Contents of /tags/mkinitrd-6_1_10/grubby/grubby.c
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Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
Original Path: trunk/mkinitrd-magellan/grubby/grubby.c
File MIME type: text/plain
File size: 76002 byte(s)
Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
Original Path: trunk/mkinitrd-magellan/grubby/grubby.c
File MIME type: text/plain
File size: 76002 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
1 | /* Copyright (C) 2001-2005 Red Hat, Inc. |
2 | |
3 | This program is free software; you can redistribute it and/or |
4 | modify it under the terms of the General Public License as published |
5 | by the Free Software Foundation; either version 2 of the License, or |
6 | (at your option) any later version. |
7 | |
8 | This program is distributed in the hope that it will be useful, |
9 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
11 | General Public License for more details. |
12 | |
13 | You should have received a copy of the GNU General Public |
14 | License along with this program; if not, write to the Free |
15 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
16 | 02111-1307 USA. */ |
17 | |
18 | #include <ctype.h> |
19 | #include <errno.h> |
20 | #include <fcntl.h> |
21 | #include <mntent.h> |
22 | #include <popt.h> |
23 | #include <stdarg.h> |
24 | #include <stdlib.h> |
25 | #include <string.h> |
26 | #include <sys/stat.h> |
27 | #include <unistd.h> |
28 | |
29 | #include "mount_by_label.h" |
30 | |
31 | #define _(A) (A) |
32 | |
33 | #define CODE_SEG_SIZE 128 /* code segment checked by --bootloader-probe */ |
34 | |
35 | /* comments get lumped in with indention */ |
36 | struct lineElement { |
37 | char * item; |
38 | char * indent; |
39 | }; |
40 | |
41 | enum lineType_e { LT_WHITESPACE, LT_TITLE, LT_KERNEL, LT_INITRD, LT_DEFAULT, |
42 | LT_UNKNOWN, LT_ROOT, LT_FALLBACK, LT_KERNELARGS, LT_BOOT, |
43 | LT_BOOTROOT, LT_LBA, LT_MBMODULE, LT_OTHER, LT_GENERIC }; |
44 | |
45 | struct singleLine { |
46 | char * indent; |
47 | int numElements; |
48 | struct lineElement * elements; |
49 | struct singleLine * next; |
50 | enum lineType_e type; |
51 | }; |
52 | |
53 | struct singleEntry { |
54 | struct singleLine * lines; |
55 | int skip; |
56 | int multiboot; |
57 | struct singleEntry * next; |
58 | }; |
59 | |
60 | #define GRUBBY_BADIMAGE_OKAY (1 << 0) |
61 | |
62 | #define GRUB_CONFIG_NO_DEFAULT (1 << 0) /* don't write out default=0 */ |
63 | |
64 | #define KERNEL_KERNEL (1 << 0) |
65 | #define KERNEL_INITRD (1 << 2) |
66 | #define KERNEL_TITLE (1 << 3) |
67 | #define KERNEL_ARGS (1 << 4) |
68 | #define KERNEL_MB (1 << 5) |
69 | |
70 | #define MAIN_DEFAULT (1 << 0) |
71 | #define DEFAULT_SAVED -2 |
72 | |
73 | struct keywordTypes { |
74 | char * key; |
75 | enum lineType_e type; |
76 | char nextChar; |
77 | } ; |
78 | |
79 | struct configFileInfo { |
80 | char * defaultConfig; |
81 | struct keywordTypes * keywords; |
82 | int defaultIsIndex; |
83 | int defaultSupportSaved; |
84 | enum lineType_e entrySeparator; |
85 | int needsBootPrefix; |
86 | int argsInQuotes; |
87 | int maxTitleLength; |
88 | int titleBracketed; |
89 | }; |
90 | |
91 | struct keywordTypes grubKeywords[] = { |
92 | { "title", LT_TITLE, ' ' }, |
93 | { "root", LT_BOOTROOT, ' ' }, |
94 | { "default", LT_DEFAULT, ' ' }, |
95 | { "fallback", LT_FALLBACK, ' ' }, |
96 | { "kernel", LT_KERNEL, ' ' }, |
97 | { "initrd", LT_INITRD, ' ' }, |
98 | { "module", LT_MBMODULE, ' ' }, |
99 | { NULL, 0, 0 }, |
100 | }; |
101 | |
102 | struct configFileInfo grubConfigType = { |
103 | "/boot/grub/grub.conf", /* defaultConfig */ |
104 | grubKeywords, /* keywords */ |
105 | 1, /* defaultIsIndex */ |
106 | 1, /* defaultSupportSaved */ |
107 | LT_TITLE, /* entrySeparator */ |
108 | 1, /* needsBootPrefix */ |
109 | 0, /* argsInQuotes */ |
110 | 0, /* maxTitleLength */ |
111 | 0, /* titleBracketed */ |
112 | }; |
113 | |
114 | struct keywordTypes yabootKeywords[] = { |
115 | { "label", LT_TITLE, '=' }, |
116 | { "root", LT_ROOT, '=' }, |
117 | { "default", LT_DEFAULT, '=' }, |
118 | { "image", LT_KERNEL, '=' }, |
119 | { "bsd", LT_GENERIC, '=' }, |
120 | { "macos", LT_GENERIC, '=' }, |
121 | { "macosx", LT_GENERIC, '=' }, |
122 | { "magicboot", LT_GENERIC, '=' }, |
123 | { "darwin", LT_GENERIC, '=' }, |
124 | { "timeout", LT_GENERIC, '=' }, |
125 | { "install", LT_GENERIC, '=' }, |
126 | { "fstype", LT_GENERIC, '=' }, |
127 | { "hfstype", LT_GENERIC, '=' }, |
128 | { "delay", LT_GENERIC, '=' }, |
129 | { "defaultos", LT_GENERIC, '=' }, |
130 | { "init-message", LT_GENERIC, '=' }, |
131 | { "enablecdboot", LT_GENERIC, ' ' }, |
132 | { "enableofboot", LT_GENERIC, ' ' }, |
133 | { "enablenetboot", LT_GENERIC, ' ' }, |
134 | { "nonvram", LT_GENERIC, ' ' }, |
135 | { "hide", LT_GENERIC, ' ' }, |
136 | { "protect", LT_GENERIC, ' ' }, |
137 | { "nobless", LT_GENERIC, ' ' }, |
138 | { "nonvram", LT_GENERIC, ' ' }, |
139 | { "brokenosx", LT_GENERIC, ' ' }, |
140 | { "usemount", LT_GENERIC, ' ' }, |
141 | { "mntpoint", LT_GENERIC, '=' }, |
142 | { "partition", LT_GENERIC, '=' }, |
143 | { "device", LT_GENERIC, '=' }, |
144 | { "fstype", LT_GENERIC, '=' }, |
145 | { "initrd", LT_INITRD, '=' }, |
146 | { "append", LT_KERNELARGS, '=' }, |
147 | { "boot", LT_BOOT, '=' }, |
148 | { "lba", LT_LBA, ' ' }, |
149 | { NULL, 0, 0 }, |
150 | }; |
151 | |
152 | struct keywordTypes liloKeywords[] = { |
153 | { "label", LT_TITLE, '=' }, |
154 | { "root", LT_ROOT, '=' }, |
155 | { "default", LT_DEFAULT, '=' }, |
156 | { "image", LT_KERNEL, '=' }, |
157 | { "other", LT_OTHER, '=' }, |
158 | { "initrd", LT_INITRD, '=' }, |
159 | { "append", LT_KERNELARGS, '=' }, |
160 | { "boot", LT_BOOT, '=' }, |
161 | { "lba", LT_LBA, ' ' }, |
162 | { NULL, 0, 0 }, |
163 | }; |
164 | |
165 | struct keywordTypes siloKeywords[] = { |
166 | { "label", LT_TITLE, '=' }, |
167 | { "root", LT_ROOT, '=' }, |
168 | { "default", LT_DEFAULT, '=' }, |
169 | { "image", LT_KERNEL, '=' }, |
170 | { "other", LT_OTHER, '=' }, |
171 | { "initrd", LT_INITRD, '=' }, |
172 | { "append", LT_KERNELARGS, '=' }, |
173 | { "boot", LT_BOOT, '=' }, |
174 | { NULL, 0, 0 }, |
175 | }; |
176 | |
177 | struct keywordTypes ziplKeywords[] = { |
178 | { "target", LT_BOOTROOT, '=' }, |
179 | { "image", LT_KERNEL, '=' }, |
180 | { "ramdisk", LT_INITRD, '=' }, |
181 | { "parameters", LT_KERNELARGS, '=' }, |
182 | { "default", LT_DEFAULT, '=' }, |
183 | { NULL, 0, 0 }, |
184 | }; |
185 | |
186 | struct configFileInfo eliloConfigType = { |
187 | "/boot/efi/EFI/redhat/elilo.conf", /* defaultConfig */ |
188 | liloKeywords, /* keywords */ |
189 | 0, /* defaultIsIndex */ |
190 | 0, /* defaultSupportSaved */ |
191 | LT_KERNEL, /* entrySeparator */ |
192 | 1, /* needsBootPrefix */ |
193 | 1, /* argsInQuotes */ |
194 | 0, /* maxTitleLength */ |
195 | 0, /* titleBracketed */ |
196 | }; |
197 | |
198 | struct configFileInfo liloConfigType = { |
199 | "/etc/lilo.conf", /* defaultConfig */ |
200 | liloKeywords, /* keywords */ |
201 | 0, /* defaultIsIndex */ |
202 | 0, /* defaultSupportSaved */ |
203 | LT_KERNEL, /* entrySeparator */ |
204 | 0, /* needsBootPrefix */ |
205 | 1, /* argsInQuotes */ |
206 | 15, /* maxTitleLength */ |
207 | 0, /* titleBracketed */ |
208 | }; |
209 | |
210 | struct configFileInfo yabootConfigType = { |
211 | "/etc/yaboot.conf", /* defaultConfig */ |
212 | yabootKeywords, /* keywords */ |
213 | 0, /* defaultIsIndex */ |
214 | 0, /* defaultSupportSaved */ |
215 | LT_KERNEL, /* entrySeparator */ |
216 | 1, /* needsBootPrefix */ |
217 | 1, /* argsInQuotes */ |
218 | 15, /* maxTitleLength */ |
219 | 0, /* titleBracketed */ |
220 | }; |
221 | |
222 | struct configFileInfo siloConfigType = { |
223 | "/etc/silo.conf", /* defaultConfig */ |
224 | siloKeywords, /* keywords */ |
225 | 0, /* defaultIsIndex */ |
226 | 0, /* defaultSupportSaved */ |
227 | LT_KERNEL, /* entrySeparator */ |
228 | 1, /* needsBootPrefix */ |
229 | 1, /* argsInQuotes */ |
230 | 15, /* maxTitleLength */ |
231 | 0, /* titleBracketed */ |
232 | }; |
233 | |
234 | struct configFileInfo ziplConfigType = { |
235 | "/etc/zipl.conf", /* defaultConfig */ |
236 | ziplKeywords, /* keywords */ |
237 | 0, /* defaultIsIndex */ |
238 | 0, /* defaultSupportSaved */ |
239 | LT_TITLE, /* entrySeparator */ |
240 | 0, /* needsBootPrefix */ |
241 | 1, /* argsInQuotes */ |
242 | 15, /* maxTitleLength */ |
243 | 1, /* titleBracketed */ |
244 | }; |
245 | |
246 | struct grubConfig { |
247 | struct singleLine * theLines; |
248 | struct singleEntry * entries; |
249 | char * primaryIndent; |
250 | char * secondaryIndent; |
251 | int defaultImage; /* -1 if none specified -- this value is |
252 | * written out, overriding original */ |
253 | int fallbackImage; /* just like defaultImage */ |
254 | int flags; |
255 | struct configFileInfo * cfi; |
256 | }; |
257 | |
258 | |
259 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); |
260 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, |
261 | const char * path, const char * prefix, |
262 | int * index); |
263 | static char * strndup(char * from, int len); |
264 | static int readFile(int fd, char ** bufPtr); |
265 | static void lineInit(struct singleLine * line); |
266 | static void lineFree(struct singleLine * line); |
267 | static int lineWrite(FILE * out, struct singleLine * line, |
268 | struct configFileInfo * cfi); |
269 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
270 | struct configFileInfo * cfi); |
271 | static char * getRootSpecifier(char * str); |
272 | |
273 | static char * strndup(char * from, int len) { |
274 | char * to; |
275 | |
276 | to = malloc(len + 1); |
277 | strncpy(to, from, len); |
278 | to[len] = '\0'; |
279 | |
280 | return to; |
281 | } |
282 | |
283 | static char * sdupprintf(const char *format, ...) |
284 | #ifdef __GNUC__ |
285 | __attribute__ ((format (printf, 1, 2))); |
286 | #else |
287 | ; |
288 | #endif |
289 | |
290 | static char * sdupprintf(const char *format, ...) { |
291 | char *buf = NULL; |
292 | char c; |
293 | va_list args; |
294 | size_t size = 0; |
295 | va_start(args, format); |
296 | |
297 | /* XXX requires C99 vsnprintf behavior */ |
298 | size = vsnprintf(&c, 1, format, args) + 1; |
299 | if (size == -1) { |
300 | printf("ERROR: vsnprintf behavior is not C99\n"); |
301 | abort(); |
302 | } |
303 | |
304 | va_end(args); |
305 | va_start(args, format); |
306 | |
307 | buf = malloc(size); |
308 | if (buf == NULL) |
309 | return NULL; |
310 | vsnprintf(buf, size, format, args); |
311 | va_end (args); |
312 | |
313 | return buf; |
314 | } |
315 | |
316 | static int isBracketedTitle(struct singleLine * line) { |
317 | if ((*line->elements[0].item == '[') && (line->numElements == 1)) { |
318 | int len = strlen(line->elements[0].item); |
319 | if (*(line->elements[0].item + len - 1) == ']') { |
320 | /* FIXME: this is a hack... */ |
321 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
322 | return 1; |
323 | } |
324 | } |
325 | } |
326 | return 0; |
327 | } |
328 | |
329 | /* figure out if this is a entry separator */ |
330 | static int isEntrySeparator(struct singleLine * line, |
331 | struct configFileInfo * cfi) { |
332 | if (line->type == LT_WHITESPACE) |
333 | return 0; |
334 | if (line->type == cfi->entrySeparator) |
335 | return 1; |
336 | if (line->type == LT_OTHER) |
337 | return 1; |
338 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
339 | return 1; |
340 | } |
341 | return 0; |
342 | } |
343 | |
344 | /* extract the title from within brackets (for zipl) */ |
345 | static char * extractTitle(struct singleLine * line) { |
346 | /* bracketed title... let's extract it (leaks a byte) */ |
347 | char * title; |
348 | title = strdup(line->elements[0].item); |
349 | title++; |
350 | *(title + strlen(title) - 1) = '\0'; |
351 | return title; |
352 | } |
353 | |
354 | static int readFile(int fd, char ** bufPtr) { |
355 | int alloced = 0, size = 0, i = 0; |
356 | char * buf = NULL; |
357 | |
358 | do { |
359 | size += i; |
360 | if ((size + 1024) > alloced) { |
361 | alloced += 4096; |
362 | buf = realloc(buf, alloced + 1); |
363 | } |
364 | } while ((i = read(fd, buf + size, 1024)) > 0); |
365 | |
366 | if (i < 0) { |
367 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); |
368 | free(buf); |
369 | return 1; |
370 | } |
371 | |
372 | buf = realloc(buf, size + 2); |
373 | if (size == 0) |
374 | buf[size++] = '\n'; |
375 | else |
376 | if (buf[size - 1] != '\n') |
377 | buf[size++] = '\n'; |
378 | buf[size] = '\0'; |
379 | |
380 | *bufPtr = buf; |
381 | |
382 | return 0; |
383 | } |
384 | |
385 | static void lineInit(struct singleLine * line) { |
386 | line->indent = NULL; |
387 | line->elements = NULL; |
388 | line->numElements = 0; |
389 | line->next = NULL; |
390 | } |
391 | |
392 | static void lineFree(struct singleLine * line) { |
393 | int i; |
394 | |
395 | if (line->indent) free(line->indent); |
396 | |
397 | for (i = 0; i < line->numElements; i++) { |
398 | free(line->elements[i].item); |
399 | free(line->elements[i].indent); |
400 | } |
401 | |
402 | if (line->elements) free(line->elements); |
403 | lineInit(line); |
404 | } |
405 | |
406 | static int lineWrite(FILE * out, struct singleLine * line, |
407 | struct configFileInfo * cfi) { |
408 | int i; |
409 | |
410 | if (fprintf(out, "%s", line->indent) == -1) return -1; |
411 | |
412 | for (i = 0; i < line->numElements; i++) { |
413 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
414 | if (fputc('"', out) == EOF) return -1; |
415 | |
416 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; |
417 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; |
418 | } |
419 | |
420 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
421 | if (fputc('"', out) == EOF) return -1; |
422 | |
423 | if (fprintf(out, "\n") == -1) return -1; |
424 | |
425 | return 0; |
426 | } |
427 | |
428 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
429 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
430 | struct configFileInfo * cfi) { |
431 | char * end; |
432 | char * start = *bufPtr; |
433 | char * chptr; |
434 | int elementsAlloced = 0; |
435 | struct lineElement * element; |
436 | struct keywordTypes * keywords = cfi->keywords; |
437 | int first = 1; |
438 | int i; |
439 | |
440 | lineFree(line); |
441 | |
442 | end = strchr(start, '\n'); |
443 | *end = '\0'; |
444 | *bufPtr = end + 1; |
445 | |
446 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
447 | |
448 | line->indent = strndup(start, chptr - start); |
449 | start = chptr; |
450 | |
451 | while (start < end) { |
452 | /* we know !isspace(*start) */ |
453 | |
454 | if (elementsAlloced == line->numElements) { |
455 | elementsAlloced += 5; |
456 | line->elements = realloc(line->elements, |
457 | sizeof(*line->elements) * elementsAlloced); |
458 | } |
459 | |
460 | element = line->elements + line->numElements; |
461 | |
462 | chptr = start; |
463 | while (*chptr && !isspace(*chptr)) { |
464 | if (first && *chptr == '=') break; |
465 | chptr++; |
466 | } |
467 | element->item = strndup(start, chptr - start); |
468 | start = chptr; |
469 | |
470 | /* lilo actually accepts the pathological case of append = " foo " */ |
471 | if (*start == '=') |
472 | chptr = start + 1; |
473 | else |
474 | chptr = start; |
475 | |
476 | do { |
477 | for (; *chptr && isspace(*chptr); chptr++); |
478 | if (*chptr == '=') |
479 | chptr = chptr + 1; |
480 | } while (isspace(*chptr)); |
481 | |
482 | element->indent = strndup(start, chptr - start); |
483 | start = chptr; |
484 | |
485 | line->numElements++; |
486 | first = 0; |
487 | } |
488 | |
489 | if (!line->numElements) |
490 | line->type = LT_WHITESPACE; |
491 | else { |
492 | for (i = 0; keywords[i].key; i++) |
493 | if (!strcmp(line->elements[0].item, keywords[i].key)) break; |
494 | |
495 | if (keywords[i].key) { |
496 | line->type = keywords[i].type; |
497 | } else { |
498 | line->type = LT_UNKNOWN; |
499 | |
500 | /* zipl does [title] instead of something reasonable like all |
501 | * the other boot loaders. kind of ugly */ |
502 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
503 | line->type = LT_TITLE; |
504 | } |
505 | |
506 | /* this is awkward, but we need to be able to handle keywords |
507 | that begin with a # (specifically for #boot in grub.conf), |
508 | but still make comments lines with no elements (everything |
509 | stored in the indent */ |
510 | if (*line->elements[0].item == '#') { |
511 | char * fullLine; |
512 | int len; |
513 | int i; |
514 | |
515 | len = strlen(line->indent); |
516 | for (i = 0; i < line->numElements; i++) |
517 | len += strlen(line->elements[i].item) + |
518 | strlen(line->elements[i].indent); |
519 | |
520 | fullLine = malloc(len + 1); |
521 | strcpy(fullLine, line->indent); |
522 | free(line->indent); |
523 | line->indent = fullLine; |
524 | |
525 | for (i = 0; i < line->numElements; i++) { |
526 | strcat(fullLine, line->elements[i].item); |
527 | strcat(fullLine, line->elements[i].indent); |
528 | free(line->elements[i].item); |
529 | free(line->elements[i].indent); |
530 | } |
531 | |
532 | line->type = LT_WHITESPACE; |
533 | line->numElements = 0; |
534 | } |
535 | } |
536 | } |
537 | |
538 | return 0; |
539 | } |
540 | |
541 | static struct grubConfig * readConfig(const char * inName, |
542 | struct configFileInfo * cfi) { |
543 | int in; |
544 | char * incoming = NULL, * head; |
545 | int rc; |
546 | int sawEntry = 0; |
547 | int movedLine = 0; |
548 | struct grubConfig * cfg; |
549 | struct singleLine * last = NULL, * line, * defaultLine = NULL; |
550 | char * end; |
551 | struct singleEntry * entry = NULL; |
552 | int i, len; |
553 | char * buf; |
554 | |
555 | if (!strcmp(inName, "-")) { |
556 | in = 0; |
557 | } else { |
558 | if ((in = open(inName, O_RDONLY)) < 0) { |
559 | fprintf(stderr, _("error opening %s for read: %s\n"), |
560 | inName, strerror(errno)); |
561 | return NULL; |
562 | } |
563 | } |
564 | |
565 | rc = readFile(in, &incoming); |
566 | close(in); |
567 | if (rc) return NULL; |
568 | |
569 | head = incoming; |
570 | cfg = malloc(sizeof(*cfg)); |
571 | cfg->primaryIndent = strdup(""); |
572 | cfg->secondaryIndent = strdup("\t"); |
573 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
574 | cfg->cfi = cfi; |
575 | cfg->theLines = NULL; |
576 | cfg->entries = NULL; |
577 | cfg->fallbackImage = 0; |
578 | |
579 | /* copy everything we have */ |
580 | while (*head) { |
581 | line = malloc(sizeof(*line)); |
582 | lineInit(line); |
583 | |
584 | if (getNextLine(&head, line, cfi)) { |
585 | free(line); |
586 | /* XXX memory leak of everything in cfg */ |
587 | return NULL; |
588 | } |
589 | |
590 | if (!sawEntry && line->numElements) { |
591 | free(cfg->primaryIndent); |
592 | cfg->primaryIndent = strdup(line->indent); |
593 | } else if (line->numElements) { |
594 | free(cfg->secondaryIndent); |
595 | cfg->secondaryIndent = strdup(line->indent); |
596 | } |
597 | |
598 | if (isEntrySeparator(line, cfi)) { |
599 | sawEntry = 1; |
600 | if (!entry) { |
601 | cfg->entries = malloc(sizeof(*entry)); |
602 | entry = cfg->entries; |
603 | } else { |
604 | entry->next = malloc(sizeof(*entry)); |
605 | entry = entry->next; |
606 | } |
607 | |
608 | entry->skip = 0; |
609 | entry->multiboot = 0; |
610 | entry->lines = NULL; |
611 | entry->next = NULL; |
612 | } |
613 | |
614 | if (line->type == LT_DEFAULT && line->numElements == 2) { |
615 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
616 | defaultLine = line; |
617 | } else if (line->type == LT_MBMODULE) { |
618 | entry->multiboot = 1; |
619 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
620 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); |
621 | if (*end) cfg->fallbackImage = -1; |
622 | } else if (line->type == LT_TITLE && line->numElements > 1) { |
623 | /* make the title a single argument (undoing our parsing) */ |
624 | len = 0; |
625 | for (i = 1; i < line->numElements; i++) { |
626 | len += strlen(line->elements[i].item); |
627 | len += strlen(line->elements[i].indent); |
628 | } |
629 | buf = malloc(len + 1); |
630 | *buf = '\0'; |
631 | |
632 | for (i = 1; i < line->numElements; i++) { |
633 | strcat(buf, line->elements[i].item); |
634 | free(line->elements[i].item); |
635 | |
636 | if ((i + 1) != line->numElements) { |
637 | strcat(buf, line->elements[i].indent); |
638 | free(line->elements[i].indent); |
639 | } |
640 | } |
641 | |
642 | line->elements[1].indent = |
643 | line->elements[line->numElements - 1].indent; |
644 | line->elements[1].item = buf; |
645 | line->numElements = 2; |
646 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
647 | /* Strip off any " which may be present; they'll be put back |
648 | on write. This is one of the few (the only?) places that grubby |
649 | canonicalizes the output */ |
650 | |
651 | if (line->numElements >= 2) { |
652 | int last, len; |
653 | |
654 | if (*line->elements[1].item == '"') |
655 | memcpy(line->elements[1].item, line->elements[1].item + 1, |
656 | strlen(line->elements[1].item + 1) + 1); |
657 | |
658 | last = line->numElements - 1; |
659 | len = strlen(line->elements[last].item) - 1; |
660 | if (line->elements[last].item[len] == '"') |
661 | line->elements[last].item[len] = '\0'; |
662 | } |
663 | |
664 | } |
665 | |
666 | /* If we find a generic config option which should live at the |
667 | top of the file, move it there. Old versions of grubby were |
668 | probably responsible for putting new images in the wrong |
669 | place in front of it anyway. */ |
670 | if (sawEntry && line->type == LT_GENERIC) { |
671 | struct singleLine **l = &cfg->theLines; |
672 | struct singleLine **last_nonws = &cfg->theLines; |
673 | while (*l) { |
674 | if ((*l)->type != LT_WHITESPACE) |
675 | last_nonws = &((*l)->next); |
676 | l = &((*l)->next); |
677 | } |
678 | line->next = *last_nonws; |
679 | *last_nonws = line; |
680 | movedLine = 1; |
681 | continue; /* without setting 'last' */ |
682 | } |
683 | /* If a second line of whitespace happens after a generic option |
684 | which was moved, drop it. */ |
685 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { |
686 | lineFree(line); |
687 | free(line); |
688 | movedLine = 0; |
689 | continue; |
690 | } |
691 | movedLine = 0; |
692 | |
693 | if (sawEntry) { |
694 | if (!entry->lines) |
695 | entry->lines = line; |
696 | else |
697 | last->next = line; |
698 | } else { |
699 | if (!cfg->theLines) |
700 | cfg->theLines = line; |
701 | else { |
702 | last->next = line; |
703 | } |
704 | } |
705 | |
706 | last = line; |
707 | } |
708 | |
709 | free(incoming); |
710 | |
711 | if (defaultLine) { |
712 | if (cfi->defaultSupportSaved && |
713 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { |
714 | cfg->defaultImage = DEFAULT_SAVED; |
715 | } else if (cfi->defaultIsIndex) { |
716 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); |
717 | if (*end) cfg->defaultImage = -1; |
718 | } else if (defaultLine->numElements >= 2) { |
719 | i = 0; |
720 | while ((entry = findEntryByIndex(cfg, i))) { |
721 | for (line = entry->lines; line; line = line->next) |
722 | if (line->type == LT_TITLE) break; |
723 | |
724 | if (!cfi->titleBracketed) { |
725 | if (line && (line->numElements >= 2) && |
726 | !strcmp(defaultLine->elements[1].item, |
727 | line->elements[1].item)) break; |
728 | } else if (line) { |
729 | if (!strcmp(defaultLine->elements[1].item, |
730 | extractTitle(line))) break; |
731 | } |
732 | i++; |
733 | } |
734 | |
735 | if (entry) cfg->defaultImage = i; |
736 | } |
737 | } |
738 | |
739 | return cfg; |
740 | } |
741 | |
742 | static void writeDefault(FILE * out, char * indent, |
743 | char * separator, struct grubConfig * cfg) { |
744 | struct singleEntry * entry; |
745 | struct singleLine * line; |
746 | int i; |
747 | |
748 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; |
749 | |
750 | if (cfg->defaultImage == DEFAULT_SAVED) |
751 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
752 | else if (cfg->defaultImage > -1) { |
753 | if (cfg->cfi->defaultIsIndex) { |
754 | fprintf(out, "%sdefault%s%d\n", indent, separator, |
755 | cfg->defaultImage); |
756 | } else { |
757 | int image = cfg->defaultImage; |
758 | |
759 | entry = cfg->entries; |
760 | while (entry && entry->skip) entry = entry->next; |
761 | |
762 | i = 0; |
763 | while (entry && i < image) { |
764 | entry = entry->next; |
765 | |
766 | while (entry && entry->skip) entry = entry->next; |
767 | i++; |
768 | } |
769 | |
770 | if (!entry) return; |
771 | |
772 | line = entry->lines; |
773 | while (line && line->type != LT_TITLE) line = line->next; |
774 | |
775 | if (line && line->numElements >= 2) |
776 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
777 | line->elements[1].item); |
778 | else if (line && (line->numElements == 1) && |
779 | cfg->cfi->titleBracketed) { |
780 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
781 | extractTitle(line)); |
782 | } |
783 | } |
784 | } |
785 | } |
786 | |
787 | static int writeConfig(struct grubConfig * cfg, char * outName, |
788 | const char * prefix) { |
789 | FILE * out; |
790 | struct singleLine * line; |
791 | struct singleEntry * entry; |
792 | char * tmpOutName; |
793 | int needs = MAIN_DEFAULT; |
794 | struct stat sb; |
795 | int i; |
796 | |
797 | if (!strcmp(outName, "-")) { |
798 | out = stdout; |
799 | tmpOutName = NULL; |
800 | } else { |
801 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
802 | char * buf; |
803 | int len = 256; |
804 | int rc; |
805 | |
806 | /* most likely the symlink is relative, so change our |
807 | directory to / */ |
808 | rc = chdir("/"); |
809 | do { |
810 | buf = alloca(len + 1); |
811 | rc = readlink(outName, buf, len); |
812 | if (rc == len) len += 256; |
813 | } while (rc == len); |
814 | |
815 | if (rc < 0) { |
816 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), |
817 | outName, strerror(errno)); |
818 | return 1; |
819 | } |
820 | |
821 | outName = buf; |
822 | outName[rc] = '\0'; |
823 | } |
824 | |
825 | tmpOutName = alloca(strlen(outName) + 2); |
826 | sprintf(tmpOutName, "%s-", outName); |
827 | out = fopen(tmpOutName, "w"); |
828 | if (!out) { |
829 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, |
830 | strerror(errno)); |
831 | return 1; |
832 | } |
833 | |
834 | if (!stat(outName, &sb)) { |
835 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
836 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), |
837 | tmpOutName, strerror(errno)); |
838 | fclose(out); |
839 | unlink(tmpOutName); |
840 | return 1; |
841 | } |
842 | } |
843 | } |
844 | |
845 | line = cfg->theLines; |
846 | while (line) { |
847 | if (line->type == LT_DEFAULT) { |
848 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
849 | needs &= ~MAIN_DEFAULT; |
850 | } else if (line->type == LT_FALLBACK) { |
851 | if (cfg->fallbackImage > -1) |
852 | fprintf(out, "%s%s%s%d\n", line->indent, |
853 | line->elements[0].item, line->elements[0].indent, |
854 | cfg->fallbackImage); |
855 | } else { |
856 | if (lineWrite(out, line, cfg->cfi) == -1) { |
857 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
858 | tmpOutName, strerror(errno)); |
859 | fclose(out); |
860 | unlink(tmpOutName); |
861 | return 1; |
862 | } |
863 | } |
864 | |
865 | line = line->next; |
866 | } |
867 | |
868 | if (needs & MAIN_DEFAULT) { |
869 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
870 | needs &= ~MAIN_DEFAULT; |
871 | } |
872 | |
873 | i = 0; |
874 | while ((entry = findEntryByIndex(cfg, i++))) { |
875 | if (entry->skip) continue; |
876 | |
877 | line = entry->lines; |
878 | while (line) { |
879 | if (lineWrite(out, line, cfg->cfi) == -1) { |
880 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
881 | tmpOutName, strerror(errno)); |
882 | fclose(out); |
883 | unlink(tmpOutName); |
884 | return 1; |
885 | } |
886 | line = line->next; |
887 | } |
888 | } |
889 | |
890 | if (tmpOutName) { |
891 | if (rename(tmpOutName, outName)) { |
892 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), |
893 | tmpOutName, outName, strerror(errno)); |
894 | unlink(outName); |
895 | return 1; |
896 | } |
897 | } |
898 | |
899 | return 0; |
900 | } |
901 | |
902 | static int numEntries(struct grubConfig *cfg) { |
903 | int i = 0; |
904 | struct singleEntry * entry; |
905 | |
906 | entry = cfg->entries; |
907 | while (entry) { |
908 | if (!entry->skip) |
909 | i++; |
910 | entry = entry->next; |
911 | } |
912 | return i; |
913 | } |
914 | |
915 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, |
916 | int skipRemoved, int flags) { |
917 | struct singleLine * line; |
918 | char * fullName; |
919 | int i; |
920 | struct stat sb, sb2; |
921 | char * dev; |
922 | char * end; |
923 | char * rootspec; |
924 | |
925 | line = entry->lines; |
926 | while (line && line->type != LT_KERNEL) line = line->next; |
927 | |
928 | if (!line) return 0; |
929 | if (skipRemoved && entry->skip) return 0; |
930 | if (line->numElements < 2) return 0; |
931 | |
932 | if (flags & GRUBBY_BADIMAGE_OKAY) return 1; |
933 | |
934 | fullName = alloca(strlen(bootPrefix) + |
935 | strlen(line->elements[1].item) + 1); |
936 | rootspec = getRootSpecifier(line->elements[1].item); |
937 | sprintf(fullName, "%s%s", bootPrefix, |
938 | line->elements[1].item + ((rootspec != NULL) ? |
939 | strlen(rootspec) : 0)); |
940 | if (access(fullName, R_OK)) return 0; |
941 | |
942 | for (i = 2; i < line->numElements; i++) |
943 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
944 | if (i < line->numElements) { |
945 | dev = line->elements[i].item + 5; |
946 | } else { |
947 | /* look for a lilo style LT_ROOT line */ |
948 | line = entry->lines; |
949 | while (line && line->type != LT_ROOT) line = line->next; |
950 | |
951 | if (line && line->numElements >= 2) { |
952 | dev = line->elements[1].item; |
953 | } else { |
954 | int type; |
955 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS */ |
956 | line = entry->lines; |
957 | |
958 | type = ((entry->multiboot) ? LT_MBMODULE : LT_KERNELARGS); |
959 | |
960 | while (line && line->type != type) line = line->next; |
961 | |
962 | /* failed to find one */ |
963 | if (!line) return 0; |
964 | |
965 | for (i = 1; i < line->numElements; i++) |
966 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
967 | if (i < line->numElements) |
968 | dev = line->elements[i].item + 5; |
969 | else { |
970 | /* it failed too... can't find root= */ |
971 | return 0; |
972 | } |
973 | } |
974 | } |
975 | |
976 | if (!strncmp(dev, "LABEL=", 6)) { |
977 | dev += 6; |
978 | |
979 | /* check which device has this label */ |
980 | dev = get_spec_by_volume_label(dev, &i, &i); |
981 | if (!dev) return 0; |
982 | } |
983 | |
984 | if (*dev == '/') { |
985 | if (stat(dev, &sb)) |
986 | return 0; |
987 | } else { |
988 | sb.st_rdev = strtol(dev, &end, 16); |
989 | if (*end) return 0; |
990 | } |
991 | stat("/", &sb2); |
992 | |
993 | if (sb.st_rdev != sb2.st_dev) return 0; |
994 | |
995 | return 1; |
996 | } |
997 | |
998 | /* returns the first match on or after the one pointed to by index (if index |
999 | is not NULL) which is not marked as skip */ |
1000 | struct singleEntry * findEntryByPath(struct grubConfig * config, |
1001 | const char * kernel, const char * prefix, |
1002 | int * index) { |
1003 | struct singleEntry * entry = NULL; |
1004 | struct singleLine * line; |
1005 | int i; |
1006 | char * chptr; |
1007 | char * rootspec = NULL; |
1008 | enum lineType_e checkType = LT_KERNEL; |
1009 | |
1010 | if (isdigit(*kernel)) { |
1011 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
1012 | |
1013 | i = 0; |
1014 | indexVars[i] = strtol(kernel, &chptr, 10); |
1015 | while (*chptr == ',') { |
1016 | i++; |
1017 | kernel = chptr + 1; |
1018 | indexVars[i] = strtol(kernel, &chptr, 10); |
1019 | } |
1020 | |
1021 | if (*chptr) { |
1022 | /* can't parse it, bail */ |
1023 | return NULL; |
1024 | } |
1025 | |
1026 | indexVars[i + 1] = -1; |
1027 | |
1028 | i = 0; |
1029 | if (index) { |
1030 | while (i < *index) i++; |
1031 | if (indexVars[i] == -1) return NULL; |
1032 | } |
1033 | |
1034 | entry = findEntryByIndex(config, indexVars[i]); |
1035 | if (!entry) return NULL; |
1036 | |
1037 | line = entry->lines; |
1038 | while (line && line->type != LT_KERNEL) |
1039 | line = line->next; |
1040 | |
1041 | if (!line) return NULL; |
1042 | |
1043 | if (index) *index = indexVars[i]; |
1044 | return entry; |
1045 | } |
1046 | |
1047 | if (!strcmp(kernel, "DEFAULT")) { |
1048 | if (index && *index > config->defaultImage) { |
1049 | entry = NULL; |
1050 | } else { |
1051 | entry = findEntryByIndex(config, config->defaultImage); |
1052 | if (entry && entry->skip) |
1053 | entry = NULL; |
1054 | else if (index) |
1055 | *index = config->defaultImage; |
1056 | } |
1057 | } else if (!strcmp(kernel, "ALL")) { |
1058 | if (index) |
1059 | i = *index; |
1060 | else |
1061 | i = 0; |
1062 | |
1063 | while ((entry = findEntryByIndex(config, i))) { |
1064 | if (!entry->skip) break; |
1065 | i++; |
1066 | } |
1067 | |
1068 | if (entry && index) |
1069 | *index = i; |
1070 | } else { |
1071 | if (index) |
1072 | i = *index; |
1073 | else |
1074 | i = 0; |
1075 | |
1076 | if (!strncmp(kernel, "TITLE=", 6)) { |
1077 | prefix = ""; |
1078 | checkType = LT_TITLE; |
1079 | kernel += 6; |
1080 | } |
1081 | |
1082 | while ((entry = findEntryByIndex(config, i))) { |
1083 | line = entry->lines; |
1084 | while (line && line->type != checkType) line=line->next; |
1085 | |
1086 | |
1087 | if (line && line->numElements >= 2 && !entry->skip) { |
1088 | rootspec = getRootSpecifier(line->elements[1].item); |
1089 | if (!strcmp(line->elements[1].item + |
1090 | ((rootspec != NULL) ? strlen(rootspec) : 0), |
1091 | kernel + strlen(prefix))) |
1092 | break; |
1093 | } |
1094 | |
1095 | /* have to check multiboot lines too */ |
1096 | if (entry->multiboot) { |
1097 | while (line && line->type != LT_MBMODULE) line = line->next; |
1098 | if (line && line->numElements >= 2 && !entry->skip) { |
1099 | rootspec = getRootSpecifier(line->elements[1].item); |
1100 | if (!strcmp(line->elements[1].item + |
1101 | ((rootspec != NULL) ? strlen(rootspec) : 0), |
1102 | kernel + strlen(prefix))) |
1103 | break; |
1104 | } |
1105 | } |
1106 | |
1107 | i++; |
1108 | } |
1109 | |
1110 | if (index) *index = i; |
1111 | } |
1112 | |
1113 | if (!entry) return NULL; |
1114 | |
1115 | /* make sure this entry has a kernel identifier; this skips non-Linux |
1116 | boot entries (could find netbsd etc, though, which is unfortunate) */ |
1117 | line = entry->lines; |
1118 | while (line && line->type != LT_KERNEL) line = line->next; |
1119 | if (!line) { |
1120 | if (!index) index = &i; |
1121 | (*index)++; |
1122 | return findEntryByPath(config, kernel, prefix, index); |
1123 | } |
1124 | |
1125 | return entry; |
1126 | } |
1127 | |
1128 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { |
1129 | struct singleEntry * entry; |
1130 | |
1131 | entry = cfg->entries; |
1132 | while (index && entry) { |
1133 | entry = entry->next; |
1134 | index--; |
1135 | } |
1136 | |
1137 | return entry; |
1138 | } |
1139 | |
1140 | /* Find a good template to use for the new kernel. An entry is |
1141 | * good if the kernel and mkinitrd exist (even if the entry |
1142 | * is going to be removed). Try and use the default entry, but |
1143 | * if that doesn't work just take the first. If we can't find one, |
1144 | * bail. */ |
1145 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, |
1146 | int * indexPtr, int skipRemoved, int flags) { |
1147 | struct singleEntry * entry, * entry2; |
1148 | int index; |
1149 | |
1150 | if (cfg->defaultImage > -1) { |
1151 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
1152 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
1153 | if (indexPtr) *indexPtr = cfg->defaultImage; |
1154 | return entry; |
1155 | } |
1156 | } |
1157 | |
1158 | index = 0; |
1159 | while ((entry = findEntryByIndex(cfg, index))) { |
1160 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
1161 | int j; |
1162 | for (j = 0; j < index; j++) { |
1163 | entry2 = findEntryByIndex(cfg, j); |
1164 | if (entry2->skip) index--; |
1165 | } |
1166 | if (indexPtr) *indexPtr = index; |
1167 | |
1168 | return entry; |
1169 | } |
1170 | |
1171 | index++; |
1172 | } |
1173 | |
1174 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); |
1175 | |
1176 | return NULL; |
1177 | } |
1178 | |
1179 | char * findBootPrefix(void) { |
1180 | struct stat sb, sb2; |
1181 | |
1182 | stat("/", &sb); |
1183 | #ifdef __ia64__ |
1184 | stat("/boot/efi/EFI/redhat/", &sb2); |
1185 | #else |
1186 | stat("/boot", &sb2); |
1187 | #endif |
1188 | |
1189 | if (sb.st_dev == sb2.st_dev) |
1190 | return strdup(""); |
1191 | |
1192 | #ifdef __ia64__ |
1193 | return strdup("/boot/efi/EFI/redhat/"); |
1194 | #else |
1195 | return strdup("/boot"); |
1196 | #endif |
1197 | } |
1198 | |
1199 | void markRemovedImage(struct grubConfig * cfg, const char * image, |
1200 | const char * prefix) { |
1201 | struct singleEntry * entry; |
1202 | |
1203 | if (!image) return; |
1204 | |
1205 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
1206 | entry->skip = 1; |
1207 | } |
1208 | |
1209 | void setDefaultImage(struct grubConfig * config, int hasNew, |
1210 | const char * defaultKernelPath, int newIsDefault, |
1211 | const char * prefix, int flags) { |
1212 | struct singleEntry * entry, * entry2, * newDefault; |
1213 | int i, j; |
1214 | |
1215 | if (newIsDefault) { |
1216 | config->defaultImage = 0; |
1217 | return; |
1218 | } else if (defaultKernelPath) { |
1219 | i = 0; |
1220 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { |
1221 | config->defaultImage = i; |
1222 | } else { |
1223 | config->defaultImage = -1; |
1224 | return; |
1225 | } |
1226 | } |
1227 | |
1228 | /* defaultImage now points to what we'd like to use, but before any order |
1229 | changes */ |
1230 | if (config->defaultImage == DEFAULT_SAVED) |
1231 | /* default is set to saved, we don't want to change it */ |
1232 | return; |
1233 | |
1234 | if (config->defaultImage > -1) |
1235 | entry = findEntryByIndex(config, config->defaultImage); |
1236 | else |
1237 | entry = NULL; |
1238 | |
1239 | if (entry && !entry->skip) { |
1240 | /* we can preserve the default */ |
1241 | if (hasNew) |
1242 | config->defaultImage++; |
1243 | |
1244 | /* count the number of entries erased before this one */ |
1245 | for (j = 0; j < config->defaultImage; j++) { |
1246 | entry2 = findEntryByIndex(config, j); |
1247 | if (entry2->skip) config->defaultImage--; |
1248 | } |
1249 | } else if (hasNew) { |
1250 | config->defaultImage = 0; |
1251 | } else { |
1252 | /* Either we just erased the default (or the default line was bad |
1253 | * to begin with) and didn't put a new one in. We'll use the first |
1254 | * valid image. */ |
1255 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, |
1256 | flags); |
1257 | if (!newDefault) |
1258 | config->defaultImage = -1; |
1259 | } |
1260 | } |
1261 | |
1262 | void setFallbackImage(struct grubConfig * config, int hasNew) { |
1263 | struct singleEntry * entry, * entry2; |
1264 | int j; |
1265 | |
1266 | if (config->fallbackImage == -1) return; |
1267 | |
1268 | entry = findEntryByIndex(config, config->fallbackImage); |
1269 | if (!entry || entry->skip) { |
1270 | config->fallbackImage = -1; |
1271 | return; |
1272 | } |
1273 | |
1274 | if (hasNew) |
1275 | config->fallbackImage++; |
1276 | |
1277 | /* count the number of entries erased before this one */ |
1278 | for (j = 0; j < config->fallbackImage; j++) { |
1279 | entry2 = findEntryByIndex(config, j); |
1280 | if (entry2->skip) config->fallbackImage--; |
1281 | } |
1282 | } |
1283 | |
1284 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { |
1285 | struct singleLine * line; |
1286 | char * root = NULL; |
1287 | int i; |
1288 | |
1289 | line = entry->lines; |
1290 | while (line && line->type != LT_KERNEL) line = line->next; |
1291 | |
1292 | printf("index=%d\n", index); |
1293 | |
1294 | printf("kernel=%s\n", line->elements[1].item); |
1295 | |
1296 | if (line->numElements >= 3) { |
1297 | printf("args=\""); |
1298 | i = 2; |
1299 | while (i < line->numElements) { |
1300 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
1301 | root = line->elements[i].item + 5; |
1302 | } else { |
1303 | printf("%s%s", line->elements[i].item, |
1304 | line->elements[i].indent); |
1305 | } |
1306 | |
1307 | i++; |
1308 | } |
1309 | printf("\"\n"); |
1310 | } else { |
1311 | line = entry->lines; |
1312 | while (line && line->type != LT_KERNELARGS) line=line->next; |
1313 | |
1314 | if (line) { |
1315 | char * s; |
1316 | |
1317 | printf("args=\""); |
1318 | i = 1; |
1319 | while (i < line->numElements) { |
1320 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
1321 | root = line->elements[i].item + 5; |
1322 | } else { |
1323 | s = line->elements[i].item; |
1324 | |
1325 | printf("%s%s", s, line->elements[i].indent); |
1326 | } |
1327 | |
1328 | i++; |
1329 | } |
1330 | |
1331 | s = line->elements[i - 1].indent; |
1332 | printf("\"\n"); |
1333 | } |
1334 | } |
1335 | |
1336 | if (!root) { |
1337 | line = entry->lines; |
1338 | while (line && line->type != LT_ROOT) line = line->next; |
1339 | |
1340 | if (line && line->numElements >= 2) |
1341 | root=line->elements[1].item; |
1342 | } |
1343 | |
1344 | if (root) { |
1345 | char * s = alloca(strlen(root) + 1); |
1346 | |
1347 | strcpy(s, root); |
1348 | if (s[strlen(s) - 1] == '"') |
1349 | s[strlen(s) - 1] = '\0'; |
1350 | /* make sure the root doesn't have a trailing " */ |
1351 | printf("root=%s\n", s); |
1352 | } |
1353 | |
1354 | line = entry->lines; |
1355 | while (line && line->type != LT_INITRD) line = line->next; |
1356 | |
1357 | if (line && line->numElements >= 2) { |
1358 | printf("initrd=%s", prefix); |
1359 | for (i = 1; i < line->numElements; i++) |
1360 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
1361 | printf("\n"); |
1362 | } |
1363 | } |
1364 | |
1365 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { |
1366 | FILE * in; |
1367 | char buf[1024]; |
1368 | char * chptr; |
1369 | char * start; |
1370 | char * param; |
1371 | |
1372 | in = fopen("/etc/sysconfig/grub", "r"); |
1373 | if (!in) return 1; |
1374 | |
1375 | if (lbaPtr) *lbaPtr = 0; |
1376 | if (bootPtr) *bootPtr = NULL; |
1377 | |
1378 | while (fgets(buf, sizeof(buf), in)) { |
1379 | start = buf; |
1380 | while (isspace(*start)) start++; |
1381 | if (*start == '#') continue; |
1382 | |
1383 | chptr = strchr(start, '='); |
1384 | if (!chptr) continue; |
1385 | chptr--; |
1386 | while (*chptr && isspace(*chptr)) chptr--; |
1387 | chptr++; |
1388 | *chptr = '\0'; |
1389 | |
1390 | param = chptr + 1; |
1391 | while (*param && isspace(*param)) param++; |
1392 | if (*param == '=') { |
1393 | param++; |
1394 | while (*param && isspace(*param)) param++; |
1395 | } |
1396 | |
1397 | chptr = param; |
1398 | while (*chptr && !isspace(*chptr)) chptr++; |
1399 | *chptr = '\0'; |
1400 | |
1401 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
1402 | *lbaPtr = 1; |
1403 | else if (!strcmp(start, "boot") && bootPtr) |
1404 | *bootPtr = strdup(param); |
1405 | } |
1406 | |
1407 | fclose(in); |
1408 | |
1409 | return 0; |
1410 | } |
1411 | |
1412 | void dumpSysconfigGrub(void) { |
1413 | char * boot; |
1414 | int lba; |
1415 | |
1416 | if (!parseSysconfigGrub(&lba, &boot)) { |
1417 | if (lba) printf("lba\n"); |
1418 | if (boot) printf("boot=%s\n", boot); |
1419 | } |
1420 | } |
1421 | |
1422 | int displayInfo(struct grubConfig * config, char * kernel, |
1423 | const char * prefix) { |
1424 | int i = 0; |
1425 | struct singleEntry * entry; |
1426 | struct singleLine * line; |
1427 | |
1428 | entry = findEntryByPath(config, kernel, prefix, &i); |
1429 | if (!entry) { |
1430 | fprintf(stderr, _("grubby: kernel not found\n")); |
1431 | return 1; |
1432 | } |
1433 | |
1434 | /* this is a horrible hack to support /etc/sysconfig/grub; there must |
1435 | be a better way */ |
1436 | if (config->cfi == &grubConfigType) { |
1437 | dumpSysconfigGrub(); |
1438 | } else { |
1439 | line = config->theLines; |
1440 | while (line && line->type != LT_BOOT) line = line->next; |
1441 | if (line && line->numElements >= 1) { |
1442 | printf("boot=%s\n", line->elements[1].item); |
1443 | } |
1444 | |
1445 | line = config->theLines; |
1446 | while (line && line->type != LT_LBA) line = line->next; |
1447 | if (line) printf("lba\n"); |
1448 | } |
1449 | |
1450 | displayEntry(entry, prefix, i); |
1451 | |
1452 | i++; |
1453 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
1454 | displayEntry(entry, prefix, i); |
1455 | i++; |
1456 | } |
1457 | |
1458 | return 0; |
1459 | } |
1460 | |
1461 | /* val may be NULL */ |
1462 | struct singleLine * addLine(struct singleEntry * entry, |
1463 | struct configFileInfo * cfi, |
1464 | enum lineType_e type, const char * defaultIndent, |
1465 | char * val) { |
1466 | struct singleLine * line, * prev; |
1467 | int i; |
1468 | |
1469 | for (i = 0; cfi->keywords[i].key; i++) |
1470 | if (cfi->keywords[i].type == type) break; |
1471 | if (type != LT_TITLE || !cfi->titleBracketed) |
1472 | if (!cfi->keywords[i].key) abort(); |
1473 | |
1474 | /* The last non-empty line gives us the indention to us and the line |
1475 | to insert after. Note that comments are considered empty lines, which |
1476 | may not be ideal? If there are no lines or we are looking at the |
1477 | first line, we use defaultIndent (the first line is normally indented |
1478 | differently from the rest) */ |
1479 | if (entry->lines) { |
1480 | line = entry->lines; |
1481 | prev = NULL; |
1482 | while (line) { |
1483 | if (line->numElements) prev = line; |
1484 | line = line->next; |
1485 | } |
1486 | if (!prev) { |
1487 | /* just use the last line */ |
1488 | prev = entry->lines; |
1489 | while (prev->next) prev = prev->next; |
1490 | } |
1491 | |
1492 | line = prev->next; |
1493 | prev->next = malloc(sizeof(*line)); |
1494 | prev->next->next = line; |
1495 | line = prev->next; |
1496 | |
1497 | if (prev == entry->lines) |
1498 | line->indent = strdup(defaultIndent); |
1499 | else |
1500 | line->indent = strdup(prev->indent); |
1501 | } else { |
1502 | line = malloc(sizeof(*line)); |
1503 | line->indent = strdup(defaultIndent); |
1504 | line->next = NULL; |
1505 | } |
1506 | |
1507 | if (type != LT_TITLE || !cfi->titleBracketed) { |
1508 | line->type = type; |
1509 | line->numElements = val ? 2 : 1; |
1510 | line->elements = malloc(sizeof(*line->elements) * line->numElements); |
1511 | line->elements[0].item = strdup(cfi->keywords[i].key); |
1512 | line->elements[0].indent = malloc(2); |
1513 | line->elements[0].indent[0] = cfi->keywords[i].nextChar; |
1514 | line->elements[0].indent[1] = '\0'; |
1515 | |
1516 | if (val) { |
1517 | line->elements[1].item = val; |
1518 | line->elements[1].indent = strdup(""); |
1519 | } |
1520 | } else { |
1521 | /* we're doing the title of a bracketed title (zipl) */ |
1522 | line->type = type; |
1523 | line->numElements = 1; |
1524 | line->elements = malloc(sizeof(*line->elements) * line->numElements); |
1525 | |
1526 | line->elements[0].item = malloc(strlen(val) + 3); |
1527 | sprintf(line->elements[0].item, "[%s]", val); |
1528 | line->elements[0].indent = strdup(""); |
1529 | } |
1530 | |
1531 | return line; |
1532 | } |
1533 | |
1534 | void removeLine(struct singleEntry * entry, struct singleLine * line) { |
1535 | struct singleLine * prev; |
1536 | int i; |
1537 | |
1538 | for (i = 0; i < line->numElements; i++) { |
1539 | free(line->elements[i].item); |
1540 | free(line->elements[i].indent); |
1541 | } |
1542 | free(line->elements); |
1543 | free(line->indent); |
1544 | |
1545 | if (line == entry->lines) { |
1546 | entry->lines = line->next; |
1547 | } else { |
1548 | prev = entry->lines; |
1549 | while (prev->next != line) prev = prev->next; |
1550 | prev->next = line->next; |
1551 | } |
1552 | |
1553 | free(line); |
1554 | } |
1555 | |
1556 | int argMatch(const char * one, const char * two) { |
1557 | char * first, * second; |
1558 | char * chptr; |
1559 | |
1560 | first = strcpy(alloca(strlen(one) + 1), one); |
1561 | second = strcpy(alloca(strlen(two) + 1), two); |
1562 | |
1563 | chptr = strchr(first, '='); |
1564 | if (chptr) *chptr = '\0'; |
1565 | |
1566 | chptr = strchr(second, '='); |
1567 | if (chptr) *chptr = '\0'; |
1568 | |
1569 | return strcmp(first, second); |
1570 | } |
1571 | |
1572 | int updateActualImage(struct grubConfig * cfg, const char * image, |
1573 | const char * prefix, const char * addArgs, |
1574 | const char * removeArgs, int multibootArgs) { |
1575 | struct singleEntry * entry; |
1576 | struct singleLine * line, * rootLine; |
1577 | int index = 0; |
1578 | int i, j, k; |
1579 | const char ** newArgs, ** oldArgs; |
1580 | const char ** arg; |
1581 | const char * chptr; |
1582 | int useKernelArgs = 0; |
1583 | int useRoot = 0; |
1584 | int firstElement; |
1585 | int *usedElements, *usedArgs; |
1586 | |
1587 | if (!image) return 0; |
1588 | |
1589 | if (!addArgs) { |
1590 | newArgs = malloc(sizeof(*newArgs)); |
1591 | *newArgs = NULL; |
1592 | } else { |
1593 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
1594 | fprintf(stderr, |
1595 | _("grubby: error separating arguments '%s'\n"), addArgs); |
1596 | return 1; |
1597 | } |
1598 | } |
1599 | |
1600 | if (!removeArgs) { |
1601 | oldArgs = malloc(sizeof(*oldArgs)); |
1602 | *oldArgs = NULL; |
1603 | } else { |
1604 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
1605 | fprintf(stderr, |
1606 | _("grubby: error separating arguments '%s'\n"), removeArgs); |
1607 | free(newArgs); |
1608 | return 1; |
1609 | } |
1610 | } |
1611 | |
1612 | for (i = 0; cfg->cfi->keywords[i].key; i++) |
1613 | if (cfg->cfi->keywords[i].type == LT_KERNELARGS) break; |
1614 | |
1615 | if (cfg->cfi->keywords[i].key) |
1616 | useKernelArgs = 1; |
1617 | |
1618 | for (i = 0; cfg->cfi->keywords[i].key; i++) |
1619 | if (cfg->cfi->keywords[i].type == LT_ROOT) break; |
1620 | |
1621 | if (cfg->cfi->keywords[i].key) |
1622 | useRoot = 1; |
1623 | |
1624 | k = 0; |
1625 | for (arg = newArgs; *arg; arg++) |
1626 | k++; |
1627 | usedArgs = calloc(k, sizeof(int)); |
1628 | |
1629 | while ((entry = findEntryByPath(cfg, image, prefix, &index))) { |
1630 | index++; |
1631 | |
1632 | line = entry->lines; |
1633 | while (line && line->type != LT_KERNEL) line = line->next; |
1634 | if (!line) continue; |
1635 | firstElement = 2; |
1636 | |
1637 | if (entry->multiboot && !multibootArgs) { |
1638 | /* first mb module line is the real kernel */ |
1639 | while (line && line->type != LT_MBMODULE) line = line->next; |
1640 | firstElement = 2; |
1641 | } else if (useKernelArgs) { |
1642 | while (line && line->type != LT_KERNELARGS) line = line->next; |
1643 | firstElement = 1; |
1644 | } |
1645 | |
1646 | if (!line && useKernelArgs) { |
1647 | /* no append in there, need to add it */ |
1648 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, NULL, NULL); |
1649 | } |
1650 | |
1651 | usedElements = calloc(line->numElements, sizeof(int)); |
1652 | |
1653 | k = 0; |
1654 | for (arg = newArgs; *arg; arg++) { |
1655 | if (usedArgs[k]) { |
1656 | k++; |
1657 | continue; |
1658 | } |
1659 | for (i = firstElement; i < line->numElements; i++) { |
1660 | if (usedElements[i]) |
1661 | continue; |
1662 | if (!argMatch(line->elements[i].item, *arg)) { |
1663 | usedElements[i]=1; |
1664 | usedArgs[k]=1; |
1665 | break; |
1666 | } |
1667 | } |
1668 | chptr = strchr(*arg, '='); |
1669 | |
1670 | if (i < line->numElements) { |
1671 | /* replace */ |
1672 | free(line->elements[i].item); |
1673 | line->elements[i].item = strdup(*arg); |
1674 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10) && *chptr) { |
1675 | rootLine = entry->lines; |
1676 | while (rootLine && rootLine->type != LT_ROOT) |
1677 | rootLine = rootLine->next; |
1678 | if (!rootLine) { |
1679 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, NULL, NULL); |
1680 | rootLine->elements = realloc(rootLine->elements, |
1681 | 2 * sizeof(*rootLine->elements)); |
1682 | rootLine->numElements++; |
1683 | rootLine->elements[1].indent = strdup(""); |
1684 | rootLine->elements[1].item = strdup(""); |
1685 | } |
1686 | |
1687 | free(rootLine->elements[1].item); |
1688 | rootLine->elements[1].item = strdup(chptr + 1); |
1689 | } else { |
1690 | /* append */ |
1691 | line->elements = realloc(line->elements, |
1692 | (line->numElements + 1) * sizeof(*line->elements)); |
1693 | line->elements[line->numElements].item = strdup(*arg); |
1694 | usedElements = realloc(usedElements, |
1695 | (line->numElements + 1) * sizeof(int)); |
1696 | usedElements[line->numElements] = 1; |
1697 | |
1698 | if (line->numElements > 1) { |
1699 | /* add to existing list of arguments */ |
1700 | line->elements[line->numElements].indent = |
1701 | line->elements[line->numElements - 1].indent; |
1702 | line->elements[line->numElements - 1].indent = strdup(" "); |
1703 | } else { |
1704 | /* First thing on this line; treat a bit differently. Note |
1705 | this is only possible if we've added a LT_KERNELARGS |
1706 | entry */ |
1707 | line->elements[line->numElements].indent = strdup(""); |
1708 | } |
1709 | |
1710 | line->numElements++; |
1711 | |
1712 | /* if we updated a root= here even though there is a |
1713 | LT_ROOT available we need to remove the LT_ROOT entry |
1714 | (this will happen if we switch from a device to a label) */ |
1715 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
1716 | rootLine = entry->lines; |
1717 | while (rootLine && rootLine->type != LT_ROOT) |
1718 | rootLine = rootLine->next; |
1719 | if (rootLine) { |
1720 | removeLine(entry, rootLine); |
1721 | } |
1722 | } |
1723 | } |
1724 | k++; |
1725 | } |
1726 | |
1727 | free(usedElements); |
1728 | |
1729 | /* no arguments to remove (i.e. no append line) */ |
1730 | if (!line) continue; |
1731 | |
1732 | /* this won't remove an LT_ROOT item properly (but then again, |
1733 | who cares? */ |
1734 | for (arg = oldArgs; *arg; arg++) { |
1735 | for (i = firstElement; i < line->numElements; i++) |
1736 | if (!argMatch(line->elements[i].item, *arg)) |
1737 | break; |
1738 | |
1739 | if (i < line->numElements) { |
1740 | /* if this isn't the first argument the previous argument |
1741 | gets this arguments post-indention */ |
1742 | if (i > firstElement) { |
1743 | free(line->elements[i - 1].indent); |
1744 | line->elements[i - 1].indent = line->elements[i].indent; |
1745 | } |
1746 | |
1747 | free(line->elements[i].item); |
1748 | |
1749 | for (j = i + 1; j < line->numElements; j++) |
1750 | line->elements[j - 1] = line->elements[j]; |
1751 | |
1752 | line->numElements--; |
1753 | } |
1754 | } |
1755 | |
1756 | if (line->numElements == 1) { |
1757 | /* don't need the line at all (note it has to be a |
1758 | LT_KERNELARGS for this to happen */ |
1759 | removeLine(entry, line); |
1760 | } |
1761 | } |
1762 | |
1763 | free(usedArgs); |
1764 | free(newArgs); |
1765 | free(oldArgs); |
1766 | |
1767 | return 0; |
1768 | } |
1769 | |
1770 | int updateImage(struct grubConfig * cfg, const char * image, |
1771 | const char * prefix, const char * addArgs, |
1772 | const char * removeArgs, |
1773 | const char * addMBArgs, const char * removeMBArgs) { |
1774 | int rc = 0; |
1775 | |
1776 | if (!image) return rc; |
1777 | |
1778 | /* update the main args first... */ |
1779 | if (addArgs || removeArgs) |
1780 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); |
1781 | if (rc) return rc; |
1782 | |
1783 | /* and now any multiboot args */ |
1784 | if (addMBArgs || removeMBArgs) |
1785 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); |
1786 | return rc; |
1787 | } |
1788 | |
1789 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { |
1790 | int fd; |
1791 | unsigned char bootSect[512]; |
1792 | int offset; |
1793 | |
1794 | fd = open(device, O_RDONLY); |
1795 | if (fd < 0) { |
1796 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
1797 | device, strerror(errno)); |
1798 | return 1; |
1799 | } |
1800 | |
1801 | if (read(fd, bootSect, 512) != 512) { |
1802 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
1803 | device, strerror(errno)); |
1804 | return 1; |
1805 | } |
1806 | close(fd); |
1807 | |
1808 | /* first three bytes should match, a jmp short should be in there */ |
1809 | if (memcmp(boot, bootSect, 3)) |
1810 | return 0; |
1811 | |
1812 | if (boot[1] == 0xeb) { |
1813 | offset = boot[2] + 2; |
1814 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
1815 | offset = (boot[3] << 8) + boot[2] + 2; |
1816 | } else if (boot[0] == 0xeb) { |
1817 | offset = boot[1] + 2; |
1818 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
1819 | offset = (boot[2] << 8) + boot[1] + 2; |
1820 | } else { |
1821 | return 0; |
1822 | } |
1823 | |
1824 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
1825 | return 0; |
1826 | |
1827 | return 2; |
1828 | } |
1829 | |
1830 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { |
1831 | int fd; |
1832 | char buf[65536]; |
1833 | char * end; |
1834 | char * chptr; |
1835 | char * chptr2; |
1836 | int rc; |
1837 | |
1838 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
1839 | *raw* devices listed in there */ |
1840 | |
1841 | if (!strncmp(mdDev, "/dev/", 5)) |
1842 | mdDev += 5; |
1843 | |
1844 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
1845 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
1846 | strerror(errno)); |
1847 | return 2; |
1848 | } |
1849 | |
1850 | rc = read(fd, buf, sizeof(buf) - 1); |
1851 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
1852 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
1853 | strerror(errno)); |
1854 | close(fd); |
1855 | return 2; |
1856 | } |
1857 | close(fd); |
1858 | buf[rc] = '\0'; |
1859 | |
1860 | chptr = buf; |
1861 | while (*chptr) { |
1862 | end = strchr(chptr, '\n'); |
1863 | if (!end) break; |
1864 | *end = '\0'; |
1865 | |
1866 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
1867 | chptr[strlen(mdDev)] == ' ') { |
1868 | |
1869 | /* found the device */ |
1870 | while (*chptr && *chptr != ':') chptr++; |
1871 | chptr++; |
1872 | while (*chptr && isspace(*chptr)) chptr++; |
1873 | |
1874 | /* skip the "active" bit */ |
1875 | while (*chptr && !isspace(*chptr)) chptr++; |
1876 | while (*chptr && isspace(*chptr)) chptr++; |
1877 | |
1878 | /* skip the raid level */ |
1879 | while (*chptr && !isspace(*chptr)) chptr++; |
1880 | while (*chptr && isspace(*chptr)) chptr++; |
1881 | |
1882 | /* everything else is partition stuff */ |
1883 | while (*chptr) { |
1884 | chptr2 = chptr; |
1885 | while (*chptr2 && *chptr2 != '[') chptr2++; |
1886 | if (!*chptr2) break; |
1887 | |
1888 | /* yank off the numbers at the end */ |
1889 | chptr2--; |
1890 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; |
1891 | chptr2++; |
1892 | *chptr2 = '\0'; |
1893 | |
1894 | /* Better, now we need the /dev/ back. We're done with |
1895 | * everything before this point, so we can just put |
1896 | * the /dev/ part there. There will always be room. */ |
1897 | memcpy(chptr - 5, "/dev/", 5); |
1898 | rc = checkDeviceBootloader(chptr - 5, boot); |
1899 | if (rc != 2) { |
1900 | return rc; |
1901 | } |
1902 | |
1903 | chptr = chptr2 + 1; |
1904 | /* skip the [11] bit */ |
1905 | while (*chptr && !isspace(*chptr)) chptr++; |
1906 | /* and move to the next one */ |
1907 | while (*chptr && isspace(*chptr)) chptr++; |
1908 | } |
1909 | |
1910 | /* we're good to go */ |
1911 | return 2; |
1912 | } |
1913 | |
1914 | chptr = end + 1; |
1915 | } |
1916 | |
1917 | fprintf(stderr, |
1918 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
1919 | mdDev); |
1920 | return 0; |
1921 | } |
1922 | |
1923 | int checkForLilo(struct grubConfig * config) { |
1924 | int fd; |
1925 | unsigned char boot[512]; |
1926 | struct singleLine * line; |
1927 | |
1928 | for (line = config->theLines; line; line = line->next) |
1929 | if (line->type == LT_BOOT) break; |
1930 | |
1931 | if (!line) { |
1932 | fprintf(stderr, |
1933 | _("grubby: no boot line found in lilo configuration\n")); |
1934 | return 1; |
1935 | } |
1936 | |
1937 | if (line->numElements != 2) return 1; |
1938 | |
1939 | fd = open("/boot/boot.b", O_RDONLY); |
1940 | if (fd < 0) { |
1941 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
1942 | "/boot/boot.b", strerror(errno)); |
1943 | return 1; |
1944 | } |
1945 | |
1946 | if (read(fd, boot, 512) != 512) { |
1947 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
1948 | "/boot/boot.b", strerror(errno)); |
1949 | return 1; |
1950 | } |
1951 | close(fd); |
1952 | |
1953 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
1954 | return checkLiloOnRaid(line->elements[1].item, boot); |
1955 | |
1956 | return checkDeviceBootloader(line->elements[1].item, boot); |
1957 | } |
1958 | |
1959 | int checkForGrub(struct grubConfig * config) { |
1960 | int fd; |
1961 | unsigned char bootSect[512]; |
1962 | char * boot; |
1963 | |
1964 | if (parseSysconfigGrub(NULL, &boot)) |
1965 | return 0; |
1966 | |
1967 | /* assume grub is not installed -- not an error condition */ |
1968 | if (!boot) |
1969 | return 0; |
1970 | |
1971 | fd = open("/boot/grub/stage1", O_RDONLY); |
1972 | if (fd < 0) |
1973 | /* this doesn't exist if grub hasn't been installed */ |
1974 | return 0; |
1975 | |
1976 | if (read(fd, bootSect, 512) != 512) { |
1977 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
1978 | "/boot/grub/stage1", strerror(errno)); |
1979 | return 1; |
1980 | } |
1981 | close(fd); |
1982 | |
1983 | return checkDeviceBootloader(boot, bootSect); |
1984 | } |
1985 | |
1986 | static char * getRootSpecifier(char * str) { |
1987 | char * idx, * rootspec = NULL; |
1988 | |
1989 | if (*str == '(') { |
1990 | idx = rootspec = strdup(str); |
1991 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; |
1992 | *(++idx) = '\0'; |
1993 | } |
1994 | return rootspec; |
1995 | } |
1996 | |
1997 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, |
1998 | const char * prefix, |
1999 | char * newKernelPath, char * newKernelTitle, |
2000 | char * newKernelArgs, char * newKernelInitrd, |
2001 | char * newMBKernel, char * newMBKernelArgs) { |
2002 | struct singleEntry * new; |
2003 | struct singleLine * newLine = NULL, * tmplLine = NULL, * lastLine = NULL; |
2004 | int needs; |
2005 | char * indent = NULL; |
2006 | char * rootspec = NULL; |
2007 | char * chptr; |
2008 | int i; |
2009 | enum lineType_e type; |
2010 | |
2011 | if (!newKernelPath) return 0; |
2012 | |
2013 | /* if the newKernelTitle is too long silently munge it into something |
2014 | * we can live with. truncating is first check, then we'll just mess with |
2015 | * it until it looks better */ |
2016 | if (config->cfi->maxTitleLength && |
2017 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
2018 | char * buf = alloca(config->cfi->maxTitleLength + 7); |
2019 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); |
2020 | int i = 1; |
2021 | |
2022 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); |
2023 | while (findEntryByPath(config, buf, NULL, NULL)) { |
2024 | sprintf(numBuf, "%d", i++); |
2025 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
2026 | } |
2027 | |
2028 | newKernelTitle = buf + 6; |
2029 | } |
2030 | |
2031 | new = malloc(sizeof(*new)); |
2032 | new->skip = 0; |
2033 | new->multiboot = 0; |
2034 | new->next = config->entries; |
2035 | new->lines = NULL; |
2036 | config->entries = new; |
2037 | |
2038 | /* copy/update from the template */ |
2039 | needs = KERNEL_KERNEL | KERNEL_INITRD | KERNEL_TITLE; |
2040 | if (newMBKernel) { |
2041 | needs |= KERNEL_MB; |
2042 | new->multiboot = 1; |
2043 | } |
2044 | |
2045 | if (template) { |
2046 | for (tmplLine = template->lines; tmplLine; tmplLine = tmplLine->next) { |
2047 | /* remember the indention level; we may need it for new lines */ |
2048 | if (tmplLine->numElements) |
2049 | indent = tmplLine->indent; |
2050 | |
2051 | /* skip comments */ |
2052 | chptr = tmplLine->indent; |
2053 | while (*chptr && isspace(*chptr)) chptr++; |
2054 | if (*chptr == '#') continue; |
2055 | |
2056 | /* we don't need an initrd here */ |
2057 | if (tmplLine->type == LT_INITRD && !newKernelInitrd) continue; |
2058 | |
2059 | if (tmplLine->type == LT_KERNEL && |
2060 | !template->multiboot && (needs & KERNEL_MB)) { |
2061 | struct singleLine *l; |
2062 | needs &= ~ KERNEL_MB; |
2063 | |
2064 | l = addLine(new, config->cfi, LT_KERNEL, |
2065 | config->secondaryIndent, |
2066 | newMBKernel + strlen(prefix)); |
2067 | |
2068 | tmplLine = lastLine; |
2069 | if (!new->lines) { |
2070 | new->lines = l; |
2071 | } else { |
2072 | newLine->next = l; |
2073 | newLine = l; |
2074 | } |
2075 | continue; |
2076 | } else if (tmplLine->type == LT_KERNEL && |
2077 | template->multiboot && !new->multiboot) { |
2078 | continue; /* don't need multiboot kernel here */ |
2079 | } |
2080 | |
2081 | if (!new->lines) { |
2082 | newLine = malloc(sizeof(*newLine)); |
2083 | new->lines = newLine; |
2084 | } else { |
2085 | newLine->next = malloc(sizeof(*newLine)); |
2086 | newLine = newLine->next; |
2087 | } |
2088 | |
2089 | |
2090 | newLine->indent = strdup(tmplLine->indent); |
2091 | newLine->next = NULL; |
2092 | newLine->type = tmplLine->type; |
2093 | newLine->numElements = tmplLine->numElements; |
2094 | newLine->elements = malloc(sizeof(*newLine->elements) * |
2095 | newLine->numElements); |
2096 | for (i = 0; i < newLine->numElements; i++) { |
2097 | newLine->elements[i].item = strdup(tmplLine->elements[i].item); |
2098 | newLine->elements[i].indent = |
2099 | strdup(tmplLine->elements[i].indent); |
2100 | } |
2101 | |
2102 | lastLine = tmplLine; |
2103 | if (tmplLine->type == LT_KERNEL && tmplLine->numElements >= 2) { |
2104 | char * repl; |
2105 | if (!template->multiboot) { |
2106 | needs &= ~KERNEL_KERNEL; |
2107 | repl = newKernelPath; |
2108 | } else { |
2109 | needs &= ~KERNEL_MB; |
2110 | repl = newMBKernel; |
2111 | } |
2112 | if (new->multiboot && !template->multiboot) { |
2113 | free(newLine->elements[0].item); |
2114 | newLine->elements[0].item = strdup("module"); |
2115 | newLine->type = LT_MBMODULE; |
2116 | } |
2117 | free(newLine->elements[1].item); |
2118 | rootspec = getRootSpecifier(tmplLine->elements[1].item); |
2119 | if (rootspec != NULL) { |
2120 | newLine->elements[1].item = sdupprintf("%s%s", |
2121 | rootspec, |
2122 | repl + |
2123 | strlen(prefix)); |
2124 | } else { |
2125 | newLine->elements[1].item = strdup(repl + |
2126 | strlen(prefix)); |
2127 | } |
2128 | } else if (tmplLine->type == LT_MBMODULE && |
2129 | tmplLine->numElements >= 2 && (needs & KERNEL_KERNEL)) { |
2130 | needs &= ~KERNEL_KERNEL; |
2131 | if (!new->multiboot && template->multiboot) { |
2132 | free(newLine->elements[0].item); |
2133 | newLine->elements[0].item = strdup("kernel"); |
2134 | newLine->type = LT_KERNEL; |
2135 | } |
2136 | free(newLine->elements[1].item); |
2137 | rootspec = getRootSpecifier(tmplLine->elements[1].item); |
2138 | if (rootspec != NULL) { |
2139 | newLine->elements[1].item = sdupprintf("%s%s", |
2140 | rootspec, |
2141 | newKernelPath + |
2142 | strlen(prefix)); |
2143 | } else { |
2144 | newLine->elements[1].item = strdup(newKernelPath + |
2145 | strlen(prefix)); |
2146 | } |
2147 | } else if (tmplLine->type == LT_INITRD && |
2148 | tmplLine->numElements >= 2) { |
2149 | needs &= ~KERNEL_INITRD; |
2150 | free(newLine->elements[1].item); |
2151 | if (new->multiboot && !template->multiboot) { |
2152 | free(newLine->elements[0].item); |
2153 | newLine->elements[0].item = strdup("module"); |
2154 | newLine->type = LT_MBMODULE; |
2155 | } |
2156 | rootspec = getRootSpecifier(tmplLine->elements[1].item); |
2157 | if (rootspec != NULL) { |
2158 | newLine->elements[1].item = sdupprintf("%s%s", |
2159 | rootspec, |
2160 | newKernelInitrd + |
2161 | strlen(prefix)); |
2162 | } else { |
2163 | newLine->elements[1].item = strdup(newKernelInitrd + |
2164 | strlen(prefix)); |
2165 | } |
2166 | } else if (tmplLine->type == LT_MBMODULE && |
2167 | tmplLine->numElements >= 2 && (needs & KERNEL_INITRD)) { |
2168 | needs &= ~KERNEL_INITRD; |
2169 | if (!new->multiboot && template->multiboot) { |
2170 | free(newLine->elements[0].item); |
2171 | newLine->elements[0].item = strdup("initrd"); |
2172 | newLine->type = LT_INITRD; |
2173 | } |
2174 | free(newLine->elements[1].item); |
2175 | rootspec = getRootSpecifier(tmplLine->elements[1].item); |
2176 | if (rootspec != NULL) { |
2177 | newLine->elements[1].item = sdupprintf("%s%s", |
2178 | rootspec, |
2179 | newKernelInitrd + |
2180 | strlen(prefix)); |
2181 | } else { |
2182 | newLine->elements[1].item = strdup(newKernelInitrd + |
2183 | strlen(prefix)); |
2184 | } |
2185 | } else if (tmplLine->type == LT_TITLE && |
2186 | tmplLine->numElements >= 2) { |
2187 | needs &= ~KERNEL_TITLE; |
2188 | |
2189 | for (i = 1; i < newLine->numElements; i++) { |
2190 | free(newLine->elements[i].item); |
2191 | free(newLine->elements[i].indent); |
2192 | } |
2193 | |
2194 | newLine->elements[1].item = strdup(newKernelTitle); |
2195 | newLine->elements[1].indent = strdup(""); |
2196 | newLine->numElements = 2; |
2197 | } else if (tmplLine->type == LT_TITLE && |
2198 | config->cfi->titleBracketed && |
2199 | tmplLine->numElements == 1) { |
2200 | needs &= ~KERNEL_TITLE; |
2201 | free(newLine->elements[0].item); |
2202 | free(newLine->elements[0].indent); |
2203 | newLine->elements = malloc(sizeof(*newLine->elements) * |
2204 | newLine->numElements); |
2205 | |
2206 | newLine->elements[0].item = malloc(strlen(newKernelTitle) + 3); |
2207 | sprintf(newLine->elements[0].item, "[%s]", newKernelTitle); |
2208 | newLine->elements[0].indent = strdup(""); |
2209 | newLine->numElements = 1; |
2210 | } |
2211 | } |
2212 | } else { |
2213 | for (i = 0; config->cfi->keywords[i].key; i++) { |
2214 | if ((config->cfi->keywords[i].type == config->cfi->entrySeparator) || (config->cfi->keywords[i].type == LT_OTHER)) |
2215 | break; |
2216 | } |
2217 | |
2218 | switch (config->cfi->keywords[i].type) { |
2219 | case LT_KERNEL: needs &= ~KERNEL_KERNEL, |
2220 | chptr = newKernelPath + strlen(prefix); |
2221 | type = LT_KERNEL; break; |
2222 | case LT_TITLE: needs &= ~KERNEL_TITLE, chptr = newKernelTitle; |
2223 | type = LT_TITLE; break; |
2224 | default: |
2225 | /* zipl strikes again */ |
2226 | if (config->cfi->titleBracketed) { |
2227 | needs &= ~KERNEL_TITLE; |
2228 | chptr = newKernelTitle; |
2229 | type = LT_TITLE; |
2230 | break; |
2231 | } else { |
2232 | abort(); |
2233 | } |
2234 | } |
2235 | |
2236 | newLine = addLine(new, config->cfi, type, config->primaryIndent, chptr); |
2237 | new->lines = newLine; |
2238 | } |
2239 | |
2240 | if (new->multiboot) { |
2241 | if (needs & KERNEL_MB) |
2242 | newLine = addLine(new, config->cfi, LT_KERNEL, |
2243 | config->secondaryIndent, |
2244 | newMBKernel + strlen(prefix)); |
2245 | if (needs & KERNEL_KERNEL) |
2246 | newLine = addLine(new, config->cfi, LT_MBMODULE, |
2247 | config->secondaryIndent, |
2248 | newKernelPath + strlen(prefix)); |
2249 | /* don't need to check for title as it's guaranteed to have been |
2250 | * done as we only do multiboot with grub which uses title as |
2251 | * a separator */ |
2252 | if (needs & KERNEL_INITRD && newKernelInitrd) |
2253 | newLine = addLine(new, config->cfi, LT_MBMODULE, |
2254 | config->secondaryIndent, |
2255 | newKernelInitrd + strlen(prefix)); |
2256 | } else { |
2257 | if (needs & KERNEL_KERNEL) |
2258 | newLine = addLine(new, config->cfi, LT_KERNEL, |
2259 | config->secondaryIndent, |
2260 | newKernelPath + strlen(prefix)); |
2261 | if (needs & KERNEL_TITLE) |
2262 | newLine = addLine(new, config->cfi, LT_TITLE, |
2263 | config->secondaryIndent, |
2264 | newKernelTitle); |
2265 | if (needs & KERNEL_INITRD && newKernelInitrd) |
2266 | newLine = addLine(new, config->cfi, LT_INITRD, |
2267 | config->secondaryIndent, |
2268 | newKernelInitrd + strlen(prefix)); |
2269 | } |
2270 | |
2271 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, |
2272 | newMBKernelArgs, NULL)) return 1; |
2273 | |
2274 | return 0; |
2275 | } |
2276 | |
2277 | int main(int argc, const char ** argv) { |
2278 | poptContext optCon; |
2279 | char * grubConfig = NULL; |
2280 | char * outputFile = NULL; |
2281 | int arg = 0; |
2282 | int flags = 0; |
2283 | int badImageOkay = 0; |
2284 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
2285 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
2286 | int bootloaderProbe = 0; |
2287 | char * updateKernelPath = NULL; |
2288 | char * newKernelPath = NULL; |
2289 | char * removeKernelPath = NULL; |
2290 | char * newKernelArgs = NULL; |
2291 | char * newKernelInitrd = NULL; |
2292 | char * newKernelTitle = NULL; |
2293 | char * newKernelVersion = NULL; |
2294 | char * newMBKernel = NULL; |
2295 | char * newMBKernelArgs = NULL; |
2296 | char * removeMBKernelArgs = NULL; |
2297 | char * removeMBKernel = NULL; |
2298 | char * bootPrefix = NULL; |
2299 | char * defaultKernel = NULL; |
2300 | char * removeArgs = NULL; |
2301 | char * kernelInfo = NULL; |
2302 | const char * chptr = NULL; |
2303 | struct configFileInfo * cfi = NULL; |
2304 | struct grubConfig * config; |
2305 | struct singleEntry * template = NULL; |
2306 | int copyDefault = 0, makeDefault = 0; |
2307 | int displayDefault = 0; |
2308 | struct poptOption options[] = { |
2309 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
2310 | _("add an entry for the specified kernel"), _("kernel-path") }, |
2311 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
2312 | _("add an entry for the specified multiboot kernel"), NULL }, |
2313 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
2314 | _("default arguments for the new kernel or new arguments for " |
2315 | "kernel being updated"), _("args") }, |
2316 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
2317 | _("default arguments for the new multiboot kernel or " |
2318 | "new arguments for multiboot kernel being updated"), NULL }, |
2319 | { "bad-image-okay", 0, 0, &badImageOkay, 0, |
2320 | _("don't sanity check images in boot entries (for testing only)"), |
2321 | NULL }, |
2322 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
2323 | _("filestystem which contains /boot directory (for testing only)"), |
2324 | _("bootfs") }, |
2325 | #if defined(__i386__) || defined(__x86_64__) |
2326 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
2327 | _("check if lilo is installed on lilo.conf boot sector") }, |
2328 | #endif |
2329 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
2330 | _("path to grub config file to update (\"-\" for stdin)"), |
2331 | _("path") }, |
2332 | { "copy-default", 0, 0, ©Default, 0, |
2333 | _("use the default boot entry as a template for the new entry " |
2334 | "being added; if the default is not a linux image, or if " |
2335 | "the kernel referenced by the default image does not exist, " |
2336 | "the first linux entry whose kernel does exist is used as the " |
2337 | "template"), NULL }, |
2338 | { "default-kernel", 0, 0, &displayDefault, 0, |
2339 | _("display the path of the default kernel") }, |
2340 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
2341 | _("configure elilo bootloader") }, |
2342 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
2343 | _("configure grub bootloader") }, |
2344 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
2345 | _("display boot information for specified kernel"), |
2346 | _("kernel-path") }, |
2347 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
2348 | _("initrd image for the new kernel"), _("initrd-path") }, |
2349 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
2350 | _("configure lilo bootloader") }, |
2351 | { "make-default", 0, 0, &makeDefault, 0, |
2352 | _("make the newly added entry the default boot entry"), NULL }, |
2353 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
2354 | _("path to output updated config file (\"-\" for stdout)"), |
2355 | _("path") }, |
2356 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
2357 | _("remove kernel arguments"), NULL }, |
2358 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
2359 | _("remove multiboot kernel arguments"), NULL }, |
2360 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
2361 | _("remove all entries for the specified kernel"), |
2362 | _("kernel-path") }, |
2363 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
2364 | _("remove all entries for the specified multiboot kernel"), NULL }, |
2365 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
2366 | _("make the first entry referencing the specified kernel " |
2367 | "the default"), _("kernel-path") }, |
2368 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
2369 | _("configure silo bootloader") }, |
2370 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
2371 | _("title to use for the new kernel entry"), _("entry-title") }, |
2372 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
2373 | _("updated information for the specified kernel"), |
2374 | _("kernel-path") }, |
2375 | { "version", 'v', 0, NULL, 'v', |
2376 | _("print the version of this program and exit"), NULL }, |
2377 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
2378 | _("configure yaboot bootloader") }, |
2379 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
2380 | _("configure zipl bootloader") }, |
2381 | POPT_AUTOHELP |
2382 | { 0, 0, 0, 0, 0 } |
2383 | }; |
2384 | |
2385 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
2386 | poptReadDefaultConfig(optCon, 1); |
2387 | |
2388 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
2389 | switch (arg) { |
2390 | case 'v': |
2391 | printf("grubby version %s\n", VERSION); |
2392 | exit(0); |
2393 | break; |
2394 | } |
2395 | } |
2396 | |
2397 | if (arg < -1) { |
2398 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
2399 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
2400 | poptStrerror(arg)); |
2401 | return 1; |
2402 | } |
2403 | |
2404 | if ((chptr = poptGetArg(optCon))) { |
2405 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
2406 | return 1; |
2407 | } |
2408 | |
2409 | if ((configureLilo + configureGrub + configureELilo + |
2410 | configureYaboot + configureSilo + configureZipl) > 1) { |
2411 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); |
2412 | return 1; |
2413 | } else if (bootloaderProbe && grubConfig) { |
2414 | fprintf(stderr, |
2415 | _("grubby: cannot specify config file with --bootloader-probe\n")); |
2416 | return 1; |
2417 | } else if (configureLilo) { |
2418 | cfi = &liloConfigType; |
2419 | } else if (configureGrub) { |
2420 | cfi = &grubConfigType; |
2421 | } else if (configureELilo) { |
2422 | cfi = &eliloConfigType; |
2423 | } else if (configureYaboot) { |
2424 | cfi = &yabootConfigType; |
2425 | } else if (configureSilo) { |
2426 | cfi = &siloConfigType; |
2427 | } else if (configureZipl) { |
2428 | cfi = &ziplConfigType; |
2429 | } |
2430 | |
2431 | if (!cfi) { |
2432 | #ifdef __ia64__ |
2433 | cfi = &eliloConfigType; |
2434 | #elif __powerpc__ |
2435 | cfi = &yabootConfigType; |
2436 | #elif __sparc__ |
2437 | cfi = &siloConfigType; |
2438 | #elif __s390__ |
2439 | cfi = &ziplConfigType; |
2440 | #elif __s390x__ |
2441 | cfi = &ziplConfigtype; |
2442 | #else |
2443 | cfi = &grubConfigType; |
2444 | #endif |
2445 | } |
2446 | |
2447 | if (!grubConfig) |
2448 | grubConfig = cfi->defaultConfig; |
2449 | |
2450 | if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion || |
2451 | newKernelPath || removeKernelPath || makeDefault || |
2452 | defaultKernel)) { |
2453 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " |
2454 | "specified option")); |
2455 | return 1; |
2456 | } |
2457 | |
2458 | if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath || |
2459 | removeKernelPath)) { |
2460 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
2461 | "be used when adding or removing kernels\n")); |
2462 | return 1; |
2463 | } |
2464 | |
2465 | if (newKernelPath && !newKernelTitle) { |
2466 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
2467 | return 1; |
2468 | } else if (!newKernelPath && (newKernelTitle || newKernelInitrd || |
2469 | newKernelInitrd || copyDefault || |
2470 | makeDefault)) { |
2471 | fprintf(stderr, _("grubby: kernel path expected\n")); |
2472 | return 1; |
2473 | } |
2474 | |
2475 | if (newKernelPath && updateKernelPath) { |
2476 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
2477 | "not be used together")); |
2478 | return 1; |
2479 | } |
2480 | |
2481 | if (makeDefault && defaultKernel) { |
2482 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
2483 | "may not be used together\n")); |
2484 | return 1; |
2485 | } else if (defaultKernel && removeKernelPath && |
2486 | !strcmp(defaultKernel, removeKernelPath)) { |
2487 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); |
2488 | return 1; |
2489 | } else if (defaultKernel && newKernelPath && |
2490 | !strcmp(defaultKernel, newKernelPath)) { |
2491 | makeDefault = 1; |
2492 | defaultKernel = NULL; |
2493 | } |
2494 | |
2495 | if (!strcmp(grubConfig, "-") && !outputFile) { |
2496 | fprintf(stderr, _("grubby: output file must be specified if stdin " |
2497 | "is used\n")); |
2498 | return 1; |
2499 | } |
2500 | |
2501 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel |
2502 | && !kernelInfo && !bootloaderProbe && !updateKernelPath |
2503 | && !removeMBKernel) { |
2504 | fprintf(stderr, _("grubby: no action specified\n")); |
2505 | return 1; |
2506 | } |
2507 | |
2508 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
2509 | |
2510 | if (cfi->needsBootPrefix) { |
2511 | if (!bootPrefix) { |
2512 | bootPrefix = findBootPrefix(); |
2513 | if (!bootPrefix) return 1; |
2514 | } else { |
2515 | /* this shouldn't end with a / */ |
2516 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
2517 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
2518 | } |
2519 | } else { |
2520 | bootPrefix = ""; |
2521 | } |
2522 | |
2523 | if (bootloaderProbe) { |
2524 | int lrc = 0, grc = 0; |
2525 | struct grubConfig * lconfig, * gconfig; |
2526 | |
2527 | if (!access(grubConfigType.defaultConfig, F_OK)) { |
2528 | gconfig = readConfig(grubConfigType.defaultConfig, &grubConfigType); |
2529 | if (!gconfig) |
2530 | grc = 1; |
2531 | else |
2532 | grc = checkForGrub(gconfig); |
2533 | } |
2534 | |
2535 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
2536 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); |
2537 | if (!lconfig) |
2538 | lrc = 1; |
2539 | else |
2540 | lrc = checkForLilo(lconfig); |
2541 | } |
2542 | |
2543 | if (lrc == 1 || grc == 1) return 1; |
2544 | |
2545 | if (lrc == 2) printf("lilo\n"); |
2546 | if (grc == 2) printf("grub\n"); |
2547 | |
2548 | return 0; |
2549 | } |
2550 | |
2551 | config = readConfig(grubConfig, cfi); |
2552 | if (!config) return 1; |
2553 | |
2554 | if (displayDefault) { |
2555 | struct singleLine * line; |
2556 | struct singleEntry * entry; |
2557 | char * rootspec; |
2558 | |
2559 | if (config->defaultImage == -1) return 0; |
2560 | entry = findEntryByIndex(config, config->defaultImage); |
2561 | if (!entry) return 0; |
2562 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; |
2563 | |
2564 | line = entry->lines; |
2565 | while (line && line->type != LT_KERNEL) line = line->next; |
2566 | if (!line) return 0; |
2567 | |
2568 | rootspec = getRootSpecifier(line->elements[1].item); |
2569 | printf("%s%s\n", bootPrefix, line->elements[1].item + |
2570 | ((rootspec != NULL) ? strlen(rootspec) : 0)); |
2571 | |
2572 | return 0; |
2573 | } else if (kernelInfo) |
2574 | return displayInfo(config, kernelInfo, bootPrefix); |
2575 | |
2576 | if (copyDefault) { |
2577 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
2578 | if (!template) return 1; |
2579 | } |
2580 | |
2581 | markRemovedImage(config, removeKernelPath, bootPrefix); |
2582 | markRemovedImage(config, removeMBKernel, bootPrefix); |
2583 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, |
2584 | bootPrefix, flags); |
2585 | setFallbackImage(config, newKernelPath != NULL); |
2586 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
2587 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; |
2588 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
2589 | newKernelTitle, newKernelArgs, newKernelInitrd, |
2590 | newMBKernel, newMBKernelArgs)) return 1; |
2591 | |
2592 | |
2593 | if (numEntries(config) == 0) { |
2594 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " |
2595 | "Not writing out new config.\n")); |
2596 | return 1; |
2597 | } |
2598 | |
2599 | if (!outputFile) |
2600 | outputFile = grubConfig; |
2601 | |
2602 | return writeConfig(config, outputFile, bootPrefix); |
2603 | } |