293   Status NewSequentialFile(const std::string& f,  in NewSequentialFile()  argument
300         file_system_->NewSequentialFile(f, FileOptions(options), &file, &dbg);  in NewSequentialFile()
306   Status NewRandomAccessFile(const std::string& f,  in NewRandomAccessFile()  argument
313         file_system_->NewRandomAccessFile(f, FileOptions(options), &file, &dbg);  in NewRandomAccessFile()
319   Status NewWritableFile(const std::string& f, std::unique_ptr<WritableFile>* r,  in NewWritableFile()  argument
325         file_system_->NewWritableFile(f, FileOptions(options), &file, &dbg);  in NewWritableFile()
388   Status FileExists(const std::string& f) override {  in FileExists()  argument
391     return file_system_->FileExists(f, io_opts, &dbg);  in FileExists()
405   Status DeleteFile(const std::string& f) override {  in DeleteFile()  argument
408     return file_system_->DeleteFile(f, io_opts, &dbg);  in DeleteFile()
430   Status GetFileSize(const std::string& f, uint64_t* s) override {  in GetFileSize()  argument
433     return file_system_->GetFileSize(f, io_opts, s, &dbg);  in GetFileSize()
469   Status LockFile(const std::string& f, FileLock** l) override {  in LockFile()  argument
472     return file_system_->LockFile(f, io_opts, l, &dbg);  in LockFile()
503   void Schedule(void (*f)(void* arg), void* a, Priority pri,
505     return env_target_->Schedule(f, a, pri, tag, u);
512   void StartThread(void (*f)(void*), void* a) override {  in StartThread()
513     return env_target_->StartThread(f, a);  in StartThread()
867   IOStatus NewSequentialFile(const std::string& f,  in NewSequentialFile()  argument
872     Status s = target_->NewSequentialFile(f, &file, file_opts);  in NewSequentialFile()
878   IOStatus NewRandomAccessFile(const std::string& f,  in NewRandomAccessFile()  argument
883     Status s = target_->NewRandomAccessFile(f, &file, file_opts);  in NewRandomAccessFile()
889   IOStatus NewWritableFile(const std::string& f, const FileOptions& file_opts,  in NewWritableFile()  argument
893     Status s = target_->NewWritableFile(f, &file, file_opts);  in NewWritableFile()
949   IOStatus FileExists(const std::string& f, const IOOptions& /*io_opts*/,  in FileExists()  argument
951     return status_to_io_status(target_->FileExists(f));  in FileExists()
964   IOStatus DeleteFile(const std::string& f, const IOOptions& /*options*/,  in DeleteFile()  argument
966     return status_to_io_status(target_->DeleteFile(f));  in DeleteFile()
986   IOStatus GetFileSize(const std::string& f, const IOOptions& /*options*/,  in GetFileSize()  argument
988     return status_to_io_status(target_->GetFileSize(f, s));  in GetFileSize()
1029   IOStatus LockFile(const std::string& f, const IOOptions& /*options*/,  in LockFile()  argument
1031     return status_to_io_status(target_->LockFile(f, l));  in LockFile()