Messages in this thread | | | Date | Sat, 26 Jul 1997 07:53:25 +0200 | From | Harald Koenig <> | Subject | trace for shared lib calles ? |
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Hi,
is there an easy way to trace some/all calls to a shared lib (if possible without hacking the lib sources and add warppers there) similar to "strace" for system calls ?
if there is no such tool/method available, I'd like to write wrapper functions which can be preloaded using LD_PPRELOAD which should call the functions in he original library then and generaet the "ltrace" output.
but how do I create e.g. a function "malloc" for the preload/wrapper library which then should call "malloc" from the real shared libc without generating a recursive call to itself (the wrapper function) ?
thanks for any hints...
Harald
PS: for now it would be possible to hack the according lib sources to add code (if someone has tools for this for libc or similar...) but I'd prefer a binary-only solution to be able to trace libs without sources (e.g. libXm.2) too! -- All SCSI disks will from now on ___ _____ be required to send an email notice 0--,| /OOOOOOO\ 24 hours prior to complete hardware failure! <_/ / /OOOOOOOOOOO\ \ \/OOOOOOOOOOOOOOO\ \ OOOOOOOOOOOOOOOOO|// Harald Koenig, \/\/\/\/\/\/\/\/\/ Inst.f.Theoret.Astrophysik // / \\ \ koenig@tat.physik.uni-tuebingen.de ^^^^^ ^^^^^
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