593 lines
12 KiB
Go
593 lines
12 KiB
Go
// Copyright 2018 Mikhail Klementev. All rights reserved.
|
||
// Use of this source code is governed by a AGPLv3 license
|
||
// (or later) that can be found in the LICENSE file.
|
||
|
||
package main
|
||
|
||
import (
|
||
"errors"
|
||
"fmt"
|
||
"io/ioutil"
|
||
"log"
|
||
"math"
|
||
"math/rand"
|
||
"os"
|
||
"os/exec"
|
||
"os/user"
|
||
"regexp"
|
||
"strings"
|
||
"time"
|
||
|
||
"github.com/naoina/toml"
|
||
"github.com/zcalusic/sysinfo"
|
||
|
||
"code.dumpstack.io/tools/out-of-tree/config"
|
||
)
|
||
|
||
var KERNELS_ALL int64 = math.MaxInt64
|
||
|
||
func kernelListHandler(kcfg config.KernelConfig) (err error) {
|
||
if len(kcfg.Kernels) == 0 {
|
||
return errors.New("No kernels found")
|
||
}
|
||
for _, k := range kcfg.Kernels {
|
||
fmt.Println(k.DistroType, k.DistroRelease, k.KernelRelease)
|
||
}
|
||
return
|
||
}
|
||
|
||
func matchDebianHeadersPkg(container, mask string, generic bool) (
|
||
pkgs []string, err error) {
|
||
|
||
cmd := "apt-cache search linux-headers | cut -d ' ' -f 1"
|
||
output, err := dockerRun(time.Minute, container, "/tmp", cmd)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
r, err := regexp.Compile("linux-headers-" + mask)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
kernels := r.FindAll([]byte(output), -1)
|
||
|
||
for _, k := range kernels {
|
||
pkg := string(k)
|
||
if generic && !strings.HasSuffix(pkg, "generic") {
|
||
continue
|
||
}
|
||
if pkg == "linux-headers-generic" {
|
||
continue
|
||
}
|
||
pkgs = append(pkgs, pkg)
|
||
}
|
||
|
||
return
|
||
}
|
||
|
||
func dockerImagePath(sk config.KernelMask) (path string, err error) {
|
||
usr, err := user.Current()
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
path = usr.HomeDir + "/.out-of-tree/"
|
||
path += sk.DistroType.String() + "/" + sk.DistroRelease
|
||
return
|
||
}
|
||
|
||
func generateBaseDockerImage(sk config.KernelMask) (err error) {
|
||
imagePath, err := dockerImagePath(sk)
|
||
if err != nil {
|
||
return
|
||
}
|
||
dockerPath := imagePath + "/Dockerfile"
|
||
|
||
d := "# BASE\n"
|
||
|
||
if exists(dockerPath) {
|
||
log.Printf("Base image for %s:%s found",
|
||
sk.DistroType.String(), sk.DistroRelease)
|
||
return
|
||
}
|
||
|
||
log.Printf("Base image for %s:%s not found, start generating",
|
||
sk.DistroType.String(), sk.DistroRelease)
|
||
os.MkdirAll(imagePath, os.ModePerm)
|
||
|
||
d += fmt.Sprintf("FROM %s:%s\n",
|
||
strings.ToLower(sk.DistroType.String()),
|
||
sk.DistroRelease,
|
||
)
|
||
|
||
switch sk.DistroType {
|
||
case config.Ubuntu:
|
||
d += "ENV DEBIAN_FRONTEND=noninteractive\n"
|
||
d += "RUN apt-get update\n"
|
||
d += "RUN apt-get install -y build-essential libelf-dev\n"
|
||
d += "RUN apt-get install -y wget git\n"
|
||
d += "RUN mkdir /lib/modules\n"
|
||
default:
|
||
err = fmt.Errorf("%s not yet supported", sk.DistroType.String())
|
||
return
|
||
}
|
||
|
||
d += "# END BASE\n\n"
|
||
|
||
err = ioutil.WriteFile(dockerPath, []byte(d), 0644)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
cmd := exec.Command("docker", "build", "-t", sk.DockerName(), imagePath)
|
||
rawOutput, err := cmd.CombinedOutput()
|
||
if err != nil {
|
||
log.Printf("Base image for %s:%s generating error, see log",
|
||
sk.DistroType.String(), sk.DistroRelease)
|
||
log.Println(string(rawOutput))
|
||
return
|
||
}
|
||
|
||
log.Printf("Base image for %s:%s generating success",
|
||
sk.DistroType.String(), sk.DistroRelease)
|
||
|
||
return
|
||
}
|
||
|
||
func dockerImageAppend(sk config.KernelMask, pkgname string) (err error) {
|
||
imagePath, err := dockerImagePath(sk)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
raw, err := ioutil.ReadFile(imagePath + "/Dockerfile")
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
if strings.Contains(string(raw), pkgname) {
|
||
// already installed kernel
|
||
log.Printf("kernel %s for %s:%s is already exists",
|
||
pkgname, sk.DistroType.String(), sk.DistroRelease)
|
||
return
|
||
}
|
||
|
||
imagepkg := strings.Replace(pkgname, "headers", "image", -1)
|
||
|
||
log.Printf("Start adding kernel %s for %s:%s",
|
||
imagepkg, sk.DistroType.String(), sk.DistroRelease)
|
||
|
||
s := fmt.Sprintf("RUN apt-get install -y %s %s\n", imagepkg, pkgname)
|
||
|
||
err = ioutil.WriteFile(imagePath+"/Dockerfile",
|
||
append(raw, []byte(s)...), 0644)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
cmd := exec.Command("docker", "build", "-t", sk.DockerName(), imagePath)
|
||
rawOutput, err := cmd.CombinedOutput()
|
||
if err != nil {
|
||
// Fallback to previous state
|
||
werr := ioutil.WriteFile(imagePath+"/Dockerfile", raw, 0644)
|
||
if werr != nil {
|
||
return
|
||
}
|
||
|
||
log.Printf("Add kernel %s for %s:%s error, see log",
|
||
pkgname, sk.DistroType.String(), sk.DistroRelease)
|
||
log.Println(string(rawOutput))
|
||
return
|
||
}
|
||
|
||
log.Printf("Add kernel %s for %s:%s success",
|
||
pkgname, sk.DistroType.String(), sk.DistroRelease)
|
||
|
||
return
|
||
}
|
||
|
||
func kickImage(name string) (err error) {
|
||
cmd := exec.Command("docker", "run", name, "bash", "-c", "ls")
|
||
_, err = cmd.CombinedOutput()
|
||
return
|
||
}
|
||
|
||
func copyKernels(name string) (err error) {
|
||
cmd := exec.Command("docker", "ps", "-a")
|
||
rawOutput, err := cmd.CombinedOutput()
|
||
if err != nil {
|
||
log.Println(string(rawOutput))
|
||
return
|
||
}
|
||
|
||
r, err := regexp.Compile(".*" + name)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
var containerID string
|
||
|
||
what := r.FindAll(rawOutput, -1)
|
||
for _, w := range what {
|
||
containerID = strings.Fields(string(w))[0]
|
||
break
|
||
}
|
||
|
||
usr, err := user.Current()
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
target := usr.HomeDir + "/.out-of-tree/kernels/"
|
||
if !exists(target) {
|
||
os.MkdirAll(target, os.ModePerm)
|
||
}
|
||
|
||
cmd = exec.Command("docker", "cp", containerID+":/boot/.", target)
|
||
rawOutput, err = cmd.CombinedOutput()
|
||
if err != nil {
|
||
log.Println(string(rawOutput))
|
||
return
|
||
}
|
||
|
||
return
|
||
}
|
||
|
||
func genKernelPath(files []os.FileInfo, kname string) string {
|
||
for _, file := range files {
|
||
if strings.Contains(file.Name(), "vmlinuz") {
|
||
if strings.Contains(file.Name(), kname) {
|
||
return file.Name()
|
||
}
|
||
}
|
||
}
|
||
return "unknown"
|
||
}
|
||
|
||
func genInitrdPath(files []os.FileInfo, kname string) string {
|
||
for _, file := range files {
|
||
if strings.Contains(file.Name(), "initrd") {
|
||
if strings.Contains(file.Name(), kname) {
|
||
return file.Name()
|
||
}
|
||
}
|
||
}
|
||
return "unknown"
|
||
}
|
||
|
||
func genRootfsImage(d dockerImageInfo) string {
|
||
usr, err := user.Current()
|
||
if err != nil {
|
||
return fmt.Sprintln(err)
|
||
}
|
||
imageFile := d.ContainerName + ".img"
|
||
return usr.HomeDir + "/.out-of-tree/images/" + imageFile
|
||
}
|
||
|
||
type dockerImageInfo struct {
|
||
ContainerName string
|
||
DistroType config.DistroType
|
||
DistroRelease string // 18.04/7.4.1708/9.1
|
||
}
|
||
|
||
func listDockerImages() (diis []dockerImageInfo, err error) {
|
||
cmd := exec.Command("docker", "images")
|
||
rawOutput, err := cmd.CombinedOutput()
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
r, err := regexp.Compile("out_of_tree_.*")
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
containers := r.FindAll(rawOutput, -1)
|
||
for _, c := range containers {
|
||
container := strings.Fields(string(c))[0]
|
||
|
||
s := strings.Replace(container, "__", ".", -1)
|
||
values := strings.Split(s, "_")
|
||
distro, ver := values[3], values[4]
|
||
|
||
dii := dockerImageInfo{
|
||
ContainerName: container,
|
||
DistroRelease: ver,
|
||
}
|
||
|
||
dii.DistroType, err = config.NewDistroType(distro)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
diis = append(diis, dii)
|
||
}
|
||
return
|
||
}
|
||
|
||
func genHostKernels() (kcfg config.KernelConfig, err error) {
|
||
si := sysinfo.SysInfo{}
|
||
si.GetSysInfo()
|
||
|
||
distroType, err := config.NewDistroType(si.OS.Vendor)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
cmd := exec.Command("ls", "/lib/modules")
|
||
rawOutput, err := cmd.CombinedOutput()
|
||
if err != nil {
|
||
log.Println(string(rawOutput), err)
|
||
return
|
||
}
|
||
|
||
kernelsBase := "/boot/"
|
||
files, err := ioutil.ReadDir(kernelsBase)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
// only for compatibility, docker is not really used
|
||
dii := dockerImageInfo{
|
||
ContainerName: config.KernelMask{
|
||
DistroType: distroType,
|
||
DistroRelease: si.OS.Version,
|
||
}.DockerName(),
|
||
}
|
||
|
||
for _, k := range strings.Fields(string(rawOutput)) {
|
||
ki := config.KernelInfo{
|
||
DistroType: distroType,
|
||
DistroRelease: si.OS.Version,
|
||
KernelRelease: k,
|
||
|
||
KernelSource: "/lib/modules/" + k + "/build",
|
||
|
||
KernelPath: kernelsBase + genKernelPath(files, k),
|
||
InitrdPath: kernelsBase + genInitrdPath(files, k),
|
||
RootFS: genRootfsImage(dii),
|
||
}
|
||
kcfg.Kernels = append(kcfg.Kernels, ki)
|
||
}
|
||
|
||
return
|
||
}
|
||
|
||
func updateKernelsCfg(host bool) (err error) {
|
||
newkcfg := config.KernelConfig{}
|
||
|
||
if host {
|
||
// Get host kernels
|
||
newkcfg, err = genHostKernels()
|
||
if err != nil {
|
||
return
|
||
}
|
||
}
|
||
|
||
// Get docker kernels
|
||
dockerImages, err := listDockerImages()
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
for _, d := range dockerImages {
|
||
err = genDockerKernels(d, &newkcfg)
|
||
if err != nil {
|
||
log.Println("gen kernels", d.ContainerName, ":", err)
|
||
continue
|
||
}
|
||
}
|
||
|
||
stripkcfg := config.KernelConfig{}
|
||
for _, nk := range newkcfg.Kernels {
|
||
if !hasKernel(nk, stripkcfg) {
|
||
stripkcfg.Kernels = append(stripkcfg.Kernels, nk)
|
||
}
|
||
}
|
||
|
||
buf, err := toml.Marshal(&stripkcfg)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
buf = append([]byte("# Autogenerated\n# DO NOT EDIT\n\n"), buf...)
|
||
|
||
usr, err := user.Current()
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
// TODO move all cfg path values to one provider
|
||
kernelsCfgPath := usr.HomeDir + "/.out-of-tree/kernels.toml"
|
||
err = ioutil.WriteFile(kernelsCfgPath, buf, 0644)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
log.Println(kernelsCfgPath, "is successfully updated")
|
||
return
|
||
}
|
||
|
||
func genDockerKernels(dii dockerImageInfo, newkcfg *config.KernelConfig) (
|
||
err error) {
|
||
|
||
name := dii.ContainerName
|
||
cmd := exec.Command("docker", "run", name, "ls", "/lib/modules")
|
||
rawOutput, err := cmd.CombinedOutput()
|
||
if err != nil {
|
||
log.Println(string(rawOutput), err)
|
||
return
|
||
}
|
||
|
||
usr, err := user.Current()
|
||
if err != nil {
|
||
return
|
||
}
|
||
kernelsBase := usr.HomeDir + "/.out-of-tree/kernels/"
|
||
files, err := ioutil.ReadDir(kernelsBase)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
for _, k := range strings.Fields(string(rawOutput)) {
|
||
ki := config.KernelInfo{
|
||
DistroType: dii.DistroType,
|
||
DistroRelease: dii.DistroRelease,
|
||
KernelRelease: k,
|
||
ContainerName: name,
|
||
|
||
KernelPath: kernelsBase + genKernelPath(files, k),
|
||
InitrdPath: kernelsBase + genInitrdPath(files, k),
|
||
RootFS: genRootfsImage(dii),
|
||
}
|
||
newkcfg.Kernels = append(newkcfg.Kernels, ki)
|
||
}
|
||
|
||
return
|
||
}
|
||
|
||
func hasKernel(ki config.KernelInfo, kcfg config.KernelConfig) bool {
|
||
for _, sk := range kcfg.Kernels {
|
||
if sk == ki {
|
||
return true
|
||
}
|
||
}
|
||
return false
|
||
}
|
||
|
||
func shuffle(a []string) []string {
|
||
// Fisher–Yates shuffle
|
||
for i := len(a) - 1; i > 0; i-- {
|
||
j := rand.Intn(i + 1)
|
||
a[i], a[j] = a[j], a[i]
|
||
}
|
||
return a
|
||
}
|
||
|
||
func generateKernels(km config.KernelMask, max int64) (err error) {
|
||
log.Println("Generating for kernel mask", km)
|
||
err = generateBaseDockerImage(km)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
var pkgs []string
|
||
pkgs, err = matchDebianHeadersPkg(km.DockerName(),
|
||
km.ReleaseMask, true)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
for i, pkg := range shuffle(pkgs) {
|
||
if max <= 0 {
|
||
log.Println("Max is reached")
|
||
break
|
||
}
|
||
|
||
log.Println(i, "/", len(pkgs), pkg)
|
||
|
||
err = dockerImageAppend(km, pkg)
|
||
if err == nil {
|
||
max -= 1
|
||
} else {
|
||
log.Println("dockerImageAppend", err)
|
||
}
|
||
}
|
||
|
||
err = kickImage(km.DockerName())
|
||
if err != nil {
|
||
log.Println("kick image", km.DockerName(), ":", err)
|
||
return
|
||
}
|
||
|
||
err = copyKernels(km.DockerName())
|
||
if err != nil {
|
||
log.Println("copy kernels", km.DockerName(), ":", err)
|
||
return
|
||
}
|
||
return
|
||
}
|
||
|
||
func kernelAutogenHandler(workPath string, max int64, host bool) (err error) {
|
||
ka, err := config.ReadArtifactConfig(workPath + "/.out-of-tree.toml")
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
for _, sk := range ka.SupportedKernels {
|
||
if sk.DistroRelease == "" {
|
||
err = errors.New("Please set distro_release")
|
||
return
|
||
}
|
||
|
||
err = generateKernels(sk, max)
|
||
if err != nil {
|
||
return
|
||
}
|
||
}
|
||
|
||
err = updateKernelsCfg(host)
|
||
return
|
||
}
|
||
|
||
func kernelDockerRegenHandler(host bool) (err error) {
|
||
dockerImages, err := listDockerImages()
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
for _, d := range dockerImages {
|
||
var imagePath string
|
||
imagePath, err = dockerImagePath(config.KernelMask{
|
||
DistroType: d.DistroType,
|
||
DistroRelease: d.DistroRelease,
|
||
})
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
cmd := exec.Command("docker", "build", "-t",
|
||
d.ContainerName, imagePath)
|
||
var rawOutput []byte
|
||
rawOutput, err = cmd.CombinedOutput()
|
||
if err != nil {
|
||
log.Println("docker build:", string(rawOutput))
|
||
return
|
||
}
|
||
|
||
err = kickImage(d.ContainerName)
|
||
if err != nil {
|
||
log.Println("kick image", d.ContainerName, ":", err)
|
||
continue
|
||
}
|
||
|
||
err = copyKernels(d.ContainerName)
|
||
if err != nil {
|
||
log.Println("copy kernels", d.ContainerName, ":", err)
|
||
continue
|
||
}
|
||
}
|
||
|
||
return updateKernelsCfg(host)
|
||
}
|
||
|
||
func kernelGenallHandler(distro, version string, host bool) (err error) {
|
||
distroType, err := config.NewDistroType(distro)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
km := config.KernelMask{
|
||
DistroType: distroType,
|
||
DistroRelease: version,
|
||
ReleaseMask: ".*",
|
||
}
|
||
err = generateKernels(km, KERNELS_ALL)
|
||
if err != nil {
|
||
return
|
||
}
|
||
|
||
return updateKernelsCfg(host)
|
||
}
|