Socket subsystem implementation

libraries/nacl-mounts/net/Socket.h

+// Copyright (c) 2012 The Chromium OS 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 PACKAGES_LIBRARIES_NACL_MOUNTS_BASE_SOCKET_H
+#define PACKAGES_LIBRARIES_NACL_MOUNTS_BASE_SOCKET_H
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdarg.h>
+#include <string.h>
+#include <sys/dir.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include "../base/nacl_dirent.h"
+
+class Socket {
+ public:
+  virtual ~Socket() {}
+
+  virtual void addref() = 0;
+  virtual void release() = 0;
+
+  virtual void close() = 0;
+  virtual int read(char* buf, size_t count, size_t* nread) = 0;
+  virtual int write(const char* buf, size_t count, size_t* nwrote) = 0;
+  virtual int seek(nacl_abi_off_t offset, int whence,
+                   nacl_abi_off_t* new_offset) {
+    return ESPIPE;
+  }
+  virtual int fstat(nacl_abi_stat* out) {
+    memset(out, 0, sizeof(nacl_abi_stat));
+    return 0;
+  }
+  virtual int getdents(dirent* buf, size_t count, size_t* nread) {
+    return ENOTDIR;
+  }
+
+  virtual int isatty() {
+    errno = EINVAL;
+    return 0;
+  }
+
+  virtual int fcntl(int cmd,  va_list ap) {
+    errno = EINVAL;
+    return -1;
+  }
+
+  virtual int ioctl(int request,  va_list ap) {
+    errno = EINVAL;
+    return -1;
+  }
+
+  virtual bool is_read_ready() {
+    return true;
+  }
+  virtual bool is_write_ready() {
+    return true;
+  }
+  virtual bool is_exception() {
+    return false;
+  }
+};
+
+#endif  // PACKAGES_LIBRARIES_NACL_MOUNTS_BASE_SOCKET_H
+