From 6a8355b1097afbdca4e7c2e0a6622815495cfdbb Mon Sep 17 00:00:00 2001
From: Thomas Vander Stichele <thomas (at) apestaart (dot) org>
Date: Tue, 22 Mar 2011 17:31:36 +0000
Subject: [PATCH] 	* morituri/common/program.py: 	*
 morituri/rip/offset.py: 	  When finding the offset, also load and
 possibly unmount, resolving 	  to the real path for the device.

---
 ChangeLog                  |  7 +++++++
 morituri/common/program.py |  4 ++++
 morituri/rip/offset.py     | 13 +++++++++++--
 3 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 46c797b..733f1da 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2011-03-22  Thomas Vander Stichele  <thomas at apestaart dot org>
+
+	* morituri/common/program.py:
+	* morituri/rip/offset.py:
+	  When finding the offset, also load and possibly unmount, resolving
+	  to the real path for the device.
+
 2011-03-20  Thomas Vander Stichele  <thomas at apestaart dot org>
 
 	* morituri/common/encode.py:
diff --git a/morituri/common/program.py b/morituri/common/program.py
index eaebfff..9ea1b48 100644
--- a/morituri/common/program.py
+++ b/morituri/common/program.py
@@ -189,7 +189,11 @@ class Program(log.Loggable):
         """
         Unmount the given device if it is mounted, as happens with automounted
         data tracks.
+
+        If the given device is a symlink, the target will be checked.
         """
+        device = os.path.realpath(device)
+        self.debug('possibly unmount real path %r' % device)
         proc = open('/proc/mounts').read()
         if device in proc:
             print 'Device %s is mounted, unmounting' % device
diff --git a/morituri/rip/offset.py b/morituri/rip/offset.py
index 81266a9..36f71d5 100644
--- a/morituri/rip/offset.py
+++ b/morituri/rip/offset.py
@@ -26,7 +26,7 @@ import tempfile
 import gobject
 gobject.threads_init()
 
-from morituri.common import logcommand, task, accurip, drive
+from morituri.common import logcommand, task, accurip, drive, program
 from morituri.image import image
 from morituri.program import cdrdao, cdparanoia
 
@@ -86,10 +86,19 @@ CD in the AccurateRip database."""
 
 
     def do(self, args):
+        prog = program.Program()
         runner = task.SyncRunner()
 
+        device = self.options.device
+
+        # if necessary, load and unmount
+        print 'Checking device', device
+
+        prog.loadDevice(device)
+        prog.unmountDevice(device)
+
         # first get the Table Of Contents of the CD
-        t = cdrdao.ReadTOCTask(device=self.options.device)
+        t = cdrdao.ReadTOCTask(device=device)
 
         try:
             runner.run(t)