main: Mock file system and add getFile tests

This uses afero to proxy all file system accesses and then injects an
in-memory file system in order to test the getFile function.

.ci/check_linting.sh

@@ -0,0 +1,13 @@
+#!/bin/sh
+
+echo "### Running gofmt..."
+files="$(gofmt -l .)"
+
+if [ !  -z "$files" ]; then
+	# run gofmt to print out the diff of what needs to be changed
+	gofmt -d -e .
+	exit 1
+fi
+
+echo "### Running staticcheck..."
+staticcheck ./...

.gitlab-ci.yml

@@ -1,7 +1,7 @@
 ---
 
 # global settings
-image: alpine:latest
+image: alpine:edge
 
 stages:
   - lint
@@ -27,9 +27,11 @@ gofmt linting:
   allow_failure: true
   <<: *only-default
   before_script:
-    - apk -q add go
+    # specific mirror used because staticcheck hasn't made it to the other mirrors yet...
+    - apk -q update --repository http://dl-4.alpinelinux.org/alpine/edge/testing
+    - apk -q add --repository http://dl-4.alpinelinux.org/alpine/edge/testing go staticcheck
   script:
-    - .gitlab-ci/check_gofmt.sh
+    - .ci/check_linting.sh
 
 build:
   stage: build

.gitlab-ci/check_gofmt.sh

@@ -1,11 +0,0 @@
-#!/bin/sh
-
-files="$(gofmt -l .)"
-
-[ -z "$files" ] && exit 0
-
-# run gofmt to print out the diff of what needs to be changed
-
-gofmt -d -e .
-
-exit 1

go.mod

@@ -3,10 +3,9 @@ module gitlab.com/postmarketOS/postmarketos-mkinitfs
 go 1.16
 
 require (
-	git.sr.ht/~sircmpwn/getopt v0.0.0-20201218204720-9961a9c6298f
-	github.com/BurntSushi/toml v0.4.0
 	github.com/cavaliercoder/go-cpio v0.0.0-20180626203310-925f9528c45e
 	github.com/klauspost/compress v1.13.3 // indirect
 	github.com/klauspost/pgzip v1.2.5
+	github.com/spf13/afero v1.7.1
 	golang.org/x/sys v0.0.0-20210630005230-0f9fa26af87c
 )

go.sum

@@ -1,30 +1,442 @@
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main.go

@@ -1,11 +1,13 @@
 // Copyright 2021 Clayton Craft <clayton@craftyguy.net>
 // SPDX-License-Identifier: GPL-3.0-or-later
+
 package main
 
 import (
 	"bufio"
 	"debug/elf"
 	"errors"
+	"flag"
 	"fmt"
 	"io"
 	"io/ioutil"
@@ -13,36 +15,47 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"regexp"
 	"strings"
 	"time"
 
-	"git.sr.ht/~sircmpwn/getopt"
+	"github.com/spf13/afero"
+
 	"gitlab.com/postmarketOS/postmarketos-mkinitfs/pkgs/archive"
 	"gitlab.com/postmarketOS/postmarketos-mkinitfs/pkgs/deviceinfo"
 	"gitlab.com/postmarketOS/postmarketos-mkinitfs/pkgs/misc"
 )
 
+var appFs afero.Fs
+
+func initFs(fs afero.Fs) {
+	appFs = fs
+}
+
 func timeFunc(start time.Time, name string) {
 	elapsed := time.Since(start)
 	log.Printf("%s completed in: %s", name, elapsed)
 }
 
 func main() {
-	devinfo, err := deviceinfo.ReadDeviceinfo()
+	initFs(afero.NewOsFs())
-	if err != nil {
+
+	deviceinfoFile := "/etc/deviceinfo"
+	if !exists(deviceinfoFile) {
 		log.Print("NOTE: deviceinfo (from device package) not installed yet, " +
 			"not building the initramfs now (it should get built later " +
 			"automatically.)")
-		os.Exit(0)
+		return
 	}
 
-	var outDir string
+	devinfo, err := deviceinfo.ReadDeviceinfo(deviceinfoFile)
-	getopt.StringVar(&outDir, "d", "/boot", "Directory to output initfs(-extra) and other boot files, default: /boot")
+	if err != nil {
-
-	if err := getopt.Parse(); err != nil {
 		log.Fatal(err)
 	}
 
+	outDir := flag.String("d", "/boot", "Directory to output initfs(-extra) and other boot files")
+	flag.Parse()
+
 	defer timeFunc(time.Now(), "mkinitfs")
 
 	kernVer, err := getKernelVersion()
@@ -50,31 +63,27 @@ func main() {
 		log.Fatal(err)
 	}
 
-	if err != nil {
-		log.Fatal(err)
-	}
-
 	// temporary working dir
 	workDir, err := ioutil.TempDir("", "mkinitfs")
 	if err != nil {
 		log.Fatal("Unable to create temporary work directory:", err)
 	}
-	defer os.RemoveAll(workDir)
+	defer appFs.RemoveAll(workDir)
 
 	log.Print("Generating for kernel version: ", kernVer)
-	log.Print("Output directory: ", outDir)
+	log.Print("Output directory: ", *outDir)
 
 	if err := generateInitfs("initramfs", workDir, kernVer, devinfo); err != nil {
-		log.Fatal(err)
+		log.Fatal("generateInitfs: ", err)
 	}
 
 	if err := generateInitfsExtra("initramfs-extra", workDir, devinfo); err != nil {
-		log.Fatal(err)
+		log.Fatal("generateInitfsExtra: ", err)
 	}
 
 	// Final processing of initramfs / kernel is done by boot-deploy
-	if err := bootDeploy(workDir, outDir); err != nil {
+	if err := bootDeploy(workDir, *outDir); err != nil {
-		log.Fatal(err)
+		log.Fatal("bootDeploy: ", err)
 	}
 
 }
@@ -83,22 +92,33 @@ func bootDeploy(workDir string, outDir string) error {
 	// boot-deploy expects the kernel to be in the same dir as initramfs.
 	// Assume that the kernel is in the output dir...
 	log.Print("== Using boot-deploy to finalize/install files ==")
-	kernels, _ := filepath.Glob(filepath.Join(outDir, "vmlinuz*"))
+	kernels, _ := afero.Glob(appFs, filepath.Join(outDir, "vmlinuz*"))
 	if len(kernels) == 0 {
 		return errors.New("Unable to find any kernels at " + filepath.Join(outDir, "vmlinuz*"))
 	}
-	kernFile, err := os.Open(kernels[0])
+
+	// Pick a kernel that does not have suffixes added by boot-deploy
+	var kernFile string
+	for _, f := range kernels {
+		if strings.HasSuffix(f, "-dtb") || strings.HasSuffix(f, "-mtk") {
+			continue
+		}
+		kernFile = f
+		break
+	}
+
+	kernFd, err := appFs.Open(kernFile)
 	if err != nil {
 		return err
 	}
-	defer kernFile.Close()
+	defer kernFd.Close()
 
-	kernFileCopy, err := os.Create(filepath.Join(workDir, "vmlinuz"))
+	kernFileCopy, err := appFs.Create(filepath.Join(workDir, "vmlinuz"))
 	if err != nil {
 		return err
 	}
 
-	if _, err = io.Copy(kernFileCopy, kernFile); err != nil {
+	if _, err = io.Copy(kernFileCopy, kernFd); err != nil {
 		return err
 	}
 	kernFileCopy.Close()
@@ -111,35 +131,21 @@ func bootDeploy(workDir string, outDir string) error {
 		"-o", outDir,
 		"initramfs-extra")
 	if !exists(cmd.Path) {
-		return errors.New("boot-deploy command not found.")
+		return errors.New("boot-deploy command not found")
 	}
 
 	cmd.Stdout = os.Stdout
 	cmd.Stderr = os.Stderr
-	// err is ignored, since shellcheck will return != 0 if there are issues
 	if err := cmd.Run(); err != nil {
-		log.Print("'boot-deploy' command failed: ")
+		log.Print("'boot-deploy' command failed")
 		return err
 	}
 
 	return nil
 }
 
-func createInitfsRootDirs(initfsRoot string) {
-	dirs := []string{
-		"/bin", "/sbin", "/usr/bin", "/usr/lib", "/usr/sbin", "/proc", "/sys",
-		"/dev", "/tmp", "/lib", "/boot", "/sysroot", "/etc",
-	}
-
-	for _, dir := range dirs {
-		if err := os.MkdirAll(filepath.Join(initfsRoot, dir), os.FileMode(0775)); err != nil {
-			log.Fatal(err)
-		}
-	}
-}
-
 func exists(file string) bool {
-	if _, err := os.Stat(file); err == nil {
+	if _, err := appFs.Stat(file); err == nil {
 		return true
 	}
 	return false
@@ -153,17 +159,16 @@ func getHookFiles(filesdir string) misc.StringSet {
 	files := make(misc.StringSet)
 	for _, file := range fileInfo {
 		path := filepath.Join(filesdir, file.Name())
-		f, err := os.Open(path)
+		f, err := appFs.Open(path)
 		if err != nil {
 			log.Fatal(err)
 		}
 		defer f.Close()
 		s := bufio.NewScanner(f)
 		for s.Scan() {
-			if !exists(s.Text()) {
+			if err := getFile(files, s.Text(), true); err != nil {
 				log.Fatalf("Unable to find file %q required by %q", s.Text(), path)
 			}
-			files[s.Text()] = false
 		}
 		if err := s.Err(); err != nil {
 			log.Fatal(err)
@@ -174,16 +179,26 @@ func getHookFiles(filesdir string) misc.StringSet {
 
 // Recursively list all dependencies for a given ELF binary
 func getBinaryDeps(files misc.StringSet, file string) error {
+	lstater, ok := appFs.(afero.Lstater)
+	if !ok {
+		return errors.New("FS doesn't support Lstat")
+	}
+
 	// if file is a symlink, resolve dependencies for target
-	fileStat, err := os.Lstat(file)
+	fileStat, _, err := lstater.LstatIfPossible(file)
 	if err != nil {
 		log.Print("getBinaryDeps: failed to stat file")
 		return err
 	}
 
+	lreader, ok := appFs.(afero.LinkReader)
+	if !ok {
+		return errors.New("FS doesn't support Readlink")
+	}
+
 	// Symlink: write symlink to archive then set 'file' to link target
 	if fileStat.Mode()&os.ModeSymlink != 0 {
-		target, err := os.Readlink(file)
+		target, err := lreader.ReadlinkIfPossible(file)
 		if err != nil {
 			log.Print("getBinaryDeps: unable to read symlink: ", file)
 			return err
@@ -218,7 +233,7 @@ func getBinaryDeps(files misc.StringSet, file string) error {
 		found := false
 		for _, libdir := range libdirs {
 			path := filepath.Join(libdir, lib)
-			if _, err := os.Stat(path); err == nil {
+			if _, err := appFs.Stat(path); err == nil {
 				err := getBinaryDeps(files, path)
 				if err != nil {
 					return err
@@ -247,13 +262,42 @@ func getFiles(files misc.StringSet, newFiles misc.StringSet, required bool) erro
 }
 
 func getFile(files misc.StringSet, file string, required bool) error {
-	if !exists(file) {
+	// Expand glob expression
+	expanded, _ := afero.Glob(appFs, file)
+	if len(expanded) > 0 && expanded[0] != file {
+		for _, path := range expanded {
+			if err := getFile(files, path, required); err != nil {
+				return err
+			}
+		}
+		return nil
+	}
+
+	fileInfo, err := appFs.Stat(file)
+	if err != nil {
 		if required {
 			return errors.New("getFile: File does not exist :" + file)
 		}
 		return nil
 	}
 
+	if fileInfo.IsDir() {
+		// Recurse over directory contents
+		err := afero.Walk(appFs, file, func(path string, f os.FileInfo, err error) error {
+			if err != nil {
+				return err
+			}
+			if f.IsDir() {
+				return nil
+			}
+			return getFile(files, path, required)
+		})
+		if err != nil {
+			return err
+		}
+		return nil
+	}
+
 	files[file] = false
 
 	// get dependencies for binaries
@@ -262,8 +306,7 @@ func getFile(files misc.StringSet, file string, required bool) error {
 		return nil
 	}
 
-	err := getBinaryDeps(files, file)
+	if err := getBinaryDeps(files, file); err != nil {
-	if err != nil {
 		return err
 	}
 
@@ -272,7 +315,7 @@ func getFile(files misc.StringSet, file string, required bool) error {
 
 func getOskConfFontPath(oskConfPath string) (string, error) {
 	var path string
-	f, err := os.Open(oskConfPath)
+	f, err := appFs.Open(oskConfPath)
 	if err != nil {
 		return path, err
 	}
@@ -324,7 +367,7 @@ func getFdeFiles(files misc.StringSet, devinfo deviceinfo.DeviceInfo) error {
 
 	// Directfb
 	dfbFiles := make(misc.StringSet)
-	err = filepath.Walk("/usr/lib/directfb-1.7-7", func(path string, f os.FileInfo, err error) error {
+	err = afero.Walk(appFs, "/usr/lib/directfb-1.7-7", func(path string, f os.FileInfo, err error) error {
 		if filepath.Ext(path) == ".so" {
 			dfbFiles[path] = false
 		}
@@ -340,7 +383,7 @@ func getFdeFiles(files misc.StringSet, devinfo deviceinfo.DeviceInfo) error {
 
 	// tslib
 	tslibFiles := make(misc.StringSet)
-	err = filepath.Walk("/usr/lib/ts", func(path string, f os.FileInfo, err error) error {
+	err = afero.Walk(appFs, "/usr/lib/ts", func(path string, f os.FileInfo, err error) error {
 		if filepath.Ext(path) == ".so" {
 			tslibFiles[path] = false
 		}
@@ -350,7 +393,7 @@ func getFdeFiles(files misc.StringSet, devinfo deviceinfo.DeviceInfo) error {
 		log.Print("getBinaryDeps: failed to stat file")
 		return err
 	}
-	libts, _ := filepath.Glob("/usr/lib/libts*")
+	libts, _ := afero.Glob(appFs, "/usr/lib/libts*")
 	for _, file := range libts {
 		tslibFiles[file] = false
 	}
@@ -359,13 +402,13 @@ func getFdeFiles(files misc.StringSet, devinfo deviceinfo.DeviceInfo) error {
 	}
 
 	// mesa hw accel
-	if devinfo.Deviceinfo_mesa_driver != "" {
+	if devinfo.MesaDriver != "" {
 		mesaFiles := misc.StringSet{
 			"/usr/lib/libEGL.so.1":    false,
 			"/usr/lib/libGLESv2.so.2": false,
 			"/usr/lib/libgbm.so.1":    false,
 			"/usr/lib/libudev.so.1":   false,
-			"/usr/lib/xorg/modules/dri/" + devinfo.Deviceinfo_mesa_driver + "_dri.so": false,
+			"/usr/lib/xorg/modules/dri/" + devinfo.MesaDriver + "_dri.so": false,
 		}
 		if err := getFiles(files, mesaFiles, true); err != nil {
 			return err
@@ -376,7 +419,7 @@ func getFdeFiles(files misc.StringSet, devinfo deviceinfo.DeviceInfo) error {
 }
 
 func getHookScripts(files misc.StringSet) {
-	scripts, _ := filepath.Glob("/etc/postmarketos-mkinitfs/hooks/*.sh")
+	scripts, _ := afero.Glob(appFs, "/etc/postmarketos-mkinitfs/hooks/*.sh")
 	for _, script := range scripts {
 		files[script] = false
 	}
@@ -418,6 +461,7 @@ func getInitfsFiles(files misc.StringSet, devinfo deviceinfo.DeviceInfo) error {
 		"/usr/sbin/telnetd":   false,
 		"/sbin/kpartx":        false,
 		"/etc/deviceinfo":     false,
+		"/usr/bin/unudhcpd":   false,
 	}
 
 	// Hook files & scripts
@@ -444,11 +488,13 @@ func getInitfsModules(files misc.StringSet, devinfo deviceinfo.DeviceInfo, kerne
 
 	modDir := filepath.Join("/lib/modules", kernelVer)
 	if !exists(modDir) {
-		return errors.New("Kernel module directory not found: " + modDir)
+		// dir /lib/modules/<kernel> if kernel built without module support, so just print a message
+		log.Printf("-- kernel module directory not found: %q, not including modules", modDir)
+		return nil
 	}
 
 	// modules.* required by modprobe
-	modprobeFiles, _ := filepath.Glob(filepath.Join(modDir, "modules.*"))
+	modprobeFiles, _ := afero.Glob(appFs, filepath.Join(modDir, "modules.*"))
 	for _, file := range modprobeFiles {
 		files[file] = false
 	}
@@ -467,28 +513,26 @@ func getInitfsModules(files misc.StringSet, devinfo deviceinfo.DeviceInfo, kerne
 		if file == "" {
 			// item is a directory
 			dir = filepath.Join(modDir, dir)
-			dirs, _ := filepath.Glob(dir)
+			dirs, _ := afero.Glob(appFs, dir)
 			for _, d := range dirs {
 				if err := getModulesInDir(files, d); err != nil {
 					log.Print("Unable to get modules in dir: ", d)
 					return err
 				}
 			}
-			continue
 		} else if dir == "" {
 			// item is a module name
 			if err := getModule(files, file, modDir); err != nil {
 				log.Print("Unable to get module: ", file)
 				return err
 			}
-			continue
 		} else {
 			log.Printf("Unknown module entry: %q", item)
 		}
 	}
 
 	// deviceinfo modules
-	for _, module := range strings.Fields(devinfo.Deviceinfo_modules_initfs) {
+	for _, module := range strings.Fields(devinfo.ModulesInitfs) {
 		if err := getModule(files, module, modDir); err != nil {
 			log.Print("Unable to get modules from deviceinfo")
 			return err
@@ -496,9 +540,9 @@ func getInitfsModules(files misc.StringSet, devinfo deviceinfo.DeviceInfo, kerne
 	}
 
 	// /etc/postmarketos-mkinitfs/modules/*.modules
-	initfsModFiles, _ := filepath.Glob("/etc/postmarketos-mkinitfs/modules/*.modules")
+	initfsModFiles, _ := afero.Glob(appFs, "/etc/postmarketos-mkinitfs/modules/*.modules")
 	for _, modFile := range initfsModFiles {
-		f, err := os.Open(modFile)
+		f, err := appFs.Open(modFile)
 		if err != nil {
 			log.Print("getInitfsModules: unable to open mkinitfs modules file: ", modFile)
 			return err
@@ -517,10 +561,10 @@ func getInitfsModules(files misc.StringSet, devinfo deviceinfo.DeviceInfo, kerne
 }
 
 func getKernelReleaseFile() (string, error) {
-	files, _ := filepath.Glob("/usr/share/kernel/*/kernel.release")
+	files, _ := afero.Glob(appFs, "/usr/share/kernel/*/kernel.release")
 	// only one kernel flavor supported
 	if len(files) != 1 {
-		return "", errors.New(fmt.Sprintf("Only one kernel release/flavor is supported, found: %q", files))
+		return "", fmt.Errorf("only one kernel release/flavor is supported, found: %q", files)
 	}
 
 	return files[0], nil
@@ -534,7 +578,7 @@ func getKernelVersion() (string, error) {
 		return version, err
 	}
 
-	contents, err := os.ReadFile(releaseFile)
+	contents, err := afero.ReadFile(appFs, releaseFile)
 	if err != nil {
 		return version, err
 	}
@@ -570,7 +614,7 @@ func generateInitfs(name string, path string, kernVer string, devinfo deviceinfo
 
 	// splash images
 	log.Println("- Including splash images")
-	splashFiles, _ := filepath.Glob("/usr/share/postmarketos-splashes/*.ppm.gz")
+	splashFiles, _ := afero.Glob(appFs, "/usr/share/postmarketos-splashes/*.ppm.gz")
 	for _, file := range splashFiles {
 		// splash images are expected at /<file>
 		if err := initfsArchive.AddFile(file, filepath.Join("/", filepath.Base(file))); err != nil {
@@ -610,17 +654,11 @@ func generateInitfsExtra(name string, path string, devinfo deviceinfo.DeviceInfo
 }
 
 func stripExts(file string) string {
-	for {
+	return strings.Split(file, ".")[0]
-		if filepath.Ext(file) == "" {
-			break
-		}
-		file = strings.Trim(file, filepath.Ext(file))
-	}
-	return file
 }
 
 func getModulesInDir(files misc.StringSet, modPath string) error {
-	err := filepath.Walk(modPath, func(path string, f os.FileInfo, err error) error {
+	err := afero.Walk(appFs, modPath, func(path string, f os.FileInfo, err error) error {
 		// TODO: need to support more extensions?
 		if filepath.Ext(path) != ".ko" && filepath.Ext(path) != ".xz" {
 			return nil
@@ -643,22 +681,21 @@ func getModulesInDir(files misc.StringSet, modPath string) error {
 // anywhere
 func getModule(files misc.StringSet, modName string, modDir string) error {
 
-	deps, err := getModuleDeps(modName, modDir)
+	modDep := filepath.Join(modDir, "modules.dep")
-	if err != nil {
+	if !exists(modDep) {
-		return err
+		log.Fatal("Kernel module.dep not found: ", modDir)
 	}
 
-	if len(deps) == 0 {
+	fd, err := appFs.Open(modDep)
-		// retry and swap - and _ in module name
+	if err != nil {
-		if strings.Contains(modName, "-") {
+		log.Print("Unable to open modules.dep: ", modDep)
-			modName = strings.ReplaceAll(modName, "-", "_")
+		return err
-		} else {
+	}
-			modName = strings.ReplaceAll(modName, "_", "-")
+	defer fd.Close()
-		}
+
-		deps, err = getModuleDeps(modName, modDir)
+	deps, err := getModuleDeps(modName, fd)
-		if err != nil {
+	if err != nil {
-			return err
+		return err
-		}
 	}
 
 	for _, dep := range deps {
@@ -673,30 +710,27 @@ func getModule(files misc.StringSet, modName string, modDir string) error {
 	return err
 }
 
-func getModuleDeps(modName string, modDir string) ([]string, error) {
+// Get the canonicalized name for the module as represented in the given modules.dep io.reader
+func getModuleDeps(modName string, modulesDep io.Reader) ([]string, error) {
 	var deps []string
 
-	modDep := filepath.Join(modDir, "modules.dep")
+	// split the module name on - and/or _, build a regex for matching
-	if !exists(modDep) {
+	splitRe := regexp.MustCompile("[-_]+")
-		log.Fatal("Kernel module.dep not found: ", modDir)
+	modNameReStr := splitRe.ReplaceAllString(modName, "[-_]+")
-	}
+	re := regexp.MustCompile("^" + modNameReStr + "$")
 
-	fd, err := os.Open(modDep)
+	s := bufio.NewScanner(modulesDep)
-	if err != nil {
-		log.Print("Unable to open modules.dep: ", modDep)
-		return deps, err
-	}
-
-	defer fd.Close()
-	s := bufio.NewScanner(fd)
 	for s.Scan() {
 		fields := strings.Fields(s.Text())
-		fields[0] = strings.TrimSuffix(fields[0], ":")
+		if len(fields) == 0 {
-		if modName != filepath.Base(stripExts(fields[0])) {
 			continue
 		}
-		for _, modPath := range fields {
+		fields[0] = strings.TrimSuffix(fields[0], ":")
-			deps = append(deps, modPath)
+
+		found := re.FindAll([]byte(filepath.Base(stripExts(fields[0]))), -1)
+		if len(found) > 0 {
+			deps = append(deps, fields...)
+			break
 		}
 	}
 	if err := s.Err(); err != nil {

main_test.go

@@ -1,8 +1,13 @@
 // Copyright 2021 Clayton Craft <clayton@craftyguy.net>
 // SPDX-License-Identifier: GPL-3.0-or-later
+
 package main
 
 import (
+	"github.com/spf13/afero"
+	"gitlab.com/postmarketOS/postmarketos-mkinitfs/pkgs/misc"
+	"reflect"
+	"strings"
 	"testing"
 )
 
@@ -15,6 +20,7 @@ func TestStripExts(t *testing.T) {
 		{"file.tar.gz.xz.zip", "file"},
 		{"another_file", "another_file"},
 		{"a.b.c.d.e.f.g.h.i", "a"},
+		{"virtio_blk.ko", "virtio_blk"},
 	}
 	for _, table := range tables {
 		out := stripExts(table.in)
@@ -23,3 +29,177 @@ func TestStripExts(t *testing.T) {
 		}
 	}
 }
+
+func stringSlicesEqual(a []string, b []string) bool {
+	if len(a) != len(b) {
+		return false
+	}
+	for i, v := range a {
+		if v != b[i] {
+			return false
+		}
+	}
+	return true
+}
+
+var testModuleDep string = `
+kernel/sound/soc/codecs/snd-soc-msm8916-digital.ko:
+kernel/net/sched/act_ipt.ko.xz: kernel/net/netfilter/x_tables.ko.xz
+kernel/drivers/watchdog/watchdog.ko.xz:
+kernel/drivers/usb/serial/ir-usb.ko.xz: kernel/drivers/usb/serial/usbserial.ko.xz
+kernel/drivers/gpu/drm/scheduler/gpu-sched.ko.xz:
+kernel/drivers/hid/hid-alps.ko.xz:
+kernel/net/netfilter/xt_u32.ko.xz: kernel/net/netfilter/x_tables.ko.xz
+kernel/net/netfilter/xt_sctp.ko.xz: kernel/net/netfilter/x_tables.ko.xz
+kernel/drivers/hwmon/gl518sm.ko.xz:
+kernel/drivers/watchdog/dw_wdt.ko.xz: kernel/drivers/watchdog/watchdog.ko.xz
+kernel/net/bluetooth/hidp/hidp.ko.xz: kernel/net/bluetooth/bluetooth.ko.xz kernel/net/rfkill/rfkill.ko.xz kernel/crypto/ecdh_generic.ko.xz kernel/crypto/ecc.ko.xz
+kernel/fs/nls/nls_iso8859-1.ko.xz:
+kernel/net/vmw_vsock/vmw_vsock_virtio_transport.ko.xz: kernel/net/vmw_vsock/vmw_vsock_virtio_transport_common.ko.xz kernel/drivers/virtio/virtio.ko.xz kernel/drivers/virtio/virtio_ring.ko.xz kernel/net/vmw_vsock/vsock.ko.xz
+kernel/drivers/gpu/drm/panfrost/panfrost.ko.xz: kernel/drivers/gpu/drm/scheduler/gpu-sched.ko.xz
+kernel/drivers/gpu/drm/msm/msm.ko: kernel/drivers/gpu/drm/drm_kms_helper.ko
+`
+
+func TestGetModuleDeps(t *testing.T) {
+	tables := []struct {
+		in       string
+		expected []string
+	}{
+		{"nls-iso8859-1", []string{"kernel/fs/nls/nls_iso8859-1.ko.xz"}},
+		{"gpu_sched", []string{"kernel/drivers/gpu/drm/scheduler/gpu-sched.ko.xz"}},
+		{"dw-wdt", []string{"kernel/drivers/watchdog/dw_wdt.ko.xz",
+			"kernel/drivers/watchdog/watchdog.ko.xz"}},
+		{"gl518sm", []string{"kernel/drivers/hwmon/gl518sm.ko.xz"}},
+		{"msm", []string{"kernel/drivers/gpu/drm/msm/msm.ko",
+			"kernel/drivers/gpu/drm/drm_kms_helper.ko"}},
+	}
+	for _, table := range tables {
+		out, err := getModuleDeps(table.in, strings.NewReader(testModuleDep))
+		if err != nil {
+			t.Errorf("unexpected error with input: %q, error: %q", table.expected, err)
+		}
+		if !stringSlicesEqual(out, table.expected) {
+			t.Errorf("Expected: %q, got: %q", table.expected, out)
+		}
+	}
+}
+
+func setUpFakeFs() {
+	fs := afero.NewMemMapFs()
+	initFs(fs)
+
+	fs.Mkdir("/foo", 0755)
+	afero.WriteFile(fs, "/foo/foo.txt", []byte("foo"), 0644)
+
+	fs.Mkdir("/foo/bar", 0755)
+	afero.WriteFile(fs, "/foo/bar/bar.txt", []byte("bar"), 0644)
+	afero.WriteFile(fs, "/foo/bar/foo.txt", []byte("foo"), 0644)
+}
+
+func TestGetFileWithFilePath(t *testing.T) {
+	setUpFakeFs()
+
+	actual := make(misc.StringSet)
+	file := "/foo/bar/bar.txt"
+	if err := getFile(actual, file, true); err != nil {
+		t.Errorf("Unexpected error when collecting file %q, error: %q", file, err)
+	}
+
+	expected := make(misc.StringSet)
+	expected["/foo/bar/bar.txt"] = false
+
+	if !reflect.DeepEqual(expected, actual) {
+		t.Errorf("Expected: %v, got: %v", expected, actual)
+	}
+}
+
+func TestGetFileWithGlobThatExpandsToSingleFile(t *testing.T) {
+	setUpFakeFs()
+
+	actual := make(misc.StringSet)
+	file := "/foo/bar/bar.*"
+	if err := getFile(actual, file, true); err != nil {
+		t.Errorf("Unexpected error when collecting file %q, error: %q", file, err)
+	}
+
+	expected := make(misc.StringSet)
+	expected["/foo/bar/bar.txt"] = false
+
+	if !reflect.DeepEqual(expected, actual) {
+		t.Errorf("Expected: %v, got: %v", expected, actual)
+	}
+}
+
+func TestGetFileWithGlobThatExpandsToMultipleFiles(t *testing.T) {
+	setUpFakeFs()
+
+	actual := make(misc.StringSet)
+	file := "/foo/bar/*.txt"
+	if err := getFile(actual, file, true); err != nil {
+		t.Errorf("Unexpected error when collecting file %q, error: %q", file, err)
+	}
+
+	expected := make(misc.StringSet)
+	expected["/foo/bar/bar.txt"] = false
+	expected["/foo/bar/foo.txt"] = false
+
+	if !reflect.DeepEqual(expected, actual) {
+		t.Errorf("Expected: %v, got: %v", expected, actual)
+	}
+}
+
+func TestGetFileWithDirectoryPath(t *testing.T) {
+	setUpFakeFs()
+
+	actual := make(misc.StringSet)
+	file := "/foo"
+	if err := getFile(actual, file, true); err != nil {
+		t.Errorf("Unexpected error when collecting file %q, error: %q", file, err)
+	}
+
+	expected := make(misc.StringSet)
+	expected["/foo/foo.txt"] = false
+	expected["/foo/bar/bar.txt"] = false
+	expected["/foo/bar/foo.txt"] = false
+
+	if !reflect.DeepEqual(expected, actual) {
+		t.Errorf("Expected: %v, got: %v", expected, actual)
+	}
+}
+
+func TestGetFileWithGlobThatExpandsToSingleDirectory(t *testing.T) {
+	setUpFakeFs()
+
+	actual := make(misc.StringSet)
+	file := "/foo/b*"
+	if err := getFile(actual, file, true); err != nil {
+		t.Errorf("Unexpected error when collecting file %q, error: %q", file, err)
+	}
+
+	expected := make(misc.StringSet)
+	expected["/foo/bar/bar.txt"] = false
+	expected["/foo/bar/foo.txt"] = false
+
+	if !reflect.DeepEqual(expected, actual) {
+		t.Errorf("Expected: %v, got: %v", expected, actual)
+	}
+}
+
+func TestGetFileWithGlobThatExpandsToDirectoriesAndFiles(t *testing.T) {
+	setUpFakeFs()
+
+	actual := make(misc.StringSet)
+	file := "/foo/*"
+	if err := getFile(actual, file, true); err != nil {
+		t.Errorf("Unexpected error when collecting file %q, error: %q", file, err)
+	}
+
+	expected := make(misc.StringSet)
+	expected["/foo/foo.txt"] = false
+	expected["/foo/bar/bar.txt"] = false
+	expected["/foo/bar/foo.txt"] = false
+
+	if !reflect.DeepEqual(expected, actual) {
+		t.Errorf("Expected: %v, got: %v", expected, actual)
+	}
+}

pkgs/archive/archive.go

@@ -1,19 +1,17 @@
 // Copyright 2021 Clayton Craft <clayton@craftyguy.net>
 // SPDX-License-Identifier: GPL-3.0-or-later
+
 package archive
 
 import (
 	"bytes"
 	"compress/flate"
-	"crypto/sha256"
-	"encoding/hex"
 	"github.com/cavaliercoder/go-cpio"
 	"github.com/klauspost/pgzip"
 	"gitlab.com/postmarketOS/postmarketos-mkinitfs/pkgs/misc"
 	"io"
 	"log"
 	"os"
-	"os/exec"
 	"path/filepath"
 	"strings"
 )
@@ -52,12 +50,6 @@ func (archive *Archive) Write(path string, mode os.FileMode) error {
 		return err
 	}
 
-	// test the archive to make sure it's valid
-	if err := test(path); err != nil {
-		log.Print("Verification of archive failed!")
-		return err
-	}
-
 	if err := os.Chmod(path, mode); err != nil {
 		return err
 	}
@@ -65,38 +57,6 @@ func (archive *Archive) Write(path string, mode os.FileMode) error {
 	return nil
 }
 
-func checksum(path string) (string, error) {
-	var sum string
-
-	buf := make([]byte, 64*1024)
-	sha256 := sha256.New()
-	fd, err := os.Open(path)
-	defer fd.Close()
-
-	if err != nil {
-		log.Print("Unable to checksum: ", path)
-		return sum, err
-	}
-
-	// Read file in chunks
-	for {
-		bytes, err := fd.Read(buf)
-		if bytes > 0 {
-			_, err := sha256.Write(buf[:bytes])
-			if err != nil {
-				log.Print("Unable to checksum: ", path)
-				return sum, err
-			}
-		}
-
-		if err == io.EOF {
-			break
-		}
-	}
-	sum = hex.EncodeToString(sha256.Sum(nil))
-	return sum, nil
-}
-
 func (archive *Archive) AddFile(file string, dest string) error {
 	if err := archive.addDir(filepath.Dir(dest)); err != nil {
 		return err
@@ -144,6 +104,9 @@ func (archive *Archive) AddFile(file string, dest string) error {
 		// make sure target is an absolute path
 		if !filepath.IsAbs(target) {
 			target, err = misc.RelativeSymlinkTargetToDir(target, filepath.Dir(file))
+			if err != nil {
+				return err
+			}
 		}
 		// TODO: add verbose mode, print stuff like this:
 		// log.Printf("symlink: %q, target: %q", file, target)
@@ -180,19 +143,6 @@ func (archive *Archive) AddFile(file string, dest string) error {
 	return nil
 }
 
-// Use busybox gzip to test archive
-func test(path string) error {
-	cmd := exec.Command("busybox", "gzip", "-t", path)
-	cmd.Stdout = os.Stdout
-	cmd.Stderr = os.Stderr
-	if err := cmd.Run(); err != nil {
-		log.Print("'boot-deploy' command failed: ")
-		return err
-	}
-
-	return nil
-}
-
 func (archive *Archive) writeCompressed(path string, mode os.FileMode) error {
 	// TODO: support other compression formats, based on deviceinfo
 	fd, err := os.Create(path)

pkgs/deviceinfo/deviceinfo.go

@@ -1,53 +1,126 @@
 // Copyright 2021 Clayton Craft <clayton@craftyguy.net>
 // SPDX-License-Identifier: GPL-3.0-or-later
+
 package deviceinfo
 
 import (
-	"errors"
+	"bufio"
-	"github.com/BurntSushi/toml"
+	"fmt"
+	"io"
+	"log"
 	"os"
+	"reflect"
+	"strings"
 )
 
-// Note: fields must be exported (start with capital letter)
-// https://github.com/BurntSushi/toml/issues/121
 type DeviceInfo struct {
-	Deviceinfo_append_dtb                      string
+	AppendDtb                     string
-	Deviceinfo_arch                            string
+	Arch                          string
-	Deviceinfo_bootimg_append_seandroidenforce string
+	BootimgAppendSEAndroidEnforce string
-	Deviceinfo_bootimg_blobpack                string
+	BootimgBlobpack               string
-	Deviceinfo_bootimg_dtb_second              string
+	BootimgDtbSecond              string
-	Deviceinfo_bootimg_mtk_mkimage             string
+	BootimgMtkMkimage             string
-	Deviceinfo_bootimg_pxa                     string
+	BootimgPxa                    string
-	Deviceinfo_bootimg_qcdt                    string
+	BootimgQcdt                   string
-	Deviceinfo_dtb                             string
+	Dtb                           string
-	Deviceinfo_flash_offset_base               string
+	FlashKernelOnUpdate           string
-	Deviceinfo_flash_offset_kernel             string
+	FlashOffsetBase               string
-	Deviceinfo_flash_offset_ramdisk            string
+	FlashOffsetKernel             string
-	Deviceinfo_flash_offset_second             string
+	FlashOffsetRamdisk            string
-	Deviceinfo_flash_offset_tags               string
+	FlashOffsetSecond             string
-	Deviceinfo_flash_pagesize                  string
+	FlashOffsetTags               string
-	Deviceinfo_generate_bootimg                string
+	FlashPagesize                 string
-	Deviceinfo_generate_legacy_uboot_initfs    string
+	GenerateBootimg               string
-	Deviceinfo_mesa_driver                     string
+	GenerateLegacyUbootInitfs     string
-	Deviceinfo_mkinitfs_postprocess            string
+	InitfsCompression             string
-	Deviceinfo_initfs_compression              string
+	KernelCmdline                 string
-	Deviceinfo_kernel_cmdline                  string
+	LegacyUbootLoadAddress        string
-	Deviceinfo_legacy_uboot_load_address       string
+	MesaDriver                    string
-	Deviceinfo_modules_initfs                  string
+	MkinitfsPostprocess           string
-	Deviceinfo_flash_kernel_on_update          string
+	ModulesInitfs                 string
 }
 
-func ReadDeviceinfo() (DeviceInfo, error) {
+func ReadDeviceinfo(file string) (DeviceInfo, error) {
-	file := "/etc/deviceinfo"
 	var deviceinfo DeviceInfo
 
-	_, err := os.Stat(file)
+	fd, err := os.Open(file)
 	if err != nil {
-		return deviceinfo, errors.New("Unable to find deviceinfo: " + file)
-	}
-
-	if _, err := toml.DecodeFile(file, &deviceinfo); err != nil {
 		return deviceinfo, err
 	}
+	defer fd.Close()
+
+	if err := unmarshal(fd, &deviceinfo); err != nil {
+		return deviceinfo, err
+	}
+
 	return deviceinfo, nil
 }
+
+// Unmarshals a deviceinfo into a DeviceInfo struct
+func unmarshal(r io.Reader, devinfo *DeviceInfo) error {
+	s := bufio.NewScanner(r)
+	for s.Scan() {
+		line := s.Text()
+		if strings.HasPrefix(line, "#") {
+			continue
+		}
+
+		// line isn't setting anything, so just ignore it
+		if !strings.Contains(line, "=") {
+			continue
+		}
+
+		// sometimes line has a comment at the end after setting an option
+		line = strings.SplitN(line, "#", 2)[0]
+		line = strings.TrimSpace(line)
+
+		// must support having '=' in the value (e.g. kernel cmdline)
+		parts := strings.SplitN(line, "=", 2)
+		if len(parts) != 2 {
+			return fmt.Errorf("error parsing deviceinfo line, invalid format: %s", line)
+		}
+
+		name, val := parts[0], parts[1]
+		val = strings.ReplaceAll(val, "\"", "")
+
+		if name == "deviceinfo_format_version" && val != "0" {
+			return fmt.Errorf("deviceinfo format version %q is not supported", val)
+		}
+
+		fieldName := nameToField(name)
+
+		if fieldName == "" {
+			return fmt.Errorf("error parsing deviceinfo line, invalid format: %s", line)
+		}
+
+		field := reflect.ValueOf(devinfo).Elem().FieldByName(fieldName)
+		if !field.IsValid() {
+			// an option that meets the deviceinfo "specification", but isn't
+			// one we care about in this module
+			continue
+		}
+		field.SetString(val)
+	}
+	if err := s.Err(); err != nil {
+		log.Print("unable to parse deviceinfo: ", err)
+		return err
+	}
+
+	return nil
+}
+
+// Convert string into the string format used for DeviceInfo fields.
+// Note: does not test that the resulting field name is a valid field in the
+// DeviceInfo struct!
+func nameToField(name string) string {
+	var field string
+	parts := strings.Split(name, "_")
+	for _, p := range parts {
+		if p == "deviceinfo" {
+			continue
+		}
+		field = field + strings.Title(p)
+	}
+
+	return field
+}

pkgs/deviceinfo/deviceinfo_test.go

@@ -0,0 +1,81 @@
+// Copyright 2021 Clayton Craft <clayton@craftyguy.net>
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+package deviceinfo
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+	"testing"
+)
+
+// Test conversion of name to DeviceInfo struct field format
+func TestNameToField(t *testing.T) {
+	tables := []struct {
+		in       string
+		expected string
+	}{
+		{"deviceinfo_dtb", "Dtb"},
+		{"dtb", "Dtb"},
+		{"deviceinfo_modules_initfs", "ModulesInitfs"},
+		{"modules_initfs", "ModulesInitfs"},
+		{"deviceinfo_modules_initfs___", "ModulesInitfs"},
+	}
+
+	for _, table := range tables {
+		out := nameToField(table.in)
+		if out != table.expected {
+			t.Errorf("expected: %q, got: %q", table.expected, out)
+		}
+	}
+}
+
+// Test unmarshalling with lines in deviceinfo
+func TestUnmarshal(t *testing.T) {
+	tables := []struct {
+		// field is just used for reflection within the test, so it must be a
+		// valid DeviceInfo field
+		field    string
+		in       string
+		expected string
+	}{
+		{"ModulesInitfs", "deviceinfo_modules_initfs=\"panfrost foo bar bazz\"\n", "panfrost foo bar bazz"},
+		{"ModulesInitfs", "deviceinfo_modules_initfs=\"panfrost foo bar bazz\"", "panfrost foo bar bazz"},
+		// line with multiple '='
+		{"KernelCmdline",
+			"deviceinfo_kernel_cmdline=\"PMOS_NO_OUTPUT_REDIRECT fw_devlink=off nvme_core.default_ps_max_latency_us=5500 pcie_aspm.policy=performance\"\n",
+			"PMOS_NO_OUTPUT_REDIRECT fw_devlink=off nvme_core.default_ps_max_latency_us=5500 pcie_aspm.policy=performance"},
+		// empty option
+		{"ModulesInitfs", "deviceinfo_modules_initfs=\"\"\n", ""},
+		{"Dtb", "deviceinfo_dtb=\"freescale/imx8mq-librem5-r2 freescale/imx8mq-librem5-r3 freescale/imx8mq-librem5-r4\"\n",
+			"freescale/imx8mq-librem5-r2 freescale/imx8mq-librem5-r3 freescale/imx8mq-librem5-r4"},
+		// valid deviceinfo line, just not used in this module
+		{"", "deviceinfo_codename=\"pine64-pinebookpro\"", ""},
+		// line with comment at the end
+		{"MesaDriver", "deviceinfo_mesa_driver=\"panfrost\"  # this is a nice driver", "panfrost"},
+		{"", "# this is a comment!\n", ""},
+		// empty lines are fine
+		{"", "", ""},
+		// line with whitepace characters only
+		{"", " \t \n\r", ""},
+	}
+	var d DeviceInfo
+	for _, table := range tables {
+		testName := fmt.Sprintf("unmarshal::'%s':", strings.ReplaceAll(table.in, "\n", "\\n"))
+		if err := unmarshal(strings.NewReader(table.in), &d); err != nil {
+			t.Errorf("%s received an unexpected err: ", err)
+		}
+
+		// Check against expected value
+		field := reflect.ValueOf(&d).Elem().FieldByName(table.field)
+		out := ""
+		if table.field != "" {
+			out = field.String()
+		}
+		if out != table.expected {
+			t.Errorf("%s expected: %q, got: %q", testName, table.expected, out)
+		}
+	}
+
+}

pkgs/misc/misc.go

@@ -1,5 +1,6 @@
 // Copyright 2021 Clayton Craft <clayton@craftyguy.net>
 // SPDX-License-Identifier: GPL-3.0-or-later
+
 package misc
 
 import (