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Commit | Line | Data |
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c9093a06 | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2004 - 2005, Intel Corporation \r | |
4 | All rights reserved. This program and the accompanying materials \r | |
5 | are licensed and made available under the terms and conditions of the BSD License \r | |
6 | which accompanies this distribution. The full text of the license may be found at \r | |
7 | http://opensource.org/licenses/bsd-license.php \r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. \r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | UnixBlockIo.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | Produce block IO abstractions for real devices on your PC using Win32 APIs.\r | |
19 | The configuration of what devices to mount or emulate comes from NT \r | |
20 | environment variables. The variables must be visible to the Microsoft* \r | |
21 | Developer Studio for them to work.\r | |
22 | \r | |
23 | <F>ixed - Fixed disk like a hard drive.\r | |
24 | <R>emovable - Removable media like a floppy or CD-ROM.\r | |
25 | Read <O>nly - Write protected device.\r | |
26 | Read <W>rite - Read write device.\r | |
27 | <block count> - Decimal number of blocks a device supports.\r | |
28 | <block size> - Decimal number of bytes per block.\r | |
29 | \r | |
30 | NT envirnonment variable contents. '<' and '>' are not part of the variable, \r | |
31 | they are just used to make this help more readable. There should be no \r | |
32 | spaces between the ';'. Extra spaces will break the variable. A '!' is \r | |
33 | used to seperate multiple devices in a variable.\r | |
34 | \r | |
35 | EFI_UNIX_VIRTUAL_DISKS = \r | |
36 | <F | R><O | W>;<block count>;<block size>[!...]\r | |
37 | \r | |
38 | EFI_UNIX_PHYSICAL_DISKS =\r | |
39 | <drive letter>:<F | R><O | W>;<block count>;<block size>[!...]\r | |
40 | \r | |
41 | Virtual Disks: These devices use a file to emulate a hard disk or removable\r | |
42 | media device. \r | |
43 | \r | |
44 | Thus a 20 MB emulated hard drive would look like:\r | |
45 | EFI_UNIX_VIRTUAL_DISKS=FW;40960;512\r | |
46 | \r | |
47 | A 1.44MB emulated floppy with a block size of 1024 would look like:\r | |
48 | EFI_UNIX_VIRTUAL_DISKS=RW;1440;1024\r | |
49 | \r | |
50 | Physical Disks: These devices use NT to open a real device in your system\r | |
51 | \r | |
52 | Thus a 120 MB floppy would look like:\r | |
53 | EFI_UNIX_PHYSICAL_DISKS=B:RW;245760;512\r | |
54 | \r | |
55 | Thus a standard CD-ROM floppy would look like:\r | |
56 | EFI_UNIX_PHYSICAL_DISKS=Z:RO;307200;2048\r | |
57 | \r | |
58 | \r | |
59 | * Other names and brands may be claimed as the property of others.\r | |
60 | \r | |
61 | --*/\r | |
62 | \r | |
63 | #include <fcntl.h> | |
64 | #include <unistd.h> | |
65 | #include "UnixBlockIo.h"\r | |
66 | \r | |
67 | //\r | |
68 | // Block IO protocol member functions\r | |
69 | //\r | |
70 | STATIC\r | |
71 | EFI_STATUS\r | |
72 | EFIAPI\r | |
73 | UnixBlockIoReadBlocks (\r | |
74 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
75 | IN UINT32 MediaId,\r | |
76 | IN EFI_LBA Lba,\r | |
77 | IN UINTN BufferSize,\r | |
78 | OUT VOID *Buffer\r | |
79 | )\r | |
80 | /*++\r | |
81 | \r | |
82 | Routine Description:\r | |
83 | \r | |
84 | TODO: Add function description\r | |
85 | \r | |
86 | Arguments:\r | |
87 | \r | |
88 | This - TODO: add argument description\r | |
89 | MediaId - TODO: add argument description\r | |
90 | Lba - TODO: add argument description\r | |
91 | BufferSize - TODO: add argument description\r | |
92 | Buffer - TODO: add argument description\r | |
93 | \r | |
94 | Returns:\r | |
95 | \r | |
96 | TODO: add return values\r | |
97 | \r | |
98 | --*/\r | |
99 | ;\r | |
100 | \r | |
101 | STATIC\r | |
102 | EFI_STATUS\r | |
103 | EFIAPI\r | |
104 | UnixBlockIoWriteBlocks (\r | |
105 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
106 | IN UINT32 MediaId,\r | |
107 | IN EFI_LBA Lba,\r | |
108 | IN UINTN BufferSize,\r | |
109 | IN VOID *Buffer\r | |
110 | )\r | |
111 | /*++\r | |
112 | \r | |
113 | Routine Description:\r | |
114 | \r | |
115 | TODO: Add function description\r | |
116 | \r | |
117 | Arguments:\r | |
118 | \r | |
119 | This - TODO: add argument description\r | |
120 | MediaId - TODO: add argument description\r | |
121 | Lba - TODO: add argument description\r | |
122 | BufferSize - TODO: add argument description\r | |
123 | Buffer - TODO: add argument description\r | |
124 | \r | |
125 | Returns:\r | |
126 | \r | |
127 | TODO: add return values\r | |
128 | \r | |
129 | --*/\r | |
130 | ;\r | |
131 | \r | |
132 | STATIC\r | |
133 | EFI_STATUS\r | |
134 | EFIAPI\r | |
135 | UnixBlockIoFlushBlocks (\r | |
136 | IN EFI_BLOCK_IO_PROTOCOL *This\r | |
137 | )\r | |
138 | /*++\r | |
139 | \r | |
140 | Routine Description:\r | |
141 | \r | |
142 | TODO: Add function description\r | |
143 | \r | |
144 | Arguments:\r | |
145 | \r | |
146 | This - TODO: add argument description\r | |
147 | \r | |
148 | Returns:\r | |
149 | \r | |
150 | TODO: add return values\r | |
151 | \r | |
152 | --*/\r | |
153 | ;\r | |
154 | \r | |
155 | STATIC\r | |
156 | EFI_STATUS\r | |
157 | EFIAPI\r | |
158 | UnixBlockIoResetBlock (\r | |
159 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
160 | IN BOOLEAN ExtendedVerification\r | |
161 | )\r | |
162 | /*++\r | |
163 | \r | |
164 | Routine Description:\r | |
165 | \r | |
166 | TODO: Add function description\r | |
167 | \r | |
168 | Arguments:\r | |
169 | \r | |
170 | This - TODO: add argument description\r | |
171 | ExtendedVerification - TODO: add argument description\r | |
172 | \r | |
173 | Returns:\r | |
174 | \r | |
175 | TODO: add return values\r | |
176 | \r | |
177 | --*/\r | |
178 | ;\r | |
179 | \r | |
180 | //\r | |
181 | // Private Worker functions\r | |
182 | //\r | |
183 | STATIC\r | |
184 | EFI_STATUS\r | |
185 | UnixBlockIoCreateMapping (\r | |
186 | IN EFI_UNIX_IO_PROTOCOL *UnixIo,\r | |
187 | IN EFI_HANDLE EfiDeviceHandle,\r | |
188 | IN CHAR16 *Filename,\r | |
189 | IN BOOLEAN ReadOnly,\r | |
190 | IN BOOLEAN RemovableMedia,\r | |
191 | IN UINTN NumberOfBlocks,\r | |
192 | IN UINTN BlockSize\r | |
193 | )\r | |
194 | /*++\r | |
195 | \r | |
196 | Routine Description:\r | |
197 | \r | |
198 | TODO: Add function description\r | |
199 | \r | |
200 | Arguments:\r | |
201 | \r | |
202 | UnixIo - TODO: add argument description\r | |
203 | EfiDeviceHandle - TODO: add argument description\r | |
204 | Filename - TODO: add argument description\r | |
205 | ReadOnly - TODO: add argument description\r | |
206 | RemovableMedia - TODO: add argument description\r | |
207 | NumberOfBlocks - TODO: add argument description\r | |
208 | BlockSize - TODO: add argument description\r | |
209 | DeviceType - TODO: add argument description\r | |
210 | \r | |
211 | Returns:\r | |
212 | \r | |
213 | TODO: add return values\r | |
214 | \r | |
215 | --*/\r | |
216 | ;\r | |
217 | \r | |
218 | STATIC\r | |
219 | EFI_STATUS\r | |
220 | UnixBlockIoReadWriteCommon (\r | |
221 | IN UNIX_BLOCK_IO_PRIVATE *Private,\r | |
222 | IN UINT32 MediaId,\r | |
223 | IN EFI_LBA Lba,\r | |
224 | IN UINTN BufferSize,\r | |
225 | IN VOID *Buffer,\r | |
226 | IN CHAR8 *CallerName\r | |
227 | )\r | |
228 | /*++\r | |
229 | \r | |
230 | Routine Description:\r | |
231 | \r | |
232 | TODO: Add function description\r | |
233 | \r | |
234 | Arguments:\r | |
235 | \r | |
236 | Private - TODO: add argument description\r | |
237 | MediaId - TODO: add argument description\r | |
238 | Lba - TODO: add argument description\r | |
239 | BufferSize - TODO: add argument description\r | |
240 | Buffer - TODO: add argument description\r | |
241 | CallerName - TODO: add argument description\r | |
242 | \r | |
243 | Returns:\r | |
244 | \r | |
245 | TODO: add return values\r | |
246 | \r | |
247 | --*/\r | |
248 | ;\r | |
249 | \r | |
250 | STATIC\r | |
251 | EFI_STATUS\r | |
252 | UnixBlockIoError (\r | |
253 | IN UNIX_BLOCK_IO_PRIVATE *Private\r | |
254 | )\r | |
255 | /*++\r | |
256 | \r | |
257 | Routine Description:\r | |
258 | \r | |
259 | TODO: Add function description\r | |
260 | \r | |
261 | Arguments:\r | |
262 | \r | |
263 | Private - TODO: add argument description\r | |
264 | \r | |
265 | Returns:\r | |
266 | \r | |
267 | TODO: add return values\r | |
268 | \r | |
269 | --*/\r | |
270 | ;\r | |
271 | \r | |
272 | STATIC\r | |
273 | EFI_STATUS\r | |
274 | UnixBlockIoOpenDevice (\r | |
275 | UNIX_BLOCK_IO_PRIVATE *Private\r | |
276 | )\r | |
277 | /*++\r | |
278 | \r | |
279 | Routine Description:\r | |
280 | \r | |
281 | TODO: Add function description\r | |
282 | \r | |
283 | Arguments:\r | |
284 | \r | |
285 | Private - TODO: add argument description\r | |
286 | \r | |
287 | Returns:\r | |
288 | \r | |
289 | TODO: add return values\r | |
290 | \r | |
291 | --*/\r | |
292 | ;\r | |
293 | \r | |
294 | STATIC\r | |
295 | CHAR16 *\r | |
296 | GetNextElementPastTerminator (\r | |
297 | IN CHAR16 *EnvironmentVariable,\r | |
298 | IN CHAR16 Terminator\r | |
299 | )\r | |
300 | /*++\r | |
301 | \r | |
302 | Routine Description:\r | |
303 | \r | |
304 | TODO: Add function description\r | |
305 | \r | |
306 | Arguments:\r | |
307 | \r | |
308 | EnvironmentVariable - TODO: add argument description\r | |
309 | Terminator - TODO: add argument description\r | |
310 | \r | |
311 | Returns:\r | |
312 | \r | |
313 | TODO: add return values\r | |
314 | \r | |
315 | --*/\r | |
316 | ;\r | |
317 | EFI_DRIVER_BINDING_PROTOCOL gUnixBlockIoDriverBinding = {\r | |
318 | UnixBlockIoDriverBindingSupported,\r | |
319 | UnixBlockIoDriverBindingStart,\r | |
320 | UnixBlockIoDriverBindingStop,\r | |
321 | 0x10,\r | |
322 | NULL,\r | |
323 | NULL\r | |
324 | };\r | |
325 | \r | |
326 | EFI_STATUS\r | |
327 | EFIAPI\r | |
328 | UnixBlockIoDriverBindingSupported (\r | |
329 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
330 | IN EFI_HANDLE Handle,\r | |
331 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
332 | )\r | |
333 | /*++\r | |
334 | \r | |
335 | Routine Description:\r | |
336 | \r | |
337 | Arguments:\r | |
338 | \r | |
339 | Returns:\r | |
340 | \r | |
341 | None\r | |
342 | \r | |
343 | --*/\r | |
344 | // TODO: This - add argument and description to function comment\r | |
345 | // TODO: Handle - add argument and description to function comment\r | |
346 | // TODO: RemainingDevicePath - add argument and description to function comment\r | |
347 | {\r | |
348 | EFI_STATUS Status;\r | |
349 | EFI_UNIX_IO_PROTOCOL *UnixIo;\r | |
350 | \r | |
351 | //\r | |
352 | // Open the IO Abstraction(s) needed to perform the supported test\r | |
353 | //\r | |
354 | Status = gBS->OpenProtocol (\r | |
355 | Handle,\r | |
356 | &gEfiUnixIoProtocolGuid,\r | |
357 | (VOID **)&UnixIo,\r | |
358 | This->DriverBindingHandle,\r | |
359 | Handle,\r | |
360 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
361 | );\r | |
362 | if (EFI_ERROR (Status)) {\r | |
363 | return Status;\r | |
364 | }\r | |
365 | \r | |
366 | //\r | |
367 | // Make sure the UnixThunkProtocol is valid\r | |
368 | //\r | |
369 | Status = EFI_UNSUPPORTED;\r | |
370 | if (UnixIo->UnixThunk->Signature == EFI_UNIX_THUNK_PROTOCOL_SIGNATURE) {\r | |
371 | \r | |
372 | //\r | |
373 | // Check the GUID to see if this is a handle type the driver supports\r | |
374 | //\r | |
375 | if (CompareGuid (UnixIo->TypeGuid, &gEfiUnixVirtualDisksGuid) ) { | |
376 | Status = EFI_SUCCESS;\r | |
377 | }\r | |
378 | }\r | |
379 | \r | |
380 | //\r | |
381 | // Close the I/O Abstraction(s) used to perform the supported test\r | |
382 | //\r | |
383 | gBS->CloseProtocol (\r | |
384 | Handle,\r | |
385 | &gEfiUnixIoProtocolGuid,\r | |
386 | This->DriverBindingHandle,\r | |
387 | Handle\r | |
388 | );\r | |
389 | \r | |
390 | return Status;\r | |
391 | }\r | |
392 | \r | |
393 | EFI_STATUS\r | |
394 | EFIAPI\r | |
395 | UnixBlockIoDriverBindingStart (\r | |
396 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
397 | IN EFI_HANDLE Handle,\r | |
398 | IN EFI_DEVICE_PATH_PROTOCOL *RemainingDevicePath\r | |
399 | )\r | |
400 | /*++\r | |
401 | \r | |
402 | Routine Description:\r | |
403 | \r | |
404 | Arguments:\r | |
405 | \r | |
406 | Returns:\r | |
407 | \r | |
408 | None\r | |
409 | \r | |
410 | --*/\r | |
411 | // TODO: This - add argument and description to function comment\r | |
412 | // TODO: Handle - add argument and description to function comment\r | |
413 | // TODO: RemainingDevicePath - add argument and description to function comment\r | |
414 | {\r | |
415 | EFI_STATUS Status;\r | |
416 | EFI_UNIX_IO_PROTOCOL *UnixIo;\r | |
417 | CHAR16 Buffer[FILENAME_BUFFER_SIZE];\r | |
418 | CHAR16 *Str;\r | |
419 | BOOLEAN RemovableMedia;\r | |
420 | BOOLEAN WriteProtected;\r | |
421 | UINTN NumberOfBlocks;\r | |
422 | UINTN BlockSize;\r | |
423 | INTN i; | |
424 | \r | |
425 | //\r | |
426 | // Grab the protocols we need\r | |
427 | //\r | |
428 | Status = gBS->OpenProtocol (\r | |
429 | Handle,\r | |
430 | &gEfiUnixIoProtocolGuid,\r | |
431 | (void *)&UnixIo,\r | |
432 | This->DriverBindingHandle,\r | |
433 | Handle,\r | |
434 | EFI_OPEN_PROTOCOL_BY_DRIVER\r | |
435 | );\r | |
436 | if (EFI_ERROR (Status)) {\r | |
437 | return Status;\r | |
438 | }\r | |
439 | \r | |
440 | //\r | |
441 | // Set DiskType\r | |
442 | //\r | |
443 | if (!CompareGuid (UnixIo->TypeGuid, &gEfiUnixVirtualDisksGuid)) {\r | |
444 | Status = EFI_UNSUPPORTED;\r | |
445 | goto Done;\r | |
446 | }\r | |
447 | \r | |
448 | Status = EFI_NOT_FOUND;\r | |
449 | // Extract filename. | |
450 | Str = UnixIo->EnvString;\r | |
451 | i = 0; | |
452 | while (*Str && *Str != ':') | |
453 | Buffer[i++] = *Str++; | |
454 | Buffer[i] = 0; | |
455 | if (*Str != ':') {\r | |
456 | goto Done;\r | |
457 | }\r | |
458 | \r | |
459 | Str++;\r | |
460 | \r | |
461 | RemovableMedia = FALSE; | |
462 | WriteProtected = TRUE; | |
463 | NumberOfBlocks = 0; | |
464 | BlockSize = 512; | |
465 | do { | |
466 | if (*Str == 'R' || *Str == 'F') {\r | |
467 | RemovableMedia = (BOOLEAN) (*Str == 'R');\r | |
468 | Str++;\r | |
469 | } | |
470 | if (*Str == 'O' || *Str == 'W') {\r | |
471 | WriteProtected = (BOOLEAN) (*Str == 'O');\r | |
472 | Str++; | |
473 | } | |
474 | if (*Str == 0) | |
475 | break; | |
476 | if (*Str != ';') | |
477 | goto Done; | |
478 | Str++; | |
479 | ||
480 | NumberOfBlocks = Atoi (Str);\r | |
481 | Str = GetNextElementPastTerminator (Str, ';');\r | |
482 | if (NumberOfBlocks == 0) | |
483 | break; | |
484 | ||
485 | BlockSize = Atoi (Str);\r | |
486 | if (BlockSize != 0) | |
487 | Str = GetNextElementPastTerminator (Str, ';');\r | |
488 | } while (0); | |
489 | ||
490 | //\r | |
491 | // If we get here the variable is valid so do the work.\r | |
492 | //\r | |
493 | Status = UnixBlockIoCreateMapping (\r | |
494 | UnixIo,\r | |
495 | Handle,\r | |
496 | Buffer,\r | |
497 | WriteProtected,\r | |
498 | RemovableMedia,\r | |
499 | NumberOfBlocks,\r | |
500 | BlockSize\r | |
501 | );\r | |
502 | \r | |
503 | Done:\r | |
504 | if (EFI_ERROR (Status)) {\r | |
505 | gBS->CloseProtocol (\r | |
506 | Handle,\r | |
507 | &gEfiUnixIoProtocolGuid,\r | |
508 | This->DriverBindingHandle,\r | |
509 | Handle\r | |
510 | );\r | |
511 | }\r | |
512 | \r | |
513 | return Status;\r | |
514 | }\r | |
515 | \r | |
516 | EFI_STATUS\r | |
517 | EFIAPI\r | |
518 | UnixBlockIoDriverBindingStop (\r | |
519 | IN EFI_DRIVER_BINDING_PROTOCOL *This,\r | |
520 | IN EFI_HANDLE Handle,\r | |
521 | IN UINTN NumberOfChildren,\r | |
522 | IN EFI_HANDLE *ChildHandleBuffer\r | |
523 | )\r | |
524 | /*++\r | |
525 | \r | |
526 | Routine Description:\r | |
527 | \r | |
528 | TODO: Add function description\r | |
529 | \r | |
530 | Arguments:\r | |
531 | \r | |
532 | This - TODO: add argument description\r | |
533 | Handle - TODO: add argument description\r | |
534 | NumberOfChildren - TODO: add argument description\r | |
535 | ChildHandleBuffer - TODO: add argument description\r | |
536 | \r | |
537 | Returns:\r | |
538 | \r | |
539 | EFI_UNSUPPORTED - TODO: Add description for return value\r | |
540 | \r | |
541 | --*/\r | |
542 | {\r | |
543 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
544 | EFI_STATUS Status;\r | |
545 | UNIX_BLOCK_IO_PRIVATE *Private;\r | |
546 | \r | |
547 | //\r | |
548 | // Get our context back\r | |
549 | //\r | |
550 | Status = gBS->OpenProtocol (\r | |
551 | Handle,\r | |
552 | &gEfiBlockIoProtocolGuid,\r | |
553 | (void *)&BlockIo,\r | |
554 | This->DriverBindingHandle,\r | |
555 | Handle,\r | |
556 | EFI_OPEN_PROTOCOL_GET_PROTOCOL\r | |
557 | );\r | |
558 | if (EFI_ERROR (Status)) {\r | |
559 | return EFI_UNSUPPORTED;\r | |
560 | }\r | |
561 | \r | |
562 | Private = UNIX_BLOCK_IO_PRIVATE_DATA_FROM_THIS (BlockIo);\r | |
563 | \r | |
564 | //\r | |
565 | // BugBug: If we need to kick people off, we need to make Uninstall Close the handles.\r | |
566 | // We could pass in our image handle or FLAG our open to be closed via\r | |
567 | // Unistall (== to saying any CloseProtocol will close our open)\r | |
568 | //\r | |
569 | Status = gBS->UninstallMultipleProtocolInterfaces (\r | |
570 | Private->EfiHandle,\r | |
571 | &gEfiBlockIoProtocolGuid,\r | |
572 | &Private->BlockIo,\r | |
573 | NULL\r | |
574 | );\r | |
575 | if (!EFI_ERROR (Status)) {\r | |
576 | \r | |
577 | Status = gBS->CloseProtocol (\r | |
578 | Handle,\r | |
579 | &gEfiUnixIoProtocolGuid,\r | |
580 | This->DriverBindingHandle,\r | |
581 | Handle\r | |
582 | );\r | |
583 | \r | |
584 | //\r | |
585 | // Shut down our device\r | |
586 | //\r | |
587 | Private->UnixThunk->Close (Private->fd);\r | |
588 | \r | |
589 | //\r | |
590 | // Free our instance data\r | |
591 | //\r | |
592 | FreeUnicodeStringTable (Private->ControllerNameTable);\r | |
593 | \r | |
594 | gBS->FreePool (Private);\r | |
595 | }\r | |
596 | \r | |
597 | return Status;\r | |
598 | }\r | |
599 | \r | |
600 | STATIC\r | |
601 | CHAR16 *\r | |
602 | GetNextElementPastTerminator (\r | |
603 | IN CHAR16 *EnvironmentVariable,\r | |
604 | IN CHAR16 Terminator\r | |
605 | )\r | |
606 | /*++\r | |
607 | \r | |
608 | Routine Description:\r | |
609 | \r | |
610 | Worker function to parse environment variables.\r | |
611 | \r | |
612 | Arguments:\r | |
613 | EnvironmentVariable - Envirnment variable to parse.\r | |
614 | \r | |
615 | Terminator - Terminator to parse for.\r | |
616 | \r | |
617 | Returns: \r | |
618 | \r | |
619 | Pointer to next eliment past the first occurence of Terminator or the '\0'\r | |
620 | at the end of the string.\r | |
621 | \r | |
622 | --*/\r | |
623 | {\r | |
624 | CHAR16 *Ptr;\r | |
625 | \r | |
626 | for (Ptr = EnvironmentVariable; *Ptr != '\0'; Ptr++) {\r | |
627 | if (*Ptr == Terminator) {\r | |
628 | Ptr++;\r | |
629 | break;\r | |
630 | }\r | |
631 | }\r | |
632 | \r | |
633 | return Ptr;\r | |
634 | }\r | |
635 | \r | |
636 | STATIC\r | |
637 | EFI_STATUS\r | |
638 | UnixBlockIoCreateMapping (\r | |
639 | IN EFI_UNIX_IO_PROTOCOL *UnixIo,\r | |
640 | IN EFI_HANDLE EfiDeviceHandle,\r | |
641 | IN CHAR16 *Filename,\r | |
642 | IN BOOLEAN ReadOnly,\r | |
643 | IN BOOLEAN RemovableMedia,\r | |
644 | IN UINTN NumberOfBlocks,\r | |
645 | IN UINTN BlockSize\r | |
646 | )\r | |
647 | /*++\r | |
648 | \r | |
649 | Routine Description:\r | |
650 | \r | |
651 | TODO: Add function description\r | |
652 | \r | |
653 | Arguments:\r | |
654 | \r | |
655 | UnixIo - TODO: add argument description\r | |
656 | EfiDeviceHandle - TODO: add argument description\r | |
657 | Filename - TODO: add argument description\r | |
658 | ReadOnly - TODO: add argument description\r | |
659 | RemovableMedia - TODO: add argument description\r | |
660 | NumberOfBlocks - TODO: add argument description\r | |
661 | BlockSize - TODO: add argument description\r | |
662 | DeviceType - TODO: add argument description\r | |
663 | \r | |
664 | Returns:\r | |
665 | \r | |
666 | TODO: add return values\r | |
667 | \r | |
668 | --*/\r | |
669 | {\r | |
670 | EFI_STATUS Status;\r | |
671 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
672 | UNIX_BLOCK_IO_PRIVATE *Private;\r | |
673 | UINTN Index;\r | |
674 | \r | |
675 | Status = gBS->AllocatePool (\r | |
676 | EfiBootServicesData,\r | |
677 | sizeof (UNIX_BLOCK_IO_PRIVATE),\r | |
678 | (void *)&Private\r | |
679 | );\r | |
680 | ASSERT_EFI_ERROR (Status);\r | |
681 | \r | |
682 | EfiInitializeLock (&Private->Lock, EFI_TPL_NOTIFY);\r | |
683 | \r | |
684 | Private->UnixThunk = UnixIo->UnixThunk;\r | |
685 | \r | |
686 | Private->Signature = UNIX_BLOCK_IO_PRIVATE_SIGNATURE;\r | |
687 | Private->LastBlock = NumberOfBlocks - 1;\r | |
688 | Private->BlockSize = BlockSize;\r | |
689 | \r | |
690 | for (Index = 0; Filename[Index] != 0; Index++) {\r | |
691 | Private->Filename[Index] = Filename[Index];\r | |
692 | }\r | |
693 | \r | |
694 | Private->Filename[Index] = 0;\r | |
695 | \r | |
696 | Private->Mode = (ReadOnly ? O_RDONLY : O_RDWR); | |
697 | \r | |
698 | Private->NumberOfBlocks = NumberOfBlocks;\r | |
699 | Private->fd = -1; | |
700 | \r | |
701 | Private->ControllerNameTable = NULL;\r | |
702 | \r | |
703 | AddUnicodeString (\r | |
704 | "eng",\r | |
705 | gUnixBlockIoComponentName.SupportedLanguages,\r | |
706 | &Private->ControllerNameTable,\r | |
707 | Filename\r | |
708 | );\r | |
709 | \r | |
710 | BlockIo = &Private->BlockIo;\r | |
711 | BlockIo->Revision = EFI_BLOCK_IO_PROTOCOL_REVISION;\r | |
712 | BlockIo->Media = &Private->Media;\r | |
713 | BlockIo->Media->BlockSize = Private->BlockSize;\r | |
714 | BlockIo->Media->LastBlock = Private->NumberOfBlocks - 1;\r | |
715 | BlockIo->Media->MediaId = 0;;\r | |
716 | \r | |
717 | BlockIo->Reset = UnixBlockIoResetBlock;\r | |
718 | BlockIo->ReadBlocks = UnixBlockIoReadBlocks;\r | |
719 | BlockIo->WriteBlocks = UnixBlockIoWriteBlocks;\r | |
720 | BlockIo->FlushBlocks = UnixBlockIoFlushBlocks;\r | |
721 | \r | |
722 | BlockIo->Media->ReadOnly = ReadOnly;\r | |
723 | BlockIo->Media->RemovableMedia = RemovableMedia;\r | |
724 | BlockIo->Media->LogicalPartition = FALSE;\r | |
725 | BlockIo->Media->MediaPresent = TRUE;\r | |
726 | BlockIo->Media->WriteCaching = FALSE;\r | |
727 | \r | |
728 | BlockIo->Media->IoAlign = 1;\r | |
729 | \r | |
730 | Private->EfiHandle = EfiDeviceHandle;\r | |
731 | Status = UnixBlockIoOpenDevice (Private);\r | |
732 | if (!EFI_ERROR (Status)) {\r | |
733 | \r | |
734 | Status = gBS->InstallMultipleProtocolInterfaces (\r | |
735 | &Private->EfiHandle,\r | |
736 | &gEfiBlockIoProtocolGuid,\r | |
737 | &Private->BlockIo,\r | |
738 | NULL\r | |
739 | );\r | |
740 | if (EFI_ERROR (Status)) {\r | |
741 | FreeUnicodeStringTable (Private->ControllerNameTable);\r | |
742 | gBS->FreePool (Private);\r | |
743 | }\r | |
744 | \r | |
745 | DEBUG ((EFI_D_INIT, "BlockDevice added: %s\n", Filename));\r | |
746 | }\r | |
747 | \r | |
748 | return Status;\r | |
749 | }\r | |
750 | \r | |
751 | STATIC\r | |
752 | EFI_STATUS\r | |
753 | UnixBlockIoOpenDevice (\r | |
754 | UNIX_BLOCK_IO_PRIVATE *Private\r | |
755 | )\r | |
756 | /*++\r | |
757 | \r | |
758 | Routine Description:\r | |
759 | \r | |
760 | TODO: Add function description\r | |
761 | \r | |
762 | Arguments:\r | |
763 | \r | |
764 | Private - TODO: add argument description\r | |
765 | \r | |
766 | Returns:\r | |
767 | \r | |
768 | TODO: add return values\r | |
769 | \r | |
770 | --*/\r | |
771 | {\r | |
772 | EFI_STATUS Status;\r | |
773 | UINT64 FileSize;\r | |
774 | UINT64 EndOfFile;\r | |
775 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
776 | \r | |
777 | BlockIo = &Private->BlockIo;\r | |
778 | EfiAcquireLock (&Private->Lock);\r | |
779 | \r | |
780 | //\r | |
781 | // If the device is already opened, close it\r | |
782 | //\r | |
783 | if (Private->fd >= 0) { | |
784 | BlockIo->Reset (BlockIo, FALSE);\r | |
785 | }\r | |
786 | \r | |
787 | //\r | |
788 | // Open the device\r | |
789 | //\r | |
790 | Private->fd = Private->UnixThunk->Open | |
791 | (Private->Filename, Private->Mode, 0644); | |
792 | \r | |
793 | if (Private->fd < 0) { | |
794 | DEBUG ((EFI_D_INFO, "PlOpenBlock: Could not open %s\n", | |
795 | Private->Filename)); | |
796 | BlockIo->Media->MediaPresent = FALSE;\r | |
797 | Status = EFI_NO_MEDIA;\r | |
798 | goto Done;\r | |
799 | }\r | |
800 | \r | |
801 | if (!BlockIo->Media->MediaPresent) {\r | |
802 | //\r | |
803 | // BugBug: try to emulate if a CD appears - notify drivers to check it out\r | |
804 | //\r | |
805 | BlockIo->Media->MediaPresent = TRUE;\r | |
806 | EfiReleaseLock (&Private->Lock);\r | |
807 | EfiAcquireLock (&Private->Lock);\r | |
808 | }\r | |
809 | \r | |
810 | //\r | |
811 | // get the size of the file\r | |
812 | //\r | |
813 | Status = SetFilePointer64 (Private, 0, &FileSize, SEEK_END);\r | |
814 | \r | |
815 | if (EFI_ERROR (Status)) {\r | |
816 | FileSize = MultU64x32 (Private->NumberOfBlocks, Private->BlockSize);\r | |
817 | DEBUG ((EFI_D_ERROR, "PlOpenBlock: Could not get filesize of %s\n", Private->Filename));\r | |
818 | Status = EFI_UNSUPPORTED;\r | |
819 | goto Done;\r | |
820 | }\r | |
821 | \r | |
822 | if (Private->NumberOfBlocks == 0) {\r | |
823 | Private->NumberOfBlocks = DivU64x32 (FileSize, Private->BlockSize);\r | |
824 | }\r | |
825 | \r | |
826 | EndOfFile = MultU64x32 (Private->NumberOfBlocks, Private->BlockSize);\r | |
827 | \r | |
828 | if (FileSize != EndOfFile) {\r | |
829 | //\r | |
830 | // file is not the proper size, change it\r | |
831 | //\r | |
832 | DEBUG ((EFI_D_INIT, "PlOpenBlock: Initializing block device: %a\n", Private->Filename));\r | |
833 | \r | |
834 | //\r | |
835 | // first set it to 0\r | |
836 | //\r | |
837 | Private->UnixThunk->FTruncate (Private->fd, 0); | |
838 | \r | |
839 | //\r | |
840 | // then set it to the needed file size (OS will zero fill it)\r | |
841 | //\r | |
842 | Private->UnixThunk->FTruncate (Private->fd, EndOfFile); | |
843 | }\r | |
844 | \r | |
845 | DEBUG ((EFI_D_INIT, "%HPlOpenBlock: opened %s%N\n", Private->Filename));\r | |
846 | Status = EFI_SUCCESS;\r | |
847 | \r | |
848 | Done:\r | |
849 | if (EFI_ERROR (Status)) {\r | |
850 | if (Private->fd >= 0) {\r | |
851 | BlockIo->Reset (BlockIo, FALSE);\r | |
852 | }\r | |
853 | }\r | |
854 | \r | |
855 | EfiReleaseLock (&Private->Lock);\r | |
856 | return Status;\r | |
857 | }\r | |
858 | \r | |
859 | STATIC\r | |
860 | EFI_STATUS\r | |
861 | UnixBlockIoError (\r | |
862 | IN UNIX_BLOCK_IO_PRIVATE *Private\r | |
863 | )\r | |
864 | /*++\r | |
865 | \r | |
866 | Routine Description:\r | |
867 | \r | |
868 | TODO: Add function description\r | |
869 | \r | |
870 | Arguments:\r | |
871 | \r | |
872 | Private - TODO: add argument description\r | |
873 | \r | |
874 | Returns:\r | |
875 | \r | |
876 | TODO: add return values\r | |
877 | \r | |
878 | --*/\r | |
879 | {\r | |
880 | return EFI_DEVICE_ERROR;\r | |
881 | ||
882 | #if 0 | |
883 | EFI_BLOCK_IO_PROTOCOL *BlockIo;\r | |
884 | EFI_STATUS Status;\r | |
885 | BOOLEAN ReinstallBlockIoFlag;\r | |
886 | \r | |
887 | ||
888 | BlockIo = &Private->BlockIo;\r | |
889 | \r | |
890 | switch (Private->UnixThunk->GetLastError ()) {\r | |
891 | \r | |
892 | case ERROR_NOT_READY:\r | |
893 | Status = EFI_NO_MEDIA;\r | |
894 | BlockIo->Media->ReadOnly = FALSE;\r | |
895 | BlockIo->Media->MediaPresent = FALSE;\r | |
896 | ReinstallBlockIoFlag = FALSE;\r | |
897 | break;\r | |
898 | \r | |
899 | case ERROR_WRONG_DISK:\r | |
900 | BlockIo->Media->ReadOnly = FALSE;\r | |
901 | BlockIo->Media->MediaPresent = TRUE;\r | |
902 | BlockIo->Media->MediaId += 1;\r | |
903 | ReinstallBlockIoFlag = TRUE;\r | |
904 | Status = EFI_MEDIA_CHANGED;\r | |
905 | break;\r | |
906 | \r | |
907 | case ERROR_WRITE_PROTECT:\r | |
908 | BlockIo->Media->ReadOnly = TRUE;\r | |
909 | ReinstallBlockIoFlag = FALSE;\r | |
910 | Status = EFI_WRITE_PROTECTED;\r | |
911 | break;\r | |
912 | \r | |
913 | default:\r | |
914 | ReinstallBlockIoFlag = FALSE;\r | |
915 | Status = EFI_DEVICE_ERROR;\r | |
916 | break;\r | |
917 | }\r | |
918 | \r | |
919 | if (ReinstallBlockIoFlag) {\r | |
920 | BlockIo->Reset (BlockIo, FALSE);\r | |
921 | \r | |
922 | gBS->ReinstallProtocolInterface (\r | |
923 | Private->EfiHandle,\r | |
924 | &gEfiBlockIoProtocolGuid,\r | |
925 | BlockIo,\r | |
926 | BlockIo\r | |
927 | );\r | |
928 | }\r | |
929 | \r | |
930 | return Status;\r | |
931 | #endif | |
932 | }\r | |
933 | \r | |
934 | STATIC\r | |
935 | EFI_STATUS\r | |
936 | UnixBlockIoReadWriteCommon (\r | |
937 | IN UNIX_BLOCK_IO_PRIVATE *Private,\r | |
938 | IN UINT32 MediaId,\r | |
939 | IN EFI_LBA Lba,\r | |
940 | IN UINTN BufferSize,\r | |
941 | IN VOID *Buffer,\r | |
942 | IN CHAR8 *CallerName\r | |
943 | )\r | |
944 | /*++\r | |
945 | \r | |
946 | Routine Description:\r | |
947 | \r | |
948 | TODO: Add function description\r | |
949 | \r | |
950 | Arguments:\r | |
951 | \r | |
952 | Private - TODO: add argument description\r | |
953 | MediaId - TODO: add argument description\r | |
954 | Lba - TODO: add argument description\r | |
955 | BufferSize - TODO: add argument description\r | |
956 | Buffer - TODO: add argument description\r | |
957 | CallerName - TODO: add argument description\r | |
958 | \r | |
959 | Returns:\r | |
960 | \r | |
961 | EFI_NO_MEDIA - TODO: Add description for return value\r | |
962 | EFI_MEDIA_CHANGED - TODO: Add description for return value\r | |
963 | EFI_INVALID_PARAMETER - TODO: Add description for return value\r | |
964 | EFI_SUCCESS - TODO: Add description for return value\r | |
965 | EFI_BAD_BUFFER_SIZE - TODO: Add description for return value\r | |
966 | EFI_INVALID_PARAMETER - TODO: Add description for return value\r | |
967 | EFI_SUCCESS - TODO: Add description for return value\r | |
968 | \r | |
969 | --*/\r | |
970 | {\r | |
971 | EFI_STATUS Status;\r | |
972 | UINTN BlockSize;\r | |
973 | UINT64 LastBlock;\r | |
974 | INT64 DistanceToMove;\r | |
975 | UINT64 DistanceMoved;\r | |
976 | \r | |
977 | if (Private->fd < 0) {\r | |
978 | Status = UnixBlockIoOpenDevice (Private);\r | |
979 | if (EFI_ERROR (Status)) {\r | |
980 | return Status;\r | |
981 | }\r | |
982 | }\r | |
983 | \r | |
984 | if (!Private->Media.MediaPresent) {\r | |
985 | DEBUG ((EFI_D_INIT, "%s: No Media\n", CallerName));\r | |
986 | return EFI_NO_MEDIA;\r | |
987 | }\r | |
988 | \r | |
989 | if (Private->Media.MediaId != MediaId) {\r | |
990 | return EFI_MEDIA_CHANGED;\r | |
991 | }\r | |
992 | \r | |
993 | if ((UINT32) Buffer % Private->Media.IoAlign != 0) {\r | |
994 | return EFI_INVALID_PARAMETER;\r | |
995 | }\r | |
996 | \r | |
997 | //\r | |
998 | // Verify buffer size\r | |
999 | //\r | |
1000 | BlockSize = Private->BlockSize;\r | |
1001 | if (BufferSize == 0) {\r | |
1002 | DEBUG ((EFI_D_INIT, "%s: Zero length read\n", CallerName));\r | |
1003 | return EFI_SUCCESS;\r | |
1004 | }\r | |
1005 | \r | |
1006 | if ((BufferSize % BlockSize) != 0) {\r | |
1007 | DEBUG ((EFI_D_INIT, "%s: Invalid read size\n", CallerName));\r | |
1008 | return EFI_BAD_BUFFER_SIZE;\r | |
1009 | }\r | |
1010 | \r | |
1011 | LastBlock = Lba + (BufferSize / BlockSize) - 1;\r | |
1012 | if (LastBlock > Private->LastBlock) {\r | |
1013 | DEBUG ((EFI_D_INIT, "ReadBlocks: Attempted to read off end of device\n"));\r | |
1014 | return EFI_INVALID_PARAMETER;\r | |
1015 | }\r | |
1016 | //\r | |
1017 | // Seek to End of File\r | |
1018 | //\r | |
1019 | DistanceToMove = MultU64x32 (Lba, BlockSize);\r | |
1020 | Status = SetFilePointer64 (Private, DistanceToMove, &DistanceMoved, SEEK_SET); | |
1021 | \r | |
1022 | if (EFI_ERROR (Status)) {\r | |
1023 | DEBUG ((EFI_D_INIT, "WriteBlocks: SetFilePointer failed\n"));\r | |
1024 | return UnixBlockIoError (Private);\r | |
1025 | }\r | |
1026 | \r | |
1027 | return EFI_SUCCESS;\r | |
1028 | }\r | |
1029 | \r | |
1030 | STATIC\r | |
1031 | EFI_STATUS\r | |
1032 | EFIAPI\r | |
1033 | UnixBlockIoReadBlocks (\r | |
1034 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
1035 | IN UINT32 MediaId,\r | |
1036 | IN EFI_LBA Lba,\r | |
1037 | IN UINTN BufferSize,\r | |
1038 | OUT VOID *Buffer\r | |
1039 | )\r | |
1040 | /*++\r | |
1041 | \r | |
1042 | Routine Description:\r | |
1043 | Read BufferSize bytes from Lba into Buffer.\r | |
1044 | \r | |
1045 | Arguments:\r | |
1046 | This - Protocol instance pointer.\r | |
1047 | MediaId - Id of the media, changes every time the media is replaced.\r | |
1048 | Lba - The starting Logical Block Address to read from\r | |
1049 | BufferSize - Size of Buffer, must be a multiple of device block size.\r | |
1050 | Buffer - Buffer containing read data\r | |
1051 | \r | |
1052 | Returns:\r | |
1053 | EFI_SUCCESS - The data was read correctly from the device.\r | |
1054 | EFI_DEVICE_ERROR - The device reported an error while performing the read.\r | |
1055 | EFI_NO_MEDIA - There is no media in the device.\r | |
1056 | EFI_MEDIA_CHANGED - The MediaId does not matched the current device.\r | |
1057 | EFI_BAD_BUFFER_SIZE - The Buffer was not a multiple of the block size of the \r | |
1058 | device.\r | |
1059 | EFI_INVALID_PARAMETER - The read request contains device addresses that are not \r | |
1060 | valid for the device.\r | |
1061 | \r | |
1062 | --*/\r | |
1063 | {\r | |
1064 | UNIX_BLOCK_IO_PRIVATE *Private;\r | |
1065 | ssize_t len; | |
1066 | EFI_STATUS Status;\r | |
1067 | \r | |
1068 | Private = UNIX_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);\r | |
1069 | \r | |
1070 | Status = UnixBlockIoReadWriteCommon (Private, MediaId, Lba, BufferSize, Buffer, "UnixReadBlocks");\r | |
1071 | if (EFI_ERROR (Status)) {\r | |
1072 | return Status;\r | |
1073 | }\r | |
1074 | \r | |
1075 | len = Private->UnixThunk->Read (Private->fd, Buffer, BufferSize); | |
1076 | if (len != BufferSize) {\r | |
1077 | DEBUG ((EFI_D_INIT, "ReadBlocks: ReadFile failed.\n")); | |
1078 | return UnixBlockIoError (Private);\r | |
1079 | }\r | |
1080 | \r | |
1081 | //\r | |
1082 | // If we wrote then media is present.\r | |
1083 | //\r | |
1084 | This->Media->MediaPresent = TRUE;\r | |
1085 | return EFI_SUCCESS;\r | |
1086 | }\r | |
1087 | \r | |
1088 | STATIC\r | |
1089 | EFI_STATUS\r | |
1090 | EFIAPI\r | |
1091 | UnixBlockIoWriteBlocks (\r | |
1092 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
1093 | IN UINT32 MediaId,\r | |
1094 | IN EFI_LBA Lba,\r | |
1095 | IN UINTN BufferSize,\r | |
1096 | IN VOID *Buffer\r | |
1097 | )\r | |
1098 | /*++\r | |
1099 | \r | |
1100 | Routine Description:\r | |
1101 | Write BufferSize bytes from Lba into Buffer.\r | |
1102 | \r | |
1103 | Arguments:\r | |
1104 | This - Protocol instance pointer.\r | |
1105 | MediaId - Id of the media, changes every time the media is replaced.\r | |
1106 | Lba - The starting Logical Block Address to read from\r | |
1107 | BufferSize - Size of Buffer, must be a multiple of device block size.\r | |
1108 | Buffer - Buffer containing read data\r | |
1109 | \r | |
1110 | Returns:\r | |
1111 | EFI_SUCCESS - The data was written correctly to the device.\r | |
1112 | EFI_WRITE_PROTECTED - The device can not be written to.\r | |
1113 | EFI_DEVICE_ERROR - The device reported an error while performing the write.\r | |
1114 | EFI_NO_MEDIA - There is no media in the device.\r | |
1115 | EFI_MEDIA_CHNAGED - The MediaId does not matched the current device.\r | |
1116 | EFI_BAD_BUFFER_SIZE - The Buffer was not a multiple of the block size of the \r | |
1117 | device.\r | |
1118 | EFI_INVALID_PARAMETER - The write request contains a LBA that is not \r | |
1119 | valid for the device.\r | |
1120 | \r | |
1121 | --*/\r | |
1122 | {\r | |
1123 | UNIX_BLOCK_IO_PRIVATE *Private;\r | |
1124 | ssize_t len; | |
1125 | EFI_STATUS Status;\r | |
1126 | \r | |
1127 | Private = UNIX_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);\r | |
1128 | \r | |
1129 | Status = UnixBlockIoReadWriteCommon (Private, MediaId, Lba, BufferSize, Buffer, "UnixWriteBlocks");\r | |
1130 | if (EFI_ERROR (Status)) {\r | |
1131 | return Status;\r | |
1132 | }\r | |
1133 | \r | |
1134 | len = Private->UnixThunk->Write (Private->fd, Buffer, BufferSize); | |
1135 | if (len != BufferSize) {\r | |
1136 | DEBUG ((EFI_D_INIT, "ReadBlocks: WriteFile failed.\n")); | |
1137 | return UnixBlockIoError (Private);\r | |
1138 | }\r | |
1139 | \r | |
1140 | //\r | |
1141 | // If the write succeeded, we are not write protected and media is present.\r | |
1142 | //\r | |
1143 | This->Media->MediaPresent = TRUE;\r | |
1144 | This->Media->ReadOnly = FALSE;\r | |
1145 | return EFI_SUCCESS;\r | |
1146 | }\r | |
1147 | \r | |
1148 | STATIC\r | |
1149 | EFI_STATUS\r | |
1150 | EFIAPI\r | |
1151 | UnixBlockIoFlushBlocks (\r | |
1152 | IN EFI_BLOCK_IO_PROTOCOL *This\r | |
1153 | )\r | |
1154 | /*++\r | |
1155 | \r | |
1156 | Routine Description:\r | |
1157 | Flush the Block Device.\r | |
1158 | \r | |
1159 | Arguments:\r | |
1160 | This - Protocol instance pointer.\r | |
1161 | \r | |
1162 | Returns:\r | |
1163 | EFI_SUCCESS - All outstanding data was written to the device\r | |
1164 | EFI_DEVICE_ERROR - The device reported an error while writting back the data\r | |
1165 | EFI_NO_MEDIA - There is no media in the device.\r | |
1166 | \r | |
1167 | --*/\r | |
1168 | {\r | |
1169 | return EFI_SUCCESS;\r | |
1170 | }\r | |
1171 | \r | |
1172 | STATIC\r | |
1173 | EFI_STATUS\r | |
1174 | EFIAPI\r | |
1175 | UnixBlockIoResetBlock (\r | |
1176 | IN EFI_BLOCK_IO_PROTOCOL *This,\r | |
1177 | IN BOOLEAN ExtendedVerification\r | |
1178 | )\r | |
1179 | /*++\r | |
1180 | \r | |
1181 | Routine Description:\r | |
1182 | Reset the Block Device.\r | |
1183 | \r | |
1184 | Arguments:\r | |
1185 | This - Protocol instance pointer.\r | |
1186 | ExtendedVerification - Driver may perform diagnostics on reset.\r | |
1187 | \r | |
1188 | Returns:\r | |
1189 | EFI_SUCCESS - The device was reset.\r | |
1190 | EFI_DEVICE_ERROR - The device is not functioning properly and could \r | |
1191 | not be reset.\r | |
1192 | \r | |
1193 | --*/\r | |
1194 | {\r | |
1195 | UNIX_BLOCK_IO_PRIVATE *Private;\r | |
1196 | \r | |
1197 | Private = UNIX_BLOCK_IO_PRIVATE_DATA_FROM_THIS (This);\r | |
1198 | \r | |
1199 | if (Private->fd >= 0) {\r | |
1200 | Private->UnixThunk->Close (Private->fd);\r | |
1201 | Private->fd = -1; | |
1202 | }\r | |
1203 | \r | |
1204 | return EFI_SUCCESS;\r | |
1205 | }\r | |
1206 | \r | |
1207 | UINTN\r | |
1208 | Atoi (\r | |
1209 | CHAR16 *String\r | |
1210 | )\r | |
1211 | /*++\r | |
1212 | \r | |
1213 | Routine Description:\r | |
1214 | \r | |
1215 | Convert a unicode string to a UINTN\r | |
1216 | \r | |
1217 | Arguments:\r | |
1218 | \r | |
1219 | String - Unicode string.\r | |
1220 | \r | |
1221 | Returns: \r | |
1222 | \r | |
1223 | UINTN of the number represented by String. \r | |
1224 | \r | |
1225 | --*/\r | |
1226 | {\r | |
1227 | UINTN Number;\r | |
1228 | CHAR16 *Str;\r | |
1229 | \r | |
1230 | //\r | |
1231 | // skip preceeding white space\r | |
1232 | //\r | |
1233 | Str = String;\r | |
1234 | while ((*Str) && (*Str == ' ')) {\r | |
1235 | Str++;\r | |
1236 | }\r | |
1237 | //\r | |
1238 | // Convert ot a Number\r | |
1239 | //\r | |
1240 | Number = 0;\r | |
1241 | while (*Str != '\0') {\r | |
1242 | if ((*Str >= '0') && (*Str <= '9')) {\r | |
1243 | Number = (Number * 10) +*Str - '0';\r | |
1244 | } else {\r | |
1245 | break;\r | |
1246 | }\r | |
1247 | \r | |
1248 | Str++;\r | |
1249 | }\r | |
1250 | \r | |
1251 | return Number;\r | |
1252 | }\r | |
1253 | \r | |
1254 | EFI_STATUS\r | |
1255 | SetFilePointer64 (\r | |
1256 | IN UNIX_BLOCK_IO_PRIVATE *Private,\r | |
1257 | IN INT64 DistanceToMove,\r | |
1258 | OUT UINT64 *NewFilePointer,\r | |
1259 | IN INTN MoveMethod\r | |
1260 | )\r | |
1261 | /*++\r | |
1262 | \r | |
1263 | This function extends the capability of SetFilePointer to accept 64 bit parameters\r | |
1264 | \r | |
1265 | --*/\r | |
1266 | // TODO: function comment is missing 'Routine Description:'\r | |
1267 | // TODO: function comment is missing 'Arguments:'\r | |
1268 | // TODO: function comment is missing 'Returns:'\r | |
1269 | // TODO: Private - add argument and description to function comment\r | |
1270 | // TODO: DistanceToMove - add argument and description to function comment\r | |
1271 | // TODO: NewFilePointer - add argument and description to function comment\r | |
1272 | // TODO: MoveMethod - add argument and description to function comment\r | |
1273 | {\r | |
1274 | EFI_STATUS Status;\r | |
1275 | off_t res; | |
1276 | \r | |
1277 | res = Private->UnixThunk->Lseek(Private->fd, DistanceToMove, MoveMethod); | |
1278 | if (res == -1) { | |
1279 | Status = EFI_INVALID_PARAMETER;\r | |
1280 | }\r | |
1281 | \r | |
1282 | if (NewFilePointer != NULL) {\r | |
1283 | *NewFilePointer = res; | |
1284 | }\r | |
1285 | \r | |
1286 | return Status;\r | |
1287 | }\r |