10c6374e81
The external firmware handler always has root group privileges because it is forked/executed without setgid() by ueventd which has root privileges. This patch calls setgid() with group ID specified in ueventd.rc before execv(). Test: atest CtsInitTestCases Signed-off-by: Suchang Woo <suchang.woo@samsung.com> Change-Id: Id1430e783b0e409d55ac80fe213e81ba099729e2
68 lines
2.2 KiB
C++
68 lines
2.2 KiB
C++
/*
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* Copyright (C) 2007 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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#pragma once
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#include <grp.h>
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#include <pwd.h>
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#include <functional>
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#include <string>
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#include <vector>
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#include "result.h"
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#include "uevent.h"
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#include "uevent_handler.h"
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namespace android {
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namespace init {
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struct ExternalFirmwareHandler {
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ExternalFirmwareHandler(std::string devpath, uid_t uid, std::string handler_path);
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ExternalFirmwareHandler(std::string devpath, uid_t uid, gid_t gid, std::string handler_path);
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std::string devpath;
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uid_t uid;
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gid_t gid;
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std::string handler_path;
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std::function<bool(const std::string&)> match;
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};
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class FirmwareHandler : public UeventHandler {
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public:
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FirmwareHandler(std::vector<std::string> firmware_directories,
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std::vector<ExternalFirmwareHandler> external_firmware_handlers);
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virtual ~FirmwareHandler() = default;
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void HandleUevent(const Uevent& uevent) override;
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private:
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friend void FirmwareTestWithExternalHandler(const std::string& test_name,
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bool expect_new_firmware);
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Result<std::string> RunExternalHandler(const std::string& handler, uid_t uid, gid_t gid,
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const Uevent& uevent) const;
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std::string GetFirmwarePath(const Uevent& uevent) const;
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void ProcessFirmwareEvent(const std::string& root, const std::string& firmware) const;
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bool ForEachFirmwareDirectory(std::function<bool(const std::string&)> handler) const;
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std::vector<std::string> firmware_directories_;
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std::vector<ExternalFirmwareHandler> external_firmware_handlers_;
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};
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} // namespace init
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} // namespace android
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