mknodat
__weak_alias(mknodat,rump___sysimpl_mknodat);
int mknodat(int, const char *, mode_t, dev_t);
ATF_REQUIRE(mknodat(dfd, BASEFIFO, mode, 0) != -1);
ATF_REQUIRE((fd = mknodat(AT_FDCWD, FILE, mode, dev)) != -1);
ATF_REQUIRE((fd = mknodat(AT_FDCWD, FILEERR, mode, dev)) == -1);
ATF_REQUIRE((fd = mknodat(-1, FILE, mode, dev)) == -1);
ATF_REQUIRE((fd = mknodat(dfd, BASEFILE, mode, dev)) != -1);