now makes the temporary editing file mode 0400 if in readonly

mode so that you can't easily change it.  also, will not read back in the
new version in read only mode.

SCCS-vsn: usr.bin/mail/edit.c 1.2

diff --git a/usr/src/usr.bin/mail/edit.c b/usr/src/usr.bin/mail/edit.c
index f08f7aa..c88b642 100644 (file)
--- a/usr/src/usr.bin/mail/edit.c
+++ b/usr/src/usr.bin/mail/edit.c
@@ -10,7 +10,7 @@
  * Perform message editing functions.
  */
 
  * Perform message editing functions.
  */
 

-static char *SccsId = "@(#)edit.c      1.1 %G%";
+static char *SccsId = "@(#)edit.c      1.2 %G%";

 
 /*
  * Edit a message list.
 
 /*
  * Edit a message list.


@@ -122,6 +122,14 @@ edit1(msgvec, ed)
                }
                fclose(obuf);
 
                }
                fclose(obuf);
 

+               /*
+                * If we are in read only mode, make the
+                * temporary message file readonly as well.
+                */
+
+               if (readonly)
+                       chmod(edname, 0400);
+

                /*
                 * Fork/execl the editor on the edit file.
                 */
                /*
                 * Fork/execl the editor on the edit file.
                 */


@@ -147,6 +155,16 @@ edit1(msgvec, ed)
                while (wait(&mesg) != pid)
                        ;
 
                while (wait(&mesg) != pid)
                        ;
 

+               /*
+                * If in read only mode, just remove the editor
+                * temporary and return.
+                */
+
+               if (readonly) {
+                       remove(edname);
+                       continue;
+               }
+

                /*
                 * Now copy the message to the end of the
                 * temp file.
                /*
                 * Now copy the message to the end of the
                 * temp file.