[logs] EventLog 0.1.2

bazsiat_private

Hi,

I have released version 0.1.2 from EventLog which has the following
important changes:

NEWS for the 0.1.2 release
        Fri, 10 Jan 2003 10:15:48 +0100

        Added two implementations of the syslog wrapper (macro and dlsym
        based).

        The dlsym() based can be enabled by configure-ing with the
        --enable-dlsym-wrapper option.

        The macro based can be used by defining the symbol
        EVENTLOG_SYSLOG_MACROS preprocessor symbol prior to including
        evtlog.h.

Additionally a couple of documentation updates was performed. The whole
library was relicensed under the terms of a BSD-like license was performed.

The library is available at

http://www.balabit.hu/downloads/eventlog/0.1/src

A more detailed description of the syslog wrapper is below:

Syslog compatibility
--------------------

Most UNIX systems and therefore the programs running under UNIX use the
syslog() API found in the libc for logging. Because of the large installed
base it is worth supporting legacy applications before they are converted to
use EventLog.

Two different implementations of syslog compatibility is provided: macro and
linker based.

* Macro based compatibility

  This works by defining the syslog() function names as macros to refer to 
  the compatibility functions found in EventLog. To use the macro based
  wrapper you will need to recompile the program from source:

    $ cc -DEVENTLOG_SYSLOG_MACROS syslogapp.c -levtlog

* Linker based compatibility

  Some dynamic linker implementations (most notably: Linux and Solaris)   
  support symbol overloading. EventLog can use this feature if the dlsym()
  function is present which supports RTLD_NEXT to fetch symbols hidden by
  EventLog itself.

  To enable this wrapper configure EventLog with the --enable-dlsym-wrapper
  configure option. To use the wrapper you simply need to preload the
  event log shared object like:

   $ LD_PRELOAD=/usr/lib/libeventlog.so.0 syslogapp

  Where syslogapp is the program to be run. As you can see the application
  itself did not need to be recompiled.

-- 
Bazsi
PGP info: KeyID 9AF8D0A9 Fingerprint CD27 CFB0 802C 0944 9CFD 804E C82C 8EB1
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