e0cc03a09b
kqueue provides a stateful and efficient event notification framework currently supported events include socket, file, directory, fifo, pipe, tty and device changes, and monitoring of processes and signals kqueue is supported by all writable filesystems in NetBSD tree (with exception of Coda) and all device drivers supporting poll(2) based on work done by Jonathan Lemon for FreeBSD initial NetBSD port done by Luke Mewburn and Jason Thorpe
149 lines
3.8 KiB
C
149 lines
3.8 KiB
C
/* $NetBSD: sysmon.c,v 1.7 2002/10/23 09:13:57 jdolecek Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 2000 Zembu Labs, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* Author: Jason R. Thorpe <thorpej@zembu.com>
|
|
*
|
|
* 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 Zembu Labs, Inc.
|
|
* 4. Neither the name of Zembu Labs nor the names of its employees may
|
|
* be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY ZEMBU LABS, INC. ``AS IS'' AND ANY EXPRESS
|
|
* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WAR-
|
|
* RANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DIS-
|
|
* CLAIMED. IN NO EVENT SHALL ZEMBU LABS 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.
|
|
*/
|
|
|
|
/*
|
|
* Clearing house for system monitoring hardware. We currently
|
|
* handle environmental sensors and watchdog timers.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
__KERNEL_RCSID(0, "$NetBSD: sysmon.c,v 1.7 2002/10/23 09:13:57 jdolecek Exp $");
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/conf.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/fcntl.h>
|
|
#include <sys/lock.h>
|
|
#include <sys/callout.h>
|
|
#include <sys/kernel.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/proc.h>
|
|
|
|
#include <dev/sysmon/sysmonvar.h>
|
|
#include <dev/sysmon/sysmonconf.h>
|
|
|
|
dev_type_open(sysmonopen);
|
|
dev_type_close(sysmonclose);
|
|
dev_type_ioctl(sysmonioctl);
|
|
|
|
const struct cdevsw sysmon_cdevsw = {
|
|
sysmonopen, sysmonclose, noread, nowrite, sysmonioctl,
|
|
nostop, notty, nopoll, nommap, nokqfilter,
|
|
};
|
|
|
|
/*
|
|
* sysmonopen:
|
|
*
|
|
* Open the system monitor device.
|
|
*/
|
|
int
|
|
sysmonopen(dev_t dev, int flag, int mode, struct proc *p)
|
|
{
|
|
int error;
|
|
|
|
switch (minor(dev)) {
|
|
#if NSYSMON_ENVSYS > 0
|
|
case SYSMON_MINOR_ENVSYS:
|
|
error = sysmonopen_envsys(dev, flag, mode, p);
|
|
break;
|
|
#endif
|
|
#if NSYSMON_WDOG > 0
|
|
case SYSMON_MINOR_WDOG:
|
|
error = sysmonopen_wdog(dev, flag, mode, p);
|
|
break;
|
|
#endif
|
|
default:
|
|
error = ENODEV;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* sysmonclose:
|
|
*
|
|
* Close the system monitor device.
|
|
*/
|
|
int
|
|
sysmonclose(dev_t dev, int flag, int mode, struct proc *p)
|
|
{
|
|
int error;
|
|
|
|
switch (minor(dev)) {
|
|
#if NSYSMON_ENVSYS > 0
|
|
case SYSMON_MINOR_ENVSYS:
|
|
error = sysmonclose_envsys(dev, flag, mode, p);
|
|
break;
|
|
#endif
|
|
#if NSYSMON_WDOG > 0
|
|
case SYSMON_MINOR_WDOG:
|
|
error = sysmonclose_wdog(dev, flag, mode, p);
|
|
break;
|
|
#endif
|
|
default:
|
|
error = ENODEV;
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
/*
|
|
* sysmonioctl:
|
|
*
|
|
* Perform a control request.
|
|
*/
|
|
int
|
|
sysmonioctl(dev_t dev, u_long cmd, caddr_t data, int flag, struct proc *p)
|
|
{
|
|
int error;
|
|
|
|
switch (minor(dev)) {
|
|
#if NSYSMON_ENVSYS > 0
|
|
case SYSMON_MINOR_ENVSYS:
|
|
error = sysmonioctl_envsys(dev, cmd, data, flag, p);
|
|
break;
|
|
#endif
|
|
#if NSYSMON_WDOG > 0
|
|
case SYSMON_MINOR_WDOG:
|
|
error = sysmonioctl_wdog(dev, cmd, data, flag, p);
|
|
break;
|
|
#endif
|
|
default:
|
|
error = ENODEV;
|
|
}
|
|
|
|
return (error);
|
|
}
|