Contents of /tags/grubby-8_3/grubby.c
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Sat Feb 18 00:29:24 2012 UTC (12 years, 7 months ago) by niro
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Sat Feb 18 00:29:24 2012 UTC (12 years, 7 months ago) by niro
File MIME type: text/plain
File size: 97866 byte(s)
tagged 'grubby-8_3'
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 | #define _(A) (A) |
50 | |
51 | #define MAX_EXTRA_INITRDS 16 /* code segment checked by --bootloader-probe */ |
52 | #define CODE_SEG_SIZE 128 /* code segment checked by --bootloader-probe */ |
53 | |
54 | /* comments get lumped in with indention */ |
55 | struct lineElement { |
56 | char * item; |
57 | char * indent; |
58 | }; |
59 | |
60 | enum lineType_e { |
61 | LT_WHITESPACE = 1 << 0, |
62 | LT_TITLE = 1 << 1, |
63 | LT_KERNEL = 1 << 2, |
64 | LT_INITRD = 1 << 3, |
65 | LT_HYPER = 1 << 4, |
66 | LT_DEFAULT = 1 << 5, |
67 | LT_MBMODULE = 1 << 6, |
68 | LT_ROOT = 1 << 7, |
69 | LT_FALLBACK = 1 << 8, |
70 | LT_KERNELARGS = 1 << 9, |
71 | LT_BOOT = 1 << 10, |
72 | LT_BOOTROOT = 1 << 11, |
73 | LT_LBA = 1 << 12, |
74 | LT_OTHER = 1 << 13, |
75 | LT_GENERIC = 1 << 14, |
76 | LT_ECHO = 1 << 16, |
77 | LT_MENUENTRY = 1 << 17, |
78 | LT_ENTRY_END = 1 << 18, |
79 | LT_SET_VARIABLE = 1 << 19, |
80 | LT_UNKNOWN = 1 << 20, |
81 | }; |
82 | |
83 | struct singleLine { |
84 | char * indent; |
85 | int numElements; |
86 | struct lineElement * elements; |
87 | struct singleLine * next; |
88 | enum lineType_e type; |
89 | }; |
90 | |
91 | struct singleEntry { |
92 | struct singleLine * lines; |
93 | int skip; |
94 | int multiboot; |
95 | struct singleEntry * next; |
96 | }; |
97 | |
98 | #define GRUBBY_BADIMAGE_OKAY (1 << 0) |
99 | |
100 | #define GRUB_CONFIG_NO_DEFAULT (1 << 0) /* don't write out default=0 */ |
101 | |
102 | /* These defines are (only) used in addNewKernel() */ |
103 | #define NEED_KERNEL (1 << 0) |
104 | #define NEED_INITRD (1 << 1) |
105 | #define NEED_TITLE (1 << 2) |
106 | #define NEED_ARGS (1 << 3) |
107 | #define NEED_MB (1 << 4) |
108 | #define NEED_END (1 << 5) |
109 | |
110 | #define MAIN_DEFAULT (1 << 0) |
111 | #define DEFAULT_SAVED -2 |
112 | |
113 | struct keywordTypes { |
114 | char * key; |
115 | enum lineType_e type; |
116 | char nextChar; |
117 | char separatorChar; |
118 | }; |
119 | |
120 | struct configFileInfo; |
121 | |
122 | typedef const char *(*findConfigFunc)(struct configFileInfo *); |
123 | typedef const int (*writeLineFunc)(struct configFileInfo *, |
124 | struct singleLine *line); |
125 | |
126 | struct configFileInfo { |
127 | char * defaultConfig; |
128 | findConfigFunc findConfig; |
129 | writeLineFunc writeLine; |
130 | struct keywordTypes * keywords; |
131 | int defaultIsIndex; |
132 | int defaultIsVariable; |
133 | int defaultSupportSaved; |
134 | enum lineType_e entryStart; |
135 | enum lineType_e entryEnd; |
136 | int needsBootPrefix; |
137 | int argsInQuotes; |
138 | int maxTitleLength; |
139 | int titleBracketed; |
140 | int titlePosition; |
141 | int mbHyperFirst; |
142 | int mbInitRdIsModule; |
143 | int mbConcatArgs; |
144 | int mbAllowExtraInitRds; |
145 | }; |
146 | |
147 | struct keywordTypes grubKeywords[] = { |
148 | { "title", LT_TITLE, ' ' }, |
149 | { "root", LT_BOOTROOT, ' ' }, |
150 | { "default", LT_DEFAULT, ' ' }, |
151 | { "fallback", LT_FALLBACK, ' ' }, |
152 | { "kernel", LT_KERNEL, ' ' }, |
153 | { "initrd", LT_INITRD, ' ', ' ' }, |
154 | { "module", LT_MBMODULE, ' ' }, |
155 | { "kernel", LT_HYPER, ' ' }, |
156 | { NULL, 0, 0 }, |
157 | }; |
158 | |
159 | struct configFileInfo grubConfigType = { |
160 | .defaultConfig = "/boot/grub/grub.conf", |
161 | .keywords = grubKeywords, |
162 | .defaultIsIndex = 1, |
163 | .defaultSupportSaved = 1, |
164 | .entryStart = LT_TITLE, |
165 | .needsBootPrefix = 1, |
166 | .mbHyperFirst = 1, |
167 | .mbInitRdIsModule = 1, |
168 | .mbAllowExtraInitRds = 1, |
169 | }; |
170 | |
171 | struct keywordTypes grub2Keywords[] = { |
172 | { "menuentry", LT_MENUENTRY, ' ' }, |
173 | { "}", LT_ENTRY_END, ' ' }, |
174 | { "echo", LT_ECHO, ' ' }, |
175 | { "set", LT_SET_VARIABLE,' ', '=' }, |
176 | { "root", LT_BOOTROOT, ' ' }, |
177 | { "default", LT_DEFAULT, ' ' }, |
178 | { "fallback", LT_FALLBACK, ' ' }, |
179 | { "linux", LT_KERNEL, ' ' }, |
180 | { "initrd", LT_INITRD, ' ', ' ' }, |
181 | { "module", LT_MBMODULE, ' ' }, |
182 | { "kernel", LT_HYPER, ' ' }, |
183 | { NULL, 0, 0 }, |
184 | }; |
185 | |
186 | const char *grub2FindConfig(struct configFileInfo *cfi) { |
187 | static const char *configFiles[] = { |
188 | "/boot/grub/grub-efi.cfg", |
189 | "/boot/grub/grub.cfg", |
190 | NULL |
191 | }; |
192 | static int i = -1; |
193 | |
194 | if (i == -1) { |
195 | for (i = 0; configFiles[i] != NULL; i++) { |
196 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
197 | if (!access(configFiles[i], R_OK)) { |
198 | dbgPrintf("found\n"); |
199 | return configFiles[i]; |
200 | } |
201 | dbgPrintf("not found\n"); |
202 | } |
203 | } |
204 | return configFiles[i]; |
205 | } |
206 | |
207 | struct configFileInfo grub2ConfigType = { |
208 | .findConfig = grub2FindConfig, |
209 | .keywords = grub2Keywords, |
210 | .defaultIsIndex = 1, |
211 | .defaultSupportSaved = 0, |
212 | .defaultIsVariable = 1, |
213 | .entryStart = LT_MENUENTRY, |
214 | .entryEnd = LT_ENTRY_END, |
215 | .titlePosition = 1, |
216 | .needsBootPrefix = 1, |
217 | .mbHyperFirst = 1, |
218 | .mbInitRdIsModule = 1, |
219 | .mbAllowExtraInitRds = 1, |
220 | }; |
221 | |
222 | struct keywordTypes yabootKeywords[] = { |
223 | { "label", LT_TITLE, '=' }, |
224 | { "root", LT_ROOT, '=' }, |
225 | { "default", LT_DEFAULT, '=' }, |
226 | { "image", LT_KERNEL, '=' }, |
227 | { "bsd", LT_GENERIC, '=' }, |
228 | { "macos", LT_GENERIC, '=' }, |
229 | { "macosx", LT_GENERIC, '=' }, |
230 | { "magicboot", LT_GENERIC, '=' }, |
231 | { "darwin", LT_GENERIC, '=' }, |
232 | { "timeout", LT_GENERIC, '=' }, |
233 | { "install", LT_GENERIC, '=' }, |
234 | { "fstype", LT_GENERIC, '=' }, |
235 | { "hfstype", LT_GENERIC, '=' }, |
236 | { "delay", LT_GENERIC, '=' }, |
237 | { "defaultos", LT_GENERIC, '=' }, |
238 | { "init-message", LT_GENERIC, '=' }, |
239 | { "enablecdboot", LT_GENERIC, ' ' }, |
240 | { "enableofboot", LT_GENERIC, ' ' }, |
241 | { "enablenetboot", LT_GENERIC, ' ' }, |
242 | { "nonvram", LT_GENERIC, ' ' }, |
243 | { "hide", LT_GENERIC, ' ' }, |
244 | { "protect", LT_GENERIC, ' ' }, |
245 | { "nobless", LT_GENERIC, ' ' }, |
246 | { "nonvram", LT_GENERIC, ' ' }, |
247 | { "brokenosx", LT_GENERIC, ' ' }, |
248 | { "usemount", LT_GENERIC, ' ' }, |
249 | { "mntpoint", LT_GENERIC, '=' }, |
250 | { "partition", LT_GENERIC, '=' }, |
251 | { "device", LT_GENERIC, '=' }, |
252 | { "fstype", LT_GENERIC, '=' }, |
253 | { "initrd", LT_INITRD, '=', ';' }, |
254 | { "append", LT_KERNELARGS, '=' }, |
255 | { "boot", LT_BOOT, '=' }, |
256 | { "lba", LT_LBA, ' ' }, |
257 | { NULL, 0, 0 }, |
258 | }; |
259 | |
260 | struct keywordTypes liloKeywords[] = { |
261 | { "label", LT_TITLE, '=' }, |
262 | { "root", LT_ROOT, '=' }, |
263 | { "default", LT_DEFAULT, '=' }, |
264 | { "image", LT_KERNEL, '=' }, |
265 | { "other", LT_OTHER, '=' }, |
266 | { "initrd", LT_INITRD, '=' }, |
267 | { "append", LT_KERNELARGS, '=' }, |
268 | { "boot", LT_BOOT, '=' }, |
269 | { "lba", LT_LBA, ' ' }, |
270 | { NULL, 0, 0 }, |
271 | }; |
272 | |
273 | struct keywordTypes eliloKeywords[] = { |
274 | { "label", LT_TITLE, '=' }, |
275 | { "root", LT_ROOT, '=' }, |
276 | { "default", LT_DEFAULT, '=' }, |
277 | { "image", LT_KERNEL, '=' }, |
278 | { "initrd", LT_INITRD, '=' }, |
279 | { "append", LT_KERNELARGS, '=' }, |
280 | { "vmm", LT_HYPER, '=' }, |
281 | { NULL, 0, 0 }, |
282 | }; |
283 | |
284 | struct keywordTypes siloKeywords[] = { |
285 | { "label", LT_TITLE, '=' }, |
286 | { "root", LT_ROOT, '=' }, |
287 | { "default", LT_DEFAULT, '=' }, |
288 | { "image", LT_KERNEL, '=' }, |
289 | { "other", LT_OTHER, '=' }, |
290 | { "initrd", LT_INITRD, '=' }, |
291 | { "append", LT_KERNELARGS, '=' }, |
292 | { "boot", LT_BOOT, '=' }, |
293 | { NULL, 0, 0 }, |
294 | }; |
295 | |
296 | struct keywordTypes ziplKeywords[] = { |
297 | { "target", LT_BOOTROOT, '=' }, |
298 | { "image", LT_KERNEL, '=' }, |
299 | { "ramdisk", LT_INITRD, '=' }, |
300 | { "parameters", LT_KERNELARGS, '=' }, |
301 | { "default", LT_DEFAULT, '=' }, |
302 | { NULL, 0, 0 }, |
303 | }; |
304 | |
305 | struct keywordTypes extlinuxKeywords[] = { |
306 | { "label", LT_TITLE, ' ' }, |
307 | { "root", LT_ROOT, ' ' }, |
308 | { "default", LT_DEFAULT, ' ' }, |
309 | { "kernel", LT_KERNEL, ' ' }, |
310 | { "initrd", LT_INITRD, ' ', ',' }, |
311 | { "append", LT_KERNELARGS, ' ' }, |
312 | { "prompt", LT_UNKNOWN, ' ' }, |
313 | { NULL, 0, 0 }, |
314 | }; |
315 | int useextlinuxmenu; |
316 | struct configFileInfo eliloConfigType = { |
317 | .defaultConfig = "/boot/efi/EFI/redhat/elilo.conf", |
318 | .keywords = eliloKeywords, |
319 | .entryStart = LT_KERNEL, |
320 | .needsBootPrefix = 1, |
321 | .argsInQuotes = 1, |
322 | .mbConcatArgs = 1, |
323 | }; |
324 | |
325 | struct configFileInfo liloConfigType = { |
326 | .defaultConfig = "/etc/lilo.conf", |
327 | .keywords = liloKeywords, |
328 | .entryStart = LT_KERNEL, |
329 | .argsInQuotes = 1, |
330 | .maxTitleLength = 15, |
331 | }; |
332 | |
333 | struct configFileInfo yabootConfigType = { |
334 | .defaultConfig = "/etc/yaboot.conf", |
335 | .keywords = yabootKeywords, |
336 | .entryStart = LT_KERNEL, |
337 | .needsBootPrefix = 1, |
338 | .argsInQuotes = 1, |
339 | .maxTitleLength = 15, |
340 | .mbAllowExtraInitRds = 1, |
341 | }; |
342 | |
343 | struct configFileInfo siloConfigType = { |
344 | .defaultConfig = "/etc/silo.conf", |
345 | .keywords = siloKeywords, |
346 | .entryStart = LT_KERNEL, |
347 | .needsBootPrefix = 1, |
348 | .argsInQuotes = 1, |
349 | .maxTitleLength = 15, |
350 | }; |
351 | |
352 | struct configFileInfo ziplConfigType = { |
353 | .defaultConfig = "/etc/zipl.conf", |
354 | .keywords = ziplKeywords, |
355 | .entryStart = LT_TITLE, |
356 | .argsInQuotes = 1, |
357 | .titleBracketed = 1, |
358 | }; |
359 | |
360 | struct configFileInfo extlinuxConfigType = { |
361 | .defaultConfig = "/boot/extlinux/extlinux.conf", |
362 | .keywords = extlinuxKeywords, |
363 | .entryStart = LT_TITLE, |
364 | .needsBootPrefix = 1, |
365 | .maxTitleLength = 255, |
366 | .mbAllowExtraInitRds = 1, |
367 | }; |
368 | |
369 | struct grubConfig { |
370 | struct singleLine * theLines; |
371 | struct singleEntry * entries; |
372 | char * primaryIndent; |
373 | char * secondaryIndent; |
374 | int defaultImage; /* -1 if none specified -- this value is |
375 | * written out, overriding original */ |
376 | int fallbackImage; /* just like defaultImage */ |
377 | int flags; |
378 | struct configFileInfo * cfi; |
379 | }; |
380 | |
381 | blkid_cache blkid; |
382 | |
383 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); |
384 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, |
385 | const char * path, const char * prefix, |
386 | int * index); |
387 | static int readFile(int fd, char ** bufPtr); |
388 | static void lineInit(struct singleLine * line); |
389 | struct singleLine * lineDup(struct singleLine * line); |
390 | static void lineFree(struct singleLine * line); |
391 | static int lineWrite(FILE * out, struct singleLine * line, |
392 | struct configFileInfo * cfi); |
393 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
394 | struct configFileInfo * cfi); |
395 | static char * getRootSpecifier(char * str); |
396 | static void requote(struct singleLine *line, struct configFileInfo * cfi); |
397 | static void insertElement(struct singleLine * line, |
398 | const char * item, int insertHere, |
399 | struct configFileInfo * cfi); |
400 | static void removeElement(struct singleLine * line, int removeHere); |
401 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
402 | struct configFileInfo * cfi); |
403 | static enum lineType_e getTypeByKeyword(char * keyword, |
404 | struct configFileInfo * cfi); |
405 | static struct singleLine * getLineByType(enum lineType_e type, |
406 | struct singleLine * line); |
407 | static int checkForExtLinux(struct grubConfig * config); |
408 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
409 | struct singleLine * tmplLine, |
410 | struct singleLine * prevLine, |
411 | const char * val, |
412 | struct configFileInfo * cfi); |
413 | struct singleLine * addLine(struct singleEntry * entry, |
414 | struct configFileInfo * cfi, |
415 | enum lineType_e type, char * defaultIndent, |
416 | const char * val); |
417 | |
418 | static char * sdupprintf(const char *format, ...) |
419 | #ifdef __GNUC__ |
420 | __attribute__ ((format (printf, 1, 2))); |
421 | #else |
422 | ; |
423 | #endif |
424 | |
425 | static char * sdupprintf(const char *format, ...) { |
426 | char *buf = NULL; |
427 | char c; |
428 | va_list args; |
429 | size_t size = 0; |
430 | va_start(args, format); |
431 | |
432 | /* XXX requires C99 vsnprintf behavior */ |
433 | size = vsnprintf(&c, 1, format, args) + 1; |
434 | if (size == -1) { |
435 | printf("ERROR: vsnprintf behavior is not C99\n"); |
436 | abort(); |
437 | } |
438 | |
439 | va_end(args); |
440 | va_start(args, format); |
441 | |
442 | buf = malloc(size); |
443 | if (buf == NULL) |
444 | return NULL; |
445 | vsnprintf(buf, size, format, args); |
446 | va_end (args); |
447 | |
448 | return buf; |
449 | } |
450 | |
451 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
452 | struct configFileInfo * cfi) { |
453 | struct keywordTypes * kw; |
454 | for (kw = cfi->keywords; kw->key; kw++) { |
455 | if (kw->type == type) |
456 | return kw; |
457 | } |
458 | return NULL; |
459 | } |
460 | |
461 | static char *getKeyByType(enum lineType_e type, struct configFileInfo * cfi) { |
462 | struct keywordTypes *kt = getKeywordByType(type, cfi); |
463 | if (kt) |
464 | return kt->key; |
465 | return "unknown"; |
466 | } |
467 | |
468 | static char * getpathbyspec(char *device) { |
469 | if (!blkid) |
470 | blkid_get_cache(&blkid, NULL); |
471 | |
472 | return blkid_get_devname(blkid, device, NULL); |
473 | } |
474 | |
475 | static char * getuuidbydev(char *device) { |
476 | if (!blkid) |
477 | blkid_get_cache(&blkid, NULL); |
478 | |
479 | return blkid_get_tag_value(blkid, "UUID", device); |
480 | } |
481 | |
482 | static enum lineType_e getTypeByKeyword(char * keyword, |
483 | struct configFileInfo * cfi) { |
484 | struct keywordTypes * kw; |
485 | for (kw = cfi->keywords; kw->key; kw++) { |
486 | if (!strcmp(keyword, kw->key)) |
487 | return kw->type; |
488 | } |
489 | return LT_UNKNOWN; |
490 | } |
491 | |
492 | static struct singleLine * getLineByType(enum lineType_e type, |
493 | struct singleLine * line) { |
494 | dbgPrintf("getLineByType(%d): ", type); |
495 | for (; line; line = line->next) { |
496 | dbgPrintf("%d:%s ", line->type, |
497 | line->numElements ? line->elements[0].item : "(empty)"); |
498 | if (line->type & type) break; |
499 | } |
500 | dbgPrintf(line ? "\n" : " (failed)\n"); |
501 | return line; |
502 | } |
503 | |
504 | static int isBracketedTitle(struct singleLine * line) { |
505 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
506 | int len = strlen(line->elements[0].item); |
507 | if (*(line->elements[0].item + len - 1) == ']') { |
508 | /* FIXME: this is a hack... */ |
509 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
510 | return 1; |
511 | } |
512 | } |
513 | } |
514 | return 0; |
515 | } |
516 | |
517 | static int isEntryStart(struct singleLine * line, |
518 | struct configFileInfo * cfi) { |
519 | return line->type == cfi->entryStart || line->type == LT_OTHER || |
520 | (cfi->titleBracketed && isBracketedTitle(line)); |
521 | } |
522 | |
523 | /* extract the title from within brackets (for zipl) */ |
524 | static char * extractTitle(struct singleLine * line) { |
525 | /* bracketed title... let's extract it (leaks a byte) */ |
526 | char * title; |
527 | title = strdup(line->elements[0].item); |
528 | title++; |
529 | *(title + strlen(title) - 1) = '\0'; |
530 | return title; |
531 | } |
532 | |
533 | static int readFile(int fd, char ** bufPtr) { |
534 | int alloced = 0, size = 0, i = 0; |
535 | char * buf = NULL; |
536 | |
537 | do { |
538 | size += i; |
539 | if ((size + 1024) > alloced) { |
540 | alloced += 4096; |
541 | buf = realloc(buf, alloced + 1); |
542 | } |
543 | } while ((i = read(fd, buf + size, 1024)) > 0); |
544 | |
545 | if (i < 0) { |
546 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); |
547 | free(buf); |
548 | return 1; |
549 | } |
550 | |
551 | buf = realloc(buf, size + 2); |
552 | if (size == 0) |
553 | buf[size++] = '\n'; |
554 | else |
555 | if (buf[size - 1] != '\n') |
556 | buf[size++] = '\n'; |
557 | buf[size] = '\0'; |
558 | |
559 | *bufPtr = buf; |
560 | |
561 | return 0; |
562 | } |
563 | |
564 | static void lineInit(struct singleLine * line) { |
565 | line->indent = NULL; |
566 | line->elements = NULL; |
567 | line->numElements = 0; |
568 | line->next = NULL; |
569 | } |
570 | |
571 | struct singleLine * lineDup(struct singleLine * line) { |
572 | int i; |
573 | struct singleLine * newLine = malloc(sizeof(*newLine)); |
574 | |
575 | newLine->indent = strdup(line->indent); |
576 | newLine->next = NULL; |
577 | newLine->type = line->type; |
578 | newLine->numElements = line->numElements; |
579 | newLine->elements = malloc(sizeof(*newLine->elements) * |
580 | newLine->numElements); |
581 | |
582 | for (i = 0; i < newLine->numElements; i++) { |
583 | newLine->elements[i].indent = strdup(line->elements[i].indent); |
584 | newLine->elements[i].item = strdup(line->elements[i].item); |
585 | } |
586 | |
587 | return newLine; |
588 | } |
589 | |
590 | static void lineFree(struct singleLine * line) { |
591 | int i; |
592 | |
593 | if (line->indent) free(line->indent); |
594 | |
595 | for (i = 0; i < line->numElements; i++) { |
596 | free(line->elements[i].item); |
597 | free(line->elements[i].indent); |
598 | } |
599 | |
600 | if (line->elements) free(line->elements); |
601 | lineInit(line); |
602 | } |
603 | |
604 | static int lineWrite(FILE * out, struct singleLine * line, |
605 | struct configFileInfo * cfi) { |
606 | int i; |
607 | |
608 | if (fprintf(out, "%s", line->indent) == -1) return -1; |
609 | |
610 | for (i = 0; i < line->numElements; i++) { |
611 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
612 | if (fputc('"', out) == EOF) return -1; |
613 | |
614 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; |
615 | if (i < line->numElements - 1) |
616 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; |
617 | } |
618 | |
619 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
620 | if (fputc('"', out) == EOF) return -1; |
621 | |
622 | if (fprintf(out, "\n") == -1) return -1; |
623 | |
624 | return 0; |
625 | } |
626 | |
627 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
628 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
629 | struct configFileInfo * cfi) { |
630 | char * end; |
631 | char * start = *bufPtr; |
632 | char * chptr; |
633 | int elementsAlloced = 0; |
634 | struct lineElement * element; |
635 | int first = 1; |
636 | |
637 | lineFree(line); |
638 | |
639 | end = strchr(start, '\n'); |
640 | *end = '\0'; |
641 | *bufPtr = end + 1; |
642 | |
643 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
644 | |
645 | line->indent = strndup(start, chptr - start); |
646 | start = chptr; |
647 | |
648 | while (start < end) { |
649 | /* we know !isspace(*start) */ |
650 | |
651 | if (elementsAlloced == line->numElements) { |
652 | elementsAlloced += 5; |
653 | line->elements = realloc(line->elements, |
654 | sizeof(*line->elements) * elementsAlloced); |
655 | } |
656 | |
657 | element = line->elements + line->numElements; |
658 | |
659 | chptr = start; |
660 | while (*chptr && !isspace(*chptr)) { |
661 | if (first && *chptr == '=') break; |
662 | chptr++; |
663 | } |
664 | element->item = strndup(start, chptr - start); |
665 | start = chptr; |
666 | |
667 | /* lilo actually accepts the pathological case of append = " foo " */ |
668 | if (*start == '=') |
669 | chptr = start + 1; |
670 | else |
671 | chptr = start; |
672 | |
673 | do { |
674 | for (; *chptr && isspace(*chptr); chptr++); |
675 | if (*chptr == '=') |
676 | chptr = chptr + 1; |
677 | } while (isspace(*chptr)); |
678 | |
679 | element->indent = strndup(start, chptr - start); |
680 | start = chptr; |
681 | |
682 | line->numElements++; |
683 | first = 0; |
684 | } |
685 | |
686 | if (!line->numElements) |
687 | line->type = LT_WHITESPACE; |
688 | else { |
689 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
690 | if (line->type == LT_UNKNOWN) { |
691 | /* zipl does [title] instead of something reasonable like all |
692 | * the other boot loaders. kind of ugly */ |
693 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
694 | line->type = LT_TITLE; |
695 | } |
696 | |
697 | /* this is awkward, but we need to be able to handle keywords |
698 | that begin with a # (specifically for #boot in grub.conf), |
699 | but still make comments lines with no elements (everything |
700 | stored in the indent */ |
701 | if (*line->elements[0].item == '#') { |
702 | char * fullLine; |
703 | int len; |
704 | int i; |
705 | |
706 | len = strlen(line->indent); |
707 | for (i = 0; i < line->numElements; i++) |
708 | len += strlen(line->elements[i].item) + |
709 | strlen(line->elements[i].indent); |
710 | |
711 | fullLine = malloc(len + 1); |
712 | strcpy(fullLine, line->indent); |
713 | free(line->indent); |
714 | line->indent = fullLine; |
715 | |
716 | for (i = 0; i < line->numElements; i++) { |
717 | strcat(fullLine, line->elements[i].item); |
718 | strcat(fullLine, line->elements[i].indent); |
719 | free(line->elements[i].item); |
720 | free(line->elements[i].indent); |
721 | } |
722 | |
723 | line->type = LT_WHITESPACE; |
724 | line->numElements = 0; |
725 | } |
726 | } else { |
727 | struct keywordTypes *kw; |
728 | |
729 | kw = getKeywordByType(line->type, cfi); |
730 | |
731 | /* space isn't the only separator, we need to split |
732 | * elements up more |
733 | */ |
734 | if (!isspace(kw->separatorChar)) { |
735 | int i; |
736 | char indent[2] = ""; |
737 | indent[0] = kw->separatorChar; |
738 | for (i = 1; i < line->numElements; i++) { |
739 | char *p; |
740 | int j; |
741 | int numNewElements; |
742 | |
743 | numNewElements = 0; |
744 | p = line->elements[i].item; |
745 | while (*p != '\0') { |
746 | if (*p == kw->separatorChar) |
747 | numNewElements++; |
748 | p++; |
749 | } |
750 | if (line->numElements + numNewElements >= elementsAlloced) { |
751 | elementsAlloced += numNewElements + 5; |
752 | line->elements = realloc(line->elements, |
753 | sizeof(*line->elements) * elementsAlloced); |
754 | } |
755 | |
756 | for (j = line->numElements; j > i; j--) { |
757 | line->elements[j + numNewElements] = line->elements[j]; |
758 | } |
759 | line->numElements += numNewElements; |
760 | |
761 | p = line->elements[i].item; |
762 | while (*p != '\0') { |
763 | |
764 | while (*p != kw->separatorChar && *p != '\0') p++; |
765 | if (*p == '\0') { |
766 | break; |
767 | } |
768 | |
769 | free(line->elements[i].indent); |
770 | line->elements[i].indent = strdup(indent); |
771 | *p++ = '\0'; |
772 | i++; |
773 | line->elements[i].item = strdup(p); |
774 | line->elements[i].indent = strdup(""); |
775 | p = line->elements[i].item; |
776 | } |
777 | } |
778 | } |
779 | } |
780 | } |
781 | |
782 | return 0; |
783 | } |
784 | |
785 | static struct grubConfig * readConfig(const char * inName, |
786 | struct configFileInfo * cfi) { |
787 | int in; |
788 | char * incoming = NULL, * head; |
789 | int rc; |
790 | int sawEntry = 0; |
791 | int movedLine = 0; |
792 | struct grubConfig * cfg; |
793 | struct singleLine * last = NULL, * line, * defaultLine = NULL; |
794 | char * end; |
795 | struct singleEntry * entry = NULL; |
796 | int i, len; |
797 | char * buf; |
798 | |
799 | if (!strcmp(inName, "-")) { |
800 | in = 0; |
801 | } else { |
802 | if ((in = open(inName, O_RDONLY)) < 0) { |
803 | fprintf(stderr, _("error opening %s for read: %s\n"), |
804 | inName, strerror(errno)); |
805 | return NULL; |
806 | } |
807 | } |
808 | |
809 | rc = readFile(in, &incoming); |
810 | close(in); |
811 | if (rc) return NULL; |
812 | |
813 | head = incoming; |
814 | cfg = malloc(sizeof(*cfg)); |
815 | cfg->primaryIndent = strdup(""); |
816 | cfg->secondaryIndent = strdup("\t"); |
817 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
818 | cfg->cfi = cfi; |
819 | cfg->theLines = NULL; |
820 | cfg->entries = NULL; |
821 | cfg->fallbackImage = 0; |
822 | |
823 | /* copy everything we have */ |
824 | while (*head) { |
825 | line = malloc(sizeof(*line)); |
826 | lineInit(line); |
827 | |
828 | if (getNextLine(&head, line, cfi)) { |
829 | free(line); |
830 | /* XXX memory leak of everything in cfg */ |
831 | return NULL; |
832 | } |
833 | |
834 | if (!sawEntry && line->numElements) { |
835 | free(cfg->primaryIndent); |
836 | cfg->primaryIndent = strdup(line->indent); |
837 | } else if (line->numElements) { |
838 | free(cfg->secondaryIndent); |
839 | cfg->secondaryIndent = strdup(line->indent); |
840 | } |
841 | |
842 | if (isEntryStart(line, cfi)) { |
843 | sawEntry = 1; |
844 | if (!entry) { |
845 | cfg->entries = malloc(sizeof(*entry)); |
846 | entry = cfg->entries; |
847 | } else { |
848 | entry->next = malloc(sizeof(*entry)); |
849 | entry = entry->next; |
850 | } |
851 | |
852 | entry->skip = 0; |
853 | entry->multiboot = 0; |
854 | entry->lines = NULL; |
855 | entry->next = NULL; |
856 | } |
857 | |
858 | if (line->type == LT_SET_VARIABLE) { |
859 | int i; |
860 | dbgPrintf("found 'set' command (%d elements): ", line->numElements); |
861 | dbgPrintf("%s", line->indent); |
862 | for (i = 0; i < line->numElements; i++) |
863 | dbgPrintf("%s\"%s\"", line->elements[i].indent, line->elements[i].item); |
864 | dbgPrintf("\n"); |
865 | struct keywordTypes *kwType = getKeywordByType(LT_DEFAULT, cfi); |
866 | if (kwType && line->numElements == 3 && |
867 | !strcmp(line->elements[1].item, kwType->key)) { |
868 | dbgPrintf("Line sets default config\n"); |
869 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
870 | defaultLine = line; |
871 | } |
872 | } else if (line->type == LT_DEFAULT && line->numElements == 2) { |
873 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
874 | defaultLine = line; |
875 | |
876 | } else if (line->type == LT_KERNEL) { |
877 | /* if by some freak chance this is multiboot and the "module" |
878 | * lines came earlier in the template, make sure to use LT_HYPER |
879 | * instead of LT_KERNEL now |
880 | */ |
881 | if (entry->multiboot) |
882 | line->type = LT_HYPER; |
883 | |
884 | } else if (line->type == LT_MBMODULE) { |
885 | /* go back and fix the LT_KERNEL line to indicate LT_HYPER |
886 | * instead, now that we know this is a multiboot entry. |
887 | * This only applies to grub, but that's the only place we |
888 | * should find LT_MBMODULE lines anyway. |
889 | */ |
890 | struct singleLine * l; |
891 | for (l = entry->lines; l; l = l->next) { |
892 | if (l->type == LT_HYPER) |
893 | break; |
894 | else if (l->type == LT_KERNEL) { |
895 | l->type = LT_HYPER; |
896 | break; |
897 | } |
898 | } |
899 | entry->multiboot = 1; |
900 | |
901 | } else if (line->type == LT_HYPER) { |
902 | entry->multiboot = 1; |
903 | |
904 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
905 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); |
906 | if (*end) cfg->fallbackImage = -1; |
907 | |
908 | } else if (line->type == LT_TITLE && line->numElements > 1) { |
909 | /* make the title a single argument (undoing our parsing) */ |
910 | len = 0; |
911 | for (i = 1; i < line->numElements; i++) { |
912 | len += strlen(line->elements[i].item); |
913 | len += strlen(line->elements[i].indent); |
914 | } |
915 | buf = malloc(len + 1); |
916 | *buf = '\0'; |
917 | |
918 | for (i = 1; i < line->numElements; i++) { |
919 | strcat(buf, line->elements[i].item); |
920 | free(line->elements[i].item); |
921 | |
922 | if ((i + 1) != line->numElements) { |
923 | strcat(buf, line->elements[i].indent); |
924 | free(line->elements[i].indent); |
925 | } |
926 | } |
927 | |
928 | line->elements[1].indent = |
929 | line->elements[line->numElements - 1].indent; |
930 | line->elements[1].item = buf; |
931 | line->numElements = 2; |
932 | |
933 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
934 | /* Strip off any " which may be present; they'll be put back |
935 | on write. This is one of the few (the only?) places that grubby |
936 | canonicalizes the output */ |
937 | |
938 | if (line->numElements >= 2) { |
939 | int last, len; |
940 | |
941 | if (*line->elements[1].item == '"') |
942 | memmove(line->elements[1].item, line->elements[1].item + 1, |
943 | strlen(line->elements[1].item + 1) + 1); |
944 | |
945 | last = line->numElements - 1; |
946 | len = strlen(line->elements[last].item) - 1; |
947 | if (line->elements[last].item[len] == '"') |
948 | line->elements[last].item[len] = '\0'; |
949 | } |
950 | } |
951 | |
952 | /* If we find a generic config option which should live at the |
953 | top of the file, move it there. Old versions of grubby were |
954 | probably responsible for putting new images in the wrong |
955 | place in front of it anyway. */ |
956 | if (sawEntry && line->type == LT_GENERIC) { |
957 | struct singleLine **l = &cfg->theLines; |
958 | struct singleLine **last_nonws = &cfg->theLines; |
959 | while (*l) { |
960 | if ((*l)->type != LT_WHITESPACE) |
961 | last_nonws = &((*l)->next); |
962 | l = &((*l)->next); |
963 | } |
964 | line->next = *last_nonws; |
965 | *last_nonws = line; |
966 | movedLine = 1; |
967 | continue; /* without setting 'last' */ |
968 | } |
969 | |
970 | /* If a second line of whitespace happens after a generic option |
971 | which was moved, drop it. */ |
972 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { |
973 | lineFree(line); |
974 | free(line); |
975 | movedLine = 0; |
976 | continue; |
977 | } |
978 | movedLine = 0; |
979 | |
980 | if (sawEntry) { |
981 | if (!entry->lines) |
982 | entry->lines = line; |
983 | else |
984 | last->next = line; |
985 | dbgPrintf("readConfig added %s to %p\n", getKeyByType(line->type, cfi), entry); |
986 | |
987 | /* we could have seen this outside of an entry... if so, we |
988 | * ignore it like any other line we don't grok */ |
989 | if (line->type == LT_ENTRY_END && sawEntry) |
990 | sawEntry = 0; |
991 | } else { |
992 | if (!cfg->theLines) |
993 | cfg->theLines = line; |
994 | else |
995 | last->next = line; |
996 | dbgPrintf("readConfig added %s to cfg\n", getKeyByType(line->type, cfi)); |
997 | } |
998 | |
999 | last = line; |
1000 | } |
1001 | |
1002 | free(incoming); |
1003 | |
1004 | dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset"); |
1005 | if (defaultLine) { |
1006 | if (cfi->defaultIsVariable) { |
1007 | char *value = defaultLine->elements[2].item; |
1008 | while (*value && (*value == '"' || *value == '\'' || |
1009 | *value == ' ' || *value == '\t')) |
1010 | value++; |
1011 | cfg->defaultImage = strtol(value, &end, 10); |
1012 | while (*end && (*end == '"' || *end == '\'' || |
1013 | *end == ' ' || *end == '\t')) |
1014 | end++; |
1015 | if (*end) cfg->defaultImage = -1; |
1016 | } else if (cfi->defaultSupportSaved && |
1017 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { |
1018 | cfg->defaultImage = DEFAULT_SAVED; |
1019 | } else if (cfi->defaultIsIndex) { |
1020 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); |
1021 | if (*end) cfg->defaultImage = -1; |
1022 | } else if (defaultLine->numElements >= 2) { |
1023 | i = 0; |
1024 | while ((entry = findEntryByIndex(cfg, i))) { |
1025 | for (line = entry->lines; line; line = line->next) |
1026 | if (line->type == LT_TITLE) break; |
1027 | |
1028 | if (!cfi->titleBracketed) { |
1029 | if (line && (line->numElements >= 2) && |
1030 | !strcmp(defaultLine->elements[1].item, |
1031 | line->elements[1].item)) break; |
1032 | } else if (line) { |
1033 | if (!strcmp(defaultLine->elements[1].item, |
1034 | extractTitle(line))) break; |
1035 | } |
1036 | i++; |
1037 | entry = NULL; |
1038 | } |
1039 | |
1040 | if (entry){ |
1041 | cfg->defaultImage = i; |
1042 | }else{ |
1043 | cfg->defaultImage = -1; |
1044 | } |
1045 | } |
1046 | } else { |
1047 | cfg->defaultImage = 0; |
1048 | } |
1049 | |
1050 | return cfg; |
1051 | } |
1052 | |
1053 | static void writeDefault(FILE * out, char * indent, |
1054 | char * separator, struct grubConfig * cfg) { |
1055 | struct singleEntry * entry; |
1056 | struct singleLine * line; |
1057 | int i; |
1058 | |
1059 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; |
1060 | |
1061 | if (cfg->defaultImage == DEFAULT_SAVED) |
1062 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
1063 | else if (cfg->defaultImage > -1) { |
1064 | if (cfg->cfi->defaultIsIndex) { |
1065 | if (cfg->cfi->defaultIsVariable) { |
1066 | fprintf(out, "%sset default=\"%d\"\n", indent, |
1067 | cfg->defaultImage); |
1068 | } else { |
1069 | fprintf(out, "%sdefault%s%d\n", indent, separator, |
1070 | cfg->defaultImage); |
1071 | } |
1072 | } else { |
1073 | int image = cfg->defaultImage; |
1074 | |
1075 | entry = cfg->entries; |
1076 | while (entry && entry->skip) entry = entry->next; |
1077 | |
1078 | i = 0; |
1079 | while (entry && i < image) { |
1080 | entry = entry->next; |
1081 | |
1082 | while (entry && entry->skip) entry = entry->next; |
1083 | i++; |
1084 | } |
1085 | |
1086 | if (!entry) return; |
1087 | |
1088 | line = getLineByType(LT_TITLE, entry->lines); |
1089 | |
1090 | if (line && line->numElements >= 2) |
1091 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1092 | line->elements[1].item); |
1093 | else if (line && (line->numElements == 1) && |
1094 | cfg->cfi->titleBracketed) { |
1095 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1096 | extractTitle(line)); |
1097 | } |
1098 | } |
1099 | } |
1100 | } |
1101 | |
1102 | static int writeConfig(struct grubConfig * cfg, char * outName, |
1103 | const char * prefix) { |
1104 | FILE * out; |
1105 | struct singleLine * line; |
1106 | struct singleEntry * entry; |
1107 | char * tmpOutName; |
1108 | int needs = MAIN_DEFAULT; |
1109 | struct stat sb; |
1110 | int i; |
1111 | |
1112 | if (!strcmp(outName, "-")) { |
1113 | out = stdout; |
1114 | tmpOutName = NULL; |
1115 | } else { |
1116 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
1117 | char * buf; |
1118 | int len = 256; |
1119 | int rc; |
1120 | |
1121 | /* most likely the symlink is relative, so change our |
1122 | directory to the dir of the symlink */ |
1123 | rc = chdir(dirname(strdupa(outName))); |
1124 | do { |
1125 | buf = alloca(len + 1); |
1126 | rc = readlink(basename(outName), buf, len); |
1127 | if (rc == len) len += 256; |
1128 | } while (rc == len); |
1129 | |
1130 | if (rc < 0) { |
1131 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), |
1132 | outName, strerror(errno)); |
1133 | return 1; |
1134 | } |
1135 | |
1136 | outName = buf; |
1137 | outName[rc] = '\0'; |
1138 | } |
1139 | |
1140 | tmpOutName = alloca(strlen(outName) + 2); |
1141 | sprintf(tmpOutName, "%s-", outName); |
1142 | out = fopen(tmpOutName, "w"); |
1143 | if (!out) { |
1144 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, |
1145 | strerror(errno)); |
1146 | return 1; |
1147 | } |
1148 | |
1149 | if (!stat(outName, &sb)) { |
1150 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
1151 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), |
1152 | tmpOutName, strerror(errno)); |
1153 | fclose(out); |
1154 | unlink(tmpOutName); |
1155 | return 1; |
1156 | } |
1157 | } |
1158 | } |
1159 | |
1160 | line = cfg->theLines; |
1161 | struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi); |
1162 | while (line) { |
1163 | if (line->type == LT_SET_VARIABLE && defaultKw && |
1164 | line->numElements == 3 && |
1165 | !strcmp(line->elements[1].item, defaultKw->key)) { |
1166 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1167 | needs &= ~MAIN_DEFAULT; |
1168 | } else if (line->type == LT_DEFAULT) { |
1169 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1170 | needs &= ~MAIN_DEFAULT; |
1171 | } else if (line->type == LT_FALLBACK) { |
1172 | if (cfg->fallbackImage > -1) |
1173 | fprintf(out, "%s%s%s%d\n", line->indent, |
1174 | line->elements[0].item, line->elements[0].indent, |
1175 | cfg->fallbackImage); |
1176 | } else { |
1177 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1178 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1179 | tmpOutName, strerror(errno)); |
1180 | fclose(out); |
1181 | unlink(tmpOutName); |
1182 | return 1; |
1183 | } |
1184 | } |
1185 | |
1186 | line = line->next; |
1187 | } |
1188 | |
1189 | if (needs & MAIN_DEFAULT) { |
1190 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
1191 | needs &= ~MAIN_DEFAULT; |
1192 | } |
1193 | |
1194 | i = 0; |
1195 | while ((entry = findEntryByIndex(cfg, i++))) { |
1196 | if (entry->skip) continue; |
1197 | |
1198 | line = entry->lines; |
1199 | while (line) { |
1200 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1201 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1202 | tmpOutName, strerror(errno)); |
1203 | fclose(out); |
1204 | unlink(tmpOutName); |
1205 | return 1; |
1206 | } |
1207 | line = line->next; |
1208 | } |
1209 | } |
1210 | |
1211 | if (tmpOutName) { |
1212 | if (rename(tmpOutName, outName)) { |
1213 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), |
1214 | tmpOutName, outName, strerror(errno)); |
1215 | unlink(outName); |
1216 | return 1; |
1217 | } |
1218 | } |
1219 | |
1220 | return 0; |
1221 | } |
1222 | |
1223 | static int numEntries(struct grubConfig *cfg) { |
1224 | int i = 0; |
1225 | struct singleEntry * entry; |
1226 | |
1227 | entry = cfg->entries; |
1228 | while (entry) { |
1229 | if (!entry->skip) |
1230 | i++; |
1231 | entry = entry->next; |
1232 | } |
1233 | return i; |
1234 | } |
1235 | |
1236 | static char *findDiskForRoot() |
1237 | { |
1238 | int fd; |
1239 | char buf[65536]; |
1240 | char *devname; |
1241 | char *chptr; |
1242 | int rc; |
1243 | |
1244 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { |
1245 | fprintf(stderr, "grubby: failed to open %s: %s\n", |
1246 | _PATH_MOUNTED, strerror(errno)); |
1247 | return NULL; |
1248 | } |
1249 | |
1250 | rc = read(fd, buf, sizeof(buf) - 1); |
1251 | if (rc <= 0) { |
1252 | fprintf(stderr, "grubby: failed to read %s: %s\n", |
1253 | _PATH_MOUNTED, strerror(errno)); |
1254 | close(fd); |
1255 | return NULL; |
1256 | } |
1257 | close(fd); |
1258 | buf[rc] = '\0'; |
1259 | chptr = buf; |
1260 | |
1261 | while (chptr && chptr != buf+rc) { |
1262 | devname = chptr; |
1263 | |
1264 | /* |
1265 | * The first column of a mtab entry is the device, but if the entry is a |
1266 | * special device it won't start with /, so move on to the next line. |
1267 | */ |
1268 | if (*devname != '/') { |
1269 | chptr = strchr(chptr, '\n'); |
1270 | if (chptr) |
1271 | chptr++; |
1272 | continue; |
1273 | } |
1274 | |
1275 | /* Seek to the next space */ |
1276 | chptr = strchr(chptr, ' '); |
1277 | if (!chptr) { |
1278 | fprintf(stderr, "grubby: error parsing %s: %s\n", |
1279 | _PATH_MOUNTED, strerror(errno)); |
1280 | return NULL; |
1281 | } |
1282 | |
1283 | /* |
1284 | * The second column of a mtab entry is the mount point, we are looking |
1285 | * for '/' obviously. |
1286 | */ |
1287 | if (*(++chptr) == '/' && *(++chptr) == ' ') { |
1288 | /* |
1289 | * Move back 2, which is the first space after the device name, set |
1290 | * it to \0 so strdup will just get the devicename. |
1291 | */ |
1292 | chptr -= 2; |
1293 | *chptr = '\0'; |
1294 | return strdup(devname); |
1295 | } |
1296 | |
1297 | /* Next line */ |
1298 | chptr = strchr(chptr, '\n'); |
1299 | if (chptr) |
1300 | chptr++; |
1301 | } |
1302 | |
1303 | return NULL; |
1304 | } |
1305 | |
1306 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, |
1307 | int skipRemoved, int flags) { |
1308 | struct singleLine * line; |
1309 | char * fullName; |
1310 | int i; |
1311 | char * dev; |
1312 | char * rootspec; |
1313 | char * rootdev; |
1314 | |
1315 | if (skipRemoved && entry->skip) return 0; |
1316 | |
1317 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1318 | if (!line || line->numElements < 2) return 0; |
1319 | |
1320 | if (flags & GRUBBY_BADIMAGE_OKAY) return 1; |
1321 | |
1322 | fullName = alloca(strlen(bootPrefix) + |
1323 | strlen(line->elements[1].item) + 1); |
1324 | rootspec = getRootSpecifier(line->elements[1].item); |
1325 | sprintf(fullName, "%s%s", bootPrefix, |
1326 | line->elements[1].item + (rootspec ? strlen(rootspec) : 0)); |
1327 | if (access(fullName, R_OK)) return 0; |
1328 | |
1329 | for (i = 2; i < line->numElements; i++) |
1330 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1331 | if (i < line->numElements) { |
1332 | dev = line->elements[i].item + 5; |
1333 | } else { |
1334 | /* look for a lilo style LT_ROOT line */ |
1335 | line = getLineByType(LT_ROOT, entry->lines); |
1336 | |
1337 | if (line && line->numElements >= 2) { |
1338 | dev = line->elements[1].item; |
1339 | } else { |
1340 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS. |
1341 | * grub+multiboot uses LT_MBMODULE for the args, so check that too. |
1342 | */ |
1343 | line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines); |
1344 | |
1345 | /* failed to find one */ |
1346 | if (!line) return 0; |
1347 | |
1348 | for (i = 1; i < line->numElements; i++) |
1349 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1350 | if (i < line->numElements) |
1351 | dev = line->elements[i].item + 5; |
1352 | else { |
1353 | /* it failed too... can't find root= */ |
1354 | return 0; |
1355 | } |
1356 | } |
1357 | } |
1358 | |
1359 | dev = getpathbyspec(dev); |
1360 | if (!dev) |
1361 | return 0; |
1362 | |
1363 | rootdev = findDiskForRoot(); |
1364 | if (!rootdev) |
1365 | return 0; |
1366 | |
1367 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
1368 | free(rootdev); |
1369 | return 0; |
1370 | } |
1371 | |
1372 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
1373 | free(rootdev); |
1374 | return 0; |
1375 | } |
1376 | |
1377 | free(rootdev); |
1378 | |
1379 | return 1; |
1380 | } |
1381 | |
1382 | /* returns the first match on or after the one pointed to by index (if index |
1383 | is not NULL) which is not marked as skip */ |
1384 | struct singleEntry * findEntryByPath(struct grubConfig * config, |
1385 | const char * kernel, const char * prefix, |
1386 | int * index) { |
1387 | struct singleEntry * entry = NULL; |
1388 | struct singleLine * line; |
1389 | int i; |
1390 | char * chptr; |
1391 | char * rootspec = NULL; |
1392 | enum lineType_e checkType = LT_KERNEL; |
1393 | |
1394 | if (isdigit(*kernel)) { |
1395 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
1396 | |
1397 | i = 0; |
1398 | indexVars[i] = strtol(kernel, &chptr, 10); |
1399 | while (*chptr == ',') { |
1400 | i++; |
1401 | kernel = chptr + 1; |
1402 | indexVars[i] = strtol(kernel, &chptr, 10); |
1403 | } |
1404 | |
1405 | if (*chptr) { |
1406 | /* can't parse it, bail */ |
1407 | return NULL; |
1408 | } |
1409 | |
1410 | indexVars[i + 1] = -1; |
1411 | |
1412 | i = 0; |
1413 | if (index) { |
1414 | while (i < *index) i++; |
1415 | if (indexVars[i] == -1) return NULL; |
1416 | } |
1417 | |
1418 | entry = findEntryByIndex(config, indexVars[i]); |
1419 | if (!entry) return NULL; |
1420 | |
1421 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1422 | if (!line) return NULL; |
1423 | |
1424 | if (index) *index = indexVars[i]; |
1425 | return entry; |
1426 | } |
1427 | |
1428 | if (!strcmp(kernel, "DEFAULT")) { |
1429 | if (index && *index > config->defaultImage) { |
1430 | entry = NULL; |
1431 | } else { |
1432 | entry = findEntryByIndex(config, config->defaultImage); |
1433 | if (entry && entry->skip) |
1434 | entry = NULL; |
1435 | else if (index) |
1436 | *index = config->defaultImage; |
1437 | } |
1438 | } else if (!strcmp(kernel, "ALL")) { |
1439 | if (index) |
1440 | i = *index; |
1441 | else |
1442 | i = 0; |
1443 | |
1444 | while ((entry = findEntryByIndex(config, i))) { |
1445 | if (!entry->skip) break; |
1446 | i++; |
1447 | } |
1448 | |
1449 | if (entry && index) |
1450 | *index = i; |
1451 | } else { |
1452 | if (index) |
1453 | i = *index; |
1454 | else |
1455 | i = 0; |
1456 | |
1457 | if (!strncmp(kernel, "TITLE=", 6)) { |
1458 | prefix = ""; |
1459 | checkType = LT_TITLE; |
1460 | kernel += 6; |
1461 | } |
1462 | |
1463 | for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) { |
1464 | if (entry->skip) continue; |
1465 | |
1466 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry); |
1467 | |
1468 | /* check all the lines matching checkType */ |
1469 | for (line = entry->lines; line; line = line->next) { |
1470 | line = getLineByType(entry->multiboot && checkType == LT_KERNEL ? |
1471 | LT_KERNEL|LT_MBMODULE|LT_HYPER : |
1472 | checkType, line); |
1473 | if (!line) break; /* not found in this entry */ |
1474 | |
1475 | if (line && line->numElements >= 2) { |
1476 | rootspec = getRootSpecifier(line->elements[1].item); |
1477 | if (!strcmp(line->elements[1].item + |
1478 | ((rootspec != NULL) ? strlen(rootspec) : 0), |
1479 | kernel + strlen(prefix))) |
1480 | break; |
1481 | } |
1482 | } |
1483 | |
1484 | /* make sure this entry has a kernel identifier; this skips |
1485 | * non-Linux boot entries (could find netbsd etc, though, which is |
1486 | * unfortunate) |
1487 | */ |
1488 | if (line && getLineByType(LT_KERNEL|LT_HYPER, entry->lines)) |
1489 | break; /* found 'im! */ |
1490 | } |
1491 | |
1492 | if (index) *index = i; |
1493 | } |
1494 | |
1495 | return entry; |
1496 | } |
1497 | |
1498 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { |
1499 | struct singleEntry * entry; |
1500 | |
1501 | entry = cfg->entries; |
1502 | while (index && entry) { |
1503 | entry = entry->next; |
1504 | index--; |
1505 | } |
1506 | |
1507 | return entry; |
1508 | } |
1509 | |
1510 | /* Find a good template to use for the new kernel. An entry is |
1511 | * good if the kernel and mkinitrd exist (even if the entry |
1512 | * is going to be removed). Try and use the default entry, but |
1513 | * if that doesn't work just take the first. If we can't find one, |
1514 | * bail. */ |
1515 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, |
1516 | int * indexPtr, int skipRemoved, int flags) { |
1517 | struct singleEntry * entry, * entry2; |
1518 | int index; |
1519 | |
1520 | if (cfg->defaultImage > -1) { |
1521 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
1522 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
1523 | if (indexPtr) *indexPtr = cfg->defaultImage; |
1524 | return entry; |
1525 | } |
1526 | } |
1527 | |
1528 | index = 0; |
1529 | while ((entry = findEntryByIndex(cfg, index))) { |
1530 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
1531 | int j; |
1532 | for (j = 0; j < index; j++) { |
1533 | entry2 = findEntryByIndex(cfg, j); |
1534 | if (entry2->skip) index--; |
1535 | } |
1536 | if (indexPtr) *indexPtr = index; |
1537 | |
1538 | return entry; |
1539 | } |
1540 | |
1541 | index++; |
1542 | } |
1543 | |
1544 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); |
1545 | |
1546 | return NULL; |
1547 | } |
1548 | |
1549 | char * findBootPrefix(void) { |
1550 | struct stat sb, sb2; |
1551 | |
1552 | stat("/", &sb); |
1553 | #ifdef __ia64__ |
1554 | stat("/boot/efi/EFI/redhat/", &sb2); |
1555 | #else |
1556 | stat("/boot", &sb2); |
1557 | #endif |
1558 | |
1559 | if (sb.st_dev == sb2.st_dev) |
1560 | return strdup(""); |
1561 | |
1562 | #ifdef __ia64__ |
1563 | return strdup("/boot/efi/EFI/redhat/"); |
1564 | #else |
1565 | return strdup("/boot"); |
1566 | #endif |
1567 | } |
1568 | |
1569 | void markRemovedImage(struct grubConfig * cfg, const char * image, |
1570 | const char * prefix) { |
1571 | struct singleEntry * entry; |
1572 | |
1573 | if (!image) return; |
1574 | |
1575 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
1576 | entry->skip = 1; |
1577 | } |
1578 | |
1579 | void setDefaultImage(struct grubConfig * config, int hasNew, |
1580 | const char * defaultKernelPath, int newIsDefault, |
1581 | const char * prefix, int flags) { |
1582 | struct singleEntry * entry, * entry2, * newDefault; |
1583 | int i, j; |
1584 | |
1585 | if (newIsDefault) { |
1586 | config->defaultImage = 0; |
1587 | return; |
1588 | } else if (defaultKernelPath) { |
1589 | i = 0; |
1590 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { |
1591 | config->defaultImage = i; |
1592 | } else { |
1593 | config->defaultImage = -1; |
1594 | return; |
1595 | } |
1596 | } |
1597 | |
1598 | /* defaultImage now points to what we'd like to use, but before any order |
1599 | changes */ |
1600 | if (config->defaultImage == DEFAULT_SAVED) |
1601 | /* default is set to saved, we don't want to change it */ |
1602 | return; |
1603 | |
1604 | if (config->defaultImage > -1) |
1605 | entry = findEntryByIndex(config, config->defaultImage); |
1606 | else |
1607 | entry = NULL; |
1608 | |
1609 | if (entry && !entry->skip) { |
1610 | /* we can preserve the default */ |
1611 | if (hasNew) |
1612 | config->defaultImage++; |
1613 | |
1614 | /* count the number of entries erased before this one */ |
1615 | for (j = 0; j < config->defaultImage; j++) { |
1616 | entry2 = findEntryByIndex(config, j); |
1617 | if (entry2->skip) config->defaultImage--; |
1618 | } |
1619 | } else if (hasNew) { |
1620 | config->defaultImage = 0; |
1621 | } else { |
1622 | /* Either we just erased the default (or the default line was bad |
1623 | * to begin with) and didn't put a new one in. We'll use the first |
1624 | * valid image. */ |
1625 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, |
1626 | flags); |
1627 | if (!newDefault) |
1628 | config->defaultImage = -1; |
1629 | } |
1630 | } |
1631 | |
1632 | void setFallbackImage(struct grubConfig * config, int hasNew) { |
1633 | struct singleEntry * entry, * entry2; |
1634 | int j; |
1635 | |
1636 | if (config->fallbackImage == -1) return; |
1637 | |
1638 | entry = findEntryByIndex(config, config->fallbackImage); |
1639 | if (!entry || entry->skip) { |
1640 | config->fallbackImage = -1; |
1641 | return; |
1642 | } |
1643 | |
1644 | if (hasNew) |
1645 | config->fallbackImage++; |
1646 | |
1647 | /* count the number of entries erased before this one */ |
1648 | for (j = 0; j < config->fallbackImage; j++) { |
1649 | entry2 = findEntryByIndex(config, j); |
1650 | if (entry2->skip) config->fallbackImage--; |
1651 | } |
1652 | } |
1653 | |
1654 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { |
1655 | struct singleLine * line; |
1656 | char * root = NULL; |
1657 | int i; |
1658 | |
1659 | printf("index=%d\n", index); |
1660 | |
1661 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1662 | if (!line) { |
1663 | printf("non linux entry\n"); |
1664 | return; |
1665 | } |
1666 | |
1667 | printf("kernel=%s\n", line->elements[1].item); |
1668 | |
1669 | if (line->numElements >= 3) { |
1670 | printf("args=\""); |
1671 | i = 2; |
1672 | while (i < line->numElements) { |
1673 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
1674 | root = line->elements[i].item + 5; |
1675 | } else { |
1676 | printf("%s%s", line->elements[i].item, |
1677 | line->elements[i].indent); |
1678 | } |
1679 | |
1680 | i++; |
1681 | } |
1682 | printf("\"\n"); |
1683 | } else { |
1684 | line = getLineByType(LT_KERNELARGS, entry->lines); |
1685 | if (line) { |
1686 | char * s; |
1687 | |
1688 | printf("args=\""); |
1689 | i = 1; |
1690 | while (i < line->numElements) { |
1691 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
1692 | root = line->elements[i].item + 5; |
1693 | } else { |
1694 | s = line->elements[i].item; |
1695 | |
1696 | printf("%s%s", s, line->elements[i].indent); |
1697 | } |
1698 | |
1699 | i++; |
1700 | } |
1701 | |
1702 | s = line->elements[i - 1].indent; |
1703 | printf("\"\n"); |
1704 | } |
1705 | } |
1706 | |
1707 | if (!root) { |
1708 | line = getLineByType(LT_ROOT, entry->lines); |
1709 | if (line && line->numElements >= 2) |
1710 | root=line->elements[1].item; |
1711 | } |
1712 | |
1713 | if (root) { |
1714 | char * s = alloca(strlen(root) + 1); |
1715 | |
1716 | strcpy(s, root); |
1717 | if (s[strlen(s) - 1] == '"') |
1718 | s[strlen(s) - 1] = '\0'; |
1719 | /* make sure the root doesn't have a trailing " */ |
1720 | printf("root=%s\n", s); |
1721 | } |
1722 | |
1723 | line = getLineByType(LT_INITRD, entry->lines); |
1724 | |
1725 | if (line && line->numElements >= 2) { |
1726 | printf("initrd=%s", prefix); |
1727 | for (i = 1; i < line->numElements; i++) |
1728 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
1729 | printf("\n"); |
1730 | } |
1731 | } |
1732 | |
1733 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { |
1734 | FILE * in; |
1735 | char buf[1024]; |
1736 | char * chptr; |
1737 | char * start; |
1738 | char * param; |
1739 | |
1740 | in = fopen("/etc/conf.d/grub", "r"); |
1741 | if (!in) return 1; |
1742 | |
1743 | if (lbaPtr) *lbaPtr = 0; |
1744 | if (bootPtr) *bootPtr = NULL; |
1745 | |
1746 | while (fgets(buf, sizeof(buf), in)) { |
1747 | start = buf; |
1748 | while (isspace(*start)) start++; |
1749 | if (*start == '#') continue; |
1750 | |
1751 | chptr = strchr(start, '='); |
1752 | if (!chptr) continue; |
1753 | chptr--; |
1754 | while (*chptr && isspace(*chptr)) chptr--; |
1755 | chptr++; |
1756 | *chptr = '\0'; |
1757 | |
1758 | param = chptr + 1; |
1759 | while (*param && isspace(*param)) param++; |
1760 | if (*param == '=') { |
1761 | param++; |
1762 | while (*param && isspace(*param)) param++; |
1763 | } |
1764 | |
1765 | chptr = param; |
1766 | while (*chptr && !isspace(*chptr)) chptr++; |
1767 | *chptr = '\0'; |
1768 | |
1769 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
1770 | *lbaPtr = 1; |
1771 | else if (!strcmp(start, "boot") && bootPtr) |
1772 | *bootPtr = strdup(param); |
1773 | } |
1774 | |
1775 | fclose(in); |
1776 | |
1777 | return 0; |
1778 | } |
1779 | |
1780 | void dumpSysconfigGrub(void) { |
1781 | char * boot; |
1782 | int lba; |
1783 | |
1784 | if (!parseSysconfigGrub(&lba, &boot)) { |
1785 | if (lba) printf("lba\n"); |
1786 | if (boot) printf("boot=%s\n", boot); |
1787 | } |
1788 | } |
1789 | |
1790 | int displayInfo(struct grubConfig * config, char * kernel, |
1791 | const char * prefix) { |
1792 | int i = 0; |
1793 | struct singleEntry * entry; |
1794 | struct singleLine * line; |
1795 | |
1796 | entry = findEntryByPath(config, kernel, prefix, &i); |
1797 | if (!entry) { |
1798 | fprintf(stderr, _("grubby: kernel not found\n")); |
1799 | return 1; |
1800 | } |
1801 | |
1802 | /* this is a horrible hack to support /etc/conf.d/grub; there must |
1803 | be a better way */ |
1804 | if (config->cfi == &grubConfigType) { |
1805 | dumpSysconfigGrub(); |
1806 | } else { |
1807 | line = getLineByType(LT_BOOT, config->theLines); |
1808 | if (line && line->numElements >= 1) { |
1809 | printf("boot=%s\n", line->elements[1].item); |
1810 | } |
1811 | |
1812 | line = getLineByType(LT_LBA, config->theLines); |
1813 | if (line) printf("lba\n"); |
1814 | } |
1815 | |
1816 | displayEntry(entry, prefix, i); |
1817 | |
1818 | i++; |
1819 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
1820 | displayEntry(entry, prefix, i); |
1821 | i++; |
1822 | } |
1823 | |
1824 | return 0; |
1825 | } |
1826 | |
1827 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
1828 | struct singleLine * tmplLine, |
1829 | struct singleLine * prevLine, |
1830 | const char * val, |
1831 | struct configFileInfo * cfi) |
1832 | { |
1833 | struct singleLine * newLine = lineDup(tmplLine); |
1834 | |
1835 | if (val) { |
1836 | /* override the inherited value with our own. |
1837 | * This is a little weak because it only applies to elements[1] |
1838 | */ |
1839 | if (newLine->numElements > 1) |
1840 | removeElement(newLine, 1); |
1841 | insertElement(newLine, val, 1, cfi); |
1842 | |
1843 | /* but try to keep the rootspec from the template... sigh */ |
1844 | if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD)) { |
1845 | char * rootspec = getRootSpecifier(tmplLine->elements[1].item); |
1846 | if (rootspec != NULL) { |
1847 | free(newLine->elements[1].item); |
1848 | newLine->elements[1].item = |
1849 | sdupprintf("%s%s", rootspec, val); |
1850 | } |
1851 | } |
1852 | } |
1853 | |
1854 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? |
1855 | newLine->elements[0].item : ""); |
1856 | |
1857 | if (!entry->lines) { |
1858 | /* first one on the list */ |
1859 | entry->lines = newLine; |
1860 | } else if (prevLine) { |
1861 | /* add after prevLine */ |
1862 | newLine->next = prevLine->next; |
1863 | prevLine->next = newLine; |
1864 | } |
1865 | |
1866 | return newLine; |
1867 | } |
1868 | |
1869 | /* val may be NULL */ |
1870 | struct singleLine * addLine(struct singleEntry * entry, |
1871 | struct configFileInfo * cfi, |
1872 | enum lineType_e type, char * defaultIndent, |
1873 | const char * val) { |
1874 | struct singleLine * line, * prev; |
1875 | struct keywordTypes * kw; |
1876 | struct singleLine tmpl; |
1877 | |
1878 | /* NB: This function shouldn't allocate items on the heap, rather on the |
1879 | * stack since it calls addLineTmpl which will make copies. |
1880 | */ |
1881 | |
1882 | if (type == LT_TITLE && cfi->titleBracketed) { |
1883 | /* we're doing a bracketed title (zipl) */ |
1884 | tmpl.type = type; |
1885 | tmpl.numElements = 1; |
1886 | tmpl.elements = alloca(sizeof(*tmpl.elements)); |
1887 | tmpl.elements[0].item = alloca(strlen(val)+3); |
1888 | sprintf(tmpl.elements[0].item, "[%s]", val); |
1889 | tmpl.elements[0].indent = ""; |
1890 | val = NULL; |
1891 | } else if (type == LT_MENUENTRY) { |
1892 | char *lineend = "--class gnu-linux --class gnu --class os {"; |
1893 | if (!val) { |
1894 | fprintf(stderr, "Line type LT_MENUENTRY requires a value\n"); |
1895 | abort(); |
1896 | } |
1897 | kw = getKeywordByType(type, cfi); |
1898 | if (!kw) { |
1899 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
1900 | abort(); |
1901 | } |
1902 | tmpl.indent = ""; |
1903 | tmpl.type = type; |
1904 | tmpl.numElements = 3; |
1905 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
1906 | tmpl.elements[0].item = kw->key; |
1907 | tmpl.elements[0].indent = alloca(2); |
1908 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
1909 | tmpl.elements[1].item = (char *)val; |
1910 | tmpl.elements[1].indent = alloca(2); |
1911 | sprintf(tmpl.elements[1].indent, "%c", kw->nextChar); |
1912 | tmpl.elements[2].item = alloca(strlen(lineend)+1); |
1913 | strcpy(tmpl.elements[2].item, lineend); |
1914 | tmpl.elements[2].indent = ""; |
1915 | } else { |
1916 | kw = getKeywordByType(type, cfi); |
1917 | if (!kw) { |
1918 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
1919 | abort(); |
1920 | } |
1921 | tmpl.type = type; |
1922 | tmpl.numElements = val ? 2 : 1; |
1923 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
1924 | tmpl.elements[0].item = kw->key; |
1925 | tmpl.elements[0].indent = alloca(2); |
1926 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
1927 | if (val) { |
1928 | tmpl.elements[1].item = (char *)val; |
1929 | tmpl.elements[1].indent = ""; |
1930 | } |
1931 | } |
1932 | |
1933 | /* The last non-empty line gives us the indention to us and the line |
1934 | to insert after. Note that comments are considered empty lines, which |
1935 | may not be ideal? If there are no lines or we are looking at the |
1936 | first line, we use defaultIndent (the first line is normally indented |
1937 | differently from the rest) */ |
1938 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
1939 | if (line->numElements) prev = line; |
1940 | /* fall back on the last line if prev isn't otherwise set */ |
1941 | if (!line->next && !prev) prev = line; |
1942 | } |
1943 | |
1944 | struct singleLine *menuEntry; |
1945 | menuEntry = getLineByType(LT_MENUENTRY, entry->lines); |
1946 | if (tmpl.type == LT_ENTRY_END) { |
1947 | if (menuEntry) |
1948 | tmpl.indent = menuEntry->indent; |
1949 | else |
1950 | tmpl.indent = defaultIndent ?: ""; |
1951 | } else if (tmpl.type != LT_MENUENTRY) { |
1952 | if (menuEntry) |
1953 | tmpl.indent = "\t"; |
1954 | else if (prev == entry->lines) |
1955 | tmpl.indent = defaultIndent ?: ""; |
1956 | else |
1957 | tmpl.indent = prev->indent; |
1958 | } |
1959 | |
1960 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
1961 | } |
1962 | |
1963 | void removeLine(struct singleEntry * entry, struct singleLine * line) { |
1964 | struct singleLine * prev; |
1965 | int i; |
1966 | |
1967 | for (i = 0; i < line->numElements; i++) { |
1968 | free(line->elements[i].item); |
1969 | free(line->elements[i].indent); |
1970 | } |
1971 | free(line->elements); |
1972 | free(line->indent); |
1973 | |
1974 | if (line == entry->lines) { |
1975 | entry->lines = line->next; |
1976 | } else { |
1977 | prev = entry->lines; |
1978 | while (prev->next != line) prev = prev->next; |
1979 | prev->next = line->next; |
1980 | } |
1981 | |
1982 | free(line); |
1983 | } |
1984 | |
1985 | static int isquote(char q) |
1986 | { |
1987 | if (q == '\'' || q == '\"') |
1988 | return 1; |
1989 | return 0; |
1990 | } |
1991 | |
1992 | static void requote(struct singleLine *tmplLine, struct configFileInfo * cfi) |
1993 | { |
1994 | struct singleLine newLine = { |
1995 | .indent = tmplLine->indent, |
1996 | .type = tmplLine->type, |
1997 | .next = tmplLine->next, |
1998 | }; |
1999 | int firstQuotedItem = -1; |
2000 | int quoteLen = 0; |
2001 | int j; |
2002 | int element = 0; |
2003 | char *c; |
2004 | |
2005 | c = malloc(strlen(tmplLine->elements[0].item) + 1); |
2006 | strcpy(c, tmplLine->elements[0].item); |
2007 | insertElement(&newLine, c, element++, cfi); |
2008 | free(c); |
2009 | c = NULL; |
2010 | |
2011 | for (j = 1; j < tmplLine->numElements; j++) { |
2012 | if (firstQuotedItem == -1) { |
2013 | quoteLen += strlen(tmplLine->elements[j].item); |
2014 | |
2015 | if (isquote(tmplLine->elements[j].item[0])) { |
2016 | firstQuotedItem = j; |
2017 | quoteLen += strlen(tmplLine->elements[j].indent); |
2018 | } else { |
2019 | c = malloc(quoteLen + 1); |
2020 | strcpy(c, tmplLine->elements[j].item); |
2021 | insertElement(&newLine, c, element++, cfi); |
2022 | free(c); |
2023 | quoteLen = 0; |
2024 | } |
2025 | } else { |
2026 | int itemlen = strlen(tmplLine->elements[j].item); |
2027 | quoteLen += itemlen; |
2028 | quoteLen += strlen(tmplLine->elements[j].indent); |
2029 | |
2030 | if (isquote(tmplLine->elements[j].item[itemlen - 1])) { |
2031 | c = malloc(quoteLen + 1); |
2032 | c[0] = '\0'; |
2033 | for (int i = firstQuotedItem; i < j+1; i++) { |
2034 | strcat(c, tmplLine->elements[i].item); |
2035 | strcat(c, tmplLine->elements[i].indent); |
2036 | } |
2037 | insertElement(&newLine, c, element++, cfi); |
2038 | free(c); |
2039 | |
2040 | firstQuotedItem = -1; |
2041 | quoteLen = 0; |
2042 | } |
2043 | } |
2044 | } |
2045 | while (tmplLine->numElements) |
2046 | removeElement(tmplLine, 0); |
2047 | if (tmplLine->elements) |
2048 | free(tmplLine->elements); |
2049 | |
2050 | tmplLine->numElements = newLine.numElements; |
2051 | tmplLine->elements = newLine.elements; |
2052 | } |
2053 | |
2054 | static void insertElement(struct singleLine * line, |
2055 | const char * item, int insertHere, |
2056 | struct configFileInfo * cfi) |
2057 | { |
2058 | struct keywordTypes * kw; |
2059 | char indent[2] = ""; |
2060 | |
2061 | /* sanity check */ |
2062 | if (insertHere > line->numElements) { |
2063 | dbgPrintf("insertElement() adjusting insertHere from %d to %d\n", |
2064 | insertHere, line->numElements); |
2065 | insertHere = line->numElements; |
2066 | } |
2067 | |
2068 | line->elements = realloc(line->elements, (line->numElements + 1) * |
2069 | sizeof(*line->elements)); |
2070 | memmove(&line->elements[insertHere+1], |
2071 | &line->elements[insertHere], |
2072 | (line->numElements - insertHere) * |
2073 | sizeof(*line->elements)); |
2074 | line->elements[insertHere].item = strdup(item); |
2075 | |
2076 | kw = getKeywordByType(line->type, cfi); |
2077 | |
2078 | if (line->numElements == 0) { |
2079 | indent[0] = '\0'; |
2080 | } else if (insertHere == 0) { |
2081 | indent[0] = kw->nextChar; |
2082 | } else if (kw->separatorChar != '\0') { |
2083 | indent[0] = kw->separatorChar; |
2084 | } else { |
2085 | indent[0] = ' '; |
2086 | } |
2087 | |
2088 | if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') { |
2089 | /* move the end-of-line forward */ |
2090 | line->elements[insertHere].indent = |
2091 | line->elements[insertHere-1].indent; |
2092 | line->elements[insertHere-1].indent = strdup(indent); |
2093 | } else { |
2094 | line->elements[insertHere].indent = strdup(indent); |
2095 | } |
2096 | |
2097 | line->numElements++; |
2098 | |
2099 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", |
2100 | line->elements[0].item, |
2101 | line->elements[insertHere].item, |
2102 | line->elements[insertHere].indent, |
2103 | insertHere); |
2104 | } |
2105 | |
2106 | static void removeElement(struct singleLine * line, int removeHere) { |
2107 | int i; |
2108 | |
2109 | /* sanity check */ |
2110 | if (removeHere >= line->numElements) return; |
2111 | |
2112 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, |
2113 | removeHere, line->elements[removeHere].item); |
2114 | |
2115 | free(line->elements[removeHere].item); |
2116 | |
2117 | if (removeHere > 1) { |
2118 | /* previous argument gets this argument's post-indentation */ |
2119 | free(line->elements[removeHere-1].indent); |
2120 | line->elements[removeHere-1].indent = |
2121 | line->elements[removeHere].indent; |
2122 | } else { |
2123 | free(line->elements[removeHere].indent); |
2124 | } |
2125 | |
2126 | /* now collapse the array, but don't bother to realloc smaller */ |
2127 | for (i = removeHere; i < line->numElements - 1; i++) |
2128 | line->elements[i] = line->elements[i + 1]; |
2129 | |
2130 | line->numElements--; |
2131 | } |
2132 | |
2133 | int argMatch(const char * one, const char * two) { |
2134 | char * first, * second; |
2135 | char * chptr; |
2136 | |
2137 | first = strcpy(alloca(strlen(one) + 1), one); |
2138 | second = strcpy(alloca(strlen(two) + 1), two); |
2139 | |
2140 | chptr = strchr(first, '='); |
2141 | if (chptr) *chptr = '\0'; |
2142 | |
2143 | chptr = strchr(second, '='); |
2144 | if (chptr) *chptr = '\0'; |
2145 | |
2146 | return strcmp(first, second); |
2147 | } |
2148 | |
2149 | int updateActualImage(struct grubConfig * cfg, const char * image, |
2150 | const char * prefix, const char * addArgs, |
2151 | const char * removeArgs, int multibootArgs) { |
2152 | struct singleEntry * entry; |
2153 | struct singleLine * line, * rootLine; |
2154 | int index = 0; |
2155 | int i, k; |
2156 | const char ** newArgs, ** oldArgs; |
2157 | const char ** arg; |
2158 | int useKernelArgs, useRoot; |
2159 | int firstElement; |
2160 | int *usedElements; |
2161 | int doreplace; |
2162 | |
2163 | if (!image) return 0; |
2164 | |
2165 | if (!addArgs) { |
2166 | newArgs = malloc(sizeof(*newArgs)); |
2167 | *newArgs = NULL; |
2168 | } else { |
2169 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
2170 | fprintf(stderr, |
2171 | _("grubby: error separating arguments '%s'\n"), addArgs); |
2172 | return 1; |
2173 | } |
2174 | } |
2175 | |
2176 | if (!removeArgs) { |
2177 | oldArgs = malloc(sizeof(*oldArgs)); |
2178 | *oldArgs = NULL; |
2179 | } else { |
2180 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
2181 | fprintf(stderr, |
2182 | _("grubby: error separating arguments '%s'\n"), removeArgs); |
2183 | free(newArgs); |
2184 | return 1; |
2185 | } |
2186 | } |
2187 | |
2188 | |
2189 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
2190 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); |
2191 | |
2192 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
2193 | && !multibootArgs); |
2194 | |
2195 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
2196 | |
2197 | if (multibootArgs && !entry->multiboot) |
2198 | continue; |
2199 | |
2200 | /* Determine where to put the args. If this config supports |
2201 | * LT_KERNELARGS, use that. Otherwise use |
2202 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. |
2203 | */ |
2204 | if (useKernelArgs) { |
2205 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2206 | if (!line) { |
2207 | /* no LT_KERNELARGS, need to add it */ |
2208 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, |
2209 | cfg->secondaryIndent, NULL); |
2210 | } |
2211 | firstElement = 1; |
2212 | |
2213 | } else if (multibootArgs) { |
2214 | line = getLineByType(LT_HYPER, entry->lines); |
2215 | if (!line) { |
2216 | /* a multiboot entry without LT_HYPER? */ |
2217 | continue; |
2218 | } |
2219 | firstElement = 2; |
2220 | |
2221 | } else { |
2222 | line = getLineByType(LT_KERNEL|LT_MBMODULE, entry->lines); |
2223 | if (!line) { |
2224 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ |
2225 | continue; |
2226 | } |
2227 | firstElement = 2; |
2228 | } |
2229 | |
2230 | /* handle the elilo case which does: |
2231 | * append="hypervisor args -- kernel args" |
2232 | */ |
2233 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { |
2234 | /* this is a multiboot entry, make sure there's |
2235 | * -- on the args line |
2236 | */ |
2237 | for (i = firstElement; i < line->numElements; i++) { |
2238 | if (!strcmp(line->elements[i].item, "--")) |
2239 | break; |
2240 | } |
2241 | if (i == line->numElements) { |
2242 | /* assume all existing args are kernel args, |
2243 | * prepend -- to make it official |
2244 | */ |
2245 | insertElement(line, "--", firstElement, cfg->cfi); |
2246 | i = firstElement; |
2247 | } |
2248 | if (!multibootArgs) { |
2249 | /* kernel args start after the -- */ |
2250 | firstElement = i + 1; |
2251 | } |
2252 | } else if (cfg->cfi->mbConcatArgs) { |
2253 | /* this is a non-multiboot entry, remove hyper args */ |
2254 | for (i = firstElement; i < line->numElements; i++) { |
2255 | if (!strcmp(line->elements[i].item, "--")) |
2256 | break; |
2257 | } |
2258 | if (i < line->numElements) { |
2259 | /* remove args up to -- */ |
2260 | while (strcmp(line->elements[firstElement].item, "--")) |
2261 | removeElement(line, firstElement); |
2262 | /* remove -- */ |
2263 | removeElement(line, firstElement); |
2264 | } |
2265 | } |
2266 | |
2267 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
2268 | |
2269 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
2270 | |
2271 | doreplace = 1; |
2272 | for (i = firstElement; i < line->numElements; i++) { |
2273 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2274 | !strcmp(line->elements[i].item, "--")) |
2275 | { |
2276 | /* reached the end of hyper args, insert here */ |
2277 | doreplace = 0; |
2278 | break; |
2279 | } |
2280 | if (usedElements[i]) |
2281 | continue; |
2282 | if (!argMatch(line->elements[i].item, *arg)) { |
2283 | usedElements[i]=1; |
2284 | break; |
2285 | } |
2286 | } |
2287 | |
2288 | if (i < line->numElements && doreplace) { |
2289 | /* direct replacement */ |
2290 | free(line->elements[i].item); |
2291 | line->elements[i].item = strdup(*arg); |
2292 | |
2293 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
2294 | /* root= replacement */ |
2295 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2296 | if (rootLine) { |
2297 | free(rootLine->elements[1].item); |
2298 | rootLine->elements[1].item = strdup(*arg + 5); |
2299 | } else { |
2300 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, |
2301 | cfg->secondaryIndent, *arg + 5); |
2302 | } |
2303 | } |
2304 | |
2305 | else { |
2306 | /* insert/append */ |
2307 | insertElement(line, *arg, i, cfg->cfi); |
2308 | usedElements = realloc(usedElements, line->numElements * |
2309 | sizeof(*usedElements)); |
2310 | memmove(&usedElements[i + 1], &usedElements[i], |
2311 | line->numElements - i - 1); |
2312 | usedElements[i] = 1; |
2313 | |
2314 | /* if we updated a root= here even though there is a |
2315 | LT_ROOT available we need to remove the LT_ROOT entry |
2316 | (this will happen if we switch from a device to a label) */ |
2317 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
2318 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2319 | if (rootLine) |
2320 | removeLine(entry, rootLine); |
2321 | } |
2322 | } |
2323 | } |
2324 | |
2325 | free(usedElements); |
2326 | |
2327 | for (arg = oldArgs; *arg; arg++) { |
2328 | for (i = firstElement; i < line->numElements; i++) { |
2329 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2330 | !strcmp(line->elements[i].item, "--")) |
2331 | /* reached the end of hyper args, stop here */ |
2332 | break; |
2333 | if (!argMatch(line->elements[i].item, *arg)) { |
2334 | removeElement(line, i); |
2335 | break; |
2336 | } |
2337 | } |
2338 | /* handle removing LT_ROOT line too */ |
2339 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
2340 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2341 | if (rootLine) |
2342 | removeLine(entry, rootLine); |
2343 | } |
2344 | } |
2345 | |
2346 | if (line->numElements == 1) { |
2347 | /* don't need the line at all (note it has to be a |
2348 | LT_KERNELARGS for this to happen */ |
2349 | removeLine(entry, line); |
2350 | } |
2351 | } |
2352 | |
2353 | free(newArgs); |
2354 | free(oldArgs); |
2355 | |
2356 | return 0; |
2357 | } |
2358 | |
2359 | int updateImage(struct grubConfig * cfg, const char * image, |
2360 | const char * prefix, const char * addArgs, |
2361 | const char * removeArgs, |
2362 | const char * addMBArgs, const char * removeMBArgs) { |
2363 | int rc = 0; |
2364 | |
2365 | if (!image) return rc; |
2366 | |
2367 | /* update the main args first... */ |
2368 | if (addArgs || removeArgs) |
2369 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); |
2370 | if (rc) return rc; |
2371 | |
2372 | /* and now any multiboot args */ |
2373 | if (addMBArgs || removeMBArgs) |
2374 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); |
2375 | return rc; |
2376 | } |
2377 | |
2378 | int updateInitrd(struct grubConfig * cfg, const char * image, |
2379 | const char * prefix, const char * initrd) { |
2380 | struct singleEntry * entry; |
2381 | struct singleLine * line, * kernelLine, *endLine = NULL; |
2382 | int index = 0; |
2383 | |
2384 | if (!image) return 0; |
2385 | |
2386 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
2387 | kernelLine = getLineByType(LT_KERNEL, entry->lines); |
2388 | if (!kernelLine) continue; |
2389 | |
2390 | line = getLineByType(LT_INITRD, entry->lines); |
2391 | if (line) |
2392 | removeLine(entry, line); |
2393 | if (prefix) { |
2394 | int prefixLen = strlen(prefix); |
2395 | if (!strncmp(initrd, prefix, prefixLen)) |
2396 | initrd += prefixLen; |
2397 | } |
2398 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
2399 | if (endLine) |
2400 | removeLine(entry, endLine); |
2401 | line = addLine(entry, cfg->cfi, LT_INITRD, kernelLine->indent, initrd); |
2402 | if (!line) |
2403 | return 1; |
2404 | if (endLine) { |
2405 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
2406 | if (!line) |
2407 | return 1; |
2408 | } |
2409 | |
2410 | break; |
2411 | } |
2412 | |
2413 | return 0; |
2414 | } |
2415 | |
2416 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { |
2417 | int fd; |
2418 | unsigned char bootSect[512]; |
2419 | int offset; |
2420 | |
2421 | fd = open(device, O_RDONLY); |
2422 | if (fd < 0) { |
2423 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
2424 | device, strerror(errno)); |
2425 | return 1; |
2426 | } |
2427 | |
2428 | if (read(fd, bootSect, 512) != 512) { |
2429 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2430 | device, strerror(errno)); |
2431 | return 1; |
2432 | } |
2433 | close(fd); |
2434 | |
2435 | /* first three bytes should match, a jmp short should be in there */ |
2436 | if (memcmp(boot, bootSect, 3)) |
2437 | return 0; |
2438 | |
2439 | if (boot[1] == 0xeb) { |
2440 | offset = boot[2] + 2; |
2441 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
2442 | offset = (boot[3] << 8) + boot[2] + 2; |
2443 | } else if (boot[0] == 0xeb) { |
2444 | offset = boot[1] + 2; |
2445 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
2446 | offset = (boot[2] << 8) + boot[1] + 2; |
2447 | } else { |
2448 | return 0; |
2449 | } |
2450 | |
2451 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
2452 | return 0; |
2453 | |
2454 | return 2; |
2455 | } |
2456 | |
2457 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { |
2458 | int fd; |
2459 | char buf[65536]; |
2460 | char * end; |
2461 | char * chptr; |
2462 | char * chptr2; |
2463 | int rc; |
2464 | |
2465 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
2466 | *raw* devices listed in there */ |
2467 | |
2468 | if (!strncmp(mdDev, "/dev/", 5)) |
2469 | mdDev += 5; |
2470 | |
2471 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
2472 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
2473 | strerror(errno)); |
2474 | return 2; |
2475 | } |
2476 | |
2477 | rc = read(fd, buf, sizeof(buf) - 1); |
2478 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
2479 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
2480 | strerror(errno)); |
2481 | close(fd); |
2482 | return 2; |
2483 | } |
2484 | close(fd); |
2485 | buf[rc] = '\0'; |
2486 | |
2487 | chptr = buf; |
2488 | while (*chptr) { |
2489 | end = strchr(chptr, '\n'); |
2490 | if (!end) break; |
2491 | *end = '\0'; |
2492 | |
2493 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
2494 | chptr[strlen(mdDev)] == ' ') { |
2495 | |
2496 | /* found the device */ |
2497 | while (*chptr && *chptr != ':') chptr++; |
2498 | chptr++; |
2499 | while (*chptr && isspace(*chptr)) chptr++; |
2500 | |
2501 | /* skip the "active" bit */ |
2502 | while (*chptr && !isspace(*chptr)) chptr++; |
2503 | while (*chptr && isspace(*chptr)) chptr++; |
2504 | |
2505 | /* skip the raid level */ |
2506 | while (*chptr && !isspace(*chptr)) chptr++; |
2507 | while (*chptr && isspace(*chptr)) chptr++; |
2508 | |
2509 | /* everything else is partition stuff */ |
2510 | while (*chptr) { |
2511 | chptr2 = chptr; |
2512 | while (*chptr2 && *chptr2 != '[') chptr2++; |
2513 | if (!*chptr2) break; |
2514 | |
2515 | /* yank off the numbers at the end */ |
2516 | chptr2--; |
2517 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; |
2518 | chptr2++; |
2519 | *chptr2 = '\0'; |
2520 | |
2521 | /* Better, now we need the /dev/ back. We're done with |
2522 | * everything before this point, so we can just put |
2523 | * the /dev/ part there. There will always be room. */ |
2524 | memcpy(chptr - 5, "/dev/", 5); |
2525 | rc = checkDeviceBootloader(chptr - 5, boot); |
2526 | if (rc != 2) { |
2527 | return rc; |
2528 | } |
2529 | |
2530 | chptr = chptr2 + 1; |
2531 | /* skip the [11] bit */ |
2532 | while (*chptr && !isspace(*chptr)) chptr++; |
2533 | /* and move to the next one */ |
2534 | while (*chptr && isspace(*chptr)) chptr++; |
2535 | } |
2536 | |
2537 | /* we're good to go */ |
2538 | return 2; |
2539 | } |
2540 | |
2541 | chptr = end + 1; |
2542 | } |
2543 | |
2544 | fprintf(stderr, |
2545 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
2546 | mdDev); |
2547 | return 0; |
2548 | } |
2549 | |
2550 | int checkForLilo(struct grubConfig * config) { |
2551 | int fd; |
2552 | unsigned char boot[512]; |
2553 | struct singleLine * line; |
2554 | |
2555 | for (line = config->theLines; line; line = line->next) |
2556 | if (line->type == LT_BOOT) break; |
2557 | |
2558 | if (!line) { |
2559 | fprintf(stderr, |
2560 | _("grubby: no boot line found in lilo configuration\n")); |
2561 | return 1; |
2562 | } |
2563 | |
2564 | if (line->numElements != 2) return 1; |
2565 | |
2566 | fd = open("/boot/boot.b", O_RDONLY); |
2567 | if (fd < 0) { |
2568 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
2569 | "/boot/boot.b", strerror(errno)); |
2570 | return 1; |
2571 | } |
2572 | |
2573 | if (read(fd, boot, 512) != 512) { |
2574 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2575 | "/boot/boot.b", strerror(errno)); |
2576 | return 1; |
2577 | } |
2578 | close(fd); |
2579 | |
2580 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
2581 | return checkLiloOnRaid(line->elements[1].item, boot); |
2582 | |
2583 | return checkDeviceBootloader(line->elements[1].item, boot); |
2584 | } |
2585 | |
2586 | int checkForGrub2(struct grubConfig * config) { |
2587 | if (!access("/boot/grub2", R_OK)) |
2588 | return 2; |
2589 | |
2590 | return 1; |
2591 | } |
2592 | |
2593 | int checkForGrub(struct grubConfig * config) { |
2594 | int fd; |
2595 | unsigned char bootSect[512]; |
2596 | char * boot; |
2597 | |
2598 | if (parseSysconfigGrub(NULL, &boot)) |
2599 | return 0; |
2600 | |
2601 | /* assume grub is not installed -- not an error condition */ |
2602 | if (!boot) |
2603 | return 0; |
2604 | |
2605 | fd = open("/boot/grub/stage1", O_RDONLY); |
2606 | if (fd < 0) |
2607 | /* this doesn't exist if grub hasn't been installed */ |
2608 | return 0; |
2609 | |
2610 | if (read(fd, bootSect, 512) != 512) { |
2611 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2612 | "/boot/grub/stage1", strerror(errno)); |
2613 | close(fd); |
2614 | return 1; |
2615 | } |
2616 | close(fd); |
2617 | |
2618 | return checkDeviceBootloader(boot, bootSect); |
2619 | } |
2620 | |
2621 | int checkForExtLinux(struct grubConfig * config) { |
2622 | int fd; |
2623 | unsigned char bootSect[512]; |
2624 | char * boot; |
2625 | char executable[] = "/boot/extlinux/extlinux"; |
2626 | |
2627 | printf("entered: checkForExtLinux()\n"); |
2628 | |
2629 | if (parseSysconfigGrub(NULL, &boot)) |
2630 | return 0; |
2631 | |
2632 | /* assume grub is not installed -- not an error condition */ |
2633 | if (!boot) |
2634 | return 0; |
2635 | |
2636 | fd = open(executable, O_RDONLY); |
2637 | if (fd < 0) |
2638 | /* this doesn't exist if grub hasn't been installed */ |
2639 | return 0; |
2640 | |
2641 | if (read(fd, bootSect, 512) != 512) { |
2642 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2643 | executable, strerror(errno)); |
2644 | return 1; |
2645 | } |
2646 | close(fd); |
2647 | |
2648 | return checkDeviceBootloader(boot, bootSect); |
2649 | } |
2650 | |
2651 | static char * getRootSpecifier(char * str) { |
2652 | char * idx, * rootspec = NULL; |
2653 | |
2654 | if (*str == '(') { |
2655 | idx = rootspec = strdup(str); |
2656 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; |
2657 | *(++idx) = '\0'; |
2658 | } |
2659 | return rootspec; |
2660 | } |
2661 | |
2662 | static char * getInitrdVal(struct grubConfig * config, |
2663 | const char * prefix, struct singleLine *tmplLine, |
2664 | const char * newKernelInitrd, |
2665 | char ** extraInitrds, int extraInitrdCount) |
2666 | { |
2667 | char *initrdVal, *end; |
2668 | int i; |
2669 | size_t totalSize; |
2670 | size_t prefixLen; |
2671 | char separatorChar; |
2672 | |
2673 | prefixLen = strlen(prefix); |
2674 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */; |
2675 | |
2676 | for (i = 0; i < extraInitrdCount; i++) { |
2677 | totalSize += sizeof(separatorChar); |
2678 | totalSize += strlen(extraInitrds[i]) - prefixLen; |
2679 | } |
2680 | |
2681 | initrdVal = end = malloc(totalSize); |
2682 | |
2683 | end = stpcpy (end, newKernelInitrd + prefixLen); |
2684 | |
2685 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; |
2686 | for (i = 0; i < extraInitrdCount; i++) { |
2687 | const char *extraInitrd; |
2688 | int j; |
2689 | |
2690 | extraInitrd = extraInitrds[i] + prefixLen; |
2691 | /* Don't add entries that are already there */ |
2692 | if (tmplLine != NULL) { |
2693 | for (j = 2; j < tmplLine->numElements; j++) |
2694 | if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0) |
2695 | break; |
2696 | |
2697 | if (j != tmplLine->numElements) |
2698 | continue; |
2699 | } |
2700 | |
2701 | *end++ = separatorChar; |
2702 | end = stpcpy(end, extraInitrd); |
2703 | } |
2704 | |
2705 | return initrdVal; |
2706 | } |
2707 | |
2708 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, |
2709 | const char * prefix, |
2710 | char * newKernelPath, char * newKernelTitle, |
2711 | char * newKernelArgs, char * newKernelInitrd, |
2712 | char ** extraInitrds, int extraInitrdCount, |
2713 | char * newMBKernel, char * newMBKernelArgs) { |
2714 | struct singleEntry * new; |
2715 | struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL; |
2716 | int needs; |
2717 | char * chptr; |
2718 | |
2719 | if (!newKernelPath) return 0; |
2720 | |
2721 | /* if the newKernelTitle is too long silently munge it into something |
2722 | * we can live with. truncating is first check, then we'll just mess with |
2723 | * it until it looks better */ |
2724 | if (config->cfi->maxTitleLength && |
2725 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
2726 | char * buf = alloca(config->cfi->maxTitleLength + 7); |
2727 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); |
2728 | int i = 1; |
2729 | |
2730 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); |
2731 | while (findEntryByPath(config, buf, NULL, NULL)) { |
2732 | sprintf(numBuf, "%d", i++); |
2733 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
2734 | } |
2735 | |
2736 | newKernelTitle = buf + 6; |
2737 | } |
2738 | |
2739 | new = malloc(sizeof(*new)); |
2740 | new->skip = 0; |
2741 | new->multiboot = 0; |
2742 | new->next = config->entries; |
2743 | new->lines = NULL; |
2744 | config->entries = new; |
2745 | |
2746 | /* copy/update from the template */ |
2747 | needs = NEED_KERNEL | NEED_TITLE; |
2748 | if (newKernelInitrd) |
2749 | needs |= NEED_INITRD; |
2750 | if (newMBKernel) { |
2751 | needs |= NEED_MB; |
2752 | new->multiboot = 1; |
2753 | } |
2754 | |
2755 | if (template) { |
2756 | for (masterLine = template->lines; |
2757 | masterLine && (tmplLine = lineDup(masterLine)); |
2758 | lineFree(tmplLine), masterLine = masterLine->next) |
2759 | { |
2760 | dbgPrintf("addNewKernel processing %d\n", tmplLine->type); |
2761 | |
2762 | /* skip comments */ |
2763 | chptr = tmplLine->indent; |
2764 | while (*chptr && isspace(*chptr)) chptr++; |
2765 | if (*chptr == '#') continue; |
2766 | |
2767 | if (tmplLine->type == LT_KERNEL && |
2768 | tmplLine->numElements >= 2) { |
2769 | if (!template->multiboot && (needs & NEED_MB)) { |
2770 | /* it's not a multiboot template and this is the kernel |
2771 | * line. Try to be intelligent about inserting the |
2772 | * hypervisor at the same time. |
2773 | */ |
2774 | if (config->cfi->mbHyperFirst) { |
2775 | /* insert the hypervisor first */ |
2776 | newLine = addLine(new, config->cfi, LT_HYPER, |
2777 | tmplLine->indent, |
2778 | newMBKernel + strlen(prefix)); |
2779 | /* set up for adding the kernel line */ |
2780 | free(tmplLine->indent); |
2781 | tmplLine->indent = strdup(config->secondaryIndent); |
2782 | needs &= ~NEED_MB; |
2783 | } |
2784 | if (needs & NEED_KERNEL) { |
2785 | /* use addLineTmpl to preserve line elements, |
2786 | * otherwise we could just call addLine. Unfortunately |
2787 | * this means making some changes to the template |
2788 | * such as the indent change above and the type |
2789 | * change below. |
2790 | */ |
2791 | struct keywordTypes * mbm_kw = |
2792 | getKeywordByType(LT_MBMODULE, config->cfi); |
2793 | if (mbm_kw) { |
2794 | tmplLine->type = LT_MBMODULE; |
2795 | free(tmplLine->elements[0].item); |
2796 | tmplLine->elements[0].item = strdup(mbm_kw->key); |
2797 | } |
2798 | newLine = addLineTmpl(new, tmplLine, newLine, |
2799 | newKernelPath + strlen(prefix), config->cfi); |
2800 | needs &= ~NEED_KERNEL; |
2801 | } |
2802 | if (needs & NEED_MB) { /* !mbHyperFirst */ |
2803 | newLine = addLine(new, config->cfi, LT_HYPER, |
2804 | config->secondaryIndent, |
2805 | newMBKernel + strlen(prefix)); |
2806 | needs &= ~NEED_MB; |
2807 | } |
2808 | } else if (needs & NEED_KERNEL) { |
2809 | newLine = addLineTmpl(new, tmplLine, newLine, |
2810 | newKernelPath + strlen(prefix), config->cfi); |
2811 | needs &= ~NEED_KERNEL; |
2812 | } |
2813 | |
2814 | } else if (tmplLine->type == LT_HYPER && |
2815 | tmplLine->numElements >= 2) { |
2816 | if (needs & NEED_MB) { |
2817 | newLine = addLineTmpl(new, tmplLine, newLine, |
2818 | newMBKernel + strlen(prefix), config->cfi); |
2819 | needs &= ~NEED_MB; |
2820 | } |
2821 | |
2822 | } else if (tmplLine->type == LT_MBMODULE && |
2823 | tmplLine->numElements >= 2) { |
2824 | if (new->multiboot) { |
2825 | if (needs & NEED_KERNEL) { |
2826 | newLine = addLineTmpl(new, tmplLine, newLine, |
2827 | newKernelPath + |
2828 | strlen(prefix), config->cfi); |
2829 | needs &= ~NEED_KERNEL; |
2830 | } else if (config->cfi->mbInitRdIsModule && |
2831 | (needs & NEED_INITRD)) { |
2832 | char *initrdVal; |
2833 | initrdVal = getInitrdVal(config, prefix, tmplLine, |
2834 | newKernelInitrd, extraInitrds, |
2835 | extraInitrdCount); |
2836 | newLine = addLineTmpl(new, tmplLine, newLine, |
2837 | initrdVal, config->cfi); |
2838 | free(initrdVal); |
2839 | needs &= ~NEED_INITRD; |
2840 | } |
2841 | } else if (needs & NEED_KERNEL) { |
2842 | /* template is multi but new is not, |
2843 | * insert the kernel in the first module slot |
2844 | */ |
2845 | tmplLine->type = LT_KERNEL; |
2846 | free(tmplLine->elements[0].item); |
2847 | tmplLine->elements[0].item = |
2848 | strdup(getKeywordByType(LT_KERNEL, config->cfi)->key); |
2849 | newLine = addLineTmpl(new, tmplLine, newLine, |
2850 | newKernelPath + strlen(prefix), config->cfi); |
2851 | needs &= ~NEED_KERNEL; |
2852 | } else if (needs & NEED_INITRD) { |
2853 | char *initrdVal; |
2854 | /* template is multi but new is not, |
2855 | * insert the initrd in the second module slot |
2856 | */ |
2857 | tmplLine->type = LT_INITRD; |
2858 | free(tmplLine->elements[0].item); |
2859 | tmplLine->elements[0].item = |
2860 | strdup(getKeywordByType(LT_INITRD, config->cfi)->key); |
2861 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
2862 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
2863 | free(initrdVal); |
2864 | needs &= ~NEED_INITRD; |
2865 | } |
2866 | |
2867 | } else if (tmplLine->type == LT_INITRD && |
2868 | tmplLine->numElements >= 2) { |
2869 | if (needs & NEED_INITRD && |
2870 | new->multiboot && !template->multiboot && |
2871 | config->cfi->mbInitRdIsModule) { |
2872 | /* make sure we don't insert the module initrd |
2873 | * before the module kernel... if we don't do it here, |
2874 | * it will be inserted following the template. |
2875 | */ |
2876 | if (!needs & NEED_KERNEL) { |
2877 | char *initrdVal; |
2878 | |
2879 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
2880 | newLine = addLine(new, config->cfi, LT_MBMODULE, |
2881 | config->secondaryIndent, |
2882 | initrdVal); |
2883 | free(initrdVal); |
2884 | needs &= ~NEED_INITRD; |
2885 | } |
2886 | } else if (needs & NEED_INITRD) { |
2887 | char *initrdVal; |
2888 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
2889 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
2890 | free(initrdVal); |
2891 | needs &= ~NEED_INITRD; |
2892 | } |
2893 | |
2894 | } else if (tmplLine->type == LT_MENUENTRY && |
2895 | (needs & NEED_TITLE)) { |
2896 | requote(tmplLine, config->cfi); |
2897 | char *nkt = malloc(strlen(newKernelTitle)+3); |
2898 | strcpy(nkt, "'"); |
2899 | strcat(nkt, newKernelTitle); |
2900 | strcat(nkt, "'"); |
2901 | newLine = addLineTmpl(new, tmplLine, newLine, nkt, config->cfi); |
2902 | free(nkt); |
2903 | needs &= ~NEED_TITLE; |
2904 | } else if (tmplLine->type == LT_TITLE && |
2905 | (needs & NEED_TITLE)) { |
2906 | if (tmplLine->numElements >= 2) { |
2907 | newLine = addLineTmpl(new, tmplLine, newLine, |
2908 | newKernelTitle, config->cfi); |
2909 | needs &= ~NEED_TITLE; |
2910 | } else if (tmplLine->numElements == 1 && |
2911 | config->cfi->titleBracketed) { |
2912 | /* addLineTmpl doesn't handle titleBracketed */ |
2913 | newLine = addLine(new, config->cfi, LT_TITLE, |
2914 | tmplLine->indent, newKernelTitle); |
2915 | needs &= ~NEED_TITLE; |
2916 | } |
2917 | } else if (tmplLine->type == LT_ECHO) { |
2918 | requote(tmplLine, config->cfi); |
2919 | if (tmplLine->numElements > 1 && |
2920 | strstr(tmplLine->elements[1].item, "'Loading Linux ")) { |
2921 | char *prefix = "'Loading "; |
2922 | char *newTitle = malloc(strlen(prefix) + |
2923 | strlen(newKernelTitle) + 2); |
2924 | |
2925 | strcpy(newTitle, prefix); |
2926 | strcat(newTitle, newKernelTitle); |
2927 | strcat(newTitle, "'"); |
2928 | newLine = addLine(new, config->cfi, LT_ECHO, |
2929 | tmplLine->indent, newTitle); |
2930 | free(newTitle); |
2931 | } else { |
2932 | /* pass through other lines from the template */ |
2933 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, |
2934 | config->cfi); |
2935 | } |
2936 | } else { |
2937 | /* pass through other lines from the template */ |
2938 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); |
2939 | } |
2940 | } |
2941 | |
2942 | } else { |
2943 | /* don't have a template, so start the entry with the |
2944 | * appropriate starting line |
2945 | */ |
2946 | switch (config->cfi->entryStart) { |
2947 | case LT_KERNEL: |
2948 | if (new->multiboot && config->cfi->mbHyperFirst) { |
2949 | /* fall through to LT_HYPER */ |
2950 | } else { |
2951 | newLine = addLine(new, config->cfi, LT_KERNEL, |
2952 | config->primaryIndent, |
2953 | newKernelPath + strlen(prefix)); |
2954 | needs &= ~NEED_KERNEL; |
2955 | break; |
2956 | } |
2957 | |
2958 | case LT_HYPER: |
2959 | newLine = addLine(new, config->cfi, LT_HYPER, |
2960 | config->primaryIndent, |
2961 | newMBKernel + strlen(prefix)); |
2962 | needs &= ~NEED_MB; |
2963 | break; |
2964 | |
2965 | case LT_MENUENTRY: { |
2966 | char *nkt = malloc(strlen(newKernelTitle)+3); |
2967 | strcpy(nkt, "'"); |
2968 | strcat(nkt, newKernelTitle); |
2969 | strcat(nkt, "'"); |
2970 | newLine = addLine(new, config->cfi, LT_MENUENTRY, |
2971 | config->primaryIndent, nkt); |
2972 | free(nkt); |
2973 | needs &= ~NEED_TITLE; |
2974 | needs |= NEED_END; |
2975 | break; |
2976 | } |
2977 | case LT_TITLE: |
2978 | if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above) |
2979 | char * templabel; |
2980 | int x = 0, y = 0; |
2981 | |
2982 | templabel = strdup(newKernelTitle); |
2983 | while( templabel[x]){ |
2984 | if( templabel[x] == ' ' ){ |
2985 | y = x; |
2986 | while( templabel[y] ){ |
2987 | templabel[y] = templabel[y+1]; |
2988 | y++; |
2989 | } |
2990 | } |
2991 | x++; |
2992 | } |
2993 | newLine = addLine(new, config->cfi, LT_TITLE, |
2994 | config->primaryIndent, templabel); |
2995 | free(templabel); |
2996 | }else{ |
2997 | newLine = addLine(new, config->cfi, LT_TITLE, |
2998 | config->primaryIndent, newKernelTitle); |
2999 | } |
3000 | needs &= ~NEED_TITLE; |
3001 | break; |
3002 | |
3003 | default: |
3004 | abort(); |
3005 | } |
3006 | } |
3007 | |
3008 | /* add the remainder of the lines, i.e. those that either |
3009 | * weren't present in the template, or in the case of no template, |
3010 | * all the lines following the entryStart. |
3011 | */ |
3012 | if (needs & NEED_TITLE) { |
3013 | newLine = addLine(new, config->cfi, LT_TITLE, |
3014 | config->secondaryIndent, |
3015 | newKernelTitle); |
3016 | needs &= ~NEED_TITLE; |
3017 | } |
3018 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
3019 | newLine = addLine(new, config->cfi, LT_HYPER, |
3020 | config->secondaryIndent, |
3021 | newMBKernel + strlen(prefix)); |
3022 | needs &= ~NEED_MB; |
3023 | } |
3024 | if (needs & NEED_KERNEL) { |
3025 | newLine = addLine(new, config->cfi, |
3026 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3027 | config->cfi)) ? |
3028 | LT_MBMODULE : LT_KERNEL, |
3029 | config->secondaryIndent, |
3030 | newKernelPath + strlen(prefix)); |
3031 | needs &= ~NEED_KERNEL; |
3032 | } |
3033 | if (needs & NEED_MB) { |
3034 | newLine = addLine(new, config->cfi, LT_HYPER, |
3035 | config->secondaryIndent, |
3036 | newMBKernel + strlen(prefix)); |
3037 | needs &= ~NEED_MB; |
3038 | } |
3039 | if (needs & NEED_INITRD) { |
3040 | char *initrdVal; |
3041 | initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount); |
3042 | newLine = addLine(new, config->cfi, |
3043 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3044 | config->cfi)) ? |
3045 | LT_MBMODULE : LT_INITRD, |
3046 | config->secondaryIndent, |
3047 | initrdVal); |
3048 | free(initrdVal); |
3049 | needs &= ~NEED_INITRD; |
3050 | } |
3051 | if (needs & NEED_END) { |
3052 | newLine = addLine(new, config->cfi, LT_ENTRY_END, |
3053 | config->secondaryIndent, NULL); |
3054 | needs &= ~NEED_END; |
3055 | } |
3056 | |
3057 | if (needs) { |
3058 | printf(_("grubby: needs=%d, aborting\n"), needs); |
3059 | abort(); |
3060 | } |
3061 | |
3062 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, |
3063 | newMBKernelArgs, NULL)) return 1; |
3064 | |
3065 | return 0; |
3066 | } |
3067 | |
3068 | static void traceback(int signum) |
3069 | { |
3070 | void *array[40]; |
3071 | size_t size; |
3072 | |
3073 | signal(SIGSEGV, SIG_DFL); |
3074 | memset(array, '\0', sizeof (array)); |
3075 | size = backtrace(array, 40); |
3076 | |
3077 | fprintf(stderr, "grubby recieved SIGSEGV! Backtrace (%ld):\n", |
3078 | (unsigned long)size); |
3079 | backtrace_symbols_fd(array, size, STDERR_FILENO); |
3080 | exit(1); |
3081 | } |
3082 | |
3083 | int main(int argc, const char ** argv) { |
3084 | poptContext optCon; |
3085 | const char * grubConfig = NULL; |
3086 | char * outputFile = NULL; |
3087 | int arg = 0; |
3088 | int flags = 0; |
3089 | int badImageOkay = 0; |
3090 | int configureGrub2 = 0; |
3091 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
3092 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
3093 | int configureExtLinux = 0; |
3094 | int bootloaderProbe = 0; |
3095 | int extraInitrdCount = 0; |
3096 | char * updateKernelPath = NULL; |
3097 | char * newKernelPath = NULL; |
3098 | char * removeKernelPath = NULL; |
3099 | char * newKernelArgs = NULL; |
3100 | char * newKernelInitrd = NULL; |
3101 | char * newKernelTitle = NULL; |
3102 | char * newKernelVersion = NULL; |
3103 | char * newMBKernel = NULL; |
3104 | char * newMBKernelArgs = NULL; |
3105 | char * removeMBKernelArgs = NULL; |
3106 | char * removeMBKernel = NULL; |
3107 | char * bootPrefix = NULL; |
3108 | char * defaultKernel = NULL; |
3109 | char * removeArgs = NULL; |
3110 | char * kernelInfo = NULL; |
3111 | char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
3112 | const char * chptr = NULL; |
3113 | struct configFileInfo * cfi = NULL; |
3114 | struct grubConfig * config; |
3115 | struct singleEntry * template = NULL; |
3116 | int copyDefault = 0, makeDefault = 0; |
3117 | int displayDefault = 0; |
3118 | struct poptOption options[] = { |
3119 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
3120 | _("add an entry for the specified kernel"), _("kernel-path") }, |
3121 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
3122 | _("add an entry for the specified multiboot kernel"), NULL }, |
3123 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
3124 | _("default arguments for the new kernel or new arguments for " |
3125 | "kernel being updated"), _("args") }, |
3126 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
3127 | _("default arguments for the new multiboot kernel or " |
3128 | "new arguments for multiboot kernel being updated"), NULL }, |
3129 | { "bad-image-okay", 0, 0, &badImageOkay, 0, |
3130 | _("don't sanity check images in boot entries (for testing only)"), |
3131 | NULL }, |
3132 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
3133 | _("filestystem which contains /boot directory (for testing only)"), |
3134 | _("bootfs") }, |
3135 | #if defined(__i386__) || defined(__x86_64__) |
3136 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
3137 | _("check if lilo is installed on lilo.conf boot sector") }, |
3138 | #endif |
3139 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
3140 | _("path to grub config file to update (\"-\" for stdin)"), |
3141 | _("path") }, |
3142 | { "copy-default", 0, 0, ©Default, 0, |
3143 | _("use the default boot entry as a template for the new entry " |
3144 | "being added; if the default is not a linux image, or if " |
3145 | "the kernel referenced by the default image does not exist, " |
3146 | "the first linux entry whose kernel does exist is used as the " |
3147 | "template"), NULL }, |
3148 | { "default-kernel", 0, 0, &displayDefault, 0, |
3149 | _("display the path of the default kernel") }, |
3150 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
3151 | _("configure elilo bootloader") }, |
3152 | { "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
3153 | _("configure extlinux bootloader (from syslinux)") }, |
3154 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
3155 | _("configure grub bootloader") }, |
3156 | { "grub2", 0, POPT_ARG_NONE, &configureGrub2, 0, |
3157 | _("configure grub2 bootloader") }, |
3158 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
3159 | _("display boot information for specified kernel"), |
3160 | _("kernel-path") }, |
3161 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
3162 | _("initrd image for the new kernel"), _("initrd-path") }, |
3163 | { "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
3164 | _("auxilliary initrd image for things other than the new kernel"), _("initrd-path") }, |
3165 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
3166 | _("configure lilo bootloader") }, |
3167 | { "make-default", 0, 0, &makeDefault, 0, |
3168 | _("make the newly added entry the default boot entry"), NULL }, |
3169 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
3170 | _("path to output updated config file (\"-\" for stdout)"), |
3171 | _("path") }, |
3172 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
3173 | _("remove kernel arguments"), NULL }, |
3174 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
3175 | _("remove multiboot kernel arguments"), NULL }, |
3176 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
3177 | _("remove all entries for the specified kernel"), |
3178 | _("kernel-path") }, |
3179 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
3180 | _("remove all entries for the specified multiboot kernel"), NULL }, |
3181 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
3182 | _("make the first entry referencing the specified kernel " |
3183 | "the default"), _("kernel-path") }, |
3184 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
3185 | _("configure silo bootloader") }, |
3186 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
3187 | _("title to use for the new kernel entry"), _("entry-title") }, |
3188 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
3189 | _("updated information for the specified kernel"), |
3190 | _("kernel-path") }, |
3191 | { "version", 'v', 0, NULL, 'v', |
3192 | _("print the version of this program and exit"), NULL }, |
3193 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
3194 | _("configure yaboot bootloader") }, |
3195 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
3196 | _("configure zipl bootloader") }, |
3197 | POPT_AUTOHELP |
3198 | { 0, 0, 0, 0, 0 } |
3199 | }; |
3200 | |
3201 | useextlinuxmenu=0; |
3202 | |
3203 | signal(SIGSEGV, traceback); |
3204 | |
3205 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
3206 | poptReadDefaultConfig(optCon, 1); |
3207 | |
3208 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
3209 | switch (arg) { |
3210 | case 'v': |
3211 | printf("grubby version %s\n", VERSION); |
3212 | exit(0); |
3213 | break; |
3214 | case 'i': |
3215 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { |
3216 | extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon)); |
3217 | } else { |
3218 | fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount); |
3219 | return 1; |
3220 | } |
3221 | break; |
3222 | } |
3223 | } |
3224 | |
3225 | if (arg < -1) { |
3226 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
3227 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
3228 | poptStrerror(arg)); |
3229 | return 1; |
3230 | } |
3231 | |
3232 | if ((chptr = poptGetArg(optCon))) { |
3233 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
3234 | return 1; |
3235 | } |
3236 | |
3237 | if ((configureLilo + configureGrub2 + configureGrub + configureELilo + |
3238 | configureYaboot + configureSilo + configureZipl + |
3239 | configureExtLinux ) > 1) { |
3240 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); |
3241 | return 1; |
3242 | } else if (bootloaderProbe && grubConfig) { |
3243 | fprintf(stderr, |
3244 | _("grubby: cannot specify config file with --bootloader-probe\n")); |
3245 | return 1; |
3246 | } else if (configureGrub2) { |
3247 | cfi = &grub2ConfigType; |
3248 | } else if (configureLilo) { |
3249 | cfi = &liloConfigType; |
3250 | } else if (configureGrub) { |
3251 | cfi = &grubConfigType; |
3252 | } else if (configureELilo) { |
3253 | cfi = &eliloConfigType; |
3254 | } else if (configureYaboot) { |
3255 | cfi = &yabootConfigType; |
3256 | } else if (configureSilo) { |
3257 | cfi = &siloConfigType; |
3258 | } else if (configureZipl) { |
3259 | cfi = &ziplConfigType; |
3260 | } else if (configureExtLinux) { |
3261 | cfi = &extlinuxConfigType; |
3262 | useextlinuxmenu=1; |
3263 | } |
3264 | |
3265 | if (!cfi) { |
3266 | #ifdef __ia64__ |
3267 | cfi = &eliloConfigType; |
3268 | #elif __powerpc__ |
3269 | cfi = &yabootConfigType; |
3270 | #elif __sparc__ |
3271 | cfi = &siloConfigType; |
3272 | #elif __s390__ |
3273 | cfi = &ziplConfigType; |
3274 | #elif __s390x__ |
3275 | cfi = &ziplConfigtype; |
3276 | #else |
3277 | if (grub2FindConfig(&grub2ConfigType)) |
3278 | cfi = &grub2ConfigType; |
3279 | else |
3280 | cfi = &grubConfigType; |
3281 | #endif |
3282 | } |
3283 | |
3284 | if (!grubConfig) { |
3285 | if (cfi->findConfig) |
3286 | grubConfig = cfi->findConfig(cfi); |
3287 | if (!grubConfig) |
3288 | grubConfig = cfi->defaultConfig; |
3289 | } |
3290 | |
3291 | if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion || |
3292 | newKernelPath || removeKernelPath || makeDefault || |
3293 | defaultKernel)) { |
3294 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " |
3295 | "specified option")); |
3296 | return 1; |
3297 | } |
3298 | |
3299 | if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath || |
3300 | removeKernelPath)) { |
3301 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
3302 | "be used when adding or removing kernels\n")); |
3303 | return 1; |
3304 | } |
3305 | |
3306 | if (newKernelPath && !newKernelTitle) { |
3307 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
3308 | return 1; |
3309 | } else if (!newKernelPath && (newKernelTitle || copyDefault || |
3310 | (newKernelInitrd && !updateKernelPath)|| |
3311 | makeDefault || extraInitrdCount > 0)) { |
3312 | fprintf(stderr, _("grubby: kernel path expected\n")); |
3313 | return 1; |
3314 | } |
3315 | |
3316 | if (newKernelPath && updateKernelPath) { |
3317 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
3318 | "not be used together")); |
3319 | return 1; |
3320 | } |
3321 | |
3322 | if (makeDefault && defaultKernel) { |
3323 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
3324 | "may not be used together\n")); |
3325 | return 1; |
3326 | } else if (defaultKernel && removeKernelPath && |
3327 | !strcmp(defaultKernel, removeKernelPath)) { |
3328 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); |
3329 | return 1; |
3330 | } else if (defaultKernel && newKernelPath && |
3331 | !strcmp(defaultKernel, newKernelPath)) { |
3332 | makeDefault = 1; |
3333 | defaultKernel = NULL; |
3334 | } |
3335 | |
3336 | if (!strcmp(grubConfig, "-") && !outputFile) { |
3337 | fprintf(stderr, _("grubby: output file must be specified if stdin " |
3338 | "is used\n")); |
3339 | return 1; |
3340 | } |
3341 | |
3342 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel |
3343 | && !kernelInfo && !bootloaderProbe && !updateKernelPath |
3344 | && !removeMBKernel) { |
3345 | fprintf(stderr, _("grubby: no action specified\n")); |
3346 | return 1; |
3347 | } |
3348 | |
3349 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
3350 | |
3351 | if (cfi->needsBootPrefix) { |
3352 | if (!bootPrefix) { |
3353 | bootPrefix = findBootPrefix(); |
3354 | if (!bootPrefix) return 1; |
3355 | } else { |
3356 | /* this shouldn't end with a / */ |
3357 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
3358 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
3359 | } |
3360 | } else { |
3361 | bootPrefix = ""; |
3362 | } |
3363 | |
3364 | if (!cfi->mbAllowExtraInitRds && |
3365 | extraInitrdCount > 0) { |
3366 | fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig); |
3367 | return 1; |
3368 | } |
3369 | |
3370 | if (bootloaderProbe) { |
3371 | int lrc = 0, grc = 0, gr2c = 0, erc = 0; |
3372 | struct grubConfig * lconfig, * gconfig; |
3373 | |
3374 | const char *grub2config = grub2FindConfig(&grub2ConfigType); |
3375 | if (grub2config) { |
3376 | gconfig = readConfig(grub2config, &grub2ConfigType); |
3377 | if (!gconfig) |
3378 | gr2c = 1; |
3379 | else |
3380 | gr2c = checkForGrub2(gconfig); |
3381 | } |
3382 | |
3383 | if (!access(grubConfigType.defaultConfig, F_OK)) { |
3384 | gconfig = readConfig(grubConfigType.defaultConfig, &grubConfigType); |
3385 | if (!gconfig) |
3386 | grc = 1; |
3387 | else |
3388 | grc = checkForGrub(gconfig); |
3389 | } |
3390 | |
3391 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
3392 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); |
3393 | if (!lconfig) |
3394 | lrc = 1; |
3395 | else |
3396 | lrc = checkForLilo(lconfig); |
3397 | } |
3398 | |
3399 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
3400 | lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType); |
3401 | if (!lconfig) |
3402 | erc = 1; |
3403 | else |
3404 | erc = checkForExtLinux(lconfig); |
3405 | } |
3406 | |
3407 | if (lrc == 1 || grc == 1 || gr2c == 1) return 1; |
3408 | |
3409 | if (lrc == 2) printf("lilo\n"); |
3410 | if (gr2c == 2) printf("grub2\n"); |
3411 | if (grc == 2) printf("grub\n"); |
3412 | if (erc == 2) printf("extlinux\n"); |
3413 | |
3414 | return 0; |
3415 | } |
3416 | |
3417 | config = readConfig(grubConfig, cfi); |
3418 | if (!config) return 1; |
3419 | |
3420 | if (displayDefault) { |
3421 | struct singleLine * line; |
3422 | struct singleEntry * entry; |
3423 | char * rootspec; |
3424 | |
3425 | if (config->defaultImage == -1) return 0; |
3426 | entry = findEntryByIndex(config, config->defaultImage); |
3427 | if (!entry) return 0; |
3428 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; |
3429 | |
3430 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
3431 | if (!line) return 0; |
3432 | |
3433 | rootspec = getRootSpecifier(line->elements[1].item); |
3434 | printf("%s%s\n", bootPrefix, line->elements[1].item + |
3435 | ((rootspec != NULL) ? strlen(rootspec) : 0)); |
3436 | |
3437 | return 0; |
3438 | } else if (kernelInfo) |
3439 | return displayInfo(config, kernelInfo, bootPrefix); |
3440 | |
3441 | if (copyDefault) { |
3442 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
3443 | if (!template) return 1; |
3444 | } |
3445 | |
3446 | markRemovedImage(config, removeKernelPath, bootPrefix); |
3447 | markRemovedImage(config, removeMBKernel, bootPrefix); |
3448 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, |
3449 | bootPrefix, flags); |
3450 | setFallbackImage(config, newKernelPath != NULL); |
3451 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
3452 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; |
3453 | if (updateKernelPath && newKernelInitrd) { |
3454 | if (updateInitrd(config, updateKernelPath, bootPrefix, |
3455 | newKernelInitrd)) return 1; |
3456 | } |
3457 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
3458 | newKernelTitle, newKernelArgs, newKernelInitrd, |
3459 | extraInitrds, extraInitrdCount, |
3460 | newMBKernel, newMBKernelArgs)) return 1; |
3461 | |
3462 | |
3463 | if (numEntries(config) == 0) { |
3464 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " |
3465 | "Not writing out new config.\n")); |
3466 | return 1; |
3467 | } |
3468 | |
3469 | if (!outputFile) |
3470 | outputFile = (char *)grubConfig; |
3471 | |
3472 | return writeConfig(config, outputFile, bootPrefix); |
3473 | } |