3rd-party/linux-kernel-module-cheat
1
0
Fork 0
mirror of https://github.com/cirosantilli/linux-kernel-module-cheat.git synced 2026-01-28 04:24:26 +01:00
Code Issues Releases Wiki Activity

tty: also demo serial port on gui vc:

Browse Source
This commit is contained in:
Ciro Santilli
2018-05-23 05:45:16 +01:00
parent ca07460fcf
commit 82872f9467
1 changed files with 15 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

20
README.adoc
View File

@@ -3434,8 +3434,8 @@ tty63::respawn:-/bin/sh
./build ./build
./run -x -- \ ./run -x -- \
-serial telnet::1235,server,nowait \ -serial telnet::1235,server,nowait \
-serial vc:800x600 \
-serial telnet::1236,server,nowait \ -serial telnet::1236,server,nowait \
-serial telnet::1237,server,nowait \
; ;
.... ....
@@ -3449,16 +3449,26 @@ We don't add more TTYs by default because it would spawn more processes, even if
On the GUI, switch TTYs with: On the GUI, switch TTYs with:
* `Alt-Left` or `Alt-Right:` go to previous / next populated TTY. Skips over empty TTYs. * `Alt-Left` or `Alt-Right:` go to previous / next populated `/dev/ttyN` TTY. Skips over empty TTYs.
* `Alt-Fn`: go to the nth TTY. If it is not populated, don't go there. * `Alt-Fn`: go to the nth TTY. If it is not populated, don't go there.
* `chvt <n>`: go to the n-th virtual TTY, even if it is empty: https://superuser.com/questions/33065/console-commands-to-change-virtual-ttys-in-linux-and-openbsd * `chvt <n>`: go to the n-th virtual TTY, even if it is empty: https://superuser.com/questions/33065/console-commands-to-change-virtual-ttys-in-linux-and-openbsd
You can also test this on most hosts such as Ubuntu 18.04, except that when in the GUI, you must use `Ctrl-Alt-Fx` to switch to another terminal. You can also test this on most hosts such as Ubuntu 18.04, except that when in the GUI, you must use `Ctrl-Alt-Fx` to switch to another terminal.
Then, go to the text shells we opened previously, and press enter, and you will see that we have: Next, we also have the following shells running on the serial ports, hit enter to activate them:
* one shell on the shell that was used to run QEMU * `/dev/ttyS0`: first shell that was used to run QEMU, corresponds to QEMU's `-serial mon:stdio`.
* one shell on the second shell running `telnet` +
It would also work if we used `-serial stdio`, but:
+
--
** `Ctrl-C` would kill QEMU instead of going to the guest
** `Ctrl-A C` wouldn't open the QEMU console there
--
+
see also: https://stackoverflow.com/questions/49716931/how-to-run-qemu-with-nographic-and-monitor-but-still-be-able-to-send-ctrlc-to
* `/dev/ttyS1`: second shell running `telnet`
* `/dev/ttyS2`: go on the GUI and enter `Ctrl-Alt-2`, corresponds to QEMU's `-serial vc`. Go back to the main console with `Ctrl-Alt-1`.
although we cannot change between terminals from there. although we cannot change between terminals from there.