bbc4497ada
Define a parameter which indicates the maximum number of sockets in a system, and use this to size the zone allocators used for sockets and for certain PCBs. Convert PF_LOCAL PCB structures to be type-stable and add a version number. Define an external format for infomation about socket structures and use it in several places. Define a mechanism to get all PF_LOCAL and PF_INET PCB lists through sysctl(3) without blocking network interrupts for an unreasonable length of time. This probably still has some bugs and/or race conditions, but it seems to work well enough on my machines. It is now possible for `netstat' to get almost all of its information via the sysctl(3) interface rather than reading kmem (changes to follow).
80 lines
2.9 KiB
C
80 lines
2.9 KiB
C
/*-
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* Copyright (c) 1982, 1986, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)uipc_proto.c 8.1 (Berkeley) 6/10/93
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* $Id: uipc_proto.c,v 1.14 1998/02/20 13:11:48 bde Exp $
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*/
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#include <sys/param.h>
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#include <sys/kernel.h>
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#include <sys/domain.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <sys/un.h>
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#include <sys/unpcb.h>
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#include <net/raw_cb.h>
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/*
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* Definitions of protocols supported in the LOCAL domain.
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*/
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static struct protosw localsw[] = {
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{ SOCK_STREAM, &localdomain, 0, PR_CONNREQUIRED|PR_WANTRCVD|PR_RIGHTS,
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0, 0, 0, 0,
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0,
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0, 0, 0, 0,
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&uipc_usrreqs
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},
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{ SOCK_DGRAM, &localdomain, 0, PR_ATOMIC|PR_ADDR|PR_RIGHTS,
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0, 0, 0, 0,
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0,
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0, 0, 0, 0,
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&uipc_usrreqs
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},
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{ 0, 0, 0, 0,
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0, 0, raw_ctlinput, 0,
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0,
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raw_init, 0, 0, 0,
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&raw_usrreqs
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}
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};
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struct domain localdomain =
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{ AF_LOCAL, "local", unp_init, unp_externalize, unp_dispose,
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localsw, &localsw[sizeof(localsw)/sizeof(localsw[0])] };
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SYSCTL_NODE(_net, PF_LOCAL, local, CTLFLAG_RW, 0, "Local domain");
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SYSCTL_NODE(_net_local, SOCK_STREAM, stream, CTLFLAG_RW, 0, "SOCK_STREAM");
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SYSCTL_NODE(_net_local, SOCK_DGRAM, dgram, CTLFLAG_RW, 0, "SOCK_DGRAM");
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