in pathconf, -1, not 0, means unsupported.. syncio presumably works, too.
[musl] / src / errno /
2011-08-07 Rich Felkersimplify multi-threaded errno, eliminate useless functi...
2011-02-22 Rich Felkerchange errno to static linkage (improves PIC code gener...
2011-02-12 Rich Felkerinitial check-in, version 0.5.0