another hack to avoid leaking dirfd on 'dir *.*'

1 files changed, 8 insertions, 0 deletions

diff --git a/sftsr.c b/sftsr.c
index ffbf326..fb41431 100644
--- a/sftsr.c
+++ b/sftsr.c
@@ -1172,6 +1172,14 @@ static void handle_find_first(union INTPACK __far *r)
 		dlog_puts("search volid OK");
 		clear_dos_err(r);
 		return;
+	} else if (search_attr == 0) {
+		// Another hack to avoid leaking directory handles.
+		// While technically a mask of 0 should return all files,
+		// DOS's dir uses a mask of 0 when it just wants to check
+		// if the directory exists, and will never call FindNext.
+		// So we'll not bother opening the directory and hope nothing breaks.
+		set_dos_err(r, DOS_ERROR_NO_MORE_FILES);
+		return;
 	}
 
 	// First, open the desired directory for searching