[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.3-37-ga575167

[SCM] systemtap: system-wide probe/trace tool branch, master, updated. release-1.3-37-ga575167

[jistone]

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- Log -----------------------------------------------------------------
commit a5751672ae06f66a5ce28efab17e406af535adfa
Author: Josh Stone <jistone@redhat.com>
Date:   Fri Aug 6 10:55:32 2010 -0700

    Ignore empty files in the cache
    
    Sometimes crashes can leave just-written files at zero length, so we
    should be a little paranoid that our cached files are ok.  The stapconf
    header is especially vulnerable, as it will prevent all scripts from
    being compiled if it gets bad.
    
    * util.cxx (get_file_size(int)): Read the size from a file descriptor.
    * cache.cxx (get_stapconf_from_cache, get_script_from_cache): Check that
      cached files are non-empty before using them.

-----------------------------------------------------------------------

Summary of changes:
 cache.cxx |    9 ++++++---
 util.cxx  |   12 ++++++++++++
 util.h    |    1 +
 3 files changed, 19 insertions(+), 3 deletions(-)


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