Contents of /trunk/mkinitrd-magellan/grubby/grubby.c
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Revision 1177 -
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Wed Dec 15 21:16:32 2010 UTC (13 years, 9 months ago) by niro
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File size: 92155 byte(s)
Wed Dec 15 21:16:32 2010 UTC (13 years, 9 months ago) by niro
File MIME type: text/plain
File size: 92155 byte(s)
-added check for return value of getuuidbydev() - resolves a segfault if the device does not exist - see rhbz#592294
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 | #define DEBUG 0 |
40 | |
41 | #if DEBUG |
42 | #define dbgPrintf(format, args...) fprintf(stderr, format , ## args) |
43 | #else |
44 | #define dbgPrintf(format, args...) |
45 | #endif |
46 | |
47 | #define _(A) (A) |
48 | |
49 | #define MAX_EXTRA_INITRDS 16 /* code segment checked by --bootloader-probe */ |
50 | #define CODE_SEG_SIZE 128 /* code segment checked by --bootloader-probe */ |
51 | |
52 | /* comments get lumped in with indention */ |
53 | struct lineElement { |
54 | char * item; |
55 | char * indent; |
56 | }; |
57 | |
58 | enum lineType_e { |
59 | LT_WHITESPACE = 1 << 0, |
60 | LT_TITLE = 1 << 1, |
61 | LT_KERNEL = 1 << 2, |
62 | LT_INITRD = 1 << 3, |
63 | LT_HYPER = 1 << 4, |
64 | LT_DEFAULT = 1 << 5, |
65 | LT_MBMODULE = 1 << 6, |
66 | LT_ROOT = 1 << 7, |
67 | LT_FALLBACK = 1 << 8, |
68 | LT_KERNELARGS = 1 << 9, |
69 | LT_BOOT = 1 << 10, |
70 | LT_BOOTROOT = 1 << 11, |
71 | LT_LBA = 1 << 12, |
72 | LT_OTHER = 1 << 13, |
73 | LT_GENERIC = 1 << 14, |
74 | LT_UNKNOWN = 1 << 15, |
75 | }; |
76 | |
77 | struct singleLine { |
78 | char * indent; |
79 | int numElements; |
80 | struct lineElement * elements; |
81 | struct singleLine * next; |
82 | enum lineType_e type; |
83 | }; |
84 | |
85 | struct singleEntry { |
86 | struct singleLine * lines; |
87 | int skip; |
88 | int multiboot; |
89 | struct singleEntry * next; |
90 | }; |
91 | |
92 | #define GRUBBY_BADIMAGE_OKAY (1 << 0) |
93 | |
94 | #define GRUB_CONFIG_NO_DEFAULT (1 << 0) /* don't write out default=0 */ |
95 | |
96 | /* These defines are (only) used in addNewKernel() */ |
97 | #define NEED_KERNEL (1 << 0) |
98 | #define NEED_INITRD (1 << 1) |
99 | #define NEED_TITLE (1 << 2) |
100 | #define NEED_ARGS (1 << 3) |
101 | #define NEED_MB (1 << 4) |
102 | |
103 | #define MAIN_DEFAULT (1 << 0) |
104 | #define DEFAULT_SAVED -2 |
105 | |
106 | struct keywordTypes { |
107 | char * key; |
108 | enum lineType_e type; |
109 | char nextChar; |
110 | char separatorChar; |
111 | }; |
112 | |
113 | struct configFileInfo { |
114 | char * defaultConfig; |
115 | struct keywordTypes * keywords; |
116 | int defaultIsIndex; |
117 | int defaultSupportSaved; |
118 | enum lineType_e entrySeparator; |
119 | int needsBootPrefix; |
120 | int argsInQuotes; |
121 | int maxTitleLength; |
122 | int titleBracketed; |
123 | int mbHyperFirst; |
124 | int mbInitRdIsModule; |
125 | int mbConcatArgs; |
126 | int mbAllowExtraInitRds; |
127 | }; |
128 | |
129 | struct keywordTypes grubKeywords[] = { |
130 | { "title", LT_TITLE, ' ' }, |
131 | { "root", LT_BOOTROOT, ' ' }, |
132 | { "default", LT_DEFAULT, ' ' }, |
133 | { "fallback", LT_FALLBACK, ' ' }, |
134 | { "kernel", LT_KERNEL, ' ' }, |
135 | { "initrd", LT_INITRD, ' ', ' ' }, |
136 | { "module", LT_MBMODULE, ' ' }, |
137 | { "kernel", LT_HYPER, ' ' }, |
138 | { NULL, 0, 0 }, |
139 | }; |
140 | |
141 | struct configFileInfo grubConfigType = { |
142 | "/boot/grub/grub.conf", /* defaultConfig */ |
143 | grubKeywords, /* keywords */ |
144 | 1, /* defaultIsIndex */ |
145 | 1, /* defaultSupportSaved */ |
146 | LT_TITLE, /* entrySeparator */ |
147 | 1, /* needsBootPrefix */ |
148 | 0, /* argsInQuotes */ |
149 | 0, /* maxTitleLength */ |
150 | 0, /* titleBracketed */ |
151 | 1, /* mbHyperFirst */ |
152 | 1, /* mbInitRdIsModule */ |
153 | 0, /* mbConcatArgs */ |
154 | 1, /* mbAllowExtraInitRds */ |
155 | }; |
156 | |
157 | struct keywordTypes yabootKeywords[] = { |
158 | { "label", LT_TITLE, '=' }, |
159 | { "root", LT_ROOT, '=' }, |
160 | { "default", LT_DEFAULT, '=' }, |
161 | { "image", LT_KERNEL, '=' }, |
162 | { "bsd", LT_GENERIC, '=' }, |
163 | { "macos", LT_GENERIC, '=' }, |
164 | { "macosx", LT_GENERIC, '=' }, |
165 | { "magicboot", LT_GENERIC, '=' }, |
166 | { "darwin", LT_GENERIC, '=' }, |
167 | { "timeout", LT_GENERIC, '=' }, |
168 | { "install", LT_GENERIC, '=' }, |
169 | { "fstype", LT_GENERIC, '=' }, |
170 | { "hfstype", LT_GENERIC, '=' }, |
171 | { "delay", LT_GENERIC, '=' }, |
172 | { "defaultos", LT_GENERIC, '=' }, |
173 | { "init-message", LT_GENERIC, '=' }, |
174 | { "enablecdboot", LT_GENERIC, ' ' }, |
175 | { "enableofboot", LT_GENERIC, ' ' }, |
176 | { "enablenetboot", LT_GENERIC, ' ' }, |
177 | { "nonvram", LT_GENERIC, ' ' }, |
178 | { "hide", LT_GENERIC, ' ' }, |
179 | { "protect", LT_GENERIC, ' ' }, |
180 | { "nobless", LT_GENERIC, ' ' }, |
181 | { "nonvram", LT_GENERIC, ' ' }, |
182 | { "brokenosx", LT_GENERIC, ' ' }, |
183 | { "usemount", LT_GENERIC, ' ' }, |
184 | { "mntpoint", LT_GENERIC, '=' }, |
185 | { "partition", LT_GENERIC, '=' }, |
186 | { "device", LT_GENERIC, '=' }, |
187 | { "fstype", LT_GENERIC, '=' }, |
188 | { "initrd", LT_INITRD, '=', ';' }, |
189 | { "append", LT_KERNELARGS, '=' }, |
190 | { "boot", LT_BOOT, '=' }, |
191 | { "lba", LT_LBA, ' ' }, |
192 | { NULL, 0, 0 }, |
193 | }; |
194 | |
195 | struct keywordTypes liloKeywords[] = { |
196 | { "label", LT_TITLE, '=' }, |
197 | { "root", LT_ROOT, '=' }, |
198 | { "default", LT_DEFAULT, '=' }, |
199 | { "image", LT_KERNEL, '=' }, |
200 | { "other", LT_OTHER, '=' }, |
201 | { "initrd", LT_INITRD, '=' }, |
202 | { "append", LT_KERNELARGS, '=' }, |
203 | { "boot", LT_BOOT, '=' }, |
204 | { "lba", LT_LBA, ' ' }, |
205 | { NULL, 0, 0 }, |
206 | }; |
207 | |
208 | struct keywordTypes eliloKeywords[] = { |
209 | { "label", LT_TITLE, '=' }, |
210 | { "root", LT_ROOT, '=' }, |
211 | { "default", LT_DEFAULT, '=' }, |
212 | { "image", LT_KERNEL, '=' }, |
213 | { "initrd", LT_INITRD, '=' }, |
214 | { "append", LT_KERNELARGS, '=' }, |
215 | { "vmm", LT_HYPER, '=' }, |
216 | { NULL, 0, 0 }, |
217 | }; |
218 | |
219 | struct keywordTypes siloKeywords[] = { |
220 | { "label", LT_TITLE, '=' }, |
221 | { "root", LT_ROOT, '=' }, |
222 | { "default", LT_DEFAULT, '=' }, |
223 | { "image", LT_KERNEL, '=' }, |
224 | { "other", LT_OTHER, '=' }, |
225 | { "initrd", LT_INITRD, '=' }, |
226 | { "append", LT_KERNELARGS, '=' }, |
227 | { "boot", LT_BOOT, '=' }, |
228 | { NULL, 0, 0 }, |
229 | }; |
230 | |
231 | struct keywordTypes ziplKeywords[] = { |
232 | { "target", LT_BOOTROOT, '=' }, |
233 | { "image", LT_KERNEL, '=' }, |
234 | { "ramdisk", LT_INITRD, '=' }, |
235 | { "parameters", LT_KERNELARGS, '=' }, |
236 | { "default", LT_DEFAULT, '=' }, |
237 | { NULL, 0, 0 }, |
238 | }; |
239 | |
240 | struct keywordTypes extlinuxKeywords[] = { |
241 | { "label", LT_TITLE, ' ' }, |
242 | { "root", LT_ROOT, ' ' }, |
243 | { "default", LT_DEFAULT, ' ' }, |
244 | { "kernel", LT_KERNEL, ' ' }, |
245 | { "initrd", LT_INITRD, ' ', ',' }, |
246 | { "append", LT_KERNELARGS, ' ' }, |
247 | { "prompt", LT_UNKNOWN, ' ' }, |
248 | { NULL, 0, 0 }, |
249 | }; |
250 | int useextlinuxmenu; |
251 | struct configFileInfo eliloConfigType = { |
252 | "/boot/efi/EFI/redhat/elilo.conf", /* defaultConfig */ |
253 | eliloKeywords, /* keywords */ |
254 | 0, /* defaultIsIndex */ |
255 | 0, /* defaultSupportSaved */ |
256 | LT_KERNEL, /* entrySeparator */ |
257 | 1, /* needsBootPrefix */ |
258 | 1, /* argsInQuotes */ |
259 | 0, /* maxTitleLength */ |
260 | 0, /* titleBracketed */ |
261 | 0, /* mbHyperFirst */ |
262 | 0, /* mbInitRdIsModule */ |
263 | 1, /* mbConcatArgs */ |
264 | 0, /* mbAllowExtraInitRds */ |
265 | }; |
266 | |
267 | struct configFileInfo liloConfigType = { |
268 | "/etc/lilo.conf", /* defaultConfig */ |
269 | liloKeywords, /* keywords */ |
270 | 0, /* defaultIsIndex */ |
271 | 0, /* defaultSupportSaved */ |
272 | LT_KERNEL, /* entrySeparator */ |
273 | 0, /* needsBootPrefix */ |
274 | 1, /* argsInQuotes */ |
275 | 15, /* maxTitleLength */ |
276 | 0, /* titleBracketed */ |
277 | 0, /* mbHyperFirst */ |
278 | 0, /* mbInitRdIsModule */ |
279 | 0, /* mbConcatArgs */ |
280 | 0, /* mbAllowExtraInitRds */ |
281 | }; |
282 | |
283 | struct configFileInfo yabootConfigType = { |
284 | "/etc/yaboot.conf", /* defaultConfig */ |
285 | yabootKeywords, /* keywords */ |
286 | 0, /* defaultIsIndex */ |
287 | 0, /* defaultSupportSaved */ |
288 | LT_KERNEL, /* entrySeparator */ |
289 | 1, /* needsBootPrefix */ |
290 | 1, /* argsInQuotes */ |
291 | 15, /* maxTitleLength */ |
292 | 0, /* titleBracketed */ |
293 | 0, /* mbHyperFirst */ |
294 | 0, /* mbInitRdIsModule */ |
295 | 0, /* mbConcatArgs */ |
296 | 1, /* mbAllowExtraInitRds */ |
297 | }; |
298 | |
299 | struct configFileInfo siloConfigType = { |
300 | "/etc/silo.conf", /* defaultConfig */ |
301 | siloKeywords, /* keywords */ |
302 | 0, /* defaultIsIndex */ |
303 | 0, /* defaultSupportSaved */ |
304 | LT_KERNEL, /* entrySeparator */ |
305 | 1, /* needsBootPrefix */ |
306 | 1, /* argsInQuotes */ |
307 | 15, /* maxTitleLength */ |
308 | 0, /* titleBracketed */ |
309 | 0, /* mbHyperFirst */ |
310 | 0, /* mbInitRdIsModule */ |
311 | 0, /* mbConcatArgs */ |
312 | 0, /* mbAllowExtraInitRds */ |
313 | }; |
314 | |
315 | struct configFileInfo ziplConfigType = { |
316 | "/etc/zipl.conf", /* defaultConfig */ |
317 | ziplKeywords, /* keywords */ |
318 | 0, /* defaultIsIndex */ |
319 | 0, /* defaultSupportSaved */ |
320 | LT_TITLE, /* entrySeparator */ |
321 | 0, /* needsBootPrefix */ |
322 | 1, /* argsInQuotes */ |
323 | 0, /* maxTitleLength */ |
324 | 1, /* titleBracketed */ |
325 | 0, /* mbHyperFirst */ |
326 | 0, /* mbInitRdIsModule */ |
327 | 0, /* mbConcatArgs */ |
328 | 0, /* mbAllowExtraInitRds */ |
329 | }; |
330 | |
331 | struct configFileInfo extlinuxConfigType = { |
332 | "/boot/extlinux/extlinux.conf", /* defaultConfig */ |
333 | extlinuxKeywords, /* keywords */ |
334 | 0, /* defaultIsIndex */ |
335 | 0, /* defaultSupportSaved */ |
336 | LT_TITLE, /* entrySeparator */ |
337 | 1, /* needsBootPrefix */ |
338 | 0, /* argsInQuotes */ |
339 | 255, /* maxTitleLength */ |
340 | 0, /* titleBracketed */ |
341 | 0, /* mbHyperFirst */ |
342 | 0, /* mbInitRdIsModule */ |
343 | 0, /* mbConcatArgs */ |
344 | 1, /* mbAllowExtraInitRds */ |
345 | }; |
346 | |
347 | struct grubConfig { |
348 | struct singleLine * theLines; |
349 | struct singleEntry * entries; |
350 | char * primaryIndent; |
351 | char * secondaryIndent; |
352 | int defaultImage; /* -1 if none specified -- this value is |
353 | * written out, overriding original */ |
354 | int fallbackImage; /* just like defaultImage */ |
355 | int flags; |
356 | struct configFileInfo * cfi; |
357 | }; |
358 | |
359 | blkid_cache blkid; |
360 | |
361 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); |
362 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, |
363 | const char * path, const char * prefix, |
364 | int * index); |
365 | static int readFile(int fd, char ** bufPtr); |
366 | static void lineInit(struct singleLine * line); |
367 | struct singleLine * lineDup(struct singleLine * line); |
368 | static void lineFree(struct singleLine * line); |
369 | static int lineWrite(FILE * out, struct singleLine * line, |
370 | struct configFileInfo * cfi); |
371 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
372 | struct configFileInfo * cfi); |
373 | static char * getRootSpecifier(char * str); |
374 | static void insertElement(struct singleLine * line, |
375 | const char * item, int insertHere, |
376 | struct configFileInfo * cfi); |
377 | static void removeElement(struct singleLine * line, int removeHere); |
378 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
379 | struct configFileInfo * cfi); |
380 | static enum lineType_e getTypeByKeyword(char * keyword, |
381 | struct configFileInfo * cfi); |
382 | static struct singleLine * getLineByType(enum lineType_e type, |
383 | struct singleLine * line); |
384 | static int checkForExtLinux(struct grubConfig * config); |
385 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
386 | struct singleLine * tmplLine, |
387 | struct singleLine * prevLine, |
388 | const char * val, |
389 | struct configFileInfo * cfi); |
390 | struct singleLine * addLine(struct singleEntry * entry, |
391 | struct configFileInfo * cfi, |
392 | enum lineType_e type, char * defaultIndent, |
393 | const char * val); |
394 | |
395 | static char * sdupprintf(const char *format, ...) |
396 | #ifdef __GNUC__ |
397 | __attribute__ ((format (printf, 1, 2))); |
398 | #else |
399 | ; |
400 | #endif |
401 | |
402 | static char * sdupprintf(const char *format, ...) { |
403 | char *buf = NULL; |
404 | char c; |
405 | va_list args; |
406 | size_t size = 0; |
407 | va_start(args, format); |
408 | |
409 | /* XXX requires C99 vsnprintf behavior */ |
410 | size = vsnprintf(&c, 1, format, args) + 1; |
411 | if (size == -1) { |
412 | printf("ERROR: vsnprintf behavior is not C99\n"); |
413 | abort(); |
414 | } |
415 | |
416 | va_end(args); |
417 | va_start(args, format); |
418 | |
419 | buf = malloc(size); |
420 | if (buf == NULL) |
421 | return NULL; |
422 | vsnprintf(buf, size, format, args); |
423 | va_end (args); |
424 | |
425 | return buf; |
426 | } |
427 | |
428 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
429 | struct configFileInfo * cfi) { |
430 | struct keywordTypes * kw; |
431 | for (kw = cfi->keywords; kw->key; kw++) { |
432 | if (kw->type == type) |
433 | return kw; |
434 | } |
435 | return NULL; |
436 | } |
437 | |
438 | static char * getpathbyspec(char *device) { |
439 | if (!blkid) |
440 | blkid_get_cache(&blkid, NULL); |
441 | |
442 | return blkid_get_devname(blkid, device, NULL); |
443 | } |
444 | |
445 | static char * getuuidbydev(char *device) { |
446 | if (!blkid) |
447 | blkid_get_cache(&blkid, NULL); |
448 | |
449 | return blkid_get_tag_value(blkid, "UUID", device); |
450 | } |
451 | |
452 | static enum lineType_e getTypeByKeyword(char * keyword, |
453 | struct configFileInfo * cfi) { |
454 | struct keywordTypes * kw; |
455 | for (kw = cfi->keywords; kw->key; kw++) { |
456 | if (!strcmp(keyword, kw->key)) |
457 | return kw->type; |
458 | } |
459 | return LT_UNKNOWN; |
460 | } |
461 | |
462 | static struct singleLine * getLineByType(enum lineType_e type, |
463 | struct singleLine * line) { |
464 | dbgPrintf("getLineByType(%d): ", type); |
465 | for (; line; line = line->next) { |
466 | dbgPrintf("%d:%s ", line->type, |
467 | line->numElements ? line->elements[0].item : "(empty)"); |
468 | if (line->type & type) break; |
469 | } |
470 | dbgPrintf(line ? "\n" : " (failed)\n"); |
471 | return line; |
472 | } |
473 | |
474 | static int isBracketedTitle(struct singleLine * line) { |
475 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
476 | int len = strlen(line->elements[0].item); |
477 | if (*(line->elements[0].item + len - 1) == ']') { |
478 | /* FIXME: this is a hack... */ |
479 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
480 | return 1; |
481 | } |
482 | } |
483 | } |
484 | return 0; |
485 | } |
486 | |
487 | static int isEntrySeparator(struct singleLine * line, |
488 | struct configFileInfo * cfi) { |
489 | return line->type == cfi->entrySeparator || line->type == LT_OTHER || |
490 | (cfi->titleBracketed && isBracketedTitle(line)); |
491 | } |
492 | |
493 | /* extract the title from within brackets (for zipl) */ |
494 | static char * extractTitle(struct singleLine * line) { |
495 | /* bracketed title... let's extract it (leaks a byte) */ |
496 | char * title; |
497 | title = strdup(line->elements[0].item); |
498 | title++; |
499 | *(title + strlen(title) - 1) = '\0'; |
500 | return title; |
501 | } |
502 | |
503 | static int readFile(int fd, char ** bufPtr) { |
504 | int alloced = 0, size = 0, i = 0; |
505 | char * buf = NULL; |
506 | |
507 | do { |
508 | size += i; |
509 | if ((size + 1024) > alloced) { |
510 | alloced += 4096; |
511 | buf = realloc(buf, alloced + 1); |
512 | } |
513 | } while ((i = read(fd, buf + size, 1024)) > 0); |
514 | |
515 | if (i < 0) { |
516 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); |
517 | free(buf); |
518 | return 1; |
519 | } |
520 | |
521 | buf = realloc(buf, size + 2); |
522 | if (size == 0) |
523 | buf[size++] = '\n'; |
524 | else |
525 | if (buf[size - 1] != '\n') |
526 | buf[size++] = '\n'; |
527 | buf[size] = '\0'; |
528 | |
529 | *bufPtr = buf; |
530 | |
531 | return 0; |
532 | } |
533 | |
534 | static void lineInit(struct singleLine * line) { |
535 | line->indent = NULL; |
536 | line->elements = NULL; |
537 | line->numElements = 0; |
538 | line->next = NULL; |
539 | } |
540 | |
541 | struct singleLine * lineDup(struct singleLine * line) { |
542 | int i; |
543 | struct singleLine * newLine = malloc(sizeof(*newLine)); |
544 | |
545 | newLine->indent = strdup(line->indent); |
546 | newLine->next = NULL; |
547 | newLine->type = line->type; |
548 | newLine->numElements = line->numElements; |
549 | newLine->elements = malloc(sizeof(*newLine->elements) * |
550 | newLine->numElements); |
551 | |
552 | for (i = 0; i < newLine->numElements; i++) { |
553 | newLine->elements[i].indent = strdup(line->elements[i].indent); |
554 | newLine->elements[i].item = strdup(line->elements[i].item); |
555 | } |
556 | |
557 | return newLine; |
558 | } |
559 | |
560 | static void lineFree(struct singleLine * line) { |
561 | int i; |
562 | |
563 | if (line->indent) free(line->indent); |
564 | |
565 | for (i = 0; i < line->numElements; i++) { |
566 | free(line->elements[i].item); |
567 | free(line->elements[i].indent); |
568 | } |
569 | |
570 | if (line->elements) free(line->elements); |
571 | lineInit(line); |
572 | } |
573 | |
574 | static int lineWrite(FILE * out, struct singleLine * line, |
575 | struct configFileInfo * cfi) { |
576 | int i; |
577 | |
578 | if (fprintf(out, "%s", line->indent) == -1) return -1; |
579 | |
580 | for (i = 0; i < line->numElements; i++) { |
581 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
582 | if (fputc('"', out) == EOF) return -1; |
583 | |
584 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; |
585 | if (i < line->numElements - 1) |
586 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; |
587 | } |
588 | |
589 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
590 | if (fputc('"', out) == EOF) return -1; |
591 | |
592 | if (fprintf(out, "\n") == -1) return -1; |
593 | |
594 | return 0; |
595 | } |
596 | |
597 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
598 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
599 | struct configFileInfo * cfi) { |
600 | char * end; |
601 | char * start = *bufPtr; |
602 | char * chptr; |
603 | int elementsAlloced = 0; |
604 | struct lineElement * element; |
605 | int first = 1; |
606 | |
607 | lineFree(line); |
608 | |
609 | end = strchr(start, '\n'); |
610 | *end = '\0'; |
611 | *bufPtr = end + 1; |
612 | |
613 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
614 | |
615 | line->indent = strndup(start, chptr - start); |
616 | start = chptr; |
617 | |
618 | while (start < end) { |
619 | /* we know !isspace(*start) */ |
620 | |
621 | if (elementsAlloced == line->numElements) { |
622 | elementsAlloced += 5; |
623 | line->elements = realloc(line->elements, |
624 | sizeof(*line->elements) * elementsAlloced); |
625 | } |
626 | |
627 | element = line->elements + line->numElements; |
628 | |
629 | chptr = start; |
630 | while (*chptr && !isspace(*chptr)) { |
631 | if (first && *chptr == '=') break; |
632 | chptr++; |
633 | } |
634 | element->item = strndup(start, chptr - start); |
635 | start = chptr; |
636 | |
637 | /* lilo actually accepts the pathological case of append = " foo " */ |
638 | if (*start == '=') |
639 | chptr = start + 1; |
640 | else |
641 | chptr = start; |
642 | |
643 | do { |
644 | for (; *chptr && isspace(*chptr); chptr++); |
645 | if (*chptr == '=') |
646 | chptr = chptr + 1; |
647 | } while (isspace(*chptr)); |
648 | |
649 | element->indent = strndup(start, chptr - start); |
650 | start = chptr; |
651 | |
652 | line->numElements++; |
653 | first = 0; |
654 | } |
655 | |
656 | if (!line->numElements) |
657 | line->type = LT_WHITESPACE; |
658 | else { |
659 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
660 | if (line->type == LT_UNKNOWN) { |
661 | /* zipl does [title] instead of something reasonable like all |
662 | * the other boot loaders. kind of ugly */ |
663 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
664 | line->type = LT_TITLE; |
665 | } |
666 | |
667 | /* this is awkward, but we need to be able to handle keywords |
668 | that begin with a # (specifically for #boot in grub.conf), |
669 | but still make comments lines with no elements (everything |
670 | stored in the indent */ |
671 | if (*line->elements[0].item == '#') { |
672 | char * fullLine; |
673 | int len; |
674 | int i; |
675 | |
676 | len = strlen(line->indent); |
677 | for (i = 0; i < line->numElements; i++) |
678 | len += strlen(line->elements[i].item) + |
679 | strlen(line->elements[i].indent); |
680 | |
681 | fullLine = malloc(len + 1); |
682 | strcpy(fullLine, line->indent); |
683 | free(line->indent); |
684 | line->indent = fullLine; |
685 | |
686 | for (i = 0; i < line->numElements; i++) { |
687 | strcat(fullLine, line->elements[i].item); |
688 | strcat(fullLine, line->elements[i].indent); |
689 | free(line->elements[i].item); |
690 | free(line->elements[i].indent); |
691 | } |
692 | |
693 | line->type = LT_WHITESPACE; |
694 | line->numElements = 0; |
695 | } |
696 | } else { |
697 | struct keywordTypes *kw; |
698 | |
699 | kw = getKeywordByType(line->type, cfi); |
700 | |
701 | /* space isn't the only separator, we need to split |
702 | * elements up more |
703 | */ |
704 | if (!isspace(kw->separatorChar)) { |
705 | int i; |
706 | char indent[2] = ""; |
707 | indent[0] = kw->separatorChar; |
708 | for (i = 1; i < line->numElements; i++) { |
709 | char *p; |
710 | int j; |
711 | int numNewElements; |
712 | |
713 | numNewElements = 0; |
714 | p = line->elements[i].item; |
715 | while (*p != '\0') { |
716 | if (*p == kw->separatorChar) |
717 | numNewElements++; |
718 | p++; |
719 | } |
720 | if (line->numElements + numNewElements >= elementsAlloced) { |
721 | elementsAlloced += numNewElements + 5; |
722 | line->elements = realloc(line->elements, |
723 | sizeof(*line->elements) * elementsAlloced); |
724 | } |
725 | |
726 | for (j = line->numElements; j > i; j--) { |
727 | line->elements[j + numNewElements] = line->elements[j]; |
728 | } |
729 | line->numElements += numNewElements; |
730 | |
731 | p = line->elements[i].item; |
732 | while (*p != '\0') { |
733 | |
734 | while (*p != kw->separatorChar && *p != '\0') p++; |
735 | if (*p == '\0') { |
736 | break; |
737 | } |
738 | |
739 | free(line->elements[i].indent); |
740 | line->elements[i].indent = strdup(indent); |
741 | *p++ = '\0'; |
742 | i++; |
743 | line->elements[i].item = strdup(p); |
744 | line->elements[i].indent = strdup(""); |
745 | p = line->elements[i].item; |
746 | } |
747 | } |
748 | } |
749 | } |
750 | } |
751 | |
752 | return 0; |
753 | } |
754 | |
755 | static struct grubConfig * readConfig(const char * inName, |
756 | struct configFileInfo * cfi) { |
757 | int in; |
758 | char * incoming = NULL, * head; |
759 | int rc; |
760 | int sawEntry = 0; |
761 | int movedLine = 0; |
762 | struct grubConfig * cfg; |
763 | struct singleLine * last = NULL, * line, * defaultLine = NULL; |
764 | char * end; |
765 | struct singleEntry * entry = NULL; |
766 | int i, len; |
767 | char * buf; |
768 | |
769 | if (!strcmp(inName, "-")) { |
770 | in = 0; |
771 | } else { |
772 | if ((in = open(inName, O_RDONLY)) < 0) { |
773 | fprintf(stderr, _("error opening %s for read: %s\n"), |
774 | inName, strerror(errno)); |
775 | return NULL; |
776 | } |
777 | } |
778 | |
779 | rc = readFile(in, &incoming); |
780 | close(in); |
781 | if (rc) return NULL; |
782 | |
783 | head = incoming; |
784 | cfg = malloc(sizeof(*cfg)); |
785 | cfg->primaryIndent = strdup(""); |
786 | cfg->secondaryIndent = strdup("\t"); |
787 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
788 | cfg->cfi = cfi; |
789 | cfg->theLines = NULL; |
790 | cfg->entries = NULL; |
791 | cfg->fallbackImage = 0; |
792 | |
793 | /* copy everything we have */ |
794 | while (*head) { |
795 | line = malloc(sizeof(*line)); |
796 | lineInit(line); |
797 | |
798 | if (getNextLine(&head, line, cfi)) { |
799 | free(line); |
800 | /* XXX memory leak of everything in cfg */ |
801 | return NULL; |
802 | } |
803 | |
804 | if (!sawEntry && line->numElements) { |
805 | free(cfg->primaryIndent); |
806 | cfg->primaryIndent = strdup(line->indent); |
807 | } else if (line->numElements) { |
808 | free(cfg->secondaryIndent); |
809 | cfg->secondaryIndent = strdup(line->indent); |
810 | } |
811 | |
812 | if (isEntrySeparator(line, cfi)) { |
813 | sawEntry = 1; |
814 | if (!entry) { |
815 | cfg->entries = malloc(sizeof(*entry)); |
816 | entry = cfg->entries; |
817 | } else { |
818 | entry->next = malloc(sizeof(*entry)); |
819 | entry = entry->next; |
820 | } |
821 | |
822 | entry->skip = 0; |
823 | entry->multiboot = 0; |
824 | entry->lines = NULL; |
825 | entry->next = NULL; |
826 | } |
827 | |
828 | if (line->type == LT_DEFAULT && line->numElements == 2) { |
829 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
830 | defaultLine = line; |
831 | |
832 | } else if (line->type == LT_KERNEL) { |
833 | /* if by some freak chance this is multiboot and the "module" |
834 | * lines came earlier in the template, make sure to use LT_HYPER |
835 | * instead of LT_KERNEL now |
836 | */ |
837 | if (entry->multiboot) |
838 | line->type = LT_HYPER; |
839 | |
840 | } else if (line->type == LT_MBMODULE) { |
841 | /* go back and fix the LT_KERNEL line to indicate LT_HYPER |
842 | * instead, now that we know this is a multiboot entry. |
843 | * This only applies to grub, but that's the only place we |
844 | * should find LT_MBMODULE lines anyway. |
845 | */ |
846 | struct singleLine * l; |
847 | for (l = entry->lines; l; l = l->next) { |
848 | if (l->type == LT_HYPER) |
849 | break; |
850 | else if (l->type == LT_KERNEL) { |
851 | l->type = LT_HYPER; |
852 | break; |
853 | } |
854 | } |
855 | entry->multiboot = 1; |
856 | |
857 | } else if (line->type == LT_HYPER) { |
858 | entry->multiboot = 1; |
859 | |
860 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
861 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); |
862 | if (*end) cfg->fallbackImage = -1; |
863 | |
864 | } else if (line->type == LT_TITLE && line->numElements > 1) { |
865 | /* make the title a single argument (undoing our parsing) */ |
866 | len = 0; |
867 | for (i = 1; i < line->numElements; i++) { |
868 | len += strlen(line->elements[i].item); |
869 | len += strlen(line->elements[i].indent); |
870 | } |
871 | buf = malloc(len + 1); |
872 | *buf = '\0'; |
873 | |
874 | for (i = 1; i < line->numElements; i++) { |
875 | strcat(buf, line->elements[i].item); |
876 | free(line->elements[i].item); |
877 | |
878 | if ((i + 1) != line->numElements) { |
879 | strcat(buf, line->elements[i].indent); |
880 | free(line->elements[i].indent); |
881 | } |
882 | } |
883 | |
884 | line->elements[1].indent = |
885 | line->elements[line->numElements - 1].indent; |
886 | line->elements[1].item = buf; |
887 | line->numElements = 2; |
888 | |
889 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
890 | /* Strip off any " which may be present; they'll be put back |
891 | on write. This is one of the few (the only?) places that grubby |
892 | canonicalizes the output */ |
893 | |
894 | if (line->numElements >= 2) { |
895 | int last, len; |
896 | |
897 | if (*line->elements[1].item == '"') |
898 | memmove(line->elements[1].item, line->elements[1].item + 1, |
899 | strlen(line->elements[1].item + 1) + 1); |
900 | |
901 | last = line->numElements - 1; |
902 | len = strlen(line->elements[last].item) - 1; |
903 | if (line->elements[last].item[len] == '"') |
904 | line->elements[last].item[len] = '\0'; |
905 | } |
906 | } |
907 | |
908 | /* If we find a generic config option which should live at the |
909 | top of the file, move it there. Old versions of grubby were |
910 | probably responsible for putting new images in the wrong |
911 | place in front of it anyway. */ |
912 | if (sawEntry && line->type == LT_GENERIC) { |
913 | struct singleLine **l = &cfg->theLines; |
914 | struct singleLine **last_nonws = &cfg->theLines; |
915 | while (*l) { |
916 | if ((*l)->type != LT_WHITESPACE) |
917 | last_nonws = &((*l)->next); |
918 | l = &((*l)->next); |
919 | } |
920 | line->next = *last_nonws; |
921 | *last_nonws = line; |
922 | movedLine = 1; |
923 | continue; /* without setting 'last' */ |
924 | } |
925 | |
926 | /* If a second line of whitespace happens after a generic option |
927 | which was moved, drop it. */ |
928 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { |
929 | lineFree(line); |
930 | free(line); |
931 | movedLine = 0; |
932 | continue; |
933 | } |
934 | movedLine = 0; |
935 | |
936 | if (sawEntry) { |
937 | if (!entry->lines) |
938 | entry->lines = line; |
939 | else |
940 | last->next = line; |
941 | dbgPrintf("readConfig added %d to %p\n", line->type, entry); |
942 | } else { |
943 | if (!cfg->theLines) |
944 | cfg->theLines = line; |
945 | else |
946 | last->next = line; |
947 | dbgPrintf("readConfig added %d to cfg\n", line->type); |
948 | } |
949 | |
950 | last = line; |
951 | } |
952 | |
953 | free(incoming); |
954 | |
955 | if (defaultLine) { |
956 | if (cfi->defaultSupportSaved && |
957 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { |
958 | cfg->defaultImage = DEFAULT_SAVED; |
959 | } else if (cfi->defaultIsIndex) { |
960 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); |
961 | if (*end) cfg->defaultImage = -1; |
962 | } else if (defaultLine->numElements >= 2) { |
963 | i = 0; |
964 | while ((entry = findEntryByIndex(cfg, i))) { |
965 | for (line = entry->lines; line; line = line->next) |
966 | if (line->type == LT_TITLE) break; |
967 | |
968 | if (!cfi->titleBracketed) { |
969 | if (line && (line->numElements >= 2) && |
970 | !strcmp(defaultLine->elements[1].item, |
971 | line->elements[1].item)) break; |
972 | } else if (line) { |
973 | if (!strcmp(defaultLine->elements[1].item, |
974 | extractTitle(line))) break; |
975 | } |
976 | i++; |
977 | entry = NULL; |
978 | } |
979 | |
980 | if (entry){ |
981 | cfg->defaultImage = i; |
982 | }else{ |
983 | cfg->defaultImage = -1; |
984 | } |
985 | } |
986 | } else { |
987 | cfg->defaultImage = 0; |
988 | } |
989 | |
990 | return cfg; |
991 | } |
992 | |
993 | static void writeDefault(FILE * out, char * indent, |
994 | char * separator, struct grubConfig * cfg) { |
995 | struct singleEntry * entry; |
996 | struct singleLine * line; |
997 | int i; |
998 | |
999 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; |
1000 | |
1001 | if (cfg->defaultImage == DEFAULT_SAVED) |
1002 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
1003 | else if (cfg->defaultImage > -1) { |
1004 | if (cfg->cfi->defaultIsIndex) { |
1005 | fprintf(out, "%sdefault%s%d\n", indent, separator, |
1006 | cfg->defaultImage); |
1007 | } else { |
1008 | int image = cfg->defaultImage; |
1009 | |
1010 | entry = cfg->entries; |
1011 | while (entry && entry->skip) entry = entry->next; |
1012 | |
1013 | i = 0; |
1014 | while (entry && i < image) { |
1015 | entry = entry->next; |
1016 | |
1017 | while (entry && entry->skip) entry = entry->next; |
1018 | i++; |
1019 | } |
1020 | |
1021 | if (!entry) return; |
1022 | |
1023 | line = getLineByType(LT_TITLE, entry->lines); |
1024 | |
1025 | if (line && line->numElements >= 2) |
1026 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1027 | line->elements[1].item); |
1028 | else if (line && (line->numElements == 1) && |
1029 | cfg->cfi->titleBracketed) { |
1030 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1031 | extractTitle(line)); |
1032 | } |
1033 | } |
1034 | } |
1035 | } |
1036 | |
1037 | static int writeConfig(struct grubConfig * cfg, char * outName, |
1038 | const char * prefix) { |
1039 | FILE * out; |
1040 | struct singleLine * line; |
1041 | struct singleEntry * entry; |
1042 | char * tmpOutName; |
1043 | int needs = MAIN_DEFAULT; |
1044 | struct stat sb; |
1045 | int i; |
1046 | |
1047 | if (!strcmp(outName, "-")) { |
1048 | out = stdout; |
1049 | tmpOutName = NULL; |
1050 | } else { |
1051 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
1052 | char * buf; |
1053 | int len = 256; |
1054 | int rc; |
1055 | |
1056 | /* most likely the symlink is relative, so change our |
1057 | directory to the dir of the symlink */ |
1058 | rc = chdir(dirname(strdupa(outName))); |
1059 | do { |
1060 | buf = alloca(len + 1); |
1061 | rc = readlink(basename(outName), buf, len); |
1062 | if (rc == len) len += 256; |
1063 | } while (rc == len); |
1064 | |
1065 | if (rc < 0) { |
1066 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), |
1067 | outName, strerror(errno)); |
1068 | return 1; |
1069 | } |
1070 | |
1071 | outName = buf; |
1072 | outName[rc] = '\0'; |
1073 | } |
1074 | |
1075 | tmpOutName = alloca(strlen(outName) + 2); |
1076 | sprintf(tmpOutName, "%s-", outName); |
1077 | out = fopen(tmpOutName, "w"); |
1078 | if (!out) { |
1079 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, |
1080 | strerror(errno)); |
1081 | return 1; |
1082 | } |
1083 | |
1084 | if (!stat(outName, &sb)) { |
1085 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
1086 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), |
1087 | tmpOutName, strerror(errno)); |
1088 | fclose(out); |
1089 | unlink(tmpOutName); |
1090 | return 1; |
1091 | } |
1092 | } |
1093 | } |
1094 | |
1095 | line = cfg->theLines; |
1096 | while (line) { |
1097 | if (line->type == LT_DEFAULT) { |
1098 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1099 | needs &= ~MAIN_DEFAULT; |
1100 | } else if (line->type == LT_FALLBACK) { |
1101 | if (cfg->fallbackImage > -1) |
1102 | fprintf(out, "%s%s%s%d\n", line->indent, |
1103 | line->elements[0].item, line->elements[0].indent, |
1104 | cfg->fallbackImage); |
1105 | } else { |
1106 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1107 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1108 | tmpOutName, strerror(errno)); |
1109 | fclose(out); |
1110 | unlink(tmpOutName); |
1111 | return 1; |
1112 | } |
1113 | } |
1114 | |
1115 | line = line->next; |
1116 | } |
1117 | |
1118 | if (needs & MAIN_DEFAULT) { |
1119 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
1120 | needs &= ~MAIN_DEFAULT; |
1121 | } |
1122 | |
1123 | i = 0; |
1124 | while ((entry = findEntryByIndex(cfg, i++))) { |
1125 | if (entry->skip) continue; |
1126 | |
1127 | line = entry->lines; |
1128 | while (line) { |
1129 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1130 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1131 | tmpOutName, strerror(errno)); |
1132 | fclose(out); |
1133 | unlink(tmpOutName); |
1134 | return 1; |
1135 | } |
1136 | line = line->next; |
1137 | } |
1138 | } |
1139 | |
1140 | if (tmpOutName) { |
1141 | if (rename(tmpOutName, outName)) { |
1142 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), |
1143 | tmpOutName, outName, strerror(errno)); |
1144 | unlink(outName); |
1145 | return 1; |
1146 | } |
1147 | } |
1148 | |
1149 | return 0; |
1150 | } |
1151 | |
1152 | static int numEntries(struct grubConfig *cfg) { |
1153 | int i = 0; |
1154 | struct singleEntry * entry; |
1155 | |
1156 | entry = cfg->entries; |
1157 | while (entry) { |
1158 | if (!entry->skip) |
1159 | i++; |
1160 | entry = entry->next; |
1161 | } |
1162 | return i; |
1163 | } |
1164 | |
1165 | static char *findDiskForRoot() |
1166 | { |
1167 | int fd; |
1168 | char buf[65536]; |
1169 | char *devname; |
1170 | char *chptr; |
1171 | int rc; |
1172 | |
1173 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { |
1174 | fprintf(stderr, "grubby: failed to open %s: %s\n", |
1175 | _PATH_MOUNTED, strerror(errno)); |
1176 | return NULL; |
1177 | } |
1178 | |
1179 | rc = read(fd, buf, sizeof(buf) - 1); |
1180 | if (rc <= 0) { |
1181 | fprintf(stderr, "grubby: failed to read %s: %s\n", |
1182 | _PATH_MOUNTED, strerror(errno)); |
1183 | close(fd); |
1184 | return NULL; |
1185 | } |
1186 | close(fd); |
1187 | buf[rc] = '\0'; |
1188 | chptr = buf; |
1189 | |
1190 | while (chptr && chptr != buf+rc) { |
1191 | devname = chptr; |
1192 | |
1193 | /* |
1194 | * The first column of a mtab entry is the device, but if the entry is a |
1195 | * special device it won't start with /, so move on to the next line. |
1196 | */ |
1197 | if (*devname != '/') { |
1198 | chptr = strchr(chptr, '\n'); |
1199 | if (chptr) |
1200 | chptr++; |
1201 | continue; |
1202 | } |
1203 | |
1204 | /* Seek to the next space */ |
1205 | chptr = strchr(chptr, ' '); |
1206 | if (!chptr) { |
1207 | fprintf(stderr, "grubby: error parsing %s: %s\n", |
1208 | _PATH_MOUNTED, strerror(errno)); |
1209 | return NULL; |
1210 | } |
1211 | |
1212 | /* |
1213 | * The second column of a mtab entry is the mount point, we are looking |
1214 | * for '/' obviously. |
1215 | */ |
1216 | if (*(++chptr) == '/' && *(++chptr) == ' ') { |
1217 | /* |
1218 | * Move back 2, which is the first space after the device name, set |
1219 | * it to \0 so strdup will just get the devicename. |
1220 | */ |
1221 | chptr -= 2; |
1222 | *chptr = '\0'; |
1223 | return strdup(devname); |
1224 | } |
1225 | |
1226 | /* Next line */ |
1227 | chptr = strchr(chptr, '\n'); |
1228 | if (chptr) |
1229 | chptr++; |
1230 | } |
1231 | |
1232 | return NULL; |
1233 | } |
1234 | |
1235 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, |
1236 | int skipRemoved, int flags) { |
1237 | struct singleLine * line; |
1238 | char * fullName; |
1239 | int i; |
1240 | char * dev; |
1241 | char * rootspec; |
1242 | char * rootdev; |
1243 | |
1244 | if (skipRemoved && entry->skip) return 0; |
1245 | |
1246 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1247 | if (!line || line->numElements < 2) return 0; |
1248 | |
1249 | if (flags & GRUBBY_BADIMAGE_OKAY) return 1; |
1250 | |
1251 | fullName = alloca(strlen(bootPrefix) + |
1252 | strlen(line->elements[1].item) + 1); |
1253 | rootspec = getRootSpecifier(line->elements[1].item); |
1254 | sprintf(fullName, "%s%s", bootPrefix, |
1255 | line->elements[1].item + (rootspec ? strlen(rootspec) : 0)); |
1256 | if (access(fullName, R_OK)) return 0; |
1257 | |
1258 | for (i = 2; i < line->numElements; i++) |
1259 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1260 | if (i < line->numElements) { |
1261 | dev = line->elements[i].item + 5; |
1262 | } else { |
1263 | /* look for a lilo style LT_ROOT line */ |
1264 | line = getLineByType(LT_ROOT, entry->lines); |
1265 | |
1266 | if (line && line->numElements >= 2) { |
1267 | dev = line->elements[1].item; |
1268 | } else { |
1269 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS. |
1270 | * grub+multiboot uses LT_MBMODULE for the args, so check that too. |
1271 | */ |
1272 | line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines); |
1273 | |
1274 | /* failed to find one */ |
1275 | if (!line) return 0; |
1276 | |
1277 | for (i = 1; i < line->numElements; i++) |
1278 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1279 | if (i < line->numElements) |
1280 | dev = line->elements[i].item + 5; |
1281 | else { |
1282 | /* it failed too... can't find root= */ |
1283 | return 0; |
1284 | } |
1285 | } |
1286 | } |
1287 | |
1288 | dev = getpathbyspec(dev); |
1289 | if (!dev) |
1290 | return 0; |
1291 | |
1292 | rootdev = findDiskForRoot(); |
1293 | if (!rootdev) |
1294 | return 0; |
1295 | |
1296 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
1297 | free(rootdev); |
1298 | return 0; |
1299 | } |
1300 | |
1301 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
1302 | free(rootdev); |
1303 | return 0; |
1304 | } |
1305 | |
1306 | free(rootdev); |
1307 | |
1308 | return 1; |
1309 | } |
1310 | |
1311 | /* returns the first match on or after the one pointed to by index (if index |
1312 | is not NULL) which is not marked as skip */ |
1313 | struct singleEntry * findEntryByPath(struct grubConfig * config, |
1314 | const char * kernel, const char * prefix, |
1315 | int * index) { |
1316 | struct singleEntry * entry = NULL; |
1317 | struct singleLine * line; |
1318 | int i; |
1319 | char * chptr; |
1320 | char * rootspec = NULL; |
1321 | enum lineType_e checkType = LT_KERNEL; |
1322 | |
1323 | if (isdigit(*kernel)) { |
1324 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
1325 | |
1326 | i = 0; |
1327 | indexVars[i] = strtol(kernel, &chptr, 10); |
1328 | while (*chptr == ',') { |
1329 | i++; |
1330 | kernel = chptr + 1; |
1331 | indexVars[i] = strtol(kernel, &chptr, 10); |
1332 | } |
1333 | |
1334 | if (*chptr) { |
1335 | /* can't parse it, bail */ |
1336 | return NULL; |
1337 | } |
1338 | |
1339 | indexVars[i + 1] = -1; |
1340 | |
1341 | i = 0; |
1342 | if (index) { |
1343 | while (i < *index) i++; |
1344 | if (indexVars[i] == -1) return NULL; |
1345 | } |
1346 | |
1347 | entry = findEntryByIndex(config, indexVars[i]); |
1348 | if (!entry) return NULL; |
1349 | |
1350 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1351 | if (!line) return NULL; |
1352 | |
1353 | if (index) *index = indexVars[i]; |
1354 | return entry; |
1355 | } |
1356 | |
1357 | if (!strcmp(kernel, "DEFAULT")) { |
1358 | if (index && *index > config->defaultImage) { |
1359 | entry = NULL; |
1360 | } else { |
1361 | entry = findEntryByIndex(config, config->defaultImage); |
1362 | if (entry && entry->skip) |
1363 | entry = NULL; |
1364 | else if (index) |
1365 | *index = config->defaultImage; |
1366 | } |
1367 | } else if (!strcmp(kernel, "ALL")) { |
1368 | if (index) |
1369 | i = *index; |
1370 | else |
1371 | i = 0; |
1372 | |
1373 | while ((entry = findEntryByIndex(config, i))) { |
1374 | if (!entry->skip) break; |
1375 | i++; |
1376 | } |
1377 | |
1378 | if (entry && index) |
1379 | *index = i; |
1380 | } else { |
1381 | if (index) |
1382 | i = *index; |
1383 | else |
1384 | i = 0; |
1385 | |
1386 | if (!strncmp(kernel, "TITLE=", 6)) { |
1387 | prefix = ""; |
1388 | checkType = LT_TITLE; |
1389 | kernel += 6; |
1390 | } |
1391 | |
1392 | for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) { |
1393 | if (entry->skip) continue; |
1394 | |
1395 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry); |
1396 | |
1397 | /* check all the lines matching checkType */ |
1398 | for (line = entry->lines; line; line = line->next) { |
1399 | line = getLineByType(entry->multiboot && checkType == LT_KERNEL ? |
1400 | LT_KERNEL|LT_MBMODULE|LT_HYPER : |
1401 | checkType, line); |
1402 | if (!line) break; /* not found in this entry */ |
1403 | |
1404 | if (line && line->numElements >= 2) { |
1405 | rootspec = getRootSpecifier(line->elements[1].item); |
1406 | if (!strcmp(line->elements[1].item + |
1407 | ((rootspec != NULL) ? strlen(rootspec) : 0), |
1408 | kernel + strlen(prefix))) |
1409 | break; |
1410 | } |
1411 | } |
1412 | |
1413 | /* make sure this entry has a kernel identifier; this skips |
1414 | * non-Linux boot entries (could find netbsd etc, though, which is |
1415 | * unfortunate) |
1416 | */ |
1417 | if (line && getLineByType(LT_KERNEL|LT_HYPER, entry->lines)) |
1418 | break; /* found 'im! */ |
1419 | } |
1420 | |
1421 | if (index) *index = i; |
1422 | } |
1423 | |
1424 | return entry; |
1425 | } |
1426 | |
1427 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { |
1428 | struct singleEntry * entry; |
1429 | |
1430 | entry = cfg->entries; |
1431 | while (index && entry) { |
1432 | entry = entry->next; |
1433 | index--; |
1434 | } |
1435 | |
1436 | return entry; |
1437 | } |
1438 | |
1439 | /* Find a good template to use for the new kernel. An entry is |
1440 | * good if the kernel and mkinitrd exist (even if the entry |
1441 | * is going to be removed). Try and use the default entry, but |
1442 | * if that doesn't work just take the first. If we can't find one, |
1443 | * bail. */ |
1444 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, |
1445 | int * indexPtr, int skipRemoved, int flags) { |
1446 | struct singleEntry * entry, * entry2; |
1447 | int index; |
1448 | |
1449 | if (cfg->defaultImage > -1) { |
1450 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
1451 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
1452 | if (indexPtr) *indexPtr = cfg->defaultImage; |
1453 | return entry; |
1454 | } |
1455 | } |
1456 | |
1457 | index = 0; |
1458 | while ((entry = findEntryByIndex(cfg, index))) { |
1459 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
1460 | int j; |
1461 | for (j = 0; j < index; j++) { |
1462 | entry2 = findEntryByIndex(cfg, j); |
1463 | if (entry2->skip) index--; |
1464 | } |
1465 | if (indexPtr) *indexPtr = index; |
1466 | |
1467 | return entry; |
1468 | } |
1469 | |
1470 | index++; |
1471 | } |
1472 | |
1473 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); |
1474 | |
1475 | return NULL; |
1476 | } |
1477 | |
1478 | char * findBootPrefix(void) { |
1479 | struct stat sb, sb2; |
1480 | |
1481 | stat("/", &sb); |
1482 | #ifdef __ia64__ |
1483 | stat("/boot/efi/EFI/redhat/", &sb2); |
1484 | #else |
1485 | stat("/boot", &sb2); |
1486 | #endif |
1487 | |
1488 | if (sb.st_dev == sb2.st_dev) |
1489 | return strdup(""); |
1490 | |
1491 | #ifdef __ia64__ |
1492 | return strdup("/boot/efi/EFI/redhat/"); |
1493 | #else |
1494 | return strdup("/boot"); |
1495 | #endif |
1496 | } |
1497 | |
1498 | void markRemovedImage(struct grubConfig * cfg, const char * image, |
1499 | const char * prefix) { |
1500 | struct singleEntry * entry; |
1501 | |
1502 | if (!image) return; |
1503 | |
1504 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
1505 | entry->skip = 1; |
1506 | } |
1507 | |
1508 | void setDefaultImage(struct grubConfig * config, int hasNew, |
1509 | const char * defaultKernelPath, int newIsDefault, |
1510 | const char * prefix, int flags) { |
1511 | struct singleEntry * entry, * entry2, * newDefault; |
1512 | int i, j; |
1513 | |
1514 | if (newIsDefault) { |
1515 | config->defaultImage = 0; |
1516 | return; |
1517 | } else if (defaultKernelPath) { |
1518 | i = 0; |
1519 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { |
1520 | config->defaultImage = i; |
1521 | } else { |
1522 | config->defaultImage = -1; |
1523 | return; |
1524 | } |
1525 | } |
1526 | |
1527 | /* defaultImage now points to what we'd like to use, but before any order |
1528 | changes */ |
1529 | if (config->defaultImage == DEFAULT_SAVED) |
1530 | /* default is set to saved, we don't want to change it */ |
1531 | return; |
1532 | |
1533 | if (config->defaultImage > -1) |
1534 | entry = findEntryByIndex(config, config->defaultImage); |
1535 | else |
1536 | entry = NULL; |
1537 | |
1538 | if (entry && !entry->skip) { |
1539 | /* we can preserve the default */ |
1540 | if (hasNew) |
1541 | config->defaultImage++; |
1542 | |
1543 | /* count the number of entries erased before this one */ |
1544 | for (j = 0; j < config->defaultImage; j++) { |
1545 | entry2 = findEntryByIndex(config, j); |
1546 | if (entry2->skip) config->defaultImage--; |
1547 | } |
1548 | } else if (hasNew) { |
1549 | config->defaultImage = 0; |
1550 | } else { |
1551 | /* Either we just erased the default (or the default line was bad |
1552 | * to begin with) and didn't put a new one in. We'll use the first |
1553 | * valid image. */ |
1554 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, |
1555 | flags); |
1556 | if (!newDefault) |
1557 | config->defaultImage = -1; |
1558 | } |
1559 | } |
1560 | |
1561 | void setFallbackImage(struct grubConfig * config, int hasNew) { |
1562 | struct singleEntry * entry, * entry2; |
1563 | int j; |
1564 | |
1565 | if (config->fallbackImage == -1) return; |
1566 | |
1567 | entry = findEntryByIndex(config, config->fallbackImage); |
1568 | if (!entry || entry->skip) { |
1569 | config->fallbackImage = -1; |
1570 | return; |
1571 | } |
1572 | |
1573 | if (hasNew) |
1574 | config->fallbackImage++; |
1575 | |
1576 | /* count the number of entries erased before this one */ |
1577 | for (j = 0; j < config->fallbackImage; j++) { |
1578 | entry2 = findEntryByIndex(config, j); |
1579 | if (entry2->skip) config->fallbackImage--; |
1580 | } |
1581 | } |
1582 | |
1583 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { |
1584 | struct singleLine * line; |
1585 | char * root = NULL; |
1586 | int i; |
1587 | |
1588 | printf("index=%d\n", index); |
1589 | |
1590 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1591 | if (!line) { |
1592 | printf("non linux entry\n"); |
1593 | return; |
1594 | } |
1595 | |
1596 | printf("kernel=%s\n", line->elements[1].item); |
1597 | |
1598 | if (line->numElements >= 3) { |
1599 | printf("args=\""); |
1600 | i = 2; |
1601 | while (i < line->numElements) { |
1602 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
1603 | root = line->elements[i].item + 5; |
1604 | } else { |
1605 | printf("%s%s", line->elements[i].item, |
1606 | line->elements[i].indent); |
1607 | } |
1608 | |
1609 | i++; |
1610 | } |
1611 | printf("\"\n"); |
1612 | } else { |
1613 | line = getLineByType(LT_KERNELARGS, entry->lines); |
1614 | if (line) { |
1615 | char * s; |
1616 | |
1617 | printf("args=\""); |
1618 | i = 1; |
1619 | while (i < line->numElements) { |
1620 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
1621 | root = line->elements[i].item + 5; |
1622 | } else { |
1623 | s = line->elements[i].item; |
1624 | |
1625 | printf("%s%s", s, line->elements[i].indent); |
1626 | } |
1627 | |
1628 | i++; |
1629 | } |
1630 | |
1631 | s = line->elements[i - 1].indent; |
1632 | printf("\"\n"); |
1633 | } |
1634 | } |
1635 | |
1636 | if (!root) { |
1637 | line = getLineByType(LT_ROOT, entry->lines); |
1638 | if (line && line->numElements >= 2) |
1639 | root=line->elements[1].item; |
1640 | } |
1641 | |
1642 | if (root) { |
1643 | char * s = alloca(strlen(root) + 1); |
1644 | |
1645 | strcpy(s, root); |
1646 | if (s[strlen(s) - 1] == '"') |
1647 | s[strlen(s) - 1] = '\0'; |
1648 | /* make sure the root doesn't have a trailing " */ |
1649 | printf("root=%s\n", s); |
1650 | } |
1651 | |
1652 | line = getLineByType(LT_INITRD, entry->lines); |
1653 | |
1654 | if (line && line->numElements >= 2) { |
1655 | printf("initrd=%s", prefix); |
1656 | for (i = 1; i < line->numElements; i++) |
1657 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
1658 | printf("\n"); |
1659 | } |
1660 | } |
1661 | |
1662 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { |
1663 | FILE * in; |
1664 | char buf[1024]; |
1665 | char * chptr; |
1666 | char * start; |
1667 | char * param; |
1668 | |
1669 | in = fopen("/etc/conf.d/grub", "r"); |
1670 | if (!in) return 1; |
1671 | |
1672 | if (lbaPtr) *lbaPtr = 0; |
1673 | if (bootPtr) *bootPtr = NULL; |
1674 | |
1675 | while (fgets(buf, sizeof(buf), in)) { |
1676 | start = buf; |
1677 | while (isspace(*start)) start++; |
1678 | if (*start == '#') continue; |
1679 | |
1680 | chptr = strchr(start, '='); |
1681 | if (!chptr) continue; |
1682 | chptr--; |
1683 | while (*chptr && isspace(*chptr)) chptr--; |
1684 | chptr++; |
1685 | *chptr = '\0'; |
1686 | |
1687 | param = chptr + 1; |
1688 | while (*param && isspace(*param)) param++; |
1689 | if (*param == '=') { |
1690 | param++; |
1691 | while (*param && isspace(*param)) param++; |
1692 | } |
1693 | |
1694 | chptr = param; |
1695 | while (*chptr && !isspace(*chptr)) chptr++; |
1696 | *chptr = '\0'; |
1697 | |
1698 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
1699 | *lbaPtr = 1; |
1700 | else if (!strcmp(start, "boot") && bootPtr) |
1701 | *bootPtr = strdup(param); |
1702 | } |
1703 | |
1704 | fclose(in); |
1705 | |
1706 | return 0; |
1707 | } |
1708 | |
1709 | void dumpSysconfigGrub(void) { |
1710 | char * boot; |
1711 | int lba; |
1712 | |
1713 | if (!parseSysconfigGrub(&lba, &boot)) { |
1714 | if (lba) printf("lba\n"); |
1715 | if (boot) printf("boot=%s\n", boot); |
1716 | } |
1717 | } |
1718 | |
1719 | int displayInfo(struct grubConfig * config, char * kernel, |
1720 | const char * prefix) { |
1721 | int i = 0; |
1722 | struct singleEntry * entry; |
1723 | struct singleLine * line; |
1724 | |
1725 | entry = findEntryByPath(config, kernel, prefix, &i); |
1726 | if (!entry) { |
1727 | fprintf(stderr, _("grubby: kernel not found\n")); |
1728 | return 1; |
1729 | } |
1730 | |
1731 | /* this is a horrible hack to support /etc/conf.d/grub; there must |
1732 | be a better way */ |
1733 | if (config->cfi == &grubConfigType) { |
1734 | dumpSysconfigGrub(); |
1735 | } else { |
1736 | line = getLineByType(LT_BOOT, config->theLines); |
1737 | if (line && line->numElements >= 1) { |
1738 | printf("boot=%s\n", line->elements[1].item); |
1739 | } |
1740 | |
1741 | line = getLineByType(LT_LBA, config->theLines); |
1742 | if (line) printf("lba\n"); |
1743 | } |
1744 | |
1745 | displayEntry(entry, prefix, i); |
1746 | |
1747 | i++; |
1748 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
1749 | displayEntry(entry, prefix, i); |
1750 | i++; |
1751 | } |
1752 | |
1753 | return 0; |
1754 | } |
1755 | |
1756 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
1757 | struct singleLine * tmplLine, |
1758 | struct singleLine * prevLine, |
1759 | const char * val, |
1760 | struct configFileInfo * cfi) |
1761 | { |
1762 | struct singleLine * newLine = lineDup(tmplLine); |
1763 | |
1764 | if (val) { |
1765 | /* override the inherited value with our own. |
1766 | * This is a little weak because it only applies to elements[1] |
1767 | */ |
1768 | if (newLine->numElements > 1) |
1769 | removeElement(newLine, 1); |
1770 | insertElement(newLine, val, 1, cfi); |
1771 | |
1772 | /* but try to keep the rootspec from the template... sigh */ |
1773 | if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD)) { |
1774 | char * rootspec = getRootSpecifier(tmplLine->elements[1].item); |
1775 | if (rootspec != NULL) { |
1776 | free(newLine->elements[1].item); |
1777 | newLine->elements[1].item = |
1778 | sdupprintf("%s%s", rootspec, val); |
1779 | } |
1780 | } |
1781 | } |
1782 | |
1783 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? |
1784 | newLine->elements[0].item : ""); |
1785 | |
1786 | if (!entry->lines) { |
1787 | /* first one on the list */ |
1788 | entry->lines = newLine; |
1789 | } else if (prevLine) { |
1790 | /* add after prevLine */ |
1791 | newLine->next = prevLine->next; |
1792 | prevLine->next = newLine; |
1793 | } |
1794 | |
1795 | return newLine; |
1796 | } |
1797 | |
1798 | /* val may be NULL */ |
1799 | struct singleLine * addLine(struct singleEntry * entry, |
1800 | struct configFileInfo * cfi, |
1801 | enum lineType_e type, char * defaultIndent, |
1802 | const char * val) { |
1803 | struct singleLine * line, * prev; |
1804 | struct keywordTypes * kw; |
1805 | struct singleLine tmpl; |
1806 | |
1807 | /* NB: This function shouldn't allocate items on the heap, rather on the |
1808 | * stack since it calls addLineTmpl which will make copies. |
1809 | */ |
1810 | |
1811 | if (type == LT_TITLE && cfi->titleBracketed) { |
1812 | /* we're doing a bracketed title (zipl) */ |
1813 | tmpl.type = type; |
1814 | tmpl.numElements = 1; |
1815 | tmpl.elements = alloca(sizeof(*tmpl.elements)); |
1816 | tmpl.elements[0].item = alloca(strlen(val)+3); |
1817 | sprintf(tmpl.elements[0].item, "[%s]", val); |
1818 | tmpl.elements[0].indent = ""; |
1819 | val = NULL; |
1820 | } else { |
1821 | kw = getKeywordByType(type, cfi); |
1822 | if (!kw) abort(); |
1823 | tmpl.type = type; |
1824 | tmpl.numElements = val ? 2 : 1; |
1825 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
1826 | tmpl.elements[0].item = kw->key; |
1827 | tmpl.elements[0].indent = alloca(2); |
1828 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
1829 | if (val) { |
1830 | tmpl.elements[1].item = (char *)val; |
1831 | tmpl.elements[1].indent = ""; |
1832 | } |
1833 | } |
1834 | |
1835 | /* The last non-empty line gives us the indention to us and the line |
1836 | to insert after. Note that comments are considered empty lines, which |
1837 | may not be ideal? If there are no lines or we are looking at the |
1838 | first line, we use defaultIndent (the first line is normally indented |
1839 | differently from the rest) */ |
1840 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
1841 | if (line->numElements) prev = line; |
1842 | /* fall back on the last line if prev isn't otherwise set */ |
1843 | if (!line->next && !prev) prev = line; |
1844 | } |
1845 | |
1846 | if (prev == entry->lines) |
1847 | tmpl.indent = defaultIndent ?: ""; |
1848 | else |
1849 | tmpl.indent = prev->indent; |
1850 | |
1851 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
1852 | } |
1853 | |
1854 | void removeLine(struct singleEntry * entry, struct singleLine * line) { |
1855 | struct singleLine * prev; |
1856 | int i; |
1857 | |
1858 | for (i = 0; i < line->numElements; i++) { |
1859 | free(line->elements[i].item); |
1860 | free(line->elements[i].indent); |
1861 | } |
1862 | free(line->elements); |
1863 | free(line->indent); |
1864 | |
1865 | if (line == entry->lines) { |
1866 | entry->lines = line->next; |
1867 | } else { |
1868 | prev = entry->lines; |
1869 | while (prev->next != line) prev = prev->next; |
1870 | prev->next = line->next; |
1871 | } |
1872 | |
1873 | free(line); |
1874 | } |
1875 | |
1876 | static void insertElement(struct singleLine * line, |
1877 | const char * item, int insertHere, |
1878 | struct configFileInfo * cfi) |
1879 | { |
1880 | struct keywordTypes * kw; |
1881 | char indent[2] = ""; |
1882 | |
1883 | /* sanity check */ |
1884 | if (insertHere > line->numElements) { |
1885 | dbgPrintf("insertElement() adjusting insertHere from %d to %d\n", |
1886 | insertHere, line->numElements); |
1887 | insertHere = line->numElements; |
1888 | } |
1889 | |
1890 | line->elements = realloc(line->elements, (line->numElements + 1) * |
1891 | sizeof(*line->elements)); |
1892 | memmove(&line->elements[insertHere+1], |
1893 | &line->elements[insertHere], |
1894 | (line->numElements - insertHere) * |
1895 | sizeof(*line->elements)); |
1896 | line->elements[insertHere].item = strdup(item); |
1897 | |
1898 | kw = getKeywordByType(line->type, cfi); |
1899 | |
1900 | if (line->numElements == 0) { |
1901 | indent[0] = '\0'; |
1902 | } else if (insertHere == 0) { |
1903 | indent[0] = kw->nextChar; |
1904 | } else if (kw->separatorChar != '\0') { |
1905 | indent[0] = kw->separatorChar; |
1906 | } else { |
1907 | indent[0] = ' '; |
1908 | } |
1909 | |
1910 | if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') { |
1911 | /* move the end-of-line forward */ |
1912 | line->elements[insertHere].indent = |
1913 | line->elements[insertHere-1].indent; |
1914 | line->elements[insertHere-1].indent = strdup(indent); |
1915 | } else { |
1916 | line->elements[insertHere].indent = strdup(indent); |
1917 | } |
1918 | |
1919 | line->numElements++; |
1920 | |
1921 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", |
1922 | line->elements[0].item, |
1923 | line->elements[insertHere].item, |
1924 | line->elements[insertHere].indent, |
1925 | insertHere); |
1926 | } |
1927 | |
1928 | static void removeElement(struct singleLine * line, int removeHere) { |
1929 | int i; |
1930 | |
1931 | /* sanity check */ |
1932 | if (removeHere >= line->numElements) return; |
1933 | |
1934 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, |
1935 | removeHere, line->elements[removeHere].item); |
1936 | |
1937 | free(line->elements[removeHere].item); |
1938 | |
1939 | if (removeHere > 1) { |
1940 | /* previous argument gets this argument's post-indentation */ |
1941 | free(line->elements[removeHere-1].indent); |
1942 | line->elements[removeHere-1].indent = |
1943 | line->elements[removeHere].indent; |
1944 | } else { |
1945 | free(line->elements[removeHere].indent); |
1946 | } |
1947 | |
1948 | /* now collapse the array, but don't bother to realloc smaller */ |
1949 | for (i = removeHere; i < line->numElements - 1; i++) |
1950 | line->elements[i] = line->elements[i + 1]; |
1951 | |
1952 | line->numElements--; |
1953 | } |
1954 | |
1955 | int argMatch(const char * one, const char * two) { |
1956 | char * first, * second; |
1957 | char * chptr; |
1958 | |
1959 | first = strcpy(alloca(strlen(one) + 1), one); |
1960 | second = strcpy(alloca(strlen(two) + 1), two); |
1961 | |
1962 | chptr = strchr(first, '='); |
1963 | if (chptr) *chptr = '\0'; |
1964 | |
1965 | chptr = strchr(second, '='); |
1966 | if (chptr) *chptr = '\0'; |
1967 | |
1968 | return strcmp(first, second); |
1969 | } |
1970 | |
1971 | int updateActualImage(struct grubConfig * cfg, const char * image, |
1972 | const char * prefix, const char * addArgs, |
1973 | const char * removeArgs, int multibootArgs) { |
1974 | struct singleEntry * entry; |
1975 | struct singleLine * line, * rootLine; |
1976 | int index = 0; |
1977 | int i, k; |
1978 | const char ** newArgs, ** oldArgs; |
1979 | const char ** arg; |
1980 | int useKernelArgs, useRoot; |
1981 | int firstElement; |
1982 | int *usedElements, *usedArgs; |
1983 | int doreplace; |
1984 | |
1985 | if (!image) return 0; |
1986 | |
1987 | if (!addArgs) { |
1988 | newArgs = malloc(sizeof(*newArgs)); |
1989 | *newArgs = NULL; |
1990 | } else { |
1991 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
1992 | fprintf(stderr, |
1993 | _("grubby: error separating arguments '%s'\n"), addArgs); |
1994 | return 1; |
1995 | } |
1996 | } |
1997 | |
1998 | if (!removeArgs) { |
1999 | oldArgs = malloc(sizeof(*oldArgs)); |
2000 | *oldArgs = NULL; |
2001 | } else { |
2002 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
2003 | fprintf(stderr, |
2004 | _("grubby: error separating arguments '%s'\n"), removeArgs); |
2005 | free(newArgs); |
2006 | return 1; |
2007 | } |
2008 | } |
2009 | |
2010 | |
2011 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
2012 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); |
2013 | |
2014 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
2015 | && !multibootArgs); |
2016 | |
2017 | for (k = 0, arg = newArgs; *arg; arg++, k++) ; |
2018 | usedArgs = calloc(k, sizeof(*usedArgs)); |
2019 | |
2020 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
2021 | |
2022 | if (multibootArgs && !entry->multiboot) |
2023 | continue; |
2024 | |
2025 | /* Determine where to put the args. If this config supports |
2026 | * LT_KERNELARGS, use that. Otherwise use |
2027 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. |
2028 | */ |
2029 | if (useKernelArgs) { |
2030 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2031 | if (!line) { |
2032 | /* no LT_KERNELARGS, need to add it */ |
2033 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, |
2034 | cfg->secondaryIndent, NULL); |
2035 | } |
2036 | firstElement = 1; |
2037 | |
2038 | } else if (multibootArgs) { |
2039 | line = getLineByType(LT_HYPER, entry->lines); |
2040 | if (!line) { |
2041 | /* a multiboot entry without LT_HYPER? */ |
2042 | continue; |
2043 | } |
2044 | firstElement = 2; |
2045 | |
2046 | } else { |
2047 | line = getLineByType(LT_KERNEL|LT_MBMODULE, entry->lines); |
2048 | if (!line) { |
2049 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ |
2050 | continue; |
2051 | } |
2052 | firstElement = 2; |
2053 | } |
2054 | |
2055 | /* handle the elilo case which does: |
2056 | * append="hypervisor args -- kernel args" |
2057 | */ |
2058 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { |
2059 | /* this is a multiboot entry, make sure there's |
2060 | * -- on the args line |
2061 | */ |
2062 | for (i = firstElement; i < line->numElements; i++) { |
2063 | if (!strcmp(line->elements[i].item, "--")) |
2064 | break; |
2065 | } |
2066 | if (i == line->numElements) { |
2067 | /* assume all existing args are kernel args, |
2068 | * prepend -- to make it official |
2069 | */ |
2070 | insertElement(line, "--", firstElement, cfg->cfi); |
2071 | i = firstElement; |
2072 | } |
2073 | if (!multibootArgs) { |
2074 | /* kernel args start after the -- */ |
2075 | firstElement = i + 1; |
2076 | } |
2077 | } else if (cfg->cfi->mbConcatArgs) { |
2078 | /* this is a non-multiboot entry, remove hyper args */ |
2079 | for (i = firstElement; i < line->numElements; i++) { |
2080 | if (!strcmp(line->elements[i].item, "--")) |
2081 | break; |
2082 | } |
2083 | if (i < line->numElements) { |
2084 | /* remove args up to -- */ |
2085 | while (strcmp(line->elements[firstElement].item, "--")) |
2086 | removeElement(line, firstElement); |
2087 | /* remove -- */ |
2088 | removeElement(line, firstElement); |
2089 | } |
2090 | } |
2091 | |
2092 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
2093 | |
2094 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
2095 | if (usedArgs[k]) continue; |
2096 | |
2097 | doreplace = 1; |
2098 | for (i = firstElement; i < line->numElements; i++) { |
2099 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2100 | !strcmp(line->elements[i].item, "--")) |
2101 | { |
2102 | /* reached the end of hyper args, insert here */ |
2103 | doreplace = 0; |
2104 | break; |
2105 | } |
2106 | if (usedElements[i]) |
2107 | continue; |
2108 | if (!argMatch(line->elements[i].item, *arg)) { |
2109 | usedElements[i]=1; |
2110 | usedArgs[k]=1; |
2111 | break; |
2112 | } |
2113 | } |
2114 | |
2115 | if (i < line->numElements && doreplace) { |
2116 | /* direct replacement */ |
2117 | free(line->elements[i].item); |
2118 | line->elements[i].item = strdup(*arg); |
2119 | |
2120 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
2121 | /* root= replacement */ |
2122 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2123 | if (rootLine) { |
2124 | free(rootLine->elements[1].item); |
2125 | rootLine->elements[1].item = strdup(*arg + 5); |
2126 | } else { |
2127 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, |
2128 | cfg->secondaryIndent, *arg + 5); |
2129 | } |
2130 | } |
2131 | |
2132 | else { |
2133 | /* insert/append */ |
2134 | insertElement(line, *arg, i, cfg->cfi); |
2135 | usedElements = realloc(usedElements, line->numElements * |
2136 | sizeof(*usedElements)); |
2137 | memmove(&usedElements[i + 1], &usedElements[i], |
2138 | line->numElements - i - 1); |
2139 | usedElements[i] = 1; |
2140 | |
2141 | /* if we updated a root= here even though there is a |
2142 | LT_ROOT available we need to remove the LT_ROOT entry |
2143 | (this will happen if we switch from a device to a label) */ |
2144 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
2145 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2146 | if (rootLine) |
2147 | removeLine(entry, rootLine); |
2148 | } |
2149 | } |
2150 | } |
2151 | |
2152 | free(usedElements); |
2153 | |
2154 | for (arg = oldArgs; *arg; arg++) { |
2155 | for (i = firstElement; i < line->numElements; i++) { |
2156 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2157 | !strcmp(line->elements[i].item, "--")) |
2158 | /* reached the end of hyper args, stop here */ |
2159 | break; |
2160 | if (!argMatch(line->elements[i].item, *arg)) { |
2161 | removeElement(line, i); |
2162 | break; |
2163 | } |
2164 | } |
2165 | /* handle removing LT_ROOT line too */ |
2166 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
2167 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2168 | if (rootLine) |
2169 | removeLine(entry, rootLine); |
2170 | } |
2171 | } |
2172 | |
2173 | if (line->numElements == 1) { |
2174 | /* don't need the line at all (note it has to be a |
2175 | LT_KERNELARGS for this to happen */ |
2176 | removeLine(entry, line); |
2177 | } |
2178 | } |
2179 | |
2180 | free(usedArgs); |
2181 | free(newArgs); |
2182 | free(oldArgs); |
2183 | |
2184 | return 0; |
2185 | } |
2186 | |
2187 | int updateImage(struct grubConfig * cfg, const char * image, |
2188 | const char * prefix, const char * addArgs, |
2189 | const char * removeArgs, |
2190 | const char * addMBArgs, const char * removeMBArgs) { |
2191 | int rc = 0; |
2192 | |
2193 | if (!image) return rc; |
2194 | |
2195 | /* update the main args first... */ |
2196 | if (addArgs || removeArgs) |
2197 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); |
2198 | if (rc) return rc; |
2199 | |
2200 | /* and now any multiboot args */ |
2201 | if (addMBArgs || removeMBArgs) |
2202 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); |
2203 | return rc; |
2204 | } |
2205 | |
2206 | int updateInitrd(struct grubConfig * cfg, const char * image, |
2207 | const char * prefix, const char * initrd) { |
2208 | struct singleEntry * entry; |
2209 | struct singleLine * line, * kernelLine; |
2210 | int index = 0; |
2211 | |
2212 | if (!image) return 0; |
2213 | |
2214 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
2215 | kernelLine = getLineByType(LT_KERNEL, entry->lines); |
2216 | if (!kernelLine) continue; |
2217 | |
2218 | line = getLineByType(LT_INITRD, entry->lines); |
2219 | if (line) |
2220 | removeLine(entry, line); |
2221 | if (prefix) { |
2222 | int prefixLen = strlen(prefix); |
2223 | if (!strncmp(initrd, prefix, prefixLen)) |
2224 | initrd += prefixLen; |
2225 | } |
2226 | line = addLine(entry, cfg->cfi, LT_INITRD, kernelLine->indent, initrd); |
2227 | if (!line) return 1; |
2228 | break; |
2229 | } |
2230 | |
2231 | return 0; |
2232 | } |
2233 | |
2234 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { |
2235 | int fd; |
2236 | unsigned char bootSect[512]; |
2237 | int offset; |
2238 | |
2239 | fd = open(device, O_RDONLY); |
2240 | if (fd < 0) { |
2241 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
2242 | device, strerror(errno)); |
2243 | return 1; |
2244 | } |
2245 | |
2246 | if (read(fd, bootSect, 512) != 512) { |
2247 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2248 | device, strerror(errno)); |
2249 | return 1; |
2250 | } |
2251 | close(fd); |
2252 | |
2253 | /* first three bytes should match, a jmp short should be in there */ |
2254 | if (memcmp(boot, bootSect, 3)) |
2255 | return 0; |
2256 | |
2257 | if (boot[1] == 0xeb) { |
2258 | offset = boot[2] + 2; |
2259 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
2260 | offset = (boot[3] << 8) + boot[2] + 2; |
2261 | } else if (boot[0] == 0xeb) { |
2262 | offset = boot[1] + 2; |
2263 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
2264 | offset = (boot[2] << 8) + boot[1] + 2; |
2265 | } else { |
2266 | return 0; |
2267 | } |
2268 | |
2269 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
2270 | return 0; |
2271 | |
2272 | return 2; |
2273 | } |
2274 | |
2275 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { |
2276 | int fd; |
2277 | char buf[65536]; |
2278 | char * end; |
2279 | char * chptr; |
2280 | char * chptr2; |
2281 | int rc; |
2282 | |
2283 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
2284 | *raw* devices listed in there */ |
2285 | |
2286 | if (!strncmp(mdDev, "/dev/", 5)) |
2287 | mdDev += 5; |
2288 | |
2289 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
2290 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
2291 | strerror(errno)); |
2292 | return 2; |
2293 | } |
2294 | |
2295 | rc = read(fd, buf, sizeof(buf) - 1); |
2296 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
2297 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
2298 | strerror(errno)); |
2299 | close(fd); |
2300 | return 2; |
2301 | } |
2302 | close(fd); |
2303 | buf[rc] = '\0'; |
2304 | |
2305 | chptr = buf; |
2306 | while (*chptr) { |
2307 | end = strchr(chptr, '\n'); |
2308 | if (!end) break; |
2309 | *end = '\0'; |
2310 | |
2311 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
2312 | chptr[strlen(mdDev)] == ' ') { |
2313 | |
2314 | /* found the device */ |
2315 | while (*chptr && *chptr != ':') chptr++; |
2316 | chptr++; |
2317 | while (*chptr && isspace(*chptr)) chptr++; |
2318 | |
2319 | /* skip the "active" bit */ |
2320 | while (*chptr && !isspace(*chptr)) chptr++; |
2321 | while (*chptr && isspace(*chptr)) chptr++; |
2322 | |
2323 | /* skip the raid level */ |
2324 | while (*chptr && !isspace(*chptr)) chptr++; |
2325 | while (*chptr && isspace(*chptr)) chptr++; |
2326 | |
2327 | /* everything else is partition stuff */ |
2328 | while (*chptr) { |
2329 | chptr2 = chptr; |
2330 | while (*chptr2 && *chptr2 != '[') chptr2++; |
2331 | if (!*chptr2) break; |
2332 | |
2333 | /* yank off the numbers at the end */ |
2334 | chptr2--; |
2335 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; |
2336 | chptr2++; |
2337 | *chptr2 = '\0'; |
2338 | |
2339 | /* Better, now we need the /dev/ back. We're done with |
2340 | * everything before this point, so we can just put |
2341 | * the /dev/ part there. There will always be room. */ |
2342 | memcpy(chptr - 5, "/dev/", 5); |
2343 | rc = checkDeviceBootloader(chptr - 5, boot); |
2344 | if (rc != 2) { |
2345 | return rc; |
2346 | } |
2347 | |
2348 | chptr = chptr2 + 1; |
2349 | /* skip the [11] bit */ |
2350 | while (*chptr && !isspace(*chptr)) chptr++; |
2351 | /* and move to the next one */ |
2352 | while (*chptr && isspace(*chptr)) chptr++; |
2353 | } |
2354 | |
2355 | /* we're good to go */ |
2356 | return 2; |
2357 | } |
2358 | |
2359 | chptr = end + 1; |
2360 | } |
2361 | |
2362 | fprintf(stderr, |
2363 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
2364 | mdDev); |
2365 | return 0; |
2366 | } |
2367 | |
2368 | int checkForLilo(struct grubConfig * config) { |
2369 | int fd; |
2370 | unsigned char boot[512]; |
2371 | struct singleLine * line; |
2372 | |
2373 | for (line = config->theLines; line; line = line->next) |
2374 | if (line->type == LT_BOOT) break; |
2375 | |
2376 | if (!line) { |
2377 | fprintf(stderr, |
2378 | _("grubby: no boot line found in lilo configuration\n")); |
2379 | return 1; |
2380 | } |
2381 | |
2382 | if (line->numElements != 2) return 1; |
2383 | |
2384 | fd = open("/boot/boot.b", O_RDONLY); |
2385 | if (fd < 0) { |
2386 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
2387 | "/boot/boot.b", strerror(errno)); |
2388 | return 1; |
2389 | } |
2390 | |
2391 | if (read(fd, boot, 512) != 512) { |
2392 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2393 | "/boot/boot.b", strerror(errno)); |
2394 | return 1; |
2395 | } |
2396 | close(fd); |
2397 | |
2398 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
2399 | return checkLiloOnRaid(line->elements[1].item, boot); |
2400 | |
2401 | return checkDeviceBootloader(line->elements[1].item, boot); |
2402 | } |
2403 | |
2404 | int checkForGrub(struct grubConfig * config) { |
2405 | int fd; |
2406 | unsigned char bootSect[512]; |
2407 | char * boot; |
2408 | |
2409 | if (parseSysconfigGrub(NULL, &boot)) |
2410 | return 0; |
2411 | |
2412 | /* assume grub is not installed -- not an error condition */ |
2413 | if (!boot) |
2414 | return 0; |
2415 | |
2416 | fd = open("/boot/grub/stage1", O_RDONLY); |
2417 | if (fd < 0) |
2418 | /* this doesn't exist if grub hasn't been installed */ |
2419 | return 0; |
2420 | |
2421 | if (read(fd, bootSect, 512) != 512) { |
2422 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2423 | "/boot/grub/stage1", strerror(errno)); |
2424 | close(fd); |
2425 | return 1; |
2426 | } |
2427 | close(fd); |
2428 | |
2429 | return checkDeviceBootloader(boot, bootSect); |
2430 | } |
2431 | |
2432 | int checkForExtLinux(struct grubConfig * config) { |
2433 | int fd; |
2434 | unsigned char bootSect[512]; |
2435 | char * boot; |
2436 | char executable[] = "/boot/extlinux/extlinux"; |
2437 | |
2438 | printf("entered: checkForExtLinux()\n"); |
2439 | |
2440 | if (parseSysconfigGrub(NULL, &boot)) |
2441 | return 0; |
2442 | |
2443 | /* assume grub is not installed -- not an error condition */ |
2444 | if (!boot) |
2445 | return 0; |
2446 | |
2447 | fd = open(executable, O_RDONLY); |
2448 | if (fd < 0) |
2449 | /* this doesn't exist if grub hasn't been installed */ |
2450 | return 0; |
2451 | |
2452 | if (read(fd, bootSect, 512) != 512) { |
2453 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2454 | executable, strerror(errno)); |
2455 | return 1; |
2456 | } |
2457 | close(fd); |
2458 | |
2459 | return checkDeviceBootloader(boot, bootSect); |
2460 | } |
2461 | |
2462 | static char * getRootSpecifier(char * str) { |
2463 | char * idx, * rootspec = NULL; |
2464 | |
2465 | if (*str == '(') { |
2466 | idx = rootspec = strdup(str); |
2467 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; |
2468 | *(++idx) = '\0'; |
2469 | } |
2470 | return rootspec; |
2471 | } |
2472 | |
2473 | static char * getInitrdVal(struct grubConfig * config, |
2474 | const char * prefix, struct singleLine *tmplLine, |
2475 | const char * newKernelInitrd, |
2476 | char ** extraInitrds, int extraInitrdCount) |
2477 | { |
2478 | char *initrdVal, *end; |
2479 | int i; |
2480 | size_t totalSize; |
2481 | size_t prefixLen; |
2482 | char separatorChar; |
2483 | |
2484 | prefixLen = strlen(prefix); |
2485 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */; |
2486 | |
2487 | for (i = 0; i < extraInitrdCount; i++) { |
2488 | totalSize += sizeof(separatorChar); |
2489 | totalSize += strlen(extraInitrds[i]) - prefixLen; |
2490 | } |
2491 | |
2492 | initrdVal = end = malloc(totalSize); |
2493 | |
2494 | end = stpcpy (end, newKernelInitrd + prefixLen); |
2495 | |
2496 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; |
2497 | for (i = 0; i < extraInitrdCount; i++) { |
2498 | const char *extraInitrd; |
2499 | int j; |
2500 | |
2501 | extraInitrd = extraInitrds[i] + prefixLen; |
2502 | /* Don't add entries that are already there */ |
2503 | if (tmplLine != NULL) { |
2504 | for (j = 2; j < tmplLine->numElements; j++) |
2505 | if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0) |
2506 | break; |
2507 | |
2508 | if (j != tmplLine->numElements) |
2509 | continue; |
2510 | } |
2511 | |
2512 | *end++ = separatorChar; |
2513 | end = stpcpy(end, extraInitrd); |
2514 | } |
2515 | |
2516 | return initrdVal; |
2517 | } |
2518 | |
2519 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, |
2520 | const char * prefix, |
2521 | char * newKernelPath, char * newKernelTitle, |
2522 | char * newKernelArgs, char * newKernelInitrd, |
2523 | char ** extraInitrds, int extraInitrdCount, |
2524 | char * newMBKernel, char * newMBKernelArgs) { |
2525 | struct singleEntry * new; |
2526 | struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL; |
2527 | int needs; |
2528 | char * chptr; |
2529 | |
2530 | if (!newKernelPath) return 0; |
2531 | |
2532 | /* if the newKernelTitle is too long silently munge it into something |
2533 | * we can live with. truncating is first check, then we'll just mess with |
2534 | * it until it looks better */ |
2535 | if (config->cfi->maxTitleLength && |
2536 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
2537 | char * buf = alloca(config->cfi->maxTitleLength + 7); |
2538 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); |
2539 | int i = 1; |
2540 | |
2541 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); |
2542 | while (findEntryByPath(config, buf, NULL, NULL)) { |
2543 | sprintf(numBuf, "%d", i++); |
2544 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
2545 | } |
2546 | |
2547 | newKernelTitle = buf + 6; |
2548 | } |
2549 | |
2550 | new = malloc(sizeof(*new)); |
2551 | new->skip = 0; |
2552 | new->multiboot = 0; |
2553 | new->next = config->entries; |
2554 | new->lines = NULL; |
2555 | config->entries = new; |
2556 | |
2557 | /* copy/update from the template */ |
2558 | needs = NEED_KERNEL | NEED_TITLE; |
2559 | if (newKernelInitrd) |
2560 | needs |= NEED_INITRD; |
2561 | if (newMBKernel) { |
2562 | needs |= NEED_MB; |
2563 | new->multiboot = 1; |
2564 | } |
2565 | |
2566 | if (template) { |
2567 | for (masterLine = template->lines; |
2568 | masterLine && (tmplLine = lineDup(masterLine)); |
2569 | lineFree(tmplLine), masterLine = masterLine->next) |
2570 | { |
2571 | dbgPrintf("addNewKernel processing %d\n", tmplLine->type); |
2572 | |
2573 | /* skip comments */ |
2574 | chptr = tmplLine->indent; |
2575 | while (*chptr && isspace(*chptr)) chptr++; |
2576 | if (*chptr == '#') continue; |
2577 | |
2578 | if (tmplLine->type == LT_KERNEL && |
2579 | tmplLine->numElements >= 2) { |
2580 | if (!template->multiboot && (needs & NEED_MB)) { |
2581 | /* it's not a multiboot template and this is the kernel |
2582 | * line. Try to be intelligent about inserting the |
2583 | * hypervisor at the same time. |
2584 | */ |
2585 | if (config->cfi->mbHyperFirst) { |
2586 | /* insert the hypervisor first */ |
2587 | newLine = addLine(new, config->cfi, LT_HYPER, |
2588 | tmplLine->indent, |
2589 | newMBKernel + strlen(prefix)); |
2590 | /* set up for adding the kernel line */ |
2591 | free(tmplLine->indent); |
2592 | tmplLine->indent = strdup(config->secondaryIndent); |
2593 | needs &= ~NEED_MB; |
2594 | } |
2595 | if (needs & NEED_KERNEL) { |
2596 | /* use addLineTmpl to preserve line elements, |
2597 | * otherwise we could just call addLine. Unfortunately |
2598 | * this means making some changes to the template |
2599 | * such as the indent change above and the type |
2600 | * change below. |
2601 | */ |
2602 | struct keywordTypes * mbm_kw = |
2603 | getKeywordByType(LT_MBMODULE, config->cfi); |
2604 | if (mbm_kw) { |
2605 | tmplLine->type = LT_MBMODULE; |
2606 | free(tmplLine->elements[0].item); |
2607 | tmplLine->elements[0].item = strdup(mbm_kw->key); |
2608 | } |
2609 | newLine = addLineTmpl(new, tmplLine, newLine, |
2610 | newKernelPath + strlen(prefix), config->cfi); |
2611 | needs &= ~NEED_KERNEL; |
2612 | } |
2613 | if (needs & NEED_MB) { /* !mbHyperFirst */ |
2614 | newLine = addLine(new, config->cfi, LT_HYPER, |
2615 | config->secondaryIndent, |
2616 | newMBKernel + strlen(prefix)); |
2617 | needs &= ~NEED_MB; |
2618 | } |
2619 | } else if (needs & NEED_KERNEL) { |
2620 | newLine = addLineTmpl(new, tmplLine, newLine, |
2621 | newKernelPath + strlen(prefix), config->cfi); |
2622 | needs &= ~NEED_KERNEL; |
2623 | } |
2624 | |
2625 | } else if (tmplLine->type == LT_HYPER && |
2626 | tmplLine->numElements >= 2) { |
2627 | if (needs & NEED_MB) { |
2628 | newLine = addLineTmpl(new, tmplLine, newLine, |
2629 | newMBKernel + strlen(prefix), config->cfi); |
2630 | needs &= ~NEED_MB; |
2631 | } |
2632 | |
2633 | } else if (tmplLine->type == LT_MBMODULE && |
2634 | tmplLine->numElements >= 2) { |
2635 | if (new->multiboot) { |
2636 | if (needs & NEED_KERNEL) { |
2637 | newLine = addLineTmpl(new, tmplLine, newLine, |
2638 | newKernelPath + |
2639 | strlen(prefix), config->cfi); |
2640 | needs &= ~NEED_KERNEL; |
2641 | } else if (config->cfi->mbInitRdIsModule && |
2642 | (needs & NEED_INITRD)) { |
2643 | char *initrdVal; |
2644 | initrdVal = getInitrdVal(config, prefix, tmplLine, |
2645 | newKernelInitrd, extraInitrds, |
2646 | extraInitrdCount); |
2647 | newLine = addLineTmpl(new, tmplLine, newLine, |
2648 | initrdVal, config->cfi); |
2649 | free(initrdVal); |
2650 | needs &= ~NEED_INITRD; |
2651 | } |
2652 | } else if (needs & NEED_KERNEL) { |
2653 | /* template is multi but new is not, |
2654 | * insert the kernel in the first module slot |
2655 | */ |
2656 | tmplLine->type = LT_KERNEL; |
2657 | free(tmplLine->elements[0].item); |
2658 | tmplLine->elements[0].item = |
2659 | strdup(getKeywordByType(LT_KERNEL, config->cfi)->key); |
2660 | newLine = addLineTmpl(new, tmplLine, newLine, |
2661 | newKernelPath + strlen(prefix), config->cfi); |
2662 | needs &= ~NEED_KERNEL; |
2663 | } else if (needs & NEED_INITRD) { |
2664 | char *initrdVal; |
2665 | /* template is multi but new is not, |
2666 | * insert the initrd in the second module slot |
2667 | */ |
2668 | tmplLine->type = LT_INITRD; |
2669 | free(tmplLine->elements[0].item); |
2670 | tmplLine->elements[0].item = |
2671 | strdup(getKeywordByType(LT_INITRD, config->cfi)->key); |
2672 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
2673 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
2674 | free(initrdVal); |
2675 | needs &= ~NEED_INITRD; |
2676 | } |
2677 | |
2678 | } else if (tmplLine->type == LT_INITRD && |
2679 | tmplLine->numElements >= 2) { |
2680 | if (needs & NEED_INITRD && |
2681 | new->multiboot && !template->multiboot && |
2682 | config->cfi->mbInitRdIsModule) { |
2683 | /* make sure we don't insert the module initrd |
2684 | * before the module kernel... if we don't do it here, |
2685 | * it will be inserted following the template. |
2686 | */ |
2687 | if (!needs & NEED_KERNEL) { |
2688 | char *initrdVal; |
2689 | |
2690 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
2691 | newLine = addLine(new, config->cfi, LT_MBMODULE, |
2692 | config->secondaryIndent, |
2693 | initrdVal); |
2694 | free(initrdVal); |
2695 | needs &= ~NEED_INITRD; |
2696 | } |
2697 | } else if (needs & NEED_INITRD) { |
2698 | char *initrdVal; |
2699 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
2700 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
2701 | free(initrdVal); |
2702 | needs &= ~NEED_INITRD; |
2703 | } |
2704 | |
2705 | } else if (tmplLine->type == LT_TITLE && |
2706 | (needs & NEED_TITLE)) { |
2707 | if (tmplLine->numElements >= 2) { |
2708 | newLine = addLineTmpl(new, tmplLine, newLine, |
2709 | newKernelTitle, config->cfi); |
2710 | needs &= ~NEED_TITLE; |
2711 | } else if (tmplLine->numElements == 1 && |
2712 | config->cfi->titleBracketed) { |
2713 | /* addLineTmpl doesn't handle titleBracketed */ |
2714 | newLine = addLine(new, config->cfi, LT_TITLE, |
2715 | tmplLine->indent, newKernelTitle); |
2716 | needs &= ~NEED_TITLE; |
2717 | } |
2718 | |
2719 | } else { |
2720 | /* pass through other lines from the template */ |
2721 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); |
2722 | } |
2723 | } |
2724 | |
2725 | } else { |
2726 | /* don't have a template, so start the entry with the |
2727 | * appropriate starting line |
2728 | */ |
2729 | switch (config->cfi->entrySeparator) { |
2730 | case LT_KERNEL: |
2731 | if (new->multiboot && config->cfi->mbHyperFirst) { |
2732 | /* fall through to LT_HYPER */ |
2733 | } else { |
2734 | newLine = addLine(new, config->cfi, LT_KERNEL, |
2735 | config->primaryIndent, |
2736 | newKernelPath + strlen(prefix)); |
2737 | needs &= ~NEED_KERNEL; |
2738 | break; |
2739 | } |
2740 | |
2741 | case LT_HYPER: |
2742 | newLine = addLine(new, config->cfi, LT_HYPER, |
2743 | config->primaryIndent, |
2744 | newMBKernel + strlen(prefix)); |
2745 | needs &= ~NEED_MB; |
2746 | break; |
2747 | |
2748 | case LT_TITLE: |
2749 | if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above) |
2750 | char * templabel; |
2751 | int x = 0, y = 0; |
2752 | |
2753 | templabel = strdup(newKernelTitle); |
2754 | while( templabel[x]){ |
2755 | if( templabel[x] == ' ' ){ |
2756 | y = x; |
2757 | while( templabel[y] ){ |
2758 | templabel[y] = templabel[y+1]; |
2759 | y++; |
2760 | } |
2761 | } |
2762 | x++; |
2763 | } |
2764 | newLine = addLine(new, config->cfi, LT_TITLE, |
2765 | config->primaryIndent, templabel); |
2766 | free(templabel); |
2767 | }else{ |
2768 | newLine = addLine(new, config->cfi, LT_TITLE, |
2769 | config->primaryIndent, newKernelTitle); |
2770 | } |
2771 | needs &= ~NEED_TITLE; |
2772 | break; |
2773 | |
2774 | default: |
2775 | abort(); |
2776 | } |
2777 | } |
2778 | |
2779 | /* add the remainder of the lines, i.e. those that either |
2780 | * weren't present in the template, or in the case of no template, |
2781 | * all the lines following the entrySeparator. |
2782 | */ |
2783 | if (needs & NEED_TITLE) { |
2784 | newLine = addLine(new, config->cfi, LT_TITLE, |
2785 | config->secondaryIndent, |
2786 | newKernelTitle); |
2787 | needs &= ~NEED_TITLE; |
2788 | } |
2789 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
2790 | newLine = addLine(new, config->cfi, LT_HYPER, |
2791 | config->secondaryIndent, |
2792 | newMBKernel + strlen(prefix)); |
2793 | needs &= ~NEED_MB; |
2794 | } |
2795 | if (needs & NEED_KERNEL) { |
2796 | newLine = addLine(new, config->cfi, |
2797 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
2798 | config->cfi)) ? |
2799 | LT_MBMODULE : LT_KERNEL, |
2800 | config->secondaryIndent, |
2801 | newKernelPath + strlen(prefix)); |
2802 | needs &= ~NEED_KERNEL; |
2803 | } |
2804 | if (needs & NEED_MB) { |
2805 | newLine = addLine(new, config->cfi, LT_HYPER, |
2806 | config->secondaryIndent, |
2807 | newMBKernel + strlen(prefix)); |
2808 | needs &= ~NEED_MB; |
2809 | } |
2810 | if (needs & NEED_INITRD) { |
2811 | char *initrdVal; |
2812 | initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount); |
2813 | newLine = addLine(new, config->cfi, |
2814 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
2815 | config->cfi)) ? |
2816 | LT_MBMODULE : LT_INITRD, |
2817 | config->secondaryIndent, |
2818 | initrdVal); |
2819 | free(initrdVal); |
2820 | needs &= ~NEED_INITRD; |
2821 | } |
2822 | |
2823 | if (needs) { |
2824 | printf(_("grubby: needs=%d, aborting\n"), needs); |
2825 | abort(); |
2826 | } |
2827 | |
2828 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, |
2829 | newMBKernelArgs, NULL)) return 1; |
2830 | |
2831 | return 0; |
2832 | } |
2833 | |
2834 | static void traceback(int signum) |
2835 | { |
2836 | void *array[40]; |
2837 | size_t size; |
2838 | |
2839 | signal(SIGSEGV, SIG_DFL); |
2840 | memset(array, '\0', sizeof (array)); |
2841 | size = backtrace(array, 40); |
2842 | |
2843 | fprintf(stderr, "grubby recieved SIGSEGV! Backtrace (%ld):\n", |
2844 | (unsigned long)size); |
2845 | backtrace_symbols_fd(array, size, STDERR_FILENO); |
2846 | exit(1); |
2847 | } |
2848 | |
2849 | int main(int argc, const char ** argv) { |
2850 | poptContext optCon; |
2851 | char * grubConfig = NULL; |
2852 | char * outputFile = NULL; |
2853 | int arg = 0; |
2854 | int flags = 0; |
2855 | int badImageOkay = 0; |
2856 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
2857 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
2858 | int configureExtLinux = 0; |
2859 | int bootloaderProbe = 0; |
2860 | int extraInitrdCount = 0; |
2861 | char * updateKernelPath = NULL; |
2862 | char * newKernelPath = NULL; |
2863 | char * removeKernelPath = NULL; |
2864 | char * newKernelArgs = NULL; |
2865 | char * newKernelInitrd = NULL; |
2866 | char * newKernelTitle = NULL; |
2867 | char * newKernelVersion = NULL; |
2868 | char * newMBKernel = NULL; |
2869 | char * newMBKernelArgs = NULL; |
2870 | char * removeMBKernelArgs = NULL; |
2871 | char * removeMBKernel = NULL; |
2872 | char * bootPrefix = NULL; |
2873 | char * defaultKernel = NULL; |
2874 | char * removeArgs = NULL; |
2875 | char * kernelInfo = NULL; |
2876 | char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
2877 | const char * chptr = NULL; |
2878 | struct configFileInfo * cfi = NULL; |
2879 | struct grubConfig * config; |
2880 | struct singleEntry * template = NULL; |
2881 | int copyDefault = 0, makeDefault = 0; |
2882 | int displayDefault = 0; |
2883 | struct poptOption options[] = { |
2884 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
2885 | _("add an entry for the specified kernel"), _("kernel-path") }, |
2886 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
2887 | _("add an entry for the specified multiboot kernel"), NULL }, |
2888 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
2889 | _("default arguments for the new kernel or new arguments for " |
2890 | "kernel being updated"), _("args") }, |
2891 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
2892 | _("default arguments for the new multiboot kernel or " |
2893 | "new arguments for multiboot kernel being updated"), NULL }, |
2894 | { "bad-image-okay", 0, 0, &badImageOkay, 0, |
2895 | _("don't sanity check images in boot entries (for testing only)"), |
2896 | NULL }, |
2897 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
2898 | _("filestystem which contains /boot directory (for testing only)"), |
2899 | _("bootfs") }, |
2900 | #if defined(__i386__) || defined(__x86_64__) |
2901 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
2902 | _("check if lilo is installed on lilo.conf boot sector") }, |
2903 | #endif |
2904 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
2905 | _("path to grub config file to update (\"-\" for stdin)"), |
2906 | _("path") }, |
2907 | { "copy-default", 0, 0, ©Default, 0, |
2908 | _("use the default boot entry as a template for the new entry " |
2909 | "being added; if the default is not a linux image, or if " |
2910 | "the kernel referenced by the default image does not exist, " |
2911 | "the first linux entry whose kernel does exist is used as the " |
2912 | "template"), NULL }, |
2913 | { "default-kernel", 0, 0, &displayDefault, 0, |
2914 | _("display the path of the default kernel") }, |
2915 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
2916 | _("configure elilo bootloader") }, |
2917 | { "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
2918 | _("configure extlinux bootloader (from syslinux)") }, |
2919 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
2920 | _("configure grub bootloader") }, |
2921 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
2922 | _("display boot information for specified kernel"), |
2923 | _("kernel-path") }, |
2924 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
2925 | _("initrd image for the new kernel"), _("initrd-path") }, |
2926 | { "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
2927 | _("auxilliary initrd image for things other than the new kernel"), _("initrd-path") }, |
2928 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
2929 | _("configure lilo bootloader") }, |
2930 | { "make-default", 0, 0, &makeDefault, 0, |
2931 | _("make the newly added entry the default boot entry"), NULL }, |
2932 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
2933 | _("path to output updated config file (\"-\" for stdout)"), |
2934 | _("path") }, |
2935 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
2936 | _("remove kernel arguments"), NULL }, |
2937 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
2938 | _("remove multiboot kernel arguments"), NULL }, |
2939 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
2940 | _("remove all entries for the specified kernel"), |
2941 | _("kernel-path") }, |
2942 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
2943 | _("remove all entries for the specified multiboot kernel"), NULL }, |
2944 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
2945 | _("make the first entry referencing the specified kernel " |
2946 | "the default"), _("kernel-path") }, |
2947 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
2948 | _("configure silo bootloader") }, |
2949 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
2950 | _("title to use for the new kernel entry"), _("entry-title") }, |
2951 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
2952 | _("updated information for the specified kernel"), |
2953 | _("kernel-path") }, |
2954 | { "version", 'v', 0, NULL, 'v', |
2955 | _("print the version of this program and exit"), NULL }, |
2956 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
2957 | _("configure yaboot bootloader") }, |
2958 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
2959 | _("configure zipl bootloader") }, |
2960 | POPT_AUTOHELP |
2961 | { 0, 0, 0, 0, 0 } |
2962 | }; |
2963 | |
2964 | useextlinuxmenu=0; |
2965 | |
2966 | signal(SIGSEGV, traceback); |
2967 | |
2968 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
2969 | poptReadDefaultConfig(optCon, 1); |
2970 | |
2971 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
2972 | switch (arg) { |
2973 | case 'v': |
2974 | printf("grubby version %s\n", VERSION); |
2975 | exit(0); |
2976 | break; |
2977 | case 'i': |
2978 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { |
2979 | extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon)); |
2980 | } else { |
2981 | fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount); |
2982 | return 1; |
2983 | } |
2984 | break; |
2985 | } |
2986 | } |
2987 | |
2988 | if (arg < -1) { |
2989 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
2990 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
2991 | poptStrerror(arg)); |
2992 | return 1; |
2993 | } |
2994 | |
2995 | if ((chptr = poptGetArg(optCon))) { |
2996 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
2997 | return 1; |
2998 | } |
2999 | |
3000 | if ((configureLilo + configureGrub + configureELilo + |
3001 | configureYaboot + configureSilo + configureZipl + |
3002 | configureExtLinux ) > 1) { |
3003 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); |
3004 | return 1; |
3005 | } else if (bootloaderProbe && grubConfig) { |
3006 | fprintf(stderr, |
3007 | _("grubby: cannot specify config file with --bootloader-probe\n")); |
3008 | return 1; |
3009 | } else if (configureLilo) { |
3010 | cfi = &liloConfigType; |
3011 | } else if (configureGrub) { |
3012 | cfi = &grubConfigType; |
3013 | } else if (configureELilo) { |
3014 | cfi = &eliloConfigType; |
3015 | } else if (configureYaboot) { |
3016 | cfi = &yabootConfigType; |
3017 | } else if (configureSilo) { |
3018 | cfi = &siloConfigType; |
3019 | } else if (configureZipl) { |
3020 | cfi = &ziplConfigType; |
3021 | } else if (configureExtLinux) { |
3022 | cfi = &extlinuxConfigType; |
3023 | useextlinuxmenu=1; |
3024 | } |
3025 | |
3026 | if (!cfi) { |
3027 | #ifdef __ia64__ |
3028 | cfi = &eliloConfigType; |
3029 | #elif __powerpc__ |
3030 | cfi = &yabootConfigType; |
3031 | #elif __sparc__ |
3032 | cfi = &siloConfigType; |
3033 | #elif __s390__ |
3034 | cfi = &ziplConfigType; |
3035 | #elif __s390x__ |
3036 | cfi = &ziplConfigtype; |
3037 | #else |
3038 | cfi = &grubConfigType; |
3039 | #endif |
3040 | } |
3041 | |
3042 | if (!grubConfig) |
3043 | grubConfig = cfi->defaultConfig; |
3044 | |
3045 | if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion || |
3046 | newKernelPath || removeKernelPath || makeDefault || |
3047 | defaultKernel)) { |
3048 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " |
3049 | "specified option")); |
3050 | return 1; |
3051 | } |
3052 | |
3053 | if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath || |
3054 | removeKernelPath)) { |
3055 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
3056 | "be used when adding or removing kernels\n")); |
3057 | return 1; |
3058 | } |
3059 | |
3060 | if (newKernelPath && !newKernelTitle) { |
3061 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
3062 | return 1; |
3063 | } else if (!newKernelPath && (newKernelTitle || copyDefault || |
3064 | (newKernelInitrd && !updateKernelPath)|| |
3065 | makeDefault || extraInitrdCount > 0)) { |
3066 | fprintf(stderr, _("grubby: kernel path expected\n")); |
3067 | return 1; |
3068 | } |
3069 | |
3070 | if (newKernelPath && updateKernelPath) { |
3071 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
3072 | "not be used together")); |
3073 | return 1; |
3074 | } |
3075 | |
3076 | if (makeDefault && defaultKernel) { |
3077 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
3078 | "may not be used together\n")); |
3079 | return 1; |
3080 | } else if (defaultKernel && removeKernelPath && |
3081 | !strcmp(defaultKernel, removeKernelPath)) { |
3082 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); |
3083 | return 1; |
3084 | } else if (defaultKernel && newKernelPath && |
3085 | !strcmp(defaultKernel, newKernelPath)) { |
3086 | makeDefault = 1; |
3087 | defaultKernel = NULL; |
3088 | } |
3089 | |
3090 | if (!strcmp(grubConfig, "-") && !outputFile) { |
3091 | fprintf(stderr, _("grubby: output file must be specified if stdin " |
3092 | "is used\n")); |
3093 | return 1; |
3094 | } |
3095 | |
3096 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel |
3097 | && !kernelInfo && !bootloaderProbe && !updateKernelPath |
3098 | && !removeMBKernel) { |
3099 | fprintf(stderr, _("grubby: no action specified\n")); |
3100 | return 1; |
3101 | } |
3102 | |
3103 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
3104 | |
3105 | if (cfi->needsBootPrefix) { |
3106 | if (!bootPrefix) { |
3107 | bootPrefix = findBootPrefix(); |
3108 | if (!bootPrefix) return 1; |
3109 | } else { |
3110 | /* this shouldn't end with a / */ |
3111 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
3112 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
3113 | } |
3114 | } else { |
3115 | bootPrefix = ""; |
3116 | } |
3117 | |
3118 | if (!cfi->mbAllowExtraInitRds && |
3119 | extraInitrdCount > 0) { |
3120 | fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig); |
3121 | return 1; |
3122 | } |
3123 | |
3124 | if (bootloaderProbe) { |
3125 | int lrc = 0, grc = 0, erc = 0; |
3126 | struct grubConfig * lconfig, * gconfig; |
3127 | |
3128 | if (!access(grubConfigType.defaultConfig, F_OK)) { |
3129 | gconfig = readConfig(grubConfigType.defaultConfig, &grubConfigType); |
3130 | if (!gconfig) |
3131 | grc = 1; |
3132 | else |
3133 | grc = checkForGrub(gconfig); |
3134 | } |
3135 | |
3136 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
3137 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); |
3138 | if (!lconfig) |
3139 | lrc = 1; |
3140 | else |
3141 | lrc = checkForLilo(lconfig); |
3142 | } |
3143 | |
3144 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
3145 | lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType); |
3146 | if (!lconfig) |
3147 | erc = 1; |
3148 | else |
3149 | erc = checkForExtLinux(lconfig); |
3150 | } |
3151 | |
3152 | if (lrc == 1 || grc == 1) return 1; |
3153 | |
3154 | if (lrc == 2) printf("lilo\n"); |
3155 | if (grc == 2) printf("grub\n"); |
3156 | if (erc == 2) printf("extlinux\n"); |
3157 | |
3158 | return 0; |
3159 | } |
3160 | |
3161 | config = readConfig(grubConfig, cfi); |
3162 | if (!config) return 1; |
3163 | |
3164 | if (displayDefault) { |
3165 | struct singleLine * line; |
3166 | struct singleEntry * entry; |
3167 | char * rootspec; |
3168 | |
3169 | if (config->defaultImage == -1) return 0; |
3170 | entry = findEntryByIndex(config, config->defaultImage); |
3171 | if (!entry) return 0; |
3172 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; |
3173 | |
3174 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
3175 | if (!line) return 0; |
3176 | |
3177 | rootspec = getRootSpecifier(line->elements[1].item); |
3178 | printf("%s%s\n", bootPrefix, line->elements[1].item + |
3179 | ((rootspec != NULL) ? strlen(rootspec) : 0)); |
3180 | |
3181 | return 0; |
3182 | } else if (kernelInfo) |
3183 | return displayInfo(config, kernelInfo, bootPrefix); |
3184 | |
3185 | if (copyDefault) { |
3186 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
3187 | if (!template) return 1; |
3188 | } |
3189 | |
3190 | markRemovedImage(config, removeKernelPath, bootPrefix); |
3191 | markRemovedImage(config, removeMBKernel, bootPrefix); |
3192 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, |
3193 | bootPrefix, flags); |
3194 | setFallbackImage(config, newKernelPath != NULL); |
3195 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
3196 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; |
3197 | if (updateKernelPath && newKernelInitrd) { |
3198 | if (updateInitrd(config, updateKernelPath, bootPrefix, |
3199 | newKernelInitrd)) return 1; |
3200 | } |
3201 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
3202 | newKernelTitle, newKernelArgs, newKernelInitrd, |
3203 | extraInitrds, extraInitrdCount, |
3204 | newMBKernel, newMBKernelArgs)) return 1; |
3205 | |
3206 | |
3207 | if (numEntries(config) == 0) { |
3208 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " |
3209 | "Not writing out new config.\n")); |
3210 | return 1; |
3211 | } |
3212 | |
3213 | if (!outputFile) |
3214 | outputFile = grubConfig; |
3215 | |
3216 | return writeConfig(config, outputFile, bootPrefix); |
3217 | } |