1 // Copyright 2014 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef LIBRARIES_NACL_IO_JSFS_JS_FS_H_ 6 #define LIBRARIES_NACL_IO_JSFS_JS_FS_H_ 7 8 #include <pthread.h> 9 #include <stdarg.h> 10 11 #include <map> 12 13 #include <ppapi/c/pp_var.h> 14 15 #include "nacl_io/filesystem.h" 16 #include "nacl_io/node.h" 17 18 namespace nacl_io { 19 20 class MessagingInterface; 21 class VarArrayBufferInterface; 22 class VarArrayInterface; 23 class VarDictionaryInterface; 24 class VarInterface; 25 class ScopedVar; 26 27 class JsFs : public Filesystem { 28 public: 29 typedef uint32_t RequestId; 30 31 protected: 32 JsFs(); 33 34 virtual Error Init(const FsInitArgs& args); 35 virtual void Destroy(); 36 37 public: 38 virtual Error Access(const Path& path, int a_mode); 39 virtual Error Open(const Path& path, int mode, ScopedNode* out_node); 40 virtual Error Unlink(const Path& path); 41 virtual Error Mkdir(const Path& path, int perm); 42 virtual Error Rmdir(const Path& path); 43 virtual Error Remove(const Path& path); 44 virtual Error Rename(const Path& path, const Path& newpath); 45 virtual Error Filesystem_VIoctl(int request, va_list args); 46 47 private: 48 bool SetDictVar(PP_Var dict, const char* key, PP_Var value); 49 PP_Var GetDictVar(PP_Var dict, const char* key); 50 bool GetVarInt32(PP_Var var, int32_t* out_value); 51 bool GetVarUint32(PP_Var var, uint32_t* out_value); 52 bool GetVarInt64(PP_Var var, int64_t* out_value); 53 54 PP_Var VMakeRequest(RequestId request_id, const char* format, va_list args); 55 uint32_t VSendRequest(const char* format, va_list args); 56 bool VSendRequestAndWait(ScopedVar* out_response, 57 const char* format, 58 va_list args); 59 PP_Var WaitForResponse(uint32_t request_id); 60 bool SendRequestAndWait(ScopedVar* out_response, const char* format, ...); 61 Error ErrorFromResponse(const ScopedVar& response); 62 63 int ScanVar(PP_Var var, const char* format, ...); 64 int VScanVar(PP_Var var, const char* format, va_list args); 65 66 private: 67 MessagingInterface* messaging_iface_; 68 VarArrayInterface* array_iface_; 69 VarArrayBufferInterface* buffer_iface_; 70 VarDictionaryInterface* dict_iface_; 71 VarInterface* var_iface_; 72 73 typedef std::map<RequestId, PP_Var> ResponseMap_t; 74 sdk_util::SimpleLock lock_; 75 RequestId request_id_; // Protected by lock_; 76 pthread_cond_t response_cond_; // protected by lock_. 77 ResponseMap_t responses_; // protected by lock_. 78 79 friend class JsFsNode; 80 DISALLOW_COPY_AND_ASSIGN(JsFs); 81 }; 82 83 } // namespace nacl_io 84 85 #endif // LIBRARIES_NACL_IO_JSFS_JS_FS_H_ 86
