1df8bae1dSRodney W. Grimes /*- 2df8bae1dSRodney W. Grimes * Copyright (c) 1982, 1986, 1989, 1993 3df8bae1dSRodney W. Grimes * The Regents of the University of California. All rights reserved. 4df8bae1dSRodney W. Grimes * (c) UNIX System Laboratories, Inc. 5df8bae1dSRodney W. Grimes * All or some portions of this file are derived from material licensed 6df8bae1dSRodney W. Grimes * to the University of California by American Telephone and Telegraph 7df8bae1dSRodney W. Grimes * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8df8bae1dSRodney W. Grimes * the permission of UNIX System Laboratories, Inc. 9df8bae1dSRodney W. Grimes * 10df8bae1dSRodney W. Grimes * Redistribution and use in source and binary forms, with or without 11df8bae1dSRodney W. Grimes * modification, are permitted provided that the following conditions 12df8bae1dSRodney W. Grimes * are met: 13df8bae1dSRodney W. Grimes * 1. Redistributions of source code must retain the above copyright 14df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer. 15df8bae1dSRodney W. Grimes * 2. Redistributions in binary form must reproduce the above copyright 16df8bae1dSRodney W. Grimes * notice, this list of conditions and the following disclaimer in the 17df8bae1dSRodney W. Grimes * documentation and/or other materials provided with the distribution. 18df8bae1dSRodney W. Grimes * 3. All advertising materials mentioning features or use of this software 19df8bae1dSRodney W. Grimes * must display the following acknowledgement: 20df8bae1dSRodney W. Grimes * This product includes software developed by the University of 21df8bae1dSRodney W. Grimes * California, Berkeley and its contributors. 22df8bae1dSRodney W. Grimes * 4. Neither the name of the University nor the names of its contributors 23df8bae1dSRodney W. Grimes * may be used to endorse or promote products derived from this software 24df8bae1dSRodney W. Grimes * without specific prior written permission. 25df8bae1dSRodney W. Grimes * 26df8bae1dSRodney W. Grimes * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27df8bae1dSRodney W. Grimes * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28df8bae1dSRodney W. Grimes * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29df8bae1dSRodney W. Grimes * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30df8bae1dSRodney W. Grimes * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31df8bae1dSRodney W. Grimes * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32df8bae1dSRodney W. Grimes * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33df8bae1dSRodney W. Grimes * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34df8bae1dSRodney W. Grimes * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35df8bae1dSRodney W. Grimes * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36df8bae1dSRodney W. Grimes * SUCH DAMAGE. 37df8bae1dSRodney W. Grimes * 38df8bae1dSRodney W. Grimes * from: @(#)kern_acct.c 8.1 (Berkeley) 6/14/93 39df8bae1dSRodney W. Grimes */ 40df8bae1dSRodney W. Grimes 41df8bae1dSRodney W. Grimes #include <sys/param.h> 42df8bae1dSRodney W. Grimes #include <sys/proc.h> 43df8bae1dSRodney W. Grimes #include <sys/mount.h> 44df8bae1dSRodney W. Grimes #include <sys/vnode.h> 45df8bae1dSRodney W. Grimes #include <sys/file.h> 46df8bae1dSRodney W. Grimes #include <sys/syslog.h> 47df8bae1dSRodney W. Grimes #include <sys/kernel.h> 48df8bae1dSRodney W. Grimes 49df8bae1dSRodney W. Grimes struct acct_args { 50df8bae1dSRodney W. Grimes char *fname; 51df8bae1dSRodney W. Grimes }; 52df8bae1dSRodney W. Grimes acct(a1, a2, a3) 53df8bae1dSRodney W. Grimes struct proc *a1; 54df8bae1dSRodney W. Grimes struct acct_args *a2; 55df8bae1dSRodney W. Grimes int *a3; 56df8bae1dSRodney W. Grimes { 57df8bae1dSRodney W. Grimes /* 58df8bae1dSRodney W. Grimes * Body deleted. 59df8bae1dSRodney W. Grimes */ 60df8bae1dSRodney W. Grimes return (ENOSYS); 61df8bae1dSRodney W. Grimes } 62df8bae1dSRodney W. Grimes 63df8bae1dSRodney W. Grimes acct_process(a1) 64df8bae1dSRodney W. Grimes struct proc *a1; 65df8bae1dSRodney W. Grimes { 66df8bae1dSRodney W. Grimes 67df8bae1dSRodney W. Grimes /* 68df8bae1dSRodney W. Grimes * Body deleted. 69df8bae1dSRodney W. Grimes */ 70df8bae1dSRodney W. Grimes return; 71df8bae1dSRodney W. Grimes } 72df8bae1dSRodney W. Grimes 73df8bae1dSRodney W. Grimes /* 74df8bae1dSRodney W. Grimes * Periodically check the file system to see if accounting 75df8bae1dSRodney W. Grimes * should be turned on or off. 76df8bae1dSRodney W. Grimes */ 77df8bae1dSRodney W. Grimes 78df8bae1dSRodney W. Grimes /* 79df8bae1dSRodney W. Grimes * Values associated with enabling and disabling accounting 80df8bae1dSRodney W. Grimes */ 81df8bae1dSRodney W. Grimes int acctsuspend = 2; /* stop accounting when < 2% free space left */ 82df8bae1dSRodney W. Grimes int acctresume = 4; /* resume when free space risen to > 4% */ 83df8bae1dSRodney W. Grimes int acctchkfreq = 15; /* frequency (in seconds) to check space */ 84df8bae1dSRodney W. Grimes 85df8bae1dSRodney W. Grimes /* 86df8bae1dSRodney W. Grimes * SHOULD REPLACE THIS WITH A DRIVER THAT CAN BE READ TO SIMPLIFY. 87df8bae1dSRodney W. Grimes */ 88df8bae1dSRodney W. Grimes struct vnode *acctp; 89df8bae1dSRodney W. Grimes struct vnode *savacctp; 90df8bae1dSRodney W. Grimes 91df8bae1dSRodney W. Grimes /* ARGSUSED */ 92df8bae1dSRodney W. Grimes void 93df8bae1dSRodney W. Grimes acctwatch(a) 94df8bae1dSRodney W. Grimes void *a; 95df8bae1dSRodney W. Grimes { 96df8bae1dSRodney W. Grimes struct statfs sb; 97df8bae1dSRodney W. Grimes 98df8bae1dSRodney W. Grimes if (savacctp) { 99df8bae1dSRodney W. Grimes (void)VFS_STATFS(savacctp->v_mount, &sb, (struct proc *)0); 100df8bae1dSRodney W. Grimes if (sb.f_bavail > acctresume * sb.f_blocks / 100) { 101df8bae1dSRodney W. Grimes acctp = savacctp; 102df8bae1dSRodney W. Grimes savacctp = NULL; 103df8bae1dSRodney W. Grimes log(LOG_NOTICE, "Accounting resumed\n"); 104df8bae1dSRodney W. Grimes } 105df8bae1dSRodney W. Grimes } else { 106df8bae1dSRodney W. Grimes if (acctp == NULL) 107df8bae1dSRodney W. Grimes return; 108df8bae1dSRodney W. Grimes (void)VFS_STATFS(acctp->v_mount, &sb, (struct proc *)0); 109df8bae1dSRodney W. Grimes if (sb.f_bavail <= acctsuspend * sb.f_blocks / 100) { 110df8bae1dSRodney W. Grimes savacctp = acctp; 111df8bae1dSRodney W. Grimes acctp = NULL; 112df8bae1dSRodney W. Grimes log(LOG_NOTICE, "Accounting suspended\n"); 113df8bae1dSRodney W. Grimes } 114df8bae1dSRodney W. Grimes } 115df8bae1dSRodney W. Grimes timeout(acctwatch, NULL, acctchkfreq * hz); 116df8bae1dSRodney W. Grimes } 117