20 years of CONFIG_VT David Herrmann <dh.herrmann@gmail.com> - PowerPoint PPT Presentation

May 14, 2023 •312 likes •529 views

20 years of CONFIG_VT David Herrmann <dh.herrmann@gmail.com> According to slashdot: My linux-kernel VTs... ...can magically recover a system without a rootfs! provide a shell in the kernel! ...drive serial consoles! ...have a clean

20 years of CONFIG_VT David Herrmann <dh.herrmann@gmail.com>
According to slashdot: My linux-kernel VTs...
...can magically recover a system without a rootfs!
…provide a shell in the kernel!
...drive serial consoles!
...have a clean code-base!
...haven't had any bugs in the last century!
linux-0.01 “Hopefully this will be a rather complete vt102 implementation” (drivers/tty/vt/vt.c)
Unix Session-Management setsid() / setpgid() “I haven't get the stomach for it. I also don't fully understand sessions/pgrp etc. Let somebody who does explain it.”
linux-0.11 console beeping
linux-0.12 VTs!
linux-0.96a X11 support: – KDSETMODE – KDSKBMODE
linux-0.99.1 VT_SETMODE (and advanced beeping)
linux-1.3.38 TGA-console
linux-1.3.94 fbdev support
linux-2.1.67 ● fbcon ● txtcon ● vgacon ● fonts
kmscon
systemd-logind
open(“/dev/<sth>”, …) logind.TakeDevice(“/dev/<sth>”)

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