.\" Copyright 1991 The Regents of the University of California.
.\" %sccs.include.redist.roff%
.\" @(#)acct.5 6.3 (Berkeley) %G%
.Nd execution accounting file
.Fd #include <sys/acct.h>
The kernel maintains the following
information structure for all
processes. If a process terminates, and accounting is enabled,
function call to prepare and append the record
* 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
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.
If a terminated process was created by an
the name of the executed file (at most ten characters of it)
and its status is saved by setting one of more of the following flags in
projects / unix-history / blob