cmd/sync: fix the bug where empty files are always synchronized (#4223)

juicedata · Dec 4, 2023 · 1a82b80 · 1a82b80
1 parent 541386f
commit 1a82b80
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Showing 2 changed files with 16 additions and 0 deletions.
diff --git a/pkg/object/prefix.go b/pkg/object/prefix.go
@@ -207,3 +207,11 @@ func (p *withPrefix) ListUploads(marker string) ([]*PendingPart, string, error)
 }
 
 var _ ObjectStorage = &withPrefix{}
+
+func IsFileSystem(object ObjectStorage) bool {
+	if o, ok := object.(*withPrefix); ok {
+		object = o.os
+	}
+	_, ok := object.(FileSystem)
+	return ok
+}
diff --git a/pkg/sync/sync.go b/pkg/sync/sync.go
@@ -405,6 +405,14 @@ SINGLE:
 	var in io.ReadCloser
 	var err error
 	if size == 0 {
+		if object.IsFileSystem(src) {
+			// for check permissions
+			r, err := src.Get(key, 0, -1)
+			if err != nil {
+				return err
+			}
+			_ = r.Close()
+		}
 		in = io.NopCloser(bytes.NewReader(nil))
 	} else {
 		in, err = src.Get(key, 0, size)