Socket subsystem implementation

libraries/nacl-mounts/net/BaseSocketSubSystem.h

Index: libraries/nacl-mounts/net/BaseSocketSubSystem.h
===================================================================
--- libraries/nacl-mounts/net/BaseSocketSubSystem.h	(revision 0)
+++ libraries/nacl-mounts/net/BaseSocketSubSystem.h	(revision 0)
@@ -0,0 +1,60 @@
+// 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(int fd) = 0;
+  virtual int read(FileHandle* handle, char* buf, size_t count,
+    size_t* nread) = 0;
+  virtual int write(FileHandle* handle, const char* buf, size_t count,
+    size_t* nwrote) = 0;
+  virtual int seek(FileHandle* handle, nacl_abi_off_t offset, int whence,
+           nacl_abi_off_t* new_offset) = 0;
+  //virtual int dup(int fd, int *newfd) = 0;
+  //virtual int dup2(int fd, int newfd) = 0;
+  virtual int fstat(FileHandle* handle, nacl_abi_stat* out) = 0;
+
+  virtual int fcntl(FileHandle* handle, int cmd, va_list ap) = 0;
+  virtual int ioctl(FileHandle* handle, int request, va_list ap) = 0;
+
+  virtual unsigned long gethostbyname(const char* name) = 0;
+  virtual int socket(int socket_family, int socket_type, int protocol) = 0;
+  virtual int connect(FileHandle* handle, unsigned long addr,
+    unsigned short port) = 0;
+  virtual int shutdown(int sockfd, int how) = 0;
+  virtual int bind(FileHandle* handle, unsigned long addr,
+    unsigned short port) = 0;
+  virtual int listen(FileHandle* handle, int backlog) = 0;
+  virtual int accept(FileHandle* handle, struct sockaddr *addr,
+    socklen_t *addrlen) = 0;
+  virtual int  IsReady(int nfds, fd_set* fds, bool (FileStream::*is_ready)(),
+    bool apply) = 0;
+  virtual Mutex& mutex() = 0;
+  virtual Cond& cond() = 0;
+};
+
+#endif  // BASE_S3_H
+