960ed29c4b
Requested by: bde Since locking sigio_lock is usually followed by calling pgsigio(), move the declaration of sigio_lock and the definitions of SIGIO_*() to sys/signalvar.h. While I am here, sort include files alphabetically, where possible.
74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/*-
|
|
* Copyright (c) 2000 Alfred Perlstein <alfred@FreeBSD.org>
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#define ACCEPT_FILTER_MOD
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/sysctl.h>
|
|
#include <sys/signalvar.h>
|
|
#include <sys/socketvar.h>
|
|
#include <sys/sx.h>
|
|
|
|
/* accept filter that holds a socket until data arrives */
|
|
|
|
static void sohasdata(struct socket *so, void *arg, int waitflag);
|
|
|
|
static struct accept_filter accf_data_filter = {
|
|
"dataready",
|
|
sohasdata,
|
|
NULL,
|
|
NULL
|
|
};
|
|
|
|
static moduledata_t accf_data_mod = {
|
|
"accf_data",
|
|
accept_filt_generic_mod_event,
|
|
&accf_data_filter
|
|
};
|
|
|
|
DECLARE_MODULE(accf_data, accf_data_mod, SI_SUB_DRIVERS, SI_ORDER_MIDDLE);
|
|
|
|
static void
|
|
sohasdata(struct socket *so, void *arg, int waitflag)
|
|
{
|
|
|
|
SIGIO_SLOCK();
|
|
if (!soreadable(so)) {
|
|
SIGIO_SUNLOCK();
|
|
return;
|
|
}
|
|
|
|
so->so_upcall = NULL;
|
|
so->so_rcv.sb_flags &= ~SB_UPCALL;
|
|
soisconnected_locked(so);
|
|
SIGIO_SUNLOCK();
|
|
return;
|
|
}
|