2010-04-02 Chris Allegretta <chrisa@asty.org>

* files.c (do_writeout): Expand modification check to include both the
          original file's device ID and inode number as reasons to warn the
          user that the file has been modified.  Based on security article on nano
          by Dan Rosenberg.



git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@4490 35c25a1d-7b9e-4130-9fde-d3aeb78583b8

ChangeLog

@@ -1,3 +1,9 @@
+2010-04-02 Chris Allegretta <chrisa@asty.org>
+	* files.c (do_writeout): Expand modification check to include both the
+	  original file's device ID and inode number as reasons to warn the 
+          user that the file has been modified.  Based on security article on nano
+          by Dan Rosenberg.
+
 2010-03-21 Chris Allegretta <chrisa@asty.org>
 	* nano.c (page_stdin et al): Don't attempt to reset/reopen the terminal
 	  settings when reading stdin if it was aborted with SIGINT.  May fix Savannah

src/files.c

@@ -2126,7 +2126,8 @@ bool do_writeout(bool exiting)
 		}
 #ifndef NANO_TINY
 
-		if (name_exists && openfile->current_stat && openfile->current_stat->st_mtime < st.st_mtime) {
+		if (name_exists && openfile->current_stat && openfile->current_stat->st_mtime < st.st_mtime ||
+                    openfile->current_stat->st_dev != st.st_dev || openfile->current_stat->st_ino != st.st_ino) {
 		    i = do_yesno_prompt(FALSE,
 			_("File was modified since you opened it, continue saving ? "));
 		    if (i == 0 || i == -1)