|
|
#include <utmp.h>
#define UTMP_FILE "/var/adm/utmp" #define WTMP_FILE "/var/adm/wtmp" #define ut_name ut_user
The utmp structure includes the following members:
char ut_user[8]; /* user login name */ char ut_id[4]; /* /etc/inittab id (created by */ /* process that puts entry in utmp) */ 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; /* 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 /* max legal value of ut_type */
/* Below are 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 should be no more than 11 chars + */ /* a null character in length. */
#define RUNLVL_MSG "run-level %c" #define BOOT_MSG "system boot" #define OTIME_MSG "old time" #define NTIME_MSG "new time"