The Tor Browser: toolkit/mozapps/update/updater/automounter

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

     2 /* vim:set ts=2 sw=2 sts=2 et cindent: */

     3 /* This Source Code Form is subject to the terms of the Mozilla Public

     4  * License, v. 2.0. If a copy of the MPL was not distributed with this

     5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     7 #ifndef AUTOMOUNTER_GONK_H__

     8 #define AUTOMOUNTER_GONK_H__

    10 typedef enum {

    11   ReadOnly,

    12   ReadWrite,

    13   Unknown

    14 } MountAccess;

    16 /**

    17  * This class will remount the /system partition as read-write in Gonk to allow

    18  * the updater write access. Upon destruction, /system will be remounted back to

    19  * read-only. If something causes /system to remain read-write, this class will

    20  * reboot the device and allow the system to mount as read-only.

    21  *

    22  * Code inspired from AOSP system/core/adb/remount_service.c

    23  */

    24 class GonkAutoMounter

    25 {

    26 public:

    27   GonkAutoMounter();

    28   ~GonkAutoMounter();

    30   const MountAccess GetAccess()

    31   {

    32     return mAccess;

    33   }

    35 private:

    36   bool RemountSystem(MountAccess access);

    37   bool ForceRemountReadOnly();

    38   bool UpdateMountStatus();

    39   bool ProcessMount(const char *mount);

    40   bool MountSystem(unsigned long flags);

    41   void Reboot();

    43 private:

    44   char *mDevice;

    45   MountAccess mAccess;

    46 };

    48 #endif // AUTOMOUNTER_GONK_H__

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