changes in the sockbuf may be computed to modify
 * back pressure on the sender accordingly.
 */

typedef u_quad_t        unp_gen_t;

#if defined(__LP64__)
struct _unpcb_list_entry {
    u_int32_t   le_next; 
    u_int32_t   le_prev;
}; 
#define _UCPCB_LIST_HEAD(name, type)	\
struct name {				\
	u_int32_t	lh_first;	\
};
#define _UNPCB_LIST_ENTRY(x)		struct _unpcb_list_entry
#define _UNPCB_PTR(x)			u_int32_t
#else 
#define _UCPCB_LIST_HEAD(name, type)	LIST_HEAD(name, type)
#define _UNPCB_LIST_ENTRY(x)		LIST_ENTRY(x)
#define _UNPCB_PTR(x)			x
#endif

#ifdef PRIVATE
#ifndef KERNEL
_UCPCB_LIST_HEAD(unp_head, unpcb);
#else
LIST_HEAD(unp_head, unpcb);
#define sotounpcb(so)   ((struct unpcb *)((so)->so_pcb))

struct	unpcb {
	LIST_ENTRY(unpcb) unp_link;	/* glue on list of all PCBs */
	struct socket	*unp_socket;	/* pointer back to socket */
	struct vnode	*unp_vnode;	/* if associated with file */
	ino_t			unp_ino;	/* fake inode number */
	struct unpcb	*unp_conn;	/* control block of connected socket */
	struct unp_head	unp_refs;	/* referencing socket linked list */
	LIST_ENTRY(unpcb) unp_reflink;	/* link in unp_refs list */
	struct sockaddr_un *unp_addr;	/* bound address of socket */
	int		unp_cc;		/* copy of rcv.sb_cc */
	int		unp_mbcnt;	/* copy of rcv.sb_mbcnt */
	unp_gen_t	unp_gencnt;	/* generation count of this instance */
	int		unp_flags;	/* flags */
	struct xucred	unp_peercred;	/* peer credentials, if applicable */
	decl_lck_mtx_data( ,unp_mtx);	/* per unpcb lock */
	int		rw_thrcount;    /* disconnect should wait for this count to become zero */
};
#endif /* KERNEL */

/*
 * Flags in unp_flags.
 *
 * UNP_HAVEPC - indicates that the unp_peercred member is filled in
 * and is really the credentials of the connected peer.  This is used
 * to determine whether the contents should be sent to the user or
 * not.
 *
 * UNP_HAVEPCCACHED - indicates that the unp_peercred member is filled
 * in, but does *not* contain the credentials of the connected peer
 * (there may not even be a peer).  This is set in unp_listen() when
 * it fills in unp_peercred for later consumption by unp_connect().
 */
#define UNP_HAVEPC			0x0001
#define UNP_HAVEPCCACHED		0x0002
#define UNP_DONTDISCONNECT		0x0004
#define	UNP_TRACE_MDNS			0x1000

#ifdef KERNEL
struct  unpcb_compat {
#else /* KERNEL */
#define unpcb_compat unpcb
struct	unpcb {
#endif /* KERNEL */
	_UNPCB_LIST_ENTRY(unpcb_compat)	unp_link;	/* glue on list of all PCBs */
	_UNPCB_PTR(struct socket *)	unp_socket;	/* pointer back to socket */
	_UNPCB_PTR(struct vnode *)	unp_vnode;	/* if associated with file */
	ino_t				unp_ino;	/* fake inode number */
	_UNPCB_PTR(struct unpcb_compat *) unp_conn;	/* control block of connected socket */
#if defined(KERNEL)
	u_int32_t			unp_refs;
#else
	struct unp_head			unp_refs;	/* referencing socket linked list */
#endif
	_UNPCB_LIST_ENTRY(unpcb_compat) unp_reflink;	/* link in unp_refs list */
	_UNPCB_PTR(struct sockaddr_un *) unp_addr;	/* bound address of socket */
	int				unp_cc;		/* copy of rcv.sb_cc */
	int				unp_mbcnt;	/* copy of rcv.sb_mbcnt */
	unp_gen_t			unp_gencnt;	/* generation count of this instance */
};

/* Hack alert -- this structure depends on <sys/socketvar.h>. */
#ifdef  _SYS_SOCKETVAR_H_

#pragma pack(4)

struct  xunpcb {
	u_int32_t			xu_len;		/* length of this structure */
	_UNPCB_PTR(struct unpcb_compat *) xu_unpp;	/* to help netstat, fstat */
	struct unpcb_compat		xu_unp;		/* our information */
	union {
		struct sockaddr_un	xuu_addr;	/* our bound address */
		char			xu_dummy1[256];
	} xu_au;
#define xu_addr xu_au.xuu_addr
	union {
		struct sockaddr_un	xuu_caddr;	/* their bound address */
		char			xu_dummy2[256];
	} xu_cau;
#define xu_caddr xu_cau.xuu_caddr
	struct xsocket			xu_socket;
	u_quad_t			xu_alignment_hack;
};

#if !CONFIG_EMBEDDED

struct xunpcb64_list_entry {
    u_int64_t   le_next;
    u_int64_t   le_prev;
};

struct xunpcb64 {
	u_int32_t			xu_len;		/* length of this structure */
	u_int64_t			xu_unpp;	/* to help netstat, fstat */
	struct xunpcb64_list_entry	xunp_link;	/* glue on list of all PCBs */
	u_int64_t			xunp_socket;	/* pointer back to socket */
	u_int64_t			xunp_vnode;	/* if associated with file */
	u_int64_t			xunp_ino;	/* fake inode number */
	u_int64_t			xunp_conn;	/* control block of connected socket */
	u_int64_t			xunp_refs;	/* referencing socket linked list */
	struct xunpcb64_list_entry	xunp_reflink;	/* link in unp_refs list */
	int				xunp_cc;		/* copy of rcv.sb_cc */
	int				xunp_mbcnt;	/* copy of rcv.sb_mbcnt */
	unp_gen_t			xunp_gencnt;	/* generation count of this instance */
	int				xunp_flags;	/* flags */
        union {
                struct sockaddr_un      	xuu_addr;
                char                    	xu_dummy1[256];
        } 				xu_au;		/* our bound address */
#define xunp_addr xu_au.xuu_addr
        union {
                struct sockaddr_un      	xuu_caddr;
                char                    	xu_dummy2[256];
        }				xu_cau;		/* their bound address */
#define xunp_caddr xu_cau.xuu_caddr
	struct xsocket64	xu_socket;
};

#endif /* !CONFIG_EMBEDDED */

#pragma pack()

#endif /* _SYS_SOCKETVAR_H_ */

#endif /* PRIVATE */

struct	xunpgen {
	u_int32_t	xug_len;
	u_int		xug_count;
	unp_gen_t	xug_gen;
	so_gen_t	xug_sogen;
};

#endif /* _SYS_UNPCB_H_ */
Commit	Line	Data
1c79356b	1	/*
6d2010ae	2	* Copyright (c) 2008-2010 Apple 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	/*
	29	* Copyright (c) 1982, 1986, 1989, 1993
	30	* The Regents of the University of California. All rights reserved.
	31	*
	32	* Redistribution and use in source and binary forms, with or without
	33	* modification, are permitted provided that the following conditions
	34	* are met:
	35	* 1. Redistributions of source code must retain the above copyright
	36	* notice, this list of conditions and the following disclaimer.
	37	* 2. Redistributions in binary form must reproduce the above copyright
	38	* notice, this list of conditions and the following disclaimer in the
	39	* documentation and/or other materials provided with the distribution.
	40	* 3. All advertising materials mentioning features or use of this software
	41	* must display the following acknowledgement:
	42	* This product includes software developed by the University of
	43	* California, Berkeley and its contributors.
	44	* 4. Neither the name of the University nor the names of its contributors
	45	* may be used to endorse or promote products derived from this software
	46	* without specific prior written permission.
	47	*
	48	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	49	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	50	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	51	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	52	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	53	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	54	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	55	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	56	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	57	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	58	* SUCH DAMAGE.
	59	*
	60	* @(#)unpcb.h 8.1 (Berkeley) 6/2/93
	61	*/
	62
	63	#ifndef _SYS_UNPCB_H_
	64	#define _SYS_UNPCB_H_
	65
9bccf70c	66	#include <sys/appleapiopts.h>
1c79356b A	67	#include <sys/queue.h>
1c79356b A	68	#include <sys/un.h>
91447636	69	#include <sys/ucred.h>
1c79356b A	70
	71	/*
	72	* Protocol control block for an active
	73	* instance of a UNIX internal protocol.
	74	*
	75	* A socket may be associated with an vnode in the
	76	* file system. If so, the unp_vnode pointer holds
	77	* a reference count to this vnode, which should be irele'd
	78	* when the socket goes away.
	79	*
	80	* A socket may be connected to another socket, in which
	81	* case the control block of the socket to which it is connected
	82	* is given by unp_conn.
	83	*
	84	* A socket may be referenced by a number of sockets (e.g. several
	85	* sockets may be connected to a datagram socket.) These sockets
	86	* are in a linked list starting with unp_refs, linked through
	87	* unp_nextref and null-terminated. Note that a socket may be referenced
	88	* by a number of other sockets and may also reference a socket (not
	89	* necessarily one which is referencing it). This generates
	90	* the need for unp_refs and unp_nextref to be separate fields.
	91	*
	92	* Stream sockets keep copies of receive sockbuf sb_cc and sb_mbcnt
	93	* so that changes in the sockbuf may be computed to modify
	94	* back pressure on the sender accordingly.
	95	*/
91447636 A	96
	97	typedef u_quad_t unp_gen_t;
	98
2d21ac55 A	99	#if defined(__LP64__)
	100	struct _unpcb_list_entry {
	101	u_int32_t le_next;
	102	u_int32_t le_prev;
	103	};
	104	#define _UCPCB_LIST_HEAD(name, type) \
	105	struct name { \
	106	u_int32_t lh_first; \
	107	};
	108	#define _UNPCB_LIST_ENTRY(x) struct _unpcb_list_entry
	109	#define _UNPCB_PTR(x) u_int32_t
	110	#else
	111	#define _UCPCB_LIST_HEAD(name, type) LIST_HEAD(name, type)
	112	#define _UNPCB_LIST_ENTRY(x) LIST_ENTRY(x)
	113	#define _UNPCB_PTR(x) x
	114	#endif
	115
91447636	116	#ifdef PRIVATE
b0d623f7	117	#ifndef KERNEL
2d21ac55	118	_UCPCB_LIST_HEAD(unp_head, unpcb);
b0d623f7 A	119	#else
b0d623f7 A	120	LIST_HEAD(unp_head, unpcb);
91447636	121	#define sotounpcb(so) ((struct unpcb *)((so)->so_pcb))
1c79356b A	122
1c79356b A	123	struct unpcb {
2d21ac55 A	124	LIST_ENTRY(unpcb) unp_link; /* glue on list of all PCBs */
	125	struct socket unp_socket; / pointer back to socket */
	126	struct vnode unp_vnode; / if associated with file */
	127	ino_t unp_ino; /* fake inode number */
	128	struct unpcb unp_conn; / control block of connected socket */
	129	struct unp_head unp_refs; /* referencing socket linked list */
1c79356b	130	LIST_ENTRY(unpcb) unp_reflink; /* link in unp_refs list */
2d21ac55 A	131	struct sockaddr_un unp_addr; / bound address of socket */
	132	int unp_cc; /* copy of rcv.sb_cc */
	133	int unp_mbcnt; /* copy of rcv.sb_mbcnt */
	134	unp_gen_t unp_gencnt; /* generation count of this instance */
	135	int unp_flags; /* flags */
	136	struct xucred unp_peercred; /* peer credentials, if applicable */
6d2010ae	137	decl_lck_mtx_data( ,unp_mtx); /* per unpcb lock */
b0d623f7	138	int rw_thrcount; /* disconnect should wait for this count to become zero */
1c79356b	139	};
91447636	140	#endif /* KERNEL */
1c79356b	141
91447636 A	142	/*
	143	* Flags in unp_flags.
	144	*
	145	* UNP_HAVEPC - indicates that the unp_peercred member is filled in
	146	* and is really the credentials of the connected peer. This is used
	147	* to determine whether the contents should be sent to the user or
	148	* not.
	149	*
	150	* UNP_HAVEPCCACHED - indicates that the unp_peercred member is filled
	151	* in, but does not contain the credentials of the connected peer
	152	* (there may not even be a peer). This is set in unp_listen() when
	153	* it fills in unp_peercred for later consumption by unp_connect().
	154	*/
b0d623f7 A	155	#define UNP_HAVEPC 0x0001
	156	#define UNP_HAVEPCCACHED 0x0002
	157	#define UNP_DONTDISCONNECT 0x0004
6d2010ae	158	#define UNP_TRACE_MDNS 0x1000
91447636 A	159
	160	#ifdef KERNEL
	161	struct unpcb_compat {
	162	#else /* KERNEL */
	163	#define unpcb_compat unpcb
	164	struct unpcb {
	165	#endif /* KERNEL */
2d21ac55 A	166	_UNPCB_LIST_ENTRY(unpcb_compat) unp_link; /* glue on list of all PCBs */
	167	_UNPCB_PTR(struct socket ) unp_socket; / pointer back to socket */
	168	_UNPCB_PTR(struct vnode ) unp_vnode; / if associated with file */
	169	ino_t unp_ino; /* fake inode number */
	170	_UNPCB_PTR(struct unpcb_compat ) unp_conn; / control block of connected socket */
b0d623f7 A	171	#if defined(KERNEL)
	172	u_int32_t unp_refs;
	173	#else
2d21ac55	174	struct unp_head unp_refs; /* referencing socket linked list */
b0d623f7	175	#endif
2d21ac55 A	176	_UNPCB_LIST_ENTRY(unpcb_compat) unp_reflink; /* link in unp_refs list */
	177	_UNPCB_PTR(struct sockaddr_un ) unp_addr; / bound address of socket */
	178	int unp_cc; /* copy of rcv.sb_cc */
	179	int unp_mbcnt; /* copy of rcv.sb_mbcnt */
	180	unp_gen_t unp_gencnt; /* generation count of this instance */
91447636	181	};
1c79356b A	182
1c79356b A	183	/* Hack alert -- this structure depends on <sys/socketvar.h>. */
91447636	184	#ifdef _SYS_SOCKETVAR_H_
2d21ac55 A	185
	186	#pragma pack(4)
	187
91447636	188	struct xunpcb {
2d21ac55 A	189	u_int32_t xu_len; /* length of this structure */
	190	_UNPCB_PTR(struct unpcb_compat ) xu_unpp; / to help netstat, fstat */
	191	struct unpcb_compat xu_unp; /* our information */
	192	union {
	193	struct sockaddr_un xuu_addr; /* our bound address */
	194	char xu_dummy1[256];
	195	} xu_au;
91447636	196	#define xu_addr xu_au.xuu_addr
2d21ac55 A	197	union {
	198	struct sockaddr_un xuu_caddr; /* their bound address */
	199	char xu_dummy2[256];
	200	} xu_cau;
91447636	201	#define xu_caddr xu_cau.xuu_caddr
2d21ac55 A	202	struct xsocket xu_socket;
2d21ac55 A	203	u_quad_t xu_alignment_hack;
1c79356b	204	};
2d21ac55	205
b0d623f7 A	206	#if !CONFIG_EMBEDDED
	207
	208	struct xunpcb64_list_entry {
	209	u_int64_t le_next;
	210	u_int64_t le_prev;
	211	};
	212
	213	struct xunpcb64 {
	214	u_int32_t xu_len; /* length of this structure */
	215	u_int64_t xu_unpp; /* to help netstat, fstat */
	216	struct xunpcb64_list_entry xunp_link; /* glue on list of all PCBs */
	217	u_int64_t xunp_socket; /* pointer back to socket */
	218	u_int64_t xunp_vnode; /* if associated with file */
	219	u_int64_t xunp_ino; /* fake inode number */
	220	u_int64_t xunp_conn; /* control block of connected socket */
	221	u_int64_t xunp_refs; /* referencing socket linked list */
	222	struct xunpcb64_list_entry xunp_reflink; /* link in unp_refs list */
	223	int xunp_cc; /* copy of rcv.sb_cc */
	224	int xunp_mbcnt; /* copy of rcv.sb_mbcnt */
	225	unp_gen_t xunp_gencnt; /* generation count of this instance */
	226	int xunp_flags; /* flags */
	227	union {
	228	struct sockaddr_un xuu_addr;
	229	char xu_dummy1[256];
	230	} xu_au; /* our bound address */
	231	#define xunp_addr xu_au.xuu_addr
	232	union {
	233	struct sockaddr_un xuu_caddr;
	234	char xu_dummy2[256];
	235	} xu_cau; /* their bound address */
	236	#define xunp_caddr xu_cau.xuu_caddr
	237	struct xsocket64 xu_socket;
	238	};
	239
	240	#endif /* !CONFIG_EMBEDDED */
	241
2d21ac55 A	242	#pragma pack()
2d21ac55 A	243
91447636	244	#endif /* _SYS_SOCKETVAR_H_ */
b0d623f7	245
91447636	246	#endif /* PRIVATE */
1c79356b A	247
1c79356b A	248	struct xunpgen {
2d21ac55 A	249	u_int32_t xug_len;
	250	u_int xug_count;
	251	unp_gen_t xug_gen;
	252	so_gen_t xug_sogen;
1c79356b	253	};
1c79356b A	254
1c79356b A	255	#endif /* _SYS_UNPCB_H_ */