[Bug tapsets/6762] Some syscalls functions just wrappers for other syscalls

[fche at redhat dot com]

------- Additional Comments From fche at redhat dot com  2008-10-20 16:50 -------
One possible fix is to extend the syscalls tapset thusly:

# add someplace
global syscall_inplay
probe process.syscall { syscall_inplay[tid()] = $syscall }
probe process.syscall.return { delete syscall_inplay[tid()] }
probe process.thread.end { delete syscall_inplay[tid()] }

# then for each "nestable" system call handler
probe syscall.faccessat = kernel.function(" ...") {
   if (syscall_inplay[tid()]) next;
}


Alternately, one can instrument just the "nester" and "nestee" probe
pairs with similar logic, without general system-wide utrace syscall
probes.


Alternately, one can kludge the test case to accept and ignore such
nesting.  :-(


-- 


http://sourceware.org/bugzilla/show_bug.cgi?id=6762

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