Return ENAMETOOLONG when name is too long

This allows more pjdfstests to pass. References GoogleCloudPlatform#590.
gaul · Dec 23, 2022 · 5d0bb5c · 5d0bb5c
1 parent 98f27f5
commit 5d0bb5c
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/internal/fs/inode/dir.go b/internal/fs/inode/dir.go
@@ -19,6 +19,7 @@ import (
 	"fmt"
 	"path"
 	"strings"
+	"syscall"
 	"time"
 
 	"github.com/googlecloudplatform/gcsfuse/internal/gcsx"
@@ -421,6 +422,10 @@ const ConflictingFileNameSuffix = "\n"
 
 // LOCKS_REQUIRED(d)
 func (d *dirInode) LookUpChild(ctx context.Context, name string) (*Core, error) {
+	if index := strings.LastIndex(name, "/"); index != -1 && len(name) - index > 255 {
+		return nil, syscall.ENAMETOOLONG // TODO: fuse.ENAMETOOLONG
+	}
+
 	// Is this a conflict marker name?
 	if strings.HasSuffix(name, ConflictingFileNameSuffix) {
 		return d.lookUpConflicting(ctx, name)