fs/ntfs3: Make hidedotfiles mount option work when renaming files

Currently, the hidedotfiles mount option only has an effect when
creating new files. Removing or adding the starting dot when moving
or renaming files does not update the hidden attribute.

Make hidedotfiles also set or uset the hidden attribute when a file
gains or loses its starting dot by being moved or renamed.

Signed-off-by: Daniel Pinto <danielpinto52@gmail.com>
Signed-off-by: Konstantin Komarov <almaz.alexandrovich@paragon-software.com>

fs/ntfs3/frecord.c

@@ -3023,6 +3023,15 @@ int ni_add_name(struct ntfs_inode *dir_ni, struct ntfs_inode *ni,
 	    !valid_windows_name(sbi, (struct le_str *)&de_name->name_len))
 		return -EINVAL;
 
+	/* If option "hidedotfiles" then set hidden attribute for dot files. */
+	if (ni->mi.sbi->options->hide_dot_files) {
+		if (de_name->name_len > 0 &&
+		    le16_to_cpu(de_name->name[0]) == '.')
+			ni->std_fa |= FILE_ATTRIBUTE_HIDDEN;
+		else
+			ni->std_fa &= ~FILE_ATTRIBUTE_HIDDEN;
+	}
+
 	mi_get_ref(&ni->mi, &de->ref);
 	mi_get_ref(&dir_ni->mi, &de_name->home);