1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
|
/** @file
Abstract device driver for the UEFI Console.
Manipulates abstractions for stdin, stdout, stderr.
Copyright (c) 2010 - 2011, Intel Corporation. All rights reserved.<BR>
This program and the accompanying materials are licensed and made available under
the terms and conditions of the BSD License that accompanies this distribution.
The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php.
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#include <Uefi.h>
#include <Library/BaseLib.h>
#include <Library/MemoryAllocationLib.h>
#include <Library/UefiBootServicesTableLib.h>
#include <Protocol/SimpleTextIn.h>
#include <Protocol/SimpleTextOut.h>
#include <LibConfig.h>
#include <sys/EfiSysCall.h>
#include <errno.h>
#include <wctype.h>
#include <wchar.h>
#include <sys/fcntl.h>
#include <kfile.h>
#include <Device/Device.h>
#include <MainData.h>
static const CHAR16* const
stdioNames[NUM_SPECIAL] = {
L"stdin:", L"stdout:", L"stderr:"
};
static const int stdioFlags[NUM_SPECIAL] = {
O_RDONLY, // stdin
O_WRONLY, // stdout
O_WRONLY // stderr
};
static DeviceNode *ConNode[NUM_SPECIAL];
static ConInstance *ConInstanceList;
static wchar_t *ConReadBuf;
/* Flags settable by Ioctl */
static BOOLEAN TtyCooked;
static BOOLEAN TtyEcho;
ssize_t
WideTtyCvt( CHAR16 *dest, const char *buf, size_t n)
{
UINTN i;
wint_t wc;
for(i = 0; i < n; ++i) {
wc = btowc(*buf++);
if( wc == 0) {
break;
};
if(wc < 0) {
wc = BLOCKELEMENT_LIGHT_SHADE;
}
if(wc == L'\n') {
*dest++ = L'\r';
}
*dest++ = (CHAR16)wc;
}
*dest = 0;
return (ssize_t)i;
}
static
int
EFIAPI
da_ConClose(
IN struct __filedes *filp
)
{
ConInstance *Stream;
Stream = BASE_CR(filp->f_ops, ConInstance, Abstraction);
// Quick check to see if Stream looks reasonable
if(Stream->Cookie != CON_COOKIE) { // Cookie == 'IoAb'
EFIerrno = RETURN_INVALID_PARAMETER;
return -1; // Looks like a bad File Descriptor pointer
}
gMD->StdIo[Stream->InstanceNum] = NULL; // Mark the stream as closed
return RETURN_SUCCESS;
}
static
off_t
EFIAPI
da_ConSeek(
struct __filedes *filp,
off_t Position,
int whence ///< Ignored by Console
)
{
ConInstance *Stream;
EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *Proto;
XYoffset CursorPos;
Stream = BASE_CR(filp->f_ops, ConInstance, Abstraction);
// Quick check to see if Stream looks reasonable
if(Stream->Cookie != CON_COOKIE) { // Cookie == 'IoAb'
EFIerrno = RETURN_INVALID_PARAMETER;
return -1; // Looks like a bad This pointer
}
if(Stream->InstanceNum == STDIN_FILENO) {
// Seek is not valid for stdin
EFIerrno = RETURN_UNSUPPORTED;
return -1;
}
// Everything is OK to do the final verification and "seek".
Proto = (EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *)Stream->Dev;
CursorPos.Offset = Position;
EFIerrno = Proto->SetCursorPosition(Proto,
(INTN)CursorPos.XYpos.Column,
(INTN)CursorPos.XYpos.Row);
if(RETURN_ERROR(EFIerrno)) {
return -1;
}
else {
return Position;
}
}
/* Write a NULL terminated WCS to the EFI console.
@param[in,out] BufferSize Number of bytes in Buffer. Set to zero if
the string couldn't be displayed.
@param[in] Buffer The WCS string to be displayed
@return The number of characters written.
*/
static
ssize_t
EFIAPI
da_ConWrite(
IN struct __filedes *filp,
IN off_t *Position,
IN size_t BufferSize,
IN const void *Buffer
)
{
EFI_STATUS Status;
EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *Proto;
ConInstance *Stream;
ssize_t NumChar;
//XYoffset CursorPos;
Stream = BASE_CR(filp->f_ops, ConInstance, Abstraction);
// Quick check to see if Stream looks reasonable
if(Stream->Cookie != CON_COOKIE) { // Cookie == 'IoAb'
EFIerrno = RETURN_INVALID_PARAMETER;
return -1; // Looks like a bad This pointer
}
if(Stream->InstanceNum == STDIN_FILENO) {
// Write is not valid for stdin
EFIerrno = RETURN_UNSUPPORTED;
return -1;
}
// Everything is OK to do the write.
Proto = (EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *)Stream->Dev;
// Convert string from MBCS to WCS and translate \n to \r\n.
NumChar = WideTtyCvt(gMD->UString, (const char *)Buffer, BufferSize);
//if(NumChar > 0) {
// BufferSize = (size_t)(NumChar * sizeof(CHAR16));
//}
BufferSize = NumChar;
//if( Position != NULL) {
// CursorPos.Offset = (UINT64)*Position;
// Status = Proto->SetCursorPosition(Proto,
// (INTN)CursorPos.XYpos.Column,
// (INTN)CursorPos.XYpos.Row);
// if(RETURN_ERROR(Status)) {
// return -1;
// }
//}
// Send the Unicode buffer to the console
Status = Proto->OutputString( Proto, gMD->UString);
// Depending on status, update BufferSize and return
if(RETURN_ERROR(Status)) {
BufferSize = 0; // We don't really know how many characters made it out
}
else {
//BufferSize = NumChar;
Stream->NumWritten += NumChar;
}
EFIerrno = Status;
return BufferSize;
}
/** Read characters from the console input device.
@param[in,out] filp Pointer to file descriptor for this file.
@param[in,out] offset Ignored.
@param[in] BufferSize Buffer size, in bytes.
@param[out] Buffer Buffer in which to place the read characters.
@return Number of bytes actually placed into Buffer.
@todo Handle encodings other than ASCII-7 and UEFI.
**/
static
ssize_t
EFIAPI
da_ConRead(
IN OUT struct __filedes *filp,
IN OUT off_t *offset, // Console ignores this
IN size_t BufferSize,
OUT VOID *Buffer
)
{
EFI_SIMPLE_TEXT_INPUT_PROTOCOL *Proto;
ConInstance *Stream;
wchar_t *OutPtr;
EFI_INPUT_KEY Key;
UINTN NumChar;
UINTN Edex;
EFI_STATUS Status = RETURN_SUCCESS;
UINTN i;
char EchoBuff[MB_CUR_MAX + 1];
int NumEcho;
Stream = BASE_CR(filp->f_ops, ConInstance, Abstraction);
// Quick check to see if Stream looks reasonable
if(Stream->Cookie != CON_COOKIE) { // Cookie == 'IoAb'
EFIerrno = RETURN_INVALID_PARAMETER;
return -1; // Looks like a bad This pointer
}
if(Stream->InstanceNum != STDIN_FILENO) {
// Read only valid for stdin
EFIerrno = RETURN_UNSUPPORTED;
return -1;
}
// It looks like things are OK for trying to read
// We will accumulate *BufferSize characters or until we encounter
// an "activation" character. Currently any control character.
Proto = (EFI_SIMPLE_TEXT_INPUT_PROTOCOL *)Stream->Dev;
OutPtr = ConReadBuf;
NumChar = (BufferSize > MAX_INPUT)? MAX_INPUT : BufferSize;
i = 0;
do {
if((Stream->UnGetKey.UnicodeChar == CHAR_NULL) && (Stream->UnGetKey.ScanCode == SCAN_NULL)) {
Status = gBS->WaitForEvent( 1, &Proto->WaitForKey, &Edex);
if(Status != RETURN_SUCCESS) {
break;
}
Status = Proto->ReadKeyStroke(Proto, &Key);
if(Status != RETURN_SUCCESS) {
break;
}
}
else {
Key.ScanCode = Stream->UnGetKey.ScanCode;
Key.UnicodeChar = Stream->UnGetKey.UnicodeChar;
Stream->UnGetKey.ScanCode = SCAN_NULL;
Stream->UnGetKey.UnicodeChar = CHAR_NULL;
}
if(Key.ScanCode == SCAN_NULL) {
NumEcho = 0;
if(TtyCooked && (Key.UnicodeChar == CHAR_CARRIAGE_RETURN)) {
*OutPtr++ = CHAR_LINEFEED;
NumEcho = wctomb(EchoBuff, CHAR_LINEFEED);
}
else {
*OutPtr++ = Key.UnicodeChar;
NumEcho = wctomb(EchoBuff, Key.UnicodeChar);
}
++i;
EchoBuff[NumEcho] = 0; /* Terminate the Echo buffer */
if(TtyEcho) {
/* Echo the character just input */
da_ConWrite(&gMD->fdarray[STDOUT_FILENO], NULL, 2, EchoBuff);
}
}
if(iswcntrl(Key.UnicodeChar)) { // If a control character, or a scan code
break;
}
} while(i < NumChar);
*OutPtr = L'\0'; // Terminate the input buffer
/* Convert the input buffer and place in Buffer.
If the fully converted input buffer won't fit, write what will and
leave the rest in ConReadBuf with ConReadLeft indicating how many
unconverted characters remain in ConReadBuf.
*/
NumEcho = (int)wcstombs(Buffer, ConReadBuf, BufferSize); /* Re-use NumEcho to hold number of bytes in Buffer */
/* More work needs to be done before locales other than C can be supported. */
EFIerrno = Status;
return (ssize_t)NumEcho; // Will be 0 if we didn't get a key
}
/** Console-specific helper function for the fstat() function.
st_size Set to number of characters read for stdin and number written for stdout and stderr.
st_physsize 1 for stdin, 0 if QueryMode error, else max X and Y coordinates for the current mode.
st_curpos 0 for stdin, current X & Y coordinates for stdout and stderr
st_blksize Set to 1 since this is a character device
All other members of the stat structure are left unchanged.
**/
static
int
EFIAPI
da_ConStat(
struct __filedes *filp,
struct stat *Buffer,
void *Something
)
{
ConInstance *Stream;
EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *Proto;
XYoffset CursorPos;
INT32 OutMode;
UINTN ModeCol;
UINTN ModeRow;
// ConGetInfo
Stream = BASE_CR(filp->f_ops, ConInstance, Abstraction);
// Quick check to see if Stream looks reasonable
if ((Stream->Cookie != CON_COOKIE) || // Cookie == 'IoAb'
(Buffer == NULL))
{
EFIerrno = RETURN_INVALID_PARAMETER;
return -1;
}
// All of our parameters are correct, so fill in the information.
Buffer->st_blksize = 1;
// ConGetPosition
if(Stream->InstanceNum == STDIN_FILENO) {
// This is stdin
Buffer->st_curpos = 0;
Buffer->st_size = (off_t)Stream->NumRead;
Buffer->st_physsize = 1;
}
else {
Proto = (EFI_SIMPLE_TEXT_OUTPUT_PROTOCOL *)Stream->Dev;
CursorPos.XYpos.Column = (UINT32)Proto->Mode->CursorColumn;
CursorPos.XYpos.Row = (UINT32)Proto->Mode->CursorRow;
Buffer->st_curpos = (off_t)CursorPos.Offset;
Buffer->st_size = (off_t)Stream->NumWritten;
OutMode = Proto->Mode->Mode;
EFIerrno = Proto->QueryMode(Proto, (UINTN)OutMode, &ModeCol, &ModeRow);
if(RETURN_ERROR(EFIerrno)) {
Buffer->st_physsize = 0;
}
else {
CursorPos.XYpos.Column = (UINT32)ModeCol;
CursorPos.XYpos.Row = (UINT32)ModeRow;
Buffer->st_physsize = (off_t)CursorPos.Offset;
}
}
return 0;
}
static
int
EFIAPI
da_ConIoctl(
struct __filedes *filp,
ULONGN cmd,
void *argp
)
{
return -EPERM;
}
/** Open an abstract Console Device.
**/
int
EFIAPI
da_ConOpen(
DeviceNode *DevNode,
struct __filedes *filp,
int DevInstance, // Not used for console devices
wchar_t *Path, // Not used for console devices
wchar_t *MPath // Not used for console devices
)
{
ConInstance *Stream;
if((filp == NULL) ||
(DevNode == NULL))
{
EFIerrno = RETURN_INVALID_PARAMETER;
errno = EINVAL;
return -1;
}
Stream = (ConInstance *)DevNode->InstanceList;
// Quick check to see if Stream looks reasonable
if(Stream->Cookie != CON_COOKIE) { // Cookie == 'IoAb'
EFIerrno = RETURN_INVALID_PARAMETER;
errno = EINVAL;
return -1; // Looks like a bad This pointer
}
gMD->StdIo[Stream->InstanceNum] = Stream;
filp->f_iflags |= (S_IFREG | _S_IFCHR | _S_ICONSOLE);
filp->f_offset = 0;
filp->f_ops = &Stream->Abstraction;
return 0;
}
#include <sys/poll.h>
/* Returns a bit mask describing which operations could be completed immediately.
(POLLIN | POLLRDNORM) A Unicode character is available to read
(POLLIN) A ScanCode is ready.
(POLLOUT) The device is ready for output - always set on stdout and stderr.
*/
static
short
EFIAPI
da_ConPoll(
struct __filedes *filp,
short events
)
{
EFI_SIMPLE_TEXT_INPUT_PROTOCOL *Proto;
ConInstance *Stream;
EFI_STATUS Status = RETURN_SUCCESS;
short RdyMask = 0;
Stream = BASE_CR(filp->f_ops, ConInstance, Abstraction);
// Quick check to see if Stream looks reasonable
if(Stream->Cookie != CON_COOKIE) { // Cookie == 'IoAb'
EFIerrno = RETURN_INVALID_PARAMETER;
return POLLNVAL; // Looks like a bad filp pointer
}
if(Stream->InstanceNum == 0) {
// Only input is supported for this device
Proto = (EFI_SIMPLE_TEXT_INPUT_PROTOCOL *)Stream->Dev;
if((Stream->UnGetKey.UnicodeChar == CHAR_NULL) && (Stream->UnGetKey.ScanCode == SCAN_NULL)) {
Status = Proto->ReadKeyStroke(Proto, &Stream->UnGetKey);
if(Status == RETURN_SUCCESS) {
RdyMask = POLLIN;
if(Stream->UnGetKey.UnicodeChar != CHAR_NULL) {
RdyMask |= POLLRDNORM;
}
}
else {
Stream->UnGetKey.ScanCode = SCAN_NULL;
Stream->UnGetKey.UnicodeChar = CHAR_NULL;
}
}
}
else if(Stream->InstanceNum < NUM_SPECIAL) { // Not 0, is it 1 or 2?
// Only output is supported for this device
RdyMask = POLLOUT;
}
else {
RdyMask = POLLERR; // Not one of the standard streams
}
EFIerrno = Status;
return (RdyMask & (events | POLL_RETONLY));
}
/** Construct the Console stream devices: stdin, stdout, stderr.
Allocate the instance structure and populate it with the information for
each stream device.
**/
RETURN_STATUS
EFIAPI
__Cons_construct(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
ConInstance *Stream;
RETURN_STATUS Status = RETURN_SUCCESS;
int i;
ConInstanceList = (ConInstance *)AllocateZeroPool(NUM_SPECIAL * sizeof(ConInstance));
ConReadBuf = (wchar_t *)AllocateZeroPool((MAX_INPUT + 1) * sizeof(wchar_t));
if((ConInstanceList == NULL) || (ConReadBuf == NULL)) {
return RETURN_OUT_OF_RESOURCES;
}
for( i = 0; i < NUM_SPECIAL; ++i) {
// Get pointer to instance.
Stream = &ConInstanceList[i];
Stream->Cookie = CON_COOKIE;
Stream->InstanceNum = i;
switch(i) {
case STDIN_FILENO:
Stream->Dev = SystemTable->ConIn;
break;
case STDOUT_FILENO:
Stream->Dev = SystemTable->ConOut;
break;
case STDERR_FILENO:
if(SystemTable->StdErr == NULL) {
Stream->Dev = SystemTable->ConOut;
}
else {
Stream->Dev = SystemTable->StdErr;
}
break;
default:
return RETURN_VOLUME_CORRUPTED; // This is a "should never happen" case.
}
Stream->Abstraction.fo_close = &da_ConClose;
Stream->Abstraction.fo_read = &da_ConRead;
Stream->Abstraction.fo_write = &da_ConWrite;
Stream->Abstraction.fo_stat = &da_ConStat;
Stream->Abstraction.fo_lseek = &da_ConSeek;
Stream->Abstraction.fo_fcntl = &fnullop_fcntl;
Stream->Abstraction.fo_ioctl = &da_ConIoctl;
Stream->Abstraction.fo_poll = &da_ConPoll;
Stream->Abstraction.fo_flush = &fnullop_flush;
Stream->Abstraction.fo_delete = &fbadop_delete;
Stream->Abstraction.fo_mkdir = &fbadop_mkdir;
Stream->Abstraction.fo_rmdir = &fbadop_rmdir;
Stream->Abstraction.fo_rename = &fbadop_rename;
Stream->NumRead = 0;
Stream->NumWritten = 0;
Stream->UnGetKey.ScanCode = SCAN_NULL;
Stream->UnGetKey.UnicodeChar = CHAR_NULL;
if(Stream->Dev == NULL) {
continue; // No device for this stream.
}
ConNode[i] = __DevRegister(stdioNames[i], NULL, &da_ConOpen, Stream, 1, sizeof(ConInstance), stdioFlags[i]);
if(ConNode[i] == NULL) {
Status = EFIerrno;
break;
}
Stream->Parent = ConNode[i];
}
/* Initialize Ioctl flags until Ioctl is really implemented. */
TtyCooked = TRUE;
TtyEcho = TRUE;
return Status;
}
RETURN_STATUS
EFIAPI
__Cons_deconstruct(
IN EFI_HANDLE ImageHandle,
IN EFI_SYSTEM_TABLE *SystemTable
)
{
int i;
for(i = 0; i < NUM_SPECIAL; ++i) {
if(ConNode[i] != NULL) {
FreePool(ConNode[i]);
}
}
if(ConInstanceList != NULL) {
FreePool(ConInstanceList);
}
if(ConReadBuf != NULL) {
FreePool(ConReadBuf);
}
return RETURN_SUCCESS;
}
/* ######################################################################### */
#if 0 /* Not implemented for Console */
static
int
EFIAPI
da_ConCntl(
struct __filedes *filp,
UINT32,
void *,
void *
)
{
}
static
int
EFIAPI
da_ConFlush(
struct __filedes *filp
)
{
return 0;
}
#endif /* Not implemented for Console */
|