79 lines
2.9 KiB
C++
79 lines
2.9 KiB
C++
// Copyright (C) 2021 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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#pragma once
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#include <dirent.h>
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#include <fcntl.h>
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#include <sys/param.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include <cstdint>
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#include <string>
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namespace dittosuite {
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class SyscallInterface {
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public:
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virtual ~SyscallInterface() {}
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virtual int Access(const std::string& path_name, int mode) = 0;
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virtual int Close(int fd) = 0;
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virtual int CloseDir(DIR* dirp) = 0;
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virtual int FAdvise(int fd, int64_t offset, int64_t len, int advice) = 0;
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virtual int FAllocate(int fd, int mode, int64_t offset, int64_t len) = 0;
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virtual int FTruncate(int fd, int64_t length) = 0;
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virtual int FStat(int filedes, struct stat64* buf) = 0;
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virtual int FSync(int fd) = 0;
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virtual int Open(const std::string& path_name, int flags, int mode) = 0;
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virtual DIR* OpenDir(const std::string& name) = 0;
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virtual int64_t Read(int fd, char* buf, int64_t count, int64_t offset) = 0;
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virtual struct dirent* ReadDir(DIR* dirp) = 0;
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virtual int64_t ReadLink(const std::string& path_name, char* buf, int64_t bufsiz) = 0;
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virtual void Sync() = 0;
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virtual int Unlink(const std::string& path_name) = 0;
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virtual int64_t Write(int fd, char* buf, int64_t count, int64_t offset) = 0;
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};
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class Syscall : public SyscallInterface {
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public:
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Syscall(Syscall& other) = delete;
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void operator=(const Syscall&) = delete;
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static Syscall& GetSyscall();
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int Access(const std::string& path_name, int mode) override;
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int Close(int fd) override;
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int CloseDir(DIR* dirp) override;
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int FAdvise(int fd, int64_t offset, int64_t len, int advice) override;
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int FAllocate(int fd, int mode, int64_t offset, int64_t len) override;
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int FTruncate(int fd, int64_t length) override;
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int FStat(int filedes, struct stat64* buf) override;
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int FSync(int fd) override;
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int Open(const std::string& path_name, int flags, int mode) override;
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DIR* OpenDir(const std::string& name) override;
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int64_t Read(int fd, char* buf, int64_t count, int64_t offset) override;
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struct dirent* ReadDir(DIR* dirp) override;
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int64_t ReadLink(const std::string& path_name, char* buf, int64_t bufsiz) override;
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void Sync() override;
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int Unlink(const std::string& path_name) override;
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int64_t Write(int fd, char* buf, int64_t count, int64_t offset) override;
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private:
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Syscall(){};
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};
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} // namespace dittosuite
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