ttys - terminal control database file, for trusted systems
The system supports a single terminal control database containing
entries for each local terminal that can log into the system.
Authentication programs use information contained in the terminal
control database to determine if login from the terminal is permitted.
Additional fields are maintained for informational purposes.
The format of the terminal control database file is identical to other
system authentication database files. For more information on the file
format, see authcap(4). The file consists of keyword field
identifiers and values for those fields. The keyword identifiers
supported and their use include:
t_devname This field defines the terminal device name for the
entry. The terminal device is expected to be
contained in the /dev directory, therefore this
prefix should not be specified. If the terminal
entry describes the /dev/tty1 device, the t_devname
field should contain tty1.
t_uid This field records the user id of the last user to
successfully login using the terminal device.
t_logtime This time_t field records the last successful login
time to the terminal device.
t_unsuctime This time_t field records the last unsuccessful
login time to the terminal device.
t_failures This field records the number of consecutive
unsuccessful login attempts to the terminal device.
t_maxtries This field specifies the maximum number of
consecutive unsuccessful login attempts permitted
using the terminal before the terminal is locked.
Once the terminal is locked, it must be unlocked by
an authorized administrator.
t_login_timeout This field specifies the login timeout value (sec).
t_logdelay This field specifies the delay between login tries
t_lock This flag field indicates whether the terminal
device has been administratively locked or not. This
Hewlett-Packard Company - 1 - HP-UX Release 11i: November 2000
field is manipulated by authorized administrators
The following is an example of a terminal control database entry:
This entry is for the system console device, /dev/console. The most
recent successful login session was for the user reese. The entry
records the system time for the current successful login and the time
of the most recent unsuccessful login attempt.
Remote terminals (ptys) should not be added to the devassign or ttys
databases. Device name formats treated as ptys by login are:
pty[x][y] where x is a letter, and y is a hex number
tty[x][y] where x is a letter, and y is a hex number
ttys was developed by HP.
/tcb/files/ttys Terminal control database file
login(1), getprtcent(3), devassign(4), authcap(4), default(4).
Hewlett-Packard Company - 2 - HP-UX Release 11i: November 2000