tree fc50075cbfeb9f0ba7cb7af0bab05514e6a0feaa
parent 0d140d5b8e17951f9732dd05d1f483e910db20b1
author Barret Rhoden <brho@cs.berkeley.edu> 1425654020 -0500
committer Barret Rhoden <brho@cs.berkeley.edu> 1425654020 -0500

Fixes unchecked results from parsecmd

Before accessing the strings of a parsecmd, we must check the nf (num
fields).  Many devices were not checking, so something like
	echo "" > /net/ether0/stats
Would trigger a PF.

Using lookupcmd() is safe, since it check the nf internally.  But any
naked access to the fields (like with strcmp) requires a check.