symlinkat
int symlinkat(const char *oldPath, int fd, const char *newPath);
extern int symlinkat(const char *toPath, int fd, const char *symlinkPath);
if (symlinkat(symlinkPath != NULL ? symlinkPath : "", parentFD,
return symlinkat(toPath, fd, symlinkPath);
HIDDEN_FUNCTION(symlinkat);
return symlinkat(toPath, AT_FDCWD, symlinkPath);