Entry in a user-information file
Synopsis:
struct utmp {
char ut_user[UT_NAMESIZE];
#define ut_name ut_user
char ut_id[4];
char ut_line[UT_LINESIZE];
pid_t ut_pid;
short ut_type;
struct exit_status {
short e_termination;
short e_exit;
} ut_exit;
short ut_spare;
time_t ut_time;
};
Description:
The utmp structure describes an entry in a user-information
file.
The members include:
- ut_user
- The user's login name.
- ut_id
- The line number.
- ut_line
- The device name (console).
- ut_pid
- The process ID.
- ut_type
- The type of entry.
The possible values are:
- EMPTY
- RUN_LVL
- BOOT_TIME
- OLD_TIME
- NEW_TIME
- INIT_PROCESS
- LOGIN_PROCESS
- USER_PROCESS
- DEAD_PROCESS
- ACCOUNTING
- ut_exit
- The exit status of a process marked as DEAD_PROCESS.
The structure exit_status includes at least the
following members:
- e_termination — the termination status.
- e_exit — the exit status.
- ut_time
- The time that this entry was made.