UTMP(4)                                                   UTMP(4)



     NAME
          utmp, wtmp - utmp and wtmp entry formats

     SYNOPSIS
          #include <sys/types.h>
          #include <utmp.h>

     DESCRIPTION
          These files, which hold user and accounting information for
          such commands as who(1), write(1), and login(1), have the
          following structure as defined by <utmp.h>:

          #define   UTMP_FILE   "/etc/utmp"
          #define   WTMP_FILE   "/etc/wtmp"
          #define   ut_name     ut_user

          struct utmp {
                 char       ut_user[8];        /* User login name */
                 char       ut_id[4];          /* /etc/inittab id (usually line #) */
                 char       ut_line[12];       /* device name (console, lnxx) */
                 short      ut_pid;            /* process id */
                 short      ut_type;           /* type of entry */
                 struct     exit_status {
                     short      e_termination; /* Process termination status */
                     short      e_exit;        /* Process exit status */
                 } ut_exit;                    /* The exit status of a process
                                                * marked as DEAD_PROCESS. */
                 time_t     ut_time;           /* time entry was made */
          };

          /*  Definitions for ut_type  */
          #define EMPTY         0
          #define RUN_LVL       1
          #define BOOT_TIME     2
          #define OLD_TIME      3
          #define NEW_TIME      4
          #define INIT_PROCESS  5          /* Process spawned by "init" */
          #define LOGIN_PROCESS 6          /* A "getty" process waiting for login */
          #define USER_PROCESS  7          /* A user process */
          #define DEAD_PROCESS  8
          #define ACCOUNTING    9
          #define UTMAXTYPE     ACCOUNTING /* Largest legal value of ut_type */

          /*  Special strings or formats used in the "ut_line" field when  */
          /*  accounting for something other than a process  */
          /*  No string for the ut_line field can be more than 11 chars +  */
          /*  a NULL in length  */
          #define RUNLVL_MSG "run-level %c"
          #define BOOT_MSG   "system boot"
          #define OTIME_MSG  "old time"





     Page 1                                        (last mod. 8/20/87)

     UTMP(4)                                                   UTMP(4)



          #define NTIME_MSG  "new time"

     FILES
          /etc/utmp
          /etc/wtmp

     SEE ALSO
          getut(3C).
          login(1), who(1), write(1) in the User's Reference Manual.

     ORIGIN
          AT&T V.3











































     Page 2                                        (last mod. 8/20/87)