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	.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT			.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY			.\" 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			.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	.\" SUCH DAMAGE.			.\" SUCH DAMAGE.
	.\"			.\"
	.\" @(#)acct.5 8.1 (Berkeley) 6/5/93			.\" @(#)acct.5 8.1 (Berkeley) 6/5/93
	.\" $FreeBSD$			.\" $FreeBSD$
	.\"			.\"
	.Dd May 15, 2007			.Dd February 13, 2017
	.Dt ACCT 5			.Dt ACCT 5
	.Os			.Os
	.Sh NAME			.Sh NAME
	.Nm acct			.Nm acct
	.Nd execution accounting file			.Nd execution accounting file
	.Sh SYNOPSIS			.Sh SYNOPSIS
	.In sys/types.h			.In sys/types.h
	.In sys/acct.h			.In sys/acct.h
	.Sh DESCRIPTION			.Sh DESCRIPTION
	The kernel maintains the following			The kernel maintains the following
	.Fa acct			.Fa acct
	information structure for all			information structure for all
	processes.			processes.
	If a process terminates, and accounting is enabled,			If a process terminates, and accounting is enabled,
	the kernel calls the			the kernel calls the
	.Xr acct 2			.Xr acct 2
	function call to prepare and append the record			function call to prepare and append the record
	to the accounting file.			to the accounting file.
	.Bd -literal			.Bd -literal
	#define AC_COMM_LEN 16			#define AC_COMM_LEN 16

	/*			/*
	* Accounting structure version 2 (current).			* Accounting structure version 3 (current).
	* The first byte is always zero.			* The first byte is always zero.
	* Time units are microseconds.			* Time units are microseconds.
	*/			*/

	struct acctv2 {			struct acctv3 {
	uint8_t ac_zero; /* zero identifies new version */			uint8_t ac_zero; /* zero identifies new version */
	uint8_t ac_version; /* record version number */			uint8_t ac_version; /* record version number */
	uint16_t ac_len; /* record length */			uint16_t ac_len; /* record length */

	char ac_comm[AC_COMM_LEN]; /* command name */			char ac_comm[AC_COMM_LEN]; /* command name */
	float ac_utime; /* user time */			float ac_utime; /* user time */
	float ac_stime; /* system time */			float ac_stime; /* system time */
	float ac_etime; /* elapsed time */			float ac_etime; /* elapsed time */
	time_t ac_btime; /* starting time */			time_t ac_btime; /* starting time */
	uid_t ac_uid; /* user id */			uid_t ac_uid; /* user id */
	gid_t ac_gid; /* group id */			gid_t ac_gid; /* group id */
	float ac_mem; /* average memory usage */			float ac_mem; /* average memory usage */
	float ac_io; /* count of IO blocks */			float ac_io; /* count of IO blocks */
	__dev_t ac_tty; /* controlling tty */			__dev_t ac_tty; /* controlling tty */

	uint16_t ac_len2; /* record length */			uint16_t ac_len2; /* record length */
	union {			union {
	__dev_t ac_align; /* force v1 compatible alignment */			uint32_t ac_align; /* force v1 compatible alignment */

	#define AFORK 0x01 /* forked but not exec'ed */			#define AFORK 0x01 /* forked but not exec'ed */
	/* ASU is no longer supported */			/* ASU is no longer supported */
	#define ASU 0x02 /* used super-user permissions */			#define ASU 0x02 /* used super-user permissions */
	#define ACOMPAT 0x04 /* used compatibility mode */			#define ACOMPAT 0x04 /* used compatibility mode */
	#define ACORE 0x08 /* dumped core */			#define ACORE 0x08 /* dumped core */
	#define AXSIG 0x10 /* killed by a signal */			#define AXSIG 0x10 /* killed by a signal */
	#define ANVER 0x20 /* new record version */			#define ANVER 0x20 /* new record version */
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