dostools flag

flag.c

@@ -176,6 +176,19 @@ static int flag_ncp87_modify_attrs(char *name, uint32 attrs)
   if (flag_current_dhandle(&dhandle))
     return(-1);
 
+  /*
+   * Prefer verified Client32 modify path.  The old INT 21h/F257 modify path
+   * can hang under DOS Client32 for high FLAG bits such as T/P/DI/RI.
+   */
+  {
+    uint16 actual = 0;
+    uint16 hlo = 0;
+    uint16 hhi = 0;
+    if (!c32_ncp87_modify_dos_attributes(name, (uint16)dhandle, attrs,
+                                         &actual, &hlo, &hhi))
+      return(0);
+  }
+
   memset(&req, 0, sizeof(req));
   memset(&repl, 0, sizeof(repl));