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Diffstat (limited to 'cmds/installd/execv_helper.h')
-rw-r--r-- | cmds/installd/execv_helper.h | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/cmds/installd/execv_helper.h b/cmds/installd/execv_helper.h new file mode 100644 index 0000000000..9adfc0e812 --- /dev/null +++ b/cmds/installd/execv_helper.h @@ -0,0 +1,55 @@ +/* + * Copyright (C) 2020 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef ANDROID_INSTALLD_EXECV_HELPER_H +#define ANDROID_INSTALLD_EXECV_HELPER_H + +#include <string> +#include <vector> + +namespace android { +namespace installd { + +// ExecVHelper prepares and holds pointers to parsed command line arguments so that no allocations +// need to be performed between the fork and exec. +class ExecVHelper { + public: + ExecVHelper(); + virtual ~ExecVHelper(); + + [[ noreturn ]] + virtual void Exec(int exit_code); + + void PrepareArgs(const std::string& bin); + + // Add an arg if it's not empty. + void AddArg(const std::string& arg); + + // Add a runtime arg if it's not empty. + void AddRuntimeArg(const std::string& arg); + + protected: + // Holder arrays for backing arg storage. + std::vector<std::string> args_; + + // Argument poiners. + std::vector<const char*> argv_; +}; + +} // namespace installd +} // namespace android + +#endif // ANDROID_INSTALLD_EXECV_HELPER_H |