Allows easy tracing of daemons/applications in-situ
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libpretrace is a preload library that allows specified (dynamically linked) applications to always be executed under a debugging environment. To start using pretrace, add libpretrace.so to your /etc/ld.so.preload. root# echo /lib/libpretrace.so >> /etc/ld.so.preload You can now specify applications to trace in /etc/pretrace.conf, the format is one application per line, if you would like to specify a debugger append a colon, then the full path to the debugger and any arguments you would like to pass. If you do not specify a debugger, you get the default, strace, which saves the output to .logfile in the current working directory. An optional number can be appended in the format %N, eg %50, to specify what percentage of invocations should be traced. # this is a comment /full/path/to/application[%percent][:/full/path/to/debugger [arg1 arg2 ...]] An example pretrace.conf is provided with this distribution. After modifying pretrace.conf, you should execute ptgenmap to generate a new map file, this is used to quickly parse the configuration file with minimal impact on initialisation time. libpretrace is designed as a debugging utility for developers and auditors, and should not be used in a production environment. libpretrace is released under GPL version 2, and was created by Rob Holland and Tavis Ormandy of the Gentoo Linux Security Audit Team. firstname.lastname@example.org email@example.com April, 2005.