libc/src/__support/File/linux/file.h

   1 //===--- Linux specialization of the File data structure ------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "src/__support/File/file.h"
  10
  11 namespace LIBC_NAMESPACE {
  12
  13 FileIOResult linux_file_write(File *, const void *, size_t);
  14 FileIOResult linux_file_read(File *, void *, size_t);
  15 ErrorOr<long> linux_file_seek(File *, long, int);
  16 int linux_file_close(File *);
  17
  18 class LinuxFile : public File {
  19   int fd;
  20
  21 public:
  22   constexpr LinuxFile(int file_descriptor, uint8_t *buffer, size_t buffer_size,
  23                       int buffer_mode, bool owned, File::ModeFlags modeflags)
  24       : File(&linux_file_write, &linux_file_read, &linux_file_seek,
  25              &linux_file_close, buffer, buffer_size, buffer_mode, owned,
  26              modeflags),
  27         fd(file_descriptor) {}
  28
  29   int get_fd() const { return fd; }
  30 };
  31
  32 } // namespace LIBC_NAMESPACE