mirror of
https://github.com/kata-containers/kata-containers.git
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27709fce43
This commit moves all of the source files to the qemu folder. Signed-off-by: Mark Ryan <mark.d.ryan@intel.com>
77 lines
2.6 KiB
Go
77 lines
2.6 KiB
Go
/*
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// Copyright (c) 2017 Intel Corporation
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//
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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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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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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 qemu
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import (
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"context"
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"fmt"
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"io/ioutil"
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"os"
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"os/exec"
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"path"
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"syscall"
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)
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// CreateCloudInitISO creates a cloud-init ConfigDrive ISO image. This is
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// useful for configuring newly booted VMs. Before it can create the ISO
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// image it needs to create a file tree with the various files that will
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// make up the image. This directory is created under scratchDir and is
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// deleted when when the function returns, successfully or otherwise. ctx is
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// a context that can be used to timeout or cancel the image creation.
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// isoPath contains the desired path of the ISO image to be created. The
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// userdata and metadata parameters are byte slices that contain the
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// ConfigDrive userdata and metadata that will be stored with the ISO image.
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// The attrs parameter can be used to control aspects of the newly created
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// qemu process, such as the user and group under which it runs. It may be nil.
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func CreateCloudInitISO(ctx context.Context, scratchDir, isoPath string,
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userData, metaData []byte, attr *syscall.SysProcAttr) error {
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configDrivePath := path.Join(scratchDir, "clr-cloud-init")
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dataDirPath := path.Join(configDrivePath, "openstack", "latest")
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metaDataPath := path.Join(dataDirPath, "meta_data.json")
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userDataPath := path.Join(dataDirPath, "user_data")
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defer func() {
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_ = os.RemoveAll(configDrivePath)
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}()
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err := os.MkdirAll(dataDirPath, 0755)
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if err != nil {
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return fmt.Errorf("Unable to create config drive directory %s : %v",
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dataDirPath, err)
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}
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err = ioutil.WriteFile(metaDataPath, metaData, 0644)
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if err != nil {
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return fmt.Errorf("Unable to create %s : %v", metaDataPath, err)
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}
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err = ioutil.WriteFile(userDataPath, userData, 0644)
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if err != nil {
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return fmt.Errorf("Unable to create %s : %v", userDataPath, err)
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}
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cmd := exec.CommandContext(ctx, "xorriso", "-as", "mkisofs", "-R", "-V", "config-2",
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"-o", isoPath, configDrivePath)
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cmd.SysProcAttr = attr
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err = cmd.Run()
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if err != nil {
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return fmt.Errorf("Unable to create cloudinit iso image %v", err)
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}
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return nil
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}
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