>From f3e1018d306f607676e6695ea8864b77bbddcb58 Mon Sep 17 00:00:00 2001
From: Andreas Oberritter <address@hidden>
Date: Tue, 12 Oct 2010 00:42:59 +0200
Subject: [PATCH 4/4] linux: fail if drive does not respond to identify command

---
 rescuebook.cc |   20 ++++++++++++++++++++
 1 files changed, 20 insertions(+), 0 deletions(-)

diff --git a/rescuebook.cc b/rescuebook.cc
index b54fa40..0774f6f 100644
--- a/rescuebook.cc
+++ b/rescuebook.cc
@@ -29,6 +29,10 @@
 #include "block.h"
 #include "ddrescue.h"
 
+#if defined(__linux__)
+#include <sys/ioctl.h>
+#include <linux/hdreg.h>
+#endif
 
 // Return values: 0 OK, -1 interrupted, -2 logfile error.
 //
@@ -118,6 +122,22 @@ int Rescuebook::copy_and_update( const Block & b, const Sblock::Status st,
         final_msg( "input file disappeared" ); final_errno( errno );
         retval = 1;
         }
+#if defined(__linux__)
+      else
+        {
+        unsigned char args[4 + 512];
+        args[0] = 0xec; // COMMAND
+        args[1] = 0;    // SECTOR
+        args[2] = 0;    // FEATURE
+        args[3] = 1;    // NSECTOR
+        memset(&args[4], 0, 512);
+        if(ioctl(ides_, HDIO_DRIVE_CMD, args) < 0)
+          {
+          final_msg( "input drive does not identify" ); final_errno( errno );
+          retval = 1;
+          }
+        }
+#endif
       }
     }
   return retval;
-- 
1.7.0.4