Contents of /trunk/grubby/grubby.c
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Mon Oct 21 13:19:07 2013 UTC (10 years, 11 months ago) by niro
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Mon Oct 21 13:19:07 2013 UTC (10 years, 11 months ago) by niro
File MIME type: text/plain
File size: 119348 byte(s)
Add logging when things fail.
1 | /* |
2 | * grubby.c |
3 | * |
4 | * Copyright (C) 2001-2008 Red Hat, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License as published by |
9 | * the Free Software Foundation; either version 2 of the License, or |
10 | * (at your option) any later version. |
11 | * |
12 | * This program is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * GNU General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU General Public License |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
19 | */ |
20 | |
21 | #ifndef _GNU_SOURCE |
22 | #define _GNU_SOURCE |
23 | #endif |
24 | #include <ctype.h> |
25 | #include <errno.h> |
26 | #include <fcntl.h> |
27 | #include <mntent.h> |
28 | #include <popt.h> |
29 | #include <stdarg.h> |
30 | #include <stdlib.h> |
31 | #include <string.h> |
32 | #include <sys/stat.h> |
33 | #include <unistd.h> |
34 | #include <libgen.h> |
35 | #include <execinfo.h> |
36 | #include <signal.h> |
37 | #include <blkid/blkid.h> |
38 | |
39 | #include "log.h" |
40 | |
41 | #ifndef DEBUG |
42 | #define DEBUG 0 |
43 | #endif |
44 | |
45 | #if DEBUG |
46 | #define dbgPrintf(format, args...) fprintf(stderr, format , ## args) |
47 | #else |
48 | #define dbgPrintf(format, args...) |
49 | #endif |
50 | |
51 | int debug = 0; /* Currently just for template debugging */ |
52 | |
53 | #define _(A) (A) |
54 | |
55 | #define MAX_EXTRA_INITRDS 16 /* code segment checked by --bootloader-probe */ |
56 | #define CODE_SEG_SIZE 128 /* code segment checked by --bootloader-probe */ |
57 | |
58 | #define NOOP_OPCODE 0x90 |
59 | #define JMP_SHORT_OPCODE 0xeb |
60 | |
61 | int isEfi = 0; |
62 | |
63 | char *saved_command_line = NULL; |
64 | |
65 | /* comments get lumped in with indention */ |
66 | struct lineElement { |
67 | char * item; |
68 | char * indent; |
69 | }; |
70 | |
71 | enum lineType_e { |
72 | LT_WHITESPACE = 1 << 0, |
73 | LT_TITLE = 1 << 1, |
74 | LT_KERNEL = 1 << 2, |
75 | LT_INITRD = 1 << 3, |
76 | LT_HYPER = 1 << 4, |
77 | LT_DEFAULT = 1 << 5, |
78 | LT_MBMODULE = 1 << 6, |
79 | LT_ROOT = 1 << 7, |
80 | LT_FALLBACK = 1 << 8, |
81 | LT_KERNELARGS = 1 << 9, |
82 | LT_BOOT = 1 << 10, |
83 | LT_BOOTROOT = 1 << 11, |
84 | LT_LBA = 1 << 12, |
85 | LT_OTHER = 1 << 13, |
86 | LT_GENERIC = 1 << 14, |
87 | LT_ECHO = 1 << 16, |
88 | LT_MENUENTRY = 1 << 17, |
89 | LT_ENTRY_END = 1 << 18, |
90 | LT_SET_VARIABLE = 1 << 19, |
91 | LT_KERNEL_EFI = 1 << 20, |
92 | LT_INITRD_EFI = 1 << 21, |
93 | LT_UNKNOWN = 1 << 22, |
94 | }; |
95 | |
96 | struct singleLine { |
97 | char * indent; |
98 | int numElements; |
99 | struct lineElement * elements; |
100 | struct singleLine * next; |
101 | enum lineType_e type; |
102 | }; |
103 | |
104 | struct singleEntry { |
105 | struct singleLine * lines; |
106 | int skip; |
107 | int multiboot; |
108 | struct singleEntry * next; |
109 | }; |
110 | |
111 | #define GRUBBY_BADIMAGE_OKAY (1 << 0) |
112 | |
113 | #define GRUB_CONFIG_NO_DEFAULT (1 << 0) /* don't write out default=0 */ |
114 | |
115 | /* These defines are (only) used in addNewKernel() */ |
116 | #define NEED_KERNEL (1 << 0) |
117 | #define NEED_INITRD (1 << 1) |
118 | #define NEED_TITLE (1 << 2) |
119 | #define NEED_ARGS (1 << 3) |
120 | #define NEED_MB (1 << 4) |
121 | #define NEED_END (1 << 5) |
122 | |
123 | #define MAIN_DEFAULT (1 << 0) |
124 | #define DEFAULT_SAVED -2 |
125 | #define DEFAULT_SAVED_GRUB2 -3 |
126 | |
127 | struct keywordTypes { |
128 | char * key; |
129 | enum lineType_e type; |
130 | char nextChar; |
131 | char separatorChar; |
132 | }; |
133 | |
134 | struct configFileInfo; |
135 | |
136 | typedef const char *(*findConfigFunc)(struct configFileInfo *); |
137 | typedef const int (*writeLineFunc)(struct configFileInfo *, |
138 | struct singleLine *line); |
139 | |
140 | struct configFileInfo { |
141 | char * defaultConfig; |
142 | findConfigFunc findConfig; |
143 | writeLineFunc writeLine; |
144 | struct keywordTypes * keywords; |
145 | int caseInsensitive; |
146 | int defaultIsIndex; |
147 | int defaultIsVariable; |
148 | int defaultSupportSaved; |
149 | enum lineType_e entryStart; |
150 | enum lineType_e entryEnd; |
151 | int needsBootPrefix; |
152 | int argsInQuotes; |
153 | int maxTitleLength; |
154 | int titleBracketed; |
155 | int titlePosition; |
156 | int mbHyperFirst; |
157 | int mbInitRdIsModule; |
158 | int mbConcatArgs; |
159 | int mbAllowExtraInitRds; |
160 | }; |
161 | |
162 | struct keywordTypes grubKeywords[] = { |
163 | { "title", LT_TITLE, ' ' }, |
164 | { "root", LT_BOOTROOT, ' ' }, |
165 | { "default", LT_DEFAULT, ' ' }, |
166 | { "fallback", LT_FALLBACK, ' ' }, |
167 | { "kernel", LT_KERNEL, ' ' }, |
168 | { "initrd", LT_INITRD, ' ', ' ' }, |
169 | { "module", LT_MBMODULE, ' ' }, |
170 | { "kernel", LT_HYPER, ' ' }, |
171 | { NULL, 0, 0 }, |
172 | }; |
173 | |
174 | const char *grubFindConfig(struct configFileInfo *cfi) { |
175 | static const char *configFiles[] = { |
176 | "/boot/grub/grub.conf", |
177 | "/boot/grub/menu.lst", |
178 | "/etc/grub.conf", |
179 | NULL |
180 | }; |
181 | static int i = -1; |
182 | |
183 | if (i == -1) { |
184 | for (i = 0; configFiles[i] != NULL; i++) { |
185 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
186 | if (!access(configFiles[i], R_OK)) { |
187 | dbgPrintf("found\n"); |
188 | return configFiles[i]; |
189 | } |
190 | dbgPrintf("not found\n"); |
191 | } |
192 | } |
193 | return configFiles[i]; |
194 | } |
195 | |
196 | struct configFileInfo grubConfigType = { |
197 | .findConfig = grubFindConfig, |
198 | .keywords = grubKeywords, |
199 | .defaultIsIndex = 1, |
200 | .defaultSupportSaved = 1, |
201 | .entryStart = LT_TITLE, |
202 | .needsBootPrefix = 1, |
203 | .mbHyperFirst = 1, |
204 | .mbInitRdIsModule = 1, |
205 | .mbAllowExtraInitRds = 1, |
206 | }; |
207 | |
208 | struct keywordTypes grub2Keywords[] = { |
209 | { "menuentry", LT_MENUENTRY, ' ' }, |
210 | { "}", LT_ENTRY_END, ' ' }, |
211 | { "echo", LT_ECHO, ' ' }, |
212 | { "set", LT_SET_VARIABLE,' ', '=' }, |
213 | { "root", LT_BOOTROOT, ' ' }, |
214 | { "default", LT_DEFAULT, ' ' }, |
215 | { "fallback", LT_FALLBACK, ' ' }, |
216 | { "linux", LT_KERNEL, ' ' }, |
217 | { "linuxefi", LT_KERNEL_EFI, ' ' }, |
218 | { "initrd", LT_INITRD, ' ', ' ' }, |
219 | { "initrdefi", LT_INITRD_EFI, ' ', ' ' }, |
220 | { "module", LT_MBMODULE, ' ' }, |
221 | { "kernel", LT_HYPER, ' ' }, |
222 | { NULL, 0, 0 }, |
223 | }; |
224 | |
225 | const char *grub2FindConfig(struct configFileInfo *cfi) { |
226 | static const char *configFiles[] = { |
227 | "/boot/grub/grub-efi.cfg", |
228 | "/boot/grub/grub.cfg", |
229 | NULL |
230 | }; |
231 | static int i = -1; |
232 | static const char *grub_cfg = "/boot/grub/grub.cfg"; |
233 | |
234 | if (i == -1) { |
235 | for (i = 0; configFiles[i] != NULL; i++) { |
236 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
237 | if (!access(configFiles[i], R_OK)) { |
238 | dbgPrintf("found\n"); |
239 | return configFiles[i]; |
240 | } |
241 | } |
242 | } |
243 | |
244 | /* Ubuntu renames grub2 to grub, so check for the grub.d directory |
245 | * that isn't in grub1, and if it exists, return the config file path |
246 | * that they use. */ |
247 | if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) { |
248 | dbgPrintf("found\n"); |
249 | return grub_cfg; |
250 | } |
251 | |
252 | dbgPrintf("not found\n"); |
253 | return configFiles[i]; |
254 | } |
255 | |
256 | int sizeOfSingleLine(struct singleLine * line) { |
257 | int count = 0; |
258 | |
259 | for (int i = 0; i < line->numElements; i++) { |
260 | int indentSize = 0; |
261 | |
262 | count = count + strlen(line->elements[i].item); |
263 | |
264 | indentSize = strlen(line->elements[i].indent); |
265 | if (indentSize > 0) |
266 | count = count + indentSize; |
267 | else |
268 | /* be extra safe and add room for whitespaces */ |
269 | count = count + 1; |
270 | } |
271 | |
272 | /* room for trailing terminator */ |
273 | count = count + 1; |
274 | |
275 | return count; |
276 | } |
277 | |
278 | static int isquote(char q) |
279 | { |
280 | if (q == '\'' || q == '\"') |
281 | return 1; |
282 | return 0; |
283 | } |
284 | |
285 | static int iskernel(enum lineType_e type) { |
286 | return (type == LT_KERNEL || type == LT_KERNEL_EFI); |
287 | } |
288 | |
289 | static int isinitrd(enum lineType_e type) { |
290 | return (type == LT_INITRD || type == LT_INITRD_EFI); |
291 | } |
292 | |
293 | char *grub2ExtractTitle(struct singleLine * line) { |
294 | char * current; |
295 | char * current_indent; |
296 | int current_len; |
297 | int current_indent_len; |
298 | int i; |
299 | |
300 | /* bail out if line does not start with menuentry */ |
301 | if (strcmp(line->elements[0].item, "menuentry")) |
302 | return NULL; |
303 | |
304 | i = 1; |
305 | current = line->elements[i].item; |
306 | current_len = strlen(current); |
307 | |
308 | /* if second word is quoted, strip the quotes and return single word */ |
309 | if (isquote(*current) && isquote(current[current_len - 1])) { |
310 | char *tmp; |
311 | |
312 | tmp = strdup(current); |
313 | *(tmp + current_len - 1) = '\0'; |
314 | return ++tmp; |
315 | } |
316 | |
317 | /* if no quotes, return second word verbatim */ |
318 | if (!isquote(*current)) |
319 | return current; |
320 | |
321 | /* second element start with a quote, so we have to find the element |
322 | * whose last character is also quote (assuming it's the closing one) */ |
323 | int resultMaxSize; |
324 | char * result; |
325 | |
326 | resultMaxSize = sizeOfSingleLine(line); |
327 | result = malloc(resultMaxSize); |
328 | snprintf(result, resultMaxSize, "%s", ++current); |
329 | |
330 | i++; |
331 | for (; i < line->numElements; ++i) { |
332 | current = line->elements[i].item; |
333 | current_len = strlen(current); |
334 | current_indent = line->elements[i].indent; |
335 | current_indent_len = strlen(current_indent); |
336 | |
337 | strncat(result, current_indent, current_indent_len); |
338 | if (!isquote(current[current_len-1])) { |
339 | strncat(result, current, current_len); |
340 | } else { |
341 | strncat(result, current, current_len - 1); |
342 | break; |
343 | } |
344 | } |
345 | return result; |
346 | } |
347 | |
348 | struct configFileInfo grub2ConfigType = { |
349 | .findConfig = grub2FindConfig, |
350 | .keywords = grub2Keywords, |
351 | .defaultIsIndex = 1, |
352 | .defaultSupportSaved = 1, |
353 | .defaultIsVariable = 1, |
354 | .entryStart = LT_MENUENTRY, |
355 | .entryEnd = LT_ENTRY_END, |
356 | .titlePosition = 1, |
357 | .needsBootPrefix = 1, |
358 | .mbHyperFirst = 1, |
359 | .mbInitRdIsModule = 1, |
360 | .mbAllowExtraInitRds = 1, |
361 | }; |
362 | |
363 | struct keywordTypes yabootKeywords[] = { |
364 | { "label", LT_TITLE, '=' }, |
365 | { "root", LT_ROOT, '=' }, |
366 | { "default", LT_DEFAULT, '=' }, |
367 | { "image", LT_KERNEL, '=' }, |
368 | { "bsd", LT_GENERIC, '=' }, |
369 | { "macos", LT_GENERIC, '=' }, |
370 | { "macosx", LT_GENERIC, '=' }, |
371 | { "magicboot", LT_GENERIC, '=' }, |
372 | { "darwin", LT_GENERIC, '=' }, |
373 | { "timeout", LT_GENERIC, '=' }, |
374 | { "install", LT_GENERIC, '=' }, |
375 | { "fstype", LT_GENERIC, '=' }, |
376 | { "hfstype", LT_GENERIC, '=' }, |
377 | { "delay", LT_GENERIC, '=' }, |
378 | { "defaultos", LT_GENERIC, '=' }, |
379 | { "init-message", LT_GENERIC, '=' }, |
380 | { "enablecdboot", LT_GENERIC, ' ' }, |
381 | { "enableofboot", LT_GENERIC, ' ' }, |
382 | { "enablenetboot", LT_GENERIC, ' ' }, |
383 | { "nonvram", LT_GENERIC, ' ' }, |
384 | { "hide", LT_GENERIC, ' ' }, |
385 | { "protect", LT_GENERIC, ' ' }, |
386 | { "nobless", LT_GENERIC, ' ' }, |
387 | { "nonvram", LT_GENERIC, ' ' }, |
388 | { "brokenosx", LT_GENERIC, ' ' }, |
389 | { "usemount", LT_GENERIC, ' ' }, |
390 | { "mntpoint", LT_GENERIC, '=' }, |
391 | { "partition", LT_GENERIC, '=' }, |
392 | { "device", LT_GENERIC, '=' }, |
393 | { "fstype", LT_GENERIC, '=' }, |
394 | { "initrd", LT_INITRD, '=', ';' }, |
395 | { "append", LT_KERNELARGS, '=' }, |
396 | { "boot", LT_BOOT, '=' }, |
397 | { "lba", LT_LBA, ' ' }, |
398 | { NULL, 0, 0 }, |
399 | }; |
400 | |
401 | struct keywordTypes liloKeywords[] = { |
402 | { "label", LT_TITLE, '=' }, |
403 | { "root", LT_ROOT, '=' }, |
404 | { "default", LT_DEFAULT, '=' }, |
405 | { "image", LT_KERNEL, '=' }, |
406 | { "other", LT_OTHER, '=' }, |
407 | { "initrd", LT_INITRD, '=' }, |
408 | { "append", LT_KERNELARGS, '=' }, |
409 | { "boot", LT_BOOT, '=' }, |
410 | { "lba", LT_LBA, ' ' }, |
411 | { NULL, 0, 0 }, |
412 | }; |
413 | |
414 | struct keywordTypes eliloKeywords[] = { |
415 | { "label", LT_TITLE, '=' }, |
416 | { "root", LT_ROOT, '=' }, |
417 | { "default", LT_DEFAULT, '=' }, |
418 | { "image", LT_KERNEL, '=' }, |
419 | { "initrd", LT_INITRD, '=' }, |
420 | { "append", LT_KERNELARGS, '=' }, |
421 | { "vmm", LT_HYPER, '=' }, |
422 | { NULL, 0, 0 }, |
423 | }; |
424 | |
425 | struct keywordTypes siloKeywords[] = { |
426 | { "label", LT_TITLE, '=' }, |
427 | { "root", LT_ROOT, '=' }, |
428 | { "default", LT_DEFAULT, '=' }, |
429 | { "image", LT_KERNEL, '=' }, |
430 | { "other", LT_OTHER, '=' }, |
431 | { "initrd", LT_INITRD, '=' }, |
432 | { "append", LT_KERNELARGS, '=' }, |
433 | { "boot", LT_BOOT, '=' }, |
434 | { NULL, 0, 0 }, |
435 | }; |
436 | |
437 | struct keywordTypes ziplKeywords[] = { |
438 | { "target", LT_BOOTROOT, '=' }, |
439 | { "image", LT_KERNEL, '=' }, |
440 | { "ramdisk", LT_INITRD, '=' }, |
441 | { "parameters", LT_KERNELARGS, '=' }, |
442 | { "default", LT_DEFAULT, '=' }, |
443 | { NULL, 0, 0 }, |
444 | }; |
445 | |
446 | struct keywordTypes extlinuxKeywords[] = { |
447 | { "label", LT_TITLE, ' ' }, |
448 | { "root", LT_ROOT, ' ' }, |
449 | { "default", LT_DEFAULT, ' ' }, |
450 | { "kernel", LT_KERNEL, ' ' }, |
451 | { "initrd", LT_INITRD, ' ', ',' }, |
452 | { "append", LT_KERNELARGS, ' ' }, |
453 | { "prompt", LT_UNKNOWN, ' ' }, |
454 | { NULL, 0, 0 }, |
455 | }; |
456 | int useextlinuxmenu; |
457 | struct configFileInfo eliloConfigType = { |
458 | .defaultConfig = "/boot/efi/EFI/redhat/elilo.conf", |
459 | .keywords = eliloKeywords, |
460 | .entryStart = LT_KERNEL, |
461 | .needsBootPrefix = 1, |
462 | .argsInQuotes = 1, |
463 | .mbConcatArgs = 1, |
464 | }; |
465 | |
466 | struct configFileInfo liloConfigType = { |
467 | .defaultConfig = "/etc/lilo.conf", |
468 | .keywords = liloKeywords, |
469 | .entryStart = LT_KERNEL, |
470 | .argsInQuotes = 1, |
471 | .maxTitleLength = 15, |
472 | }; |
473 | |
474 | struct configFileInfo yabootConfigType = { |
475 | .defaultConfig = "/etc/yaboot.conf", |
476 | .keywords = yabootKeywords, |
477 | .entryStart = LT_KERNEL, |
478 | .needsBootPrefix = 1, |
479 | .argsInQuotes = 1, |
480 | .maxTitleLength = 15, |
481 | .mbAllowExtraInitRds = 1, |
482 | }; |
483 | |
484 | struct configFileInfo siloConfigType = { |
485 | .defaultConfig = "/etc/silo.conf", |
486 | .keywords = siloKeywords, |
487 | .entryStart = LT_KERNEL, |
488 | .needsBootPrefix = 1, |
489 | .argsInQuotes = 1, |
490 | .maxTitleLength = 15, |
491 | }; |
492 | |
493 | struct configFileInfo ziplConfigType = { |
494 | .defaultConfig = "/etc/zipl.conf", |
495 | .keywords = ziplKeywords, |
496 | .entryStart = LT_TITLE, |
497 | .argsInQuotes = 1, |
498 | .titleBracketed = 1, |
499 | }; |
500 | |
501 | struct configFileInfo extlinuxConfigType = { |
502 | .defaultConfig = "/boot/extlinux/extlinux.conf", |
503 | .keywords = extlinuxKeywords, |
504 | .caseInsensitive = 1, |
505 | .entryStart = LT_TITLE, |
506 | .needsBootPrefix = 1, |
507 | .maxTitleLength = 255, |
508 | .mbAllowExtraInitRds = 1, |
509 | }; |
510 | |
511 | struct grubConfig { |
512 | struct singleLine * theLines; |
513 | struct singleEntry * entries; |
514 | char * primaryIndent; |
515 | char * secondaryIndent; |
516 | int defaultImage; /* -1 if none specified -- this value is |
517 | * written out, overriding original */ |
518 | int fallbackImage; /* just like defaultImage */ |
519 | int flags; |
520 | struct configFileInfo * cfi; |
521 | }; |
522 | |
523 | blkid_cache blkid; |
524 | |
525 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); |
526 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, |
527 | const char * path, const char * prefix, |
528 | int * index); |
529 | static int readFile(int fd, char ** bufPtr); |
530 | static void lineInit(struct singleLine * line); |
531 | struct singleLine * lineDup(struct singleLine * line); |
532 | static void lineFree(struct singleLine * line); |
533 | static int lineWrite(FILE * out, struct singleLine * line, |
534 | struct configFileInfo * cfi); |
535 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
536 | struct configFileInfo * cfi); |
537 | static char * getRootSpecifier(char * str); |
538 | static void requote(struct singleLine *line, struct configFileInfo * cfi); |
539 | static void insertElement(struct singleLine * line, |
540 | const char * item, int insertHere, |
541 | struct configFileInfo * cfi); |
542 | static void removeElement(struct singleLine * line, int removeHere); |
543 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
544 | struct configFileInfo * cfi); |
545 | static enum lineType_e getTypeByKeyword(char * keyword, |
546 | struct configFileInfo * cfi); |
547 | static struct singleLine * getLineByType(enum lineType_e type, |
548 | struct singleLine * line); |
549 | static int checkForExtLinux(struct grubConfig * config); |
550 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
551 | struct singleLine * tmplLine, |
552 | struct singleLine * prevLine, |
553 | const char * val, |
554 | struct configFileInfo * cfi); |
555 | struct singleLine * addLine(struct singleEntry * entry, |
556 | struct configFileInfo * cfi, |
557 | enum lineType_e type, char * defaultIndent, |
558 | const char * val); |
559 | |
560 | static char * sdupprintf(const char *format, ...) |
561 | #ifdef __GNUC__ |
562 | __attribute__ ((format (printf, 1, 2))); |
563 | #else |
564 | ; |
565 | #endif |
566 | |
567 | static char * sdupprintf(const char *format, ...) { |
568 | char *buf = NULL; |
569 | char c; |
570 | va_list args; |
571 | size_t size = 0; |
572 | va_start(args, format); |
573 | |
574 | /* XXX requires C99 vsnprintf behavior */ |
575 | size = vsnprintf(&c, 1, format, args) + 1; |
576 | if (size == -1) { |
577 | printf("ERROR: vsnprintf behavior is not C99\n"); |
578 | abort(); |
579 | } |
580 | |
581 | va_end(args); |
582 | va_start(args, format); |
583 | |
584 | buf = malloc(size); |
585 | if (buf == NULL) |
586 | return NULL; |
587 | vsnprintf(buf, size, format, args); |
588 | va_end (args); |
589 | |
590 | return buf; |
591 | } |
592 | |
593 | static enum lineType_e preferredLineType(enum lineType_e type, |
594 | struct configFileInfo *cfi) { |
595 | if (isEfi && cfi == &grub2ConfigType) { |
596 | switch (type) { |
597 | case LT_KERNEL: |
598 | return LT_KERNEL_EFI; |
599 | case LT_INITRD: |
600 | return LT_INITRD_EFI; |
601 | default: |
602 | return type; |
603 | } |
604 | } |
605 | return type; |
606 | } |
607 | |
608 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
609 | struct configFileInfo * cfi) { |
610 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
611 | if (kw->type == type) |
612 | return kw; |
613 | } |
614 | return NULL; |
615 | } |
616 | |
617 | static char *getKeyByType(enum lineType_e type, struct configFileInfo * cfi) { |
618 | struct keywordTypes *kt = getKeywordByType(type, cfi); |
619 | if (kt) |
620 | return kt->key; |
621 | return "unknown"; |
622 | } |
623 | |
624 | static char * getpathbyspec(char *device) { |
625 | if (!blkid) |
626 | blkid_get_cache(&blkid, NULL); |
627 | |
628 | return blkid_get_devname(blkid, device, NULL); |
629 | } |
630 | |
631 | static char * getuuidbydev(char *device) { |
632 | if (!blkid) |
633 | blkid_get_cache(&blkid, NULL); |
634 | |
635 | return blkid_get_tag_value(blkid, "UUID", device); |
636 | } |
637 | |
638 | static enum lineType_e getTypeByKeyword(char * keyword, |
639 | struct configFileInfo * cfi) { |
640 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
641 | if (cfi->caseInsensitive) { |
642 | if (!strcasecmp(keyword, kw->key)) |
643 | return kw->type; |
644 | } else { |
645 | if (!strcmp(keyword, kw->key)) |
646 | return kw->type; |
647 | } |
648 | } |
649 | return LT_UNKNOWN; |
650 | } |
651 | |
652 | static struct singleLine * getLineByType(enum lineType_e type, |
653 | struct singleLine * line) { |
654 | dbgPrintf("getLineByType(%d): ", type); |
655 | for (; line; line = line->next) { |
656 | dbgPrintf("%d:%s ", line->type, |
657 | line->numElements ? line->elements[0].item : "(empty)"); |
658 | if (line->type & type) break; |
659 | } |
660 | dbgPrintf(line ? "\n" : " (failed)\n"); |
661 | return line; |
662 | } |
663 | |
664 | static int isBracketedTitle(struct singleLine * line) { |
665 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
666 | int len = strlen(line->elements[0].item); |
667 | if (*(line->elements[0].item + len - 1) == ']') { |
668 | /* FIXME: this is a hack... */ |
669 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
670 | return 1; |
671 | } |
672 | } |
673 | } |
674 | return 0; |
675 | } |
676 | |
677 | static int isEntryStart(struct singleLine * line, |
678 | struct configFileInfo * cfi) { |
679 | return line->type == cfi->entryStart || line->type == LT_OTHER || |
680 | (cfi->titleBracketed && isBracketedTitle(line)); |
681 | } |
682 | |
683 | /* extract the title from within brackets (for zipl) */ |
684 | static char * extractTitle(struct singleLine * line) { |
685 | /* bracketed title... let's extract it (leaks a byte) */ |
686 | char * title; |
687 | title = strdup(line->elements[0].item); |
688 | title++; |
689 | *(title + strlen(title) - 1) = '\0'; |
690 | return title; |
691 | } |
692 | |
693 | static int readFile(int fd, char ** bufPtr) { |
694 | int alloced = 0, size = 0, i = 0; |
695 | char * buf = NULL; |
696 | |
697 | do { |
698 | size += i; |
699 | if ((size + 1024) > alloced) { |
700 | alloced += 4096; |
701 | buf = realloc(buf, alloced + 1); |
702 | } |
703 | } while ((i = read(fd, buf + size, 1024)) > 0); |
704 | |
705 | if (i < 0) { |
706 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); |
707 | free(buf); |
708 | return 1; |
709 | } |
710 | |
711 | buf = realloc(buf, size + 2); |
712 | if (size == 0) |
713 | buf[size++] = '\n'; |
714 | else |
715 | if (buf[size - 1] != '\n') |
716 | buf[size++] = '\n'; |
717 | buf[size] = '\0'; |
718 | |
719 | *bufPtr = buf; |
720 | |
721 | return 0; |
722 | } |
723 | |
724 | static void lineInit(struct singleLine * line) { |
725 | line->indent = NULL; |
726 | line->elements = NULL; |
727 | line->numElements = 0; |
728 | line->next = NULL; |
729 | } |
730 | |
731 | struct singleLine * lineDup(struct singleLine * line) { |
732 | struct singleLine * newLine = malloc(sizeof(*newLine)); |
733 | |
734 | newLine->indent = strdup(line->indent); |
735 | newLine->next = NULL; |
736 | newLine->type = line->type; |
737 | newLine->numElements = line->numElements; |
738 | newLine->elements = malloc(sizeof(*newLine->elements) * |
739 | newLine->numElements); |
740 | |
741 | for (int i = 0; i < newLine->numElements; i++) { |
742 | newLine->elements[i].indent = strdup(line->elements[i].indent); |
743 | newLine->elements[i].item = strdup(line->elements[i].item); |
744 | } |
745 | |
746 | return newLine; |
747 | } |
748 | |
749 | static void lineFree(struct singleLine * line) { |
750 | if (line->indent) free(line->indent); |
751 | |
752 | for (int i = 0; i < line->numElements; i++) { |
753 | free(line->elements[i].item); |
754 | free(line->elements[i].indent); |
755 | } |
756 | |
757 | if (line->elements) free(line->elements); |
758 | lineInit(line); |
759 | } |
760 | |
761 | static int lineWrite(FILE * out, struct singleLine * line, |
762 | struct configFileInfo * cfi) { |
763 | if (fprintf(out, "%s", line->indent) == -1) return -1; |
764 | |
765 | for (int i = 0; i < line->numElements; i++) { |
766 | /* Need to handle this, because we strip the quotes from |
767 | * menuentry when read it. */ |
768 | if (line->type == LT_MENUENTRY && i == 1) { |
769 | if(!isquote(*line->elements[i].item)) |
770 | fprintf(out, "\'%s\'", line->elements[i].item); |
771 | else |
772 | fprintf(out, "%s", line->elements[i].item); |
773 | fprintf(out, "%s", line->elements[i].indent); |
774 | |
775 | continue; |
776 | } |
777 | |
778 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
779 | if (fputc('"', out) == EOF) return -1; |
780 | |
781 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; |
782 | if (i < line->numElements - 1) |
783 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; |
784 | } |
785 | |
786 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
787 | if (fputc('"', out) == EOF) return -1; |
788 | |
789 | if (fprintf(out, "\n") == -1) return -1; |
790 | |
791 | return 0; |
792 | } |
793 | |
794 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
795 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
796 | struct configFileInfo * cfi) { |
797 | char * end; |
798 | char * start = *bufPtr; |
799 | char * chptr; |
800 | int elementsAlloced = 0; |
801 | struct lineElement * element; |
802 | int first = 1; |
803 | |
804 | lineFree(line); |
805 | |
806 | end = strchr(start, '\n'); |
807 | *end = '\0'; |
808 | *bufPtr = end + 1; |
809 | |
810 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
811 | |
812 | line->indent = strndup(start, chptr - start); |
813 | start = chptr; |
814 | |
815 | while (start < end) { |
816 | /* we know !isspace(*start) */ |
817 | |
818 | if (elementsAlloced == line->numElements) { |
819 | elementsAlloced += 5; |
820 | line->elements = realloc(line->elements, |
821 | sizeof(*line->elements) * elementsAlloced); |
822 | } |
823 | |
824 | element = line->elements + line->numElements; |
825 | |
826 | chptr = start; |
827 | while (*chptr && !isspace(*chptr)) { |
828 | if (first && *chptr == '=') break; |
829 | chptr++; |
830 | } |
831 | element->item = strndup(start, chptr - start); |
832 | start = chptr; |
833 | |
834 | /* lilo actually accepts the pathological case of append = " foo " */ |
835 | if (*start == '=') |
836 | chptr = start + 1; |
837 | else |
838 | chptr = start; |
839 | |
840 | do { |
841 | for (; *chptr && isspace(*chptr); chptr++); |
842 | if (*chptr == '=') |
843 | chptr = chptr + 1; |
844 | } while (isspace(*chptr)); |
845 | |
846 | element->indent = strndup(start, chptr - start); |
847 | start = chptr; |
848 | |
849 | line->numElements++; |
850 | first = 0; |
851 | } |
852 | |
853 | if (!line->numElements) |
854 | line->type = LT_WHITESPACE; |
855 | else { |
856 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
857 | if (line->type == LT_UNKNOWN) { |
858 | /* zipl does [title] instead of something reasonable like all |
859 | * the other boot loaders. kind of ugly */ |
860 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
861 | line->type = LT_TITLE; |
862 | } |
863 | |
864 | /* this is awkward, but we need to be able to handle keywords |
865 | that begin with a # (specifically for #boot in grub.conf), |
866 | but still make comments lines with no elements (everything |
867 | stored in the indent */ |
868 | if (*line->elements[0].item == '#') { |
869 | char * fullLine; |
870 | int len; |
871 | |
872 | len = strlen(line->indent); |
873 | for (int i = 0; i < line->numElements; i++) |
874 | len += strlen(line->elements[i].item) + |
875 | strlen(line->elements[i].indent); |
876 | |
877 | fullLine = malloc(len + 1); |
878 | strcpy(fullLine, line->indent); |
879 | free(line->indent); |
880 | line->indent = fullLine; |
881 | |
882 | for (int i = 0; i < line->numElements; i++) { |
883 | strcat(fullLine, line->elements[i].item); |
884 | strcat(fullLine, line->elements[i].indent); |
885 | free(line->elements[i].item); |
886 | free(line->elements[i].indent); |
887 | } |
888 | |
889 | line->type = LT_WHITESPACE; |
890 | line->numElements = 0; |
891 | } |
892 | } else { |
893 | struct keywordTypes *kw; |
894 | |
895 | kw = getKeywordByType(line->type, cfi); |
896 | |
897 | /* space isn't the only separator, we need to split |
898 | * elements up more |
899 | */ |
900 | if (!isspace(kw->separatorChar)) { |
901 | char indent[2] = ""; |
902 | indent[0] = kw->separatorChar; |
903 | for (int i = 1; i < line->numElements; i++) { |
904 | char *p; |
905 | int numNewElements; |
906 | |
907 | numNewElements = 0; |
908 | p = line->elements[i].item; |
909 | while (*p != '\0') { |
910 | if (*p == kw->separatorChar) |
911 | numNewElements++; |
912 | p++; |
913 | } |
914 | if (line->numElements + numNewElements >= elementsAlloced) { |
915 | elementsAlloced += numNewElements + 5; |
916 | line->elements = realloc(line->elements, |
917 | sizeof(*line->elements) * elementsAlloced); |
918 | } |
919 | |
920 | for (int j = line->numElements; j > i; j--) { |
921 | line->elements[j + numNewElements] = line->elements[j]; |
922 | } |
923 | line->numElements += numNewElements; |
924 | |
925 | p = line->elements[i].item; |
926 | while (*p != '\0') { |
927 | |
928 | while (*p != kw->separatorChar && *p != '\0') p++; |
929 | if (*p == '\0') { |
930 | break; |
931 | } |
932 | |
933 | line->elements[i + 1].indent = line->elements[i].indent; |
934 | line->elements[i].indent = strdup(indent); |
935 | *p++ = '\0'; |
936 | i++; |
937 | line->elements[i].item = strdup(p); |
938 | } |
939 | } |
940 | } |
941 | } |
942 | } |
943 | |
944 | return 0; |
945 | } |
946 | |
947 | static struct grubConfig * readConfig(const char * inName, |
948 | struct configFileInfo * cfi) { |
949 | int in; |
950 | char * incoming = NULL, * head; |
951 | int rc; |
952 | int sawEntry = 0; |
953 | int movedLine = 0; |
954 | struct grubConfig * cfg; |
955 | struct singleLine * last = NULL, * line, * defaultLine = NULL; |
956 | char * end; |
957 | struct singleEntry * entry = NULL; |
958 | int len; |
959 | char * buf; |
960 | |
961 | if (!strcmp(inName, "-")) { |
962 | in = 0; |
963 | } else { |
964 | if ((in = open(inName, O_RDONLY)) < 0) { |
965 | fprintf(stderr, _("error opening %s for read: %s\n"), |
966 | inName, strerror(errno)); |
967 | return NULL; |
968 | } |
969 | } |
970 | |
971 | rc = readFile(in, &incoming); |
972 | close(in); |
973 | if (rc) return NULL; |
974 | |
975 | head = incoming; |
976 | cfg = malloc(sizeof(*cfg)); |
977 | cfg->primaryIndent = strdup(""); |
978 | cfg->secondaryIndent = strdup("\t"); |
979 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
980 | cfg->cfi = cfi; |
981 | cfg->theLines = NULL; |
982 | cfg->entries = NULL; |
983 | cfg->fallbackImage = 0; |
984 | |
985 | /* copy everything we have */ |
986 | while (*head) { |
987 | line = malloc(sizeof(*line)); |
988 | lineInit(line); |
989 | |
990 | if (getNextLine(&head, line, cfi)) { |
991 | free(line); |
992 | /* XXX memory leak of everything in cfg */ |
993 | return NULL; |
994 | } |
995 | |
996 | if (!sawEntry && line->numElements) { |
997 | free(cfg->primaryIndent); |
998 | cfg->primaryIndent = strdup(line->indent); |
999 | } else if (line->numElements) { |
1000 | free(cfg->secondaryIndent); |
1001 | cfg->secondaryIndent = strdup(line->indent); |
1002 | } |
1003 | |
1004 | if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) { |
1005 | sawEntry = 1; |
1006 | if (!entry) { |
1007 | cfg->entries = malloc(sizeof(*entry)); |
1008 | entry = cfg->entries; |
1009 | } else { |
1010 | entry->next = malloc(sizeof(*entry)); |
1011 | entry = entry->next; |
1012 | } |
1013 | |
1014 | entry->skip = 0; |
1015 | entry->multiboot = 0; |
1016 | entry->lines = NULL; |
1017 | entry->next = NULL; |
1018 | } |
1019 | |
1020 | if (line->type == LT_SET_VARIABLE) { |
1021 | dbgPrintf("found 'set' command (%d elements): ", line->numElements); |
1022 | dbgPrintf("%s", line->indent); |
1023 | for (int i = 0; i < line->numElements; i++) |
1024 | dbgPrintf("\"%s\"%s", line->elements[i].item, line->elements[i].indent); |
1025 | dbgPrintf("\n"); |
1026 | struct keywordTypes *kwType = getKeywordByType(LT_DEFAULT, cfi); |
1027 | if (kwType && line->numElements == 3 && |
1028 | !strcmp(line->elements[1].item, kwType->key)) { |
1029 | dbgPrintf("Line sets default config\n"); |
1030 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1031 | defaultLine = line; |
1032 | } |
1033 | } else if (line->type == LT_DEFAULT && line->numElements == 2) { |
1034 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1035 | defaultLine = line; |
1036 | |
1037 | } else if (iskernel(line->type)) { |
1038 | /* if by some freak chance this is multiboot and the "module" |
1039 | * lines came earlier in the template, make sure to use LT_HYPER |
1040 | * instead of LT_KERNEL now |
1041 | */ |
1042 | if (entry->multiboot) |
1043 | line->type = LT_HYPER; |
1044 | |
1045 | } else if (line->type == LT_MBMODULE) { |
1046 | /* go back and fix the LT_KERNEL line to indicate LT_HYPER |
1047 | * instead, now that we know this is a multiboot entry. |
1048 | * This only applies to grub, but that's the only place we |
1049 | * should find LT_MBMODULE lines anyway. |
1050 | */ |
1051 | for (struct singleLine *l = entry->lines; l; l = l->next) { |
1052 | if (l->type == LT_HYPER) |
1053 | break; |
1054 | else if (iskernel(l->type)) { |
1055 | l->type = LT_HYPER; |
1056 | break; |
1057 | } |
1058 | } |
1059 | entry->multiboot = 1; |
1060 | |
1061 | } else if (line->type == LT_HYPER) { |
1062 | entry->multiboot = 1; |
1063 | |
1064 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
1065 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); |
1066 | if (*end) cfg->fallbackImage = -1; |
1067 | |
1068 | } else if (line->type == LT_TITLE && line->numElements > 1) { |
1069 | /* make the title a single argument (undoing our parsing) */ |
1070 | len = 0; |
1071 | for (int i = 1; i < line->numElements; i++) { |
1072 | len += strlen(line->elements[i].item); |
1073 | len += strlen(line->elements[i].indent); |
1074 | } |
1075 | buf = malloc(len + 1); |
1076 | *buf = '\0'; |
1077 | |
1078 | for (int i = 1; i < line->numElements; i++) { |
1079 | strcat(buf, line->elements[i].item); |
1080 | free(line->elements[i].item); |
1081 | |
1082 | if ((i + 1) != line->numElements) { |
1083 | strcat(buf, line->elements[i].indent); |
1084 | free(line->elements[i].indent); |
1085 | } |
1086 | } |
1087 | |
1088 | line->elements[1].indent = |
1089 | line->elements[line->numElements - 1].indent; |
1090 | line->elements[1].item = buf; |
1091 | line->numElements = 2; |
1092 | } else if (line->type == LT_MENUENTRY && line->numElements > 3) { |
1093 | /* let --remove-kernel="TITLE=what" work */ |
1094 | len = 0; |
1095 | char *extras; |
1096 | char *title; |
1097 | |
1098 | for (int i = 1; i < line->numElements; i++) { |
1099 | len += strlen(line->elements[i].item); |
1100 | len += strlen(line->elements[i].indent); |
1101 | } |
1102 | buf = malloc(len + 1); |
1103 | *buf = '\0'; |
1104 | |
1105 | /* allocate mem for extra flags. */ |
1106 | extras = malloc(len + 1); |
1107 | *extras = '\0'; |
1108 | |
1109 | /* get title. */ |
1110 | for (int i = 0; i < line->numElements; i++) { |
1111 | if (!strcmp(line->elements[i].item, "menuentry")) |
1112 | continue; |
1113 | if (isquote(*line->elements[i].item)) |
1114 | title = line->elements[i].item + 1; |
1115 | else |
1116 | title = line->elements[i].item; |
1117 | |
1118 | len = strlen(title); |
1119 | if (isquote(title[len-1])) { |
1120 | strncat(buf, title,len-1); |
1121 | break; |
1122 | } else { |
1123 | strcat(buf, title); |
1124 | strcat(buf, line->elements[i].indent); |
1125 | } |
1126 | } |
1127 | |
1128 | /* get extras */ |
1129 | int count = 0; |
1130 | for (int i = 0; i < line->numElements; i++) { |
1131 | if (count >= 2) { |
1132 | strcat(extras, line->elements[i].item); |
1133 | strcat(extras, line->elements[i].indent); |
1134 | } |
1135 | |
1136 | if (!strcmp(line->elements[i].item, "menuentry")) |
1137 | continue; |
1138 | |
1139 | /* count ' or ", there should be two in menuentry line. */ |
1140 | if (isquote(*line->elements[i].item)) |
1141 | count++; |
1142 | |
1143 | len = strlen(line->elements[i].item); |
1144 | |
1145 | if (isquote(line->elements[i].item[len -1])) |
1146 | count++; |
1147 | |
1148 | /* ok, we get the final ' or ", others are extras. */ |
1149 | } |
1150 | line->elements[1].indent = |
1151 | line->elements[line->numElements - 2].indent; |
1152 | line->elements[1].item = buf; |
1153 | line->elements[2].indent = |
1154 | line->elements[line->numElements - 2].indent; |
1155 | line->elements[2].item = extras; |
1156 | line->numElements = 3; |
1157 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
1158 | /* Strip off any " which may be present; they'll be put back |
1159 | on write. This is one of the few (the only?) places that grubby |
1160 | canonicalizes the output */ |
1161 | |
1162 | if (line->numElements >= 2) { |
1163 | int last, len; |
1164 | |
1165 | if (isquote(*line->elements[1].item)) |
1166 | memmove(line->elements[1].item, line->elements[1].item + 1, |
1167 | strlen(line->elements[1].item + 1) + 1); |
1168 | |
1169 | last = line->numElements - 1; |
1170 | len = strlen(line->elements[last].item) - 1; |
1171 | if (isquote(line->elements[last].item[len])) |
1172 | line->elements[last].item[len] = '\0'; |
1173 | } |
1174 | } |
1175 | |
1176 | /* If we find a generic config option which should live at the |
1177 | top of the file, move it there. Old versions of grubby were |
1178 | probably responsible for putting new images in the wrong |
1179 | place in front of it anyway. */ |
1180 | if (sawEntry && line->type == LT_GENERIC) { |
1181 | struct singleLine **l = &cfg->theLines; |
1182 | struct singleLine **last_nonws = &cfg->theLines; |
1183 | while (*l) { |
1184 | if ((*l)->type != LT_WHITESPACE) |
1185 | last_nonws = &((*l)->next); |
1186 | l = &((*l)->next); |
1187 | } |
1188 | line->next = *last_nonws; |
1189 | *last_nonws = line; |
1190 | movedLine = 1; |
1191 | continue; /* without setting 'last' */ |
1192 | } |
1193 | |
1194 | /* If a second line of whitespace happens after a generic option |
1195 | which was moved, drop it. */ |
1196 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { |
1197 | lineFree(line); |
1198 | free(line); |
1199 | movedLine = 0; |
1200 | continue; |
1201 | } |
1202 | movedLine = 0; |
1203 | |
1204 | if (sawEntry) { |
1205 | if (!entry->lines) |
1206 | entry->lines = line; |
1207 | else |
1208 | last->next = line; |
1209 | dbgPrintf("readConfig added %s to %p\n", getKeyByType(line->type, cfi), entry); |
1210 | |
1211 | /* we could have seen this outside of an entry... if so, we |
1212 | * ignore it like any other line we don't grok */ |
1213 | if (line->type == LT_ENTRY_END && sawEntry) |
1214 | sawEntry = 0; |
1215 | } else { |
1216 | if (!cfg->theLines) |
1217 | cfg->theLines = line; |
1218 | else |
1219 | last->next = line; |
1220 | dbgPrintf("readConfig added %s to cfg\n", getKeyByType(line->type, cfi)); |
1221 | } |
1222 | |
1223 | last = line; |
1224 | } |
1225 | |
1226 | free(incoming); |
1227 | |
1228 | dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset"); |
1229 | if (defaultLine) { |
1230 | if (defaultLine->numElements > 2 && |
1231 | cfi->defaultSupportSaved && |
1232 | !strncmp(defaultLine->elements[2].item,"\"${saved_entry}\"", 16)) { |
1233 | cfg->defaultImage = DEFAULT_SAVED_GRUB2; |
1234 | } else if (cfi->defaultIsVariable) { |
1235 | char *value = defaultLine->elements[2].item; |
1236 | while (*value && (*value == '"' || *value == '\'' || |
1237 | *value == ' ' || *value == '\t')) |
1238 | value++; |
1239 | cfg->defaultImage = strtol(value, &end, 10); |
1240 | while (*end && (*end == '"' || *end == '\'' || |
1241 | *end == ' ' || *end == '\t')) |
1242 | end++; |
1243 | if (*end) cfg->defaultImage = -1; |
1244 | } else if (cfi->defaultSupportSaved && |
1245 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { |
1246 | cfg->defaultImage = DEFAULT_SAVED; |
1247 | } else if (cfi->defaultIsIndex) { |
1248 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); |
1249 | if (*end) cfg->defaultImage = -1; |
1250 | } else if (defaultLine->numElements >= 2) { |
1251 | int i = 0; |
1252 | while ((entry = findEntryByIndex(cfg, i))) { |
1253 | for (line = entry->lines; line; line = line->next) |
1254 | if (line->type == LT_TITLE) break; |
1255 | |
1256 | if (!cfi->titleBracketed) { |
1257 | if (line && (line->numElements >= 2) && |
1258 | !strcmp(defaultLine->elements[1].item, |
1259 | line->elements[1].item)) break; |
1260 | } else if (line) { |
1261 | if (!strcmp(defaultLine->elements[1].item, |
1262 | extractTitle(line))) break; |
1263 | } |
1264 | i++; |
1265 | entry = NULL; |
1266 | } |
1267 | |
1268 | if (entry){ |
1269 | cfg->defaultImage = i; |
1270 | }else{ |
1271 | cfg->defaultImage = -1; |
1272 | } |
1273 | } |
1274 | } else { |
1275 | cfg->defaultImage = 0; |
1276 | } |
1277 | |
1278 | return cfg; |
1279 | } |
1280 | |
1281 | static void writeDefault(FILE * out, char * indent, |
1282 | char * separator, struct grubConfig * cfg) { |
1283 | struct singleEntry * entry; |
1284 | struct singleLine * line; |
1285 | int i; |
1286 | |
1287 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; |
1288 | |
1289 | if (cfg->defaultImage == DEFAULT_SAVED) |
1290 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
1291 | else if (cfg->defaultImage == DEFAULT_SAVED_GRUB2) |
1292 | fprintf(out, "%sset default=\"${saved_entry}\"\n", indent); |
1293 | else if (cfg->defaultImage > -1) { |
1294 | if (cfg->cfi->defaultIsIndex) { |
1295 | if (cfg->cfi->defaultIsVariable) { |
1296 | fprintf(out, "%sset default=\"%d\"\n", indent, |
1297 | cfg->defaultImage); |
1298 | } else { |
1299 | fprintf(out, "%sdefault%s%d\n", indent, separator, |
1300 | cfg->defaultImage); |
1301 | } |
1302 | } else { |
1303 | int image = cfg->defaultImage; |
1304 | |
1305 | entry = cfg->entries; |
1306 | while (entry && entry->skip) entry = entry->next; |
1307 | |
1308 | i = 0; |
1309 | while (entry && i < image) { |
1310 | entry = entry->next; |
1311 | |
1312 | while (entry && entry->skip) entry = entry->next; |
1313 | i++; |
1314 | } |
1315 | |
1316 | if (!entry) return; |
1317 | |
1318 | line = getLineByType(LT_TITLE, entry->lines); |
1319 | |
1320 | if (line && line->numElements >= 2) |
1321 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1322 | line->elements[1].item); |
1323 | else if (line && (line->numElements == 1) && |
1324 | cfg->cfi->titleBracketed) { |
1325 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1326 | extractTitle(line)); |
1327 | } |
1328 | } |
1329 | } |
1330 | } |
1331 | |
1332 | static int writeConfig(struct grubConfig * cfg, char * outName, |
1333 | const char * prefix) { |
1334 | FILE * out; |
1335 | struct singleLine * line; |
1336 | struct singleEntry * entry; |
1337 | char * tmpOutName; |
1338 | int needs = MAIN_DEFAULT; |
1339 | struct stat sb; |
1340 | int i; |
1341 | |
1342 | if (!strcmp(outName, "-")) { |
1343 | out = stdout; |
1344 | tmpOutName = NULL; |
1345 | } else { |
1346 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
1347 | char * buf; |
1348 | int len = 256; |
1349 | int rc; |
1350 | |
1351 | /* most likely the symlink is relative, so change our |
1352 | directory to the dir of the symlink */ |
1353 | char *dir = strdupa(outName); |
1354 | rc = chdir(dirname(dir)); |
1355 | do { |
1356 | buf = alloca(len + 1); |
1357 | rc = readlink(basename(outName), buf, len); |
1358 | if (rc == len) len += 256; |
1359 | } while (rc == len); |
1360 | |
1361 | if (rc < 0) { |
1362 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), |
1363 | outName, strerror(errno)); |
1364 | return 1; |
1365 | } |
1366 | |
1367 | outName = buf; |
1368 | outName[rc] = '\0'; |
1369 | } |
1370 | |
1371 | tmpOutName = alloca(strlen(outName) + 2); |
1372 | sprintf(tmpOutName, "%s-", outName); |
1373 | out = fopen(tmpOutName, "w"); |
1374 | if (!out) { |
1375 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, |
1376 | strerror(errno)); |
1377 | return 1; |
1378 | } |
1379 | |
1380 | if (!stat(outName, &sb)) { |
1381 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
1382 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), |
1383 | tmpOutName, strerror(errno)); |
1384 | fclose(out); |
1385 | unlink(tmpOutName); |
1386 | return 1; |
1387 | } |
1388 | } |
1389 | } |
1390 | |
1391 | line = cfg->theLines; |
1392 | struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi); |
1393 | while (line) { |
1394 | if (line->type == LT_SET_VARIABLE && defaultKw && |
1395 | line->numElements == 3 && |
1396 | !strcmp(line->elements[1].item, defaultKw->key)) { |
1397 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1398 | needs &= ~MAIN_DEFAULT; |
1399 | } else if (line->type == LT_DEFAULT) { |
1400 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1401 | needs &= ~MAIN_DEFAULT; |
1402 | } else if (line->type == LT_FALLBACK) { |
1403 | if (cfg->fallbackImage > -1) |
1404 | fprintf(out, "%s%s%s%d\n", line->indent, |
1405 | line->elements[0].item, line->elements[0].indent, |
1406 | cfg->fallbackImage); |
1407 | } else { |
1408 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1409 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1410 | tmpOutName, strerror(errno)); |
1411 | fclose(out); |
1412 | unlink(tmpOutName); |
1413 | return 1; |
1414 | } |
1415 | } |
1416 | |
1417 | line = line->next; |
1418 | } |
1419 | |
1420 | if (needs & MAIN_DEFAULT) { |
1421 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
1422 | needs &= ~MAIN_DEFAULT; |
1423 | } |
1424 | |
1425 | i = 0; |
1426 | while ((entry = findEntryByIndex(cfg, i++))) { |
1427 | if (entry->skip) continue; |
1428 | |
1429 | line = entry->lines; |
1430 | while (line) { |
1431 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1432 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1433 | tmpOutName, strerror(errno)); |
1434 | fclose(out); |
1435 | unlink(tmpOutName); |
1436 | return 1; |
1437 | } |
1438 | line = line->next; |
1439 | } |
1440 | } |
1441 | |
1442 | if (tmpOutName) { |
1443 | if (rename(tmpOutName, outName)) { |
1444 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), |
1445 | tmpOutName, outName, strerror(errno)); |
1446 | unlink(outName); |
1447 | return 1; |
1448 | } |
1449 | } |
1450 | |
1451 | return 0; |
1452 | } |
1453 | |
1454 | static int numEntries(struct grubConfig *cfg) { |
1455 | int i = 0; |
1456 | struct singleEntry * entry; |
1457 | |
1458 | entry = cfg->entries; |
1459 | while (entry) { |
1460 | if (!entry->skip) |
1461 | i++; |
1462 | entry = entry->next; |
1463 | } |
1464 | return i; |
1465 | } |
1466 | |
1467 | static char *findDiskForRoot() |
1468 | { |
1469 | int fd; |
1470 | char buf[65536]; |
1471 | char *devname; |
1472 | char *chptr; |
1473 | int rc; |
1474 | |
1475 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { |
1476 | fprintf(stderr, "grubby: failed to open %s: %s\n", |
1477 | _PATH_MOUNTED, strerror(errno)); |
1478 | return NULL; |
1479 | } |
1480 | |
1481 | rc = read(fd, buf, sizeof(buf) - 1); |
1482 | if (rc <= 0) { |
1483 | fprintf(stderr, "grubby: failed to read %s: %s\n", |
1484 | _PATH_MOUNTED, strerror(errno)); |
1485 | close(fd); |
1486 | return NULL; |
1487 | } |
1488 | close(fd); |
1489 | buf[rc] = '\0'; |
1490 | chptr = buf; |
1491 | |
1492 | char *foundanswer = NULL; |
1493 | |
1494 | while (chptr && chptr != buf+rc) { |
1495 | devname = chptr; |
1496 | |
1497 | /* |
1498 | * The first column of a mtab entry is the device, but if the entry is a |
1499 | * special device it won't start with /, so move on to the next line. |
1500 | */ |
1501 | if (*devname != '/') { |
1502 | chptr = strchr(chptr, '\n'); |
1503 | if (chptr) |
1504 | chptr++; |
1505 | continue; |
1506 | } |
1507 | |
1508 | /* Seek to the next space */ |
1509 | chptr = strchr(chptr, ' '); |
1510 | if (!chptr) { |
1511 | fprintf(stderr, "grubby: error parsing %s: %s\n", |
1512 | _PATH_MOUNTED, strerror(errno)); |
1513 | return NULL; |
1514 | } |
1515 | |
1516 | /* |
1517 | * The second column of a mtab entry is the mount point, we are looking |
1518 | * for '/' obviously. |
1519 | */ |
1520 | if (*(++chptr) == '/' && *(++chptr) == ' ') { |
1521 | /* remember the last / entry in mtab */ |
1522 | foundanswer = devname; |
1523 | } |
1524 | |
1525 | /* Next line */ |
1526 | chptr = strchr(chptr, '\n'); |
1527 | if (chptr) |
1528 | chptr++; |
1529 | } |
1530 | |
1531 | /* Return the last / entry found */ |
1532 | if (foundanswer) { |
1533 | chptr = strchr(foundanswer, ' '); |
1534 | *chptr = '\0'; |
1535 | return strdup(foundanswer); |
1536 | } |
1537 | |
1538 | return NULL; |
1539 | } |
1540 | |
1541 | void printEntry(struct singleEntry * entry, FILE *f) { |
1542 | int i; |
1543 | struct singleLine * line; |
1544 | |
1545 | for (line = entry->lines; line; line = line->next) { |
1546 | log_message(f, "DBG: %s", line->indent); |
1547 | for (i = 0; i < line->numElements; i++) { |
1548 | /* Need to handle this, because we strip the quotes from |
1549 | * menuentry when read it. */ |
1550 | if (line->type == LT_MENUENTRY && i == 1) { |
1551 | if(!isquote(*line->elements[i].item)) |
1552 | log_message(f, "\'%s\'", line->elements[i].item); |
1553 | else |
1554 | log_message(f, "%s", line->elements[i].item); |
1555 | log_message(f, "%s", line->elements[i].indent); |
1556 | |
1557 | continue; |
1558 | } |
1559 | |
1560 | log_message(f, "%s%s", |
1561 | line->elements[i].item, line->elements[i].indent); |
1562 | } |
1563 | log_message(f, "\n"); |
1564 | } |
1565 | } |
1566 | |
1567 | void notSuitablePrintf(struct singleEntry * entry, int okay, const char *fmt, ...) |
1568 | { |
1569 | static int once; |
1570 | va_list argp, argq; |
1571 | |
1572 | va_start(argp, fmt); |
1573 | |
1574 | va_copy(argq, argp); |
1575 | if (!once) { |
1576 | log_time(NULL); |
1577 | log_message(NULL, "command line: %s\n", saved_command_line); |
1578 | } |
1579 | log_message(NULL, "DBG: Image entry %s: ", okay ? "succeeded" : "failed"); |
1580 | log_vmessage(NULL, fmt, argq); |
1581 | |
1582 | printEntry(entry, NULL); |
1583 | va_end(argq); |
1584 | |
1585 | if (!debug) { |
1586 | once = 1; |
1587 | va_end(argp); |
1588 | return; |
1589 | } |
1590 | |
1591 | if (okay) { |
1592 | va_end(argp); |
1593 | return; |
1594 | } |
1595 | |
1596 | if (!once) |
1597 | log_message(stderr, "DBG: command line: %s\n", saved_command_line); |
1598 | once = 1; |
1599 | fprintf(stderr, "DBG: Image entry failed: "); |
1600 | vfprintf(stderr, fmt, argp); |
1601 | printEntry(entry, stderr); |
1602 | va_end(argp); |
1603 | } |
1604 | |
1605 | #define beginswith(s, c) ((s) && (s)[0] == (c)) |
1606 | |
1607 | static int endswith(const char *s, char c) |
1608 | { |
1609 | int slen; |
1610 | |
1611 | if (!s || !s[0]) |
1612 | return 0; |
1613 | slen = strlen(s) - 1; |
1614 | |
1615 | return s[slen] == c; |
1616 | } |
1617 | |
1618 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, |
1619 | int skipRemoved, int flags) { |
1620 | struct singleLine * line; |
1621 | char * fullName; |
1622 | int i; |
1623 | char * dev; |
1624 | char * rootspec; |
1625 | char * rootdev; |
1626 | |
1627 | if (skipRemoved && entry->skip) { |
1628 | notSuitablePrintf(entry, 0, "marked to skip\n"); |
1629 | return 0; |
1630 | } |
1631 | |
1632 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
1633 | if (!line) { |
1634 | notSuitablePrintf(entry, 0, "no line found\n"); |
1635 | return 0; |
1636 | } |
1637 | if (line->numElements < 2) { |
1638 | notSuitablePrintf(entry, 0, "line has only %d elements\n", |
1639 | line->numElements); |
1640 | return 0; |
1641 | } |
1642 | |
1643 | if (flags & GRUBBY_BADIMAGE_OKAY) { |
1644 | notSuitablePrintf(entry, 1, "\n"); |
1645 | return 1; |
1646 | } |
1647 | |
1648 | fullName = alloca(strlen(bootPrefix) + |
1649 | strlen(line->elements[1].item) + 1); |
1650 | rootspec = getRootSpecifier(line->elements[1].item); |
1651 | int rootspec_offset = rootspec ? strlen(rootspec) : 0; |
1652 | int hasslash = endswith(bootPrefix, '/') || |
1653 | beginswith(line->elements[1].item + rootspec_offset, '/'); |
1654 | sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/", |
1655 | line->elements[1].item + rootspec_offset); |
1656 | if (access(fullName, R_OK)) { |
1657 | notSuitablePrintf(entry, 0, "access to %s failed\n", fullName); |
1658 | return 0; |
1659 | } |
1660 | for (i = 2; i < line->numElements; i++) |
1661 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1662 | if (i < line->numElements) { |
1663 | dev = line->elements[i].item + 5; |
1664 | } else { |
1665 | /* look for a lilo style LT_ROOT line */ |
1666 | line = getLineByType(LT_ROOT, entry->lines); |
1667 | |
1668 | if (line && line->numElements >= 2) { |
1669 | dev = line->elements[1].item; |
1670 | } else { |
1671 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS. |
1672 | * grub+multiboot uses LT_MBMODULE for the args, so check that too. |
1673 | */ |
1674 | line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines); |
1675 | |
1676 | /* failed to find one */ |
1677 | if (!line) { |
1678 | notSuitablePrintf(entry, 0, "no line found\n"); |
1679 | return 0; |
1680 | } |
1681 | |
1682 | for (i = 1; i < line->numElements; i++) |
1683 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1684 | if (i < line->numElements) |
1685 | dev = line->elements[i].item + 5; |
1686 | else { |
1687 | notSuitablePrintf(entry, 0, "no root= entry found\n"); |
1688 | /* it failed too... can't find root= */ |
1689 | return 0; |
1690 | } |
1691 | } |
1692 | } |
1693 | |
1694 | dev = getpathbyspec(dev); |
1695 | if (!getpathbyspec(dev)) { |
1696 | notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n", dev); |
1697 | return 0; |
1698 | } else |
1699 | dev = getpathbyspec(dev); |
1700 | |
1701 | rootdev = findDiskForRoot(); |
1702 | if (!rootdev) { |
1703 | notSuitablePrintf(entry, 0, "can't find root device\n"); |
1704 | return 0; |
1705 | } |
1706 | |
1707 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
1708 | notSuitablePrintf(entry, 0, "uuid missing: rootdev %s, dev %s\n", |
1709 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1710 | free(rootdev); |
1711 | return 0; |
1712 | } |
1713 | |
1714 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
1715 | notSuitablePrintf(entry, 0, "uuid mismatch: rootdev %s, dev %s\n", |
1716 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1717 | free(rootdev); |
1718 | return 0; |
1719 | } |
1720 | |
1721 | free(rootdev); |
1722 | notSuitablePrintf(entry, 1, "\n"); |
1723 | |
1724 | return 1; |
1725 | } |
1726 | |
1727 | /* returns the first match on or after the one pointed to by index (if index |
1728 | is not NULL) which is not marked as skip */ |
1729 | struct singleEntry * findEntryByPath(struct grubConfig * config, |
1730 | const char * kernel, const char * prefix, |
1731 | int * index) { |
1732 | struct singleEntry * entry = NULL; |
1733 | struct singleLine * line; |
1734 | int i; |
1735 | char * chptr; |
1736 | char * rootspec = NULL; |
1737 | enum lineType_e checkType = LT_KERNEL; |
1738 | |
1739 | if (isdigit(*kernel)) { |
1740 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
1741 | |
1742 | i = 0; |
1743 | indexVars[i] = strtol(kernel, &chptr, 10); |
1744 | while (*chptr == ',') { |
1745 | i++; |
1746 | kernel = chptr + 1; |
1747 | indexVars[i] = strtol(kernel, &chptr, 10); |
1748 | } |
1749 | |
1750 | if (*chptr) { |
1751 | /* can't parse it, bail */ |
1752 | return NULL; |
1753 | } |
1754 | |
1755 | indexVars[i + 1] = -1; |
1756 | |
1757 | i = 0; |
1758 | if (index) { |
1759 | while (i < *index) i++; |
1760 | if (indexVars[i] == -1) return NULL; |
1761 | } |
1762 | |
1763 | entry = findEntryByIndex(config, indexVars[i]); |
1764 | if (!entry) return NULL; |
1765 | |
1766 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
1767 | if (!line) return NULL; |
1768 | |
1769 | if (index) *index = indexVars[i]; |
1770 | return entry; |
1771 | } |
1772 | |
1773 | if (!strcmp(kernel, "DEFAULT")) { |
1774 | if (index && *index > config->defaultImage) { |
1775 | entry = NULL; |
1776 | } else { |
1777 | entry = findEntryByIndex(config, config->defaultImage); |
1778 | if (entry && entry->skip) |
1779 | entry = NULL; |
1780 | else if (index) |
1781 | *index = config->defaultImage; |
1782 | } |
1783 | } else if (!strcmp(kernel, "ALL")) { |
1784 | if (index) |
1785 | i = *index; |
1786 | else |
1787 | i = 0; |
1788 | |
1789 | while ((entry = findEntryByIndex(config, i))) { |
1790 | if (!entry->skip) break; |
1791 | i++; |
1792 | } |
1793 | |
1794 | if (entry && index) |
1795 | *index = i; |
1796 | } else { |
1797 | if (index) |
1798 | i = *index; |
1799 | else |
1800 | i = 0; |
1801 | |
1802 | if (!strncmp(kernel, "TITLE=", 6)) { |
1803 | prefix = ""; |
1804 | checkType = LT_TITLE|LT_MENUENTRY; |
1805 | kernel += 6; |
1806 | } |
1807 | |
1808 | for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) { |
1809 | if (entry->skip) continue; |
1810 | |
1811 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry); |
1812 | |
1813 | /* check all the lines matching checkType */ |
1814 | for (line = entry->lines; line; line = line->next) { |
1815 | enum lineType_e ct = checkType; |
1816 | if (entry->multiboot && checkType == LT_KERNEL) |
1817 | ct = LT_KERNEL|LT_KERNEL_EFI|LT_MBMODULE|LT_HYPER; |
1818 | else if (checkType & LT_KERNEL) |
1819 | ct = checkType | LT_KERNEL_EFI; |
1820 | line = getLineByType(ct, line); |
1821 | if (!line) |
1822 | break; /* not found in this entry */ |
1823 | |
1824 | if (line && line->type != LT_MENUENTRY && |
1825 | line->numElements >= 2) { |
1826 | rootspec = getRootSpecifier(line->elements[1].item); |
1827 | if (!strcmp(line->elements[1].item + |
1828 | ((rootspec != NULL) ? strlen(rootspec) : 0), |
1829 | kernel + strlen(prefix))) |
1830 | break; |
1831 | } |
1832 | if(line->type == LT_MENUENTRY && |
1833 | !strcmp(line->elements[1].item, kernel)) |
1834 | break; |
1835 | } |
1836 | |
1837 | /* make sure this entry has a kernel identifier; this skips |
1838 | * non-Linux boot entries (could find netbsd etc, though, which is |
1839 | * unfortunate) |
1840 | */ |
1841 | if (line && getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines)) |
1842 | break; /* found 'im! */ |
1843 | } |
1844 | |
1845 | if (index) *index = i; |
1846 | } |
1847 | |
1848 | return entry; |
1849 | } |
1850 | |
1851 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { |
1852 | struct singleEntry * entry; |
1853 | |
1854 | entry = cfg->entries; |
1855 | while (index && entry) { |
1856 | entry = entry->next; |
1857 | index--; |
1858 | } |
1859 | |
1860 | return entry; |
1861 | } |
1862 | |
1863 | /* Find a good template to use for the new kernel. An entry is |
1864 | * good if the kernel and mkinitrd exist (even if the entry |
1865 | * is going to be removed). Try and use the default entry, but |
1866 | * if that doesn't work just take the first. If we can't find one, |
1867 | * bail. */ |
1868 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, |
1869 | int * indexPtr, int skipRemoved, int flags) { |
1870 | struct singleEntry * entry, * entry2; |
1871 | int index; |
1872 | |
1873 | if (cfg->defaultImage > -1) { |
1874 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
1875 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
1876 | if (indexPtr) *indexPtr = cfg->defaultImage; |
1877 | return entry; |
1878 | } |
1879 | } |
1880 | |
1881 | index = 0; |
1882 | while ((entry = findEntryByIndex(cfg, index))) { |
1883 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
1884 | int j; |
1885 | for (j = 0; j < index; j++) { |
1886 | entry2 = findEntryByIndex(cfg, j); |
1887 | if (entry2->skip) index--; |
1888 | } |
1889 | if (indexPtr) *indexPtr = index; |
1890 | |
1891 | return entry; |
1892 | } |
1893 | |
1894 | index++; |
1895 | } |
1896 | |
1897 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); |
1898 | |
1899 | return NULL; |
1900 | } |
1901 | |
1902 | char * findBootPrefix(void) { |
1903 | struct stat sb, sb2; |
1904 | |
1905 | stat("/", &sb); |
1906 | #ifdef __ia64__ |
1907 | stat("/boot/efi/EFI/redhat/", &sb2); |
1908 | #else |
1909 | stat("/boot", &sb2); |
1910 | #endif |
1911 | |
1912 | if (sb.st_dev == sb2.st_dev) |
1913 | return strdup(""); |
1914 | |
1915 | #ifdef __ia64__ |
1916 | return strdup("/boot/efi/EFI/redhat/"); |
1917 | #else |
1918 | return strdup("/boot"); |
1919 | #endif |
1920 | } |
1921 | |
1922 | void markRemovedImage(struct grubConfig * cfg, const char * image, |
1923 | const char * prefix) { |
1924 | struct singleEntry * entry; |
1925 | |
1926 | if (!image) |
1927 | return; |
1928 | |
1929 | /* check and see if we're removing the default image */ |
1930 | if (isdigit(*image)) { |
1931 | entry = findEntryByPath(cfg, image, prefix, NULL); |
1932 | if(entry) |
1933 | entry->skip = 1; |
1934 | return; |
1935 | } |
1936 | |
1937 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
1938 | entry->skip = 1; |
1939 | } |
1940 | |
1941 | void setDefaultImage(struct grubConfig * config, int hasNew, |
1942 | const char * defaultKernelPath, int newIsDefault, |
1943 | const char * prefix, int flags, int index) { |
1944 | struct singleEntry * entry, * entry2, * newDefault; |
1945 | int i, j; |
1946 | |
1947 | if (newIsDefault) { |
1948 | config->defaultImage = 0; |
1949 | return; |
1950 | } else if ((index >= 0) && config->cfi->defaultIsIndex) { |
1951 | if (findEntryByIndex(config, index)) |
1952 | config->defaultImage = index; |
1953 | else |
1954 | config->defaultImage = -1; |
1955 | return; |
1956 | } else if (defaultKernelPath) { |
1957 | i = 0; |
1958 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { |
1959 | config->defaultImage = i; |
1960 | } else { |
1961 | config->defaultImage = -1; |
1962 | return; |
1963 | } |
1964 | } |
1965 | |
1966 | /* defaultImage now points to what we'd like to use, but before any order |
1967 | changes */ |
1968 | if ((config->defaultImage == DEFAULT_SAVED) || |
1969 | (config->defaultImage == DEFAULT_SAVED_GRUB2)) |
1970 | /* default is set to saved, we don't want to change it */ |
1971 | return; |
1972 | |
1973 | if (config->defaultImage > -1) |
1974 | entry = findEntryByIndex(config, config->defaultImage); |
1975 | else |
1976 | entry = NULL; |
1977 | |
1978 | if (entry && !entry->skip) { |
1979 | /* we can preserve the default */ |
1980 | if (hasNew) |
1981 | config->defaultImage++; |
1982 | |
1983 | /* count the number of entries erased before this one */ |
1984 | for (j = 0; j < config->defaultImage; j++) { |
1985 | entry2 = findEntryByIndex(config, j); |
1986 | if (entry2->skip) config->defaultImage--; |
1987 | } |
1988 | } else if (hasNew) { |
1989 | config->defaultImage = 0; |
1990 | } else { |
1991 | /* Either we just erased the default (or the default line was bad |
1992 | * to begin with) and didn't put a new one in. We'll use the first |
1993 | * valid image. */ |
1994 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, |
1995 | flags); |
1996 | if (!newDefault) |
1997 | config->defaultImage = -1; |
1998 | } |
1999 | } |
2000 | |
2001 | void setFallbackImage(struct grubConfig * config, int hasNew) { |
2002 | struct singleEntry * entry, * entry2; |
2003 | int j; |
2004 | |
2005 | if (config->fallbackImage == -1) return; |
2006 | |
2007 | entry = findEntryByIndex(config, config->fallbackImage); |
2008 | if (!entry || entry->skip) { |
2009 | config->fallbackImage = -1; |
2010 | return; |
2011 | } |
2012 | |
2013 | if (hasNew) |
2014 | config->fallbackImage++; |
2015 | |
2016 | /* count the number of entries erased before this one */ |
2017 | for (j = 0; j < config->fallbackImage; j++) { |
2018 | entry2 = findEntryByIndex(config, j); |
2019 | if (entry2->skip) config->fallbackImage--; |
2020 | } |
2021 | } |
2022 | |
2023 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { |
2024 | struct singleLine * line; |
2025 | char * root = NULL; |
2026 | int i; |
2027 | |
2028 | printf("index=%d\n", index); |
2029 | |
2030 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
2031 | if (!line) { |
2032 | printf("non linux entry\n"); |
2033 | return; |
2034 | } |
2035 | |
2036 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2037 | printf("kernel=%s\n", line->elements[1].item); |
2038 | else |
2039 | printf("kernel=%s%s\n", prefix, line->elements[1].item); |
2040 | |
2041 | if (line->numElements >= 3) { |
2042 | printf("args=\""); |
2043 | i = 2; |
2044 | while (i < line->numElements) { |
2045 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
2046 | root = line->elements[i].item + 5; |
2047 | } else { |
2048 | printf("%s%s", line->elements[i].item, |
2049 | line->elements[i].indent); |
2050 | } |
2051 | |
2052 | i++; |
2053 | } |
2054 | printf("\"\n"); |
2055 | } else { |
2056 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2057 | if (line) { |
2058 | char * s; |
2059 | |
2060 | printf("args=\""); |
2061 | i = 1; |
2062 | while (i < line->numElements) { |
2063 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
2064 | root = line->elements[i].item + 5; |
2065 | } else { |
2066 | s = line->elements[i].item; |
2067 | |
2068 | printf("%s%s", s, line->elements[i].indent); |
2069 | } |
2070 | |
2071 | i++; |
2072 | } |
2073 | |
2074 | s = line->elements[i - 1].indent; |
2075 | printf("\"\n"); |
2076 | } |
2077 | } |
2078 | |
2079 | if (!root) { |
2080 | line = getLineByType(LT_ROOT, entry->lines); |
2081 | if (line && line->numElements >= 2) |
2082 | root=line->elements[1].item; |
2083 | } |
2084 | |
2085 | if (root) { |
2086 | char * s = alloca(strlen(root) + 1); |
2087 | |
2088 | strcpy(s, root); |
2089 | if (s[strlen(s) - 1] == '"') |
2090 | s[strlen(s) - 1] = '\0'; |
2091 | /* make sure the root doesn't have a trailing " */ |
2092 | printf("root=%s\n", s); |
2093 | } |
2094 | |
2095 | line = getLineByType(LT_INITRD|LT_INITRD_EFI, entry->lines); |
2096 | |
2097 | if (line && line->numElements >= 2) { |
2098 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2099 | printf("initrd="); |
2100 | else |
2101 | printf("initrd=%s", prefix); |
2102 | |
2103 | for (i = 1; i < line->numElements; i++) |
2104 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
2105 | printf("\n"); |
2106 | } |
2107 | |
2108 | line = getLineByType(LT_TITLE, entry->lines); |
2109 | if (line) { |
2110 | printf("title=%s\n", line->elements[1].item); |
2111 | } else { |
2112 | char * title; |
2113 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2114 | title = grub2ExtractTitle(line); |
2115 | if (title) |
2116 | printf("title=%s\n", title); |
2117 | } |
2118 | } |
2119 | |
2120 | int isSuseSystem(void) { |
2121 | const char * path; |
2122 | const static char default_path[] = "/etc/SuSE-release"; |
2123 | |
2124 | if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL) |
2125 | path = default_path; |
2126 | |
2127 | if (!access(path, R_OK)) |
2128 | return 1; |
2129 | return 0; |
2130 | } |
2131 | |
2132 | int isSuseGrubConf(const char * path) { |
2133 | FILE * grubConf; |
2134 | char * line = NULL; |
2135 | size_t len = 0, res = 0; |
2136 | |
2137 | grubConf = fopen(path, "r"); |
2138 | if (!grubConf) { |
2139 | dbgPrintf("Could not open SuSE configuration file '%s'\n", path); |
2140 | return 0; |
2141 | } |
2142 | |
2143 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2144 | if (!strncmp(line, "setup", 5)) { |
2145 | fclose(grubConf); |
2146 | free(line); |
2147 | return 1; |
2148 | } |
2149 | } |
2150 | |
2151 | dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n", |
2152 | path); |
2153 | |
2154 | fclose(grubConf); |
2155 | free(line); |
2156 | return 0; |
2157 | } |
2158 | |
2159 | int suseGrubConfGetLba(const char * path, int * lbaPtr) { |
2160 | FILE * grubConf; |
2161 | char * line = NULL; |
2162 | size_t res = 0, len = 0; |
2163 | |
2164 | if (!path) return 1; |
2165 | if (!lbaPtr) return 1; |
2166 | |
2167 | grubConf = fopen(path, "r"); |
2168 | if (!grubConf) return 1; |
2169 | |
2170 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2171 | if (line[res - 1] == '\n') |
2172 | line[res - 1] = '\0'; |
2173 | else if (len > res) |
2174 | line[res] = '\0'; |
2175 | else { |
2176 | line = realloc(line, res + 1); |
2177 | line[res] = '\0'; |
2178 | } |
2179 | |
2180 | if (!strncmp(line, "setup", 5)) { |
2181 | if (strstr(line, "--force-lba")) { |
2182 | *lbaPtr = 1; |
2183 | } else { |
2184 | *lbaPtr = 0; |
2185 | } |
2186 | dbgPrintf("lba: %i\n", *lbaPtr); |
2187 | break; |
2188 | } |
2189 | } |
2190 | |
2191 | free(line); |
2192 | fclose(grubConf); |
2193 | return 0; |
2194 | } |
2195 | |
2196 | int suseGrubConfGetInstallDevice(const char * path, char ** devicePtr) { |
2197 | FILE * grubConf; |
2198 | char * line = NULL; |
2199 | size_t res = 0, len = 0; |
2200 | char * lastParamPtr = NULL; |
2201 | char * secLastParamPtr = NULL; |
2202 | char installDeviceNumber = '\0'; |
2203 | char * bounds = NULL; |
2204 | |
2205 | if (!path) return 1; |
2206 | if (!devicePtr) return 1; |
2207 | |
2208 | grubConf = fopen(path, "r"); |
2209 | if (!grubConf) return 1; |
2210 | |
2211 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2212 | if (strncmp(line, "setup", 5)) |
2213 | continue; |
2214 | |
2215 | if (line[res - 1] == '\n') |
2216 | line[res - 1] = '\0'; |
2217 | else if (len > res) |
2218 | line[res] = '\0'; |
2219 | else { |
2220 | line = realloc(line, res + 1); |
2221 | line[res] = '\0'; |
2222 | } |
2223 | |
2224 | lastParamPtr = bounds = line + res; |
2225 | |
2226 | /* Last parameter in grub may be an optional IMAGE_DEVICE */ |
2227 | while (!isspace(*lastParamPtr)) |
2228 | lastParamPtr--; |
2229 | lastParamPtr++; |
2230 | |
2231 | secLastParamPtr = lastParamPtr - 2; |
2232 | dbgPrintf("lastParamPtr: %s\n", lastParamPtr); |
2233 | |
2234 | if (lastParamPtr + 3 > bounds) { |
2235 | dbgPrintf("lastParamPtr going over boundary"); |
2236 | fclose(grubConf); |
2237 | free(line); |
2238 | return 1; |
2239 | } |
2240 | if (!strncmp(lastParamPtr, "(hd", 3)) |
2241 | lastParamPtr += 3; |
2242 | dbgPrintf("lastParamPtr: %c\n", *lastParamPtr); |
2243 | |
2244 | /* |
2245 | * Second last parameter will decide wether last parameter is |
2246 | * an IMAGE_DEVICE or INSTALL_DEVICE |
2247 | */ |
2248 | while (!isspace(*secLastParamPtr)) |
2249 | secLastParamPtr--; |
2250 | secLastParamPtr++; |
2251 | |
2252 | if (secLastParamPtr + 3 > bounds) { |
2253 | dbgPrintf("secLastParamPtr going over boundary"); |
2254 | fclose(grubConf); |
2255 | free(line); |
2256 | return 1; |
2257 | } |
2258 | dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr); |
2259 | if (!strncmp(secLastParamPtr, "(hd", 3)) { |
2260 | secLastParamPtr += 3; |
2261 | dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr); |
2262 | installDeviceNumber = *secLastParamPtr; |
2263 | } else { |
2264 | installDeviceNumber = *lastParamPtr; |
2265 | } |
2266 | |
2267 | *devicePtr = malloc(6); |
2268 | snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber); |
2269 | dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber); |
2270 | fclose(grubConf); |
2271 | free(line); |
2272 | return 0; |
2273 | } |
2274 | |
2275 | free(line); |
2276 | fclose(grubConf); |
2277 | return 1; |
2278 | } |
2279 | |
2280 | int grubGetBootFromDeviceMap(const char * device, |
2281 | char ** bootPtr) { |
2282 | FILE * deviceMap; |
2283 | char * line = NULL; |
2284 | size_t res = 0, len = 0; |
2285 | char * devicePtr; |
2286 | char * bounds = NULL; |
2287 | const char * path; |
2288 | const static char default_path[] = "/boot/grub/device.map"; |
2289 | |
2290 | if (!device) return 1; |
2291 | if (!bootPtr) return 1; |
2292 | |
2293 | if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL) |
2294 | path = default_path; |
2295 | |
2296 | dbgPrintf("opening grub device.map file from: %s\n", path); |
2297 | deviceMap = fopen(path, "r"); |
2298 | if (!deviceMap) |
2299 | return 1; |
2300 | |
2301 | while ((res = getline(&line, &len, deviceMap)) != -1) { |
2302 | if (!strncmp(line, "#", 1)) |
2303 | continue; |
2304 | |
2305 | if (line[res - 1] == '\n') |
2306 | line[res - 1] = '\0'; |
2307 | else if (len > res) |
2308 | line[res] = '\0'; |
2309 | else { |
2310 | line = realloc(line, res + 1); |
2311 | line[res] = '\0'; |
2312 | } |
2313 | |
2314 | devicePtr = line; |
2315 | bounds = line + res; |
2316 | |
2317 | while ((isspace(*line) && ((devicePtr + 1) <= bounds))) |
2318 | devicePtr++; |
2319 | dbgPrintf("device: %s\n", devicePtr); |
2320 | |
2321 | if (!strncmp(devicePtr, device, strlen(device))) { |
2322 | devicePtr += strlen(device); |
2323 | while (isspace(*devicePtr) && ((devicePtr + 1) <= bounds)) |
2324 | devicePtr++; |
2325 | |
2326 | *bootPtr = strdup(devicePtr); |
2327 | break; |
2328 | } |
2329 | } |
2330 | |
2331 | free(line); |
2332 | fclose(deviceMap); |
2333 | return 0; |
2334 | } |
2335 | |
2336 | int suseGrubConfGetBoot(const char * path, char ** bootPtr) { |
2337 | char * grubDevice; |
2338 | |
2339 | if (suseGrubConfGetInstallDevice(path, &grubDevice)) |
2340 | dbgPrintf("error looking for grub installation device\n"); |
2341 | else |
2342 | dbgPrintf("grubby installation device: %s\n", grubDevice); |
2343 | |
2344 | if (grubGetBootFromDeviceMap(grubDevice, bootPtr)) |
2345 | dbgPrintf("error looking for grub boot device\n"); |
2346 | else |
2347 | dbgPrintf("grubby boot device: %s\n", *bootPtr); |
2348 | |
2349 | free(grubDevice); |
2350 | return 0; |
2351 | } |
2352 | |
2353 | int parseSuseGrubConf(int * lbaPtr, char ** bootPtr) { |
2354 | /* |
2355 | * This SuSE grub configuration file at this location is not your average |
2356 | * grub configuration file, but instead the grub commands used to setup |
2357 | * grub on that system. |
2358 | */ |
2359 | const char * path; |
2360 | const static char default_path[] = "/etc/grub.conf"; |
2361 | |
2362 | if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL) |
2363 | path = default_path; |
2364 | |
2365 | if (!isSuseGrubConf(path)) return 1; |
2366 | |
2367 | if (lbaPtr) { |
2368 | *lbaPtr = 0; |
2369 | if (suseGrubConfGetLba(path, lbaPtr)) |
2370 | return 1; |
2371 | } |
2372 | |
2373 | if (bootPtr) { |
2374 | *bootPtr = NULL; |
2375 | suseGrubConfGetBoot(path, bootPtr); |
2376 | } |
2377 | |
2378 | return 0; |
2379 | } |
2380 | |
2381 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { |
2382 | FILE * in; |
2383 | char buf[1024]; |
2384 | char * chptr; |
2385 | char * start; |
2386 | char * param; |
2387 | |
2388 | in = fopen("/etc/conf.d/grub", "r"); |
2389 | if (!in) return 1; |
2390 | |
2391 | if (lbaPtr) *lbaPtr = 0; |
2392 | if (bootPtr) *bootPtr = NULL; |
2393 | |
2394 | while (fgets(buf, sizeof(buf), in)) { |
2395 | start = buf; |
2396 | while (isspace(*start)) start++; |
2397 | if (*start == '#') continue; |
2398 | |
2399 | chptr = strchr(start, '='); |
2400 | if (!chptr) continue; |
2401 | chptr--; |
2402 | while (*chptr && isspace(*chptr)) chptr--; |
2403 | chptr++; |
2404 | *chptr = '\0'; |
2405 | |
2406 | param = chptr + 1; |
2407 | while (*param && isspace(*param)) param++; |
2408 | if (*param == '=') { |
2409 | param++; |
2410 | while (*param && isspace(*param)) param++; |
2411 | } |
2412 | |
2413 | chptr = param; |
2414 | while (*chptr && !isspace(*chptr)) chptr++; |
2415 | *chptr = '\0'; |
2416 | |
2417 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
2418 | *lbaPtr = 1; |
2419 | else if (!strcmp(start, "boot") && bootPtr) |
2420 | *bootPtr = strdup(param); |
2421 | } |
2422 | |
2423 | fclose(in); |
2424 | |
2425 | return 0; |
2426 | } |
2427 | |
2428 | void dumpSysconfigGrub(void) { |
2429 | char * boot = NULL; |
2430 | int lba; |
2431 | |
2432 | if (isSuseSystem()) { |
2433 | if (parseSuseGrubConf(&lba, &boot)) { |
2434 | free(boot); |
2435 | return; |
2436 | } |
2437 | } else { |
2438 | if (parseSysconfigGrub(&lba, &boot)) { |
2439 | free(boot); |
2440 | return; |
2441 | } |
2442 | } |
2443 | |
2444 | if (lba) printf("lba\n"); |
2445 | if (boot) { |
2446 | printf("boot=%s\n", boot); |
2447 | free(boot); |
2448 | } |
2449 | } |
2450 | |
2451 | int displayInfo(struct grubConfig * config, char * kernel, |
2452 | const char * prefix) { |
2453 | int i = 0; |
2454 | struct singleEntry * entry; |
2455 | struct singleLine * line; |
2456 | |
2457 | entry = findEntryByPath(config, kernel, prefix, &i); |
2458 | if (!entry) { |
2459 | fprintf(stderr, _("grubby: kernel not found\n")); |
2460 | return 1; |
2461 | } |
2462 | |
2463 | /* this is a horrible hack to support /etc/conf.d/grub; there must |
2464 | be a better way */ |
2465 | if (config->cfi == &grubConfigType) { |
2466 | dumpSysconfigGrub(); |
2467 | } else { |
2468 | line = getLineByType(LT_BOOT, config->theLines); |
2469 | if (line && line->numElements >= 1) { |
2470 | printf("boot=%s\n", line->elements[1].item); |
2471 | } |
2472 | |
2473 | line = getLineByType(LT_LBA, config->theLines); |
2474 | if (line) printf("lba\n"); |
2475 | } |
2476 | |
2477 | displayEntry(entry, prefix, i); |
2478 | |
2479 | i++; |
2480 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
2481 | displayEntry(entry, prefix, i); |
2482 | i++; |
2483 | } |
2484 | |
2485 | return 0; |
2486 | } |
2487 | |
2488 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
2489 | struct singleLine * tmplLine, |
2490 | struct singleLine * prevLine, |
2491 | const char * val, |
2492 | struct configFileInfo * cfi) |
2493 | { |
2494 | struct singleLine * newLine = lineDup(tmplLine); |
2495 | |
2496 | if (isEfi && cfi == &grub2ConfigType) { |
2497 | enum lineType_e old = newLine->type; |
2498 | newLine->type = preferredLineType(newLine->type, cfi); |
2499 | if (old != newLine->type) |
2500 | newLine->elements[0].item = getKeyByType(newLine->type, cfi); |
2501 | } |
2502 | |
2503 | if (val) { |
2504 | /* override the inherited value with our own. |
2505 | * This is a little weak because it only applies to elements[1] |
2506 | */ |
2507 | if (newLine->numElements > 1) |
2508 | removeElement(newLine, 1); |
2509 | insertElement(newLine, val, 1, cfi); |
2510 | |
2511 | /* but try to keep the rootspec from the template... sigh */ |
2512 | if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD|LT_KERNEL_EFI|LT_INITRD_EFI)) { |
2513 | char * rootspec = getRootSpecifier(tmplLine->elements[1].item); |
2514 | if (rootspec != NULL) { |
2515 | free(newLine->elements[1].item); |
2516 | newLine->elements[1].item = |
2517 | sdupprintf("%s%s", rootspec, val); |
2518 | } |
2519 | } |
2520 | } |
2521 | |
2522 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? |
2523 | newLine->elements[0].item : ""); |
2524 | |
2525 | if (!entry->lines) { |
2526 | /* first one on the list */ |
2527 | entry->lines = newLine; |
2528 | } else if (prevLine) { |
2529 | /* add after prevLine */ |
2530 | newLine->next = prevLine->next; |
2531 | prevLine->next = newLine; |
2532 | } |
2533 | |
2534 | return newLine; |
2535 | } |
2536 | |
2537 | /* val may be NULL */ |
2538 | struct singleLine * addLine(struct singleEntry * entry, |
2539 | struct configFileInfo * cfi, |
2540 | enum lineType_e type, char * defaultIndent, |
2541 | const char * val) { |
2542 | struct singleLine * line, * prev; |
2543 | struct keywordTypes * kw; |
2544 | struct singleLine tmpl; |
2545 | |
2546 | /* NB: This function shouldn't allocate items on the heap, rather on the |
2547 | * stack since it calls addLineTmpl which will make copies. |
2548 | */ |
2549 | if (type == LT_TITLE && cfi->titleBracketed) { |
2550 | /* we're doing a bracketed title (zipl) */ |
2551 | tmpl.type = type; |
2552 | tmpl.numElements = 1; |
2553 | tmpl.elements = alloca(sizeof(*tmpl.elements)); |
2554 | tmpl.elements[0].item = alloca(strlen(val)+3); |
2555 | sprintf(tmpl.elements[0].item, "[%s]", val); |
2556 | tmpl.elements[0].indent = ""; |
2557 | val = NULL; |
2558 | } else if (type == LT_MENUENTRY) { |
2559 | char *lineend = "--class gnu-linux --class gnu --class os {"; |
2560 | if (!val) { |
2561 | fprintf(stderr, "Line type LT_MENUENTRY requires a value\n"); |
2562 | abort(); |
2563 | } |
2564 | kw = getKeywordByType(type, cfi); |
2565 | if (!kw) { |
2566 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2567 | abort(); |
2568 | } |
2569 | tmpl.indent = ""; |
2570 | tmpl.type = type; |
2571 | tmpl.numElements = 3; |
2572 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2573 | tmpl.elements[0].item = kw->key; |
2574 | tmpl.elements[0].indent = alloca(2); |
2575 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2576 | tmpl.elements[1].item = (char *)val; |
2577 | tmpl.elements[1].indent = alloca(2); |
2578 | sprintf(tmpl.elements[1].indent, "%c", kw->nextChar); |
2579 | tmpl.elements[2].item = alloca(strlen(lineend)+1); |
2580 | strcpy(tmpl.elements[2].item, lineend); |
2581 | tmpl.elements[2].indent = ""; |
2582 | } else { |
2583 | kw = getKeywordByType(type, cfi); |
2584 | if (!kw) { |
2585 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2586 | abort(); |
2587 | } |
2588 | tmpl.type = type; |
2589 | tmpl.numElements = val ? 2 : 1; |
2590 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2591 | tmpl.elements[0].item = kw->key; |
2592 | tmpl.elements[0].indent = alloca(2); |
2593 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2594 | if (val) { |
2595 | tmpl.elements[1].item = (char *)val; |
2596 | tmpl.elements[1].indent = ""; |
2597 | } |
2598 | } |
2599 | |
2600 | /* The last non-empty line gives us the indention to us and the line |
2601 | to insert after. Note that comments are considered empty lines, which |
2602 | may not be ideal? If there are no lines or we are looking at the |
2603 | first line, we use defaultIndent (the first line is normally indented |
2604 | differently from the rest) */ |
2605 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
2606 | if (line->numElements) prev = line; |
2607 | /* fall back on the last line if prev isn't otherwise set */ |
2608 | if (!line->next && !prev) prev = line; |
2609 | } |
2610 | |
2611 | struct singleLine *menuEntry; |
2612 | menuEntry = getLineByType(LT_MENUENTRY, entry->lines); |
2613 | if (tmpl.type == LT_ENTRY_END) { |
2614 | if (menuEntry) |
2615 | tmpl.indent = menuEntry->indent; |
2616 | else |
2617 | tmpl.indent = defaultIndent ?: ""; |
2618 | } else if (tmpl.type != LT_MENUENTRY) { |
2619 | if (menuEntry) |
2620 | tmpl.indent = "\t"; |
2621 | else if (prev == entry->lines) |
2622 | tmpl.indent = defaultIndent ?: ""; |
2623 | else |
2624 | tmpl.indent = prev->indent; |
2625 | } |
2626 | |
2627 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
2628 | } |
2629 | |
2630 | void removeLine(struct singleEntry * entry, struct singleLine * line) { |
2631 | struct singleLine * prev; |
2632 | int i; |
2633 | |
2634 | for (i = 0; i < line->numElements; i++) { |
2635 | free(line->elements[i].item); |
2636 | free(line->elements[i].indent); |
2637 | } |
2638 | free(line->elements); |
2639 | free(line->indent); |
2640 | |
2641 | if (line == entry->lines) { |
2642 | entry->lines = line->next; |
2643 | } else { |
2644 | prev = entry->lines; |
2645 | while (prev->next != line) prev = prev->next; |
2646 | prev->next = line->next; |
2647 | } |
2648 | |
2649 | free(line); |
2650 | } |
2651 | |
2652 | static void requote(struct singleLine *tmplLine, struct configFileInfo * cfi) |
2653 | { |
2654 | struct singleLine newLine = { |
2655 | .indent = tmplLine->indent, |
2656 | .type = tmplLine->type, |
2657 | .next = tmplLine->next, |
2658 | }; |
2659 | int firstQuotedItem = -1; |
2660 | int quoteLen = 0; |
2661 | int j; |
2662 | int element = 0; |
2663 | char *c; |
2664 | |
2665 | c = malloc(strlen(tmplLine->elements[0].item) + 1); |
2666 | strcpy(c, tmplLine->elements[0].item); |
2667 | insertElement(&newLine, c, element++, cfi); |
2668 | free(c); |
2669 | c = NULL; |
2670 | |
2671 | for (j = 1; j < tmplLine->numElements; j++) { |
2672 | if (firstQuotedItem == -1) { |
2673 | quoteLen += strlen(tmplLine->elements[j].item); |
2674 | |
2675 | if (isquote(tmplLine->elements[j].item[0])) { |
2676 | firstQuotedItem = j; |
2677 | quoteLen += strlen(tmplLine->elements[j].indent); |
2678 | } else { |
2679 | c = malloc(quoteLen + 1); |
2680 | strcpy(c, tmplLine->elements[j].item); |
2681 | insertElement(&newLine, c, element++, cfi); |
2682 | free(c); |
2683 | quoteLen = 0; |
2684 | } |
2685 | } else { |
2686 | int itemlen = strlen(tmplLine->elements[j].item); |
2687 | quoteLen += itemlen; |
2688 | quoteLen += strlen(tmplLine->elements[j].indent); |
2689 | |
2690 | if (isquote(tmplLine->elements[j].item[itemlen - 1])) { |
2691 | c = malloc(quoteLen + 1); |
2692 | c[0] = '\0'; |
2693 | for (int i = firstQuotedItem; i < j+1; i++) { |
2694 | strcat(c, tmplLine->elements[i].item); |
2695 | strcat(c, tmplLine->elements[i].indent); |
2696 | } |
2697 | insertElement(&newLine, c, element++, cfi); |
2698 | free(c); |
2699 | |
2700 | firstQuotedItem = -1; |
2701 | quoteLen = 0; |
2702 | } |
2703 | } |
2704 | } |
2705 | while (tmplLine->numElements) |
2706 | removeElement(tmplLine, 0); |
2707 | if (tmplLine->elements) |
2708 | free(tmplLine->elements); |
2709 | |
2710 | tmplLine->numElements = newLine.numElements; |
2711 | tmplLine->elements = newLine.elements; |
2712 | } |
2713 | |
2714 | static void insertElement(struct singleLine * line, |
2715 | const char * item, int insertHere, |
2716 | struct configFileInfo * cfi) |
2717 | { |
2718 | struct keywordTypes * kw; |
2719 | char indent[2] = ""; |
2720 | |
2721 | /* sanity check */ |
2722 | if (insertHere > line->numElements) { |
2723 | dbgPrintf("insertElement() adjusting insertHere from %d to %d\n", |
2724 | insertHere, line->numElements); |
2725 | insertHere = line->numElements; |
2726 | } |
2727 | |
2728 | line->elements = realloc(line->elements, (line->numElements + 1) * |
2729 | sizeof(*line->elements)); |
2730 | memmove(&line->elements[insertHere+1], |
2731 | &line->elements[insertHere], |
2732 | (line->numElements - insertHere) * |
2733 | sizeof(*line->elements)); |
2734 | line->elements[insertHere].item = strdup(item); |
2735 | |
2736 | kw = getKeywordByType(line->type, cfi); |
2737 | |
2738 | if (line->numElements == 0) { |
2739 | indent[0] = '\0'; |
2740 | } else if (insertHere == 0) { |
2741 | indent[0] = kw->nextChar; |
2742 | } else if (kw->separatorChar != '\0') { |
2743 | indent[0] = kw->separatorChar; |
2744 | } else { |
2745 | indent[0] = ' '; |
2746 | } |
2747 | |
2748 | if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') { |
2749 | /* move the end-of-line forward */ |
2750 | line->elements[insertHere].indent = |
2751 | line->elements[insertHere-1].indent; |
2752 | line->elements[insertHere-1].indent = strdup(indent); |
2753 | } else { |
2754 | line->elements[insertHere].indent = strdup(indent); |
2755 | } |
2756 | |
2757 | line->numElements++; |
2758 | |
2759 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", |
2760 | line->elements[0].item, |
2761 | line->elements[insertHere].item, |
2762 | line->elements[insertHere].indent, |
2763 | insertHere); |
2764 | } |
2765 | |
2766 | static void removeElement(struct singleLine * line, int removeHere) { |
2767 | int i; |
2768 | |
2769 | /* sanity check */ |
2770 | if (removeHere >= line->numElements) return; |
2771 | |
2772 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, |
2773 | removeHere, line->elements[removeHere].item); |
2774 | |
2775 | free(line->elements[removeHere].item); |
2776 | |
2777 | if (removeHere > 1) { |
2778 | /* previous argument gets this argument's post-indentation */ |
2779 | free(line->elements[removeHere-1].indent); |
2780 | line->elements[removeHere-1].indent = |
2781 | line->elements[removeHere].indent; |
2782 | } else { |
2783 | free(line->elements[removeHere].indent); |
2784 | } |
2785 | |
2786 | /* now collapse the array, but don't bother to realloc smaller */ |
2787 | for (i = removeHere; i < line->numElements - 1; i++) |
2788 | line->elements[i] = line->elements[i + 1]; |
2789 | |
2790 | line->numElements--; |
2791 | } |
2792 | |
2793 | int argMatch(const char * one, const char * two) { |
2794 | char * first, * second; |
2795 | char * chptr; |
2796 | |
2797 | first = strcpy(alloca(strlen(one) + 1), one); |
2798 | second = strcpy(alloca(strlen(two) + 1), two); |
2799 | |
2800 | chptr = strchr(first, '='); |
2801 | if (chptr) *chptr = '\0'; |
2802 | |
2803 | chptr = strchr(second, '='); |
2804 | if (chptr) *chptr = '\0'; |
2805 | |
2806 | return strcmp(first, second); |
2807 | } |
2808 | |
2809 | int updateActualImage(struct grubConfig * cfg, const char * image, |
2810 | const char * prefix, const char * addArgs, |
2811 | const char * removeArgs, int multibootArgs) { |
2812 | struct singleEntry * entry; |
2813 | struct singleLine * line, * rootLine; |
2814 | int index = 0; |
2815 | int i, k; |
2816 | const char ** newArgs, ** oldArgs; |
2817 | const char ** arg; |
2818 | int useKernelArgs, useRoot; |
2819 | int firstElement; |
2820 | int *usedElements; |
2821 | int doreplace; |
2822 | |
2823 | if (!image) return 0; |
2824 | |
2825 | if (!addArgs) { |
2826 | newArgs = malloc(sizeof(*newArgs)); |
2827 | *newArgs = NULL; |
2828 | } else { |
2829 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
2830 | fprintf(stderr, |
2831 | _("grubby: error separating arguments '%s'\n"), addArgs); |
2832 | return 1; |
2833 | } |
2834 | } |
2835 | |
2836 | if (!removeArgs) { |
2837 | oldArgs = malloc(sizeof(*oldArgs)); |
2838 | *oldArgs = NULL; |
2839 | } else { |
2840 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
2841 | fprintf(stderr, |
2842 | _("grubby: error separating arguments '%s'\n"), removeArgs); |
2843 | free(newArgs); |
2844 | return 1; |
2845 | } |
2846 | } |
2847 | |
2848 | |
2849 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
2850 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); |
2851 | |
2852 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
2853 | && !multibootArgs); |
2854 | |
2855 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
2856 | |
2857 | if (multibootArgs && !entry->multiboot) |
2858 | continue; |
2859 | |
2860 | /* Determine where to put the args. If this config supports |
2861 | * LT_KERNELARGS, use that. Otherwise use |
2862 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. |
2863 | */ |
2864 | if (useKernelArgs) { |
2865 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2866 | if (!line) { |
2867 | /* no LT_KERNELARGS, need to add it */ |
2868 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, |
2869 | cfg->secondaryIndent, NULL); |
2870 | } |
2871 | firstElement = 1; |
2872 | |
2873 | } else if (multibootArgs) { |
2874 | line = getLineByType(LT_HYPER, entry->lines); |
2875 | if (!line) { |
2876 | /* a multiboot entry without LT_HYPER? */ |
2877 | continue; |
2878 | } |
2879 | firstElement = 2; |
2880 | |
2881 | } else { |
2882 | line = getLineByType(LT_KERNEL|LT_MBMODULE|LT_KERNEL_EFI, entry->lines); |
2883 | if (!line) { |
2884 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ |
2885 | continue; |
2886 | } |
2887 | firstElement = 2; |
2888 | } |
2889 | |
2890 | /* handle the elilo case which does: |
2891 | * append="hypervisor args -- kernel args" |
2892 | */ |
2893 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { |
2894 | /* this is a multiboot entry, make sure there's |
2895 | * -- on the args line |
2896 | */ |
2897 | for (i = firstElement; i < line->numElements; i++) { |
2898 | if (!strcmp(line->elements[i].item, "--")) |
2899 | break; |
2900 | } |
2901 | if (i == line->numElements) { |
2902 | /* assume all existing args are kernel args, |
2903 | * prepend -- to make it official |
2904 | */ |
2905 | insertElement(line, "--", firstElement, cfg->cfi); |
2906 | i = firstElement; |
2907 | } |
2908 | if (!multibootArgs) { |
2909 | /* kernel args start after the -- */ |
2910 | firstElement = i + 1; |
2911 | } |
2912 | } else if (cfg->cfi->mbConcatArgs) { |
2913 | /* this is a non-multiboot entry, remove hyper args */ |
2914 | for (i = firstElement; i < line->numElements; i++) { |
2915 | if (!strcmp(line->elements[i].item, "--")) |
2916 | break; |
2917 | } |
2918 | if (i < line->numElements) { |
2919 | /* remove args up to -- */ |
2920 | while (strcmp(line->elements[firstElement].item, "--")) |
2921 | removeElement(line, firstElement); |
2922 | /* remove -- */ |
2923 | removeElement(line, firstElement); |
2924 | } |
2925 | } |
2926 | |
2927 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
2928 | |
2929 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
2930 | |
2931 | doreplace = 1; |
2932 | for (i = firstElement; i < line->numElements; i++) { |
2933 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2934 | !strcmp(line->elements[i].item, "--")) |
2935 | { |
2936 | /* reached the end of hyper args, insert here */ |
2937 | doreplace = 0; |
2938 | break; |
2939 | } |
2940 | if (usedElements[i]) |
2941 | continue; |
2942 | if (!argMatch(line->elements[i].item, *arg)) { |
2943 | usedElements[i]=1; |
2944 | break; |
2945 | } |
2946 | } |
2947 | |
2948 | if (i < line->numElements && doreplace) { |
2949 | /* direct replacement */ |
2950 | free(line->elements[i].item); |
2951 | line->elements[i].item = strdup(*arg); |
2952 | |
2953 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
2954 | /* root= replacement */ |
2955 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2956 | if (rootLine) { |
2957 | free(rootLine->elements[1].item); |
2958 | rootLine->elements[1].item = strdup(*arg + 5); |
2959 | } else { |
2960 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, |
2961 | cfg->secondaryIndent, *arg + 5); |
2962 | } |
2963 | } |
2964 | |
2965 | else { |
2966 | /* insert/append */ |
2967 | insertElement(line, *arg, i, cfg->cfi); |
2968 | usedElements = realloc(usedElements, line->numElements * |
2969 | sizeof(*usedElements)); |
2970 | memmove(&usedElements[i + 1], &usedElements[i], |
2971 | line->numElements - i - 1); |
2972 | usedElements[i] = 1; |
2973 | |
2974 | /* if we updated a root= here even though there is a |
2975 | LT_ROOT available we need to remove the LT_ROOT entry |
2976 | (this will happen if we switch from a device to a label) */ |
2977 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
2978 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2979 | if (rootLine) |
2980 | removeLine(entry, rootLine); |
2981 | } |
2982 | } |
2983 | } |
2984 | |
2985 | free(usedElements); |
2986 | |
2987 | for (arg = oldArgs; *arg; arg++) { |
2988 | for (i = firstElement; i < line->numElements; i++) { |
2989 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2990 | !strcmp(line->elements[i].item, "--")) |
2991 | /* reached the end of hyper args, stop here */ |
2992 | break; |
2993 | if (!argMatch(line->elements[i].item, *arg)) { |
2994 | removeElement(line, i); |
2995 | break; |
2996 | } |
2997 | } |
2998 | /* handle removing LT_ROOT line too */ |
2999 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
3000 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3001 | if (rootLine) |
3002 | removeLine(entry, rootLine); |
3003 | } |
3004 | } |
3005 | |
3006 | if (line->numElements == 1) { |
3007 | /* don't need the line at all (note it has to be a |
3008 | LT_KERNELARGS for this to happen */ |
3009 | removeLine(entry, line); |
3010 | } |
3011 | } |
3012 | |
3013 | free(newArgs); |
3014 | free(oldArgs); |
3015 | |
3016 | return 0; |
3017 | } |
3018 | |
3019 | int updateImage(struct grubConfig * cfg, const char * image, |
3020 | const char * prefix, const char * addArgs, |
3021 | const char * removeArgs, |
3022 | const char * addMBArgs, const char * removeMBArgs) { |
3023 | int rc = 0; |
3024 | |
3025 | if (!image) return rc; |
3026 | |
3027 | /* update the main args first... */ |
3028 | if (addArgs || removeArgs) |
3029 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); |
3030 | if (rc) return rc; |
3031 | |
3032 | /* and now any multiboot args */ |
3033 | if (addMBArgs || removeMBArgs) |
3034 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); |
3035 | return rc; |
3036 | } |
3037 | |
3038 | int updateInitrd(struct grubConfig * cfg, const char * image, |
3039 | const char * prefix, const char * initrd) { |
3040 | struct singleEntry * entry; |
3041 | struct singleLine * line, * kernelLine, *endLine = NULL; |
3042 | int index = 0; |
3043 | |
3044 | if (!image) return 0; |
3045 | |
3046 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3047 | kernelLine = getLineByType(LT_KERNEL|LT_KERNEL_EFI, entry->lines); |
3048 | if (!kernelLine) continue; |
3049 | |
3050 | line = getLineByType(LT_INITRD|LT_INITRD_EFI, entry->lines); |
3051 | if (line) |
3052 | removeLine(entry, line); |
3053 | if (prefix) { |
3054 | int prefixLen = strlen(prefix); |
3055 | if (!strncmp(initrd, prefix, prefixLen)) |
3056 | initrd += prefixLen; |
3057 | } |
3058 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
3059 | if (endLine) |
3060 | removeLine(entry, endLine); |
3061 | line = addLine(entry, cfg->cfi, preferredLineType(LT_INITRD, cfg->cfi), |
3062 | kernelLine->indent, initrd); |
3063 | if (!line) |
3064 | return 1; |
3065 | if (endLine) { |
3066 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
3067 | if (!line) |
3068 | return 1; |
3069 | } |
3070 | |
3071 | break; |
3072 | } |
3073 | |
3074 | return 0; |
3075 | } |
3076 | |
3077 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { |
3078 | int fd; |
3079 | unsigned char bootSect[512]; |
3080 | int offset; |
3081 | |
3082 | fd = open(device, O_RDONLY); |
3083 | if (fd < 0) { |
3084 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3085 | device, strerror(errno)); |
3086 | return 1; |
3087 | } |
3088 | |
3089 | if (read(fd, bootSect, 512) != 512) { |
3090 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3091 | device, strerror(errno)); |
3092 | return 1; |
3093 | } |
3094 | close(fd); |
3095 | |
3096 | /* first three bytes should match, a jmp short should be in there */ |
3097 | if (memcmp(boot, bootSect, 3)) |
3098 | return 0; |
3099 | |
3100 | if (boot[1] == JMP_SHORT_OPCODE) { |
3101 | offset = boot[2] + 2; |
3102 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
3103 | offset = (boot[3] << 8) + boot[2] + 2; |
3104 | } else if (boot[0] == JMP_SHORT_OPCODE) { |
3105 | offset = boot[1] + 2; |
3106 | /* |
3107 | * it looks like grub, when copying stage1 into the mbr, patches stage1 |
3108 | * right after the JMP location, replacing other instructions such as |
3109 | * JMPs for NOOPs. So, relax the check a little bit by skipping those |
3110 | * different bytes. |
3111 | */ |
3112 | if ((bootSect[offset + 1] == NOOP_OPCODE) |
3113 | && (bootSect[offset + 2] == NOOP_OPCODE)) { |
3114 | offset = offset + 3; |
3115 | } |
3116 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
3117 | offset = (boot[2] << 8) + boot[1] + 2; |
3118 | } else { |
3119 | return 0; |
3120 | } |
3121 | |
3122 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
3123 | return 0; |
3124 | |
3125 | return 2; |
3126 | } |
3127 | |
3128 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { |
3129 | int fd; |
3130 | char buf[65536]; |
3131 | char * end; |
3132 | char * chptr; |
3133 | char * chptr2; |
3134 | int rc; |
3135 | |
3136 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
3137 | *raw* devices listed in there */ |
3138 | |
3139 | if (!strncmp(mdDev, "/dev/", 5)) |
3140 | mdDev += 5; |
3141 | |
3142 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
3143 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
3144 | strerror(errno)); |
3145 | return 2; |
3146 | } |
3147 | |
3148 | rc = read(fd, buf, sizeof(buf) - 1); |
3149 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
3150 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
3151 | strerror(errno)); |
3152 | close(fd); |
3153 | return 2; |
3154 | } |
3155 | close(fd); |
3156 | buf[rc] = '\0'; |
3157 | |
3158 | chptr = buf; |
3159 | while (*chptr) { |
3160 | end = strchr(chptr, '\n'); |
3161 | if (!end) break; |
3162 | *end = '\0'; |
3163 | |
3164 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
3165 | chptr[strlen(mdDev)] == ' ') { |
3166 | |
3167 | /* found the device */ |
3168 | while (*chptr && *chptr != ':') chptr++; |
3169 | chptr++; |
3170 | while (*chptr && isspace(*chptr)) chptr++; |
3171 | |
3172 | /* skip the "active" bit */ |
3173 | while (*chptr && !isspace(*chptr)) chptr++; |
3174 | while (*chptr && isspace(*chptr)) chptr++; |
3175 | |
3176 | /* skip the raid level */ |
3177 | while (*chptr && !isspace(*chptr)) chptr++; |
3178 | while (*chptr && isspace(*chptr)) chptr++; |
3179 | |
3180 | /* everything else is partition stuff */ |
3181 | while (*chptr) { |
3182 | chptr2 = chptr; |
3183 | while (*chptr2 && *chptr2 != '[') chptr2++; |
3184 | if (!*chptr2) break; |
3185 | |
3186 | /* yank off the numbers at the end */ |
3187 | chptr2--; |
3188 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; |
3189 | chptr2++; |
3190 | *chptr2 = '\0'; |
3191 | |
3192 | /* Better, now we need the /dev/ back. We're done with |
3193 | * everything before this point, so we can just put |
3194 | * the /dev/ part there. There will always be room. */ |
3195 | memcpy(chptr - 5, "/dev/", 5); |
3196 | rc = checkDeviceBootloader(chptr - 5, boot); |
3197 | if (rc != 2) { |
3198 | return rc; |
3199 | } |
3200 | |
3201 | chptr = chptr2 + 1; |
3202 | /* skip the [11] bit */ |
3203 | while (*chptr && !isspace(*chptr)) chptr++; |
3204 | /* and move to the next one */ |
3205 | while (*chptr && isspace(*chptr)) chptr++; |
3206 | } |
3207 | |
3208 | /* we're good to go */ |
3209 | return 2; |
3210 | } |
3211 | |
3212 | chptr = end + 1; |
3213 | } |
3214 | |
3215 | fprintf(stderr, |
3216 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
3217 | mdDev); |
3218 | return 0; |
3219 | } |
3220 | |
3221 | int checkForLilo(struct grubConfig * config) { |
3222 | int fd; |
3223 | unsigned char boot[512]; |
3224 | struct singleLine * line; |
3225 | |
3226 | for (line = config->theLines; line; line = line->next) |
3227 | if (line->type == LT_BOOT) break; |
3228 | |
3229 | if (!line) { |
3230 | fprintf(stderr, |
3231 | _("grubby: no boot line found in lilo configuration\n")); |
3232 | return 1; |
3233 | } |
3234 | |
3235 | if (line->numElements != 2) return 1; |
3236 | |
3237 | fd = open("/boot/boot.b", O_RDONLY); |
3238 | if (fd < 0) { |
3239 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3240 | "/boot/boot.b", strerror(errno)); |
3241 | return 1; |
3242 | } |
3243 | |
3244 | if (read(fd, boot, 512) != 512) { |
3245 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3246 | "/boot/boot.b", strerror(errno)); |
3247 | return 1; |
3248 | } |
3249 | close(fd); |
3250 | |
3251 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
3252 | return checkLiloOnRaid(line->elements[1].item, boot); |
3253 | |
3254 | return checkDeviceBootloader(line->elements[1].item, boot); |
3255 | } |
3256 | |
3257 | int checkForGrub2(struct grubConfig * config) { |
3258 | if (!access("/etc/grub.d/", R_OK)) |
3259 | return 2; |
3260 | |
3261 | return 1; |
3262 | } |
3263 | |
3264 | int checkForGrub(struct grubConfig * config) { |
3265 | int fd; |
3266 | unsigned char bootSect[512]; |
3267 | char * boot; |
3268 | int onSuse = isSuseSystem(); |
3269 | |
3270 | |
3271 | if (onSuse) { |
3272 | if (parseSuseGrubConf(NULL, &boot)) |
3273 | return 0; |
3274 | } else { |
3275 | if (parseSysconfigGrub(NULL, &boot)) |
3276 | return 0; |
3277 | } |
3278 | |
3279 | /* assume grub is not installed -- not an error condition */ |
3280 | if (!boot) |
3281 | return 0; |
3282 | |
3283 | fd = open("/boot/grub/stage1", O_RDONLY); |
3284 | if (fd < 0) |
3285 | /* this doesn't exist if grub hasn't been installed */ |
3286 | return 0; |
3287 | |
3288 | if (read(fd, bootSect, 512) != 512) { |
3289 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3290 | "/boot/grub/stage1", strerror(errno)); |
3291 | close(fd); |
3292 | return 1; |
3293 | } |
3294 | close(fd); |
3295 | |
3296 | /* The more elaborate checks do not work on SuSE. The checks done |
3297 | * seem to be reasonble (at least for now), so just return success |
3298 | */ |
3299 | if (onSuse) |
3300 | return 2; |
3301 | |
3302 | return checkDeviceBootloader(boot, bootSect); |
3303 | } |
3304 | |
3305 | int checkForExtLinux(struct grubConfig * config) { |
3306 | int fd; |
3307 | unsigned char bootSect[512]; |
3308 | char * boot; |
3309 | char executable[] = "/boot/extlinux/extlinux"; |
3310 | |
3311 | printf("entered: checkForExtLinux()\n"); |
3312 | |
3313 | if (parseSysconfigGrub(NULL, &boot)) |
3314 | return 0; |
3315 | |
3316 | /* assume grub is not installed -- not an error condition */ |
3317 | if (!boot) |
3318 | return 0; |
3319 | |
3320 | fd = open(executable, O_RDONLY); |
3321 | if (fd < 0) |
3322 | /* this doesn't exist if grub hasn't been installed */ |
3323 | return 0; |
3324 | |
3325 | if (read(fd, bootSect, 512) != 512) { |
3326 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3327 | executable, strerror(errno)); |
3328 | return 1; |
3329 | } |
3330 | close(fd); |
3331 | |
3332 | return checkDeviceBootloader(boot, bootSect); |
3333 | } |
3334 | |
3335 | int checkForYaboot(struct grubConfig * config) { |
3336 | /* |
3337 | * This is a simplistic check that we consider good enough for own puporses |
3338 | * |
3339 | * If we were to properly check if yaboot is *installed* we'd need to: |
3340 | * 1) get the system boot device (LT_BOOT) |
3341 | * 2) considering it's a raw filesystem, check if the yaboot binary matches |
3342 | * the content on the boot device |
3343 | * 3) if not, copy the binary to a temporary file and run "addnote" on it |
3344 | * 4) check again if binary and boot device contents match |
3345 | */ |
3346 | if (!access("/etc/yaboot.conf", R_OK)) |
3347 | return 2; |
3348 | |
3349 | return 1; |
3350 | } |
3351 | |
3352 | int checkForElilo(struct grubConfig * config) { |
3353 | if (!access("/etc/elilo.conf", R_OK)) |
3354 | return 2; |
3355 | |
3356 | return 1; |
3357 | } |
3358 | |
3359 | static char * getRootSpecifier(char * str) { |
3360 | char * idx, * rootspec = NULL; |
3361 | |
3362 | if (*str == '(') { |
3363 | idx = rootspec = strdup(str); |
3364 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; |
3365 | *(++idx) = '\0'; |
3366 | } |
3367 | return rootspec; |
3368 | } |
3369 | |
3370 | static char * getInitrdVal(struct grubConfig * config, |
3371 | const char * prefix, struct singleLine *tmplLine, |
3372 | const char * newKernelInitrd, |
3373 | const char ** extraInitrds, int extraInitrdCount) |
3374 | { |
3375 | char *initrdVal, *end; |
3376 | int i; |
3377 | size_t totalSize; |
3378 | size_t prefixLen; |
3379 | char separatorChar; |
3380 | |
3381 | prefixLen = strlen(prefix); |
3382 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */; |
3383 | |
3384 | for (i = 0; i < extraInitrdCount; i++) { |
3385 | totalSize += sizeof(separatorChar); |
3386 | totalSize += strlen(extraInitrds[i]) - prefixLen; |
3387 | } |
3388 | |
3389 | initrdVal = end = malloc(totalSize); |
3390 | |
3391 | end = stpcpy (end, newKernelInitrd + prefixLen); |
3392 | |
3393 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; |
3394 | for (i = 0; i < extraInitrdCount; i++) { |
3395 | const char *extraInitrd; |
3396 | int j; |
3397 | |
3398 | extraInitrd = extraInitrds[i] + prefixLen; |
3399 | /* Don't add entries that are already there */ |
3400 | if (tmplLine != NULL) { |
3401 | for (j = 2; j < tmplLine->numElements; j++) |
3402 | if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0) |
3403 | break; |
3404 | |
3405 | if (j != tmplLine->numElements) |
3406 | continue; |
3407 | } |
3408 | |
3409 | *end++ = separatorChar; |
3410 | end = stpcpy(end, extraInitrd); |
3411 | } |
3412 | |
3413 | return initrdVal; |
3414 | } |
3415 | |
3416 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, |
3417 | const char * prefix, |
3418 | const char * newKernelPath, const char * newKernelTitle, |
3419 | const char * newKernelArgs, const char * newKernelInitrd, |
3420 | const char ** extraInitrds, int extraInitrdCount, |
3421 | const char * newMBKernel, const char * newMBKernelArgs) { |
3422 | struct singleEntry * new; |
3423 | struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL; |
3424 | int needs; |
3425 | char * chptr; |
3426 | |
3427 | if (!newKernelPath) return 0; |
3428 | |
3429 | /* if the newKernelTitle is too long silently munge it into something |
3430 | * we can live with. truncating is first check, then we'll just mess with |
3431 | * it until it looks better */ |
3432 | if (config->cfi->maxTitleLength && |
3433 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
3434 | char * buf = alloca(config->cfi->maxTitleLength + 7); |
3435 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); |
3436 | int i = 1; |
3437 | |
3438 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); |
3439 | while (findEntryByPath(config, buf, NULL, NULL)) { |
3440 | sprintf(numBuf, "%d", i++); |
3441 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
3442 | } |
3443 | |
3444 | newKernelTitle = buf + 6; |
3445 | } |
3446 | |
3447 | new = malloc(sizeof(*new)); |
3448 | new->skip = 0; |
3449 | new->multiboot = 0; |
3450 | new->next = config->entries; |
3451 | new->lines = NULL; |
3452 | config->entries = new; |
3453 | |
3454 | /* copy/update from the template */ |
3455 | needs = NEED_KERNEL | NEED_TITLE; |
3456 | if (newKernelInitrd) |
3457 | needs |= NEED_INITRD; |
3458 | if (newMBKernel) { |
3459 | needs |= NEED_MB; |
3460 | new->multiboot = 1; |
3461 | } |
3462 | |
3463 | if (template) { |
3464 | for (masterLine = template->lines; |
3465 | masterLine && (tmplLine = lineDup(masterLine)); |
3466 | lineFree(tmplLine), masterLine = masterLine->next) |
3467 | { |
3468 | dbgPrintf("addNewKernel processing %d\n", tmplLine->type); |
3469 | |
3470 | /* skip comments */ |
3471 | chptr = tmplLine->indent; |
3472 | while (*chptr && isspace(*chptr)) chptr++; |
3473 | if (*chptr == '#') continue; |
3474 | |
3475 | if (iskernel(tmplLine->type) && tmplLine->numElements >= 2) { |
3476 | if (!template->multiboot && (needs & NEED_MB)) { |
3477 | /* it's not a multiboot template and this is the kernel |
3478 | * line. Try to be intelligent about inserting the |
3479 | * hypervisor at the same time. |
3480 | */ |
3481 | if (config->cfi->mbHyperFirst) { |
3482 | /* insert the hypervisor first */ |
3483 | newLine = addLine(new, config->cfi, LT_HYPER, |
3484 | tmplLine->indent, |
3485 | newMBKernel + strlen(prefix)); |
3486 | /* set up for adding the kernel line */ |
3487 | free(tmplLine->indent); |
3488 | tmplLine->indent = strdup(config->secondaryIndent); |
3489 | needs &= ~NEED_MB; |
3490 | } |
3491 | if (needs & NEED_KERNEL) { |
3492 | /* use addLineTmpl to preserve line elements, |
3493 | * otherwise we could just call addLine. Unfortunately |
3494 | * this means making some changes to the template |
3495 | * such as the indent change above and the type |
3496 | * change below. |
3497 | */ |
3498 | struct keywordTypes * mbm_kw = |
3499 | getKeywordByType(LT_MBMODULE, config->cfi); |
3500 | if (mbm_kw) { |
3501 | tmplLine->type = LT_MBMODULE; |
3502 | free(tmplLine->elements[0].item); |
3503 | tmplLine->elements[0].item = strdup(mbm_kw->key); |
3504 | } |
3505 | newLine = addLineTmpl(new, tmplLine, newLine, |
3506 | newKernelPath + strlen(prefix), config->cfi); |
3507 | needs &= ~NEED_KERNEL; |
3508 | } |
3509 | if (needs & NEED_MB) { /* !mbHyperFirst */ |
3510 | newLine = addLine(new, config->cfi, LT_HYPER, |
3511 | config->secondaryIndent, |
3512 | newMBKernel + strlen(prefix)); |
3513 | needs &= ~NEED_MB; |
3514 | } |
3515 | } else if (needs & NEED_KERNEL) { |
3516 | newLine = addLineTmpl(new, tmplLine, newLine, |
3517 | newKernelPath + strlen(prefix), config->cfi); |
3518 | needs &= ~NEED_KERNEL; |
3519 | } |
3520 | |
3521 | } else if (tmplLine->type == LT_HYPER && |
3522 | tmplLine->numElements >= 2) { |
3523 | if (needs & NEED_MB) { |
3524 | newLine = addLineTmpl(new, tmplLine, newLine, |
3525 | newMBKernel + strlen(prefix), config->cfi); |
3526 | needs &= ~NEED_MB; |
3527 | } |
3528 | |
3529 | } else if (tmplLine->type == LT_MBMODULE && |
3530 | tmplLine->numElements >= 2) { |
3531 | if (new->multiboot) { |
3532 | if (needs & NEED_KERNEL) { |
3533 | newLine = addLineTmpl(new, tmplLine, newLine, |
3534 | newKernelPath + |
3535 | strlen(prefix), config->cfi); |
3536 | needs &= ~NEED_KERNEL; |
3537 | } else if (config->cfi->mbInitRdIsModule && |
3538 | (needs & NEED_INITRD)) { |
3539 | char *initrdVal; |
3540 | initrdVal = getInitrdVal(config, prefix, tmplLine, |
3541 | newKernelInitrd, extraInitrds, |
3542 | extraInitrdCount); |
3543 | newLine = addLineTmpl(new, tmplLine, newLine, |
3544 | initrdVal, config->cfi); |
3545 | free(initrdVal); |
3546 | needs &= ~NEED_INITRD; |
3547 | } |
3548 | } else if (needs & NEED_KERNEL) { |
3549 | /* template is multi but new is not, |
3550 | * insert the kernel in the first module slot |
3551 | */ |
3552 | tmplLine->type = preferredLineType(LT_KERNEL, config->cfi); |
3553 | free(tmplLine->elements[0].item); |
3554 | tmplLine->elements[0].item = |
3555 | strdup(getKeywordByType(tmplLine->type, |
3556 | config->cfi)->key); |
3557 | newLine = addLineTmpl(new, tmplLine, newLine, |
3558 | newKernelPath + strlen(prefix), |
3559 | config->cfi); |
3560 | needs &= ~NEED_KERNEL; |
3561 | } else if (needs & NEED_INITRD) { |
3562 | char *initrdVal; |
3563 | /* template is multi but new is not, |
3564 | * insert the initrd in the second module slot |
3565 | */ |
3566 | tmplLine->type = preferredLineType(LT_INITRD, config->cfi); |
3567 | free(tmplLine->elements[0].item); |
3568 | tmplLine->elements[0].item = |
3569 | strdup(getKeywordByType(tmplLine->type, |
3570 | config->cfi)->key); |
3571 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3572 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3573 | free(initrdVal); |
3574 | needs &= ~NEED_INITRD; |
3575 | } |
3576 | |
3577 | } else if (isinitrd(tmplLine->type) && tmplLine->numElements >= 2) { |
3578 | if (needs & NEED_INITRD && |
3579 | new->multiboot && !template->multiboot && |
3580 | config->cfi->mbInitRdIsModule) { |
3581 | /* make sure we don't insert the module initrd |
3582 | * before the module kernel... if we don't do it here, |
3583 | * it will be inserted following the template. |
3584 | */ |
3585 | if (!needs & NEED_KERNEL) { |
3586 | char *initrdVal; |
3587 | |
3588 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3589 | newLine = addLine(new, config->cfi, LT_MBMODULE, |
3590 | config->secondaryIndent, |
3591 | initrdVal); |
3592 | free(initrdVal); |
3593 | needs &= ~NEED_INITRD; |
3594 | } |
3595 | } else if (needs & NEED_INITRD) { |
3596 | char *initrdVal; |
3597 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3598 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3599 | free(initrdVal); |
3600 | needs &= ~NEED_INITRD; |
3601 | } |
3602 | |
3603 | } else if (tmplLine->type == LT_MENUENTRY && |
3604 | (needs & NEED_TITLE)) { |
3605 | requote(tmplLine, config->cfi); |
3606 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3607 | strcpy(nkt, "'"); |
3608 | strcat(nkt, newKernelTitle); |
3609 | strcat(nkt, "'"); |
3610 | newLine = addLineTmpl(new, tmplLine, newLine, nkt, config->cfi); |
3611 | free(nkt); |
3612 | needs &= ~NEED_TITLE; |
3613 | } else if (tmplLine->type == LT_TITLE && |
3614 | (needs & NEED_TITLE)) { |
3615 | if (tmplLine->numElements >= 2) { |
3616 | newLine = addLineTmpl(new, tmplLine, newLine, |
3617 | newKernelTitle, config->cfi); |
3618 | needs &= ~NEED_TITLE; |
3619 | } else if (tmplLine->numElements == 1 && |
3620 | config->cfi->titleBracketed) { |
3621 | /* addLineTmpl doesn't handle titleBracketed */ |
3622 | newLine = addLine(new, config->cfi, LT_TITLE, |
3623 | tmplLine->indent, newKernelTitle); |
3624 | needs &= ~NEED_TITLE; |
3625 | } |
3626 | } else if (tmplLine->type == LT_ECHO) { |
3627 | requote(tmplLine, config->cfi); |
3628 | static const char *prefix = "'Loading "; |
3629 | if (tmplLine->numElements > 1 && |
3630 | strstr(tmplLine->elements[1].item, prefix) && |
3631 | masterLine->next && |
3632 | iskernel(masterLine->next->type)) { |
3633 | char *newTitle = malloc(strlen(prefix) + |
3634 | strlen(newKernelTitle) + 2); |
3635 | |
3636 | strcpy(newTitle, prefix); |
3637 | strcat(newTitle, newKernelTitle); |
3638 | strcat(newTitle, "'"); |
3639 | newLine = addLine(new, config->cfi, LT_ECHO, |
3640 | tmplLine->indent, newTitle); |
3641 | free(newTitle); |
3642 | } else { |
3643 | /* pass through other lines from the template */ |
3644 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, |
3645 | config->cfi); |
3646 | } |
3647 | } else { |
3648 | /* pass through other lines from the template */ |
3649 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); |
3650 | } |
3651 | } |
3652 | |
3653 | } else { |
3654 | /* don't have a template, so start the entry with the |
3655 | * appropriate starting line |
3656 | */ |
3657 | switch (config->cfi->entryStart) { |
3658 | case LT_KERNEL: |
3659 | case LT_KERNEL_EFI: |
3660 | if (new->multiboot && config->cfi->mbHyperFirst) { |
3661 | /* fall through to LT_HYPER */ |
3662 | } else { |
3663 | newLine = addLine(new, config->cfi, |
3664 | preferredLineType(LT_KERNEL, config->cfi), |
3665 | config->primaryIndent, |
3666 | newKernelPath + strlen(prefix)); |
3667 | needs &= ~NEED_KERNEL; |
3668 | break; |
3669 | } |
3670 | |
3671 | case LT_HYPER: |
3672 | newLine = addLine(new, config->cfi, LT_HYPER, |
3673 | config->primaryIndent, |
3674 | newMBKernel + strlen(prefix)); |
3675 | needs &= ~NEED_MB; |
3676 | break; |
3677 | |
3678 | case LT_MENUENTRY: { |
3679 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3680 | strcpy(nkt, "'"); |
3681 | strcat(nkt, newKernelTitle); |
3682 | strcat(nkt, "'"); |
3683 | newLine = addLine(new, config->cfi, LT_MENUENTRY, |
3684 | config->primaryIndent, nkt); |
3685 | free(nkt); |
3686 | needs &= ~NEED_TITLE; |
3687 | needs |= NEED_END; |
3688 | break; |
3689 | } |
3690 | case LT_TITLE: |
3691 | if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above) |
3692 | char * templabel; |
3693 | int x = 0, y = 0; |
3694 | |
3695 | templabel = strdup(newKernelTitle); |
3696 | while( templabel[x]){ |
3697 | if( templabel[x] == ' ' ){ |
3698 | y = x; |
3699 | while( templabel[y] ){ |
3700 | templabel[y] = templabel[y+1]; |
3701 | y++; |
3702 | } |
3703 | } |
3704 | x++; |
3705 | } |
3706 | newLine = addLine(new, config->cfi, LT_TITLE, |
3707 | config->primaryIndent, templabel); |
3708 | free(templabel); |
3709 | }else{ |
3710 | newLine = addLine(new, config->cfi, LT_TITLE, |
3711 | config->primaryIndent, newKernelTitle); |
3712 | } |
3713 | needs &= ~NEED_TITLE; |
3714 | break; |
3715 | |
3716 | default: |
3717 | abort(); |
3718 | } |
3719 | } |
3720 | |
3721 | /* add the remainder of the lines, i.e. those that either |
3722 | * weren't present in the template, or in the case of no template, |
3723 | * all the lines following the entryStart. |
3724 | */ |
3725 | if (needs & NEED_TITLE) { |
3726 | newLine = addLine(new, config->cfi, LT_TITLE, |
3727 | config->secondaryIndent, |
3728 | newKernelTitle); |
3729 | needs &= ~NEED_TITLE; |
3730 | } |
3731 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
3732 | newLine = addLine(new, config->cfi, LT_HYPER, |
3733 | config->secondaryIndent, |
3734 | newMBKernel + strlen(prefix)); |
3735 | needs &= ~NEED_MB; |
3736 | } |
3737 | if (needs & NEED_KERNEL) { |
3738 | newLine = addLine(new, config->cfi, |
3739 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3740 | config->cfi)) |
3741 | ? LT_MBMODULE |
3742 | : preferredLineType(LT_KERNEL, config->cfi), |
3743 | config->secondaryIndent, |
3744 | newKernelPath + strlen(prefix)); |
3745 | needs &= ~NEED_KERNEL; |
3746 | } |
3747 | if (needs & NEED_MB) { |
3748 | newLine = addLine(new, config->cfi, LT_HYPER, |
3749 | config->secondaryIndent, |
3750 | newMBKernel + strlen(prefix)); |
3751 | needs &= ~NEED_MB; |
3752 | } |
3753 | if (needs & NEED_INITRD) { |
3754 | char *initrdVal; |
3755 | initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount); |
3756 | newLine = addLine(new, config->cfi, |
3757 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3758 | config->cfi)) |
3759 | ? LT_MBMODULE |
3760 | : preferredLineType(LT_INITRD, config->cfi), |
3761 | config->secondaryIndent, |
3762 | initrdVal); |
3763 | free(initrdVal); |
3764 | needs &= ~NEED_INITRD; |
3765 | } |
3766 | if (needs & NEED_END) { |
3767 | newLine = addLine(new, config->cfi, LT_ENTRY_END, |
3768 | config->secondaryIndent, NULL); |
3769 | needs &= ~NEED_END; |
3770 | } |
3771 | |
3772 | if (needs) { |
3773 | printf(_("grubby: needs=%d, aborting\n"), needs); |
3774 | abort(); |
3775 | } |
3776 | |
3777 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, |
3778 | newMBKernelArgs, NULL)) return 1; |
3779 | |
3780 | return 0; |
3781 | } |
3782 | |
3783 | static void traceback(int signum) |
3784 | { |
3785 | void *array[40]; |
3786 | size_t size; |
3787 | |
3788 | signal(SIGSEGV, SIG_DFL); |
3789 | memset(array, '\0', sizeof (array)); |
3790 | size = backtrace(array, 40); |
3791 | |
3792 | fprintf(stderr, "grubby received SIGSEGV! Backtrace (%ld):\n", |
3793 | (unsigned long)size); |
3794 | backtrace_symbols_fd(array, size, STDERR_FILENO); |
3795 | exit(1); |
3796 | } |
3797 | |
3798 | int main(int argc, const char ** argv) { |
3799 | poptContext optCon; |
3800 | const char * grubConfig = NULL; |
3801 | char * outputFile = NULL; |
3802 | int arg = 0; |
3803 | int flags = 0; |
3804 | int badImageOkay = 0; |
3805 | int configureGrub2 = 0; |
3806 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
3807 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
3808 | int configureExtLinux = 0; |
3809 | int bootloaderProbe = 0; |
3810 | int extraInitrdCount = 0; |
3811 | char * updateKernelPath = NULL; |
3812 | char * newKernelPath = NULL; |
3813 | char * removeKernelPath = NULL; |
3814 | char * newKernelArgs = NULL; |
3815 | char * newKernelInitrd = NULL; |
3816 | char * newKernelTitle = NULL; |
3817 | char * newKernelVersion = NULL; |
3818 | char * newMBKernel = NULL; |
3819 | char * newMBKernelArgs = NULL; |
3820 | char * removeMBKernelArgs = NULL; |
3821 | char * removeMBKernel = NULL; |
3822 | char * bootPrefix = NULL; |
3823 | char * defaultKernel = NULL; |
3824 | char * removeArgs = NULL; |
3825 | char * kernelInfo = NULL; |
3826 | char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
3827 | const char * chptr = NULL; |
3828 | struct configFileInfo * cfi = NULL; |
3829 | struct grubConfig * config; |
3830 | struct singleEntry * template = NULL; |
3831 | int copyDefault = 0, makeDefault = 0; |
3832 | int displayDefault = 0; |
3833 | int displayDefaultIndex = 0; |
3834 | int displayDefaultTitle = 0; |
3835 | int defaultIndex = -1; |
3836 | struct poptOption options[] = { |
3837 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
3838 | _("add an entry for the specified kernel"), _("kernel-path") }, |
3839 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
3840 | _("add an entry for the specified multiboot kernel"), NULL }, |
3841 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
3842 | _("default arguments for the new kernel or new arguments for " |
3843 | "kernel being updated"), _("args") }, |
3844 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
3845 | _("default arguments for the new multiboot kernel or " |
3846 | "new arguments for multiboot kernel being updated"), NULL }, |
3847 | { "bad-image-okay", 0, 0, &badImageOkay, 0, |
3848 | _("don't sanity check images in boot entries (for testing only)"), |
3849 | NULL }, |
3850 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
3851 | _("filestystem which contains /boot directory (for testing only)"), |
3852 | _("bootfs") }, |
3853 | #if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__) |
3854 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
3855 | _("check which bootloader is installed on boot sector") }, |
3856 | #endif |
3857 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
3858 | _("path to grub config file to update (\"-\" for stdin)"), |
3859 | _("path") }, |
3860 | { "copy-default", 0, 0, ©Default, 0, |
3861 | _("use the default boot entry as a template for the new entry " |
3862 | "being added; if the default is not a linux image, or if " |
3863 | "the kernel referenced by the default image does not exist, " |
3864 | "the first linux entry whose kernel does exist is used as the " |
3865 | "template"), NULL }, |
3866 | { "debug", 0, 0, &debug, 0, |
3867 | _("print debugging information for failures") }, |
3868 | { "default-kernel", 0, 0, &displayDefault, 0, |
3869 | _("display the path of the default kernel") }, |
3870 | { "default-index", 0, 0, &displayDefaultIndex, 0, |
3871 | _("display the index of the default kernel") }, |
3872 | { "default-title", 0, 0, &displayDefaultTitle, 0, |
3873 | _("display the title of the default kernel") }, |
3874 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
3875 | _("configure elilo bootloader") }, |
3876 | { "efi", 0, POPT_ARG_NONE, &isEfi, 0, |
3877 | _("force grub2 stanzas to use efi") }, |
3878 | { "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
3879 | _("configure extlinux bootloader (from syslinux)") }, |
3880 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
3881 | _("configure grub bootloader") }, |
3882 | { "grub2", 0, POPT_ARG_NONE, &configureGrub2, 0, |
3883 | _("configure grub2 bootloader") }, |
3884 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
3885 | _("display boot information for specified kernel"), |
3886 | _("kernel-path") }, |
3887 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
3888 | _("initrd image for the new kernel"), _("initrd-path") }, |
3889 | { "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
3890 | _("auxiliary initrd image for things other than the new kernel"), _("initrd-path") }, |
3891 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
3892 | _("configure lilo bootloader") }, |
3893 | { "make-default", 0, 0, &makeDefault, 0, |
3894 | _("make the newly added entry the default boot entry"), NULL }, |
3895 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
3896 | _("path to output updated config file (\"-\" for stdout)"), |
3897 | _("path") }, |
3898 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
3899 | _("remove kernel arguments"), NULL }, |
3900 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
3901 | _("remove multiboot kernel arguments"), NULL }, |
3902 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
3903 | _("remove all entries for the specified kernel"), |
3904 | _("kernel-path") }, |
3905 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
3906 | _("remove all entries for the specified multiboot kernel"), NULL }, |
3907 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
3908 | _("make the first entry referencing the specified kernel " |
3909 | "the default"), _("kernel-path") }, |
3910 | { "set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0, |
3911 | _("make the given entry index the default entry"), |
3912 | _("entry-index") }, |
3913 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
3914 | _("configure silo bootloader") }, |
3915 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
3916 | _("title to use for the new kernel entry"), _("entry-title") }, |
3917 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
3918 | _("updated information for the specified kernel"), |
3919 | _("kernel-path") }, |
3920 | { "version", 'v', 0, NULL, 'v', |
3921 | _("print the version of this program and exit"), NULL }, |
3922 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
3923 | _("configure yaboot bootloader") }, |
3924 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
3925 | _("configure zipl bootloader") }, |
3926 | POPT_AUTOHELP |
3927 | { 0, 0, 0, 0, 0 } |
3928 | }; |
3929 | |
3930 | useextlinuxmenu=0; |
3931 | |
3932 | signal(SIGSEGV, traceback); |
3933 | |
3934 | int i = 0; |
3935 | for (int j = 1; j < argc; j++) |
3936 | i += strlen(argv[j]) + 1; |
3937 | saved_command_line = malloc(i); |
3938 | if (!saved_command_line) { |
3939 | fprintf(stderr, "grubby: %m\n"); |
3940 | exit(1); |
3941 | } |
3942 | saved_command_line[0] = '\0'; |
3943 | for (int j = 1; j < argc; j++) { |
3944 | strcat(saved_command_line, argv[j]); |
3945 | strncat(saved_command_line, j == argc -1 ? "" : " ", 1); |
3946 | } |
3947 | |
3948 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
3949 | poptReadDefaultConfig(optCon, 1); |
3950 | |
3951 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
3952 | switch (arg) { |
3953 | case 'v': |
3954 | printf("grubby version %s\n", VERSION); |
3955 | exit(0); |
3956 | break; |
3957 | case 'i': |
3958 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { |
3959 | extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon)); |
3960 | } else { |
3961 | fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount); |
3962 | return 1; |
3963 | } |
3964 | break; |
3965 | } |
3966 | } |
3967 | |
3968 | if (arg < -1) { |
3969 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
3970 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
3971 | poptStrerror(arg)); |
3972 | return 1; |
3973 | } |
3974 | |
3975 | if ((chptr = poptGetArg(optCon))) { |
3976 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
3977 | return 1; |
3978 | } |
3979 | |
3980 | if ((configureLilo + configureGrub2 + configureGrub + configureELilo + |
3981 | configureYaboot + configureSilo + configureZipl + |
3982 | configureExtLinux ) > 1) { |
3983 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); |
3984 | return 1; |
3985 | } else if (bootloaderProbe && grubConfig) { |
3986 | fprintf(stderr, |
3987 | _("grubby: cannot specify config file with --bootloader-probe\n")); |
3988 | return 1; |
3989 | } else if (configureGrub2) { |
3990 | cfi = &grub2ConfigType; |
3991 | } else if (configureLilo) { |
3992 | cfi = &liloConfigType; |
3993 | } else if (configureGrub) { |
3994 | cfi = &grubConfigType; |
3995 | } else if (configureELilo) { |
3996 | cfi = &eliloConfigType; |
3997 | } else if (configureYaboot) { |
3998 | cfi = &yabootConfigType; |
3999 | } else if (configureSilo) { |
4000 | cfi = &siloConfigType; |
4001 | } else if (configureZipl) { |
4002 | cfi = &ziplConfigType; |
4003 | } else if (configureExtLinux) { |
4004 | cfi = &extlinuxConfigType; |
4005 | useextlinuxmenu=1; |
4006 | } |
4007 | |
4008 | if (!cfi) { |
4009 | if (grub2FindConfig(&grub2ConfigType)) |
4010 | cfi = &grub2ConfigType; |
4011 | else |
4012 | #ifdef __ia64__ |
4013 | cfi = &eliloConfigType; |
4014 | #elif __powerpc__ |
4015 | cfi = &yabootConfigType; |
4016 | #elif __sparc__ |
4017 | cfi = &siloConfigType; |
4018 | #elif __s390__ |
4019 | cfi = &ziplConfigType; |
4020 | #elif __s390x__ |
4021 | cfi = &ziplConfigtype; |
4022 | #else |
4023 | cfi = &grubConfigType; |
4024 | #endif |
4025 | } |
4026 | |
4027 | if (!grubConfig) { |
4028 | if (cfi->findConfig) |
4029 | grubConfig = cfi->findConfig(cfi); |
4030 | if (!grubConfig) |
4031 | grubConfig = cfi->defaultConfig; |
4032 | } |
4033 | |
4034 | if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion || |
4035 | newKernelPath || removeKernelPath || makeDefault || |
4036 | defaultKernel || displayDefaultIndex || displayDefaultTitle || |
4037 | (defaultIndex >= 0))) { |
4038 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " |
4039 | "specified option")); |
4040 | return 1; |
4041 | } |
4042 | |
4043 | if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath || |
4044 | removeKernelPath)) { |
4045 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
4046 | "be used when adding or removing kernels\n")); |
4047 | return 1; |
4048 | } |
4049 | |
4050 | if (newKernelPath && !newKernelTitle) { |
4051 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
4052 | return 1; |
4053 | } else if (!newKernelPath && (newKernelTitle || copyDefault || |
4054 | (newKernelInitrd && !updateKernelPath)|| |
4055 | makeDefault || extraInitrdCount > 0)) { |
4056 | fprintf(stderr, _("grubby: kernel path expected\n")); |
4057 | return 1; |
4058 | } |
4059 | |
4060 | if (newKernelPath && updateKernelPath) { |
4061 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
4062 | "not be used together")); |
4063 | return 1; |
4064 | } |
4065 | |
4066 | if (makeDefault && defaultKernel) { |
4067 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
4068 | "may not be used together\n")); |
4069 | return 1; |
4070 | } else if (defaultKernel && removeKernelPath && |
4071 | !strcmp(defaultKernel, removeKernelPath)) { |
4072 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); |
4073 | return 1; |
4074 | } else if (defaultKernel && newKernelPath && |
4075 | !strcmp(defaultKernel, newKernelPath)) { |
4076 | makeDefault = 1; |
4077 | defaultKernel = NULL; |
4078 | } |
4079 | else if (defaultKernel && (defaultIndex >= 0)) { |
4080 | fprintf(stderr, _("grubby: --set-default and --set-default-index " |
4081 | "may not be used together\n")); |
4082 | return 1; |
4083 | } |
4084 | |
4085 | if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) { |
4086 | fprintf(stderr, _("grubby: output file must be specified if stdin " |
4087 | "is used\n")); |
4088 | return 1; |
4089 | } |
4090 | |
4091 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel |
4092 | && !kernelInfo && !bootloaderProbe && !updateKernelPath |
4093 | && !removeMBKernel && !displayDefaultIndex && !displayDefaultTitle |
4094 | && (defaultIndex == -1)) { |
4095 | fprintf(stderr, _("grubby: no action specified\n")); |
4096 | return 1; |
4097 | } |
4098 | |
4099 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
4100 | |
4101 | if (cfi->needsBootPrefix) { |
4102 | if (!bootPrefix) { |
4103 | bootPrefix = findBootPrefix(); |
4104 | if (!bootPrefix) return 1; |
4105 | } else { |
4106 | /* this shouldn't end with a / */ |
4107 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
4108 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
4109 | } |
4110 | } else { |
4111 | bootPrefix = ""; |
4112 | } |
4113 | |
4114 | if (!cfi->mbAllowExtraInitRds && |
4115 | extraInitrdCount > 0) { |
4116 | fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig); |
4117 | return 1; |
4118 | } |
4119 | |
4120 | if (bootloaderProbe) { |
4121 | int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0; |
4122 | struct grubConfig * lconfig, * gconfig, * yconfig, * econfig; |
4123 | |
4124 | const char *grub2config = grub2FindConfig(&grub2ConfigType); |
4125 | if (grub2config) { |
4126 | gconfig = readConfig(grub2config, &grub2ConfigType); |
4127 | if (!gconfig) |
4128 | gr2c = 1; |
4129 | else |
4130 | gr2c = checkForGrub2(gconfig); |
4131 | } |
4132 | |
4133 | const char *grubconfig = grubFindConfig(&grubConfigType); |
4134 | if (!access(grubconfig, F_OK)) { |
4135 | gconfig = readConfig(grubconfig, &grubConfigType); |
4136 | if (!gconfig) |
4137 | grc = 1; |
4138 | else |
4139 | grc = checkForGrub(gconfig); |
4140 | } |
4141 | |
4142 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
4143 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); |
4144 | if (!lconfig) |
4145 | lrc = 1; |
4146 | else |
4147 | lrc = checkForLilo(lconfig); |
4148 | } |
4149 | |
4150 | if (!access(eliloConfigType.defaultConfig, F_OK)) { |
4151 | econfig = readConfig(eliloConfigType.defaultConfig, |
4152 | &eliloConfigType); |
4153 | if (!econfig) |
4154 | erc = 1; |
4155 | else |
4156 | erc = checkForElilo(econfig); |
4157 | } |
4158 | |
4159 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
4160 | lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType); |
4161 | if (!lconfig) |
4162 | extrc = 1; |
4163 | else |
4164 | extrc = checkForExtLinux(lconfig); |
4165 | } |
4166 | |
4167 | |
4168 | if (!access(yabootConfigType.defaultConfig, F_OK)) { |
4169 | yconfig = readConfig(yabootConfigType.defaultConfig, |
4170 | &yabootConfigType); |
4171 | if (!yconfig) |
4172 | yrc = 1; |
4173 | else |
4174 | yrc = checkForYaboot(yconfig); |
4175 | } |
4176 | |
4177 | if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1 || |
4178 | erc == 1) |
4179 | return 1; |
4180 | |
4181 | if (lrc == 2) printf("lilo\n"); |
4182 | if (gr2c == 2) printf("grub2\n"); |
4183 | if (grc == 2) printf("grub\n"); |
4184 | if (extrc == 2) printf("extlinux\n"); |
4185 | if (yrc == 2) printf("yaboot\n"); |
4186 | if (erc == 2) printf("elilo\n"); |
4187 | |
4188 | return 0; |
4189 | } |
4190 | |
4191 | config = readConfig(grubConfig, cfi); |
4192 | if (!config) return 1; |
4193 | |
4194 | if (displayDefault) { |
4195 | struct singleLine * line; |
4196 | struct singleEntry * entry; |
4197 | char * rootspec; |
4198 | |
4199 | if (config->defaultImage == -1) return 0; |
4200 | entry = findEntryByIndex(config, config->defaultImage); |
4201 | if (!entry) return 0; |
4202 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; |
4203 | |
4204 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
4205 | if (!line) return 0; |
4206 | |
4207 | rootspec = getRootSpecifier(line->elements[1].item); |
4208 | printf("%s%s\n", bootPrefix, line->elements[1].item + |
4209 | ((rootspec != NULL) ? strlen(rootspec) : 0)); |
4210 | |
4211 | return 0; |
4212 | |
4213 | } else if (displayDefaultTitle) { |
4214 | struct singleLine * line; |
4215 | struct singleEntry * entry; |
4216 | |
4217 | if (config->defaultImage == -1) return 0; |
4218 | entry = findEntryByIndex(config, config->defaultImage); |
4219 | if (!entry) return 0; |
4220 | |
4221 | if (!configureGrub2) { |
4222 | line = getLineByType(LT_TITLE, entry->lines); |
4223 | if (!line) return 0; |
4224 | printf("%s\n", line->elements[1].item); |
4225 | |
4226 | } else { |
4227 | char * title; |
4228 | |
4229 | dbgPrintf("This is GRUB2, default title is embeded in menuentry\n"); |
4230 | line = getLineByType(LT_MENUENTRY, entry->lines); |
4231 | if (!line) return 0; |
4232 | title = grub2ExtractTitle(line); |
4233 | if (title) |
4234 | printf("%s\n", title); |
4235 | } |
4236 | return 0; |
4237 | |
4238 | } else if (displayDefaultIndex) { |
4239 | if (config->defaultImage == -1) return 0; |
4240 | printf("%i\n", config->defaultImage); |
4241 | |
4242 | } else if (kernelInfo) |
4243 | return displayInfo(config, kernelInfo, bootPrefix); |
4244 | |
4245 | if (copyDefault) { |
4246 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
4247 | if (!template) return 1; |
4248 | } |
4249 | |
4250 | markRemovedImage(config, removeKernelPath, bootPrefix); |
4251 | markRemovedImage(config, removeMBKernel, bootPrefix); |
4252 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, |
4253 | bootPrefix, flags, defaultIndex); |
4254 | setFallbackImage(config, newKernelPath != NULL); |
4255 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
4256 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; |
4257 | if (updateKernelPath && newKernelInitrd) { |
4258 | if (updateInitrd(config, updateKernelPath, bootPrefix, |
4259 | newKernelInitrd)) return 1; |
4260 | } |
4261 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
4262 | newKernelTitle, newKernelArgs, newKernelInitrd, |
4263 | (const char **)extraInitrds, extraInitrdCount, |
4264 | newMBKernel, newMBKernelArgs)) return 1; |
4265 | |
4266 | |
4267 | if (numEntries(config) == 0) { |
4268 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " |
4269 | "Not writing out new config.\n")); |
4270 | return 1; |
4271 | } |
4272 | |
4273 | if (!outputFile) |
4274 | outputFile = (char *)grubConfig; |
4275 | |
4276 | return writeConfig(config, outputFile, bootPrefix); |
4277 | } |