On 1/25/2016 4:55 PM, Jeffrey Ross wrote: > I'm in the process of setting up an SSH jail, for the most part its > working as expected with one exception, I want to provide access to > /dev/ttyUSB0 through /dev/ttyUSB4 (not 2) via cu. > > When I attempt to use "cu -lttyUSB0 -s9600" I always get "line in use" > even through it is not in use and from another account not restricted to > the "jail" I can successfully connect to the ttyUSB0. > > I've tried creating $chroot/ > > run/ > lock/ > lockdev/ > uucp/ > var/ > run -> symbolic link to $chroot/run > lock -> symbolic link to $chroot/run/lock > > and then matched the directory permissions so they are the same as the > "real" system. > > ls -l $chroot/dev/ttyUSB? > crwxrwxrwx 1 root dialout 188, 0 Jan 24 14:48 ttyUSB0 > crwxrwxrwx 1 root dialout 188, 1 Jan 24 14:49 ttyUSB1 > crwxrwxrwx 1 root dialout 188, 3 Jan 24 14:49 ttyUSB3 > crwxrwxrwx 1 root dialout 188, 4 Jan 24 14:49 ttyUSB4 > > The dialout group is 18 and the user is in group 18, initially I set the > permissions for the ttyUSB? to 660 before changing it to 777 as a last > ditch effort. > > The "real" /dev/ttyUSB? - > > ls -l /dev/ttyUSB? > crw-rw---- 1 root dialout 188, 0 Jan 24 14:44 /dev/ttyUSB0 > crw-rw---- 1 root dialout 188, 1 Jan 23 21:48 /dev/ttyUSB1 > crw-rw---- 1 root dialout 188, 3 Jan 24 15:12 /dev/ttyUSB3 > crw-rw---- 1 root dialout 188, 4 Jan 23 21:48 /dev/ttyUSB4 > > I'm probably missing something simple and any suggestions would be > appreciated. > > Thanks, Jeff > > Hello, you can try lshell, it gives the user a limited shell with a list of configurable allowed commands. -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe or change subscription options: https://admin.fedoraproject.org/mailman/listinfo/users Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct Guidelines: http://fedoraproject.org/wiki/Mailing_list_guidelines Have a question? Ask away: http://ask.fedoraproject.org
