1 //
2 // Copyright (C) 2017 The Android Open Source Project
3 //
4 // Licensed under the Apache License, Version 2.0 (the "License");
5 // you may not use this file except in compliance with the License.
6 // You may obtain a copy of the License at
7 //
8 // http://www.apache.org/licenses/LICENSE-2.0
9 //
10 // Unless required by applicable law or agreed to in writing, software
11 // distributed under the License is distributed on an "AS IS" BASIS,
12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 // See the License for the specific language governing permissions and
14 // limitations under the License.
15 //
16
17 #include "update_engine/update_manager/enough_slots_ab_updates_policy_impl.h"
18
19 namespace chromeos_update_manager {
20
21 // Do not perform any updates if booted from removable device. This decision
22 // is final.
UpdateCheckAllowed(EvaluationContext * ec,State * state,std::string * error,UpdateCheckParams * result) const23 EvalStatus EnoughSlotsAbUpdatesPolicyImpl::UpdateCheckAllowed(
24 EvaluationContext* ec,
25 State* state,
26 std::string* error,
27 UpdateCheckParams* result) const {
28 const auto* num_slots_p =
29 ec->GetValue(state->system_provider()->var_num_slots());
30 if (num_slots_p == nullptr || *num_slots_p < 2) {
31 LOG(INFO) << "Not enough slots for A/B updates, disabling update checks.";
32 result->updates_enabled = false;
33 return EvalStatus::kSucceeded;
34 }
35 return EvalStatus::kContinue;
36 }
37
38 } // namespace chromeos_update_manager
39