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a79b71281c
accept filters are now loadable as well as able to be compiled into the kernel. two accept filters are provided, one that returns sockets when data arrives the other when an http request is completed (doesn't work with 0.9 requests) Reviewed by: jmg
81 lines
2.4 KiB
C
81 lines
2.4 KiB
C
/*-
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* Copyright (c) 2000 Alfred Perlstein <alfred@FreeBSD.org>
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $FreeBSD$
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*/
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#define ACCEPT_FILTER_MOD
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/sysproto.h>
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#include <sys/kernel.h>
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#include <sys/proc.h>
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#include <sys/malloc.h>
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#include <sys/unistd.h>
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#include <sys/file.h>
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#include <sys/fcntl.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/socketvar.h>
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#include <sys/stat.h>
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#include <sys/mbuf.h>
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#include <sys/resource.h>
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#include <sys/sysent.h>
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#include <sys/resourcevar.h>
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/* accept filter that holds a socket until data arrives */
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static void sohasdata(struct socket *so, void *arg, int waitflag);
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static struct accept_filter accf_data_filter = {
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"dataready",
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sohasdata,
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NULL,
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NULL
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};
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static moduledata_t accf_data_mod = {
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"accf_data",
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accept_filt_generic_mod_event,
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&accf_data_filter
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};
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DECLARE_MODULE(accf_data, accf_data_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
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static void
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sohasdata(struct socket *so, void *arg, int waitflag)
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{
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if (!soreadable(so)) {
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return;
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}
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so->so_upcall = NULL;
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so->so_rcv.sb_flags &= ~SB_UPCALL;
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soisconnected(so);
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return;
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}
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