Userland problems from kern.pts.enable=1

Kris Kennaway kris at
Sun Jun 17 21:39:50 UTC 2007

When the kern.pts.enable sysctl is set to '1', pseudo-ttys are created
with device name /dev/pts/${NUMBER}.  With some kernel fixes from kib
this appears to now be stable and the kernel side is ready for a
possible change of default.  However, the new device naming confuses
some userland utilities.  For example:

pointyhat# write simon
write: /dev/398: No such file or directory

simon was logged in on /dev/pts/398.

killall -t also fails to parse the new device format:

bento# ps -t pts/187
67734 187  Ss     0:00.04 /bin/csh
72599 187  R+     0:00.00 ps -t pts/187
bento# killall -t pts/187
killall: stat(/dev/ttypts/187): No such file or directory

It would also be useful if ps -t recognized a numeric argument as
magic and converted it to add the pts/.  It already appears to do the
converse when displaying the TTY, as you can see above.

There are probably other utilities also affected.


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