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Added new "badge" option for the "hideui" configuration file token.
[refind] / refind / config.c
1 /*
2 * refind/config.c
3 * Configuration file functions
4 *
5 * Copyright (c) 2006 Christoph Pfisterer
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
10 * met:
11 *
12 * * Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * * Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the
18 * distribution.
19 *
20 * * Neither the name of Christoph Pfisterer nor the names of the
21 * contributors may be used to endorse or promote products derived
22 * from this software without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
25 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
26 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
27 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
28 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
29 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
30 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
31 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
32 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
33 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
34 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
35 */
36
37 /*
38 * Modifications copyright (c) 2012-2015 Roderick W. Smith
39 *
40 * Modifications distributed under the terms of the GNU General Public
41 * License (GPL) version 3 (GPLv3), a copy of which must be distributed
42 * with this source code or binaries made from it.
43 *
44 */
45
46 #include "global.h"
47 #include "lib.h"
48 #include "icns.h"
49 #include "menu.h"
50 #include "config.h"
51 #include "screen.h"
52 #include "../include/refit_call_wrapper.h"
53 #include "../mok/mok.h"
54
55 // constants
56
57 #define LINUX_OPTIONS_FILENAMES L"refind_linux.conf,refind-linux.conf"
58 #define MAXCONFIGFILESIZE (128*1024)
59
60 #define ENCODING_ISO8859_1 (0)
61 #define ENCODING_UTF8 (1)
62 #define ENCODING_UTF16_LE (2)
63
64 #define GetTime ST->RuntimeServices->GetTime
65 #define LAST_MINUTE 1439 /* Last minute of a day */
66
67 static REFIT_MENU_ENTRY MenuEntryReturn = { L"Return to Main Menu", TAG_RETURN, 0, 0, 0, NULL, NULL, NULL };
68
69 //
70 // read a file into a buffer
71 //
72
73 EFI_STATUS ReadFile(IN EFI_FILE_HANDLE BaseDir, IN CHAR16 *FileName, IN OUT REFIT_FILE *File, OUT UINTN *size)
74 {
75 EFI_STATUS Status;
76 EFI_FILE_HANDLE FileHandle;
77 EFI_FILE_INFO *FileInfo;
78 UINT64 ReadSize;
79 CHAR16 Message[256];
80
81 File->Buffer = NULL;
82 File->BufferSize = 0;
83
84 // read the file, allocating a buffer on the way
85 Status = refit_call5_wrapper(BaseDir->Open, BaseDir, &FileHandle, FileName, EFI_FILE_MODE_READ, 0);
86 SPrint(Message, 255, L"while loading the file '%s'", FileName);
87 if (CheckError(Status, Message))
88 return Status;
89
90 FileInfo = LibFileInfo(FileHandle);
91 if (FileInfo == NULL) {
92 // TODO: print and register the error
93 refit_call1_wrapper(FileHandle->Close, FileHandle);
94 return EFI_LOAD_ERROR;
95 }
96 ReadSize = FileInfo->FileSize;
97 FreePool(FileInfo);
98
99 File->BufferSize = (UINTN)ReadSize;
100 File->Buffer = AllocatePool(File->BufferSize);
101 if (File->Buffer == NULL) {
102 size = 0;
103 return EFI_OUT_OF_RESOURCES;
104 } else {
105 *size = File->BufferSize;
106 } // if/else
107 Status = refit_call3_wrapper(FileHandle->Read, FileHandle, &File->BufferSize, File->Buffer);
108 if (CheckError(Status, Message)) {
109 MyFreePool(File->Buffer);
110 File->Buffer = NULL;
111 refit_call1_wrapper(FileHandle->Close, FileHandle);
112 return Status;
113 }
114 Status = refit_call1_wrapper(FileHandle->Close, FileHandle);
115
116 // setup for reading
117 File->Current8Ptr = (CHAR8 *)File->Buffer;
118 File->End8Ptr = File->Current8Ptr + File->BufferSize;
119 File->Current16Ptr = (CHAR16 *)File->Buffer;
120 File->End16Ptr = File->Current16Ptr + (File->BufferSize >> 1);
121
122 // detect encoding
123 File->Encoding = ENCODING_ISO8859_1; // default: 1:1 translation of CHAR8 to CHAR16
124 if (File->BufferSize >= 4) {
125 if (File->Buffer[0] == 0xFF && File->Buffer[1] == 0xFE) {
126 // BOM in UTF-16 little endian (or UTF-32 little endian)
127 File->Encoding = ENCODING_UTF16_LE; // use CHAR16 as is
128 File->Current16Ptr++;
129 } else if (File->Buffer[0] == 0xEF && File->Buffer[1] == 0xBB && File->Buffer[2] == 0xBF) {
130 // BOM in UTF-8
131 File->Encoding = ENCODING_UTF8; // translate from UTF-8 to UTF-16
132 File->Current8Ptr += 3;
133 } else if (File->Buffer[1] == 0 && File->Buffer[3] == 0) {
134 File->Encoding = ENCODING_UTF16_LE; // use CHAR16 as is
135 }
136 // TODO: detect other encodings as they are implemented
137 }
138
139 return EFI_SUCCESS;
140 }
141
142 //
143 // get a single line of text from a file
144 //
145
146 static CHAR16 *ReadLine(REFIT_FILE *File)
147 {
148 CHAR16 *Line, *q;
149 UINTN LineLength;
150
151 if (File->Buffer == NULL)
152 return NULL;
153
154 if (File->Encoding == ENCODING_ISO8859_1 || File->Encoding == ENCODING_UTF8) {
155
156 CHAR8 *p, *LineStart, *LineEnd;
157
158 p = File->Current8Ptr;
159 if (p >= File->End8Ptr)
160 return NULL;
161
162 LineStart = p;
163 for (; p < File->End8Ptr; p++)
164 if (*p == 13 || *p == 10)
165 break;
166 LineEnd = p;
167 for (; p < File->End8Ptr; p++)
168 if (*p != 13 && *p != 10)
169 break;
170 File->Current8Ptr = p;
171
172 LineLength = (UINTN)(LineEnd - LineStart) + 1;
173 Line = AllocatePool(LineLength * sizeof(CHAR16));
174 if (Line == NULL)
175 return NULL;
176
177 q = Line;
178 if (File->Encoding == ENCODING_ISO8859_1) {
179 for (p = LineStart; p < LineEnd; )
180 *q++ = *p++;
181 } else if (File->Encoding == ENCODING_UTF8) {
182 // TODO: actually handle UTF-8
183 for (p = LineStart; p < LineEnd; )
184 *q++ = *p++;
185 }
186 *q = 0;
187
188 } else if (File->Encoding == ENCODING_UTF16_LE) {
189
190 CHAR16 *p, *LineStart, *LineEnd;
191
192 p = File->Current16Ptr;
193 if (p >= File->End16Ptr)
194 return NULL;
195
196 LineStart = p;
197 for (; p < File->End16Ptr; p++)
198 if (*p == 13 || *p == 10)
199 break;
200 LineEnd = p;
201 for (; p < File->End16Ptr; p++)
202 if (*p != 13 && *p != 10)
203 break;
204 File->Current16Ptr = p;
205
206 LineLength = (UINTN)(LineEnd - LineStart) + 1;
207 Line = AllocatePool(LineLength * sizeof(CHAR16));
208 if (Line == NULL)
209 return NULL;
210
211 for (p = LineStart, q = Line; p < LineEnd; )
212 *q++ = *p++;
213 *q = 0;
214
215 } else
216 return NULL; // unsupported encoding
217
218 return Line;
219 }
220
221 // Returns FALSE if *p points to the end of a token, TRUE otherwise.
222 // Also modifies *p **IF** the first and second characters are both
223 // quotes ('"'); it deletes one of them.
224 static BOOLEAN KeepReading(IN OUT CHAR16 *p, IN OUT BOOLEAN *IsQuoted) {
225 BOOLEAN MoreToRead = FALSE;
226 CHAR16 *Temp = NULL;
227
228 if ((p == NULL) || (IsQuoted == NULL))
229 return FALSE;
230
231 if (*p == L'\0')
232 return FALSE;
233
234 if ((*p != ' ' && *p != '\t' && *p != '=' && *p != '#' && *p != ',') || *IsQuoted) {
235 MoreToRead = TRUE;
236 }
237 if (*p == L'"') {
238 if (p[1] == L'"') {
239 Temp = StrDuplicate(&p[1]);
240 if (Temp != NULL) {
241 StrCpy(p, Temp);
242 FreePool(Temp);
243 }
244 MoreToRead = TRUE;
245 } else {
246 *IsQuoted = !(*IsQuoted);
247 MoreToRead = FALSE;
248 } // if/else second character is a quote
249 } // if first character is a quote
250
251 return MoreToRead;
252 } // BOOLEAN KeepReading()
253
254 //
255 // get a line of tokens from a file
256 //
257 UINTN ReadTokenLine(IN REFIT_FILE *File, OUT CHAR16 ***TokenList)
258 {
259 BOOLEAN LineFinished, IsQuoted = FALSE;
260 CHAR16 *Line, *Token, *p;
261 UINTN TokenCount = 0;
262
263 *TokenList = NULL;
264
265 while (TokenCount == 0) {
266 Line = ReadLine(File);
267 if (Line == NULL)
268 return(0);
269
270 p = Line;
271 LineFinished = FALSE;
272 while (!LineFinished) {
273 // skip whitespace & find start of token
274 while ((*p == ' ' || *p == '\t' || *p == '=' || *p == ',') && !IsQuoted)
275 p++;
276 if (*p == 0 || *p == '#')
277 break;
278
279 if (*p == '"') {
280 IsQuoted = !IsQuoted;
281 p++;
282 } // if
283 Token = p;
284
285 // find end of token
286 while (KeepReading(p, &IsQuoted)) {
287 if ((*p == L'/') && !IsQuoted) // Switch Unix-style to DOS-style directory separators
288 *p = L'\\';
289 p++;
290 } // while
291 if (*p == L'\0' || *p == L'#')
292 LineFinished = TRUE;
293 *p++ = 0;
294
295 AddListElement((VOID ***)TokenList, &TokenCount, (VOID *)StrDuplicate(Token));
296 }
297
298 FreePool(Line);
299 }
300 return (TokenCount);
301 } /* ReadTokenLine() */
302
303 VOID FreeTokenLine(IN OUT CHAR16 ***TokenList, IN OUT UINTN *TokenCount)
304 {
305 // TODO: also free the items
306 FreeList((VOID ***)TokenList, TokenCount);
307 }
308
309 // handle a parameter with a single integer argument
310 static VOID HandleInt(IN CHAR16 **TokenList, IN UINTN TokenCount, OUT UINTN *Value)
311 {
312 if (TokenCount == 2) {
313 if (StriCmp(TokenList[1], L"-1") == 0)
314 *Value = -1;
315 else
316 *Value = Atoi(TokenList[1]);
317 }
318 }
319
320 // handle a parameter with a single string argument
321 static VOID HandleString(IN CHAR16 **TokenList, IN UINTN TokenCount, OUT CHAR16 **Target) {
322 if ((TokenCount == 2) && Target) {
323 if ((StrLen(TokenList[1]) > 1) && (TokenList[1][0] == L'+') &&
324 ((TokenList[1][1] == L',') || (TokenList[1][1] == L' '))) {
325 if (*Target) {
326 MergeStrings(Target, TokenList[1] + 2, L',');
327 } else {
328 *Target = StrDuplicate(TokenList[1] + 2);
329 } // if/else
330 } else {
331 MyFreePool(*Target);
332 *Target = StrDuplicate(TokenList[1]);
333 } // if/else
334 } // if
335 } // static VOID HandleString()
336
337 // Handle a parameter with a series of string arguments, to replace or be added to a
338 // comma-delimited list. Passes each token through the CleanUpPathNameSlashes() function
339 // to ensure consistency in subsequent comparisons of filenames. If the first
340 // non-keyword token is "+", the list is added to the existing target string; otherwise,
341 // the tokens replace the current string.
342 static VOID HandleStrings(IN CHAR16 **TokenList, IN UINTN TokenCount, OUT CHAR16 **Target) {
343 UINTN i;
344 BOOLEAN AddMode = FALSE;
345
346 if ((TokenCount > 2) && (StriCmp(TokenList[1], L"+") == 0)) {
347 AddMode = TRUE;
348 }
349
350 if ((*Target != NULL) && !AddMode) {
351 FreePool(*Target);
352 *Target = NULL;
353 } // if
354 for (i = 1; i < TokenCount; i++) {
355 if ((i != 1) || !AddMode) {
356 CleanUpPathNameSlashes(TokenList[i]);
357 MergeStrings(Target, TokenList[i], L',');
358 } // if
359 } // for
360 } // static VOID HandleStrings()
361
362 // Convert TimeString (in "HH:MM" format) to a pure-minute format. Values should be
363 // in the range from 0 (for 00:00, or midnight) to 1439 (for 23:59; aka LAST_MINUTE).
364 // Any value outside that range denotes an error in the specification. Note that if
365 // the input is a number that includes no colon, this function will return the original
366 // number in UINTN form.
367 static UINTN HandleTime(IN CHAR16 *TimeString) {
368 UINTN Hour = 0, Minute = 0, TimeLength, i = 0;
369
370 TimeLength = StrLen(TimeString);
371 while (i < TimeLength) {
372 if (TimeString[i] == L':') {
373 Hour = Minute;
374 Minute = 0;
375 } // if
376 if ((TimeString[i] >= L'0') && (TimeString[i] <= '9')) {
377 Minute *= 10;
378 Minute += (TimeString[i] - L'0');
379 } // if
380 i++;
381 } // while
382 return (Hour * 60 + Minute);
383 } // BOOLEAN HandleTime()
384
385 static BOOLEAN HandleBoolean(IN CHAR16 **TokenList, IN UINTN TokenCount) {
386 BOOLEAN TruthValue = TRUE;
387
388 if ((TokenCount >= 2) && ((StriCmp(TokenList[1], L"0") == 0) ||
389 (StriCmp(TokenList[1], L"false") == 0) ||
390 (StriCmp(TokenList[1], L"off") == 0))) {
391 TruthValue = FALSE;
392 } // if
393
394 return TruthValue;
395 } // BOOLEAN HandleBoolean
396
397 // Sets the default boot loader IF the current time is within the bounds
398 // defined by the third and fourth tokens in the TokenList.
399 static VOID SetDefaultByTime(IN CHAR16 **TokenList, OUT CHAR16 **Default) {
400 EFI_STATUS Status;
401 EFI_TIME CurrentTime;
402 UINTN StartTime = LAST_MINUTE + 1, EndTime = LAST_MINUTE + 1, Now;
403 BOOLEAN SetIt = FALSE;
404
405 StartTime = HandleTime(TokenList[2]);
406 EndTime = HandleTime(TokenList[3]);
407
408 if ((StartTime <= LAST_MINUTE) && (EndTime <= LAST_MINUTE)) {
409 Status = refit_call2_wrapper(GetTime, &CurrentTime, NULL);
410 if (Status != EFI_SUCCESS)
411 return;
412 Now = CurrentTime.Hour * 60 + CurrentTime.Minute;
413
414 if (Now > LAST_MINUTE) { // Shouldn't happen; just being paranoid
415 Print(L"Warning: Impossible system time: %d:%d\n", CurrentTime.Hour, CurrentTime.Minute);
416 return;
417 } // if impossible time
418
419 if (StartTime < EndTime) { // Time range does NOT cross midnight
420 if ((Now >= StartTime) && (Now <= EndTime))
421 SetIt = TRUE;
422 } else { // Time range DOES cross midnight
423 if ((Now >= StartTime) && (Now <= EndTime))
424 SetIt = TRUE;
425 } // if/else time range crosses midnight
426
427 if (SetIt) {
428 MyFreePool(*Default);
429 *Default = StrDuplicate(TokenList[1]);
430 } // if (SetIt)
431 } // if ((StartTime <= LAST_MINUTE) && (EndTime <= LAST_MINUTE))
432 } // VOID SetDefaultByTime()
433
434 // read config file
435 VOID ReadConfig(CHAR16 *FileName)
436 {
437 EFI_STATUS Status;
438 REFIT_FILE File;
439 CHAR16 **TokenList;
440 CHAR16 *FlagName;
441 CHAR16 *TempStr = NULL;
442 UINTN TokenCount, i;
443 EFI_GUID RefindGuid = REFIND_GUID_VALUE;
444
445 // Set a few defaults only if we're loading the default file.
446 if (StriCmp(FileName, GlobalConfig.ConfigFilename) == 0) {
447 MyFreePool(GlobalConfig.AlsoScan);
448 GlobalConfig.AlsoScan = StrDuplicate(ALSO_SCAN_DIRS);
449 MyFreePool(GlobalConfig.DontScanDirs);
450 if (SelfVolume) {
451 if (SelfVolume->VolName) {
452 TempStr = SelfVolume->VolName ? StrDuplicate(SelfVolume->VolName) : NULL;
453 } else {
454 TempStr = AllocateZeroPool(256 * sizeof(CHAR16));
455 if (TempStr != NULL)
456 SPrint(TempStr, 255, L"fs%d", SelfVolume->VolNumber);
457 } // if/else
458 }
459 MergeStrings(&TempStr, SelfDirPath, L':');
460 MergeStrings(&TempStr, MEMTEST_LOCATIONS, L',');
461 GlobalConfig.DontScanDirs = TempStr;
462 MyFreePool(GlobalConfig.DontScanFiles);
463 GlobalConfig.DontScanFiles = StrDuplicate(DONT_SCAN_FILES);
464 MergeStrings(&(GlobalConfig.DontScanFiles), MOK_NAMES, L',');
465 MyFreePool(GlobalConfig.DontScanVolumes);
466 GlobalConfig.DontScanVolumes = StrDuplicate(DONT_SCAN_VOLUMES);
467 GlobalConfig.WindowsRecoveryFiles = StrDuplicate(WINDOWS_RECOVERY_FILES);
468 if (GlobalConfig.DefaultSelection != NULL) {
469 MyFreePool(GlobalConfig.DefaultSelection);
470 GlobalConfig.DefaultSelection = NULL;
471 }
472 Status = EfivarGetRaw(&RefindGuid, L"PreviousBoot", (CHAR8**) &(GlobalConfig.DefaultSelection), &i);
473 if (Status != EFI_SUCCESS)
474 GlobalConfig.DefaultSelection = NULL;
475 } // if
476
477 if (!FileExists(SelfDir, FileName)) {
478 Print(L"Configuration file '%s' missing!\n", FileName);
479 if (!FileExists(SelfDir, L"icons")) {
480 Print(L"Icons directory doesn't exist; setting textonly = TRUE!\n");
481 GlobalConfig.TextOnly = TRUE;
482 }
483 return;
484 }
485
486 Status = ReadFile(SelfDir, FileName, &File, &i);
487 if (EFI_ERROR(Status))
488 return;
489
490 for (;;) {
491 TokenCount = ReadTokenLine(&File, &TokenList);
492 if (TokenCount == 0)
493 break;
494
495 if (StriCmp(TokenList[0], L"timeout") == 0) {
496 HandleInt(TokenList, TokenCount, &(GlobalConfig.Timeout));
497
498 } else if (StriCmp(TokenList[0], L"hideui") == 0) {
499 for (i = 1; i < TokenCount; i++) {
500 FlagName = TokenList[i];
501 if (StriCmp(FlagName, L"banner") == 0) {
502 GlobalConfig.HideUIFlags |= HIDEUI_FLAG_BANNER;
503 } else if (StriCmp(FlagName, L"label") == 0) {
504 GlobalConfig.HideUIFlags |= HIDEUI_FLAG_LABEL;
505 } else if (StriCmp(FlagName, L"singleuser") == 0) {
506 GlobalConfig.HideUIFlags |= HIDEUI_FLAG_SINGLEUSER;
507 } else if (StriCmp(FlagName, L"hwtest") == 0) {
508 GlobalConfig.HideUIFlags |= HIDEUI_FLAG_HWTEST;
509 } else if (StriCmp(FlagName, L"arrows") == 0) {
510 GlobalConfig.HideUIFlags |= HIDEUI_FLAG_ARROWS;
511 } else if (StriCmp(FlagName, L"hints") == 0) {
512 GlobalConfig.HideUIFlags |= HIDEUI_FLAG_HINTS;
513 } else if (StriCmp(FlagName, L"editor") == 0) {
514 GlobalConfig.HideUIFlags |= HIDEUI_FLAG_EDITOR;
515 } else if (StriCmp(FlagName, L"safemode") == 0) {
516 GlobalConfig.HideUIFlags |= HIDEUI_FLAG_SAFEMODE;
517 } else if (StriCmp(FlagName, L"badges") == 0) {
518 GlobalConfig.HideUIFlags |= HIDEUI_FLAG_BADGES;
519 } else if (StriCmp(FlagName, L"all") == 0) {
520 GlobalConfig.HideUIFlags = HIDEUI_FLAG_ALL;
521 } else {
522 Print(L" unknown hideui flag: '%s'\n", FlagName);
523 }
524 }
525
526 } else if (StriCmp(TokenList[0], L"icons_dir") == 0) {
527 HandleString(TokenList, TokenCount, &(GlobalConfig.IconsDir));
528
529 } else if (StriCmp(TokenList[0], L"scanfor") == 0) {
530 for (i = 0; i < NUM_SCAN_OPTIONS; i++) {
531 if (i < TokenCount)
532 GlobalConfig.ScanFor[i] = TokenList[i][0];
533 else
534 GlobalConfig.ScanFor[i] = ' ';
535 }
536
537 } else if (StriCmp(TokenList[0], L"uefi_deep_legacy_scan") == 0) {
538 GlobalConfig.DeepLegacyScan = HandleBoolean(TokenList, TokenCount);
539
540 } else if ((StriCmp(TokenList[0], L"scan_delay") == 0) && (TokenCount == 2)) {
541 HandleInt(TokenList, TokenCount, &(GlobalConfig.ScanDelay));
542
543 } else if (StriCmp(TokenList[0], L"also_scan_dirs") == 0) {
544 HandleStrings(TokenList, TokenCount, &(GlobalConfig.AlsoScan));
545
546 } else if ((StriCmp(TokenList[0], L"don't_scan_volumes") == 0) || (StriCmp(TokenList[0], L"dont_scan_volumes") == 0)) {
547 // Note: Don't use HandleStrings() because it modifies slashes, which might be present in volume name
548 MyFreePool(GlobalConfig.DontScanVolumes);
549 GlobalConfig.DontScanVolumes = NULL;
550 for (i = 1; i < TokenCount; i++) {
551 MergeStrings(&GlobalConfig.DontScanVolumes, TokenList[i], L',');
552 }
553
554 } else if ((StriCmp(TokenList[0], L"don't_scan_dirs") == 0) || (StriCmp(TokenList[0], L"dont_scan_dirs") == 0)) {
555 HandleStrings(TokenList, TokenCount, &(GlobalConfig.DontScanDirs));
556
557 } else if ((StriCmp(TokenList[0], L"don't_scan_files") == 0) || (StriCmp(TokenList[0], L"dont_scan_files") == 0)) {
558 HandleStrings(TokenList, TokenCount, &(GlobalConfig.DontScanFiles));
559
560 } else if (StriCmp(TokenList[0], L"windows_recovery_files") == 0) {
561 HandleStrings(TokenList, TokenCount, &(GlobalConfig.WindowsRecoveryFiles));
562
563 } else if (StriCmp(TokenList[0], L"scan_driver_dirs") == 0) {
564 HandleStrings(TokenList, TokenCount, &(GlobalConfig.DriverDirs));
565
566 } else if (StriCmp(TokenList[0], L"showtools") == 0) {
567 SetMem(GlobalConfig.ShowTools, NUM_TOOLS * sizeof(UINTN), 0);
568 for (i = 1; (i < TokenCount) && (i < NUM_TOOLS); i++) {
569 FlagName = TokenList[i];
570 if (StriCmp(FlagName, L"shell") == 0) {
571 GlobalConfig.ShowTools[i - 1] = TAG_SHELL;
572 } else if (StriCmp(FlagName, L"gptsync") == 0) {
573 GlobalConfig.ShowTools[i - 1] = TAG_GPTSYNC;
574 } else if (StriCmp(FlagName, L"gdisk") == 0) {
575 GlobalConfig.ShowTools[i - 1] = TAG_GDISK;
576 } else if (StriCmp(FlagName, L"about") == 0) {
577 GlobalConfig.ShowTools[i - 1] = TAG_ABOUT;
578 } else if (StriCmp(FlagName, L"exit") == 0) {
579 GlobalConfig.ShowTools[i - 1] = TAG_EXIT;
580 } else if (StriCmp(FlagName, L"reboot") == 0) {
581 GlobalConfig.ShowTools[i - 1] = TAG_REBOOT;
582 } else if (StriCmp(FlagName, L"shutdown") == 0) {
583 GlobalConfig.ShowTools[i - 1] = TAG_SHUTDOWN;
584 } else if (StriCmp(FlagName, L"apple_recovery") == 0) {
585 GlobalConfig.ShowTools[i - 1] = TAG_APPLE_RECOVERY;
586 } else if (StriCmp(FlagName, L"windows_recovery") == 0) {
587 GlobalConfig.ShowTools[i - 1] = TAG_WINDOWS_RECOVERY;
588 } else if (StriCmp(FlagName, L"mok_tool") == 0) {
589 GlobalConfig.ShowTools[i - 1] = TAG_MOK_TOOL;
590 } else if (StriCmp(FlagName, L"firmware") == 0) {
591 GlobalConfig.ShowTools[i - 1] = TAG_FIRMWARE;
592 } else if ((StriCmp(FlagName, L"memtest86") == 0) || (StriCmp(FlagName, L"memtest") == 0)) {
593 GlobalConfig.ShowTools[i - 1] = TAG_MEMTEST;
594 } else if (StriCmp(FlagName, L"netboot") == 0) {
595 GlobalConfig.ShowTools[i - 1] = TAG_NETBOOT;
596 } else {
597 Print(L" unknown showtools flag: '%s'\n", FlagName);
598 }
599 } // showtools options
600
601 } else if (StriCmp(TokenList[0], L"banner") == 0) {
602 HandleString(TokenList, TokenCount, &(GlobalConfig.BannerFileName));
603
604 } else if ((StriCmp(TokenList[0], L"banner_scale") == 0) && (TokenCount == 2)) {
605 if (StriCmp(TokenList[1], L"noscale") == 0) {
606 GlobalConfig.BannerScale = BANNER_NOSCALE;
607 } else if ((StriCmp(TokenList[1], L"fillscreen") == 0) || (StriCmp(TokenList[1], L"fullscreen") == 0)) {
608 GlobalConfig.BannerScale = BANNER_FILLSCREEN;
609 } else {
610 Print(L" unknown banner_type flag: '%s'\n", TokenList[1]);
611 } // if/else
612
613 } else if ((StriCmp(TokenList[0], L"small_icon_size") == 0) && (TokenCount == 2)) {
614 HandleInt(TokenList, TokenCount, &i);
615 if (i >= 32)
616 GlobalConfig.IconSizes[ICON_SIZE_SMALL] = i;
617
618 } else if ((StriCmp(TokenList[0], L"big_icon_size") == 0) && (TokenCount == 2)) {
619 HandleInt(TokenList, TokenCount, &i);
620 if (i >= 32) {
621 GlobalConfig.IconSizes[ICON_SIZE_BIG] = i;
622 GlobalConfig.IconSizes[ICON_SIZE_BADGE] = i / 4;
623 }
624
625 } else if (StriCmp(TokenList[0], L"selection_small") == 0) {
626 HandleString(TokenList, TokenCount, &(GlobalConfig.SelectionSmallFileName));
627
628 } else if (StriCmp(TokenList[0], L"selection_big") == 0) {
629 HandleString(TokenList, TokenCount, &(GlobalConfig.SelectionBigFileName));
630
631 } else if (StriCmp(TokenList[0], L"default_selection") == 0) {
632 if (TokenCount == 4) {
633 SetDefaultByTime(TokenList, &(GlobalConfig.DefaultSelection));
634 } else {
635 HandleString(TokenList, TokenCount, &(GlobalConfig.DefaultSelection));
636 }
637
638 } else if (StriCmp(TokenList[0], L"textonly") == 0) {
639 GlobalConfig.TextOnly = HandleBoolean(TokenList, TokenCount);
640
641 } else if (StriCmp(TokenList[0], L"textmode") == 0) {
642 HandleInt(TokenList, TokenCount, &(GlobalConfig.RequestedTextMode));
643
644 } else if ((StriCmp(TokenList[0], L"resolution") == 0) && ((TokenCount == 2) || (TokenCount == 3))) {
645 GlobalConfig.RequestedScreenWidth = Atoi(TokenList[1]);
646 if (TokenCount == 3)
647 GlobalConfig.RequestedScreenHeight = Atoi(TokenList[2]);
648 else
649 GlobalConfig.RequestedScreenHeight = 0;
650
651 } else if (StriCmp(TokenList[0], L"screensaver") == 0) {
652 HandleInt(TokenList, TokenCount, &(GlobalConfig.ScreensaverTime));
653
654 } else if (StriCmp(TokenList[0], L"use_graphics_for") == 0) {
655 if ((TokenCount == 2) || ((TokenCount > 2) && (StriCmp(TokenList[1], L"+") != 0)))
656 GlobalConfig.GraphicsFor = 0;
657 for (i = 1; i < TokenCount; i++) {
658 if (StriCmp(TokenList[i], L"osx") == 0) {
659 GlobalConfig.GraphicsFor |= GRAPHICS_FOR_OSX;
660 } else if (StriCmp(TokenList[i], L"linux") == 0) {
661 GlobalConfig.GraphicsFor |= GRAPHICS_FOR_LINUX;
662 } else if (StriCmp(TokenList[i], L"elilo") == 0) {
663 GlobalConfig.GraphicsFor |= GRAPHICS_FOR_ELILO;
664 } else if (StriCmp(TokenList[i], L"grub") == 0) {
665 GlobalConfig.GraphicsFor |= GRAPHICS_FOR_GRUB;
666 } else if (StriCmp(TokenList[i], L"windows") == 0) {
667 GlobalConfig.GraphicsFor |= GRAPHICS_FOR_WINDOWS;
668 }
669 } // for (graphics_on tokens)
670
671 } else if ((StriCmp(TokenList[0], L"font") == 0) && (TokenCount == 2)) {
672 egLoadFont(TokenList[1]);
673
674 } else if (StriCmp(TokenList[0], L"scan_all_linux_kernels") == 0) {
675 GlobalConfig.ScanAllLinux = HandleBoolean(TokenList, TokenCount);
676
677 } else if (StriCmp(TokenList[0], L"max_tags") == 0) {
678 HandleInt(TokenList, TokenCount, &(GlobalConfig.MaxTags));
679
680 } else if (StriCmp(TokenList[0], L"enable_and_lock_vmx") == 0) {
681 GlobalConfig.EnableAndLockVMX = HandleBoolean(TokenList, TokenCount);
682
683 } else if ((StriCmp(TokenList[0], L"include") == 0) && (TokenCount == 2) &&
684 (StriCmp(FileName, GlobalConfig.ConfigFilename) == 0)) {
685 if (StriCmp(TokenList[1], FileName) != 0) {
686 ReadConfig(TokenList[1]);
687 }
688
689 }
690
691 FreeTokenLine(&TokenList, &TokenCount);
692 }
693 if ((GlobalConfig.DontScanFiles) && (GlobalConfig.WindowsRecoveryFiles))
694 MergeStrings(&(GlobalConfig.DontScanFiles), GlobalConfig.WindowsRecoveryFiles, L',');
695 MyFreePool(File.Buffer);
696
697 if (!FileExists(SelfDir, L"icons") && !FileExists(SelfDir, GlobalConfig.IconsDir)) {
698 Print(L"Icons directory doesn't exist; setting textonly = TRUE!\n");
699 GlobalConfig.TextOnly = TRUE;
700 }
701 } /* VOID ReadConfig() */
702
703 // Finds a volume with the specified Identifier (a filesystem label, a
704 // partition name, a partition GUID, or a number followed by a colon). If
705 // found, sets *Volume to point to that volume. If not, leaves it unchanged.
706 // Returns TRUE if a match was found, FALSE if not.
707 static BOOLEAN FindVolume(REFIT_VOLUME **Volume, CHAR16 *Identifier) {
708 UINTN i = 0, CountedVolumes = 0, Length;
709 INTN Number = -1;
710 BOOLEAN Found = FALSE, IdIsGuid = FALSE;
711 EFI_GUID VolGuid, NullGuid = NULL_GUID_VALUE;
712
713 VolGuid = StringAsGuid(Identifier);
714 Length = StrLen(Identifier);
715 if ((Length >= 2) && (Identifier[Length - 1] == L':') &&
716 (Identifier[0] >= L'0') && (Identifier[0] <= L'9')) {
717 Number = (INTN) Atoi(Identifier);
718 } else if (IsGuid(Identifier)) {
719 IdIsGuid = TRUE;
720 }
721 while ((i < VolumesCount) && (!Found)) {
722 if (Number >= 0) { // User specified a volume by number
723 if (Volumes[i]->IsReadable) {
724 if (CountedVolumes == Number) {
725 *Volume = Volumes[i];
726 Found = TRUE;
727 }
728 CountedVolumes++;
729 } // if
730 } else { // User specified a volume by label or GUID
731 if ((StriCmp(Identifier, Volumes[i]->VolName) == 0) ||
732 (StriCmp(Identifier, Volumes[i]->PartName) == 0)) {
733 *Volume = Volumes[i];
734 Found = TRUE;
735 } // if
736 if (IdIsGuid && !Found) {
737 if (GuidsAreEqual(&VolGuid, &(Volumes[i]->PartGuid)) && !GuidsAreEqual(&NullGuid, &(Volumes[i]->PartGuid))) {
738 *Volume = Volumes[i];
739 Found = TRUE;
740 } // if
741 } // if
742 } // if/else
743 i++;
744 } // while()
745 return (Found);
746 } // static VOID FindVolume()
747
748 static VOID AddSubmenu(LOADER_ENTRY *Entry, REFIT_FILE *File, REFIT_VOLUME *Volume, CHAR16 *Title) {
749 REFIT_MENU_SCREEN *SubScreen;
750 LOADER_ENTRY *SubEntry;
751 UINTN TokenCount;
752 CHAR16 **TokenList;
753
754 SubScreen = InitializeSubScreen(Entry);
755
756 // Set defaults for the new entry; will be modified based on lines read from the config. file....
757 SubEntry = InitializeLoaderEntry(Entry);
758
759 if ((SubEntry == NULL) || (SubScreen == NULL))
760 return;
761 SubEntry->me.Title = StrDuplicate(Title);
762
763 while (((TokenCount = ReadTokenLine(File, &TokenList)) > 0) && (StriCmp(TokenList[0], L"}") != 0)) {
764
765 if ((StriCmp(TokenList[0], L"loader") == 0) && (TokenCount > 1)) { // set the boot loader filename
766 MyFreePool(SubEntry->LoaderPath);
767 SubEntry->LoaderPath = StrDuplicate(TokenList[1]);
768 SubEntry->DevicePath = FileDevicePath(Volume->DeviceHandle, SubEntry->LoaderPath);
769
770 } else if ((StriCmp(TokenList[0], L"volume") == 0) && (TokenCount > 1)) {
771 if (FindVolume(&Volume, TokenList[1])) {
772 MyFreePool(SubEntry->me.Title);
773 SubEntry->me.Title = AllocateZeroPool(256 * sizeof(CHAR16));
774 SPrint(SubEntry->me.Title, 255, L"Boot %s from %s", (Title != NULL) ? Title : L"Unknown", Volume->VolName);
775 SubEntry->me.BadgeImage = Volume->VolBadgeImage;
776 SubEntry->VolName = Volume->VolName;
777 } // if match found
778
779 } else if (StriCmp(TokenList[0], L"initrd") == 0) {
780 MyFreePool(SubEntry->InitrdPath);
781 SubEntry->InitrdPath = NULL;
782 if (TokenCount > 1) {
783 SubEntry->InitrdPath = StrDuplicate(TokenList[1]);
784 }
785
786 } else if (StriCmp(TokenList[0], L"options") == 0) {
787 MyFreePool(SubEntry->LoadOptions);
788 SubEntry->LoadOptions = NULL;
789 if (TokenCount > 1) {
790 SubEntry->LoadOptions = StrDuplicate(TokenList[1]);
791 } // if/else
792
793 } else if ((StriCmp(TokenList[0], L"add_options") == 0) && (TokenCount > 1)) {
794 MergeStrings(&SubEntry->LoadOptions, TokenList[1], L' ');
795
796 } else if ((StriCmp(TokenList[0], L"graphics") == 0) && (TokenCount > 1)) {
797 SubEntry->UseGraphicsMode = (StriCmp(TokenList[1], L"on") == 0);
798
799 } else if (StriCmp(TokenList[0], L"disabled") == 0) {
800 SubEntry->Enabled = FALSE;
801 } // ief/elseif
802
803 FreeTokenLine(&TokenList, &TokenCount);
804 } // while()
805
806 if (SubEntry->InitrdPath != NULL) {
807 MergeStrings(&SubEntry->LoadOptions, L"initrd=", L' ');
808 MergeStrings(&SubEntry->LoadOptions, SubEntry->InitrdPath, 0);
809 MyFreePool(SubEntry->InitrdPath);
810 SubEntry->InitrdPath = NULL;
811 } // if
812 if (SubEntry->Enabled == TRUE) {
813 AddMenuEntry(SubScreen, (REFIT_MENU_ENTRY *)SubEntry);
814 }
815 Entry->me.SubScreen = SubScreen;
816 } // VOID AddSubmenu()
817
818 // Adds the options from a SINGLE refind.conf stanza to a new loader entry and returns
819 // that entry. The calling function is then responsible for adding the entry to the
820 // list of entries.
821 static LOADER_ENTRY * AddStanzaEntries(REFIT_FILE *File, REFIT_VOLUME *Volume, CHAR16 *Title) {
822 CHAR16 **TokenList;
823 UINTN TokenCount;
824 LOADER_ENTRY *Entry;
825 BOOLEAN DefaultsSet = FALSE, AddedSubmenu = FALSE;
826 REFIT_VOLUME *CurrentVolume = Volume;
827
828 // prepare the menu entry
829 Entry = InitializeLoaderEntry(NULL);
830 if (Entry == NULL)
831 return NULL;
832
833 Entry->Title = StrDuplicate(Title);
834 Entry->me.Title = AllocateZeroPool(256 * sizeof(CHAR16));
835 SPrint(Entry->me.Title, 255, L"Boot %s from %s", (Title != NULL) ? Title : L"Unknown", CurrentVolume->VolName);
836 Entry->me.Row = 0;
837 Entry->me.BadgeImage = CurrentVolume->VolBadgeImage;
838 Entry->VolName = CurrentVolume->VolName;
839
840 // Parse the config file to add options for a single stanza, terminating when the token
841 // is "}" or when the end of file is reached.
842 while (((TokenCount = ReadTokenLine(File, &TokenList)) > 0) && (StriCmp(TokenList[0], L"}") != 0)) {
843 if ((StriCmp(TokenList[0], L"loader") == 0) && (TokenCount > 1)) { // set the boot loader filename
844 Entry->LoaderPath = StrDuplicate(TokenList[1]);
845 Entry->DevicePath = FileDevicePath(CurrentVolume->DeviceHandle, Entry->LoaderPath);
846 SetLoaderDefaults(Entry, TokenList[1], CurrentVolume);
847 MyFreePool(Entry->LoadOptions);
848 Entry->LoadOptions = NULL; // Discard default options, if any
849 DefaultsSet = TRUE;
850
851 } else if ((StriCmp(TokenList[0], L"volume") == 0) && (TokenCount > 1)) {
852 if (FindVolume(&CurrentVolume, TokenList[1])) {
853 MyFreePool(Entry->me.Title);
854 Entry->me.Title = AllocateZeroPool(256 * sizeof(CHAR16));
855 SPrint(Entry->me.Title, 255, L"Boot %s from %s", (Title != NULL) ? Title : L"Unknown", CurrentVolume->VolName);
856 Entry->me.BadgeImage = CurrentVolume->VolBadgeImage;
857 Entry->VolName = CurrentVolume->VolName;
858 } // if match found
859
860 } else if ((StriCmp(TokenList[0], L"icon") == 0) && (TokenCount > 1)) {
861 MyFreePool(Entry->me.Image);
862 Entry->me.Image = egLoadIcon(CurrentVolume->RootDir, TokenList[1], GlobalConfig.IconSizes[ICON_SIZE_BIG]);
863 if (Entry->me.Image == NULL) {
864 Entry->me.Image = DummyImage(GlobalConfig.IconSizes[ICON_SIZE_BIG]);
865 }
866
867 } else if ((StriCmp(TokenList[0], L"initrd") == 0) && (TokenCount > 1)) {
868 MyFreePool(Entry->InitrdPath);
869 Entry->InitrdPath = StrDuplicate(TokenList[1]);
870
871 } else if ((StriCmp(TokenList[0], L"options") == 0) && (TokenCount > 1)) {
872 MyFreePool(Entry->LoadOptions);
873 Entry->LoadOptions = StrDuplicate(TokenList[1]);
874
875 } else if ((StriCmp(TokenList[0], L"ostype") == 0) && (TokenCount > 1)) {
876 if (TokenCount > 1) {
877 Entry->OSType = TokenList[1][0];
878 }
879
880 } else if ((StriCmp(TokenList[0], L"graphics") == 0) && (TokenCount > 1)) {
881 Entry->UseGraphicsMode = (StriCmp(TokenList[1], L"on") == 0);
882
883 } else if (StriCmp(TokenList[0], L"disabled") == 0) {
884 Entry->Enabled = FALSE;
885
886 } else if ((StriCmp(TokenList[0], L"submenuentry") == 0) && (TokenCount > 1)) {
887 AddSubmenu(Entry, File, CurrentVolume, TokenList[1]);
888 AddedSubmenu = TRUE;
889
890 } // set options to pass to the loader program
891 FreeTokenLine(&TokenList, &TokenCount);
892 } // while()
893
894 if (AddedSubmenu)
895 AddMenuEntry(Entry->me.SubScreen, &MenuEntryReturn);
896
897 if (Entry->InitrdPath) {
898 MergeStrings(&Entry->LoadOptions, L"initrd=", L' ');
899 MergeStrings(&Entry->LoadOptions, Entry->InitrdPath, 0);
900 MyFreePool(Entry->InitrdPath);
901 Entry->InitrdPath = NULL;
902 } // if
903
904 if (!DefaultsSet)
905 SetLoaderDefaults(Entry, L"\\EFI\\BOOT\\nemo.efi", CurrentVolume); // user included no "loader" line; use bogus one
906
907 return(Entry);
908 } // static VOID AddStanzaEntries()
909
910 // Read the user-configured menu entries from refind.conf and add or delete
911 // entries based on the contents of that file....
912 VOID ScanUserConfigured(CHAR16 *FileName)
913 {
914 EFI_STATUS Status;
915 REFIT_FILE File;
916 REFIT_VOLUME *Volume;
917 CHAR16 **TokenList;
918 CHAR16 *Title = NULL;
919 UINTN TokenCount, size;
920 LOADER_ENTRY *Entry;
921
922 if (FileExists(SelfDir, FileName)) {
923 Status = ReadFile(SelfDir, FileName, &File, &size);
924 if (EFI_ERROR(Status))
925 return;
926
927 Volume = SelfVolume;
928
929 while ((TokenCount = ReadTokenLine(&File, &TokenList)) > 0) {
930 if ((StriCmp(TokenList[0], L"menuentry") == 0) && (TokenCount > 1)) {
931 Title = StrDuplicate(TokenList[1]);
932 Entry = AddStanzaEntries(&File, Volume, TokenList[1]);
933 if (Entry->Enabled) {
934 if (Entry->me.SubScreen == NULL)
935 GenerateSubScreen(Entry, Volume);
936 AddPreparedLoaderEntry(Entry);
937 } else {
938 MyFreePool(Entry);
939 } // if/else
940 MyFreePool(Title);
941
942 } else if ((StriCmp(TokenList[0], L"include") == 0) && (TokenCount == 2) &&
943 (StriCmp(FileName, GlobalConfig.ConfigFilename) == 0)) {
944 if (StriCmp(TokenList[1], FileName) != 0) {
945 ScanUserConfigured(TokenList[1]);
946 }
947
948 } // if/else if...
949 FreeTokenLine(&TokenList, &TokenCount);
950 } // while()
951 } // if()
952 } // VOID ScanUserConfigured()
953
954 // Create an options file based on /etc/fstab. The resulting file has two options
955 // lines, one of which boots the system with "ro root={rootfs}" and the other of
956 // which boots the system with "ro root={rootfs} single", where "{rootfs}" is the
957 // filesystem identifier associated with the "/" line in /etc/fstab.
958 static REFIT_FILE * GenerateOptionsFromEtcFstab(REFIT_VOLUME *Volume) {
959 UINTN TokenCount, i;
960 REFIT_FILE *Options = NULL, *Fstab = NULL;
961 EFI_STATUS Status;
962 CHAR16 **TokenList, *Line, Root[100];
963
964 if (FileExists(Volume->RootDir, L"\\etc\\fstab")) {
965 Options = AllocateZeroPool(sizeof(REFIT_FILE));
966 Fstab = AllocateZeroPool(sizeof(REFIT_FILE));
967 Status = ReadFile(Volume->RootDir, L"\\etc\\fstab", Fstab, &i);
968 if (CheckError(Status, L"while reading /etc/fstab")) {
969 if (Options != NULL)
970 FreePool(Options);
971 if (Fstab != NULL)
972 FreePool(Fstab);
973 Options = NULL;
974 Fstab = NULL;
975 } else { // File read; locate root fs and create entries
976 Options->Encoding = ENCODING_UTF16_LE;
977 while ((TokenCount = ReadTokenLine(Fstab, &TokenList)) > 0) {
978 if (TokenCount > 2) {
979 Root[0] = '\0';
980 if (StriCmp(TokenList[1], L"\\") == 0) {
981 SPrint(Root, 99, L"%s", TokenList[0]);
982 } else if (StriCmp(TokenList[2], L"\\") == 0) {
983 SPrint(Root, 99, L"%s=%s", TokenList[0], TokenList[1]);
984 } // if/elseif/elseif
985 if (Root[0] != L'\0') {
986 for (i = 0; i < StrLen(Root); i++)
987 if (Root[i] == '\\')
988 Root[i] = '/';
989 Line = PoolPrint(L"\"Boot with normal options\" \"ro root=%s\"\n", Root);
990 MergeStrings((CHAR16 **) &(Options->Buffer), Line, 0);
991 MyFreePool(Line);
992 Line = PoolPrint(L"\"Boot into single-user mode\" \"ro root=%s single\"\n", Root);
993 MergeStrings((CHAR16**) &(Options->Buffer), Line, 0);
994 Options->BufferSize = StrLen((CHAR16*) Options->Buffer) * sizeof(CHAR16);
995 } // if
996 } // if
997 FreeTokenLine(&TokenList, &TokenCount);
998 } // while
999
1000 Options->Current8Ptr = (CHAR8 *)Options->Buffer;
1001 Options->End8Ptr = Options->Current8Ptr + Options->BufferSize;
1002 Options->Current16Ptr = (CHAR16 *)Options->Buffer;
1003 Options->End16Ptr = Options->Current16Ptr + (Options->BufferSize >> 1);
1004
1005 MyFreePool(Fstab->Buffer);
1006 MyFreePool(Fstab);
1007 } // if/else file read error
1008 } // if /etc/fstab exists
1009 return Options;
1010 } // GenerateOptionsFromEtcFstab()
1011
1012
1013 // Read a Linux kernel options file for a Linux boot loader into memory. The LoaderPath
1014 // and Volume variables identify the location of the options file, but not its name --
1015 // you pass this function the filename of the Linux kernel, initial RAM disk, or other
1016 // file in the target directory, and this function finds the file with a name in the
1017 // comma-delimited list of names specified by LINUX_OPTIONS_FILENAMES within that
1018 // directory and loads it. This function tries multiple files because I originally
1019 // used the filename linux.conf, but close on the heels of that decision, the Linux
1020 // kernel developers decided to use that name for a similar purpose, but with a
1021 // different file format. Thus, I'm migrating rEFInd to use the name refind_linux.conf,
1022 // but I want a migration period in which both names are used.
1023 // If a rEFInd options file can't be found, try to generate minimal options from
1024 // /etc/fstab on the same volume as the kernel. This typically works only if the
1025 // kernel is being read from the Linux root filesystem.
1026 //
1027 // The return value is a pointer to the REFIT_FILE handle for the file, or NULL if
1028 // it wasn't found.
1029 REFIT_FILE * ReadLinuxOptionsFile(IN CHAR16 *LoaderPath, IN REFIT_VOLUME *Volume) {
1030 CHAR16 *OptionsFilename, *FullFilename;
1031 BOOLEAN GoOn = TRUE, FileFound = FALSE;
1032 UINTN i = 0, size;
1033 REFIT_FILE *File = NULL;
1034 EFI_STATUS Status;
1035
1036 do {
1037 OptionsFilename = FindCommaDelimited(LINUX_OPTIONS_FILENAMES, i++);
1038 FullFilename = FindPath(LoaderPath);
1039 if ((OptionsFilename != NULL) && (FullFilename != NULL)) {
1040 MergeStrings(&FullFilename, OptionsFilename, '\\');
1041 if (FileExists(Volume->RootDir, FullFilename)) {
1042 File = AllocateZeroPool(sizeof(REFIT_FILE));
1043 Status = ReadFile(Volume->RootDir, FullFilename, File, &size);
1044 if (CheckError(Status, L"while loading the Linux options file")) {
1045 if (File != NULL)
1046 FreePool(File);
1047 File = NULL;
1048 } else {
1049 GoOn = FALSE;
1050 FileFound = TRUE;
1051 } // if/else error
1052 } // if file exists
1053 } else { // a filename string is NULL
1054 GoOn = FALSE;
1055 } // if/else
1056 if (!FileFound)
1057 File = GenerateOptionsFromEtcFstab(Volume);
1058 MyFreePool(OptionsFilename);
1059 MyFreePool(FullFilename);
1060 OptionsFilename = FullFilename = NULL;
1061 } while (GoOn);
1062 return (File);
1063 } // static REFIT_FILE * ReadLinuxOptionsFile()
1064
1065 // Retrieve a single line of options from a Linux kernel options file
1066 CHAR16 * GetFirstOptionsFromFile(IN CHAR16 *LoaderPath, IN REFIT_VOLUME *Volume) {
1067 UINTN TokenCount;
1068 CHAR16 *Options = NULL;
1069 CHAR16 **TokenList;
1070 REFIT_FILE *File;
1071
1072 File = ReadLinuxOptionsFile(LoaderPath, Volume);
1073 if (File != NULL) {
1074 TokenCount = ReadTokenLine(File, &TokenList);
1075 if (TokenCount > 1)
1076 Options = StrDuplicate(TokenList[1]);
1077 FreeTokenLine(&TokenList, &TokenCount);
1078 FreePool(File);
1079 } // if
1080 return Options;
1081 } // static CHAR16 * GetOptionsFile()
1082