153 lines
6.3 KiB
C++
153 lines
6.3 KiB
C++
//
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// Copyright (C) 2016 The Android Open Source Project
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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#ifndef UPDATE_ENGINE_COMMON_SERVICE_H_
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#define UPDATE_ENGINE_COMMON_SERVICE_H_
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#include <inttypes.h>
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#include <string>
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#include <base/memory/ref_counted.h>
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#include <brillo/errors/error.h>
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#include "update_engine/system_state.h"
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namespace chromeos_update_engine {
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class UpdateEngineService {
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public:
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// Flags used in the AttemptUpdateWithFlags() D-Bus method.
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typedef enum {
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kAttemptUpdateFlagNonInteractive = (1<<0)
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} AttemptUpdateFlags;
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// Error domain for all the service errors.
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static const char* const kErrorDomain;
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// Generic service error.
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static const char* const kErrorFailed;
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explicit UpdateEngineService(SystemState* system_state);
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virtual ~UpdateEngineService() = default;
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bool AttemptUpdate(brillo::ErrorPtr* error,
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const std::string& in_app_version,
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const std::string& in_omaha_url,
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int32_t in_flags_as_int);
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bool AttemptRollback(brillo::ErrorPtr* error, bool in_powerwash);
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// Checks if the system rollback is available by verifying if the secondary
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// system partition is valid and bootable.
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bool CanRollback(brillo::ErrorPtr* error, bool* out_can_rollback);
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// Resets the status of the update_engine to idle, ignoring any applied
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// update. This is used for development only.
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bool ResetStatus(brillo::ErrorPtr* error);
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// Returns the current status of the Update Engine. If an update is in
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// progress, the number of operations, size to download and overall progress
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// is reported.
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bool GetStatus(brillo::ErrorPtr* error,
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int64_t* out_last_checked_time,
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double* out_progress,
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std::string* out_current_operation,
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std::string* out_new_version,
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int64_t* out_new_size);
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// Reboots the device if an update is applied and a reboot is required.
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bool RebootIfNeeded(brillo::ErrorPtr* error);
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// Changes the current channel of the device to the target channel. If the
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// target channel is a less stable channel than the current channel, then the
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// channel change happens immediately (at the next update check). If the
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// target channel is a more stable channel, then if is_powerwash_allowed is
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// set to true, then also the change happens immediately but with a powerwash
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// if required. Otherwise, the change takes effect eventually (when the
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// version on the target channel goes above the version number of what the
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// device currently has).
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bool SetChannel(brillo::ErrorPtr* error,
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const std::string& in_target_channel,
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bool in_is_powerwash_allowed);
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// If get_current_channel is set to true, populates |channel| with the name of
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// the channel that the device is currently on. Otherwise, it populates it
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// with the name of the channel the device is supposed to be (in case of a
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// pending channel change).
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bool GetChannel(brillo::ErrorPtr* error,
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bool in_get_current_channel,
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std::string* out_channel);
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// Sets the current "cohort hint" value to |in_cohort_hint|. The cohort hint
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// is sent back to Omaha on every request and can be used as a hint of what
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// cohort should we be put on.
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bool SetCohortHint(brillo::ErrorPtr* error, std::string in_cohort_hint);
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// Return the current cohort hint. This value can be set with SetCohortHint()
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// and can also be updated from Omaha on every update check request.
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bool GetCohortHint(brillo::ErrorPtr* error, std::string* out_cohort_hint);
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// Enables or disables the sharing and consuming updates over P2P feature
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// according to the |enabled| argument passed.
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bool SetP2PUpdatePermission(brillo::ErrorPtr* error, bool in_enabled);
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// Returns the current value for the P2P enabled setting. This involves both
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// sharing and consuming updates over P2P.
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bool GetP2PUpdatePermission(brillo::ErrorPtr* error, bool* out_enabled);
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// If there's no device policy installed, sets the update over cellular
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// networks permission to the |allowed| value. Otherwise, this method returns
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// with an error since this setting is overridden by the applied policy.
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bool SetUpdateOverCellularPermission(brillo::ErrorPtr* error,
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bool in_allowed);
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// Returns the current value of the update over cellular network setting,
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// either forced by the device policy if the device is enrolled or the current
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// user preference otherwise.
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bool GetUpdateOverCellularPermission(brillo::ErrorPtr* error,
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bool* out_allowed);
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// Returns the duration since the last successful update, as the
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// duration on the wallclock. Returns an error if the device has not
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// updated.
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bool GetDurationSinceUpdate(brillo::ErrorPtr* error,
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int64_t* out_usec_wallclock);
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// Returns the version string of OS that was used before the last reboot
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// into an updated version. This is available only when rebooting into an
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// update from previous version, otherwise an empty string is returned.
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bool GetPrevVersion(brillo::ErrorPtr* error, std::string* out_prev_version);
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// Returns the name of kernel partition that can be rolled back into.
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bool GetRollbackPartition(brillo::ErrorPtr* error,
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std::string* out_rollback_partition_name);
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// Returns the last UpdateAttempt error.
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bool GetLastAttemptError(brillo::ErrorPtr* error,
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int32_t* out_last_attempt_error);
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// Returns the current end-of-life status of the device. This value is updated
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// on every update check and persisted on disk across reboots.
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bool GetEolStatus(brillo::ErrorPtr* error, int32_t* out_eol_status);
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private:
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SystemState* system_state_;
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};
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} // namespace chromeos_update_engine
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#endif // UPDATE_ENGINE_COMMON_SERVICE_H_
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