Guarantee that target file of copy operation is writable.

diff --git a/v7/src/microcode/pros2fs.c b/v7/src/microcode/pros2fs.c
index 5bad64c954bd35f040119714bcf7db5021320488..9fe68af8ea07335afb2790ae9b5653cb0a8e3b74 100644 (file)
--- a/v7/src/microcode/pros2fs.c
+++ b/v7/src/microcode/pros2fs.c
@@ -1,6 +1,6 @@
 /* -*-C-*-
 
-$Id: pros2fs.c,v 1.9 1995/10/28 00:57:02 cph Exp $
+$Id: pros2fs.c,v 1.10 1995/10/28 01:09:58 cph Exp $
 
 Copyright (c) 1994-95 Massachusetts Institute of Technology
 
@@ -424,6 +424,16 @@ DEFINE_PRIMITIVE ("OS2-DAYLIGHT-SAVINGS-TIME?", Prim_OS2_dst_p, 0, 0, 0)
 DEFINE_PRIMITIVE ("OS2-COPY-FILE", Prim_OS2_copy_file, 2, 2, 0)
 {
   PRIMITIVE_HEADER (2);
-  STD_API_CALL (dos_copy, (STRING_ARG (1)), (STRING_ARG (2)), DCPY_EXISTING)
+  {
+    const char * from = (STRING_ARG (1));
+    const char * to = (STRING_ARG (2));
+    FILESTATUS3 * info = (OS2_read_file_status (to));
+    if ((info != 0) && (((info -> attrFile) & FILE_READONLY) != 0))
+      {
+       (info -> attrFile) &=~ FILE_READONLY;
+       OS2_write_file_status (to, info);
+      }
+    STD_API_CALL (dos_copy, from, to, DCPY_EXISTING);
+  }
   PRIMITIVE_RETURN (UNSPECIFIC);
 }