4 files changed, 11 insertions, 10 deletions
diff --git a/cmd/earlyinit/modprobe.go b/cmd/earlyinit/modprobe.go
index 5a9868d4..8addf973 100644
--- a/cmd/earlyinit/modprobe.go
+++ b/cmd/earlyinit/modprobe.go
@@ -57,8 +57,8 @@ func dispatchModprobe(
 			continue
 		}
 
-		var exitError *exec.ExitError
-		if !errors.As(err, &exitError) || exitError == nil {
+		exitError, ok := errors.AsType[*exec.ExitError](err)
+		if !ok || exitError == nil {
 			r.Dispatch(report.Degraded, "invoke modprobe", err)
 			continue
 		}
diff --git a/cmd/hakurei/json.go b/cmd/hakurei/json.go
index 30eb4334..d0d978d3 100644
--- a/cmd/hakurei/json.go
+++ b/cmd/hakurei/json.go
@@ -7,7 +7,8 @@ import (
 	"strconv"
 )
 
-// decodeJSON decodes json from r and stores it in v. A non-nil error results in a call to fatal.
+// decodeJSON decodes json from r and stores it in v. A non-nil error results in
+// a call to fatal.
 func decodeJSON(fatal func(v ...any), op string, r io.Reader, v any) {
 	err := json.NewDecoder(r).Decode(v)
 	if err == nil {
@@ -47,14 +48,14 @@ func encodeJSON(fatal func(v ...any), output io.Writer, short bool, v any) {
 	}
 
 	if err := encoder.Encode(v); err != nil {
-		var marshalerError *json.MarshalerError
-		if errors.As(err, &marshalerError) && marshalerError != nil {
+		if e, ok := errors.AsType[*json.MarshalerError](err); ok && e != nil {
 			// this likely indicates an implementation error in hst
-			fatal("cannot encode json for " + marshalerError.Type.String() + ": " + marshalerError.Err.Error())
+			fatal("cannot encode json for " + e.Type.String() + ": " + e.Err.Error())
 			return
 		}
 
-		// UnsupportedTypeError, UnsupportedValueError: incorrect usage, does not need to be handled
+		// UnsupportedTypeError, UnsupportedValueError: incorrect usage, does
+		// not need to be handled
 		fatal("cannot write json: " + err.Error())
 	}
 }
diff --git a/cmd/mbf/internal/pkgserver/search.go b/cmd/mbf/internal/pkgserver/search.go
index 5756512f..15947804 100644
--- a/cmd/mbf/internal/pkgserver/search.go
+++ b/cmd/mbf/internal/pkgserver/search.go
@@ -74,7 +74,7 @@ func (s *searchCache) clean() {
 }
 func indexsum(in [][]int) int {
 	sum := 0
-	for i := 0; i < len(in); i++ {
+	for i := range in {
 		sum += in[i][1] - in[i][0]
 	}
 	return sum
diff --git a/cmd/sharefs/fuse.go b/cmd/sharefs/fuse.go
index c9855eb7..5dfbf385 100644
--- a/cmd/sharefs/fuse.go
+++ b/cmd/sharefs/fuse.go
@@ -508,8 +508,8 @@ func _main(s ...string) (exitCode int) {
 
 		if !z.AllowOrphan {
 			if err := z.Wait(); err != nil {
-				var exitError *exec.ExitError
-				if !errors.As(err, &exitError) || exitError == nil {
+				exitError, ok := errors.AsType[*exec.ExitError](err)
+				if !ok || exitError == nil {
 					log.Println(err)
 					return 5
 				}