test_file_write
ATF_REQUIRE(test_file_write(fd) == ENOTCAPABLE);
ATF_REQUIRE(test_file_write(fd) == 0);
ATF_REQUIRE(test_file_write(fd) == 0);
ATF_REQUIRE(test_file_write(fd) == ENOTCAPABLE);
ATF_REQUIRE(test_file_write(fd) == ENOTCAPABLE);