Contents of /tags/grubby-8_17/grubby.c
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Mon Oct 1 12:09:21 2012 UTC (11 years, 11 months ago) by niro
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Mon Oct 1 12:09:21 2012 UTC (11 years, 11 months ago) by niro
File MIME type: text/plain
File size: 116684 byte(s)
tagged 'grubby-8_17'
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 | { "linuxefi", LT_KERNEL, ' ' }, |
209 | { "initrd", LT_INITRD, ' ', ' ' }, |
210 | { "initrdefi", LT_INITRD, ' ', ' ' }, |
211 | { "module", LT_MBMODULE, ' ' }, |
212 | { "kernel", LT_HYPER, ' ' }, |
213 | { NULL, 0, 0 }, |
214 | }; |
215 | |
216 | const char *grub2FindConfig(struct configFileInfo *cfi) { |
217 | static const char *configFiles[] = { |
218 | "/boot/grub/grub-efi.cfg", |
219 | "/boot/grub/grub.cfg", |
220 | NULL |
221 | }; |
222 | static int i = -1; |
223 | static const char *grub_cfg = "/boot/grub/grub.cfg"; |
224 | |
225 | if (i == -1) { |
226 | for (i = 0; configFiles[i] != NULL; i++) { |
227 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
228 | if (!access(configFiles[i], R_OK)) { |
229 | dbgPrintf("found\n"); |
230 | return configFiles[i]; |
231 | } |
232 | } |
233 | } |
234 | |
235 | /* Ubuntu renames grub2 to grub, so check for the grub.d directory |
236 | * that isn't in grub1, and if it exists, return the config file path |
237 | * that they use. */ |
238 | if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) { |
239 | dbgPrintf("found\n"); |
240 | return grub_cfg; |
241 | } |
242 | |
243 | dbgPrintf("not found\n"); |
244 | return configFiles[i]; |
245 | } |
246 | |
247 | int sizeOfSingleLine(struct singleLine * line) { |
248 | int count = 0; |
249 | |
250 | for (int i = 0; i < line->numElements; i++) { |
251 | int indentSize = 0; |
252 | |
253 | count = count + strlen(line->elements[i].item); |
254 | |
255 | indentSize = strlen(line->elements[i].indent); |
256 | if (indentSize > 0) |
257 | count = count + indentSize; |
258 | else |
259 | /* be extra safe and add room for whitespaces */ |
260 | count = count + 1; |
261 | } |
262 | |
263 | /* room for trailing terminator */ |
264 | count = count + 1; |
265 | |
266 | return count; |
267 | } |
268 | |
269 | static int isquote(char q) |
270 | { |
271 | if (q == '\'' || q == '\"') |
272 | return 1; |
273 | return 0; |
274 | } |
275 | |
276 | char *grub2ExtractTitle(struct singleLine * line) { |
277 | char * current; |
278 | char * current_indent; |
279 | int current_len; |
280 | int current_indent_len; |
281 | int i; |
282 | |
283 | /* bail out if line does not start with menuentry */ |
284 | if (strcmp(line->elements[0].item, "menuentry")) |
285 | return NULL; |
286 | |
287 | i = 1; |
288 | current = line->elements[i].item; |
289 | current_len = strlen(current); |
290 | |
291 | /* if second word is quoted, strip the quotes and return single word */ |
292 | if (isquote(*current) && isquote(current[current_len - 1])) { |
293 | char *tmp; |
294 | |
295 | tmp = strdup(current); |
296 | *(tmp + current_len - 1) = '\0'; |
297 | return ++tmp; |
298 | } |
299 | |
300 | /* if no quotes, return second word verbatim */ |
301 | if (!isquote(*current)) |
302 | return current; |
303 | |
304 | /* second element start with a quote, so we have to find the element |
305 | * whose last character is also quote (assuming it's the closing one) */ |
306 | int resultMaxSize; |
307 | char * result; |
308 | |
309 | resultMaxSize = sizeOfSingleLine(line); |
310 | result = malloc(resultMaxSize); |
311 | snprintf(result, resultMaxSize, "%s", ++current); |
312 | |
313 | i++; |
314 | for (; i < line->numElements; ++i) { |
315 | current = line->elements[i].item; |
316 | current_len = strlen(current); |
317 | current_indent = line->elements[i].indent; |
318 | current_indent_len = strlen(current_indent); |
319 | |
320 | strncat(result, current_indent, current_indent_len); |
321 | if (!isquote(current[current_len-1])) { |
322 | strncat(result, current, current_len); |
323 | } else { |
324 | strncat(result, current, current_len - 1); |
325 | break; |
326 | } |
327 | } |
328 | return result; |
329 | } |
330 | |
331 | struct configFileInfo grub2ConfigType = { |
332 | .findConfig = grub2FindConfig, |
333 | .keywords = grub2Keywords, |
334 | .defaultIsIndex = 1, |
335 | .defaultSupportSaved = 1, |
336 | .defaultIsVariable = 1, |
337 | .entryStart = LT_MENUENTRY, |
338 | .entryEnd = LT_ENTRY_END, |
339 | .titlePosition = 1, |
340 | .needsBootPrefix = 1, |
341 | .mbHyperFirst = 1, |
342 | .mbInitRdIsModule = 1, |
343 | .mbAllowExtraInitRds = 1, |
344 | }; |
345 | |
346 | struct keywordTypes yabootKeywords[] = { |
347 | { "label", LT_TITLE, '=' }, |
348 | { "root", LT_ROOT, '=' }, |
349 | { "default", LT_DEFAULT, '=' }, |
350 | { "image", LT_KERNEL, '=' }, |
351 | { "bsd", LT_GENERIC, '=' }, |
352 | { "macos", LT_GENERIC, '=' }, |
353 | { "macosx", LT_GENERIC, '=' }, |
354 | { "magicboot", LT_GENERIC, '=' }, |
355 | { "darwin", LT_GENERIC, '=' }, |
356 | { "timeout", LT_GENERIC, '=' }, |
357 | { "install", LT_GENERIC, '=' }, |
358 | { "fstype", LT_GENERIC, '=' }, |
359 | { "hfstype", LT_GENERIC, '=' }, |
360 | { "delay", LT_GENERIC, '=' }, |
361 | { "defaultos", LT_GENERIC, '=' }, |
362 | { "init-message", LT_GENERIC, '=' }, |
363 | { "enablecdboot", LT_GENERIC, ' ' }, |
364 | { "enableofboot", LT_GENERIC, ' ' }, |
365 | { "enablenetboot", LT_GENERIC, ' ' }, |
366 | { "nonvram", LT_GENERIC, ' ' }, |
367 | { "hide", LT_GENERIC, ' ' }, |
368 | { "protect", LT_GENERIC, ' ' }, |
369 | { "nobless", LT_GENERIC, ' ' }, |
370 | { "nonvram", LT_GENERIC, ' ' }, |
371 | { "brokenosx", LT_GENERIC, ' ' }, |
372 | { "usemount", LT_GENERIC, ' ' }, |
373 | { "mntpoint", LT_GENERIC, '=' }, |
374 | { "partition", LT_GENERIC, '=' }, |
375 | { "device", LT_GENERIC, '=' }, |
376 | { "fstype", LT_GENERIC, '=' }, |
377 | { "initrd", LT_INITRD, '=', ';' }, |
378 | { "append", LT_KERNELARGS, '=' }, |
379 | { "boot", LT_BOOT, '=' }, |
380 | { "lba", LT_LBA, ' ' }, |
381 | { NULL, 0, 0 }, |
382 | }; |
383 | |
384 | struct keywordTypes liloKeywords[] = { |
385 | { "label", LT_TITLE, '=' }, |
386 | { "root", LT_ROOT, '=' }, |
387 | { "default", LT_DEFAULT, '=' }, |
388 | { "image", LT_KERNEL, '=' }, |
389 | { "other", LT_OTHER, '=' }, |
390 | { "initrd", LT_INITRD, '=' }, |
391 | { "append", LT_KERNELARGS, '=' }, |
392 | { "boot", LT_BOOT, '=' }, |
393 | { "lba", LT_LBA, ' ' }, |
394 | { NULL, 0, 0 }, |
395 | }; |
396 | |
397 | struct keywordTypes eliloKeywords[] = { |
398 | { "label", LT_TITLE, '=' }, |
399 | { "root", LT_ROOT, '=' }, |
400 | { "default", LT_DEFAULT, '=' }, |
401 | { "image", LT_KERNEL, '=' }, |
402 | { "initrd", LT_INITRD, '=' }, |
403 | { "append", LT_KERNELARGS, '=' }, |
404 | { "vmm", LT_HYPER, '=' }, |
405 | { NULL, 0, 0 }, |
406 | }; |
407 | |
408 | struct keywordTypes siloKeywords[] = { |
409 | { "label", LT_TITLE, '=' }, |
410 | { "root", LT_ROOT, '=' }, |
411 | { "default", LT_DEFAULT, '=' }, |
412 | { "image", LT_KERNEL, '=' }, |
413 | { "other", LT_OTHER, '=' }, |
414 | { "initrd", LT_INITRD, '=' }, |
415 | { "append", LT_KERNELARGS, '=' }, |
416 | { "boot", LT_BOOT, '=' }, |
417 | { NULL, 0, 0 }, |
418 | }; |
419 | |
420 | struct keywordTypes ziplKeywords[] = { |
421 | { "target", LT_BOOTROOT, '=' }, |
422 | { "image", LT_KERNEL, '=' }, |
423 | { "ramdisk", LT_INITRD, '=' }, |
424 | { "parameters", LT_KERNELARGS, '=' }, |
425 | { "default", LT_DEFAULT, '=' }, |
426 | { NULL, 0, 0 }, |
427 | }; |
428 | |
429 | struct keywordTypes extlinuxKeywords[] = { |
430 | { "label", LT_TITLE, ' ' }, |
431 | { "root", LT_ROOT, ' ' }, |
432 | { "default", LT_DEFAULT, ' ' }, |
433 | { "kernel", LT_KERNEL, ' ' }, |
434 | { "initrd", LT_INITRD, ' ', ',' }, |
435 | { "append", LT_KERNELARGS, ' ' }, |
436 | { "prompt", LT_UNKNOWN, ' ' }, |
437 | { NULL, 0, 0 }, |
438 | }; |
439 | int useextlinuxmenu; |
440 | struct configFileInfo eliloConfigType = { |
441 | .defaultConfig = "/boot/efi/EFI/redhat/elilo.conf", |
442 | .keywords = eliloKeywords, |
443 | .entryStart = LT_KERNEL, |
444 | .needsBootPrefix = 1, |
445 | .argsInQuotes = 1, |
446 | .mbConcatArgs = 1, |
447 | }; |
448 | |
449 | struct configFileInfo liloConfigType = { |
450 | .defaultConfig = "/etc/lilo.conf", |
451 | .keywords = liloKeywords, |
452 | .entryStart = LT_KERNEL, |
453 | .argsInQuotes = 1, |
454 | .maxTitleLength = 15, |
455 | }; |
456 | |
457 | struct configFileInfo yabootConfigType = { |
458 | .defaultConfig = "/etc/yaboot.conf", |
459 | .keywords = yabootKeywords, |
460 | .entryStart = LT_KERNEL, |
461 | .needsBootPrefix = 1, |
462 | .argsInQuotes = 1, |
463 | .maxTitleLength = 15, |
464 | .mbAllowExtraInitRds = 1, |
465 | }; |
466 | |
467 | struct configFileInfo siloConfigType = { |
468 | .defaultConfig = "/etc/silo.conf", |
469 | .keywords = siloKeywords, |
470 | .entryStart = LT_KERNEL, |
471 | .needsBootPrefix = 1, |
472 | .argsInQuotes = 1, |
473 | .maxTitleLength = 15, |
474 | }; |
475 | |
476 | struct configFileInfo ziplConfigType = { |
477 | .defaultConfig = "/etc/zipl.conf", |
478 | .keywords = ziplKeywords, |
479 | .entryStart = LT_TITLE, |
480 | .argsInQuotes = 1, |
481 | .titleBracketed = 1, |
482 | }; |
483 | |
484 | struct configFileInfo extlinuxConfigType = { |
485 | .defaultConfig = "/boot/extlinux/extlinux.conf", |
486 | .keywords = extlinuxKeywords, |
487 | .entryStart = LT_TITLE, |
488 | .needsBootPrefix = 1, |
489 | .maxTitleLength = 255, |
490 | .mbAllowExtraInitRds = 1, |
491 | }; |
492 | |
493 | struct grubConfig { |
494 | struct singleLine * theLines; |
495 | struct singleEntry * entries; |
496 | char * primaryIndent; |
497 | char * secondaryIndent; |
498 | int defaultImage; /* -1 if none specified -- this value is |
499 | * written out, overriding original */ |
500 | int fallbackImage; /* just like defaultImage */ |
501 | int flags; |
502 | struct configFileInfo * cfi; |
503 | }; |
504 | |
505 | blkid_cache blkid; |
506 | |
507 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); |
508 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, |
509 | const char * path, const char * prefix, |
510 | int * index); |
511 | static int readFile(int fd, char ** bufPtr); |
512 | static void lineInit(struct singleLine * line); |
513 | struct singleLine * lineDup(struct singleLine * line); |
514 | static void lineFree(struct singleLine * line); |
515 | static int lineWrite(FILE * out, struct singleLine * line, |
516 | struct configFileInfo * cfi); |
517 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
518 | struct configFileInfo * cfi); |
519 | static char * getRootSpecifier(char * str); |
520 | static void requote(struct singleLine *line, struct configFileInfo * cfi); |
521 | static void insertElement(struct singleLine * line, |
522 | const char * item, int insertHere, |
523 | struct configFileInfo * cfi); |
524 | static void removeElement(struct singleLine * line, int removeHere); |
525 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
526 | struct configFileInfo * cfi); |
527 | static enum lineType_e getTypeByKeyword(char * keyword, |
528 | struct configFileInfo * cfi); |
529 | static struct singleLine * getLineByType(enum lineType_e type, |
530 | struct singleLine * line); |
531 | static int checkForExtLinux(struct grubConfig * config); |
532 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
533 | struct singleLine * tmplLine, |
534 | struct singleLine * prevLine, |
535 | const char * val, |
536 | struct configFileInfo * cfi); |
537 | struct singleLine * addLine(struct singleEntry * entry, |
538 | struct configFileInfo * cfi, |
539 | enum lineType_e type, char * defaultIndent, |
540 | const char * val); |
541 | |
542 | static char * sdupprintf(const char *format, ...) |
543 | #ifdef __GNUC__ |
544 | __attribute__ ((format (printf, 1, 2))); |
545 | #else |
546 | ; |
547 | #endif |
548 | |
549 | static char * sdupprintf(const char *format, ...) { |
550 | char *buf = NULL; |
551 | char c; |
552 | va_list args; |
553 | size_t size = 0; |
554 | va_start(args, format); |
555 | |
556 | /* XXX requires C99 vsnprintf behavior */ |
557 | size = vsnprintf(&c, 1, format, args) + 1; |
558 | if (size == -1) { |
559 | printf("ERROR: vsnprintf behavior is not C99\n"); |
560 | abort(); |
561 | } |
562 | |
563 | va_end(args); |
564 | va_start(args, format); |
565 | |
566 | buf = malloc(size); |
567 | if (buf == NULL) |
568 | return NULL; |
569 | vsnprintf(buf, size, format, args); |
570 | va_end (args); |
571 | |
572 | return buf; |
573 | } |
574 | |
575 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
576 | struct configFileInfo * cfi) { |
577 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
578 | if (kw->type == type) |
579 | return kw; |
580 | } |
581 | return NULL; |
582 | } |
583 | |
584 | static char *getKeyByType(enum lineType_e type, struct configFileInfo * cfi) { |
585 | struct keywordTypes *kt = getKeywordByType(type, cfi); |
586 | if (kt) |
587 | return kt->key; |
588 | return "unknown"; |
589 | } |
590 | |
591 | static char * getpathbyspec(char *device) { |
592 | if (!blkid) |
593 | blkid_get_cache(&blkid, NULL); |
594 | |
595 | return blkid_get_devname(blkid, device, NULL); |
596 | } |
597 | |
598 | static char * getuuidbydev(char *device) { |
599 | if (!blkid) |
600 | blkid_get_cache(&blkid, NULL); |
601 | |
602 | return blkid_get_tag_value(blkid, "UUID", device); |
603 | } |
604 | |
605 | static enum lineType_e getTypeByKeyword(char * keyword, |
606 | struct configFileInfo * cfi) { |
607 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
608 | if (!strcmp(keyword, kw->key)) |
609 | return kw->type; |
610 | } |
611 | return LT_UNKNOWN; |
612 | } |
613 | |
614 | static struct singleLine * getLineByType(enum lineType_e type, |
615 | struct singleLine * line) { |
616 | dbgPrintf("getLineByType(%d): ", type); |
617 | for (; line; line = line->next) { |
618 | dbgPrintf("%d:%s ", line->type, |
619 | line->numElements ? line->elements[0].item : "(empty)"); |
620 | if (line->type & type) break; |
621 | } |
622 | dbgPrintf(line ? "\n" : " (failed)\n"); |
623 | return line; |
624 | } |
625 | |
626 | static int isBracketedTitle(struct singleLine * line) { |
627 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
628 | int len = strlen(line->elements[0].item); |
629 | if (*(line->elements[0].item + len - 1) == ']') { |
630 | /* FIXME: this is a hack... */ |
631 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
632 | return 1; |
633 | } |
634 | } |
635 | } |
636 | return 0; |
637 | } |
638 | |
639 | static int isEntryStart(struct singleLine * line, |
640 | struct configFileInfo * cfi) { |
641 | return line->type == cfi->entryStart || line->type == LT_OTHER || |
642 | (cfi->titleBracketed && isBracketedTitle(line)); |
643 | } |
644 | |
645 | /* extract the title from within brackets (for zipl) */ |
646 | static char * extractTitle(struct singleLine * line) { |
647 | /* bracketed title... let's extract it (leaks a byte) */ |
648 | char * title; |
649 | title = strdup(line->elements[0].item); |
650 | title++; |
651 | *(title + strlen(title) - 1) = '\0'; |
652 | return title; |
653 | } |
654 | |
655 | static int readFile(int fd, char ** bufPtr) { |
656 | int alloced = 0, size = 0, i = 0; |
657 | char * buf = NULL; |
658 | |
659 | do { |
660 | size += i; |
661 | if ((size + 1024) > alloced) { |
662 | alloced += 4096; |
663 | buf = realloc(buf, alloced + 1); |
664 | } |
665 | } while ((i = read(fd, buf + size, 1024)) > 0); |
666 | |
667 | if (i < 0) { |
668 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); |
669 | free(buf); |
670 | return 1; |
671 | } |
672 | |
673 | buf = realloc(buf, size + 2); |
674 | if (size == 0) |
675 | buf[size++] = '\n'; |
676 | else |
677 | if (buf[size - 1] != '\n') |
678 | buf[size++] = '\n'; |
679 | buf[size] = '\0'; |
680 | |
681 | *bufPtr = buf; |
682 | |
683 | return 0; |
684 | } |
685 | |
686 | static void lineInit(struct singleLine * line) { |
687 | line->indent = NULL; |
688 | line->elements = NULL; |
689 | line->numElements = 0; |
690 | line->next = NULL; |
691 | } |
692 | |
693 | struct singleLine * lineDup(struct singleLine * line) { |
694 | struct singleLine * newLine = malloc(sizeof(*newLine)); |
695 | |
696 | newLine->indent = strdup(line->indent); |
697 | newLine->next = NULL; |
698 | newLine->type = line->type; |
699 | newLine->numElements = line->numElements; |
700 | newLine->elements = malloc(sizeof(*newLine->elements) * |
701 | newLine->numElements); |
702 | |
703 | for (int i = 0; i < newLine->numElements; i++) { |
704 | newLine->elements[i].indent = strdup(line->elements[i].indent); |
705 | newLine->elements[i].item = strdup(line->elements[i].item); |
706 | } |
707 | |
708 | return newLine; |
709 | } |
710 | |
711 | static void lineFree(struct singleLine * line) { |
712 | if (line->indent) free(line->indent); |
713 | |
714 | for (int i = 0; i < line->numElements; i++) { |
715 | free(line->elements[i].item); |
716 | free(line->elements[i].indent); |
717 | } |
718 | |
719 | if (line->elements) free(line->elements); |
720 | lineInit(line); |
721 | } |
722 | |
723 | static int lineWrite(FILE * out, struct singleLine * line, |
724 | struct configFileInfo * cfi) { |
725 | if (fprintf(out, "%s", line->indent) == -1) return -1; |
726 | |
727 | for (int i = 0; i < line->numElements; i++) { |
728 | /* Need to handle this, because we strip the quotes from |
729 | * menuentry when read it. */ |
730 | if (line->type == LT_MENUENTRY && i == 1) { |
731 | if(!isquote(*line->elements[i].item)) |
732 | fprintf(out, "\'%s\'", line->elements[i].item); |
733 | else |
734 | fprintf(out, "%s", line->elements[i].item); |
735 | fprintf(out, "%s", line->elements[i].indent); |
736 | |
737 | continue; |
738 | } |
739 | |
740 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
741 | if (fputc('"', out) == EOF) return -1; |
742 | |
743 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; |
744 | if (i < line->numElements - 1) |
745 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; |
746 | } |
747 | |
748 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
749 | if (fputc('"', out) == EOF) return -1; |
750 | |
751 | if (fprintf(out, "\n") == -1) return -1; |
752 | |
753 | return 0; |
754 | } |
755 | |
756 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
757 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
758 | struct configFileInfo * cfi) { |
759 | char * end; |
760 | char * start = *bufPtr; |
761 | char * chptr; |
762 | int elementsAlloced = 0; |
763 | struct lineElement * element; |
764 | int first = 1; |
765 | |
766 | lineFree(line); |
767 | |
768 | end = strchr(start, '\n'); |
769 | *end = '\0'; |
770 | *bufPtr = end + 1; |
771 | |
772 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
773 | |
774 | line->indent = strndup(start, chptr - start); |
775 | start = chptr; |
776 | |
777 | while (start < end) { |
778 | /* we know !isspace(*start) */ |
779 | |
780 | if (elementsAlloced == line->numElements) { |
781 | elementsAlloced += 5; |
782 | line->elements = realloc(line->elements, |
783 | sizeof(*line->elements) * elementsAlloced); |
784 | } |
785 | |
786 | element = line->elements + line->numElements; |
787 | |
788 | chptr = start; |
789 | while (*chptr && !isspace(*chptr)) { |
790 | if (first && *chptr == '=') break; |
791 | chptr++; |
792 | } |
793 | element->item = strndup(start, chptr - start); |
794 | start = chptr; |
795 | |
796 | /* lilo actually accepts the pathological case of append = " foo " */ |
797 | if (*start == '=') |
798 | chptr = start + 1; |
799 | else |
800 | chptr = start; |
801 | |
802 | do { |
803 | for (; *chptr && isspace(*chptr); chptr++); |
804 | if (*chptr == '=') |
805 | chptr = chptr + 1; |
806 | } while (isspace(*chptr)); |
807 | |
808 | element->indent = strndup(start, chptr - start); |
809 | start = chptr; |
810 | |
811 | line->numElements++; |
812 | first = 0; |
813 | } |
814 | |
815 | if (!line->numElements) |
816 | line->type = LT_WHITESPACE; |
817 | else { |
818 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
819 | if (line->type == LT_UNKNOWN) { |
820 | /* zipl does [title] instead of something reasonable like all |
821 | * the other boot loaders. kind of ugly */ |
822 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
823 | line->type = LT_TITLE; |
824 | } |
825 | |
826 | /* this is awkward, but we need to be able to handle keywords |
827 | that begin with a # (specifically for #boot in grub.conf), |
828 | but still make comments lines with no elements (everything |
829 | stored in the indent */ |
830 | if (*line->elements[0].item == '#') { |
831 | char * fullLine; |
832 | int len; |
833 | |
834 | len = strlen(line->indent); |
835 | for (int i = 0; i < line->numElements; i++) |
836 | len += strlen(line->elements[i].item) + |
837 | strlen(line->elements[i].indent); |
838 | |
839 | fullLine = malloc(len + 1); |
840 | strcpy(fullLine, line->indent); |
841 | free(line->indent); |
842 | line->indent = fullLine; |
843 | |
844 | for (int i = 0; i < line->numElements; i++) { |
845 | strcat(fullLine, line->elements[i].item); |
846 | strcat(fullLine, line->elements[i].indent); |
847 | free(line->elements[i].item); |
848 | free(line->elements[i].indent); |
849 | } |
850 | |
851 | line->type = LT_WHITESPACE; |
852 | line->numElements = 0; |
853 | } |
854 | } else { |
855 | struct keywordTypes *kw; |
856 | |
857 | kw = getKeywordByType(line->type, cfi); |
858 | |
859 | /* space isn't the only separator, we need to split |
860 | * elements up more |
861 | */ |
862 | if (!isspace(kw->separatorChar)) { |
863 | char indent[2] = ""; |
864 | indent[0] = kw->separatorChar; |
865 | for (int i = 1; i < line->numElements; i++) { |
866 | char *p; |
867 | int numNewElements; |
868 | |
869 | numNewElements = 0; |
870 | p = line->elements[i].item; |
871 | while (*p != '\0') { |
872 | if (*p == kw->separatorChar) |
873 | numNewElements++; |
874 | p++; |
875 | } |
876 | if (line->numElements + numNewElements >= elementsAlloced) { |
877 | elementsAlloced += numNewElements + 5; |
878 | line->elements = realloc(line->elements, |
879 | sizeof(*line->elements) * elementsAlloced); |
880 | } |
881 | |
882 | for (int j = line->numElements; j > i; j--) { |
883 | line->elements[j + numNewElements] = line->elements[j]; |
884 | } |
885 | line->numElements += numNewElements; |
886 | |
887 | p = line->elements[i].item; |
888 | while (*p != '\0') { |
889 | |
890 | while (*p != kw->separatorChar && *p != '\0') p++; |
891 | if (*p == '\0') { |
892 | break; |
893 | } |
894 | |
895 | line->elements[i + 1].indent = line->elements[i].indent; |
896 | line->elements[i].indent = strdup(indent); |
897 | *p++ = '\0'; |
898 | i++; |
899 | line->elements[i].item = strdup(p); |
900 | } |
901 | } |
902 | } |
903 | } |
904 | } |
905 | |
906 | return 0; |
907 | } |
908 | |
909 | static struct grubConfig * readConfig(const char * inName, |
910 | struct configFileInfo * cfi) { |
911 | int in; |
912 | char * incoming = NULL, * head; |
913 | int rc; |
914 | int sawEntry = 0; |
915 | int movedLine = 0; |
916 | struct grubConfig * cfg; |
917 | struct singleLine * last = NULL, * line, * defaultLine = NULL; |
918 | char * end; |
919 | struct singleEntry * entry = NULL; |
920 | int len; |
921 | char * buf; |
922 | |
923 | if (!strcmp(inName, "-")) { |
924 | in = 0; |
925 | } else { |
926 | if ((in = open(inName, O_RDONLY)) < 0) { |
927 | fprintf(stderr, _("error opening %s for read: %s\n"), |
928 | inName, strerror(errno)); |
929 | return NULL; |
930 | } |
931 | } |
932 | |
933 | rc = readFile(in, &incoming); |
934 | close(in); |
935 | if (rc) return NULL; |
936 | |
937 | head = incoming; |
938 | cfg = malloc(sizeof(*cfg)); |
939 | cfg->primaryIndent = strdup(""); |
940 | cfg->secondaryIndent = strdup("\t"); |
941 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
942 | cfg->cfi = cfi; |
943 | cfg->theLines = NULL; |
944 | cfg->entries = NULL; |
945 | cfg->fallbackImage = 0; |
946 | |
947 | /* copy everything we have */ |
948 | while (*head) { |
949 | line = malloc(sizeof(*line)); |
950 | lineInit(line); |
951 | |
952 | if (getNextLine(&head, line, cfi)) { |
953 | free(line); |
954 | /* XXX memory leak of everything in cfg */ |
955 | return NULL; |
956 | } |
957 | |
958 | if (!sawEntry && line->numElements) { |
959 | free(cfg->primaryIndent); |
960 | cfg->primaryIndent = strdup(line->indent); |
961 | } else if (line->numElements) { |
962 | free(cfg->secondaryIndent); |
963 | cfg->secondaryIndent = strdup(line->indent); |
964 | } |
965 | |
966 | if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) { |
967 | sawEntry = 1; |
968 | if (!entry) { |
969 | cfg->entries = malloc(sizeof(*entry)); |
970 | entry = cfg->entries; |
971 | } else { |
972 | entry->next = malloc(sizeof(*entry)); |
973 | entry = entry->next; |
974 | } |
975 | |
976 | entry->skip = 0; |
977 | entry->multiboot = 0; |
978 | entry->lines = NULL; |
979 | entry->next = NULL; |
980 | } |
981 | |
982 | if (line->type == LT_SET_VARIABLE) { |
983 | dbgPrintf("found 'set' command (%d elements): ", line->numElements); |
984 | dbgPrintf("%s", line->indent); |
985 | for (int i = 0; i < line->numElements; i++) |
986 | dbgPrintf("\"%s\"%s", line->elements[i].item, line->elements[i].indent); |
987 | dbgPrintf("\n"); |
988 | struct keywordTypes *kwType = getKeywordByType(LT_DEFAULT, cfi); |
989 | if (kwType && line->numElements == 3 && |
990 | !strcmp(line->elements[1].item, kwType->key)) { |
991 | dbgPrintf("Line sets default config\n"); |
992 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
993 | defaultLine = line; |
994 | } |
995 | } else if (line->type == LT_DEFAULT && line->numElements == 2) { |
996 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
997 | defaultLine = line; |
998 | |
999 | } else if (line->type == LT_KERNEL) { |
1000 | /* if by some freak chance this is multiboot and the "module" |
1001 | * lines came earlier in the template, make sure to use LT_HYPER |
1002 | * instead of LT_KERNEL now |
1003 | */ |
1004 | if (entry->multiboot) |
1005 | line->type = LT_HYPER; |
1006 | |
1007 | } else if (line->type == LT_MBMODULE) { |
1008 | /* go back and fix the LT_KERNEL line to indicate LT_HYPER |
1009 | * instead, now that we know this is a multiboot entry. |
1010 | * This only applies to grub, but that's the only place we |
1011 | * should find LT_MBMODULE lines anyway. |
1012 | */ |
1013 | for (struct singleLine *l = entry->lines; l; l = l->next) { |
1014 | if (l->type == LT_HYPER) |
1015 | break; |
1016 | else if (l->type == LT_KERNEL) { |
1017 | l->type = LT_HYPER; |
1018 | break; |
1019 | } |
1020 | } |
1021 | entry->multiboot = 1; |
1022 | |
1023 | } else if (line->type == LT_HYPER) { |
1024 | entry->multiboot = 1; |
1025 | |
1026 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
1027 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); |
1028 | if (*end) cfg->fallbackImage = -1; |
1029 | |
1030 | } else if (line->type == LT_TITLE && line->numElements > 1) { |
1031 | /* make the title a single argument (undoing our parsing) */ |
1032 | len = 0; |
1033 | for (int i = 1; i < line->numElements; i++) { |
1034 | len += strlen(line->elements[i].item); |
1035 | len += strlen(line->elements[i].indent); |
1036 | } |
1037 | buf = malloc(len + 1); |
1038 | *buf = '\0'; |
1039 | |
1040 | for (int i = 1; i < line->numElements; i++) { |
1041 | strcat(buf, line->elements[i].item); |
1042 | free(line->elements[i].item); |
1043 | |
1044 | if ((i + 1) != line->numElements) { |
1045 | strcat(buf, line->elements[i].indent); |
1046 | free(line->elements[i].indent); |
1047 | } |
1048 | } |
1049 | |
1050 | line->elements[1].indent = |
1051 | line->elements[line->numElements - 1].indent; |
1052 | line->elements[1].item = buf; |
1053 | line->numElements = 2; |
1054 | } else if (line->type == LT_MENUENTRY && line->numElements > 3) { |
1055 | /* let --remove-kernel="TITLE=what" work */ |
1056 | len = 0; |
1057 | char *extras; |
1058 | char *title; |
1059 | |
1060 | for (int i = 1; i < line->numElements; i++) { |
1061 | len += strlen(line->elements[i].item); |
1062 | len += strlen(line->elements[i].indent); |
1063 | } |
1064 | buf = malloc(len + 1); |
1065 | *buf = '\0'; |
1066 | |
1067 | /* allocate mem for extra flags. */ |
1068 | extras = malloc(len + 1); |
1069 | *extras = '\0'; |
1070 | |
1071 | /* get title. */ |
1072 | for (int i = 0; i < line->numElements; i++) { |
1073 | if (!strcmp(line->elements[i].item, "menuentry")) |
1074 | continue; |
1075 | if (isquote(*line->elements[i].item)) |
1076 | title = line->elements[i].item + 1; |
1077 | else |
1078 | title = line->elements[i].item; |
1079 | |
1080 | len = strlen(title); |
1081 | if (isquote(title[len-1])) { |
1082 | strncat(buf, title,len-1); |
1083 | break; |
1084 | } else { |
1085 | strcat(buf, title); |
1086 | strcat(buf, line->elements[i].indent); |
1087 | } |
1088 | } |
1089 | |
1090 | /* get extras */ |
1091 | int count = 0; |
1092 | for (int i = 0; i < line->numElements; i++) { |
1093 | if (count >= 2) { |
1094 | strcat(extras, line->elements[i].item); |
1095 | strcat(extras, line->elements[i].indent); |
1096 | } |
1097 | |
1098 | if (!strcmp(line->elements[i].item, "menuentry")) |
1099 | continue; |
1100 | |
1101 | /* count ' or ", there should be two in menuentry line. */ |
1102 | if (isquote(*line->elements[i].item)) |
1103 | count++; |
1104 | |
1105 | len = strlen(line->elements[i].item); |
1106 | |
1107 | if (isquote(line->elements[i].item[len -1])) |
1108 | count++; |
1109 | |
1110 | /* ok, we get the final ' or ", others are extras. */ |
1111 | } |
1112 | line->elements[1].indent = |
1113 | line->elements[line->numElements - 2].indent; |
1114 | line->elements[1].item = buf; |
1115 | line->elements[2].indent = |
1116 | line->elements[line->numElements - 2].indent; |
1117 | line->elements[2].item = extras; |
1118 | line->numElements = 3; |
1119 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
1120 | /* Strip off any " which may be present; they'll be put back |
1121 | on write. This is one of the few (the only?) places that grubby |
1122 | canonicalizes the output */ |
1123 | |
1124 | if (line->numElements >= 2) { |
1125 | int last, len; |
1126 | |
1127 | if (isquote(*line->elements[1].item)) |
1128 | memmove(line->elements[1].item, line->elements[1].item + 1, |
1129 | strlen(line->elements[1].item + 1) + 1); |
1130 | |
1131 | last = line->numElements - 1; |
1132 | len = strlen(line->elements[last].item) - 1; |
1133 | if (isquote(line->elements[last].item[len])) |
1134 | line->elements[last].item[len] = '\0'; |
1135 | } |
1136 | } |
1137 | |
1138 | /* If we find a generic config option which should live at the |
1139 | top of the file, move it there. Old versions of grubby were |
1140 | probably responsible for putting new images in the wrong |
1141 | place in front of it anyway. */ |
1142 | if (sawEntry && line->type == LT_GENERIC) { |
1143 | struct singleLine **l = &cfg->theLines; |
1144 | struct singleLine **last_nonws = &cfg->theLines; |
1145 | while (*l) { |
1146 | if ((*l)->type != LT_WHITESPACE) |
1147 | last_nonws = &((*l)->next); |
1148 | l = &((*l)->next); |
1149 | } |
1150 | line->next = *last_nonws; |
1151 | *last_nonws = line; |
1152 | movedLine = 1; |
1153 | continue; /* without setting 'last' */ |
1154 | } |
1155 | |
1156 | /* If a second line of whitespace happens after a generic option |
1157 | which was moved, drop it. */ |
1158 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { |
1159 | lineFree(line); |
1160 | free(line); |
1161 | movedLine = 0; |
1162 | continue; |
1163 | } |
1164 | movedLine = 0; |
1165 | |
1166 | if (sawEntry) { |
1167 | if (!entry->lines) |
1168 | entry->lines = line; |
1169 | else |
1170 | last->next = line; |
1171 | dbgPrintf("readConfig added %s to %p\n", getKeyByType(line->type, cfi), entry); |
1172 | |
1173 | /* we could have seen this outside of an entry... if so, we |
1174 | * ignore it like any other line we don't grok */ |
1175 | if (line->type == LT_ENTRY_END && sawEntry) |
1176 | sawEntry = 0; |
1177 | } else { |
1178 | if (!cfg->theLines) |
1179 | cfg->theLines = line; |
1180 | else |
1181 | last->next = line; |
1182 | dbgPrintf("readConfig added %s to cfg\n", getKeyByType(line->type, cfi)); |
1183 | } |
1184 | |
1185 | last = line; |
1186 | } |
1187 | |
1188 | free(incoming); |
1189 | |
1190 | dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset"); |
1191 | if (defaultLine) { |
1192 | if (defaultLine->numElements > 2 && |
1193 | cfi->defaultSupportSaved && |
1194 | !strncmp(defaultLine->elements[2].item,"\"${saved_entry}\"", 16)) { |
1195 | cfg->defaultImage = DEFAULT_SAVED_GRUB2; |
1196 | } else if (cfi->defaultIsVariable) { |
1197 | char *value = defaultLine->elements[2].item; |
1198 | while (*value && (*value == '"' || *value == '\'' || |
1199 | *value == ' ' || *value == '\t')) |
1200 | value++; |
1201 | cfg->defaultImage = strtol(value, &end, 10); |
1202 | while (*end && (*end == '"' || *end == '\'' || |
1203 | *end == ' ' || *end == '\t')) |
1204 | end++; |
1205 | if (*end) cfg->defaultImage = -1; |
1206 | } else if (cfi->defaultSupportSaved && |
1207 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { |
1208 | cfg->defaultImage = DEFAULT_SAVED; |
1209 | } else if (cfi->defaultIsIndex) { |
1210 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); |
1211 | if (*end) cfg->defaultImage = -1; |
1212 | } else if (defaultLine->numElements >= 2) { |
1213 | int i = 0; |
1214 | while ((entry = findEntryByIndex(cfg, i))) { |
1215 | for (line = entry->lines; line; line = line->next) |
1216 | if (line->type == LT_TITLE) break; |
1217 | |
1218 | if (!cfi->titleBracketed) { |
1219 | if (line && (line->numElements >= 2) && |
1220 | !strcmp(defaultLine->elements[1].item, |
1221 | line->elements[1].item)) break; |
1222 | } else if (line) { |
1223 | if (!strcmp(defaultLine->elements[1].item, |
1224 | extractTitle(line))) break; |
1225 | } |
1226 | i++; |
1227 | entry = NULL; |
1228 | } |
1229 | |
1230 | if (entry){ |
1231 | cfg->defaultImage = i; |
1232 | }else{ |
1233 | cfg->defaultImage = -1; |
1234 | } |
1235 | } |
1236 | } else { |
1237 | cfg->defaultImage = 0; |
1238 | } |
1239 | |
1240 | return cfg; |
1241 | } |
1242 | |
1243 | static void writeDefault(FILE * out, char * indent, |
1244 | char * separator, struct grubConfig * cfg) { |
1245 | struct singleEntry * entry; |
1246 | struct singleLine * line; |
1247 | int i; |
1248 | |
1249 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; |
1250 | |
1251 | if (cfg->defaultImage == DEFAULT_SAVED) |
1252 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
1253 | else if (cfg->defaultImage == DEFAULT_SAVED_GRUB2) |
1254 | fprintf(out, "%sset default=\"${saved_entry}\"\n", indent); |
1255 | else if (cfg->defaultImage > -1) { |
1256 | if (cfg->cfi->defaultIsIndex) { |
1257 | if (cfg->cfi->defaultIsVariable) { |
1258 | fprintf(out, "%sset default=\"%d\"\n", indent, |
1259 | cfg->defaultImage); |
1260 | } else { |
1261 | fprintf(out, "%sdefault%s%d\n", indent, separator, |
1262 | cfg->defaultImage); |
1263 | } |
1264 | } else { |
1265 | int image = cfg->defaultImage; |
1266 | |
1267 | entry = cfg->entries; |
1268 | while (entry && entry->skip) entry = entry->next; |
1269 | |
1270 | i = 0; |
1271 | while (entry && i < image) { |
1272 | entry = entry->next; |
1273 | |
1274 | while (entry && entry->skip) entry = entry->next; |
1275 | i++; |
1276 | } |
1277 | |
1278 | if (!entry) return; |
1279 | |
1280 | line = getLineByType(LT_TITLE, entry->lines); |
1281 | |
1282 | if (line && line->numElements >= 2) |
1283 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1284 | line->elements[1].item); |
1285 | else if (line && (line->numElements == 1) && |
1286 | cfg->cfi->titleBracketed) { |
1287 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1288 | extractTitle(line)); |
1289 | } |
1290 | } |
1291 | } |
1292 | } |
1293 | |
1294 | static int writeConfig(struct grubConfig * cfg, char * outName, |
1295 | const char * prefix) { |
1296 | FILE * out; |
1297 | struct singleLine * line; |
1298 | struct singleEntry * entry; |
1299 | char * tmpOutName; |
1300 | int needs = MAIN_DEFAULT; |
1301 | struct stat sb; |
1302 | int i; |
1303 | |
1304 | if (!strcmp(outName, "-")) { |
1305 | out = stdout; |
1306 | tmpOutName = NULL; |
1307 | } else { |
1308 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
1309 | char * buf; |
1310 | int len = 256; |
1311 | int rc; |
1312 | |
1313 | /* most likely the symlink is relative, so change our |
1314 | directory to the dir of the symlink */ |
1315 | char *dir = strdupa(outName); |
1316 | rc = chdir(dirname(dir)); |
1317 | do { |
1318 | buf = alloca(len + 1); |
1319 | rc = readlink(basename(outName), buf, len); |
1320 | if (rc == len) len += 256; |
1321 | } while (rc == len); |
1322 | |
1323 | if (rc < 0) { |
1324 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), |
1325 | outName, strerror(errno)); |
1326 | return 1; |
1327 | } |
1328 | |
1329 | outName = buf; |
1330 | outName[rc] = '\0'; |
1331 | } |
1332 | |
1333 | tmpOutName = alloca(strlen(outName) + 2); |
1334 | sprintf(tmpOutName, "%s-", outName); |
1335 | out = fopen(tmpOutName, "w"); |
1336 | if (!out) { |
1337 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, |
1338 | strerror(errno)); |
1339 | return 1; |
1340 | } |
1341 | |
1342 | if (!stat(outName, &sb)) { |
1343 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
1344 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), |
1345 | tmpOutName, strerror(errno)); |
1346 | fclose(out); |
1347 | unlink(tmpOutName); |
1348 | return 1; |
1349 | } |
1350 | } |
1351 | } |
1352 | |
1353 | line = cfg->theLines; |
1354 | struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi); |
1355 | while (line) { |
1356 | if (line->type == LT_SET_VARIABLE && defaultKw && |
1357 | line->numElements == 3 && |
1358 | !strcmp(line->elements[1].item, defaultKw->key)) { |
1359 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1360 | needs &= ~MAIN_DEFAULT; |
1361 | } else if (line->type == LT_DEFAULT) { |
1362 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1363 | needs &= ~MAIN_DEFAULT; |
1364 | } else if (line->type == LT_FALLBACK) { |
1365 | if (cfg->fallbackImage > -1) |
1366 | fprintf(out, "%s%s%s%d\n", line->indent, |
1367 | line->elements[0].item, line->elements[0].indent, |
1368 | cfg->fallbackImage); |
1369 | } else { |
1370 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1371 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1372 | tmpOutName, strerror(errno)); |
1373 | fclose(out); |
1374 | unlink(tmpOutName); |
1375 | return 1; |
1376 | } |
1377 | } |
1378 | |
1379 | line = line->next; |
1380 | } |
1381 | |
1382 | if (needs & MAIN_DEFAULT) { |
1383 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
1384 | needs &= ~MAIN_DEFAULT; |
1385 | } |
1386 | |
1387 | i = 0; |
1388 | while ((entry = findEntryByIndex(cfg, i++))) { |
1389 | if (entry->skip) continue; |
1390 | |
1391 | line = entry->lines; |
1392 | while (line) { |
1393 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1394 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1395 | tmpOutName, strerror(errno)); |
1396 | fclose(out); |
1397 | unlink(tmpOutName); |
1398 | return 1; |
1399 | } |
1400 | line = line->next; |
1401 | } |
1402 | } |
1403 | |
1404 | if (tmpOutName) { |
1405 | if (rename(tmpOutName, outName)) { |
1406 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), |
1407 | tmpOutName, outName, strerror(errno)); |
1408 | unlink(outName); |
1409 | return 1; |
1410 | } |
1411 | } |
1412 | |
1413 | return 0; |
1414 | } |
1415 | |
1416 | static int numEntries(struct grubConfig *cfg) { |
1417 | int i = 0; |
1418 | struct singleEntry * entry; |
1419 | |
1420 | entry = cfg->entries; |
1421 | while (entry) { |
1422 | if (!entry->skip) |
1423 | i++; |
1424 | entry = entry->next; |
1425 | } |
1426 | return i; |
1427 | } |
1428 | |
1429 | static char *findDiskForRoot() |
1430 | { |
1431 | int fd; |
1432 | char buf[65536]; |
1433 | char *devname; |
1434 | char *chptr; |
1435 | int rc; |
1436 | |
1437 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { |
1438 | fprintf(stderr, "grubby: failed to open %s: %s\n", |
1439 | _PATH_MOUNTED, strerror(errno)); |
1440 | return NULL; |
1441 | } |
1442 | |
1443 | rc = read(fd, buf, sizeof(buf) - 1); |
1444 | if (rc <= 0) { |
1445 | fprintf(stderr, "grubby: failed to read %s: %s\n", |
1446 | _PATH_MOUNTED, strerror(errno)); |
1447 | close(fd); |
1448 | return NULL; |
1449 | } |
1450 | close(fd); |
1451 | buf[rc] = '\0'; |
1452 | chptr = buf; |
1453 | |
1454 | char *foundanswer = NULL; |
1455 | |
1456 | while (chptr && chptr != buf+rc) { |
1457 | devname = chptr; |
1458 | |
1459 | /* |
1460 | * The first column of a mtab entry is the device, but if the entry is a |
1461 | * special device it won't start with /, so move on to the next line. |
1462 | */ |
1463 | if (*devname != '/') { |
1464 | chptr = strchr(chptr, '\n'); |
1465 | if (chptr) |
1466 | chptr++; |
1467 | continue; |
1468 | } |
1469 | |
1470 | /* Seek to the next space */ |
1471 | chptr = strchr(chptr, ' '); |
1472 | if (!chptr) { |
1473 | fprintf(stderr, "grubby: error parsing %s: %s\n", |
1474 | _PATH_MOUNTED, strerror(errno)); |
1475 | return NULL; |
1476 | } |
1477 | |
1478 | /* |
1479 | * The second column of a mtab entry is the mount point, we are looking |
1480 | * for '/' obviously. |
1481 | */ |
1482 | if (*(++chptr) == '/' && *(++chptr) == ' ') { |
1483 | /* remember the last / entry in mtab */ |
1484 | foundanswer = devname; |
1485 | } |
1486 | |
1487 | /* Next line */ |
1488 | chptr = strchr(chptr, '\n'); |
1489 | if (chptr) |
1490 | chptr++; |
1491 | } |
1492 | |
1493 | /* Return the last / entry found */ |
1494 | if (foundanswer) { |
1495 | chptr = strchr(foundanswer, ' '); |
1496 | *chptr = '\0'; |
1497 | return strdup(foundanswer); |
1498 | } |
1499 | |
1500 | return NULL; |
1501 | } |
1502 | |
1503 | void printEntry(struct singleEntry * entry) { |
1504 | int i; |
1505 | struct singleLine * line; |
1506 | |
1507 | for (line = entry->lines; line; line = line->next) { |
1508 | fprintf(stderr, "DBG: %s", line->indent); |
1509 | for (i = 0; i < line->numElements; i++) { |
1510 | /* Need to handle this, because we strip the quotes from |
1511 | * menuentry when read it. */ |
1512 | if (line->type == LT_MENUENTRY && i == 1) { |
1513 | if(!isquote(*line->elements[i].item)) |
1514 | fprintf(stderr, "\'%s\'", line->elements[i].item); |
1515 | else |
1516 | fprintf(stderr, "%s", line->elements[i].item); |
1517 | fprintf(stderr, "%s", line->elements[i].indent); |
1518 | |
1519 | continue; |
1520 | } |
1521 | |
1522 | fprintf(stderr, "%s%s", |
1523 | line->elements[i].item, line->elements[i].indent); |
1524 | } |
1525 | fprintf(stderr, "\n"); |
1526 | } |
1527 | } |
1528 | |
1529 | void notSuitablePrintf(struct singleEntry * entry, const char *fmt, ...) |
1530 | { |
1531 | va_list argp; |
1532 | |
1533 | if (!debug) |
1534 | return; |
1535 | |
1536 | va_start(argp, fmt); |
1537 | fprintf(stderr, "DBG: Image entry failed: "); |
1538 | vfprintf(stderr, fmt, argp); |
1539 | printEntry(entry); |
1540 | va_end(argp); |
1541 | } |
1542 | |
1543 | #define beginswith(s, c) ((s) && (s)[0] == (c)) |
1544 | |
1545 | static int endswith(const char *s, char c) |
1546 | { |
1547 | int slen; |
1548 | |
1549 | if (!s || !s[0]) |
1550 | return 0; |
1551 | slen = strlen(s) - 1; |
1552 | |
1553 | return s[slen] == c; |
1554 | } |
1555 | |
1556 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, |
1557 | int skipRemoved, int flags) { |
1558 | struct singleLine * line; |
1559 | char * fullName; |
1560 | int i; |
1561 | char * dev; |
1562 | char * rootspec; |
1563 | char * rootdev; |
1564 | |
1565 | if (skipRemoved && entry->skip) { |
1566 | notSuitablePrintf(entry, "marked to skip\n"); |
1567 | return 0; |
1568 | } |
1569 | |
1570 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1571 | if (!line) { |
1572 | notSuitablePrintf(entry, "no line found\n"); |
1573 | return 0; |
1574 | } |
1575 | if (line->numElements < 2) { |
1576 | notSuitablePrintf(entry, "line has only %d elements\n", |
1577 | line->numElements); |
1578 | return 0; |
1579 | } |
1580 | |
1581 | if (flags & GRUBBY_BADIMAGE_OKAY) return 1; |
1582 | |
1583 | fullName = alloca(strlen(bootPrefix) + |
1584 | strlen(line->elements[1].item) + 1); |
1585 | rootspec = getRootSpecifier(line->elements[1].item); |
1586 | int rootspec_offset = rootspec ? strlen(rootspec) : 0; |
1587 | int hasslash = endswith(bootPrefix, '/') || |
1588 | beginswith(line->elements[1].item + rootspec_offset, '/'); |
1589 | sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/", |
1590 | line->elements[1].item + rootspec_offset); |
1591 | if (access(fullName, R_OK)) { |
1592 | notSuitablePrintf(entry, "access to %s failed\n", fullName); |
1593 | return 0; |
1594 | } |
1595 | for (i = 2; i < line->numElements; i++) |
1596 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1597 | if (i < line->numElements) { |
1598 | dev = line->elements[i].item + 5; |
1599 | } else { |
1600 | /* look for a lilo style LT_ROOT line */ |
1601 | line = getLineByType(LT_ROOT, entry->lines); |
1602 | |
1603 | if (line && line->numElements >= 2) { |
1604 | dev = line->elements[1].item; |
1605 | } else { |
1606 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS. |
1607 | * grub+multiboot uses LT_MBMODULE for the args, so check that too. |
1608 | */ |
1609 | line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines); |
1610 | |
1611 | /* failed to find one */ |
1612 | if (!line) { |
1613 | notSuitablePrintf(entry, "no line found\n"); |
1614 | return 0; |
1615 | } |
1616 | |
1617 | for (i = 1; i < line->numElements; i++) |
1618 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1619 | if (i < line->numElements) |
1620 | dev = line->elements[i].item + 5; |
1621 | else { |
1622 | notSuitablePrintf(entry, "no root= entry found\n"); |
1623 | /* it failed too... can't find root= */ |
1624 | return 0; |
1625 | } |
1626 | } |
1627 | } |
1628 | |
1629 | dev = getpathbyspec(dev); |
1630 | if (!getpathbyspec(dev)) { |
1631 | notSuitablePrintf(entry, "can't find blkid entry for %s\n", dev); |
1632 | return 0; |
1633 | } else |
1634 | dev = getpathbyspec(dev); |
1635 | |
1636 | rootdev = findDiskForRoot(); |
1637 | if (!rootdev) { |
1638 | notSuitablePrintf(entry, "can't find root device\n"); |
1639 | return 0; |
1640 | } |
1641 | |
1642 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
1643 | notSuitablePrintf(entry, "uuid missing: rootdev %s, dev %s\n", |
1644 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1645 | free(rootdev); |
1646 | return 0; |
1647 | } |
1648 | |
1649 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
1650 | notSuitablePrintf(entry, "uuid mismatch: rootdev %s, dev %s\n", |
1651 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1652 | free(rootdev); |
1653 | return 0; |
1654 | } |
1655 | |
1656 | free(rootdev); |
1657 | |
1658 | return 1; |
1659 | } |
1660 | |
1661 | /* returns the first match on or after the one pointed to by index (if index |
1662 | is not NULL) which is not marked as skip */ |
1663 | struct singleEntry * findEntryByPath(struct grubConfig * config, |
1664 | const char * kernel, const char * prefix, |
1665 | int * index) { |
1666 | struct singleEntry * entry = NULL; |
1667 | struct singleLine * line; |
1668 | int i; |
1669 | char * chptr; |
1670 | char * rootspec = NULL; |
1671 | enum lineType_e checkType = LT_KERNEL; |
1672 | |
1673 | if (isdigit(*kernel)) { |
1674 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
1675 | |
1676 | i = 0; |
1677 | indexVars[i] = strtol(kernel, &chptr, 10); |
1678 | while (*chptr == ',') { |
1679 | i++; |
1680 | kernel = chptr + 1; |
1681 | indexVars[i] = strtol(kernel, &chptr, 10); |
1682 | } |
1683 | |
1684 | if (*chptr) { |
1685 | /* can't parse it, bail */ |
1686 | return NULL; |
1687 | } |
1688 | |
1689 | indexVars[i + 1] = -1; |
1690 | |
1691 | i = 0; |
1692 | if (index) { |
1693 | while (i < *index) i++; |
1694 | if (indexVars[i] == -1) return NULL; |
1695 | } |
1696 | |
1697 | entry = findEntryByIndex(config, indexVars[i]); |
1698 | if (!entry) return NULL; |
1699 | |
1700 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1701 | if (!line) return NULL; |
1702 | |
1703 | if (index) *index = indexVars[i]; |
1704 | return entry; |
1705 | } |
1706 | |
1707 | if (!strcmp(kernel, "DEFAULT")) { |
1708 | if (index && *index > config->defaultImage) { |
1709 | entry = NULL; |
1710 | } else { |
1711 | entry = findEntryByIndex(config, config->defaultImage); |
1712 | if (entry && entry->skip) |
1713 | entry = NULL; |
1714 | else if (index) |
1715 | *index = config->defaultImage; |
1716 | } |
1717 | } else if (!strcmp(kernel, "ALL")) { |
1718 | if (index) |
1719 | i = *index; |
1720 | else |
1721 | i = 0; |
1722 | |
1723 | while ((entry = findEntryByIndex(config, i))) { |
1724 | if (!entry->skip) break; |
1725 | i++; |
1726 | } |
1727 | |
1728 | if (entry && index) |
1729 | *index = i; |
1730 | } else { |
1731 | if (index) |
1732 | i = *index; |
1733 | else |
1734 | i = 0; |
1735 | |
1736 | if (!strncmp(kernel, "TITLE=", 6)) { |
1737 | prefix = ""; |
1738 | checkType = LT_TITLE|LT_MENUENTRY; |
1739 | kernel += 6; |
1740 | } |
1741 | |
1742 | for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) { |
1743 | if (entry->skip) continue; |
1744 | |
1745 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry); |
1746 | |
1747 | /* check all the lines matching checkType */ |
1748 | for (line = entry->lines; line; line = line->next) { |
1749 | line = getLineByType(entry->multiboot && checkType == LT_KERNEL ? |
1750 | LT_KERNEL|LT_MBMODULE|LT_HYPER : |
1751 | checkType, line); |
1752 | if (!line) break; /* not found in this entry */ |
1753 | |
1754 | if (line && line->type != LT_MENUENTRY && |
1755 | line->numElements >= 2) { |
1756 | rootspec = getRootSpecifier(line->elements[1].item); |
1757 | if (!strcmp(line->elements[1].item + |
1758 | ((rootspec != NULL) ? strlen(rootspec) : 0), |
1759 | kernel + strlen(prefix))) |
1760 | break; |
1761 | } |
1762 | if(line->type == LT_MENUENTRY && |
1763 | !strcmp(line->elements[1].item, kernel)) |
1764 | break; |
1765 | } |
1766 | |
1767 | /* make sure this entry has a kernel identifier; this skips |
1768 | * non-Linux boot entries (could find netbsd etc, though, which is |
1769 | * unfortunate) |
1770 | */ |
1771 | if (line && getLineByType(LT_KERNEL|LT_HYPER, entry->lines)) |
1772 | break; /* found 'im! */ |
1773 | } |
1774 | |
1775 | if (index) *index = i; |
1776 | } |
1777 | |
1778 | return entry; |
1779 | } |
1780 | |
1781 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { |
1782 | struct singleEntry * entry; |
1783 | |
1784 | entry = cfg->entries; |
1785 | while (index && entry) { |
1786 | entry = entry->next; |
1787 | index--; |
1788 | } |
1789 | |
1790 | return entry; |
1791 | } |
1792 | |
1793 | /* Find a good template to use for the new kernel. An entry is |
1794 | * good if the kernel and mkinitrd exist (even if the entry |
1795 | * is going to be removed). Try and use the default entry, but |
1796 | * if that doesn't work just take the first. If we can't find one, |
1797 | * bail. */ |
1798 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, |
1799 | int * indexPtr, int skipRemoved, int flags) { |
1800 | struct singleEntry * entry, * entry2; |
1801 | int index; |
1802 | |
1803 | if (cfg->defaultImage > -1) { |
1804 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
1805 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
1806 | if (indexPtr) *indexPtr = cfg->defaultImage; |
1807 | return entry; |
1808 | } |
1809 | } |
1810 | |
1811 | index = 0; |
1812 | while ((entry = findEntryByIndex(cfg, index))) { |
1813 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
1814 | int j; |
1815 | for (j = 0; j < index; j++) { |
1816 | entry2 = findEntryByIndex(cfg, j); |
1817 | if (entry2->skip) index--; |
1818 | } |
1819 | if (indexPtr) *indexPtr = index; |
1820 | |
1821 | return entry; |
1822 | } |
1823 | |
1824 | index++; |
1825 | } |
1826 | |
1827 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); |
1828 | |
1829 | return NULL; |
1830 | } |
1831 | |
1832 | char * findBootPrefix(void) { |
1833 | struct stat sb, sb2; |
1834 | |
1835 | stat("/", &sb); |
1836 | #ifdef __ia64__ |
1837 | stat("/boot/efi/EFI/redhat/", &sb2); |
1838 | #else |
1839 | stat("/boot", &sb2); |
1840 | #endif |
1841 | |
1842 | if (sb.st_dev == sb2.st_dev) |
1843 | return strdup(""); |
1844 | |
1845 | #ifdef __ia64__ |
1846 | return strdup("/boot/efi/EFI/redhat/"); |
1847 | #else |
1848 | return strdup("/boot"); |
1849 | #endif |
1850 | } |
1851 | |
1852 | void markRemovedImage(struct grubConfig * cfg, const char * image, |
1853 | const char * prefix) { |
1854 | struct singleEntry * entry; |
1855 | |
1856 | if (!image) |
1857 | return; |
1858 | |
1859 | /* check and see if we're removing the default image */ |
1860 | if (isdigit(*image)) { |
1861 | entry = findEntryByPath(cfg, image, prefix, NULL); |
1862 | if(entry) |
1863 | entry->skip = 1; |
1864 | return; |
1865 | } |
1866 | |
1867 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
1868 | entry->skip = 1; |
1869 | } |
1870 | |
1871 | void setDefaultImage(struct grubConfig * config, int hasNew, |
1872 | const char * defaultKernelPath, int newIsDefault, |
1873 | const char * prefix, int flags, int index) { |
1874 | struct singleEntry * entry, * entry2, * newDefault; |
1875 | int i, j; |
1876 | |
1877 | if (newIsDefault) { |
1878 | config->defaultImage = 0; |
1879 | return; |
1880 | } else if ((index >= 0) && config->cfi->defaultIsIndex) { |
1881 | if (findEntryByIndex(config, index)) |
1882 | config->defaultImage = index; |
1883 | else |
1884 | config->defaultImage = -1; |
1885 | return; |
1886 | } else if (defaultKernelPath) { |
1887 | i = 0; |
1888 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { |
1889 | config->defaultImage = i; |
1890 | } else { |
1891 | config->defaultImage = -1; |
1892 | return; |
1893 | } |
1894 | } |
1895 | |
1896 | /* defaultImage now points to what we'd like to use, but before any order |
1897 | changes */ |
1898 | if ((config->defaultImage == DEFAULT_SAVED) || |
1899 | (config->defaultImage == DEFAULT_SAVED_GRUB2)) |
1900 | /* default is set to saved, we don't want to change it */ |
1901 | return; |
1902 | |
1903 | if (config->defaultImage > -1) |
1904 | entry = findEntryByIndex(config, config->defaultImage); |
1905 | else |
1906 | entry = NULL; |
1907 | |
1908 | if (entry && !entry->skip) { |
1909 | /* we can preserve the default */ |
1910 | if (hasNew) |
1911 | config->defaultImage++; |
1912 | |
1913 | /* count the number of entries erased before this one */ |
1914 | for (j = 0; j < config->defaultImage; j++) { |
1915 | entry2 = findEntryByIndex(config, j); |
1916 | if (entry2->skip) config->defaultImage--; |
1917 | } |
1918 | } else if (hasNew) { |
1919 | config->defaultImage = 0; |
1920 | } else { |
1921 | /* Either we just erased the default (or the default line was bad |
1922 | * to begin with) and didn't put a new one in. We'll use the first |
1923 | * valid image. */ |
1924 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, |
1925 | flags); |
1926 | if (!newDefault) |
1927 | config->defaultImage = -1; |
1928 | } |
1929 | } |
1930 | |
1931 | void setFallbackImage(struct grubConfig * config, int hasNew) { |
1932 | struct singleEntry * entry, * entry2; |
1933 | int j; |
1934 | |
1935 | if (config->fallbackImage == -1) return; |
1936 | |
1937 | entry = findEntryByIndex(config, config->fallbackImage); |
1938 | if (!entry || entry->skip) { |
1939 | config->fallbackImage = -1; |
1940 | return; |
1941 | } |
1942 | |
1943 | if (hasNew) |
1944 | config->fallbackImage++; |
1945 | |
1946 | /* count the number of entries erased before this one */ |
1947 | for (j = 0; j < config->fallbackImage; j++) { |
1948 | entry2 = findEntryByIndex(config, j); |
1949 | if (entry2->skip) config->fallbackImage--; |
1950 | } |
1951 | } |
1952 | |
1953 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { |
1954 | struct singleLine * line; |
1955 | char * root = NULL; |
1956 | int i; |
1957 | |
1958 | printf("index=%d\n", index); |
1959 | |
1960 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1961 | if (!line) { |
1962 | printf("non linux entry\n"); |
1963 | return; |
1964 | } |
1965 | |
1966 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
1967 | printf("kernel=%s\n", line->elements[1].item); |
1968 | else |
1969 | printf("kernel=%s%s\n", prefix, line->elements[1].item); |
1970 | |
1971 | if (line->numElements >= 3) { |
1972 | printf("args=\""); |
1973 | i = 2; |
1974 | while (i < line->numElements) { |
1975 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
1976 | root = line->elements[i].item + 5; |
1977 | } else { |
1978 | printf("%s%s", line->elements[i].item, |
1979 | line->elements[i].indent); |
1980 | } |
1981 | |
1982 | i++; |
1983 | } |
1984 | printf("\"\n"); |
1985 | } else { |
1986 | line = getLineByType(LT_KERNELARGS, entry->lines); |
1987 | if (line) { |
1988 | char * s; |
1989 | |
1990 | printf("args=\""); |
1991 | i = 1; |
1992 | while (i < line->numElements) { |
1993 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
1994 | root = line->elements[i].item + 5; |
1995 | } else { |
1996 | s = line->elements[i].item; |
1997 | |
1998 | printf("%s%s", s, line->elements[i].indent); |
1999 | } |
2000 | |
2001 | i++; |
2002 | } |
2003 | |
2004 | s = line->elements[i - 1].indent; |
2005 | printf("\"\n"); |
2006 | } |
2007 | } |
2008 | |
2009 | if (!root) { |
2010 | line = getLineByType(LT_ROOT, entry->lines); |
2011 | if (line && line->numElements >= 2) |
2012 | root=line->elements[1].item; |
2013 | } |
2014 | |
2015 | if (root) { |
2016 | char * s = alloca(strlen(root) + 1); |
2017 | |
2018 | strcpy(s, root); |
2019 | if (s[strlen(s) - 1] == '"') |
2020 | s[strlen(s) - 1] = '\0'; |
2021 | /* make sure the root doesn't have a trailing " */ |
2022 | printf("root=%s\n", s); |
2023 | } |
2024 | |
2025 | line = getLineByType(LT_INITRD, entry->lines); |
2026 | |
2027 | if (line && line->numElements >= 2) { |
2028 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2029 | printf("initrd="); |
2030 | else |
2031 | printf("initrd=%s", prefix); |
2032 | |
2033 | for (i = 1; i < line->numElements; i++) |
2034 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
2035 | printf("\n"); |
2036 | } |
2037 | |
2038 | line = getLineByType(LT_TITLE, entry->lines); |
2039 | if (line) { |
2040 | printf("title=%s\n", line->elements[1].item); |
2041 | } else { |
2042 | char * title; |
2043 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2044 | title = grub2ExtractTitle(line); |
2045 | if (title) |
2046 | printf("title=%s\n", title); |
2047 | } |
2048 | } |
2049 | |
2050 | int isSuseSystem(void) { |
2051 | const char * path; |
2052 | const static char default_path[] = "/etc/SuSE-release"; |
2053 | |
2054 | if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL) |
2055 | path = default_path; |
2056 | |
2057 | if (!access(path, R_OK)) |
2058 | return 1; |
2059 | return 0; |
2060 | } |
2061 | |
2062 | int isSuseGrubConf(const char * path) { |
2063 | FILE * grubConf; |
2064 | char * line = NULL; |
2065 | size_t len = 0, res = 0; |
2066 | |
2067 | grubConf = fopen(path, "r"); |
2068 | if (!grubConf) { |
2069 | dbgPrintf("Could not open SuSE configuration file '%s'\n", path); |
2070 | return 0; |
2071 | } |
2072 | |
2073 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2074 | if (!strncmp(line, "setup", 5)) { |
2075 | fclose(grubConf); |
2076 | free(line); |
2077 | return 1; |
2078 | } |
2079 | } |
2080 | |
2081 | dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n", |
2082 | path); |
2083 | |
2084 | fclose(grubConf); |
2085 | free(line); |
2086 | return 0; |
2087 | } |
2088 | |
2089 | int suseGrubConfGetLba(const char * path, int * lbaPtr) { |
2090 | FILE * grubConf; |
2091 | char * line = NULL; |
2092 | size_t res = 0, len = 0; |
2093 | |
2094 | if (!path) return 1; |
2095 | if (!lbaPtr) return 1; |
2096 | |
2097 | grubConf = fopen(path, "r"); |
2098 | if (!grubConf) return 1; |
2099 | |
2100 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2101 | if (line[res - 1] == '\n') |
2102 | line[res - 1] = '\0'; |
2103 | else if (len > res) |
2104 | line[res] = '\0'; |
2105 | else { |
2106 | line = realloc(line, res + 1); |
2107 | line[res] = '\0'; |
2108 | } |
2109 | |
2110 | if (!strncmp(line, "setup", 5)) { |
2111 | if (strstr(line, "--force-lba")) { |
2112 | *lbaPtr = 1; |
2113 | } else { |
2114 | *lbaPtr = 0; |
2115 | } |
2116 | dbgPrintf("lba: %i\n", *lbaPtr); |
2117 | break; |
2118 | } |
2119 | } |
2120 | |
2121 | free(line); |
2122 | fclose(grubConf); |
2123 | return 0; |
2124 | } |
2125 | |
2126 | int suseGrubConfGetInstallDevice(const char * path, char ** devicePtr) { |
2127 | FILE * grubConf; |
2128 | char * line = NULL; |
2129 | size_t res = 0, len = 0; |
2130 | char * lastParamPtr = NULL; |
2131 | char * secLastParamPtr = NULL; |
2132 | char installDeviceNumber = '\0'; |
2133 | char * bounds = NULL; |
2134 | |
2135 | if (!path) return 1; |
2136 | if (!devicePtr) return 1; |
2137 | |
2138 | grubConf = fopen(path, "r"); |
2139 | if (!grubConf) return 1; |
2140 | |
2141 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2142 | if (strncmp(line, "setup", 5)) |
2143 | continue; |
2144 | |
2145 | if (line[res - 1] == '\n') |
2146 | line[res - 1] = '\0'; |
2147 | else if (len > res) |
2148 | line[res] = '\0'; |
2149 | else { |
2150 | line = realloc(line, res + 1); |
2151 | line[res] = '\0'; |
2152 | } |
2153 | |
2154 | lastParamPtr = bounds = line + res; |
2155 | |
2156 | /* Last parameter in grub may be an optional IMAGE_DEVICE */ |
2157 | while (!isspace(*lastParamPtr)) |
2158 | lastParamPtr--; |
2159 | lastParamPtr++; |
2160 | |
2161 | secLastParamPtr = lastParamPtr - 2; |
2162 | dbgPrintf("lastParamPtr: %s\n", lastParamPtr); |
2163 | |
2164 | if (lastParamPtr + 3 > bounds) { |
2165 | dbgPrintf("lastParamPtr going over boundary"); |
2166 | fclose(grubConf); |
2167 | free(line); |
2168 | return 1; |
2169 | } |
2170 | if (!strncmp(lastParamPtr, "(hd", 3)) |
2171 | lastParamPtr += 3; |
2172 | dbgPrintf("lastParamPtr: %c\n", *lastParamPtr); |
2173 | |
2174 | /* |
2175 | * Second last parameter will decide wether last parameter is |
2176 | * an IMAGE_DEVICE or INSTALL_DEVICE |
2177 | */ |
2178 | while (!isspace(*secLastParamPtr)) |
2179 | secLastParamPtr--; |
2180 | secLastParamPtr++; |
2181 | |
2182 | if (secLastParamPtr + 3 > bounds) { |
2183 | dbgPrintf("secLastParamPtr going over boundary"); |
2184 | fclose(grubConf); |
2185 | free(line); |
2186 | return 1; |
2187 | } |
2188 | dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr); |
2189 | if (!strncmp(secLastParamPtr, "(hd", 3)) { |
2190 | secLastParamPtr += 3; |
2191 | dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr); |
2192 | installDeviceNumber = *secLastParamPtr; |
2193 | } else { |
2194 | installDeviceNumber = *lastParamPtr; |
2195 | } |
2196 | |
2197 | *devicePtr = malloc(6); |
2198 | snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber); |
2199 | dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber); |
2200 | fclose(grubConf); |
2201 | free(line); |
2202 | return 0; |
2203 | } |
2204 | |
2205 | free(line); |
2206 | fclose(grubConf); |
2207 | return 1; |
2208 | } |
2209 | |
2210 | int grubGetBootFromDeviceMap(const char * device, |
2211 | char ** bootPtr) { |
2212 | FILE * deviceMap; |
2213 | char * line = NULL; |
2214 | size_t res = 0, len = 0; |
2215 | char * devicePtr; |
2216 | char * bounds = NULL; |
2217 | const char * path; |
2218 | const static char default_path[] = "/boot/grub/device.map"; |
2219 | |
2220 | if (!device) return 1; |
2221 | if (!bootPtr) return 1; |
2222 | |
2223 | if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL) |
2224 | path = default_path; |
2225 | |
2226 | dbgPrintf("opening grub device.map file from: %s\n", path); |
2227 | deviceMap = fopen(path, "r"); |
2228 | if (!deviceMap) |
2229 | return 1; |
2230 | |
2231 | while ((res = getline(&line, &len, deviceMap)) != -1) { |
2232 | if (!strncmp(line, "#", 1)) |
2233 | continue; |
2234 | |
2235 | if (line[res - 1] == '\n') |
2236 | line[res - 1] = '\0'; |
2237 | else if (len > res) |
2238 | line[res] = '\0'; |
2239 | else { |
2240 | line = realloc(line, res + 1); |
2241 | line[res] = '\0'; |
2242 | } |
2243 | |
2244 | devicePtr = line; |
2245 | bounds = line + res; |
2246 | |
2247 | while ((isspace(*line) && ((devicePtr + 1) <= bounds))) |
2248 | devicePtr++; |
2249 | dbgPrintf("device: %s\n", devicePtr); |
2250 | |
2251 | if (!strncmp(devicePtr, device, strlen(device))) { |
2252 | devicePtr += strlen(device); |
2253 | while (isspace(*devicePtr) && ((devicePtr + 1) <= bounds)) |
2254 | devicePtr++; |
2255 | |
2256 | *bootPtr = strdup(devicePtr); |
2257 | break; |
2258 | } |
2259 | } |
2260 | |
2261 | free(line); |
2262 | fclose(deviceMap); |
2263 | return 0; |
2264 | } |
2265 | |
2266 | int suseGrubConfGetBoot(const char * path, char ** bootPtr) { |
2267 | char * grubDevice; |
2268 | |
2269 | if (suseGrubConfGetInstallDevice(path, &grubDevice)) |
2270 | dbgPrintf("error looking for grub installation device\n"); |
2271 | else |
2272 | dbgPrintf("grubby installation device: %s\n", grubDevice); |
2273 | |
2274 | if (grubGetBootFromDeviceMap(grubDevice, bootPtr)) |
2275 | dbgPrintf("error looking for grub boot device\n"); |
2276 | else |
2277 | dbgPrintf("grubby boot device: %s\n", *bootPtr); |
2278 | |
2279 | free(grubDevice); |
2280 | return 0; |
2281 | } |
2282 | |
2283 | int parseSuseGrubConf(int * lbaPtr, char ** bootPtr) { |
2284 | /* |
2285 | * This SuSE grub configuration file at this location is not your average |
2286 | * grub configuration file, but instead the grub commands used to setup |
2287 | * grub on that system. |
2288 | */ |
2289 | const char * path; |
2290 | const static char default_path[] = "/etc/grub.conf"; |
2291 | |
2292 | if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL) |
2293 | path = default_path; |
2294 | |
2295 | if (!isSuseGrubConf(path)) return 1; |
2296 | |
2297 | if (lbaPtr) { |
2298 | *lbaPtr = 0; |
2299 | if (suseGrubConfGetLba(path, lbaPtr)) |
2300 | return 1; |
2301 | } |
2302 | |
2303 | if (bootPtr) { |
2304 | *bootPtr = NULL; |
2305 | suseGrubConfGetBoot(path, bootPtr); |
2306 | } |
2307 | |
2308 | return 0; |
2309 | } |
2310 | |
2311 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { |
2312 | FILE * in; |
2313 | char buf[1024]; |
2314 | char * chptr; |
2315 | char * start; |
2316 | char * param; |
2317 | |
2318 | in = fopen("/etc/conf.d/grub", "r"); |
2319 | if (!in) return 1; |
2320 | |
2321 | if (lbaPtr) *lbaPtr = 0; |
2322 | if (bootPtr) *bootPtr = NULL; |
2323 | |
2324 | while (fgets(buf, sizeof(buf), in)) { |
2325 | start = buf; |
2326 | while (isspace(*start)) start++; |
2327 | if (*start == '#') continue; |
2328 | |
2329 | chptr = strchr(start, '='); |
2330 | if (!chptr) continue; |
2331 | chptr--; |
2332 | while (*chptr && isspace(*chptr)) chptr--; |
2333 | chptr++; |
2334 | *chptr = '\0'; |
2335 | |
2336 | param = chptr + 1; |
2337 | while (*param && isspace(*param)) param++; |
2338 | if (*param == '=') { |
2339 | param++; |
2340 | while (*param && isspace(*param)) param++; |
2341 | } |
2342 | |
2343 | chptr = param; |
2344 | while (*chptr && !isspace(*chptr)) chptr++; |
2345 | *chptr = '\0'; |
2346 | |
2347 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
2348 | *lbaPtr = 1; |
2349 | else if (!strcmp(start, "boot") && bootPtr) |
2350 | *bootPtr = strdup(param); |
2351 | } |
2352 | |
2353 | fclose(in); |
2354 | |
2355 | return 0; |
2356 | } |
2357 | |
2358 | void dumpSysconfigGrub(void) { |
2359 | char * boot = NULL; |
2360 | int lba; |
2361 | |
2362 | if (isSuseSystem()) { |
2363 | if (parseSuseGrubConf(&lba, &boot)) { |
2364 | free(boot); |
2365 | return; |
2366 | } |
2367 | } else { |
2368 | if (parseSysconfigGrub(&lba, &boot)) { |
2369 | free(boot); |
2370 | return; |
2371 | } |
2372 | } |
2373 | |
2374 | if (lba) printf("lba\n"); |
2375 | if (boot) { |
2376 | printf("boot=%s\n", boot); |
2377 | free(boot); |
2378 | } |
2379 | } |
2380 | |
2381 | int displayInfo(struct grubConfig * config, char * kernel, |
2382 | const char * prefix) { |
2383 | int i = 0; |
2384 | struct singleEntry * entry; |
2385 | struct singleLine * line; |
2386 | |
2387 | entry = findEntryByPath(config, kernel, prefix, &i); |
2388 | if (!entry) { |
2389 | fprintf(stderr, _("grubby: kernel not found\n")); |
2390 | return 1; |
2391 | } |
2392 | |
2393 | /* this is a horrible hack to support /etc/conf.d/grub; there must |
2394 | be a better way */ |
2395 | if (config->cfi == &grubConfigType) { |
2396 | dumpSysconfigGrub(); |
2397 | } else { |
2398 | line = getLineByType(LT_BOOT, config->theLines); |
2399 | if (line && line->numElements >= 1) { |
2400 | printf("boot=%s\n", line->elements[1].item); |
2401 | } |
2402 | |
2403 | line = getLineByType(LT_LBA, config->theLines); |
2404 | if (line) printf("lba\n"); |
2405 | } |
2406 | |
2407 | displayEntry(entry, prefix, i); |
2408 | |
2409 | i++; |
2410 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
2411 | displayEntry(entry, prefix, i); |
2412 | i++; |
2413 | } |
2414 | |
2415 | return 0; |
2416 | } |
2417 | |
2418 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
2419 | struct singleLine * tmplLine, |
2420 | struct singleLine * prevLine, |
2421 | const char * val, |
2422 | struct configFileInfo * cfi) |
2423 | { |
2424 | struct singleLine * newLine = lineDup(tmplLine); |
2425 | |
2426 | if (val) { |
2427 | /* override the inherited value with our own. |
2428 | * This is a little weak because it only applies to elements[1] |
2429 | */ |
2430 | if (newLine->numElements > 1) |
2431 | removeElement(newLine, 1); |
2432 | insertElement(newLine, val, 1, cfi); |
2433 | |
2434 | /* but try to keep the rootspec from the template... sigh */ |
2435 | if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD)) { |
2436 | char * rootspec = getRootSpecifier(tmplLine->elements[1].item); |
2437 | if (rootspec != NULL) { |
2438 | free(newLine->elements[1].item); |
2439 | newLine->elements[1].item = |
2440 | sdupprintf("%s%s", rootspec, val); |
2441 | } |
2442 | } |
2443 | } |
2444 | |
2445 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? |
2446 | newLine->elements[0].item : ""); |
2447 | |
2448 | if (!entry->lines) { |
2449 | /* first one on the list */ |
2450 | entry->lines = newLine; |
2451 | } else if (prevLine) { |
2452 | /* add after prevLine */ |
2453 | newLine->next = prevLine->next; |
2454 | prevLine->next = newLine; |
2455 | } |
2456 | |
2457 | return newLine; |
2458 | } |
2459 | |
2460 | /* val may be NULL */ |
2461 | struct singleLine * addLine(struct singleEntry * entry, |
2462 | struct configFileInfo * cfi, |
2463 | enum lineType_e type, char * defaultIndent, |
2464 | const char * val) { |
2465 | struct singleLine * line, * prev; |
2466 | struct keywordTypes * kw; |
2467 | struct singleLine tmpl; |
2468 | |
2469 | /* NB: This function shouldn't allocate items on the heap, rather on the |
2470 | * stack since it calls addLineTmpl which will make copies. |
2471 | */ |
2472 | |
2473 | if (type == LT_TITLE && cfi->titleBracketed) { |
2474 | /* we're doing a bracketed title (zipl) */ |
2475 | tmpl.type = type; |
2476 | tmpl.numElements = 1; |
2477 | tmpl.elements = alloca(sizeof(*tmpl.elements)); |
2478 | tmpl.elements[0].item = alloca(strlen(val)+3); |
2479 | sprintf(tmpl.elements[0].item, "[%s]", val); |
2480 | tmpl.elements[0].indent = ""; |
2481 | val = NULL; |
2482 | } else if (type == LT_MENUENTRY) { |
2483 | char *lineend = "--class gnu-linux --class gnu --class os {"; |
2484 | if (!val) { |
2485 | fprintf(stderr, "Line type LT_MENUENTRY requires a value\n"); |
2486 | abort(); |
2487 | } |
2488 | kw = getKeywordByType(type, cfi); |
2489 | if (!kw) { |
2490 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2491 | abort(); |
2492 | } |
2493 | tmpl.indent = ""; |
2494 | tmpl.type = type; |
2495 | tmpl.numElements = 3; |
2496 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2497 | tmpl.elements[0].item = kw->key; |
2498 | tmpl.elements[0].indent = alloca(2); |
2499 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2500 | tmpl.elements[1].item = (char *)val; |
2501 | tmpl.elements[1].indent = alloca(2); |
2502 | sprintf(tmpl.elements[1].indent, "%c", kw->nextChar); |
2503 | tmpl.elements[2].item = alloca(strlen(lineend)+1); |
2504 | strcpy(tmpl.elements[2].item, lineend); |
2505 | tmpl.elements[2].indent = ""; |
2506 | } else { |
2507 | kw = getKeywordByType(type, cfi); |
2508 | if (!kw) { |
2509 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2510 | abort(); |
2511 | } |
2512 | tmpl.type = type; |
2513 | tmpl.numElements = val ? 2 : 1; |
2514 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2515 | tmpl.elements[0].item = kw->key; |
2516 | tmpl.elements[0].indent = alloca(2); |
2517 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2518 | if (val) { |
2519 | tmpl.elements[1].item = (char *)val; |
2520 | tmpl.elements[1].indent = ""; |
2521 | } |
2522 | } |
2523 | |
2524 | /* The last non-empty line gives us the indention to us and the line |
2525 | to insert after. Note that comments are considered empty lines, which |
2526 | may not be ideal? If there are no lines or we are looking at the |
2527 | first line, we use defaultIndent (the first line is normally indented |
2528 | differently from the rest) */ |
2529 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
2530 | if (line->numElements) prev = line; |
2531 | /* fall back on the last line if prev isn't otherwise set */ |
2532 | if (!line->next && !prev) prev = line; |
2533 | } |
2534 | |
2535 | struct singleLine *menuEntry; |
2536 | menuEntry = getLineByType(LT_MENUENTRY, entry->lines); |
2537 | if (tmpl.type == LT_ENTRY_END) { |
2538 | if (menuEntry) |
2539 | tmpl.indent = menuEntry->indent; |
2540 | else |
2541 | tmpl.indent = defaultIndent ?: ""; |
2542 | } else if (tmpl.type != LT_MENUENTRY) { |
2543 | if (menuEntry) |
2544 | tmpl.indent = "\t"; |
2545 | else if (prev == entry->lines) |
2546 | tmpl.indent = defaultIndent ?: ""; |
2547 | else |
2548 | tmpl.indent = prev->indent; |
2549 | } |
2550 | |
2551 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
2552 | } |
2553 | |
2554 | void removeLine(struct singleEntry * entry, struct singleLine * line) { |
2555 | struct singleLine * prev; |
2556 | int i; |
2557 | |
2558 | for (i = 0; i < line->numElements; i++) { |
2559 | free(line->elements[i].item); |
2560 | free(line->elements[i].indent); |
2561 | } |
2562 | free(line->elements); |
2563 | free(line->indent); |
2564 | |
2565 | if (line == entry->lines) { |
2566 | entry->lines = line->next; |
2567 | } else { |
2568 | prev = entry->lines; |
2569 | while (prev->next != line) prev = prev->next; |
2570 | prev->next = line->next; |
2571 | } |
2572 | |
2573 | free(line); |
2574 | } |
2575 | |
2576 | static void requote(struct singleLine *tmplLine, struct configFileInfo * cfi) |
2577 | { |
2578 | struct singleLine newLine = { |
2579 | .indent = tmplLine->indent, |
2580 | .type = tmplLine->type, |
2581 | .next = tmplLine->next, |
2582 | }; |
2583 | int firstQuotedItem = -1; |
2584 | int quoteLen = 0; |
2585 | int j; |
2586 | int element = 0; |
2587 | char *c; |
2588 | |
2589 | c = malloc(strlen(tmplLine->elements[0].item) + 1); |
2590 | strcpy(c, tmplLine->elements[0].item); |
2591 | insertElement(&newLine, c, element++, cfi); |
2592 | free(c); |
2593 | c = NULL; |
2594 | |
2595 | for (j = 1; j < tmplLine->numElements; j++) { |
2596 | if (firstQuotedItem == -1) { |
2597 | quoteLen += strlen(tmplLine->elements[j].item); |
2598 | |
2599 | if (isquote(tmplLine->elements[j].item[0])) { |
2600 | firstQuotedItem = j; |
2601 | quoteLen += strlen(tmplLine->elements[j].indent); |
2602 | } else { |
2603 | c = malloc(quoteLen + 1); |
2604 | strcpy(c, tmplLine->elements[j].item); |
2605 | insertElement(&newLine, c, element++, cfi); |
2606 | free(c); |
2607 | quoteLen = 0; |
2608 | } |
2609 | } else { |
2610 | int itemlen = strlen(tmplLine->elements[j].item); |
2611 | quoteLen += itemlen; |
2612 | quoteLen += strlen(tmplLine->elements[j].indent); |
2613 | |
2614 | if (isquote(tmplLine->elements[j].item[itemlen - 1])) { |
2615 | c = malloc(quoteLen + 1); |
2616 | c[0] = '\0'; |
2617 | for (int i = firstQuotedItem; i < j+1; i++) { |
2618 | strcat(c, tmplLine->elements[i].item); |
2619 | strcat(c, tmplLine->elements[i].indent); |
2620 | } |
2621 | insertElement(&newLine, c, element++, cfi); |
2622 | free(c); |
2623 | |
2624 | firstQuotedItem = -1; |
2625 | quoteLen = 0; |
2626 | } |
2627 | } |
2628 | } |
2629 | while (tmplLine->numElements) |
2630 | removeElement(tmplLine, 0); |
2631 | if (tmplLine->elements) |
2632 | free(tmplLine->elements); |
2633 | |
2634 | tmplLine->numElements = newLine.numElements; |
2635 | tmplLine->elements = newLine.elements; |
2636 | } |
2637 | |
2638 | static void insertElement(struct singleLine * line, |
2639 | const char * item, int insertHere, |
2640 | struct configFileInfo * cfi) |
2641 | { |
2642 | struct keywordTypes * kw; |
2643 | char indent[2] = ""; |
2644 | |
2645 | /* sanity check */ |
2646 | if (insertHere > line->numElements) { |
2647 | dbgPrintf("insertElement() adjusting insertHere from %d to %d\n", |
2648 | insertHere, line->numElements); |
2649 | insertHere = line->numElements; |
2650 | } |
2651 | |
2652 | line->elements = realloc(line->elements, (line->numElements + 1) * |
2653 | sizeof(*line->elements)); |
2654 | memmove(&line->elements[insertHere+1], |
2655 | &line->elements[insertHere], |
2656 | (line->numElements - insertHere) * |
2657 | sizeof(*line->elements)); |
2658 | line->elements[insertHere].item = strdup(item); |
2659 | |
2660 | kw = getKeywordByType(line->type, cfi); |
2661 | |
2662 | if (line->numElements == 0) { |
2663 | indent[0] = '\0'; |
2664 | } else if (insertHere == 0) { |
2665 | indent[0] = kw->nextChar; |
2666 | } else if (kw->separatorChar != '\0') { |
2667 | indent[0] = kw->separatorChar; |
2668 | } else { |
2669 | indent[0] = ' '; |
2670 | } |
2671 | |
2672 | if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') { |
2673 | /* move the end-of-line forward */ |
2674 | line->elements[insertHere].indent = |
2675 | line->elements[insertHere-1].indent; |
2676 | line->elements[insertHere-1].indent = strdup(indent); |
2677 | } else { |
2678 | line->elements[insertHere].indent = strdup(indent); |
2679 | } |
2680 | |
2681 | line->numElements++; |
2682 | |
2683 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", |
2684 | line->elements[0].item, |
2685 | line->elements[insertHere].item, |
2686 | line->elements[insertHere].indent, |
2687 | insertHere); |
2688 | } |
2689 | |
2690 | static void removeElement(struct singleLine * line, int removeHere) { |
2691 | int i; |
2692 | |
2693 | /* sanity check */ |
2694 | if (removeHere >= line->numElements) return; |
2695 | |
2696 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, |
2697 | removeHere, line->elements[removeHere].item); |
2698 | |
2699 | free(line->elements[removeHere].item); |
2700 | |
2701 | if (removeHere > 1) { |
2702 | /* previous argument gets this argument's post-indentation */ |
2703 | free(line->elements[removeHere-1].indent); |
2704 | line->elements[removeHere-1].indent = |
2705 | line->elements[removeHere].indent; |
2706 | } else { |
2707 | free(line->elements[removeHere].indent); |
2708 | } |
2709 | |
2710 | /* now collapse the array, but don't bother to realloc smaller */ |
2711 | for (i = removeHere; i < line->numElements - 1; i++) |
2712 | line->elements[i] = line->elements[i + 1]; |
2713 | |
2714 | line->numElements--; |
2715 | } |
2716 | |
2717 | int argMatch(const char * one, const char * two) { |
2718 | char * first, * second; |
2719 | char * chptr; |
2720 | |
2721 | first = strcpy(alloca(strlen(one) + 1), one); |
2722 | second = strcpy(alloca(strlen(two) + 1), two); |
2723 | |
2724 | chptr = strchr(first, '='); |
2725 | if (chptr) *chptr = '\0'; |
2726 | |
2727 | chptr = strchr(second, '='); |
2728 | if (chptr) *chptr = '\0'; |
2729 | |
2730 | return strcmp(first, second); |
2731 | } |
2732 | |
2733 | int updateActualImage(struct grubConfig * cfg, const char * image, |
2734 | const char * prefix, const char * addArgs, |
2735 | const char * removeArgs, int multibootArgs) { |
2736 | struct singleEntry * entry; |
2737 | struct singleLine * line, * rootLine; |
2738 | int index = 0; |
2739 | int i, k; |
2740 | const char ** newArgs, ** oldArgs; |
2741 | const char ** arg; |
2742 | int useKernelArgs, useRoot; |
2743 | int firstElement; |
2744 | int *usedElements; |
2745 | int doreplace; |
2746 | |
2747 | if (!image) return 0; |
2748 | |
2749 | if (!addArgs) { |
2750 | newArgs = malloc(sizeof(*newArgs)); |
2751 | *newArgs = NULL; |
2752 | } else { |
2753 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
2754 | fprintf(stderr, |
2755 | _("grubby: error separating arguments '%s'\n"), addArgs); |
2756 | return 1; |
2757 | } |
2758 | } |
2759 | |
2760 | if (!removeArgs) { |
2761 | oldArgs = malloc(sizeof(*oldArgs)); |
2762 | *oldArgs = NULL; |
2763 | } else { |
2764 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
2765 | fprintf(stderr, |
2766 | _("grubby: error separating arguments '%s'\n"), removeArgs); |
2767 | free(newArgs); |
2768 | return 1; |
2769 | } |
2770 | } |
2771 | |
2772 | |
2773 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
2774 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); |
2775 | |
2776 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
2777 | && !multibootArgs); |
2778 | |
2779 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
2780 | |
2781 | if (multibootArgs && !entry->multiboot) |
2782 | continue; |
2783 | |
2784 | /* Determine where to put the args. If this config supports |
2785 | * LT_KERNELARGS, use that. Otherwise use |
2786 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. |
2787 | */ |
2788 | if (useKernelArgs) { |
2789 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2790 | if (!line) { |
2791 | /* no LT_KERNELARGS, need to add it */ |
2792 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, |
2793 | cfg->secondaryIndent, NULL); |
2794 | } |
2795 | firstElement = 1; |
2796 | |
2797 | } else if (multibootArgs) { |
2798 | line = getLineByType(LT_HYPER, entry->lines); |
2799 | if (!line) { |
2800 | /* a multiboot entry without LT_HYPER? */ |
2801 | continue; |
2802 | } |
2803 | firstElement = 2; |
2804 | |
2805 | } else { |
2806 | line = getLineByType(LT_KERNEL|LT_MBMODULE, entry->lines); |
2807 | if (!line) { |
2808 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ |
2809 | continue; |
2810 | } |
2811 | firstElement = 2; |
2812 | } |
2813 | |
2814 | /* handle the elilo case which does: |
2815 | * append="hypervisor args -- kernel args" |
2816 | */ |
2817 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { |
2818 | /* this is a multiboot entry, make sure there's |
2819 | * -- on the args line |
2820 | */ |
2821 | for (i = firstElement; i < line->numElements; i++) { |
2822 | if (!strcmp(line->elements[i].item, "--")) |
2823 | break; |
2824 | } |
2825 | if (i == line->numElements) { |
2826 | /* assume all existing args are kernel args, |
2827 | * prepend -- to make it official |
2828 | */ |
2829 | insertElement(line, "--", firstElement, cfg->cfi); |
2830 | i = firstElement; |
2831 | } |
2832 | if (!multibootArgs) { |
2833 | /* kernel args start after the -- */ |
2834 | firstElement = i + 1; |
2835 | } |
2836 | } else if (cfg->cfi->mbConcatArgs) { |
2837 | /* this is a non-multiboot entry, remove hyper args */ |
2838 | for (i = firstElement; i < line->numElements; i++) { |
2839 | if (!strcmp(line->elements[i].item, "--")) |
2840 | break; |
2841 | } |
2842 | if (i < line->numElements) { |
2843 | /* remove args up to -- */ |
2844 | while (strcmp(line->elements[firstElement].item, "--")) |
2845 | removeElement(line, firstElement); |
2846 | /* remove -- */ |
2847 | removeElement(line, firstElement); |
2848 | } |
2849 | } |
2850 | |
2851 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
2852 | |
2853 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
2854 | |
2855 | doreplace = 1; |
2856 | for (i = firstElement; i < line->numElements; i++) { |
2857 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2858 | !strcmp(line->elements[i].item, "--")) |
2859 | { |
2860 | /* reached the end of hyper args, insert here */ |
2861 | doreplace = 0; |
2862 | break; |
2863 | } |
2864 | if (usedElements[i]) |
2865 | continue; |
2866 | if (!argMatch(line->elements[i].item, *arg)) { |
2867 | usedElements[i]=1; |
2868 | break; |
2869 | } |
2870 | } |
2871 | |
2872 | if (i < line->numElements && doreplace) { |
2873 | /* direct replacement */ |
2874 | free(line->elements[i].item); |
2875 | line->elements[i].item = strdup(*arg); |
2876 | |
2877 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
2878 | /* root= replacement */ |
2879 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2880 | if (rootLine) { |
2881 | free(rootLine->elements[1].item); |
2882 | rootLine->elements[1].item = strdup(*arg + 5); |
2883 | } else { |
2884 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, |
2885 | cfg->secondaryIndent, *arg + 5); |
2886 | } |
2887 | } |
2888 | |
2889 | else { |
2890 | /* insert/append */ |
2891 | insertElement(line, *arg, i, cfg->cfi); |
2892 | usedElements = realloc(usedElements, line->numElements * |
2893 | sizeof(*usedElements)); |
2894 | memmove(&usedElements[i + 1], &usedElements[i], |
2895 | line->numElements - i - 1); |
2896 | usedElements[i] = 1; |
2897 | |
2898 | /* if we updated a root= here even though there is a |
2899 | LT_ROOT available we need to remove the LT_ROOT entry |
2900 | (this will happen if we switch from a device to a label) */ |
2901 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
2902 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2903 | if (rootLine) |
2904 | removeLine(entry, rootLine); |
2905 | } |
2906 | } |
2907 | } |
2908 | |
2909 | free(usedElements); |
2910 | |
2911 | for (arg = oldArgs; *arg; arg++) { |
2912 | for (i = firstElement; i < line->numElements; i++) { |
2913 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2914 | !strcmp(line->elements[i].item, "--")) |
2915 | /* reached the end of hyper args, stop here */ |
2916 | break; |
2917 | if (!argMatch(line->elements[i].item, *arg)) { |
2918 | removeElement(line, i); |
2919 | break; |
2920 | } |
2921 | } |
2922 | /* handle removing LT_ROOT line too */ |
2923 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
2924 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2925 | if (rootLine) |
2926 | removeLine(entry, rootLine); |
2927 | } |
2928 | } |
2929 | |
2930 | if (line->numElements == 1) { |
2931 | /* don't need the line at all (note it has to be a |
2932 | LT_KERNELARGS for this to happen */ |
2933 | removeLine(entry, line); |
2934 | } |
2935 | } |
2936 | |
2937 | free(newArgs); |
2938 | free(oldArgs); |
2939 | |
2940 | return 0; |
2941 | } |
2942 | |
2943 | int updateImage(struct grubConfig * cfg, const char * image, |
2944 | const char * prefix, const char * addArgs, |
2945 | const char * removeArgs, |
2946 | const char * addMBArgs, const char * removeMBArgs) { |
2947 | int rc = 0; |
2948 | |
2949 | if (!image) return rc; |
2950 | |
2951 | /* update the main args first... */ |
2952 | if (addArgs || removeArgs) |
2953 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); |
2954 | if (rc) return rc; |
2955 | |
2956 | /* and now any multiboot args */ |
2957 | if (addMBArgs || removeMBArgs) |
2958 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); |
2959 | return rc; |
2960 | } |
2961 | |
2962 | int updateInitrd(struct grubConfig * cfg, const char * image, |
2963 | const char * prefix, const char * initrd) { |
2964 | struct singleEntry * entry; |
2965 | struct singleLine * line, * kernelLine, *endLine = NULL; |
2966 | int index = 0; |
2967 | |
2968 | if (!image) return 0; |
2969 | |
2970 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
2971 | kernelLine = getLineByType(LT_KERNEL, entry->lines); |
2972 | if (!kernelLine) continue; |
2973 | |
2974 | line = getLineByType(LT_INITRD, entry->lines); |
2975 | if (line) |
2976 | removeLine(entry, line); |
2977 | if (prefix) { |
2978 | int prefixLen = strlen(prefix); |
2979 | if (!strncmp(initrd, prefix, prefixLen)) |
2980 | initrd += prefixLen; |
2981 | } |
2982 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
2983 | if (endLine) |
2984 | removeLine(entry, endLine); |
2985 | line = addLine(entry, cfg->cfi, LT_INITRD, kernelLine->indent, initrd); |
2986 | if (!line) |
2987 | return 1; |
2988 | if (endLine) { |
2989 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
2990 | if (!line) |
2991 | return 1; |
2992 | } |
2993 | |
2994 | break; |
2995 | } |
2996 | |
2997 | return 0; |
2998 | } |
2999 | |
3000 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { |
3001 | int fd; |
3002 | unsigned char bootSect[512]; |
3003 | int offset; |
3004 | |
3005 | fd = open(device, O_RDONLY); |
3006 | if (fd < 0) { |
3007 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3008 | device, strerror(errno)); |
3009 | return 1; |
3010 | } |
3011 | |
3012 | if (read(fd, bootSect, 512) != 512) { |
3013 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3014 | device, strerror(errno)); |
3015 | return 1; |
3016 | } |
3017 | close(fd); |
3018 | |
3019 | /* first three bytes should match, a jmp short should be in there */ |
3020 | if (memcmp(boot, bootSect, 3)) |
3021 | return 0; |
3022 | |
3023 | if (boot[1] == JMP_SHORT_OPCODE) { |
3024 | offset = boot[2] + 2; |
3025 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
3026 | offset = (boot[3] << 8) + boot[2] + 2; |
3027 | } else if (boot[0] == JMP_SHORT_OPCODE) { |
3028 | offset = boot[1] + 2; |
3029 | /* |
3030 | * it looks like grub, when copying stage1 into the mbr, patches stage1 |
3031 | * right after the JMP location, replacing other instructions such as |
3032 | * JMPs for NOOPs. So, relax the check a little bit by skipping those |
3033 | * different bytes. |
3034 | */ |
3035 | if ((bootSect[offset + 1] == NOOP_OPCODE) |
3036 | && (bootSect[offset + 2] == NOOP_OPCODE)) { |
3037 | offset = offset + 3; |
3038 | } |
3039 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
3040 | offset = (boot[2] << 8) + boot[1] + 2; |
3041 | } else { |
3042 | return 0; |
3043 | } |
3044 | |
3045 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
3046 | return 0; |
3047 | |
3048 | return 2; |
3049 | } |
3050 | |
3051 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { |
3052 | int fd; |
3053 | char buf[65536]; |
3054 | char * end; |
3055 | char * chptr; |
3056 | char * chptr2; |
3057 | int rc; |
3058 | |
3059 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
3060 | *raw* devices listed in there */ |
3061 | |
3062 | if (!strncmp(mdDev, "/dev/", 5)) |
3063 | mdDev += 5; |
3064 | |
3065 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
3066 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
3067 | strerror(errno)); |
3068 | return 2; |
3069 | } |
3070 | |
3071 | rc = read(fd, buf, sizeof(buf) - 1); |
3072 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
3073 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
3074 | strerror(errno)); |
3075 | close(fd); |
3076 | return 2; |
3077 | } |
3078 | close(fd); |
3079 | buf[rc] = '\0'; |
3080 | |
3081 | chptr = buf; |
3082 | while (*chptr) { |
3083 | end = strchr(chptr, '\n'); |
3084 | if (!end) break; |
3085 | *end = '\0'; |
3086 | |
3087 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
3088 | chptr[strlen(mdDev)] == ' ') { |
3089 | |
3090 | /* found the device */ |
3091 | while (*chptr && *chptr != ':') chptr++; |
3092 | chptr++; |
3093 | while (*chptr && isspace(*chptr)) chptr++; |
3094 | |
3095 | /* skip the "active" bit */ |
3096 | while (*chptr && !isspace(*chptr)) chptr++; |
3097 | while (*chptr && isspace(*chptr)) chptr++; |
3098 | |
3099 | /* skip the raid level */ |
3100 | while (*chptr && !isspace(*chptr)) chptr++; |
3101 | while (*chptr && isspace(*chptr)) chptr++; |
3102 | |
3103 | /* everything else is partition stuff */ |
3104 | while (*chptr) { |
3105 | chptr2 = chptr; |
3106 | while (*chptr2 && *chptr2 != '[') chptr2++; |
3107 | if (!*chptr2) break; |
3108 | |
3109 | /* yank off the numbers at the end */ |
3110 | chptr2--; |
3111 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; |
3112 | chptr2++; |
3113 | *chptr2 = '\0'; |
3114 | |
3115 | /* Better, now we need the /dev/ back. We're done with |
3116 | * everything before this point, so we can just put |
3117 | * the /dev/ part there. There will always be room. */ |
3118 | memcpy(chptr - 5, "/dev/", 5); |
3119 | rc = checkDeviceBootloader(chptr - 5, boot); |
3120 | if (rc != 2) { |
3121 | return rc; |
3122 | } |
3123 | |
3124 | chptr = chptr2 + 1; |
3125 | /* skip the [11] bit */ |
3126 | while (*chptr && !isspace(*chptr)) chptr++; |
3127 | /* and move to the next one */ |
3128 | while (*chptr && isspace(*chptr)) chptr++; |
3129 | } |
3130 | |
3131 | /* we're good to go */ |
3132 | return 2; |
3133 | } |
3134 | |
3135 | chptr = end + 1; |
3136 | } |
3137 | |
3138 | fprintf(stderr, |
3139 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
3140 | mdDev); |
3141 | return 0; |
3142 | } |
3143 | |
3144 | int checkForLilo(struct grubConfig * config) { |
3145 | int fd; |
3146 | unsigned char boot[512]; |
3147 | struct singleLine * line; |
3148 | |
3149 | for (line = config->theLines; line; line = line->next) |
3150 | if (line->type == LT_BOOT) break; |
3151 | |
3152 | if (!line) { |
3153 | fprintf(stderr, |
3154 | _("grubby: no boot line found in lilo configuration\n")); |
3155 | return 1; |
3156 | } |
3157 | |
3158 | if (line->numElements != 2) return 1; |
3159 | |
3160 | fd = open("/boot/boot.b", O_RDONLY); |
3161 | if (fd < 0) { |
3162 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3163 | "/boot/boot.b", strerror(errno)); |
3164 | return 1; |
3165 | } |
3166 | |
3167 | if (read(fd, boot, 512) != 512) { |
3168 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3169 | "/boot/boot.b", strerror(errno)); |
3170 | return 1; |
3171 | } |
3172 | close(fd); |
3173 | |
3174 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
3175 | return checkLiloOnRaid(line->elements[1].item, boot); |
3176 | |
3177 | return checkDeviceBootloader(line->elements[1].item, boot); |
3178 | } |
3179 | |
3180 | int checkForGrub2(struct grubConfig * config) { |
3181 | if (!access("/etc/grub.d/", R_OK)) |
3182 | return 2; |
3183 | |
3184 | return 1; |
3185 | } |
3186 | |
3187 | int checkForGrub(struct grubConfig * config) { |
3188 | int fd; |
3189 | unsigned char bootSect[512]; |
3190 | char * boot; |
3191 | int onSuse = isSuseSystem(); |
3192 | |
3193 | |
3194 | if (onSuse) { |
3195 | if (parseSuseGrubConf(NULL, &boot)) |
3196 | return 0; |
3197 | } else { |
3198 | if (parseSysconfigGrub(NULL, &boot)) |
3199 | return 0; |
3200 | } |
3201 | |
3202 | /* assume grub is not installed -- not an error condition */ |
3203 | if (!boot) |
3204 | return 0; |
3205 | |
3206 | fd = open("/boot/grub/stage1", O_RDONLY); |
3207 | if (fd < 0) |
3208 | /* this doesn't exist if grub hasn't been installed */ |
3209 | return 0; |
3210 | |
3211 | if (read(fd, bootSect, 512) != 512) { |
3212 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3213 | "/boot/grub/stage1", strerror(errno)); |
3214 | close(fd); |
3215 | return 1; |
3216 | } |
3217 | close(fd); |
3218 | |
3219 | /* The more elaborate checks do not work on SuSE. The checks done |
3220 | * seem to be reasonble (at least for now), so just return success |
3221 | */ |
3222 | if (onSuse) |
3223 | return 2; |
3224 | |
3225 | return checkDeviceBootloader(boot, bootSect); |
3226 | } |
3227 | |
3228 | int checkForExtLinux(struct grubConfig * config) { |
3229 | int fd; |
3230 | unsigned char bootSect[512]; |
3231 | char * boot; |
3232 | char executable[] = "/boot/extlinux/extlinux"; |
3233 | |
3234 | printf("entered: checkForExtLinux()\n"); |
3235 | |
3236 | if (parseSysconfigGrub(NULL, &boot)) |
3237 | return 0; |
3238 | |
3239 | /* assume grub is not installed -- not an error condition */ |
3240 | if (!boot) |
3241 | return 0; |
3242 | |
3243 | fd = open(executable, O_RDONLY); |
3244 | if (fd < 0) |
3245 | /* this doesn't exist if grub hasn't been installed */ |
3246 | return 0; |
3247 | |
3248 | if (read(fd, bootSect, 512) != 512) { |
3249 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3250 | executable, strerror(errno)); |
3251 | return 1; |
3252 | } |
3253 | close(fd); |
3254 | |
3255 | return checkDeviceBootloader(boot, bootSect); |
3256 | } |
3257 | |
3258 | int checkForYaboot(struct grubConfig * config) { |
3259 | /* |
3260 | * This is a simplistic check that we consider good enough for own puporses |
3261 | * |
3262 | * If we were to properly check if yaboot is *installed* we'd need to: |
3263 | * 1) get the system boot device (LT_BOOT) |
3264 | * 2) considering it's a raw filesystem, check if the yaboot binary matches |
3265 | * the content on the boot device |
3266 | * 3) if not, copy the binary to a temporary file and run "addnote" on it |
3267 | * 4) check again if binary and boot device contents match |
3268 | */ |
3269 | if (!access("/etc/yaboot.conf", R_OK)) |
3270 | return 2; |
3271 | |
3272 | return 1; |
3273 | } |
3274 | |
3275 | int checkForElilo(struct grubConfig * config) { |
3276 | if (!access("/etc/elilo.conf", R_OK)) |
3277 | return 2; |
3278 | |
3279 | return 1; |
3280 | } |
3281 | |
3282 | static char * getRootSpecifier(char * str) { |
3283 | char * idx, * rootspec = NULL; |
3284 | |
3285 | if (*str == '(') { |
3286 | idx = rootspec = strdup(str); |
3287 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; |
3288 | *(++idx) = '\0'; |
3289 | } |
3290 | return rootspec; |
3291 | } |
3292 | |
3293 | static char * getInitrdVal(struct grubConfig * config, |
3294 | const char * prefix, struct singleLine *tmplLine, |
3295 | const char * newKernelInitrd, |
3296 | const char ** extraInitrds, int extraInitrdCount) |
3297 | { |
3298 | char *initrdVal, *end; |
3299 | int i; |
3300 | size_t totalSize; |
3301 | size_t prefixLen; |
3302 | char separatorChar; |
3303 | |
3304 | prefixLen = strlen(prefix); |
3305 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */; |
3306 | |
3307 | for (i = 0; i < extraInitrdCount; i++) { |
3308 | totalSize += sizeof(separatorChar); |
3309 | totalSize += strlen(extraInitrds[i]) - prefixLen; |
3310 | } |
3311 | |
3312 | initrdVal = end = malloc(totalSize); |
3313 | |
3314 | end = stpcpy (end, newKernelInitrd + prefixLen); |
3315 | |
3316 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; |
3317 | for (i = 0; i < extraInitrdCount; i++) { |
3318 | const char *extraInitrd; |
3319 | int j; |
3320 | |
3321 | extraInitrd = extraInitrds[i] + prefixLen; |
3322 | /* Don't add entries that are already there */ |
3323 | if (tmplLine != NULL) { |
3324 | for (j = 2; j < tmplLine->numElements; j++) |
3325 | if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0) |
3326 | break; |
3327 | |
3328 | if (j != tmplLine->numElements) |
3329 | continue; |
3330 | } |
3331 | |
3332 | *end++ = separatorChar; |
3333 | end = stpcpy(end, extraInitrd); |
3334 | } |
3335 | |
3336 | return initrdVal; |
3337 | } |
3338 | |
3339 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, |
3340 | const char * prefix, |
3341 | const char * newKernelPath, const char * newKernelTitle, |
3342 | const char * newKernelArgs, const char * newKernelInitrd, |
3343 | const char ** extraInitrds, int extraInitrdCount, |
3344 | const char * newMBKernel, const char * newMBKernelArgs) { |
3345 | struct singleEntry * new; |
3346 | struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL; |
3347 | int needs; |
3348 | char * chptr; |
3349 | |
3350 | if (!newKernelPath) return 0; |
3351 | |
3352 | /* if the newKernelTitle is too long silently munge it into something |
3353 | * we can live with. truncating is first check, then we'll just mess with |
3354 | * it until it looks better */ |
3355 | if (config->cfi->maxTitleLength && |
3356 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
3357 | char * buf = alloca(config->cfi->maxTitleLength + 7); |
3358 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); |
3359 | int i = 1; |
3360 | |
3361 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); |
3362 | while (findEntryByPath(config, buf, NULL, NULL)) { |
3363 | sprintf(numBuf, "%d", i++); |
3364 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
3365 | } |
3366 | |
3367 | newKernelTitle = buf + 6; |
3368 | } |
3369 | |
3370 | new = malloc(sizeof(*new)); |
3371 | new->skip = 0; |
3372 | new->multiboot = 0; |
3373 | new->next = config->entries; |
3374 | new->lines = NULL; |
3375 | config->entries = new; |
3376 | |
3377 | /* copy/update from the template */ |
3378 | needs = NEED_KERNEL | NEED_TITLE; |
3379 | if (newKernelInitrd) |
3380 | needs |= NEED_INITRD; |
3381 | if (newMBKernel) { |
3382 | needs |= NEED_MB; |
3383 | new->multiboot = 1; |
3384 | } |
3385 | |
3386 | if (template) { |
3387 | for (masterLine = template->lines; |
3388 | masterLine && (tmplLine = lineDup(masterLine)); |
3389 | lineFree(tmplLine), masterLine = masterLine->next) |
3390 | { |
3391 | dbgPrintf("addNewKernel processing %d\n", tmplLine->type); |
3392 | |
3393 | /* skip comments */ |
3394 | chptr = tmplLine->indent; |
3395 | while (*chptr && isspace(*chptr)) chptr++; |
3396 | if (*chptr == '#') continue; |
3397 | |
3398 | if (tmplLine->type == LT_KERNEL && |
3399 | tmplLine->numElements >= 2) { |
3400 | if (!template->multiboot && (needs & NEED_MB)) { |
3401 | /* it's not a multiboot template and this is the kernel |
3402 | * line. Try to be intelligent about inserting the |
3403 | * hypervisor at the same time. |
3404 | */ |
3405 | if (config->cfi->mbHyperFirst) { |
3406 | /* insert the hypervisor first */ |
3407 | newLine = addLine(new, config->cfi, LT_HYPER, |
3408 | tmplLine->indent, |
3409 | newMBKernel + strlen(prefix)); |
3410 | /* set up for adding the kernel line */ |
3411 | free(tmplLine->indent); |
3412 | tmplLine->indent = strdup(config->secondaryIndent); |
3413 | needs &= ~NEED_MB; |
3414 | } |
3415 | if (needs & NEED_KERNEL) { |
3416 | /* use addLineTmpl to preserve line elements, |
3417 | * otherwise we could just call addLine. Unfortunately |
3418 | * this means making some changes to the template |
3419 | * such as the indent change above and the type |
3420 | * change below. |
3421 | */ |
3422 | struct keywordTypes * mbm_kw = |
3423 | getKeywordByType(LT_MBMODULE, config->cfi); |
3424 | if (mbm_kw) { |
3425 | tmplLine->type = LT_MBMODULE; |
3426 | free(tmplLine->elements[0].item); |
3427 | tmplLine->elements[0].item = strdup(mbm_kw->key); |
3428 | } |
3429 | newLine = addLineTmpl(new, tmplLine, newLine, |
3430 | newKernelPath + strlen(prefix), config->cfi); |
3431 | needs &= ~NEED_KERNEL; |
3432 | } |
3433 | if (needs & NEED_MB) { /* !mbHyperFirst */ |
3434 | newLine = addLine(new, config->cfi, LT_HYPER, |
3435 | config->secondaryIndent, |
3436 | newMBKernel + strlen(prefix)); |
3437 | needs &= ~NEED_MB; |
3438 | } |
3439 | } else if (needs & NEED_KERNEL) { |
3440 | newLine = addLineTmpl(new, tmplLine, newLine, |
3441 | newKernelPath + strlen(prefix), config->cfi); |
3442 | needs &= ~NEED_KERNEL; |
3443 | } |
3444 | |
3445 | } else if (tmplLine->type == LT_HYPER && |
3446 | tmplLine->numElements >= 2) { |
3447 | if (needs & NEED_MB) { |
3448 | newLine = addLineTmpl(new, tmplLine, newLine, |
3449 | newMBKernel + strlen(prefix), config->cfi); |
3450 | needs &= ~NEED_MB; |
3451 | } |
3452 | |
3453 | } else if (tmplLine->type == LT_MBMODULE && |
3454 | tmplLine->numElements >= 2) { |
3455 | if (new->multiboot) { |
3456 | if (needs & NEED_KERNEL) { |
3457 | newLine = addLineTmpl(new, tmplLine, newLine, |
3458 | newKernelPath + |
3459 | strlen(prefix), config->cfi); |
3460 | needs &= ~NEED_KERNEL; |
3461 | } else if (config->cfi->mbInitRdIsModule && |
3462 | (needs & NEED_INITRD)) { |
3463 | char *initrdVal; |
3464 | initrdVal = getInitrdVal(config, prefix, tmplLine, |
3465 | newKernelInitrd, extraInitrds, |
3466 | extraInitrdCount); |
3467 | newLine = addLineTmpl(new, tmplLine, newLine, |
3468 | initrdVal, config->cfi); |
3469 | free(initrdVal); |
3470 | needs &= ~NEED_INITRD; |
3471 | } |
3472 | } else if (needs & NEED_KERNEL) { |
3473 | /* template is multi but new is not, |
3474 | * insert the kernel in the first module slot |
3475 | */ |
3476 | tmplLine->type = LT_KERNEL; |
3477 | free(tmplLine->elements[0].item); |
3478 | tmplLine->elements[0].item = |
3479 | strdup(getKeywordByType(LT_KERNEL, config->cfi)->key); |
3480 | newLine = addLineTmpl(new, tmplLine, newLine, |
3481 | newKernelPath + strlen(prefix), config->cfi); |
3482 | needs &= ~NEED_KERNEL; |
3483 | } else if (needs & NEED_INITRD) { |
3484 | char *initrdVal; |
3485 | /* template is multi but new is not, |
3486 | * insert the initrd in the second module slot |
3487 | */ |
3488 | tmplLine->type = LT_INITRD; |
3489 | free(tmplLine->elements[0].item); |
3490 | tmplLine->elements[0].item = |
3491 | strdup(getKeywordByType(LT_INITRD, config->cfi)->key); |
3492 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3493 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3494 | free(initrdVal); |
3495 | needs &= ~NEED_INITRD; |
3496 | } |
3497 | |
3498 | } else if (tmplLine->type == LT_INITRD && |
3499 | tmplLine->numElements >= 2) { |
3500 | if (needs & NEED_INITRD && |
3501 | new->multiboot && !template->multiboot && |
3502 | config->cfi->mbInitRdIsModule) { |
3503 | /* make sure we don't insert the module initrd |
3504 | * before the module kernel... if we don't do it here, |
3505 | * it will be inserted following the template. |
3506 | */ |
3507 | if (!needs & NEED_KERNEL) { |
3508 | char *initrdVal; |
3509 | |
3510 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3511 | newLine = addLine(new, config->cfi, LT_MBMODULE, |
3512 | config->secondaryIndent, |
3513 | initrdVal); |
3514 | free(initrdVal); |
3515 | needs &= ~NEED_INITRD; |
3516 | } |
3517 | } else if (needs & NEED_INITRD) { |
3518 | char *initrdVal; |
3519 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3520 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3521 | free(initrdVal); |
3522 | needs &= ~NEED_INITRD; |
3523 | } |
3524 | |
3525 | } else if (tmplLine->type == LT_MENUENTRY && |
3526 | (needs & NEED_TITLE)) { |
3527 | requote(tmplLine, config->cfi); |
3528 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3529 | strcpy(nkt, "'"); |
3530 | strcat(nkt, newKernelTitle); |
3531 | strcat(nkt, "'"); |
3532 | newLine = addLineTmpl(new, tmplLine, newLine, nkt, config->cfi); |
3533 | free(nkt); |
3534 | needs &= ~NEED_TITLE; |
3535 | } else if (tmplLine->type == LT_TITLE && |
3536 | (needs & NEED_TITLE)) { |
3537 | if (tmplLine->numElements >= 2) { |
3538 | newLine = addLineTmpl(new, tmplLine, newLine, |
3539 | newKernelTitle, config->cfi); |
3540 | needs &= ~NEED_TITLE; |
3541 | } else if (tmplLine->numElements == 1 && |
3542 | config->cfi->titleBracketed) { |
3543 | /* addLineTmpl doesn't handle titleBracketed */ |
3544 | newLine = addLine(new, config->cfi, LT_TITLE, |
3545 | tmplLine->indent, newKernelTitle); |
3546 | needs &= ~NEED_TITLE; |
3547 | } |
3548 | } else if (tmplLine->type == LT_ECHO) { |
3549 | requote(tmplLine, config->cfi); |
3550 | static const char *prefix = "'Loading "; |
3551 | if (tmplLine->numElements > 1 && |
3552 | strstr(tmplLine->elements[1].item, prefix) && |
3553 | masterLine->next && masterLine->next->type == LT_KERNEL) { |
3554 | char *newTitle = malloc(strlen(prefix) + |
3555 | strlen(newKernelTitle) + 2); |
3556 | |
3557 | strcpy(newTitle, prefix); |
3558 | strcat(newTitle, newKernelTitle); |
3559 | strcat(newTitle, "'"); |
3560 | newLine = addLine(new, config->cfi, LT_ECHO, |
3561 | tmplLine->indent, newTitle); |
3562 | free(newTitle); |
3563 | } else { |
3564 | /* pass through other lines from the template */ |
3565 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, |
3566 | config->cfi); |
3567 | } |
3568 | } else { |
3569 | /* pass through other lines from the template */ |
3570 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); |
3571 | } |
3572 | } |
3573 | |
3574 | } else { |
3575 | /* don't have a template, so start the entry with the |
3576 | * appropriate starting line |
3577 | */ |
3578 | switch (config->cfi->entryStart) { |
3579 | case LT_KERNEL: |
3580 | if (new->multiboot && config->cfi->mbHyperFirst) { |
3581 | /* fall through to LT_HYPER */ |
3582 | } else { |
3583 | newLine = addLine(new, config->cfi, LT_KERNEL, |
3584 | config->primaryIndent, |
3585 | newKernelPath + strlen(prefix)); |
3586 | needs &= ~NEED_KERNEL; |
3587 | break; |
3588 | } |
3589 | |
3590 | case LT_HYPER: |
3591 | newLine = addLine(new, config->cfi, LT_HYPER, |
3592 | config->primaryIndent, |
3593 | newMBKernel + strlen(prefix)); |
3594 | needs &= ~NEED_MB; |
3595 | break; |
3596 | |
3597 | case LT_MENUENTRY: { |
3598 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3599 | strcpy(nkt, "'"); |
3600 | strcat(nkt, newKernelTitle); |
3601 | strcat(nkt, "'"); |
3602 | newLine = addLine(new, config->cfi, LT_MENUENTRY, |
3603 | config->primaryIndent, nkt); |
3604 | free(nkt); |
3605 | needs &= ~NEED_TITLE; |
3606 | needs |= NEED_END; |
3607 | break; |
3608 | } |
3609 | case LT_TITLE: |
3610 | if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above) |
3611 | char * templabel; |
3612 | int x = 0, y = 0; |
3613 | |
3614 | templabel = strdup(newKernelTitle); |
3615 | while( templabel[x]){ |
3616 | if( templabel[x] == ' ' ){ |
3617 | y = x; |
3618 | while( templabel[y] ){ |
3619 | templabel[y] = templabel[y+1]; |
3620 | y++; |
3621 | } |
3622 | } |
3623 | x++; |
3624 | } |
3625 | newLine = addLine(new, config->cfi, LT_TITLE, |
3626 | config->primaryIndent, templabel); |
3627 | free(templabel); |
3628 | }else{ |
3629 | newLine = addLine(new, config->cfi, LT_TITLE, |
3630 | config->primaryIndent, newKernelTitle); |
3631 | } |
3632 | needs &= ~NEED_TITLE; |
3633 | break; |
3634 | |
3635 | default: |
3636 | abort(); |
3637 | } |
3638 | } |
3639 | |
3640 | /* add the remainder of the lines, i.e. those that either |
3641 | * weren't present in the template, or in the case of no template, |
3642 | * all the lines following the entryStart. |
3643 | */ |
3644 | if (needs & NEED_TITLE) { |
3645 | newLine = addLine(new, config->cfi, LT_TITLE, |
3646 | config->secondaryIndent, |
3647 | newKernelTitle); |
3648 | needs &= ~NEED_TITLE; |
3649 | } |
3650 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
3651 | newLine = addLine(new, config->cfi, LT_HYPER, |
3652 | config->secondaryIndent, |
3653 | newMBKernel + strlen(prefix)); |
3654 | needs &= ~NEED_MB; |
3655 | } |
3656 | if (needs & NEED_KERNEL) { |
3657 | newLine = addLine(new, config->cfi, |
3658 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3659 | config->cfi)) ? |
3660 | LT_MBMODULE : LT_KERNEL, |
3661 | config->secondaryIndent, |
3662 | newKernelPath + strlen(prefix)); |
3663 | needs &= ~NEED_KERNEL; |
3664 | } |
3665 | if (needs & NEED_MB) { |
3666 | newLine = addLine(new, config->cfi, LT_HYPER, |
3667 | config->secondaryIndent, |
3668 | newMBKernel + strlen(prefix)); |
3669 | needs &= ~NEED_MB; |
3670 | } |
3671 | if (needs & NEED_INITRD) { |
3672 | char *initrdVal; |
3673 | initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount); |
3674 | newLine = addLine(new, config->cfi, |
3675 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3676 | config->cfi)) ? |
3677 | LT_MBMODULE : LT_INITRD, |
3678 | config->secondaryIndent, |
3679 | initrdVal); |
3680 | free(initrdVal); |
3681 | needs &= ~NEED_INITRD; |
3682 | } |
3683 | if (needs & NEED_END) { |
3684 | newLine = addLine(new, config->cfi, LT_ENTRY_END, |
3685 | config->secondaryIndent, NULL); |
3686 | needs &= ~NEED_END; |
3687 | } |
3688 | |
3689 | if (needs) { |
3690 | printf(_("grubby: needs=%d, aborting\n"), needs); |
3691 | abort(); |
3692 | } |
3693 | |
3694 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, |
3695 | newMBKernelArgs, NULL)) return 1; |
3696 | |
3697 | return 0; |
3698 | } |
3699 | |
3700 | static void traceback(int signum) |
3701 | { |
3702 | void *array[40]; |
3703 | size_t size; |
3704 | |
3705 | signal(SIGSEGV, SIG_DFL); |
3706 | memset(array, '\0', sizeof (array)); |
3707 | size = backtrace(array, 40); |
3708 | |
3709 | fprintf(stderr, "grubby recieved SIGSEGV! Backtrace (%ld):\n", |
3710 | (unsigned long)size); |
3711 | backtrace_symbols_fd(array, size, STDERR_FILENO); |
3712 | exit(1); |
3713 | } |
3714 | |
3715 | int main(int argc, const char ** argv) { |
3716 | poptContext optCon; |
3717 | const char * grubConfig = NULL; |
3718 | char * outputFile = NULL; |
3719 | int arg = 0; |
3720 | int flags = 0; |
3721 | int badImageOkay = 0; |
3722 | int configureGrub2 = 0; |
3723 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
3724 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
3725 | int configureExtLinux = 0; |
3726 | int bootloaderProbe = 0; |
3727 | int extraInitrdCount = 0; |
3728 | char * updateKernelPath = NULL; |
3729 | char * newKernelPath = NULL; |
3730 | char * removeKernelPath = NULL; |
3731 | char * newKernelArgs = NULL; |
3732 | char * newKernelInitrd = NULL; |
3733 | char * newKernelTitle = NULL; |
3734 | char * newKernelVersion = NULL; |
3735 | char * newMBKernel = NULL; |
3736 | char * newMBKernelArgs = NULL; |
3737 | char * removeMBKernelArgs = NULL; |
3738 | char * removeMBKernel = NULL; |
3739 | char * bootPrefix = NULL; |
3740 | char * defaultKernel = NULL; |
3741 | char * removeArgs = NULL; |
3742 | char * kernelInfo = NULL; |
3743 | char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
3744 | const char * chptr = NULL; |
3745 | struct configFileInfo * cfi = NULL; |
3746 | struct grubConfig * config; |
3747 | struct singleEntry * template = NULL; |
3748 | int copyDefault = 0, makeDefault = 0; |
3749 | int displayDefault = 0; |
3750 | int displayDefaultIndex = 0; |
3751 | int displayDefaultTitle = 0; |
3752 | int defaultIndex = -1; |
3753 | struct poptOption options[] = { |
3754 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
3755 | _("add an entry for the specified kernel"), _("kernel-path") }, |
3756 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
3757 | _("add an entry for the specified multiboot kernel"), NULL }, |
3758 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
3759 | _("default arguments for the new kernel or new arguments for " |
3760 | "kernel being updated"), _("args") }, |
3761 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
3762 | _("default arguments for the new multiboot kernel or " |
3763 | "new arguments for multiboot kernel being updated"), NULL }, |
3764 | { "bad-image-okay", 0, 0, &badImageOkay, 0, |
3765 | _("don't sanity check images in boot entries (for testing only)"), |
3766 | NULL }, |
3767 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
3768 | _("filestystem which contains /boot directory (for testing only)"), |
3769 | _("bootfs") }, |
3770 | #if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__) |
3771 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
3772 | _("check which bootloader is installed on boot sector") }, |
3773 | #endif |
3774 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
3775 | _("path to grub config file to update (\"-\" for stdin)"), |
3776 | _("path") }, |
3777 | { "copy-default", 0, 0, ©Default, 0, |
3778 | _("use the default boot entry as a template for the new entry " |
3779 | "being added; if the default is not a linux image, or if " |
3780 | "the kernel referenced by the default image does not exist, " |
3781 | "the first linux entry whose kernel does exist is used as the " |
3782 | "template"), NULL }, |
3783 | { "debug", 0, 0, &debug, 0, |
3784 | _("print debugging information for failures") }, |
3785 | { "default-kernel", 0, 0, &displayDefault, 0, |
3786 | _("display the path of the default kernel") }, |
3787 | { "default-index", 0, 0, &displayDefaultIndex, 0, |
3788 | _("display the index of the default kernel") }, |
3789 | { "default-title", 0, 0, &displayDefaultTitle, 0, |
3790 | _("display the title of the default kernel") }, |
3791 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
3792 | _("configure elilo bootloader") }, |
3793 | { "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
3794 | _("configure extlinux bootloader (from syslinux)") }, |
3795 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
3796 | _("configure grub bootloader") }, |
3797 | { "grub2", 0, POPT_ARG_NONE, &configureGrub2, 0, |
3798 | _("configure grub2 bootloader") }, |
3799 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
3800 | _("display boot information for specified kernel"), |
3801 | _("kernel-path") }, |
3802 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
3803 | _("initrd image for the new kernel"), _("initrd-path") }, |
3804 | { "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
3805 | _("auxilliary initrd image for things other than the new kernel"), _("initrd-path") }, |
3806 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
3807 | _("configure lilo bootloader") }, |
3808 | { "make-default", 0, 0, &makeDefault, 0, |
3809 | _("make the newly added entry the default boot entry"), NULL }, |
3810 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
3811 | _("path to output updated config file (\"-\" for stdout)"), |
3812 | _("path") }, |
3813 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
3814 | _("remove kernel arguments"), NULL }, |
3815 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
3816 | _("remove multiboot kernel arguments"), NULL }, |
3817 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
3818 | _("remove all entries for the specified kernel"), |
3819 | _("kernel-path") }, |
3820 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
3821 | _("remove all entries for the specified multiboot kernel"), NULL }, |
3822 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
3823 | _("make the first entry referencing the specified kernel " |
3824 | "the default"), _("kernel-path") }, |
3825 | { "set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0, |
3826 | _("make the given entry index the default entry"), |
3827 | _("entry-index") }, |
3828 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
3829 | _("configure silo bootloader") }, |
3830 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
3831 | _("title to use for the new kernel entry"), _("entry-title") }, |
3832 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
3833 | _("updated information for the specified kernel"), |
3834 | _("kernel-path") }, |
3835 | { "version", 'v', 0, NULL, 'v', |
3836 | _("print the version of this program and exit"), NULL }, |
3837 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
3838 | _("configure yaboot bootloader") }, |
3839 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
3840 | _("configure zipl bootloader") }, |
3841 | POPT_AUTOHELP |
3842 | { 0, 0, 0, 0, 0 } |
3843 | }; |
3844 | |
3845 | useextlinuxmenu=0; |
3846 | |
3847 | signal(SIGSEGV, traceback); |
3848 | |
3849 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
3850 | poptReadDefaultConfig(optCon, 1); |
3851 | |
3852 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
3853 | switch (arg) { |
3854 | case 'v': |
3855 | printf("grubby version %s\n", VERSION); |
3856 | exit(0); |
3857 | break; |
3858 | case 'i': |
3859 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { |
3860 | extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon)); |
3861 | } else { |
3862 | fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount); |
3863 | return 1; |
3864 | } |
3865 | break; |
3866 | } |
3867 | } |
3868 | |
3869 | if (arg < -1) { |
3870 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
3871 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
3872 | poptStrerror(arg)); |
3873 | return 1; |
3874 | } |
3875 | |
3876 | if ((chptr = poptGetArg(optCon))) { |
3877 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
3878 | return 1; |
3879 | } |
3880 | |
3881 | if ((configureLilo + configureGrub2 + configureGrub + configureELilo + |
3882 | configureYaboot + configureSilo + configureZipl + |
3883 | configureExtLinux ) > 1) { |
3884 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); |
3885 | return 1; |
3886 | } else if (bootloaderProbe && grubConfig) { |
3887 | fprintf(stderr, |
3888 | _("grubby: cannot specify config file with --bootloader-probe\n")); |
3889 | return 1; |
3890 | } else if (configureGrub2) { |
3891 | cfi = &grub2ConfigType; |
3892 | } else if (configureLilo) { |
3893 | cfi = &liloConfigType; |
3894 | } else if (configureGrub) { |
3895 | cfi = &grubConfigType; |
3896 | } else if (configureELilo) { |
3897 | cfi = &eliloConfigType; |
3898 | } else if (configureYaboot) { |
3899 | cfi = &yabootConfigType; |
3900 | } else if (configureSilo) { |
3901 | cfi = &siloConfigType; |
3902 | } else if (configureZipl) { |
3903 | cfi = &ziplConfigType; |
3904 | } else if (configureExtLinux) { |
3905 | cfi = &extlinuxConfigType; |
3906 | useextlinuxmenu=1; |
3907 | } |
3908 | |
3909 | if (!cfi) { |
3910 | if (grub2FindConfig(&grub2ConfigType)) |
3911 | cfi = &grub2ConfigType; |
3912 | else |
3913 | #ifdef __ia64__ |
3914 | cfi = &eliloConfigType; |
3915 | #elif __powerpc__ |
3916 | cfi = &yabootConfigType; |
3917 | #elif __sparc__ |
3918 | cfi = &siloConfigType; |
3919 | #elif __s390__ |
3920 | cfi = &ziplConfigType; |
3921 | #elif __s390x__ |
3922 | cfi = &ziplConfigtype; |
3923 | #else |
3924 | cfi = &grubConfigType; |
3925 | #endif |
3926 | } |
3927 | |
3928 | if (!grubConfig) { |
3929 | if (cfi->findConfig) |
3930 | grubConfig = cfi->findConfig(cfi); |
3931 | if (!grubConfig) |
3932 | grubConfig = cfi->defaultConfig; |
3933 | } |
3934 | |
3935 | if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion || |
3936 | newKernelPath || removeKernelPath || makeDefault || |
3937 | defaultKernel || displayDefaultIndex || displayDefaultTitle || |
3938 | (defaultIndex >= 0))) { |
3939 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " |
3940 | "specified option")); |
3941 | return 1; |
3942 | } |
3943 | |
3944 | if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath || |
3945 | removeKernelPath)) { |
3946 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
3947 | "be used when adding or removing kernels\n")); |
3948 | return 1; |
3949 | } |
3950 | |
3951 | if (newKernelPath && !newKernelTitle) { |
3952 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
3953 | return 1; |
3954 | } else if (!newKernelPath && (newKernelTitle || copyDefault || |
3955 | (newKernelInitrd && !updateKernelPath)|| |
3956 | makeDefault || extraInitrdCount > 0)) { |
3957 | fprintf(stderr, _("grubby: kernel path expected\n")); |
3958 | return 1; |
3959 | } |
3960 | |
3961 | if (newKernelPath && updateKernelPath) { |
3962 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
3963 | "not be used together")); |
3964 | return 1; |
3965 | } |
3966 | |
3967 | if (makeDefault && defaultKernel) { |
3968 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
3969 | "may not be used together\n")); |
3970 | return 1; |
3971 | } else if (defaultKernel && removeKernelPath && |
3972 | !strcmp(defaultKernel, removeKernelPath)) { |
3973 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); |
3974 | return 1; |
3975 | } else if (defaultKernel && newKernelPath && |
3976 | !strcmp(defaultKernel, newKernelPath)) { |
3977 | makeDefault = 1; |
3978 | defaultKernel = NULL; |
3979 | } |
3980 | else if (defaultKernel && (defaultIndex >= 0)) { |
3981 | fprintf(stderr, _("grubby: --set-default and --set-default-index " |
3982 | "may not be used together\n")); |
3983 | return 1; |
3984 | } |
3985 | |
3986 | if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) { |
3987 | fprintf(stderr, _("grubby: output file must be specified if stdin " |
3988 | "is used\n")); |
3989 | return 1; |
3990 | } |
3991 | |
3992 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel |
3993 | && !kernelInfo && !bootloaderProbe && !updateKernelPath |
3994 | && !removeMBKernel && !displayDefaultIndex && !displayDefaultTitle |
3995 | && (defaultIndex == -1)) { |
3996 | fprintf(stderr, _("grubby: no action specified\n")); |
3997 | return 1; |
3998 | } |
3999 | |
4000 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
4001 | |
4002 | if (cfi->needsBootPrefix) { |
4003 | if (!bootPrefix) { |
4004 | bootPrefix = findBootPrefix(); |
4005 | if (!bootPrefix) return 1; |
4006 | } else { |
4007 | /* this shouldn't end with a / */ |
4008 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
4009 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
4010 | } |
4011 | } else { |
4012 | bootPrefix = ""; |
4013 | } |
4014 | |
4015 | if (!cfi->mbAllowExtraInitRds && |
4016 | extraInitrdCount > 0) { |
4017 | fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig); |
4018 | return 1; |
4019 | } |
4020 | |
4021 | if (bootloaderProbe) { |
4022 | int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0; |
4023 | struct grubConfig * lconfig, * gconfig, * yconfig, * econfig; |
4024 | |
4025 | const char *grub2config = grub2FindConfig(&grub2ConfigType); |
4026 | if (grub2config) { |
4027 | gconfig = readConfig(grub2config, &grub2ConfigType); |
4028 | if (!gconfig) |
4029 | gr2c = 1; |
4030 | else |
4031 | gr2c = checkForGrub2(gconfig); |
4032 | } |
4033 | |
4034 | const char *grubconfig = grubFindConfig(&grubConfigType); |
4035 | if (!access(grubconfig, F_OK)) { |
4036 | gconfig = readConfig(grubconfig, &grubConfigType); |
4037 | if (!gconfig) |
4038 | grc = 1; |
4039 | else |
4040 | grc = checkForGrub(gconfig); |
4041 | } |
4042 | |
4043 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
4044 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); |
4045 | if (!lconfig) |
4046 | lrc = 1; |
4047 | else |
4048 | lrc = checkForLilo(lconfig); |
4049 | } |
4050 | |
4051 | if (!access(eliloConfigType.defaultConfig, F_OK)) { |
4052 | econfig = readConfig(eliloConfigType.defaultConfig, |
4053 | &eliloConfigType); |
4054 | if (!econfig) |
4055 | erc = 1; |
4056 | else |
4057 | erc = checkForElilo(econfig); |
4058 | } |
4059 | |
4060 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
4061 | lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType); |
4062 | if (!lconfig) |
4063 | extrc = 1; |
4064 | else |
4065 | extrc = checkForExtLinux(lconfig); |
4066 | } |
4067 | |
4068 | |
4069 | if (!access(yabootConfigType.defaultConfig, F_OK)) { |
4070 | yconfig = readConfig(yabootConfigType.defaultConfig, |
4071 | &yabootConfigType); |
4072 | if (!yconfig) |
4073 | yrc = 1; |
4074 | else |
4075 | yrc = checkForYaboot(yconfig); |
4076 | } |
4077 | |
4078 | if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1 || |
4079 | erc == 1) |
4080 | return 1; |
4081 | |
4082 | if (lrc == 2) printf("lilo\n"); |
4083 | if (gr2c == 2) printf("grub2\n"); |
4084 | if (grc == 2) printf("grub\n"); |
4085 | if (extrc == 2) printf("extlinux\n"); |
4086 | if (yrc == 2) printf("yaboot\n"); |
4087 | if (erc == 2) printf("elilo\n"); |
4088 | |
4089 | return 0; |
4090 | } |
4091 | |
4092 | config = readConfig(grubConfig, cfi); |
4093 | if (!config) return 1; |
4094 | |
4095 | if (displayDefault) { |
4096 | struct singleLine * line; |
4097 | struct singleEntry * entry; |
4098 | char * rootspec; |
4099 | |
4100 | if (config->defaultImage == -1) return 0; |
4101 | entry = findEntryByIndex(config, config->defaultImage); |
4102 | if (!entry) return 0; |
4103 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; |
4104 | |
4105 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
4106 | if (!line) return 0; |
4107 | |
4108 | rootspec = getRootSpecifier(line->elements[1].item); |
4109 | printf("%s%s\n", bootPrefix, line->elements[1].item + |
4110 | ((rootspec != NULL) ? strlen(rootspec) : 0)); |
4111 | |
4112 | return 0; |
4113 | |
4114 | } else if (displayDefaultTitle) { |
4115 | struct singleLine * line; |
4116 | struct singleEntry * entry; |
4117 | |
4118 | if (config->defaultImage == -1) return 0; |
4119 | entry = findEntryByIndex(config, config->defaultImage); |
4120 | if (!entry) return 0; |
4121 | |
4122 | if (!configureGrub2) { |
4123 | line = getLineByType(LT_TITLE, entry->lines); |
4124 | if (!line) return 0; |
4125 | printf("%s\n", line->elements[1].item); |
4126 | |
4127 | } else { |
4128 | char * title; |
4129 | |
4130 | dbgPrintf("This is GRUB2, default title is embeded in menuentry\n"); |
4131 | line = getLineByType(LT_MENUENTRY, entry->lines); |
4132 | if (!line) return 0; |
4133 | title = grub2ExtractTitle(line); |
4134 | if (title) |
4135 | printf("%s\n", title); |
4136 | } |
4137 | return 0; |
4138 | |
4139 | } else if (displayDefaultIndex) { |
4140 | if (config->defaultImage == -1) return 0; |
4141 | printf("%i\n", config->defaultImage); |
4142 | |
4143 | } else if (kernelInfo) |
4144 | return displayInfo(config, kernelInfo, bootPrefix); |
4145 | |
4146 | if (copyDefault) { |
4147 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
4148 | if (!template) return 1; |
4149 | } |
4150 | |
4151 | markRemovedImage(config, removeKernelPath, bootPrefix); |
4152 | markRemovedImage(config, removeMBKernel, bootPrefix); |
4153 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, |
4154 | bootPrefix, flags, defaultIndex); |
4155 | setFallbackImage(config, newKernelPath != NULL); |
4156 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
4157 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; |
4158 | if (updateKernelPath && newKernelInitrd) { |
4159 | if (updateInitrd(config, updateKernelPath, bootPrefix, |
4160 | newKernelInitrd)) return 1; |
4161 | } |
4162 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
4163 | newKernelTitle, newKernelArgs, newKernelInitrd, |
4164 | (const char **)extraInitrds, extraInitrdCount, |
4165 | newMBKernel, newMBKernelArgs)) return 1; |
4166 | |
4167 | |
4168 | if (numEntries(config) == 0) { |
4169 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " |
4170 | "Not writing out new config.\n")); |
4171 | return 1; |
4172 | } |
4173 | |
4174 | if (!outputFile) |
4175 | outputFile = (char *)grubConfig; |
4176 | |
4177 | return writeConfig(config, outputFile, bootPrefix); |
4178 | } |