On Mon, Jun 11, 2007 at 09:26:12PM +0000, Paolo Giarrusso wrote: > /bin/bash is running with stding and stdout attached to > /dev/console, and on /dev/console ignores Ctrl-* (and that's on > purpose, and not UML specific). Possibly just the terminal emulator > is noticing the press of Ctrl-C, or it's /dev/console itself.
That explains my problem, thanks. Do you know why that is (maybe so that 'init' cannot be killed from keyboard)? > If you run the open or openvt command, it will run bash on > /dev/ttyXXX and there, you'll see that Ctrl-C works. Alas that doesn't seem to work from rootfstype: # openvt /dev/tty0 Couldnt get a file descriptor referring to the console Could not get a file descriptor referring to the console I also tried # tty /dev/console # exec < /dev/tty0 > /dev/tty0 2>/dev/tty0 # tty /dev/tty0 But that actually doesn't help. I'll try to isolate what getty does, as Jeff suggested; apparently it registers some signals as well. -- Sylvain > ----- Messaggio originale ----- > Da: Sylvain Beucler <[EMAIL PROTECTED]> > A: user-mode-linux-user@lists.sourceforge.net > Inviato: Lunedì 11 giugno 2007, 22:16:25 > Oggetto: [uml-user] C-c/sig.intr is caught > > Hi, > > I'm working on 'umdo', i.e. sudo with User-Mode Linux (attached). > > I use the rootfstype=hostfs command line option. I notice, though, > that C-c, C-\ and C-z (at least) do not work. I'm puzzled because the > key events _are_ sent to the UML-jailed process, yet the signal is > somehow blocked. > > Example: let's run "cat" from a UML'd bash, then press C-c, then C-h, > then C-d (to quit "cat"): > > $ linux rootfstype=hostfs rw quiet init=/bin/bash > root@(none):/# cat > ^H > root@(none):/# stty intr ^H > root@(none):/# cat > ^C > root@(none):/# stty intr ^I > root@(none):/# cat > ^C^H > > Notice that each time, they key associated with 'intr' is caught > sowewhere. > > Idem for C-\ (quit) > Idem for C-z (susp) > C-s (stop), C-q (start), C-d (eof) do work, though. > > > There's more: running through 'getty' enables C-c and C-\ > But C-z is still disabled: > > $ linux rw rootfstype=hostfs quiet init=/sbin/getty -inl /bin/bash 38400 tty0 > root@(none):/# cat > root@(none):/# # C-c worked. > > > How can I enable all key shortcuts in a uml? > Do you know what is the cause of this behavior? > > Thanks, ------------------------------------------------------------------------- This SF.net email is sponsored by DB2 Express Download DB2 Express C - the FREE version of DB2 express and take control of your XML. No limits. Just data. Click to get it now. http://sourceforge.net/powerbar/db2/ _______________________________________________ User-mode-linux-user mailing list User-mode-linux-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/user-mode-linux-user
