./_Man_NeXT_html/html5/acct.5.html

Manual page for ACCT(5)

acct - execution accounting file

SYNOPSIS

#include <sys/acct.h>

DESCRIPTION

The 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:

/*
 * Copyright (c) 1982, 1986 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 *
 *	@(#)acct.h	7.1 (Berkeley) 6/4/86
 *
 */

/*
 * 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];		/* Accounting command name */
	comp_t	ac_utime;		/* Accounting user time */
	comp_t	ac_stime;		/* Accounting system time */
	comp_t	ac_etime;		/* Accounting elapsed time */
	time_t	ac_btime;		/* Beginning time */
	uid_t	ac_uid;			/* Accounting user ID */
	gid_t	ac_gid;			/* Accounting group ID */
	short	ac_mem;			/* average memory usage */
	comp_t	ac_io;			/* number of disk IO blocks */
	dev_t	ac_tty;			/* control typewriter */
	char	ac_flag;		/* Accounting flag */
};

#define	AFORK	0001		/* has executed fork, but no exec */
#define	ASU	0002		/* used super-user privileges */
#define	ACOMPAT	0004		/* used compatibility mode */
#define	ACORE	0010		/* dumped core */
#define	AXSIG	0020		/* killed by a signal */

/*
 * 1/AHZ is the granularity of the data encoded in the various
 * comp_t fields.  This is not necessarily equal to hz.
 */
#define AHZ 64

#ifdef KERNEL
#ifdef	SYSACCT
struct	acct	acctbuf;
struct  vnode   *acctp;
#else	SYSACCT
#define	acct()
#endif	SYSACCT
#endif

If the process was created by an execve.2 the first 10 characters of the filename appear in ac_comm. The accounting flag contains bits indicating whether execve.2 was ever accomplished, and whether the process ever had super-user privileges.

acct - execution accounting file

SYNOPSIS

DESCRIPTION

SEE ALSO