kern_acct.c revision 1.1.1.2
1 1.1.1.2 fvdl /*- 2 1.1.1.2 fvdl * Copyright (c) 1982, 1986, 1989, 1993 3 1.1.1.2 fvdl * The Regents of the University of California. All rights reserved. 4 1.1.1.2 fvdl * (c) UNIX System Laboratories, Inc. 5 1.1.1.2 fvdl * All or some portions of this file are derived from material licensed 6 1.1.1.2 fvdl * to the University of California by American Telephone and Telegraph 7 1.1.1.2 fvdl * Co. or Unix System Laboratories, Inc. and are reproduced herein with 8 1.1.1.2 fvdl * the permission of UNIX System Laboratories, Inc. 9 1.1.1.2 fvdl * 10 1.1.1.2 fvdl * Redistribution and use in source and binary forms, with or without 11 1.1.1.2 fvdl * modification, are permitted provided that the following conditions 12 1.1.1.2 fvdl * are met: 13 1.1.1.2 fvdl * 1. Redistributions of source code must retain the above copyright 14 1.1.1.2 fvdl * notice, this list of conditions and the following disclaimer. 15 1.1.1.2 fvdl * 2. Redistributions in binary form must reproduce the above copyright 16 1.1.1.2 fvdl * notice, this list of conditions and the following disclaimer in the 17 1.1.1.2 fvdl * documentation and/or other materials provided with the distribution. 18 1.1.1.2 fvdl * 3. All advertising materials mentioning features or use of this software 19 1.1.1.2 fvdl * must display the following acknowledgement: 20 1.1.1.2 fvdl * This product includes software developed by the University of 21 1.1.1.2 fvdl * California, Berkeley and its contributors. 22 1.1.1.2 fvdl * 4. Neither the name of the University nor the names of its contributors 23 1.1.1.2 fvdl * may be used to endorse or promote products derived from this software 24 1.1.1.2 fvdl * without specific prior written permission. 25 1.1.1.2 fvdl * 26 1.1.1.2 fvdl * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 1.1.1.2 fvdl * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 1.1.1.2 fvdl * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 1.1.1.2 fvdl * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 1.1.1.2 fvdl * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 1.1.1.2 fvdl * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 1.1.1.2 fvdl * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 1.1.1.2 fvdl * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 1.1.1.2 fvdl * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 1.1.1.2 fvdl * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 1.1.1.2 fvdl * SUCH DAMAGE. 37 1.1.1.2 fvdl * 38 1.1.1.2 fvdl * from: @(#)kern_acct.c 8.1 (Berkeley) 6/14/93 39 1.1.1.2 fvdl */ 40 1.1.1.2 fvdl 41 1.1.1.2 fvdl #include <sys/param.h> 42 1.1.1.2 fvdl #include <sys/proc.h> 43 1.1.1.2 fvdl #include <sys/mount.h> 44 1.1.1.2 fvdl #include <sys/vnode.h> 45 1.1.1.2 fvdl #include <sys/file.h> 46 1.1.1.2 fvdl #include <sys/syslog.h> 47 1.1.1.2 fvdl #include <sys/kernel.h> 48 1.1.1.2 fvdl 49 1.1.1.2 fvdl struct acct_args { 50 1.1.1.2 fvdl char *fname; 51 1.1.1.2 fvdl }; 52 1.1.1.2 fvdl acct(a1, a2, a3) 53 1.1.1.2 fvdl struct proc *a1; 54 1.1.1.2 fvdl struct acct_args *a2; 55 1.1.1.2 fvdl int *a3; 56 1.1.1.2 fvdl { 57 1.1.1.2 fvdl /* 58 1.1.1.2 fvdl * Body deleted. 59 1.1.1.2 fvdl */ 60 1.1.1.2 fvdl return (ENOSYS); 61 1.1.1.2 fvdl } 62 1.1.1.2 fvdl 63 1.1.1.2 fvdl acct_process(a1) 64 1.1.1.2 fvdl struct proc *a1; 65 1.1.1.2 fvdl { 66 1.1.1.2 fvdl 67 1.1.1.2 fvdl /* 68 1.1.1.2 fvdl * Body deleted. 69 1.1.1.2 fvdl */ 70 1.1.1.2 fvdl return; 71 1.1.1.2 fvdl } 72 1.1.1.2 fvdl 73 1.1.1.2 fvdl /* 74 1.1.1.2 fvdl * Periodically check the file system to see if accounting 75 1.1.1.2 fvdl * should be turned on or off. 76 1.1.1.2 fvdl */ 77 1.1.1.2 fvdl 78 1.1.1.2 fvdl /* 79 1.1.1.2 fvdl * Values associated with enabling and disabling accounting 80 1.1.1.2 fvdl */ 81 1.1.1.2 fvdl int acctsuspend = 2; /* stop accounting when < 2% free space left */ 82 1.1.1.2 fvdl int acctresume = 4; /* resume when free space risen to > 4% */ 83 1.1.1.2 fvdl int acctchkfreq = 15; /* frequency (in seconds) to check space */ 84 1.1.1.2 fvdl 85 1.1.1.2 fvdl /* 86 1.1.1.2 fvdl * SHOULD REPLACE THIS WITH A DRIVER THAT CAN BE READ TO SIMPLIFY. 87 1.1.1.2 fvdl */ 88 1.1.1.2 fvdl struct vnode *acctp; 89 1.1.1.2 fvdl struct vnode *savacctp; 90 1.1.1.2 fvdl 91 1.1.1.2 fvdl /* ARGSUSED */ 92 1.1.1.2 fvdl void 93 1.1.1.2 fvdl acctwatch(a) 94 1.1.1.2 fvdl void *a; 95 1.1.1.2 fvdl { 96 1.1.1.2 fvdl struct statfs sb; 97 1.1.1.2 fvdl 98 1.1.1.2 fvdl if (savacctp) { 99 1.1.1.2 fvdl (void)VFS_STATFS(savacctp->v_mount, &sb, (struct proc *)0); 100 1.1.1.2 fvdl if (sb.f_bavail > acctresume * sb.f_blocks / 100) { 101 1.1.1.2 fvdl acctp = savacctp; 102 1.1.1.2 fvdl savacctp = NULL; 103 1.1.1.2 fvdl log(LOG_NOTICE, "Accounting resumed\n"); 104 1.1.1.2 fvdl } 105 1.1.1.2 fvdl } else { 106 1.1.1.2 fvdl if (acctp == NULL) 107 1.1.1.2 fvdl return; 108 1.1.1.2 fvdl (void)VFS_STATFS(acctp->v_mount, &sb, (struct proc *)0); 109 1.1.1.2 fvdl if (sb.f_bavail <= acctsuspend * sb.f_blocks / 100) { 110 1.1.1.2 fvdl savacctp = acctp; 111 1.1.1.2 fvdl acctp = NULL; 112 1.1.1.2 fvdl log(LOG_NOTICE, "Accounting suspended\n"); 113 1.1.1.2 fvdl } 114 1.1.1.2 fvdl } 115 1.1.1.2 fvdl timeout(acctwatch, NULL, acctchkfreq * hz); 116 1.1.1.2 fvdl } 117
Indexes created Sun Sep 21 20:09:37 GMT 2025