Contents of /tags/grubby-8_29/grubby.c
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Revision 1694 -
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Fri Feb 17 23:23:07 2012 UTC (12 years, 3 months ago) by niro
Original Path: trunk/grubby/grubby.c
File MIME type: text/plain
File size: 88534 byte(s)
Fri Feb 17 23:23:07 2012 UTC (12 years, 3 months ago) by niro
Original Path: trunk/grubby/grubby.c
File MIME type: text/plain
File size: 88534 byte(s)
Tweak some make options. Some functions are only used in dbgPrintf() arguments. As such, errors/warnings on unused functions need to be disabled. Also, use -std=gnu99. Also, add a debug target.
1 | /* |
2 | * grubby.c |
3 | * |
4 | * Copyright (C) 2001-2008 Red Hat, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License as published by |
9 | * the Free Software Foundation; either version 2 of the License, or |
10 | * (at your option) any later version. |
11 | * |
12 | * This program is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * GNU General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU General Public License |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
19 | */ |
20 | |
21 | #ifndef _GNU_SOURCE |
22 | #define _GNU_SOURCE |
23 | #endif |
24 | #include <ctype.h> |
25 | #include <errno.h> |
26 | #include <fcntl.h> |
27 | #include <mntent.h> |
28 | #include <popt.h> |
29 | #include <stdarg.h> |
30 | #include <stdlib.h> |
31 | #include <string.h> |
32 | #include <sys/stat.h> |
33 | #include <unistd.h> |
34 | #include <libgen.h> |
35 | #include <execinfo.h> |
36 | #include <signal.h> |
37 | #include <blkid/blkid.h> |
38 | |
39 | #ifndef DEBUG |
40 | #define DEBUG 0 |
41 | #endif |
42 | |
43 | #if DEBUG |
44 | #define dbgPrintf(format, args...) fprintf(stderr, format , ## args) |
45 | #else |
46 | #define dbgPrintf(format, args...) |
47 | #endif |
48 | |
49 | #define _(A) (A) |
50 | |
51 | #define MAX_EXTRA_INITRDS 16 /* code segment checked by --bootloader-probe */ |
52 | #define CODE_SEG_SIZE 128 /* code segment checked by --bootloader-probe */ |
53 | |
54 | /* comments get lumped in with indention */ |
55 | struct lineElement { |
56 | char * item; |
57 | char * indent; |
58 | }; |
59 | |
60 | enum lineType_e { |
61 | LT_WHITESPACE = 1 << 0, |
62 | LT_TITLE = 1 << 1, |
63 | LT_KERNEL = 1 << 2, |
64 | LT_INITRD = 1 << 3, |
65 | LT_HYPER = 1 << 4, |
66 | LT_DEFAULT = 1 << 5, |
67 | LT_MBMODULE = 1 << 6, |
68 | LT_ROOT = 1 << 7, |
69 | LT_FALLBACK = 1 << 8, |
70 | LT_KERNELARGS = 1 << 9, |
71 | LT_BOOT = 1 << 10, |
72 | LT_BOOTROOT = 1 << 11, |
73 | LT_LBA = 1 << 12, |
74 | LT_OTHER = 1 << 13, |
75 | LT_GENERIC = 1 << 14, |
76 | LT_UNKNOWN = 1 << 15, |
77 | }; |
78 | |
79 | struct singleLine { |
80 | char * indent; |
81 | int numElements; |
82 | struct lineElement * elements; |
83 | struct singleLine * next; |
84 | enum lineType_e type; |
85 | }; |
86 | |
87 | struct singleEntry { |
88 | struct singleLine * lines; |
89 | int skip; |
90 | int multiboot; |
91 | struct singleEntry * next; |
92 | }; |
93 | |
94 | #define GRUBBY_BADIMAGE_OKAY (1 << 0) |
95 | |
96 | #define GRUB_CONFIG_NO_DEFAULT (1 << 0) /* don't write out default=0 */ |
97 | |
98 | /* These defines are (only) used in addNewKernel() */ |
99 | #define NEED_KERNEL (1 << 0) |
100 | #define NEED_INITRD (1 << 1) |
101 | #define NEED_TITLE (1 << 2) |
102 | #define NEED_ARGS (1 << 3) |
103 | #define NEED_MB (1 << 4) |
104 | |
105 | #define MAIN_DEFAULT (1 << 0) |
106 | #define DEFAULT_SAVED -2 |
107 | |
108 | struct keywordTypes { |
109 | char * key; |
110 | enum lineType_e type; |
111 | char nextChar; |
112 | char separatorChar; |
113 | }; |
114 | |
115 | struct configFileInfo { |
116 | char * defaultConfig; |
117 | struct keywordTypes * keywords; |
118 | int defaultIsIndex; |
119 | int defaultSupportSaved; |
120 | enum lineType_e entryStart; |
121 | int needsBootPrefix; |
122 | int argsInQuotes; |
123 | int maxTitleLength; |
124 | int titleBracketed; |
125 | int mbHyperFirst; |
126 | int mbInitRdIsModule; |
127 | int mbConcatArgs; |
128 | int mbAllowExtraInitRds; |
129 | }; |
130 | |
131 | struct keywordTypes grubKeywords[] = { |
132 | { "title", LT_TITLE, ' ' }, |
133 | { "root", LT_BOOTROOT, ' ' }, |
134 | { "default", LT_DEFAULT, ' ' }, |
135 | { "fallback", LT_FALLBACK, ' ' }, |
136 | { "kernel", LT_KERNEL, ' ' }, |
137 | { "initrd", LT_INITRD, ' ', ' ' }, |
138 | { "module", LT_MBMODULE, ' ' }, |
139 | { "kernel", LT_HYPER, ' ' }, |
140 | { NULL, 0, 0 }, |
141 | }; |
142 | |
143 | struct configFileInfo grubConfigType = { |
144 | .defaultConfig = "/boot/grub/grub.conf", |
145 | .keywords = grubKeywords, |
146 | .defaultIsIndex = 1, |
147 | .defaultSupportSaved = 1, |
148 | .entryStart = LT_TITLE, |
149 | .needsBootPrefix = 1, |
150 | .mbHyperFirst = 1, |
151 | .mbInitRdIsModule = 1, |
152 | .mbAllowExtraInitRds = 1, |
153 | }; |
154 | |
155 | struct keywordTypes yabootKeywords[] = { |
156 | { "label", LT_TITLE, '=' }, |
157 | { "root", LT_ROOT, '=' }, |
158 | { "default", LT_DEFAULT, '=' }, |
159 | { "image", LT_KERNEL, '=' }, |
160 | { "bsd", LT_GENERIC, '=' }, |
161 | { "macos", LT_GENERIC, '=' }, |
162 | { "macosx", LT_GENERIC, '=' }, |
163 | { "magicboot", LT_GENERIC, '=' }, |
164 | { "darwin", LT_GENERIC, '=' }, |
165 | { "timeout", LT_GENERIC, '=' }, |
166 | { "install", LT_GENERIC, '=' }, |
167 | { "fstype", LT_GENERIC, '=' }, |
168 | { "hfstype", LT_GENERIC, '=' }, |
169 | { "delay", LT_GENERIC, '=' }, |
170 | { "defaultos", LT_GENERIC, '=' }, |
171 | { "init-message", LT_GENERIC, '=' }, |
172 | { "enablecdboot", LT_GENERIC, ' ' }, |
173 | { "enableofboot", LT_GENERIC, ' ' }, |
174 | { "enablenetboot", LT_GENERIC, ' ' }, |
175 | { "nonvram", LT_GENERIC, ' ' }, |
176 | { "hide", LT_GENERIC, ' ' }, |
177 | { "protect", LT_GENERIC, ' ' }, |
178 | { "nobless", LT_GENERIC, ' ' }, |
179 | { "nonvram", LT_GENERIC, ' ' }, |
180 | { "brokenosx", LT_GENERIC, ' ' }, |
181 | { "usemount", LT_GENERIC, ' ' }, |
182 | { "mntpoint", LT_GENERIC, '=' }, |
183 | { "partition", LT_GENERIC, '=' }, |
184 | { "device", LT_GENERIC, '=' }, |
185 | { "fstype", LT_GENERIC, '=' }, |
186 | { "initrd", LT_INITRD, '=', ';' }, |
187 | { "append", LT_KERNELARGS, '=' }, |
188 | { "boot", LT_BOOT, '=' }, |
189 | { "lba", LT_LBA, ' ' }, |
190 | { NULL, 0, 0 }, |
191 | }; |
192 | |
193 | struct keywordTypes liloKeywords[] = { |
194 | { "label", LT_TITLE, '=' }, |
195 | { "root", LT_ROOT, '=' }, |
196 | { "default", LT_DEFAULT, '=' }, |
197 | { "image", LT_KERNEL, '=' }, |
198 | { "other", LT_OTHER, '=' }, |
199 | { "initrd", LT_INITRD, '=' }, |
200 | { "append", LT_KERNELARGS, '=' }, |
201 | { "boot", LT_BOOT, '=' }, |
202 | { "lba", LT_LBA, ' ' }, |
203 | { NULL, 0, 0 }, |
204 | }; |
205 | |
206 | struct keywordTypes eliloKeywords[] = { |
207 | { "label", LT_TITLE, '=' }, |
208 | { "root", LT_ROOT, '=' }, |
209 | { "default", LT_DEFAULT, '=' }, |
210 | { "image", LT_KERNEL, '=' }, |
211 | { "initrd", LT_INITRD, '=' }, |
212 | { "append", LT_KERNELARGS, '=' }, |
213 | { "vmm", LT_HYPER, '=' }, |
214 | { NULL, 0, 0 }, |
215 | }; |
216 | |
217 | struct keywordTypes siloKeywords[] = { |
218 | { "label", LT_TITLE, '=' }, |
219 | { "root", LT_ROOT, '=' }, |
220 | { "default", LT_DEFAULT, '=' }, |
221 | { "image", LT_KERNEL, '=' }, |
222 | { "other", LT_OTHER, '=' }, |
223 | { "initrd", LT_INITRD, '=' }, |
224 | { "append", LT_KERNELARGS, '=' }, |
225 | { "boot", LT_BOOT, '=' }, |
226 | { NULL, 0, 0 }, |
227 | }; |
228 | |
229 | struct keywordTypes ziplKeywords[] = { |
230 | { "target", LT_BOOTROOT, '=' }, |
231 | { "image", LT_KERNEL, '=' }, |
232 | { "ramdisk", LT_INITRD, '=' }, |
233 | { "parameters", LT_KERNELARGS, '=' }, |
234 | { "default", LT_DEFAULT, '=' }, |
235 | { NULL, 0, 0 }, |
236 | }; |
237 | |
238 | struct keywordTypes extlinuxKeywords[] = { |
239 | { "label", LT_TITLE, ' ' }, |
240 | { "root", LT_ROOT, ' ' }, |
241 | { "default", LT_DEFAULT, ' ' }, |
242 | { "kernel", LT_KERNEL, ' ' }, |
243 | { "initrd", LT_INITRD, ' ', ',' }, |
244 | { "append", LT_KERNELARGS, ' ' }, |
245 | { "prompt", LT_UNKNOWN, ' ' }, |
246 | { NULL, 0, 0 }, |
247 | }; |
248 | int useextlinuxmenu; |
249 | struct configFileInfo eliloConfigType = { |
250 | .defaultConfig = "/boot/efi/EFI/redhat/elilo.conf", |
251 | .keywords = eliloKeywords, |
252 | .entryStart = LT_KERNEL, |
253 | .needsBootPrefix = 1, |
254 | .argsInQuotes = 1, |
255 | .mbConcatArgs = 1, |
256 | }; |
257 | |
258 | struct configFileInfo liloConfigType = { |
259 | .defaultConfig = "/etc/lilo.conf", |
260 | .keywords = liloKeywords, |
261 | .entryStart = LT_KERNEL, |
262 | .argsInQuotes = 1, |
263 | .maxTitleLength = 15, |
264 | }; |
265 | |
266 | struct configFileInfo yabootConfigType = { |
267 | .defaultConfig = "/etc/yaboot.conf", |
268 | .keywords = yabootKeywords, |
269 | .entryStart = LT_KERNEL, |
270 | .needsBootPrefix = 1, |
271 | .argsInQuotes = 1, |
272 | .maxTitleLength = 15, |
273 | .mbAllowExtraInitRds = 1, |
274 | }; |
275 | |
276 | struct configFileInfo siloConfigType = { |
277 | .defaultConfig = "/etc/silo.conf", |
278 | .keywords = siloKeywords, |
279 | .entryStart = LT_KERNEL, |
280 | .needsBootPrefix = 1, |
281 | .argsInQuotes = 1, |
282 | .maxTitleLength = 15, |
283 | }; |
284 | |
285 | struct configFileInfo ziplConfigType = { |
286 | .defaultConfig = "/etc/zipl.conf", |
287 | .keywords = ziplKeywords, |
288 | .entryStart = LT_TITLE, |
289 | .argsInQuotes = 1, |
290 | .titleBracketed = 1, |
291 | }; |
292 | |
293 | struct configFileInfo extlinuxConfigType = { |
294 | .defaultConfig = "/boot/extlinux/extlinux.conf", |
295 | .keywords = extlinuxKeywords, |
296 | .entryStart = LT_TITLE, |
297 | .needsBootPrefix = 1, |
298 | .maxTitleLength = 255, |
299 | .mbAllowExtraInitRds = 1, |
300 | }; |
301 | |
302 | struct grubConfig { |
303 | struct singleLine * theLines; |
304 | struct singleEntry * entries; |
305 | char * primaryIndent; |
306 | char * secondaryIndent; |
307 | int defaultImage; /* -1 if none specified -- this value is |
308 | * written out, overriding original */ |
309 | int fallbackImage; /* just like defaultImage */ |
310 | int flags; |
311 | struct configFileInfo * cfi; |
312 | }; |
313 | |
314 | blkid_cache blkid; |
315 | |
316 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); |
317 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, |
318 | const char * path, const char * prefix, |
319 | int * index); |
320 | static int readFile(int fd, char ** bufPtr); |
321 | static void lineInit(struct singleLine * line); |
322 | struct singleLine * lineDup(struct singleLine * line); |
323 | static void lineFree(struct singleLine * line); |
324 | static int lineWrite(FILE * out, struct singleLine * line, |
325 | struct configFileInfo * cfi); |
326 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
327 | struct configFileInfo * cfi); |
328 | static char * getRootSpecifier(char * str); |
329 | static void insertElement(struct singleLine * line, |
330 | const char * item, int insertHere, |
331 | struct configFileInfo * cfi); |
332 | static void removeElement(struct singleLine * line, int removeHere); |
333 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
334 | struct configFileInfo * cfi); |
335 | static enum lineType_e getTypeByKeyword(char * keyword, |
336 | struct configFileInfo * cfi); |
337 | static struct singleLine * getLineByType(enum lineType_e type, |
338 | struct singleLine * line); |
339 | static int checkForExtLinux(struct grubConfig * config); |
340 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
341 | struct singleLine * tmplLine, |
342 | struct singleLine * prevLine, |
343 | const char * val, |
344 | struct configFileInfo * cfi); |
345 | struct singleLine * addLine(struct singleEntry * entry, |
346 | struct configFileInfo * cfi, |
347 | enum lineType_e type, char * defaultIndent, |
348 | const char * val); |
349 | |
350 | static char * sdupprintf(const char *format, ...) |
351 | #ifdef __GNUC__ |
352 | __attribute__ ((format (printf, 1, 2))); |
353 | #else |
354 | ; |
355 | #endif |
356 | |
357 | static char * sdupprintf(const char *format, ...) { |
358 | char *buf = NULL; |
359 | char c; |
360 | va_list args; |
361 | size_t size = 0; |
362 | va_start(args, format); |
363 | |
364 | /* XXX requires C99 vsnprintf behavior */ |
365 | size = vsnprintf(&c, 1, format, args) + 1; |
366 | if (size == -1) { |
367 | printf("ERROR: vsnprintf behavior is not C99\n"); |
368 | abort(); |
369 | } |
370 | |
371 | va_end(args); |
372 | va_start(args, format); |
373 | |
374 | buf = malloc(size); |
375 | if (buf == NULL) |
376 | return NULL; |
377 | vsnprintf(buf, size, format, args); |
378 | va_end (args); |
379 | |
380 | return buf; |
381 | } |
382 | |
383 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
384 | struct configFileInfo * cfi) { |
385 | struct keywordTypes * kw; |
386 | for (kw = cfi->keywords; kw->key; kw++) { |
387 | if (kw->type == type) |
388 | return kw; |
389 | } |
390 | return NULL; |
391 | } |
392 | |
393 | static char * getpathbyspec(char *device) { |
394 | if (!blkid) |
395 | blkid_get_cache(&blkid, NULL); |
396 | |
397 | return blkid_get_devname(blkid, device, NULL); |
398 | } |
399 | |
400 | static char * getuuidbydev(char *device) { |
401 | if (!blkid) |
402 | blkid_get_cache(&blkid, NULL); |
403 | |
404 | return blkid_get_tag_value(blkid, "UUID", device); |
405 | } |
406 | |
407 | static enum lineType_e getTypeByKeyword(char * keyword, |
408 | struct configFileInfo * cfi) { |
409 | struct keywordTypes * kw; |
410 | for (kw = cfi->keywords; kw->key; kw++) { |
411 | if (!strcmp(keyword, kw->key)) |
412 | return kw->type; |
413 | } |
414 | return LT_UNKNOWN; |
415 | } |
416 | |
417 | static struct singleLine * getLineByType(enum lineType_e type, |
418 | struct singleLine * line) { |
419 | dbgPrintf("getLineByType(%d): ", type); |
420 | for (; line; line = line->next) { |
421 | dbgPrintf("%d:%s ", line->type, |
422 | line->numElements ? line->elements[0].item : "(empty)"); |
423 | if (line->type & type) break; |
424 | } |
425 | dbgPrintf(line ? "\n" : " (failed)\n"); |
426 | return line; |
427 | } |
428 | |
429 | static int isBracketedTitle(struct singleLine * line) { |
430 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
431 | int len = strlen(line->elements[0].item); |
432 | if (*(line->elements[0].item + len - 1) == ']') { |
433 | /* FIXME: this is a hack... */ |
434 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
435 | return 1; |
436 | } |
437 | } |
438 | } |
439 | return 0; |
440 | } |
441 | |
442 | static int isEntryStart(struct singleLine * line, |
443 | struct configFileInfo * cfi) { |
444 | return line->type == cfi->entryStart || line->type == LT_OTHER || |
445 | (cfi->titleBracketed && isBracketedTitle(line)); |
446 | } |
447 | |
448 | /* extract the title from within brackets (for zipl) */ |
449 | static char * extractTitle(struct singleLine * line) { |
450 | /* bracketed title... let's extract it (leaks a byte) */ |
451 | char * title; |
452 | title = strdup(line->elements[0].item); |
453 | title++; |
454 | *(title + strlen(title) - 1) = '\0'; |
455 | return title; |
456 | } |
457 | |
458 | static int readFile(int fd, char ** bufPtr) { |
459 | int alloced = 0, size = 0, i = 0; |
460 | char * buf = NULL; |
461 | |
462 | do { |
463 | size += i; |
464 | if ((size + 1024) > alloced) { |
465 | alloced += 4096; |
466 | buf = realloc(buf, alloced + 1); |
467 | } |
468 | } while ((i = read(fd, buf + size, 1024)) > 0); |
469 | |
470 | if (i < 0) { |
471 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); |
472 | free(buf); |
473 | return 1; |
474 | } |
475 | |
476 | buf = realloc(buf, size + 2); |
477 | if (size == 0) |
478 | buf[size++] = '\n'; |
479 | else |
480 | if (buf[size - 1] != '\n') |
481 | buf[size++] = '\n'; |
482 | buf[size] = '\0'; |
483 | |
484 | *bufPtr = buf; |
485 | |
486 | return 0; |
487 | } |
488 | |
489 | static void lineInit(struct singleLine * line) { |
490 | line->indent = NULL; |
491 | line->elements = NULL; |
492 | line->numElements = 0; |
493 | line->next = NULL; |
494 | } |
495 | |
496 | struct singleLine * lineDup(struct singleLine * line) { |
497 | int i; |
498 | struct singleLine * newLine = malloc(sizeof(*newLine)); |
499 | |
500 | newLine->indent = strdup(line->indent); |
501 | newLine->next = NULL; |
502 | newLine->type = line->type; |
503 | newLine->numElements = line->numElements; |
504 | newLine->elements = malloc(sizeof(*newLine->elements) * |
505 | newLine->numElements); |
506 | |
507 | for (i = 0; i < newLine->numElements; i++) { |
508 | newLine->elements[i].indent = strdup(line->elements[i].indent); |
509 | newLine->elements[i].item = strdup(line->elements[i].item); |
510 | } |
511 | |
512 | return newLine; |
513 | } |
514 | |
515 | static void lineFree(struct singleLine * line) { |
516 | int i; |
517 | |
518 | if (line->indent) free(line->indent); |
519 | |
520 | for (i = 0; i < line->numElements; i++) { |
521 | free(line->elements[i].item); |
522 | free(line->elements[i].indent); |
523 | } |
524 | |
525 | if (line->elements) free(line->elements); |
526 | lineInit(line); |
527 | } |
528 | |
529 | static int lineWrite(FILE * out, struct singleLine * line, |
530 | struct configFileInfo * cfi) { |
531 | int i; |
532 | |
533 | if (fprintf(out, "%s", line->indent) == -1) return -1; |
534 | |
535 | for (i = 0; i < line->numElements; i++) { |
536 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
537 | if (fputc('"', out) == EOF) return -1; |
538 | |
539 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; |
540 | if (i < line->numElements - 1) |
541 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; |
542 | } |
543 | |
544 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
545 | if (fputc('"', out) == EOF) return -1; |
546 | |
547 | if (fprintf(out, "\n") == -1) return -1; |
548 | |
549 | return 0; |
550 | } |
551 | |
552 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
553 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
554 | struct configFileInfo * cfi) { |
555 | char * end; |
556 | char * start = *bufPtr; |
557 | char * chptr; |
558 | int elementsAlloced = 0; |
559 | struct lineElement * element; |
560 | int first = 1; |
561 | |
562 | lineFree(line); |
563 | |
564 | end = strchr(start, '\n'); |
565 | *end = '\0'; |
566 | *bufPtr = end + 1; |
567 | |
568 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
569 | |
570 | line->indent = strndup(start, chptr - start); |
571 | start = chptr; |
572 | |
573 | while (start < end) { |
574 | /* we know !isspace(*start) */ |
575 | |
576 | if (elementsAlloced == line->numElements) { |
577 | elementsAlloced += 5; |
578 | line->elements = realloc(line->elements, |
579 | sizeof(*line->elements) * elementsAlloced); |
580 | } |
581 | |
582 | element = line->elements + line->numElements; |
583 | |
584 | chptr = start; |
585 | while (*chptr && !isspace(*chptr)) { |
586 | if (first && *chptr == '=') break; |
587 | chptr++; |
588 | } |
589 | element->item = strndup(start, chptr - start); |
590 | start = chptr; |
591 | |
592 | /* lilo actually accepts the pathological case of append = " foo " */ |
593 | if (*start == '=') |
594 | chptr = start + 1; |
595 | else |
596 | chptr = start; |
597 | |
598 | do { |
599 | for (; *chptr && isspace(*chptr); chptr++); |
600 | if (*chptr == '=') |
601 | chptr = chptr + 1; |
602 | } while (isspace(*chptr)); |
603 | |
604 | element->indent = strndup(start, chptr - start); |
605 | start = chptr; |
606 | |
607 | line->numElements++; |
608 | first = 0; |
609 | } |
610 | |
611 | if (!line->numElements) |
612 | line->type = LT_WHITESPACE; |
613 | else { |
614 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
615 | if (line->type == LT_UNKNOWN) { |
616 | /* zipl does [title] instead of something reasonable like all |
617 | * the other boot loaders. kind of ugly */ |
618 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
619 | line->type = LT_TITLE; |
620 | } |
621 | |
622 | /* this is awkward, but we need to be able to handle keywords |
623 | that begin with a # (specifically for #boot in grub.conf), |
624 | but still make comments lines with no elements (everything |
625 | stored in the indent */ |
626 | if (*line->elements[0].item == '#') { |
627 | char * fullLine; |
628 | int len; |
629 | int i; |
630 | |
631 | len = strlen(line->indent); |
632 | for (i = 0; i < line->numElements; i++) |
633 | len += strlen(line->elements[i].item) + |
634 | strlen(line->elements[i].indent); |
635 | |
636 | fullLine = malloc(len + 1); |
637 | strcpy(fullLine, line->indent); |
638 | free(line->indent); |
639 | line->indent = fullLine; |
640 | |
641 | for (i = 0; i < line->numElements; i++) { |
642 | strcat(fullLine, line->elements[i].item); |
643 | strcat(fullLine, line->elements[i].indent); |
644 | free(line->elements[i].item); |
645 | free(line->elements[i].indent); |
646 | } |
647 | |
648 | line->type = LT_WHITESPACE; |
649 | line->numElements = 0; |
650 | } |
651 | } else { |
652 | struct keywordTypes *kw; |
653 | |
654 | kw = getKeywordByType(line->type, cfi); |
655 | |
656 | /* space isn't the only separator, we need to split |
657 | * elements up more |
658 | */ |
659 | if (!isspace(kw->separatorChar)) { |
660 | int i; |
661 | char indent[2] = ""; |
662 | indent[0] = kw->separatorChar; |
663 | for (i = 1; i < line->numElements; i++) { |
664 | char *p; |
665 | int j; |
666 | int numNewElements; |
667 | |
668 | numNewElements = 0; |
669 | p = line->elements[i].item; |
670 | while (*p != '\0') { |
671 | if (*p == kw->separatorChar) |
672 | numNewElements++; |
673 | p++; |
674 | } |
675 | if (line->numElements + numNewElements >= elementsAlloced) { |
676 | elementsAlloced += numNewElements + 5; |
677 | line->elements = realloc(line->elements, |
678 | sizeof(*line->elements) * elementsAlloced); |
679 | } |
680 | |
681 | for (j = line->numElements; j > i; j--) { |
682 | line->elements[j + numNewElements] = line->elements[j]; |
683 | } |
684 | line->numElements += numNewElements; |
685 | |
686 | p = line->elements[i].item; |
687 | while (*p != '\0') { |
688 | |
689 | while (*p != kw->separatorChar && *p != '\0') p++; |
690 | if (*p == '\0') { |
691 | break; |
692 | } |
693 | |
694 | free(line->elements[i].indent); |
695 | line->elements[i].indent = strdup(indent); |
696 | *p++ = '\0'; |
697 | i++; |
698 | line->elements[i].item = strdup(p); |
699 | line->elements[i].indent = strdup(""); |
700 | p = line->elements[i].item; |
701 | } |
702 | } |
703 | } |
704 | } |
705 | } |
706 | |
707 | return 0; |
708 | } |
709 | |
710 | static struct grubConfig * readConfig(const char * inName, |
711 | struct configFileInfo * cfi) { |
712 | int in; |
713 | char * incoming = NULL, * head; |
714 | int rc; |
715 | int sawEntry = 0; |
716 | int movedLine = 0; |
717 | struct grubConfig * cfg; |
718 | struct singleLine * last = NULL, * line, * defaultLine = NULL; |
719 | char * end; |
720 | struct singleEntry * entry = NULL; |
721 | int i, len; |
722 | char * buf; |
723 | |
724 | if (!strcmp(inName, "-")) { |
725 | in = 0; |
726 | } else { |
727 | if ((in = open(inName, O_RDONLY)) < 0) { |
728 | fprintf(stderr, _("error opening %s for read: %s\n"), |
729 | inName, strerror(errno)); |
730 | return NULL; |
731 | } |
732 | } |
733 | |
734 | rc = readFile(in, &incoming); |
735 | close(in); |
736 | if (rc) return NULL; |
737 | |
738 | head = incoming; |
739 | cfg = malloc(sizeof(*cfg)); |
740 | cfg->primaryIndent = strdup(""); |
741 | cfg->secondaryIndent = strdup("\t"); |
742 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
743 | cfg->cfi = cfi; |
744 | cfg->theLines = NULL; |
745 | cfg->entries = NULL; |
746 | cfg->fallbackImage = 0; |
747 | |
748 | /* copy everything we have */ |
749 | while (*head) { |
750 | line = malloc(sizeof(*line)); |
751 | lineInit(line); |
752 | |
753 | if (getNextLine(&head, line, cfi)) { |
754 | free(line); |
755 | /* XXX memory leak of everything in cfg */ |
756 | return NULL; |
757 | } |
758 | |
759 | if (!sawEntry && line->numElements) { |
760 | free(cfg->primaryIndent); |
761 | cfg->primaryIndent = strdup(line->indent); |
762 | } else if (line->numElements) { |
763 | free(cfg->secondaryIndent); |
764 | cfg->secondaryIndent = strdup(line->indent); |
765 | } |
766 | |
767 | if (isEntryStart(line, cfi)) { |
768 | sawEntry = 1; |
769 | if (!entry) { |
770 | cfg->entries = malloc(sizeof(*entry)); |
771 | entry = cfg->entries; |
772 | } else { |
773 | entry->next = malloc(sizeof(*entry)); |
774 | entry = entry->next; |
775 | } |
776 | |
777 | entry->skip = 0; |
778 | entry->multiboot = 0; |
779 | entry->lines = NULL; |
780 | entry->next = NULL; |
781 | } |
782 | |
783 | if (line->type == LT_DEFAULT && line->numElements == 2) { |
784 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
785 | defaultLine = line; |
786 | |
787 | } else if (line->type == LT_KERNEL) { |
788 | /* if by some freak chance this is multiboot and the "module" |
789 | * lines came earlier in the template, make sure to use LT_HYPER |
790 | * instead of LT_KERNEL now |
791 | */ |
792 | if (entry->multiboot) |
793 | line->type = LT_HYPER; |
794 | |
795 | } else if (line->type == LT_MBMODULE) { |
796 | /* go back and fix the LT_KERNEL line to indicate LT_HYPER |
797 | * instead, now that we know this is a multiboot entry. |
798 | * This only applies to grub, but that's the only place we |
799 | * should find LT_MBMODULE lines anyway. |
800 | */ |
801 | struct singleLine * l; |
802 | for (l = entry->lines; l; l = l->next) { |
803 | if (l->type == LT_HYPER) |
804 | break; |
805 | else if (l->type == LT_KERNEL) { |
806 | l->type = LT_HYPER; |
807 | break; |
808 | } |
809 | } |
810 | entry->multiboot = 1; |
811 | |
812 | } else if (line->type == LT_HYPER) { |
813 | entry->multiboot = 1; |
814 | |
815 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
816 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); |
817 | if (*end) cfg->fallbackImage = -1; |
818 | |
819 | } else if (line->type == LT_TITLE && line->numElements > 1) { |
820 | /* make the title a single argument (undoing our parsing) */ |
821 | len = 0; |
822 | for (i = 1; i < line->numElements; i++) { |
823 | len += strlen(line->elements[i].item); |
824 | len += strlen(line->elements[i].indent); |
825 | } |
826 | buf = malloc(len + 1); |
827 | *buf = '\0'; |
828 | |
829 | for (i = 1; i < line->numElements; i++) { |
830 | strcat(buf, line->elements[i].item); |
831 | free(line->elements[i].item); |
832 | |
833 | if ((i + 1) != line->numElements) { |
834 | strcat(buf, line->elements[i].indent); |
835 | free(line->elements[i].indent); |
836 | } |
837 | } |
838 | |
839 | line->elements[1].indent = |
840 | line->elements[line->numElements - 1].indent; |
841 | line->elements[1].item = buf; |
842 | line->numElements = 2; |
843 | |
844 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
845 | /* Strip off any " which may be present; they'll be put back |
846 | on write. This is one of the few (the only?) places that grubby |
847 | canonicalizes the output */ |
848 | |
849 | if (line->numElements >= 2) { |
850 | int last, len; |
851 | |
852 | if (*line->elements[1].item == '"') |
853 | memmove(line->elements[1].item, line->elements[1].item + 1, |
854 | strlen(line->elements[1].item + 1) + 1); |
855 | |
856 | last = line->numElements - 1; |
857 | len = strlen(line->elements[last].item) - 1; |
858 | if (line->elements[last].item[len] == '"') |
859 | line->elements[last].item[len] = '\0'; |
860 | } |
861 | } |
862 | |
863 | /* If we find a generic config option which should live at the |
864 | top of the file, move it there. Old versions of grubby were |
865 | probably responsible for putting new images in the wrong |
866 | place in front of it anyway. */ |
867 | if (sawEntry && line->type == LT_GENERIC) { |
868 | struct singleLine **l = &cfg->theLines; |
869 | struct singleLine **last_nonws = &cfg->theLines; |
870 | while (*l) { |
871 | if ((*l)->type != LT_WHITESPACE) |
872 | last_nonws = &((*l)->next); |
873 | l = &((*l)->next); |
874 | } |
875 | line->next = *last_nonws; |
876 | *last_nonws = line; |
877 | movedLine = 1; |
878 | continue; /* without setting 'last' */ |
879 | } |
880 | |
881 | /* If a second line of whitespace happens after a generic option |
882 | which was moved, drop it. */ |
883 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { |
884 | lineFree(line); |
885 | free(line); |
886 | movedLine = 0; |
887 | continue; |
888 | } |
889 | movedLine = 0; |
890 | |
891 | if (sawEntry) { |
892 | if (!entry->lines) |
893 | entry->lines = line; |
894 | else |
895 | last->next = line; |
896 | dbgPrintf("readConfig added %d to %p\n", line->type, entry); |
897 | } else { |
898 | if (!cfg->theLines) |
899 | cfg->theLines = line; |
900 | else |
901 | last->next = line; |
902 | dbgPrintf("readConfig added %d to cfg\n", line->type); |
903 | } |
904 | |
905 | last = line; |
906 | } |
907 | |
908 | free(incoming); |
909 | |
910 | if (defaultLine) { |
911 | if (cfi->defaultSupportSaved && |
912 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { |
913 | cfg->defaultImage = DEFAULT_SAVED; |
914 | } else if (cfi->defaultIsIndex) { |
915 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); |
916 | if (*end) cfg->defaultImage = -1; |
917 | } else if (defaultLine->numElements >= 2) { |
918 | i = 0; |
919 | while ((entry = findEntryByIndex(cfg, i))) { |
920 | for (line = entry->lines; line; line = line->next) |
921 | if (line->type == LT_TITLE) break; |
922 | |
923 | if (!cfi->titleBracketed) { |
924 | if (line && (line->numElements >= 2) && |
925 | !strcmp(defaultLine->elements[1].item, |
926 | line->elements[1].item)) break; |
927 | } else if (line) { |
928 | if (!strcmp(defaultLine->elements[1].item, |
929 | extractTitle(line))) break; |
930 | } |
931 | i++; |
932 | entry = NULL; |
933 | } |
934 | |
935 | if (entry){ |
936 | cfg->defaultImage = i; |
937 | }else{ |
938 | cfg->defaultImage = -1; |
939 | } |
940 | } |
941 | } else { |
942 | cfg->defaultImage = 0; |
943 | } |
944 | |
945 | return cfg; |
946 | } |
947 | |
948 | static void writeDefault(FILE * out, char * indent, |
949 | char * separator, struct grubConfig * cfg) { |
950 | struct singleEntry * entry; |
951 | struct singleLine * line; |
952 | int i; |
953 | |
954 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; |
955 | |
956 | if (cfg->defaultImage == DEFAULT_SAVED) |
957 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
958 | else if (cfg->defaultImage > -1) { |
959 | if (cfg->cfi->defaultIsIndex) { |
960 | fprintf(out, "%sdefault%s%d\n", indent, separator, |
961 | cfg->defaultImage); |
962 | } else { |
963 | int image = cfg->defaultImage; |
964 | |
965 | entry = cfg->entries; |
966 | while (entry && entry->skip) entry = entry->next; |
967 | |
968 | i = 0; |
969 | while (entry && i < image) { |
970 | entry = entry->next; |
971 | |
972 | while (entry && entry->skip) entry = entry->next; |
973 | i++; |
974 | } |
975 | |
976 | if (!entry) return; |
977 | |
978 | line = getLineByType(LT_TITLE, entry->lines); |
979 | |
980 | if (line && line->numElements >= 2) |
981 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
982 | line->elements[1].item); |
983 | else if (line && (line->numElements == 1) && |
984 | cfg->cfi->titleBracketed) { |
985 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
986 | extractTitle(line)); |
987 | } |
988 | } |
989 | } |
990 | } |
991 | |
992 | static int writeConfig(struct grubConfig * cfg, char * outName, |
993 | const char * prefix) { |
994 | FILE * out; |
995 | struct singleLine * line; |
996 | struct singleEntry * entry; |
997 | char * tmpOutName; |
998 | int needs = MAIN_DEFAULT; |
999 | struct stat sb; |
1000 | int i; |
1001 | |
1002 | if (!strcmp(outName, "-")) { |
1003 | out = stdout; |
1004 | tmpOutName = NULL; |
1005 | } else { |
1006 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
1007 | char * buf; |
1008 | int len = 256; |
1009 | int rc; |
1010 | |
1011 | /* most likely the symlink is relative, so change our |
1012 | directory to the dir of the symlink */ |
1013 | rc = chdir(dirname(strdupa(outName))); |
1014 | do { |
1015 | buf = alloca(len + 1); |
1016 | rc = readlink(basename(outName), buf, len); |
1017 | if (rc == len) len += 256; |
1018 | } while (rc == len); |
1019 | |
1020 | if (rc < 0) { |
1021 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), |
1022 | outName, strerror(errno)); |
1023 | return 1; |
1024 | } |
1025 | |
1026 | outName = buf; |
1027 | outName[rc] = '\0'; |
1028 | } |
1029 | |
1030 | tmpOutName = alloca(strlen(outName) + 2); |
1031 | sprintf(tmpOutName, "%s-", outName); |
1032 | out = fopen(tmpOutName, "w"); |
1033 | if (!out) { |
1034 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, |
1035 | strerror(errno)); |
1036 | return 1; |
1037 | } |
1038 | |
1039 | if (!stat(outName, &sb)) { |
1040 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
1041 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), |
1042 | tmpOutName, strerror(errno)); |
1043 | fclose(out); |
1044 | unlink(tmpOutName); |
1045 | return 1; |
1046 | } |
1047 | } |
1048 | } |
1049 | |
1050 | line = cfg->theLines; |
1051 | while (line) { |
1052 | if (line->type == LT_DEFAULT) { |
1053 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1054 | needs &= ~MAIN_DEFAULT; |
1055 | } else if (line->type == LT_FALLBACK) { |
1056 | if (cfg->fallbackImage > -1) |
1057 | fprintf(out, "%s%s%s%d\n", line->indent, |
1058 | line->elements[0].item, line->elements[0].indent, |
1059 | cfg->fallbackImage); |
1060 | } else { |
1061 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1062 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1063 | tmpOutName, strerror(errno)); |
1064 | fclose(out); |
1065 | unlink(tmpOutName); |
1066 | return 1; |
1067 | } |
1068 | } |
1069 | |
1070 | line = line->next; |
1071 | } |
1072 | |
1073 | if (needs & MAIN_DEFAULT) { |
1074 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
1075 | needs &= ~MAIN_DEFAULT; |
1076 | } |
1077 | |
1078 | i = 0; |
1079 | while ((entry = findEntryByIndex(cfg, i++))) { |
1080 | if (entry->skip) continue; |
1081 | |
1082 | line = entry->lines; |
1083 | while (line) { |
1084 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1085 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1086 | tmpOutName, strerror(errno)); |
1087 | fclose(out); |
1088 | unlink(tmpOutName); |
1089 | return 1; |
1090 | } |
1091 | line = line->next; |
1092 | } |
1093 | } |
1094 | |
1095 | if (tmpOutName) { |
1096 | if (rename(tmpOutName, outName)) { |
1097 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), |
1098 | tmpOutName, outName, strerror(errno)); |
1099 | unlink(outName); |
1100 | return 1; |
1101 | } |
1102 | } |
1103 | |
1104 | return 0; |
1105 | } |
1106 | |
1107 | static int numEntries(struct grubConfig *cfg) { |
1108 | int i = 0; |
1109 | struct singleEntry * entry; |
1110 | |
1111 | entry = cfg->entries; |
1112 | while (entry) { |
1113 | if (!entry->skip) |
1114 | i++; |
1115 | entry = entry->next; |
1116 | } |
1117 | return i; |
1118 | } |
1119 | |
1120 | static char *findDiskForRoot() |
1121 | { |
1122 | int fd; |
1123 | char buf[65536]; |
1124 | char *devname; |
1125 | char *chptr; |
1126 | int rc; |
1127 | |
1128 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { |
1129 | fprintf(stderr, "grubby: failed to open %s: %s\n", |
1130 | _PATH_MOUNTED, strerror(errno)); |
1131 | return NULL; |
1132 | } |
1133 | |
1134 | rc = read(fd, buf, sizeof(buf) - 1); |
1135 | if (rc <= 0) { |
1136 | fprintf(stderr, "grubby: failed to read %s: %s\n", |
1137 | _PATH_MOUNTED, strerror(errno)); |
1138 | close(fd); |
1139 | return NULL; |
1140 | } |
1141 | close(fd); |
1142 | buf[rc] = '\0'; |
1143 | chptr = buf; |
1144 | |
1145 | while (chptr && chptr != buf+rc) { |
1146 | devname = chptr; |
1147 | |
1148 | /* |
1149 | * The first column of a mtab entry is the device, but if the entry is a |
1150 | * special device it won't start with /, so move on to the next line. |
1151 | */ |
1152 | if (*devname != '/') { |
1153 | chptr = strchr(chptr, '\n'); |
1154 | if (chptr) |
1155 | chptr++; |
1156 | continue; |
1157 | } |
1158 | |
1159 | /* Seek to the next space */ |
1160 | chptr = strchr(chptr, ' '); |
1161 | if (!chptr) { |
1162 | fprintf(stderr, "grubby: error parsing %s: %s\n", |
1163 | _PATH_MOUNTED, strerror(errno)); |
1164 | return NULL; |
1165 | } |
1166 | |
1167 | /* |
1168 | * The second column of a mtab entry is the mount point, we are looking |
1169 | * for '/' obviously. |
1170 | */ |
1171 | if (*(++chptr) == '/' && *(++chptr) == ' ') { |
1172 | /* |
1173 | * Move back 2, which is the first space after the device name, set |
1174 | * it to \0 so strdup will just get the devicename. |
1175 | */ |
1176 | chptr -= 2; |
1177 | *chptr = '\0'; |
1178 | return strdup(devname); |
1179 | } |
1180 | |
1181 | /* Next line */ |
1182 | chptr = strchr(chptr, '\n'); |
1183 | if (chptr) |
1184 | chptr++; |
1185 | } |
1186 | |
1187 | return NULL; |
1188 | } |
1189 | |
1190 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, |
1191 | int skipRemoved, int flags) { |
1192 | struct singleLine * line; |
1193 | char * fullName; |
1194 | int i; |
1195 | char * dev; |
1196 | char * rootspec; |
1197 | char * rootdev; |
1198 | |
1199 | if (skipRemoved && entry->skip) return 0; |
1200 | |
1201 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1202 | if (!line || line->numElements < 2) return 0; |
1203 | |
1204 | if (flags & GRUBBY_BADIMAGE_OKAY) return 1; |
1205 | |
1206 | fullName = alloca(strlen(bootPrefix) + |
1207 | strlen(line->elements[1].item) + 1); |
1208 | rootspec = getRootSpecifier(line->elements[1].item); |
1209 | sprintf(fullName, "%s%s", bootPrefix, |
1210 | line->elements[1].item + (rootspec ? strlen(rootspec) : 0)); |
1211 | if (access(fullName, R_OK)) return 0; |
1212 | |
1213 | for (i = 2; i < line->numElements; i++) |
1214 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1215 | if (i < line->numElements) { |
1216 | dev = line->elements[i].item + 5; |
1217 | } else { |
1218 | /* look for a lilo style LT_ROOT line */ |
1219 | line = getLineByType(LT_ROOT, entry->lines); |
1220 | |
1221 | if (line && line->numElements >= 2) { |
1222 | dev = line->elements[1].item; |
1223 | } else { |
1224 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS. |
1225 | * grub+multiboot uses LT_MBMODULE for the args, so check that too. |
1226 | */ |
1227 | line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines); |
1228 | |
1229 | /* failed to find one */ |
1230 | if (!line) return 0; |
1231 | |
1232 | for (i = 1; i < line->numElements; i++) |
1233 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1234 | if (i < line->numElements) |
1235 | dev = line->elements[i].item + 5; |
1236 | else { |
1237 | /* it failed too... can't find root= */ |
1238 | return 0; |
1239 | } |
1240 | } |
1241 | } |
1242 | |
1243 | dev = getpathbyspec(dev); |
1244 | if (!dev) |
1245 | return 0; |
1246 | |
1247 | rootdev = findDiskForRoot(); |
1248 | if (!rootdev) |
1249 | return 0; |
1250 | |
1251 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
1252 | free(rootdev); |
1253 | return 0; |
1254 | } |
1255 | |
1256 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
1257 | free(rootdev); |
1258 | return 0; |
1259 | } |
1260 | |
1261 | free(rootdev); |
1262 | |
1263 | return 1; |
1264 | } |
1265 | |
1266 | /* returns the first match on or after the one pointed to by index (if index |
1267 | is not NULL) which is not marked as skip */ |
1268 | struct singleEntry * findEntryByPath(struct grubConfig * config, |
1269 | const char * kernel, const char * prefix, |
1270 | int * index) { |
1271 | struct singleEntry * entry = NULL; |
1272 | struct singleLine * line; |
1273 | int i; |
1274 | char * chptr; |
1275 | char * rootspec = NULL; |
1276 | enum lineType_e checkType = LT_KERNEL; |
1277 | |
1278 | if (isdigit(*kernel)) { |
1279 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
1280 | |
1281 | i = 0; |
1282 | indexVars[i] = strtol(kernel, &chptr, 10); |
1283 | while (*chptr == ',') { |
1284 | i++; |
1285 | kernel = chptr + 1; |
1286 | indexVars[i] = strtol(kernel, &chptr, 10); |
1287 | } |
1288 | |
1289 | if (*chptr) { |
1290 | /* can't parse it, bail */ |
1291 | return NULL; |
1292 | } |
1293 | |
1294 | indexVars[i + 1] = -1; |
1295 | |
1296 | i = 0; |
1297 | if (index) { |
1298 | while (i < *index) i++; |
1299 | if (indexVars[i] == -1) return NULL; |
1300 | } |
1301 | |
1302 | entry = findEntryByIndex(config, indexVars[i]); |
1303 | if (!entry) return NULL; |
1304 | |
1305 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1306 | if (!line) return NULL; |
1307 | |
1308 | if (index) *index = indexVars[i]; |
1309 | return entry; |
1310 | } |
1311 | |
1312 | if (!strcmp(kernel, "DEFAULT")) { |
1313 | if (index && *index > config->defaultImage) { |
1314 | entry = NULL; |
1315 | } else { |
1316 | entry = findEntryByIndex(config, config->defaultImage); |
1317 | if (entry && entry->skip) |
1318 | entry = NULL; |
1319 | else if (index) |
1320 | *index = config->defaultImage; |
1321 | } |
1322 | } else if (!strcmp(kernel, "ALL")) { |
1323 | if (index) |
1324 | i = *index; |
1325 | else |
1326 | i = 0; |
1327 | |
1328 | while ((entry = findEntryByIndex(config, i))) { |
1329 | if (!entry->skip) break; |
1330 | i++; |
1331 | } |
1332 | |
1333 | if (entry && index) |
1334 | *index = i; |
1335 | } else { |
1336 | if (index) |
1337 | i = *index; |
1338 | else |
1339 | i = 0; |
1340 | |
1341 | if (!strncmp(kernel, "TITLE=", 6)) { |
1342 | prefix = ""; |
1343 | checkType = LT_TITLE; |
1344 | kernel += 6; |
1345 | } |
1346 | |
1347 | for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) { |
1348 | if (entry->skip) continue; |
1349 | |
1350 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry); |
1351 | |
1352 | /* check all the lines matching checkType */ |
1353 | for (line = entry->lines; line; line = line->next) { |
1354 | line = getLineByType(entry->multiboot && checkType == LT_KERNEL ? |
1355 | LT_KERNEL|LT_MBMODULE|LT_HYPER : |
1356 | checkType, line); |
1357 | if (!line) break; /* not found in this entry */ |
1358 | |
1359 | if (line && line->numElements >= 2) { |
1360 | rootspec = getRootSpecifier(line->elements[1].item); |
1361 | if (!strcmp(line->elements[1].item + |
1362 | ((rootspec != NULL) ? strlen(rootspec) : 0), |
1363 | kernel + strlen(prefix))) |
1364 | break; |
1365 | } |
1366 | } |
1367 | |
1368 | /* make sure this entry has a kernel identifier; this skips |
1369 | * non-Linux boot entries (could find netbsd etc, though, which is |
1370 | * unfortunate) |
1371 | */ |
1372 | if (line && getLineByType(LT_KERNEL|LT_HYPER, entry->lines)) |
1373 | break; /* found 'im! */ |
1374 | } |
1375 | |
1376 | if (index) *index = i; |
1377 | } |
1378 | |
1379 | return entry; |
1380 | } |
1381 | |
1382 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { |
1383 | struct singleEntry * entry; |
1384 | |
1385 | entry = cfg->entries; |
1386 | while (index && entry) { |
1387 | entry = entry->next; |
1388 | index--; |
1389 | } |
1390 | |
1391 | return entry; |
1392 | } |
1393 | |
1394 | /* Find a good template to use for the new kernel. An entry is |
1395 | * good if the kernel and mkinitrd exist (even if the entry |
1396 | * is going to be removed). Try and use the default entry, but |
1397 | * if that doesn't work just take the first. If we can't find one, |
1398 | * bail. */ |
1399 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, |
1400 | int * indexPtr, int skipRemoved, int flags) { |
1401 | struct singleEntry * entry, * entry2; |
1402 | int index; |
1403 | |
1404 | if (cfg->defaultImage > -1) { |
1405 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
1406 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
1407 | if (indexPtr) *indexPtr = cfg->defaultImage; |
1408 | return entry; |
1409 | } |
1410 | } |
1411 | |
1412 | index = 0; |
1413 | while ((entry = findEntryByIndex(cfg, index))) { |
1414 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
1415 | int j; |
1416 | for (j = 0; j < index; j++) { |
1417 | entry2 = findEntryByIndex(cfg, j); |
1418 | if (entry2->skip) index--; |
1419 | } |
1420 | if (indexPtr) *indexPtr = index; |
1421 | |
1422 | return entry; |
1423 | } |
1424 | |
1425 | index++; |
1426 | } |
1427 | |
1428 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); |
1429 | |
1430 | return NULL; |
1431 | } |
1432 | |
1433 | char * findBootPrefix(void) { |
1434 | struct stat sb, sb2; |
1435 | |
1436 | stat("/", &sb); |
1437 | #ifdef __ia64__ |
1438 | stat("/boot/efi/EFI/redhat/", &sb2); |
1439 | #else |
1440 | stat("/boot", &sb2); |
1441 | #endif |
1442 | |
1443 | if (sb.st_dev == sb2.st_dev) |
1444 | return strdup(""); |
1445 | |
1446 | #ifdef __ia64__ |
1447 | return strdup("/boot/efi/EFI/redhat/"); |
1448 | #else |
1449 | return strdup("/boot"); |
1450 | #endif |
1451 | } |
1452 | |
1453 | void markRemovedImage(struct grubConfig * cfg, const char * image, |
1454 | const char * prefix) { |
1455 | struct singleEntry * entry; |
1456 | |
1457 | if (!image) return; |
1458 | |
1459 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
1460 | entry->skip = 1; |
1461 | } |
1462 | |
1463 | void setDefaultImage(struct grubConfig * config, int hasNew, |
1464 | const char * defaultKernelPath, int newIsDefault, |
1465 | const char * prefix, int flags) { |
1466 | struct singleEntry * entry, * entry2, * newDefault; |
1467 | int i, j; |
1468 | |
1469 | if (newIsDefault) { |
1470 | config->defaultImage = 0; |
1471 | return; |
1472 | } else if (defaultKernelPath) { |
1473 | i = 0; |
1474 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { |
1475 | config->defaultImage = i; |
1476 | } else { |
1477 | config->defaultImage = -1; |
1478 | return; |
1479 | } |
1480 | } |
1481 | |
1482 | /* defaultImage now points to what we'd like to use, but before any order |
1483 | changes */ |
1484 | if (config->defaultImage == DEFAULT_SAVED) |
1485 | /* default is set to saved, we don't want to change it */ |
1486 | return; |
1487 | |
1488 | if (config->defaultImage > -1) |
1489 | entry = findEntryByIndex(config, config->defaultImage); |
1490 | else |
1491 | entry = NULL; |
1492 | |
1493 | if (entry && !entry->skip) { |
1494 | /* we can preserve the default */ |
1495 | if (hasNew) |
1496 | config->defaultImage++; |
1497 | |
1498 | /* count the number of entries erased before this one */ |
1499 | for (j = 0; j < config->defaultImage; j++) { |
1500 | entry2 = findEntryByIndex(config, j); |
1501 | if (entry2->skip) config->defaultImage--; |
1502 | } |
1503 | } else if (hasNew) { |
1504 | config->defaultImage = 0; |
1505 | } else { |
1506 | /* Either we just erased the default (or the default line was bad |
1507 | * to begin with) and didn't put a new one in. We'll use the first |
1508 | * valid image. */ |
1509 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, |
1510 | flags); |
1511 | if (!newDefault) |
1512 | config->defaultImage = -1; |
1513 | } |
1514 | } |
1515 | |
1516 | void setFallbackImage(struct grubConfig * config, int hasNew) { |
1517 | struct singleEntry * entry, * entry2; |
1518 | int j; |
1519 | |
1520 | if (config->fallbackImage == -1) return; |
1521 | |
1522 | entry = findEntryByIndex(config, config->fallbackImage); |
1523 | if (!entry || entry->skip) { |
1524 | config->fallbackImage = -1; |
1525 | return; |
1526 | } |
1527 | |
1528 | if (hasNew) |
1529 | config->fallbackImage++; |
1530 | |
1531 | /* count the number of entries erased before this one */ |
1532 | for (j = 0; j < config->fallbackImage; j++) { |
1533 | entry2 = findEntryByIndex(config, j); |
1534 | if (entry2->skip) config->fallbackImage--; |
1535 | } |
1536 | } |
1537 | |
1538 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { |
1539 | struct singleLine * line; |
1540 | char * root = NULL; |
1541 | int i; |
1542 | |
1543 | printf("index=%d\n", index); |
1544 | |
1545 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1546 | if (!line) { |
1547 | printf("non linux entry\n"); |
1548 | return; |
1549 | } |
1550 | |
1551 | printf("kernel=%s\n", line->elements[1].item); |
1552 | |
1553 | if (line->numElements >= 3) { |
1554 | printf("args=\""); |
1555 | i = 2; |
1556 | while (i < line->numElements) { |
1557 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
1558 | root = line->elements[i].item + 5; |
1559 | } else { |
1560 | printf("%s%s", line->elements[i].item, |
1561 | line->elements[i].indent); |
1562 | } |
1563 | |
1564 | i++; |
1565 | } |
1566 | printf("\"\n"); |
1567 | } else { |
1568 | line = getLineByType(LT_KERNELARGS, entry->lines); |
1569 | if (line) { |
1570 | char * s; |
1571 | |
1572 | printf("args=\""); |
1573 | i = 1; |
1574 | while (i < line->numElements) { |
1575 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
1576 | root = line->elements[i].item + 5; |
1577 | } else { |
1578 | s = line->elements[i].item; |
1579 | |
1580 | printf("%s%s", s, line->elements[i].indent); |
1581 | } |
1582 | |
1583 | i++; |
1584 | } |
1585 | |
1586 | s = line->elements[i - 1].indent; |
1587 | printf("\"\n"); |
1588 | } |
1589 | } |
1590 | |
1591 | if (!root) { |
1592 | line = getLineByType(LT_ROOT, entry->lines); |
1593 | if (line && line->numElements >= 2) |
1594 | root=line->elements[1].item; |
1595 | } |
1596 | |
1597 | if (root) { |
1598 | char * s = alloca(strlen(root) + 1); |
1599 | |
1600 | strcpy(s, root); |
1601 | if (s[strlen(s) - 1] == '"') |
1602 | s[strlen(s) - 1] = '\0'; |
1603 | /* make sure the root doesn't have a trailing " */ |
1604 | printf("root=%s\n", s); |
1605 | } |
1606 | |
1607 | line = getLineByType(LT_INITRD, entry->lines); |
1608 | |
1609 | if (line && line->numElements >= 2) { |
1610 | printf("initrd=%s", prefix); |
1611 | for (i = 1; i < line->numElements; i++) |
1612 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
1613 | printf("\n"); |
1614 | } |
1615 | } |
1616 | |
1617 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { |
1618 | FILE * in; |
1619 | char buf[1024]; |
1620 | char * chptr; |
1621 | char * start; |
1622 | char * param; |
1623 | |
1624 | in = fopen("/etc/conf.d/grub", "r"); |
1625 | if (!in) return 1; |
1626 | |
1627 | if (lbaPtr) *lbaPtr = 0; |
1628 | if (bootPtr) *bootPtr = NULL; |
1629 | |
1630 | while (fgets(buf, sizeof(buf), in)) { |
1631 | start = buf; |
1632 | while (isspace(*start)) start++; |
1633 | if (*start == '#') continue; |
1634 | |
1635 | chptr = strchr(start, '='); |
1636 | if (!chptr) continue; |
1637 | chptr--; |
1638 | while (*chptr && isspace(*chptr)) chptr--; |
1639 | chptr++; |
1640 | *chptr = '\0'; |
1641 | |
1642 | param = chptr + 1; |
1643 | while (*param && isspace(*param)) param++; |
1644 | if (*param == '=') { |
1645 | param++; |
1646 | while (*param && isspace(*param)) param++; |
1647 | } |
1648 | |
1649 | chptr = param; |
1650 | while (*chptr && !isspace(*chptr)) chptr++; |
1651 | *chptr = '\0'; |
1652 | |
1653 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
1654 | *lbaPtr = 1; |
1655 | else if (!strcmp(start, "boot") && bootPtr) |
1656 | *bootPtr = strdup(param); |
1657 | } |
1658 | |
1659 | fclose(in); |
1660 | |
1661 | return 0; |
1662 | } |
1663 | |
1664 | void dumpSysconfigGrub(void) { |
1665 | char * boot; |
1666 | int lba; |
1667 | |
1668 | if (!parseSysconfigGrub(&lba, &boot)) { |
1669 | if (lba) printf("lba\n"); |
1670 | if (boot) printf("boot=%s\n", boot); |
1671 | } |
1672 | } |
1673 | |
1674 | int displayInfo(struct grubConfig * config, char * kernel, |
1675 | const char * prefix) { |
1676 | int i = 0; |
1677 | struct singleEntry * entry; |
1678 | struct singleLine * line; |
1679 | |
1680 | entry = findEntryByPath(config, kernel, prefix, &i); |
1681 | if (!entry) { |
1682 | fprintf(stderr, _("grubby: kernel not found\n")); |
1683 | return 1; |
1684 | } |
1685 | |
1686 | /* this is a horrible hack to support /etc/conf.d/grub; there must |
1687 | be a better way */ |
1688 | if (config->cfi == &grubConfigType) { |
1689 | dumpSysconfigGrub(); |
1690 | } else { |
1691 | line = getLineByType(LT_BOOT, config->theLines); |
1692 | if (line && line->numElements >= 1) { |
1693 | printf("boot=%s\n", line->elements[1].item); |
1694 | } |
1695 | |
1696 | line = getLineByType(LT_LBA, config->theLines); |
1697 | if (line) printf("lba\n"); |
1698 | } |
1699 | |
1700 | displayEntry(entry, prefix, i); |
1701 | |
1702 | i++; |
1703 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
1704 | displayEntry(entry, prefix, i); |
1705 | i++; |
1706 | } |
1707 | |
1708 | return 0; |
1709 | } |
1710 | |
1711 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
1712 | struct singleLine * tmplLine, |
1713 | struct singleLine * prevLine, |
1714 | const char * val, |
1715 | struct configFileInfo * cfi) |
1716 | { |
1717 | struct singleLine * newLine = lineDup(tmplLine); |
1718 | |
1719 | if (val) { |
1720 | /* override the inherited value with our own. |
1721 | * This is a little weak because it only applies to elements[1] |
1722 | */ |
1723 | if (newLine->numElements > 1) |
1724 | removeElement(newLine, 1); |
1725 | insertElement(newLine, val, 1, cfi); |
1726 | |
1727 | /* but try to keep the rootspec from the template... sigh */ |
1728 | if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD)) { |
1729 | char * rootspec = getRootSpecifier(tmplLine->elements[1].item); |
1730 | if (rootspec != NULL) { |
1731 | free(newLine->elements[1].item); |
1732 | newLine->elements[1].item = |
1733 | sdupprintf("%s%s", rootspec, val); |
1734 | } |
1735 | } |
1736 | } |
1737 | |
1738 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? |
1739 | newLine->elements[0].item : ""); |
1740 | |
1741 | if (!entry->lines) { |
1742 | /* first one on the list */ |
1743 | entry->lines = newLine; |
1744 | } else if (prevLine) { |
1745 | /* add after prevLine */ |
1746 | newLine->next = prevLine->next; |
1747 | prevLine->next = newLine; |
1748 | } |
1749 | |
1750 | return newLine; |
1751 | } |
1752 | |
1753 | /* val may be NULL */ |
1754 | struct singleLine * addLine(struct singleEntry * entry, |
1755 | struct configFileInfo * cfi, |
1756 | enum lineType_e type, char * defaultIndent, |
1757 | const char * val) { |
1758 | struct singleLine * line, * prev; |
1759 | struct keywordTypes * kw; |
1760 | struct singleLine tmpl; |
1761 | |
1762 | /* NB: This function shouldn't allocate items on the heap, rather on the |
1763 | * stack since it calls addLineTmpl which will make copies. |
1764 | */ |
1765 | |
1766 | if (type == LT_TITLE && cfi->titleBracketed) { |
1767 | /* we're doing a bracketed title (zipl) */ |
1768 | tmpl.type = type; |
1769 | tmpl.numElements = 1; |
1770 | tmpl.elements = alloca(sizeof(*tmpl.elements)); |
1771 | tmpl.elements[0].item = alloca(strlen(val)+3); |
1772 | sprintf(tmpl.elements[0].item, "[%s]", val); |
1773 | tmpl.elements[0].indent = ""; |
1774 | val = NULL; |
1775 | } else { |
1776 | kw = getKeywordByType(type, cfi); |
1777 | if (!kw) abort(); |
1778 | tmpl.type = type; |
1779 | tmpl.numElements = val ? 2 : 1; |
1780 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
1781 | tmpl.elements[0].item = kw->key; |
1782 | tmpl.elements[0].indent = alloca(2); |
1783 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
1784 | if (val) { |
1785 | tmpl.elements[1].item = (char *)val; |
1786 | tmpl.elements[1].indent = ""; |
1787 | } |
1788 | } |
1789 | |
1790 | /* The last non-empty line gives us the indention to us and the line |
1791 | to insert after. Note that comments are considered empty lines, which |
1792 | may not be ideal? If there are no lines or we are looking at the |
1793 | first line, we use defaultIndent (the first line is normally indented |
1794 | differently from the rest) */ |
1795 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
1796 | if (line->numElements) prev = line; |
1797 | /* fall back on the last line if prev isn't otherwise set */ |
1798 | if (!line->next && !prev) prev = line; |
1799 | } |
1800 | |
1801 | if (prev == entry->lines) |
1802 | tmpl.indent = defaultIndent ?: ""; |
1803 | else |
1804 | tmpl.indent = prev->indent; |
1805 | |
1806 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
1807 | } |
1808 | |
1809 | void removeLine(struct singleEntry * entry, struct singleLine * line) { |
1810 | struct singleLine * prev; |
1811 | int i; |
1812 | |
1813 | for (i = 0; i < line->numElements; i++) { |
1814 | free(line->elements[i].item); |
1815 | free(line->elements[i].indent); |
1816 | } |
1817 | free(line->elements); |
1818 | free(line->indent); |
1819 | |
1820 | if (line == entry->lines) { |
1821 | entry->lines = line->next; |
1822 | } else { |
1823 | prev = entry->lines; |
1824 | while (prev->next != line) prev = prev->next; |
1825 | prev->next = line->next; |
1826 | } |
1827 | |
1828 | free(line); |
1829 | } |
1830 | |
1831 | static void insertElement(struct singleLine * line, |
1832 | const char * item, int insertHere, |
1833 | struct configFileInfo * cfi) |
1834 | { |
1835 | struct keywordTypes * kw; |
1836 | char indent[2] = ""; |
1837 | |
1838 | /* sanity check */ |
1839 | if (insertHere > line->numElements) { |
1840 | dbgPrintf("insertElement() adjusting insertHere from %d to %d\n", |
1841 | insertHere, line->numElements); |
1842 | insertHere = line->numElements; |
1843 | } |
1844 | |
1845 | line->elements = realloc(line->elements, (line->numElements + 1) * |
1846 | sizeof(*line->elements)); |
1847 | memmove(&line->elements[insertHere+1], |
1848 | &line->elements[insertHere], |
1849 | (line->numElements - insertHere) * |
1850 | sizeof(*line->elements)); |
1851 | line->elements[insertHere].item = strdup(item); |
1852 | |
1853 | kw = getKeywordByType(line->type, cfi); |
1854 | |
1855 | if (line->numElements == 0) { |
1856 | indent[0] = '\0'; |
1857 | } else if (insertHere == 0) { |
1858 | indent[0] = kw->nextChar; |
1859 | } else if (kw->separatorChar != '\0') { |
1860 | indent[0] = kw->separatorChar; |
1861 | } else { |
1862 | indent[0] = ' '; |
1863 | } |
1864 | |
1865 | if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') { |
1866 | /* move the end-of-line forward */ |
1867 | line->elements[insertHere].indent = |
1868 | line->elements[insertHere-1].indent; |
1869 | line->elements[insertHere-1].indent = strdup(indent); |
1870 | } else { |
1871 | line->elements[insertHere].indent = strdup(indent); |
1872 | } |
1873 | |
1874 | line->numElements++; |
1875 | |
1876 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", |
1877 | line->elements[0].item, |
1878 | line->elements[insertHere].item, |
1879 | line->elements[insertHere].indent, |
1880 | insertHere); |
1881 | } |
1882 | |
1883 | static void removeElement(struct singleLine * line, int removeHere) { |
1884 | int i; |
1885 | |
1886 | /* sanity check */ |
1887 | if (removeHere >= line->numElements) return; |
1888 | |
1889 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, |
1890 | removeHere, line->elements[removeHere].item); |
1891 | |
1892 | free(line->elements[removeHere].item); |
1893 | |
1894 | if (removeHere > 1) { |
1895 | /* previous argument gets this argument's post-indentation */ |
1896 | free(line->elements[removeHere-1].indent); |
1897 | line->elements[removeHere-1].indent = |
1898 | line->elements[removeHere].indent; |
1899 | } else { |
1900 | free(line->elements[removeHere].indent); |
1901 | } |
1902 | |
1903 | /* now collapse the array, but don't bother to realloc smaller */ |
1904 | for (i = removeHere; i < line->numElements - 1; i++) |
1905 | line->elements[i] = line->elements[i + 1]; |
1906 | |
1907 | line->numElements--; |
1908 | } |
1909 | |
1910 | int argMatch(const char * one, const char * two) { |
1911 | char * first, * second; |
1912 | char * chptr; |
1913 | |
1914 | first = strcpy(alloca(strlen(one) + 1), one); |
1915 | second = strcpy(alloca(strlen(two) + 1), two); |
1916 | |
1917 | chptr = strchr(first, '='); |
1918 | if (chptr) *chptr = '\0'; |
1919 | |
1920 | chptr = strchr(second, '='); |
1921 | if (chptr) *chptr = '\0'; |
1922 | |
1923 | return strcmp(first, second); |
1924 | } |
1925 | |
1926 | int updateActualImage(struct grubConfig * cfg, const char * image, |
1927 | const char * prefix, const char * addArgs, |
1928 | const char * removeArgs, int multibootArgs) { |
1929 | struct singleEntry * entry; |
1930 | struct singleLine * line, * rootLine; |
1931 | int index = 0; |
1932 | int i, k; |
1933 | const char ** newArgs, ** oldArgs; |
1934 | const char ** arg; |
1935 | int useKernelArgs, useRoot; |
1936 | int firstElement; |
1937 | int *usedElements; |
1938 | int doreplace; |
1939 | |
1940 | if (!image) return 0; |
1941 | |
1942 | if (!addArgs) { |
1943 | newArgs = malloc(sizeof(*newArgs)); |
1944 | *newArgs = NULL; |
1945 | } else { |
1946 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
1947 | fprintf(stderr, |
1948 | _("grubby: error separating arguments '%s'\n"), addArgs); |
1949 | return 1; |
1950 | } |
1951 | } |
1952 | |
1953 | if (!removeArgs) { |
1954 | oldArgs = malloc(sizeof(*oldArgs)); |
1955 | *oldArgs = NULL; |
1956 | } else { |
1957 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
1958 | fprintf(stderr, |
1959 | _("grubby: error separating arguments '%s'\n"), removeArgs); |
1960 | free(newArgs); |
1961 | return 1; |
1962 | } |
1963 | } |
1964 | |
1965 | |
1966 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
1967 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); |
1968 | |
1969 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
1970 | && !multibootArgs); |
1971 | |
1972 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
1973 | |
1974 | if (multibootArgs && !entry->multiboot) |
1975 | continue; |
1976 | |
1977 | /* Determine where to put the args. If this config supports |
1978 | * LT_KERNELARGS, use that. Otherwise use |
1979 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. |
1980 | */ |
1981 | if (useKernelArgs) { |
1982 | line = getLineByType(LT_KERNELARGS, entry->lines); |
1983 | if (!line) { |
1984 | /* no LT_KERNELARGS, need to add it */ |
1985 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, |
1986 | cfg->secondaryIndent, NULL); |
1987 | } |
1988 | firstElement = 1; |
1989 | |
1990 | } else if (multibootArgs) { |
1991 | line = getLineByType(LT_HYPER, entry->lines); |
1992 | if (!line) { |
1993 | /* a multiboot entry without LT_HYPER? */ |
1994 | continue; |
1995 | } |
1996 | firstElement = 2; |
1997 | |
1998 | } else { |
1999 | line = getLineByType(LT_KERNEL|LT_MBMODULE, entry->lines); |
2000 | if (!line) { |
2001 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ |
2002 | continue; |
2003 | } |
2004 | firstElement = 2; |
2005 | } |
2006 | |
2007 | /* handle the elilo case which does: |
2008 | * append="hypervisor args -- kernel args" |
2009 | */ |
2010 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { |
2011 | /* this is a multiboot entry, make sure there's |
2012 | * -- on the args line |
2013 | */ |
2014 | for (i = firstElement; i < line->numElements; i++) { |
2015 | if (!strcmp(line->elements[i].item, "--")) |
2016 | break; |
2017 | } |
2018 | if (i == line->numElements) { |
2019 | /* assume all existing args are kernel args, |
2020 | * prepend -- to make it official |
2021 | */ |
2022 | insertElement(line, "--", firstElement, cfg->cfi); |
2023 | i = firstElement; |
2024 | } |
2025 | if (!multibootArgs) { |
2026 | /* kernel args start after the -- */ |
2027 | firstElement = i + 1; |
2028 | } |
2029 | } else if (cfg->cfi->mbConcatArgs) { |
2030 | /* this is a non-multiboot entry, remove hyper args */ |
2031 | for (i = firstElement; i < line->numElements; i++) { |
2032 | if (!strcmp(line->elements[i].item, "--")) |
2033 | break; |
2034 | } |
2035 | if (i < line->numElements) { |
2036 | /* remove args up to -- */ |
2037 | while (strcmp(line->elements[firstElement].item, "--")) |
2038 | removeElement(line, firstElement); |
2039 | /* remove -- */ |
2040 | removeElement(line, firstElement); |
2041 | } |
2042 | } |
2043 | |
2044 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
2045 | |
2046 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
2047 | |
2048 | doreplace = 1; |
2049 | for (i = firstElement; i < line->numElements; i++) { |
2050 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2051 | !strcmp(line->elements[i].item, "--")) |
2052 | { |
2053 | /* reached the end of hyper args, insert here */ |
2054 | doreplace = 0; |
2055 | break; |
2056 | } |
2057 | if (usedElements[i]) |
2058 | continue; |
2059 | if (!argMatch(line->elements[i].item, *arg)) { |
2060 | usedElements[i]=1; |
2061 | break; |
2062 | } |
2063 | } |
2064 | |
2065 | if (i < line->numElements && doreplace) { |
2066 | /* direct replacement */ |
2067 | free(line->elements[i].item); |
2068 | line->elements[i].item = strdup(*arg); |
2069 | |
2070 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
2071 | /* root= replacement */ |
2072 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2073 | if (rootLine) { |
2074 | free(rootLine->elements[1].item); |
2075 | rootLine->elements[1].item = strdup(*arg + 5); |
2076 | } else { |
2077 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, |
2078 | cfg->secondaryIndent, *arg + 5); |
2079 | } |
2080 | } |
2081 | |
2082 | else { |
2083 | /* insert/append */ |
2084 | insertElement(line, *arg, i, cfg->cfi); |
2085 | usedElements = realloc(usedElements, line->numElements * |
2086 | sizeof(*usedElements)); |
2087 | memmove(&usedElements[i + 1], &usedElements[i], |
2088 | line->numElements - i - 1); |
2089 | usedElements[i] = 1; |
2090 | |
2091 | /* if we updated a root= here even though there is a |
2092 | LT_ROOT available we need to remove the LT_ROOT entry |
2093 | (this will happen if we switch from a device to a label) */ |
2094 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
2095 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2096 | if (rootLine) |
2097 | removeLine(entry, rootLine); |
2098 | } |
2099 | } |
2100 | } |
2101 | |
2102 | free(usedElements); |
2103 | |
2104 | for (arg = oldArgs; *arg; arg++) { |
2105 | for (i = firstElement; i < line->numElements; i++) { |
2106 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2107 | !strcmp(line->elements[i].item, "--")) |
2108 | /* reached the end of hyper args, stop here */ |
2109 | break; |
2110 | if (!argMatch(line->elements[i].item, *arg)) { |
2111 | removeElement(line, i); |
2112 | break; |
2113 | } |
2114 | } |
2115 | /* handle removing LT_ROOT line too */ |
2116 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
2117 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2118 | if (rootLine) |
2119 | removeLine(entry, rootLine); |
2120 | } |
2121 | } |
2122 | |
2123 | if (line->numElements == 1) { |
2124 | /* don't need the line at all (note it has to be a |
2125 | LT_KERNELARGS for this to happen */ |
2126 | removeLine(entry, line); |
2127 | } |
2128 | } |
2129 | |
2130 | free(newArgs); |
2131 | free(oldArgs); |
2132 | |
2133 | return 0; |
2134 | } |
2135 | |
2136 | int updateImage(struct grubConfig * cfg, const char * image, |
2137 | const char * prefix, const char * addArgs, |
2138 | const char * removeArgs, |
2139 | const char * addMBArgs, const char * removeMBArgs) { |
2140 | int rc = 0; |
2141 | |
2142 | if (!image) return rc; |
2143 | |
2144 | /* update the main args first... */ |
2145 | if (addArgs || removeArgs) |
2146 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); |
2147 | if (rc) return rc; |
2148 | |
2149 | /* and now any multiboot args */ |
2150 | if (addMBArgs || removeMBArgs) |
2151 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); |
2152 | return rc; |
2153 | } |
2154 | |
2155 | int updateInitrd(struct grubConfig * cfg, const char * image, |
2156 | const char * prefix, const char * initrd) { |
2157 | struct singleEntry * entry; |
2158 | struct singleLine * line, * kernelLine; |
2159 | int index = 0; |
2160 | |
2161 | if (!image) return 0; |
2162 | |
2163 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
2164 | kernelLine = getLineByType(LT_KERNEL, entry->lines); |
2165 | if (!kernelLine) continue; |
2166 | |
2167 | line = getLineByType(LT_INITRD, entry->lines); |
2168 | if (line) |
2169 | removeLine(entry, line); |
2170 | if (prefix) { |
2171 | int prefixLen = strlen(prefix); |
2172 | if (!strncmp(initrd, prefix, prefixLen)) |
2173 | initrd += prefixLen; |
2174 | } |
2175 | line = addLine(entry, cfg->cfi, LT_INITRD, kernelLine->indent, initrd); |
2176 | if (!line) return 1; |
2177 | break; |
2178 | } |
2179 | |
2180 | return 0; |
2181 | } |
2182 | |
2183 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { |
2184 | int fd; |
2185 | unsigned char bootSect[512]; |
2186 | int offset; |
2187 | |
2188 | fd = open(device, O_RDONLY); |
2189 | if (fd < 0) { |
2190 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
2191 | device, strerror(errno)); |
2192 | return 1; |
2193 | } |
2194 | |
2195 | if (read(fd, bootSect, 512) != 512) { |
2196 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2197 | device, strerror(errno)); |
2198 | return 1; |
2199 | } |
2200 | close(fd); |
2201 | |
2202 | /* first three bytes should match, a jmp short should be in there */ |
2203 | if (memcmp(boot, bootSect, 3)) |
2204 | return 0; |
2205 | |
2206 | if (boot[1] == 0xeb) { |
2207 | offset = boot[2] + 2; |
2208 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
2209 | offset = (boot[3] << 8) + boot[2] + 2; |
2210 | } else if (boot[0] == 0xeb) { |
2211 | offset = boot[1] + 2; |
2212 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
2213 | offset = (boot[2] << 8) + boot[1] + 2; |
2214 | } else { |
2215 | return 0; |
2216 | } |
2217 | |
2218 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
2219 | return 0; |
2220 | |
2221 | return 2; |
2222 | } |
2223 | |
2224 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { |
2225 | int fd; |
2226 | char buf[65536]; |
2227 | char * end; |
2228 | char * chptr; |
2229 | char * chptr2; |
2230 | int rc; |
2231 | |
2232 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
2233 | *raw* devices listed in there */ |
2234 | |
2235 | if (!strncmp(mdDev, "/dev/", 5)) |
2236 | mdDev += 5; |
2237 | |
2238 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
2239 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
2240 | strerror(errno)); |
2241 | return 2; |
2242 | } |
2243 | |
2244 | rc = read(fd, buf, sizeof(buf) - 1); |
2245 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
2246 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
2247 | strerror(errno)); |
2248 | close(fd); |
2249 | return 2; |
2250 | } |
2251 | close(fd); |
2252 | buf[rc] = '\0'; |
2253 | |
2254 | chptr = buf; |
2255 | while (*chptr) { |
2256 | end = strchr(chptr, '\n'); |
2257 | if (!end) break; |
2258 | *end = '\0'; |
2259 | |
2260 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
2261 | chptr[strlen(mdDev)] == ' ') { |
2262 | |
2263 | /* found the device */ |
2264 | while (*chptr && *chptr != ':') chptr++; |
2265 | chptr++; |
2266 | while (*chptr && isspace(*chptr)) chptr++; |
2267 | |
2268 | /* skip the "active" bit */ |
2269 | while (*chptr && !isspace(*chptr)) chptr++; |
2270 | while (*chptr && isspace(*chptr)) chptr++; |
2271 | |
2272 | /* skip the raid level */ |
2273 | while (*chptr && !isspace(*chptr)) chptr++; |
2274 | while (*chptr && isspace(*chptr)) chptr++; |
2275 | |
2276 | /* everything else is partition stuff */ |
2277 | while (*chptr) { |
2278 | chptr2 = chptr; |
2279 | while (*chptr2 && *chptr2 != '[') chptr2++; |
2280 | if (!*chptr2) break; |
2281 | |
2282 | /* yank off the numbers at the end */ |
2283 | chptr2--; |
2284 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; |
2285 | chptr2++; |
2286 | *chptr2 = '\0'; |
2287 | |
2288 | /* Better, now we need the /dev/ back. We're done with |
2289 | * everything before this point, so we can just put |
2290 | * the /dev/ part there. There will always be room. */ |
2291 | memcpy(chptr - 5, "/dev/", 5); |
2292 | rc = checkDeviceBootloader(chptr - 5, boot); |
2293 | if (rc != 2) { |
2294 | return rc; |
2295 | } |
2296 | |
2297 | chptr = chptr2 + 1; |
2298 | /* skip the [11] bit */ |
2299 | while (*chptr && !isspace(*chptr)) chptr++; |
2300 | /* and move to the next one */ |
2301 | while (*chptr && isspace(*chptr)) chptr++; |
2302 | } |
2303 | |
2304 | /* we're good to go */ |
2305 | return 2; |
2306 | } |
2307 | |
2308 | chptr = end + 1; |
2309 | } |
2310 | |
2311 | fprintf(stderr, |
2312 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
2313 | mdDev); |
2314 | return 0; |
2315 | } |
2316 | |
2317 | int checkForLilo(struct grubConfig * config) { |
2318 | int fd; |
2319 | unsigned char boot[512]; |
2320 | struct singleLine * line; |
2321 | |
2322 | for (line = config->theLines; line; line = line->next) |
2323 | if (line->type == LT_BOOT) break; |
2324 | |
2325 | if (!line) { |
2326 | fprintf(stderr, |
2327 | _("grubby: no boot line found in lilo configuration\n")); |
2328 | return 1; |
2329 | } |
2330 | |
2331 | if (line->numElements != 2) return 1; |
2332 | |
2333 | fd = open("/boot/boot.b", O_RDONLY); |
2334 | if (fd < 0) { |
2335 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
2336 | "/boot/boot.b", strerror(errno)); |
2337 | return 1; |
2338 | } |
2339 | |
2340 | if (read(fd, boot, 512) != 512) { |
2341 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2342 | "/boot/boot.b", strerror(errno)); |
2343 | return 1; |
2344 | } |
2345 | close(fd); |
2346 | |
2347 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
2348 | return checkLiloOnRaid(line->elements[1].item, boot); |
2349 | |
2350 | return checkDeviceBootloader(line->elements[1].item, boot); |
2351 | } |
2352 | |
2353 | int checkForGrub(struct grubConfig * config) { |
2354 | int fd; |
2355 | unsigned char bootSect[512]; |
2356 | char * boot; |
2357 | |
2358 | if (parseSysconfigGrub(NULL, &boot)) |
2359 | return 0; |
2360 | |
2361 | /* assume grub is not installed -- not an error condition */ |
2362 | if (!boot) |
2363 | return 0; |
2364 | |
2365 | fd = open("/boot/grub/stage1", O_RDONLY); |
2366 | if (fd < 0) |
2367 | /* this doesn't exist if grub hasn't been installed */ |
2368 | return 0; |
2369 | |
2370 | if (read(fd, bootSect, 512) != 512) { |
2371 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2372 | "/boot/grub/stage1", strerror(errno)); |
2373 | close(fd); |
2374 | return 1; |
2375 | } |
2376 | close(fd); |
2377 | |
2378 | return checkDeviceBootloader(boot, bootSect); |
2379 | } |
2380 | |
2381 | int checkForExtLinux(struct grubConfig * config) { |
2382 | int fd; |
2383 | unsigned char bootSect[512]; |
2384 | char * boot; |
2385 | char executable[] = "/boot/extlinux/extlinux"; |
2386 | |
2387 | printf("entered: checkForExtLinux()\n"); |
2388 | |
2389 | if (parseSysconfigGrub(NULL, &boot)) |
2390 | return 0; |
2391 | |
2392 | /* assume grub is not installed -- not an error condition */ |
2393 | if (!boot) |
2394 | return 0; |
2395 | |
2396 | fd = open(executable, O_RDONLY); |
2397 | if (fd < 0) |
2398 | /* this doesn't exist if grub hasn't been installed */ |
2399 | return 0; |
2400 | |
2401 | if (read(fd, bootSect, 512) != 512) { |
2402 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
2403 | executable, strerror(errno)); |
2404 | return 1; |
2405 | } |
2406 | close(fd); |
2407 | |
2408 | return checkDeviceBootloader(boot, bootSect); |
2409 | } |
2410 | |
2411 | static char * getRootSpecifier(char * str) { |
2412 | char * idx, * rootspec = NULL; |
2413 | |
2414 | if (*str == '(') { |
2415 | idx = rootspec = strdup(str); |
2416 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; |
2417 | *(++idx) = '\0'; |
2418 | } |
2419 | return rootspec; |
2420 | } |
2421 | |
2422 | static char * getInitrdVal(struct grubConfig * config, |
2423 | const char * prefix, struct singleLine *tmplLine, |
2424 | const char * newKernelInitrd, |
2425 | char ** extraInitrds, int extraInitrdCount) |
2426 | { |
2427 | char *initrdVal, *end; |
2428 | int i; |
2429 | size_t totalSize; |
2430 | size_t prefixLen; |
2431 | char separatorChar; |
2432 | |
2433 | prefixLen = strlen(prefix); |
2434 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */; |
2435 | |
2436 | for (i = 0; i < extraInitrdCount; i++) { |
2437 | totalSize += sizeof(separatorChar); |
2438 | totalSize += strlen(extraInitrds[i]) - prefixLen; |
2439 | } |
2440 | |
2441 | initrdVal = end = malloc(totalSize); |
2442 | |
2443 | end = stpcpy (end, newKernelInitrd + prefixLen); |
2444 | |
2445 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; |
2446 | for (i = 0; i < extraInitrdCount; i++) { |
2447 | const char *extraInitrd; |
2448 | int j; |
2449 | |
2450 | extraInitrd = extraInitrds[i] + prefixLen; |
2451 | /* Don't add entries that are already there */ |
2452 | if (tmplLine != NULL) { |
2453 | for (j = 2; j < tmplLine->numElements; j++) |
2454 | if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0) |
2455 | break; |
2456 | |
2457 | if (j != tmplLine->numElements) |
2458 | continue; |
2459 | } |
2460 | |
2461 | *end++ = separatorChar; |
2462 | end = stpcpy(end, extraInitrd); |
2463 | } |
2464 | |
2465 | return initrdVal; |
2466 | } |
2467 | |
2468 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, |
2469 | const char * prefix, |
2470 | char * newKernelPath, char * newKernelTitle, |
2471 | char * newKernelArgs, char * newKernelInitrd, |
2472 | char ** extraInitrds, int extraInitrdCount, |
2473 | char * newMBKernel, char * newMBKernelArgs) { |
2474 | struct singleEntry * new; |
2475 | struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL; |
2476 | int needs; |
2477 | char * chptr; |
2478 | |
2479 | if (!newKernelPath) return 0; |
2480 | |
2481 | /* if the newKernelTitle is too long silently munge it into something |
2482 | * we can live with. truncating is first check, then we'll just mess with |
2483 | * it until it looks better */ |
2484 | if (config->cfi->maxTitleLength && |
2485 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
2486 | char * buf = alloca(config->cfi->maxTitleLength + 7); |
2487 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); |
2488 | int i = 1; |
2489 | |
2490 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); |
2491 | while (findEntryByPath(config, buf, NULL, NULL)) { |
2492 | sprintf(numBuf, "%d", i++); |
2493 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
2494 | } |
2495 | |
2496 | newKernelTitle = buf + 6; |
2497 | } |
2498 | |
2499 | new = malloc(sizeof(*new)); |
2500 | new->skip = 0; |
2501 | new->multiboot = 0; |
2502 | new->next = config->entries; |
2503 | new->lines = NULL; |
2504 | config->entries = new; |
2505 | |
2506 | /* copy/update from the template */ |
2507 | needs = NEED_KERNEL | NEED_TITLE; |
2508 | if (newKernelInitrd) |
2509 | needs |= NEED_INITRD; |
2510 | if (newMBKernel) { |
2511 | needs |= NEED_MB; |
2512 | new->multiboot = 1; |
2513 | } |
2514 | |
2515 | if (template) { |
2516 | for (masterLine = template->lines; |
2517 | masterLine && (tmplLine = lineDup(masterLine)); |
2518 | lineFree(tmplLine), masterLine = masterLine->next) |
2519 | { |
2520 | dbgPrintf("addNewKernel processing %d\n", tmplLine->type); |
2521 | |
2522 | /* skip comments */ |
2523 | chptr = tmplLine->indent; |
2524 | while (*chptr && isspace(*chptr)) chptr++; |
2525 | if (*chptr == '#') continue; |
2526 | |
2527 | if (tmplLine->type == LT_KERNEL && |
2528 | tmplLine->numElements >= 2) { |
2529 | if (!template->multiboot && (needs & NEED_MB)) { |
2530 | /* it's not a multiboot template and this is the kernel |
2531 | * line. Try to be intelligent about inserting the |
2532 | * hypervisor at the same time. |
2533 | */ |
2534 | if (config->cfi->mbHyperFirst) { |
2535 | /* insert the hypervisor first */ |
2536 | newLine = addLine(new, config->cfi, LT_HYPER, |
2537 | tmplLine->indent, |
2538 | newMBKernel + strlen(prefix)); |
2539 | /* set up for adding the kernel line */ |
2540 | free(tmplLine->indent); |
2541 | tmplLine->indent = strdup(config->secondaryIndent); |
2542 | needs &= ~NEED_MB; |
2543 | } |
2544 | if (needs & NEED_KERNEL) { |
2545 | /* use addLineTmpl to preserve line elements, |
2546 | * otherwise we could just call addLine. Unfortunately |
2547 | * this means making some changes to the template |
2548 | * such as the indent change above and the type |
2549 | * change below. |
2550 | */ |
2551 | struct keywordTypes * mbm_kw = |
2552 | getKeywordByType(LT_MBMODULE, config->cfi); |
2553 | if (mbm_kw) { |
2554 | tmplLine->type = LT_MBMODULE; |
2555 | free(tmplLine->elements[0].item); |
2556 | tmplLine->elements[0].item = strdup(mbm_kw->key); |
2557 | } |
2558 | newLine = addLineTmpl(new, tmplLine, newLine, |
2559 | newKernelPath + strlen(prefix), config->cfi); |
2560 | needs &= ~NEED_KERNEL; |
2561 | } |
2562 | if (needs & NEED_MB) { /* !mbHyperFirst */ |
2563 | newLine = addLine(new, config->cfi, LT_HYPER, |
2564 | config->secondaryIndent, |
2565 | newMBKernel + strlen(prefix)); |
2566 | needs &= ~NEED_MB; |
2567 | } |
2568 | } else if (needs & NEED_KERNEL) { |
2569 | newLine = addLineTmpl(new, tmplLine, newLine, |
2570 | newKernelPath + strlen(prefix), config->cfi); |
2571 | needs &= ~NEED_KERNEL; |
2572 | } |
2573 | |
2574 | } else if (tmplLine->type == LT_HYPER && |
2575 | tmplLine->numElements >= 2) { |
2576 | if (needs & NEED_MB) { |
2577 | newLine = addLineTmpl(new, tmplLine, newLine, |
2578 | newMBKernel + strlen(prefix), config->cfi); |
2579 | needs &= ~NEED_MB; |
2580 | } |
2581 | |
2582 | } else if (tmplLine->type == LT_MBMODULE && |
2583 | tmplLine->numElements >= 2) { |
2584 | if (new->multiboot) { |
2585 | if (needs & NEED_KERNEL) { |
2586 | newLine = addLineTmpl(new, tmplLine, newLine, |
2587 | newKernelPath + |
2588 | strlen(prefix), config->cfi); |
2589 | needs &= ~NEED_KERNEL; |
2590 | } else if (config->cfi->mbInitRdIsModule && |
2591 | (needs & NEED_INITRD)) { |
2592 | char *initrdVal; |
2593 | initrdVal = getInitrdVal(config, prefix, tmplLine, |
2594 | newKernelInitrd, extraInitrds, |
2595 | extraInitrdCount); |
2596 | newLine = addLineTmpl(new, tmplLine, newLine, |
2597 | initrdVal, config->cfi); |
2598 | free(initrdVal); |
2599 | needs &= ~NEED_INITRD; |
2600 | } |
2601 | } else if (needs & NEED_KERNEL) { |
2602 | /* template is multi but new is not, |
2603 | * insert the kernel in the first module slot |
2604 | */ |
2605 | tmplLine->type = LT_KERNEL; |
2606 | free(tmplLine->elements[0].item); |
2607 | tmplLine->elements[0].item = |
2608 | strdup(getKeywordByType(LT_KERNEL, config->cfi)->key); |
2609 | newLine = addLineTmpl(new, tmplLine, newLine, |
2610 | newKernelPath + strlen(prefix), config->cfi); |
2611 | needs &= ~NEED_KERNEL; |
2612 | } else if (needs & NEED_INITRD) { |
2613 | char *initrdVal; |
2614 | /* template is multi but new is not, |
2615 | * insert the initrd in the second module slot |
2616 | */ |
2617 | tmplLine->type = LT_INITRD; |
2618 | free(tmplLine->elements[0].item); |
2619 | tmplLine->elements[0].item = |
2620 | strdup(getKeywordByType(LT_INITRD, config->cfi)->key); |
2621 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
2622 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
2623 | free(initrdVal); |
2624 | needs &= ~NEED_INITRD; |
2625 | } |
2626 | |
2627 | } else if (tmplLine->type == LT_INITRD && |
2628 | tmplLine->numElements >= 2) { |
2629 | if (needs & NEED_INITRD && |
2630 | new->multiboot && !template->multiboot && |
2631 | config->cfi->mbInitRdIsModule) { |
2632 | /* make sure we don't insert the module initrd |
2633 | * before the module kernel... if we don't do it here, |
2634 | * it will be inserted following the template. |
2635 | */ |
2636 | if (!needs & NEED_KERNEL) { |
2637 | char *initrdVal; |
2638 | |
2639 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
2640 | newLine = addLine(new, config->cfi, LT_MBMODULE, |
2641 | config->secondaryIndent, |
2642 | initrdVal); |
2643 | free(initrdVal); |
2644 | needs &= ~NEED_INITRD; |
2645 | } |
2646 | } else if (needs & NEED_INITRD) { |
2647 | char *initrdVal; |
2648 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
2649 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
2650 | free(initrdVal); |
2651 | needs &= ~NEED_INITRD; |
2652 | } |
2653 | |
2654 | } else if (tmplLine->type == LT_TITLE && |
2655 | (needs & NEED_TITLE)) { |
2656 | if (tmplLine->numElements >= 2) { |
2657 | newLine = addLineTmpl(new, tmplLine, newLine, |
2658 | newKernelTitle, config->cfi); |
2659 | needs &= ~NEED_TITLE; |
2660 | } else if (tmplLine->numElements == 1 && |
2661 | config->cfi->titleBracketed) { |
2662 | /* addLineTmpl doesn't handle titleBracketed */ |
2663 | newLine = addLine(new, config->cfi, LT_TITLE, |
2664 | tmplLine->indent, newKernelTitle); |
2665 | needs &= ~NEED_TITLE; |
2666 | } |
2667 | |
2668 | } else { |
2669 | /* pass through other lines from the template */ |
2670 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); |
2671 | } |
2672 | } |
2673 | |
2674 | } else { |
2675 | /* don't have a template, so start the entry with the |
2676 | * appropriate starting line |
2677 | */ |
2678 | switch (config->cfi->entryStart) { |
2679 | case LT_KERNEL: |
2680 | if (new->multiboot && config->cfi->mbHyperFirst) { |
2681 | /* fall through to LT_HYPER */ |
2682 | } else { |
2683 | newLine = addLine(new, config->cfi, LT_KERNEL, |
2684 | config->primaryIndent, |
2685 | newKernelPath + strlen(prefix)); |
2686 | needs &= ~NEED_KERNEL; |
2687 | break; |
2688 | } |
2689 | |
2690 | case LT_HYPER: |
2691 | newLine = addLine(new, config->cfi, LT_HYPER, |
2692 | config->primaryIndent, |
2693 | newMBKernel + strlen(prefix)); |
2694 | needs &= ~NEED_MB; |
2695 | break; |
2696 | |
2697 | case LT_TITLE: |
2698 | if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above) |
2699 | char * templabel; |
2700 | int x = 0, y = 0; |
2701 | |
2702 | templabel = strdup(newKernelTitle); |
2703 | while( templabel[x]){ |
2704 | if( templabel[x] == ' ' ){ |
2705 | y = x; |
2706 | while( templabel[y] ){ |
2707 | templabel[y] = templabel[y+1]; |
2708 | y++; |
2709 | } |
2710 | } |
2711 | x++; |
2712 | } |
2713 | newLine = addLine(new, config->cfi, LT_TITLE, |
2714 | config->primaryIndent, templabel); |
2715 | free(templabel); |
2716 | }else{ |
2717 | newLine = addLine(new, config->cfi, LT_TITLE, |
2718 | config->primaryIndent, newKernelTitle); |
2719 | } |
2720 | needs &= ~NEED_TITLE; |
2721 | break; |
2722 | |
2723 | default: |
2724 | abort(); |
2725 | } |
2726 | } |
2727 | |
2728 | /* add the remainder of the lines, i.e. those that either |
2729 | * weren't present in the template, or in the case of no template, |
2730 | * all the lines following the entryStart. |
2731 | */ |
2732 | if (needs & NEED_TITLE) { |
2733 | newLine = addLine(new, config->cfi, LT_TITLE, |
2734 | config->secondaryIndent, |
2735 | newKernelTitle); |
2736 | needs &= ~NEED_TITLE; |
2737 | } |
2738 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
2739 | newLine = addLine(new, config->cfi, LT_HYPER, |
2740 | config->secondaryIndent, |
2741 | newMBKernel + strlen(prefix)); |
2742 | needs &= ~NEED_MB; |
2743 | } |
2744 | if (needs & NEED_KERNEL) { |
2745 | newLine = addLine(new, config->cfi, |
2746 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
2747 | config->cfi)) ? |
2748 | LT_MBMODULE : LT_KERNEL, |
2749 | config->secondaryIndent, |
2750 | newKernelPath + strlen(prefix)); |
2751 | needs &= ~NEED_KERNEL; |
2752 | } |
2753 | if (needs & NEED_MB) { |
2754 | newLine = addLine(new, config->cfi, LT_HYPER, |
2755 | config->secondaryIndent, |
2756 | newMBKernel + strlen(prefix)); |
2757 | needs &= ~NEED_MB; |
2758 | } |
2759 | if (needs & NEED_INITRD) { |
2760 | char *initrdVal; |
2761 | initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount); |
2762 | newLine = addLine(new, config->cfi, |
2763 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
2764 | config->cfi)) ? |
2765 | LT_MBMODULE : LT_INITRD, |
2766 | config->secondaryIndent, |
2767 | initrdVal); |
2768 | free(initrdVal); |
2769 | needs &= ~NEED_INITRD; |
2770 | } |
2771 | |
2772 | if (needs) { |
2773 | printf(_("grubby: needs=%d, aborting\n"), needs); |
2774 | abort(); |
2775 | } |
2776 | |
2777 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, |
2778 | newMBKernelArgs, NULL)) return 1; |
2779 | |
2780 | return 0; |
2781 | } |
2782 | |
2783 | static void traceback(int signum) |
2784 | { |
2785 | void *array[40]; |
2786 | size_t size; |
2787 | |
2788 | signal(SIGSEGV, SIG_DFL); |
2789 | memset(array, '\0', sizeof (array)); |
2790 | size = backtrace(array, 40); |
2791 | |
2792 | fprintf(stderr, "grubby recieved SIGSEGV! Backtrace (%ld):\n", |
2793 | (unsigned long)size); |
2794 | backtrace_symbols_fd(array, size, STDERR_FILENO); |
2795 | exit(1); |
2796 | } |
2797 | |
2798 | int main(int argc, const char ** argv) { |
2799 | poptContext optCon; |
2800 | char * grubConfig = NULL; |
2801 | char * outputFile = NULL; |
2802 | int arg = 0; |
2803 | int flags = 0; |
2804 | int badImageOkay = 0; |
2805 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
2806 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
2807 | int configureExtLinux = 0; |
2808 | int bootloaderProbe = 0; |
2809 | int extraInitrdCount = 0; |
2810 | char * updateKernelPath = NULL; |
2811 | char * newKernelPath = NULL; |
2812 | char * removeKernelPath = NULL; |
2813 | char * newKernelArgs = NULL; |
2814 | char * newKernelInitrd = NULL; |
2815 | char * newKernelTitle = NULL; |
2816 | char * newKernelVersion = NULL; |
2817 | char * newMBKernel = NULL; |
2818 | char * newMBKernelArgs = NULL; |
2819 | char * removeMBKernelArgs = NULL; |
2820 | char * removeMBKernel = NULL; |
2821 | char * bootPrefix = NULL; |
2822 | char * defaultKernel = NULL; |
2823 | char * removeArgs = NULL; |
2824 | char * kernelInfo = NULL; |
2825 | char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
2826 | const char * chptr = NULL; |
2827 | struct configFileInfo * cfi = NULL; |
2828 | struct grubConfig * config; |
2829 | struct singleEntry * template = NULL; |
2830 | int copyDefault = 0, makeDefault = 0; |
2831 | int displayDefault = 0; |
2832 | struct poptOption options[] = { |
2833 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
2834 | _("add an entry for the specified kernel"), _("kernel-path") }, |
2835 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
2836 | _("add an entry for the specified multiboot kernel"), NULL }, |
2837 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
2838 | _("default arguments for the new kernel or new arguments for " |
2839 | "kernel being updated"), _("args") }, |
2840 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
2841 | _("default arguments for the new multiboot kernel or " |
2842 | "new arguments for multiboot kernel being updated"), NULL }, |
2843 | { "bad-image-okay", 0, 0, &badImageOkay, 0, |
2844 | _("don't sanity check images in boot entries (for testing only)"), |
2845 | NULL }, |
2846 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
2847 | _("filestystem which contains /boot directory (for testing only)"), |
2848 | _("bootfs") }, |
2849 | #if defined(__i386__) || defined(__x86_64__) |
2850 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
2851 | _("check if lilo is installed on lilo.conf boot sector") }, |
2852 | #endif |
2853 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
2854 | _("path to grub config file to update (\"-\" for stdin)"), |
2855 | _("path") }, |
2856 | { "copy-default", 0, 0, ©Default, 0, |
2857 | _("use the default boot entry as a template for the new entry " |
2858 | "being added; if the default is not a linux image, or if " |
2859 | "the kernel referenced by the default image does not exist, " |
2860 | "the first linux entry whose kernel does exist is used as the " |
2861 | "template"), NULL }, |
2862 | { "default-kernel", 0, 0, &displayDefault, 0, |
2863 | _("display the path of the default kernel") }, |
2864 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
2865 | _("configure elilo bootloader") }, |
2866 | { "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
2867 | _("configure extlinux bootloader (from syslinux)") }, |
2868 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
2869 | _("configure grub bootloader") }, |
2870 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
2871 | _("display boot information for specified kernel"), |
2872 | _("kernel-path") }, |
2873 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
2874 | _("initrd image for the new kernel"), _("initrd-path") }, |
2875 | { "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
2876 | _("auxilliary initrd image for things other than the new kernel"), _("initrd-path") }, |
2877 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
2878 | _("configure lilo bootloader") }, |
2879 | { "make-default", 0, 0, &makeDefault, 0, |
2880 | _("make the newly added entry the default boot entry"), NULL }, |
2881 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
2882 | _("path to output updated config file (\"-\" for stdout)"), |
2883 | _("path") }, |
2884 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
2885 | _("remove kernel arguments"), NULL }, |
2886 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
2887 | _("remove multiboot kernel arguments"), NULL }, |
2888 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
2889 | _("remove all entries for the specified kernel"), |
2890 | _("kernel-path") }, |
2891 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
2892 | _("remove all entries for the specified multiboot kernel"), NULL }, |
2893 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
2894 | _("make the first entry referencing the specified kernel " |
2895 | "the default"), _("kernel-path") }, |
2896 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
2897 | _("configure silo bootloader") }, |
2898 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
2899 | _("title to use for the new kernel entry"), _("entry-title") }, |
2900 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
2901 | _("updated information for the specified kernel"), |
2902 | _("kernel-path") }, |
2903 | { "version", 'v', 0, NULL, 'v', |
2904 | _("print the version of this program and exit"), NULL }, |
2905 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
2906 | _("configure yaboot bootloader") }, |
2907 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
2908 | _("configure zipl bootloader") }, |
2909 | POPT_AUTOHELP |
2910 | { 0, 0, 0, 0, 0 } |
2911 | }; |
2912 | |
2913 | useextlinuxmenu=0; |
2914 | |
2915 | signal(SIGSEGV, traceback); |
2916 | |
2917 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
2918 | poptReadDefaultConfig(optCon, 1); |
2919 | |
2920 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
2921 | switch (arg) { |
2922 | case 'v': |
2923 | printf("grubby version %s\n", VERSION); |
2924 | exit(0); |
2925 | break; |
2926 | case 'i': |
2927 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { |
2928 | extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon)); |
2929 | } else { |
2930 | fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount); |
2931 | return 1; |
2932 | } |
2933 | break; |
2934 | } |
2935 | } |
2936 | |
2937 | if (arg < -1) { |
2938 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
2939 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
2940 | poptStrerror(arg)); |
2941 | return 1; |
2942 | } |
2943 | |
2944 | if ((chptr = poptGetArg(optCon))) { |
2945 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
2946 | return 1; |
2947 | } |
2948 | |
2949 | if ((configureLilo + configureGrub + configureELilo + |
2950 | configureYaboot + configureSilo + configureZipl + |
2951 | configureExtLinux ) > 1) { |
2952 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); |
2953 | return 1; |
2954 | } else if (bootloaderProbe && grubConfig) { |
2955 | fprintf(stderr, |
2956 | _("grubby: cannot specify config file with --bootloader-probe\n")); |
2957 | return 1; |
2958 | } else if (configureLilo) { |
2959 | cfi = &liloConfigType; |
2960 | } else if (configureGrub) { |
2961 | cfi = &grubConfigType; |
2962 | } else if (configureELilo) { |
2963 | cfi = &eliloConfigType; |
2964 | } else if (configureYaboot) { |
2965 | cfi = &yabootConfigType; |
2966 | } else if (configureSilo) { |
2967 | cfi = &siloConfigType; |
2968 | } else if (configureZipl) { |
2969 | cfi = &ziplConfigType; |
2970 | } else if (configureExtLinux) { |
2971 | cfi = &extlinuxConfigType; |
2972 | useextlinuxmenu=1; |
2973 | } |
2974 | |
2975 | if (!cfi) { |
2976 | #ifdef __ia64__ |
2977 | cfi = &eliloConfigType; |
2978 | #elif __powerpc__ |
2979 | cfi = &yabootConfigType; |
2980 | #elif __sparc__ |
2981 | cfi = &siloConfigType; |
2982 | #elif __s390__ |
2983 | cfi = &ziplConfigType; |
2984 | #elif __s390x__ |
2985 | cfi = &ziplConfigtype; |
2986 | #else |
2987 | cfi = &grubConfigType; |
2988 | #endif |
2989 | } |
2990 | |
2991 | if (!grubConfig) |
2992 | grubConfig = cfi->defaultConfig; |
2993 | |
2994 | if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion || |
2995 | newKernelPath || removeKernelPath || makeDefault || |
2996 | defaultKernel)) { |
2997 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " |
2998 | "specified option")); |
2999 | return 1; |
3000 | } |
3001 | |
3002 | if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath || |
3003 | removeKernelPath)) { |
3004 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
3005 | "be used when adding or removing kernels\n")); |
3006 | return 1; |
3007 | } |
3008 | |
3009 | if (newKernelPath && !newKernelTitle) { |
3010 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
3011 | return 1; |
3012 | } else if (!newKernelPath && (newKernelTitle || copyDefault || |
3013 | (newKernelInitrd && !updateKernelPath)|| |
3014 | makeDefault || extraInitrdCount > 0)) { |
3015 | fprintf(stderr, _("grubby: kernel path expected\n")); |
3016 | return 1; |
3017 | } |
3018 | |
3019 | if (newKernelPath && updateKernelPath) { |
3020 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
3021 | "not be used together")); |
3022 | return 1; |
3023 | } |
3024 | |
3025 | if (makeDefault && defaultKernel) { |
3026 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
3027 | "may not be used together\n")); |
3028 | return 1; |
3029 | } else if (defaultKernel && removeKernelPath && |
3030 | !strcmp(defaultKernel, removeKernelPath)) { |
3031 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); |
3032 | return 1; |
3033 | } else if (defaultKernel && newKernelPath && |
3034 | !strcmp(defaultKernel, newKernelPath)) { |
3035 | makeDefault = 1; |
3036 | defaultKernel = NULL; |
3037 | } |
3038 | |
3039 | if (!strcmp(grubConfig, "-") && !outputFile) { |
3040 | fprintf(stderr, _("grubby: output file must be specified if stdin " |
3041 | "is used\n")); |
3042 | return 1; |
3043 | } |
3044 | |
3045 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel |
3046 | && !kernelInfo && !bootloaderProbe && !updateKernelPath |
3047 | && !removeMBKernel) { |
3048 | fprintf(stderr, _("grubby: no action specified\n")); |
3049 | return 1; |
3050 | } |
3051 | |
3052 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
3053 | |
3054 | if (cfi->needsBootPrefix) { |
3055 | if (!bootPrefix) { |
3056 | bootPrefix = findBootPrefix(); |
3057 | if (!bootPrefix) return 1; |
3058 | } else { |
3059 | /* this shouldn't end with a / */ |
3060 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
3061 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
3062 | } |
3063 | } else { |
3064 | bootPrefix = ""; |
3065 | } |
3066 | |
3067 | if (!cfi->mbAllowExtraInitRds && |
3068 | extraInitrdCount > 0) { |
3069 | fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig); |
3070 | return 1; |
3071 | } |
3072 | |
3073 | if (bootloaderProbe) { |
3074 | int lrc = 0, grc = 0, erc = 0; |
3075 | struct grubConfig * lconfig, * gconfig; |
3076 | |
3077 | if (!access(grubConfigType.defaultConfig, F_OK)) { |
3078 | gconfig = readConfig(grubConfigType.defaultConfig, &grubConfigType); |
3079 | if (!gconfig) |
3080 | grc = 1; |
3081 | else |
3082 | grc = checkForGrub(gconfig); |
3083 | } |
3084 | |
3085 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
3086 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); |
3087 | if (!lconfig) |
3088 | lrc = 1; |
3089 | else |
3090 | lrc = checkForLilo(lconfig); |
3091 | } |
3092 | |
3093 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
3094 | lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType); |
3095 | if (!lconfig) |
3096 | erc = 1; |
3097 | else |
3098 | erc = checkForExtLinux(lconfig); |
3099 | } |
3100 | |
3101 | if (lrc == 1 || grc == 1) return 1; |
3102 | |
3103 | if (lrc == 2) printf("lilo\n"); |
3104 | if (grc == 2) printf("grub\n"); |
3105 | if (erc == 2) printf("extlinux\n"); |
3106 | |
3107 | return 0; |
3108 | } |
3109 | |
3110 | config = readConfig(grubConfig, cfi); |
3111 | if (!config) return 1; |
3112 | |
3113 | if (displayDefault) { |
3114 | struct singleLine * line; |
3115 | struct singleEntry * entry; |
3116 | char * rootspec; |
3117 | |
3118 | if (config->defaultImage == -1) return 0; |
3119 | entry = findEntryByIndex(config, config->defaultImage); |
3120 | if (!entry) return 0; |
3121 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; |
3122 | |
3123 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
3124 | if (!line) return 0; |
3125 | |
3126 | rootspec = getRootSpecifier(line->elements[1].item); |
3127 | printf("%s%s\n", bootPrefix, line->elements[1].item + |
3128 | ((rootspec != NULL) ? strlen(rootspec) : 0)); |
3129 | |
3130 | return 0; |
3131 | } else if (kernelInfo) |
3132 | return displayInfo(config, kernelInfo, bootPrefix); |
3133 | |
3134 | if (copyDefault) { |
3135 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
3136 | if (!template) return 1; |
3137 | } |
3138 | |
3139 | markRemovedImage(config, removeKernelPath, bootPrefix); |
3140 | markRemovedImage(config, removeMBKernel, bootPrefix); |
3141 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, |
3142 | bootPrefix, flags); |
3143 | setFallbackImage(config, newKernelPath != NULL); |
3144 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
3145 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; |
3146 | if (updateKernelPath && newKernelInitrd) { |
3147 | if (updateInitrd(config, updateKernelPath, bootPrefix, |
3148 | newKernelInitrd)) return 1; |
3149 | } |
3150 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
3151 | newKernelTitle, newKernelArgs, newKernelInitrd, |
3152 | extraInitrds, extraInitrdCount, |
3153 | newMBKernel, newMBKernelArgs)) return 1; |
3154 | |
3155 | |
3156 | if (numEntries(config) == 0) { |
3157 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " |
3158 | "Not writing out new config.\n")); |
3159 | return 1; |
3160 | } |
3161 | |
3162 | if (!outputFile) |
3163 | outputFile = grubConfig; |
3164 | |
3165 | return writeConfig(config, outputFile, bootPrefix); |
3166 | } |