-.\" Hey Emacs! This file is -*- nroff -*- source.
-.\"
.\" Copyright (c) 1993 Michael Haardt
.\" (michael@moria.de),
.\" Fri Apr 2 11:32:09 MET DST 1993
.\"
+.\" %%%LICENSE_START(GPLv2+_DOC_FULL)
.\" This is free documentation; you can redistribute it and/or
.\" modify it under the terms of the GNU General Public License as
.\" published by the Free Software Foundation; either version 2 of
.\" GNU General Public License for more details.
.\"
.\" You should have received a copy of the GNU General Public
-.\" License along with this manual; if not, write to the Free
-.\" Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111,
-.\" USA.
+.\" License along with this manual; if not, see
+.\" <http://www.gnu.org/licenses/>.
+.\" %%%LICENSE_END
.\"
.\" Modified 1993-07-22 by Rik Faith <faith@cs.unc.edu>
.\" Modified 1993-08-10 by Alan Cox <iiitac@pyramid.swansea.ac.uk>
.\" Modified 1998-11-04 by Tigran Aivazian <tigran@sco.com>
.\" Modified 2004-05-27, 2004-06-17, 2004-06-23 by Michael Kerrisk
.\"
-.TH ACCT 2 2004-06-23 "Linux 2.6.7" "Linux Programmer's Manual"
+.TH ACCT 2 2016-03-15 "Linux" "Linux Programmer's Manual"
.SH NAME
acct \- switch process accounting on or off
.SH SYNOPSIS
.BI "int acct(const char *" filename );
.fi
.ad b
+.sp
+.in -4n
+Feature Test Macro Requirements for glibc (see
+.BR feature_test_macros (7)):
+.in
+.sp
+.BR acct ():
+.nf
+ Since glibc 2.21:
+.\" commit 266865c0e7b79d4196e2cc393693463f03c90bd8
+ _DEFAULT_SOURCE
+ In glibc 2.19 and 2.20:
+ _DEFAULT_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE\ <\ 500)
+ Up to and including glibc 2.19:
+ _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE\ <\ 500)
+.fi
.SH DESCRIPTION
-When called with the name of an existing file as argument, accounting is
-turned on, records for each terminating process are appended to
-\fIfilename\fP as it terminates. An argument of NULL causes
-accounting to be turned off.
-.SH "RETURN VALUE"
-On success, zero is returned. On error, \-1 is returned, and
+The
+.BR acct ()
+system call enables or disables process accounting.
+If called with the name of an existing file as its argument,
+accounting is turned on,
+and records for each terminating process are appended to
+.I filename
+as it terminates.
+An argument of NULL causes accounting to be turned off.
+.SH RETURN VALUE
+On success, zero is returned.
+On error, \-1 is returned, and
.I errno
is set appropriately.
.SH ERRORS
in the path prefix of
.I filename
(see also
-.BR path_resolution (2)),
+.BR path_resolution (7)),
or
.I filename
is not a regular file.
.IR filename .
.TP
.B EISDIR
-.I filename
+.I filename
is a directory.
.TP
.B ELOOP
-Too many symbolic links were encountered in resolving
+Too many symbolic links were encountered in resolving
.IR filename .
.TP
.B ENAMETOOLONG
was too long.
.TP
.B ENFILE
-The system limit on the total number of open files has been reached.
+The system-wide limit on the total number of open files has been reached.
.TP
.B ENOENT
The specified filename does not exist.
BSD process accounting has not been enabled when the operating system
kernel was compiled.
The kernel configuration parameter controlling this feature is
-CONFIG_BSD_PROCESS_ACCT.
+.BR CONFIG_BSD_PROCESS_ACCT .
.TP
.B ENOTDIR
-A component used as a directory in
-.I filename
+A component used as a directory in
+.I filename
is not in fact a directory.
.TP
.B EPERM
The calling process has insufficient privilege to enable process accounting.
-On Linux the
+On Linux, the
.B CAP_SYS_PACCT
capability is required.
.TP
.B EROFS
-.I filename
-refers to a file on a read-only file system.
+.I filename
+refers to a file on a read-only filesystem.
.TP
.B EUSERS
There are no more free file structures or we ran out of memory.
-.SH "CONFORMING TO"
-SVr4, 4.3BSD (but not POSIX).
-.\" SVr4 documents an EBUSY error condition, but no EISDIR or ENOSYS.
+.SH CONFORMING TO
+SVr4, 4.3BSD (but not POSIX).
+.\" SVr4 documents an EBUSY error condition, but no EISDIR or ENOSYS.
.\" Also AIX and HP-UX document EBUSY (attempt is made
.\" to enable accounting when it is already enabled), as does Solaris
.\" (attempt is made to enable accounting using the same file that is
.\" currently being used).
.SH NOTES
-No accounting is produced for programs running when a crash occurs. In
-particular, nonterminating processes are never accounted for.
-.SH "SEE ALSO"
+No accounting is produced for programs running when a system crash occurs.
+In particular, nonterminating processes are never accounted for.
+
+The structure of the records written to the accounting file is described in
.BR acct (5).
+.SH SEE ALSO
+.BR acct (5)
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