Home Man
Today's Posts

Linux & Unix Commands - Search Man Pages
Man Page or Keyword Search:
Select Section of Man Page:
Select Man Page Repository:

NetBSD 6.1.5 - man page for acct (netbsd section 5)

ACCT(5) 			     BSD File Formats Manual				  ACCT(5)

     acct -- execution accounting file

     #include <sys/acct.h>

     The kernel maintains the following acct information structure for all processes. If a
     process terminates, and accounting is enabled, the kernel calls the acct(2) function call to
     prepare and append the record to the accounting file.

      * 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;

     If a terminated process was created by an execve(2), the name of the executed file (at most
     ten characters of it) is saved in the field ac_comm and its status is saved by setting one
     of more of the following flags in ac_flag: AFORK, ACORE and ASIG.

     The ASU and ACOMPAT flags are no longer recorded by the system, but are retained for source

     lastcomm(1), acct(2), execve(2), accton(8), sa(8)

     A acct file format appeared in Version 7 AT&T UNIX.

BSD					December 22, 2006				      BSD

All times are GMT -4. The time now is 01:54 AM.

Unix & Linux Forums Content Copyrightę1993-2018. All Rights Reserved.
Show Password