Re: [Jailkit-users] ssh in jail and /dev/null problems

[Nikola Knezevic]

Olivier Sessink wrote:
> Nikola Knezevic wrote:
> > Sure thing:
> > address@hidden:/home/chrootusers/jeannie# ls -l dev/null
> > crw-r--r-- 1 666 root 1, 3 2006-11-14 11:02 dev/null
>
> My box certainly has different permissions on /dev/null:
>
> $ ls -l /dev/null
> crw-rw-rw- 1 root root 1, 3 Jan  1  2002 /dev/null
>
> are you sure the permissions are identical?
Sorry, wrong thing went out...
Inside jail:
address@hidden:~$ ls -l /dev/null
crw-rw-rw- 1 root root 1, 3 Nov 14 10:02 /dev/null

outside jail:
address@hidden:/home/chrootusers/jeannie$ ls -l dev/null
crw-rw-rw- 1 root root 1, 3 2006-11-14 11:02 dev/null
address@hidden:/home/chrootusers/jeannie$ ls -l /dev/null
crw-rw-rw- 1 root root 1, 3 2006-10-26 15:26 /dev/null


Strace shows that ssh fails in open(/dev/null, ...) which returns -1, 
although the file exists.
This happens regardless of the shell in jail (jk_lsh or bash).

Cheers,
Nikola