Socket subsystem implementation

libraries/nacl-mounts/net/BaseSocketSubSystem.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 BASE_S3_H
+#define BASE_S3_H
+
+#include <assert.h>
+#include <errno.h>
+#include <memory.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/ioctl.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <map>
+#include <string>
+
+#include "../base/PthreadHelpers.h"
+#include "../net/IOInterfaces.h"
+
+class BaseSocketSubSystem {
+ public:
+  BaseSocketSubSystem() {}
+  virtual ~BaseSocketSubSystem() {}
+
+  // Syscall implementations
+  virtual int close(FileStream* stream) = 0;
+  virtual int read(FileStream* stream, char* buf, size_t count,
+    size_t* nread) = 0;
+  virtual int write(FileStream* stream, const char* buf, size_t count,
+    size_t* nwrote) = 0;
+  virtual int seek(FileStream* stream, nacl_abi_off_t offset, int whence,
+           nacl_abi_off_t* new_offset) = 0;
+  virtual int fstat(FileStream* stream, nacl_abi_stat* out) = 0;
+
+  virtual int fcntl(FileStream* stream, int cmd, va_list ap) = 0;
+  virtual int ioctl(FileStream* stream, int request, va_list ap) = 0;
+
+  virtual unsigned long gethostbyname(const char* name) = 0;
+  virtual int connect(FileStream** stream, unsigned long addr,
+    unsigned short port) = 0;
+  virtual int shutdown(FileStream* stream, int how) = 0;
+  virtual int bind(FileStream** stream, unsigned long addr,
+    unsigned short port) = 0;
+  virtual int listen(FileStream* stream, int backlog) = 0;
+  virtual FileStream* accept(FileStream* stream, struct sockaddr *addr,
+    socklen_t* addrlen) = 0;
+};
+
+#endif  // BASE_S3_H
+