1a79b7128SAlfred Perlstein /*- 2a79b7128SAlfred Perlstein * Copyright (c) 2000 Alfred Perlstein <alfred@FreeBSD.org> 3a79b7128SAlfred Perlstein * All rights reserved. 4a79b7128SAlfred Perlstein * 5a79b7128SAlfred Perlstein * Redistribution and use in source and binary forms, with or without 6a79b7128SAlfred Perlstein * modification, are permitted provided that the following conditions 7a79b7128SAlfred Perlstein * are met: 8a79b7128SAlfred Perlstein * 1. Redistributions of source code must retain the above copyright 9a79b7128SAlfred Perlstein * notice, this list of conditions and the following disclaimer. 10a79b7128SAlfred Perlstein * 2. Redistributions in binary form must reproduce the above copyright 11a79b7128SAlfred Perlstein * notice, this list of conditions and the following disclaimer in the 12a79b7128SAlfred Perlstein * documentation and/or other materials provided with the distribution. 13a79b7128SAlfred Perlstein * 14a79b7128SAlfred Perlstein * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15a79b7128SAlfred Perlstein * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16a79b7128SAlfred Perlstein * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17a79b7128SAlfred Perlstein * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18a79b7128SAlfred Perlstein * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19a79b7128SAlfred Perlstein * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20a79b7128SAlfred Perlstein * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21a79b7128SAlfred Perlstein * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22a79b7128SAlfred Perlstein * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23a79b7128SAlfred Perlstein * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24a79b7128SAlfred Perlstein * SUCH DAMAGE. 25a79b7128SAlfred Perlstein * 26a79b7128SAlfred Perlstein * $FreeBSD$ 27a79b7128SAlfred Perlstein */ 28a79b7128SAlfred Perlstein 29a79b7128SAlfred Perlstein #define ACCEPT_FILTER_MOD 30a79b7128SAlfred Perlstein 31a79b7128SAlfred Perlstein #include <sys/param.h> 32a79b7128SAlfred Perlstein #include <sys/kernel.h> 33960ed29cSSeigo Tanimura #include <sys/sysctl.h> 34960ed29cSSeigo Tanimura #include <sys/signalvar.h> 35a79b7128SAlfred Perlstein #include <sys/socketvar.h> 36a79b7128SAlfred Perlstein 37a79b7128SAlfred Perlstein /* accept filter that holds a socket until data arrives */ 38a79b7128SAlfred Perlstein 39a79b7128SAlfred Perlstein static void sohasdata(struct socket *so, void *arg, int waitflag); 40a79b7128SAlfred Perlstein 41a79b7128SAlfred Perlstein static struct accept_filter accf_data_filter = { 42a79b7128SAlfred Perlstein "dataready", 43a79b7128SAlfred Perlstein sohasdata, 44a79b7128SAlfred Perlstein NULL, 45a79b7128SAlfred Perlstein NULL 46a79b7128SAlfred Perlstein }; 47a79b7128SAlfred Perlstein 48a79b7128SAlfred Perlstein static moduledata_t accf_data_mod = { 49a79b7128SAlfred Perlstein "accf_data", 50a79b7128SAlfred Perlstein accept_filt_generic_mod_event, 51a79b7128SAlfred Perlstein &accf_data_filter 52a79b7128SAlfred Perlstein }; 53a79b7128SAlfred Perlstein 54a79b7128SAlfred Perlstein DECLARE_MODULE(accf_data, accf_data_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE); 55a79b7128SAlfred Perlstein 56a79b7128SAlfred Perlstein static void 57a79b7128SAlfred Perlstein sohasdata(struct socket *so, void *arg, int waitflag) 58a79b7128SAlfred Perlstein { 59a79b7128SAlfred Perlstein 604cc20ab1SSeigo Tanimura if (!soreadable(so)) 61a79b7128SAlfred Perlstein return; 62a79b7128SAlfred Perlstein 63a79b7128SAlfred Perlstein so->so_upcall = NULL; 64a79b7128SAlfred Perlstein so->so_rcv.sb_flags &= ~SB_UPCALL; 654cc20ab1SSeigo Tanimura soisconnected_locked(so); 66a79b7128SAlfred Perlstein return; 67a79b7128SAlfred Perlstein } 68