I wanted to have Assp running as the assp user on Mac OS X and in one
of the recent updates it broke with an error of 'setruid() not
implemented at assp.pl line 2033'. The offending line is this (in the
subroutine switchUsers):
$<=$uid; $>=$uid; $<=$uid; $>=$uid;
A bit of Googling found this message here: http://groups.google.com/
group/comp.lang.perl.misc/browse_thread/thread/9beeaa638ba83213/
dba793905626ca75%23dba793905626ca75
The upshot is that setruid() is depreciated (and apparently now
removed from Mac OS X) and so this line which Perl runs the first bit
is interpreted as trying to change the real uid without changing the
effective uid. It does this using the depreciated setruid() function
call and then dies.
However as you can see from the next bit in the line, we actually
want to change the effective uid as well so this whole line can
simply be replaced with:
$< = $> = $uid;
And no more errors on launch!
I am not a Perl expert, and so I cannot say if this change will have
an unexpected effect beyond setting the User ID as expected, but it
works well for me on both Mac OS X 10.3.9 and 10.4.10.
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