509 lines
10 KiB
Go
509 lines
10 KiB
Go
// Copyright 2018 Mikhail Klementev. All rights reserved.
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// Use of this source code is governed by a AGPLv3 license
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// (or later) that can be found in the LICENSE file.
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package main
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import (
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"errors"
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"fmt"
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"io/ioutil"
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"log"
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"os"
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"os/exec"
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"os/user"
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"regexp"
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"strings"
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"time"
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"github.com/jollheef/out-of-tree/config"
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"github.com/naoina/toml"
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)
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func kernelListHandler(kcfg config.KernelConfig) (err error) {
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if len(kcfg.Kernels) == 0 {
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return errors.New("No kernels found")
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}
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for _, k := range kcfg.Kernels {
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fmt.Println(k.DistroType, k.DistroRelease, k.KernelRelease)
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}
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return
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}
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func matchDebianHeadersPkg(container, mask string, generic bool) (
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pkgs []string, err error) {
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cmd := "apt-cache search linux-headers | cut -d ' ' -f 1"
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output, err := dockerRun(time.Minute, container, "/tmp", cmd)
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if err != nil {
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return
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}
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r, err := regexp.Compile("linux-headers-" + mask)
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if err != nil {
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return
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}
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kernels := r.FindAll([]byte(output), -1)
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for _, k := range kernels {
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pkg := string(k)
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if generic && !strings.HasSuffix(pkg, "generic") {
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continue
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}
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if pkg == "linux-headers-generic" {
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continue
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}
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pkgs = append(pkgs, pkg)
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}
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return
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}
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func dockerImagePath(sk config.KernelMask) (path string, err error) {
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usr, err := user.Current()
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if err != nil {
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return
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}
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path = usr.HomeDir + "/.out-of-tree/"
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path += sk.DistroType.String() + "/" + sk.DistroRelease
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return
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}
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func generateBaseDockerImage(sk config.KernelMask) (err error) {
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imagePath, err := dockerImagePath(sk)
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if err != nil {
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return
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}
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dockerPath := imagePath + "/Dockerfile"
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d := "# BASE\n"
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if exists(dockerPath) {
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log.Printf("Base image for %s:%s found",
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sk.DistroType.String(), sk.DistroRelease)
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return
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}
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log.Printf("Base image for %s:%s not found, start generating",
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sk.DistroType.String(), sk.DistroRelease)
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os.MkdirAll(imagePath, os.ModePerm)
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d += fmt.Sprintf("FROM %s:%s\n",
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strings.ToLower(sk.DistroType.String()),
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sk.DistroRelease,
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)
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switch sk.DistroType {
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case config.Ubuntu:
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d += "ENV DEBIAN_FRONTEND=noninteractive\n"
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d += "RUN apt-get update\n"
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d += "RUN apt-get install -y build-essential libelf-dev\n"
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d += "RUN apt-get install -y wget git\n"
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default:
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s := fmt.Sprintf("%s not yet supported", sk.DistroType.String())
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err = errors.New(s)
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return
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}
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d += "# END BASE\n\n"
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err = ioutil.WriteFile(dockerPath, []byte(d), 0644)
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if err != nil {
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return
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}
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cmd := exec.Command("docker", "build", "-t", sk.DockerName(), imagePath)
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rawOutput, err := cmd.CombinedOutput()
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if err != nil {
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log.Printf("Base image for %s:%s generating error, see log",
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sk.DistroType.String(), sk.DistroRelease)
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log.Println(string(rawOutput))
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return
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}
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log.Printf("Base image for %s:%s generating success",
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sk.DistroType.String(), sk.DistroRelease)
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return
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}
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func dockerImageAppend(sk config.KernelMask, pkgname string) (err error) {
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imagePath, err := dockerImagePath(sk)
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if err != nil {
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return
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}
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raw, err := ioutil.ReadFile(imagePath + "/Dockerfile")
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if err != nil {
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return
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}
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if strings.Contains(string(raw), pkgname) {
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// already installed kernel
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log.Printf("kernel %s for %s:%s is already exists",
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pkgname, sk.DistroType.String(), sk.DistroRelease)
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return
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}
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imagepkg := strings.Replace(pkgname, "headers", "image", -1)
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log.Printf("Start adding kernel %s for %s:%s",
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imagepkg, sk.DistroType.String(), sk.DistroRelease)
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s := fmt.Sprintf("RUN apt-get install -y %s %s\n", imagepkg, pkgname)
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err = ioutil.WriteFile(imagePath+"/Dockerfile",
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append(raw, []byte(s)...), 0644)
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if err != nil {
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return
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}
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cmd := exec.Command("docker", "build", "-t", sk.DockerName(), imagePath)
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rawOutput, err := cmd.CombinedOutput()
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if err != nil {
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// Fallback to previous state
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werr := ioutil.WriteFile(imagePath+"/Dockerfile", raw, 0644)
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if werr != nil {
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return
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}
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log.Printf("Add kernel %s for %s:%s error, see log",
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pkgname, sk.DistroType.String(), sk.DistroRelease)
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log.Println(string(rawOutput))
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return
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}
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log.Printf("Add kernel %s for %s:%s success",
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pkgname, sk.DistroType.String(), sk.DistroRelease)
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return
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}
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func kickImage(name string) (err error) {
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cmd := exec.Command("docker", "run", name, "bash", "-c", "ls")
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_, err = cmd.CombinedOutput()
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return
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}
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func copyKernels(name string) (err error) {
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cmd := exec.Command("docker", "ps", "-a")
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rawOutput, err := cmd.CombinedOutput()
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if err != nil {
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log.Println(string(rawOutput))
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return
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}
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r, err := regexp.Compile(".*" + name)
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if err != nil {
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return
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}
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var containerID string
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what := r.FindAll(rawOutput, -1)
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for _, w := range what {
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containerID = strings.Fields(string(w))[0]
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break
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}
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usr, err := user.Current()
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if err != nil {
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return
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}
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target := usr.HomeDir + "/.out-of-tree/kernels/"
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if !exists(target) {
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os.MkdirAll(target, os.ModePerm)
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}
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cmd = exec.Command("docker", "cp", containerID+":/boot/.", target)
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rawOutput, err = cmd.CombinedOutput()
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if err != nil {
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log.Println(string(rawOutput))
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return
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}
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return
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}
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func genKernelPath(files []os.FileInfo, kname string) string {
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for _, file := range files {
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if strings.Contains(file.Name(), "vmlinuz") {
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if strings.Contains(file.Name(), kname) {
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return file.Name()
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}
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}
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}
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return "unknown"
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}
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func genInitrdPath(files []os.FileInfo, kname string) string {
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for _, file := range files {
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if strings.Contains(file.Name(), "initrd") {
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if strings.Contains(file.Name(), kname) {
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return file.Name()
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}
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}
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}
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return "unknown"
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}
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func genRootfsImage(d dockerImageInfo) string {
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usr, err := user.Current()
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if err != nil {
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return fmt.Sprintln(err)
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}
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imageFile := d.ContainerName + ".img"
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return usr.HomeDir + "/.out-of-tree/images/" + imageFile
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}
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type dockerImageInfo struct {
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ContainerName string
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DistroType config.DistroType
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DistroRelease string // 18.04/7.4.1708/9.1
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}
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func listDockerImages() (diis []dockerImageInfo, err error) {
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cmd := exec.Command("docker", "images")
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rawOutput, err := cmd.CombinedOutput()
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if err != nil {
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return
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}
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r, err := regexp.Compile("out_of_tree_.*")
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if err != nil {
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return
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}
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containers := r.FindAll(rawOutput, -1)
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for _, c := range containers {
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container := strings.Fields(string(c))[0]
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s := strings.Replace(container, "__", ".", -1)
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values := strings.Split(s, "_")
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distro, ver := values[3], values[4]
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dii := dockerImageInfo{
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ContainerName: container,
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DistroRelease: ver,
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}
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dii.DistroType, err = config.NewDistroType(distro)
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if err != nil {
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return
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}
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diis = append(diis, dii)
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}
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return
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}
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func updateKernelsCfg() (err error) {
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dockerImages, err := listDockerImages()
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if err != nil {
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return
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}
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newkcfg := config.KernelConfig{}
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for _, d := range dockerImages {
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err = genKernels(d, &newkcfg)
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if err != nil {
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log.Println("gen kernels", d.ContainerName, ":", err)
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continue
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}
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}
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stripkcfg := config.KernelConfig{}
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for _, nk := range newkcfg.Kernels {
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if !hasKernel(nk, stripkcfg) {
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stripkcfg.Kernels = append(stripkcfg.Kernels, nk)
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}
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}
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buf, err := toml.Marshal(&stripkcfg)
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if err != nil {
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return
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}
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buf = append([]byte("# Autogenerated\n# DO NOT EDIT\n\n"), buf...)
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usr, err := user.Current()
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if err != nil {
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return
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}
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// TODO move all cfg path values to one provider
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kernelsCfgPath := usr.HomeDir + "/.out-of-tree/kernels.toml"
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err = ioutil.WriteFile(kernelsCfgPath, buf, 0644)
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if err != nil {
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return
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}
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log.Println(kernelsCfgPath, "is successfully updated")
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return
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}
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func genKernels(dii dockerImageInfo, newkcfg *config.KernelConfig) (
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err error) {
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name := dii.ContainerName
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cmd := exec.Command("docker", "run", name, "ls", "/lib/modules")
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rawOutput, err := cmd.CombinedOutput()
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if err != nil {
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log.Println(string(rawOutput), err)
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return
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}
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usr, err := user.Current()
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if err != nil {
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return
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}
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kernelsBase := usr.HomeDir + "/.out-of-tree/kernels/"
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files, err := ioutil.ReadDir(kernelsBase)
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if err != nil {
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return
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}
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for _, k := range strings.Fields(string(rawOutput)) {
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ki := config.KernelInfo{
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DistroType: dii.DistroType,
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DistroRelease: dii.DistroRelease,
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KernelRelease: k,
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ContainerName: name,
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KernelPath: kernelsBase + genKernelPath(files, k),
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InitrdPath: kernelsBase + genInitrdPath(files, k),
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RootFS: genRootfsImage(dii),
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}
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newkcfg.Kernels = append(newkcfg.Kernels, ki)
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}
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return
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}
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func hasKernel(ki config.KernelInfo, kcfg config.KernelConfig) bool {
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for _, sk := range kcfg.Kernels {
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if sk == ki {
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return true
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}
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}
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return false
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}
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func generateKernels(km config.KernelMask) (err error) {
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err = generateBaseDockerImage(km)
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if err != nil {
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return
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}
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var pkgs []string
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pkgs, err = matchDebianHeadersPkg(km.DockerName(),
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km.ReleaseMask, true)
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if err != nil {
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return
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}
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for i, pkg := range pkgs {
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log.Println(i, "/", len(pkgs))
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dockerImageAppend(km, pkg)
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}
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err = kickImage(km.DockerName())
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if err != nil {
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log.Println("kick image", km.DockerName(), ":", err)
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return
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}
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err = copyKernels(km.DockerName())
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if err != nil {
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log.Println("copy kernels", km.DockerName(), ":", err)
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return
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}
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return
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}
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func kernelAutogenHandler(workPath string) (err error) {
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ka, err := config.ReadArtifactConfig(workPath + "/.out-of-tree.toml")
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if err != nil {
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return
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}
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for _, sk := range ka.SupportedKernels {
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if sk.DistroRelease == "" {
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err = errors.New("Please set distro_release")
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return
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}
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err = generateKernels(sk)
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if err != nil {
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return
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}
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}
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err = updateKernelsCfg()
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return
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}
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func kernelDockerRegenHandler() (err error) {
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dockerImages, err := listDockerImages()
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if err != nil {
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return
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}
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for _, d := range dockerImages {
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var imagePath string
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imagePath, err = dockerImagePath(config.KernelMask{
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DistroType: d.DistroType,
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DistroRelease: d.DistroRelease,
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})
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if err != nil {
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return
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}
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cmd := exec.Command("docker", "build", "-t",
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d.ContainerName, imagePath)
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var rawOutput []byte
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rawOutput, err = cmd.CombinedOutput()
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if err != nil {
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log.Println("docker build:", string(rawOutput))
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return
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}
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err = kickImage(d.ContainerName)
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if err != nil {
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log.Println("kick image", d.ContainerName, ":", err)
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continue
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}
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err = copyKernels(d.ContainerName)
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if err != nil {
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log.Println("copy kernels", d.ContainerName, ":", err)
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continue
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}
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}
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return updateKernelsCfg()
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}
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func kernelGenallHandler(distro, version string) (err error) {
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distroType, err := config.NewDistroType(distro)
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if err != nil {
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return
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}
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km := config.KernelMask{
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DistroType: distroType,
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DistroRelease: version,
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ReleaseMask: ".*",
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}
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err = generateKernels(km)
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if err != nil {
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return
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}
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return updateKernelsCfg()
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}
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