-.TH ACCT 5 "May 19, 1986"
-.AT 3
-.SH NAME
-acct \- execution accounting file
-.SH SYNOPSIS
-.B #include <sys/acct.h>
-.SH DESCRIPTION
-The
-.IR acct (2)
-system call arranges for entries to be made in an accounting file
-for each process that terminates.
-The accounting file is a sequence of entries whose layout,
-as defined by the include file is:
-.PP
-.nf
-.ta \w'typedef 'u +\w'ACOMPAT 'u +\w'ac_comm[10]; 'u
-.so /usr/include/sys/acct.h
-.fi
-.PP
-If the process was created by an
-.IR execve (2),
-the first 10 characters of the filename appear in
-.I ac_comm.
-The accounting flag contains bits indicating whether
-.IR execve (2)
-was ever accomplished, and whether the process ever had super-user privileges.
-.SH SEE ALSO
-acct(2), execve(2), sa(8)
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\" must display the following acknowledgement:
+.\" This product includes software developed by the University of
+.\" California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" @(#)acct.5 8.1 (Berkeley) 6/5/93
+.\"
+.Dd June 5, 1993
+.Dt ACCT 5
+.Os
+.Sh NAME
+.Nm acct
+.Nd execution accounting file
+.Sh SYNOPSIS
+.Fd #include <sys/acct.h>
+.Sh DESCRIPTION
+The kernel maintains the following
+.Fa acct
+information structure for all
+processes. If a process terminates, and accounting is enabled,
+the kernel calls the
+.Xr acct 2
+function call to prepare and append the record
+to the accounting file.
+.Bd -literal
+/*
+ * Accounting structures; these use a comp_t type which is a 3 bits base 8
+ * exponent, 13 bit fraction ``floating point'' number. Units are 1/AHZ
+ * seconds.
+ */
+typedef u_short comp_t;
+
+struct acct {
+ char ac_comm[10]; /* name of command */
+ comp_t ac_utime; /* user time */
+ comp_t ac_stime; /* system time */
+ comp_t ac_etime; /* elapsed time */
+ time_t ac_btime; /* starting time */
+ uid_t ac_uid; /* user id */
+ gid_t ac_gid; /* group id */
+ short ac_mem; /* memory usage average */
+ comp_t ac_io; /* count of IO blocks */
+ dev_t ac_tty; /* controlling tty */
+#define AFORK 0x01 /* forked but not execed */
+#define ASU 0x02 /* used super-user permissions */
+#define ACOMPAT 0x04 /* used compatibility mode */
+#define ACORE 0x08 /* dumped core */
+#define AXSIG 0x10 /* killed by a signal */
+ char ac_flag; /* accounting flags */
+};
+
+/*
+ * 1/AHZ is the granularity of the data encoded in the comp_t fields.
+ * This is not necessarily equal to hz.
+ */
+#define AHZ 64
+
+#ifdef KERNEL
+struct vnode *acctp;
+#endif
+.Ed
+.Pp
+If a terminated process was created by an
+.Xr execve 2 ,
+the name of the executed file (at most ten characters of it)
+is saved in the field
+.Fa ac_comm
+and its status is saved by setting one of more of the following flags in
+.Fa ac_flag:
+.Dv AFORK ,
+.Dv ASU ,
+.Dv ACOMPAT ,
+.Dv ACORE
+and
+.Dv ASIG .
+.Sh SEE ALSO
+.Xr acct 2 ,
+.Xr execve 2 ,
+.Xr sa 8
+.Sh HISTORY
+A
+.Nm
+file format appeared in
+.At v7 .