From owner-cvs-all  Sat Apr  6 20:48: 4 2002
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From: Dima Dorfman <dd@FreeBSD.org>
Date: Sat, 6 Apr 2002 20:47:58 -0800 (PST)
To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: cvs commit: src/lib/libkvm kvm_proc.c
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dd          2002/04/06 20:47:58 PST

  Modified files:
    lib/libkvm           kvm_proc.c 
  Log:
  Fix (for the second time) kvm_getprocs() for the case where no
  processes match the given criteria.  Since revision 1.60 of malloc.c,
  malloc() and friends return an invalid pointer when given a size of 0.
  kvm_getprocs() uses sysctl() with a NULL oldp argument to get an
  initial size, but does not check whether it's 0 before passing it to
  realloc() (via _kvm_realloc()).  Before the aforementioned malloc()
  change, this resulted in a minimal allocation made and a valid poitner
  returned, but now results in an invalid, but non-NULL, pointer being
  returned.  When this is passed to sysctl(), the latter returns EFAULT
  (as it should).
  
  Revision  Changes    Path
  1.46      +26 -0     src/lib/libkvm/kvm_proc.c

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