Add prefix to the xattr

common/hash_data_adapter_xattr.go

@@ -15,6 +15,8 @@ import (
 
 // ===== OS-Specific hash adapter changes =====
 
+const AzCopyHashXattrName = "user" + AzCopyHashDataStream
+
 func (HashStorageMode) XAttr() HashStorageMode { return 11 } // It's OK if OS-specific options overlap, but we should leave some room for the agnostic options
 
 func (e HashStorageMode) osDefault() HashStorageMode { return e.XAttr() }
@@ -52,7 +54,7 @@ func (a *XAttrHashDataAdapter) GetHashData(relativePath string) (*SyncHashData,
 
 	buf := make([]byte, 512) // 512 bytes should be plenty of space
 retry:
-	sz, err := unix.Getxattr(metaFile, strings.TrimPrefix(AzCopyHashDataStream, "."), buf) // MacOS doesn't take well to the dot(?)
+	sz, err := unix.Getxattr(metaFile, AzCopyHashXattrName, buf) // MacOS doesn't take well to the dot(?)
 	if err != nil {
 		if err == unix.ERANGE { // But just in case, let's safeguard against it and re-call with a larger buffer.
 			buf = make([]byte, len(buf) * 2)
@@ -89,7 +91,7 @@ func (a *XAttrHashDataAdapter) SetHashData(relativePath string, data *SyncHashDa
 		return fmt.Errorf("failed to marshal xattr: %w", err)
 	}
 
-	err = unix.Setxattr(metaFile, strings.TrimPrefix(AzCopyHashDataStream, "."), buf, 0) // Default flags == create or replace
+	err = unix.Setxattr(metaFile, AzCopyHashXattrName, buf, 0) // Default flags == create or replace
 	if err != nil {
 		return fmt.Errorf("failed to write xattr: %w; consider utilizing an OS-agnostic hash storage mode", err)
 	}