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1 | /** @file\r | |
2 | UDF/ECMA-167 file system driver.\r | |
3 | \r | |
4 | Copyright (C) 2014-2017 Paulo Alcantara <pcacjr@zytor.com>\r | |
5 | \r | |
6 | SPDX-License-Identifier: BSD-2-Clause-Patent\r | |
7 | **/\r | |
8 | \r | |
9 | #include "Udf.h"\r | |
10 | \r | |
11 | //\r | |
12 | // UDF filesystem driver's Global Variables.\r | |
13 | //\r | |
14 | EFI_DRIVER_BINDING_PROTOCOL gUdfDriverBinding = {\r | |
15 | UdfDriverBindingSupported,\r | |
16 | UdfDriverBindingStart,\r | |
17 | UdfDriverBindingStop,\r | |
18 | 0x10,\r | |
19 | NULL,\r | |
20 | NULL\r | |
21 | };\r | |
22 | \r | |
23 | EFI_SIMPLE_FILE_SYSTEM_PROTOCOL gUdfSimpleFsTemplate = {\r | |
24 | EFI_SIMPLE_FILE_SYSTEM_PROTOCOL_REVISION,\r | |
25 | UdfOpenVolume\r | |
26 | };\r | |
27 | \r | |
28 | /**\r | |
29 | Test to see if this driver supports ControllerHandle. Any ControllerHandle\r | |
30 | than contains a BlockIo and DiskIo protocol or a BlockIo2 protocol can be\r | |
31 | supported.\r | |
32 | \r | |
33 | @param[in] This Protocol instance pointer.\r | |
34 | @param[in] ControllerHandle Handle of device to test.\r | |
35 | @param[in] RemainingDevicePath Optional parameter use to pick a specific\r | |
36 | child device to start.\r | |
37 | \r | |
38 | @retval EFI_SUCCESS This driver supports this device.\r | |
39 | @retval EFI_ALREADY_STARTED This driver is already running on this device.\r | |
40 | @retval other This driver does not support this device.\r | |
41 | \r | |
42 | **/\r | |
43 | EFI_STATUS\r | |
44 | EFIAPI\r | |
45 | UdfDriverBindingSupported (\r | |
46 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
47 | IN EFI_HANDLE ControllerHandle,\r | |
48 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
49 | )\r | |
50 | {\r | |
51 | EFI_STATUS Status;\r | |
52 | EFI_DISK_IO_PROTOCOL *DiskIo;\r | |
53 | \r | |
54 | //\r | |
55 | // Open DiskIo protocol on ControllerHandle\r | |
56 | //\r | |
57 | Status = gBS->OpenProtocol (\r | |
58 | ControllerHandle,\r | |
59 | &gEfiDiskIoProtocolGuid,\r | |
60 | (VOID **)&DiskIo,\r | |
61 | This->DriverBindingHandle,\r | |
62 | ControllerHandle,\r | |
63 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
64 | );\r | |
65 | if (EFI_ERROR (Status)) {\r | |
66 | return Status;\r | |
67 | }\r | |
68 | \r | |
69 | //\r | |
70 | // Close DiskIo protocol on ControllerHandle\r | |
71 | //\r | |
72 | gBS->CloseProtocol (\r | |
73 | ControllerHandle,\r | |
74 | &gEfiDiskIoProtocolGuid,\r | |
75 | This->DriverBindingHandle,\r | |
76 | ControllerHandle\r | |
77 | );\r | |
78 | \r | |
79 | //\r | |
80 | // Test whether ControllerHandle supports BlockIo protocol\r | |
81 | //\r | |
82 | Status = gBS->OpenProtocol (\r | |
83 | ControllerHandle,\r | |
84 | &gEfiBlockIoProtocolGuid,\r | |
85 | NULL,\r | |
86 | This->DriverBindingHandle,\r | |
87 | ControllerHandle,\r | |
88 | EFI_OPEN_PROTOCOL_TEST_PROTOCOL\r | |
89 | );\r | |
90 | \r | |
91 | return Status;\r | |
92 | }\r | |
93 | \r | |
94 | /**\r | |
95 | Start this driver on ControllerHandle by opening a Block IO or a Block IO2\r | |
96 | or both, and Disk IO protocol, reading Device Path, and creating a child\r | |
97 | handle with a Disk IO and device path protocol.\r | |
98 | \r | |
99 | @param[in] This Protocol instance pointer.\r | |
100 | @param[in] ControllerHandle Handle of device to bind driver to\r | |
101 | @param[in] RemainingDevicePath Optional parameter use to pick a specific\r | |
102 | child device to start.\r | |
103 | \r | |
104 | @retval EFI_SUCCESS This driver is added to ControllerHandle.\r | |
105 | @retval EFI_ALREADY_STARTED This driver is already running on\r | |
106 | ControllerHandle.\r | |
107 | @retval other This driver does not support this device.\r | |
108 | \r | |
109 | **/\r | |
110 | EFI_STATUS\r | |
111 | EFIAPI\r | |
112 | UdfDriverBindingStart (\r | |
113 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
114 | IN EFI_HANDLE ControllerHandle,\r | |
115 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
116 | )\r | |
117 | {\r | |
118 | EFI_TPL OldTpl;\r | |
119 | EFI_STATUS Status;\r | |
120 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
121 | EFI_DISK_IO_PROTOCOL *DiskIo;\r | |
122 | PRIVATE_UDF_SIMPLE_FS_DATA *PrivFsData;\r | |
123 | \r | |
124 | OldTpl = gBS->RaiseTPL (TPL_CALLBACK);\r | |
125 | \r | |
126 | //\r | |
127 | // Open BlockIo protocol on ControllerHandle\r | |
128 | //\r | |
129 | Status = gBS->OpenProtocol (\r | |
130 | ControllerHandle,\r | |
131 | &gEfiBlockIoProtocolGuid,\r | |
132 | (VOID **)&BlockIo,\r | |
133 | This->DriverBindingHandle,\r | |
134 | ControllerHandle,\r | |
135 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
136 | );\r | |
137 | ASSERT_EFI_ERROR (Status);\r | |
138 | \r | |
139 | //\r | |
140 | // Open DiskIo protocol on ControllerHandle\r | |
141 | //\r | |
142 | Status = gBS->OpenProtocol (\r | |
143 | ControllerHandle,\r | |
144 | &gEfiDiskIoProtocolGuid,\r | |
145 | (VOID **)&DiskIo,\r | |
146 | This->DriverBindingHandle,\r | |
147 | ControllerHandle,\r | |
148 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
149 | );\r | |
150 | ASSERT_EFI_ERROR (Status);\r | |
151 | \r | |
152 | //\r | |
153 | // Check if ControllerHandle supports an UDF file system\r | |
154 | //\r | |
155 | Status = SupportUdfFileSystem (This, ControllerHandle);\r | |
156 | if (EFI_ERROR (Status)) {\r | |
157 | goto Exit;\r | |
158 | }\r | |
159 | \r | |
160 | //\r | |
161 | // Initialize private file system structure\r | |
162 | //\r | |
163 | PrivFsData =\r | |
164 | (PRIVATE_UDF_SIMPLE_FS_DATA *)\r | |
165 | AllocateZeroPool (sizeof (PRIVATE_UDF_SIMPLE_FS_DATA));\r | |
166 | if (PrivFsData == NULL) {\r | |
167 | Status = EFI_OUT_OF_RESOURCES;\r | |
168 | goto Exit;\r | |
169 | }\r | |
170 | \r | |
171 | //\r | |
172 | // Create new child handle\r | |
173 | //\r | |
174 | PrivFsData->Signature = PRIVATE_UDF_SIMPLE_FS_DATA_SIGNATURE;\r | |
175 | PrivFsData->BlockIo = BlockIo;\r | |
176 | PrivFsData->DiskIo = DiskIo;\r | |
177 | PrivFsData->Handle = ControllerHandle;\r | |
178 | \r | |
179 | //\r | |
180 | // Set up SimpleFs protocol\r | |
181 | //\r | |
182 | CopyMem (\r | |
183 | (VOID *)&PrivFsData->SimpleFs,\r | |
184 | (VOID *)&gUdfSimpleFsTemplate,\r | |
185 | sizeof (EFI_SIMPLE_FILE_SYSTEM_PROTOCOL)\r | |
186 | );\r | |
187 | \r | |
188 | //\r | |
189 | // Install child handle\r | |
190 | //\r | |
191 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
192 | &PrivFsData->Handle,\r | |
193 | &gEfiSimpleFileSystemProtocolGuid,\r | |
194 | &PrivFsData->SimpleFs,\r | |
195 | NULL\r | |
196 | );\r | |
197 | \r | |
198 | Exit:\r | |
199 | if (EFI_ERROR (Status)) {\r | |
200 | //\r | |
201 | // Close DiskIo protocol on ControllerHandle\r | |
202 | //\r | |
203 | gBS->CloseProtocol (\r | |
204 | ControllerHandle,\r | |
205 | &gEfiDiskIoProtocolGuid,\r | |
206 | This->DriverBindingHandle,\r | |
207 | ControllerHandle\r | |
208 | );\r | |
209 | //\r | |
210 | // Close BlockIo protocol on ControllerHandle\r | |
211 | //\r | |
212 | gBS->CloseProtocol (\r | |
213 | ControllerHandle,\r | |
214 | &gEfiBlockIoProtocolGuid,\r | |
215 | This->DriverBindingHandle,\r | |
216 | ControllerHandle\r | |
217 | );\r | |
218 | }\r | |
219 | \r | |
220 | gBS->RestoreTPL (OldTpl);\r | |
221 | \r | |
222 | return Status;\r | |
223 | }\r | |
224 | \r | |
225 | /**\r | |
226 | Stop this driver on ControllerHandle. Support stopping any child handles\r | |
227 | created by this driver.\r | |
228 | \r | |
229 | @param This Protocol instance pointer.\r | |
230 | @param ControllerHandle Handle of device to stop driver on\r | |
231 | @param NumberOfChildren Number of Handles in ChildHandleBuffer. If number of\r | |
232 | children is zero stop the entire bus driver.\r | |
233 | @param ChildHandleBuffer List of Child Handles to Stop.\r | |
234 | \r | |
235 | @retval EFI_SUCCESS This driver is removed ControllerHandle\r | |
236 | @retval other This driver was not removed from this device\r | |
237 | \r | |
238 | **/\r | |
239 | EFI_STATUS\r | |
240 | EFIAPI\r | |
241 | UdfDriverBindingStop (\r | |
242 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
243 | IN EFI_HANDLE ControllerHandle,\r | |
244 | IN UINTN NumberOfChildren,\r | |
245 | IN EFI_HANDLE *ChildHandleBuffer\r | |
246 | )\r | |
247 | {\r | |
248 | PRIVATE_UDF_SIMPLE_FS_DATA *PrivFsData;\r | |
249 | EFI_STATUS Status;\r | |
250 | EFI_SIMPLE_FILE_SYSTEM_PROTOCOL *SimpleFs;\r | |
251 | \r | |
252 | //\r | |
253 | // Open SimpleFs protocol on ControllerHandle\r | |
254 | //\r | |
255 | Status = gBS->OpenProtocol (\r | |
256 | ControllerHandle,\r | |
257 | &gEfiSimpleFileSystemProtocolGuid,\r | |
258 | (VOID **)&SimpleFs,\r | |
259 | This->DriverBindingHandle,\r | |
260 | ControllerHandle,\r | |
261 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
262 | );\r | |
263 | if (!EFI_ERROR (Status)) {\r | |
264 | PrivFsData = PRIVATE_UDF_SIMPLE_FS_DATA_FROM_THIS (SimpleFs);\r | |
265 | \r | |
266 | //\r | |
267 | // Uninstall child handle\r | |
268 | //\r | |
269 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
270 | PrivFsData->Handle,\r | |
271 | &gEfiSimpleFileSystemProtocolGuid,\r | |
272 | &PrivFsData->SimpleFs,\r | |
273 | NULL\r | |
274 | );\r | |
275 | \r | |
276 | FreePool ((VOID *)PrivFsData);\r | |
277 | }\r | |
278 | \r | |
279 | if (!EFI_ERROR (Status)) {\r | |
280 | //\r | |
281 | // Close DiskIo protocol on ControllerHandle\r | |
282 | //\r | |
283 | gBS->CloseProtocol (\r | |
284 | ControllerHandle,\r | |
285 | &gEfiDiskIoProtocolGuid,\r | |
286 | This->DriverBindingHandle,\r | |
287 | ControllerHandle\r | |
288 | );\r | |
289 | //\r | |
290 | // Close BlockIo protocol on ControllerHandle\r | |
291 | //\r | |
292 | gBS->CloseProtocol (\r | |
293 | ControllerHandle,\r | |
294 | &gEfiBlockIoProtocolGuid,\r | |
295 | This->DriverBindingHandle,\r | |
296 | ControllerHandle\r | |
297 | );\r | |
298 | }\r | |
299 | \r | |
300 | return Status;\r | |
301 | }\r | |
302 | \r | |
303 | /**\r | |
304 | The user Entry Point for UDF file system driver. The user code starts with\r | |
305 | this function.\r | |
306 | \r | |
307 | @param[in] ImageHandle The firmware allocated handle for the EFI image.\r | |
308 | @param[in] SystemTable A pointer to the EFI System Table.\r | |
309 | \r | |
310 | @retval EFI_SUCCESS The entry point is executed successfully.\r | |
311 | @retval other Some error occurs when executing this entry point.\r | |
312 | \r | |
313 | **/\r | |
314 | EFI_STATUS\r | |
315 | EFIAPI\r | |
316 | InitializeUdf (\r | |
317 | IN EFI_HANDLE ImageHandle,\r | |
318 | IN EFI_SYSTEM_TABLE *SystemTable\r | |
319 | )\r | |
320 | {\r | |
321 | EFI_STATUS Status;\r | |
322 | \r | |
323 | Status = EfiLibInstallDriverBindingComponentName2 (\r | |
324 | ImageHandle,\r | |
325 | SystemTable,\r | |
326 | &gUdfDriverBinding,\r | |
327 | ImageHandle,\r | |
328 | &gUdfComponentName,\r | |
329 | &gUdfComponentName2\r | |
330 | );\r | |
331 | ASSERT_EFI_ERROR (Status);\r | |
332 | \r | |
333 | return Status;\r | |
334 | }\r |