Commit Graph

17 Commits

Author SHA1 Message Date
Warner Losh
e310437971 For video consoles, only launch a getty if the device exists.
Differential Revision: https://reviews.freebsd.org/D15169
2018-05-09 20:49:00 +00:00
Glen Barber
d47fd83325 Enable all callin ttys if the tty is an available console.
Discussed on:	-arch@ (no objections)
MFC after:	1 week
Sponsored by:	The FreeBSD Foundation
2015-10-20 16:10:46 +00:00
Marcel Moolenaar
bc0770d707 Change the terminal type/class for enabled serial lines to 3wire. This
allows us to change the uart(4) driver to not hardcode specific line
settings for the serial console.

A terminal type of 3wire makes sure the console still works when no DCD
signal is present, which preserves behviour. When it is known that the
terminal server (or DCE in general) provides DCD, a terminal type/class
of std can be used. This has the effect of being logged out when one
disconnects from the console -- improving security overall.

Likewise, when uart(4) does not fixate the baudrate, one can change
the terminal type/class to set a specific baudrate. An operator can use
this to change the console speed mid-flight, without needing a reboot.
Of course it helps in this respect if and when the firmware can be
configured from the OS.

The above mentioned capabilities depend on uart(4) being changed, which
is to happen next.
2014-03-09 21:06:22 +00:00
Ed Schouten
b15ce1ef26 Remove the reference to pseudo-terminals from the description.
Pseudo-terminals are no longer listed in this file, since the utmpx
implementation doesn't depend on ttyslot().
2011-03-30 08:22:29 +00:00
Ed Schouten
bcc7f0f408 Remove pseudo-terminals from ttys(5).
When we had utmp(5), we had to list all the psuedo-terminals in ttys(5)
to make ttyslot(3) function properly. Now that pututxline(3) deals with
slot allocation internally (not based on TTY names), we don't need to
list all the TTYs on the system in ttys(5) to make user accounting work
properly.

This patch removes all the entries from the /etc/ttys files, but also
the pts(4) entries that were appended implicitly, which was added in
r154838.
2010-01-27 11:54:42 +00:00
Ed Schouten
e42fc36867 Switch the default terminal emulation style to xterm for most platforms.
Right now syscons(4) uses a cons25-style terminal emulator. The
disadvantages of that are:

- Little compatibility with embedded devices with serial interfaces.
- Bad bandwidth efficiency, mainly because of the lack of scrolling
  regions.
- A very hard transition path to support for modern character sets like
  UTF-8.

Our terminal emulation library, libteken, has been supporting
xterm-style terminal emulation for months, so flip the switch and make
everyone use an xterm-style console driver.

I still have to enable this on i386. Right now pc98 and i386 share the
same /etc/ttys file. I'm not going to switch pc98, because it uses its
own Kanji-capable cons25 emulator.

IMPORTANT: What to do if things go wrong (i.e. graphical artifacts):

- Run the application inside script(1), try to reduce the problem and
  send me the log file.
- In the mean time, you can run `vidcontrol -T cons25' and `export
  TERM=cons25' so you can run applications the same way you did before.
  You can also build your kernel with `options TEKEN_CONS25' to make all
  virtual terminals use the cons25 emulator by default.

Discussed on:	current@
2009-11-13 05:54:55 +00:00
Ed Schouten
fcbfce6643 Remove the note about using vt220, which makes no sense at all.
vt220 will not work better. Even though it probably will remove warnings
about unknown terminal types, a cons25 emulator is not compatible with
vt220 at all.
2009-06-14 22:35:33 +00:00
Ed Schouten
5ebad6a76a Remove pts(4) entries from /etc/ttys.
Even though I increased the amount of pts(4) entries in /etc/ttys some
time ago, I didn't realize back then those entries shouldn't have been
there in the first place.

I just looked at the getttyent() source code and it turns out when you
call setttyent(), it walks through /dev/pts and looks for the device
with the highest number. After you receive EOF's from getttyent(), it
makes up entries for pts(4) devices.

This means that adding entries for pts(4) is somewhat harmful, because
if you now traverse the list, you get redundant entries, so just remove
them.
2009-02-12 19:21:48 +00:00
Ed Schouten
0a3bd811c6 Restore 256 pty(4) entries.
As discussed with Robert Watson on the src-committers list, it is safer
to keep at least some pty(4) entries in /etc/ttys, for applications that
roll their own PTY allocation routine and only search for BSD-style
PTY's.

This means we've now just toggled the amount of entries for pts(4) and
pty(4).

Requested by:	rwatson
2008-08-24 08:41:29 +00:00
Ed Schouten
fa38c73642 Remove old BSD-style entries from /etc/ttys and increase pts(4) to 512.
Because we now use pts(4)-style PTY's exclusively, there is no use for
these entries in /etc/ttys. Right now the pts(4) entries only go from 0
to 255. Because we're going to touch these files anyway, increase the
number to 511.

Discussed with:	philip (ex-mentor)
2008-08-23 14:36:39 +00:00
John Baldwin
790c2471b9 Bump up the number of ttys supported by pty(4) to 512 by making use of
[pt]ty[lmnoLMNO][0-9a-v].

MFC after:	3 days
Reviewed by:	rwatson
2007-11-19 20:49:42 +00:00
Robert Watson
dc08061ccd Add ttys lines for pts/0-pts/255.
MFC after:	3 days
2007-11-15 16:22:59 +00:00
Doug Barton
9c933e2939 Remove more vestiges of /usr/X11R6, but leave mtree for portmgr. 2007-05-29 06:37:58 +00:00
Marcel Moolenaar
d62866b236 o Remove screen, created by the unnecessary ofw_console(4)
o  Remove ttyyX, created by the obsolete zs(4)
o  Replace ttydX by ttyuX, which is created by uart(4)
o  Enable ttyu0 as a console to better support the xserve.

MFC after: 1 week
2007-01-26 06:22:34 +00:00
Peter Grehan
c3614b63a2 Comment out ofw_console 'screen' entry and zs tty entries.
The OpenFirmware console isn't used on real systems anymore and
I never get to multi-user mode in psim. There are problems with
zs that need to be resolved before these lines can be enabled.

This eliminates disconcerting warnings on boot.

MFC after:	2 days
2005-09-10 22:46:03 +00:00
Peter Grehan
f16eb1e821 Remove obsolete ttya/ttyb entries and replace with ttyy0/1.
Mark origin of ofw_console(4) and zs(4) devices.

MFC after:  3 days
2005-07-14 07:08:49 +00:00
Peter Grehan
2d85631ba7 PowerPC ttys file. 2004-02-04 01:44:34 +00:00