diff -r 1ca40043b632 -r 8ccaa5608511 tools/libxl/libxl_device.c
--- a/tools/libxl/libxl_device.c	Tue Jul 27 13:53:12 2010 +0200
+++ b/tools/libxl/libxl_device.c	Tue Jul 27 13:55:04 2010 +0200
@@ -123,7 +123,7 @@
     }
 }
 
-int device_physdisk_major_minor(char *physpath, int *major, int *minor)
+int device_physdisk_major_minor(const char *physpath, int *major, int *minor)
 {
     struct stat buf;
     if (stat(physpath, &buf) < 0)
diff -r 1ca40043b632 -r 8ccaa5608511 tools/libxl/libxl_internal.h
--- a/tools/libxl/libxl_internal.h	Tue Jul 27 13:53:12 2010 +0200
+++ b/tools/libxl/libxl_internal.h	Tue Jul 27 13:55:04 2010 +0200
@@ -149,7 +149,7 @@
 char *device_disk_backend_type_of_phystype(libxl_disk_phystype phystype);
 char *device_disk_string_of_phystype(libxl_disk_phystype phystype);
 
-int device_physdisk_major_minor(char *physpath, int *major, int *minor);
+int device_physdisk_major_minor(const char *physpath, int *major, int *minor);
 int device_disk_dev_number(char *virtpath);
 
 int libxl_device_generic_add(struct libxl_ctx *ctx, libxl_device *device,