12211d163e
Bug: 78793464 Test: adb reboot fastboot && fastboot flashall Change-Id: Ibe802c36f6efe20111a2315616ef34d3a027950f
67 lines
1.9 KiB
C++
67 lines
1.9 KiB
C++
/*
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* Copyright (C) 2018 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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#include "utility.h"
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#include <android-base/logging.h>
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#include "fastboot_device.h"
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using android::base::unique_fd;
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using android::hardware::boot::V1_0::Slot;
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static bool OpenPhysicalPartition(const std::string& name, PartitionHandle* handle) {
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std::optional<std::string> path = FindPhysicalPartition(name);
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if (!path) {
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return false;
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}
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*handle = PartitionHandle(*path);
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return true;
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}
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bool OpenPartition(FastbootDevice* /* device */, const std::string& name, PartitionHandle* handle) {
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if (!OpenPhysicalPartition(name, handle)) {
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LOG(ERROR) << "No such partition: " << name;
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return false;
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}
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unique_fd fd(TEMP_FAILURE_RETRY(open(handle->path().c_str(), O_WRONLY | O_EXCL)));
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if (fd < 0) {
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PLOG(ERROR) << "Failed to open block device: " << handle->path();
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return false;
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}
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handle->set_fd(std::move(fd));
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return true;
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}
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std::optional<std::string> FindPhysicalPartition(const std::string& name) {
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std::string path = "/dev/block/by-name/" + name;
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if (access(path.c_str(), R_OK | W_OK) < 0) {
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return {};
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}
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return path;
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}
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bool GetSlotNumber(const std::string& slot, Slot* number) {
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if (slot.size() != 1) {
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return false;
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}
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if (slot[0] < 'a' || slot[0] > 'z') {
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return false;
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}
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*number = slot[0] - 'a';
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return true;
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}
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