190 std::size_t OpenFile::Read(FileOffset at, char *buffer, std::size_t minBytes,  in Read()  argument
196   if (!Seek(at, handler)) {  in Read()
219 std::size_t OpenFile::Write(FileOffset at, const char *buffer,  in Write()  argument
225   if (!Seek(at, handler)) {  in Write()
248 inline static int openfile_ftruncate(int fd, OpenFile::FileOffset at) {  in openfile_ftruncate()  argument
250   return ::_chsize(fd, at);  in openfile_ftruncate()
252   return ::ftruncate(fd, at);  in openfile_ftruncate()
256 void OpenFile::Truncate(FileOffset at, IoErrorHandler &handler) {  in Truncate()  argument
258   if (!knownSize_ || *knownSize_ != at) {  in Truncate()
259     if (openfile_ftruncate(fd_, at) != 0) {  in Truncate()
262     knownSize_ = at;  in Truncate()
270     FileOffset at, char *buffer, std::size_t bytes, IoErrorHandler &handler) {  in ReadAsynchronously()  argument
275     auto chunk{::pread(fd_, buffer + got, bytes - got, at)};  in ReadAsynchronously()
277     auto chunk{Seek(at, handler) ? ::read(fd_, buffer + got, bytes - got) : -1};  in ReadAsynchronously()
290       at += chunk;  in ReadAsynchronously()
298 int OpenFile::WriteAsynchronously(FileOffset at, const char *buffer,  in WriteAsynchronously()  argument
304     auto chunk{::pwrite(fd_, buffer + put, bytes - put, at)};  in WriteAsynchronously()
307         Seek(at, handler) ? ::write(fd_, buffer + put, bytes - put) : -1};  in WriteAsynchronously()
310       at += chunk;  in WriteAsynchronously()
373 bool OpenFile::Seek(FileOffset at, IoErrorHandler &handler) {  in Seek()  argument
374   if (at == position_) {  in Seek()
376   } else if (RawSeek(at)) {  in Seek()
377     SetPosition(at);  in Seek()
385 bool OpenFile::RawSeek(FileOffset at) {  in RawSeek()  argument
387   return ::lseek64(fd_, at, SEEK_SET) == at;  in RawSeek()
389   return ::lseek(fd_, at, SEEK_SET) == at;  in RawSeek()
395   std::int64_t at{::lseek64(fd_, 0, SEEK_END)};  in RawSeekToEnd()  local
397   std::int64_t at{::lseek(fd_, 0, SEEK_END)};  in RawSeekToEnd()
399   if (at >= 0) {  in RawSeekToEnd()
400     knownSize_ = at;  in RawSeekToEnd()