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/*-
* Copyright (c) 1982, 1986, 1989, 1993
* The Regents of the University of California. All rights reserved.
* (c) UNIX System Laboratories, Inc.
* All or some portions of this file are derived from material licensed
* to the University of California by American Telephone and Telegraph
* Co. or Unix System Laboratories, Inc. and are reproduced herein with
* the permission of UNIX System Laboratories, Inc.
*
* 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 the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* from: @(#)kern_acct.c 8.1 (Berkeley) 6/14/93
*/
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/mount.h>
#include <sys/vnode.h>
#include <sys/file.h>
#include <sys/syslog.h>
#include <sys/kernel.h>
struct acct_args {
char *fname;
};
acct(a1, a2, a3)
struct proc *a1;
struct acct_args *a2;
int *a3;
{
/*
* Body deleted.
*/
return (ENOSYS);
}
acct_process(a1)
struct proc *a1;
{
/*
* Body deleted.
*/
return;
}
/*
* Periodically check the file system to see if accounting
* should be turned on or off.
*/
/*
* Values associated with enabling and disabling accounting
*/
int acctsuspend = 2; /* stop accounting when < 2% free space left */
int acctresume = 4; /* resume when free space risen to > 4% */
int acctchkfreq = 15; /* frequency (in seconds) to check space */
/*
* SHOULD REPLACE THIS WITH A DRIVER THAT CAN BE READ TO SIMPLIFY.
*/
struct vnode *acctp;
struct vnode *savacctp;
/* ARGSUSED */
void
acctwatch(a)
void *a;
{
struct statfs sb;
if (savacctp) {
(void)VFS_STATFS(savacctp->v_mount, &sb, (struct proc *)0);
if (sb.f_bavail > acctresume * sb.f_blocks / 100) {
acctp = savacctp;
savacctp = NULL;
log(LOG_NOTICE, "Accounting resumed\n");
}
} else {
if (acctp == NULL)
return;
(void)VFS_STATFS(acctp->v_mount, &sb, (struct proc *)0);
if (sb.f_bavail <= acctsuspend * sb.f_blocks / 100) {
savacctp = acctp;
acctp = NULL;
log(LOG_NOTICE, "Accounting suspended\n");
}
}
timeout(acctwatch, NULL, acctchkfreq * hz);
}
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