1.\" $OpenBSD: acct.2,v 1.20 2021/01/03 18:10:27 rob Exp $ 2.\" $NetBSD: acct.2,v 1.6 1995/02/27 12:31:47 cgd Exp $ 3.\" 4.\" Copyright (c) 1980, 1991, 1993 5.\" The Regents of the University of California. All rights reserved. 6.\" 7.\" Redistribution and use in source and binary forms, with or without 8.\" modification, are permitted provided that the following conditions 9.\" are met: 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in the 14.\" documentation and/or other materials provided with the distribution. 15.\" 3. Neither the name of the University nor the names of its contributors 16.\" may be used to endorse or promote products derived from this software 17.\" without specific prior written permission. 18.\" 19.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29.\" SUCH DAMAGE. 30.\" 31.\" @(#)acct.2 8.1 (Berkeley) 6/4/93 32.\" 33.Dd $Mdocdate: January 3 2021 $ 34.Dt ACCT 2 35.Os 36.Sh NAME 37.Nm acct 38.Nd enable or disable process accounting 39.Sh SYNOPSIS 40.In unistd.h 41.Ft int 42.Fn acct "const char *file" 43.Sh DESCRIPTION 44The 45.Fn acct 46call enables or disables the collection of system accounting records. 47If 48.Fa file 49is 50.Dv NULL , 51accounting is disabled. 52If 53.Fa file 54is an existing, NUL-terminated pathname, record collection is enabled. 55For every process initiated which terminates under normal conditions or 56misbehaves in very specific ways (e.g. file access prevented by unveil), 57an accounting record is appended to 58.Fa file . 59Abnormal conditions of termination are reboots or other 60fatal system problems. 61.Fn acct 62is only available on kernels compiled with the 63.Cm ACCOUNTING 64option. 65.Pp 66For more information on the record structure used by 67.Fn acct , 68see 69.Pa /usr/include/sys/acct.h 70and 71.Xr acct 5 . 72.Pp 73This call is permitted only to the superuser. 74.Sh NOTES 75Accounting is automatically disabled when the file system the 76accounting file resides on runs out of space; it is enabled when 77space once again becomes available. 78.Sh RETURN VALUES 79.Rv -std 80.Sh ERRORS 81.Fn acct 82will fail if one of the following is true: 83.Bl -tag -width Er 84.It Bq Er EPERM 85The caller is not the superuser. 86.It Bq Er ENOTDIR 87A component of the path prefix is not a directory. 88.It Bq Er ENAMETOOLONG 89A component of a pathname exceeded 90.Dv NAME_MAX 91characters, or an entire pathname (including the terminating NUL) 92exceeded 93.Dv PATH_MAX 94bytes. 95.It Bq Er ENOENT 96The named file does not exist. 97.It Bq Er EACCES 98Search permission is denied for a component of the path prefix, 99or the pathname is not a regular file. 100.It Bq Er ELOOP 101Too many symbolic links were encountered in translating the pathname. 102.It Bq Er EROFS 103The named file resides on a read-only file system. 104.It Bq Er EFAULT 105.Fa file 106points outside the process's allocated address space. 107.It Bq Er EIO 108An I/O error occurred while reading from or writing to the file system. 109.El 110.Sh SEE ALSO 111.Xr acct 5 , 112.Xr accton 8 , 113.Xr sa 8 114.Sh HISTORY 115An 116.Fn acct 117function call appeared in 118.At v7 . 119