Contents of /trunk/grubby/grubby.c
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Mon Apr 16 17:46:40 2012 UTC (12 years, 5 months ago) by niro
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Mon Apr 16 17:46:40 2012 UTC (12 years, 5 months ago) by niro
File MIME type: text/plain
File size: 105046 byte(s)
Use "isquote" where appropriate.
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 | #ifndef DEBUG |
40 | #define DEBUG 0 |
41 | #endif |
42 | |
43 | #if DEBUG |
44 | #define dbgPrintf(format, args...) fprintf(stderr, format , ## args) |
45 | #else |
46 | #define dbgPrintf(format, args...) |
47 | #endif |
48 | |
49 | int debug = 0; /* Currently just for template debugging */ |
50 | |
51 | #define _(A) (A) |
52 | |
53 | #define MAX_EXTRA_INITRDS 16 /* code segment checked by --bootloader-probe */ |
54 | #define CODE_SEG_SIZE 128 /* code segment checked by --bootloader-probe */ |
55 | |
56 | #define NOOP_OPCODE 0x90 |
57 | #define JMP_SHORT_OPCODE 0xeb |
58 | |
59 | /* comments get lumped in with indention */ |
60 | struct lineElement { |
61 | char * item; |
62 | char * indent; |
63 | }; |
64 | |
65 | enum lineType_e { |
66 | LT_WHITESPACE = 1 << 0, |
67 | LT_TITLE = 1 << 1, |
68 | LT_KERNEL = 1 << 2, |
69 | LT_INITRD = 1 << 3, |
70 | LT_HYPER = 1 << 4, |
71 | LT_DEFAULT = 1 << 5, |
72 | LT_MBMODULE = 1 << 6, |
73 | LT_ROOT = 1 << 7, |
74 | LT_FALLBACK = 1 << 8, |
75 | LT_KERNELARGS = 1 << 9, |
76 | LT_BOOT = 1 << 10, |
77 | LT_BOOTROOT = 1 << 11, |
78 | LT_LBA = 1 << 12, |
79 | LT_OTHER = 1 << 13, |
80 | LT_GENERIC = 1 << 14, |
81 | LT_ECHO = 1 << 16, |
82 | LT_MENUENTRY = 1 << 17, |
83 | LT_ENTRY_END = 1 << 18, |
84 | LT_SET_VARIABLE = 1 << 19, |
85 | LT_UNKNOWN = 1 << 20, |
86 | }; |
87 | |
88 | struct singleLine { |
89 | char * indent; |
90 | int numElements; |
91 | struct lineElement * elements; |
92 | struct singleLine * next; |
93 | enum lineType_e type; |
94 | }; |
95 | |
96 | struct singleEntry { |
97 | struct singleLine * lines; |
98 | int skip; |
99 | int multiboot; |
100 | struct singleEntry * next; |
101 | }; |
102 | |
103 | #define GRUBBY_BADIMAGE_OKAY (1 << 0) |
104 | |
105 | #define GRUB_CONFIG_NO_DEFAULT (1 << 0) /* don't write out default=0 */ |
106 | |
107 | /* These defines are (only) used in addNewKernel() */ |
108 | #define NEED_KERNEL (1 << 0) |
109 | #define NEED_INITRD (1 << 1) |
110 | #define NEED_TITLE (1 << 2) |
111 | #define NEED_ARGS (1 << 3) |
112 | #define NEED_MB (1 << 4) |
113 | #define NEED_END (1 << 5) |
114 | |
115 | #define MAIN_DEFAULT (1 << 0) |
116 | #define DEFAULT_SAVED -2 |
117 | #define DEFAULT_SAVED_GRUB2 -3 |
118 | |
119 | struct keywordTypes { |
120 | char * key; |
121 | enum lineType_e type; |
122 | char nextChar; |
123 | char separatorChar; |
124 | }; |
125 | |
126 | struct configFileInfo; |
127 | |
128 | typedef const char *(*findConfigFunc)(struct configFileInfo *); |
129 | typedef const int (*writeLineFunc)(struct configFileInfo *, |
130 | struct singleLine *line); |
131 | |
132 | struct configFileInfo { |
133 | char * defaultConfig; |
134 | findConfigFunc findConfig; |
135 | writeLineFunc writeLine; |
136 | struct keywordTypes * keywords; |
137 | int defaultIsIndex; |
138 | int defaultIsVariable; |
139 | int defaultSupportSaved; |
140 | enum lineType_e entryStart; |
141 | enum lineType_e entryEnd; |
142 | int needsBootPrefix; |
143 | int argsInQuotes; |
144 | int maxTitleLength; |
145 | int titleBracketed; |
146 | int titlePosition; |
147 | int mbHyperFirst; |
148 | int mbInitRdIsModule; |
149 | int mbConcatArgs; |
150 | int mbAllowExtraInitRds; |
151 | }; |
152 | |
153 | struct keywordTypes grubKeywords[] = { |
154 | { "title", LT_TITLE, ' ' }, |
155 | { "root", LT_BOOTROOT, ' ' }, |
156 | { "default", LT_DEFAULT, ' ' }, |
157 | { "fallback", LT_FALLBACK, ' ' }, |
158 | { "kernel", LT_KERNEL, ' ' }, |
159 | { "initrd", LT_INITRD, ' ', ' ' }, |
160 | { "module", LT_MBMODULE, ' ' }, |
161 | { "kernel", LT_HYPER, ' ' }, |
162 | { NULL, 0, 0 }, |
163 | }; |
164 | |
165 | const char *grubFindConfig(struct configFileInfo *cfi) { |
166 | static const char *configFiles[] = { |
167 | "/etc/grub.conf", |
168 | "/boot/grub/grub.conf", |
169 | "/boot/grub/menu.lst", |
170 | NULL |
171 | }; |
172 | static int i = -1; |
173 | |
174 | if (i == -1) { |
175 | for (i = 0; configFiles[i] != NULL; i++) { |
176 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
177 | if (!access(configFiles[i], R_OK)) { |
178 | dbgPrintf("found\n"); |
179 | return configFiles[i]; |
180 | } |
181 | dbgPrintf("not found\n"); |
182 | } |
183 | } |
184 | return configFiles[i]; |
185 | } |
186 | |
187 | struct configFileInfo grubConfigType = { |
188 | .findConfig = grubFindConfig, |
189 | .keywords = grubKeywords, |
190 | .defaultIsIndex = 1, |
191 | .defaultSupportSaved = 1, |
192 | .entryStart = LT_TITLE, |
193 | .needsBootPrefix = 1, |
194 | .mbHyperFirst = 1, |
195 | .mbInitRdIsModule = 1, |
196 | .mbAllowExtraInitRds = 1, |
197 | }; |
198 | |
199 | struct keywordTypes grub2Keywords[] = { |
200 | { "menuentry", LT_MENUENTRY, ' ' }, |
201 | { "}", LT_ENTRY_END, ' ' }, |
202 | { "echo", LT_ECHO, ' ' }, |
203 | { "set", LT_SET_VARIABLE,' ', '=' }, |
204 | { "root", LT_BOOTROOT, ' ' }, |
205 | { "default", LT_DEFAULT, ' ' }, |
206 | { "fallback", LT_FALLBACK, ' ' }, |
207 | { "linux", LT_KERNEL, ' ' }, |
208 | { "initrd", LT_INITRD, ' ', ' ' }, |
209 | { "module", LT_MBMODULE, ' ' }, |
210 | { "kernel", LT_HYPER, ' ' }, |
211 | { NULL, 0, 0 }, |
212 | }; |
213 | |
214 | const char *grub2FindConfig(struct configFileInfo *cfi) { |
215 | static const char *configFiles[] = { |
216 | "/boot/grub/grub-efi.cfg", |
217 | "/boot/grub/grub.cfg", |
218 | NULL |
219 | }; |
220 | static int i = -1; |
221 | static const char *grub_cfg = "/boot/grub/grub.cfg"; |
222 | |
223 | if (i == -1) { |
224 | for (i = 0; configFiles[i] != NULL; i++) { |
225 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
226 | if (!access(configFiles[i], R_OK)) { |
227 | dbgPrintf("found\n"); |
228 | return configFiles[i]; |
229 | } |
230 | } |
231 | } |
232 | |
233 | /* Ubuntu renames grub2 to grub, so check for the grub.d directory |
234 | * that isn't in grub1, and if it exists, return the config file path |
235 | * that they use. */ |
236 | if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) { |
237 | dbgPrintf("found\n"); |
238 | return grub_cfg; |
239 | } |
240 | |
241 | dbgPrintf("not found\n"); |
242 | return configFiles[i]; |
243 | } |
244 | |
245 | int sizeOfSingleLine(struct singleLine * line) { |
246 | int i; |
247 | int count = 0; |
248 | |
249 | for (i = 0; i < line->numElements; i++) { |
250 | int indentSize = 0; |
251 | |
252 | count = count + strlen(line->elements[i].item); |
253 | |
254 | indentSize = strlen(line->elements[i].indent); |
255 | if (indentSize > 0) |
256 | count = count + indentSize; |
257 | else |
258 | /* be extra safe and add room for whitespaces */ |
259 | count = count + 1; |
260 | } |
261 | |
262 | /* room for trailing terminator */ |
263 | count = count + 1; |
264 | |
265 | return count; |
266 | } |
267 | |
268 | static int isquote(char q) |
269 | { |
270 | if (q == '\'' || q == '\"') |
271 | return 1; |
272 | return 0; |
273 | } |
274 | |
275 | char *grub2ExtractTitle(struct singleLine * line) { |
276 | char * current; |
277 | char * current_indent; |
278 | int current_len; |
279 | int current_indent_len; |
280 | int i; |
281 | |
282 | /* bail out if line does not start with menuentry */ |
283 | if (strcmp(line->elements[0].item, "menuentry")) |
284 | return NULL; |
285 | |
286 | i = 1; |
287 | current = line->elements[i].item; |
288 | current_len = strlen(current); |
289 | |
290 | /* if second word is quoted, strip the quotes and return single word */ |
291 | if (isquote(*current) && isquote(current[current_len - 1])) { |
292 | char *tmp; |
293 | |
294 | tmp = strdup(current); |
295 | *(tmp + current_len - 1) = '\0'; |
296 | return ++tmp; |
297 | } |
298 | |
299 | /* if no quotes, return second word verbatim */ |
300 | if (!isquote(*current)) |
301 | return current; |
302 | |
303 | /* second element start with a quote, so we have to find the element |
304 | * whose last character is also quote (assuming it's the closing one) */ |
305 | int resultMaxSize; |
306 | char * result; |
307 | |
308 | resultMaxSize = sizeOfSingleLine(line); |
309 | result = malloc(resultMaxSize); |
310 | snprintf(result, resultMaxSize, "%s", ++current); |
311 | |
312 | i++; |
313 | for (; i < line->numElements; ++i) { |
314 | current = line->elements[i].item; |
315 | current_len = strlen(current); |
316 | current_indent = line->elements[i].indent; |
317 | current_indent_len = strlen(current_indent); |
318 | |
319 | strncat(result, current_indent, current_indent_len); |
320 | if (!isquote(current[current_len-1])) { |
321 | strncat(result, current, current_len); |
322 | } else { |
323 | strncat(result, current, current_len - 1); |
324 | break; |
325 | } |
326 | } |
327 | return result; |
328 | } |
329 | |
330 | struct configFileInfo grub2ConfigType = { |
331 | .findConfig = grub2FindConfig, |
332 | .keywords = grub2Keywords, |
333 | .defaultIsIndex = 1, |
334 | .defaultSupportSaved = 1, |
335 | .defaultIsVariable = 1, |
336 | .entryStart = LT_MENUENTRY, |
337 | .entryEnd = LT_ENTRY_END, |
338 | .titlePosition = 1, |
339 | .needsBootPrefix = 1, |
340 | .mbHyperFirst = 1, |
341 | .mbInitRdIsModule = 1, |
342 | .mbAllowExtraInitRds = 1, |
343 | }; |
344 | |
345 | struct keywordTypes yabootKeywords[] = { |
346 | { "label", LT_TITLE, '=' }, |
347 | { "root", LT_ROOT, '=' }, |
348 | { "default", LT_DEFAULT, '=' }, |
349 | { "image", LT_KERNEL, '=' }, |
350 | { "bsd", LT_GENERIC, '=' }, |
351 | { "macos", LT_GENERIC, '=' }, |
352 | { "macosx", LT_GENERIC, '=' }, |
353 | { "magicboot", LT_GENERIC, '=' }, |
354 | { "darwin", LT_GENERIC, '=' }, |
355 | { "timeout", LT_GENERIC, '=' }, |
356 | { "install", LT_GENERIC, '=' }, |
357 | { "fstype", LT_GENERIC, '=' }, |
358 | { "hfstype", LT_GENERIC, '=' }, |
359 | { "delay", LT_GENERIC, '=' }, |
360 | { "defaultos", LT_GENERIC, '=' }, |
361 | { "init-message", LT_GENERIC, '=' }, |
362 | { "enablecdboot", LT_GENERIC, ' ' }, |
363 | { "enableofboot", LT_GENERIC, ' ' }, |
364 | { "enablenetboot", LT_GENERIC, ' ' }, |
365 | { "nonvram", LT_GENERIC, ' ' }, |
366 | { "hide", LT_GENERIC, ' ' }, |
367 | { "protect", LT_GENERIC, ' ' }, |
368 | { "nobless", LT_GENERIC, ' ' }, |
369 | { "nonvram", LT_GENERIC, ' ' }, |
370 | { "brokenosx", LT_GENERIC, ' ' }, |
371 | { "usemount", LT_GENERIC, ' ' }, |
372 | { "mntpoint", LT_GENERIC, '=' }, |
373 | { "partition", LT_GENERIC, '=' }, |
374 | { "device", LT_GENERIC, '=' }, |
375 | { "fstype", LT_GENERIC, '=' }, |
376 | { "initrd", LT_INITRD, '=', ';' }, |
377 | { "append", LT_KERNELARGS, '=' }, |
378 | { "boot", LT_BOOT, '=' }, |
379 | { "lba", LT_LBA, ' ' }, |
380 | { NULL, 0, 0 }, |
381 | }; |
382 | |
383 | struct keywordTypes liloKeywords[] = { |
384 | { "label", LT_TITLE, '=' }, |
385 | { "root", LT_ROOT, '=' }, |
386 | { "default", LT_DEFAULT, '=' }, |
387 | { "image", LT_KERNEL, '=' }, |
388 | { "other", LT_OTHER, '=' }, |
389 | { "initrd", LT_INITRD, '=' }, |
390 | { "append", LT_KERNELARGS, '=' }, |
391 | { "boot", LT_BOOT, '=' }, |
392 | { "lba", LT_LBA, ' ' }, |
393 | { NULL, 0, 0 }, |
394 | }; |
395 | |
396 | struct keywordTypes eliloKeywords[] = { |
397 | { "label", LT_TITLE, '=' }, |
398 | { "root", LT_ROOT, '=' }, |
399 | { "default", LT_DEFAULT, '=' }, |
400 | { "image", LT_KERNEL, '=' }, |
401 | { "initrd", LT_INITRD, '=' }, |
402 | { "append", LT_KERNELARGS, '=' }, |
403 | { "vmm", LT_HYPER, '=' }, |
404 | { NULL, 0, 0 }, |
405 | }; |
406 | |
407 | struct keywordTypes siloKeywords[] = { |
408 | { "label", LT_TITLE, '=' }, |
409 | { "root", LT_ROOT, '=' }, |
410 | { "default", LT_DEFAULT, '=' }, |
411 | { "image", LT_KERNEL, '=' }, |
412 | { "other", LT_OTHER, '=' }, |
413 | { "initrd", LT_INITRD, '=' }, |
414 | { "append", LT_KERNELARGS, '=' }, |
415 | { "boot", LT_BOOT, '=' }, |
416 | { NULL, 0, 0 }, |
417 | }; |
418 | |
419 | struct keywordTypes ziplKeywords[] = { |
420 | { "target", LT_BOOTROOT, '=' }, |
421 | { "image", LT_KERNEL, '=' }, |
422 | { "ramdisk", LT_INITRD, '=' }, |
423 | { "parameters", LT_KERNELARGS, '=' }, |
424 | { "default", LT_DEFAULT, '=' }, |
425 | { NULL, 0, 0 }, |
426 | }; |
427 | |
428 | struct keywordTypes extlinuxKeywords[] = { |
429 | { "label", LT_TITLE, ' ' }, |
430 | { "root", LT_ROOT, ' ' }, |
431 | { "default", LT_DEFAULT, ' ' }, |
432 | { "kernel", LT_KERNEL, ' ' }, |
433 | { "initrd", LT_INITRD, ' ', ',' }, |
434 | { "append", LT_KERNELARGS, ' ' }, |
435 | { "prompt", LT_UNKNOWN, ' ' }, |
436 | { NULL, 0, 0 }, |
437 | }; |
438 | int useextlinuxmenu; |
439 | struct configFileInfo eliloConfigType = { |
440 | .defaultConfig = "/boot/efi/EFI/redhat/elilo.conf", |
441 | .keywords = eliloKeywords, |
442 | .entryStart = LT_KERNEL, |
443 | .needsBootPrefix = 1, |
444 | .argsInQuotes = 1, |
445 | .mbConcatArgs = 1, |
446 | }; |
447 | |
448 | struct configFileInfo liloConfigType = { |
449 | .defaultConfig = "/etc/lilo.conf", |
450 | .keywords = liloKeywords, |
451 | .entryStart = LT_KERNEL, |
452 | .argsInQuotes = 1, |
453 | .maxTitleLength = 15, |
454 | }; |
455 | |
456 | struct configFileInfo yabootConfigType = { |
457 | .defaultConfig = "/etc/yaboot.conf", |
458 | .keywords = yabootKeywords, |
459 | .entryStart = LT_KERNEL, |
460 | .needsBootPrefix = 1, |
461 | .argsInQuotes = 1, |
462 | .maxTitleLength = 15, |
463 | .mbAllowExtraInitRds = 1, |
464 | }; |
465 | |
466 | struct configFileInfo siloConfigType = { |
467 | .defaultConfig = "/etc/silo.conf", |
468 | .keywords = siloKeywords, |
469 | .entryStart = LT_KERNEL, |
470 | .needsBootPrefix = 1, |
471 | .argsInQuotes = 1, |
472 | .maxTitleLength = 15, |
473 | }; |
474 | |
475 | struct configFileInfo ziplConfigType = { |
476 | .defaultConfig = "/etc/zipl.conf", |
477 | .keywords = ziplKeywords, |
478 | .entryStart = LT_TITLE, |
479 | .argsInQuotes = 1, |
480 | .titleBracketed = 1, |
481 | }; |
482 | |
483 | struct configFileInfo extlinuxConfigType = { |
484 | .defaultConfig = "/boot/extlinux/extlinux.conf", |
485 | .keywords = extlinuxKeywords, |
486 | .entryStart = LT_TITLE, |
487 | .needsBootPrefix = 1, |
488 | .maxTitleLength = 255, |
489 | .mbAllowExtraInitRds = 1, |
490 | }; |
491 | |
492 | struct grubConfig { |
493 | struct singleLine * theLines; |
494 | struct singleEntry * entries; |
495 | char * primaryIndent; |
496 | char * secondaryIndent; |
497 | int defaultImage; /* -1 if none specified -- this value is |
498 | * written out, overriding original */ |
499 | int fallbackImage; /* just like defaultImage */ |
500 | int flags; |
501 | struct configFileInfo * cfi; |
502 | }; |
503 | |
504 | blkid_cache blkid; |
505 | |
506 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); |
507 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, |
508 | const char * path, const char * prefix, |
509 | int * index); |
510 | static int readFile(int fd, char ** bufPtr); |
511 | static void lineInit(struct singleLine * line); |
512 | struct singleLine * lineDup(struct singleLine * line); |
513 | static void lineFree(struct singleLine * line); |
514 | static int lineWrite(FILE * out, struct singleLine * line, |
515 | struct configFileInfo * cfi); |
516 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
517 | struct configFileInfo * cfi); |
518 | static char * getRootSpecifier(char * str); |
519 | static void requote(struct singleLine *line, struct configFileInfo * cfi); |
520 | static void insertElement(struct singleLine * line, |
521 | const char * item, int insertHere, |
522 | struct configFileInfo * cfi); |
523 | static void removeElement(struct singleLine * line, int removeHere); |
524 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
525 | struct configFileInfo * cfi); |
526 | static enum lineType_e getTypeByKeyword(char * keyword, |
527 | struct configFileInfo * cfi); |
528 | static struct singleLine * getLineByType(enum lineType_e type, |
529 | struct singleLine * line); |
530 | static int checkForExtLinux(struct grubConfig * config); |
531 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
532 | struct singleLine * tmplLine, |
533 | struct singleLine * prevLine, |
534 | const char * val, |
535 | struct configFileInfo * cfi); |
536 | struct singleLine * addLine(struct singleEntry * entry, |
537 | struct configFileInfo * cfi, |
538 | enum lineType_e type, char * defaultIndent, |
539 | const char * val); |
540 | |
541 | static char * sdupprintf(const char *format, ...) |
542 | #ifdef __GNUC__ |
543 | __attribute__ ((format (printf, 1, 2))); |
544 | #else |
545 | ; |
546 | #endif |
547 | |
548 | static char * sdupprintf(const char *format, ...) { |
549 | char *buf = NULL; |
550 | char c; |
551 | va_list args; |
552 | size_t size = 0; |
553 | va_start(args, format); |
554 | |
555 | /* XXX requires C99 vsnprintf behavior */ |
556 | size = vsnprintf(&c, 1, format, args) + 1; |
557 | if (size == -1) { |
558 | printf("ERROR: vsnprintf behavior is not C99\n"); |
559 | abort(); |
560 | } |
561 | |
562 | va_end(args); |
563 | va_start(args, format); |
564 | |
565 | buf = malloc(size); |
566 | if (buf == NULL) |
567 | return NULL; |
568 | vsnprintf(buf, size, format, args); |
569 | va_end (args); |
570 | |
571 | return buf; |
572 | } |
573 | |
574 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
575 | struct configFileInfo * cfi) { |
576 | struct keywordTypes * kw; |
577 | for (kw = cfi->keywords; kw->key; kw++) { |
578 | if (kw->type == type) |
579 | return kw; |
580 | } |
581 | return NULL; |
582 | } |
583 | |
584 | static char *getKeyByType(enum lineType_e type, struct configFileInfo * cfi) { |
585 | struct keywordTypes *kt = getKeywordByType(type, cfi); |
586 | if (kt) |
587 | return kt->key; |
588 | return "unknown"; |
589 | } |
590 | |
591 | static char * getpathbyspec(char *device) { |
592 | if (!blkid) |
593 | blkid_get_cache(&blkid, NULL); |
594 | |
595 | return blkid_get_devname(blkid, device, NULL); |
596 | } |
597 | |
598 | static char * getuuidbydev(char *device) { |
599 | if (!blkid) |
600 | blkid_get_cache(&blkid, NULL); |
601 | |
602 | return blkid_get_tag_value(blkid, "UUID", device); |
603 | } |
604 | |
605 | static enum lineType_e getTypeByKeyword(char * keyword, |
606 | struct configFileInfo * cfi) { |
607 | struct keywordTypes * kw; |
608 | for (kw = cfi->keywords; kw->key; kw++) { |
609 | if (!strcmp(keyword, kw->key)) |
610 | return kw->type; |
611 | } |
612 | return LT_UNKNOWN; |
613 | } |
614 | |
615 | static struct singleLine * getLineByType(enum lineType_e type, |
616 | struct singleLine * line) { |
617 | dbgPrintf("getLineByType(%d): ", type); |
618 | for (; line; line = line->next) { |
619 | dbgPrintf("%d:%s ", line->type, |
620 | line->numElements ? line->elements[0].item : "(empty)"); |
621 | if (line->type & type) break; |
622 | } |
623 | dbgPrintf(line ? "\n" : " (failed)\n"); |
624 | return line; |
625 | } |
626 | |
627 | static int isBracketedTitle(struct singleLine * line) { |
628 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
629 | int len = strlen(line->elements[0].item); |
630 | if (*(line->elements[0].item + len - 1) == ']') { |
631 | /* FIXME: this is a hack... */ |
632 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
633 | return 1; |
634 | } |
635 | } |
636 | } |
637 | return 0; |
638 | } |
639 | |
640 | static int isEntryStart(struct singleLine * line, |
641 | struct configFileInfo * cfi) { |
642 | return line->type == cfi->entryStart || line->type == LT_OTHER || |
643 | (cfi->titleBracketed && isBracketedTitle(line)); |
644 | } |
645 | |
646 | /* extract the title from within brackets (for zipl) */ |
647 | static char * extractTitle(struct singleLine * line) { |
648 | /* bracketed title... let's extract it (leaks a byte) */ |
649 | char * title; |
650 | title = strdup(line->elements[0].item); |
651 | title++; |
652 | *(title + strlen(title) - 1) = '\0'; |
653 | return title; |
654 | } |
655 | |
656 | static int readFile(int fd, char ** bufPtr) { |
657 | int alloced = 0, size = 0, i = 0; |
658 | char * buf = NULL; |
659 | |
660 | do { |
661 | size += i; |
662 | if ((size + 1024) > alloced) { |
663 | alloced += 4096; |
664 | buf = realloc(buf, alloced + 1); |
665 | } |
666 | } while ((i = read(fd, buf + size, 1024)) > 0); |
667 | |
668 | if (i < 0) { |
669 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); |
670 | free(buf); |
671 | return 1; |
672 | } |
673 | |
674 | buf = realloc(buf, size + 2); |
675 | if (size == 0) |
676 | buf[size++] = '\n'; |
677 | else |
678 | if (buf[size - 1] != '\n') |
679 | buf[size++] = '\n'; |
680 | buf[size] = '\0'; |
681 | |
682 | *bufPtr = buf; |
683 | |
684 | return 0; |
685 | } |
686 | |
687 | static void lineInit(struct singleLine * line) { |
688 | line->indent = NULL; |
689 | line->elements = NULL; |
690 | line->numElements = 0; |
691 | line->next = NULL; |
692 | } |
693 | |
694 | struct singleLine * lineDup(struct singleLine * line) { |
695 | int i; |
696 | struct singleLine * newLine = malloc(sizeof(*newLine)); |
697 | |
698 | newLine->indent = strdup(line->indent); |
699 | newLine->next = NULL; |
700 | newLine->type = line->type; |
701 | newLine->numElements = line->numElements; |
702 | newLine->elements = malloc(sizeof(*newLine->elements) * |
703 | newLine->numElements); |
704 | |
705 | for (i = 0; i < newLine->numElements; i++) { |
706 | newLine->elements[i].indent = strdup(line->elements[i].indent); |
707 | newLine->elements[i].item = strdup(line->elements[i].item); |
708 | } |
709 | |
710 | return newLine; |
711 | } |
712 | |
713 | static void lineFree(struct singleLine * line) { |
714 | int i; |
715 | |
716 | if (line->indent) free(line->indent); |
717 | |
718 | for (i = 0; i < line->numElements; i++) { |
719 | free(line->elements[i].item); |
720 | free(line->elements[i].indent); |
721 | } |
722 | |
723 | if (line->elements) free(line->elements); |
724 | lineInit(line); |
725 | } |
726 | |
727 | static int lineWrite(FILE * out, struct singleLine * line, |
728 | struct configFileInfo * cfi) { |
729 | int i; |
730 | |
731 | if (fprintf(out, "%s", line->indent) == -1) return -1; |
732 | |
733 | for (i = 0; i < line->numElements; i++) { |
734 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
735 | if (fputc('"', out) == EOF) return -1; |
736 | |
737 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; |
738 | if (i < line->numElements - 1) |
739 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; |
740 | } |
741 | |
742 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
743 | if (fputc('"', out) == EOF) return -1; |
744 | |
745 | if (fprintf(out, "\n") == -1) return -1; |
746 | |
747 | return 0; |
748 | } |
749 | |
750 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
751 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
752 | struct configFileInfo * cfi) { |
753 | char * end; |
754 | char * start = *bufPtr; |
755 | char * chptr; |
756 | int elementsAlloced = 0; |
757 | struct lineElement * element; |
758 | int first = 1; |
759 | |
760 | lineFree(line); |
761 | |
762 | end = strchr(start, '\n'); |
763 | *end = '\0'; |
764 | *bufPtr = end + 1; |
765 | |
766 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
767 | |
768 | line->indent = strndup(start, chptr - start); |
769 | start = chptr; |
770 | |
771 | while (start < end) { |
772 | /* we know !isspace(*start) */ |
773 | |
774 | if (elementsAlloced == line->numElements) { |
775 | elementsAlloced += 5; |
776 | line->elements = realloc(line->elements, |
777 | sizeof(*line->elements) * elementsAlloced); |
778 | } |
779 | |
780 | element = line->elements + line->numElements; |
781 | |
782 | chptr = start; |
783 | while (*chptr && !isspace(*chptr)) { |
784 | if (first && *chptr == '=') break; |
785 | chptr++; |
786 | } |
787 | element->item = strndup(start, chptr - start); |
788 | start = chptr; |
789 | |
790 | /* lilo actually accepts the pathological case of append = " foo " */ |
791 | if (*start == '=') |
792 | chptr = start + 1; |
793 | else |
794 | chptr = start; |
795 | |
796 | do { |
797 | for (; *chptr && isspace(*chptr); chptr++); |
798 | if (*chptr == '=') |
799 | chptr = chptr + 1; |
800 | } while (isspace(*chptr)); |
801 | |
802 | element->indent = strndup(start, chptr - start); |
803 | start = chptr; |
804 | |
805 | line->numElements++; |
806 | first = 0; |
807 | } |
808 | |
809 | if (!line->numElements) |
810 | line->type = LT_WHITESPACE; |
811 | else { |
812 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
813 | if (line->type == LT_UNKNOWN) { |
814 | /* zipl does [title] instead of something reasonable like all |
815 | * the other boot loaders. kind of ugly */ |
816 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
817 | line->type = LT_TITLE; |
818 | } |
819 | |
820 | /* this is awkward, but we need to be able to handle keywords |
821 | that begin with a # (specifically for #boot in grub.conf), |
822 | but still make comments lines with no elements (everything |
823 | stored in the indent */ |
824 | if (*line->elements[0].item == '#') { |
825 | char * fullLine; |
826 | int len; |
827 | int i; |
828 | |
829 | len = strlen(line->indent); |
830 | for (i = 0; i < line->numElements; i++) |
831 | len += strlen(line->elements[i].item) + |
832 | strlen(line->elements[i].indent); |
833 | |
834 | fullLine = malloc(len + 1); |
835 | strcpy(fullLine, line->indent); |
836 | free(line->indent); |
837 | line->indent = fullLine; |
838 | |
839 | for (i = 0; i < line->numElements; i++) { |
840 | strcat(fullLine, line->elements[i].item); |
841 | strcat(fullLine, line->elements[i].indent); |
842 | free(line->elements[i].item); |
843 | free(line->elements[i].indent); |
844 | } |
845 | |
846 | line->type = LT_WHITESPACE; |
847 | line->numElements = 0; |
848 | } |
849 | } else { |
850 | struct keywordTypes *kw; |
851 | |
852 | kw = getKeywordByType(line->type, cfi); |
853 | |
854 | /* space isn't the only separator, we need to split |
855 | * elements up more |
856 | */ |
857 | if (!isspace(kw->separatorChar)) { |
858 | int i; |
859 | char indent[2] = ""; |
860 | indent[0] = kw->separatorChar; |
861 | for (i = 1; i < line->numElements; i++) { |
862 | char *p; |
863 | int j; |
864 | int numNewElements; |
865 | |
866 | numNewElements = 0; |
867 | p = line->elements[i].item; |
868 | while (*p != '\0') { |
869 | if (*p == kw->separatorChar) |
870 | numNewElements++; |
871 | p++; |
872 | } |
873 | if (line->numElements + numNewElements >= elementsAlloced) { |
874 | elementsAlloced += numNewElements + 5; |
875 | line->elements = realloc(line->elements, |
876 | sizeof(*line->elements) * elementsAlloced); |
877 | } |
878 | |
879 | for (j = line->numElements; j > i; j--) { |
880 | line->elements[j + numNewElements] = line->elements[j]; |
881 | } |
882 | line->numElements += numNewElements; |
883 | |
884 | p = line->elements[i].item; |
885 | while (*p != '\0') { |
886 | |
887 | while (*p != kw->separatorChar && *p != '\0') p++; |
888 | if (*p == '\0') { |
889 | break; |
890 | } |
891 | |
892 | free(line->elements[i].indent); |
893 | line->elements[i].indent = strdup(indent); |
894 | *p++ = '\0'; |
895 | i++; |
896 | line->elements[i].item = strdup(p); |
897 | line->elements[i].indent = strdup(""); |
898 | p = line->elements[i].item; |
899 | } |
900 | } |
901 | } |
902 | } |
903 | } |
904 | |
905 | return 0; |
906 | } |
907 | |
908 | static struct grubConfig * readConfig(const char * inName, |
909 | struct configFileInfo * cfi) { |
910 | int in; |
911 | char * incoming = NULL, * head; |
912 | int rc; |
913 | int sawEntry = 0; |
914 | int movedLine = 0; |
915 | struct grubConfig * cfg; |
916 | struct singleLine * last = NULL, * line, * defaultLine = NULL; |
917 | char * end; |
918 | struct singleEntry * entry = NULL; |
919 | int i, len; |
920 | char * buf; |
921 | |
922 | if (!strcmp(inName, "-")) { |
923 | in = 0; |
924 | } else { |
925 | if ((in = open(inName, O_RDONLY)) < 0) { |
926 | fprintf(stderr, _("error opening %s for read: %s\n"), |
927 | inName, strerror(errno)); |
928 | return NULL; |
929 | } |
930 | } |
931 | |
932 | rc = readFile(in, &incoming); |
933 | close(in); |
934 | if (rc) return NULL; |
935 | |
936 | head = incoming; |
937 | cfg = malloc(sizeof(*cfg)); |
938 | cfg->primaryIndent = strdup(""); |
939 | cfg->secondaryIndent = strdup("\t"); |
940 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
941 | cfg->cfi = cfi; |
942 | cfg->theLines = NULL; |
943 | cfg->entries = NULL; |
944 | cfg->fallbackImage = 0; |
945 | |
946 | /* copy everything we have */ |
947 | while (*head) { |
948 | line = malloc(sizeof(*line)); |
949 | lineInit(line); |
950 | |
951 | if (getNextLine(&head, line, cfi)) { |
952 | free(line); |
953 | /* XXX memory leak of everything in cfg */ |
954 | return NULL; |
955 | } |
956 | |
957 | if (!sawEntry && line->numElements) { |
958 | free(cfg->primaryIndent); |
959 | cfg->primaryIndent = strdup(line->indent); |
960 | } else if (line->numElements) { |
961 | free(cfg->secondaryIndent); |
962 | cfg->secondaryIndent = strdup(line->indent); |
963 | } |
964 | |
965 | if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) { |
966 | sawEntry = 1; |
967 | if (!entry) { |
968 | cfg->entries = malloc(sizeof(*entry)); |
969 | entry = cfg->entries; |
970 | } else { |
971 | entry->next = malloc(sizeof(*entry)); |
972 | entry = entry->next; |
973 | } |
974 | |
975 | entry->skip = 0; |
976 | entry->multiboot = 0; |
977 | entry->lines = NULL; |
978 | entry->next = NULL; |
979 | } |
980 | |
981 | if (line->type == LT_SET_VARIABLE) { |
982 | int i; |
983 | dbgPrintf("found 'set' command (%d elements): ", line->numElements); |
984 | dbgPrintf("%s", line->indent); |
985 | for (i = 0; i < line->numElements; i++) |
986 | dbgPrintf("%s\"%s\"", line->elements[i].indent, line->elements[i].item); |
987 | dbgPrintf("\n"); |
988 | struct keywordTypes *kwType = getKeywordByType(LT_DEFAULT, cfi); |
989 | if (kwType && line->numElements == 3 && |
990 | !strcmp(line->elements[1].item, kwType->key)) { |
991 | dbgPrintf("Line sets default config\n"); |
992 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
993 | defaultLine = line; |
994 | } |
995 | } else if (line->type == LT_DEFAULT && line->numElements == 2) { |
996 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
997 | defaultLine = line; |
998 | |
999 | } else if (line->type == LT_KERNEL) { |
1000 | /* if by some freak chance this is multiboot and the "module" |
1001 | * lines came earlier in the template, make sure to use LT_HYPER |
1002 | * instead of LT_KERNEL now |
1003 | */ |
1004 | if (entry->multiboot) |
1005 | line->type = LT_HYPER; |
1006 | |
1007 | } else if (line->type == LT_MBMODULE) { |
1008 | /* go back and fix the LT_KERNEL line to indicate LT_HYPER |
1009 | * instead, now that we know this is a multiboot entry. |
1010 | * This only applies to grub, but that's the only place we |
1011 | * should find LT_MBMODULE lines anyway. |
1012 | */ |
1013 | struct singleLine * l; |
1014 | for (l = entry->lines; l; l = l->next) { |
1015 | if (l->type == LT_HYPER) |
1016 | break; |
1017 | else if (l->type == LT_KERNEL) { |
1018 | l->type = LT_HYPER; |
1019 | break; |
1020 | } |
1021 | } |
1022 | entry->multiboot = 1; |
1023 | |
1024 | } else if (line->type == LT_HYPER) { |
1025 | entry->multiboot = 1; |
1026 | |
1027 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
1028 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); |
1029 | if (*end) cfg->fallbackImage = -1; |
1030 | |
1031 | } else if (line->type == LT_TITLE && line->numElements > 1) { |
1032 | /* make the title a single argument (undoing our parsing) */ |
1033 | len = 0; |
1034 | for (i = 1; i < line->numElements; i++) { |
1035 | len += strlen(line->elements[i].item); |
1036 | len += strlen(line->elements[i].indent); |
1037 | } |
1038 | buf = malloc(len + 1); |
1039 | *buf = '\0'; |
1040 | |
1041 | for (i = 1; i < line->numElements; i++) { |
1042 | strcat(buf, line->elements[i].item); |
1043 | free(line->elements[i].item); |
1044 | |
1045 | if ((i + 1) != line->numElements) { |
1046 | strcat(buf, line->elements[i].indent); |
1047 | free(line->elements[i].indent); |
1048 | } |
1049 | } |
1050 | |
1051 | line->elements[1].indent = |
1052 | line->elements[line->numElements - 1].indent; |
1053 | line->elements[1].item = buf; |
1054 | line->numElements = 2; |
1055 | |
1056 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
1057 | /* Strip off any " which may be present; they'll be put back |
1058 | on write. This is one of the few (the only?) places that grubby |
1059 | canonicalizes the output */ |
1060 | |
1061 | if (line->numElements >= 2) { |
1062 | int last, len; |
1063 | |
1064 | if (*line->elements[1].item == '"') |
1065 | memmove(line->elements[1].item, line->elements[1].item + 1, |
1066 | strlen(line->elements[1].item + 1) + 1); |
1067 | |
1068 | last = line->numElements - 1; |
1069 | len = strlen(line->elements[last].item) - 1; |
1070 | if (line->elements[last].item[len] == '"') |
1071 | line->elements[last].item[len] = '\0'; |
1072 | } |
1073 | } |
1074 | |
1075 | /* If we find a generic config option which should live at the |
1076 | top of the file, move it there. Old versions of grubby were |
1077 | probably responsible for putting new images in the wrong |
1078 | place in front of it anyway. */ |
1079 | if (sawEntry && line->type == LT_GENERIC) { |
1080 | struct singleLine **l = &cfg->theLines; |
1081 | struct singleLine **last_nonws = &cfg->theLines; |
1082 | while (*l) { |
1083 | if ((*l)->type != LT_WHITESPACE) |
1084 | last_nonws = &((*l)->next); |
1085 | l = &((*l)->next); |
1086 | } |
1087 | line->next = *last_nonws; |
1088 | *last_nonws = line; |
1089 | movedLine = 1; |
1090 | continue; /* without setting 'last' */ |
1091 | } |
1092 | |
1093 | /* If a second line of whitespace happens after a generic option |
1094 | which was moved, drop it. */ |
1095 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { |
1096 | lineFree(line); |
1097 | free(line); |
1098 | movedLine = 0; |
1099 | continue; |
1100 | } |
1101 | movedLine = 0; |
1102 | |
1103 | if (sawEntry) { |
1104 | if (!entry->lines) |
1105 | entry->lines = line; |
1106 | else |
1107 | last->next = line; |
1108 | dbgPrintf("readConfig added %s to %p\n", getKeyByType(line->type, cfi), entry); |
1109 | |
1110 | /* we could have seen this outside of an entry... if so, we |
1111 | * ignore it like any other line we don't grok */ |
1112 | if (line->type == LT_ENTRY_END && sawEntry) |
1113 | sawEntry = 0; |
1114 | } else { |
1115 | if (!cfg->theLines) |
1116 | cfg->theLines = line; |
1117 | else |
1118 | last->next = line; |
1119 | dbgPrintf("readConfig added %s to cfg\n", getKeyByType(line->type, cfi)); |
1120 | } |
1121 | |
1122 | last = line; |
1123 | } |
1124 | |
1125 | free(incoming); |
1126 | |
1127 | dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset"); |
1128 | if (defaultLine) { |
1129 | if (defaultLine->numElements > 2 && |
1130 | cfi->defaultSupportSaved && |
1131 | !strncmp(defaultLine->elements[2].item,"\"${saved_entry}\"", 16)) { |
1132 | cfg->defaultImage = DEFAULT_SAVED_GRUB2; |
1133 | } else if (cfi->defaultIsVariable) { |
1134 | char *value = defaultLine->elements[2].item; |
1135 | while (*value && (*value == '"' || *value == '\'' || |
1136 | *value == ' ' || *value == '\t')) |
1137 | value++; |
1138 | cfg->defaultImage = strtol(value, &end, 10); |
1139 | while (*end && (*end == '"' || *end == '\'' || |
1140 | *end == ' ' || *end == '\t')) |
1141 | end++; |
1142 | if (*end) cfg->defaultImage = -1; |
1143 | } else if (cfi->defaultSupportSaved && |
1144 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { |
1145 | cfg->defaultImage = DEFAULT_SAVED; |
1146 | } else if (cfi->defaultIsIndex) { |
1147 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); |
1148 | if (*end) cfg->defaultImage = -1; |
1149 | } else if (defaultLine->numElements >= 2) { |
1150 | i = 0; |
1151 | while ((entry = findEntryByIndex(cfg, i))) { |
1152 | for (line = entry->lines; line; line = line->next) |
1153 | if (line->type == LT_TITLE) break; |
1154 | |
1155 | if (!cfi->titleBracketed) { |
1156 | if (line && (line->numElements >= 2) && |
1157 | !strcmp(defaultLine->elements[1].item, |
1158 | line->elements[1].item)) break; |
1159 | } else if (line) { |
1160 | if (!strcmp(defaultLine->elements[1].item, |
1161 | extractTitle(line))) break; |
1162 | } |
1163 | i++; |
1164 | entry = NULL; |
1165 | } |
1166 | |
1167 | if (entry){ |
1168 | cfg->defaultImage = i; |
1169 | }else{ |
1170 | cfg->defaultImage = -1; |
1171 | } |
1172 | } |
1173 | } else { |
1174 | cfg->defaultImage = 0; |
1175 | } |
1176 | |
1177 | return cfg; |
1178 | } |
1179 | |
1180 | static void writeDefault(FILE * out, char * indent, |
1181 | char * separator, struct grubConfig * cfg) { |
1182 | struct singleEntry * entry; |
1183 | struct singleLine * line; |
1184 | int i; |
1185 | |
1186 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; |
1187 | |
1188 | if (cfg->defaultImage == DEFAULT_SAVED) |
1189 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
1190 | else if (cfg->defaultImage == DEFAULT_SAVED_GRUB2) |
1191 | fprintf(out, "%sset default=\"${saved_entry}\"\n", indent); |
1192 | else if (cfg->defaultImage > -1) { |
1193 | if (cfg->cfi->defaultIsIndex) { |
1194 | if (cfg->cfi->defaultIsVariable) { |
1195 | fprintf(out, "%sset default=\"%d\"\n", indent, |
1196 | cfg->defaultImage); |
1197 | } else { |
1198 | fprintf(out, "%sdefault%s%d\n", indent, separator, |
1199 | cfg->defaultImage); |
1200 | } |
1201 | } else { |
1202 | int image = cfg->defaultImage; |
1203 | |
1204 | entry = cfg->entries; |
1205 | while (entry && entry->skip) entry = entry->next; |
1206 | |
1207 | i = 0; |
1208 | while (entry && i < image) { |
1209 | entry = entry->next; |
1210 | |
1211 | while (entry && entry->skip) entry = entry->next; |
1212 | i++; |
1213 | } |
1214 | |
1215 | if (!entry) return; |
1216 | |
1217 | line = getLineByType(LT_TITLE, entry->lines); |
1218 | |
1219 | if (line && line->numElements >= 2) |
1220 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1221 | line->elements[1].item); |
1222 | else if (line && (line->numElements == 1) && |
1223 | cfg->cfi->titleBracketed) { |
1224 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1225 | extractTitle(line)); |
1226 | } |
1227 | } |
1228 | } |
1229 | } |
1230 | |
1231 | static int writeConfig(struct grubConfig * cfg, char * outName, |
1232 | const char * prefix) { |
1233 | FILE * out; |
1234 | struct singleLine * line; |
1235 | struct singleEntry * entry; |
1236 | char * tmpOutName; |
1237 | int needs = MAIN_DEFAULT; |
1238 | struct stat sb; |
1239 | int i; |
1240 | |
1241 | if (!strcmp(outName, "-")) { |
1242 | out = stdout; |
1243 | tmpOutName = NULL; |
1244 | } else { |
1245 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
1246 | char * buf; |
1247 | int len = 256; |
1248 | int rc; |
1249 | |
1250 | /* most likely the symlink is relative, so change our |
1251 | directory to the dir of the symlink */ |
1252 | rc = chdir(dirname(strdupa(outName))); |
1253 | do { |
1254 | buf = alloca(len + 1); |
1255 | rc = readlink(basename(outName), buf, len); |
1256 | if (rc == len) len += 256; |
1257 | } while (rc == len); |
1258 | |
1259 | if (rc < 0) { |
1260 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), |
1261 | outName, strerror(errno)); |
1262 | return 1; |
1263 | } |
1264 | |
1265 | outName = buf; |
1266 | outName[rc] = '\0'; |
1267 | } |
1268 | |
1269 | tmpOutName = alloca(strlen(outName) + 2); |
1270 | sprintf(tmpOutName, "%s-", outName); |
1271 | out = fopen(tmpOutName, "w"); |
1272 | if (!out) { |
1273 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, |
1274 | strerror(errno)); |
1275 | return 1; |
1276 | } |
1277 | |
1278 | if (!stat(outName, &sb)) { |
1279 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
1280 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), |
1281 | tmpOutName, strerror(errno)); |
1282 | fclose(out); |
1283 | unlink(tmpOutName); |
1284 | return 1; |
1285 | } |
1286 | } |
1287 | } |
1288 | |
1289 | line = cfg->theLines; |
1290 | struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi); |
1291 | while (line) { |
1292 | if (line->type == LT_SET_VARIABLE && defaultKw && |
1293 | line->numElements == 3 && |
1294 | !strcmp(line->elements[1].item, defaultKw->key)) { |
1295 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1296 | needs &= ~MAIN_DEFAULT; |
1297 | } else if (line->type == LT_DEFAULT) { |
1298 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1299 | needs &= ~MAIN_DEFAULT; |
1300 | } else if (line->type == LT_FALLBACK) { |
1301 | if (cfg->fallbackImage > -1) |
1302 | fprintf(out, "%s%s%s%d\n", line->indent, |
1303 | line->elements[0].item, line->elements[0].indent, |
1304 | cfg->fallbackImage); |
1305 | } else { |
1306 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1307 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1308 | tmpOutName, strerror(errno)); |
1309 | fclose(out); |
1310 | unlink(tmpOutName); |
1311 | return 1; |
1312 | } |
1313 | } |
1314 | |
1315 | line = line->next; |
1316 | } |
1317 | |
1318 | if (needs & MAIN_DEFAULT) { |
1319 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
1320 | needs &= ~MAIN_DEFAULT; |
1321 | } |
1322 | |
1323 | i = 0; |
1324 | while ((entry = findEntryByIndex(cfg, i++))) { |
1325 | if (entry->skip) continue; |
1326 | |
1327 | line = entry->lines; |
1328 | while (line) { |
1329 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1330 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1331 | tmpOutName, strerror(errno)); |
1332 | fclose(out); |
1333 | unlink(tmpOutName); |
1334 | return 1; |
1335 | } |
1336 | line = line->next; |
1337 | } |
1338 | } |
1339 | |
1340 | if (tmpOutName) { |
1341 | if (rename(tmpOutName, outName)) { |
1342 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), |
1343 | tmpOutName, outName, strerror(errno)); |
1344 | unlink(outName); |
1345 | return 1; |
1346 | } |
1347 | } |
1348 | |
1349 | return 0; |
1350 | } |
1351 | |
1352 | static int numEntries(struct grubConfig *cfg) { |
1353 | int i = 0; |
1354 | struct singleEntry * entry; |
1355 | |
1356 | entry = cfg->entries; |
1357 | while (entry) { |
1358 | if (!entry->skip) |
1359 | i++; |
1360 | entry = entry->next; |
1361 | } |
1362 | return i; |
1363 | } |
1364 | |
1365 | static char *findDiskForRoot() |
1366 | { |
1367 | int fd; |
1368 | char buf[65536]; |
1369 | char *devname; |
1370 | char *chptr; |
1371 | int rc; |
1372 | |
1373 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { |
1374 | fprintf(stderr, "grubby: failed to open %s: %s\n", |
1375 | _PATH_MOUNTED, strerror(errno)); |
1376 | return NULL; |
1377 | } |
1378 | |
1379 | rc = read(fd, buf, sizeof(buf) - 1); |
1380 | if (rc <= 0) { |
1381 | fprintf(stderr, "grubby: failed to read %s: %s\n", |
1382 | _PATH_MOUNTED, strerror(errno)); |
1383 | close(fd); |
1384 | return NULL; |
1385 | } |
1386 | close(fd); |
1387 | buf[rc] = '\0'; |
1388 | chptr = buf; |
1389 | |
1390 | while (chptr && chptr != buf+rc) { |
1391 | devname = chptr; |
1392 | |
1393 | /* |
1394 | * The first column of a mtab entry is the device, but if the entry is a |
1395 | * special device it won't start with /, so move on to the next line. |
1396 | */ |
1397 | if (*devname != '/') { |
1398 | chptr = strchr(chptr, '\n'); |
1399 | if (chptr) |
1400 | chptr++; |
1401 | continue; |
1402 | } |
1403 | |
1404 | /* Seek to the next space */ |
1405 | chptr = strchr(chptr, ' '); |
1406 | if (!chptr) { |
1407 | fprintf(stderr, "grubby: error parsing %s: %s\n", |
1408 | _PATH_MOUNTED, strerror(errno)); |
1409 | return NULL; |
1410 | } |
1411 | |
1412 | /* |
1413 | * The second column of a mtab entry is the mount point, we are looking |
1414 | * for '/' obviously. |
1415 | */ |
1416 | if (*(++chptr) == '/' && *(++chptr) == ' ') { |
1417 | /* |
1418 | * Move back 2, which is the first space after the device name, set |
1419 | * it to \0 so strdup will just get the devicename. |
1420 | */ |
1421 | chptr -= 2; |
1422 | *chptr = '\0'; |
1423 | return strdup(devname); |
1424 | } |
1425 | |
1426 | /* Next line */ |
1427 | chptr = strchr(chptr, '\n'); |
1428 | if (chptr) |
1429 | chptr++; |
1430 | } |
1431 | |
1432 | return NULL; |
1433 | } |
1434 | |
1435 | void printEntry(struct singleEntry * entry) { |
1436 | int i; |
1437 | struct singleLine * line; |
1438 | |
1439 | for (line = entry->lines; line; line = line->next) { |
1440 | fprintf(stderr, "DBG: %s", line->indent); |
1441 | for (i = 0; i < line->numElements; i++) { |
1442 | fprintf(stderr, "%s%s", |
1443 | line->elements[i].item, line->elements[i].indent); |
1444 | } |
1445 | fprintf(stderr, "\n"); |
1446 | } |
1447 | } |
1448 | |
1449 | void notSuitablePrintf(struct singleEntry * entry, const char *fmt, ...) |
1450 | { |
1451 | va_list argp; |
1452 | |
1453 | if (!debug) |
1454 | return; |
1455 | |
1456 | va_start(argp, fmt); |
1457 | fprintf(stderr, "DBG: Image entry failed: "); |
1458 | vfprintf(stderr, fmt, argp); |
1459 | printEntry(entry); |
1460 | va_end(argp); |
1461 | } |
1462 | |
1463 | #define beginswith(s, c) ((s) && (s)[0] == (c)) |
1464 | |
1465 | static int endswith(const char *s, char c) |
1466 | { |
1467 | int slen; |
1468 | |
1469 | if (!s || !s[0]) |
1470 | return 0; |
1471 | slen = strlen(s) - 1; |
1472 | |
1473 | return s[slen] == c; |
1474 | } |
1475 | |
1476 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, |
1477 | int skipRemoved, int flags) { |
1478 | struct singleLine * line; |
1479 | char * fullName; |
1480 | int i; |
1481 | char * dev; |
1482 | char * rootspec; |
1483 | char * rootdev; |
1484 | |
1485 | if (skipRemoved && entry->skip) { |
1486 | notSuitablePrintf(entry, "marked to skip\n"); |
1487 | return 0; |
1488 | } |
1489 | |
1490 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1491 | if (!line) { |
1492 | notSuitablePrintf(entry, "no line found\n"); |
1493 | return 0; |
1494 | } |
1495 | if (line->numElements < 2) { |
1496 | notSuitablePrintf(entry, "line has only %d elements\n", |
1497 | line->numElements); |
1498 | return 0; |
1499 | } |
1500 | |
1501 | if (flags & GRUBBY_BADIMAGE_OKAY) return 1; |
1502 | |
1503 | fullName = alloca(strlen(bootPrefix) + |
1504 | strlen(line->elements[1].item) + 1); |
1505 | rootspec = getRootSpecifier(line->elements[1].item); |
1506 | int rootspec_offset = rootspec ? strlen(rootspec) : 0; |
1507 | int hasslash = endswith(bootPrefix, '/') || |
1508 | beginswith(line->elements[1].item + rootspec_offset, '/'); |
1509 | sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/", |
1510 | line->elements[1].item + rootspec_offset); |
1511 | if (access(fullName, R_OK)) { |
1512 | notSuitablePrintf(entry, "access to %s failed\n", fullName); |
1513 | return 0; |
1514 | } |
1515 | for (i = 2; i < line->numElements; i++) |
1516 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1517 | if (i < line->numElements) { |
1518 | dev = line->elements[i].item + 5; |
1519 | } else { |
1520 | /* look for a lilo style LT_ROOT line */ |
1521 | line = getLineByType(LT_ROOT, entry->lines); |
1522 | |
1523 | if (line && line->numElements >= 2) { |
1524 | dev = line->elements[1].item; |
1525 | } else { |
1526 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS. |
1527 | * grub+multiboot uses LT_MBMODULE for the args, so check that too. |
1528 | */ |
1529 | line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines); |
1530 | |
1531 | /* failed to find one */ |
1532 | if (!line) { |
1533 | notSuitablePrintf(entry, "no line found\n"); |
1534 | return 0; |
1535 | } |
1536 | |
1537 | for (i = 1; i < line->numElements; i++) |
1538 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1539 | if (i < line->numElements) |
1540 | dev = line->elements[i].item + 5; |
1541 | else { |
1542 | notSuitablePrintf(entry, "no root= entry found\n"); |
1543 | /* it failed too... can't find root= */ |
1544 | return 0; |
1545 | } |
1546 | } |
1547 | } |
1548 | |
1549 | dev = getpathbyspec(dev); |
1550 | if (!getpathbyspec(dev)) { |
1551 | notSuitablePrintf(entry, "can't find blkid entry for %s\n", dev); |
1552 | return 0; |
1553 | } else |
1554 | dev = getpathbyspec(dev); |
1555 | |
1556 | rootdev = findDiskForRoot(); |
1557 | if (!rootdev) { |
1558 | notSuitablePrintf(entry, "can't find root device\n"); |
1559 | return 0; |
1560 | } |
1561 | |
1562 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
1563 | notSuitablePrintf(entry, "uuid missing: rootdev %s, dev %s\n", |
1564 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1565 | free(rootdev); |
1566 | return 0; |
1567 | } |
1568 | |
1569 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
1570 | notSuitablePrintf(entry, "uuid mismatch: rootdev %s, dev %s\n", |
1571 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1572 | free(rootdev); |
1573 | return 0; |
1574 | } |
1575 | |
1576 | free(rootdev); |
1577 | |
1578 | return 1; |
1579 | } |
1580 | |
1581 | /* returns the first match on or after the one pointed to by index (if index |
1582 | is not NULL) which is not marked as skip */ |
1583 | struct singleEntry * findEntryByPath(struct grubConfig * config, |
1584 | const char * kernel, const char * prefix, |
1585 | int * index) { |
1586 | struct singleEntry * entry = NULL; |
1587 | struct singleLine * line; |
1588 | int i; |
1589 | char * chptr; |
1590 | char * rootspec = NULL; |
1591 | enum lineType_e checkType = LT_KERNEL; |
1592 | |
1593 | if (isdigit(*kernel)) { |
1594 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
1595 | |
1596 | i = 0; |
1597 | indexVars[i] = strtol(kernel, &chptr, 10); |
1598 | while (*chptr == ',') { |
1599 | i++; |
1600 | kernel = chptr + 1; |
1601 | indexVars[i] = strtol(kernel, &chptr, 10); |
1602 | } |
1603 | |
1604 | if (*chptr) { |
1605 | /* can't parse it, bail */ |
1606 | return NULL; |
1607 | } |
1608 | |
1609 | indexVars[i + 1] = -1; |
1610 | |
1611 | i = 0; |
1612 | if (index) { |
1613 | while (i < *index) i++; |
1614 | if (indexVars[i] == -1) return NULL; |
1615 | } |
1616 | |
1617 | entry = findEntryByIndex(config, indexVars[i]); |
1618 | if (!entry) return NULL; |
1619 | |
1620 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1621 | if (!line) return NULL; |
1622 | |
1623 | if (index) *index = indexVars[i]; |
1624 | return entry; |
1625 | } |
1626 | |
1627 | if (!strcmp(kernel, "DEFAULT")) { |
1628 | if (index && *index > config->defaultImage) { |
1629 | entry = NULL; |
1630 | } else { |
1631 | entry = findEntryByIndex(config, config->defaultImage); |
1632 | if (entry && entry->skip) |
1633 | entry = NULL; |
1634 | else if (index) |
1635 | *index = config->defaultImage; |
1636 | } |
1637 | } else if (!strcmp(kernel, "ALL")) { |
1638 | if (index) |
1639 | i = *index; |
1640 | else |
1641 | i = 0; |
1642 | |
1643 | while ((entry = findEntryByIndex(config, i))) { |
1644 | if (!entry->skip) break; |
1645 | i++; |
1646 | } |
1647 | |
1648 | if (entry && index) |
1649 | *index = i; |
1650 | } else { |
1651 | if (index) |
1652 | i = *index; |
1653 | else |
1654 | i = 0; |
1655 | |
1656 | if (!strncmp(kernel, "TITLE=", 6)) { |
1657 | prefix = ""; |
1658 | checkType = LT_TITLE; |
1659 | kernel += 6; |
1660 | } |
1661 | |
1662 | for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) { |
1663 | if (entry->skip) continue; |
1664 | |
1665 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry); |
1666 | |
1667 | /* check all the lines matching checkType */ |
1668 | for (line = entry->lines; line; line = line->next) { |
1669 | line = getLineByType(entry->multiboot && checkType == LT_KERNEL ? |
1670 | LT_KERNEL|LT_MBMODULE|LT_HYPER : |
1671 | checkType, line); |
1672 | if (!line) break; /* not found in this entry */ |
1673 | |
1674 | if (line && line->numElements >= 2) { |
1675 | rootspec = getRootSpecifier(line->elements[1].item); |
1676 | if (!strcmp(line->elements[1].item + |
1677 | ((rootspec != NULL) ? strlen(rootspec) : 0), |
1678 | kernel + strlen(prefix))) |
1679 | break; |
1680 | } |
1681 | } |
1682 | |
1683 | /* make sure this entry has a kernel identifier; this skips |
1684 | * non-Linux boot entries (could find netbsd etc, though, which is |
1685 | * unfortunate) |
1686 | */ |
1687 | if (line && getLineByType(LT_KERNEL|LT_HYPER, entry->lines)) |
1688 | break; /* found 'im! */ |
1689 | } |
1690 | |
1691 | if (index) *index = i; |
1692 | } |
1693 | |
1694 | return entry; |
1695 | } |
1696 | |
1697 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { |
1698 | struct singleEntry * entry; |
1699 | |
1700 | entry = cfg->entries; |
1701 | while (index && entry) { |
1702 | entry = entry->next; |
1703 | index--; |
1704 | } |
1705 | |
1706 | return entry; |
1707 | } |
1708 | |
1709 | /* Find a good template to use for the new kernel. An entry is |
1710 | * good if the kernel and mkinitrd exist (even if the entry |
1711 | * is going to be removed). Try and use the default entry, but |
1712 | * if that doesn't work just take the first. If we can't find one, |
1713 | * bail. */ |
1714 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, |
1715 | int * indexPtr, int skipRemoved, int flags) { |
1716 | struct singleEntry * entry, * entry2; |
1717 | int index; |
1718 | |
1719 | if (cfg->defaultImage > -1) { |
1720 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
1721 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
1722 | if (indexPtr) *indexPtr = cfg->defaultImage; |
1723 | return entry; |
1724 | } |
1725 | } |
1726 | |
1727 | index = 0; |
1728 | while ((entry = findEntryByIndex(cfg, index))) { |
1729 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
1730 | int j; |
1731 | for (j = 0; j < index; j++) { |
1732 | entry2 = findEntryByIndex(cfg, j); |
1733 | if (entry2->skip) index--; |
1734 | } |
1735 | if (indexPtr) *indexPtr = index; |
1736 | |
1737 | return entry; |
1738 | } |
1739 | |
1740 | index++; |
1741 | } |
1742 | |
1743 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); |
1744 | |
1745 | return NULL; |
1746 | } |
1747 | |
1748 | char * findBootPrefix(void) { |
1749 | struct stat sb, sb2; |
1750 | |
1751 | stat("/", &sb); |
1752 | #ifdef __ia64__ |
1753 | stat("/boot/efi/EFI/redhat/", &sb2); |
1754 | #else |
1755 | stat("/boot", &sb2); |
1756 | #endif |
1757 | |
1758 | if (sb.st_dev == sb2.st_dev) |
1759 | return strdup(""); |
1760 | |
1761 | #ifdef __ia64__ |
1762 | return strdup("/boot/efi/EFI/redhat/"); |
1763 | #else |
1764 | return strdup("/boot"); |
1765 | #endif |
1766 | } |
1767 | |
1768 | void markRemovedImage(struct grubConfig * cfg, const char * image, |
1769 | const char * prefix) { |
1770 | struct singleEntry * entry; |
1771 | |
1772 | if (!image) return; |
1773 | |
1774 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
1775 | entry->skip = 1; |
1776 | } |
1777 | |
1778 | void setDefaultImage(struct grubConfig * config, int hasNew, |
1779 | const char * defaultKernelPath, int newIsDefault, |
1780 | const char * prefix, int flags) { |
1781 | struct singleEntry * entry, * entry2, * newDefault; |
1782 | int i, j; |
1783 | |
1784 | if (newIsDefault) { |
1785 | config->defaultImage = 0; |
1786 | return; |
1787 | } else if (defaultKernelPath) { |
1788 | i = 0; |
1789 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { |
1790 | config->defaultImage = i; |
1791 | } else { |
1792 | config->defaultImage = -1; |
1793 | return; |
1794 | } |
1795 | } |
1796 | |
1797 | /* defaultImage now points to what we'd like to use, but before any order |
1798 | changes */ |
1799 | if ((config->defaultImage == DEFAULT_SAVED) || |
1800 | (config->defaultImage == DEFAULT_SAVED_GRUB2)) |
1801 | /* default is set to saved, we don't want to change it */ |
1802 | return; |
1803 | |
1804 | if (config->defaultImage > -1) |
1805 | entry = findEntryByIndex(config, config->defaultImage); |
1806 | else |
1807 | entry = NULL; |
1808 | |
1809 | if (entry && !entry->skip) { |
1810 | /* we can preserve the default */ |
1811 | if (hasNew) |
1812 | config->defaultImage++; |
1813 | |
1814 | /* count the number of entries erased before this one */ |
1815 | for (j = 0; j < config->defaultImage; j++) { |
1816 | entry2 = findEntryByIndex(config, j); |
1817 | if (entry2->skip) config->defaultImage--; |
1818 | } |
1819 | } else if (hasNew) { |
1820 | config->defaultImage = 0; |
1821 | } else { |
1822 | /* Either we just erased the default (or the default line was bad |
1823 | * to begin with) and didn't put a new one in. We'll use the first |
1824 | * valid image. */ |
1825 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, |
1826 | flags); |
1827 | if (!newDefault) |
1828 | config->defaultImage = -1; |
1829 | } |
1830 | } |
1831 | |
1832 | void setFallbackImage(struct grubConfig * config, int hasNew) { |
1833 | struct singleEntry * entry, * entry2; |
1834 | int j; |
1835 | |
1836 | if (config->fallbackImage == -1) return; |
1837 | |
1838 | entry = findEntryByIndex(config, config->fallbackImage); |
1839 | if (!entry || entry->skip) { |
1840 | config->fallbackImage = -1; |
1841 | return; |
1842 | } |
1843 | |
1844 | if (hasNew) |
1845 | config->fallbackImage++; |
1846 | |
1847 | /* count the number of entries erased before this one */ |
1848 | for (j = 0; j < config->fallbackImage; j++) { |
1849 | entry2 = findEntryByIndex(config, j); |
1850 | if (entry2->skip) config->fallbackImage--; |
1851 | } |
1852 | } |
1853 | |
1854 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { |
1855 | struct singleLine * line; |
1856 | char * root = NULL; |
1857 | int i; |
1858 | |
1859 | printf("index=%d\n", index); |
1860 | |
1861 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1862 | if (!line) { |
1863 | printf("non linux entry\n"); |
1864 | return; |
1865 | } |
1866 | |
1867 | printf("kernel=%s%s\n", prefix, line->elements[1].item); |
1868 | |
1869 | if (line->numElements >= 3) { |
1870 | printf("args=\""); |
1871 | i = 2; |
1872 | while (i < line->numElements) { |
1873 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
1874 | root = line->elements[i].item + 5; |
1875 | } else { |
1876 | printf("%s%s", line->elements[i].item, |
1877 | line->elements[i].indent); |
1878 | } |
1879 | |
1880 | i++; |
1881 | } |
1882 | printf("\"\n"); |
1883 | } else { |
1884 | line = getLineByType(LT_KERNELARGS, entry->lines); |
1885 | if (line) { |
1886 | char * s; |
1887 | |
1888 | printf("args=\""); |
1889 | i = 1; |
1890 | while (i < line->numElements) { |
1891 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
1892 | root = line->elements[i].item + 5; |
1893 | } else { |
1894 | s = line->elements[i].item; |
1895 | |
1896 | printf("%s%s", s, line->elements[i].indent); |
1897 | } |
1898 | |
1899 | i++; |
1900 | } |
1901 | |
1902 | s = line->elements[i - 1].indent; |
1903 | printf("\"\n"); |
1904 | } |
1905 | } |
1906 | |
1907 | if (!root) { |
1908 | line = getLineByType(LT_ROOT, entry->lines); |
1909 | if (line && line->numElements >= 2) |
1910 | root=line->elements[1].item; |
1911 | } |
1912 | |
1913 | if (root) { |
1914 | char * s = alloca(strlen(root) + 1); |
1915 | |
1916 | strcpy(s, root); |
1917 | if (s[strlen(s) - 1] == '"') |
1918 | s[strlen(s) - 1] = '\0'; |
1919 | /* make sure the root doesn't have a trailing " */ |
1920 | printf("root=%s\n", s); |
1921 | } |
1922 | |
1923 | line = getLineByType(LT_INITRD, entry->lines); |
1924 | |
1925 | if (line && line->numElements >= 2) { |
1926 | printf("initrd=%s", prefix); |
1927 | for (i = 1; i < line->numElements; i++) |
1928 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
1929 | printf("\n"); |
1930 | } |
1931 | |
1932 | line = getLineByType(LT_TITLE, entry->lines); |
1933 | if (line) { |
1934 | printf("title=%s\n", line->elements[1].item); |
1935 | } else { |
1936 | char * title; |
1937 | line = getLineByType(LT_MENUENTRY, entry->lines); |
1938 | title = grub2ExtractTitle(line); |
1939 | if (title) |
1940 | printf("title=%s\n", title); |
1941 | } |
1942 | } |
1943 | |
1944 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { |
1945 | FILE * in; |
1946 | char buf[1024]; |
1947 | char * chptr; |
1948 | char * start; |
1949 | char * param; |
1950 | |
1951 | in = fopen("/etc/conf.d/grub", "r"); |
1952 | if (!in) return 1; |
1953 | |
1954 | if (lbaPtr) *lbaPtr = 0; |
1955 | if (bootPtr) *bootPtr = NULL; |
1956 | |
1957 | while (fgets(buf, sizeof(buf), in)) { |
1958 | start = buf; |
1959 | while (isspace(*start)) start++; |
1960 | if (*start == '#') continue; |
1961 | |
1962 | chptr = strchr(start, '='); |
1963 | if (!chptr) continue; |
1964 | chptr--; |
1965 | while (*chptr && isspace(*chptr)) chptr--; |
1966 | chptr++; |
1967 | *chptr = '\0'; |
1968 | |
1969 | param = chptr + 1; |
1970 | while (*param && isspace(*param)) param++; |
1971 | if (*param == '=') { |
1972 | param++; |
1973 | while (*param && isspace(*param)) param++; |
1974 | } |
1975 | |
1976 | chptr = param; |
1977 | while (*chptr && !isspace(*chptr)) chptr++; |
1978 | *chptr = '\0'; |
1979 | |
1980 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
1981 | *lbaPtr = 1; |
1982 | else if (!strcmp(start, "boot") && bootPtr) |
1983 | *bootPtr = strdup(param); |
1984 | } |
1985 | |
1986 | fclose(in); |
1987 | |
1988 | return 0; |
1989 | } |
1990 | |
1991 | void dumpSysconfigGrub(void) { |
1992 | char * boot; |
1993 | int lba; |
1994 | |
1995 | if (!parseSysconfigGrub(&lba, &boot)) { |
1996 | if (lba) printf("lba\n"); |
1997 | if (boot) printf("boot=%s\n", boot); |
1998 | } |
1999 | } |
2000 | |
2001 | int displayInfo(struct grubConfig * config, char * kernel, |
2002 | const char * prefix) { |
2003 | int i = 0; |
2004 | struct singleEntry * entry; |
2005 | struct singleLine * line; |
2006 | |
2007 | entry = findEntryByPath(config, kernel, prefix, &i); |
2008 | if (!entry) { |
2009 | fprintf(stderr, _("grubby: kernel not found\n")); |
2010 | return 1; |
2011 | } |
2012 | |
2013 | /* this is a horrible hack to support /etc/conf.d/grub; there must |
2014 | be a better way */ |
2015 | if (config->cfi == &grubConfigType) { |
2016 | dumpSysconfigGrub(); |
2017 | } else { |
2018 | line = getLineByType(LT_BOOT, config->theLines); |
2019 | if (line && line->numElements >= 1) { |
2020 | printf("boot=%s\n", line->elements[1].item); |
2021 | } |
2022 | |
2023 | line = getLineByType(LT_LBA, config->theLines); |
2024 | if (line) printf("lba\n"); |
2025 | } |
2026 | |
2027 | displayEntry(entry, prefix, i); |
2028 | |
2029 | i++; |
2030 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
2031 | displayEntry(entry, prefix, i); |
2032 | i++; |
2033 | } |
2034 | |
2035 | return 0; |
2036 | } |
2037 | |
2038 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
2039 | struct singleLine * tmplLine, |
2040 | struct singleLine * prevLine, |
2041 | const char * val, |
2042 | struct configFileInfo * cfi) |
2043 | { |
2044 | struct singleLine * newLine = lineDup(tmplLine); |
2045 | |
2046 | if (val) { |
2047 | /* override the inherited value with our own. |
2048 | * This is a little weak because it only applies to elements[1] |
2049 | */ |
2050 | if (newLine->numElements > 1) |
2051 | removeElement(newLine, 1); |
2052 | insertElement(newLine, val, 1, cfi); |
2053 | |
2054 | /* but try to keep the rootspec from the template... sigh */ |
2055 | if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD)) { |
2056 | char * rootspec = getRootSpecifier(tmplLine->elements[1].item); |
2057 | if (rootspec != NULL) { |
2058 | free(newLine->elements[1].item); |
2059 | newLine->elements[1].item = |
2060 | sdupprintf("%s%s", rootspec, val); |
2061 | } |
2062 | } |
2063 | } |
2064 | |
2065 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? |
2066 | newLine->elements[0].item : ""); |
2067 | |
2068 | if (!entry->lines) { |
2069 | /* first one on the list */ |
2070 | entry->lines = newLine; |
2071 | } else if (prevLine) { |
2072 | /* add after prevLine */ |
2073 | newLine->next = prevLine->next; |
2074 | prevLine->next = newLine; |
2075 | } |
2076 | |
2077 | return newLine; |
2078 | } |
2079 | |
2080 | /* val may be NULL */ |
2081 | struct singleLine * addLine(struct singleEntry * entry, |
2082 | struct configFileInfo * cfi, |
2083 | enum lineType_e type, char * defaultIndent, |
2084 | const char * val) { |
2085 | struct singleLine * line, * prev; |
2086 | struct keywordTypes * kw; |
2087 | struct singleLine tmpl; |
2088 | |
2089 | /* NB: This function shouldn't allocate items on the heap, rather on the |
2090 | * stack since it calls addLineTmpl which will make copies. |
2091 | */ |
2092 | |
2093 | if (type == LT_TITLE && cfi->titleBracketed) { |
2094 | /* we're doing a bracketed title (zipl) */ |
2095 | tmpl.type = type; |
2096 | tmpl.numElements = 1; |
2097 | tmpl.elements = alloca(sizeof(*tmpl.elements)); |
2098 | tmpl.elements[0].item = alloca(strlen(val)+3); |
2099 | sprintf(tmpl.elements[0].item, "[%s]", val); |
2100 | tmpl.elements[0].indent = ""; |
2101 | val = NULL; |
2102 | } else if (type == LT_MENUENTRY) { |
2103 | char *lineend = "--class gnu-linux --class gnu --class os {"; |
2104 | if (!val) { |
2105 | fprintf(stderr, "Line type LT_MENUENTRY requires a value\n"); |
2106 | abort(); |
2107 | } |
2108 | kw = getKeywordByType(type, cfi); |
2109 | if (!kw) { |
2110 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2111 | abort(); |
2112 | } |
2113 | tmpl.indent = ""; |
2114 | tmpl.type = type; |
2115 | tmpl.numElements = 3; |
2116 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2117 | tmpl.elements[0].item = kw->key; |
2118 | tmpl.elements[0].indent = alloca(2); |
2119 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2120 | tmpl.elements[1].item = (char *)val; |
2121 | tmpl.elements[1].indent = alloca(2); |
2122 | sprintf(tmpl.elements[1].indent, "%c", kw->nextChar); |
2123 | tmpl.elements[2].item = alloca(strlen(lineend)+1); |
2124 | strcpy(tmpl.elements[2].item, lineend); |
2125 | tmpl.elements[2].indent = ""; |
2126 | } else { |
2127 | kw = getKeywordByType(type, cfi); |
2128 | if (!kw) { |
2129 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2130 | abort(); |
2131 | } |
2132 | tmpl.type = type; |
2133 | tmpl.numElements = val ? 2 : 1; |
2134 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2135 | tmpl.elements[0].item = kw->key; |
2136 | tmpl.elements[0].indent = alloca(2); |
2137 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2138 | if (val) { |
2139 | tmpl.elements[1].item = (char *)val; |
2140 | tmpl.elements[1].indent = ""; |
2141 | } |
2142 | } |
2143 | |
2144 | /* The last non-empty line gives us the indention to us and the line |
2145 | to insert after. Note that comments are considered empty lines, which |
2146 | may not be ideal? If there are no lines or we are looking at the |
2147 | first line, we use defaultIndent (the first line is normally indented |
2148 | differently from the rest) */ |
2149 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
2150 | if (line->numElements) prev = line; |
2151 | /* fall back on the last line if prev isn't otherwise set */ |
2152 | if (!line->next && !prev) prev = line; |
2153 | } |
2154 | |
2155 | struct singleLine *menuEntry; |
2156 | menuEntry = getLineByType(LT_MENUENTRY, entry->lines); |
2157 | if (tmpl.type == LT_ENTRY_END) { |
2158 | if (menuEntry) |
2159 | tmpl.indent = menuEntry->indent; |
2160 | else |
2161 | tmpl.indent = defaultIndent ?: ""; |
2162 | } else if (tmpl.type != LT_MENUENTRY) { |
2163 | if (menuEntry) |
2164 | tmpl.indent = "\t"; |
2165 | else if (prev == entry->lines) |
2166 | tmpl.indent = defaultIndent ?: ""; |
2167 | else |
2168 | tmpl.indent = prev->indent; |
2169 | } |
2170 | |
2171 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
2172 | } |
2173 | |
2174 | void removeLine(struct singleEntry * entry, struct singleLine * line) { |
2175 | struct singleLine * prev; |
2176 | int i; |
2177 | |
2178 | for (i = 0; i < line->numElements; i++) { |
2179 | free(line->elements[i].item); |
2180 | free(line->elements[i].indent); |
2181 | } |
2182 | free(line->elements); |
2183 | free(line->indent); |
2184 | |
2185 | if (line == entry->lines) { |
2186 | entry->lines = line->next; |
2187 | } else { |
2188 | prev = entry->lines; |
2189 | while (prev->next != line) prev = prev->next; |
2190 | prev->next = line->next; |
2191 | } |
2192 | |
2193 | free(line); |
2194 | } |
2195 | |
2196 | static void requote(struct singleLine *tmplLine, struct configFileInfo * cfi) |
2197 | { |
2198 | struct singleLine newLine = { |
2199 | .indent = tmplLine->indent, |
2200 | .type = tmplLine->type, |
2201 | .next = tmplLine->next, |
2202 | }; |
2203 | int firstQuotedItem = -1; |
2204 | int quoteLen = 0; |
2205 | int j; |
2206 | int element = 0; |
2207 | char *c; |
2208 | |
2209 | c = malloc(strlen(tmplLine->elements[0].item) + 1); |
2210 | strcpy(c, tmplLine->elements[0].item); |
2211 | insertElement(&newLine, c, element++, cfi); |
2212 | free(c); |
2213 | c = NULL; |
2214 | |
2215 | for (j = 1; j < tmplLine->numElements; j++) { |
2216 | if (firstQuotedItem == -1) { |
2217 | quoteLen += strlen(tmplLine->elements[j].item); |
2218 | |
2219 | if (isquote(tmplLine->elements[j].item[0])) { |
2220 | firstQuotedItem = j; |
2221 | quoteLen += strlen(tmplLine->elements[j].indent); |
2222 | } else { |
2223 | c = malloc(quoteLen + 1); |
2224 | strcpy(c, tmplLine->elements[j].item); |
2225 | insertElement(&newLine, c, element++, cfi); |
2226 | free(c); |
2227 | quoteLen = 0; |
2228 | } |
2229 | } else { |
2230 | int itemlen = strlen(tmplLine->elements[j].item); |
2231 | quoteLen += itemlen; |
2232 | quoteLen += strlen(tmplLine->elements[j].indent); |
2233 | |
2234 | if (isquote(tmplLine->elements[j].item[itemlen - 1])) { |
2235 | c = malloc(quoteLen + 1); |
2236 | c[0] = '\0'; |
2237 | for (int i = firstQuotedItem; i < j+1; i++) { |
2238 | strcat(c, tmplLine->elements[i].item); |
2239 | strcat(c, tmplLine->elements[i].indent); |
2240 | } |
2241 | insertElement(&newLine, c, element++, cfi); |
2242 | free(c); |
2243 | |
2244 | firstQuotedItem = -1; |
2245 | quoteLen = 0; |
2246 | } |
2247 | } |
2248 | } |
2249 | while (tmplLine->numElements) |
2250 | removeElement(tmplLine, 0); |
2251 | if (tmplLine->elements) |
2252 | free(tmplLine->elements); |
2253 | |
2254 | tmplLine->numElements = newLine.numElements; |
2255 | tmplLine->elements = newLine.elements; |
2256 | } |
2257 | |
2258 | static void insertElement(struct singleLine * line, |
2259 | const char * item, int insertHere, |
2260 | struct configFileInfo * cfi) |
2261 | { |
2262 | struct keywordTypes * kw; |
2263 | char indent[2] = ""; |
2264 | |
2265 | /* sanity check */ |
2266 | if (insertHere > line->numElements) { |
2267 | dbgPrintf("insertElement() adjusting insertHere from %d to %d\n", |
2268 | insertHere, line->numElements); |
2269 | insertHere = line->numElements; |
2270 | } |
2271 | |
2272 | line->elements = realloc(line->elements, (line->numElements + 1) * |
2273 | sizeof(*line->elements)); |
2274 | memmove(&line->elements[insertHere+1], |
2275 | &line->elements[insertHere], |
2276 | (line->numElements - insertHere) * |
2277 | sizeof(*line->elements)); |
2278 | line->elements[insertHere].item = strdup(item); |
2279 | |
2280 | kw = getKeywordByType(line->type, cfi); |
2281 | |
2282 | if (line->numElements == 0) { |
2283 | indent[0] = '\0'; |
2284 | } else if (insertHere == 0) { |
2285 | indent[0] = kw->nextChar; |
2286 | } else if (kw->separatorChar != '\0') { |
2287 | indent[0] = kw->separatorChar; |
2288 | } else { |
2289 | indent[0] = ' '; |
2290 | } |
2291 | |
2292 | if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') { |
2293 | /* move the end-of-line forward */ |
2294 | line->elements[insertHere].indent = |
2295 | line->elements[insertHere-1].indent; |
2296 | line->elements[insertHere-1].indent = strdup(indent); |
2297 | } else { |
2298 | line->elements[insertHere].indent = strdup(indent); |
2299 | } |
2300 | |
2301 | line->numElements++; |
2302 | |
2303 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", |
2304 | line->elements[0].item, |
2305 | line->elements[insertHere].item, |
2306 | line->elements[insertHere].indent, |
2307 | insertHere); |
2308 | } |
2309 | |
2310 | static void removeElement(struct singleLine * line, int removeHere) { |
2311 | int i; |
2312 | |
2313 | /* sanity check */ |
2314 | if (removeHere >= line->numElements) return; |
2315 | |
2316 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, |
2317 | removeHere, line->elements[removeHere].item); |
2318 | |
2319 | free(line->elements[removeHere].item); |
2320 | |
2321 | if (removeHere > 1) { |
2322 | /* previous argument gets this argument's post-indentation */ |
2323 | free(line->elements[removeHere-1].indent); |
2324 | line->elements[removeHere-1].indent = |
2325 | line->elements[removeHere].indent; |
2326 | } else { |
2327 | free(line->elements[removeHere].indent); |
2328 | } |
2329 | |
2330 | /* now collapse the array, but don't bother to realloc smaller */ |
2331 | for (i = removeHere; i < line->numElements - 1; i++) |
2332 | line->elements[i] = line->elements[i + 1]; |
2333 | |
2334 | line->numElements--; |
2335 | } |
2336 | |
2337 | int argMatch(const char * one, const char * two) { |
2338 | char * first, * second; |
2339 | char * chptr; |
2340 | |
2341 | first = strcpy(alloca(strlen(one) + 1), one); |
2342 | second = strcpy(alloca(strlen(two) + 1), two); |
2343 | |
2344 | chptr = strchr(first, '='); |
2345 | if (chptr) *chptr = '\0'; |
2346 | |
2347 | chptr = strchr(second, '='); |
2348 | if (chptr) *chptr = '\0'; |
2349 | |
2350 | return strcmp(first, second); |
2351 | } |
2352 | |
2353 | int updateActualImage(struct grubConfig * cfg, const char * image, |
2354 | const char * prefix, const char * addArgs, |
2355 | const char * removeArgs, int multibootArgs) { |
2356 | struct singleEntry * entry; |
2357 | struct singleLine * line, * rootLine; |
2358 | int index = 0; |
2359 | int i, k; |
2360 | const char ** newArgs, ** oldArgs; |
2361 | const char ** arg; |
2362 | int useKernelArgs, useRoot; |
2363 | int firstElement; |
2364 | int *usedElements; |
2365 | int doreplace; |
2366 | |
2367 | if (!image) return 0; |
2368 | |
2369 | if (!addArgs) { |
2370 | newArgs = malloc(sizeof(*newArgs)); |
2371 | *newArgs = NULL; |
2372 | } else { |
2373 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
2374 | fprintf(stderr, |
2375 | _("grubby: error separating arguments '%s'\n"), addArgs); |
2376 | return 1; |
2377 | } |
2378 | } |
2379 | |
2380 | if (!removeArgs) { |
2381 | oldArgs = malloc(sizeof(*oldArgs)); |
2382 | *oldArgs = NULL; |
2383 | } else { |
2384 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
2385 | fprintf(stderr, |
2386 | _("grubby: error separating arguments '%s'\n"), removeArgs); |
2387 | free(newArgs); |
2388 | return 1; |
2389 | } |
2390 | } |
2391 | |
2392 | |
2393 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
2394 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); |
2395 | |
2396 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
2397 | && !multibootArgs); |
2398 | |
2399 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
2400 | |
2401 | if (multibootArgs && !entry->multiboot) |
2402 | continue; |
2403 | |
2404 | /* Determine where to put the args. If this config supports |
2405 | * LT_KERNELARGS, use that. Otherwise use |
2406 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. |
2407 | */ |
2408 | if (useKernelArgs) { |
2409 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2410 | if (!line) { |
2411 | /* no LT_KERNELARGS, need to add it */ |
2412 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, |
2413 | cfg->secondaryIndent, NULL); |
2414 | } |
2415 | firstElement = 1; |
2416 | |
2417 | } else if (multibootArgs) { |
2418 | line = getLineByType(LT_HYPER, entry->lines); |
2419 | if (!line) { |
2420 | /* a multiboot entry without LT_HYPER? */ |
2421 | continue; |
2422 | } |
2423 | firstElement = 2; |
2424 | |
2425 | } else { |
2426 | line = getLineByType(LT_KERNEL|LT_MBMODULE, entry->lines); |
2427 | if (!line) { |
2428 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ |
2429 | continue; |
2430 | } |
2431 | firstElement = 2; |
2432 | } |
2433 | |
2434 | /* handle the elilo case which does: |
2435 | * append="hypervisor args -- kernel args" |
2436 | */ |
2437 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { |
2438 | /* this is a multiboot entry, make sure there's |
2439 | * -- on the args line |
2440 | */ |
2441 | for (i = firstElement; i < line->numElements; i++) { |
2442 | if (!strcmp(line->elements[i].item, "--")) |
2443 | break; |
2444 | } |
2445 | if (i == line->numElements) { |
2446 | /* assume all existing args are kernel args, |
2447 | * prepend -- to make it official |
2448 | */ |
2449 | insertElement(line, "--", firstElement, cfg->cfi); |
2450 | i = firstElement; |
2451 | } |
2452 | if (!multibootArgs) { |
2453 | /* kernel args start after the -- */ |
2454 | firstElement = i + 1; |
2455 | } |
2456 | } else if (cfg->cfi->mbConcatArgs) { |
2457 | /* this is a non-multiboot entry, remove hyper args */ |
2458 | for (i = firstElement; i < line->numElements; i++) { |
2459 | if (!strcmp(line->elements[i].item, "--")) |
2460 | break; |
2461 | } |
2462 | if (i < line->numElements) { |
2463 | /* remove args up to -- */ |
2464 | while (strcmp(line->elements[firstElement].item, "--")) |
2465 | removeElement(line, firstElement); |
2466 | /* remove -- */ |
2467 | removeElement(line, firstElement); |
2468 | } |
2469 | } |
2470 | |
2471 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
2472 | |
2473 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
2474 | |
2475 | doreplace = 1; |
2476 | for (i = firstElement; i < line->numElements; i++) { |
2477 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2478 | !strcmp(line->elements[i].item, "--")) |
2479 | { |
2480 | /* reached the end of hyper args, insert here */ |
2481 | doreplace = 0; |
2482 | break; |
2483 | } |
2484 | if (usedElements[i]) |
2485 | continue; |
2486 | if (!argMatch(line->elements[i].item, *arg)) { |
2487 | usedElements[i]=1; |
2488 | break; |
2489 | } |
2490 | } |
2491 | |
2492 | if (i < line->numElements && doreplace) { |
2493 | /* direct replacement */ |
2494 | free(line->elements[i].item); |
2495 | line->elements[i].item = strdup(*arg); |
2496 | |
2497 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
2498 | /* root= replacement */ |
2499 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2500 | if (rootLine) { |
2501 | free(rootLine->elements[1].item); |
2502 | rootLine->elements[1].item = strdup(*arg + 5); |
2503 | } else { |
2504 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, |
2505 | cfg->secondaryIndent, *arg + 5); |
2506 | } |
2507 | } |
2508 | |
2509 | else { |
2510 | /* insert/append */ |
2511 | insertElement(line, *arg, i, cfg->cfi); |
2512 | usedElements = realloc(usedElements, line->numElements * |
2513 | sizeof(*usedElements)); |
2514 | memmove(&usedElements[i + 1], &usedElements[i], |
2515 | line->numElements - i - 1); |
2516 | usedElements[i] = 1; |
2517 | |
2518 | /* if we updated a root= here even though there is a |
2519 | LT_ROOT available we need to remove the LT_ROOT entry |
2520 | (this will happen if we switch from a device to a label) */ |
2521 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
2522 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2523 | if (rootLine) |
2524 | removeLine(entry, rootLine); |
2525 | } |
2526 | } |
2527 | } |
2528 | |
2529 | free(usedElements); |
2530 | |
2531 | for (arg = oldArgs; *arg; arg++) { |
2532 | for (i = firstElement; i < line->numElements; i++) { |
2533 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2534 | !strcmp(line->elements[i].item, "--")) |
2535 | /* reached the end of hyper args, stop here */ |
2536 | break; |
2537 | if (!argMatch(line->elements[i].item, *arg)) { |
2538 | removeElement(line, i); |
2539 | break; |
2540 | } |
2541 | } |
2542 | /* handle removing LT_ROOT line too */ |
2543 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
2544 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2545 | if (rootLine) |
2546 | removeLine(entry, rootLine); |
2547 | } |
2548 | } |
2549 | |
2550 | if (line->numElements == 1) { |
2551 | /* don't need the line at all (note it has to be a |
2552 | LT_KERNELARGS for this to happen */ |
2553 | removeLine(entry, line); |
2554 | } |
2555 | } |
2556 | |
2557 | free(newArgs); |
2558 | free(oldArgs); |
2559 | |
2560 | return 0; |
2561 | } |
2562 | |
2563 | int updateImage(struct grubConfig * cfg, const char * image, |
2564 | const char * prefix, const char * addArgs, |
2565 | const char * removeArgs, |
2566 | const char * addMBArgs, const char * removeMBArgs) { |
2567 | int rc = 0; |
2568 | |
2569 | if (!image) return rc; |
2570 | |
2571 | /* update the main args first... */ |
2572 | if (addArgs || removeArgs) |
2573 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); |
2574 | if (rc) return rc; |
2575 | |
2576 | /* and now any multiboot args */ |
2577 | if (addMBArgs || removeMBArgs) |
2578 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); |
2579 | return rc; |
2580 | } |
2581 | |
2582 | int updateInitrd(struct grubConfig * cfg, const char * image, |
2583 | const char * prefix, const char * initrd) { |
2584 | struct singleEntry * entry; |
2585 | struct singleLine * line, * kernelLine, *endLine = NULL; |
2586 | int index = 0; |
2587 | |
2588 | if (!image) return 0; |
2589 | |
2590 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
2591 | kernelLine = getLineByType(LT_KERNEL, entry->lines); |
2592 | if (!kernelLine) continue; |
2593 | |
2594 | line = getLineByType(LT_INITRD, entry->lines); |
2595 | if (line) |
2596 | removeLine(entry, line); |
2597 | if (prefix) { |
2598 | int prefixLen = strlen(prefix); |
2599 | if (!strncmp(initrd, prefix, prefixLen)) |
2600 | initrd += prefixLen; |
2601 | } |
2602 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
2603 | if (endLine) |
2604 | removeLine(entry, endLine); |
2605 | line = addLine(entry, cfg->cfi, LT_INITRD, kernelLine->indent, initrd); |
2606 | if (!line) |
2607 | return 1; |
2608 | if (endLine) { |
2609 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
2610 | if (!line) |
2611 | return 1; |
2612 | } |
2613 | |
2614 | break; |
2615 | } |
2616 | |
2617 | return 0; |
2618 | } |
2619 | |
2620 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { |
2621 | int fd; |
2622 | unsigned char bootSect[512]; |
2623 | int offset; |
2624 | |
2625 | fd = open(device, O_RDONLY); |
2626 | if (fd < 0) { |
2627 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
2628 | device, strerror(errno)); |
2629 | return 1; |
2630 | } |
2631 | |
2632 | if (read(fd, bootSect, 512) != 512) { |
2633 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2634 | device, strerror(errno)); |
2635 | return 1; |
2636 | } |
2637 | close(fd); |
2638 | |
2639 | /* first three bytes should match, a jmp short should be in there */ |
2640 | if (memcmp(boot, bootSect, 3)) |
2641 | return 0; |
2642 | |
2643 | if (boot[1] == JMP_SHORT_OPCODE) { |
2644 | offset = boot[2] + 2; |
2645 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
2646 | offset = (boot[3] << 8) + boot[2] + 2; |
2647 | } else if (boot[0] == JMP_SHORT_OPCODE) { |
2648 | offset = boot[1] + 2; |
2649 | /* |
2650 | * it looks like grub, when copying stage1 into the mbr, patches stage1 |
2651 | * right after the JMP location, replacing other instructions such as |
2652 | * JMPs for NOOPs. So, relax the check a little bit by skipping those |
2653 | * different bytes. |
2654 | */ |
2655 | if ((bootSect[offset + 1] == NOOP_OPCODE) |
2656 | && (bootSect[offset + 2] == NOOP_OPCODE)) { |
2657 | offset = offset + 3; |
2658 | } |
2659 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
2660 | offset = (boot[2] << 8) + boot[1] + 2; |
2661 | } else { |
2662 | return 0; |
2663 | } |
2664 | |
2665 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
2666 | return 0; |
2667 | |
2668 | return 2; |
2669 | } |
2670 | |
2671 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { |
2672 | int fd; |
2673 | char buf[65536]; |
2674 | char * end; |
2675 | char * chptr; |
2676 | char * chptr2; |
2677 | int rc; |
2678 | |
2679 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
2680 | *raw* devices listed in there */ |
2681 | |
2682 | if (!strncmp(mdDev, "/dev/", 5)) |
2683 | mdDev += 5; |
2684 | |
2685 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
2686 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
2687 | strerror(errno)); |
2688 | return 2; |
2689 | } |
2690 | |
2691 | rc = read(fd, buf, sizeof(buf) - 1); |
2692 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
2693 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
2694 | strerror(errno)); |
2695 | close(fd); |
2696 | return 2; |
2697 | } |
2698 | close(fd); |
2699 | buf[rc] = '\0'; |
2700 | |
2701 | chptr = buf; |
2702 | while (*chptr) { |
2703 | end = strchr(chptr, '\n'); |
2704 | if (!end) break; |
2705 | *end = '\0'; |
2706 | |
2707 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
2708 | chptr[strlen(mdDev)] == ' ') { |
2709 | |
2710 | /* found the device */ |
2711 | while (*chptr && *chptr != ':') chptr++; |
2712 | chptr++; |
2713 | while (*chptr && isspace(*chptr)) chptr++; |
2714 | |
2715 | /* skip the "active" bit */ |
2716 | while (*chptr && !isspace(*chptr)) chptr++; |
2717 | while (*chptr && isspace(*chptr)) chptr++; |
2718 | |
2719 | /* skip the raid level */ |
2720 | while (*chptr && !isspace(*chptr)) chptr++; |
2721 | while (*chptr && isspace(*chptr)) chptr++; |
2722 | |
2723 | /* everything else is partition stuff */ |
2724 | while (*chptr) { |
2725 | chptr2 = chptr; |
2726 | while (*chptr2 && *chptr2 != '[') chptr2++; |
2727 | if (!*chptr2) break; |
2728 | |
2729 | /* yank off the numbers at the end */ |
2730 | chptr2--; |
2731 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; |
2732 | chptr2++; |
2733 | *chptr2 = '\0'; |
2734 | |
2735 | /* Better, now we need the /dev/ back. We're done with |
2736 | * everything before this point, so we can just put |
2737 | * the /dev/ part there. There will always be room. */ |
2738 | memcpy(chptr - 5, "/dev/", 5); |
2739 | rc = checkDeviceBootloader(chptr - 5, boot); |
2740 | if (rc != 2) { |
2741 | return rc; |
2742 | } |
2743 | |
2744 | chptr = chptr2 + 1; |
2745 | /* skip the [11] bit */ |
2746 | while (*chptr && !isspace(*chptr)) chptr++; |
2747 | /* and move to the next one */ |
2748 | while (*chptr && isspace(*chptr)) chptr++; |
2749 | } |
2750 | |
2751 | /* we're good to go */ |
2752 | return 2; |
2753 | } |
2754 | |
2755 | chptr = end + 1; |
2756 | } |
2757 | |
2758 | fprintf(stderr, |
2759 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
2760 | mdDev); |
2761 | return 0; |
2762 | } |
2763 | |
2764 | int checkForLilo(struct grubConfig * config) { |
2765 | int fd; |
2766 | unsigned char boot[512]; |
2767 | struct singleLine * line; |
2768 | |
2769 | for (line = config->theLines; line; line = line->next) |
2770 | if (line->type == LT_BOOT) break; |
2771 | |
2772 | if (!line) { |
2773 | fprintf(stderr, |
2774 | _("grubby: no boot line found in lilo configuration\n")); |
2775 | return 1; |
2776 | } |
2777 | |
2778 | if (line->numElements != 2) return 1; |
2779 | |
2780 | fd = open("/boot/boot.b", O_RDONLY); |
2781 | if (fd < 0) { |
2782 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
2783 | "/boot/boot.b", strerror(errno)); |
2784 | return 1; |
2785 | } |
2786 | |
2787 | if (read(fd, boot, 512) != 512) { |
2788 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2789 | "/boot/boot.b", strerror(errno)); |
2790 | return 1; |
2791 | } |
2792 | close(fd); |
2793 | |
2794 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
2795 | return checkLiloOnRaid(line->elements[1].item, boot); |
2796 | |
2797 | return checkDeviceBootloader(line->elements[1].item, boot); |
2798 | } |
2799 | |
2800 | int checkForGrub2(struct grubConfig * config) { |
2801 | if (!access("/etc/grub.d/", R_OK)) |
2802 | return 2; |
2803 | |
2804 | return 1; |
2805 | } |
2806 | |
2807 | int checkForGrub(struct grubConfig * config) { |
2808 | int fd; |
2809 | unsigned char bootSect[512]; |
2810 | char * boot; |
2811 | |
2812 | if (parseSysconfigGrub(NULL, &boot)) |
2813 | return 0; |
2814 | |
2815 | /* assume grub is not installed -- not an error condition */ |
2816 | if (!boot) |
2817 | return 0; |
2818 | |
2819 | fd = open("/boot/grub/stage1", O_RDONLY); |
2820 | if (fd < 0) |
2821 | /* this doesn't exist if grub hasn't been installed */ |
2822 | return 0; |
2823 | |
2824 | if (read(fd, bootSect, 512) != 512) { |
2825 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2826 | "/boot/grub/stage1", strerror(errno)); |
2827 | close(fd); |
2828 | return 1; |
2829 | } |
2830 | close(fd); |
2831 | |
2832 | return checkDeviceBootloader(boot, bootSect); |
2833 | } |
2834 | |
2835 | int checkForExtLinux(struct grubConfig * config) { |
2836 | int fd; |
2837 | unsigned char bootSect[512]; |
2838 | char * boot; |
2839 | char executable[] = "/boot/extlinux/extlinux"; |
2840 | |
2841 | printf("entered: checkForExtLinux()\n"); |
2842 | |
2843 | if (parseSysconfigGrub(NULL, &boot)) |
2844 | return 0; |
2845 | |
2846 | /* assume grub is not installed -- not an error condition */ |
2847 | if (!boot) |
2848 | return 0; |
2849 | |
2850 | fd = open(executable, O_RDONLY); |
2851 | if (fd < 0) |
2852 | /* this doesn't exist if grub hasn't been installed */ |
2853 | return 0; |
2854 | |
2855 | if (read(fd, bootSect, 512) != 512) { |
2856 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2857 | executable, strerror(errno)); |
2858 | return 1; |
2859 | } |
2860 | close(fd); |
2861 | |
2862 | return checkDeviceBootloader(boot, bootSect); |
2863 | } |
2864 | |
2865 | static char * getRootSpecifier(char * str) { |
2866 | char * idx, * rootspec = NULL; |
2867 | |
2868 | if (*str == '(') { |
2869 | idx = rootspec = strdup(str); |
2870 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; |
2871 | *(++idx) = '\0'; |
2872 | } |
2873 | return rootspec; |
2874 | } |
2875 | |
2876 | static char * getInitrdVal(struct grubConfig * config, |
2877 | const char * prefix, struct singleLine *tmplLine, |
2878 | const char * newKernelInitrd, |
2879 | char ** extraInitrds, int extraInitrdCount) |
2880 | { |
2881 | char *initrdVal, *end; |
2882 | int i; |
2883 | size_t totalSize; |
2884 | size_t prefixLen; |
2885 | char separatorChar; |
2886 | |
2887 | prefixLen = strlen(prefix); |
2888 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */; |
2889 | |
2890 | for (i = 0; i < extraInitrdCount; i++) { |
2891 | totalSize += sizeof(separatorChar); |
2892 | totalSize += strlen(extraInitrds[i]) - prefixLen; |
2893 | } |
2894 | |
2895 | initrdVal = end = malloc(totalSize); |
2896 | |
2897 | end = stpcpy (end, newKernelInitrd + prefixLen); |
2898 | |
2899 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; |
2900 | for (i = 0; i < extraInitrdCount; i++) { |
2901 | const char *extraInitrd; |
2902 | int j; |
2903 | |
2904 | extraInitrd = extraInitrds[i] + prefixLen; |
2905 | /* Don't add entries that are already there */ |
2906 | if (tmplLine != NULL) { |
2907 | for (j = 2; j < tmplLine->numElements; j++) |
2908 | if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0) |
2909 | break; |
2910 | |
2911 | if (j != tmplLine->numElements) |
2912 | continue; |
2913 | } |
2914 | |
2915 | *end++ = separatorChar; |
2916 | end = stpcpy(end, extraInitrd); |
2917 | } |
2918 | |
2919 | return initrdVal; |
2920 | } |
2921 | |
2922 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, |
2923 | const char * prefix, |
2924 | char * newKernelPath, char * newKernelTitle, |
2925 | char * newKernelArgs, char * newKernelInitrd, |
2926 | char ** extraInitrds, int extraInitrdCount, |
2927 | char * newMBKernel, char * newMBKernelArgs) { |
2928 | struct singleEntry * new; |
2929 | struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL; |
2930 | int needs; |
2931 | char * chptr; |
2932 | |
2933 | if (!newKernelPath) return 0; |
2934 | |
2935 | /* if the newKernelTitle is too long silently munge it into something |
2936 | * we can live with. truncating is first check, then we'll just mess with |
2937 | * it until it looks better */ |
2938 | if (config->cfi->maxTitleLength && |
2939 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
2940 | char * buf = alloca(config->cfi->maxTitleLength + 7); |
2941 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); |
2942 | int i = 1; |
2943 | |
2944 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); |
2945 | while (findEntryByPath(config, buf, NULL, NULL)) { |
2946 | sprintf(numBuf, "%d", i++); |
2947 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
2948 | } |
2949 | |
2950 | newKernelTitle = buf + 6; |
2951 | } |
2952 | |
2953 | new = malloc(sizeof(*new)); |
2954 | new->skip = 0; |
2955 | new->multiboot = 0; |
2956 | new->next = config->entries; |
2957 | new->lines = NULL; |
2958 | config->entries = new; |
2959 | |
2960 | /* copy/update from the template */ |
2961 | needs = NEED_KERNEL | NEED_TITLE; |
2962 | if (newKernelInitrd) |
2963 | needs |= NEED_INITRD; |
2964 | if (newMBKernel) { |
2965 | needs |= NEED_MB; |
2966 | new->multiboot = 1; |
2967 | } |
2968 | |
2969 | if (template) { |
2970 | for (masterLine = template->lines; |
2971 | masterLine && (tmplLine = lineDup(masterLine)); |
2972 | lineFree(tmplLine), masterLine = masterLine->next) |
2973 | { |
2974 | dbgPrintf("addNewKernel processing %d\n", tmplLine->type); |
2975 | |
2976 | /* skip comments */ |
2977 | chptr = tmplLine->indent; |
2978 | while (*chptr && isspace(*chptr)) chptr++; |
2979 | if (*chptr == '#') continue; |
2980 | |
2981 | if (tmplLine->type == LT_KERNEL && |
2982 | tmplLine->numElements >= 2) { |
2983 | if (!template->multiboot && (needs & NEED_MB)) { |
2984 | /* it's not a multiboot template and this is the kernel |
2985 | * line. Try to be intelligent about inserting the |
2986 | * hypervisor at the same time. |
2987 | */ |
2988 | if (config->cfi->mbHyperFirst) { |
2989 | /* insert the hypervisor first */ |
2990 | newLine = addLine(new, config->cfi, LT_HYPER, |
2991 | tmplLine->indent, |
2992 | newMBKernel + strlen(prefix)); |
2993 | /* set up for adding the kernel line */ |
2994 | free(tmplLine->indent); |
2995 | tmplLine->indent = strdup(config->secondaryIndent); |
2996 | needs &= ~NEED_MB; |
2997 | } |
2998 | if (needs & NEED_KERNEL) { |
2999 | /* use addLineTmpl to preserve line elements, |
3000 | * otherwise we could just call addLine. Unfortunately |
3001 | * this means making some changes to the template |
3002 | * such as the indent change above and the type |
3003 | * change below. |
3004 | */ |
3005 | struct keywordTypes * mbm_kw = |
3006 | getKeywordByType(LT_MBMODULE, config->cfi); |
3007 | if (mbm_kw) { |
3008 | tmplLine->type = LT_MBMODULE; |
3009 | free(tmplLine->elements[0].item); |
3010 | tmplLine->elements[0].item = strdup(mbm_kw->key); |
3011 | } |
3012 | newLine = addLineTmpl(new, tmplLine, newLine, |
3013 | newKernelPath + strlen(prefix), config->cfi); |
3014 | needs &= ~NEED_KERNEL; |
3015 | } |
3016 | if (needs & NEED_MB) { /* !mbHyperFirst */ |
3017 | newLine = addLine(new, config->cfi, LT_HYPER, |
3018 | config->secondaryIndent, |
3019 | newMBKernel + strlen(prefix)); |
3020 | needs &= ~NEED_MB; |
3021 | } |
3022 | } else if (needs & NEED_KERNEL) { |
3023 | newLine = addLineTmpl(new, tmplLine, newLine, |
3024 | newKernelPath + strlen(prefix), config->cfi); |
3025 | needs &= ~NEED_KERNEL; |
3026 | } |
3027 | |
3028 | } else if (tmplLine->type == LT_HYPER && |
3029 | tmplLine->numElements >= 2) { |
3030 | if (needs & NEED_MB) { |
3031 | newLine = addLineTmpl(new, tmplLine, newLine, |
3032 | newMBKernel + strlen(prefix), config->cfi); |
3033 | needs &= ~NEED_MB; |
3034 | } |
3035 | |
3036 | } else if (tmplLine->type == LT_MBMODULE && |
3037 | tmplLine->numElements >= 2) { |
3038 | if (new->multiboot) { |
3039 | if (needs & NEED_KERNEL) { |
3040 | newLine = addLineTmpl(new, tmplLine, newLine, |
3041 | newKernelPath + |
3042 | strlen(prefix), config->cfi); |
3043 | needs &= ~NEED_KERNEL; |
3044 | } else if (config->cfi->mbInitRdIsModule && |
3045 | (needs & NEED_INITRD)) { |
3046 | char *initrdVal; |
3047 | initrdVal = getInitrdVal(config, prefix, tmplLine, |
3048 | newKernelInitrd, extraInitrds, |
3049 | extraInitrdCount); |
3050 | newLine = addLineTmpl(new, tmplLine, newLine, |
3051 | initrdVal, config->cfi); |
3052 | free(initrdVal); |
3053 | needs &= ~NEED_INITRD; |
3054 | } |
3055 | } else if (needs & NEED_KERNEL) { |
3056 | /* template is multi but new is not, |
3057 | * insert the kernel in the first module slot |
3058 | */ |
3059 | tmplLine->type = LT_KERNEL; |
3060 | free(tmplLine->elements[0].item); |
3061 | tmplLine->elements[0].item = |
3062 | strdup(getKeywordByType(LT_KERNEL, config->cfi)->key); |
3063 | newLine = addLineTmpl(new, tmplLine, newLine, |
3064 | newKernelPath + strlen(prefix), config->cfi); |
3065 | needs &= ~NEED_KERNEL; |
3066 | } else if (needs & NEED_INITRD) { |
3067 | char *initrdVal; |
3068 | /* template is multi but new is not, |
3069 | * insert the initrd in the second module slot |
3070 | */ |
3071 | tmplLine->type = LT_INITRD; |
3072 | free(tmplLine->elements[0].item); |
3073 | tmplLine->elements[0].item = |
3074 | strdup(getKeywordByType(LT_INITRD, config->cfi)->key); |
3075 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3076 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3077 | free(initrdVal); |
3078 | needs &= ~NEED_INITRD; |
3079 | } |
3080 | |
3081 | } else if (tmplLine->type == LT_INITRD && |
3082 | tmplLine->numElements >= 2) { |
3083 | if (needs & NEED_INITRD && |
3084 | new->multiboot && !template->multiboot && |
3085 | config->cfi->mbInitRdIsModule) { |
3086 | /* make sure we don't insert the module initrd |
3087 | * before the module kernel... if we don't do it here, |
3088 | * it will be inserted following the template. |
3089 | */ |
3090 | if (!needs & NEED_KERNEL) { |
3091 | char *initrdVal; |
3092 | |
3093 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3094 | newLine = addLine(new, config->cfi, LT_MBMODULE, |
3095 | config->secondaryIndent, |
3096 | initrdVal); |
3097 | free(initrdVal); |
3098 | needs &= ~NEED_INITRD; |
3099 | } |
3100 | } else if (needs & NEED_INITRD) { |
3101 | char *initrdVal; |
3102 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3103 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3104 | free(initrdVal); |
3105 | needs &= ~NEED_INITRD; |
3106 | } |
3107 | |
3108 | } else if (tmplLine->type == LT_MENUENTRY && |
3109 | (needs & NEED_TITLE)) { |
3110 | requote(tmplLine, config->cfi); |
3111 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3112 | strcpy(nkt, "'"); |
3113 | strcat(nkt, newKernelTitle); |
3114 | strcat(nkt, "'"); |
3115 | newLine = addLineTmpl(new, tmplLine, newLine, nkt, config->cfi); |
3116 | free(nkt); |
3117 | needs &= ~NEED_TITLE; |
3118 | } else if (tmplLine->type == LT_TITLE && |
3119 | (needs & NEED_TITLE)) { |
3120 | if (tmplLine->numElements >= 2) { |
3121 | newLine = addLineTmpl(new, tmplLine, newLine, |
3122 | newKernelTitle, config->cfi); |
3123 | needs &= ~NEED_TITLE; |
3124 | } else if (tmplLine->numElements == 1 && |
3125 | config->cfi->titleBracketed) { |
3126 | /* addLineTmpl doesn't handle titleBracketed */ |
3127 | newLine = addLine(new, config->cfi, LT_TITLE, |
3128 | tmplLine->indent, newKernelTitle); |
3129 | needs &= ~NEED_TITLE; |
3130 | } |
3131 | } else if (tmplLine->type == LT_ECHO) { |
3132 | requote(tmplLine, config->cfi); |
3133 | static const char *prefix = "'Loading "; |
3134 | if (tmplLine->numElements > 1 && |
3135 | strstr(tmplLine->elements[1].item, prefix) && |
3136 | masterLine->next && masterLine->next->type == LT_KERNEL) { |
3137 | char *newTitle = malloc(strlen(prefix) + |
3138 | strlen(newKernelTitle) + 2); |
3139 | |
3140 | strcpy(newTitle, prefix); |
3141 | strcat(newTitle, newKernelTitle); |
3142 | strcat(newTitle, "'"); |
3143 | newLine = addLine(new, config->cfi, LT_ECHO, |
3144 | tmplLine->indent, newTitle); |
3145 | free(newTitle); |
3146 | } else { |
3147 | /* pass through other lines from the template */ |
3148 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, |
3149 | config->cfi); |
3150 | } |
3151 | } else { |
3152 | /* pass through other lines from the template */ |
3153 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); |
3154 | } |
3155 | } |
3156 | |
3157 | } else { |
3158 | /* don't have a template, so start the entry with the |
3159 | * appropriate starting line |
3160 | */ |
3161 | switch (config->cfi->entryStart) { |
3162 | case LT_KERNEL: |
3163 | if (new->multiboot && config->cfi->mbHyperFirst) { |
3164 | /* fall through to LT_HYPER */ |
3165 | } else { |
3166 | newLine = addLine(new, config->cfi, LT_KERNEL, |
3167 | config->primaryIndent, |
3168 | newKernelPath + strlen(prefix)); |
3169 | needs &= ~NEED_KERNEL; |
3170 | break; |
3171 | } |
3172 | |
3173 | case LT_HYPER: |
3174 | newLine = addLine(new, config->cfi, LT_HYPER, |
3175 | config->primaryIndent, |
3176 | newMBKernel + strlen(prefix)); |
3177 | needs &= ~NEED_MB; |
3178 | break; |
3179 | |
3180 | case LT_MENUENTRY: { |
3181 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3182 | strcpy(nkt, "'"); |
3183 | strcat(nkt, newKernelTitle); |
3184 | strcat(nkt, "'"); |
3185 | newLine = addLine(new, config->cfi, LT_MENUENTRY, |
3186 | config->primaryIndent, nkt); |
3187 | free(nkt); |
3188 | needs &= ~NEED_TITLE; |
3189 | needs |= NEED_END; |
3190 | break; |
3191 | } |
3192 | case LT_TITLE: |
3193 | if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above) |
3194 | char * templabel; |
3195 | int x = 0, y = 0; |
3196 | |
3197 | templabel = strdup(newKernelTitle); |
3198 | while( templabel[x]){ |
3199 | if( templabel[x] == ' ' ){ |
3200 | y = x; |
3201 | while( templabel[y] ){ |
3202 | templabel[y] = templabel[y+1]; |
3203 | y++; |
3204 | } |
3205 | } |
3206 | x++; |
3207 | } |
3208 | newLine = addLine(new, config->cfi, LT_TITLE, |
3209 | config->primaryIndent, templabel); |
3210 | free(templabel); |
3211 | }else{ |
3212 | newLine = addLine(new, config->cfi, LT_TITLE, |
3213 | config->primaryIndent, newKernelTitle); |
3214 | } |
3215 | needs &= ~NEED_TITLE; |
3216 | break; |
3217 | |
3218 | default: |
3219 | abort(); |
3220 | } |
3221 | } |
3222 | |
3223 | /* add the remainder of the lines, i.e. those that either |
3224 | * weren't present in the template, or in the case of no template, |
3225 | * all the lines following the entryStart. |
3226 | */ |
3227 | if (needs & NEED_TITLE) { |
3228 | newLine = addLine(new, config->cfi, LT_TITLE, |
3229 | config->secondaryIndent, |
3230 | newKernelTitle); |
3231 | needs &= ~NEED_TITLE; |
3232 | } |
3233 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
3234 | newLine = addLine(new, config->cfi, LT_HYPER, |
3235 | config->secondaryIndent, |
3236 | newMBKernel + strlen(prefix)); |
3237 | needs &= ~NEED_MB; |
3238 | } |
3239 | if (needs & NEED_KERNEL) { |
3240 | newLine = addLine(new, config->cfi, |
3241 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3242 | config->cfi)) ? |
3243 | LT_MBMODULE : LT_KERNEL, |
3244 | config->secondaryIndent, |
3245 | newKernelPath + strlen(prefix)); |
3246 | needs &= ~NEED_KERNEL; |
3247 | } |
3248 | if (needs & NEED_MB) { |
3249 | newLine = addLine(new, config->cfi, LT_HYPER, |
3250 | config->secondaryIndent, |
3251 | newMBKernel + strlen(prefix)); |
3252 | needs &= ~NEED_MB; |
3253 | } |
3254 | if (needs & NEED_INITRD) { |
3255 | char *initrdVal; |
3256 | initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount); |
3257 | newLine = addLine(new, config->cfi, |
3258 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3259 | config->cfi)) ? |
3260 | LT_MBMODULE : LT_INITRD, |
3261 | config->secondaryIndent, |
3262 | initrdVal); |
3263 | free(initrdVal); |
3264 | needs &= ~NEED_INITRD; |
3265 | } |
3266 | if (needs & NEED_END) { |
3267 | newLine = addLine(new, config->cfi, LT_ENTRY_END, |
3268 | config->secondaryIndent, NULL); |
3269 | needs &= ~NEED_END; |
3270 | } |
3271 | |
3272 | if (needs) { |
3273 | printf(_("grubby: needs=%d, aborting\n"), needs); |
3274 | abort(); |
3275 | } |
3276 | |
3277 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, |
3278 | newMBKernelArgs, NULL)) return 1; |
3279 | |
3280 | return 0; |
3281 | } |
3282 | |
3283 | static void traceback(int signum) |
3284 | { |
3285 | void *array[40]; |
3286 | size_t size; |
3287 | |
3288 | signal(SIGSEGV, SIG_DFL); |
3289 | memset(array, '\0', sizeof (array)); |
3290 | size = backtrace(array, 40); |
3291 | |
3292 | fprintf(stderr, "grubby recieved SIGSEGV! Backtrace (%ld):\n", |
3293 | (unsigned long)size); |
3294 | backtrace_symbols_fd(array, size, STDERR_FILENO); |
3295 | exit(1); |
3296 | } |
3297 | |
3298 | int main(int argc, const char ** argv) { |
3299 | poptContext optCon; |
3300 | const char * grubConfig = NULL; |
3301 | char * outputFile = NULL; |
3302 | int arg = 0; |
3303 | int flags = 0; |
3304 | int badImageOkay = 0; |
3305 | int configureGrub2 = 0; |
3306 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
3307 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
3308 | int configureExtLinux = 0; |
3309 | int bootloaderProbe = 0; |
3310 | int extraInitrdCount = 0; |
3311 | char * updateKernelPath = NULL; |
3312 | char * newKernelPath = NULL; |
3313 | char * removeKernelPath = NULL; |
3314 | char * newKernelArgs = NULL; |
3315 | char * newKernelInitrd = NULL; |
3316 | char * newKernelTitle = NULL; |
3317 | char * newKernelVersion = NULL; |
3318 | char * newMBKernel = NULL; |
3319 | char * newMBKernelArgs = NULL; |
3320 | char * removeMBKernelArgs = NULL; |
3321 | char * removeMBKernel = NULL; |
3322 | char * bootPrefix = NULL; |
3323 | char * defaultKernel = NULL; |
3324 | char * removeArgs = NULL; |
3325 | char * kernelInfo = NULL; |
3326 | char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
3327 | const char * chptr = NULL; |
3328 | struct configFileInfo * cfi = NULL; |
3329 | struct grubConfig * config; |
3330 | struct singleEntry * template = NULL; |
3331 | int copyDefault = 0, makeDefault = 0; |
3332 | int displayDefault = 0; |
3333 | int displayDefaultIndex = 0; |
3334 | int displayDefaultTitle = 0; |
3335 | struct poptOption options[] = { |
3336 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
3337 | _("add an entry for the specified kernel"), _("kernel-path") }, |
3338 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
3339 | _("add an entry for the specified multiboot kernel"), NULL }, |
3340 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
3341 | _("default arguments for the new kernel or new arguments for " |
3342 | "kernel being updated"), _("args") }, |
3343 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
3344 | _("default arguments for the new multiboot kernel or " |
3345 | "new arguments for multiboot kernel being updated"), NULL }, |
3346 | { "bad-image-okay", 0, 0, &badImageOkay, 0, |
3347 | _("don't sanity check images in boot entries (for testing only)"), |
3348 | NULL }, |
3349 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
3350 | _("filestystem which contains /boot directory (for testing only)"), |
3351 | _("bootfs") }, |
3352 | #if defined(__i386__) || defined(__x86_64__) |
3353 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
3354 | _("check if lilo is installed on lilo.conf boot sector") }, |
3355 | #endif |
3356 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
3357 | _("path to grub config file to update (\"-\" for stdin)"), |
3358 | _("path") }, |
3359 | { "copy-default", 0, 0, ©Default, 0, |
3360 | _("use the default boot entry as a template for the new entry " |
3361 | "being added; if the default is not a linux image, or if " |
3362 | "the kernel referenced by the default image does not exist, " |
3363 | "the first linux entry whose kernel does exist is used as the " |
3364 | "template"), NULL }, |
3365 | { "debug", 0, 0, &debug, 0, |
3366 | _("print debugging information for failures") }, |
3367 | { "default-kernel", 0, 0, &displayDefault, 0, |
3368 | _("display the path of the default kernel") }, |
3369 | { "default-index", 0, 0, &displayDefaultIndex, 0, |
3370 | _("display the index of the default kernel") }, |
3371 | { "default-title", 0, 0, &displayDefaultTitle, 0, |
3372 | _("display the title of the default kernel") }, |
3373 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
3374 | _("configure elilo bootloader") }, |
3375 | { "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
3376 | _("configure extlinux bootloader (from syslinux)") }, |
3377 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
3378 | _("configure grub bootloader") }, |
3379 | { "grub2", 0, POPT_ARG_NONE, &configureGrub2, 0, |
3380 | _("configure grub2 bootloader") }, |
3381 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
3382 | _("display boot information for specified kernel"), |
3383 | _("kernel-path") }, |
3384 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
3385 | _("initrd image for the new kernel"), _("initrd-path") }, |
3386 | { "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
3387 | _("auxilliary initrd image for things other than the new kernel"), _("initrd-path") }, |
3388 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
3389 | _("configure lilo bootloader") }, |
3390 | { "make-default", 0, 0, &makeDefault, 0, |
3391 | _("make the newly added entry the default boot entry"), NULL }, |
3392 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
3393 | _("path to output updated config file (\"-\" for stdout)"), |
3394 | _("path") }, |
3395 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
3396 | _("remove kernel arguments"), NULL }, |
3397 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
3398 | _("remove multiboot kernel arguments"), NULL }, |
3399 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
3400 | _("remove all entries for the specified kernel"), |
3401 | _("kernel-path") }, |
3402 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
3403 | _("remove all entries for the specified multiboot kernel"), NULL }, |
3404 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
3405 | _("make the first entry referencing the specified kernel " |
3406 | "the default"), _("kernel-path") }, |
3407 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
3408 | _("configure silo bootloader") }, |
3409 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
3410 | _("title to use for the new kernel entry"), _("entry-title") }, |
3411 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
3412 | _("updated information for the specified kernel"), |
3413 | _("kernel-path") }, |
3414 | { "version", 'v', 0, NULL, 'v', |
3415 | _("print the version of this program and exit"), NULL }, |
3416 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
3417 | _("configure yaboot bootloader") }, |
3418 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
3419 | _("configure zipl bootloader") }, |
3420 | POPT_AUTOHELP |
3421 | { 0, 0, 0, 0, 0 } |
3422 | }; |
3423 | |
3424 | useextlinuxmenu=0; |
3425 | |
3426 | signal(SIGSEGV, traceback); |
3427 | |
3428 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
3429 | poptReadDefaultConfig(optCon, 1); |
3430 | |
3431 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
3432 | switch (arg) { |
3433 | case 'v': |
3434 | printf("grubby version %s\n", VERSION); |
3435 | exit(0); |
3436 | break; |
3437 | case 'i': |
3438 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { |
3439 | extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon)); |
3440 | } else { |
3441 | fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount); |
3442 | return 1; |
3443 | } |
3444 | break; |
3445 | } |
3446 | } |
3447 | |
3448 | if (arg < -1) { |
3449 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
3450 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
3451 | poptStrerror(arg)); |
3452 | return 1; |
3453 | } |
3454 | |
3455 | if ((chptr = poptGetArg(optCon))) { |
3456 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
3457 | return 1; |
3458 | } |
3459 | |
3460 | if ((configureLilo + configureGrub2 + configureGrub + configureELilo + |
3461 | configureYaboot + configureSilo + configureZipl + |
3462 | configureExtLinux ) > 1) { |
3463 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); |
3464 | return 1; |
3465 | } else if (bootloaderProbe && grubConfig) { |
3466 | fprintf(stderr, |
3467 | _("grubby: cannot specify config file with --bootloader-probe\n")); |
3468 | return 1; |
3469 | } else if (configureGrub2) { |
3470 | cfi = &grub2ConfigType; |
3471 | } else if (configureLilo) { |
3472 | cfi = &liloConfigType; |
3473 | } else if (configureGrub) { |
3474 | cfi = &grubConfigType; |
3475 | } else if (configureELilo) { |
3476 | cfi = &eliloConfigType; |
3477 | } else if (configureYaboot) { |
3478 | cfi = &yabootConfigType; |
3479 | } else if (configureSilo) { |
3480 | cfi = &siloConfigType; |
3481 | } else if (configureZipl) { |
3482 | cfi = &ziplConfigType; |
3483 | } else if (configureExtLinux) { |
3484 | cfi = &extlinuxConfigType; |
3485 | useextlinuxmenu=1; |
3486 | } |
3487 | |
3488 | if (!cfi) { |
3489 | #ifdef __ia64__ |
3490 | cfi = &eliloConfigType; |
3491 | #elif __powerpc__ |
3492 | cfi = &yabootConfigType; |
3493 | #elif __sparc__ |
3494 | cfi = &siloConfigType; |
3495 | #elif __s390__ |
3496 | cfi = &ziplConfigType; |
3497 | #elif __s390x__ |
3498 | cfi = &ziplConfigtype; |
3499 | #else |
3500 | if (grub2FindConfig(&grub2ConfigType)) |
3501 | cfi = &grub2ConfigType; |
3502 | else |
3503 | cfi = &grubConfigType; |
3504 | #endif |
3505 | } |
3506 | |
3507 | if (!grubConfig) { |
3508 | if (cfi->findConfig) |
3509 | grubConfig = cfi->findConfig(cfi); |
3510 | if (!grubConfig) |
3511 | grubConfig = cfi->defaultConfig; |
3512 | } |
3513 | |
3514 | if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion || |
3515 | newKernelPath || removeKernelPath || makeDefault || |
3516 | defaultKernel || displayDefaultIndex || displayDefaultTitle)) { |
3517 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " |
3518 | "specified option")); |
3519 | return 1; |
3520 | } |
3521 | |
3522 | if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath || |
3523 | removeKernelPath)) { |
3524 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
3525 | "be used when adding or removing kernels\n")); |
3526 | return 1; |
3527 | } |
3528 | |
3529 | if (newKernelPath && !newKernelTitle) { |
3530 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
3531 | return 1; |
3532 | } else if (!newKernelPath && (newKernelTitle || copyDefault || |
3533 | (newKernelInitrd && !updateKernelPath)|| |
3534 | makeDefault || extraInitrdCount > 0)) { |
3535 | fprintf(stderr, _("grubby: kernel path expected\n")); |
3536 | return 1; |
3537 | } |
3538 | |
3539 | if (newKernelPath && updateKernelPath) { |
3540 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
3541 | "not be used together")); |
3542 | return 1; |
3543 | } |
3544 | |
3545 | if (makeDefault && defaultKernel) { |
3546 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
3547 | "may not be used together\n")); |
3548 | return 1; |
3549 | } else if (defaultKernel && removeKernelPath && |
3550 | !strcmp(defaultKernel, removeKernelPath)) { |
3551 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); |
3552 | return 1; |
3553 | } else if (defaultKernel && newKernelPath && |
3554 | !strcmp(defaultKernel, newKernelPath)) { |
3555 | makeDefault = 1; |
3556 | defaultKernel = NULL; |
3557 | } |
3558 | |
3559 | if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) { |
3560 | fprintf(stderr, _("grubby: output file must be specified if stdin " |
3561 | "is used\n")); |
3562 | return 1; |
3563 | } |
3564 | |
3565 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel |
3566 | && !kernelInfo && !bootloaderProbe && !updateKernelPath |
3567 | && !removeMBKernel && !displayDefaultIndex && !displayDefaultTitle) { |
3568 | fprintf(stderr, _("grubby: no action specified\n")); |
3569 | return 1; |
3570 | } |
3571 | |
3572 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
3573 | |
3574 | if (cfi->needsBootPrefix) { |
3575 | if (!bootPrefix) { |
3576 | bootPrefix = findBootPrefix(); |
3577 | if (!bootPrefix) return 1; |
3578 | } else { |
3579 | /* this shouldn't end with a / */ |
3580 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
3581 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
3582 | } |
3583 | } else { |
3584 | bootPrefix = ""; |
3585 | } |
3586 | |
3587 | if (!cfi->mbAllowExtraInitRds && |
3588 | extraInitrdCount > 0) { |
3589 | fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig); |
3590 | return 1; |
3591 | } |
3592 | |
3593 | if (bootloaderProbe) { |
3594 | int lrc = 0, grc = 0, gr2c = 0, erc = 0; |
3595 | struct grubConfig * lconfig, * gconfig; |
3596 | |
3597 | const char *grub2config = grub2FindConfig(&grub2ConfigType); |
3598 | if (grub2config) { |
3599 | gconfig = readConfig(grub2config, &grub2ConfigType); |
3600 | if (!gconfig) |
3601 | gr2c = 1; |
3602 | else |
3603 | gr2c = checkForGrub2(gconfig); |
3604 | } |
3605 | |
3606 | const char *grubconfig = grubFindConfig(&grubConfigType); |
3607 | if (!access(grubconfig, F_OK)) { |
3608 | gconfig = readConfig(grubconfig, &grubConfigType); |
3609 | if (!gconfig) |
3610 | grc = 1; |
3611 | else |
3612 | grc = checkForGrub(gconfig); |
3613 | } |
3614 | |
3615 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
3616 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); |
3617 | if (!lconfig) |
3618 | lrc = 1; |
3619 | else |
3620 | lrc = checkForLilo(lconfig); |
3621 | } |
3622 | |
3623 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
3624 | lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType); |
3625 | if (!lconfig) |
3626 | erc = 1; |
3627 | else |
3628 | erc = checkForExtLinux(lconfig); |
3629 | } |
3630 | |
3631 | if (lrc == 1 || grc == 1 || gr2c == 1) return 1; |
3632 | |
3633 | if (lrc == 2) printf("lilo\n"); |
3634 | if (gr2c == 2) printf("grub2\n"); |
3635 | if (grc == 2) printf("grub\n"); |
3636 | if (erc == 2) printf("extlinux\n"); |
3637 | |
3638 | return 0; |
3639 | } |
3640 | |
3641 | config = readConfig(grubConfig, cfi); |
3642 | if (!config) return 1; |
3643 | |
3644 | if (displayDefault) { |
3645 | struct singleLine * line; |
3646 | struct singleEntry * entry; |
3647 | char * rootspec; |
3648 | |
3649 | if (config->defaultImage == -1) return 0; |
3650 | entry = findEntryByIndex(config, config->defaultImage); |
3651 | if (!entry) return 0; |
3652 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; |
3653 | |
3654 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
3655 | if (!line) return 0; |
3656 | |
3657 | rootspec = getRootSpecifier(line->elements[1].item); |
3658 | printf("%s%s\n", bootPrefix, line->elements[1].item + |
3659 | ((rootspec != NULL) ? strlen(rootspec) : 0)); |
3660 | |
3661 | return 0; |
3662 | |
3663 | } else if (displayDefaultTitle) { |
3664 | struct singleLine * line; |
3665 | struct singleEntry * entry; |
3666 | |
3667 | if (config->defaultImage == -1) return 0; |
3668 | entry = findEntryByIndex(config, config->defaultImage); |
3669 | if (!entry) return 0; |
3670 | |
3671 | if (!configureGrub2) { |
3672 | line = getLineByType(LT_TITLE, entry->lines); |
3673 | if (!line) return 0; |
3674 | printf("%s\n", line->elements[1].item); |
3675 | |
3676 | } else { |
3677 | char * title; |
3678 | |
3679 | dbgPrintf("This is GRUB2, default title is embeded in menuentry\n"); |
3680 | line = getLineByType(LT_MENUENTRY, entry->lines); |
3681 | if (!line) return 0; |
3682 | title = grub2ExtractTitle(line); |
3683 | if (title) |
3684 | printf("%s\n", title); |
3685 | } |
3686 | return 0; |
3687 | |
3688 | } else if (displayDefaultIndex) { |
3689 | if (config->defaultImage == -1) return 0; |
3690 | printf("%i\n", config->defaultImage); |
3691 | |
3692 | } else if (kernelInfo) |
3693 | return displayInfo(config, kernelInfo, bootPrefix); |
3694 | |
3695 | if (copyDefault) { |
3696 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
3697 | if (!template) return 1; |
3698 | } |
3699 | |
3700 | markRemovedImage(config, removeKernelPath, bootPrefix); |
3701 | markRemovedImage(config, removeMBKernel, bootPrefix); |
3702 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, |
3703 | bootPrefix, flags); |
3704 | setFallbackImage(config, newKernelPath != NULL); |
3705 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
3706 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; |
3707 | if (updateKernelPath && newKernelInitrd) { |
3708 | if (updateInitrd(config, updateKernelPath, bootPrefix, |
3709 | newKernelInitrd)) return 1; |
3710 | } |
3711 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
3712 | newKernelTitle, newKernelArgs, newKernelInitrd, |
3713 | extraInitrds, extraInitrdCount, |
3714 | newMBKernel, newMBKernelArgs)) return 1; |
3715 | |
3716 | |
3717 | if (numEntries(config) == 0) { |
3718 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " |
3719 | "Not writing out new config.\n")); |
3720 | return 1; |
3721 | } |
3722 | |
3723 | if (!outputFile) |
3724 | outputFile = (char *)grubConfig; |
3725 | |
3726 | return writeConfig(config, outputFile, bootPrefix); |
3727 | } |