Change access mode of disk devices when mounting based on config.

chromeos/disks/disk_mount_manager.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROMEOS_DISKS_DISK_MOUNT_MANAGER_H_
 #define CHROMEOS_DISKS_DISK_MOUNT_MANAGER_H_
 
 #include <stdint.h>
 
 #include <map>
@@ skipping 236 matching lines @@
   // Gets the list of mount points.
   virtual const MountPointMap& mount_points() const = 0;
 
   // Refreshes all the information about mounting if it is not yet done and
   // invokes |callback| when finished. If the information is already refreshed
   // and |force| is false, it just runs |callback| immediately.
   virtual void EnsureMountInfoRefreshed(
       const EnsureMountInfoRefreshedCallback& callback,
       bool force) = 0;
 
-  // Mounts a device.
+  // Mounts a device or an archive file.
+  // |source_path| specifies either a device or an archive file path.
+  // When |type|=MOUNT_TYPE_ARCHIVE, caller may set two optional arguments:
+  // |source_format| and |mount_label|. See CrosDisksClient::Mount for detail.
+  // access_mode specifies read-only or read-write mount mode for a device.

[fukino, 2016/08/04 02:22:38]

access_mode => |access_mode|

[yamaguchi, 2016/08/04 02:32:57]

Done.

   // Note that the mount operation may fail. To find out the result, one should
   // observe DiskMountManager for |Observer::OnMountEvent| event, which will be
   // raised upon the mount operation completion.
   virtual void MountPath(const std::string& source_path,
                          const std::string& source_format,
                          const std::string& mount_label,
-                         MountType type) = 0;
+                         MountType type,
+                         MountAccessMode access_mode) = 0;
 
   // Unmounts a mounted disk.
   // |UnmountOptions| enum defined in chromeos/dbus/cros_disks_client.h.
   // When the method is complete, |callback| will be called and observers'
   // |OnMountEvent| will be raised.
   //
   // |callback| may be empty, in which case it gets ignored.
   virtual void UnmountPath(const std::string& mount_path,
                            UnmountOptions options,
                            const UnmountPathCallback& callback) = 0;
@@ skipping 32 matching lines @@
 
   // Returns a pointer to the global DiskMountManager instance.
   // Initialize() should already have been called.
   static DiskMountManager* GetInstance();
 };
 
 }  // namespace disks
 }  // namespace chromeos
 
 #endif  // CHROMEOS_DISKS_DISK_MOUNT_MANAGER_H_