Change the sandbox API to require passing in a copy of /proc instead of

Change the sandbox API to require passing in a copy of /proc instead of
/proc/self. This allows "SupportsSeccompSandbox()" to work correctly, even
after it had to "fork()". Otherwise, the old "/proc/self" would point to
the parent process, and some kernels don't allow accessing it from the
child (even though it is still a valid file descriptor; it just stops
working).

BUG=n/a
TEST=make test
Committed: https://code.google.com/p/seccompsandbox/source/detail?r=184

[Markus (顧孟勤), 2012-05-18 01:08:27]

This is a changelist in preparation for support BPF filters. We want to make
sure we have the same API for both the old and the new sandbox.

[jln (very slow on Chromium), 2012-05-18 01:30:35]

On 2012/05/18 01:08:27, Markus (顧孟勤) wrote:
> This is a changelist in preparation for support BPF filters. We want to make
> sure we have the same API for both the old and the new sandbox.

LGTM