Check integration test requirements using daemon

When running against a remote daemon, we cannot use the local
filesystem to determine configuration.

Signed-off-by: Christopher Crone <christopher.crone@docker.com>

integration-cli/docker_cli_run_unix_test.go

@@ -677,7 +677,7 @@ func (s *DockerSuite) TestRunWithSwappinessInvalid(c *check.C) {
 }
 
 func (s *DockerSuite) TestRunWithMemoryReservation(c *check.C) {
-	testRequires(c, memoryReservationSupport)
+	testRequires(c, SameHostDaemon, memoryReservationSupport)
 
 	file := "/sys/fs/cgroup/memory/memory.soft_limit_in_bytes"
 	out, _ := dockerCmd(c, "run", "--memory-reservation", "200M", "--name", "test", "busybox", "cat", file)
@@ -689,7 +689,7 @@ func (s *DockerSuite) TestRunWithMemoryReservation(c *check.C) {
 
 func (s *DockerSuite) TestRunWithMemoryReservationInvalid(c *check.C) {
 	testRequires(c, memoryLimitSupport)
-	testRequires(c, memoryReservationSupport)
+	testRequires(c, SameHostDaemon, memoryReservationSupport)
 	out, _, err := dockerCmdWithError("run", "-m", "500M", "--memory-reservation", "800M", "busybox", "true")
 	c.Assert(err, check.NotNil)
 	expected := "Minimum memory limit can not be less than memory reservation limit"
@@ -1401,7 +1401,7 @@ func (s *DockerSuite) TestRunDeviceSymlink(c *check.C) {
 
 // TestRunPIDsLimit makes sure the pids cgroup is set with --pids-limit
 func (s *DockerSuite) TestRunPIDsLimit(c *check.C) {
-	testRequires(c, pidsLimit)
+	testRequires(c, SameHostDaemon, pidsLimit)
 
 	file := "/sys/fs/cgroup/pids/pids.max"
 	out, _ := dockerCmd(c, "run", "--name", "skittles", "--pids-limit", "4", "busybox", "cat", file)

integration-cli/docker_cli_update_unix_test.go

@@ -14,7 +14,6 @@ import (
 	"github.com/docker/docker/client"
 	"github.com/docker/docker/integration-cli/checker"
 	"github.com/docker/docker/integration-cli/request"
-	"github.com/docker/docker/pkg/parsers/kernel"
 	"github.com/go-check/check"
 	"github.com/kr/pty"
 )
@@ -139,7 +138,7 @@ func (s *DockerSuite) TestUpdateKernelMemory(c *check.C) {
 func (s *DockerSuite) TestUpdateKernelMemoryUninitialized(c *check.C) {
 	testRequires(c, DaemonIsLinux, kernelMemorySupport)
 
-	isNewKernel := kernel.CheckKernelVersion(4, 6, 0)
+	isNewKernel := CheckKernelVersion(4, 6, 0)
 	name := "test-update-container"
 	dockerCmd(c, "run", "-d", "--name", name, "busybox", "top")
 	_, _, err := dockerCmdWithError("update", "--kernel-memory", "100M", name)

integration-cli/requirements_unix_test.go

@@ -18,19 +18,19 @@ var (
 )
 
 func cpuCfsPeriod() bool {
-	return SysInfo.CPUCfsPeriod
+	return testEnv.DaemonInfo.CPUCfsPeriod
 }
 
 func cpuCfsQuota() bool {
-	return SysInfo.CPUCfsQuota
+	return testEnv.DaemonInfo.CPUCfsQuota
 }
 
 func cpuShare() bool {
-	return SysInfo.CPUShares
+	return testEnv.DaemonInfo.CPUShares
 }
 
 func oomControl() bool {
-	return SysInfo.OomKillDisable
+	return testEnv.DaemonInfo.OomKillDisable
 }
 
 func pidsLimit() bool {
@@ -38,11 +38,11 @@ func pidsLimit() bool {
 }
 
 func kernelMemorySupport() bool {
-	return SysInfo.KernelMemory
+	return testEnv.DaemonInfo.KernelMemory
 }
 
 func memoryLimitSupport() bool {
-	return SysInfo.MemoryLimit
+	return testEnv.DaemonInfo.MemoryLimit
 }
 
 func memoryReservationSupport() bool {
@@ -50,19 +50,19 @@ func memoryReservationSupport() bool {
 }
 
 func swapMemorySupport() bool {
-	return SysInfo.SwapLimit
+	return testEnv.DaemonInfo.SwapLimit
 }
 
 func memorySwappinessSupport() bool {
-	return SysInfo.MemorySwappiness
+	return SameHostDaemon() && SysInfo.MemorySwappiness
 }
 
 func blkioWeight() bool {
-	return SysInfo.BlkioWeight
+	return SameHostDaemon() && SysInfo.BlkioWeight
 }
 
 func cgroupCpuset() bool {
-	return SysInfo.Cpuset
+	return testEnv.DaemonInfo.CPUSet
 }
 
 func seccompEnabled() bool {
@@ -111,5 +111,7 @@ func overlay2Supported() bool {
 }
 
 func init() {
-	SysInfo = sysinfo.New(true)
+	if SameHostDaemon() {
+		SysInfo = sysinfo.New(true)
+	}
 }

integration-cli/utils_test.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/client"
+	"github.com/docker/docker/pkg/parsers/kernel"
 	"github.com/docker/docker/pkg/stringutils"
 	"github.com/go-check/check"
 	"github.com/gotestyourself/gotestyourself/icmd"
@@ -194,3 +195,19 @@ func NewEnvClientWithVersion(version string) (*client.Client, error) {
 	cli.NegotiateAPIVersionPing(types.Ping{APIVersion: version})
 	return cli, nil
 }
+
+// GetKernelVersion gets the current kernel version.
+func GetKernelVersion() *kernel.VersionInfo {
+	v, _ := kernel.ParseRelease(testEnv.DaemonInfo.KernelVersion)
+	return v
+}
+
+// CheckKernelVersion checks if current kernel is newer than (or equal to)
+// the given version.
+func CheckKernelVersion(k, major, minor int) bool {
+	v := GetKernelVersion()
+	if kernel.CompareKernelVersion(*v, kernel.VersionInfo{Kernel: k, Major: major, Minor: minor}) < 0 {
+		return false
+	}
+	return true
+}