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From: Xin LI <delphij@FreeBSD.org>
Date: Sat, 28 Mar 2009 04:00:46 +0000 (UTC)
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Subject: cvs commit: src/lib/libc/db README src/lib/libc/db/btree bt_open.c
 bt_split.c src/lib/libc/db/hash hash_buf.c src/lib/libc/db/mpool
 mpool.c
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delphij     2009-03-28 04:00:46 UTC

  FreeBSD src repository

  Modified files:
    lib/libc/db          README 
    lib/libc/db/btree    bt_open.c bt_split.c 
    lib/libc/db/hash     hash_buf.c 
    lib/libc/db/mpool    mpool.c 
  Log:
  SVN rev 190482 on 2009-03-28 04:00:46Z by delphij
  
  When allocating memory, zero out them if we don't intend to overwrite them
  all; before freeing memory, zero out them before we release it as free
  heap.  This will eliminate some potential information leak issue.
  
  While there, remove the PURIFY option.  There is a slight difference between
  the new behavior and the old -DPURIFY behavior, with the latter initializes
  memory with 0xff's.  The difference between old and new approach does not
  generate observable difference.
  
  Obtained from:  OpenBSD (partly).
  
  Revision  Changes    Path
  1.2       +1 -7      src/lib/libc/db/README
  1.16      +2 -4      src/lib/libc/db/btree/bt_open.c
  1.11      +1 -4      src/lib/libc/db/btree/bt_split.c
  1.10      +6 -9      src/lib/libc/db/hash/hash_buf.c
  1.16      +1 -4      src/lib/libc/db/mpool/mpool.c