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 PACKAGES_LIBRARIES_NACL_MOUNTS_NET_BASESOCKETSUBSYSTEM_H_
+#define PACKAGES_LIBRARIES_NACL_MOUNTS_NET_BASESOCKETSUBSYSTEM_H_
+#include <assert.h>
+#include <errno.h>
+#ifdef __GLIBC__
+#include <memory.h>
+#else
+#include <nacl-mounts/net/newlib_compat.h>
+#endif
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#include <map>
+#include <string>
+
+#include <nacl-mounts/net/Socket.h>
+#include <nacl-mounts/util/PthreadHelpers.h>
+
+class BaseSocketSubSystem {
+ public:
+  BaseSocketSubSystem() {}
+  virtual ~BaseSocketSubSystem() {}
+
+  // Syscall implementations
+  virtual int close(Socket* stream) = 0;
+  virtual int read(Socket* stream, char* buf, size_t count,
+    size_t* nread) = 0;
+  virtual int write(Socket* stream, const char* buf, size_t count,
+    size_t* nwrote) = 0;
+  virtual int seek(Socket* stream, nacl_abi_off_t offset, int whence,
+           nacl_abi_off_t* new_offset) = 0;
+  virtual int fstat(Socket* stream, nacl_abi_stat* out) = 0;
+
+  virtual int fcntl(Socket* stream, int cmd, va_list ap) = 0;
+  virtual int ioctl(Socket* stream, int request, va_list ap) = 0;
+
+  virtual unsigned long gethostbyname(const char* name) = 0;
+  virtual int getaddrinfo(const char* hostname, const char* servname,
+    const addrinfo* hints, addrinfo** res) = 0;
+  virtual void freeaddrinfo(addrinfo* ai) = 0;
+  virtual int getnameinfo(const sockaddr *sa, socklen_t salen,
+                            char *host, size_t hostlen,
+                            char *serv, size_t servlen, int flags) = 0;
+  virtual int connect(Socket** stream, const sockaddr* serv_addr,
+    socklen_t addrlen) = 0;
+  virtual int bind(Socket** stream, const sockaddr* addr,
+    socklen_t addrlen) = 0;
+  virtual int shutdown(Socket* stream, int how) = 0;
+  virtual int listen(Socket* stream, int backlog) = 0;
+  virtual Socket* accept(Socket* stream, struct sockaddr *addr,
+    socklen_t* addrlen) = 0;
+};
+
+#endif  // PACKAGES_LIBRARIES_NACL_MOUNTS_NET_BASESOCKETSUBSYSTEM_H_
+