Robert Watson eb9e5c1d72 o Reduce information leakage into jails by adding invocations of
p_can(...P_CAN_SEE...) to getpgid(), getsid(), and setpgid(),
  blocking these operations on processes that should not be visible
  by the requesting process.  Required to reduce information leakage
  in MAC environments.

Obtained from:	TrustedBSD Project
2001-04-12 19:39:00 +00:00
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