sdk/lib/fdio/zxio.h

// Copyright 2021 The Fuchsia Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef LIB_FDIO_ZXIO_H_
#define LIB_FDIO_ZXIO_H_

#include <lib/zxio/inception.h>

#include "internal.h"

namespace fdio_internal {

struct zxio : public base {
  zx_status_t close() override;
  zx_status_t clone(zx_handle_t* out_handle) override;
  zx_status_t unwrap(zx_handle_t* out_handle) override;
  void wait_begin(uint32_t events, zx_handle_t* out_handle, zx_signals_t* out_signals) override;
  void wait_end(zx_signals_t signals, uint32_t* out_events) override;
  zx_status_t get_token(zx_handle_t* out) override;
  zx_status_t get_attr(zxio_node_attributes_t* out) override;
  zx_status_t set_attr(const zxio_node_attributes_t* attr) override;
  zx_status_t dirent_iterator_init(zxio_dirent_iterator_t* iterator, zxio_t* directory) override;
  zx_status_t dirent_iterator_next(zxio_dirent_iterator_t* iterator,
                                   zxio_dirent_t** out_entry) override;
  void dirent_iterator_destroy(zxio_dirent_iterator_t* iterator) override;
  zx_status_t unlink(const char* path, size_t len) override;
  zx_status_t truncate(off_t off) override;
  zx_status_t rename(const char* src, size_t srclen, zx_handle_t dst_token, const char* dst,
                     size_t dstlen) override;
  zx_status_t link(const char* src, size_t srclen, zx_handle_t dst_token, const char* dst,
                   size_t dstlen) override;
  zx_status_t get_flags(uint32_t* out_flags) override;
  zx_status_t set_flags(uint32_t flags) override;
  zx_status_t recvmsg(struct msghdr* msg, int flags, size_t* out_actual,
                      int16_t* out_code) override;
  zx_status_t sendmsg(const struct msghdr* msg, int flags, size_t* out_actual,
                      int16_t* out_code) override;

 protected:
  friend class AllocHelper<zxio>;

  zxio() = default;
  ~zxio() override = default;

  void wait_begin_inner(uint32_t events, zx_signals_t signals, zx_handle_t* out_handle,
                        zx_signals_t* out_signals);
  void wait_end_inner(zx_signals_t signals, uint32_t* out_events, zx_signals_t* out_signals);
  zx_status_t recvmsg_inner(struct msghdr* msg, int flags, size_t* out_actual);
  zx_status_t sendmsg_inner(const struct msghdr* msg, int flags, size_t* out_actual);
};

struct pipe : public zxio {
  Errno posix_ioctl(int request, va_list va) override;
  zx_status_t shutdown(int how, int16_t* out_code) override;

 protected:
  friend class AllocHelper<pipe>;

  pipe() = default;
  ~pipe() override = default;

  const zxio_pipe_t& zxio_pipe();

  static Errno posix_ioctl_inner(const zx::socket& socket, int request, va_list va);
  static zx_status_t shutdown_inner(const zx::socket& socket, int how);
};

}  // namespace fdio_internal

#endif  // LIB_FDIO_ZXIO_H_