CMFileManager: Fix mv operation on Cross-device link failure

Issue https://github.com/jruesga/CMFileManager/issues/31.

The busybox mv command returns a failure when files are moved between filesystem (Cross-device
link failure). This changes fix this failure by:

 * Replace mv command for a "mv or cp+rm" operation.
 * rm operation occurs over source mount point so this need to be mounted prior to execute this
   new command.
 * Fix the stderr buffer filling on error.

Change-Id: If113ad810e7daffeb8379589789b2855eda14908

1 files changed, 9 insertions, 1 deletions

diff --git a/src/com/cyanogenmod/filemanager/commands/java/CreateFileCommand.java b/src/com/cyanogenmod/filemanager/commands/java/CreateFileCommand.java
index fa9b5bf..ab9901f 100644
--- a/src/com/cyanogenmod/filemanager/commands/java/CreateFileCommand.java
+++ b/src/com/cyanogenmod/filemanager/commands/java/CreateFileCommand.java
@@ -105,7 +105,15 @@ public class CreateFileCommand extends Program implements CreateFileExecutable {
      * {@inheritDoc}
      */
     @Override
-    public MountPoint getWritableMountPoint() {
+    public MountPoint getSrcWritableMountPoint() {
+        return null;
+    }
+
+    /**
+     * {@inheritDoc}
+     */
+    @Override
+    public MountPoint getDstWritableMountPoint() {
         return MountPointHelper.getMountPointFromDirectory(this.mPath);
     }
 }