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From: Pawel Jakub Dawidek <pjd@FreeBSD.org>
Date: Sun, 16 Mar 2008 17:55:06 +0000 (UTC)
To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org
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Cc: 
Subject: cvs commit: src/sys/kern kern_resource.c
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pjd         2008-03-16 17:55:06 UTC

  FreeBSD src repository

  Modified files:
    sys/kern             kern_resource.c 
  Log:
  Fix information leak. We can find PIDs of running processes from within
  a jail, etc. by simply calling setpriority(PRIO_PROCESS, <PID>, 0) and
  checking the return value: 0 means that the process exists and -1 that
  it doesn't exist.
  
  Reviewed by:    rwatson
  MFC after:      1 week
  
  Revision  Changes    Path
  1.184     +2 -1      src/sys/kern/kern_resource.c