diff options
author | dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com> | 2020-12-23 09:17:35 +0000 |
---|---|---|
committer | Daniel J Walsh <dwalsh@redhat.com> | 2020-12-23 04:29:57 -0500 |
commit | 057faea5c185d24cda40d310b0a80763ee46f4cc (patch) | |
tree | 148844953c6a27c11313175c7c9cd6625152a371 /vendor/github.com/Microsoft/hcsshim/computestorage/helpers.go | |
parent | 07663f74c48d11732a3330248f837d5abf86fe9c (diff) | |
download | podman-057faea5c185d24cda40d310b0a80763ee46f4cc.tar.gz podman-057faea5c185d24cda40d310b0a80763ee46f4cc.tar.bz2 podman-057faea5c185d24cda40d310b0a80763ee46f4cc.zip |
Bump github.com/containers/storage from 1.24.3 to 1.24.4
Bumps [github.com/containers/storage](https://github.com/containers/storage) from 1.24.3 to 1.24.4.
- [Release notes](https://github.com/containers/storage/releases)
- [Changelog](https://github.com/containers/storage/blob/master/docs/containers-storage-changes.md)
- [Commits](https://github.com/containers/storage/compare/v1.24.3...v1.24.4)
Signed-off-by: dependabot-preview[bot] <support@dependabot.com>
Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
Diffstat (limited to 'vendor/github.com/Microsoft/hcsshim/computestorage/helpers.go')
-rw-r--r-- | vendor/github.com/Microsoft/hcsshim/computestorage/helpers.go | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/vendor/github.com/Microsoft/hcsshim/computestorage/helpers.go b/vendor/github.com/Microsoft/hcsshim/computestorage/helpers.go new file mode 100644 index 000000000..d31efd660 --- /dev/null +++ b/vendor/github.com/Microsoft/hcsshim/computestorage/helpers.go @@ -0,0 +1,197 @@ +package computestorage + +import ( + "context" + "os" + "path/filepath" + "syscall" + + "github.com/Microsoft/go-winio/pkg/security" + "github.com/Microsoft/go-winio/vhd" + "github.com/pkg/errors" + "golang.org/x/sys/windows" +) + +const defaultVHDXBlockSizeInMB = 1 + +// SetupContainerBaseLayer is a helper to setup a containers scratch. It +// will create and format the vhdx's inside and the size is configurable with the sizeInGB +// parameter. +// +// `layerPath` is the path to the base container layer on disk. +// +// `baseVhdPath` is the path to where the base vhdx for the base layer should be created. +// +// `diffVhdPath` is the path where the differencing disk for the base layer should be created. +// +// `sizeInGB` is the size in gigabytes to make the base vhdx. +func SetupContainerBaseLayer(ctx context.Context, layerPath, baseVhdPath, diffVhdPath string, sizeInGB uint64) (err error) { + var ( + hivesPath = filepath.Join(layerPath, "Hives") + layoutPath = filepath.Join(layerPath, "Layout") + ) + + // We need to remove the hives directory and layout file as `SetupBaseOSLayer` fails if these files + // already exist. `SetupBaseOSLayer` will create these files internally. We also remove the base and + // differencing disks if they exist in case we're asking for a different size. + if _, err := os.Stat(hivesPath); err == nil { + if err := os.RemoveAll(hivesPath); err != nil { + return errors.Wrap(err, "failed to remove prexisting hives directory") + } + } + if _, err := os.Stat(layoutPath); err == nil { + if err := os.RemoveAll(layoutPath); err != nil { + return errors.Wrap(err, "failed to remove prexisting layout file") + } + } + + if _, err := os.Stat(baseVhdPath); err == nil { + if err := os.RemoveAll(baseVhdPath); err != nil { + return errors.Wrap(err, "failed to remove base vhdx path") + } + } + if _, err := os.Stat(diffVhdPath); err == nil { + if err := os.RemoveAll(diffVhdPath); err != nil { + return errors.Wrap(err, "failed to remove differencing vhdx") + } + } + + createParams := &vhd.CreateVirtualDiskParameters{ + Version: 2, + Version2: vhd.CreateVersion2{ + MaximumSize: sizeInGB * 1024 * 1024 * 1024, + BlockSizeInBytes: defaultVHDXBlockSizeInMB * 1024 * 1024, + }, + } + handle, err := vhd.CreateVirtualDisk(baseVhdPath, vhd.VirtualDiskAccessNone, vhd.CreateVirtualDiskFlagNone, createParams) + if err != nil { + return errors.Wrap(err, "failed to create vhdx") + } + + defer func() { + if err != nil { + syscall.CloseHandle(handle) + os.RemoveAll(baseVhdPath) + if os.Stat(diffVhdPath); err == nil { + os.RemoveAll(diffVhdPath) + } + } + }() + + if err = FormatWritableLayerVhd(ctx, windows.Handle(handle)); err != nil { + return err + } + // Base vhd handle must be closed before calling SetupBaseLayer in case of Container layer + if err = syscall.CloseHandle(handle); err != nil { + return errors.Wrap(err, "failed to close vhdx handle") + } + + options := OsLayerOptions{ + Type: OsLayerTypeContainer, + } + + // SetupBaseOSLayer expects an empty vhd handle for a container layer and will + // error out otherwise. + if err = SetupBaseOSLayer(ctx, layerPath, 0, options); err != nil { + return err + } + // Create the differencing disk that will be what's copied for the final rw layer + // for a container. + if err = vhd.CreateDiffVhd(diffVhdPath, baseVhdPath, defaultVHDXBlockSizeInMB); err != nil { + return errors.Wrap(err, "failed to create differencing disk") + } + + if err = security.GrantVmGroupAccess(baseVhdPath); err != nil { + return errors.Wrapf(err, "failed to grant vm group access to %s", baseVhdPath) + } + if err = security.GrantVmGroupAccess(diffVhdPath); err != nil { + return errors.Wrapf(err, "failed to grant vm group access to %s", diffVhdPath) + } + return nil +} + +// SetupUtilityVMBaseLayer is a helper to setup a UVMs scratch space. It will create and format +// the vhdx inside and the size is configurable by the sizeInGB parameter. +// +// `uvmPath` is the path to the UtilityVM filesystem. +// +// `baseVhdPath` is the path to where the base vhdx for the UVM should be created. +// +// `diffVhdPath` is the path where the differencing disk for the UVM should be created. +// +// `sizeInGB` specifies the size in gigabytes to make the base vhdx. +func SetupUtilityVMBaseLayer(ctx context.Context, uvmPath, baseVhdPath, diffVhdPath string, sizeInGB uint64) (err error) { + // Remove the base and differencing disks if they exist in case we're asking for a different size. + if _, err := os.Stat(baseVhdPath); err == nil { + if err := os.RemoveAll(baseVhdPath); err != nil { + return errors.Wrap(err, "failed to remove base vhdx") + } + } + if _, err := os.Stat(diffVhdPath); err == nil { + if err := os.RemoveAll(diffVhdPath); err != nil { + return errors.Wrap(err, "failed to remove differencing vhdx") + } + } + + // Just create the vhdx for utilityVM layer, no need to format it. + createParams := &vhd.CreateVirtualDiskParameters{ + Version: 2, + Version2: vhd.CreateVersion2{ + MaximumSize: sizeInGB * 1024 * 1024 * 1024, + BlockSizeInBytes: defaultVHDXBlockSizeInMB * 1024 * 1024, + }, + } + handle, err := vhd.CreateVirtualDisk(baseVhdPath, vhd.VirtualDiskAccessNone, vhd.CreateVirtualDiskFlagNone, createParams) + if err != nil { + return errors.Wrap(err, "failed to create vhdx") + } + + defer func() { + if err != nil { + syscall.CloseHandle(handle) + os.RemoveAll(baseVhdPath) + if os.Stat(diffVhdPath); err == nil { + os.RemoveAll(diffVhdPath) + } + } + }() + + // If it is a UtilityVM layer then the base vhdx must be attached when calling + // `SetupBaseOSLayer` + attachParams := &vhd.AttachVirtualDiskParameters{ + Version: 2, + } + if err := vhd.AttachVirtualDisk(handle, vhd.AttachVirtualDiskFlagNone, attachParams); err != nil { + return errors.Wrapf(err, "failed to attach virtual disk") + } + + options := OsLayerOptions{ + Type: OsLayerTypeVM, + } + if err := SetupBaseOSLayer(ctx, uvmPath, windows.Handle(handle), options); err != nil { + return err + } + + // Detach and close the handle after setting up the layer as we don't need the handle + // for anything else and we no longer need to be attached either. + if err = vhd.DetachVirtualDisk(handle); err != nil { + return errors.Wrap(err, "failed to detach vhdx") + } + if err = syscall.CloseHandle(handle); err != nil { + return errors.Wrap(err, "failed to close vhdx handle") + } + + // Create the differencing disk that will be what's copied for the final rw layer + // for a container. + if err = vhd.CreateDiffVhd(diffVhdPath, baseVhdPath, defaultVHDXBlockSizeInMB); err != nil { + return errors.Wrap(err, "failed to create differencing disk") + } + + if err := security.GrantVmGroupAccess(baseVhdPath); err != nil { + return errors.Wrapf(err, "failed to grant vm group access to %s", baseVhdPath) + } + if err := security.GrantVmGroupAccess(diffVhdPath); err != nil { + return errors.Wrapf(err, "failed to grant vm group access to %s", diffVhdPath) + } + return nil +} |