michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* vim:set ts=2 sw=2 sts=2 et cindent: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: #ifndef AUTOMOUNTER_GONK_H__
michael@0: #define AUTOMOUNTER_GONK_H__
michael@0: 
michael@0: typedef enum {
michael@0:   ReadOnly,
michael@0:   ReadWrite,
michael@0:   Unknown
michael@0: } MountAccess;
michael@0: 
michael@0: /**
michael@0:  * This class will remount the /system partition as read-write in Gonk to allow
michael@0:  * the updater write access. Upon destruction, /system will be remounted back to
michael@0:  * read-only. If something causes /system to remain read-write, this class will
michael@0:  * reboot the device and allow the system to mount as read-only.
michael@0:  *
michael@0:  * Code inspired from AOSP system/core/adb/remount_service.c
michael@0:  */
michael@0: class GonkAutoMounter
michael@0: {
michael@0: public:
michael@0:   GonkAutoMounter();
michael@0:   ~GonkAutoMounter();
michael@0: 
michael@0:   const MountAccess GetAccess()
michael@0:   {
michael@0:     return mAccess;
michael@0:   }
michael@0: 
michael@0: private:
michael@0:   bool RemountSystem(MountAccess access);
michael@0:   bool ForceRemountReadOnly();
michael@0:   bool UpdateMountStatus();
michael@0:   bool ProcessMount(const char *mount);
michael@0:   bool MountSystem(unsigned long flags);
michael@0:   void Reboot();
michael@0: 
michael@0: private:
michael@0:   char *mDevice;
michael@0:   MountAccess mAccess;
michael@0: };
michael@0: 
michael@0: #endif // AUTOMOUNTER_GONK_H__