misc:TimeFunc: reduce printed time precision

Now:
        10:57:41.737665 initramfs-extra completed in: 0.33s
        ...
        10:57:42.008587 boot-deploy completed in: 0.27s
        10:57:42.012973 mkinitfs completed in: 0.90s

Times is just truncated, not rounding, since it's simpler (no dependency
on the math module), and I'm not sure if anyone cares for what this
function prints. If there is a desire to return to higher precision
later, it could be enabled by a new flag.

fixes https://gitlab.com/postmarketOS/postmarketos-mkinitfs/-/issues/25

internal/archive/archive.go

@@ -44,11 +44,11 @@ const (
 )
 
 type Archive struct {
-	items           archiveItems
 	cpioWriter      *cpio.Writer
 	buf             *bytes.Buffer
 	compress_format CompressFormat
 	compress_level  CompressLevel
+	items           archiveItems
 }
 
 func New(format CompressFormat, level CompressLevel) (*Archive, error) {
@@ -64,8 +64,8 @@ func New(format CompressFormat, level CompressLevel) (*Archive, error) {
 }
 
 type archiveItem struct {
-	sourcePath string
 	header     *cpio.Header
+	sourcePath string
 }
 
 type archiveItems struct {

internal/filelist/modules/modules.go

@@ -16,8 +16,8 @@ import (
 )
 
 type Modules struct {
-	modulesList     []string
 	modulesListPath string
+	modulesList     []string
 }
 
 // New returns a new Modules that will use the given moduleto provide a list
@@ -30,8 +30,6 @@ func New(modulesList []string, modulesListPath string) *Modules {
 }
 
 func (m *Modules) List() (*filelist.FileList, error) {
-	log.Printf("- Searching for kernel modules from %s", m.modulesListPath)
-
 	kernVer, err := osutil.GetKernelVersion()
 	if err != nil {
 		return nil, err
@@ -55,17 +53,21 @@ func (m *Modules) List() (*filelist.FileList, error) {
 	}
 
 	// slurp up given list of modules
+	if len(m.modulesList) > 0 {
+		log.Printf("-- Including kernel modules from deviceinfo")
 		for _, module := range m.modulesList {
 			if modFilelist, err := getModule(module, modDir); err != nil {
-			return nil, fmt.Errorf("getInitfsModules: unable to get modules from deviceinfo: %w", err)
+				return nil, fmt.Errorf("unable to get modules from deviceinfo: %w", err)
 			} else {
 				for _, file := range modFilelist {
 					files.Add(file, file)
 				}
 			}
 		}
+	}
 
 	// slurp up modules from lists in modulesListPath
+	log.Printf("- Searching for kernel modules from %s", m.modulesListPath)
 	fileInfo, err := os.ReadDir(m.modulesListPath)
 	if err != nil {
 		log.Println("-- Unable to find dir, skipping...")
@@ -126,7 +128,11 @@ func slurpModules(fd io.Reader, modDir string) (*filelist.FileList, error) {
 }
 
 func getModulesInDir(modPath string) (files []string, err error) {
-	err = filepath.Walk(modPath, func(path string, f os.FileInfo, err error) error {
+	err = filepath.Walk(modPath, func(path string, _ os.FileInfo, err error) error {
+		if err != nil {
+			// Unable to walk path
+			return err
+		}
 		if filepath.Ext(path) != ".ko" && filepath.Ext(path) != ".xz" {
 			return nil
 		}

internal/misc/misc.go

@@ -45,7 +45,7 @@ func RemoveDuplicates(in []string) (out []string) {
 //	defer misc.TimeFunc(time.Now(), "foo")
 func TimeFunc(start time.Time, name string) {
 	elapsed := time.Since(start)
-	log.Printf("%s completed in: %s", name, elapsed)
+	log.Printf("%s completed in: %.2fs", name, elapsed.Seconds())
 }
 
 // Exists tests if the given file/dir exists or not. Returns any errors related