126 lines
3.2 KiB
Go
126 lines
3.2 KiB
Go
/*
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Copyright 2016 The Kubernetes Authors All rights reserved.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package drivers
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import (
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"io/ioutil"
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"os"
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"path/filepath"
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"syscall"
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"github.com/docker/machine/libmachine/drivers"
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"github.com/docker/machine/libmachine/mcnflag"
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"github.com/docker/machine/libmachine/mcnutils"
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"github.com/docker/machine/libmachine/ssh"
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"github.com/golang/glog"
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"github.com/pkg/errors"
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)
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func GetDiskPath(d *drivers.BaseDriver) string {
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return filepath.Join(d.ResolveStorePath("."), d.GetMachineName()+".rawdisk")
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}
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type CommonDriver struct{}
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//Not implemented yet
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func (d *CommonDriver) GetCreateFlags() []mcnflag.Flag {
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return nil
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}
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//Not implemented yet
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func (d *CommonDriver) SetConfigFromFlags(flags drivers.DriverOptions) error {
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return nil
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}
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func createRawDiskImage(sshKeyPath, diskPath string, diskSizeMb int) error {
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tarBuf, err := mcnutils.MakeDiskImage(sshKeyPath)
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if err != nil {
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return err
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}
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file, err := os.OpenFile(diskPath, os.O_CREATE|os.O_EXCL|os.O_WRONLY, 0644)
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if err != nil {
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return err
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}
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defer file.Close()
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file.Seek(0, os.SEEK_SET)
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if _, err := file.Write(tarBuf.Bytes()); err != nil {
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return err
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}
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if err := file.Close(); err != nil {
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return errors.Wrapf(err, "closing file %s", diskPath)
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}
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if err := os.Truncate(diskPath, int64(diskSizeMb*1000000)); err != nil {
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return err
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}
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return nil
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}
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func publicSSHKeyPath(d *drivers.BaseDriver) string {
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return d.GetSSHKeyPath() + ".pub"
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}
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// Restart a host. This may just call Stop(); Start() if the provider does not
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// have any special restart behaviour.
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func Restart(d drivers.Driver) error {
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for _, f := range []func() error{d.Stop, d.Start} {
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if err := f(); err != nil {
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return err
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}
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}
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return nil
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}
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func MakeDiskImage(d *drivers.BaseDriver, boot2dockerURL string, diskSize int) error {
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//TODO(r2d4): rewrite this, not using b2dutils
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b2dutils := mcnutils.NewB2dUtils(d.StorePath)
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if err := b2dutils.CopyIsoToMachineDir(boot2dockerURL, d.MachineName); err != nil {
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return errors.Wrap(err, "Error copying ISO to machine dir")
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}
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glog.Info("Creating ssh key...")
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if err := ssh.GenerateSSHKey(d.GetSSHKeyPath()); err != nil {
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return err
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}
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glog.Info("Creating raw disk image...")
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diskPath := GetDiskPath(d)
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if _, err := os.Stat(diskPath); os.IsNotExist(err) {
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if err := createRawDiskImage(publicSSHKeyPath(d), diskPath, diskSize); err != nil {
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return err
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}
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if err := fixPermissions(d.ResolveStorePath(".")); err != nil {
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return err
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}
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}
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return nil
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}
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func fixPermissions(path string) error {
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os.Chown(path, syscall.Getuid(), syscall.Getegid())
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files, _ := ioutil.ReadDir(path)
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for _, f := range files {
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fp := filepath.Join(path, f.Name())
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if err := os.Chown(fp, syscall.Getuid(), syscall.Getegid()); err != nil {
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return err
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}
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}
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return nil
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}
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