1.\" $NetBSD: acct.5,v 1.3 1994/11/30 19:31:10 jtc Exp $ 2.\" 3.\" Copyright (c) 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)acct.5 8.1 (Berkeley) 6/5/93 35.\" 36.Dd June 5, 1993 37.Dt ACCT 5 38.Os 39.Sh NAME 40.Nm acct 41.Nd execution accounting file 42.Sh SYNOPSIS 43.Fd #include <sys/acct.h> 44.Sh DESCRIPTION 45The kernel maintains the following 46.Fa acct 47information structure for all 48processes. If a process terminates, and accounting is enabled, 49the kernel calls the 50.Xr acct 2 51function call to prepare and append the record 52to the accounting file. 53.Bd -literal 54/* 55 * Accounting structures; these use a comp_t type which is a 3 bits base 8 56 * exponent, 13 bit fraction ``floating point'' number. Units are 1/AHZ 57 * seconds. 58 */ 59typedef u_short comp_t; 60 61struct acct { 62 char ac_comm[10]; /* name of command */ 63 comp_t ac_utime; /* user time */ 64 comp_t ac_stime; /* system time */ 65 comp_t ac_etime; /* elapsed time */ 66 time_t ac_btime; /* starting time */ 67 uid_t ac_uid; /* user id */ 68 gid_t ac_gid; /* group id */ 69 short ac_mem; /* memory usage average */ 70 comp_t ac_io; /* count of IO blocks */ 71 dev_t ac_tty; /* controlling tty */ 72#define AFORK 0x01 /* forked but not execed */ 73#define ASU 0x02 /* used super-user permissions */ 74#define ACOMPAT 0x04 /* used compatibility mode */ 75#define ACORE 0x08 /* dumped core */ 76#define AXSIG 0x10 /* killed by a signal */ 77 char ac_flag; /* accounting flags */ 78}; 79 80/* 81 * 1/AHZ is the granularity of the data encoded in the comp_t fields. 82 * This is not necessarily equal to hz. 83 */ 84#define AHZ 64 85 86#ifdef KERNEL 87struct vnode *acctp; 88#endif 89.Ed 90.Pp 91If a terminated process was created by an 92.Xr execve 2 , 93the name of the executed file (at most ten characters of it) 94is saved in the field 95.Fa ac_comm 96and its status is saved by setting one of more of the following flags in 97.Fa ac_flag: 98.Dv AFORK , 99.Dv ASU , 100.Dv ACOMPAT , 101.Dv ACORE 102and 103.Dv ASIG . 104.Sh SEE ALSO 105.Xr acct 2 , 106.Xr execve 2 , 107.Xr sa 8 108.Sh HISTORY 109A 110.Nm 111file format appeared in 112.At v7 . 113