94
95 static void throwWindowsException(JNIEnv* env, DWORD lastError) {
96 jobject x = JNU_NewObjectByName(env, "sun/nio/fs/WindowsException",
97 "(I)V", lastError);
98 if (x != NULL) {
99 (*env)->Throw(env, x);
100 }
101 }
102
103 /**
104 * Initializes jfieldIDs and get address of Win32 calls that are located
105 * at runtime.
106 */
107 JNIEXPORT void JNICALL
108 Java_sun_nio_fs_WindowsNativeDispatcher_initIDs(JNIEnv* env, jclass this)
109 {
110 jclass clazz;
111 HMODULE h;
112
113 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$FirstFile");
114 if (clazz == NULL) {
115 return;
116 }
117 findFirst_handle = (*env)->GetFieldID(env, clazz, "handle", "J");
118 findFirst_name = (*env)->GetFieldID(env, clazz, "name", "Ljava/lang/String;");
119 findFirst_attributes = (*env)->GetFieldID(env, clazz, "attributes", "I");
120
121 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$FirstStream");
122 if (clazz == NULL) {
123 return;
124 }
125 findStream_handle = (*env)->GetFieldID(env, clazz, "handle", "J");
126 findStream_name = (*env)->GetFieldID(env, clazz, "name", "Ljava/lang/String;");
127
128 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$VolumeInformation");
129 if (clazz == NULL) {
130 return;
131 }
132 volumeInfo_fsName = (*env)->GetFieldID(env, clazz, "fileSystemName", "Ljava/lang/String;");
133 volumeInfo_volName = (*env)->GetFieldID(env, clazz, "volumeName", "Ljava/lang/String;");
134 volumeInfo_volSN = (*env)->GetFieldID(env, clazz, "volumeSerialNumber", "I");
135 volumeInfo_flags = (*env)->GetFieldID(env, clazz, "flags", "I");
136
137 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$DiskFreeSpace");
138 if (clazz == NULL) {
139 return;
140 }
141 diskSpace_bytesAvailable = (*env)->GetFieldID(env, clazz, "freeBytesAvailable", "J");
142 diskSpace_totalBytes = (*env)->GetFieldID(env, clazz, "totalNumberOfBytes", "J");
143 diskSpace_totalFree = (*env)->GetFieldID(env, clazz, "totalNumberOfFreeBytes", "J");
144
145 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$Account");
146 if (clazz == NULL) {
147 return;
148 }
149 account_domain = (*env)->GetFieldID(env, clazz, "domain", "Ljava/lang/String;");
150 account_name = (*env)->GetFieldID(env, clazz, "name", "Ljava/lang/String;");
151 account_use = (*env)->GetFieldID(env, clazz, "use", "I");
152
153 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$AclInformation");
154 if (clazz == NULL) {
155 return;
156 }
157 aclInfo_aceCount = (*env)->GetFieldID(env, clazz, "aceCount", "I");
158
159 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$CompletionStatus");
160 if (clazz == NULL) {
161 return;
162 }
163 completionStatus_error = (*env)->GetFieldID(env, clazz, "error", "I");
164 completionStatus_bytesTransferred = (*env)->GetFieldID(env, clazz, "bytesTransferred", "I");
165 completionStatus_completionKey = (*env)->GetFieldID(env, clazz, "completionKey", "J");
166
167 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$BackupResult");
168 if (clazz == NULL) {
169 return;
170 }
171 backupResult_bytesTransferred = (*env)->GetFieldID(env, clazz, "bytesTransferred", "I");
172 backupResult_context = (*env)->GetFieldID(env, clazz, "context", "J");
173
174 // get handle to kernel32
175 if (GetModuleHandleExW((GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
176 GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT),
177 (LPCWSTR)&CreateFileW, &h) != 0)
178 {
179 // requires Windows Server 2003 or newer
180 FindFirstStream_func =
181 (FindFirstStream_Proc)GetProcAddress(h, "FindFirstStreamW");
182 FindNextStream_func =
183 (FindNextStream_Proc)GetProcAddress(h, "FindNextStreamW");
184
185 // requires Windows Vista or newer
186 CreateSymbolicLink_func =
187 (CreateSymbolicLinkProc)GetProcAddress(h, "CreateSymbolicLinkW");
188 GetFinalPathNameByHandle_func =
189 (GetFinalPathNameByHandleProc)GetProcAddress(h, "GetFinalPathNameByHandleW");
190 }
191 }
192
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94
95 static void throwWindowsException(JNIEnv* env, DWORD lastError) {
96 jobject x = JNU_NewObjectByName(env, "sun/nio/fs/WindowsException",
97 "(I)V", lastError);
98 if (x != NULL) {
99 (*env)->Throw(env, x);
100 }
101 }
102
103 /**
104 * Initializes jfieldIDs and get address of Win32 calls that are located
105 * at runtime.
106 */
107 JNIEXPORT void JNICALL
108 Java_sun_nio_fs_WindowsNativeDispatcher_initIDs(JNIEnv* env, jclass this)
109 {
110 jclass clazz;
111 HMODULE h;
112
113 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$FirstFile");
114 CHECK_NULL(clazz);
115 findFirst_handle = (*env)->GetFieldID(env, clazz, "handle", "J");
116 CHECK_NULL(findFirst_handle);
117 findFirst_name = (*env)->GetFieldID(env, clazz, "name", "Ljava/lang/String;");
118 CHECK_NULL(findFirst_name);
119 findFirst_attributes = (*env)->GetFieldID(env, clazz, "attributes", "I");
120 CHECK_NULL(findFirst_attributes);
121
122 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$FirstStream");
123 CHECK_NULL(clazz);
124 findStream_handle = (*env)->GetFieldID(env, clazz, "handle", "J");
125 CHECK_NULL(findStream_handle);
126 findStream_name = (*env)->GetFieldID(env, clazz, "name", "Ljava/lang/String;");
127 CHECK_NULL(findStream_name);
128
129 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$VolumeInformation");
130 CHECK_NULL(clazz);
131 volumeInfo_fsName = (*env)->GetFieldID(env, clazz, "fileSystemName", "Ljava/lang/String;");
132 CHECK_NULL(volumeInfo_fsName);
133 volumeInfo_volName = (*env)->GetFieldID(env, clazz, "volumeName", "Ljava/lang/String;");
134 CHECK_NULL(volumeInfo_volName);
135 volumeInfo_volSN = (*env)->GetFieldID(env, clazz, "volumeSerialNumber", "I");
136 CHECK_NULL(volumeInfo_volSN);
137 volumeInfo_flags = (*env)->GetFieldID(env, clazz, "flags", "I");
138 CHECK_NULL(volumeInfo_flags);
139
140 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$DiskFreeSpace");
141 CHECK_NULL(clazz);
142 diskSpace_bytesAvailable = (*env)->GetFieldID(env, clazz, "freeBytesAvailable", "J");
143 CHECK_NULL(diskSpace_bytesAvailable);
144 diskSpace_totalBytes = (*env)->GetFieldID(env, clazz, "totalNumberOfBytes", "J");
145 CHECK_NULL(diskSpace_totalBytes);
146 diskSpace_totalFree = (*env)->GetFieldID(env, clazz, "totalNumberOfFreeBytes", "J");
147 CHECK_NULL(diskSpace_totalFree);
148
149 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$Account");
150 CHECK_NULL(clazz);
151 account_domain = (*env)->GetFieldID(env, clazz, "domain", "Ljava/lang/String;");
152 CHECK_NULL(account_domain);
153 account_name = (*env)->GetFieldID(env, clazz, "name", "Ljava/lang/String;");
154 CHECK_NULL(account_name);
155 account_use = (*env)->GetFieldID(env, clazz, "use", "I");
156 CHECK_NULL(account_use);
157
158 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$AclInformation");
159 CHECK_NULL(clazz);
160 aclInfo_aceCount = (*env)->GetFieldID(env, clazz, "aceCount", "I");
161 CHECK_NULL(aclInfo_aceCount);
162
163 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$CompletionStatus");
164 CHECK_NULL(clazz);
165 completionStatus_error = (*env)->GetFieldID(env, clazz, "error", "I");
166 CHECK_NULL(completionStatus_error);
167 completionStatus_bytesTransferred = (*env)->GetFieldID(env, clazz, "bytesTransferred", "I");
168 CHECK_NULL(completionStatus_bytesTransferred);
169 completionStatus_completionKey = (*env)->GetFieldID(env, clazz, "completionKey", "J");
170 CHECK_NULL(completionStatus_completionKey);
171
172 clazz = (*env)->FindClass(env, "sun/nio/fs/WindowsNativeDispatcher$BackupResult");
173 CHECK_NULL(clazz);
174 backupResult_bytesTransferred = (*env)->GetFieldID(env, clazz, "bytesTransferred", "I");
175 CHECK_NULL(backupResult_bytesTransferred);
176 backupResult_context = (*env)->GetFieldID(env, clazz, "context", "J");
177 CHECK_NULL(backupResult_context);
178
179 // get handle to kernel32
180 if (GetModuleHandleExW((GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS |
181 GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT),
182 (LPCWSTR)&CreateFileW, &h) != 0)
183 {
184 // requires Windows Server 2003 or newer
185 FindFirstStream_func =
186 (FindFirstStream_Proc)GetProcAddress(h, "FindFirstStreamW");
187 FindNextStream_func =
188 (FindNextStream_Proc)GetProcAddress(h, "FindNextStreamW");
189
190 // requires Windows Vista or newer
191 CreateSymbolicLink_func =
192 (CreateSymbolicLinkProc)GetProcAddress(h, "CreateSymbolicLinkW");
193 GetFinalPathNameByHandle_func =
194 (GetFinalPathNameByHandleProc)GetProcAddress(h, "GetFinalPathNameByHandleW");
195 }
196 }
197
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