1.\" $NetBSD: acct.2,v 1.12 2002/02/08 01:28:16 ross Exp $ 2.\" 3.\" Copyright (c) 1980, 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.2 8.1 (Berkeley) 6/4/93 35.\" 36.Dd June 4, 1993 37.Dt ACCT 2 38.Os 39.Sh NAME 40.Nm acct 41.Nd enable or disable process accounting 42.Sh LIBRARY 43.Lb libc 44.Sh SYNOPSIS 45.Fd #include \*[Lt]unistd.h\*[Gt] 46.Ft int 47.Fn acct "const char *file" 48.Sh DESCRIPTION 49The 50.Fn acct 51call enables or disables the collection of system accounting 52records. 53If the argument 54.Fa file 55is a nil pointer, accounting is disabled. 56If 57.Fa file 58is an 59.Em existing 60pathname (null-terminated), record collection is enabled and for 61every process initiated which terminates under normal 62conditions an accounting record is appended to 63.Fa file . 64Abnormal conditions of termination are reboots 65or other fatal system problems. 66Records for processes which never terminate can not be 67produced by 68.Fn acct . 69.Pp 70For more information on the record structure used by 71.Fn acct , 72see 73.Pa /usr/include/sys/acct.h 74and 75.Xr acct 5 . 76.Pp 77This call is permitted only to the super-user. 78.Sh NOTES 79Accounting is automatically disabled when the file system the 80accounting file resides on runs out of space; it is enabled when 81space once again becomes available. 82For this purpose, 83.Fn acct 84creates a kernel thread called 85.Dq acctwatch . 86.Sh RETURN VALUES 87On error -1 is returned. 88The file must exist and the call may be exercised only by the super-user. 89.Sh ERRORS 90.Fn acct 91will fail if one of the following is true: 92.Bl -tag -width Er 93.It Bq Er EPERM 94The caller is not the super-user. 95.It Bq Er ENOTDIR 96A component of the path prefix is not a directory. 97.It Bq Er ENAMETOOLONG 98A component of a pathname exceeded 99.Dv {NAME_MAX} 100characters, or an entire path name exceeded 101.Dv {PATH_MAX} 102characters. 103.It Bq Er ENOENT 104The named file does not exist. 105.It Bq Er EACCES 106Search permission is denied for a component of the path prefix, 107or the path name is not a regular file. 108.It Bq Er ELOOP 109Too many symbolic links were encountered in translating the pathname. 110.It Bq Er EROFS 111The named file resides on a read-only file system. 112.It Bq Er EFAULT 113.Fa file 114points outside the process's allocated address space. 115.It Bq Er EIO 116An I/O error occurred while reading from or writing to the file system. 117.El 118Also, 119.Fn acct 120fails if failed to create kernel thread described above. 121See 122.Xr fork 2 123for 124.Va errno 125value. 126.Sh SEE ALSO 127.Xr fork 2 , 128.Xr acct 5 , 129.Xr sa 8 130.Sh HISTORY 131An 132.Fn acct 133function call appeared in 134.At v7 . 135