Contents of /tags/grubby-8_35/grubby.c
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Mon Oct 21 13:56:22 2013 UTC (10 years, 11 months ago) by niro
Original Path: trunk/grubby/grubby.c
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File size: 119783 byte(s)
Mon Oct 21 13:56:22 2013 UTC (10 years, 11 months ago) by niro
Original Path: trunk/grubby/grubby.c
File MIME type: text/plain
File size: 119783 byte(s)
Don't continue executing after printing the default index.
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 | int rc = -1; |
234 | |
235 | if (i == -1) { |
236 | for (i = 0; configFiles[i] != NULL; i++) { |
237 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
238 | if ((rc = access(configFiles[i], R_OK))) { |
239 | if (errno == EACCES) { |
240 | printf("Unable to access bootloader configuration file " |
241 | "\"%s\": %m\n", configFiles[i]); |
242 | exit(1); |
243 | } |
244 | continue; |
245 | } else { |
246 | dbgPrintf("found\n"); |
247 | return configFiles[i]; |
248 | } |
249 | } |
250 | } |
251 | |
252 | /* Ubuntu renames grub2 to grub, so check for the grub.d directory |
253 | * that isn't in grub1, and if it exists, return the config file path |
254 | * that they use. */ |
255 | if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) { |
256 | dbgPrintf("found\n"); |
257 | return grub_cfg; |
258 | } |
259 | |
260 | dbgPrintf("not found\n"); |
261 | return configFiles[i]; |
262 | } |
263 | |
264 | int sizeOfSingleLine(struct singleLine * line) { |
265 | int count = 0; |
266 | |
267 | for (int i = 0; i < line->numElements; i++) { |
268 | int indentSize = 0; |
269 | |
270 | count = count + strlen(line->elements[i].item); |
271 | |
272 | indentSize = strlen(line->elements[i].indent); |
273 | if (indentSize > 0) |
274 | count = count + indentSize; |
275 | else |
276 | /* be extra safe and add room for whitespaces */ |
277 | count = count + 1; |
278 | } |
279 | |
280 | /* room for trailing terminator */ |
281 | count = count + 1; |
282 | |
283 | return count; |
284 | } |
285 | |
286 | static int isquote(char q) |
287 | { |
288 | if (q == '\'' || q == '\"') |
289 | return 1; |
290 | return 0; |
291 | } |
292 | |
293 | static int iskernel(enum lineType_e type) { |
294 | return (type == LT_KERNEL || type == LT_KERNEL_EFI); |
295 | } |
296 | |
297 | static int isinitrd(enum lineType_e type) { |
298 | return (type == LT_INITRD || type == LT_INITRD_EFI); |
299 | } |
300 | |
301 | char *grub2ExtractTitle(struct singleLine * line) { |
302 | char * current; |
303 | char * current_indent; |
304 | int current_len; |
305 | int current_indent_len; |
306 | int i; |
307 | |
308 | /* bail out if line does not start with menuentry */ |
309 | if (strcmp(line->elements[0].item, "menuentry")) |
310 | return NULL; |
311 | |
312 | i = 1; |
313 | current = line->elements[i].item; |
314 | current_len = strlen(current); |
315 | |
316 | /* if second word is quoted, strip the quotes and return single word */ |
317 | if (isquote(*current) && isquote(current[current_len - 1])) { |
318 | char *tmp; |
319 | |
320 | tmp = strdup(current); |
321 | *(tmp + current_len - 1) = '\0'; |
322 | return ++tmp; |
323 | } |
324 | |
325 | /* if no quotes, return second word verbatim */ |
326 | if (!isquote(*current)) |
327 | return current; |
328 | |
329 | /* second element start with a quote, so we have to find the element |
330 | * whose last character is also quote (assuming it's the closing one) */ |
331 | int resultMaxSize; |
332 | char * result; |
333 | |
334 | resultMaxSize = sizeOfSingleLine(line); |
335 | result = malloc(resultMaxSize); |
336 | snprintf(result, resultMaxSize, "%s", ++current); |
337 | |
338 | i++; |
339 | for (; i < line->numElements; ++i) { |
340 | current = line->elements[i].item; |
341 | current_len = strlen(current); |
342 | current_indent = line->elements[i].indent; |
343 | current_indent_len = strlen(current_indent); |
344 | |
345 | strncat(result, current_indent, current_indent_len); |
346 | if (!isquote(current[current_len-1])) { |
347 | strncat(result, current, current_len); |
348 | } else { |
349 | strncat(result, current, current_len - 1); |
350 | break; |
351 | } |
352 | } |
353 | return result; |
354 | } |
355 | |
356 | struct configFileInfo grub2ConfigType = { |
357 | .findConfig = grub2FindConfig, |
358 | .keywords = grub2Keywords, |
359 | .defaultIsIndex = 1, |
360 | .defaultSupportSaved = 1, |
361 | .defaultIsVariable = 1, |
362 | .entryStart = LT_MENUENTRY, |
363 | .entryEnd = LT_ENTRY_END, |
364 | .titlePosition = 1, |
365 | .needsBootPrefix = 1, |
366 | .mbHyperFirst = 1, |
367 | .mbInitRdIsModule = 1, |
368 | .mbAllowExtraInitRds = 1, |
369 | }; |
370 | |
371 | struct keywordTypes yabootKeywords[] = { |
372 | { "label", LT_TITLE, '=' }, |
373 | { "root", LT_ROOT, '=' }, |
374 | { "default", LT_DEFAULT, '=' }, |
375 | { "image", LT_KERNEL, '=' }, |
376 | { "bsd", LT_GENERIC, '=' }, |
377 | { "macos", LT_GENERIC, '=' }, |
378 | { "macosx", LT_GENERIC, '=' }, |
379 | { "magicboot", LT_GENERIC, '=' }, |
380 | { "darwin", LT_GENERIC, '=' }, |
381 | { "timeout", LT_GENERIC, '=' }, |
382 | { "install", LT_GENERIC, '=' }, |
383 | { "fstype", LT_GENERIC, '=' }, |
384 | { "hfstype", LT_GENERIC, '=' }, |
385 | { "delay", LT_GENERIC, '=' }, |
386 | { "defaultos", LT_GENERIC, '=' }, |
387 | { "init-message", LT_GENERIC, '=' }, |
388 | { "enablecdboot", LT_GENERIC, ' ' }, |
389 | { "enableofboot", LT_GENERIC, ' ' }, |
390 | { "enablenetboot", LT_GENERIC, ' ' }, |
391 | { "nonvram", LT_GENERIC, ' ' }, |
392 | { "hide", LT_GENERIC, ' ' }, |
393 | { "protect", LT_GENERIC, ' ' }, |
394 | { "nobless", LT_GENERIC, ' ' }, |
395 | { "nonvram", LT_GENERIC, ' ' }, |
396 | { "brokenosx", LT_GENERIC, ' ' }, |
397 | { "usemount", LT_GENERIC, ' ' }, |
398 | { "mntpoint", LT_GENERIC, '=' }, |
399 | { "partition", LT_GENERIC, '=' }, |
400 | { "device", LT_GENERIC, '=' }, |
401 | { "fstype", LT_GENERIC, '=' }, |
402 | { "initrd", LT_INITRD, '=', ';' }, |
403 | { "append", LT_KERNELARGS, '=' }, |
404 | { "boot", LT_BOOT, '=' }, |
405 | { "lba", LT_LBA, ' ' }, |
406 | { NULL, 0, 0 }, |
407 | }; |
408 | |
409 | struct keywordTypes liloKeywords[] = { |
410 | { "label", LT_TITLE, '=' }, |
411 | { "root", LT_ROOT, '=' }, |
412 | { "default", LT_DEFAULT, '=' }, |
413 | { "image", LT_KERNEL, '=' }, |
414 | { "other", LT_OTHER, '=' }, |
415 | { "initrd", LT_INITRD, '=' }, |
416 | { "append", LT_KERNELARGS, '=' }, |
417 | { "boot", LT_BOOT, '=' }, |
418 | { "lba", LT_LBA, ' ' }, |
419 | { NULL, 0, 0 }, |
420 | }; |
421 | |
422 | struct keywordTypes eliloKeywords[] = { |
423 | { "label", LT_TITLE, '=' }, |
424 | { "root", LT_ROOT, '=' }, |
425 | { "default", LT_DEFAULT, '=' }, |
426 | { "image", LT_KERNEL, '=' }, |
427 | { "initrd", LT_INITRD, '=' }, |
428 | { "append", LT_KERNELARGS, '=' }, |
429 | { "vmm", LT_HYPER, '=' }, |
430 | { NULL, 0, 0 }, |
431 | }; |
432 | |
433 | struct keywordTypes siloKeywords[] = { |
434 | { "label", LT_TITLE, '=' }, |
435 | { "root", LT_ROOT, '=' }, |
436 | { "default", LT_DEFAULT, '=' }, |
437 | { "image", LT_KERNEL, '=' }, |
438 | { "other", LT_OTHER, '=' }, |
439 | { "initrd", LT_INITRD, '=' }, |
440 | { "append", LT_KERNELARGS, '=' }, |
441 | { "boot", LT_BOOT, '=' }, |
442 | { NULL, 0, 0 }, |
443 | }; |
444 | |
445 | struct keywordTypes ziplKeywords[] = { |
446 | { "target", LT_BOOTROOT, '=' }, |
447 | { "image", LT_KERNEL, '=' }, |
448 | { "ramdisk", LT_INITRD, '=' }, |
449 | { "parameters", LT_KERNELARGS, '=' }, |
450 | { "default", LT_DEFAULT, '=' }, |
451 | { NULL, 0, 0 }, |
452 | }; |
453 | |
454 | struct keywordTypes extlinuxKeywords[] = { |
455 | { "label", LT_TITLE, ' ' }, |
456 | { "root", LT_ROOT, ' ' }, |
457 | { "default", LT_DEFAULT, ' ' }, |
458 | { "kernel", LT_KERNEL, ' ' }, |
459 | { "initrd", LT_INITRD, ' ', ',' }, |
460 | { "append", LT_KERNELARGS, ' ' }, |
461 | { "prompt", LT_UNKNOWN, ' ' }, |
462 | { NULL, 0, 0 }, |
463 | }; |
464 | int useextlinuxmenu; |
465 | struct configFileInfo eliloConfigType = { |
466 | .defaultConfig = "/boot/efi/EFI/redhat/elilo.conf", |
467 | .keywords = eliloKeywords, |
468 | .entryStart = LT_KERNEL, |
469 | .needsBootPrefix = 1, |
470 | .argsInQuotes = 1, |
471 | .mbConcatArgs = 1, |
472 | }; |
473 | |
474 | struct configFileInfo liloConfigType = { |
475 | .defaultConfig = "/etc/lilo.conf", |
476 | .keywords = liloKeywords, |
477 | .entryStart = LT_KERNEL, |
478 | .argsInQuotes = 1, |
479 | .maxTitleLength = 15, |
480 | }; |
481 | |
482 | struct configFileInfo yabootConfigType = { |
483 | .defaultConfig = "/etc/yaboot.conf", |
484 | .keywords = yabootKeywords, |
485 | .entryStart = LT_KERNEL, |
486 | .needsBootPrefix = 1, |
487 | .argsInQuotes = 1, |
488 | .maxTitleLength = 15, |
489 | .mbAllowExtraInitRds = 1, |
490 | }; |
491 | |
492 | struct configFileInfo siloConfigType = { |
493 | .defaultConfig = "/etc/silo.conf", |
494 | .keywords = siloKeywords, |
495 | .entryStart = LT_KERNEL, |
496 | .needsBootPrefix = 1, |
497 | .argsInQuotes = 1, |
498 | .maxTitleLength = 15, |
499 | }; |
500 | |
501 | struct configFileInfo ziplConfigType = { |
502 | .defaultConfig = "/etc/zipl.conf", |
503 | .keywords = ziplKeywords, |
504 | .entryStart = LT_TITLE, |
505 | .argsInQuotes = 1, |
506 | .titleBracketed = 1, |
507 | }; |
508 | |
509 | struct configFileInfo extlinuxConfigType = { |
510 | .defaultConfig = "/boot/extlinux/extlinux.conf", |
511 | .keywords = extlinuxKeywords, |
512 | .caseInsensitive = 1, |
513 | .entryStart = LT_TITLE, |
514 | .needsBootPrefix = 1, |
515 | .maxTitleLength = 255, |
516 | .mbAllowExtraInitRds = 1, |
517 | }; |
518 | |
519 | struct grubConfig { |
520 | struct singleLine * theLines; |
521 | struct singleEntry * entries; |
522 | char * primaryIndent; |
523 | char * secondaryIndent; |
524 | int defaultImage; /* -1 if none specified -- this value is |
525 | * written out, overriding original */ |
526 | int fallbackImage; /* just like defaultImage */ |
527 | int flags; |
528 | struct configFileInfo * cfi; |
529 | }; |
530 | |
531 | blkid_cache blkid; |
532 | |
533 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); |
534 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, |
535 | const char * path, const char * prefix, |
536 | int * index); |
537 | static int readFile(int fd, char ** bufPtr); |
538 | static void lineInit(struct singleLine * line); |
539 | struct singleLine * lineDup(struct singleLine * line); |
540 | static void lineFree(struct singleLine * line); |
541 | static int lineWrite(FILE * out, struct singleLine * line, |
542 | struct configFileInfo * cfi); |
543 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
544 | struct configFileInfo * cfi); |
545 | static char * getRootSpecifier(char * str); |
546 | static void requote(struct singleLine *line, struct configFileInfo * cfi); |
547 | static void insertElement(struct singleLine * line, |
548 | const char * item, int insertHere, |
549 | struct configFileInfo * cfi); |
550 | static void removeElement(struct singleLine * line, int removeHere); |
551 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
552 | struct configFileInfo * cfi); |
553 | static enum lineType_e getTypeByKeyword(char * keyword, |
554 | struct configFileInfo * cfi); |
555 | static struct singleLine * getLineByType(enum lineType_e type, |
556 | struct singleLine * line); |
557 | static int checkForExtLinux(struct grubConfig * config); |
558 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
559 | struct singleLine * tmplLine, |
560 | struct singleLine * prevLine, |
561 | const char * val, |
562 | struct configFileInfo * cfi); |
563 | struct singleLine * addLine(struct singleEntry * entry, |
564 | struct configFileInfo * cfi, |
565 | enum lineType_e type, char * defaultIndent, |
566 | const char * val); |
567 | |
568 | static char * sdupprintf(const char *format, ...) |
569 | #ifdef __GNUC__ |
570 | __attribute__ ((format (printf, 1, 2))); |
571 | #else |
572 | ; |
573 | #endif |
574 | |
575 | static char * sdupprintf(const char *format, ...) { |
576 | char *buf = NULL; |
577 | char c; |
578 | va_list args; |
579 | size_t size = 0; |
580 | va_start(args, format); |
581 | |
582 | /* XXX requires C99 vsnprintf behavior */ |
583 | size = vsnprintf(&c, 1, format, args) + 1; |
584 | if (size == -1) { |
585 | printf("ERROR: vsnprintf behavior is not C99\n"); |
586 | abort(); |
587 | } |
588 | |
589 | va_end(args); |
590 | va_start(args, format); |
591 | |
592 | buf = malloc(size); |
593 | if (buf == NULL) |
594 | return NULL; |
595 | vsnprintf(buf, size, format, args); |
596 | va_end (args); |
597 | |
598 | return buf; |
599 | } |
600 | |
601 | static enum lineType_e preferredLineType(enum lineType_e type, |
602 | struct configFileInfo *cfi) { |
603 | if (isEfi && cfi == &grub2ConfigType) { |
604 | switch (type) { |
605 | case LT_KERNEL: |
606 | return LT_KERNEL_EFI; |
607 | case LT_INITRD: |
608 | return LT_INITRD_EFI; |
609 | default: |
610 | return type; |
611 | } |
612 | } |
613 | return type; |
614 | } |
615 | |
616 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
617 | struct configFileInfo * cfi) { |
618 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
619 | if (kw->type == type) |
620 | return kw; |
621 | } |
622 | return NULL; |
623 | } |
624 | |
625 | static char *getKeyByType(enum lineType_e type, struct configFileInfo * cfi) { |
626 | struct keywordTypes *kt = getKeywordByType(type, cfi); |
627 | if (kt) |
628 | return kt->key; |
629 | return "unknown"; |
630 | } |
631 | |
632 | static char * getpathbyspec(char *device) { |
633 | if (!blkid) |
634 | blkid_get_cache(&blkid, NULL); |
635 | |
636 | return blkid_get_devname(blkid, device, NULL); |
637 | } |
638 | |
639 | static char * getuuidbydev(char *device) { |
640 | if (!blkid) |
641 | blkid_get_cache(&blkid, NULL); |
642 | |
643 | return blkid_get_tag_value(blkid, "UUID", device); |
644 | } |
645 | |
646 | static enum lineType_e getTypeByKeyword(char * keyword, |
647 | struct configFileInfo * cfi) { |
648 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
649 | if (cfi->caseInsensitive) { |
650 | if (!strcasecmp(keyword, kw->key)) |
651 | return kw->type; |
652 | } else { |
653 | if (!strcmp(keyword, kw->key)) |
654 | return kw->type; |
655 | } |
656 | } |
657 | return LT_UNKNOWN; |
658 | } |
659 | |
660 | static struct singleLine * getLineByType(enum lineType_e type, |
661 | struct singleLine * line) { |
662 | dbgPrintf("getLineByType(%d): ", type); |
663 | for (; line; line = line->next) { |
664 | dbgPrintf("%d:%s ", line->type, |
665 | line->numElements ? line->elements[0].item : "(empty)"); |
666 | if (line->type & type) break; |
667 | } |
668 | dbgPrintf(line ? "\n" : " (failed)\n"); |
669 | return line; |
670 | } |
671 | |
672 | static int isBracketedTitle(struct singleLine * line) { |
673 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
674 | int len = strlen(line->elements[0].item); |
675 | if (*(line->elements[0].item + len - 1) == ']') { |
676 | /* FIXME: this is a hack... */ |
677 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
678 | return 1; |
679 | } |
680 | } |
681 | } |
682 | return 0; |
683 | } |
684 | |
685 | static int isEntryStart(struct singleLine * line, |
686 | struct configFileInfo * cfi) { |
687 | return line->type == cfi->entryStart || line->type == LT_OTHER || |
688 | (cfi->titleBracketed && isBracketedTitle(line)); |
689 | } |
690 | |
691 | /* extract the title from within brackets (for zipl) */ |
692 | static char * extractTitle(struct singleLine * line) { |
693 | /* bracketed title... let's extract it (leaks a byte) */ |
694 | char * title; |
695 | title = strdup(line->elements[0].item); |
696 | title++; |
697 | *(title + strlen(title) - 1) = '\0'; |
698 | return title; |
699 | } |
700 | |
701 | static int readFile(int fd, char ** bufPtr) { |
702 | int alloced = 0, size = 0, i = 0; |
703 | char * buf = NULL; |
704 | |
705 | do { |
706 | size += i; |
707 | if ((size + 1024) > alloced) { |
708 | alloced += 4096; |
709 | buf = realloc(buf, alloced + 1); |
710 | } |
711 | } while ((i = read(fd, buf + size, 1024)) > 0); |
712 | |
713 | if (i < 0) { |
714 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); |
715 | free(buf); |
716 | return 1; |
717 | } |
718 | |
719 | buf = realloc(buf, size + 2); |
720 | if (size == 0) |
721 | buf[size++] = '\n'; |
722 | else |
723 | if (buf[size - 1] != '\n') |
724 | buf[size++] = '\n'; |
725 | buf[size] = '\0'; |
726 | |
727 | *bufPtr = buf; |
728 | |
729 | return 0; |
730 | } |
731 | |
732 | static void lineInit(struct singleLine * line) { |
733 | line->indent = NULL; |
734 | line->elements = NULL; |
735 | line->numElements = 0; |
736 | line->next = NULL; |
737 | } |
738 | |
739 | struct singleLine * lineDup(struct singleLine * line) { |
740 | struct singleLine * newLine = malloc(sizeof(*newLine)); |
741 | |
742 | newLine->indent = strdup(line->indent); |
743 | newLine->next = NULL; |
744 | newLine->type = line->type; |
745 | newLine->numElements = line->numElements; |
746 | newLine->elements = malloc(sizeof(*newLine->elements) * |
747 | newLine->numElements); |
748 | |
749 | for (int i = 0; i < newLine->numElements; i++) { |
750 | newLine->elements[i].indent = strdup(line->elements[i].indent); |
751 | newLine->elements[i].item = strdup(line->elements[i].item); |
752 | } |
753 | |
754 | return newLine; |
755 | } |
756 | |
757 | static void lineFree(struct singleLine * line) { |
758 | if (line->indent) free(line->indent); |
759 | |
760 | for (int i = 0; i < line->numElements; i++) { |
761 | free(line->elements[i].item); |
762 | free(line->elements[i].indent); |
763 | } |
764 | |
765 | if (line->elements) free(line->elements); |
766 | lineInit(line); |
767 | } |
768 | |
769 | static int lineWrite(FILE * out, struct singleLine * line, |
770 | struct configFileInfo * cfi) { |
771 | if (fprintf(out, "%s", line->indent) == -1) return -1; |
772 | |
773 | for (int i = 0; i < line->numElements; i++) { |
774 | /* Need to handle this, because we strip the quotes from |
775 | * menuentry when read it. */ |
776 | if (line->type == LT_MENUENTRY && i == 1) { |
777 | if(!isquote(*line->elements[i].item)) |
778 | fprintf(out, "\'%s\'", line->elements[i].item); |
779 | else |
780 | fprintf(out, "%s", line->elements[i].item); |
781 | fprintf(out, "%s", line->elements[i].indent); |
782 | |
783 | continue; |
784 | } |
785 | |
786 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
787 | if (fputc('"', out) == EOF) return -1; |
788 | |
789 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; |
790 | if (i < line->numElements - 1) |
791 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; |
792 | } |
793 | |
794 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
795 | if (fputc('"', out) == EOF) return -1; |
796 | |
797 | if (fprintf(out, "\n") == -1) return -1; |
798 | |
799 | return 0; |
800 | } |
801 | |
802 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
803 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
804 | struct configFileInfo * cfi) { |
805 | char * end; |
806 | char * start = *bufPtr; |
807 | char * chptr; |
808 | int elementsAlloced = 0; |
809 | struct lineElement * element; |
810 | int first = 1; |
811 | |
812 | lineFree(line); |
813 | |
814 | end = strchr(start, '\n'); |
815 | *end = '\0'; |
816 | *bufPtr = end + 1; |
817 | |
818 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
819 | |
820 | line->indent = strndup(start, chptr - start); |
821 | start = chptr; |
822 | |
823 | while (start < end) { |
824 | /* we know !isspace(*start) */ |
825 | |
826 | if (elementsAlloced == line->numElements) { |
827 | elementsAlloced += 5; |
828 | line->elements = realloc(line->elements, |
829 | sizeof(*line->elements) * elementsAlloced); |
830 | } |
831 | |
832 | element = line->elements + line->numElements; |
833 | |
834 | chptr = start; |
835 | while (*chptr && !isspace(*chptr)) { |
836 | if (first && *chptr == '=') break; |
837 | chptr++; |
838 | } |
839 | element->item = strndup(start, chptr - start); |
840 | start = chptr; |
841 | |
842 | /* lilo actually accepts the pathological case of append = " foo " */ |
843 | if (*start == '=') |
844 | chptr = start + 1; |
845 | else |
846 | chptr = start; |
847 | |
848 | do { |
849 | for (; *chptr && isspace(*chptr); chptr++); |
850 | if (*chptr == '=') |
851 | chptr = chptr + 1; |
852 | } while (isspace(*chptr)); |
853 | |
854 | element->indent = strndup(start, chptr - start); |
855 | start = chptr; |
856 | |
857 | line->numElements++; |
858 | first = 0; |
859 | } |
860 | |
861 | if (!line->numElements) |
862 | line->type = LT_WHITESPACE; |
863 | else { |
864 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
865 | if (line->type == LT_UNKNOWN) { |
866 | /* zipl does [title] instead of something reasonable like all |
867 | * the other boot loaders. kind of ugly */ |
868 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
869 | line->type = LT_TITLE; |
870 | } |
871 | |
872 | /* this is awkward, but we need to be able to handle keywords |
873 | that begin with a # (specifically for #boot in grub.conf), |
874 | but still make comments lines with no elements (everything |
875 | stored in the indent */ |
876 | if (*line->elements[0].item == '#') { |
877 | char * fullLine; |
878 | int len; |
879 | |
880 | len = strlen(line->indent); |
881 | for (int i = 0; i < line->numElements; i++) |
882 | len += strlen(line->elements[i].item) + |
883 | strlen(line->elements[i].indent); |
884 | |
885 | fullLine = malloc(len + 1); |
886 | strcpy(fullLine, line->indent); |
887 | free(line->indent); |
888 | line->indent = fullLine; |
889 | |
890 | for (int i = 0; i < line->numElements; i++) { |
891 | strcat(fullLine, line->elements[i].item); |
892 | strcat(fullLine, line->elements[i].indent); |
893 | free(line->elements[i].item); |
894 | free(line->elements[i].indent); |
895 | } |
896 | |
897 | line->type = LT_WHITESPACE; |
898 | line->numElements = 0; |
899 | } |
900 | } else { |
901 | struct keywordTypes *kw; |
902 | |
903 | kw = getKeywordByType(line->type, cfi); |
904 | |
905 | /* space isn't the only separator, we need to split |
906 | * elements up more |
907 | */ |
908 | if (!isspace(kw->separatorChar)) { |
909 | char indent[2] = ""; |
910 | indent[0] = kw->separatorChar; |
911 | for (int i = 1; i < line->numElements; i++) { |
912 | char *p; |
913 | int numNewElements; |
914 | |
915 | numNewElements = 0; |
916 | p = line->elements[i].item; |
917 | while (*p != '\0') { |
918 | if (*p == kw->separatorChar) |
919 | numNewElements++; |
920 | p++; |
921 | } |
922 | if (line->numElements + numNewElements >= elementsAlloced) { |
923 | elementsAlloced += numNewElements + 5; |
924 | line->elements = realloc(line->elements, |
925 | sizeof(*line->elements) * elementsAlloced); |
926 | } |
927 | |
928 | for (int j = line->numElements; j > i; j--) { |
929 | line->elements[j + numNewElements] = line->elements[j]; |
930 | } |
931 | line->numElements += numNewElements; |
932 | |
933 | p = line->elements[i].item; |
934 | while (*p != '\0') { |
935 | |
936 | while (*p != kw->separatorChar && *p != '\0') p++; |
937 | if (*p == '\0') { |
938 | break; |
939 | } |
940 | |
941 | line->elements[i + 1].indent = line->elements[i].indent; |
942 | line->elements[i].indent = strdup(indent); |
943 | *p++ = '\0'; |
944 | i++; |
945 | line->elements[i].item = strdup(p); |
946 | } |
947 | } |
948 | } |
949 | } |
950 | } |
951 | |
952 | return 0; |
953 | } |
954 | |
955 | static struct grubConfig * readConfig(const char * inName, |
956 | struct configFileInfo * cfi) { |
957 | int in; |
958 | char * incoming = NULL, * head; |
959 | int rc; |
960 | int sawEntry = 0; |
961 | int movedLine = 0; |
962 | struct grubConfig * cfg; |
963 | struct singleLine * last = NULL, * line, * defaultLine = NULL; |
964 | char * end; |
965 | struct singleEntry * entry = NULL; |
966 | int len; |
967 | char * buf; |
968 | |
969 | if (inName == NULL) { |
970 | printf("Could not find bootloader configuration\n"); |
971 | exit(1); |
972 | } else if (!strcmp(inName, "-")) { |
973 | in = 0; |
974 | } else { |
975 | if ((in = open(inName, O_RDONLY)) < 0) { |
976 | fprintf(stderr, _("error opening %s for read: %s\n"), |
977 | inName, strerror(errno)); |
978 | return NULL; |
979 | } |
980 | } |
981 | |
982 | rc = readFile(in, &incoming); |
983 | close(in); |
984 | if (rc) return NULL; |
985 | |
986 | head = incoming; |
987 | cfg = malloc(sizeof(*cfg)); |
988 | cfg->primaryIndent = strdup(""); |
989 | cfg->secondaryIndent = strdup("\t"); |
990 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
991 | cfg->cfi = cfi; |
992 | cfg->theLines = NULL; |
993 | cfg->entries = NULL; |
994 | cfg->fallbackImage = 0; |
995 | |
996 | /* copy everything we have */ |
997 | while (*head) { |
998 | line = malloc(sizeof(*line)); |
999 | lineInit(line); |
1000 | |
1001 | if (getNextLine(&head, line, cfi)) { |
1002 | free(line); |
1003 | /* XXX memory leak of everything in cfg */ |
1004 | return NULL; |
1005 | } |
1006 | |
1007 | if (!sawEntry && line->numElements) { |
1008 | free(cfg->primaryIndent); |
1009 | cfg->primaryIndent = strdup(line->indent); |
1010 | } else if (line->numElements) { |
1011 | free(cfg->secondaryIndent); |
1012 | cfg->secondaryIndent = strdup(line->indent); |
1013 | } |
1014 | |
1015 | if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) { |
1016 | sawEntry = 1; |
1017 | if (!entry) { |
1018 | cfg->entries = malloc(sizeof(*entry)); |
1019 | entry = cfg->entries; |
1020 | } else { |
1021 | entry->next = malloc(sizeof(*entry)); |
1022 | entry = entry->next; |
1023 | } |
1024 | |
1025 | entry->skip = 0; |
1026 | entry->multiboot = 0; |
1027 | entry->lines = NULL; |
1028 | entry->next = NULL; |
1029 | } |
1030 | |
1031 | if (line->type == LT_SET_VARIABLE) { |
1032 | dbgPrintf("found 'set' command (%d elements): ", line->numElements); |
1033 | dbgPrintf("%s", line->indent); |
1034 | for (int i = 0; i < line->numElements; i++) |
1035 | dbgPrintf("\"%s\"%s", line->elements[i].item, line->elements[i].indent); |
1036 | dbgPrintf("\n"); |
1037 | struct keywordTypes *kwType = getKeywordByType(LT_DEFAULT, cfi); |
1038 | if (kwType && line->numElements == 3 && |
1039 | !strcmp(line->elements[1].item, kwType->key)) { |
1040 | dbgPrintf("Line sets default config\n"); |
1041 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1042 | defaultLine = line; |
1043 | } |
1044 | } else if (line->type == LT_DEFAULT && line->numElements == 2) { |
1045 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1046 | defaultLine = line; |
1047 | |
1048 | } else if (iskernel(line->type)) { |
1049 | /* if by some freak chance this is multiboot and the "module" |
1050 | * lines came earlier in the template, make sure to use LT_HYPER |
1051 | * instead of LT_KERNEL now |
1052 | */ |
1053 | if (entry->multiboot) |
1054 | line->type = LT_HYPER; |
1055 | |
1056 | } else if (line->type == LT_MBMODULE) { |
1057 | /* go back and fix the LT_KERNEL line to indicate LT_HYPER |
1058 | * instead, now that we know this is a multiboot entry. |
1059 | * This only applies to grub, but that's the only place we |
1060 | * should find LT_MBMODULE lines anyway. |
1061 | */ |
1062 | for (struct singleLine *l = entry->lines; l; l = l->next) { |
1063 | if (l->type == LT_HYPER) |
1064 | break; |
1065 | else if (iskernel(l->type)) { |
1066 | l->type = LT_HYPER; |
1067 | break; |
1068 | } |
1069 | } |
1070 | entry->multiboot = 1; |
1071 | |
1072 | } else if (line->type == LT_HYPER) { |
1073 | entry->multiboot = 1; |
1074 | |
1075 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
1076 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); |
1077 | if (*end) cfg->fallbackImage = -1; |
1078 | |
1079 | } else if (line->type == LT_TITLE && line->numElements > 1) { |
1080 | /* make the title a single argument (undoing our parsing) */ |
1081 | len = 0; |
1082 | for (int i = 1; i < line->numElements; i++) { |
1083 | len += strlen(line->elements[i].item); |
1084 | len += strlen(line->elements[i].indent); |
1085 | } |
1086 | buf = malloc(len + 1); |
1087 | *buf = '\0'; |
1088 | |
1089 | for (int i = 1; i < line->numElements; i++) { |
1090 | strcat(buf, line->elements[i].item); |
1091 | free(line->elements[i].item); |
1092 | |
1093 | if ((i + 1) != line->numElements) { |
1094 | strcat(buf, line->elements[i].indent); |
1095 | free(line->elements[i].indent); |
1096 | } |
1097 | } |
1098 | |
1099 | line->elements[1].indent = |
1100 | line->elements[line->numElements - 1].indent; |
1101 | line->elements[1].item = buf; |
1102 | line->numElements = 2; |
1103 | } else if (line->type == LT_MENUENTRY && line->numElements > 3) { |
1104 | /* let --remove-kernel="TITLE=what" work */ |
1105 | len = 0; |
1106 | char *extras; |
1107 | char *title; |
1108 | |
1109 | for (int i = 1; i < line->numElements; i++) { |
1110 | len += strlen(line->elements[i].item); |
1111 | len += strlen(line->elements[i].indent); |
1112 | } |
1113 | buf = malloc(len + 1); |
1114 | *buf = '\0'; |
1115 | |
1116 | /* allocate mem for extra flags. */ |
1117 | extras = malloc(len + 1); |
1118 | *extras = '\0'; |
1119 | |
1120 | /* get title. */ |
1121 | for (int i = 0; i < line->numElements; i++) { |
1122 | if (!strcmp(line->elements[i].item, "menuentry")) |
1123 | continue; |
1124 | if (isquote(*line->elements[i].item)) |
1125 | title = line->elements[i].item + 1; |
1126 | else |
1127 | title = line->elements[i].item; |
1128 | |
1129 | len = strlen(title); |
1130 | if (isquote(title[len-1])) { |
1131 | strncat(buf, title,len-1); |
1132 | break; |
1133 | } else { |
1134 | strcat(buf, title); |
1135 | strcat(buf, line->elements[i].indent); |
1136 | } |
1137 | } |
1138 | |
1139 | /* get extras */ |
1140 | int count = 0; |
1141 | for (int i = 0; i < line->numElements; i++) { |
1142 | if (count >= 2) { |
1143 | strcat(extras, line->elements[i].item); |
1144 | strcat(extras, line->elements[i].indent); |
1145 | } |
1146 | |
1147 | if (!strcmp(line->elements[i].item, "menuentry")) |
1148 | continue; |
1149 | |
1150 | /* count ' or ", there should be two in menuentry line. */ |
1151 | if (isquote(*line->elements[i].item)) |
1152 | count++; |
1153 | |
1154 | len = strlen(line->elements[i].item); |
1155 | |
1156 | if (isquote(line->elements[i].item[len -1])) |
1157 | count++; |
1158 | |
1159 | /* ok, we get the final ' or ", others are extras. */ |
1160 | } |
1161 | line->elements[1].indent = |
1162 | line->elements[line->numElements - 2].indent; |
1163 | line->elements[1].item = buf; |
1164 | line->elements[2].indent = |
1165 | line->elements[line->numElements - 2].indent; |
1166 | line->elements[2].item = extras; |
1167 | line->numElements = 3; |
1168 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
1169 | /* Strip off any " which may be present; they'll be put back |
1170 | on write. This is one of the few (the only?) places that grubby |
1171 | canonicalizes the output */ |
1172 | |
1173 | if (line->numElements >= 2) { |
1174 | int last, len; |
1175 | |
1176 | if (isquote(*line->elements[1].item)) |
1177 | memmove(line->elements[1].item, line->elements[1].item + 1, |
1178 | strlen(line->elements[1].item + 1) + 1); |
1179 | |
1180 | last = line->numElements - 1; |
1181 | len = strlen(line->elements[last].item) - 1; |
1182 | if (isquote(line->elements[last].item[len])) |
1183 | line->elements[last].item[len] = '\0'; |
1184 | } |
1185 | } |
1186 | |
1187 | /* If we find a generic config option which should live at the |
1188 | top of the file, move it there. Old versions of grubby were |
1189 | probably responsible for putting new images in the wrong |
1190 | place in front of it anyway. */ |
1191 | if (sawEntry && line->type == LT_GENERIC) { |
1192 | struct singleLine **l = &cfg->theLines; |
1193 | struct singleLine **last_nonws = &cfg->theLines; |
1194 | while (*l) { |
1195 | if ((*l)->type != LT_WHITESPACE) |
1196 | last_nonws = &((*l)->next); |
1197 | l = &((*l)->next); |
1198 | } |
1199 | line->next = *last_nonws; |
1200 | *last_nonws = line; |
1201 | movedLine = 1; |
1202 | continue; /* without setting 'last' */ |
1203 | } |
1204 | |
1205 | /* If a second line of whitespace happens after a generic option |
1206 | which was moved, drop it. */ |
1207 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { |
1208 | lineFree(line); |
1209 | free(line); |
1210 | movedLine = 0; |
1211 | continue; |
1212 | } |
1213 | movedLine = 0; |
1214 | |
1215 | if (sawEntry) { |
1216 | if (!entry->lines) |
1217 | entry->lines = line; |
1218 | else |
1219 | last->next = line; |
1220 | dbgPrintf("readConfig added %s to %p\n", getKeyByType(line->type, cfi), entry); |
1221 | |
1222 | /* we could have seen this outside of an entry... if so, we |
1223 | * ignore it like any other line we don't grok */ |
1224 | if (line->type == LT_ENTRY_END && sawEntry) |
1225 | sawEntry = 0; |
1226 | } else { |
1227 | if (!cfg->theLines) |
1228 | cfg->theLines = line; |
1229 | else |
1230 | last->next = line; |
1231 | dbgPrintf("readConfig added %s to cfg\n", getKeyByType(line->type, cfi)); |
1232 | } |
1233 | |
1234 | last = line; |
1235 | } |
1236 | |
1237 | free(incoming); |
1238 | |
1239 | dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset"); |
1240 | if (defaultLine) { |
1241 | if (defaultLine->numElements > 2 && |
1242 | cfi->defaultSupportSaved && |
1243 | !strncmp(defaultLine->elements[2].item,"\"${saved_entry}\"", 16)) { |
1244 | cfg->defaultImage = DEFAULT_SAVED_GRUB2; |
1245 | } else if (cfi->defaultIsVariable) { |
1246 | char *value = defaultLine->elements[2].item; |
1247 | while (*value && (*value == '"' || *value == '\'' || |
1248 | *value == ' ' || *value == '\t')) |
1249 | value++; |
1250 | cfg->defaultImage = strtol(value, &end, 10); |
1251 | while (*end && (*end == '"' || *end == '\'' || |
1252 | *end == ' ' || *end == '\t')) |
1253 | end++; |
1254 | if (*end) cfg->defaultImage = -1; |
1255 | } else if (cfi->defaultSupportSaved && |
1256 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { |
1257 | cfg->defaultImage = DEFAULT_SAVED; |
1258 | } else if (cfi->defaultIsIndex) { |
1259 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); |
1260 | if (*end) cfg->defaultImage = -1; |
1261 | } else if (defaultLine->numElements >= 2) { |
1262 | int i = 0; |
1263 | while ((entry = findEntryByIndex(cfg, i))) { |
1264 | for (line = entry->lines; line; line = line->next) |
1265 | if (line->type == LT_TITLE) break; |
1266 | |
1267 | if (!cfi->titleBracketed) { |
1268 | if (line && (line->numElements >= 2) && |
1269 | !strcmp(defaultLine->elements[1].item, |
1270 | line->elements[1].item)) break; |
1271 | } else if (line) { |
1272 | if (!strcmp(defaultLine->elements[1].item, |
1273 | extractTitle(line))) break; |
1274 | } |
1275 | i++; |
1276 | entry = NULL; |
1277 | } |
1278 | |
1279 | if (entry){ |
1280 | cfg->defaultImage = i; |
1281 | }else{ |
1282 | cfg->defaultImage = -1; |
1283 | } |
1284 | } |
1285 | } else { |
1286 | cfg->defaultImage = 0; |
1287 | } |
1288 | |
1289 | return cfg; |
1290 | } |
1291 | |
1292 | static void writeDefault(FILE * out, char * indent, |
1293 | char * separator, struct grubConfig * cfg) { |
1294 | struct singleEntry * entry; |
1295 | struct singleLine * line; |
1296 | int i; |
1297 | |
1298 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; |
1299 | |
1300 | if (cfg->defaultImage == DEFAULT_SAVED) |
1301 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
1302 | else if (cfg->defaultImage == DEFAULT_SAVED_GRUB2) |
1303 | fprintf(out, "%sset default=\"${saved_entry}\"\n", indent); |
1304 | else if (cfg->defaultImage > -1) { |
1305 | if (cfg->cfi->defaultIsIndex) { |
1306 | if (cfg->cfi->defaultIsVariable) { |
1307 | fprintf(out, "%sset default=\"%d\"\n", indent, |
1308 | cfg->defaultImage); |
1309 | } else { |
1310 | fprintf(out, "%sdefault%s%d\n", indent, separator, |
1311 | cfg->defaultImage); |
1312 | } |
1313 | } else { |
1314 | int image = cfg->defaultImage; |
1315 | |
1316 | entry = cfg->entries; |
1317 | while (entry && entry->skip) entry = entry->next; |
1318 | |
1319 | i = 0; |
1320 | while (entry && i < image) { |
1321 | entry = entry->next; |
1322 | |
1323 | while (entry && entry->skip) entry = entry->next; |
1324 | i++; |
1325 | } |
1326 | |
1327 | if (!entry) return; |
1328 | |
1329 | line = getLineByType(LT_TITLE, entry->lines); |
1330 | |
1331 | if (line && line->numElements >= 2) |
1332 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1333 | line->elements[1].item); |
1334 | else if (line && (line->numElements == 1) && |
1335 | cfg->cfi->titleBracketed) { |
1336 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1337 | extractTitle(line)); |
1338 | } |
1339 | } |
1340 | } |
1341 | } |
1342 | |
1343 | static int writeConfig(struct grubConfig * cfg, char * outName, |
1344 | const char * prefix) { |
1345 | FILE * out; |
1346 | struct singleLine * line; |
1347 | struct singleEntry * entry; |
1348 | char * tmpOutName; |
1349 | int needs = MAIN_DEFAULT; |
1350 | struct stat sb; |
1351 | int i; |
1352 | |
1353 | if (!strcmp(outName, "-")) { |
1354 | out = stdout; |
1355 | tmpOutName = NULL; |
1356 | } else { |
1357 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
1358 | char * buf; |
1359 | int len = 256; |
1360 | int rc; |
1361 | |
1362 | /* most likely the symlink is relative, so change our |
1363 | directory to the dir of the symlink */ |
1364 | char *dir = strdupa(outName); |
1365 | rc = chdir(dirname(dir)); |
1366 | do { |
1367 | buf = alloca(len + 1); |
1368 | rc = readlink(basename(outName), buf, len); |
1369 | if (rc == len) len += 256; |
1370 | } while (rc == len); |
1371 | |
1372 | if (rc < 0) { |
1373 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), |
1374 | outName, strerror(errno)); |
1375 | return 1; |
1376 | } |
1377 | |
1378 | outName = buf; |
1379 | outName[rc] = '\0'; |
1380 | } |
1381 | |
1382 | tmpOutName = alloca(strlen(outName) + 2); |
1383 | sprintf(tmpOutName, "%s-", outName); |
1384 | out = fopen(tmpOutName, "w"); |
1385 | if (!out) { |
1386 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, |
1387 | strerror(errno)); |
1388 | return 1; |
1389 | } |
1390 | |
1391 | if (!stat(outName, &sb)) { |
1392 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
1393 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), |
1394 | tmpOutName, strerror(errno)); |
1395 | fclose(out); |
1396 | unlink(tmpOutName); |
1397 | return 1; |
1398 | } |
1399 | } |
1400 | } |
1401 | |
1402 | line = cfg->theLines; |
1403 | struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi); |
1404 | while (line) { |
1405 | if (line->type == LT_SET_VARIABLE && defaultKw && |
1406 | line->numElements == 3 && |
1407 | !strcmp(line->elements[1].item, defaultKw->key)) { |
1408 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1409 | needs &= ~MAIN_DEFAULT; |
1410 | } else if (line->type == LT_DEFAULT) { |
1411 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1412 | needs &= ~MAIN_DEFAULT; |
1413 | } else if (line->type == LT_FALLBACK) { |
1414 | if (cfg->fallbackImage > -1) |
1415 | fprintf(out, "%s%s%s%d\n", line->indent, |
1416 | line->elements[0].item, line->elements[0].indent, |
1417 | cfg->fallbackImage); |
1418 | } else { |
1419 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1420 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1421 | tmpOutName, strerror(errno)); |
1422 | fclose(out); |
1423 | unlink(tmpOutName); |
1424 | return 1; |
1425 | } |
1426 | } |
1427 | |
1428 | line = line->next; |
1429 | } |
1430 | |
1431 | if (needs & MAIN_DEFAULT) { |
1432 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
1433 | needs &= ~MAIN_DEFAULT; |
1434 | } |
1435 | |
1436 | i = 0; |
1437 | while ((entry = findEntryByIndex(cfg, i++))) { |
1438 | if (entry->skip) continue; |
1439 | |
1440 | line = entry->lines; |
1441 | while (line) { |
1442 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1443 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1444 | tmpOutName, strerror(errno)); |
1445 | fclose(out); |
1446 | unlink(tmpOutName); |
1447 | return 1; |
1448 | } |
1449 | line = line->next; |
1450 | } |
1451 | } |
1452 | |
1453 | if (tmpOutName) { |
1454 | if (rename(tmpOutName, outName)) { |
1455 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), |
1456 | tmpOutName, outName, strerror(errno)); |
1457 | unlink(outName); |
1458 | return 1; |
1459 | } |
1460 | } |
1461 | |
1462 | return 0; |
1463 | } |
1464 | |
1465 | static int numEntries(struct grubConfig *cfg) { |
1466 | int i = 0; |
1467 | struct singleEntry * entry; |
1468 | |
1469 | entry = cfg->entries; |
1470 | while (entry) { |
1471 | if (!entry->skip) |
1472 | i++; |
1473 | entry = entry->next; |
1474 | } |
1475 | return i; |
1476 | } |
1477 | |
1478 | static char *findDiskForRoot() |
1479 | { |
1480 | int fd; |
1481 | char buf[65536]; |
1482 | char *devname; |
1483 | char *chptr; |
1484 | int rc; |
1485 | |
1486 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { |
1487 | fprintf(stderr, "grubby: failed to open %s: %s\n", |
1488 | _PATH_MOUNTED, strerror(errno)); |
1489 | return NULL; |
1490 | } |
1491 | |
1492 | rc = read(fd, buf, sizeof(buf) - 1); |
1493 | if (rc <= 0) { |
1494 | fprintf(stderr, "grubby: failed to read %s: %s\n", |
1495 | _PATH_MOUNTED, strerror(errno)); |
1496 | close(fd); |
1497 | return NULL; |
1498 | } |
1499 | close(fd); |
1500 | buf[rc] = '\0'; |
1501 | chptr = buf; |
1502 | |
1503 | char *foundanswer = NULL; |
1504 | |
1505 | while (chptr && chptr != buf+rc) { |
1506 | devname = chptr; |
1507 | |
1508 | /* |
1509 | * The first column of a mtab entry is the device, but if the entry is a |
1510 | * special device it won't start with /, so move on to the next line. |
1511 | */ |
1512 | if (*devname != '/') { |
1513 | chptr = strchr(chptr, '\n'); |
1514 | if (chptr) |
1515 | chptr++; |
1516 | continue; |
1517 | } |
1518 | |
1519 | /* Seek to the next space */ |
1520 | chptr = strchr(chptr, ' '); |
1521 | if (!chptr) { |
1522 | fprintf(stderr, "grubby: error parsing %s: %s\n", |
1523 | _PATH_MOUNTED, strerror(errno)); |
1524 | return NULL; |
1525 | } |
1526 | |
1527 | /* |
1528 | * The second column of a mtab entry is the mount point, we are looking |
1529 | * for '/' obviously. |
1530 | */ |
1531 | if (*(++chptr) == '/' && *(++chptr) == ' ') { |
1532 | /* remember the last / entry in mtab */ |
1533 | foundanswer = devname; |
1534 | } |
1535 | |
1536 | /* Next line */ |
1537 | chptr = strchr(chptr, '\n'); |
1538 | if (chptr) |
1539 | chptr++; |
1540 | } |
1541 | |
1542 | /* Return the last / entry found */ |
1543 | if (foundanswer) { |
1544 | chptr = strchr(foundanswer, ' '); |
1545 | *chptr = '\0'; |
1546 | return strdup(foundanswer); |
1547 | } |
1548 | |
1549 | return NULL; |
1550 | } |
1551 | |
1552 | void printEntry(struct singleEntry * entry, FILE *f) { |
1553 | int i; |
1554 | struct singleLine * line; |
1555 | |
1556 | for (line = entry->lines; line; line = line->next) { |
1557 | log_message(f, "DBG: %s", line->indent); |
1558 | for (i = 0; i < line->numElements; i++) { |
1559 | /* Need to handle this, because we strip the quotes from |
1560 | * menuentry when read it. */ |
1561 | if (line->type == LT_MENUENTRY && i == 1) { |
1562 | if(!isquote(*line->elements[i].item)) |
1563 | log_message(f, "\'%s\'", line->elements[i].item); |
1564 | else |
1565 | log_message(f, "%s", line->elements[i].item); |
1566 | log_message(f, "%s", line->elements[i].indent); |
1567 | |
1568 | continue; |
1569 | } |
1570 | |
1571 | log_message(f, "%s%s", |
1572 | line->elements[i].item, line->elements[i].indent); |
1573 | } |
1574 | log_message(f, "\n"); |
1575 | } |
1576 | } |
1577 | |
1578 | void notSuitablePrintf(struct singleEntry * entry, int okay, const char *fmt, ...) |
1579 | { |
1580 | static int once; |
1581 | va_list argp, argq; |
1582 | |
1583 | va_start(argp, fmt); |
1584 | |
1585 | va_copy(argq, argp); |
1586 | if (!once) { |
1587 | log_time(NULL); |
1588 | log_message(NULL, "command line: %s\n", saved_command_line); |
1589 | } |
1590 | log_message(NULL, "DBG: Image entry %s: ", okay ? "succeeded" : "failed"); |
1591 | log_vmessage(NULL, fmt, argq); |
1592 | |
1593 | printEntry(entry, NULL); |
1594 | va_end(argq); |
1595 | |
1596 | if (!debug) { |
1597 | once = 1; |
1598 | va_end(argp); |
1599 | return; |
1600 | } |
1601 | |
1602 | if (okay) { |
1603 | va_end(argp); |
1604 | return; |
1605 | } |
1606 | |
1607 | if (!once) |
1608 | log_message(stderr, "DBG: command line: %s\n", saved_command_line); |
1609 | once = 1; |
1610 | fprintf(stderr, "DBG: Image entry failed: "); |
1611 | vfprintf(stderr, fmt, argp); |
1612 | printEntry(entry, stderr); |
1613 | va_end(argp); |
1614 | } |
1615 | |
1616 | #define beginswith(s, c) ((s) && (s)[0] == (c)) |
1617 | |
1618 | static int endswith(const char *s, char c) |
1619 | { |
1620 | int slen; |
1621 | |
1622 | if (!s || !s[0]) |
1623 | return 0; |
1624 | slen = strlen(s) - 1; |
1625 | |
1626 | return s[slen] == c; |
1627 | } |
1628 | |
1629 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, |
1630 | int skipRemoved, int flags) { |
1631 | struct singleLine * line; |
1632 | char * fullName; |
1633 | int i; |
1634 | char * dev; |
1635 | char * rootspec; |
1636 | char * rootdev; |
1637 | |
1638 | if (skipRemoved && entry->skip) { |
1639 | notSuitablePrintf(entry, 0, "marked to skip\n"); |
1640 | return 0; |
1641 | } |
1642 | |
1643 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
1644 | if (!line) { |
1645 | notSuitablePrintf(entry, 0, "no line found\n"); |
1646 | return 0; |
1647 | } |
1648 | if (line->numElements < 2) { |
1649 | notSuitablePrintf(entry, 0, "line has only %d elements\n", |
1650 | line->numElements); |
1651 | return 0; |
1652 | } |
1653 | |
1654 | if (flags & GRUBBY_BADIMAGE_OKAY) { |
1655 | notSuitablePrintf(entry, 1, "\n"); |
1656 | return 1; |
1657 | } |
1658 | |
1659 | fullName = alloca(strlen(bootPrefix) + |
1660 | strlen(line->elements[1].item) + 1); |
1661 | rootspec = getRootSpecifier(line->elements[1].item); |
1662 | int rootspec_offset = rootspec ? strlen(rootspec) : 0; |
1663 | int hasslash = endswith(bootPrefix, '/') || |
1664 | beginswith(line->elements[1].item + rootspec_offset, '/'); |
1665 | sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/", |
1666 | line->elements[1].item + rootspec_offset); |
1667 | if (access(fullName, R_OK)) { |
1668 | notSuitablePrintf(entry, 0, "access to %s failed\n", fullName); |
1669 | return 0; |
1670 | } |
1671 | for (i = 2; i < line->numElements; i++) |
1672 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1673 | if (i < line->numElements) { |
1674 | dev = line->elements[i].item + 5; |
1675 | } else { |
1676 | /* look for a lilo style LT_ROOT line */ |
1677 | line = getLineByType(LT_ROOT, entry->lines); |
1678 | |
1679 | if (line && line->numElements >= 2) { |
1680 | dev = line->elements[1].item; |
1681 | } else { |
1682 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS. |
1683 | * grub+multiboot uses LT_MBMODULE for the args, so check that too. |
1684 | */ |
1685 | line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines); |
1686 | |
1687 | /* failed to find one */ |
1688 | if (!line) { |
1689 | notSuitablePrintf(entry, 0, "no line found\n"); |
1690 | return 0; |
1691 | } |
1692 | |
1693 | for (i = 1; i < line->numElements; i++) |
1694 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1695 | if (i < line->numElements) |
1696 | dev = line->elements[i].item + 5; |
1697 | else { |
1698 | notSuitablePrintf(entry, 0, "no root= entry found\n"); |
1699 | /* it failed too... can't find root= */ |
1700 | return 0; |
1701 | } |
1702 | } |
1703 | } |
1704 | |
1705 | dev = getpathbyspec(dev); |
1706 | if (!getpathbyspec(dev)) { |
1707 | notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n", dev); |
1708 | return 0; |
1709 | } else |
1710 | dev = getpathbyspec(dev); |
1711 | |
1712 | rootdev = findDiskForRoot(); |
1713 | if (!rootdev) { |
1714 | notSuitablePrintf(entry, 0, "can't find root device\n"); |
1715 | return 0; |
1716 | } |
1717 | |
1718 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
1719 | notSuitablePrintf(entry, 0, "uuid missing: rootdev %s, dev %s\n", |
1720 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1721 | free(rootdev); |
1722 | return 0; |
1723 | } |
1724 | |
1725 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
1726 | notSuitablePrintf(entry, 0, "uuid mismatch: rootdev %s, dev %s\n", |
1727 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1728 | free(rootdev); |
1729 | return 0; |
1730 | } |
1731 | |
1732 | free(rootdev); |
1733 | notSuitablePrintf(entry, 1, "\n"); |
1734 | |
1735 | return 1; |
1736 | } |
1737 | |
1738 | /* returns the first match on or after the one pointed to by index (if index |
1739 | is not NULL) which is not marked as skip */ |
1740 | struct singleEntry * findEntryByPath(struct grubConfig * config, |
1741 | const char * kernel, const char * prefix, |
1742 | int * index) { |
1743 | struct singleEntry * entry = NULL; |
1744 | struct singleLine * line; |
1745 | int i; |
1746 | char * chptr; |
1747 | char * rootspec = NULL; |
1748 | enum lineType_e checkType = LT_KERNEL; |
1749 | |
1750 | if (isdigit(*kernel)) { |
1751 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
1752 | |
1753 | i = 0; |
1754 | indexVars[i] = strtol(kernel, &chptr, 10); |
1755 | while (*chptr == ',') { |
1756 | i++; |
1757 | kernel = chptr + 1; |
1758 | indexVars[i] = strtol(kernel, &chptr, 10); |
1759 | } |
1760 | |
1761 | if (*chptr) { |
1762 | /* can't parse it, bail */ |
1763 | return NULL; |
1764 | } |
1765 | |
1766 | indexVars[i + 1] = -1; |
1767 | |
1768 | i = 0; |
1769 | if (index) { |
1770 | while (i < *index) i++; |
1771 | if (indexVars[i] == -1) return NULL; |
1772 | } |
1773 | |
1774 | entry = findEntryByIndex(config, indexVars[i]); |
1775 | if (!entry) return NULL; |
1776 | |
1777 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
1778 | if (!line) return NULL; |
1779 | |
1780 | if (index) *index = indexVars[i]; |
1781 | return entry; |
1782 | } |
1783 | |
1784 | if (!strcmp(kernel, "DEFAULT")) { |
1785 | if (index && *index > config->defaultImage) { |
1786 | entry = NULL; |
1787 | } else { |
1788 | entry = findEntryByIndex(config, config->defaultImage); |
1789 | if (entry && entry->skip) |
1790 | entry = NULL; |
1791 | else if (index) |
1792 | *index = config->defaultImage; |
1793 | } |
1794 | } else if (!strcmp(kernel, "ALL")) { |
1795 | if (index) |
1796 | i = *index; |
1797 | else |
1798 | i = 0; |
1799 | |
1800 | while ((entry = findEntryByIndex(config, i))) { |
1801 | if (!entry->skip) break; |
1802 | i++; |
1803 | } |
1804 | |
1805 | if (entry && index) |
1806 | *index = i; |
1807 | } else { |
1808 | if (index) |
1809 | i = *index; |
1810 | else |
1811 | i = 0; |
1812 | |
1813 | if (!strncmp(kernel, "TITLE=", 6)) { |
1814 | prefix = ""; |
1815 | checkType = LT_TITLE|LT_MENUENTRY; |
1816 | kernel += 6; |
1817 | } |
1818 | |
1819 | for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) { |
1820 | if (entry->skip) continue; |
1821 | |
1822 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry); |
1823 | |
1824 | /* check all the lines matching checkType */ |
1825 | for (line = entry->lines; line; line = line->next) { |
1826 | enum lineType_e ct = checkType; |
1827 | if (entry->multiboot && checkType == LT_KERNEL) |
1828 | ct = LT_KERNEL|LT_KERNEL_EFI|LT_MBMODULE|LT_HYPER; |
1829 | else if (checkType & LT_KERNEL) |
1830 | ct = checkType | LT_KERNEL_EFI; |
1831 | line = getLineByType(ct, line); |
1832 | if (!line) |
1833 | break; /* not found in this entry */ |
1834 | |
1835 | if (line && line->type != LT_MENUENTRY && |
1836 | line->numElements >= 2) { |
1837 | rootspec = getRootSpecifier(line->elements[1].item); |
1838 | if (!strcmp(line->elements[1].item + |
1839 | ((rootspec != NULL) ? strlen(rootspec) : 0), |
1840 | kernel + strlen(prefix))) |
1841 | break; |
1842 | } |
1843 | if(line->type == LT_MENUENTRY && |
1844 | !strcmp(line->elements[1].item, kernel)) |
1845 | break; |
1846 | } |
1847 | |
1848 | /* make sure this entry has a kernel identifier; this skips |
1849 | * non-Linux boot entries (could find netbsd etc, though, which is |
1850 | * unfortunate) |
1851 | */ |
1852 | if (line && getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines)) |
1853 | break; /* found 'im! */ |
1854 | } |
1855 | |
1856 | if (index) *index = i; |
1857 | } |
1858 | |
1859 | return entry; |
1860 | } |
1861 | |
1862 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { |
1863 | struct singleEntry * entry; |
1864 | |
1865 | entry = cfg->entries; |
1866 | while (index && entry) { |
1867 | entry = entry->next; |
1868 | index--; |
1869 | } |
1870 | |
1871 | return entry; |
1872 | } |
1873 | |
1874 | /* Find a good template to use for the new kernel. An entry is |
1875 | * good if the kernel and mkinitrd exist (even if the entry |
1876 | * is going to be removed). Try and use the default entry, but |
1877 | * if that doesn't work just take the first. If we can't find one, |
1878 | * bail. */ |
1879 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, |
1880 | int * indexPtr, int skipRemoved, int flags) { |
1881 | struct singleEntry * entry, * entry2; |
1882 | int index; |
1883 | |
1884 | if (cfg->defaultImage > -1) { |
1885 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
1886 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
1887 | if (indexPtr) *indexPtr = cfg->defaultImage; |
1888 | return entry; |
1889 | } |
1890 | } |
1891 | |
1892 | index = 0; |
1893 | while ((entry = findEntryByIndex(cfg, index))) { |
1894 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
1895 | int j; |
1896 | for (j = 0; j < index; j++) { |
1897 | entry2 = findEntryByIndex(cfg, j); |
1898 | if (entry2->skip) index--; |
1899 | } |
1900 | if (indexPtr) *indexPtr = index; |
1901 | |
1902 | return entry; |
1903 | } |
1904 | |
1905 | index++; |
1906 | } |
1907 | |
1908 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); |
1909 | |
1910 | return NULL; |
1911 | } |
1912 | |
1913 | char * findBootPrefix(void) { |
1914 | struct stat sb, sb2; |
1915 | |
1916 | stat("/", &sb); |
1917 | #ifdef __ia64__ |
1918 | stat("/boot/efi/EFI/redhat/", &sb2); |
1919 | #else |
1920 | stat("/boot", &sb2); |
1921 | #endif |
1922 | |
1923 | if (sb.st_dev == sb2.st_dev) |
1924 | return strdup(""); |
1925 | |
1926 | #ifdef __ia64__ |
1927 | return strdup("/boot/efi/EFI/redhat/"); |
1928 | #else |
1929 | return strdup("/boot"); |
1930 | #endif |
1931 | } |
1932 | |
1933 | void markRemovedImage(struct grubConfig * cfg, const char * image, |
1934 | const char * prefix) { |
1935 | struct singleEntry * entry; |
1936 | |
1937 | if (!image) |
1938 | return; |
1939 | |
1940 | /* check and see if we're removing the default image */ |
1941 | if (isdigit(*image)) { |
1942 | entry = findEntryByPath(cfg, image, prefix, NULL); |
1943 | if(entry) |
1944 | entry->skip = 1; |
1945 | return; |
1946 | } |
1947 | |
1948 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
1949 | entry->skip = 1; |
1950 | } |
1951 | |
1952 | void setDefaultImage(struct grubConfig * config, int hasNew, |
1953 | const char * defaultKernelPath, int newIsDefault, |
1954 | const char * prefix, int flags, int index) { |
1955 | struct singleEntry * entry, * entry2, * newDefault; |
1956 | int i, j; |
1957 | |
1958 | if (newIsDefault) { |
1959 | config->defaultImage = 0; |
1960 | return; |
1961 | } else if ((index >= 0) && config->cfi->defaultIsIndex) { |
1962 | if (findEntryByIndex(config, index)) |
1963 | config->defaultImage = index; |
1964 | else |
1965 | config->defaultImage = -1; |
1966 | return; |
1967 | } else if (defaultKernelPath) { |
1968 | i = 0; |
1969 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { |
1970 | config->defaultImage = i; |
1971 | } else { |
1972 | config->defaultImage = -1; |
1973 | return; |
1974 | } |
1975 | } |
1976 | |
1977 | /* defaultImage now points to what we'd like to use, but before any order |
1978 | changes */ |
1979 | if ((config->defaultImage == DEFAULT_SAVED) || |
1980 | (config->defaultImage == DEFAULT_SAVED_GRUB2)) |
1981 | /* default is set to saved, we don't want to change it */ |
1982 | return; |
1983 | |
1984 | if (config->defaultImage > -1) |
1985 | entry = findEntryByIndex(config, config->defaultImage); |
1986 | else |
1987 | entry = NULL; |
1988 | |
1989 | if (entry && !entry->skip) { |
1990 | /* we can preserve the default */ |
1991 | if (hasNew) |
1992 | config->defaultImage++; |
1993 | |
1994 | /* count the number of entries erased before this one */ |
1995 | for (j = 0; j < config->defaultImage; j++) { |
1996 | entry2 = findEntryByIndex(config, j); |
1997 | if (entry2->skip) config->defaultImage--; |
1998 | } |
1999 | } else if (hasNew) { |
2000 | config->defaultImage = 0; |
2001 | } else { |
2002 | /* Either we just erased the default (or the default line was bad |
2003 | * to begin with) and didn't put a new one in. We'll use the first |
2004 | * valid image. */ |
2005 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, |
2006 | flags); |
2007 | if (!newDefault) |
2008 | config->defaultImage = -1; |
2009 | } |
2010 | } |
2011 | |
2012 | void setFallbackImage(struct grubConfig * config, int hasNew) { |
2013 | struct singleEntry * entry, * entry2; |
2014 | int j; |
2015 | |
2016 | if (config->fallbackImage == -1) return; |
2017 | |
2018 | entry = findEntryByIndex(config, config->fallbackImage); |
2019 | if (!entry || entry->skip) { |
2020 | config->fallbackImage = -1; |
2021 | return; |
2022 | } |
2023 | |
2024 | if (hasNew) |
2025 | config->fallbackImage++; |
2026 | |
2027 | /* count the number of entries erased before this one */ |
2028 | for (j = 0; j < config->fallbackImage; j++) { |
2029 | entry2 = findEntryByIndex(config, j); |
2030 | if (entry2->skip) config->fallbackImage--; |
2031 | } |
2032 | } |
2033 | |
2034 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { |
2035 | struct singleLine * line; |
2036 | char * root = NULL; |
2037 | int i; |
2038 | |
2039 | printf("index=%d\n", index); |
2040 | |
2041 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
2042 | if (!line) { |
2043 | printf("non linux entry\n"); |
2044 | return; |
2045 | } |
2046 | |
2047 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2048 | printf("kernel=%s\n", line->elements[1].item); |
2049 | else |
2050 | printf("kernel=%s%s\n", prefix, line->elements[1].item); |
2051 | |
2052 | if (line->numElements >= 3) { |
2053 | printf("args=\""); |
2054 | i = 2; |
2055 | while (i < line->numElements) { |
2056 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
2057 | root = line->elements[i].item + 5; |
2058 | } else { |
2059 | printf("%s%s", line->elements[i].item, |
2060 | line->elements[i].indent); |
2061 | } |
2062 | |
2063 | i++; |
2064 | } |
2065 | printf("\"\n"); |
2066 | } else { |
2067 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2068 | if (line) { |
2069 | char * s; |
2070 | |
2071 | printf("args=\""); |
2072 | i = 1; |
2073 | while (i < line->numElements) { |
2074 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
2075 | root = line->elements[i].item + 5; |
2076 | } else { |
2077 | s = line->elements[i].item; |
2078 | |
2079 | printf("%s%s", s, line->elements[i].indent); |
2080 | } |
2081 | |
2082 | i++; |
2083 | } |
2084 | |
2085 | s = line->elements[i - 1].indent; |
2086 | printf("\"\n"); |
2087 | } |
2088 | } |
2089 | |
2090 | if (!root) { |
2091 | line = getLineByType(LT_ROOT, entry->lines); |
2092 | if (line && line->numElements >= 2) |
2093 | root=line->elements[1].item; |
2094 | } |
2095 | |
2096 | if (root) { |
2097 | char * s = alloca(strlen(root) + 1); |
2098 | |
2099 | strcpy(s, root); |
2100 | if (s[strlen(s) - 1] == '"') |
2101 | s[strlen(s) - 1] = '\0'; |
2102 | /* make sure the root doesn't have a trailing " */ |
2103 | printf("root=%s\n", s); |
2104 | } |
2105 | |
2106 | line = getLineByType(LT_INITRD|LT_INITRD_EFI, entry->lines); |
2107 | |
2108 | if (line && line->numElements >= 2) { |
2109 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2110 | printf("initrd="); |
2111 | else |
2112 | printf("initrd=%s", prefix); |
2113 | |
2114 | for (i = 1; i < line->numElements; i++) |
2115 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
2116 | printf("\n"); |
2117 | } |
2118 | |
2119 | line = getLineByType(LT_TITLE, entry->lines); |
2120 | if (line) { |
2121 | printf("title=%s\n", line->elements[1].item); |
2122 | } else { |
2123 | char * title; |
2124 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2125 | title = grub2ExtractTitle(line); |
2126 | if (title) |
2127 | printf("title=%s\n", title); |
2128 | } |
2129 | } |
2130 | |
2131 | int isSuseSystem(void) { |
2132 | const char * path; |
2133 | const static char default_path[] = "/etc/SuSE-release"; |
2134 | |
2135 | if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL) |
2136 | path = default_path; |
2137 | |
2138 | if (!access(path, R_OK)) |
2139 | return 1; |
2140 | return 0; |
2141 | } |
2142 | |
2143 | int isSuseGrubConf(const char * path) { |
2144 | FILE * grubConf; |
2145 | char * line = NULL; |
2146 | size_t len = 0, res = 0; |
2147 | |
2148 | grubConf = fopen(path, "r"); |
2149 | if (!grubConf) { |
2150 | dbgPrintf("Could not open SuSE configuration file '%s'\n", path); |
2151 | return 0; |
2152 | } |
2153 | |
2154 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2155 | if (!strncmp(line, "setup", 5)) { |
2156 | fclose(grubConf); |
2157 | free(line); |
2158 | return 1; |
2159 | } |
2160 | } |
2161 | |
2162 | dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n", |
2163 | path); |
2164 | |
2165 | fclose(grubConf); |
2166 | free(line); |
2167 | return 0; |
2168 | } |
2169 | |
2170 | int suseGrubConfGetLba(const char * path, int * lbaPtr) { |
2171 | FILE * grubConf; |
2172 | char * line = NULL; |
2173 | size_t res = 0, len = 0; |
2174 | |
2175 | if (!path) return 1; |
2176 | if (!lbaPtr) return 1; |
2177 | |
2178 | grubConf = fopen(path, "r"); |
2179 | if (!grubConf) return 1; |
2180 | |
2181 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2182 | if (line[res - 1] == '\n') |
2183 | line[res - 1] = '\0'; |
2184 | else if (len > res) |
2185 | line[res] = '\0'; |
2186 | else { |
2187 | line = realloc(line, res + 1); |
2188 | line[res] = '\0'; |
2189 | } |
2190 | |
2191 | if (!strncmp(line, "setup", 5)) { |
2192 | if (strstr(line, "--force-lba")) { |
2193 | *lbaPtr = 1; |
2194 | } else { |
2195 | *lbaPtr = 0; |
2196 | } |
2197 | dbgPrintf("lba: %i\n", *lbaPtr); |
2198 | break; |
2199 | } |
2200 | } |
2201 | |
2202 | free(line); |
2203 | fclose(grubConf); |
2204 | return 0; |
2205 | } |
2206 | |
2207 | int suseGrubConfGetInstallDevice(const char * path, char ** devicePtr) { |
2208 | FILE * grubConf; |
2209 | char * line = NULL; |
2210 | size_t res = 0, len = 0; |
2211 | char * lastParamPtr = NULL; |
2212 | char * secLastParamPtr = NULL; |
2213 | char installDeviceNumber = '\0'; |
2214 | char * bounds = NULL; |
2215 | |
2216 | if (!path) return 1; |
2217 | if (!devicePtr) return 1; |
2218 | |
2219 | grubConf = fopen(path, "r"); |
2220 | if (!grubConf) return 1; |
2221 | |
2222 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2223 | if (strncmp(line, "setup", 5)) |
2224 | continue; |
2225 | |
2226 | if (line[res - 1] == '\n') |
2227 | line[res - 1] = '\0'; |
2228 | else if (len > res) |
2229 | line[res] = '\0'; |
2230 | else { |
2231 | line = realloc(line, res + 1); |
2232 | line[res] = '\0'; |
2233 | } |
2234 | |
2235 | lastParamPtr = bounds = line + res; |
2236 | |
2237 | /* Last parameter in grub may be an optional IMAGE_DEVICE */ |
2238 | while (!isspace(*lastParamPtr)) |
2239 | lastParamPtr--; |
2240 | lastParamPtr++; |
2241 | |
2242 | secLastParamPtr = lastParamPtr - 2; |
2243 | dbgPrintf("lastParamPtr: %s\n", lastParamPtr); |
2244 | |
2245 | if (lastParamPtr + 3 > bounds) { |
2246 | dbgPrintf("lastParamPtr going over boundary"); |
2247 | fclose(grubConf); |
2248 | free(line); |
2249 | return 1; |
2250 | } |
2251 | if (!strncmp(lastParamPtr, "(hd", 3)) |
2252 | lastParamPtr += 3; |
2253 | dbgPrintf("lastParamPtr: %c\n", *lastParamPtr); |
2254 | |
2255 | /* |
2256 | * Second last parameter will decide wether last parameter is |
2257 | * an IMAGE_DEVICE or INSTALL_DEVICE |
2258 | */ |
2259 | while (!isspace(*secLastParamPtr)) |
2260 | secLastParamPtr--; |
2261 | secLastParamPtr++; |
2262 | |
2263 | if (secLastParamPtr + 3 > bounds) { |
2264 | dbgPrintf("secLastParamPtr going over boundary"); |
2265 | fclose(grubConf); |
2266 | free(line); |
2267 | return 1; |
2268 | } |
2269 | dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr); |
2270 | if (!strncmp(secLastParamPtr, "(hd", 3)) { |
2271 | secLastParamPtr += 3; |
2272 | dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr); |
2273 | installDeviceNumber = *secLastParamPtr; |
2274 | } else { |
2275 | installDeviceNumber = *lastParamPtr; |
2276 | } |
2277 | |
2278 | *devicePtr = malloc(6); |
2279 | snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber); |
2280 | dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber); |
2281 | fclose(grubConf); |
2282 | free(line); |
2283 | return 0; |
2284 | } |
2285 | |
2286 | free(line); |
2287 | fclose(grubConf); |
2288 | return 1; |
2289 | } |
2290 | |
2291 | int grubGetBootFromDeviceMap(const char * device, |
2292 | char ** bootPtr) { |
2293 | FILE * deviceMap; |
2294 | char * line = NULL; |
2295 | size_t res = 0, len = 0; |
2296 | char * devicePtr; |
2297 | char * bounds = NULL; |
2298 | const char * path; |
2299 | const static char default_path[] = "/boot/grub/device.map"; |
2300 | |
2301 | if (!device) return 1; |
2302 | if (!bootPtr) return 1; |
2303 | |
2304 | if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL) |
2305 | path = default_path; |
2306 | |
2307 | dbgPrintf("opening grub device.map file from: %s\n", path); |
2308 | deviceMap = fopen(path, "r"); |
2309 | if (!deviceMap) |
2310 | return 1; |
2311 | |
2312 | while ((res = getline(&line, &len, deviceMap)) != -1) { |
2313 | if (!strncmp(line, "#", 1)) |
2314 | continue; |
2315 | |
2316 | if (line[res - 1] == '\n') |
2317 | line[res - 1] = '\0'; |
2318 | else if (len > res) |
2319 | line[res] = '\0'; |
2320 | else { |
2321 | line = realloc(line, res + 1); |
2322 | line[res] = '\0'; |
2323 | } |
2324 | |
2325 | devicePtr = line; |
2326 | bounds = line + res; |
2327 | |
2328 | while ((isspace(*line) && ((devicePtr + 1) <= bounds))) |
2329 | devicePtr++; |
2330 | dbgPrintf("device: %s\n", devicePtr); |
2331 | |
2332 | if (!strncmp(devicePtr, device, strlen(device))) { |
2333 | devicePtr += strlen(device); |
2334 | while (isspace(*devicePtr) && ((devicePtr + 1) <= bounds)) |
2335 | devicePtr++; |
2336 | |
2337 | *bootPtr = strdup(devicePtr); |
2338 | break; |
2339 | } |
2340 | } |
2341 | |
2342 | free(line); |
2343 | fclose(deviceMap); |
2344 | return 0; |
2345 | } |
2346 | |
2347 | int suseGrubConfGetBoot(const char * path, char ** bootPtr) { |
2348 | char * grubDevice; |
2349 | |
2350 | if (suseGrubConfGetInstallDevice(path, &grubDevice)) |
2351 | dbgPrintf("error looking for grub installation device\n"); |
2352 | else |
2353 | dbgPrintf("grubby installation device: %s\n", grubDevice); |
2354 | |
2355 | if (grubGetBootFromDeviceMap(grubDevice, bootPtr)) |
2356 | dbgPrintf("error looking for grub boot device\n"); |
2357 | else |
2358 | dbgPrintf("grubby boot device: %s\n", *bootPtr); |
2359 | |
2360 | free(grubDevice); |
2361 | return 0; |
2362 | } |
2363 | |
2364 | int parseSuseGrubConf(int * lbaPtr, char ** bootPtr) { |
2365 | /* |
2366 | * This SuSE grub configuration file at this location is not your average |
2367 | * grub configuration file, but instead the grub commands used to setup |
2368 | * grub on that system. |
2369 | */ |
2370 | const char * path; |
2371 | const static char default_path[] = "/etc/grub.conf"; |
2372 | |
2373 | if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL) |
2374 | path = default_path; |
2375 | |
2376 | if (!isSuseGrubConf(path)) return 1; |
2377 | |
2378 | if (lbaPtr) { |
2379 | *lbaPtr = 0; |
2380 | if (suseGrubConfGetLba(path, lbaPtr)) |
2381 | return 1; |
2382 | } |
2383 | |
2384 | if (bootPtr) { |
2385 | *bootPtr = NULL; |
2386 | suseGrubConfGetBoot(path, bootPtr); |
2387 | } |
2388 | |
2389 | return 0; |
2390 | } |
2391 | |
2392 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { |
2393 | FILE * in; |
2394 | char buf[1024]; |
2395 | char * chptr; |
2396 | char * start; |
2397 | char * param; |
2398 | |
2399 | in = fopen("/etc/conf.d/grub", "r"); |
2400 | if (!in) return 1; |
2401 | |
2402 | if (lbaPtr) *lbaPtr = 0; |
2403 | if (bootPtr) *bootPtr = NULL; |
2404 | |
2405 | while (fgets(buf, sizeof(buf), in)) { |
2406 | start = buf; |
2407 | while (isspace(*start)) start++; |
2408 | if (*start == '#') continue; |
2409 | |
2410 | chptr = strchr(start, '='); |
2411 | if (!chptr) continue; |
2412 | chptr--; |
2413 | while (*chptr && isspace(*chptr)) chptr--; |
2414 | chptr++; |
2415 | *chptr = '\0'; |
2416 | |
2417 | param = chptr + 1; |
2418 | while (*param && isspace(*param)) param++; |
2419 | if (*param == '=') { |
2420 | param++; |
2421 | while (*param && isspace(*param)) param++; |
2422 | } |
2423 | |
2424 | chptr = param; |
2425 | while (*chptr && !isspace(*chptr)) chptr++; |
2426 | *chptr = '\0'; |
2427 | |
2428 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
2429 | *lbaPtr = 1; |
2430 | else if (!strcmp(start, "boot") && bootPtr) |
2431 | *bootPtr = strdup(param); |
2432 | } |
2433 | |
2434 | fclose(in); |
2435 | |
2436 | return 0; |
2437 | } |
2438 | |
2439 | void dumpSysconfigGrub(void) { |
2440 | char * boot = NULL; |
2441 | int lba; |
2442 | |
2443 | if (isSuseSystem()) { |
2444 | if (parseSuseGrubConf(&lba, &boot)) { |
2445 | free(boot); |
2446 | return; |
2447 | } |
2448 | } else { |
2449 | if (parseSysconfigGrub(&lba, &boot)) { |
2450 | free(boot); |
2451 | return; |
2452 | } |
2453 | } |
2454 | |
2455 | if (lba) printf("lba\n"); |
2456 | if (boot) { |
2457 | printf("boot=%s\n", boot); |
2458 | free(boot); |
2459 | } |
2460 | } |
2461 | |
2462 | int displayInfo(struct grubConfig * config, char * kernel, |
2463 | const char * prefix) { |
2464 | int i = 0; |
2465 | struct singleEntry * entry; |
2466 | struct singleLine * line; |
2467 | |
2468 | entry = findEntryByPath(config, kernel, prefix, &i); |
2469 | if (!entry) { |
2470 | fprintf(stderr, _("grubby: kernel not found\n")); |
2471 | return 1; |
2472 | } |
2473 | |
2474 | /* this is a horrible hack to support /etc/conf.d/grub; there must |
2475 | be a better way */ |
2476 | if (config->cfi == &grubConfigType) { |
2477 | dumpSysconfigGrub(); |
2478 | } else { |
2479 | line = getLineByType(LT_BOOT, config->theLines); |
2480 | if (line && line->numElements >= 1) { |
2481 | printf("boot=%s\n", line->elements[1].item); |
2482 | } |
2483 | |
2484 | line = getLineByType(LT_LBA, config->theLines); |
2485 | if (line) printf("lba\n"); |
2486 | } |
2487 | |
2488 | displayEntry(entry, prefix, i); |
2489 | |
2490 | i++; |
2491 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
2492 | displayEntry(entry, prefix, i); |
2493 | i++; |
2494 | } |
2495 | |
2496 | return 0; |
2497 | } |
2498 | |
2499 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
2500 | struct singleLine * tmplLine, |
2501 | struct singleLine * prevLine, |
2502 | const char * val, |
2503 | struct configFileInfo * cfi) |
2504 | { |
2505 | struct singleLine * newLine = lineDup(tmplLine); |
2506 | |
2507 | if (isEfi && cfi == &grub2ConfigType) { |
2508 | enum lineType_e old = newLine->type; |
2509 | newLine->type = preferredLineType(newLine->type, cfi); |
2510 | if (old != newLine->type) |
2511 | newLine->elements[0].item = getKeyByType(newLine->type, cfi); |
2512 | } |
2513 | |
2514 | if (val) { |
2515 | /* override the inherited value with our own. |
2516 | * This is a little weak because it only applies to elements[1] |
2517 | */ |
2518 | if (newLine->numElements > 1) |
2519 | removeElement(newLine, 1); |
2520 | insertElement(newLine, val, 1, cfi); |
2521 | |
2522 | /* but try to keep the rootspec from the template... sigh */ |
2523 | if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD|LT_KERNEL_EFI|LT_INITRD_EFI)) { |
2524 | char * rootspec = getRootSpecifier(tmplLine->elements[1].item); |
2525 | if (rootspec != NULL) { |
2526 | free(newLine->elements[1].item); |
2527 | newLine->elements[1].item = |
2528 | sdupprintf("%s%s", rootspec, val); |
2529 | } |
2530 | } |
2531 | } |
2532 | |
2533 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? |
2534 | newLine->elements[0].item : ""); |
2535 | |
2536 | if (!entry->lines) { |
2537 | /* first one on the list */ |
2538 | entry->lines = newLine; |
2539 | } else if (prevLine) { |
2540 | /* add after prevLine */ |
2541 | newLine->next = prevLine->next; |
2542 | prevLine->next = newLine; |
2543 | } |
2544 | |
2545 | return newLine; |
2546 | } |
2547 | |
2548 | /* val may be NULL */ |
2549 | struct singleLine * addLine(struct singleEntry * entry, |
2550 | struct configFileInfo * cfi, |
2551 | enum lineType_e type, char * defaultIndent, |
2552 | const char * val) { |
2553 | struct singleLine * line, * prev; |
2554 | struct keywordTypes * kw; |
2555 | struct singleLine tmpl; |
2556 | |
2557 | /* NB: This function shouldn't allocate items on the heap, rather on the |
2558 | * stack since it calls addLineTmpl which will make copies. |
2559 | */ |
2560 | if (type == LT_TITLE && cfi->titleBracketed) { |
2561 | /* we're doing a bracketed title (zipl) */ |
2562 | tmpl.type = type; |
2563 | tmpl.numElements = 1; |
2564 | tmpl.elements = alloca(sizeof(*tmpl.elements)); |
2565 | tmpl.elements[0].item = alloca(strlen(val)+3); |
2566 | sprintf(tmpl.elements[0].item, "[%s]", val); |
2567 | tmpl.elements[0].indent = ""; |
2568 | val = NULL; |
2569 | } else if (type == LT_MENUENTRY) { |
2570 | char *lineend = "--class gnu-linux --class gnu --class os {"; |
2571 | if (!val) { |
2572 | fprintf(stderr, "Line type LT_MENUENTRY requires a value\n"); |
2573 | abort(); |
2574 | } |
2575 | kw = getKeywordByType(type, cfi); |
2576 | if (!kw) { |
2577 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2578 | abort(); |
2579 | } |
2580 | tmpl.indent = ""; |
2581 | tmpl.type = type; |
2582 | tmpl.numElements = 3; |
2583 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2584 | tmpl.elements[0].item = kw->key; |
2585 | tmpl.elements[0].indent = alloca(2); |
2586 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2587 | tmpl.elements[1].item = (char *)val; |
2588 | tmpl.elements[1].indent = alloca(2); |
2589 | sprintf(tmpl.elements[1].indent, "%c", kw->nextChar); |
2590 | tmpl.elements[2].item = alloca(strlen(lineend)+1); |
2591 | strcpy(tmpl.elements[2].item, lineend); |
2592 | tmpl.elements[2].indent = ""; |
2593 | } else { |
2594 | kw = getKeywordByType(type, cfi); |
2595 | if (!kw) { |
2596 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2597 | abort(); |
2598 | } |
2599 | tmpl.type = type; |
2600 | tmpl.numElements = val ? 2 : 1; |
2601 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2602 | tmpl.elements[0].item = kw->key; |
2603 | tmpl.elements[0].indent = alloca(2); |
2604 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2605 | if (val) { |
2606 | tmpl.elements[1].item = (char *)val; |
2607 | tmpl.elements[1].indent = ""; |
2608 | } |
2609 | } |
2610 | |
2611 | /* The last non-empty line gives us the indention to us and the line |
2612 | to insert after. Note that comments are considered empty lines, which |
2613 | may not be ideal? If there are no lines or we are looking at the |
2614 | first line, we use defaultIndent (the first line is normally indented |
2615 | differently from the rest) */ |
2616 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
2617 | if (line->numElements) prev = line; |
2618 | /* fall back on the last line if prev isn't otherwise set */ |
2619 | if (!line->next && !prev) prev = line; |
2620 | } |
2621 | |
2622 | struct singleLine *menuEntry; |
2623 | menuEntry = getLineByType(LT_MENUENTRY, entry->lines); |
2624 | if (tmpl.type == LT_ENTRY_END) { |
2625 | if (menuEntry) |
2626 | tmpl.indent = menuEntry->indent; |
2627 | else |
2628 | tmpl.indent = defaultIndent ?: ""; |
2629 | } else if (tmpl.type != LT_MENUENTRY) { |
2630 | if (menuEntry) |
2631 | tmpl.indent = "\t"; |
2632 | else if (prev == entry->lines) |
2633 | tmpl.indent = defaultIndent ?: ""; |
2634 | else |
2635 | tmpl.indent = prev->indent; |
2636 | } |
2637 | |
2638 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
2639 | } |
2640 | |
2641 | void removeLine(struct singleEntry * entry, struct singleLine * line) { |
2642 | struct singleLine * prev; |
2643 | int i; |
2644 | |
2645 | for (i = 0; i < line->numElements; i++) { |
2646 | free(line->elements[i].item); |
2647 | free(line->elements[i].indent); |
2648 | } |
2649 | free(line->elements); |
2650 | free(line->indent); |
2651 | |
2652 | if (line == entry->lines) { |
2653 | entry->lines = line->next; |
2654 | } else { |
2655 | prev = entry->lines; |
2656 | while (prev->next != line) prev = prev->next; |
2657 | prev->next = line->next; |
2658 | } |
2659 | |
2660 | free(line); |
2661 | } |
2662 | |
2663 | static void requote(struct singleLine *tmplLine, struct configFileInfo * cfi) |
2664 | { |
2665 | struct singleLine newLine = { |
2666 | .indent = tmplLine->indent, |
2667 | .type = tmplLine->type, |
2668 | .next = tmplLine->next, |
2669 | }; |
2670 | int firstQuotedItem = -1; |
2671 | int quoteLen = 0; |
2672 | int j; |
2673 | int element = 0; |
2674 | char *c; |
2675 | |
2676 | c = malloc(strlen(tmplLine->elements[0].item) + 1); |
2677 | strcpy(c, tmplLine->elements[0].item); |
2678 | insertElement(&newLine, c, element++, cfi); |
2679 | free(c); |
2680 | c = NULL; |
2681 | |
2682 | for (j = 1; j < tmplLine->numElements; j++) { |
2683 | if (firstQuotedItem == -1) { |
2684 | quoteLen += strlen(tmplLine->elements[j].item); |
2685 | |
2686 | if (isquote(tmplLine->elements[j].item[0])) { |
2687 | firstQuotedItem = j; |
2688 | quoteLen += strlen(tmplLine->elements[j].indent); |
2689 | } else { |
2690 | c = malloc(quoteLen + 1); |
2691 | strcpy(c, tmplLine->elements[j].item); |
2692 | insertElement(&newLine, c, element++, cfi); |
2693 | free(c); |
2694 | quoteLen = 0; |
2695 | } |
2696 | } else { |
2697 | int itemlen = strlen(tmplLine->elements[j].item); |
2698 | quoteLen += itemlen; |
2699 | quoteLen += strlen(tmplLine->elements[j].indent); |
2700 | |
2701 | if (isquote(tmplLine->elements[j].item[itemlen - 1])) { |
2702 | c = malloc(quoteLen + 1); |
2703 | c[0] = '\0'; |
2704 | for (int i = firstQuotedItem; i < j+1; i++) { |
2705 | strcat(c, tmplLine->elements[i].item); |
2706 | strcat(c, tmplLine->elements[i].indent); |
2707 | } |
2708 | insertElement(&newLine, c, element++, cfi); |
2709 | free(c); |
2710 | |
2711 | firstQuotedItem = -1; |
2712 | quoteLen = 0; |
2713 | } |
2714 | } |
2715 | } |
2716 | while (tmplLine->numElements) |
2717 | removeElement(tmplLine, 0); |
2718 | if (tmplLine->elements) |
2719 | free(tmplLine->elements); |
2720 | |
2721 | tmplLine->numElements = newLine.numElements; |
2722 | tmplLine->elements = newLine.elements; |
2723 | } |
2724 | |
2725 | static void insertElement(struct singleLine * line, |
2726 | const char * item, int insertHere, |
2727 | struct configFileInfo * cfi) |
2728 | { |
2729 | struct keywordTypes * kw; |
2730 | char indent[2] = ""; |
2731 | |
2732 | /* sanity check */ |
2733 | if (insertHere > line->numElements) { |
2734 | dbgPrintf("insertElement() adjusting insertHere from %d to %d\n", |
2735 | insertHere, line->numElements); |
2736 | insertHere = line->numElements; |
2737 | } |
2738 | |
2739 | line->elements = realloc(line->elements, (line->numElements + 1) * |
2740 | sizeof(*line->elements)); |
2741 | memmove(&line->elements[insertHere+1], |
2742 | &line->elements[insertHere], |
2743 | (line->numElements - insertHere) * |
2744 | sizeof(*line->elements)); |
2745 | line->elements[insertHere].item = strdup(item); |
2746 | |
2747 | kw = getKeywordByType(line->type, cfi); |
2748 | |
2749 | if (line->numElements == 0) { |
2750 | indent[0] = '\0'; |
2751 | } else if (insertHere == 0) { |
2752 | indent[0] = kw->nextChar; |
2753 | } else if (kw->separatorChar != '\0') { |
2754 | indent[0] = kw->separatorChar; |
2755 | } else { |
2756 | indent[0] = ' '; |
2757 | } |
2758 | |
2759 | if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') { |
2760 | /* move the end-of-line forward */ |
2761 | line->elements[insertHere].indent = |
2762 | line->elements[insertHere-1].indent; |
2763 | line->elements[insertHere-1].indent = strdup(indent); |
2764 | } else { |
2765 | line->elements[insertHere].indent = strdup(indent); |
2766 | } |
2767 | |
2768 | line->numElements++; |
2769 | |
2770 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", |
2771 | line->elements[0].item, |
2772 | line->elements[insertHere].item, |
2773 | line->elements[insertHere].indent, |
2774 | insertHere); |
2775 | } |
2776 | |
2777 | static void removeElement(struct singleLine * line, int removeHere) { |
2778 | int i; |
2779 | |
2780 | /* sanity check */ |
2781 | if (removeHere >= line->numElements) return; |
2782 | |
2783 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, |
2784 | removeHere, line->elements[removeHere].item); |
2785 | |
2786 | free(line->elements[removeHere].item); |
2787 | |
2788 | if (removeHere > 1) { |
2789 | /* previous argument gets this argument's post-indentation */ |
2790 | free(line->elements[removeHere-1].indent); |
2791 | line->elements[removeHere-1].indent = |
2792 | line->elements[removeHere].indent; |
2793 | } else { |
2794 | free(line->elements[removeHere].indent); |
2795 | } |
2796 | |
2797 | /* now collapse the array, but don't bother to realloc smaller */ |
2798 | for (i = removeHere; i < line->numElements - 1; i++) |
2799 | line->elements[i] = line->elements[i + 1]; |
2800 | |
2801 | line->numElements--; |
2802 | } |
2803 | |
2804 | int argMatch(const char * one, const char * two) { |
2805 | char * first, * second; |
2806 | char * chptr; |
2807 | |
2808 | first = strcpy(alloca(strlen(one) + 1), one); |
2809 | second = strcpy(alloca(strlen(two) + 1), two); |
2810 | |
2811 | chptr = strchr(first, '='); |
2812 | if (chptr) *chptr = '\0'; |
2813 | |
2814 | chptr = strchr(second, '='); |
2815 | if (chptr) *chptr = '\0'; |
2816 | |
2817 | return strcmp(first, second); |
2818 | } |
2819 | |
2820 | int updateActualImage(struct grubConfig * cfg, const char * image, |
2821 | const char * prefix, const char * addArgs, |
2822 | const char * removeArgs, int multibootArgs) { |
2823 | struct singleEntry * entry; |
2824 | struct singleLine * line, * rootLine; |
2825 | int index = 0; |
2826 | int i, k; |
2827 | const char ** newArgs, ** oldArgs; |
2828 | const char ** arg; |
2829 | int useKernelArgs, useRoot; |
2830 | int firstElement; |
2831 | int *usedElements; |
2832 | int doreplace; |
2833 | |
2834 | if (!image) return 0; |
2835 | |
2836 | if (!addArgs) { |
2837 | newArgs = malloc(sizeof(*newArgs)); |
2838 | *newArgs = NULL; |
2839 | } else { |
2840 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
2841 | fprintf(stderr, |
2842 | _("grubby: error separating arguments '%s'\n"), addArgs); |
2843 | return 1; |
2844 | } |
2845 | } |
2846 | |
2847 | if (!removeArgs) { |
2848 | oldArgs = malloc(sizeof(*oldArgs)); |
2849 | *oldArgs = NULL; |
2850 | } else { |
2851 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
2852 | fprintf(stderr, |
2853 | _("grubby: error separating arguments '%s'\n"), removeArgs); |
2854 | free(newArgs); |
2855 | return 1; |
2856 | } |
2857 | } |
2858 | |
2859 | |
2860 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
2861 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); |
2862 | |
2863 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
2864 | && !multibootArgs); |
2865 | |
2866 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
2867 | |
2868 | if (multibootArgs && !entry->multiboot) |
2869 | continue; |
2870 | |
2871 | /* Determine where to put the args. If this config supports |
2872 | * LT_KERNELARGS, use that. Otherwise use |
2873 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. |
2874 | */ |
2875 | if (useKernelArgs) { |
2876 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2877 | if (!line) { |
2878 | /* no LT_KERNELARGS, need to add it */ |
2879 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, |
2880 | cfg->secondaryIndent, NULL); |
2881 | } |
2882 | firstElement = 1; |
2883 | |
2884 | } else if (multibootArgs) { |
2885 | line = getLineByType(LT_HYPER, entry->lines); |
2886 | if (!line) { |
2887 | /* a multiboot entry without LT_HYPER? */ |
2888 | continue; |
2889 | } |
2890 | firstElement = 2; |
2891 | |
2892 | } else { |
2893 | line = getLineByType(LT_KERNEL|LT_MBMODULE|LT_KERNEL_EFI, entry->lines); |
2894 | if (!line) { |
2895 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ |
2896 | continue; |
2897 | } |
2898 | firstElement = 2; |
2899 | } |
2900 | |
2901 | /* handle the elilo case which does: |
2902 | * append="hypervisor args -- kernel args" |
2903 | */ |
2904 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { |
2905 | /* this is a multiboot entry, make sure there's |
2906 | * -- on the args line |
2907 | */ |
2908 | for (i = firstElement; i < line->numElements; i++) { |
2909 | if (!strcmp(line->elements[i].item, "--")) |
2910 | break; |
2911 | } |
2912 | if (i == line->numElements) { |
2913 | /* assume all existing args are kernel args, |
2914 | * prepend -- to make it official |
2915 | */ |
2916 | insertElement(line, "--", firstElement, cfg->cfi); |
2917 | i = firstElement; |
2918 | } |
2919 | if (!multibootArgs) { |
2920 | /* kernel args start after the -- */ |
2921 | firstElement = i + 1; |
2922 | } |
2923 | } else if (cfg->cfi->mbConcatArgs) { |
2924 | /* this is a non-multiboot entry, remove hyper args */ |
2925 | for (i = firstElement; i < line->numElements; i++) { |
2926 | if (!strcmp(line->elements[i].item, "--")) |
2927 | break; |
2928 | } |
2929 | if (i < line->numElements) { |
2930 | /* remove args up to -- */ |
2931 | while (strcmp(line->elements[firstElement].item, "--")) |
2932 | removeElement(line, firstElement); |
2933 | /* remove -- */ |
2934 | removeElement(line, firstElement); |
2935 | } |
2936 | } |
2937 | |
2938 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
2939 | |
2940 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
2941 | |
2942 | doreplace = 1; |
2943 | for (i = firstElement; i < line->numElements; i++) { |
2944 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2945 | !strcmp(line->elements[i].item, "--")) |
2946 | { |
2947 | /* reached the end of hyper args, insert here */ |
2948 | doreplace = 0; |
2949 | break; |
2950 | } |
2951 | if (usedElements[i]) |
2952 | continue; |
2953 | if (!argMatch(line->elements[i].item, *arg)) { |
2954 | usedElements[i]=1; |
2955 | break; |
2956 | } |
2957 | } |
2958 | |
2959 | if (i < line->numElements && doreplace) { |
2960 | /* direct replacement */ |
2961 | free(line->elements[i].item); |
2962 | line->elements[i].item = strdup(*arg); |
2963 | |
2964 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
2965 | /* root= replacement */ |
2966 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2967 | if (rootLine) { |
2968 | free(rootLine->elements[1].item); |
2969 | rootLine->elements[1].item = strdup(*arg + 5); |
2970 | } else { |
2971 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, |
2972 | cfg->secondaryIndent, *arg + 5); |
2973 | } |
2974 | } |
2975 | |
2976 | else { |
2977 | /* insert/append */ |
2978 | insertElement(line, *arg, i, cfg->cfi); |
2979 | usedElements = realloc(usedElements, line->numElements * |
2980 | sizeof(*usedElements)); |
2981 | memmove(&usedElements[i + 1], &usedElements[i], |
2982 | line->numElements - i - 1); |
2983 | usedElements[i] = 1; |
2984 | |
2985 | /* if we updated a root= here even though there is a |
2986 | LT_ROOT available we need to remove the LT_ROOT entry |
2987 | (this will happen if we switch from a device to a label) */ |
2988 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
2989 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2990 | if (rootLine) |
2991 | removeLine(entry, rootLine); |
2992 | } |
2993 | } |
2994 | } |
2995 | |
2996 | free(usedElements); |
2997 | |
2998 | for (arg = oldArgs; *arg; arg++) { |
2999 | for (i = firstElement; i < line->numElements; i++) { |
3000 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
3001 | !strcmp(line->elements[i].item, "--")) |
3002 | /* reached the end of hyper args, stop here */ |
3003 | break; |
3004 | if (!argMatch(line->elements[i].item, *arg)) { |
3005 | removeElement(line, i); |
3006 | break; |
3007 | } |
3008 | } |
3009 | /* handle removing LT_ROOT line too */ |
3010 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
3011 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3012 | if (rootLine) |
3013 | removeLine(entry, rootLine); |
3014 | } |
3015 | } |
3016 | |
3017 | if (line->numElements == 1) { |
3018 | /* don't need the line at all (note it has to be a |
3019 | LT_KERNELARGS for this to happen */ |
3020 | removeLine(entry, line); |
3021 | } |
3022 | } |
3023 | |
3024 | free(newArgs); |
3025 | free(oldArgs); |
3026 | |
3027 | return 0; |
3028 | } |
3029 | |
3030 | int updateImage(struct grubConfig * cfg, const char * image, |
3031 | const char * prefix, const char * addArgs, |
3032 | const char * removeArgs, |
3033 | const char * addMBArgs, const char * removeMBArgs) { |
3034 | int rc = 0; |
3035 | |
3036 | if (!image) return rc; |
3037 | |
3038 | /* update the main args first... */ |
3039 | if (addArgs || removeArgs) |
3040 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); |
3041 | if (rc) return rc; |
3042 | |
3043 | /* and now any multiboot args */ |
3044 | if (addMBArgs || removeMBArgs) |
3045 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); |
3046 | return rc; |
3047 | } |
3048 | |
3049 | int updateInitrd(struct grubConfig * cfg, const char * image, |
3050 | const char * prefix, const char * initrd) { |
3051 | struct singleEntry * entry; |
3052 | struct singleLine * line, * kernelLine, *endLine = NULL; |
3053 | int index = 0; |
3054 | |
3055 | if (!image) return 0; |
3056 | |
3057 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3058 | kernelLine = getLineByType(LT_KERNEL|LT_KERNEL_EFI, entry->lines); |
3059 | if (!kernelLine) continue; |
3060 | |
3061 | line = getLineByType(LT_INITRD|LT_INITRD_EFI, entry->lines); |
3062 | if (line) |
3063 | removeLine(entry, line); |
3064 | if (prefix) { |
3065 | int prefixLen = strlen(prefix); |
3066 | if (!strncmp(initrd, prefix, prefixLen)) |
3067 | initrd += prefixLen; |
3068 | } |
3069 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
3070 | if (endLine) |
3071 | removeLine(entry, endLine); |
3072 | line = addLine(entry, cfg->cfi, preferredLineType(LT_INITRD, cfg->cfi), |
3073 | kernelLine->indent, initrd); |
3074 | if (!line) |
3075 | return 1; |
3076 | if (endLine) { |
3077 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
3078 | if (!line) |
3079 | return 1; |
3080 | } |
3081 | |
3082 | break; |
3083 | } |
3084 | |
3085 | return 0; |
3086 | } |
3087 | |
3088 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { |
3089 | int fd; |
3090 | unsigned char bootSect[512]; |
3091 | int offset; |
3092 | |
3093 | fd = open(device, O_RDONLY); |
3094 | if (fd < 0) { |
3095 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3096 | device, strerror(errno)); |
3097 | return 1; |
3098 | } |
3099 | |
3100 | if (read(fd, bootSect, 512) != 512) { |
3101 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3102 | device, strerror(errno)); |
3103 | return 1; |
3104 | } |
3105 | close(fd); |
3106 | |
3107 | /* first three bytes should match, a jmp short should be in there */ |
3108 | if (memcmp(boot, bootSect, 3)) |
3109 | return 0; |
3110 | |
3111 | if (boot[1] == JMP_SHORT_OPCODE) { |
3112 | offset = boot[2] + 2; |
3113 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
3114 | offset = (boot[3] << 8) + boot[2] + 2; |
3115 | } else if (boot[0] == JMP_SHORT_OPCODE) { |
3116 | offset = boot[1] + 2; |
3117 | /* |
3118 | * it looks like grub, when copying stage1 into the mbr, patches stage1 |
3119 | * right after the JMP location, replacing other instructions such as |
3120 | * JMPs for NOOPs. So, relax the check a little bit by skipping those |
3121 | * different bytes. |
3122 | */ |
3123 | if ((bootSect[offset + 1] == NOOP_OPCODE) |
3124 | && (bootSect[offset + 2] == NOOP_OPCODE)) { |
3125 | offset = offset + 3; |
3126 | } |
3127 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
3128 | offset = (boot[2] << 8) + boot[1] + 2; |
3129 | } else { |
3130 | return 0; |
3131 | } |
3132 | |
3133 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
3134 | return 0; |
3135 | |
3136 | return 2; |
3137 | } |
3138 | |
3139 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { |
3140 | int fd; |
3141 | char buf[65536]; |
3142 | char * end; |
3143 | char * chptr; |
3144 | char * chptr2; |
3145 | int rc; |
3146 | |
3147 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
3148 | *raw* devices listed in there */ |
3149 | |
3150 | if (!strncmp(mdDev, "/dev/", 5)) |
3151 | mdDev += 5; |
3152 | |
3153 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
3154 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
3155 | strerror(errno)); |
3156 | return 2; |
3157 | } |
3158 | |
3159 | rc = read(fd, buf, sizeof(buf) - 1); |
3160 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
3161 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
3162 | strerror(errno)); |
3163 | close(fd); |
3164 | return 2; |
3165 | } |
3166 | close(fd); |
3167 | buf[rc] = '\0'; |
3168 | |
3169 | chptr = buf; |
3170 | while (*chptr) { |
3171 | end = strchr(chptr, '\n'); |
3172 | if (!end) break; |
3173 | *end = '\0'; |
3174 | |
3175 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
3176 | chptr[strlen(mdDev)] == ' ') { |
3177 | |
3178 | /* found the device */ |
3179 | while (*chptr && *chptr != ':') chptr++; |
3180 | chptr++; |
3181 | while (*chptr && isspace(*chptr)) chptr++; |
3182 | |
3183 | /* skip the "active" bit */ |
3184 | while (*chptr && !isspace(*chptr)) chptr++; |
3185 | while (*chptr && isspace(*chptr)) chptr++; |
3186 | |
3187 | /* skip the raid level */ |
3188 | while (*chptr && !isspace(*chptr)) chptr++; |
3189 | while (*chptr && isspace(*chptr)) chptr++; |
3190 | |
3191 | /* everything else is partition stuff */ |
3192 | while (*chptr) { |
3193 | chptr2 = chptr; |
3194 | while (*chptr2 && *chptr2 != '[') chptr2++; |
3195 | if (!*chptr2) break; |
3196 | |
3197 | /* yank off the numbers at the end */ |
3198 | chptr2--; |
3199 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; |
3200 | chptr2++; |
3201 | *chptr2 = '\0'; |
3202 | |
3203 | /* Better, now we need the /dev/ back. We're done with |
3204 | * everything before this point, so we can just put |
3205 | * the /dev/ part there. There will always be room. */ |
3206 | memcpy(chptr - 5, "/dev/", 5); |
3207 | rc = checkDeviceBootloader(chptr - 5, boot); |
3208 | if (rc != 2) { |
3209 | return rc; |
3210 | } |
3211 | |
3212 | chptr = chptr2 + 1; |
3213 | /* skip the [11] bit */ |
3214 | while (*chptr && !isspace(*chptr)) chptr++; |
3215 | /* and move to the next one */ |
3216 | while (*chptr && isspace(*chptr)) chptr++; |
3217 | } |
3218 | |
3219 | /* we're good to go */ |
3220 | return 2; |
3221 | } |
3222 | |
3223 | chptr = end + 1; |
3224 | } |
3225 | |
3226 | fprintf(stderr, |
3227 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
3228 | mdDev); |
3229 | return 0; |
3230 | } |
3231 | |
3232 | int checkForLilo(struct grubConfig * config) { |
3233 | int fd; |
3234 | unsigned char boot[512]; |
3235 | struct singleLine * line; |
3236 | |
3237 | for (line = config->theLines; line; line = line->next) |
3238 | if (line->type == LT_BOOT) break; |
3239 | |
3240 | if (!line) { |
3241 | fprintf(stderr, |
3242 | _("grubby: no boot line found in lilo configuration\n")); |
3243 | return 1; |
3244 | } |
3245 | |
3246 | if (line->numElements != 2) return 1; |
3247 | |
3248 | fd = open("/boot/boot.b", O_RDONLY); |
3249 | if (fd < 0) { |
3250 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3251 | "/boot/boot.b", strerror(errno)); |
3252 | return 1; |
3253 | } |
3254 | |
3255 | if (read(fd, boot, 512) != 512) { |
3256 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3257 | "/boot/boot.b", strerror(errno)); |
3258 | return 1; |
3259 | } |
3260 | close(fd); |
3261 | |
3262 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
3263 | return checkLiloOnRaid(line->elements[1].item, boot); |
3264 | |
3265 | return checkDeviceBootloader(line->elements[1].item, boot); |
3266 | } |
3267 | |
3268 | int checkForGrub2(struct grubConfig * config) { |
3269 | if (!access("/etc/grub.d/", R_OK)) |
3270 | return 2; |
3271 | |
3272 | return 1; |
3273 | } |
3274 | |
3275 | int checkForGrub(struct grubConfig * config) { |
3276 | int fd; |
3277 | unsigned char bootSect[512]; |
3278 | char * boot; |
3279 | int onSuse = isSuseSystem(); |
3280 | |
3281 | |
3282 | if (onSuse) { |
3283 | if (parseSuseGrubConf(NULL, &boot)) |
3284 | return 0; |
3285 | } else { |
3286 | if (parseSysconfigGrub(NULL, &boot)) |
3287 | return 0; |
3288 | } |
3289 | |
3290 | /* assume grub is not installed -- not an error condition */ |
3291 | if (!boot) |
3292 | return 0; |
3293 | |
3294 | fd = open("/boot/grub/stage1", O_RDONLY); |
3295 | if (fd < 0) |
3296 | /* this doesn't exist if grub hasn't been installed */ |
3297 | return 0; |
3298 | |
3299 | if (read(fd, bootSect, 512) != 512) { |
3300 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3301 | "/boot/grub/stage1", strerror(errno)); |
3302 | close(fd); |
3303 | return 1; |
3304 | } |
3305 | close(fd); |
3306 | |
3307 | /* The more elaborate checks do not work on SuSE. The checks done |
3308 | * seem to be reasonble (at least for now), so just return success |
3309 | */ |
3310 | if (onSuse) |
3311 | return 2; |
3312 | |
3313 | return checkDeviceBootloader(boot, bootSect); |
3314 | } |
3315 | |
3316 | int checkForExtLinux(struct grubConfig * config) { |
3317 | int fd; |
3318 | unsigned char bootSect[512]; |
3319 | char * boot; |
3320 | char executable[] = "/boot/extlinux/extlinux"; |
3321 | |
3322 | printf("entered: checkForExtLinux()\n"); |
3323 | |
3324 | if (parseSysconfigGrub(NULL, &boot)) |
3325 | return 0; |
3326 | |
3327 | /* assume grub is not installed -- not an error condition */ |
3328 | if (!boot) |
3329 | return 0; |
3330 | |
3331 | fd = open(executable, O_RDONLY); |
3332 | if (fd < 0) |
3333 | /* this doesn't exist if grub hasn't been installed */ |
3334 | return 0; |
3335 | |
3336 | if (read(fd, bootSect, 512) != 512) { |
3337 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3338 | executable, strerror(errno)); |
3339 | return 1; |
3340 | } |
3341 | close(fd); |
3342 | |
3343 | return checkDeviceBootloader(boot, bootSect); |
3344 | } |
3345 | |
3346 | int checkForYaboot(struct grubConfig * config) { |
3347 | /* |
3348 | * This is a simplistic check that we consider good enough for own puporses |
3349 | * |
3350 | * If we were to properly check if yaboot is *installed* we'd need to: |
3351 | * 1) get the system boot device (LT_BOOT) |
3352 | * 2) considering it's a raw filesystem, check if the yaboot binary matches |
3353 | * the content on the boot device |
3354 | * 3) if not, copy the binary to a temporary file and run "addnote" on it |
3355 | * 4) check again if binary and boot device contents match |
3356 | */ |
3357 | if (!access("/etc/yaboot.conf", R_OK)) |
3358 | return 2; |
3359 | |
3360 | return 1; |
3361 | } |
3362 | |
3363 | int checkForElilo(struct grubConfig * config) { |
3364 | if (!access("/etc/elilo.conf", R_OK)) |
3365 | return 2; |
3366 | |
3367 | return 1; |
3368 | } |
3369 | |
3370 | static char * getRootSpecifier(char * str) { |
3371 | char * idx, * rootspec = NULL; |
3372 | |
3373 | if (*str == '(') { |
3374 | idx = rootspec = strdup(str); |
3375 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; |
3376 | *(++idx) = '\0'; |
3377 | } |
3378 | return rootspec; |
3379 | } |
3380 | |
3381 | static char * getInitrdVal(struct grubConfig * config, |
3382 | const char * prefix, struct singleLine *tmplLine, |
3383 | const char * newKernelInitrd, |
3384 | const char ** extraInitrds, int extraInitrdCount) |
3385 | { |
3386 | char *initrdVal, *end; |
3387 | int i; |
3388 | size_t totalSize; |
3389 | size_t prefixLen; |
3390 | char separatorChar; |
3391 | |
3392 | prefixLen = strlen(prefix); |
3393 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */; |
3394 | |
3395 | for (i = 0; i < extraInitrdCount; i++) { |
3396 | totalSize += sizeof(separatorChar); |
3397 | totalSize += strlen(extraInitrds[i]) - prefixLen; |
3398 | } |
3399 | |
3400 | initrdVal = end = malloc(totalSize); |
3401 | |
3402 | end = stpcpy (end, newKernelInitrd + prefixLen); |
3403 | |
3404 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; |
3405 | for (i = 0; i < extraInitrdCount; i++) { |
3406 | const char *extraInitrd; |
3407 | int j; |
3408 | |
3409 | extraInitrd = extraInitrds[i] + prefixLen; |
3410 | /* Don't add entries that are already there */ |
3411 | if (tmplLine != NULL) { |
3412 | for (j = 2; j < tmplLine->numElements; j++) |
3413 | if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0) |
3414 | break; |
3415 | |
3416 | if (j != tmplLine->numElements) |
3417 | continue; |
3418 | } |
3419 | |
3420 | *end++ = separatorChar; |
3421 | end = stpcpy(end, extraInitrd); |
3422 | } |
3423 | |
3424 | return initrdVal; |
3425 | } |
3426 | |
3427 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, |
3428 | const char * prefix, |
3429 | const char * newKernelPath, const char * newKernelTitle, |
3430 | const char * newKernelArgs, const char * newKernelInitrd, |
3431 | const char ** extraInitrds, int extraInitrdCount, |
3432 | const char * newMBKernel, const char * newMBKernelArgs) { |
3433 | struct singleEntry * new; |
3434 | struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL; |
3435 | int needs; |
3436 | char * chptr; |
3437 | |
3438 | if (!newKernelPath) return 0; |
3439 | |
3440 | /* if the newKernelTitle is too long silently munge it into something |
3441 | * we can live with. truncating is first check, then we'll just mess with |
3442 | * it until it looks better */ |
3443 | if (config->cfi->maxTitleLength && |
3444 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
3445 | char * buf = alloca(config->cfi->maxTitleLength + 7); |
3446 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); |
3447 | int i = 1; |
3448 | |
3449 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); |
3450 | while (findEntryByPath(config, buf, NULL, NULL)) { |
3451 | sprintf(numBuf, "%d", i++); |
3452 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
3453 | } |
3454 | |
3455 | newKernelTitle = buf + 6; |
3456 | } |
3457 | |
3458 | new = malloc(sizeof(*new)); |
3459 | new->skip = 0; |
3460 | new->multiboot = 0; |
3461 | new->next = config->entries; |
3462 | new->lines = NULL; |
3463 | config->entries = new; |
3464 | |
3465 | /* copy/update from the template */ |
3466 | needs = NEED_KERNEL | NEED_TITLE; |
3467 | if (newKernelInitrd) |
3468 | needs |= NEED_INITRD; |
3469 | if (newMBKernel) { |
3470 | needs |= NEED_MB; |
3471 | new->multiboot = 1; |
3472 | } |
3473 | |
3474 | if (template) { |
3475 | for (masterLine = template->lines; |
3476 | masterLine && (tmplLine = lineDup(masterLine)); |
3477 | lineFree(tmplLine), masterLine = masterLine->next) |
3478 | { |
3479 | dbgPrintf("addNewKernel processing %d\n", tmplLine->type); |
3480 | |
3481 | /* skip comments */ |
3482 | chptr = tmplLine->indent; |
3483 | while (*chptr && isspace(*chptr)) chptr++; |
3484 | if (*chptr == '#') continue; |
3485 | |
3486 | if (iskernel(tmplLine->type) && tmplLine->numElements >= 2) { |
3487 | if (!template->multiboot && (needs & NEED_MB)) { |
3488 | /* it's not a multiboot template and this is the kernel |
3489 | * line. Try to be intelligent about inserting the |
3490 | * hypervisor at the same time. |
3491 | */ |
3492 | if (config->cfi->mbHyperFirst) { |
3493 | /* insert the hypervisor first */ |
3494 | newLine = addLine(new, config->cfi, LT_HYPER, |
3495 | tmplLine->indent, |
3496 | newMBKernel + strlen(prefix)); |
3497 | /* set up for adding the kernel line */ |
3498 | free(tmplLine->indent); |
3499 | tmplLine->indent = strdup(config->secondaryIndent); |
3500 | needs &= ~NEED_MB; |
3501 | } |
3502 | if (needs & NEED_KERNEL) { |
3503 | /* use addLineTmpl to preserve line elements, |
3504 | * otherwise we could just call addLine. Unfortunately |
3505 | * this means making some changes to the template |
3506 | * such as the indent change above and the type |
3507 | * change below. |
3508 | */ |
3509 | struct keywordTypes * mbm_kw = |
3510 | getKeywordByType(LT_MBMODULE, config->cfi); |
3511 | if (mbm_kw) { |
3512 | tmplLine->type = LT_MBMODULE; |
3513 | free(tmplLine->elements[0].item); |
3514 | tmplLine->elements[0].item = strdup(mbm_kw->key); |
3515 | } |
3516 | newLine = addLineTmpl(new, tmplLine, newLine, |
3517 | newKernelPath + strlen(prefix), config->cfi); |
3518 | needs &= ~NEED_KERNEL; |
3519 | } |
3520 | if (needs & NEED_MB) { /* !mbHyperFirst */ |
3521 | newLine = addLine(new, config->cfi, LT_HYPER, |
3522 | config->secondaryIndent, |
3523 | newMBKernel + strlen(prefix)); |
3524 | needs &= ~NEED_MB; |
3525 | } |
3526 | } else if (needs & NEED_KERNEL) { |
3527 | newLine = addLineTmpl(new, tmplLine, newLine, |
3528 | newKernelPath + strlen(prefix), config->cfi); |
3529 | needs &= ~NEED_KERNEL; |
3530 | } |
3531 | |
3532 | } else if (tmplLine->type == LT_HYPER && |
3533 | tmplLine->numElements >= 2) { |
3534 | if (needs & NEED_MB) { |
3535 | newLine = addLineTmpl(new, tmplLine, newLine, |
3536 | newMBKernel + strlen(prefix), config->cfi); |
3537 | needs &= ~NEED_MB; |
3538 | } |
3539 | |
3540 | } else if (tmplLine->type == LT_MBMODULE && |
3541 | tmplLine->numElements >= 2) { |
3542 | if (new->multiboot) { |
3543 | if (needs & NEED_KERNEL) { |
3544 | newLine = addLineTmpl(new, tmplLine, newLine, |
3545 | newKernelPath + |
3546 | strlen(prefix), config->cfi); |
3547 | needs &= ~NEED_KERNEL; |
3548 | } else if (config->cfi->mbInitRdIsModule && |
3549 | (needs & NEED_INITRD)) { |
3550 | char *initrdVal; |
3551 | initrdVal = getInitrdVal(config, prefix, tmplLine, |
3552 | newKernelInitrd, extraInitrds, |
3553 | extraInitrdCount); |
3554 | newLine = addLineTmpl(new, tmplLine, newLine, |
3555 | initrdVal, config->cfi); |
3556 | free(initrdVal); |
3557 | needs &= ~NEED_INITRD; |
3558 | } |
3559 | } else if (needs & NEED_KERNEL) { |
3560 | /* template is multi but new is not, |
3561 | * insert the kernel in the first module slot |
3562 | */ |
3563 | tmplLine->type = preferredLineType(LT_KERNEL, config->cfi); |
3564 | free(tmplLine->elements[0].item); |
3565 | tmplLine->elements[0].item = |
3566 | strdup(getKeywordByType(tmplLine->type, |
3567 | config->cfi)->key); |
3568 | newLine = addLineTmpl(new, tmplLine, newLine, |
3569 | newKernelPath + strlen(prefix), |
3570 | config->cfi); |
3571 | needs &= ~NEED_KERNEL; |
3572 | } else if (needs & NEED_INITRD) { |
3573 | char *initrdVal; |
3574 | /* template is multi but new is not, |
3575 | * insert the initrd in the second module slot |
3576 | */ |
3577 | tmplLine->type = preferredLineType(LT_INITRD, config->cfi); |
3578 | free(tmplLine->elements[0].item); |
3579 | tmplLine->elements[0].item = |
3580 | strdup(getKeywordByType(tmplLine->type, |
3581 | config->cfi)->key); |
3582 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3583 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3584 | free(initrdVal); |
3585 | needs &= ~NEED_INITRD; |
3586 | } |
3587 | |
3588 | } else if (isinitrd(tmplLine->type) && tmplLine->numElements >= 2) { |
3589 | if (needs & NEED_INITRD && |
3590 | new->multiboot && !template->multiboot && |
3591 | config->cfi->mbInitRdIsModule) { |
3592 | /* make sure we don't insert the module initrd |
3593 | * before the module kernel... if we don't do it here, |
3594 | * it will be inserted following the template. |
3595 | */ |
3596 | if (!needs & NEED_KERNEL) { |
3597 | char *initrdVal; |
3598 | |
3599 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3600 | newLine = addLine(new, config->cfi, LT_MBMODULE, |
3601 | config->secondaryIndent, |
3602 | initrdVal); |
3603 | free(initrdVal); |
3604 | needs &= ~NEED_INITRD; |
3605 | } |
3606 | } else if (needs & NEED_INITRD) { |
3607 | char *initrdVal; |
3608 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3609 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3610 | free(initrdVal); |
3611 | needs &= ~NEED_INITRD; |
3612 | } |
3613 | |
3614 | } else if (tmplLine->type == LT_MENUENTRY && |
3615 | (needs & NEED_TITLE)) { |
3616 | requote(tmplLine, config->cfi); |
3617 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3618 | strcpy(nkt, "'"); |
3619 | strcat(nkt, newKernelTitle); |
3620 | strcat(nkt, "'"); |
3621 | newLine = addLineTmpl(new, tmplLine, newLine, nkt, config->cfi); |
3622 | free(nkt); |
3623 | needs &= ~NEED_TITLE; |
3624 | } else if (tmplLine->type == LT_TITLE && |
3625 | (needs & NEED_TITLE)) { |
3626 | if (tmplLine->numElements >= 2) { |
3627 | newLine = addLineTmpl(new, tmplLine, newLine, |
3628 | newKernelTitle, config->cfi); |
3629 | needs &= ~NEED_TITLE; |
3630 | } else if (tmplLine->numElements == 1 && |
3631 | config->cfi->titleBracketed) { |
3632 | /* addLineTmpl doesn't handle titleBracketed */ |
3633 | newLine = addLine(new, config->cfi, LT_TITLE, |
3634 | tmplLine->indent, newKernelTitle); |
3635 | needs &= ~NEED_TITLE; |
3636 | } |
3637 | } else if (tmplLine->type == LT_ECHO) { |
3638 | requote(tmplLine, config->cfi); |
3639 | static const char *prefix = "'Loading "; |
3640 | if (tmplLine->numElements > 1 && |
3641 | strstr(tmplLine->elements[1].item, prefix) && |
3642 | masterLine->next && |
3643 | iskernel(masterLine->next->type)) { |
3644 | char *newTitle = malloc(strlen(prefix) + |
3645 | strlen(newKernelTitle) + 2); |
3646 | |
3647 | strcpy(newTitle, prefix); |
3648 | strcat(newTitle, newKernelTitle); |
3649 | strcat(newTitle, "'"); |
3650 | newLine = addLine(new, config->cfi, LT_ECHO, |
3651 | tmplLine->indent, newTitle); |
3652 | free(newTitle); |
3653 | } else { |
3654 | /* pass through other lines from the template */ |
3655 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, |
3656 | config->cfi); |
3657 | } |
3658 | } else { |
3659 | /* pass through other lines from the template */ |
3660 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); |
3661 | } |
3662 | } |
3663 | |
3664 | } else { |
3665 | /* don't have a template, so start the entry with the |
3666 | * appropriate starting line |
3667 | */ |
3668 | switch (config->cfi->entryStart) { |
3669 | case LT_KERNEL: |
3670 | case LT_KERNEL_EFI: |
3671 | if (new->multiboot && config->cfi->mbHyperFirst) { |
3672 | /* fall through to LT_HYPER */ |
3673 | } else { |
3674 | newLine = addLine(new, config->cfi, |
3675 | preferredLineType(LT_KERNEL, config->cfi), |
3676 | config->primaryIndent, |
3677 | newKernelPath + strlen(prefix)); |
3678 | needs &= ~NEED_KERNEL; |
3679 | break; |
3680 | } |
3681 | |
3682 | case LT_HYPER: |
3683 | newLine = addLine(new, config->cfi, LT_HYPER, |
3684 | config->primaryIndent, |
3685 | newMBKernel + strlen(prefix)); |
3686 | needs &= ~NEED_MB; |
3687 | break; |
3688 | |
3689 | case LT_MENUENTRY: { |
3690 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3691 | strcpy(nkt, "'"); |
3692 | strcat(nkt, newKernelTitle); |
3693 | strcat(nkt, "'"); |
3694 | newLine = addLine(new, config->cfi, LT_MENUENTRY, |
3695 | config->primaryIndent, nkt); |
3696 | free(nkt); |
3697 | needs &= ~NEED_TITLE; |
3698 | needs |= NEED_END; |
3699 | break; |
3700 | } |
3701 | case LT_TITLE: |
3702 | if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above) |
3703 | char * templabel; |
3704 | int x = 0, y = 0; |
3705 | |
3706 | templabel = strdup(newKernelTitle); |
3707 | while( templabel[x]){ |
3708 | if( templabel[x] == ' ' ){ |
3709 | y = x; |
3710 | while( templabel[y] ){ |
3711 | templabel[y] = templabel[y+1]; |
3712 | y++; |
3713 | } |
3714 | } |
3715 | x++; |
3716 | } |
3717 | newLine = addLine(new, config->cfi, LT_TITLE, |
3718 | config->primaryIndent, templabel); |
3719 | free(templabel); |
3720 | }else{ |
3721 | newLine = addLine(new, config->cfi, LT_TITLE, |
3722 | config->primaryIndent, newKernelTitle); |
3723 | } |
3724 | needs &= ~NEED_TITLE; |
3725 | break; |
3726 | |
3727 | default: |
3728 | abort(); |
3729 | } |
3730 | } |
3731 | |
3732 | /* add the remainder of the lines, i.e. those that either |
3733 | * weren't present in the template, or in the case of no template, |
3734 | * all the lines following the entryStart. |
3735 | */ |
3736 | if (needs & NEED_TITLE) { |
3737 | newLine = addLine(new, config->cfi, LT_TITLE, |
3738 | config->secondaryIndent, |
3739 | newKernelTitle); |
3740 | needs &= ~NEED_TITLE; |
3741 | } |
3742 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
3743 | newLine = addLine(new, config->cfi, LT_HYPER, |
3744 | config->secondaryIndent, |
3745 | newMBKernel + strlen(prefix)); |
3746 | needs &= ~NEED_MB; |
3747 | } |
3748 | if (needs & NEED_KERNEL) { |
3749 | newLine = addLine(new, config->cfi, |
3750 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3751 | config->cfi)) |
3752 | ? LT_MBMODULE |
3753 | : preferredLineType(LT_KERNEL, config->cfi), |
3754 | config->secondaryIndent, |
3755 | newKernelPath + strlen(prefix)); |
3756 | needs &= ~NEED_KERNEL; |
3757 | } |
3758 | if (needs & NEED_MB) { |
3759 | newLine = addLine(new, config->cfi, LT_HYPER, |
3760 | config->secondaryIndent, |
3761 | newMBKernel + strlen(prefix)); |
3762 | needs &= ~NEED_MB; |
3763 | } |
3764 | if (needs & NEED_INITRD) { |
3765 | char *initrdVal; |
3766 | initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount); |
3767 | newLine = addLine(new, config->cfi, |
3768 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3769 | config->cfi)) |
3770 | ? LT_MBMODULE |
3771 | : preferredLineType(LT_INITRD, config->cfi), |
3772 | config->secondaryIndent, |
3773 | initrdVal); |
3774 | free(initrdVal); |
3775 | needs &= ~NEED_INITRD; |
3776 | } |
3777 | if (needs & NEED_END) { |
3778 | newLine = addLine(new, config->cfi, LT_ENTRY_END, |
3779 | config->secondaryIndent, NULL); |
3780 | needs &= ~NEED_END; |
3781 | } |
3782 | |
3783 | if (needs) { |
3784 | printf(_("grubby: needs=%d, aborting\n"), needs); |
3785 | abort(); |
3786 | } |
3787 | |
3788 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, |
3789 | newMBKernelArgs, NULL)) return 1; |
3790 | |
3791 | return 0; |
3792 | } |
3793 | |
3794 | static void traceback(int signum) |
3795 | { |
3796 | void *array[40]; |
3797 | size_t size; |
3798 | |
3799 | signal(SIGSEGV, SIG_DFL); |
3800 | memset(array, '\0', sizeof (array)); |
3801 | size = backtrace(array, 40); |
3802 | |
3803 | fprintf(stderr, "grubby received SIGSEGV! Backtrace (%ld):\n", |
3804 | (unsigned long)size); |
3805 | backtrace_symbols_fd(array, size, STDERR_FILENO); |
3806 | exit(1); |
3807 | } |
3808 | |
3809 | int main(int argc, const char ** argv) { |
3810 | poptContext optCon; |
3811 | const char * grubConfig = NULL; |
3812 | char * outputFile = NULL; |
3813 | int arg = 0; |
3814 | int flags = 0; |
3815 | int badImageOkay = 0; |
3816 | int configureGrub2 = 0; |
3817 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
3818 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
3819 | int configureExtLinux = 0; |
3820 | int bootloaderProbe = 0; |
3821 | int extraInitrdCount = 0; |
3822 | char * updateKernelPath = NULL; |
3823 | char * newKernelPath = NULL; |
3824 | char * removeKernelPath = NULL; |
3825 | char * newKernelArgs = NULL; |
3826 | char * newKernelInitrd = NULL; |
3827 | char * newKernelTitle = NULL; |
3828 | char * newKernelVersion = NULL; |
3829 | char * newMBKernel = NULL; |
3830 | char * newMBKernelArgs = NULL; |
3831 | char * removeMBKernelArgs = NULL; |
3832 | char * removeMBKernel = NULL; |
3833 | char * bootPrefix = NULL; |
3834 | char * defaultKernel = NULL; |
3835 | char * removeArgs = NULL; |
3836 | char * kernelInfo = NULL; |
3837 | char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
3838 | const char * chptr = NULL; |
3839 | struct configFileInfo * cfi = NULL; |
3840 | struct grubConfig * config; |
3841 | struct singleEntry * template = NULL; |
3842 | int copyDefault = 0, makeDefault = 0; |
3843 | int displayDefault = 0; |
3844 | int displayDefaultIndex = 0; |
3845 | int displayDefaultTitle = 0; |
3846 | int defaultIndex = -1; |
3847 | struct poptOption options[] = { |
3848 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
3849 | _("add an entry for the specified kernel"), _("kernel-path") }, |
3850 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
3851 | _("add an entry for the specified multiboot kernel"), NULL }, |
3852 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
3853 | _("default arguments for the new kernel or new arguments for " |
3854 | "kernel being updated"), _("args") }, |
3855 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
3856 | _("default arguments for the new multiboot kernel or " |
3857 | "new arguments for multiboot kernel being updated"), NULL }, |
3858 | { "bad-image-okay", 0, 0, &badImageOkay, 0, |
3859 | _("don't sanity check images in boot entries (for testing only)"), |
3860 | NULL }, |
3861 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
3862 | _("filestystem which contains /boot directory (for testing only)"), |
3863 | _("bootfs") }, |
3864 | #if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__) |
3865 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
3866 | _("check which bootloader is installed on boot sector") }, |
3867 | #endif |
3868 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
3869 | _("path to grub config file to update (\"-\" for stdin)"), |
3870 | _("path") }, |
3871 | { "copy-default", 0, 0, ©Default, 0, |
3872 | _("use the default boot entry as a template for the new entry " |
3873 | "being added; if the default is not a linux image, or if " |
3874 | "the kernel referenced by the default image does not exist, " |
3875 | "the first linux entry whose kernel does exist is used as the " |
3876 | "template"), NULL }, |
3877 | { "debug", 0, 0, &debug, 0, |
3878 | _("print debugging information for failures") }, |
3879 | { "default-kernel", 0, 0, &displayDefault, 0, |
3880 | _("display the path of the default kernel") }, |
3881 | { "default-index", 0, 0, &displayDefaultIndex, 0, |
3882 | _("display the index of the default kernel") }, |
3883 | { "default-title", 0, 0, &displayDefaultTitle, 0, |
3884 | _("display the title of the default kernel") }, |
3885 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
3886 | _("configure elilo bootloader") }, |
3887 | { "efi", 0, POPT_ARG_NONE, &isEfi, 0, |
3888 | _("force grub2 stanzas to use efi") }, |
3889 | { "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
3890 | _("configure extlinux bootloader (from syslinux)") }, |
3891 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
3892 | _("configure grub bootloader") }, |
3893 | { "grub2", 0, POPT_ARG_NONE, &configureGrub2, 0, |
3894 | _("configure grub2 bootloader") }, |
3895 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
3896 | _("display boot information for specified kernel"), |
3897 | _("kernel-path") }, |
3898 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
3899 | _("initrd image for the new kernel"), _("initrd-path") }, |
3900 | { "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
3901 | _("auxiliary initrd image for things other than the new kernel"), _("initrd-path") }, |
3902 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
3903 | _("configure lilo bootloader") }, |
3904 | { "make-default", 0, 0, &makeDefault, 0, |
3905 | _("make the newly added entry the default boot entry"), NULL }, |
3906 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
3907 | _("path to output updated config file (\"-\" for stdout)"), |
3908 | _("path") }, |
3909 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
3910 | _("remove kernel arguments"), NULL }, |
3911 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
3912 | _("remove multiboot kernel arguments"), NULL }, |
3913 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
3914 | _("remove all entries for the specified kernel"), |
3915 | _("kernel-path") }, |
3916 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
3917 | _("remove all entries for the specified multiboot kernel"), NULL }, |
3918 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
3919 | _("make the first entry referencing the specified kernel " |
3920 | "the default"), _("kernel-path") }, |
3921 | { "set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0, |
3922 | _("make the given entry index the default entry"), |
3923 | _("entry-index") }, |
3924 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
3925 | _("configure silo bootloader") }, |
3926 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
3927 | _("title to use for the new kernel entry"), _("entry-title") }, |
3928 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
3929 | _("updated information for the specified kernel"), |
3930 | _("kernel-path") }, |
3931 | { "version", 'v', 0, NULL, 'v', |
3932 | _("print the version of this program and exit"), NULL }, |
3933 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
3934 | _("configure yaboot bootloader") }, |
3935 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
3936 | _("configure zipl bootloader") }, |
3937 | POPT_AUTOHELP |
3938 | { 0, 0, 0, 0, 0 } |
3939 | }; |
3940 | |
3941 | useextlinuxmenu=0; |
3942 | |
3943 | signal(SIGSEGV, traceback); |
3944 | |
3945 | int i = 0; |
3946 | for (int j = 1; j < argc; j++) |
3947 | i += strlen(argv[j]) + 1; |
3948 | saved_command_line = malloc(i); |
3949 | if (!saved_command_line) { |
3950 | fprintf(stderr, "grubby: %m\n"); |
3951 | exit(1); |
3952 | } |
3953 | saved_command_line[0] = '\0'; |
3954 | for (int j = 1; j < argc; j++) { |
3955 | strcat(saved_command_line, argv[j]); |
3956 | strncat(saved_command_line, j == argc -1 ? "" : " ", 1); |
3957 | } |
3958 | |
3959 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
3960 | poptReadDefaultConfig(optCon, 1); |
3961 | |
3962 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
3963 | switch (arg) { |
3964 | case 'v': |
3965 | printf("grubby version %s\n", VERSION); |
3966 | exit(0); |
3967 | break; |
3968 | case 'i': |
3969 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { |
3970 | extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon)); |
3971 | } else { |
3972 | fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount); |
3973 | return 1; |
3974 | } |
3975 | break; |
3976 | } |
3977 | } |
3978 | |
3979 | if (arg < -1) { |
3980 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
3981 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
3982 | poptStrerror(arg)); |
3983 | return 1; |
3984 | } |
3985 | |
3986 | if ((chptr = poptGetArg(optCon))) { |
3987 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
3988 | return 1; |
3989 | } |
3990 | |
3991 | if ((configureLilo + configureGrub2 + configureGrub + configureELilo + |
3992 | configureYaboot + configureSilo + configureZipl + |
3993 | configureExtLinux ) > 1) { |
3994 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); |
3995 | return 1; |
3996 | } else if (bootloaderProbe && grubConfig) { |
3997 | fprintf(stderr, |
3998 | _("grubby: cannot specify config file with --bootloader-probe\n")); |
3999 | return 1; |
4000 | } else if (configureGrub2) { |
4001 | cfi = &grub2ConfigType; |
4002 | } else if (configureLilo) { |
4003 | cfi = &liloConfigType; |
4004 | } else if (configureGrub) { |
4005 | cfi = &grubConfigType; |
4006 | } else if (configureELilo) { |
4007 | cfi = &eliloConfigType; |
4008 | } else if (configureYaboot) { |
4009 | cfi = &yabootConfigType; |
4010 | } else if (configureSilo) { |
4011 | cfi = &siloConfigType; |
4012 | } else if (configureZipl) { |
4013 | cfi = &ziplConfigType; |
4014 | } else if (configureExtLinux) { |
4015 | cfi = &extlinuxConfigType; |
4016 | useextlinuxmenu=1; |
4017 | } |
4018 | |
4019 | if (!cfi) { |
4020 | if (grub2FindConfig(&grub2ConfigType)) |
4021 | cfi = &grub2ConfigType; |
4022 | else |
4023 | #ifdef __ia64__ |
4024 | cfi = &eliloConfigType; |
4025 | #elif __powerpc__ |
4026 | cfi = &yabootConfigType; |
4027 | #elif __sparc__ |
4028 | cfi = &siloConfigType; |
4029 | #elif __s390__ |
4030 | cfi = &ziplConfigType; |
4031 | #elif __s390x__ |
4032 | cfi = &ziplConfigtype; |
4033 | #else |
4034 | cfi = &grubConfigType; |
4035 | #endif |
4036 | } |
4037 | |
4038 | if (!grubConfig) { |
4039 | if (cfi->findConfig) |
4040 | grubConfig = cfi->findConfig(cfi); |
4041 | if (!grubConfig) |
4042 | grubConfig = cfi->defaultConfig; |
4043 | } |
4044 | |
4045 | if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion || |
4046 | newKernelPath || removeKernelPath || makeDefault || |
4047 | defaultKernel || displayDefaultIndex || displayDefaultTitle || |
4048 | (defaultIndex >= 0))) { |
4049 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " |
4050 | "specified option")); |
4051 | return 1; |
4052 | } |
4053 | |
4054 | if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath || |
4055 | removeKernelPath)) { |
4056 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
4057 | "be used when adding or removing kernels\n")); |
4058 | return 1; |
4059 | } |
4060 | |
4061 | if (newKernelPath && !newKernelTitle) { |
4062 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
4063 | return 1; |
4064 | } else if (!newKernelPath && (newKernelTitle || copyDefault || |
4065 | (newKernelInitrd && !updateKernelPath)|| |
4066 | makeDefault || extraInitrdCount > 0)) { |
4067 | fprintf(stderr, _("grubby: kernel path expected\n")); |
4068 | return 1; |
4069 | } |
4070 | |
4071 | if (newKernelPath && updateKernelPath) { |
4072 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
4073 | "not be used together")); |
4074 | return 1; |
4075 | } |
4076 | |
4077 | if (makeDefault && defaultKernel) { |
4078 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
4079 | "may not be used together\n")); |
4080 | return 1; |
4081 | } else if (defaultKernel && removeKernelPath && |
4082 | !strcmp(defaultKernel, removeKernelPath)) { |
4083 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); |
4084 | return 1; |
4085 | } else if (defaultKernel && newKernelPath && |
4086 | !strcmp(defaultKernel, newKernelPath)) { |
4087 | makeDefault = 1; |
4088 | defaultKernel = NULL; |
4089 | } |
4090 | else if (defaultKernel && (defaultIndex >= 0)) { |
4091 | fprintf(stderr, _("grubby: --set-default and --set-default-index " |
4092 | "may not be used together\n")); |
4093 | return 1; |
4094 | } |
4095 | |
4096 | if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) { |
4097 | fprintf(stderr, _("grubby: output file must be specified if stdin " |
4098 | "is used\n")); |
4099 | return 1; |
4100 | } |
4101 | |
4102 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel |
4103 | && !kernelInfo && !bootloaderProbe && !updateKernelPath |
4104 | && !removeMBKernel && !displayDefaultIndex && !displayDefaultTitle |
4105 | && (defaultIndex == -1)) { |
4106 | fprintf(stderr, _("grubby: no action specified\n")); |
4107 | return 1; |
4108 | } |
4109 | |
4110 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
4111 | |
4112 | if (cfi->needsBootPrefix) { |
4113 | if (!bootPrefix) { |
4114 | bootPrefix = findBootPrefix(); |
4115 | if (!bootPrefix) return 1; |
4116 | } else { |
4117 | /* this shouldn't end with a / */ |
4118 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
4119 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
4120 | } |
4121 | } else { |
4122 | bootPrefix = ""; |
4123 | } |
4124 | |
4125 | if (!cfi->mbAllowExtraInitRds && |
4126 | extraInitrdCount > 0) { |
4127 | fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig); |
4128 | return 1; |
4129 | } |
4130 | |
4131 | if (bootloaderProbe) { |
4132 | int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0; |
4133 | struct grubConfig * lconfig, * gconfig, * yconfig, * econfig; |
4134 | |
4135 | const char *grub2config = grub2FindConfig(&grub2ConfigType); |
4136 | if (grub2config) { |
4137 | gconfig = readConfig(grub2config, &grub2ConfigType); |
4138 | if (!gconfig) |
4139 | gr2c = 1; |
4140 | else |
4141 | gr2c = checkForGrub2(gconfig); |
4142 | } |
4143 | |
4144 | const char *grubconfig = grubFindConfig(&grubConfigType); |
4145 | if (!access(grubconfig, F_OK)) { |
4146 | gconfig = readConfig(grubconfig, &grubConfigType); |
4147 | if (!gconfig) |
4148 | grc = 1; |
4149 | else |
4150 | grc = checkForGrub(gconfig); |
4151 | } |
4152 | |
4153 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
4154 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); |
4155 | if (!lconfig) |
4156 | lrc = 1; |
4157 | else |
4158 | lrc = checkForLilo(lconfig); |
4159 | } |
4160 | |
4161 | if (!access(eliloConfigType.defaultConfig, F_OK)) { |
4162 | econfig = readConfig(eliloConfigType.defaultConfig, |
4163 | &eliloConfigType); |
4164 | if (!econfig) |
4165 | erc = 1; |
4166 | else |
4167 | erc = checkForElilo(econfig); |
4168 | } |
4169 | |
4170 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
4171 | lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType); |
4172 | if (!lconfig) |
4173 | extrc = 1; |
4174 | else |
4175 | extrc = checkForExtLinux(lconfig); |
4176 | } |
4177 | |
4178 | |
4179 | if (!access(yabootConfigType.defaultConfig, F_OK)) { |
4180 | yconfig = readConfig(yabootConfigType.defaultConfig, |
4181 | &yabootConfigType); |
4182 | if (!yconfig) |
4183 | yrc = 1; |
4184 | else |
4185 | yrc = checkForYaboot(yconfig); |
4186 | } |
4187 | |
4188 | if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1 || |
4189 | erc == 1) |
4190 | return 1; |
4191 | |
4192 | if (lrc == 2) printf("lilo\n"); |
4193 | if (gr2c == 2) printf("grub2\n"); |
4194 | if (grc == 2) printf("grub\n"); |
4195 | if (extrc == 2) printf("extlinux\n"); |
4196 | if (yrc == 2) printf("yaboot\n"); |
4197 | if (erc == 2) printf("elilo\n"); |
4198 | |
4199 | return 0; |
4200 | } |
4201 | |
4202 | if (grubConfig == NULL) { |
4203 | printf("Could not find bootloader configuration file.\n"); |
4204 | exit(1); |
4205 | } |
4206 | |
4207 | config = readConfig(grubConfig, cfi); |
4208 | if (!config) return 1; |
4209 | |
4210 | if (displayDefault) { |
4211 | struct singleLine * line; |
4212 | struct singleEntry * entry; |
4213 | char * rootspec; |
4214 | |
4215 | if (config->defaultImage == -1) return 0; |
4216 | entry = findEntryByIndex(config, config->defaultImage); |
4217 | if (!entry) return 0; |
4218 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; |
4219 | |
4220 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
4221 | if (!line) return 0; |
4222 | |
4223 | rootspec = getRootSpecifier(line->elements[1].item); |
4224 | printf("%s%s\n", bootPrefix, line->elements[1].item + |
4225 | ((rootspec != NULL) ? strlen(rootspec) : 0)); |
4226 | |
4227 | return 0; |
4228 | |
4229 | } else if (displayDefaultTitle) { |
4230 | struct singleLine * line; |
4231 | struct singleEntry * entry; |
4232 | |
4233 | if (config->defaultImage == -1) return 0; |
4234 | entry = findEntryByIndex(config, config->defaultImage); |
4235 | if (!entry) return 0; |
4236 | |
4237 | if (!configureGrub2) { |
4238 | line = getLineByType(LT_TITLE, entry->lines); |
4239 | if (!line) return 0; |
4240 | printf("%s\n", line->elements[1].item); |
4241 | |
4242 | } else { |
4243 | char * title; |
4244 | |
4245 | dbgPrintf("This is GRUB2, default title is embeded in menuentry\n"); |
4246 | line = getLineByType(LT_MENUENTRY, entry->lines); |
4247 | if (!line) return 0; |
4248 | title = grub2ExtractTitle(line); |
4249 | if (title) |
4250 | printf("%s\n", title); |
4251 | } |
4252 | return 0; |
4253 | |
4254 | } else if (displayDefaultIndex) { |
4255 | if (config->defaultImage == -1) return 0; |
4256 | printf("%i\n", config->defaultImage); |
4257 | return 0; |
4258 | |
4259 | } else if (kernelInfo) |
4260 | return displayInfo(config, kernelInfo, bootPrefix); |
4261 | |
4262 | if (copyDefault) { |
4263 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
4264 | if (!template) return 1; |
4265 | } |
4266 | |
4267 | markRemovedImage(config, removeKernelPath, bootPrefix); |
4268 | markRemovedImage(config, removeMBKernel, bootPrefix); |
4269 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, |
4270 | bootPrefix, flags, defaultIndex); |
4271 | setFallbackImage(config, newKernelPath != NULL); |
4272 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
4273 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; |
4274 | if (updateKernelPath && newKernelInitrd) { |
4275 | if (updateInitrd(config, updateKernelPath, bootPrefix, |
4276 | newKernelInitrd)) return 1; |
4277 | } |
4278 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
4279 | newKernelTitle, newKernelArgs, newKernelInitrd, |
4280 | (const char **)extraInitrds, extraInitrdCount, |
4281 | newMBKernel, newMBKernelArgs)) return 1; |
4282 | |
4283 | |
4284 | if (numEntries(config) == 0) { |
4285 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " |
4286 | "Not writing out new config.\n")); |
4287 | return 1; |
4288 | } |
4289 | |
4290 | if (!outputFile) |
4291 | outputFile = (char *)grubConfig; |
4292 | |
4293 | return writeConfig(config, outputFile, bootPrefix); |
4294 | } |