25 Sep
2017
25 Sep
'17
9:45 p.m.
Bakul Shah <bakul(a)bitblocks.com> wrote:
I think a few changes can make Unix much more plan9 like.
Things like: file descriptors are actually capabilities (or
handles, for short) and each process starts with a set of
handles and it can only reach those resources that its handles
allow. It can also gain new handles via operations on existing
handles. Right here you can see that a process is already
sandboxed. You don't need containers or jails!
You can opt-in to this way of working by using the capsicum API,
http://www.cl.cam.ac.uk/research/security/capsicum/
but that's really intended for programs to discipline themselves rather
than as something pervasive.
Tony.
--
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