Contents of /trunk/grubby/grubby.c
Parent Directory | Revision Log
Revision 1854 -
(show annotations)
(download)
Mon Jul 2 13:12:32 2012 UTC (12 years, 2 months ago) by niro
File MIME type: text/plain
File size: 115977 byte(s)
Mon Jul 2 13:12:32 2012 UTC (12 years, 2 months ago) by niro
File MIME type: text/plain
File size: 115977 byte(s)
ia64/elilo: add support for probing the currently installed bootloader
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 | "/boot/grub/grub.conf", |
168 | "/boot/grub/menu.lst", |
169 | "/etc/grub.conf", |
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 count = 0; |
247 | |
248 | for (int i = 0; i < line->numElements; i++) { |
249 | int indentSize = 0; |
250 | |
251 | count = count + strlen(line->elements[i].item); |
252 | |
253 | indentSize = strlen(line->elements[i].indent); |
254 | if (indentSize > 0) |
255 | count = count + indentSize; |
256 | else |
257 | /* be extra safe and add room for whitespaces */ |
258 | count = count + 1; |
259 | } |
260 | |
261 | /* room for trailing terminator */ |
262 | count = count + 1; |
263 | |
264 | return count; |
265 | } |
266 | |
267 | static int isquote(char q) |
268 | { |
269 | if (q == '\'' || q == '\"') |
270 | return 1; |
271 | return 0; |
272 | } |
273 | |
274 | char *grub2ExtractTitle(struct singleLine * line) { |
275 | char * current; |
276 | char * current_indent; |
277 | int current_len; |
278 | int current_indent_len; |
279 | int i; |
280 | |
281 | /* bail out if line does not start with menuentry */ |
282 | if (strcmp(line->elements[0].item, "menuentry")) |
283 | return NULL; |
284 | |
285 | i = 1; |
286 | current = line->elements[i].item; |
287 | current_len = strlen(current); |
288 | |
289 | /* if second word is quoted, strip the quotes and return single word */ |
290 | if (isquote(*current) && isquote(current[current_len - 1])) { |
291 | char *tmp; |
292 | |
293 | tmp = strdup(current); |
294 | *(tmp + current_len - 1) = '\0'; |
295 | return ++tmp; |
296 | } |
297 | |
298 | /* if no quotes, return second word verbatim */ |
299 | if (!isquote(*current)) |
300 | return current; |
301 | |
302 | /* second element start with a quote, so we have to find the element |
303 | * whose last character is also quote (assuming it's the closing one) */ |
304 | int resultMaxSize; |
305 | char * result; |
306 | |
307 | resultMaxSize = sizeOfSingleLine(line); |
308 | result = malloc(resultMaxSize); |
309 | snprintf(result, resultMaxSize, "%s", ++current); |
310 | |
311 | i++; |
312 | for (; i < line->numElements; ++i) { |
313 | current = line->elements[i].item; |
314 | current_len = strlen(current); |
315 | current_indent = line->elements[i].indent; |
316 | current_indent_len = strlen(current_indent); |
317 | |
318 | strncat(result, current_indent, current_indent_len); |
319 | if (!isquote(current[current_len-1])) { |
320 | strncat(result, current, current_len); |
321 | } else { |
322 | strncat(result, current, current_len - 1); |
323 | break; |
324 | } |
325 | } |
326 | return result; |
327 | } |
328 | |
329 | struct configFileInfo grub2ConfigType = { |
330 | .findConfig = grub2FindConfig, |
331 | .keywords = grub2Keywords, |
332 | .defaultIsIndex = 1, |
333 | .defaultSupportSaved = 1, |
334 | .defaultIsVariable = 1, |
335 | .entryStart = LT_MENUENTRY, |
336 | .entryEnd = LT_ENTRY_END, |
337 | .titlePosition = 1, |
338 | .needsBootPrefix = 1, |
339 | .mbHyperFirst = 1, |
340 | .mbInitRdIsModule = 1, |
341 | .mbAllowExtraInitRds = 1, |
342 | }; |
343 | |
344 | struct keywordTypes yabootKeywords[] = { |
345 | { "label", LT_TITLE, '=' }, |
346 | { "root", LT_ROOT, '=' }, |
347 | { "default", LT_DEFAULT, '=' }, |
348 | { "image", LT_KERNEL, '=' }, |
349 | { "bsd", LT_GENERIC, '=' }, |
350 | { "macos", LT_GENERIC, '=' }, |
351 | { "macosx", LT_GENERIC, '=' }, |
352 | { "magicboot", LT_GENERIC, '=' }, |
353 | { "darwin", LT_GENERIC, '=' }, |
354 | { "timeout", LT_GENERIC, '=' }, |
355 | { "install", LT_GENERIC, '=' }, |
356 | { "fstype", LT_GENERIC, '=' }, |
357 | { "hfstype", LT_GENERIC, '=' }, |
358 | { "delay", LT_GENERIC, '=' }, |
359 | { "defaultos", LT_GENERIC, '=' }, |
360 | { "init-message", LT_GENERIC, '=' }, |
361 | { "enablecdboot", LT_GENERIC, ' ' }, |
362 | { "enableofboot", LT_GENERIC, ' ' }, |
363 | { "enablenetboot", LT_GENERIC, ' ' }, |
364 | { "nonvram", LT_GENERIC, ' ' }, |
365 | { "hide", LT_GENERIC, ' ' }, |
366 | { "protect", LT_GENERIC, ' ' }, |
367 | { "nobless", LT_GENERIC, ' ' }, |
368 | { "nonvram", LT_GENERIC, ' ' }, |
369 | { "brokenosx", LT_GENERIC, ' ' }, |
370 | { "usemount", LT_GENERIC, ' ' }, |
371 | { "mntpoint", LT_GENERIC, '=' }, |
372 | { "partition", LT_GENERIC, '=' }, |
373 | { "device", LT_GENERIC, '=' }, |
374 | { "fstype", LT_GENERIC, '=' }, |
375 | { "initrd", LT_INITRD, '=', ';' }, |
376 | { "append", LT_KERNELARGS, '=' }, |
377 | { "boot", LT_BOOT, '=' }, |
378 | { "lba", LT_LBA, ' ' }, |
379 | { NULL, 0, 0 }, |
380 | }; |
381 | |
382 | struct keywordTypes liloKeywords[] = { |
383 | { "label", LT_TITLE, '=' }, |
384 | { "root", LT_ROOT, '=' }, |
385 | { "default", LT_DEFAULT, '=' }, |
386 | { "image", LT_KERNEL, '=' }, |
387 | { "other", LT_OTHER, '=' }, |
388 | { "initrd", LT_INITRD, '=' }, |
389 | { "append", LT_KERNELARGS, '=' }, |
390 | { "boot", LT_BOOT, '=' }, |
391 | { "lba", LT_LBA, ' ' }, |
392 | { NULL, 0, 0 }, |
393 | }; |
394 | |
395 | struct keywordTypes eliloKeywords[] = { |
396 | { "label", LT_TITLE, '=' }, |
397 | { "root", LT_ROOT, '=' }, |
398 | { "default", LT_DEFAULT, '=' }, |
399 | { "image", LT_KERNEL, '=' }, |
400 | { "initrd", LT_INITRD, '=' }, |
401 | { "append", LT_KERNELARGS, '=' }, |
402 | { "vmm", LT_HYPER, '=' }, |
403 | { NULL, 0, 0 }, |
404 | }; |
405 | |
406 | struct keywordTypes siloKeywords[] = { |
407 | { "label", LT_TITLE, '=' }, |
408 | { "root", LT_ROOT, '=' }, |
409 | { "default", LT_DEFAULT, '=' }, |
410 | { "image", LT_KERNEL, '=' }, |
411 | { "other", LT_OTHER, '=' }, |
412 | { "initrd", LT_INITRD, '=' }, |
413 | { "append", LT_KERNELARGS, '=' }, |
414 | { "boot", LT_BOOT, '=' }, |
415 | { NULL, 0, 0 }, |
416 | }; |
417 | |
418 | struct keywordTypes ziplKeywords[] = { |
419 | { "target", LT_BOOTROOT, '=' }, |
420 | { "image", LT_KERNEL, '=' }, |
421 | { "ramdisk", LT_INITRD, '=' }, |
422 | { "parameters", LT_KERNELARGS, '=' }, |
423 | { "default", LT_DEFAULT, '=' }, |
424 | { NULL, 0, 0 }, |
425 | }; |
426 | |
427 | struct keywordTypes extlinuxKeywords[] = { |
428 | { "label", LT_TITLE, ' ' }, |
429 | { "root", LT_ROOT, ' ' }, |
430 | { "default", LT_DEFAULT, ' ' }, |
431 | { "kernel", LT_KERNEL, ' ' }, |
432 | { "initrd", LT_INITRD, ' ', ',' }, |
433 | { "append", LT_KERNELARGS, ' ' }, |
434 | { "prompt", LT_UNKNOWN, ' ' }, |
435 | { NULL, 0, 0 }, |
436 | }; |
437 | int useextlinuxmenu; |
438 | struct configFileInfo eliloConfigType = { |
439 | .defaultConfig = "/boot/efi/EFI/redhat/elilo.conf", |
440 | .keywords = eliloKeywords, |
441 | .entryStart = LT_KERNEL, |
442 | .needsBootPrefix = 1, |
443 | .argsInQuotes = 1, |
444 | .mbConcatArgs = 1, |
445 | }; |
446 | |
447 | struct configFileInfo liloConfigType = { |
448 | .defaultConfig = "/etc/lilo.conf", |
449 | .keywords = liloKeywords, |
450 | .entryStart = LT_KERNEL, |
451 | .argsInQuotes = 1, |
452 | .maxTitleLength = 15, |
453 | }; |
454 | |
455 | struct configFileInfo yabootConfigType = { |
456 | .defaultConfig = "/etc/yaboot.conf", |
457 | .keywords = yabootKeywords, |
458 | .entryStart = LT_KERNEL, |
459 | .needsBootPrefix = 1, |
460 | .argsInQuotes = 1, |
461 | .maxTitleLength = 15, |
462 | .mbAllowExtraInitRds = 1, |
463 | }; |
464 | |
465 | struct configFileInfo siloConfigType = { |
466 | .defaultConfig = "/etc/silo.conf", |
467 | .keywords = siloKeywords, |
468 | .entryStart = LT_KERNEL, |
469 | .needsBootPrefix = 1, |
470 | .argsInQuotes = 1, |
471 | .maxTitleLength = 15, |
472 | }; |
473 | |
474 | struct configFileInfo ziplConfigType = { |
475 | .defaultConfig = "/etc/zipl.conf", |
476 | .keywords = ziplKeywords, |
477 | .entryStart = LT_TITLE, |
478 | .argsInQuotes = 1, |
479 | .titleBracketed = 1, |
480 | }; |
481 | |
482 | struct configFileInfo extlinuxConfigType = { |
483 | .defaultConfig = "/boot/extlinux/extlinux.conf", |
484 | .keywords = extlinuxKeywords, |
485 | .entryStart = LT_TITLE, |
486 | .needsBootPrefix = 1, |
487 | .maxTitleLength = 255, |
488 | .mbAllowExtraInitRds = 1, |
489 | }; |
490 | |
491 | struct grubConfig { |
492 | struct singleLine * theLines; |
493 | struct singleEntry * entries; |
494 | char * primaryIndent; |
495 | char * secondaryIndent; |
496 | int defaultImage; /* -1 if none specified -- this value is |
497 | * written out, overriding original */ |
498 | int fallbackImage; /* just like defaultImage */ |
499 | int flags; |
500 | struct configFileInfo * cfi; |
501 | }; |
502 | |
503 | blkid_cache blkid; |
504 | |
505 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); |
506 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, |
507 | const char * path, const char * prefix, |
508 | int * index); |
509 | static int readFile(int fd, char ** bufPtr); |
510 | static void lineInit(struct singleLine * line); |
511 | struct singleLine * lineDup(struct singleLine * line); |
512 | static void lineFree(struct singleLine * line); |
513 | static int lineWrite(FILE * out, struct singleLine * line, |
514 | struct configFileInfo * cfi); |
515 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
516 | struct configFileInfo * cfi); |
517 | static char * getRootSpecifier(char * str); |
518 | static void requote(struct singleLine *line, struct configFileInfo * cfi); |
519 | static void insertElement(struct singleLine * line, |
520 | const char * item, int insertHere, |
521 | struct configFileInfo * cfi); |
522 | static void removeElement(struct singleLine * line, int removeHere); |
523 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
524 | struct configFileInfo * cfi); |
525 | static enum lineType_e getTypeByKeyword(char * keyword, |
526 | struct configFileInfo * cfi); |
527 | static struct singleLine * getLineByType(enum lineType_e type, |
528 | struct singleLine * line); |
529 | static int checkForExtLinux(struct grubConfig * config); |
530 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
531 | struct singleLine * tmplLine, |
532 | struct singleLine * prevLine, |
533 | const char * val, |
534 | struct configFileInfo * cfi); |
535 | struct singleLine * addLine(struct singleEntry * entry, |
536 | struct configFileInfo * cfi, |
537 | enum lineType_e type, char * defaultIndent, |
538 | const char * val); |
539 | |
540 | static char * sdupprintf(const char *format, ...) |
541 | #ifdef __GNUC__ |
542 | __attribute__ ((format (printf, 1, 2))); |
543 | #else |
544 | ; |
545 | #endif |
546 | |
547 | static char * sdupprintf(const char *format, ...) { |
548 | char *buf = NULL; |
549 | char c; |
550 | va_list args; |
551 | size_t size = 0; |
552 | va_start(args, format); |
553 | |
554 | /* XXX requires C99 vsnprintf behavior */ |
555 | size = vsnprintf(&c, 1, format, args) + 1; |
556 | if (size == -1) { |
557 | printf("ERROR: vsnprintf behavior is not C99\n"); |
558 | abort(); |
559 | } |
560 | |
561 | va_end(args); |
562 | va_start(args, format); |
563 | |
564 | buf = malloc(size); |
565 | if (buf == NULL) |
566 | return NULL; |
567 | vsnprintf(buf, size, format, args); |
568 | va_end (args); |
569 | |
570 | return buf; |
571 | } |
572 | |
573 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
574 | struct configFileInfo * cfi) { |
575 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
576 | if (kw->type == type) |
577 | return kw; |
578 | } |
579 | return NULL; |
580 | } |
581 | |
582 | static char *getKeyByType(enum lineType_e type, struct configFileInfo * cfi) { |
583 | struct keywordTypes *kt = getKeywordByType(type, cfi); |
584 | if (kt) |
585 | return kt->key; |
586 | return "unknown"; |
587 | } |
588 | |
589 | static char * getpathbyspec(char *device) { |
590 | if (!blkid) |
591 | blkid_get_cache(&blkid, NULL); |
592 | |
593 | return blkid_get_devname(blkid, device, NULL); |
594 | } |
595 | |
596 | static char * getuuidbydev(char *device) { |
597 | if (!blkid) |
598 | blkid_get_cache(&blkid, NULL); |
599 | |
600 | return blkid_get_tag_value(blkid, "UUID", device); |
601 | } |
602 | |
603 | static enum lineType_e getTypeByKeyword(char * keyword, |
604 | struct configFileInfo * cfi) { |
605 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
606 | if (!strcmp(keyword, kw->key)) |
607 | return kw->type; |
608 | } |
609 | return LT_UNKNOWN; |
610 | } |
611 | |
612 | static struct singleLine * getLineByType(enum lineType_e type, |
613 | struct singleLine * line) { |
614 | dbgPrintf("getLineByType(%d): ", type); |
615 | for (; line; line = line->next) { |
616 | dbgPrintf("%d:%s ", line->type, |
617 | line->numElements ? line->elements[0].item : "(empty)"); |
618 | if (line->type & type) break; |
619 | } |
620 | dbgPrintf(line ? "\n" : " (failed)\n"); |
621 | return line; |
622 | } |
623 | |
624 | static int isBracketedTitle(struct singleLine * line) { |
625 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
626 | int len = strlen(line->elements[0].item); |
627 | if (*(line->elements[0].item + len - 1) == ']') { |
628 | /* FIXME: this is a hack... */ |
629 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
630 | return 1; |
631 | } |
632 | } |
633 | } |
634 | return 0; |
635 | } |
636 | |
637 | static int isEntryStart(struct singleLine * line, |
638 | struct configFileInfo * cfi) { |
639 | return line->type == cfi->entryStart || line->type == LT_OTHER || |
640 | (cfi->titleBracketed && isBracketedTitle(line)); |
641 | } |
642 | |
643 | /* extract the title from within brackets (for zipl) */ |
644 | static char * extractTitle(struct singleLine * line) { |
645 | /* bracketed title... let's extract it (leaks a byte) */ |
646 | char * title; |
647 | title = strdup(line->elements[0].item); |
648 | title++; |
649 | *(title + strlen(title) - 1) = '\0'; |
650 | return title; |
651 | } |
652 | |
653 | static int readFile(int fd, char ** bufPtr) { |
654 | int alloced = 0, size = 0, i = 0; |
655 | char * buf = NULL; |
656 | |
657 | do { |
658 | size += i; |
659 | if ((size + 1024) > alloced) { |
660 | alloced += 4096; |
661 | buf = realloc(buf, alloced + 1); |
662 | } |
663 | } while ((i = read(fd, buf + size, 1024)) > 0); |
664 | |
665 | if (i < 0) { |
666 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); |
667 | free(buf); |
668 | return 1; |
669 | } |
670 | |
671 | buf = realloc(buf, size + 2); |
672 | if (size == 0) |
673 | buf[size++] = '\n'; |
674 | else |
675 | if (buf[size - 1] != '\n') |
676 | buf[size++] = '\n'; |
677 | buf[size] = '\0'; |
678 | |
679 | *bufPtr = buf; |
680 | |
681 | return 0; |
682 | } |
683 | |
684 | static void lineInit(struct singleLine * line) { |
685 | line->indent = NULL; |
686 | line->elements = NULL; |
687 | line->numElements = 0; |
688 | line->next = NULL; |
689 | } |
690 | |
691 | struct singleLine * lineDup(struct singleLine * line) { |
692 | struct singleLine * newLine = malloc(sizeof(*newLine)); |
693 | |
694 | newLine->indent = strdup(line->indent); |
695 | newLine->next = NULL; |
696 | newLine->type = line->type; |
697 | newLine->numElements = line->numElements; |
698 | newLine->elements = malloc(sizeof(*newLine->elements) * |
699 | newLine->numElements); |
700 | |
701 | for (int i = 0; i < newLine->numElements; i++) { |
702 | newLine->elements[i].indent = strdup(line->elements[i].indent); |
703 | newLine->elements[i].item = strdup(line->elements[i].item); |
704 | } |
705 | |
706 | return newLine; |
707 | } |
708 | |
709 | static void lineFree(struct singleLine * line) { |
710 | if (line->indent) free(line->indent); |
711 | |
712 | for (int i = 0; i < line->numElements; i++) { |
713 | free(line->elements[i].item); |
714 | free(line->elements[i].indent); |
715 | } |
716 | |
717 | if (line->elements) free(line->elements); |
718 | lineInit(line); |
719 | } |
720 | |
721 | static int lineWrite(FILE * out, struct singleLine * line, |
722 | struct configFileInfo * cfi) { |
723 | if (fprintf(out, "%s", line->indent) == -1) return -1; |
724 | |
725 | for (int i = 0; i < line->numElements; i++) { |
726 | /* Need to handle this, because we strip the quotes from |
727 | * menuentry when read it. */ |
728 | if (line->type == LT_MENUENTRY && i == 1) { |
729 | if(!isquote(*line->elements[i].item)) |
730 | fprintf(out, "\'%s\'", line->elements[i].item); |
731 | else |
732 | fprintf(out, "%s", line->elements[i].item); |
733 | fprintf(out, "%s", line->elements[i].indent); |
734 | |
735 | continue; |
736 | } |
737 | |
738 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
739 | if (fputc('"', out) == EOF) return -1; |
740 | |
741 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; |
742 | if (i < line->numElements - 1) |
743 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; |
744 | } |
745 | |
746 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
747 | if (fputc('"', out) == EOF) return -1; |
748 | |
749 | if (fprintf(out, "\n") == -1) return -1; |
750 | |
751 | return 0; |
752 | } |
753 | |
754 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
755 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
756 | struct configFileInfo * cfi) { |
757 | char * end; |
758 | char * start = *bufPtr; |
759 | char * chptr; |
760 | int elementsAlloced = 0; |
761 | struct lineElement * element; |
762 | int first = 1; |
763 | |
764 | lineFree(line); |
765 | |
766 | end = strchr(start, '\n'); |
767 | *end = '\0'; |
768 | *bufPtr = end + 1; |
769 | |
770 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
771 | |
772 | line->indent = strndup(start, chptr - start); |
773 | start = chptr; |
774 | |
775 | while (start < end) { |
776 | /* we know !isspace(*start) */ |
777 | |
778 | if (elementsAlloced == line->numElements) { |
779 | elementsAlloced += 5; |
780 | line->elements = realloc(line->elements, |
781 | sizeof(*line->elements) * elementsAlloced); |
782 | } |
783 | |
784 | element = line->elements + line->numElements; |
785 | |
786 | chptr = start; |
787 | while (*chptr && !isspace(*chptr)) { |
788 | if (first && *chptr == '=') break; |
789 | chptr++; |
790 | } |
791 | element->item = strndup(start, chptr - start); |
792 | start = chptr; |
793 | |
794 | /* lilo actually accepts the pathological case of append = " foo " */ |
795 | if (*start == '=') |
796 | chptr = start + 1; |
797 | else |
798 | chptr = start; |
799 | |
800 | do { |
801 | for (; *chptr && isspace(*chptr); chptr++); |
802 | if (*chptr == '=') |
803 | chptr = chptr + 1; |
804 | } while (isspace(*chptr)); |
805 | |
806 | element->indent = strndup(start, chptr - start); |
807 | start = chptr; |
808 | |
809 | line->numElements++; |
810 | first = 0; |
811 | } |
812 | |
813 | if (!line->numElements) |
814 | line->type = LT_WHITESPACE; |
815 | else { |
816 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
817 | if (line->type == LT_UNKNOWN) { |
818 | /* zipl does [title] instead of something reasonable like all |
819 | * the other boot loaders. kind of ugly */ |
820 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
821 | line->type = LT_TITLE; |
822 | } |
823 | |
824 | /* this is awkward, but we need to be able to handle keywords |
825 | that begin with a # (specifically for #boot in grub.conf), |
826 | but still make comments lines with no elements (everything |
827 | stored in the indent */ |
828 | if (*line->elements[0].item == '#') { |
829 | char * fullLine; |
830 | int len; |
831 | |
832 | len = strlen(line->indent); |
833 | for (int i = 0; i < line->numElements; i++) |
834 | len += strlen(line->elements[i].item) + |
835 | strlen(line->elements[i].indent); |
836 | |
837 | fullLine = malloc(len + 1); |
838 | strcpy(fullLine, line->indent); |
839 | free(line->indent); |
840 | line->indent = fullLine; |
841 | |
842 | for (int i = 0; i < line->numElements; i++) { |
843 | strcat(fullLine, line->elements[i].item); |
844 | strcat(fullLine, line->elements[i].indent); |
845 | free(line->elements[i].item); |
846 | free(line->elements[i].indent); |
847 | } |
848 | |
849 | line->type = LT_WHITESPACE; |
850 | line->numElements = 0; |
851 | } |
852 | } else { |
853 | struct keywordTypes *kw; |
854 | |
855 | kw = getKeywordByType(line->type, cfi); |
856 | |
857 | /* space isn't the only separator, we need to split |
858 | * elements up more |
859 | */ |
860 | if (!isspace(kw->separatorChar)) { |
861 | char indent[2] = ""; |
862 | indent[0] = kw->separatorChar; |
863 | for (int i = 1; i < line->numElements; i++) { |
864 | char *p; |
865 | int numNewElements; |
866 | |
867 | numNewElements = 0; |
868 | p = line->elements[i].item; |
869 | while (*p != '\0') { |
870 | if (*p == kw->separatorChar) |
871 | numNewElements++; |
872 | p++; |
873 | } |
874 | if (line->numElements + numNewElements >= elementsAlloced) { |
875 | elementsAlloced += numNewElements + 5; |
876 | line->elements = realloc(line->elements, |
877 | sizeof(*line->elements) * elementsAlloced); |
878 | } |
879 | |
880 | for (int j = line->numElements; j > i; j--) { |
881 | line->elements[j + numNewElements] = line->elements[j]; |
882 | } |
883 | line->numElements += numNewElements; |
884 | |
885 | p = line->elements[i].item; |
886 | while (*p != '\0') { |
887 | |
888 | while (*p != kw->separatorChar && *p != '\0') p++; |
889 | if (*p == '\0') { |
890 | break; |
891 | } |
892 | |
893 | line->elements[i + 1].indent = line->elements[i].indent; |
894 | line->elements[i].indent = strdup(indent); |
895 | *p++ = '\0'; |
896 | i++; |
897 | line->elements[i].item = strdup(p); |
898 | } |
899 | } |
900 | } |
901 | } |
902 | } |
903 | |
904 | return 0; |
905 | } |
906 | |
907 | static struct grubConfig * readConfig(const char * inName, |
908 | struct configFileInfo * cfi) { |
909 | int in; |
910 | char * incoming = NULL, * head; |
911 | int rc; |
912 | int sawEntry = 0; |
913 | int movedLine = 0; |
914 | struct grubConfig * cfg; |
915 | struct singleLine * last = NULL, * line, * defaultLine = NULL; |
916 | char * end; |
917 | struct singleEntry * entry = NULL; |
918 | int len; |
919 | char * buf; |
920 | |
921 | if (!strcmp(inName, "-")) { |
922 | in = 0; |
923 | } else { |
924 | if ((in = open(inName, O_RDONLY)) < 0) { |
925 | fprintf(stderr, _("error opening %s for read: %s\n"), |
926 | inName, strerror(errno)); |
927 | return NULL; |
928 | } |
929 | } |
930 | |
931 | rc = readFile(in, &incoming); |
932 | close(in); |
933 | if (rc) return NULL; |
934 | |
935 | head = incoming; |
936 | cfg = malloc(sizeof(*cfg)); |
937 | cfg->primaryIndent = strdup(""); |
938 | cfg->secondaryIndent = strdup("\t"); |
939 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
940 | cfg->cfi = cfi; |
941 | cfg->theLines = NULL; |
942 | cfg->entries = NULL; |
943 | cfg->fallbackImage = 0; |
944 | |
945 | /* copy everything we have */ |
946 | while (*head) { |
947 | line = malloc(sizeof(*line)); |
948 | lineInit(line); |
949 | |
950 | if (getNextLine(&head, line, cfi)) { |
951 | free(line); |
952 | /* XXX memory leak of everything in cfg */ |
953 | return NULL; |
954 | } |
955 | |
956 | if (!sawEntry && line->numElements) { |
957 | free(cfg->primaryIndent); |
958 | cfg->primaryIndent = strdup(line->indent); |
959 | } else if (line->numElements) { |
960 | free(cfg->secondaryIndent); |
961 | cfg->secondaryIndent = strdup(line->indent); |
962 | } |
963 | |
964 | if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) { |
965 | sawEntry = 1; |
966 | if (!entry) { |
967 | cfg->entries = malloc(sizeof(*entry)); |
968 | entry = cfg->entries; |
969 | } else { |
970 | entry->next = malloc(sizeof(*entry)); |
971 | entry = entry->next; |
972 | } |
973 | |
974 | entry->skip = 0; |
975 | entry->multiboot = 0; |
976 | entry->lines = NULL; |
977 | entry->next = NULL; |
978 | } |
979 | |
980 | if (line->type == LT_SET_VARIABLE) { |
981 | dbgPrintf("found 'set' command (%d elements): ", line->numElements); |
982 | dbgPrintf("%s", line->indent); |
983 | for (int i = 0; i < line->numElements; i++) |
984 | dbgPrintf("\"%s\"%s", line->elements[i].item, line->elements[i].indent); |
985 | dbgPrintf("\n"); |
986 | struct keywordTypes *kwType = getKeywordByType(LT_DEFAULT, cfi); |
987 | if (kwType && line->numElements == 3 && |
988 | !strcmp(line->elements[1].item, kwType->key)) { |
989 | dbgPrintf("Line sets default config\n"); |
990 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
991 | defaultLine = line; |
992 | } |
993 | } else if (line->type == LT_DEFAULT && line->numElements == 2) { |
994 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
995 | defaultLine = line; |
996 | |
997 | } else if (line->type == LT_KERNEL) { |
998 | /* if by some freak chance this is multiboot and the "module" |
999 | * lines came earlier in the template, make sure to use LT_HYPER |
1000 | * instead of LT_KERNEL now |
1001 | */ |
1002 | if (entry->multiboot) |
1003 | line->type = LT_HYPER; |
1004 | |
1005 | } else if (line->type == LT_MBMODULE) { |
1006 | /* go back and fix the LT_KERNEL line to indicate LT_HYPER |
1007 | * instead, now that we know this is a multiboot entry. |
1008 | * This only applies to grub, but that's the only place we |
1009 | * should find LT_MBMODULE lines anyway. |
1010 | */ |
1011 | for (struct singleLine *l = entry->lines; l; l = l->next) { |
1012 | if (l->type == LT_HYPER) |
1013 | break; |
1014 | else if (l->type == LT_KERNEL) { |
1015 | l->type = LT_HYPER; |
1016 | break; |
1017 | } |
1018 | } |
1019 | entry->multiboot = 1; |
1020 | |
1021 | } else if (line->type == LT_HYPER) { |
1022 | entry->multiboot = 1; |
1023 | |
1024 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
1025 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); |
1026 | if (*end) cfg->fallbackImage = -1; |
1027 | |
1028 | } else if (line->type == LT_TITLE && line->numElements > 1) { |
1029 | /* make the title a single argument (undoing our parsing) */ |
1030 | len = 0; |
1031 | for (int i = 1; i < line->numElements; i++) { |
1032 | len += strlen(line->elements[i].item); |
1033 | len += strlen(line->elements[i].indent); |
1034 | } |
1035 | buf = malloc(len + 1); |
1036 | *buf = '\0'; |
1037 | |
1038 | for (int i = 1; i < line->numElements; i++) { |
1039 | strcat(buf, line->elements[i].item); |
1040 | free(line->elements[i].item); |
1041 | |
1042 | if ((i + 1) != line->numElements) { |
1043 | strcat(buf, line->elements[i].indent); |
1044 | free(line->elements[i].indent); |
1045 | } |
1046 | } |
1047 | |
1048 | line->elements[1].indent = |
1049 | line->elements[line->numElements - 1].indent; |
1050 | line->elements[1].item = buf; |
1051 | line->numElements = 2; |
1052 | } else if (line->type == LT_MENUENTRY && line->numElements > 3) { |
1053 | /* let --remove-kernel="TITLE=what" work */ |
1054 | len = 0; |
1055 | char *extras; |
1056 | char *title; |
1057 | |
1058 | for (int i = 1; i < line->numElements; i++) { |
1059 | len += strlen(line->elements[i].item); |
1060 | len += strlen(line->elements[i].indent); |
1061 | } |
1062 | buf = malloc(len + 1); |
1063 | *buf = '\0'; |
1064 | |
1065 | /* allocate mem for extra flags. */ |
1066 | extras = malloc(len + 1); |
1067 | *extras = '\0'; |
1068 | |
1069 | /* get title. */ |
1070 | for (int i = 0; i < line->numElements; i++) { |
1071 | if (!strcmp(line->elements[i].item, "menuentry")) |
1072 | continue; |
1073 | if (isquote(*line->elements[i].item)) |
1074 | title = line->elements[i].item + 1; |
1075 | else |
1076 | title = line->elements[i].item; |
1077 | |
1078 | len = strlen(title); |
1079 | if (isquote(title[len-1])) { |
1080 | strncat(buf, title,len-1); |
1081 | break; |
1082 | } else { |
1083 | strcat(buf, title); |
1084 | strcat(buf, line->elements[i].indent); |
1085 | } |
1086 | } |
1087 | |
1088 | /* get extras */ |
1089 | int count = 0; |
1090 | for (int i = 0; i < line->numElements; i++) { |
1091 | if (count >= 2) { |
1092 | strcat(extras, line->elements[i].item); |
1093 | strcat(extras, line->elements[i].indent); |
1094 | } |
1095 | |
1096 | if (!strcmp(line->elements[i].item, "menuentry")) |
1097 | continue; |
1098 | |
1099 | /* count ' or ", there should be two in menuentry line. */ |
1100 | if (isquote(*line->elements[i].item)) |
1101 | count++; |
1102 | |
1103 | len = strlen(line->elements[i].item); |
1104 | |
1105 | if (isquote(line->elements[i].item[len -1])) |
1106 | count++; |
1107 | |
1108 | /* ok, we get the final ' or ", others are extras. */ |
1109 | } |
1110 | line->elements[1].indent = |
1111 | line->elements[line->numElements - 2].indent; |
1112 | line->elements[1].item = buf; |
1113 | line->elements[2].indent = |
1114 | line->elements[line->numElements - 2].indent; |
1115 | line->elements[2].item = extras; |
1116 | line->numElements = 3; |
1117 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
1118 | /* Strip off any " which may be present; they'll be put back |
1119 | on write. This is one of the few (the only?) places that grubby |
1120 | canonicalizes the output */ |
1121 | |
1122 | if (line->numElements >= 2) { |
1123 | int last, len; |
1124 | |
1125 | if (isquote(*line->elements[1].item)) |
1126 | memmove(line->elements[1].item, line->elements[1].item + 1, |
1127 | strlen(line->elements[1].item + 1) + 1); |
1128 | |
1129 | last = line->numElements - 1; |
1130 | len = strlen(line->elements[last].item) - 1; |
1131 | if (isquote(line->elements[last].item[len])) |
1132 | line->elements[last].item[len] = '\0'; |
1133 | } |
1134 | } |
1135 | |
1136 | /* If we find a generic config option which should live at the |
1137 | top of the file, move it there. Old versions of grubby were |
1138 | probably responsible for putting new images in the wrong |
1139 | place in front of it anyway. */ |
1140 | if (sawEntry && line->type == LT_GENERIC) { |
1141 | struct singleLine **l = &cfg->theLines; |
1142 | struct singleLine **last_nonws = &cfg->theLines; |
1143 | while (*l) { |
1144 | if ((*l)->type != LT_WHITESPACE) |
1145 | last_nonws = &((*l)->next); |
1146 | l = &((*l)->next); |
1147 | } |
1148 | line->next = *last_nonws; |
1149 | *last_nonws = line; |
1150 | movedLine = 1; |
1151 | continue; /* without setting 'last' */ |
1152 | } |
1153 | |
1154 | /* If a second line of whitespace happens after a generic option |
1155 | which was moved, drop it. */ |
1156 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { |
1157 | lineFree(line); |
1158 | free(line); |
1159 | movedLine = 0; |
1160 | continue; |
1161 | } |
1162 | movedLine = 0; |
1163 | |
1164 | if (sawEntry) { |
1165 | if (!entry->lines) |
1166 | entry->lines = line; |
1167 | else |
1168 | last->next = line; |
1169 | dbgPrintf("readConfig added %s to %p\n", getKeyByType(line->type, cfi), entry); |
1170 | |
1171 | /* we could have seen this outside of an entry... if so, we |
1172 | * ignore it like any other line we don't grok */ |
1173 | if (line->type == LT_ENTRY_END && sawEntry) |
1174 | sawEntry = 0; |
1175 | } else { |
1176 | if (!cfg->theLines) |
1177 | cfg->theLines = line; |
1178 | else |
1179 | last->next = line; |
1180 | dbgPrintf("readConfig added %s to cfg\n", getKeyByType(line->type, cfi)); |
1181 | } |
1182 | |
1183 | last = line; |
1184 | } |
1185 | |
1186 | free(incoming); |
1187 | |
1188 | dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset"); |
1189 | if (defaultLine) { |
1190 | if (defaultLine->numElements > 2 && |
1191 | cfi->defaultSupportSaved && |
1192 | !strncmp(defaultLine->elements[2].item,"\"${saved_entry}\"", 16)) { |
1193 | cfg->defaultImage = DEFAULT_SAVED_GRUB2; |
1194 | } else if (cfi->defaultIsVariable) { |
1195 | char *value = defaultLine->elements[2].item; |
1196 | while (*value && (*value == '"' || *value == '\'' || |
1197 | *value == ' ' || *value == '\t')) |
1198 | value++; |
1199 | cfg->defaultImage = strtol(value, &end, 10); |
1200 | while (*end && (*end == '"' || *end == '\'' || |
1201 | *end == ' ' || *end == '\t')) |
1202 | end++; |
1203 | if (*end) cfg->defaultImage = -1; |
1204 | } else if (cfi->defaultSupportSaved && |
1205 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { |
1206 | cfg->defaultImage = DEFAULT_SAVED; |
1207 | } else if (cfi->defaultIsIndex) { |
1208 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); |
1209 | if (*end) cfg->defaultImage = -1; |
1210 | } else if (defaultLine->numElements >= 2) { |
1211 | int i = 0; |
1212 | while ((entry = findEntryByIndex(cfg, i))) { |
1213 | for (line = entry->lines; line; line = line->next) |
1214 | if (line->type == LT_TITLE) break; |
1215 | |
1216 | if (!cfi->titleBracketed) { |
1217 | if (line && (line->numElements >= 2) && |
1218 | !strcmp(defaultLine->elements[1].item, |
1219 | line->elements[1].item)) break; |
1220 | } else if (line) { |
1221 | if (!strcmp(defaultLine->elements[1].item, |
1222 | extractTitle(line))) break; |
1223 | } |
1224 | i++; |
1225 | entry = NULL; |
1226 | } |
1227 | |
1228 | if (entry){ |
1229 | cfg->defaultImage = i; |
1230 | }else{ |
1231 | cfg->defaultImage = -1; |
1232 | } |
1233 | } |
1234 | } else { |
1235 | cfg->defaultImage = 0; |
1236 | } |
1237 | |
1238 | return cfg; |
1239 | } |
1240 | |
1241 | static void writeDefault(FILE * out, char * indent, |
1242 | char * separator, struct grubConfig * cfg) { |
1243 | struct singleEntry * entry; |
1244 | struct singleLine * line; |
1245 | int i; |
1246 | |
1247 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; |
1248 | |
1249 | if (cfg->defaultImage == DEFAULT_SAVED) |
1250 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
1251 | else if (cfg->defaultImage == DEFAULT_SAVED_GRUB2) |
1252 | fprintf(out, "%sset default=\"${saved_entry}\"\n", indent); |
1253 | else if (cfg->defaultImage > -1) { |
1254 | if (cfg->cfi->defaultIsIndex) { |
1255 | if (cfg->cfi->defaultIsVariable) { |
1256 | fprintf(out, "%sset default=\"%d\"\n", indent, |
1257 | cfg->defaultImage); |
1258 | } else { |
1259 | fprintf(out, "%sdefault%s%d\n", indent, separator, |
1260 | cfg->defaultImage); |
1261 | } |
1262 | } else { |
1263 | int image = cfg->defaultImage; |
1264 | |
1265 | entry = cfg->entries; |
1266 | while (entry && entry->skip) entry = entry->next; |
1267 | |
1268 | i = 0; |
1269 | while (entry && i < image) { |
1270 | entry = entry->next; |
1271 | |
1272 | while (entry && entry->skip) entry = entry->next; |
1273 | i++; |
1274 | } |
1275 | |
1276 | if (!entry) return; |
1277 | |
1278 | line = getLineByType(LT_TITLE, entry->lines); |
1279 | |
1280 | if (line && line->numElements >= 2) |
1281 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1282 | line->elements[1].item); |
1283 | else if (line && (line->numElements == 1) && |
1284 | cfg->cfi->titleBracketed) { |
1285 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1286 | extractTitle(line)); |
1287 | } |
1288 | } |
1289 | } |
1290 | } |
1291 | |
1292 | static int writeConfig(struct grubConfig * cfg, char * outName, |
1293 | const char * prefix) { |
1294 | FILE * out; |
1295 | struct singleLine * line; |
1296 | struct singleEntry * entry; |
1297 | char * tmpOutName; |
1298 | int needs = MAIN_DEFAULT; |
1299 | struct stat sb; |
1300 | int i; |
1301 | |
1302 | if (!strcmp(outName, "-")) { |
1303 | out = stdout; |
1304 | tmpOutName = NULL; |
1305 | } else { |
1306 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
1307 | char * buf; |
1308 | int len = 256; |
1309 | int rc; |
1310 | |
1311 | /* most likely the symlink is relative, so change our |
1312 | directory to the dir of the symlink */ |
1313 | rc = chdir(dirname(outName)); |
1314 | do { |
1315 | buf = alloca(len + 1); |
1316 | rc = readlink(basename(outName), buf, len); |
1317 | if (rc == len) len += 256; |
1318 | } while (rc == len); |
1319 | |
1320 | if (rc < 0) { |
1321 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), |
1322 | outName, strerror(errno)); |
1323 | return 1; |
1324 | } |
1325 | |
1326 | outName = buf; |
1327 | outName[rc] = '\0'; |
1328 | } |
1329 | |
1330 | tmpOutName = alloca(strlen(outName) + 2); |
1331 | sprintf(tmpOutName, "%s-", outName); |
1332 | out = fopen(tmpOutName, "w"); |
1333 | if (!out) { |
1334 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, |
1335 | strerror(errno)); |
1336 | return 1; |
1337 | } |
1338 | |
1339 | if (!stat(outName, &sb)) { |
1340 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
1341 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), |
1342 | tmpOutName, strerror(errno)); |
1343 | fclose(out); |
1344 | unlink(tmpOutName); |
1345 | return 1; |
1346 | } |
1347 | } |
1348 | } |
1349 | |
1350 | line = cfg->theLines; |
1351 | struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi); |
1352 | while (line) { |
1353 | if (line->type == LT_SET_VARIABLE && defaultKw && |
1354 | line->numElements == 3 && |
1355 | !strcmp(line->elements[1].item, defaultKw->key)) { |
1356 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1357 | needs &= ~MAIN_DEFAULT; |
1358 | } else if (line->type == LT_DEFAULT) { |
1359 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1360 | needs &= ~MAIN_DEFAULT; |
1361 | } else if (line->type == LT_FALLBACK) { |
1362 | if (cfg->fallbackImage > -1) |
1363 | fprintf(out, "%s%s%s%d\n", line->indent, |
1364 | line->elements[0].item, line->elements[0].indent, |
1365 | cfg->fallbackImage); |
1366 | } else { |
1367 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1368 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1369 | tmpOutName, strerror(errno)); |
1370 | fclose(out); |
1371 | unlink(tmpOutName); |
1372 | return 1; |
1373 | } |
1374 | } |
1375 | |
1376 | line = line->next; |
1377 | } |
1378 | |
1379 | if (needs & MAIN_DEFAULT) { |
1380 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
1381 | needs &= ~MAIN_DEFAULT; |
1382 | } |
1383 | |
1384 | i = 0; |
1385 | while ((entry = findEntryByIndex(cfg, i++))) { |
1386 | if (entry->skip) continue; |
1387 | |
1388 | line = entry->lines; |
1389 | while (line) { |
1390 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1391 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1392 | tmpOutName, strerror(errno)); |
1393 | fclose(out); |
1394 | unlink(tmpOutName); |
1395 | return 1; |
1396 | } |
1397 | line = line->next; |
1398 | } |
1399 | } |
1400 | |
1401 | if (tmpOutName) { |
1402 | if (rename(tmpOutName, outName)) { |
1403 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), |
1404 | tmpOutName, outName, strerror(errno)); |
1405 | unlink(outName); |
1406 | return 1; |
1407 | } |
1408 | } |
1409 | |
1410 | return 0; |
1411 | } |
1412 | |
1413 | static int numEntries(struct grubConfig *cfg) { |
1414 | int i = 0; |
1415 | struct singleEntry * entry; |
1416 | |
1417 | entry = cfg->entries; |
1418 | while (entry) { |
1419 | if (!entry->skip) |
1420 | i++; |
1421 | entry = entry->next; |
1422 | } |
1423 | return i; |
1424 | } |
1425 | |
1426 | static char *findDiskForRoot() |
1427 | { |
1428 | int fd; |
1429 | char buf[65536]; |
1430 | char *devname; |
1431 | char *chptr; |
1432 | int rc; |
1433 | |
1434 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { |
1435 | fprintf(stderr, "grubby: failed to open %s: %s\n", |
1436 | _PATH_MOUNTED, strerror(errno)); |
1437 | return NULL; |
1438 | } |
1439 | |
1440 | rc = read(fd, buf, sizeof(buf) - 1); |
1441 | if (rc <= 0) { |
1442 | fprintf(stderr, "grubby: failed to read %s: %s\n", |
1443 | _PATH_MOUNTED, strerror(errno)); |
1444 | close(fd); |
1445 | return NULL; |
1446 | } |
1447 | close(fd); |
1448 | buf[rc] = '\0'; |
1449 | chptr = buf; |
1450 | |
1451 | char *foundanswer = NULL; |
1452 | |
1453 | while (chptr && chptr != buf+rc) { |
1454 | devname = chptr; |
1455 | |
1456 | /* |
1457 | * The first column of a mtab entry is the device, but if the entry is a |
1458 | * special device it won't start with /, so move on to the next line. |
1459 | */ |
1460 | if (*devname != '/') { |
1461 | chptr = strchr(chptr, '\n'); |
1462 | if (chptr) |
1463 | chptr++; |
1464 | continue; |
1465 | } |
1466 | |
1467 | /* Seek to the next space */ |
1468 | chptr = strchr(chptr, ' '); |
1469 | if (!chptr) { |
1470 | fprintf(stderr, "grubby: error parsing %s: %s\n", |
1471 | _PATH_MOUNTED, strerror(errno)); |
1472 | return NULL; |
1473 | } |
1474 | |
1475 | /* |
1476 | * The second column of a mtab entry is the mount point, we are looking |
1477 | * for '/' obviously. |
1478 | */ |
1479 | if (*(++chptr) == '/' && *(++chptr) == ' ') { |
1480 | /* remember the last / entry in mtab */ |
1481 | foundanswer = devname; |
1482 | } |
1483 | |
1484 | /* Next line */ |
1485 | chptr = strchr(chptr, '\n'); |
1486 | if (chptr) |
1487 | chptr++; |
1488 | } |
1489 | |
1490 | /* Return the last / entry found */ |
1491 | if (foundanswer) { |
1492 | chptr = strchr(foundanswer, ' '); |
1493 | *chptr = '\0'; |
1494 | return strdup(foundanswer); |
1495 | } |
1496 | |
1497 | return NULL; |
1498 | } |
1499 | |
1500 | void printEntry(struct singleEntry * entry) { |
1501 | int i; |
1502 | struct singleLine * line; |
1503 | |
1504 | for (line = entry->lines; line; line = line->next) { |
1505 | fprintf(stderr, "DBG: %s", line->indent); |
1506 | for (i = 0; i < line->numElements; i++) { |
1507 | /* Need to handle this, because we strip the quotes from |
1508 | * menuentry when read it. */ |
1509 | if (line->type == LT_MENUENTRY && i == 1) { |
1510 | if(!isquote(*line->elements[i].item)) |
1511 | fprintf(stderr, "\'%s\'", line->elements[i].item); |
1512 | else |
1513 | fprintf(stderr, "%s", line->elements[i].item); |
1514 | fprintf(stderr, "%s", line->elements[i].indent); |
1515 | |
1516 | continue; |
1517 | } |
1518 | |
1519 | fprintf(stderr, "%s%s", |
1520 | line->elements[i].item, line->elements[i].indent); |
1521 | } |
1522 | fprintf(stderr, "\n"); |
1523 | } |
1524 | } |
1525 | |
1526 | void notSuitablePrintf(struct singleEntry * entry, const char *fmt, ...) |
1527 | { |
1528 | va_list argp; |
1529 | |
1530 | if (!debug) |
1531 | return; |
1532 | |
1533 | va_start(argp, fmt); |
1534 | fprintf(stderr, "DBG: Image entry failed: "); |
1535 | vfprintf(stderr, fmt, argp); |
1536 | printEntry(entry); |
1537 | va_end(argp); |
1538 | } |
1539 | |
1540 | #define beginswith(s, c) ((s) && (s)[0] == (c)) |
1541 | |
1542 | static int endswith(const char *s, char c) |
1543 | { |
1544 | int slen; |
1545 | |
1546 | if (!s || !s[0]) |
1547 | return 0; |
1548 | slen = strlen(s) - 1; |
1549 | |
1550 | return s[slen] == c; |
1551 | } |
1552 | |
1553 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, |
1554 | int skipRemoved, int flags) { |
1555 | struct singleLine * line; |
1556 | char * fullName; |
1557 | int i; |
1558 | char * dev; |
1559 | char * rootspec; |
1560 | char * rootdev; |
1561 | |
1562 | if (skipRemoved && entry->skip) { |
1563 | notSuitablePrintf(entry, "marked to skip\n"); |
1564 | return 0; |
1565 | } |
1566 | |
1567 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1568 | if (!line) { |
1569 | notSuitablePrintf(entry, "no line found\n"); |
1570 | return 0; |
1571 | } |
1572 | if (line->numElements < 2) { |
1573 | notSuitablePrintf(entry, "line has only %d elements\n", |
1574 | line->numElements); |
1575 | return 0; |
1576 | } |
1577 | |
1578 | if (flags & GRUBBY_BADIMAGE_OKAY) return 1; |
1579 | |
1580 | fullName = alloca(strlen(bootPrefix) + |
1581 | strlen(line->elements[1].item) + 1); |
1582 | rootspec = getRootSpecifier(line->elements[1].item); |
1583 | int rootspec_offset = rootspec ? strlen(rootspec) : 0; |
1584 | int hasslash = endswith(bootPrefix, '/') || |
1585 | beginswith(line->elements[1].item + rootspec_offset, '/'); |
1586 | sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/", |
1587 | line->elements[1].item + rootspec_offset); |
1588 | if (access(fullName, R_OK)) { |
1589 | notSuitablePrintf(entry, "access to %s failed\n", fullName); |
1590 | return 0; |
1591 | } |
1592 | for (i = 2; i < line->numElements; i++) |
1593 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1594 | if (i < line->numElements) { |
1595 | dev = line->elements[i].item + 5; |
1596 | } else { |
1597 | /* look for a lilo style LT_ROOT line */ |
1598 | line = getLineByType(LT_ROOT, entry->lines); |
1599 | |
1600 | if (line && line->numElements >= 2) { |
1601 | dev = line->elements[1].item; |
1602 | } else { |
1603 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS. |
1604 | * grub+multiboot uses LT_MBMODULE for the args, so check that too. |
1605 | */ |
1606 | line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines); |
1607 | |
1608 | /* failed to find one */ |
1609 | if (!line) { |
1610 | notSuitablePrintf(entry, "no line found\n"); |
1611 | return 0; |
1612 | } |
1613 | |
1614 | for (i = 1; i < line->numElements; i++) |
1615 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1616 | if (i < line->numElements) |
1617 | dev = line->elements[i].item + 5; |
1618 | else { |
1619 | notSuitablePrintf(entry, "no root= entry found\n"); |
1620 | /* it failed too... can't find root= */ |
1621 | return 0; |
1622 | } |
1623 | } |
1624 | } |
1625 | |
1626 | dev = getpathbyspec(dev); |
1627 | if (!getpathbyspec(dev)) { |
1628 | notSuitablePrintf(entry, "can't find blkid entry for %s\n", dev); |
1629 | return 0; |
1630 | } else |
1631 | dev = getpathbyspec(dev); |
1632 | |
1633 | rootdev = findDiskForRoot(); |
1634 | if (!rootdev) { |
1635 | notSuitablePrintf(entry, "can't find root device\n"); |
1636 | return 0; |
1637 | } |
1638 | |
1639 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
1640 | notSuitablePrintf(entry, "uuid missing: rootdev %s, dev %s\n", |
1641 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1642 | free(rootdev); |
1643 | return 0; |
1644 | } |
1645 | |
1646 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
1647 | notSuitablePrintf(entry, "uuid mismatch: rootdev %s, dev %s\n", |
1648 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1649 | free(rootdev); |
1650 | return 0; |
1651 | } |
1652 | |
1653 | free(rootdev); |
1654 | |
1655 | return 1; |
1656 | } |
1657 | |
1658 | /* returns the first match on or after the one pointed to by index (if index |
1659 | is not NULL) which is not marked as skip */ |
1660 | struct singleEntry * findEntryByPath(struct grubConfig * config, |
1661 | const char * kernel, const char * prefix, |
1662 | int * index) { |
1663 | struct singleEntry * entry = NULL; |
1664 | struct singleLine * line; |
1665 | int i; |
1666 | char * chptr; |
1667 | char * rootspec = NULL; |
1668 | enum lineType_e checkType = LT_KERNEL; |
1669 | |
1670 | if (isdigit(*kernel)) { |
1671 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
1672 | |
1673 | i = 0; |
1674 | indexVars[i] = strtol(kernel, &chptr, 10); |
1675 | while (*chptr == ',') { |
1676 | i++; |
1677 | kernel = chptr + 1; |
1678 | indexVars[i] = strtol(kernel, &chptr, 10); |
1679 | } |
1680 | |
1681 | if (*chptr) { |
1682 | /* can't parse it, bail */ |
1683 | return NULL; |
1684 | } |
1685 | |
1686 | indexVars[i + 1] = -1; |
1687 | |
1688 | i = 0; |
1689 | if (index) { |
1690 | while (i < *index) i++; |
1691 | if (indexVars[i] == -1) return NULL; |
1692 | } |
1693 | |
1694 | entry = findEntryByIndex(config, indexVars[i]); |
1695 | if (!entry) return NULL; |
1696 | |
1697 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1698 | if (!line) return NULL; |
1699 | |
1700 | if (index) *index = indexVars[i]; |
1701 | return entry; |
1702 | } |
1703 | |
1704 | if (!strcmp(kernel, "DEFAULT")) { |
1705 | if (index && *index > config->defaultImage) { |
1706 | entry = NULL; |
1707 | } else { |
1708 | entry = findEntryByIndex(config, config->defaultImage); |
1709 | if (entry && entry->skip) |
1710 | entry = NULL; |
1711 | else if (index) |
1712 | *index = config->defaultImage; |
1713 | } |
1714 | } else if (!strcmp(kernel, "ALL")) { |
1715 | if (index) |
1716 | i = *index; |
1717 | else |
1718 | i = 0; |
1719 | |
1720 | while ((entry = findEntryByIndex(config, i))) { |
1721 | if (!entry->skip) break; |
1722 | i++; |
1723 | } |
1724 | |
1725 | if (entry && index) |
1726 | *index = i; |
1727 | } else { |
1728 | if (index) |
1729 | i = *index; |
1730 | else |
1731 | i = 0; |
1732 | |
1733 | if (!strncmp(kernel, "TITLE=", 6)) { |
1734 | prefix = ""; |
1735 | checkType = LT_TITLE|LT_MENUENTRY; |
1736 | kernel += 6; |
1737 | } |
1738 | |
1739 | for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) { |
1740 | if (entry->skip) continue; |
1741 | |
1742 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry); |
1743 | |
1744 | /* check all the lines matching checkType */ |
1745 | for (line = entry->lines; line; line = line->next) { |
1746 | line = getLineByType(entry->multiboot && checkType == LT_KERNEL ? |
1747 | LT_KERNEL|LT_MBMODULE|LT_HYPER : |
1748 | checkType, line); |
1749 | if (!line) break; /* not found in this entry */ |
1750 | |
1751 | if (line && line->type != LT_MENUENTRY && |
1752 | line->numElements >= 2) { |
1753 | rootspec = getRootSpecifier(line->elements[1].item); |
1754 | if (!strcmp(line->elements[1].item + |
1755 | ((rootspec != NULL) ? strlen(rootspec) : 0), |
1756 | kernel + strlen(prefix))) |
1757 | break; |
1758 | } |
1759 | if(line->type == LT_MENUENTRY && |
1760 | !strcmp(line->elements[1].item, kernel)) |
1761 | break; |
1762 | } |
1763 | |
1764 | /* make sure this entry has a kernel identifier; this skips |
1765 | * non-Linux boot entries (could find netbsd etc, though, which is |
1766 | * unfortunate) |
1767 | */ |
1768 | if (line && getLineByType(LT_KERNEL|LT_HYPER, entry->lines)) |
1769 | break; /* found 'im! */ |
1770 | } |
1771 | |
1772 | if (index) *index = i; |
1773 | } |
1774 | |
1775 | return entry; |
1776 | } |
1777 | |
1778 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { |
1779 | struct singleEntry * entry; |
1780 | |
1781 | entry = cfg->entries; |
1782 | while (index && entry) { |
1783 | entry = entry->next; |
1784 | index--; |
1785 | } |
1786 | |
1787 | return entry; |
1788 | } |
1789 | |
1790 | /* Find a good template to use for the new kernel. An entry is |
1791 | * good if the kernel and mkinitrd exist (even if the entry |
1792 | * is going to be removed). Try and use the default entry, but |
1793 | * if that doesn't work just take the first. If we can't find one, |
1794 | * bail. */ |
1795 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, |
1796 | int * indexPtr, int skipRemoved, int flags) { |
1797 | struct singleEntry * entry, * entry2; |
1798 | int index; |
1799 | |
1800 | if (cfg->defaultImage > -1) { |
1801 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
1802 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
1803 | if (indexPtr) *indexPtr = cfg->defaultImage; |
1804 | return entry; |
1805 | } |
1806 | } |
1807 | |
1808 | index = 0; |
1809 | while ((entry = findEntryByIndex(cfg, index))) { |
1810 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
1811 | int j; |
1812 | for (j = 0; j < index; j++) { |
1813 | entry2 = findEntryByIndex(cfg, j); |
1814 | if (entry2->skip) index--; |
1815 | } |
1816 | if (indexPtr) *indexPtr = index; |
1817 | |
1818 | return entry; |
1819 | } |
1820 | |
1821 | index++; |
1822 | } |
1823 | |
1824 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); |
1825 | |
1826 | return NULL; |
1827 | } |
1828 | |
1829 | char * findBootPrefix(void) { |
1830 | struct stat sb, sb2; |
1831 | |
1832 | stat("/", &sb); |
1833 | #ifdef __ia64__ |
1834 | stat("/boot/efi/EFI/redhat/", &sb2); |
1835 | #else |
1836 | stat("/boot", &sb2); |
1837 | #endif |
1838 | |
1839 | if (sb.st_dev == sb2.st_dev) |
1840 | return strdup(""); |
1841 | |
1842 | #ifdef __ia64__ |
1843 | return strdup("/boot/efi/EFI/redhat/"); |
1844 | #else |
1845 | return strdup("/boot"); |
1846 | #endif |
1847 | } |
1848 | |
1849 | void markRemovedImage(struct grubConfig * cfg, const char * image, |
1850 | const char * prefix) { |
1851 | struct singleEntry * entry; |
1852 | |
1853 | if (!image) |
1854 | return; |
1855 | |
1856 | /* check and see if we're removing the default image */ |
1857 | if (isdigit(*image)) { |
1858 | entry = findEntryByPath(cfg, image, prefix, NULL); |
1859 | if(entry) |
1860 | entry->skip = 1; |
1861 | return; |
1862 | } |
1863 | |
1864 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
1865 | entry->skip = 1; |
1866 | } |
1867 | |
1868 | void setDefaultImage(struct grubConfig * config, int hasNew, |
1869 | const char * defaultKernelPath, int newIsDefault, |
1870 | const char * prefix, int flags) { |
1871 | struct singleEntry * entry, * entry2, * newDefault; |
1872 | int i, j; |
1873 | |
1874 | if (newIsDefault) { |
1875 | config->defaultImage = 0; |
1876 | return; |
1877 | } else if (defaultKernelPath) { |
1878 | i = 0; |
1879 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { |
1880 | config->defaultImage = i; |
1881 | } else { |
1882 | config->defaultImage = -1; |
1883 | return; |
1884 | } |
1885 | } |
1886 | |
1887 | /* defaultImage now points to what we'd like to use, but before any order |
1888 | changes */ |
1889 | if ((config->defaultImage == DEFAULT_SAVED) || |
1890 | (config->defaultImage == DEFAULT_SAVED_GRUB2)) |
1891 | /* default is set to saved, we don't want to change it */ |
1892 | return; |
1893 | |
1894 | if (config->defaultImage > -1) |
1895 | entry = findEntryByIndex(config, config->defaultImage); |
1896 | else |
1897 | entry = NULL; |
1898 | |
1899 | if (entry && !entry->skip) { |
1900 | /* we can preserve the default */ |
1901 | if (hasNew) |
1902 | config->defaultImage++; |
1903 | |
1904 | /* count the number of entries erased before this one */ |
1905 | for (j = 0; j < config->defaultImage; j++) { |
1906 | entry2 = findEntryByIndex(config, j); |
1907 | if (entry2->skip) config->defaultImage--; |
1908 | } |
1909 | } else if (hasNew) { |
1910 | config->defaultImage = 0; |
1911 | } else { |
1912 | /* Either we just erased the default (or the default line was bad |
1913 | * to begin with) and didn't put a new one in. We'll use the first |
1914 | * valid image. */ |
1915 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, |
1916 | flags); |
1917 | if (!newDefault) |
1918 | config->defaultImage = -1; |
1919 | } |
1920 | } |
1921 | |
1922 | void setFallbackImage(struct grubConfig * config, int hasNew) { |
1923 | struct singleEntry * entry, * entry2; |
1924 | int j; |
1925 | |
1926 | if (config->fallbackImage == -1) return; |
1927 | |
1928 | entry = findEntryByIndex(config, config->fallbackImage); |
1929 | if (!entry || entry->skip) { |
1930 | config->fallbackImage = -1; |
1931 | return; |
1932 | } |
1933 | |
1934 | if (hasNew) |
1935 | config->fallbackImage++; |
1936 | |
1937 | /* count the number of entries erased before this one */ |
1938 | for (j = 0; j < config->fallbackImage; j++) { |
1939 | entry2 = findEntryByIndex(config, j); |
1940 | if (entry2->skip) config->fallbackImage--; |
1941 | } |
1942 | } |
1943 | |
1944 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { |
1945 | struct singleLine * line; |
1946 | char * root = NULL; |
1947 | int i; |
1948 | |
1949 | printf("index=%d\n", index); |
1950 | |
1951 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1952 | if (!line) { |
1953 | printf("non linux entry\n"); |
1954 | return; |
1955 | } |
1956 | |
1957 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
1958 | printf("kernel=%s\n", line->elements[1].item); |
1959 | else |
1960 | printf("kernel=%s%s\n", prefix, line->elements[1].item); |
1961 | |
1962 | if (line->numElements >= 3) { |
1963 | printf("args=\""); |
1964 | i = 2; |
1965 | while (i < line->numElements) { |
1966 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
1967 | root = line->elements[i].item + 5; |
1968 | } else { |
1969 | printf("%s%s", line->elements[i].item, |
1970 | line->elements[i].indent); |
1971 | } |
1972 | |
1973 | i++; |
1974 | } |
1975 | printf("\"\n"); |
1976 | } else { |
1977 | line = getLineByType(LT_KERNELARGS, entry->lines); |
1978 | if (line) { |
1979 | char * s; |
1980 | |
1981 | printf("args=\""); |
1982 | i = 1; |
1983 | while (i < line->numElements) { |
1984 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
1985 | root = line->elements[i].item + 5; |
1986 | } else { |
1987 | s = line->elements[i].item; |
1988 | |
1989 | printf("%s%s", s, line->elements[i].indent); |
1990 | } |
1991 | |
1992 | i++; |
1993 | } |
1994 | |
1995 | s = line->elements[i - 1].indent; |
1996 | printf("\"\n"); |
1997 | } |
1998 | } |
1999 | |
2000 | if (!root) { |
2001 | line = getLineByType(LT_ROOT, entry->lines); |
2002 | if (line && line->numElements >= 2) |
2003 | root=line->elements[1].item; |
2004 | } |
2005 | |
2006 | if (root) { |
2007 | char * s = alloca(strlen(root) + 1); |
2008 | |
2009 | strcpy(s, root); |
2010 | if (s[strlen(s) - 1] == '"') |
2011 | s[strlen(s) - 1] = '\0'; |
2012 | /* make sure the root doesn't have a trailing " */ |
2013 | printf("root=%s\n", s); |
2014 | } |
2015 | |
2016 | line = getLineByType(LT_INITRD, entry->lines); |
2017 | |
2018 | if (line && line->numElements >= 2) { |
2019 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2020 | printf("initrd="); |
2021 | else |
2022 | printf("initrd=%s", prefix); |
2023 | |
2024 | for (i = 1; i < line->numElements; i++) |
2025 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
2026 | printf("\n"); |
2027 | } |
2028 | |
2029 | line = getLineByType(LT_TITLE, entry->lines); |
2030 | if (line) { |
2031 | printf("title=%s\n", line->elements[1].item); |
2032 | } else { |
2033 | char * title; |
2034 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2035 | title = grub2ExtractTitle(line); |
2036 | if (title) |
2037 | printf("title=%s\n", title); |
2038 | } |
2039 | } |
2040 | |
2041 | int isSuseSystem(void) { |
2042 | const char * path; |
2043 | const static char default_path[] = "/etc/SuSE-release"; |
2044 | |
2045 | if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL) |
2046 | path = default_path; |
2047 | |
2048 | if (!access(path, R_OK)) |
2049 | return 1; |
2050 | return 0; |
2051 | } |
2052 | |
2053 | int isSuseGrubConf(const char * path) { |
2054 | FILE * grubConf; |
2055 | char * line = NULL; |
2056 | size_t len = 0, res = 0; |
2057 | |
2058 | grubConf = fopen(path, "r"); |
2059 | if (!grubConf) { |
2060 | dbgPrintf("Could not open SuSE configuration file '%s'\n", path); |
2061 | return 0; |
2062 | } |
2063 | |
2064 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2065 | if (!strncmp(line, "setup", 5)) { |
2066 | fclose(grubConf); |
2067 | free(line); |
2068 | return 1; |
2069 | } |
2070 | } |
2071 | |
2072 | dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n", |
2073 | path); |
2074 | |
2075 | fclose(grubConf); |
2076 | free(line); |
2077 | return 0; |
2078 | } |
2079 | |
2080 | int suseGrubConfGetLba(const char * path, int * lbaPtr) { |
2081 | FILE * grubConf; |
2082 | char * line = NULL; |
2083 | size_t res = 0, len = 0; |
2084 | |
2085 | if (!path) return 1; |
2086 | if (!lbaPtr) return 1; |
2087 | |
2088 | grubConf = fopen(path, "r"); |
2089 | if (!grubConf) return 1; |
2090 | |
2091 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2092 | if (line[res - 1] == '\n') |
2093 | line[res - 1] = '\0'; |
2094 | else if (len > res) |
2095 | line[res] = '\0'; |
2096 | else { |
2097 | line = realloc(line, res + 1); |
2098 | line[res] = '\0'; |
2099 | } |
2100 | |
2101 | if (!strncmp(line, "setup", 5)) { |
2102 | if (strstr(line, "--force-lba")) { |
2103 | *lbaPtr = 1; |
2104 | } else { |
2105 | *lbaPtr = 0; |
2106 | } |
2107 | dbgPrintf("lba: %i\n", *lbaPtr); |
2108 | break; |
2109 | } |
2110 | } |
2111 | |
2112 | free(line); |
2113 | fclose(grubConf); |
2114 | return 0; |
2115 | } |
2116 | |
2117 | int suseGrubConfGetInstallDevice(const char * path, char ** devicePtr) { |
2118 | FILE * grubConf; |
2119 | char * line = NULL; |
2120 | size_t res = 0, len = 0; |
2121 | char * lastParamPtr = NULL; |
2122 | char * secLastParamPtr = NULL; |
2123 | char installDeviceNumber = '\0'; |
2124 | char * bounds = NULL; |
2125 | |
2126 | if (!path) return 1; |
2127 | if (!devicePtr) return 1; |
2128 | |
2129 | grubConf = fopen(path, "r"); |
2130 | if (!grubConf) return 1; |
2131 | |
2132 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2133 | if (strncmp(line, "setup", 5)) |
2134 | continue; |
2135 | |
2136 | if (line[res - 1] == '\n') |
2137 | line[res - 1] = '\0'; |
2138 | else if (len > res) |
2139 | line[res] = '\0'; |
2140 | else { |
2141 | line = realloc(line, res + 1); |
2142 | line[res] = '\0'; |
2143 | } |
2144 | |
2145 | lastParamPtr = bounds = line + res; |
2146 | |
2147 | /* Last parameter in grub may be an optional IMAGE_DEVICE */ |
2148 | while (!isspace(*lastParamPtr)) |
2149 | lastParamPtr--; |
2150 | lastParamPtr++; |
2151 | |
2152 | secLastParamPtr = lastParamPtr - 2; |
2153 | dbgPrintf("lastParamPtr: %s\n", lastParamPtr); |
2154 | |
2155 | if (lastParamPtr + 3 > bounds) { |
2156 | dbgPrintf("lastParamPtr going over boundary"); |
2157 | fclose(grubConf); |
2158 | free(line); |
2159 | return 1; |
2160 | } |
2161 | if (!strncmp(lastParamPtr, "(hd", 3)) |
2162 | lastParamPtr += 3; |
2163 | dbgPrintf("lastParamPtr: %c\n", *lastParamPtr); |
2164 | |
2165 | /* |
2166 | * Second last parameter will decide wether last parameter is |
2167 | * an IMAGE_DEVICE or INSTALL_DEVICE |
2168 | */ |
2169 | while (!isspace(*secLastParamPtr)) |
2170 | secLastParamPtr--; |
2171 | secLastParamPtr++; |
2172 | |
2173 | if (secLastParamPtr + 3 > bounds) { |
2174 | dbgPrintf("secLastParamPtr going over boundary"); |
2175 | fclose(grubConf); |
2176 | free(line); |
2177 | return 1; |
2178 | } |
2179 | dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr); |
2180 | if (!strncmp(secLastParamPtr, "(hd", 3)) { |
2181 | secLastParamPtr += 3; |
2182 | dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr); |
2183 | installDeviceNumber = *secLastParamPtr; |
2184 | } else { |
2185 | installDeviceNumber = *lastParamPtr; |
2186 | } |
2187 | |
2188 | *devicePtr = malloc(6); |
2189 | snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber); |
2190 | dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber); |
2191 | fclose(grubConf); |
2192 | free(line); |
2193 | return 0; |
2194 | } |
2195 | |
2196 | free(line); |
2197 | fclose(grubConf); |
2198 | return 1; |
2199 | } |
2200 | |
2201 | int grubGetBootFromDeviceMap(const char * device, |
2202 | char ** bootPtr) { |
2203 | FILE * deviceMap; |
2204 | char * line = NULL; |
2205 | size_t res = 0, len = 0; |
2206 | char * devicePtr; |
2207 | char * bounds = NULL; |
2208 | const char * path; |
2209 | const static char default_path[] = "/boot/grub/device.map"; |
2210 | |
2211 | if (!device) return 1; |
2212 | if (!bootPtr) return 1; |
2213 | |
2214 | if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL) |
2215 | path = default_path; |
2216 | |
2217 | dbgPrintf("opening grub device.map file from: %s\n", path); |
2218 | deviceMap = fopen(path, "r"); |
2219 | if (!deviceMap) |
2220 | return 1; |
2221 | |
2222 | while ((res = getline(&line, &len, deviceMap)) != -1) { |
2223 | if (!strncmp(line, "#", 1)) |
2224 | continue; |
2225 | |
2226 | if (line[res - 1] == '\n') |
2227 | line[res - 1] = '\0'; |
2228 | else if (len > res) |
2229 | line[res] = '\0'; |
2230 | else { |
2231 | line = realloc(line, res + 1); |
2232 | line[res] = '\0'; |
2233 | } |
2234 | |
2235 | devicePtr = line; |
2236 | bounds = line + res; |
2237 | |
2238 | while ((isspace(*line) && ((devicePtr + 1) <= bounds))) |
2239 | devicePtr++; |
2240 | dbgPrintf("device: %s\n", devicePtr); |
2241 | |
2242 | if (!strncmp(devicePtr, device, strlen(device))) { |
2243 | devicePtr += strlen(device); |
2244 | while (isspace(*devicePtr) && ((devicePtr + 1) <= bounds)) |
2245 | devicePtr++; |
2246 | |
2247 | *bootPtr = strdup(devicePtr); |
2248 | break; |
2249 | } |
2250 | } |
2251 | |
2252 | free(line); |
2253 | fclose(deviceMap); |
2254 | return 0; |
2255 | } |
2256 | |
2257 | int suseGrubConfGetBoot(const char * path, char ** bootPtr) { |
2258 | char * grubDevice; |
2259 | |
2260 | if (suseGrubConfGetInstallDevice(path, &grubDevice)) |
2261 | dbgPrintf("error looking for grub installation device\n"); |
2262 | else |
2263 | dbgPrintf("grubby installation device: %s\n", grubDevice); |
2264 | |
2265 | if (grubGetBootFromDeviceMap(grubDevice, bootPtr)) |
2266 | dbgPrintf("error looking for grub boot device\n"); |
2267 | else |
2268 | dbgPrintf("grubby boot device: %s\n", *bootPtr); |
2269 | |
2270 | free(grubDevice); |
2271 | return 0; |
2272 | } |
2273 | |
2274 | int parseSuseGrubConf(int * lbaPtr, char ** bootPtr) { |
2275 | /* |
2276 | * This SuSE grub configuration file at this location is not your average |
2277 | * grub configuration file, but instead the grub commands used to setup |
2278 | * grub on that system. |
2279 | */ |
2280 | const char * path; |
2281 | const static char default_path[] = "/etc/grub.conf"; |
2282 | |
2283 | if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL) |
2284 | path = default_path; |
2285 | |
2286 | if (!isSuseGrubConf(path)) return 1; |
2287 | |
2288 | if (lbaPtr) { |
2289 | *lbaPtr = 0; |
2290 | if (suseGrubConfGetLba(path, lbaPtr)) |
2291 | return 1; |
2292 | } |
2293 | |
2294 | if (bootPtr) { |
2295 | *bootPtr = NULL; |
2296 | suseGrubConfGetBoot(path, bootPtr); |
2297 | } |
2298 | |
2299 | return 0; |
2300 | } |
2301 | |
2302 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { |
2303 | FILE * in; |
2304 | char buf[1024]; |
2305 | char * chptr; |
2306 | char * start; |
2307 | char * param; |
2308 | |
2309 | in = fopen("/etc/conf.d/grub", "r"); |
2310 | if (!in) return 1; |
2311 | |
2312 | if (lbaPtr) *lbaPtr = 0; |
2313 | if (bootPtr) *bootPtr = NULL; |
2314 | |
2315 | while (fgets(buf, sizeof(buf), in)) { |
2316 | start = buf; |
2317 | while (isspace(*start)) start++; |
2318 | if (*start == '#') continue; |
2319 | |
2320 | chptr = strchr(start, '='); |
2321 | if (!chptr) continue; |
2322 | chptr--; |
2323 | while (*chptr && isspace(*chptr)) chptr--; |
2324 | chptr++; |
2325 | *chptr = '\0'; |
2326 | |
2327 | param = chptr + 1; |
2328 | while (*param && isspace(*param)) param++; |
2329 | if (*param == '=') { |
2330 | param++; |
2331 | while (*param && isspace(*param)) param++; |
2332 | } |
2333 | |
2334 | chptr = param; |
2335 | while (*chptr && !isspace(*chptr)) chptr++; |
2336 | *chptr = '\0'; |
2337 | |
2338 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
2339 | *lbaPtr = 1; |
2340 | else if (!strcmp(start, "boot") && bootPtr) |
2341 | *bootPtr = strdup(param); |
2342 | } |
2343 | |
2344 | fclose(in); |
2345 | |
2346 | return 0; |
2347 | } |
2348 | |
2349 | void dumpSysconfigGrub(void) { |
2350 | char * boot = NULL; |
2351 | int lba; |
2352 | |
2353 | if (isSuseSystem()) { |
2354 | if (parseSuseGrubConf(&lba, &boot)) { |
2355 | free(boot); |
2356 | return; |
2357 | } |
2358 | } else { |
2359 | if (parseSysconfigGrub(&lba, &boot)) { |
2360 | free(boot); |
2361 | return; |
2362 | } |
2363 | } |
2364 | |
2365 | if (lba) printf("lba\n"); |
2366 | if (boot) { |
2367 | printf("boot=%s\n", boot); |
2368 | free(boot); |
2369 | } |
2370 | } |
2371 | |
2372 | int displayInfo(struct grubConfig * config, char * kernel, |
2373 | const char * prefix) { |
2374 | int i = 0; |
2375 | struct singleEntry * entry; |
2376 | struct singleLine * line; |
2377 | |
2378 | entry = findEntryByPath(config, kernel, prefix, &i); |
2379 | if (!entry) { |
2380 | fprintf(stderr, _("grubby: kernel not found\n")); |
2381 | return 1; |
2382 | } |
2383 | |
2384 | /* this is a horrible hack to support /etc/conf.d/grub; there must |
2385 | be a better way */ |
2386 | if (config->cfi == &grubConfigType) { |
2387 | dumpSysconfigGrub(); |
2388 | } else { |
2389 | line = getLineByType(LT_BOOT, config->theLines); |
2390 | if (line && line->numElements >= 1) { |
2391 | printf("boot=%s\n", line->elements[1].item); |
2392 | } |
2393 | |
2394 | line = getLineByType(LT_LBA, config->theLines); |
2395 | if (line) printf("lba\n"); |
2396 | } |
2397 | |
2398 | displayEntry(entry, prefix, i); |
2399 | |
2400 | i++; |
2401 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
2402 | displayEntry(entry, prefix, i); |
2403 | i++; |
2404 | } |
2405 | |
2406 | return 0; |
2407 | } |
2408 | |
2409 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
2410 | struct singleLine * tmplLine, |
2411 | struct singleLine * prevLine, |
2412 | const char * val, |
2413 | struct configFileInfo * cfi) |
2414 | { |
2415 | struct singleLine * newLine = lineDup(tmplLine); |
2416 | |
2417 | if (val) { |
2418 | /* override the inherited value with our own. |
2419 | * This is a little weak because it only applies to elements[1] |
2420 | */ |
2421 | if (newLine->numElements > 1) |
2422 | removeElement(newLine, 1); |
2423 | insertElement(newLine, val, 1, cfi); |
2424 | |
2425 | /* but try to keep the rootspec from the template... sigh */ |
2426 | if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD)) { |
2427 | char * rootspec = getRootSpecifier(tmplLine->elements[1].item); |
2428 | if (rootspec != NULL) { |
2429 | free(newLine->elements[1].item); |
2430 | newLine->elements[1].item = |
2431 | sdupprintf("%s%s", rootspec, val); |
2432 | } |
2433 | } |
2434 | } |
2435 | |
2436 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? |
2437 | newLine->elements[0].item : ""); |
2438 | |
2439 | if (!entry->lines) { |
2440 | /* first one on the list */ |
2441 | entry->lines = newLine; |
2442 | } else if (prevLine) { |
2443 | /* add after prevLine */ |
2444 | newLine->next = prevLine->next; |
2445 | prevLine->next = newLine; |
2446 | } |
2447 | |
2448 | return newLine; |
2449 | } |
2450 | |
2451 | /* val may be NULL */ |
2452 | struct singleLine * addLine(struct singleEntry * entry, |
2453 | struct configFileInfo * cfi, |
2454 | enum lineType_e type, char * defaultIndent, |
2455 | const char * val) { |
2456 | struct singleLine * line, * prev; |
2457 | struct keywordTypes * kw; |
2458 | struct singleLine tmpl; |
2459 | |
2460 | /* NB: This function shouldn't allocate items on the heap, rather on the |
2461 | * stack since it calls addLineTmpl which will make copies. |
2462 | */ |
2463 | |
2464 | if (type == LT_TITLE && cfi->titleBracketed) { |
2465 | /* we're doing a bracketed title (zipl) */ |
2466 | tmpl.type = type; |
2467 | tmpl.numElements = 1; |
2468 | tmpl.elements = alloca(sizeof(*tmpl.elements)); |
2469 | tmpl.elements[0].item = alloca(strlen(val)+3); |
2470 | sprintf(tmpl.elements[0].item, "[%s]", val); |
2471 | tmpl.elements[0].indent = ""; |
2472 | val = NULL; |
2473 | } else if (type == LT_MENUENTRY) { |
2474 | char *lineend = "--class gnu-linux --class gnu --class os {"; |
2475 | if (!val) { |
2476 | fprintf(stderr, "Line type LT_MENUENTRY requires a value\n"); |
2477 | abort(); |
2478 | } |
2479 | kw = getKeywordByType(type, cfi); |
2480 | if (!kw) { |
2481 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2482 | abort(); |
2483 | } |
2484 | tmpl.indent = ""; |
2485 | tmpl.type = type; |
2486 | tmpl.numElements = 3; |
2487 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2488 | tmpl.elements[0].item = kw->key; |
2489 | tmpl.elements[0].indent = alloca(2); |
2490 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2491 | tmpl.elements[1].item = (char *)val; |
2492 | tmpl.elements[1].indent = alloca(2); |
2493 | sprintf(tmpl.elements[1].indent, "%c", kw->nextChar); |
2494 | tmpl.elements[2].item = alloca(strlen(lineend)+1); |
2495 | strcpy(tmpl.elements[2].item, lineend); |
2496 | tmpl.elements[2].indent = ""; |
2497 | } else { |
2498 | kw = getKeywordByType(type, cfi); |
2499 | if (!kw) { |
2500 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2501 | abort(); |
2502 | } |
2503 | tmpl.type = type; |
2504 | tmpl.numElements = val ? 2 : 1; |
2505 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2506 | tmpl.elements[0].item = kw->key; |
2507 | tmpl.elements[0].indent = alloca(2); |
2508 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2509 | if (val) { |
2510 | tmpl.elements[1].item = (char *)val; |
2511 | tmpl.elements[1].indent = ""; |
2512 | } |
2513 | } |
2514 | |
2515 | /* The last non-empty line gives us the indention to us and the line |
2516 | to insert after. Note that comments are considered empty lines, which |
2517 | may not be ideal? If there are no lines or we are looking at the |
2518 | first line, we use defaultIndent (the first line is normally indented |
2519 | differently from the rest) */ |
2520 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
2521 | if (line->numElements) prev = line; |
2522 | /* fall back on the last line if prev isn't otherwise set */ |
2523 | if (!line->next && !prev) prev = line; |
2524 | } |
2525 | |
2526 | struct singleLine *menuEntry; |
2527 | menuEntry = getLineByType(LT_MENUENTRY, entry->lines); |
2528 | if (tmpl.type == LT_ENTRY_END) { |
2529 | if (menuEntry) |
2530 | tmpl.indent = menuEntry->indent; |
2531 | else |
2532 | tmpl.indent = defaultIndent ?: ""; |
2533 | } else if (tmpl.type != LT_MENUENTRY) { |
2534 | if (menuEntry) |
2535 | tmpl.indent = "\t"; |
2536 | else if (prev == entry->lines) |
2537 | tmpl.indent = defaultIndent ?: ""; |
2538 | else |
2539 | tmpl.indent = prev->indent; |
2540 | } |
2541 | |
2542 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
2543 | } |
2544 | |
2545 | void removeLine(struct singleEntry * entry, struct singleLine * line) { |
2546 | struct singleLine * prev; |
2547 | int i; |
2548 | |
2549 | for (i = 0; i < line->numElements; i++) { |
2550 | free(line->elements[i].item); |
2551 | free(line->elements[i].indent); |
2552 | } |
2553 | free(line->elements); |
2554 | free(line->indent); |
2555 | |
2556 | if (line == entry->lines) { |
2557 | entry->lines = line->next; |
2558 | } else { |
2559 | prev = entry->lines; |
2560 | while (prev->next != line) prev = prev->next; |
2561 | prev->next = line->next; |
2562 | } |
2563 | |
2564 | free(line); |
2565 | } |
2566 | |
2567 | static void requote(struct singleLine *tmplLine, struct configFileInfo * cfi) |
2568 | { |
2569 | struct singleLine newLine = { |
2570 | .indent = tmplLine->indent, |
2571 | .type = tmplLine->type, |
2572 | .next = tmplLine->next, |
2573 | }; |
2574 | int firstQuotedItem = -1; |
2575 | int quoteLen = 0; |
2576 | int j; |
2577 | int element = 0; |
2578 | char *c; |
2579 | |
2580 | c = malloc(strlen(tmplLine->elements[0].item) + 1); |
2581 | strcpy(c, tmplLine->elements[0].item); |
2582 | insertElement(&newLine, c, element++, cfi); |
2583 | free(c); |
2584 | c = NULL; |
2585 | |
2586 | for (j = 1; j < tmplLine->numElements; j++) { |
2587 | if (firstQuotedItem == -1) { |
2588 | quoteLen += strlen(tmplLine->elements[j].item); |
2589 | |
2590 | if (isquote(tmplLine->elements[j].item[0])) { |
2591 | firstQuotedItem = j; |
2592 | quoteLen += strlen(tmplLine->elements[j].indent); |
2593 | } else { |
2594 | c = malloc(quoteLen + 1); |
2595 | strcpy(c, tmplLine->elements[j].item); |
2596 | insertElement(&newLine, c, element++, cfi); |
2597 | free(c); |
2598 | quoteLen = 0; |
2599 | } |
2600 | } else { |
2601 | int itemlen = strlen(tmplLine->elements[j].item); |
2602 | quoteLen += itemlen; |
2603 | quoteLen += strlen(tmplLine->elements[j].indent); |
2604 | |
2605 | if (isquote(tmplLine->elements[j].item[itemlen - 1])) { |
2606 | c = malloc(quoteLen + 1); |
2607 | c[0] = '\0'; |
2608 | for (int i = firstQuotedItem; i < j+1; i++) { |
2609 | strcat(c, tmplLine->elements[i].item); |
2610 | strcat(c, tmplLine->elements[i].indent); |
2611 | } |
2612 | insertElement(&newLine, c, element++, cfi); |
2613 | free(c); |
2614 | |
2615 | firstQuotedItem = -1; |
2616 | quoteLen = 0; |
2617 | } |
2618 | } |
2619 | } |
2620 | while (tmplLine->numElements) |
2621 | removeElement(tmplLine, 0); |
2622 | if (tmplLine->elements) |
2623 | free(tmplLine->elements); |
2624 | |
2625 | tmplLine->numElements = newLine.numElements; |
2626 | tmplLine->elements = newLine.elements; |
2627 | } |
2628 | |
2629 | static void insertElement(struct singleLine * line, |
2630 | const char * item, int insertHere, |
2631 | struct configFileInfo * cfi) |
2632 | { |
2633 | struct keywordTypes * kw; |
2634 | char indent[2] = ""; |
2635 | |
2636 | /* sanity check */ |
2637 | if (insertHere > line->numElements) { |
2638 | dbgPrintf("insertElement() adjusting insertHere from %d to %d\n", |
2639 | insertHere, line->numElements); |
2640 | insertHere = line->numElements; |
2641 | } |
2642 | |
2643 | line->elements = realloc(line->elements, (line->numElements + 1) * |
2644 | sizeof(*line->elements)); |
2645 | memmove(&line->elements[insertHere+1], |
2646 | &line->elements[insertHere], |
2647 | (line->numElements - insertHere) * |
2648 | sizeof(*line->elements)); |
2649 | line->elements[insertHere].item = strdup(item); |
2650 | |
2651 | kw = getKeywordByType(line->type, cfi); |
2652 | |
2653 | if (line->numElements == 0) { |
2654 | indent[0] = '\0'; |
2655 | } else if (insertHere == 0) { |
2656 | indent[0] = kw->nextChar; |
2657 | } else if (kw->separatorChar != '\0') { |
2658 | indent[0] = kw->separatorChar; |
2659 | } else { |
2660 | indent[0] = ' '; |
2661 | } |
2662 | |
2663 | if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') { |
2664 | /* move the end-of-line forward */ |
2665 | line->elements[insertHere].indent = |
2666 | line->elements[insertHere-1].indent; |
2667 | line->elements[insertHere-1].indent = strdup(indent); |
2668 | } else { |
2669 | line->elements[insertHere].indent = strdup(indent); |
2670 | } |
2671 | |
2672 | line->numElements++; |
2673 | |
2674 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", |
2675 | line->elements[0].item, |
2676 | line->elements[insertHere].item, |
2677 | line->elements[insertHere].indent, |
2678 | insertHere); |
2679 | } |
2680 | |
2681 | static void removeElement(struct singleLine * line, int removeHere) { |
2682 | int i; |
2683 | |
2684 | /* sanity check */ |
2685 | if (removeHere >= line->numElements) return; |
2686 | |
2687 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, |
2688 | removeHere, line->elements[removeHere].item); |
2689 | |
2690 | free(line->elements[removeHere].item); |
2691 | |
2692 | if (removeHere > 1) { |
2693 | /* previous argument gets this argument's post-indentation */ |
2694 | free(line->elements[removeHere-1].indent); |
2695 | line->elements[removeHere-1].indent = |
2696 | line->elements[removeHere].indent; |
2697 | } else { |
2698 | free(line->elements[removeHere].indent); |
2699 | } |
2700 | |
2701 | /* now collapse the array, but don't bother to realloc smaller */ |
2702 | for (i = removeHere; i < line->numElements - 1; i++) |
2703 | line->elements[i] = line->elements[i + 1]; |
2704 | |
2705 | line->numElements--; |
2706 | } |
2707 | |
2708 | int argMatch(const char * one, const char * two) { |
2709 | char * first, * second; |
2710 | char * chptr; |
2711 | |
2712 | first = strcpy(alloca(strlen(one) + 1), one); |
2713 | second = strcpy(alloca(strlen(two) + 1), two); |
2714 | |
2715 | chptr = strchr(first, '='); |
2716 | if (chptr) *chptr = '\0'; |
2717 | |
2718 | chptr = strchr(second, '='); |
2719 | if (chptr) *chptr = '\0'; |
2720 | |
2721 | return strcmp(first, second); |
2722 | } |
2723 | |
2724 | int updateActualImage(struct grubConfig * cfg, const char * image, |
2725 | const char * prefix, const char * addArgs, |
2726 | const char * removeArgs, int multibootArgs) { |
2727 | struct singleEntry * entry; |
2728 | struct singleLine * line, * rootLine; |
2729 | int index = 0; |
2730 | int i, k; |
2731 | const char ** newArgs, ** oldArgs; |
2732 | const char ** arg; |
2733 | int useKernelArgs, useRoot; |
2734 | int firstElement; |
2735 | int *usedElements; |
2736 | int doreplace; |
2737 | |
2738 | if (!image) return 0; |
2739 | |
2740 | if (!addArgs) { |
2741 | newArgs = malloc(sizeof(*newArgs)); |
2742 | *newArgs = NULL; |
2743 | } else { |
2744 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
2745 | fprintf(stderr, |
2746 | _("grubby: error separating arguments '%s'\n"), addArgs); |
2747 | return 1; |
2748 | } |
2749 | } |
2750 | |
2751 | if (!removeArgs) { |
2752 | oldArgs = malloc(sizeof(*oldArgs)); |
2753 | *oldArgs = NULL; |
2754 | } else { |
2755 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
2756 | fprintf(stderr, |
2757 | _("grubby: error separating arguments '%s'\n"), removeArgs); |
2758 | free(newArgs); |
2759 | return 1; |
2760 | } |
2761 | } |
2762 | |
2763 | |
2764 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
2765 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); |
2766 | |
2767 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
2768 | && !multibootArgs); |
2769 | |
2770 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
2771 | |
2772 | if (multibootArgs && !entry->multiboot) |
2773 | continue; |
2774 | |
2775 | /* Determine where to put the args. If this config supports |
2776 | * LT_KERNELARGS, use that. Otherwise use |
2777 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. |
2778 | */ |
2779 | if (useKernelArgs) { |
2780 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2781 | if (!line) { |
2782 | /* no LT_KERNELARGS, need to add it */ |
2783 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, |
2784 | cfg->secondaryIndent, NULL); |
2785 | } |
2786 | firstElement = 1; |
2787 | |
2788 | } else if (multibootArgs) { |
2789 | line = getLineByType(LT_HYPER, entry->lines); |
2790 | if (!line) { |
2791 | /* a multiboot entry without LT_HYPER? */ |
2792 | continue; |
2793 | } |
2794 | firstElement = 2; |
2795 | |
2796 | } else { |
2797 | line = getLineByType(LT_KERNEL|LT_MBMODULE, entry->lines); |
2798 | if (!line) { |
2799 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ |
2800 | continue; |
2801 | } |
2802 | firstElement = 2; |
2803 | } |
2804 | |
2805 | /* handle the elilo case which does: |
2806 | * append="hypervisor args -- kernel args" |
2807 | */ |
2808 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { |
2809 | /* this is a multiboot entry, make sure there's |
2810 | * -- on the args line |
2811 | */ |
2812 | for (i = firstElement; i < line->numElements; i++) { |
2813 | if (!strcmp(line->elements[i].item, "--")) |
2814 | break; |
2815 | } |
2816 | if (i == line->numElements) { |
2817 | /* assume all existing args are kernel args, |
2818 | * prepend -- to make it official |
2819 | */ |
2820 | insertElement(line, "--", firstElement, cfg->cfi); |
2821 | i = firstElement; |
2822 | } |
2823 | if (!multibootArgs) { |
2824 | /* kernel args start after the -- */ |
2825 | firstElement = i + 1; |
2826 | } |
2827 | } else if (cfg->cfi->mbConcatArgs) { |
2828 | /* this is a non-multiboot entry, remove hyper args */ |
2829 | for (i = firstElement; i < line->numElements; i++) { |
2830 | if (!strcmp(line->elements[i].item, "--")) |
2831 | break; |
2832 | } |
2833 | if (i < line->numElements) { |
2834 | /* remove args up to -- */ |
2835 | while (strcmp(line->elements[firstElement].item, "--")) |
2836 | removeElement(line, firstElement); |
2837 | /* remove -- */ |
2838 | removeElement(line, firstElement); |
2839 | } |
2840 | } |
2841 | |
2842 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
2843 | |
2844 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
2845 | |
2846 | doreplace = 1; |
2847 | for (i = firstElement; i < line->numElements; i++) { |
2848 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2849 | !strcmp(line->elements[i].item, "--")) |
2850 | { |
2851 | /* reached the end of hyper args, insert here */ |
2852 | doreplace = 0; |
2853 | break; |
2854 | } |
2855 | if (usedElements[i]) |
2856 | continue; |
2857 | if (!argMatch(line->elements[i].item, *arg)) { |
2858 | usedElements[i]=1; |
2859 | break; |
2860 | } |
2861 | } |
2862 | |
2863 | if (i < line->numElements && doreplace) { |
2864 | /* direct replacement */ |
2865 | free(line->elements[i].item); |
2866 | line->elements[i].item = strdup(*arg); |
2867 | |
2868 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
2869 | /* root= replacement */ |
2870 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2871 | if (rootLine) { |
2872 | free(rootLine->elements[1].item); |
2873 | rootLine->elements[1].item = strdup(*arg + 5); |
2874 | } else { |
2875 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, |
2876 | cfg->secondaryIndent, *arg + 5); |
2877 | } |
2878 | } |
2879 | |
2880 | else { |
2881 | /* insert/append */ |
2882 | insertElement(line, *arg, i, cfg->cfi); |
2883 | usedElements = realloc(usedElements, line->numElements * |
2884 | sizeof(*usedElements)); |
2885 | memmove(&usedElements[i + 1], &usedElements[i], |
2886 | line->numElements - i - 1); |
2887 | usedElements[i] = 1; |
2888 | |
2889 | /* if we updated a root= here even though there is a |
2890 | LT_ROOT available we need to remove the LT_ROOT entry |
2891 | (this will happen if we switch from a device to a label) */ |
2892 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
2893 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2894 | if (rootLine) |
2895 | removeLine(entry, rootLine); |
2896 | } |
2897 | } |
2898 | } |
2899 | |
2900 | free(usedElements); |
2901 | |
2902 | for (arg = oldArgs; *arg; arg++) { |
2903 | for (i = firstElement; i < line->numElements; i++) { |
2904 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2905 | !strcmp(line->elements[i].item, "--")) |
2906 | /* reached the end of hyper args, stop here */ |
2907 | break; |
2908 | if (!argMatch(line->elements[i].item, *arg)) { |
2909 | removeElement(line, i); |
2910 | break; |
2911 | } |
2912 | } |
2913 | /* handle removing LT_ROOT line too */ |
2914 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
2915 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2916 | if (rootLine) |
2917 | removeLine(entry, rootLine); |
2918 | } |
2919 | } |
2920 | |
2921 | if (line->numElements == 1) { |
2922 | /* don't need the line at all (note it has to be a |
2923 | LT_KERNELARGS for this to happen */ |
2924 | removeLine(entry, line); |
2925 | } |
2926 | } |
2927 | |
2928 | free(newArgs); |
2929 | free(oldArgs); |
2930 | |
2931 | return 0; |
2932 | } |
2933 | |
2934 | int updateImage(struct grubConfig * cfg, const char * image, |
2935 | const char * prefix, const char * addArgs, |
2936 | const char * removeArgs, |
2937 | const char * addMBArgs, const char * removeMBArgs) { |
2938 | int rc = 0; |
2939 | |
2940 | if (!image) return rc; |
2941 | |
2942 | /* update the main args first... */ |
2943 | if (addArgs || removeArgs) |
2944 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); |
2945 | if (rc) return rc; |
2946 | |
2947 | /* and now any multiboot args */ |
2948 | if (addMBArgs || removeMBArgs) |
2949 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); |
2950 | return rc; |
2951 | } |
2952 | |
2953 | int updateInitrd(struct grubConfig * cfg, const char * image, |
2954 | const char * prefix, const char * initrd) { |
2955 | struct singleEntry * entry; |
2956 | struct singleLine * line, * kernelLine, *endLine = NULL; |
2957 | int index = 0; |
2958 | |
2959 | if (!image) return 0; |
2960 | |
2961 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
2962 | kernelLine = getLineByType(LT_KERNEL, entry->lines); |
2963 | if (!kernelLine) continue; |
2964 | |
2965 | line = getLineByType(LT_INITRD, entry->lines); |
2966 | if (line) |
2967 | removeLine(entry, line); |
2968 | if (prefix) { |
2969 | int prefixLen = strlen(prefix); |
2970 | if (!strncmp(initrd, prefix, prefixLen)) |
2971 | initrd += prefixLen; |
2972 | } |
2973 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
2974 | if (endLine) |
2975 | removeLine(entry, endLine); |
2976 | line = addLine(entry, cfg->cfi, LT_INITRD, kernelLine->indent, initrd); |
2977 | if (!line) |
2978 | return 1; |
2979 | if (endLine) { |
2980 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
2981 | if (!line) |
2982 | return 1; |
2983 | } |
2984 | |
2985 | break; |
2986 | } |
2987 | |
2988 | return 0; |
2989 | } |
2990 | |
2991 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { |
2992 | int fd; |
2993 | unsigned char bootSect[512]; |
2994 | int offset; |
2995 | |
2996 | fd = open(device, O_RDONLY); |
2997 | if (fd < 0) { |
2998 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
2999 | device, strerror(errno)); |
3000 | return 1; |
3001 | } |
3002 | |
3003 | if (read(fd, bootSect, 512) != 512) { |
3004 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3005 | device, strerror(errno)); |
3006 | return 1; |
3007 | } |
3008 | close(fd); |
3009 | |
3010 | /* first three bytes should match, a jmp short should be in there */ |
3011 | if (memcmp(boot, bootSect, 3)) |
3012 | return 0; |
3013 | |
3014 | if (boot[1] == JMP_SHORT_OPCODE) { |
3015 | offset = boot[2] + 2; |
3016 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
3017 | offset = (boot[3] << 8) + boot[2] + 2; |
3018 | } else if (boot[0] == JMP_SHORT_OPCODE) { |
3019 | offset = boot[1] + 2; |
3020 | /* |
3021 | * it looks like grub, when copying stage1 into the mbr, patches stage1 |
3022 | * right after the JMP location, replacing other instructions such as |
3023 | * JMPs for NOOPs. So, relax the check a little bit by skipping those |
3024 | * different bytes. |
3025 | */ |
3026 | if ((bootSect[offset + 1] == NOOP_OPCODE) |
3027 | && (bootSect[offset + 2] == NOOP_OPCODE)) { |
3028 | offset = offset + 3; |
3029 | } |
3030 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
3031 | offset = (boot[2] << 8) + boot[1] + 2; |
3032 | } else { |
3033 | return 0; |
3034 | } |
3035 | |
3036 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
3037 | return 0; |
3038 | |
3039 | return 2; |
3040 | } |
3041 | |
3042 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { |
3043 | int fd; |
3044 | char buf[65536]; |
3045 | char * end; |
3046 | char * chptr; |
3047 | char * chptr2; |
3048 | int rc; |
3049 | |
3050 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
3051 | *raw* devices listed in there */ |
3052 | |
3053 | if (!strncmp(mdDev, "/dev/", 5)) |
3054 | mdDev += 5; |
3055 | |
3056 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
3057 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
3058 | strerror(errno)); |
3059 | return 2; |
3060 | } |
3061 | |
3062 | rc = read(fd, buf, sizeof(buf) - 1); |
3063 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
3064 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
3065 | strerror(errno)); |
3066 | close(fd); |
3067 | return 2; |
3068 | } |
3069 | close(fd); |
3070 | buf[rc] = '\0'; |
3071 | |
3072 | chptr = buf; |
3073 | while (*chptr) { |
3074 | end = strchr(chptr, '\n'); |
3075 | if (!end) break; |
3076 | *end = '\0'; |
3077 | |
3078 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
3079 | chptr[strlen(mdDev)] == ' ') { |
3080 | |
3081 | /* found the device */ |
3082 | while (*chptr && *chptr != ':') chptr++; |
3083 | chptr++; |
3084 | while (*chptr && isspace(*chptr)) chptr++; |
3085 | |
3086 | /* skip the "active" bit */ |
3087 | while (*chptr && !isspace(*chptr)) chptr++; |
3088 | while (*chptr && isspace(*chptr)) chptr++; |
3089 | |
3090 | /* skip the raid level */ |
3091 | while (*chptr && !isspace(*chptr)) chptr++; |
3092 | while (*chptr && isspace(*chptr)) chptr++; |
3093 | |
3094 | /* everything else is partition stuff */ |
3095 | while (*chptr) { |
3096 | chptr2 = chptr; |
3097 | while (*chptr2 && *chptr2 != '[') chptr2++; |
3098 | if (!*chptr2) break; |
3099 | |
3100 | /* yank off the numbers at the end */ |
3101 | chptr2--; |
3102 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; |
3103 | chptr2++; |
3104 | *chptr2 = '\0'; |
3105 | |
3106 | /* Better, now we need the /dev/ back. We're done with |
3107 | * everything before this point, so we can just put |
3108 | * the /dev/ part there. There will always be room. */ |
3109 | memcpy(chptr - 5, "/dev/", 5); |
3110 | rc = checkDeviceBootloader(chptr - 5, boot); |
3111 | if (rc != 2) { |
3112 | return rc; |
3113 | } |
3114 | |
3115 | chptr = chptr2 + 1; |
3116 | /* skip the [11] bit */ |
3117 | while (*chptr && !isspace(*chptr)) chptr++; |
3118 | /* and move to the next one */ |
3119 | while (*chptr && isspace(*chptr)) chptr++; |
3120 | } |
3121 | |
3122 | /* we're good to go */ |
3123 | return 2; |
3124 | } |
3125 | |
3126 | chptr = end + 1; |
3127 | } |
3128 | |
3129 | fprintf(stderr, |
3130 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
3131 | mdDev); |
3132 | return 0; |
3133 | } |
3134 | |
3135 | int checkForLilo(struct grubConfig * config) { |
3136 | int fd; |
3137 | unsigned char boot[512]; |
3138 | struct singleLine * line; |
3139 | |
3140 | for (line = config->theLines; line; line = line->next) |
3141 | if (line->type == LT_BOOT) break; |
3142 | |
3143 | if (!line) { |
3144 | fprintf(stderr, |
3145 | _("grubby: no boot line found in lilo configuration\n")); |
3146 | return 1; |
3147 | } |
3148 | |
3149 | if (line->numElements != 2) return 1; |
3150 | |
3151 | fd = open("/boot/boot.b", O_RDONLY); |
3152 | if (fd < 0) { |
3153 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3154 | "/boot/boot.b", strerror(errno)); |
3155 | return 1; |
3156 | } |
3157 | |
3158 | if (read(fd, boot, 512) != 512) { |
3159 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3160 | "/boot/boot.b", strerror(errno)); |
3161 | return 1; |
3162 | } |
3163 | close(fd); |
3164 | |
3165 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
3166 | return checkLiloOnRaid(line->elements[1].item, boot); |
3167 | |
3168 | return checkDeviceBootloader(line->elements[1].item, boot); |
3169 | } |
3170 | |
3171 | int checkForGrub2(struct grubConfig * config) { |
3172 | if (!access("/etc/grub.d/", R_OK)) |
3173 | return 2; |
3174 | |
3175 | return 1; |
3176 | } |
3177 | |
3178 | int checkForGrub(struct grubConfig * config) { |
3179 | int fd; |
3180 | unsigned char bootSect[512]; |
3181 | char * boot; |
3182 | int onSuse = isSuseSystem(); |
3183 | |
3184 | |
3185 | if (onSuse) { |
3186 | if (parseSuseGrubConf(NULL, &boot)) |
3187 | return 0; |
3188 | } else { |
3189 | if (parseSysconfigGrub(NULL, &boot)) |
3190 | return 0; |
3191 | } |
3192 | |
3193 | /* assume grub is not installed -- not an error condition */ |
3194 | if (!boot) |
3195 | return 0; |
3196 | |
3197 | fd = open("/boot/grub/stage1", O_RDONLY); |
3198 | if (fd < 0) |
3199 | /* this doesn't exist if grub hasn't been installed */ |
3200 | return 0; |
3201 | |
3202 | if (read(fd, bootSect, 512) != 512) { |
3203 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3204 | "/boot/grub/stage1", strerror(errno)); |
3205 | close(fd); |
3206 | return 1; |
3207 | } |
3208 | close(fd); |
3209 | |
3210 | /* The more elaborate checks do not work on SuSE. The checks done |
3211 | * seem to be reasonble (at least for now), so just return success |
3212 | */ |
3213 | if (onSuse) |
3214 | return 2; |
3215 | |
3216 | return checkDeviceBootloader(boot, bootSect); |
3217 | } |
3218 | |
3219 | int checkForExtLinux(struct grubConfig * config) { |
3220 | int fd; |
3221 | unsigned char bootSect[512]; |
3222 | char * boot; |
3223 | char executable[] = "/boot/extlinux/extlinux"; |
3224 | |
3225 | printf("entered: checkForExtLinux()\n"); |
3226 | |
3227 | if (parseSysconfigGrub(NULL, &boot)) |
3228 | return 0; |
3229 | |
3230 | /* assume grub is not installed -- not an error condition */ |
3231 | if (!boot) |
3232 | return 0; |
3233 | |
3234 | fd = open(executable, O_RDONLY); |
3235 | if (fd < 0) |
3236 | /* this doesn't exist if grub hasn't been installed */ |
3237 | return 0; |
3238 | |
3239 | if (read(fd, bootSect, 512) != 512) { |
3240 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3241 | executable, strerror(errno)); |
3242 | return 1; |
3243 | } |
3244 | close(fd); |
3245 | |
3246 | return checkDeviceBootloader(boot, bootSect); |
3247 | } |
3248 | |
3249 | int checkForYaboot(struct grubConfig * config) { |
3250 | /* |
3251 | * This is a simplistic check that we consider good enough for own puporses |
3252 | * |
3253 | * If we were to properly check if yaboot is *installed* we'd need to: |
3254 | * 1) get the system boot device (LT_BOOT) |
3255 | * 2) considering it's a raw filesystem, check if the yaboot binary matches |
3256 | * the content on the boot device |
3257 | * 3) if not, copy the binary to a temporary file and run "addnote" on it |
3258 | * 4) check again if binary and boot device contents match |
3259 | */ |
3260 | if (!access("/etc/yaboot.conf", R_OK)) |
3261 | return 2; |
3262 | |
3263 | return 1; |
3264 | } |
3265 | |
3266 | int checkForElilo(struct grubConfig * config) { |
3267 | if (!access("/etc/elilo.conf", R_OK)) |
3268 | return 2; |
3269 | |
3270 | return 1; |
3271 | } |
3272 | |
3273 | static char * getRootSpecifier(char * str) { |
3274 | char * idx, * rootspec = NULL; |
3275 | |
3276 | if (*str == '(') { |
3277 | idx = rootspec = strdup(str); |
3278 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; |
3279 | *(++idx) = '\0'; |
3280 | } |
3281 | return rootspec; |
3282 | } |
3283 | |
3284 | static char * getInitrdVal(struct grubConfig * config, |
3285 | const char * prefix, struct singleLine *tmplLine, |
3286 | const char * newKernelInitrd, |
3287 | const char ** extraInitrds, int extraInitrdCount) |
3288 | { |
3289 | char *initrdVal, *end; |
3290 | int i; |
3291 | size_t totalSize; |
3292 | size_t prefixLen; |
3293 | char separatorChar; |
3294 | |
3295 | prefixLen = strlen(prefix); |
3296 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */; |
3297 | |
3298 | for (i = 0; i < extraInitrdCount; i++) { |
3299 | totalSize += sizeof(separatorChar); |
3300 | totalSize += strlen(extraInitrds[i]) - prefixLen; |
3301 | } |
3302 | |
3303 | initrdVal = end = malloc(totalSize); |
3304 | |
3305 | end = stpcpy (end, newKernelInitrd + prefixLen); |
3306 | |
3307 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; |
3308 | for (i = 0; i < extraInitrdCount; i++) { |
3309 | const char *extraInitrd; |
3310 | int j; |
3311 | |
3312 | extraInitrd = extraInitrds[i] + prefixLen; |
3313 | /* Don't add entries that are already there */ |
3314 | if (tmplLine != NULL) { |
3315 | for (j = 2; j < tmplLine->numElements; j++) |
3316 | if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0) |
3317 | break; |
3318 | |
3319 | if (j != tmplLine->numElements) |
3320 | continue; |
3321 | } |
3322 | |
3323 | *end++ = separatorChar; |
3324 | end = stpcpy(end, extraInitrd); |
3325 | } |
3326 | |
3327 | return initrdVal; |
3328 | } |
3329 | |
3330 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, |
3331 | const char * prefix, |
3332 | const char * newKernelPath, const char * newKernelTitle, |
3333 | const char * newKernelArgs, const char * newKernelInitrd, |
3334 | const char ** extraInitrds, int extraInitrdCount, |
3335 | const char * newMBKernel, const char * newMBKernelArgs) { |
3336 | struct singleEntry * new; |
3337 | struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL; |
3338 | int needs; |
3339 | char * chptr; |
3340 | |
3341 | if (!newKernelPath) return 0; |
3342 | |
3343 | /* if the newKernelTitle is too long silently munge it into something |
3344 | * we can live with. truncating is first check, then we'll just mess with |
3345 | * it until it looks better */ |
3346 | if (config->cfi->maxTitleLength && |
3347 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
3348 | char * buf = alloca(config->cfi->maxTitleLength + 7); |
3349 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); |
3350 | int i = 1; |
3351 | |
3352 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); |
3353 | while (findEntryByPath(config, buf, NULL, NULL)) { |
3354 | sprintf(numBuf, "%d", i++); |
3355 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
3356 | } |
3357 | |
3358 | newKernelTitle = buf + 6; |
3359 | } |
3360 | |
3361 | new = malloc(sizeof(*new)); |
3362 | new->skip = 0; |
3363 | new->multiboot = 0; |
3364 | new->next = config->entries; |
3365 | new->lines = NULL; |
3366 | config->entries = new; |
3367 | |
3368 | /* copy/update from the template */ |
3369 | needs = NEED_KERNEL | NEED_TITLE; |
3370 | if (newKernelInitrd) |
3371 | needs |= NEED_INITRD; |
3372 | if (newMBKernel) { |
3373 | needs |= NEED_MB; |
3374 | new->multiboot = 1; |
3375 | } |
3376 | |
3377 | if (template) { |
3378 | for (masterLine = template->lines; |
3379 | masterLine && (tmplLine = lineDup(masterLine)); |
3380 | lineFree(tmplLine), masterLine = masterLine->next) |
3381 | { |
3382 | dbgPrintf("addNewKernel processing %d\n", tmplLine->type); |
3383 | |
3384 | /* skip comments */ |
3385 | chptr = tmplLine->indent; |
3386 | while (*chptr && isspace(*chptr)) chptr++; |
3387 | if (*chptr == '#') continue; |
3388 | |
3389 | if (tmplLine->type == LT_KERNEL && |
3390 | tmplLine->numElements >= 2) { |
3391 | if (!template->multiboot && (needs & NEED_MB)) { |
3392 | /* it's not a multiboot template and this is the kernel |
3393 | * line. Try to be intelligent about inserting the |
3394 | * hypervisor at the same time. |
3395 | */ |
3396 | if (config->cfi->mbHyperFirst) { |
3397 | /* insert the hypervisor first */ |
3398 | newLine = addLine(new, config->cfi, LT_HYPER, |
3399 | tmplLine->indent, |
3400 | newMBKernel + strlen(prefix)); |
3401 | /* set up for adding the kernel line */ |
3402 | free(tmplLine->indent); |
3403 | tmplLine->indent = strdup(config->secondaryIndent); |
3404 | needs &= ~NEED_MB; |
3405 | } |
3406 | if (needs & NEED_KERNEL) { |
3407 | /* use addLineTmpl to preserve line elements, |
3408 | * otherwise we could just call addLine. Unfortunately |
3409 | * this means making some changes to the template |
3410 | * such as the indent change above and the type |
3411 | * change below. |
3412 | */ |
3413 | struct keywordTypes * mbm_kw = |
3414 | getKeywordByType(LT_MBMODULE, config->cfi); |
3415 | if (mbm_kw) { |
3416 | tmplLine->type = LT_MBMODULE; |
3417 | free(tmplLine->elements[0].item); |
3418 | tmplLine->elements[0].item = strdup(mbm_kw->key); |
3419 | } |
3420 | newLine = addLineTmpl(new, tmplLine, newLine, |
3421 | newKernelPath + strlen(prefix), config->cfi); |
3422 | needs &= ~NEED_KERNEL; |
3423 | } |
3424 | if (needs & NEED_MB) { /* !mbHyperFirst */ |
3425 | newLine = addLine(new, config->cfi, LT_HYPER, |
3426 | config->secondaryIndent, |
3427 | newMBKernel + strlen(prefix)); |
3428 | needs &= ~NEED_MB; |
3429 | } |
3430 | } else if (needs & NEED_KERNEL) { |
3431 | newLine = addLineTmpl(new, tmplLine, newLine, |
3432 | newKernelPath + strlen(prefix), config->cfi); |
3433 | needs &= ~NEED_KERNEL; |
3434 | } |
3435 | |
3436 | } else if (tmplLine->type == LT_HYPER && |
3437 | tmplLine->numElements >= 2) { |
3438 | if (needs & NEED_MB) { |
3439 | newLine = addLineTmpl(new, tmplLine, newLine, |
3440 | newMBKernel + strlen(prefix), config->cfi); |
3441 | needs &= ~NEED_MB; |
3442 | } |
3443 | |
3444 | } else if (tmplLine->type == LT_MBMODULE && |
3445 | tmplLine->numElements >= 2) { |
3446 | if (new->multiboot) { |
3447 | if (needs & NEED_KERNEL) { |
3448 | newLine = addLineTmpl(new, tmplLine, newLine, |
3449 | newKernelPath + |
3450 | strlen(prefix), config->cfi); |
3451 | needs &= ~NEED_KERNEL; |
3452 | } else if (config->cfi->mbInitRdIsModule && |
3453 | (needs & NEED_INITRD)) { |
3454 | char *initrdVal; |
3455 | initrdVal = getInitrdVal(config, prefix, tmplLine, |
3456 | newKernelInitrd, extraInitrds, |
3457 | extraInitrdCount); |
3458 | newLine = addLineTmpl(new, tmplLine, newLine, |
3459 | initrdVal, config->cfi); |
3460 | free(initrdVal); |
3461 | needs &= ~NEED_INITRD; |
3462 | } |
3463 | } else if (needs & NEED_KERNEL) { |
3464 | /* template is multi but new is not, |
3465 | * insert the kernel in the first module slot |
3466 | */ |
3467 | tmplLine->type = LT_KERNEL; |
3468 | free(tmplLine->elements[0].item); |
3469 | tmplLine->elements[0].item = |
3470 | strdup(getKeywordByType(LT_KERNEL, config->cfi)->key); |
3471 | newLine = addLineTmpl(new, tmplLine, newLine, |
3472 | newKernelPath + strlen(prefix), config->cfi); |
3473 | needs &= ~NEED_KERNEL; |
3474 | } else if (needs & NEED_INITRD) { |
3475 | char *initrdVal; |
3476 | /* template is multi but new is not, |
3477 | * insert the initrd in the second module slot |
3478 | */ |
3479 | tmplLine->type = LT_INITRD; |
3480 | free(tmplLine->elements[0].item); |
3481 | tmplLine->elements[0].item = |
3482 | strdup(getKeywordByType(LT_INITRD, config->cfi)->key); |
3483 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3484 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3485 | free(initrdVal); |
3486 | needs &= ~NEED_INITRD; |
3487 | } |
3488 | |
3489 | } else if (tmplLine->type == LT_INITRD && |
3490 | tmplLine->numElements >= 2) { |
3491 | if (needs & NEED_INITRD && |
3492 | new->multiboot && !template->multiboot && |
3493 | config->cfi->mbInitRdIsModule) { |
3494 | /* make sure we don't insert the module initrd |
3495 | * before the module kernel... if we don't do it here, |
3496 | * it will be inserted following the template. |
3497 | */ |
3498 | if (!needs & NEED_KERNEL) { |
3499 | char *initrdVal; |
3500 | |
3501 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3502 | newLine = addLine(new, config->cfi, LT_MBMODULE, |
3503 | config->secondaryIndent, |
3504 | initrdVal); |
3505 | free(initrdVal); |
3506 | needs &= ~NEED_INITRD; |
3507 | } |
3508 | } else if (needs & NEED_INITRD) { |
3509 | char *initrdVal; |
3510 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3511 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3512 | free(initrdVal); |
3513 | needs &= ~NEED_INITRD; |
3514 | } |
3515 | |
3516 | } else if (tmplLine->type == LT_MENUENTRY && |
3517 | (needs & NEED_TITLE)) { |
3518 | requote(tmplLine, config->cfi); |
3519 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3520 | strcpy(nkt, "'"); |
3521 | strcat(nkt, newKernelTitle); |
3522 | strcat(nkt, "'"); |
3523 | newLine = addLineTmpl(new, tmplLine, newLine, nkt, config->cfi); |
3524 | free(nkt); |
3525 | needs &= ~NEED_TITLE; |
3526 | } else if (tmplLine->type == LT_TITLE && |
3527 | (needs & NEED_TITLE)) { |
3528 | if (tmplLine->numElements >= 2) { |
3529 | newLine = addLineTmpl(new, tmplLine, newLine, |
3530 | newKernelTitle, config->cfi); |
3531 | needs &= ~NEED_TITLE; |
3532 | } else if (tmplLine->numElements == 1 && |
3533 | config->cfi->titleBracketed) { |
3534 | /* addLineTmpl doesn't handle titleBracketed */ |
3535 | newLine = addLine(new, config->cfi, LT_TITLE, |
3536 | tmplLine->indent, newKernelTitle); |
3537 | needs &= ~NEED_TITLE; |
3538 | } |
3539 | } else if (tmplLine->type == LT_ECHO) { |
3540 | requote(tmplLine, config->cfi); |
3541 | static const char *prefix = "'Loading "; |
3542 | if (tmplLine->numElements > 1 && |
3543 | strstr(tmplLine->elements[1].item, prefix) && |
3544 | masterLine->next && masterLine->next->type == LT_KERNEL) { |
3545 | char *newTitle = malloc(strlen(prefix) + |
3546 | strlen(newKernelTitle) + 2); |
3547 | |
3548 | strcpy(newTitle, prefix); |
3549 | strcat(newTitle, newKernelTitle); |
3550 | strcat(newTitle, "'"); |
3551 | newLine = addLine(new, config->cfi, LT_ECHO, |
3552 | tmplLine->indent, newTitle); |
3553 | free(newTitle); |
3554 | } else { |
3555 | /* pass through other lines from the template */ |
3556 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, |
3557 | config->cfi); |
3558 | } |
3559 | } else { |
3560 | /* pass through other lines from the template */ |
3561 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); |
3562 | } |
3563 | } |
3564 | |
3565 | } else { |
3566 | /* don't have a template, so start the entry with the |
3567 | * appropriate starting line |
3568 | */ |
3569 | switch (config->cfi->entryStart) { |
3570 | case LT_KERNEL: |
3571 | if (new->multiboot && config->cfi->mbHyperFirst) { |
3572 | /* fall through to LT_HYPER */ |
3573 | } else { |
3574 | newLine = addLine(new, config->cfi, LT_KERNEL, |
3575 | config->primaryIndent, |
3576 | newKernelPath + strlen(prefix)); |
3577 | needs &= ~NEED_KERNEL; |
3578 | break; |
3579 | } |
3580 | |
3581 | case LT_HYPER: |
3582 | newLine = addLine(new, config->cfi, LT_HYPER, |
3583 | config->primaryIndent, |
3584 | newMBKernel + strlen(prefix)); |
3585 | needs &= ~NEED_MB; |
3586 | break; |
3587 | |
3588 | case LT_MENUENTRY: { |
3589 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3590 | strcpy(nkt, "'"); |
3591 | strcat(nkt, newKernelTitle); |
3592 | strcat(nkt, "'"); |
3593 | newLine = addLine(new, config->cfi, LT_MENUENTRY, |
3594 | config->primaryIndent, nkt); |
3595 | free(nkt); |
3596 | needs &= ~NEED_TITLE; |
3597 | needs |= NEED_END; |
3598 | break; |
3599 | } |
3600 | case LT_TITLE: |
3601 | if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above) |
3602 | char * templabel; |
3603 | int x = 0, y = 0; |
3604 | |
3605 | templabel = strdup(newKernelTitle); |
3606 | while( templabel[x]){ |
3607 | if( templabel[x] == ' ' ){ |
3608 | y = x; |
3609 | while( templabel[y] ){ |
3610 | templabel[y] = templabel[y+1]; |
3611 | y++; |
3612 | } |
3613 | } |
3614 | x++; |
3615 | } |
3616 | newLine = addLine(new, config->cfi, LT_TITLE, |
3617 | config->primaryIndent, templabel); |
3618 | free(templabel); |
3619 | }else{ |
3620 | newLine = addLine(new, config->cfi, LT_TITLE, |
3621 | config->primaryIndent, newKernelTitle); |
3622 | } |
3623 | needs &= ~NEED_TITLE; |
3624 | break; |
3625 | |
3626 | default: |
3627 | abort(); |
3628 | } |
3629 | } |
3630 | |
3631 | /* add the remainder of the lines, i.e. those that either |
3632 | * weren't present in the template, or in the case of no template, |
3633 | * all the lines following the entryStart. |
3634 | */ |
3635 | if (needs & NEED_TITLE) { |
3636 | newLine = addLine(new, config->cfi, LT_TITLE, |
3637 | config->secondaryIndent, |
3638 | newKernelTitle); |
3639 | needs &= ~NEED_TITLE; |
3640 | } |
3641 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
3642 | newLine = addLine(new, config->cfi, LT_HYPER, |
3643 | config->secondaryIndent, |
3644 | newMBKernel + strlen(prefix)); |
3645 | needs &= ~NEED_MB; |
3646 | } |
3647 | if (needs & NEED_KERNEL) { |
3648 | newLine = addLine(new, config->cfi, |
3649 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3650 | config->cfi)) ? |
3651 | LT_MBMODULE : LT_KERNEL, |
3652 | config->secondaryIndent, |
3653 | newKernelPath + strlen(prefix)); |
3654 | needs &= ~NEED_KERNEL; |
3655 | } |
3656 | if (needs & NEED_MB) { |
3657 | newLine = addLine(new, config->cfi, LT_HYPER, |
3658 | config->secondaryIndent, |
3659 | newMBKernel + strlen(prefix)); |
3660 | needs &= ~NEED_MB; |
3661 | } |
3662 | if (needs & NEED_INITRD) { |
3663 | char *initrdVal; |
3664 | initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount); |
3665 | newLine = addLine(new, config->cfi, |
3666 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3667 | config->cfi)) ? |
3668 | LT_MBMODULE : LT_INITRD, |
3669 | config->secondaryIndent, |
3670 | initrdVal); |
3671 | free(initrdVal); |
3672 | needs &= ~NEED_INITRD; |
3673 | } |
3674 | if (needs & NEED_END) { |
3675 | newLine = addLine(new, config->cfi, LT_ENTRY_END, |
3676 | config->secondaryIndent, NULL); |
3677 | needs &= ~NEED_END; |
3678 | } |
3679 | |
3680 | if (needs) { |
3681 | printf(_("grubby: needs=%d, aborting\n"), needs); |
3682 | abort(); |
3683 | } |
3684 | |
3685 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, |
3686 | newMBKernelArgs, NULL)) return 1; |
3687 | |
3688 | return 0; |
3689 | } |
3690 | |
3691 | static void traceback(int signum) |
3692 | { |
3693 | void *array[40]; |
3694 | size_t size; |
3695 | |
3696 | signal(SIGSEGV, SIG_DFL); |
3697 | memset(array, '\0', sizeof (array)); |
3698 | size = backtrace(array, 40); |
3699 | |
3700 | fprintf(stderr, "grubby recieved SIGSEGV! Backtrace (%ld):\n", |
3701 | (unsigned long)size); |
3702 | backtrace_symbols_fd(array, size, STDERR_FILENO); |
3703 | exit(1); |
3704 | } |
3705 | |
3706 | int main(int argc, const char ** argv) { |
3707 | poptContext optCon; |
3708 | const char * grubConfig = NULL; |
3709 | char * outputFile = NULL; |
3710 | int arg = 0; |
3711 | int flags = 0; |
3712 | int badImageOkay = 0; |
3713 | int configureGrub2 = 0; |
3714 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
3715 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
3716 | int configureExtLinux = 0; |
3717 | int bootloaderProbe = 0; |
3718 | int extraInitrdCount = 0; |
3719 | char * updateKernelPath = NULL; |
3720 | char * newKernelPath = NULL; |
3721 | char * removeKernelPath = NULL; |
3722 | char * newKernelArgs = NULL; |
3723 | char * newKernelInitrd = NULL; |
3724 | char * newKernelTitle = NULL; |
3725 | char * newKernelVersion = NULL; |
3726 | char * newMBKernel = NULL; |
3727 | char * newMBKernelArgs = NULL; |
3728 | char * removeMBKernelArgs = NULL; |
3729 | char * removeMBKernel = NULL; |
3730 | char * bootPrefix = NULL; |
3731 | char * defaultKernel = NULL; |
3732 | char * removeArgs = NULL; |
3733 | char * kernelInfo = NULL; |
3734 | char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
3735 | const char * chptr = NULL; |
3736 | struct configFileInfo * cfi = NULL; |
3737 | struct grubConfig * config; |
3738 | struct singleEntry * template = NULL; |
3739 | int copyDefault = 0, makeDefault = 0; |
3740 | int displayDefault = 0; |
3741 | int displayDefaultIndex = 0; |
3742 | int displayDefaultTitle = 0; |
3743 | struct poptOption options[] = { |
3744 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
3745 | _("add an entry for the specified kernel"), _("kernel-path") }, |
3746 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
3747 | _("add an entry for the specified multiboot kernel"), NULL }, |
3748 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
3749 | _("default arguments for the new kernel or new arguments for " |
3750 | "kernel being updated"), _("args") }, |
3751 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
3752 | _("default arguments for the new multiboot kernel or " |
3753 | "new arguments for multiboot kernel being updated"), NULL }, |
3754 | { "bad-image-okay", 0, 0, &badImageOkay, 0, |
3755 | _("don't sanity check images in boot entries (for testing only)"), |
3756 | NULL }, |
3757 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
3758 | _("filestystem which contains /boot directory (for testing only)"), |
3759 | _("bootfs") }, |
3760 | #if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__) |
3761 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
3762 | _("check which bootloader is installed on boot sector") }, |
3763 | #endif |
3764 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
3765 | _("path to grub config file to update (\"-\" for stdin)"), |
3766 | _("path") }, |
3767 | { "copy-default", 0, 0, ©Default, 0, |
3768 | _("use the default boot entry as a template for the new entry " |
3769 | "being added; if the default is not a linux image, or if " |
3770 | "the kernel referenced by the default image does not exist, " |
3771 | "the first linux entry whose kernel does exist is used as the " |
3772 | "template"), NULL }, |
3773 | { "debug", 0, 0, &debug, 0, |
3774 | _("print debugging information for failures") }, |
3775 | { "default-kernel", 0, 0, &displayDefault, 0, |
3776 | _("display the path of the default kernel") }, |
3777 | { "default-index", 0, 0, &displayDefaultIndex, 0, |
3778 | _("display the index of the default kernel") }, |
3779 | { "default-title", 0, 0, &displayDefaultTitle, 0, |
3780 | _("display the title of the default kernel") }, |
3781 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
3782 | _("configure elilo bootloader") }, |
3783 | { "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
3784 | _("configure extlinux bootloader (from syslinux)") }, |
3785 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
3786 | _("configure grub bootloader") }, |
3787 | { "grub2", 0, POPT_ARG_NONE, &configureGrub2, 0, |
3788 | _("configure grub2 bootloader") }, |
3789 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
3790 | _("display boot information for specified kernel"), |
3791 | _("kernel-path") }, |
3792 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
3793 | _("initrd image for the new kernel"), _("initrd-path") }, |
3794 | { "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
3795 | _("auxilliary initrd image for things other than the new kernel"), _("initrd-path") }, |
3796 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
3797 | _("configure lilo bootloader") }, |
3798 | { "make-default", 0, 0, &makeDefault, 0, |
3799 | _("make the newly added entry the default boot entry"), NULL }, |
3800 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
3801 | _("path to output updated config file (\"-\" for stdout)"), |
3802 | _("path") }, |
3803 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
3804 | _("remove kernel arguments"), NULL }, |
3805 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
3806 | _("remove multiboot kernel arguments"), NULL }, |
3807 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
3808 | _("remove all entries for the specified kernel"), |
3809 | _("kernel-path") }, |
3810 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
3811 | _("remove all entries for the specified multiboot kernel"), NULL }, |
3812 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
3813 | _("make the first entry referencing the specified kernel " |
3814 | "the default"), _("kernel-path") }, |
3815 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
3816 | _("configure silo bootloader") }, |
3817 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
3818 | _("title to use for the new kernel entry"), _("entry-title") }, |
3819 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
3820 | _("updated information for the specified kernel"), |
3821 | _("kernel-path") }, |
3822 | { "version", 'v', 0, NULL, 'v', |
3823 | _("print the version of this program and exit"), NULL }, |
3824 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
3825 | _("configure yaboot bootloader") }, |
3826 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
3827 | _("configure zipl bootloader") }, |
3828 | POPT_AUTOHELP |
3829 | { 0, 0, 0, 0, 0 } |
3830 | }; |
3831 | |
3832 | useextlinuxmenu=0; |
3833 | |
3834 | signal(SIGSEGV, traceback); |
3835 | |
3836 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
3837 | poptReadDefaultConfig(optCon, 1); |
3838 | |
3839 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
3840 | switch (arg) { |
3841 | case 'v': |
3842 | printf("grubby version %s\n", VERSION); |
3843 | exit(0); |
3844 | break; |
3845 | case 'i': |
3846 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { |
3847 | extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon)); |
3848 | } else { |
3849 | fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount); |
3850 | return 1; |
3851 | } |
3852 | break; |
3853 | } |
3854 | } |
3855 | |
3856 | if (arg < -1) { |
3857 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
3858 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
3859 | poptStrerror(arg)); |
3860 | return 1; |
3861 | } |
3862 | |
3863 | if ((chptr = poptGetArg(optCon))) { |
3864 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
3865 | return 1; |
3866 | } |
3867 | |
3868 | if ((configureLilo + configureGrub2 + configureGrub + configureELilo + |
3869 | configureYaboot + configureSilo + configureZipl + |
3870 | configureExtLinux ) > 1) { |
3871 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); |
3872 | return 1; |
3873 | } else if (bootloaderProbe && grubConfig) { |
3874 | fprintf(stderr, |
3875 | _("grubby: cannot specify config file with --bootloader-probe\n")); |
3876 | return 1; |
3877 | } else if (configureGrub2) { |
3878 | cfi = &grub2ConfigType; |
3879 | } else if (configureLilo) { |
3880 | cfi = &liloConfigType; |
3881 | } else if (configureGrub) { |
3882 | cfi = &grubConfigType; |
3883 | } else if (configureELilo) { |
3884 | cfi = &eliloConfigType; |
3885 | } else if (configureYaboot) { |
3886 | cfi = &yabootConfigType; |
3887 | } else if (configureSilo) { |
3888 | cfi = &siloConfigType; |
3889 | } else if (configureZipl) { |
3890 | cfi = &ziplConfigType; |
3891 | } else if (configureExtLinux) { |
3892 | cfi = &extlinuxConfigType; |
3893 | useextlinuxmenu=1; |
3894 | } |
3895 | |
3896 | if (!cfi) { |
3897 | if (grub2FindConfig(&grub2ConfigType)) |
3898 | cfi = &grub2ConfigType; |
3899 | else |
3900 | #ifdef __ia64__ |
3901 | cfi = &eliloConfigType; |
3902 | #elif __powerpc__ |
3903 | cfi = &yabootConfigType; |
3904 | #elif __sparc__ |
3905 | cfi = &siloConfigType; |
3906 | #elif __s390__ |
3907 | cfi = &ziplConfigType; |
3908 | #elif __s390x__ |
3909 | cfi = &ziplConfigtype; |
3910 | #else |
3911 | cfi = &grubConfigType; |
3912 | #endif |
3913 | } |
3914 | |
3915 | if (!grubConfig) { |
3916 | if (cfi->findConfig) |
3917 | grubConfig = cfi->findConfig(cfi); |
3918 | if (!grubConfig) |
3919 | grubConfig = cfi->defaultConfig; |
3920 | } |
3921 | |
3922 | if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion || |
3923 | newKernelPath || removeKernelPath || makeDefault || |
3924 | defaultKernel || displayDefaultIndex || displayDefaultTitle)) { |
3925 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " |
3926 | "specified option")); |
3927 | return 1; |
3928 | } |
3929 | |
3930 | if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath || |
3931 | removeKernelPath)) { |
3932 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
3933 | "be used when adding or removing kernels\n")); |
3934 | return 1; |
3935 | } |
3936 | |
3937 | if (newKernelPath && !newKernelTitle) { |
3938 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
3939 | return 1; |
3940 | } else if (!newKernelPath && (newKernelTitle || copyDefault || |
3941 | (newKernelInitrd && !updateKernelPath)|| |
3942 | makeDefault || extraInitrdCount > 0)) { |
3943 | fprintf(stderr, _("grubby: kernel path expected\n")); |
3944 | return 1; |
3945 | } |
3946 | |
3947 | if (newKernelPath && updateKernelPath) { |
3948 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
3949 | "not be used together")); |
3950 | return 1; |
3951 | } |
3952 | |
3953 | if (makeDefault && defaultKernel) { |
3954 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
3955 | "may not be used together\n")); |
3956 | return 1; |
3957 | } else if (defaultKernel && removeKernelPath && |
3958 | !strcmp(defaultKernel, removeKernelPath)) { |
3959 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); |
3960 | return 1; |
3961 | } else if (defaultKernel && newKernelPath && |
3962 | !strcmp(defaultKernel, newKernelPath)) { |
3963 | makeDefault = 1; |
3964 | defaultKernel = NULL; |
3965 | } |
3966 | |
3967 | if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) { |
3968 | fprintf(stderr, _("grubby: output file must be specified if stdin " |
3969 | "is used\n")); |
3970 | return 1; |
3971 | } |
3972 | |
3973 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel |
3974 | && !kernelInfo && !bootloaderProbe && !updateKernelPath |
3975 | && !removeMBKernel && !displayDefaultIndex && !displayDefaultTitle) { |
3976 | fprintf(stderr, _("grubby: no action specified\n")); |
3977 | return 1; |
3978 | } |
3979 | |
3980 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
3981 | |
3982 | if (cfi->needsBootPrefix) { |
3983 | if (!bootPrefix) { |
3984 | bootPrefix = findBootPrefix(); |
3985 | if (!bootPrefix) return 1; |
3986 | } else { |
3987 | /* this shouldn't end with a / */ |
3988 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
3989 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
3990 | } |
3991 | } else { |
3992 | bootPrefix = ""; |
3993 | } |
3994 | |
3995 | if (!cfi->mbAllowExtraInitRds && |
3996 | extraInitrdCount > 0) { |
3997 | fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig); |
3998 | return 1; |
3999 | } |
4000 | |
4001 | if (bootloaderProbe) { |
4002 | int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0; |
4003 | struct grubConfig * lconfig, * gconfig, * yconfig, * econfig; |
4004 | |
4005 | const char *grub2config = grub2FindConfig(&grub2ConfigType); |
4006 | if (grub2config) { |
4007 | gconfig = readConfig(grub2config, &grub2ConfigType); |
4008 | if (!gconfig) |
4009 | gr2c = 1; |
4010 | else |
4011 | gr2c = checkForGrub2(gconfig); |
4012 | } |
4013 | |
4014 | const char *grubconfig = grubFindConfig(&grubConfigType); |
4015 | if (!access(grubconfig, F_OK)) { |
4016 | gconfig = readConfig(grubconfig, &grubConfigType); |
4017 | if (!gconfig) |
4018 | grc = 1; |
4019 | else |
4020 | grc = checkForGrub(gconfig); |
4021 | } |
4022 | |
4023 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
4024 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); |
4025 | if (!lconfig) |
4026 | lrc = 1; |
4027 | else |
4028 | lrc = checkForLilo(lconfig); |
4029 | } |
4030 | |
4031 | if (!access(eliloConfigType.defaultConfig, F_OK)) { |
4032 | econfig = readConfig(eliloConfigType.defaultConfig, |
4033 | &eliloConfigType); |
4034 | if (!econfig) |
4035 | erc = 1; |
4036 | else |
4037 | erc = checkForElilo(econfig); |
4038 | } |
4039 | |
4040 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
4041 | lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType); |
4042 | if (!lconfig) |
4043 | extrc = 1; |
4044 | else |
4045 | extrc = checkForExtLinux(lconfig); |
4046 | } |
4047 | |
4048 | |
4049 | if (!access(yabootConfigType.defaultConfig, F_OK)) { |
4050 | yconfig = readConfig(yabootConfigType.defaultConfig, |
4051 | &yabootConfigType); |
4052 | if (!yconfig) |
4053 | yrc = 1; |
4054 | else |
4055 | yrc = checkForYaboot(lconfig); |
4056 | } |
4057 | |
4058 | if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1 || |
4059 | erc == 1) |
4060 | return 1; |
4061 | |
4062 | if (lrc == 2) printf("lilo\n"); |
4063 | if (gr2c == 2) printf("grub2\n"); |
4064 | if (grc == 2) printf("grub\n"); |
4065 | if (extrc == 2) printf("extlinux\n"); |
4066 | if (yrc == 2) printf("yaboot\n"); |
4067 | if (erc == 2) printf("elilo\n"); |
4068 | |
4069 | return 0; |
4070 | } |
4071 | |
4072 | config = readConfig(grubConfig, cfi); |
4073 | if (!config) return 1; |
4074 | |
4075 | if (displayDefault) { |
4076 | struct singleLine * line; |
4077 | struct singleEntry * entry; |
4078 | char * rootspec; |
4079 | |
4080 | if (config->defaultImage == -1) return 0; |
4081 | entry = findEntryByIndex(config, config->defaultImage); |
4082 | if (!entry) return 0; |
4083 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; |
4084 | |
4085 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
4086 | if (!line) return 0; |
4087 | |
4088 | rootspec = getRootSpecifier(line->elements[1].item); |
4089 | printf("%s%s\n", bootPrefix, line->elements[1].item + |
4090 | ((rootspec != NULL) ? strlen(rootspec) : 0)); |
4091 | |
4092 | return 0; |
4093 | |
4094 | } else if (displayDefaultTitle) { |
4095 | struct singleLine * line; |
4096 | struct singleEntry * entry; |
4097 | |
4098 | if (config->defaultImage == -1) return 0; |
4099 | entry = findEntryByIndex(config, config->defaultImage); |
4100 | if (!entry) return 0; |
4101 | |
4102 | if (!configureGrub2) { |
4103 | line = getLineByType(LT_TITLE, entry->lines); |
4104 | if (!line) return 0; |
4105 | printf("%s\n", line->elements[1].item); |
4106 | |
4107 | } else { |
4108 | char * title; |
4109 | |
4110 | dbgPrintf("This is GRUB2, default title is embeded in menuentry\n"); |
4111 | line = getLineByType(LT_MENUENTRY, entry->lines); |
4112 | if (!line) return 0; |
4113 | title = grub2ExtractTitle(line); |
4114 | if (title) |
4115 | printf("%s\n", title); |
4116 | } |
4117 | return 0; |
4118 | |
4119 | } else if (displayDefaultIndex) { |
4120 | if (config->defaultImage == -1) return 0; |
4121 | printf("%i\n", config->defaultImage); |
4122 | |
4123 | } else if (kernelInfo) |
4124 | return displayInfo(config, kernelInfo, bootPrefix); |
4125 | |
4126 | if (copyDefault) { |
4127 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
4128 | if (!template) return 1; |
4129 | } |
4130 | |
4131 | markRemovedImage(config, removeKernelPath, bootPrefix); |
4132 | markRemovedImage(config, removeMBKernel, bootPrefix); |
4133 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, |
4134 | bootPrefix, flags); |
4135 | setFallbackImage(config, newKernelPath != NULL); |
4136 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
4137 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; |
4138 | if (updateKernelPath && newKernelInitrd) { |
4139 | if (updateInitrd(config, updateKernelPath, bootPrefix, |
4140 | newKernelInitrd)) return 1; |
4141 | } |
4142 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
4143 | newKernelTitle, newKernelArgs, newKernelInitrd, |
4144 | (const char **)extraInitrds, extraInitrdCount, |
4145 | newMBKernel, newMBKernelArgs)) return 1; |
4146 | |
4147 | |
4148 | if (numEntries(config) == 0) { |
4149 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " |
4150 | "Not writing out new config.\n")); |
4151 | return 1; |
4152 | } |
4153 | |
4154 | if (!outputFile) |
4155 | outputFile = (char *)grubConfig; |
4156 | |
4157 | return writeConfig(config, outputFile, bootPrefix); |
4158 | } |