machine: make more use of strongunits

To make it very clear in the code what unit the uint represents.

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

cmd/podman/machine/set.go

@@ -117,15 +117,16 @@ func setMachine(cmd *cobra.Command, args []string) error {
 		setOpts.CPUs = &mc.Resources.CPUs
 	}
 	if cmd.Flags().Changed("memory") {
-		mc.Resources.Memory = setFlags.Memory
+		mc.Resources.Memory = strongunits.MiB(setFlags.Memory)
 		setOpts.Memory = &mc.Resources.Memory
 	}
 	if cmd.Flags().Changed("disk-size") {
-		if setFlags.DiskSize <= mc.Resources.DiskSize {
+		newDiskSizeGB := strongunits.GiB(setFlags.DiskSize)
+		if newDiskSizeGB <= mc.Resources.DiskSize {
 			return fmt.Errorf("new disk size must be larger than %d GB", mc.Resources.DiskSize)
 		}
-		mc.Resources.DiskSize = setFlags.DiskSize
+		mc.Resources.DiskSize = newDiskSizeGB
-		newDiskSizeGB := strongunits.GiB(setFlags.DiskSize)
+
 		setOpts.DiskSize = &newDiskSizeGB
 	}
 	if cmd.Flags().Changed("user-mode-networking") {

pkg/machine/applehv/stubber.go

@@ -11,7 +11,6 @@ import (
 	"time"
 
 	"github.com/containers/common/pkg/config"
-	"github.com/containers/common/pkg/strongunits"
 	gvproxy "github.com/containers/gvisor-tap-vsock/pkg/types"
 	"github.com/containers/podman/v5/pkg/machine"
 	"github.com/containers/podman/v5/pkg/machine/applehv/vfkit"
@@ -55,7 +54,7 @@ func (a AppleHVStubber) CreateVM(opts define.CreateVMOpts, mc *vmconfigs.Machine
 	mc.AppleHypervisor = new(vmconfigs.AppleHVConfig)
 	mc.AppleHypervisor.Vfkit = vfkit.VfkitHelper{}
 	bl := vfConfig.NewEFIBootloader(fmt.Sprintf("%s/efi-bl-%s", opts.Dirs.DataDir.GetPath(), opts.Name), true)
-	mc.AppleHypervisor.Vfkit.VirtualMachine = vfConfig.NewVirtualMachine(uint(mc.Resources.CPUs), mc.Resources.Memory, bl)
+	mc.AppleHypervisor.Vfkit.VirtualMachine = vfConfig.NewVirtualMachine(uint(mc.Resources.CPUs), uint64(mc.Resources.Memory), bl)
 
 	randPort, err := utils.GetRandomPort()
 	if err != nil {
@@ -71,7 +70,7 @@ func (a AppleHVStubber) CreateVM(opts define.CreateVMOpts, mc *vmconfigs.Machine
 	// Populate the ignition file with virtiofs stuff
 	ignBuilder.WithUnit(generateSystemDFilesForVirtiofsMounts(virtiofsMounts)...)
 
-	return resizeDisk(mc, strongunits.GiB(mc.Resources.DiskSize))
+	return resizeDisk(mc, mc.Resources.DiskSize)
 }
 
 func (a AppleHVStubber) Exists(name string) (bool, error) {
@@ -164,7 +163,7 @@ func (a AppleHVStubber) StartVM(mc *vmconfigs.MachineConfig) (func() error, func
 
 	// create a one-time virtual machine for starting because we dont want all this information in the
 	// machineconfig if possible.  the preference was to derive this stuff
-	vm := vfConfig.NewVirtualMachine(uint(mc.Resources.CPUs), mc.Resources.Memory, mc.AppleHypervisor.Vfkit.VirtualMachine.Bootloader)
+	vm := vfConfig.NewVirtualMachine(uint(mc.Resources.CPUs), uint64(mc.Resources.Memory), mc.AppleHypervisor.Vfkit.VirtualMachine.Bootloader)
 
 	defaultDevices, readySocket, err := getDefaultDevices(mc)
 	if err != nil {

pkg/machine/define/setopts.go

@@ -5,7 +5,7 @@ import "github.com/containers/common/pkg/strongunits"
 type SetOptions struct {
 	CPUs               *uint64
 	DiskSize           *strongunits.GiB
-	Memory             *uint64
+	Memory             *strongunits.MiB
 	Rootful            *bool
 	UserModeNetworking *bool
 	USBs               *[]string

pkg/machine/e2e/init_test.go

@@ -94,7 +94,7 @@ var _ = Describe("podman machine init", func() {
 		Expect(testMachine.Name).To(Equal(mb.names[0]))
 		if testProvider.VMType() != define.WSLVirt { // WSL hardware specs are hardcoded
 			Expect(testMachine.Resources.CPUs).To(Equal(uint64(cpus)))
-			Expect(testMachine.Resources.Memory).To(Equal(uint64(2048)))
+			Expect(testMachine.Resources.Memory).To(BeEquivalentTo(uint64(2048)))
 		}
 	})
 
@@ -150,7 +150,7 @@ var _ = Describe("podman machine init", func() {
 		Expect(testMachine.Name).To(Equal(mb.names[0]))
 		if testProvider.VMType() != define.WSLVirt { // memory and cpus something we cannot set with WSL
 			Expect(testMachine.Resources.CPUs).To(Equal(uint64(cpus)))
-			Expect(testMachine.Resources.Memory).To(Equal(uint64(2048)))
+			Expect(testMachine.Resources.Memory).To(BeEquivalentTo(uint64(2048)))
 		}
 		Expect(testMachine.SSHConfig.RemoteUsername).To(Equal(remoteUsername))
 

pkg/machine/hyperv/stubber.go

@@ -53,8 +53,8 @@ func (h HyperVStubber) CreateVM(opts define.CreateVMOpts, mc *vmconfigs.MachineC
 	hwConfig := hypervctl.HardwareConfig{
 		CPUs:     uint16(mc.Resources.CPUs),
 		DiskPath: mc.ImagePath.GetPath(),
-		DiskSize: mc.Resources.DiskSize,
+		DiskSize: uint64(mc.Resources.DiskSize),
-		Memory:   mc.Resources.Memory,
+		Memory:   uint64(mc.Resources.Memory),
 	}
 
 	networkHVSock, err := vsock.NewHVSockRegistryEntry(mc.Name, vsock.Network)
@@ -120,7 +120,7 @@ func (h HyperVStubber) CreateVM(opts define.CreateVMOpts, mc *vmconfigs.MachineC
 	}
 
 	callbackFuncs.Add(vmRemoveCallback)
-	err = resizeDisk(strongunits.GiB(mc.Resources.DiskSize), mc.ImagePath)
+	err = resizeDisk(mc.Resources.DiskSize, mc.ImagePath)
 	return err
 }
 
@@ -337,9 +337,10 @@ func (h HyperVStubber) SetProviderAttrs(mc *vmconfigs.MachineConfig, opts define
 		}, func(ms *hypervctl.MemorySettings) {
 			if memoryChanged {
 				ms.DynamicMemoryEnabled = false
-				ms.VirtualQuantity = *opts.Memory
+				mem := uint64(*opts.Memory)
-				ms.Limit = *opts.Memory
+				ms.VirtualQuantity = mem
-				ms.Reservation = *opts.Memory
+				ms.Limit = mem
+				ms.Reservation = mem
 			}
 		})
 		if err != nil {

pkg/machine/qemu/command/command.go

@@ -10,6 +10,7 @@ import (
 	"strconv"
 	"time"
 
+	"github.com/containers/common/pkg/strongunits"
 	"github.com/containers/podman/v5/pkg/machine/define"
 )
 
@@ -32,8 +33,9 @@ func NewQemuBuilder(binary string, options []string) QemuCmd {
 }
 
 // SetMemory adds the specified amount of memory for the machine
-func (q *QemuCmd) SetMemory(m uint64) {
+func (q *QemuCmd) SetMemory(m strongunits.MiB) {
-	*q = append(*q, "-m", strconv.FormatUint(m, 10))
+	// qemu accepts the memory in MiB
+	*q = append(*q, "-m", strconv.FormatUint(uint64(m), 10))
 }
 
 // SetCPUs adds the number of CPUs the machine will have

pkg/machine/qemu/stubber.go

@@ -116,7 +116,7 @@ func (q *QEMUStubber) CreateVM(opts define.CreateVMOpts, mc *vmconfigs.MachineCo
 
 	mc.QEMUHypervisor = &qemuConfig
 	mc.QEMUHypervisor.QEMUPidPath = qemuPidPath
-	return q.resizeDisk(strongunits.GiB(mc.Resources.DiskSize), mc.ImagePath)
+	return q.resizeDisk(mc.Resources.DiskSize, mc.ImagePath)
 }
 
 func runStartVMCommand(cmd *exec.Cmd) error {

pkg/machine/shim/host.go

@@ -10,7 +10,6 @@ import (
 	"strings"
 	"time"
 
-	"github.com/containers/common/pkg/strongunits"
 	"github.com/containers/podman/v5/pkg/machine"
 	"github.com/containers/podman/v5/pkg/machine/connection"
 	machineDefine "github.com/containers/podman/v5/pkg/machine/define"
@@ -53,8 +52,8 @@ func List(vmstubbers []vmconfigs.VMProvider, _ machine.ListOptions) ([]*machine.
 				//Stream:             "", // No longer applicable
 				VMType:             s.VMType().String(),
 				CPUs:               mc.Resources.CPUs,
-				Memory:             strongunits.MiB(mc.Resources.Memory),
+				Memory:             mc.Resources.Memory,
-				DiskSize:           strongunits.GiB(mc.Resources.DiskSize),
+				DiskSize:           mc.Resources.DiskSize,
 				Port:               mc.SSH.Port,
 				RemoteUsername:     mc.SSH.RemoteUsername,
 				IdentityPath:       mc.SSH.IdentityPath,

pkg/machine/vmconfigs/config.go

@@ -3,6 +3,7 @@ package vmconfigs
 import (
 	"time"
 
+	"github.com/containers/common/pkg/strongunits"
 	gvproxy "github.com/containers/gvisor-tap-vsock/pkg/types"
 	"github.com/containers/podman/v5/pkg/machine/define"
 	"github.com/containers/podman/v5/pkg/machine/ignition"
@@ -124,9 +125,9 @@ type ResourceConfig struct {
 	// CPUs to be assigned to the VM
 	CPUs uint64
 	// Disk size in gigabytes assigned to the vm
-	DiskSize uint64
+	DiskSize strongunits.GiB
 	// Memory in megabytes assigned to the vm
-	Memory uint64
+	Memory strongunits.MiB
 	// Usbs
 	USBs []define.USBConfig
 }

pkg/machine/vmconfigs/machine.go

@@ -10,6 +10,7 @@ import (
 	"strings"
 	"time"
 
+	"github.com/containers/common/pkg/strongunits"
 	define2 "github.com/containers/podman/v5/libpod/define"
 	"github.com/containers/podman/v5/pkg/errorhandling"
 	"github.com/containers/podman/v5/pkg/machine/connection"
@@ -72,8 +73,8 @@ func NewMachineConfig(opts define.InitOptions, dirs *define.MachineDirs, sshIden
 	// System Resources
 	mrc := ResourceConfig{
 		CPUs:     opts.CPUS,
-		DiskSize: opts.DiskSize,
+		DiskSize: strongunits.GiB(opts.DiskSize),
-		Memory:   opts.Memory,
+		Memory:   strongunits.MiB(opts.Memory),
 		USBs:     usbs,
 	}
 	mc.Resources = mrc

pkg/machine/wsl/machine.go

@@ -15,6 +15,7 @@ import (
 	"time"
 
 	"github.com/containers/common/pkg/config"
+	"github.com/containers/common/pkg/strongunits"
 	"github.com/containers/podman/v5/pkg/machine"
 	"github.com/containers/podman/v5/pkg/machine/define"
 	"github.com/containers/podman/v5/pkg/machine/env"
@@ -702,7 +703,7 @@ func isRunning(name string) (bool, error) {
 }
 
 //nolint:unused
-func getDiskSize(name string) uint64 {
+func getDiskSize(name string) strongunits.GiB {
 	vmDataDir, err := env.GetDataDir(vmtype)
 	if err != nil {
 		return 0
@@ -713,7 +714,7 @@ func getDiskSize(name string) uint64 {
 	if err != nil {
 		return 0
 	}
-	return uint64(info.Size())
+	return strongunits.ToGiB(strongunits.B(info.Size()))
 }
 
 //nolint:unused
@@ -742,7 +743,7 @@ func getCPUs(name string) (uint64, error) {
 }
 
 //nolint:unused
-func getMem(name string) (uint64, error) {
+func getMem(name string) (strongunits.MiB, error) {
 	dist := machine.ToDist(name)
 	if run, _ := isWSLRunning(dist); !run {
 		return 0, nil
@@ -761,13 +762,14 @@ func getMem(name string) (uint64, error) {
 		t, a             int
 	)
 	for scanner.Scan() {
+		// fields are in kB so div to mb
 		fields := strings.Fields(scanner.Text())
 		if strings.HasPrefix(fields[0], "MemTotal") && len(fields) >= 2 {
 			t, err = strconv.Atoi(fields[1])
-			total = uint64(t) * 1024
+			total = uint64(t) / 1024
 		} else if strings.HasPrefix(fields[0], "MemAvailable") && len(fields) >= 2 {
 			a, err = strconv.Atoi(fields[1])
-			available = uint64(a) * 1024
+			available = uint64(a) / 1024
 		}
 		if err != nil {
 			break
@@ -775,7 +777,7 @@ func getMem(name string) (uint64, error) {
 	}
 	_ = cmd.Wait()
 
-	return total - available, err
+	return strongunits.MiB(total - available), err
 }
 
 //nolint:unused