change adds validation for lima config values on start or create command

Signed-off-by: olalekan odukoya <odukoyaonline@gmail.com>

Author: olamilekan000

pkg/limayaml/validate.go

@@ -372,6 +372,44 @@ func Validate(y *LimaYAML, warn bool) error {
 		}
 	}
 
+	if y.Rosetta.Enabled != nil && *y.Rosetta.Enabled {
+		if *y.VMType != VZ {
+			return fmt.Errorf("field `rosetta.enabled` can only be enabled for VMType %q; got %q", VZ, *y.VMType)
+		}
+	}
+
+	if y.NestedVirtualization != nil && *y.NestedVirtualization {
+		if *y.VMType != VZ {
+			return fmt.Errorf("field `nestedVirtualization` can only be enabled for VMType %q; got %q", VZ, *y.VMType)
+		}
+	}
+
+	if y.MountType != nil {
+		if err := validateMountType(y); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+func validateMountType(y *LimaYAML) error {
+	validMountTypes := map[string]bool{
+		REVSSHFS: true,
+		NINEP:    true,
+		VIRTIOFS: true,
+	}
+
+	if !validMountTypes[*y.MountType] {
+		return fmt.Errorf("field `mountType` %s, valid options are: %s, %s, %s", *y.MountType, REVSSHFS, NINEP, VIRTIOFS)
+	}
+
+	if *y.MountType == VIRTIOFS && runtime.GOOS == "darwin" {
+		if y.VMType != nil && *y.VMType != VZ {
+			return fmt.Errorf("field `mountType` requires vmType 'vz' on macOS (darwin); got %s", *y.VMType)
+		}
+	}
+
 	return nil
 }
 
@@ -432,6 +470,9 @@ func validateNetwork(y *LimaYAML) error {
 				return fmt.Errorf("field `%s.macAddress` must be a 48 bit (6 bytes) MAC address; actual length of %q is %d bytes", field, nw.MACAddress, len(hw))
 			}
 		}
+		if nw.VZNAT != nil && *nw.VZNAT && *y.VMType != VZ {
+			return fmt.Errorf("field `%s.vzNAT` needs vmType set to vz; got %s", field, *y.VMType)
+		}
 		// FillDefault() will make sure that nw.Interface is not the empty string
 		if len(nw.Interface) >= 16 {
 			return fmt.Errorf("field `%s.interface` must be less than 16 bytes, but is %d bytes: %q", field, len(nw.Interface), nw.Interface)

pkg/limayaml/validate_test.go

@@ -186,3 +186,108 @@ func TestValidateParamIsUsed(t *testing.T) {
 		assert.Error(t, err, "field `param` key \"rootFul\" is not used in any provision, probe, copyToHost, or portForward")
 	}
 }
+
+func TestValidateRosetta(t *testing.T) {
+	images := `images: [{"location": "/"}]`
+
+	invalidRosetta := `
+rosetta:
+  enabled: true
+vmType: "qemu"
+`
+	y, err := Load([]byte(invalidRosetta+"\n"+images), "lima.yaml")
+	assert.NilError(t, err)
+
+	err = Validate(y, false)
+	assert.Error(t, err, "field `rosetta.enabled` can only be enabled for VMType \"vz\"; got \"qemu\"")
+
+	validRosetta := `
+rosetta:
+  enabled: true
+vmType: "vz"
+`
+	y, err = Load([]byte(validRosetta+"\n"+images), "lima.yaml")
+	assert.NilError(t, err)
+
+	err = Validate(y, false)
+	assert.NilError(t, err)
+
+	rosettaDisabled := `
+rosetta:
+  enabled: false
+vmType: "qemu"
+`
+	y, err = Load([]byte(rosettaDisabled+"\n"+images), "lima.yaml")
+	assert.NilError(t, err)
+
+	err = Validate(y, false)
+	assert.NilError(t, err)
+}
+
+func TestValidateNestedVirtualization(t *testing.T) {
+	images := `images: [{"location": "/"}]`
+
+	validYAML := `
+nestedVirtualization: true
+vmType: vz
+` + images
+
+	y, err := Load([]byte(validYAML), "lima.yaml")
+	assert.NilError(t, err)
+
+	err = Validate(y, false)
+	assert.NilError(t, err)
+
+	invalidYAML := `
+nestedVirtualization: true
+vmType: qemu
+` + images
+
+	y, err = Load([]byte(invalidYAML), "lima.yaml")
+	assert.NilError(t, err)
+
+	err = Validate(y, false)
+	assert.Error(t, err, "field `nestedVirtualization` can only be enabled for VMType \"vz\"; got \"qemu\"")
+}
+
+func TestValidateMountTypeOS(t *testing.T) {
+	images := `images: [{"location": "/"}]`
+
+	inValidMountTypeLinux := `
+mountType: "rMountType"
+`
+	y, err := Load([]byte(inValidMountTypeLinux+"\n"+images), "lima.yaml")
+	assert.NilError(t, err)
+
+	err = Validate(y, true)
+	assert.Error(t, err, "field `mountType` must be \"reverse-sshfs\" or \"9p\" or \"virtiofs\", or \"wsl2\", got \"rMountType\"")
+
+	validMountTypeLinux := `
+mountType: "virtiofs"
+`
+	y, err = Load([]byte(validMountTypeLinux+"\n"+images), "lima.yaml")
+	assert.NilError(t, err)
+
+	err = Validate(y, true)
+	assert.Error(t, err, "field `mountType` requires vmType 'vz' on macOS (darwin); got qemu")
+
+	validMountTypeMac := `
+mountType: "virtiofs"
+vmType: "vz"
+`
+	y, err = Load([]byte(validMountTypeMac+"\n"+images), "lima.yaml")
+	assert.NilError(t, err)
+
+	err = Validate(y, false)
+	assert.NilError(t, err)
+
+	invalidMountTypeMac := `
+mountType: "virtiofs"
+vmType: "qemu"
+`
+	y, err = Load([]byte(invalidMountTypeMac+"\n"+images), "lima.yaml")
+	assert.NilError(t, err)
+
+	err = Validate(y, false)
+	assert.Error(t, err, "field `mountType` requires vmType 'vz' on macOS (darwin); got qemu")
+}