[issue1863] Implement 'hammer volume-list' subcommand

Stathis Kamperis <[e-mail]> added the comment:

Fixed, sorry.

I changed strlcpy() to copyout() and also added some rudimentary validation on
the count of volumes to write.

I honestly don't know how to make kernel defend against a lying user-land.

Regards,
Stathis

_____________________________________________________
DragonFly issue tracker <[e-mail]>
<http://bugs.dragonflybsd.org/issue1863>
_____________________________________________________