misc: remove functions now in osutils, update references in project

internal/misc/getfiles.go

@@ -5,6 +5,8 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+
+	"gitlab.com/postmarketOS/postmarketos-mkinitfs/internal/osutil"
 )
 
 func GetFiles(list []string, required bool) (files []string, err error) {
@@ -150,7 +152,7 @@ func getBinaryDeps(file string) ([]string, error) {
 			return nil, fmt.Errorf("getBinaryDeps: unable to read symlink %q: %w", file, err)
 		}
 		if !filepath.IsAbs(target) {
-			target, err = RelativeSymlinkTargetToDir(target, filepath.Dir(file))
+			target, err = osutil.RelativeSymlinkTargetToDir(target, filepath.Dir(file))
 			if err != nil {
 				return nil, err
 			}

internal/misc/misc.go

@@ -4,53 +4,11 @@
 package misc
 
 import (
-	"fmt"
 	"log"
 	"os"
-	"path/filepath"
-	"strings"
 	"time"
-
-	"golang.org/x/sys/unix"
 )
 
-// Converts a relative symlink target path (e.g. ../../lib/foo.so), that is
-// absolute path
-func RelativeSymlinkTargetToDir(symPath string, dir string) (string, error) {
-	var path string
-
-	oldWd, err := os.Getwd()
-	if err != nil {
-		log.Print("Unable to get current working dir")
-		return path, err
-	}
-
-	if err := os.Chdir(dir); err != nil {
-		log.Print("Unable to change to working dir: ", dir)
-		return path, err
-	}
-
-	path, err = filepath.Abs(symPath)
-	if err != nil {
-		log.Print("Unable to resolve abs path to: ", symPath)
-		return path, err
-	}
-
-	if err := os.Chdir(oldWd); err != nil {
-		log.Print("Unable to change to old working dir")
-		return path, err
-	}
-
-	return path, nil
-}
-
-func FreeSpace(path string) (uint64, error) {
-	var stat unix.Statfs_t
-	unix.Statfs(path, &stat)
-	size := stat.Bavail * uint64(stat.Bsize)
-	return size, nil
-}
-
 // Merge the contents of "b" into "a", overwriting any previously existing keys
 // in "a"
 func Merge(a map[string]string, b map[string]string) {
@@ -89,32 +47,6 @@ func TimeFunc(start time.Time, name string) {
 	log.Printf("%s completed in: %s", name, elapsed)
 }
 
-func getKernelReleaseFile() (string, error) {
-	files, _ := filepath.Glob("/usr/share/kernel/*/kernel.release")
-	// only one kernel flavor supported
-	if len(files) != 1 {
-		return "", fmt.Errorf("only one kernel release/flavor is supported, found: %q", files)
-	}
-
-	return files[0], nil
-}
-
-func GetKernelVersion() (string, error) {
-	var version string
-
-	releaseFile, err := getKernelReleaseFile()
-	if err != nil {
-		return version, err
-	}
-
-	contents, err := os.ReadFile(releaseFile)
-	if err != nil {
-		return version, err
-	}
-
-	return strings.TrimSpace(string(contents)), nil
-}
-
 // Exists tests if the given file/dir exists or not
 func Exists(file string) bool {
 	if _, err := os.Stat(file); err == nil {