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Log and report rtld error messages via utrace(2)/ktrace(1).
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Authored by peterj on Jan 26 2017, 7:27 AM.

Details

Summary

Extend LD_UTRACE by also generating utrace(2) log events for runtime linker
errors.

MFC after: 1 week

Test Plan

Compile the following code and execute with

LD_UTRACE=yes ktrace ./a.out ; kdump -t u

Note the inclusion of error messages.


#include <dlfcn.h>
#include <err.h>
#include <stdio.h>

int main(int argc, char **argv)
{

if (dlsym(NULL, "symbol_missing") != NULL)
   errx(1, "Found unexpected symbol");
return (0);

}

Diff Detail

Repository
rS FreeBSD src repository - subversion
Lint
Automatic diff as part of commit; lint not applicable.
Unit
Automatic diff as part of commit; unit tests not applicable.

Event Timeline

peterj retitled this revision from to Log and report rtld error messages via utrace(2)/ktrace(1)..
peterj updated this object.
peterj edited the test plan for this revision. (Show Details)
peterj added reviewers: kib, jhb.
kib edited edge metadata.
This revision is now accepted and ready to land.Jan 26 2017, 11:20 AM
jhb edited edge metadata.