in pathconf, -1, not 0, means unsupported.. syncio presumably works, too.
[musl] / arch / i386 / reloc.h
2011-06-26 Rich Felkerfix some symbol resolution issues in dynamic linker
2011-06-25 Rich Felkerproper path searching for dynamic linker
2011-06-18 Rich Felkerexperimental dynamic linker!