Hi Tony. There are new security mechanisms in Mac OS X 10.11 El Capitan,
called System Integrity Protection, but I don't recognize this failure mode.
Try a stripped down example, like
$ echo 'int main () { }' > /tmp/a.c
$ xcrun clang /tmp/a.c -o /tmp/a.out
$ xcrun lldb /tmp/a.out
(lldb) br s -n main
(lldb) r
That should work. That's a baseline, then we can start working on why your
example isn't working.
> On Oct 2, 2015, at 2:35 PM, Tony Perrie via lldb-dev
> <lldb-dev@lists.llvm.org> wrote:
>
> I can only seem to debug our binary as the root user om 10.11. I rebooted at
> one point, and lldb did work briefly with a system user but then after the
> machine ran for a bit, it proceeded to not work again. Rebooted again, and
> again, lldb failes with this error...
>
> lldb /opt/aspera/bin/ascp
> (lldb) target create "/opt/aspera/bin/ascp"
> 2015-10-02 14:24:17.091 lldb[1721:12884] Metadata.framework [Error]: couldn't
> get the client port
> Current executable set to '/opt/aspera/bin/ascp' (x86_64).
> (lldb) r -i ~/.ssh/id_rsa /tmp/mp_source/* localhost:/tmp/mp_dest/
> error: process exited with status -1 (unable to attach)
>
> As root, I can reproduce the error:
>
> root# lldb /opt/aspera/bin/ascp
> (lldb) target create "/opt/aspera/bin/ascp"
> 2015-10-02 14:30:40.515 lldb[1864:14630] Metadata.framework [Error]: couldn't
> get the client port
> Current executable set to '/opt/aspera/bin/ascp' (x86_64).
> (lldb) r -i /var/root/.ssh/id_rsa /tmp/mp_source/* localhost:/tmp/mp_dest/
> Process 1866 launched: '/opt/aspera/bin/ascp' (x86_64)
>
> Session Stop (Error: Session initiation failed, Server process failed to
> start: permissions?)
> Process 1866 exited with status = 1 (0x00000001)
>
> I have another machine running OS X 10.9 and lldb where everything works
> flawlessly.
>
> The problem with out binary seems to be that OS X is prohibiting our binary
> from starting another process (even as root). Not sure if this is the right
> list for that question though. Assume it's something to do with 10.11's
> security model.
>
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