Contents of /trunk/grubby/grubby.c
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Mon Oct 21 13:59:08 2013 UTC (10 years, 11 months ago) by niro
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File size: 123696 byte(s)
Mon Oct 21 13:59:08 2013 UTC (10 years, 11 months ago) by niro
File MIME type: text/plain
File size: 123696 byte(s)
Make grub2's "set default=${saved_entry}" work better (#808021)
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 | #include "log.h" |
40 | |
41 | #ifndef DEBUG |
42 | #define DEBUG 0 |
43 | #endif |
44 | |
45 | #if DEBUG |
46 | #define dbgPrintf(format, args...) fprintf(stderr, format , ## args) |
47 | #else |
48 | #define dbgPrintf(format, args...) |
49 | #endif |
50 | |
51 | int debug = 0; /* Currently just for template debugging */ |
52 | |
53 | #define _(A) (A) |
54 | |
55 | #define MAX_EXTRA_INITRDS 16 /* code segment checked by --bootloader-probe */ |
56 | #define CODE_SEG_SIZE 128 /* code segment checked by --bootloader-probe */ |
57 | |
58 | #define NOOP_OPCODE 0x90 |
59 | #define JMP_SHORT_OPCODE 0xeb |
60 | |
61 | int isEfi = 0; |
62 | |
63 | char *saved_command_line = NULL; |
64 | |
65 | /* comments get lumped in with indention */ |
66 | struct lineElement { |
67 | char * item; |
68 | char * indent; |
69 | }; |
70 | |
71 | enum lineType_e { |
72 | LT_WHITESPACE = 1 << 0, |
73 | LT_TITLE = 1 << 1, |
74 | LT_KERNEL = 1 << 2, |
75 | LT_INITRD = 1 << 3, |
76 | LT_HYPER = 1 << 4, |
77 | LT_DEFAULT = 1 << 5, |
78 | LT_MBMODULE = 1 << 6, |
79 | LT_ROOT = 1 << 7, |
80 | LT_FALLBACK = 1 << 8, |
81 | LT_KERNELARGS = 1 << 9, |
82 | LT_BOOT = 1 << 10, |
83 | LT_BOOTROOT = 1 << 11, |
84 | LT_LBA = 1 << 12, |
85 | LT_OTHER = 1 << 13, |
86 | LT_GENERIC = 1 << 14, |
87 | LT_ECHO = 1 << 16, |
88 | LT_MENUENTRY = 1 << 17, |
89 | LT_ENTRY_END = 1 << 18, |
90 | LT_SET_VARIABLE = 1 << 19, |
91 | LT_KERNEL_EFI = 1 << 20, |
92 | LT_INITRD_EFI = 1 << 21, |
93 | LT_UNKNOWN = 1 << 22, |
94 | }; |
95 | |
96 | struct singleLine { |
97 | char * indent; |
98 | int numElements; |
99 | struct lineElement * elements; |
100 | struct singleLine * next; |
101 | enum lineType_e type; |
102 | }; |
103 | |
104 | struct singleEntry { |
105 | struct singleLine * lines; |
106 | int skip; |
107 | int multiboot; |
108 | struct singleEntry * next; |
109 | }; |
110 | |
111 | #define GRUBBY_BADIMAGE_OKAY (1 << 0) |
112 | |
113 | #define GRUB_CONFIG_NO_DEFAULT (1 << 0) /* don't write out default=0 */ |
114 | |
115 | /* These defines are (only) used in addNewKernel() */ |
116 | #define NEED_KERNEL (1 << 0) |
117 | #define NEED_INITRD (1 << 1) |
118 | #define NEED_TITLE (1 << 2) |
119 | #define NEED_ARGS (1 << 3) |
120 | #define NEED_MB (1 << 4) |
121 | #define NEED_END (1 << 5) |
122 | |
123 | #define MAIN_DEFAULT (1 << 0) |
124 | #define DEFAULT_SAVED -2 |
125 | #define DEFAULT_SAVED_GRUB2 -3 |
126 | |
127 | struct keywordTypes { |
128 | char * key; |
129 | enum lineType_e type; |
130 | char nextChar; |
131 | char separatorChar; |
132 | }; |
133 | |
134 | struct configFileInfo; |
135 | |
136 | typedef const char *(*findConfigFunc)(struct configFileInfo *); |
137 | typedef const int (*writeLineFunc)(struct configFileInfo *, |
138 | struct singleLine *line); |
139 | typedef char *(*getEnvFunc)(struct configFileInfo *, char *name); |
140 | typedef int (*setEnvFunc)(struct configFileInfo *, char *name, char *value); |
141 | |
142 | struct configFileInfo { |
143 | char * defaultConfig; |
144 | findConfigFunc findConfig; |
145 | writeLineFunc writeLine; |
146 | getEnvFunc getEnv; |
147 | setEnvFunc setEnv; |
148 | struct keywordTypes * keywords; |
149 | int caseInsensitive; |
150 | int defaultIsIndex; |
151 | int defaultIsVariable; |
152 | int defaultSupportSaved; |
153 | int defaultIsSaved; |
154 | enum lineType_e entryStart; |
155 | enum lineType_e entryEnd; |
156 | int needsBootPrefix; |
157 | int argsInQuotes; |
158 | int maxTitleLength; |
159 | int titleBracketed; |
160 | int titlePosition; |
161 | int mbHyperFirst; |
162 | int mbInitRdIsModule; |
163 | int mbConcatArgs; |
164 | int mbAllowExtraInitRds; |
165 | char *envFile; |
166 | }; |
167 | |
168 | struct keywordTypes grubKeywords[] = { |
169 | { "title", LT_TITLE, ' ' }, |
170 | { "root", LT_BOOTROOT, ' ' }, |
171 | { "default", LT_DEFAULT, ' ' }, |
172 | { "fallback", LT_FALLBACK, ' ' }, |
173 | { "kernel", LT_KERNEL, ' ' }, |
174 | { "initrd", LT_INITRD, ' ', ' ' }, |
175 | { "module", LT_MBMODULE, ' ' }, |
176 | { "kernel", LT_HYPER, ' ' }, |
177 | { NULL, 0, 0 }, |
178 | }; |
179 | |
180 | const char *grubFindConfig(struct configFileInfo *cfi) { |
181 | static const char *configFiles[] = { |
182 | "/boot/grub/grub.conf", |
183 | "/boot/grub/menu.lst", |
184 | "/etc/grub.conf", |
185 | NULL |
186 | }; |
187 | static int i = -1; |
188 | |
189 | if (i == -1) { |
190 | for (i = 0; configFiles[i] != NULL; i++) { |
191 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
192 | if (!access(configFiles[i], R_OK)) { |
193 | dbgPrintf("found\n"); |
194 | return configFiles[i]; |
195 | } |
196 | dbgPrintf("not found\n"); |
197 | } |
198 | } |
199 | return configFiles[i]; |
200 | } |
201 | |
202 | struct configFileInfo grubConfigType = { |
203 | .findConfig = grubFindConfig, |
204 | .keywords = grubKeywords, |
205 | .defaultIsIndex = 1, |
206 | .defaultSupportSaved = 1, |
207 | .entryStart = LT_TITLE, |
208 | .needsBootPrefix = 1, |
209 | .mbHyperFirst = 1, |
210 | .mbInitRdIsModule = 1, |
211 | .mbAllowExtraInitRds = 1, |
212 | }; |
213 | |
214 | struct keywordTypes grub2Keywords[] = { |
215 | { "menuentry", LT_MENUENTRY, ' ' }, |
216 | { "}", LT_ENTRY_END, ' ' }, |
217 | { "echo", LT_ECHO, ' ' }, |
218 | { "set", LT_SET_VARIABLE,' ', '=' }, |
219 | { "root", LT_BOOTROOT, ' ' }, |
220 | { "default", LT_DEFAULT, ' ' }, |
221 | { "fallback", LT_FALLBACK, ' ' }, |
222 | { "linux", LT_KERNEL, ' ' }, |
223 | { "linuxefi", LT_KERNEL_EFI, ' ' }, |
224 | { "initrd", LT_INITRD, ' ', ' ' }, |
225 | { "initrdefi", LT_INITRD_EFI, ' ', ' ' }, |
226 | { "module", LT_MBMODULE, ' ' }, |
227 | { "kernel", LT_HYPER, ' ' }, |
228 | { NULL, 0, 0 }, |
229 | }; |
230 | |
231 | const char *grub2FindConfig(struct configFileInfo *cfi) { |
232 | static const char *configFiles[] = { |
233 | "/boot/grub/grub-efi.cfg", |
234 | "/boot/grub/grub.cfg", |
235 | NULL |
236 | }; |
237 | static int i = -1; |
238 | static const char *grub_cfg = "/boot/grub/grub.cfg"; |
239 | int rc = -1; |
240 | |
241 | if (i == -1) { |
242 | for (i = 0; configFiles[i] != NULL; i++) { |
243 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
244 | if ((rc = access(configFiles[i], R_OK))) { |
245 | if (errno == EACCES) { |
246 | printf("Unable to access bootloader configuration file " |
247 | "\"%s\": %m\n", configFiles[i]); |
248 | exit(1); |
249 | } |
250 | continue; |
251 | } else { |
252 | dbgPrintf("found\n"); |
253 | return configFiles[i]; |
254 | } |
255 | } |
256 | } |
257 | |
258 | /* Ubuntu renames grub2 to grub, so check for the grub.d directory |
259 | * that isn't in grub1, and if it exists, return the config file path |
260 | * that they use. */ |
261 | if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) { |
262 | dbgPrintf("found\n"); |
263 | return grub_cfg; |
264 | } |
265 | |
266 | dbgPrintf("not found\n"); |
267 | return configFiles[i]; |
268 | } |
269 | |
270 | /* kind of hacky. It'll give the first 1024 bytes, ish. */ |
271 | static char *grub2GetEnv(struct configFileInfo *info, char *name) |
272 | { |
273 | static char buf[1025]; |
274 | char *s = NULL; |
275 | char *ret = NULL; |
276 | char *envFile = info->envFile ? info->envFile : "/boot/grub2/grubenv"; |
277 | int rc = asprintf(&s, "grub2-editenv %s list | grep '^%s='", envFile, name); |
278 | |
279 | if (rc < 0) |
280 | return NULL; |
281 | |
282 | FILE *f = popen(s, "r"); |
283 | if (!f) |
284 | goto out; |
285 | |
286 | memset(buf, '\0', sizeof (buf)); |
287 | ret = fgets(buf, 1024, f); |
288 | pclose(f); |
289 | |
290 | if (ret) { |
291 | ret += strlen(name) + 1; |
292 | ret[strlen(ret) - 1] = '\0'; |
293 | } |
294 | dbgPrintf("grub2GetEnv(%s): %s\n", name, ret); |
295 | out: |
296 | free(s); |
297 | return ret; |
298 | } |
299 | |
300 | static int grub2SetEnv(struct configFileInfo *info, char *name, char *value) |
301 | { |
302 | char *s = NULL; |
303 | int rc = 0; |
304 | char *envFile = info->envFile ? info->envFile : "/boot/grub2/grubenv"; |
305 | |
306 | rc = asprintf(&s, "grub2-editenv %s set '%s=%s'", envFile, name, value); |
307 | if (rc <0) |
308 | return -1; |
309 | |
310 | dbgPrintf("grub2SetEnv(%s): %s\n", name, s); |
311 | rc = system(s); |
312 | free(s); |
313 | return rc; |
314 | } |
315 | |
316 | /* this is a gigantic hack to avoid clobbering grub2 variables... */ |
317 | static int is_special_grub2_variable(const char *name) |
318 | { |
319 | if (!strcmp(name,"\"${next_entry}\"")) |
320 | return 1; |
321 | if (!strcmp(name,"\"${prev_saved_entry}\"")) |
322 | return 1; |
323 | return 0; |
324 | } |
325 | |
326 | int sizeOfSingleLine(struct singleLine * line) { |
327 | int count = 0; |
328 | |
329 | for (int i = 0; i < line->numElements; i++) { |
330 | int indentSize = 0; |
331 | |
332 | count = count + strlen(line->elements[i].item); |
333 | |
334 | indentSize = strlen(line->elements[i].indent); |
335 | if (indentSize > 0) |
336 | count = count + indentSize; |
337 | else |
338 | /* be extra safe and add room for whitespaces */ |
339 | count = count + 1; |
340 | } |
341 | |
342 | /* room for trailing terminator */ |
343 | count = count + 1; |
344 | |
345 | return count; |
346 | } |
347 | |
348 | static int isquote(char q) |
349 | { |
350 | if (q == '\'' || q == '\"') |
351 | return 1; |
352 | return 0; |
353 | } |
354 | |
355 | static int iskernel(enum lineType_e type) { |
356 | return (type == LT_KERNEL || type == LT_KERNEL_EFI); |
357 | } |
358 | |
359 | static int isinitrd(enum lineType_e type) { |
360 | return (type == LT_INITRD || type == LT_INITRD_EFI); |
361 | } |
362 | |
363 | char *grub2ExtractTitle(struct singleLine * line) { |
364 | char * current; |
365 | char * current_indent; |
366 | int current_len; |
367 | int current_indent_len; |
368 | int i; |
369 | |
370 | /* bail out if line does not start with menuentry */ |
371 | if (strcmp(line->elements[0].item, "menuentry")) |
372 | return NULL; |
373 | |
374 | i = 1; |
375 | current = line->elements[i].item; |
376 | current_len = strlen(current); |
377 | |
378 | /* if second word is quoted, strip the quotes and return single word */ |
379 | if (isquote(*current) && isquote(current[current_len - 1])) { |
380 | char *tmp; |
381 | |
382 | tmp = strdup(current); |
383 | *(tmp + current_len - 1) = '\0'; |
384 | return ++tmp; |
385 | } |
386 | |
387 | /* if no quotes, return second word verbatim */ |
388 | if (!isquote(*current)) |
389 | return current; |
390 | |
391 | /* second element start with a quote, so we have to find the element |
392 | * whose last character is also quote (assuming it's the closing one) */ |
393 | int resultMaxSize; |
394 | char * result; |
395 | |
396 | resultMaxSize = sizeOfSingleLine(line); |
397 | result = malloc(resultMaxSize); |
398 | snprintf(result, resultMaxSize, "%s", ++current); |
399 | |
400 | i++; |
401 | for (; i < line->numElements; ++i) { |
402 | current = line->elements[i].item; |
403 | current_len = strlen(current); |
404 | current_indent = line->elements[i].indent; |
405 | current_indent_len = strlen(current_indent); |
406 | |
407 | strncat(result, current_indent, current_indent_len); |
408 | if (!isquote(current[current_len-1])) { |
409 | strncat(result, current, current_len); |
410 | } else { |
411 | strncat(result, current, current_len - 1); |
412 | break; |
413 | } |
414 | } |
415 | return result; |
416 | } |
417 | |
418 | struct configFileInfo grub2ConfigType = { |
419 | .findConfig = grub2FindConfig, |
420 | .getEnv = grub2GetEnv, |
421 | .setEnv = grub2SetEnv, |
422 | .keywords = grub2Keywords, |
423 | .defaultIsIndex = 1, |
424 | .defaultSupportSaved = 1, |
425 | .defaultIsVariable = 1, |
426 | .entryStart = LT_MENUENTRY, |
427 | .entryEnd = LT_ENTRY_END, |
428 | .titlePosition = 1, |
429 | .needsBootPrefix = 1, |
430 | .mbHyperFirst = 1, |
431 | .mbInitRdIsModule = 1, |
432 | .mbAllowExtraInitRds = 1, |
433 | }; |
434 | |
435 | struct keywordTypes yabootKeywords[] = { |
436 | { "label", LT_TITLE, '=' }, |
437 | { "root", LT_ROOT, '=' }, |
438 | { "default", LT_DEFAULT, '=' }, |
439 | { "image", LT_KERNEL, '=' }, |
440 | { "bsd", LT_GENERIC, '=' }, |
441 | { "macos", LT_GENERIC, '=' }, |
442 | { "macosx", LT_GENERIC, '=' }, |
443 | { "magicboot", LT_GENERIC, '=' }, |
444 | { "darwin", LT_GENERIC, '=' }, |
445 | { "timeout", LT_GENERIC, '=' }, |
446 | { "install", LT_GENERIC, '=' }, |
447 | { "fstype", LT_GENERIC, '=' }, |
448 | { "hfstype", LT_GENERIC, '=' }, |
449 | { "delay", LT_GENERIC, '=' }, |
450 | { "defaultos", LT_GENERIC, '=' }, |
451 | { "init-message", LT_GENERIC, '=' }, |
452 | { "enablecdboot", LT_GENERIC, ' ' }, |
453 | { "enableofboot", LT_GENERIC, ' ' }, |
454 | { "enablenetboot", LT_GENERIC, ' ' }, |
455 | { "nonvram", LT_GENERIC, ' ' }, |
456 | { "hide", LT_GENERIC, ' ' }, |
457 | { "protect", LT_GENERIC, ' ' }, |
458 | { "nobless", LT_GENERIC, ' ' }, |
459 | { "nonvram", LT_GENERIC, ' ' }, |
460 | { "brokenosx", LT_GENERIC, ' ' }, |
461 | { "usemount", LT_GENERIC, ' ' }, |
462 | { "mntpoint", LT_GENERIC, '=' }, |
463 | { "partition", LT_GENERIC, '=' }, |
464 | { "device", LT_GENERIC, '=' }, |
465 | { "fstype", LT_GENERIC, '=' }, |
466 | { "initrd", LT_INITRD, '=', ';' }, |
467 | { "append", LT_KERNELARGS, '=' }, |
468 | { "boot", LT_BOOT, '=' }, |
469 | { "lba", LT_LBA, ' ' }, |
470 | { NULL, 0, 0 }, |
471 | }; |
472 | |
473 | struct keywordTypes liloKeywords[] = { |
474 | { "label", LT_TITLE, '=' }, |
475 | { "root", LT_ROOT, '=' }, |
476 | { "default", LT_DEFAULT, '=' }, |
477 | { "image", LT_KERNEL, '=' }, |
478 | { "other", LT_OTHER, '=' }, |
479 | { "initrd", LT_INITRD, '=' }, |
480 | { "append", LT_KERNELARGS, '=' }, |
481 | { "boot", LT_BOOT, '=' }, |
482 | { "lba", LT_LBA, ' ' }, |
483 | { NULL, 0, 0 }, |
484 | }; |
485 | |
486 | struct keywordTypes eliloKeywords[] = { |
487 | { "label", LT_TITLE, '=' }, |
488 | { "root", LT_ROOT, '=' }, |
489 | { "default", LT_DEFAULT, '=' }, |
490 | { "image", LT_KERNEL, '=' }, |
491 | { "initrd", LT_INITRD, '=' }, |
492 | { "append", LT_KERNELARGS, '=' }, |
493 | { "vmm", LT_HYPER, '=' }, |
494 | { NULL, 0, 0 }, |
495 | }; |
496 | |
497 | struct keywordTypes siloKeywords[] = { |
498 | { "label", LT_TITLE, '=' }, |
499 | { "root", LT_ROOT, '=' }, |
500 | { "default", LT_DEFAULT, '=' }, |
501 | { "image", LT_KERNEL, '=' }, |
502 | { "other", LT_OTHER, '=' }, |
503 | { "initrd", LT_INITRD, '=' }, |
504 | { "append", LT_KERNELARGS, '=' }, |
505 | { "boot", LT_BOOT, '=' }, |
506 | { NULL, 0, 0 }, |
507 | }; |
508 | |
509 | struct keywordTypes ziplKeywords[] = { |
510 | { "target", LT_BOOTROOT, '=' }, |
511 | { "image", LT_KERNEL, '=' }, |
512 | { "ramdisk", LT_INITRD, '=' }, |
513 | { "parameters", LT_KERNELARGS, '=' }, |
514 | { "default", LT_DEFAULT, '=' }, |
515 | { NULL, 0, 0 }, |
516 | }; |
517 | |
518 | struct keywordTypes extlinuxKeywords[] = { |
519 | { "label", LT_TITLE, ' ' }, |
520 | { "root", LT_ROOT, ' ' }, |
521 | { "default", LT_DEFAULT, ' ' }, |
522 | { "kernel", LT_KERNEL, ' ' }, |
523 | { "initrd", LT_INITRD, ' ', ',' }, |
524 | { "append", LT_KERNELARGS, ' ' }, |
525 | { "prompt", LT_UNKNOWN, ' ' }, |
526 | { NULL, 0, 0 }, |
527 | }; |
528 | int useextlinuxmenu; |
529 | struct configFileInfo eliloConfigType = { |
530 | .defaultConfig = "/boot/efi/EFI/redhat/elilo.conf", |
531 | .keywords = eliloKeywords, |
532 | .entryStart = LT_KERNEL, |
533 | .needsBootPrefix = 1, |
534 | .argsInQuotes = 1, |
535 | .mbConcatArgs = 1, |
536 | }; |
537 | |
538 | struct configFileInfo liloConfigType = { |
539 | .defaultConfig = "/etc/lilo.conf", |
540 | .keywords = liloKeywords, |
541 | .entryStart = LT_KERNEL, |
542 | .argsInQuotes = 1, |
543 | .maxTitleLength = 15, |
544 | }; |
545 | |
546 | struct configFileInfo yabootConfigType = { |
547 | .defaultConfig = "/etc/yaboot.conf", |
548 | .keywords = yabootKeywords, |
549 | .entryStart = LT_KERNEL, |
550 | .needsBootPrefix = 1, |
551 | .argsInQuotes = 1, |
552 | .maxTitleLength = 15, |
553 | .mbAllowExtraInitRds = 1, |
554 | }; |
555 | |
556 | struct configFileInfo siloConfigType = { |
557 | .defaultConfig = "/etc/silo.conf", |
558 | .keywords = siloKeywords, |
559 | .entryStart = LT_KERNEL, |
560 | .needsBootPrefix = 1, |
561 | .argsInQuotes = 1, |
562 | .maxTitleLength = 15, |
563 | }; |
564 | |
565 | struct configFileInfo ziplConfigType = { |
566 | .defaultConfig = "/etc/zipl.conf", |
567 | .keywords = ziplKeywords, |
568 | .entryStart = LT_TITLE, |
569 | .argsInQuotes = 1, |
570 | .titleBracketed = 1, |
571 | }; |
572 | |
573 | struct configFileInfo extlinuxConfigType = { |
574 | .defaultConfig = "/boot/extlinux/extlinux.conf", |
575 | .keywords = extlinuxKeywords, |
576 | .caseInsensitive = 1, |
577 | .entryStart = LT_TITLE, |
578 | .needsBootPrefix = 1, |
579 | .maxTitleLength = 255, |
580 | .mbAllowExtraInitRds = 1, |
581 | }; |
582 | |
583 | struct grubConfig { |
584 | struct singleLine * theLines; |
585 | struct singleEntry * entries; |
586 | char * primaryIndent; |
587 | char * secondaryIndent; |
588 | int defaultImage; /* -1 if none specified -- this value is |
589 | * written out, overriding original */ |
590 | int fallbackImage; /* just like defaultImage */ |
591 | int flags; |
592 | struct configFileInfo * cfi; |
593 | }; |
594 | |
595 | blkid_cache blkid; |
596 | |
597 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); |
598 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, |
599 | const char * path, const char * prefix, |
600 | int * index); |
601 | struct singleEntry * findEntryByTitle(struct grubConfig * cfg, char *title, |
602 | int * index); |
603 | static int readFile(int fd, char ** bufPtr); |
604 | static void lineInit(struct singleLine * line); |
605 | struct singleLine * lineDup(struct singleLine * line); |
606 | static void lineFree(struct singleLine * line); |
607 | static int lineWrite(FILE * out, struct singleLine * line, |
608 | struct configFileInfo * cfi); |
609 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
610 | struct configFileInfo * cfi); |
611 | static char * getRootSpecifier(char * str); |
612 | static void requote(struct singleLine *line, struct configFileInfo * cfi); |
613 | static void insertElement(struct singleLine * line, |
614 | const char * item, int insertHere, |
615 | struct configFileInfo * cfi); |
616 | static void removeElement(struct singleLine * line, int removeHere); |
617 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
618 | struct configFileInfo * cfi); |
619 | static enum lineType_e getTypeByKeyword(char * keyword, |
620 | struct configFileInfo * cfi); |
621 | static struct singleLine * getLineByType(enum lineType_e type, |
622 | struct singleLine * line); |
623 | static int checkForExtLinux(struct grubConfig * config); |
624 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
625 | struct singleLine * tmplLine, |
626 | struct singleLine * prevLine, |
627 | const char * val, |
628 | struct configFileInfo * cfi); |
629 | struct singleLine * addLine(struct singleEntry * entry, |
630 | struct configFileInfo * cfi, |
631 | enum lineType_e type, char * defaultIndent, |
632 | const char * val); |
633 | |
634 | static char * sdupprintf(const char *format, ...) |
635 | #ifdef __GNUC__ |
636 | __attribute__ ((format (printf, 1, 2))); |
637 | #else |
638 | ; |
639 | #endif |
640 | |
641 | static char * sdupprintf(const char *format, ...) { |
642 | char *buf = NULL; |
643 | char c; |
644 | va_list args; |
645 | size_t size = 0; |
646 | va_start(args, format); |
647 | |
648 | /* XXX requires C99 vsnprintf behavior */ |
649 | size = vsnprintf(&c, 1, format, args) + 1; |
650 | if (size == -1) { |
651 | printf("ERROR: vsnprintf behavior is not C99\n"); |
652 | abort(); |
653 | } |
654 | |
655 | va_end(args); |
656 | va_start(args, format); |
657 | |
658 | buf = malloc(size); |
659 | if (buf == NULL) |
660 | return NULL; |
661 | vsnprintf(buf, size, format, args); |
662 | va_end (args); |
663 | |
664 | return buf; |
665 | } |
666 | |
667 | static enum lineType_e preferredLineType(enum lineType_e type, |
668 | struct configFileInfo *cfi) { |
669 | if (isEfi && cfi == &grub2ConfigType) { |
670 | switch (type) { |
671 | case LT_KERNEL: |
672 | return LT_KERNEL_EFI; |
673 | case LT_INITRD: |
674 | return LT_INITRD_EFI; |
675 | default: |
676 | return type; |
677 | } |
678 | } |
679 | return type; |
680 | } |
681 | |
682 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
683 | struct configFileInfo * cfi) { |
684 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
685 | if (kw->type == type) |
686 | return kw; |
687 | } |
688 | return NULL; |
689 | } |
690 | |
691 | static char *getKeyByType(enum lineType_e type, struct configFileInfo * cfi) { |
692 | struct keywordTypes *kt = getKeywordByType(type, cfi); |
693 | if (kt) |
694 | return kt->key; |
695 | return "unknown"; |
696 | } |
697 | |
698 | static char * getpathbyspec(char *device) { |
699 | if (!blkid) |
700 | blkid_get_cache(&blkid, NULL); |
701 | |
702 | return blkid_get_devname(blkid, device, NULL); |
703 | } |
704 | |
705 | static char * getuuidbydev(char *device) { |
706 | if (!blkid) |
707 | blkid_get_cache(&blkid, NULL); |
708 | |
709 | return blkid_get_tag_value(blkid, "UUID", device); |
710 | } |
711 | |
712 | static enum lineType_e getTypeByKeyword(char * keyword, |
713 | struct configFileInfo * cfi) { |
714 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
715 | if (cfi->caseInsensitive) { |
716 | if (!strcasecmp(keyword, kw->key)) |
717 | return kw->type; |
718 | } else { |
719 | if (!strcmp(keyword, kw->key)) |
720 | return kw->type; |
721 | } |
722 | } |
723 | return LT_UNKNOWN; |
724 | } |
725 | |
726 | static struct singleLine * getLineByType(enum lineType_e type, |
727 | struct singleLine * line) { |
728 | dbgPrintf("getLineByType(%d): ", type); |
729 | for (; line; line = line->next) { |
730 | dbgPrintf("%d:%s ", line->type, |
731 | line->numElements ? line->elements[0].item : "(empty)"); |
732 | if (line->type & type) break; |
733 | } |
734 | dbgPrintf(line ? "\n" : " (failed)\n"); |
735 | return line; |
736 | } |
737 | |
738 | static int isBracketedTitle(struct singleLine * line) { |
739 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
740 | int len = strlen(line->elements[0].item); |
741 | if (*(line->elements[0].item + len - 1) == ']') { |
742 | /* FIXME: this is a hack... */ |
743 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
744 | return 1; |
745 | } |
746 | } |
747 | } |
748 | return 0; |
749 | } |
750 | |
751 | static int isEntryStart(struct singleLine * line, |
752 | struct configFileInfo * cfi) { |
753 | return line->type == cfi->entryStart || line->type == LT_OTHER || |
754 | (cfi->titleBracketed && isBracketedTitle(line)); |
755 | } |
756 | |
757 | /* extract the title from within brackets (for zipl) */ |
758 | static char * extractTitle(struct singleLine * line) { |
759 | /* bracketed title... let's extract it (leaks a byte) */ |
760 | char * title = NULL; |
761 | if (line->type == LT_TITLE) { |
762 | title = strdup(line->elements[0].item); |
763 | title++; |
764 | *(title + strlen(title) - 1) = '\0'; |
765 | } else if (line->type == LT_MENUENTRY) |
766 | title = strdup(line->elements[1].item); |
767 | else |
768 | return NULL; |
769 | return title; |
770 | } |
771 | |
772 | static int readFile(int fd, char ** bufPtr) { |
773 | int alloced = 0, size = 0, i = 0; |
774 | char * buf = NULL; |
775 | |
776 | do { |
777 | size += i; |
778 | if ((size + 1024) > alloced) { |
779 | alloced += 4096; |
780 | buf = realloc(buf, alloced + 1); |
781 | } |
782 | } while ((i = read(fd, buf + size, 1024)) > 0); |
783 | |
784 | if (i < 0) { |
785 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); |
786 | free(buf); |
787 | return 1; |
788 | } |
789 | |
790 | buf = realloc(buf, size + 2); |
791 | if (size == 0) |
792 | buf[size++] = '\n'; |
793 | else |
794 | if (buf[size - 1] != '\n') |
795 | buf[size++] = '\n'; |
796 | buf[size] = '\0'; |
797 | |
798 | *bufPtr = buf; |
799 | |
800 | return 0; |
801 | } |
802 | |
803 | static void lineInit(struct singleLine * line) { |
804 | line->indent = NULL; |
805 | line->elements = NULL; |
806 | line->numElements = 0; |
807 | line->next = NULL; |
808 | } |
809 | |
810 | struct singleLine * lineDup(struct singleLine * line) { |
811 | struct singleLine * newLine = malloc(sizeof(*newLine)); |
812 | |
813 | newLine->indent = strdup(line->indent); |
814 | newLine->next = NULL; |
815 | newLine->type = line->type; |
816 | newLine->numElements = line->numElements; |
817 | newLine->elements = malloc(sizeof(*newLine->elements) * |
818 | newLine->numElements); |
819 | |
820 | for (int i = 0; i < newLine->numElements; i++) { |
821 | newLine->elements[i].indent = strdup(line->elements[i].indent); |
822 | newLine->elements[i].item = strdup(line->elements[i].item); |
823 | } |
824 | |
825 | return newLine; |
826 | } |
827 | |
828 | static void lineFree(struct singleLine * line) { |
829 | if (line->indent) free(line->indent); |
830 | |
831 | for (int i = 0; i < line->numElements; i++) { |
832 | free(line->elements[i].item); |
833 | free(line->elements[i].indent); |
834 | } |
835 | |
836 | if (line->elements) free(line->elements); |
837 | lineInit(line); |
838 | } |
839 | |
840 | static int lineWrite(FILE * out, struct singleLine * line, |
841 | struct configFileInfo * cfi) { |
842 | if (fprintf(out, "%s", line->indent) == -1) return -1; |
843 | |
844 | for (int i = 0; i < line->numElements; i++) { |
845 | /* Need to handle this, because we strip the quotes from |
846 | * menuentry when read it. */ |
847 | if (line->type == LT_MENUENTRY && i == 1) { |
848 | if(!isquote(*line->elements[i].item)) |
849 | fprintf(out, "\'%s\'", line->elements[i].item); |
850 | else |
851 | fprintf(out, "%s", line->elements[i].item); |
852 | fprintf(out, "%s", line->elements[i].indent); |
853 | |
854 | continue; |
855 | } |
856 | |
857 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
858 | if (fputc('"', out) == EOF) return -1; |
859 | |
860 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; |
861 | if (i < line->numElements - 1) |
862 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; |
863 | } |
864 | |
865 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
866 | if (fputc('"', out) == EOF) return -1; |
867 | |
868 | if (fprintf(out, "\n") == -1) return -1; |
869 | |
870 | return 0; |
871 | } |
872 | |
873 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
874 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
875 | struct configFileInfo * cfi) { |
876 | char * end; |
877 | char * start = *bufPtr; |
878 | char * chptr; |
879 | int elementsAlloced = 0; |
880 | struct lineElement * element; |
881 | int first = 1; |
882 | |
883 | lineFree(line); |
884 | |
885 | end = strchr(start, '\n'); |
886 | *end = '\0'; |
887 | *bufPtr = end + 1; |
888 | |
889 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
890 | |
891 | line->indent = strndup(start, chptr - start); |
892 | start = chptr; |
893 | |
894 | while (start < end) { |
895 | /* we know !isspace(*start) */ |
896 | |
897 | if (elementsAlloced == line->numElements) { |
898 | elementsAlloced += 5; |
899 | line->elements = realloc(line->elements, |
900 | sizeof(*line->elements) * elementsAlloced); |
901 | } |
902 | |
903 | element = line->elements + line->numElements; |
904 | |
905 | chptr = start; |
906 | while (*chptr && !isspace(*chptr)) { |
907 | if (first && *chptr == '=') break; |
908 | chptr++; |
909 | } |
910 | element->item = strndup(start, chptr - start); |
911 | start = chptr; |
912 | |
913 | /* lilo actually accepts the pathological case of append = " foo " */ |
914 | if (*start == '=') |
915 | chptr = start + 1; |
916 | else |
917 | chptr = start; |
918 | |
919 | do { |
920 | for (; *chptr && isspace(*chptr); chptr++); |
921 | if (*chptr == '=') |
922 | chptr = chptr + 1; |
923 | } while (isspace(*chptr)); |
924 | |
925 | element->indent = strndup(start, chptr - start); |
926 | start = chptr; |
927 | |
928 | line->numElements++; |
929 | first = 0; |
930 | } |
931 | |
932 | if (!line->numElements) |
933 | line->type = LT_WHITESPACE; |
934 | else { |
935 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
936 | if (line->type == LT_UNKNOWN) { |
937 | /* zipl does [title] instead of something reasonable like all |
938 | * the other boot loaders. kind of ugly */ |
939 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
940 | line->type = LT_TITLE; |
941 | } |
942 | |
943 | /* this is awkward, but we need to be able to handle keywords |
944 | that begin with a # (specifically for #boot in grub.conf), |
945 | but still make comments lines with no elements (everything |
946 | stored in the indent */ |
947 | if (*line->elements[0].item == '#') { |
948 | char * fullLine; |
949 | int len; |
950 | |
951 | len = strlen(line->indent); |
952 | for (int i = 0; i < line->numElements; i++) |
953 | len += strlen(line->elements[i].item) + |
954 | strlen(line->elements[i].indent); |
955 | |
956 | fullLine = malloc(len + 1); |
957 | strcpy(fullLine, line->indent); |
958 | free(line->indent); |
959 | line->indent = fullLine; |
960 | |
961 | for (int i = 0; i < line->numElements; i++) { |
962 | strcat(fullLine, line->elements[i].item); |
963 | strcat(fullLine, line->elements[i].indent); |
964 | free(line->elements[i].item); |
965 | free(line->elements[i].indent); |
966 | } |
967 | |
968 | line->type = LT_WHITESPACE; |
969 | line->numElements = 0; |
970 | } |
971 | } else { |
972 | struct keywordTypes *kw; |
973 | |
974 | kw = getKeywordByType(line->type, cfi); |
975 | |
976 | /* space isn't the only separator, we need to split |
977 | * elements up more |
978 | */ |
979 | if (!isspace(kw->separatorChar)) { |
980 | char indent[2] = ""; |
981 | indent[0] = kw->separatorChar; |
982 | for (int i = 1; i < line->numElements; i++) { |
983 | char *p; |
984 | int numNewElements; |
985 | |
986 | numNewElements = 0; |
987 | p = line->elements[i].item; |
988 | while (*p != '\0') { |
989 | if (*p == kw->separatorChar) |
990 | numNewElements++; |
991 | p++; |
992 | } |
993 | if (line->numElements + numNewElements >= elementsAlloced) { |
994 | elementsAlloced += numNewElements + 5; |
995 | line->elements = realloc(line->elements, |
996 | sizeof(*line->elements) * elementsAlloced); |
997 | } |
998 | |
999 | for (int j = line->numElements; j > i; j--) { |
1000 | line->elements[j + numNewElements] = line->elements[j]; |
1001 | } |
1002 | line->numElements += numNewElements; |
1003 | |
1004 | p = line->elements[i].item; |
1005 | while (*p != '\0') { |
1006 | |
1007 | while (*p != kw->separatorChar && *p != '\0') p++; |
1008 | if (*p == '\0') { |
1009 | break; |
1010 | } |
1011 | |
1012 | line->elements[i + 1].indent = line->elements[i].indent; |
1013 | line->elements[i].indent = strdup(indent); |
1014 | *p++ = '\0'; |
1015 | i++; |
1016 | line->elements[i].item = strdup(p); |
1017 | } |
1018 | } |
1019 | } |
1020 | } |
1021 | } |
1022 | |
1023 | return 0; |
1024 | } |
1025 | |
1026 | static struct grubConfig * readConfig(const char * inName, |
1027 | struct configFileInfo * cfi) { |
1028 | int in; |
1029 | char * incoming = NULL, * head; |
1030 | int rc; |
1031 | int sawEntry = 0; |
1032 | int movedLine = 0; |
1033 | struct grubConfig * cfg; |
1034 | struct singleLine * last = NULL, * line, * defaultLine = NULL; |
1035 | char * end; |
1036 | struct singleEntry * entry = NULL; |
1037 | int len; |
1038 | char * buf; |
1039 | |
1040 | if (inName == NULL) { |
1041 | printf("Could not find bootloader configuration\n"); |
1042 | exit(1); |
1043 | } else if (!strcmp(inName, "-")) { |
1044 | in = 0; |
1045 | } else { |
1046 | if ((in = open(inName, O_RDONLY)) < 0) { |
1047 | fprintf(stderr, _("error opening %s for read: %s\n"), |
1048 | inName, strerror(errno)); |
1049 | return NULL; |
1050 | } |
1051 | } |
1052 | |
1053 | rc = readFile(in, &incoming); |
1054 | close(in); |
1055 | if (rc) return NULL; |
1056 | |
1057 | head = incoming; |
1058 | cfg = malloc(sizeof(*cfg)); |
1059 | cfg->primaryIndent = strdup(""); |
1060 | cfg->secondaryIndent = strdup("\t"); |
1061 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
1062 | cfg->cfi = cfi; |
1063 | cfg->theLines = NULL; |
1064 | cfg->entries = NULL; |
1065 | cfg->fallbackImage = 0; |
1066 | |
1067 | /* copy everything we have */ |
1068 | while (*head) { |
1069 | line = malloc(sizeof(*line)); |
1070 | lineInit(line); |
1071 | |
1072 | if (getNextLine(&head, line, cfi)) { |
1073 | free(line); |
1074 | /* XXX memory leak of everything in cfg */ |
1075 | return NULL; |
1076 | } |
1077 | |
1078 | if (!sawEntry && line->numElements) { |
1079 | free(cfg->primaryIndent); |
1080 | cfg->primaryIndent = strdup(line->indent); |
1081 | } else if (line->numElements) { |
1082 | free(cfg->secondaryIndent); |
1083 | cfg->secondaryIndent = strdup(line->indent); |
1084 | } |
1085 | |
1086 | if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) { |
1087 | sawEntry = 1; |
1088 | if (!entry) { |
1089 | cfg->entries = malloc(sizeof(*entry)); |
1090 | entry = cfg->entries; |
1091 | } else { |
1092 | entry->next = malloc(sizeof(*entry)); |
1093 | entry = entry->next; |
1094 | } |
1095 | |
1096 | entry->skip = 0; |
1097 | entry->multiboot = 0; |
1098 | entry->lines = NULL; |
1099 | entry->next = NULL; |
1100 | } |
1101 | |
1102 | if (line->type == LT_SET_VARIABLE) { |
1103 | dbgPrintf("found 'set' command (%d elements): ", line->numElements); |
1104 | dbgPrintf("%s", line->indent); |
1105 | for (int i = 0; i < line->numElements; i++) |
1106 | dbgPrintf("\"%s\"%s", line->elements[i].item, line->elements[i].indent); |
1107 | dbgPrintf("\n"); |
1108 | struct keywordTypes *kwType = getKeywordByType(LT_DEFAULT, cfi); |
1109 | if (kwType && line->numElements == 3 && |
1110 | !strcmp(line->elements[1].item, kwType->key) && |
1111 | !is_special_grub2_variable(line->elements[2].item)) { |
1112 | dbgPrintf("Line sets default config\n"); |
1113 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1114 | defaultLine = line; |
1115 | } |
1116 | } else if (line->type == LT_DEFAULT && line->numElements == 2) { |
1117 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1118 | defaultLine = line; |
1119 | |
1120 | } else if (iskernel(line->type)) { |
1121 | /* if by some freak chance this is multiboot and the "module" |
1122 | * lines came earlier in the template, make sure to use LT_HYPER |
1123 | * instead of LT_KERNEL now |
1124 | */ |
1125 | if (entry->multiboot) |
1126 | line->type = LT_HYPER; |
1127 | |
1128 | } else if (line->type == LT_MBMODULE) { |
1129 | /* go back and fix the LT_KERNEL line to indicate LT_HYPER |
1130 | * instead, now that we know this is a multiboot entry. |
1131 | * This only applies to grub, but that's the only place we |
1132 | * should find LT_MBMODULE lines anyway. |
1133 | */ |
1134 | for (struct singleLine *l = entry->lines; l; l = l->next) { |
1135 | if (l->type == LT_HYPER) |
1136 | break; |
1137 | else if (iskernel(l->type)) { |
1138 | l->type = LT_HYPER; |
1139 | break; |
1140 | } |
1141 | } |
1142 | entry->multiboot = 1; |
1143 | |
1144 | } else if (line->type == LT_HYPER) { |
1145 | entry->multiboot = 1; |
1146 | |
1147 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
1148 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); |
1149 | if (*end) cfg->fallbackImage = -1; |
1150 | |
1151 | } else if (line->type == LT_TITLE && line->numElements > 1) { |
1152 | /* make the title a single argument (undoing our parsing) */ |
1153 | len = 0; |
1154 | for (int i = 1; i < line->numElements; i++) { |
1155 | len += strlen(line->elements[i].item); |
1156 | len += strlen(line->elements[i].indent); |
1157 | } |
1158 | buf = malloc(len + 1); |
1159 | *buf = '\0'; |
1160 | |
1161 | for (int i = 1; i < line->numElements; i++) { |
1162 | strcat(buf, line->elements[i].item); |
1163 | free(line->elements[i].item); |
1164 | |
1165 | if ((i + 1) != line->numElements) { |
1166 | strcat(buf, line->elements[i].indent); |
1167 | free(line->elements[i].indent); |
1168 | } |
1169 | } |
1170 | |
1171 | line->elements[1].indent = |
1172 | line->elements[line->numElements - 1].indent; |
1173 | line->elements[1].item = buf; |
1174 | line->numElements = 2; |
1175 | } else if (line->type == LT_MENUENTRY && line->numElements > 3) { |
1176 | /* let --remove-kernel="TITLE=what" work */ |
1177 | len = 0; |
1178 | char *extras; |
1179 | char *title; |
1180 | |
1181 | for (int i = 1; i < line->numElements; i++) { |
1182 | len += strlen(line->elements[i].item); |
1183 | len += strlen(line->elements[i].indent); |
1184 | } |
1185 | buf = malloc(len + 1); |
1186 | *buf = '\0'; |
1187 | |
1188 | /* allocate mem for extra flags. */ |
1189 | extras = malloc(len + 1); |
1190 | *extras = '\0'; |
1191 | |
1192 | /* get title. */ |
1193 | for (int i = 0; i < line->numElements; i++) { |
1194 | if (!strcmp(line->elements[i].item, "menuentry")) |
1195 | continue; |
1196 | if (isquote(*line->elements[i].item)) |
1197 | title = line->elements[i].item + 1; |
1198 | else |
1199 | title = line->elements[i].item; |
1200 | |
1201 | len = strlen(title); |
1202 | if (isquote(title[len-1])) { |
1203 | strncat(buf, title,len-1); |
1204 | break; |
1205 | } else { |
1206 | strcat(buf, title); |
1207 | strcat(buf, line->elements[i].indent); |
1208 | } |
1209 | } |
1210 | |
1211 | /* get extras */ |
1212 | int count = 0; |
1213 | for (int i = 0; i < line->numElements; i++) { |
1214 | if (count >= 2) { |
1215 | strcat(extras, line->elements[i].item); |
1216 | strcat(extras, line->elements[i].indent); |
1217 | } |
1218 | |
1219 | if (!strcmp(line->elements[i].item, "menuentry")) |
1220 | continue; |
1221 | |
1222 | /* count ' or ", there should be two in menuentry line. */ |
1223 | if (isquote(*line->elements[i].item)) |
1224 | count++; |
1225 | |
1226 | len = strlen(line->elements[i].item); |
1227 | |
1228 | if (isquote(line->elements[i].item[len -1])) |
1229 | count++; |
1230 | |
1231 | /* ok, we get the final ' or ", others are extras. */ |
1232 | } |
1233 | line->elements[1].indent = |
1234 | line->elements[line->numElements - 2].indent; |
1235 | line->elements[1].item = buf; |
1236 | line->elements[2].indent = |
1237 | line->elements[line->numElements - 2].indent; |
1238 | line->elements[2].item = extras; |
1239 | line->numElements = 3; |
1240 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
1241 | /* Strip off any " which may be present; they'll be put back |
1242 | on write. This is one of the few (the only?) places that grubby |
1243 | canonicalizes the output */ |
1244 | |
1245 | if (line->numElements >= 2) { |
1246 | int last, len; |
1247 | |
1248 | if (isquote(*line->elements[1].item)) |
1249 | memmove(line->elements[1].item, line->elements[1].item + 1, |
1250 | strlen(line->elements[1].item + 1) + 1); |
1251 | |
1252 | last = line->numElements - 1; |
1253 | len = strlen(line->elements[last].item) - 1; |
1254 | if (isquote(line->elements[last].item[len])) |
1255 | line->elements[last].item[len] = '\0'; |
1256 | } |
1257 | } |
1258 | |
1259 | /* If we find a generic config option which should live at the |
1260 | top of the file, move it there. Old versions of grubby were |
1261 | probably responsible for putting new images in the wrong |
1262 | place in front of it anyway. */ |
1263 | if (sawEntry && line->type == LT_GENERIC) { |
1264 | struct singleLine **l = &cfg->theLines; |
1265 | struct singleLine **last_nonws = &cfg->theLines; |
1266 | while (*l) { |
1267 | if ((*l)->type != LT_WHITESPACE) |
1268 | last_nonws = &((*l)->next); |
1269 | l = &((*l)->next); |
1270 | } |
1271 | line->next = *last_nonws; |
1272 | *last_nonws = line; |
1273 | movedLine = 1; |
1274 | continue; /* without setting 'last' */ |
1275 | } |
1276 | |
1277 | /* If a second line of whitespace happens after a generic option |
1278 | which was moved, drop it. */ |
1279 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { |
1280 | lineFree(line); |
1281 | free(line); |
1282 | movedLine = 0; |
1283 | continue; |
1284 | } |
1285 | movedLine = 0; |
1286 | |
1287 | if (sawEntry) { |
1288 | if (!entry->lines) |
1289 | entry->lines = line; |
1290 | else |
1291 | last->next = line; |
1292 | dbgPrintf("readConfig added %s to %p\n", getKeyByType(line->type, cfi), entry); |
1293 | |
1294 | /* we could have seen this outside of an entry... if so, we |
1295 | * ignore it like any other line we don't grok */ |
1296 | if (line->type == LT_ENTRY_END && sawEntry) |
1297 | sawEntry = 0; |
1298 | } else { |
1299 | if (!cfg->theLines) |
1300 | cfg->theLines = line; |
1301 | else |
1302 | last->next = line; |
1303 | dbgPrintf("readConfig added %s to cfg\n", getKeyByType(line->type, cfi)); |
1304 | } |
1305 | |
1306 | last = line; |
1307 | } |
1308 | |
1309 | free(incoming); |
1310 | |
1311 | dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset"); |
1312 | if (defaultLine) { |
1313 | if (defaultLine->numElements > 2 && |
1314 | cfi->defaultSupportSaved && |
1315 | !strncmp(defaultLine->elements[2].item,"\"${saved_entry}\"", 16)) { |
1316 | cfg->cfi->defaultIsSaved = 1; |
1317 | cfg->defaultImage = DEFAULT_SAVED_GRUB2; |
1318 | if (cfg->cfi->getEnv) { |
1319 | char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry"); |
1320 | if (defTitle) { |
1321 | int index = 0; |
1322 | entry = findEntryByTitle(cfg, defTitle, &index); |
1323 | if (entry) |
1324 | cfg->defaultImage = index; |
1325 | } |
1326 | } |
1327 | } else if (cfi->defaultIsVariable) { |
1328 | char *value = defaultLine->elements[2].item; |
1329 | while (*value && (*value == '"' || *value == '\'' || |
1330 | *value == ' ' || *value == '\t')) |
1331 | value++; |
1332 | cfg->defaultImage = strtol(value, &end, 10); |
1333 | while (*end && (*end == '"' || *end == '\'' || |
1334 | *end == ' ' || *end == '\t')) |
1335 | end++; |
1336 | if (*end) cfg->defaultImage = -1; |
1337 | } else if (cfi->defaultSupportSaved && |
1338 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { |
1339 | cfg->defaultImage = DEFAULT_SAVED; |
1340 | } else if (cfi->defaultIsIndex) { |
1341 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); |
1342 | if (*end) cfg->defaultImage = -1; |
1343 | } else if (defaultLine->numElements >= 2) { |
1344 | int i = 0; |
1345 | while ((entry = findEntryByIndex(cfg, i))) { |
1346 | for (line = entry->lines; line; line = line->next) |
1347 | if (line->type == LT_TITLE) break; |
1348 | |
1349 | if (!cfi->titleBracketed) { |
1350 | if (line && (line->numElements >= 2) && |
1351 | !strcmp(defaultLine->elements[1].item, |
1352 | line->elements[1].item)) break; |
1353 | } else if (line) { |
1354 | if (!strcmp(defaultLine->elements[1].item, |
1355 | extractTitle(line))) break; |
1356 | } |
1357 | i++; |
1358 | entry = NULL; |
1359 | } |
1360 | |
1361 | if (entry){ |
1362 | cfg->defaultImage = i; |
1363 | }else{ |
1364 | cfg->defaultImage = -1; |
1365 | } |
1366 | } |
1367 | } else if (cfg->cfi->defaultIsSaved && cfg->cfi->getEnv) { |
1368 | char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry"); |
1369 | if (defTitle) { |
1370 | int index = 0; |
1371 | entry = findEntryByTitle(cfg, defTitle, &index); |
1372 | if (entry) |
1373 | cfg->defaultImage = index; |
1374 | } |
1375 | } else { |
1376 | cfg->defaultImage = 0; |
1377 | } |
1378 | |
1379 | return cfg; |
1380 | } |
1381 | |
1382 | static void writeDefault(FILE * out, char * indent, |
1383 | char * separator, struct grubConfig * cfg) { |
1384 | struct singleEntry * entry; |
1385 | struct singleLine * line; |
1386 | int i; |
1387 | |
1388 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; |
1389 | |
1390 | if (cfg->defaultImage == DEFAULT_SAVED) |
1391 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
1392 | else if (cfg->cfi->defaultIsSaved) { |
1393 | fprintf(out, "%sset default=\"${saved_entry}\"\n", indent); |
1394 | if (cfg->defaultImage >= 0 && cfg->cfi->setEnv) { |
1395 | char *title; |
1396 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
1397 | line = getLineByType(LT_MENUENTRY, entry->lines); |
1398 | if (!line) |
1399 | line = getLineByType(LT_TITLE, entry->lines); |
1400 | if (line) { |
1401 | title = extractTitle(line); |
1402 | if (title) |
1403 | cfg->cfi->setEnv(cfg->cfi, "saved_entry", title); |
1404 | } |
1405 | } |
1406 | } else if (cfg->defaultImage > -1) { |
1407 | if (cfg->cfi->defaultIsIndex) { |
1408 | if (cfg->cfi->defaultIsVariable) { |
1409 | fprintf(out, "%sset default=\"%d\"\n", indent, |
1410 | cfg->defaultImage); |
1411 | } else { |
1412 | fprintf(out, "%sdefault%s%d\n", indent, separator, |
1413 | cfg->defaultImage); |
1414 | } |
1415 | } else { |
1416 | int image = cfg->defaultImage; |
1417 | |
1418 | entry = cfg->entries; |
1419 | while (entry && entry->skip) entry = entry->next; |
1420 | |
1421 | i = 0; |
1422 | while (entry && i < image) { |
1423 | entry = entry->next; |
1424 | |
1425 | while (entry && entry->skip) entry = entry->next; |
1426 | i++; |
1427 | } |
1428 | |
1429 | if (!entry) return; |
1430 | |
1431 | line = getLineByType(LT_TITLE, entry->lines); |
1432 | |
1433 | if (line && line->numElements >= 2) |
1434 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1435 | line->elements[1].item); |
1436 | else if (line && (line->numElements == 1) && |
1437 | cfg->cfi->titleBracketed) { |
1438 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1439 | extractTitle(line)); |
1440 | } |
1441 | } |
1442 | } |
1443 | } |
1444 | |
1445 | static int writeConfig(struct grubConfig * cfg, char * outName, |
1446 | const char * prefix) { |
1447 | FILE * out; |
1448 | struct singleLine * line; |
1449 | struct singleEntry * entry; |
1450 | char * tmpOutName; |
1451 | int needs = MAIN_DEFAULT; |
1452 | struct stat sb; |
1453 | int i; |
1454 | |
1455 | if (!strcmp(outName, "-")) { |
1456 | out = stdout; |
1457 | tmpOutName = NULL; |
1458 | } else { |
1459 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
1460 | char * buf; |
1461 | int len = 256; |
1462 | int rc; |
1463 | |
1464 | /* most likely the symlink is relative, so change our |
1465 | directory to the dir of the symlink */ |
1466 | char *dir = strdupa(outName); |
1467 | rc = chdir(dirname(dir)); |
1468 | do { |
1469 | buf = alloca(len + 1); |
1470 | rc = readlink(basename(outName), buf, len); |
1471 | if (rc == len) len += 256; |
1472 | } while (rc == len); |
1473 | |
1474 | if (rc < 0) { |
1475 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), |
1476 | outName, strerror(errno)); |
1477 | return 1; |
1478 | } |
1479 | |
1480 | outName = buf; |
1481 | outName[rc] = '\0'; |
1482 | } |
1483 | |
1484 | tmpOutName = alloca(strlen(outName) + 2); |
1485 | sprintf(tmpOutName, "%s-", outName); |
1486 | out = fopen(tmpOutName, "w"); |
1487 | if (!out) { |
1488 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, |
1489 | strerror(errno)); |
1490 | return 1; |
1491 | } |
1492 | |
1493 | if (!stat(outName, &sb)) { |
1494 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
1495 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), |
1496 | tmpOutName, strerror(errno)); |
1497 | fclose(out); |
1498 | unlink(tmpOutName); |
1499 | return 1; |
1500 | } |
1501 | } |
1502 | } |
1503 | |
1504 | line = cfg->theLines; |
1505 | struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi); |
1506 | while (line) { |
1507 | if (line->type == LT_SET_VARIABLE && defaultKw && |
1508 | line->numElements == 3 && |
1509 | !strcmp(line->elements[1].item, defaultKw->key) && |
1510 | !is_special_grub2_variable(line->elements[2].item)) { |
1511 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1512 | needs &= ~MAIN_DEFAULT; |
1513 | } else if (line->type == LT_DEFAULT) { |
1514 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1515 | needs &= ~MAIN_DEFAULT; |
1516 | } else if (line->type == LT_FALLBACK) { |
1517 | if (cfg->fallbackImage > -1) |
1518 | fprintf(out, "%s%s%s%d\n", line->indent, |
1519 | line->elements[0].item, line->elements[0].indent, |
1520 | cfg->fallbackImage); |
1521 | } else { |
1522 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1523 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1524 | tmpOutName, strerror(errno)); |
1525 | fclose(out); |
1526 | unlink(tmpOutName); |
1527 | return 1; |
1528 | } |
1529 | } |
1530 | |
1531 | line = line->next; |
1532 | } |
1533 | |
1534 | if (needs & MAIN_DEFAULT) { |
1535 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
1536 | needs &= ~MAIN_DEFAULT; |
1537 | } |
1538 | |
1539 | i = 0; |
1540 | while ((entry = findEntryByIndex(cfg, i++))) { |
1541 | if (entry->skip) continue; |
1542 | |
1543 | line = entry->lines; |
1544 | while (line) { |
1545 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1546 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1547 | tmpOutName, strerror(errno)); |
1548 | fclose(out); |
1549 | unlink(tmpOutName); |
1550 | return 1; |
1551 | } |
1552 | line = line->next; |
1553 | } |
1554 | } |
1555 | |
1556 | if (tmpOutName) { |
1557 | if (rename(tmpOutName, outName)) { |
1558 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), |
1559 | tmpOutName, outName, strerror(errno)); |
1560 | unlink(outName); |
1561 | return 1; |
1562 | } |
1563 | } |
1564 | |
1565 | return 0; |
1566 | } |
1567 | |
1568 | static int numEntries(struct grubConfig *cfg) { |
1569 | int i = 0; |
1570 | struct singleEntry * entry; |
1571 | |
1572 | entry = cfg->entries; |
1573 | while (entry) { |
1574 | if (!entry->skip) |
1575 | i++; |
1576 | entry = entry->next; |
1577 | } |
1578 | return i; |
1579 | } |
1580 | |
1581 | static char *findDiskForRoot() |
1582 | { |
1583 | int fd; |
1584 | char buf[65536]; |
1585 | char *devname; |
1586 | char *chptr; |
1587 | int rc; |
1588 | |
1589 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { |
1590 | fprintf(stderr, "grubby: failed to open %s: %s\n", |
1591 | _PATH_MOUNTED, strerror(errno)); |
1592 | return NULL; |
1593 | } |
1594 | |
1595 | rc = read(fd, buf, sizeof(buf) - 1); |
1596 | if (rc <= 0) { |
1597 | fprintf(stderr, "grubby: failed to read %s: %s\n", |
1598 | _PATH_MOUNTED, strerror(errno)); |
1599 | close(fd); |
1600 | return NULL; |
1601 | } |
1602 | close(fd); |
1603 | buf[rc] = '\0'; |
1604 | chptr = buf; |
1605 | |
1606 | char *foundanswer = NULL; |
1607 | |
1608 | while (chptr && chptr != buf+rc) { |
1609 | devname = chptr; |
1610 | |
1611 | /* |
1612 | * The first column of a mtab entry is the device, but if the entry is a |
1613 | * special device it won't start with /, so move on to the next line. |
1614 | */ |
1615 | if (*devname != '/') { |
1616 | chptr = strchr(chptr, '\n'); |
1617 | if (chptr) |
1618 | chptr++; |
1619 | continue; |
1620 | } |
1621 | |
1622 | /* Seek to the next space */ |
1623 | chptr = strchr(chptr, ' '); |
1624 | if (!chptr) { |
1625 | fprintf(stderr, "grubby: error parsing %s: %s\n", |
1626 | _PATH_MOUNTED, strerror(errno)); |
1627 | return NULL; |
1628 | } |
1629 | |
1630 | /* |
1631 | * The second column of a mtab entry is the mount point, we are looking |
1632 | * for '/' obviously. |
1633 | */ |
1634 | if (*(++chptr) == '/' && *(++chptr) == ' ') { |
1635 | /* remember the last / entry in mtab */ |
1636 | foundanswer = devname; |
1637 | } |
1638 | |
1639 | /* Next line */ |
1640 | chptr = strchr(chptr, '\n'); |
1641 | if (chptr) |
1642 | chptr++; |
1643 | } |
1644 | |
1645 | /* Return the last / entry found */ |
1646 | if (foundanswer) { |
1647 | chptr = strchr(foundanswer, ' '); |
1648 | *chptr = '\0'; |
1649 | return strdup(foundanswer); |
1650 | } |
1651 | |
1652 | return NULL; |
1653 | } |
1654 | |
1655 | void printEntry(struct singleEntry * entry, FILE *f) { |
1656 | int i; |
1657 | struct singleLine * line; |
1658 | |
1659 | for (line = entry->lines; line; line = line->next) { |
1660 | log_message(f, "DBG: %s", line->indent); |
1661 | for (i = 0; i < line->numElements; i++) { |
1662 | /* Need to handle this, because we strip the quotes from |
1663 | * menuentry when read it. */ |
1664 | if (line->type == LT_MENUENTRY && i == 1) { |
1665 | if(!isquote(*line->elements[i].item)) |
1666 | log_message(f, "\'%s\'", line->elements[i].item); |
1667 | else |
1668 | log_message(f, "%s", line->elements[i].item); |
1669 | log_message(f, "%s", line->elements[i].indent); |
1670 | |
1671 | continue; |
1672 | } |
1673 | |
1674 | log_message(f, "%s%s", |
1675 | line->elements[i].item, line->elements[i].indent); |
1676 | } |
1677 | log_message(f, "\n"); |
1678 | } |
1679 | } |
1680 | |
1681 | void notSuitablePrintf(struct singleEntry * entry, int okay, const char *fmt, ...) |
1682 | { |
1683 | static int once; |
1684 | va_list argp, argq; |
1685 | |
1686 | va_start(argp, fmt); |
1687 | |
1688 | va_copy(argq, argp); |
1689 | if (!once) { |
1690 | log_time(NULL); |
1691 | log_message(NULL, "command line: %s\n", saved_command_line); |
1692 | } |
1693 | log_message(NULL, "DBG: Image entry %s: ", okay ? "succeeded" : "failed"); |
1694 | log_vmessage(NULL, fmt, argq); |
1695 | |
1696 | printEntry(entry, NULL); |
1697 | va_end(argq); |
1698 | |
1699 | if (!debug) { |
1700 | once = 1; |
1701 | va_end(argp); |
1702 | return; |
1703 | } |
1704 | |
1705 | if (okay) { |
1706 | va_end(argp); |
1707 | return; |
1708 | } |
1709 | |
1710 | if (!once) |
1711 | log_message(stderr, "DBG: command line: %s\n", saved_command_line); |
1712 | once = 1; |
1713 | fprintf(stderr, "DBG: Image entry failed: "); |
1714 | vfprintf(stderr, fmt, argp); |
1715 | printEntry(entry, stderr); |
1716 | va_end(argp); |
1717 | } |
1718 | |
1719 | #define beginswith(s, c) ((s) && (s)[0] == (c)) |
1720 | |
1721 | static int endswith(const char *s, char c) |
1722 | { |
1723 | int slen; |
1724 | |
1725 | if (!s || !s[0]) |
1726 | return 0; |
1727 | slen = strlen(s) - 1; |
1728 | |
1729 | return s[slen] == c; |
1730 | } |
1731 | |
1732 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, |
1733 | int skipRemoved, int flags) { |
1734 | struct singleLine * line; |
1735 | char * fullName; |
1736 | int i; |
1737 | char * dev; |
1738 | char * rootspec; |
1739 | char * rootdev; |
1740 | |
1741 | if (skipRemoved && entry->skip) { |
1742 | notSuitablePrintf(entry, 0, "marked to skip\n"); |
1743 | return 0; |
1744 | } |
1745 | |
1746 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
1747 | if (!line) { |
1748 | notSuitablePrintf(entry, 0, "no line found\n"); |
1749 | return 0; |
1750 | } |
1751 | if (line->numElements < 2) { |
1752 | notSuitablePrintf(entry, 0, "line has only %d elements\n", |
1753 | line->numElements); |
1754 | return 0; |
1755 | } |
1756 | |
1757 | if (flags & GRUBBY_BADIMAGE_OKAY) { |
1758 | notSuitablePrintf(entry, 1, "\n"); |
1759 | return 1; |
1760 | } |
1761 | |
1762 | fullName = alloca(strlen(bootPrefix) + |
1763 | strlen(line->elements[1].item) + 1); |
1764 | rootspec = getRootSpecifier(line->elements[1].item); |
1765 | int rootspec_offset = rootspec ? strlen(rootspec) : 0; |
1766 | int hasslash = endswith(bootPrefix, '/') || |
1767 | beginswith(line->elements[1].item + rootspec_offset, '/'); |
1768 | sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/", |
1769 | line->elements[1].item + rootspec_offset); |
1770 | if (access(fullName, R_OK)) { |
1771 | notSuitablePrintf(entry, 0, "access to %s failed\n", fullName); |
1772 | return 0; |
1773 | } |
1774 | for (i = 2; i < line->numElements; i++) |
1775 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1776 | if (i < line->numElements) { |
1777 | dev = line->elements[i].item + 5; |
1778 | } else { |
1779 | /* look for a lilo style LT_ROOT line */ |
1780 | line = getLineByType(LT_ROOT, entry->lines); |
1781 | |
1782 | if (line && line->numElements >= 2) { |
1783 | dev = line->elements[1].item; |
1784 | } else { |
1785 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS. |
1786 | * grub+multiboot uses LT_MBMODULE for the args, so check that too. |
1787 | */ |
1788 | line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines); |
1789 | |
1790 | /* failed to find one */ |
1791 | if (!line) { |
1792 | notSuitablePrintf(entry, 0, "no line found\n"); |
1793 | return 0; |
1794 | } |
1795 | |
1796 | for (i = 1; i < line->numElements; i++) |
1797 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1798 | if (i < line->numElements) |
1799 | dev = line->elements[i].item + 5; |
1800 | else { |
1801 | notSuitablePrintf(entry, 0, "no root= entry found\n"); |
1802 | /* it failed too... can't find root= */ |
1803 | return 0; |
1804 | } |
1805 | } |
1806 | } |
1807 | |
1808 | dev = getpathbyspec(dev); |
1809 | if (!getpathbyspec(dev)) { |
1810 | notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n", dev); |
1811 | return 0; |
1812 | } else |
1813 | dev = getpathbyspec(dev); |
1814 | |
1815 | rootdev = findDiskForRoot(); |
1816 | if (!rootdev) { |
1817 | notSuitablePrintf(entry, 0, "can't find root device\n"); |
1818 | return 0; |
1819 | } |
1820 | |
1821 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
1822 | notSuitablePrintf(entry, 0, "uuid missing: rootdev %s, dev %s\n", |
1823 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1824 | free(rootdev); |
1825 | return 0; |
1826 | } |
1827 | |
1828 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
1829 | notSuitablePrintf(entry, 0, "uuid mismatch: rootdev %s, dev %s\n", |
1830 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1831 | free(rootdev); |
1832 | return 0; |
1833 | } |
1834 | |
1835 | free(rootdev); |
1836 | notSuitablePrintf(entry, 1, "\n"); |
1837 | |
1838 | return 1; |
1839 | } |
1840 | |
1841 | /* returns the first match on or after the one pointed to by index (if index |
1842 | is not NULL) which is not marked as skip */ |
1843 | struct singleEntry * findEntryByPath(struct grubConfig * config, |
1844 | const char * kernel, const char * prefix, |
1845 | int * index) { |
1846 | struct singleEntry * entry = NULL; |
1847 | struct singleLine * line; |
1848 | int i; |
1849 | char * chptr; |
1850 | char * rootspec = NULL; |
1851 | enum lineType_e checkType = LT_KERNEL; |
1852 | |
1853 | if (isdigit(*kernel)) { |
1854 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
1855 | |
1856 | i = 0; |
1857 | indexVars[i] = strtol(kernel, &chptr, 10); |
1858 | while (*chptr == ',') { |
1859 | i++; |
1860 | kernel = chptr + 1; |
1861 | indexVars[i] = strtol(kernel, &chptr, 10); |
1862 | } |
1863 | |
1864 | if (*chptr) { |
1865 | /* can't parse it, bail */ |
1866 | return NULL; |
1867 | } |
1868 | |
1869 | indexVars[i + 1] = -1; |
1870 | |
1871 | i = 0; |
1872 | if (index) { |
1873 | while (i < *index) i++; |
1874 | if (indexVars[i] == -1) return NULL; |
1875 | } |
1876 | |
1877 | entry = findEntryByIndex(config, indexVars[i]); |
1878 | if (!entry) return NULL; |
1879 | |
1880 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
1881 | if (!line) return NULL; |
1882 | |
1883 | if (index) *index = indexVars[i]; |
1884 | return entry; |
1885 | } |
1886 | |
1887 | if (!strcmp(kernel, "DEFAULT")) { |
1888 | if (index && *index > config->defaultImage) { |
1889 | entry = NULL; |
1890 | } else { |
1891 | entry = findEntryByIndex(config, config->defaultImage); |
1892 | if (entry && entry->skip) |
1893 | entry = NULL; |
1894 | else if (index) |
1895 | *index = config->defaultImage; |
1896 | } |
1897 | } else if (!strcmp(kernel, "ALL")) { |
1898 | if (index) |
1899 | i = *index; |
1900 | else |
1901 | i = 0; |
1902 | |
1903 | while ((entry = findEntryByIndex(config, i))) { |
1904 | if (!entry->skip) break; |
1905 | i++; |
1906 | } |
1907 | |
1908 | if (entry && index) |
1909 | *index = i; |
1910 | } else { |
1911 | if (index) |
1912 | i = *index; |
1913 | else |
1914 | i = 0; |
1915 | |
1916 | if (!strncmp(kernel, "TITLE=", 6)) { |
1917 | prefix = ""; |
1918 | checkType = LT_TITLE|LT_MENUENTRY; |
1919 | kernel += 6; |
1920 | } |
1921 | |
1922 | for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) { |
1923 | if (entry->skip) continue; |
1924 | |
1925 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry); |
1926 | |
1927 | /* check all the lines matching checkType */ |
1928 | for (line = entry->lines; line; line = line->next) { |
1929 | enum lineType_e ct = checkType; |
1930 | if (entry->multiboot && checkType == LT_KERNEL) |
1931 | ct = LT_KERNEL|LT_KERNEL_EFI|LT_MBMODULE|LT_HYPER; |
1932 | else if (checkType & LT_KERNEL) |
1933 | ct = checkType | LT_KERNEL_EFI; |
1934 | line = getLineByType(ct, line); |
1935 | if (!line) |
1936 | break; /* not found in this entry */ |
1937 | |
1938 | if (line && line->type != LT_MENUENTRY && |
1939 | line->numElements >= 2) { |
1940 | rootspec = getRootSpecifier(line->elements[1].item); |
1941 | if (!strcmp(line->elements[1].item + |
1942 | ((rootspec != NULL) ? strlen(rootspec) : 0), |
1943 | kernel + strlen(prefix))) |
1944 | break; |
1945 | } |
1946 | if(line->type == LT_MENUENTRY && |
1947 | !strcmp(line->elements[1].item, kernel)) |
1948 | break; |
1949 | } |
1950 | |
1951 | /* make sure this entry has a kernel identifier; this skips |
1952 | * non-Linux boot entries (could find netbsd etc, though, which is |
1953 | * unfortunate) |
1954 | */ |
1955 | if (line && getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines)) |
1956 | break; /* found 'im! */ |
1957 | } |
1958 | |
1959 | if (index) *index = i; |
1960 | } |
1961 | |
1962 | return entry; |
1963 | } |
1964 | |
1965 | struct singleEntry * findEntryByTitle(struct grubConfig * cfg, char *title, |
1966 | int * index) { |
1967 | struct singleEntry * entry; |
1968 | struct singleLine * line; |
1969 | int i; |
1970 | char * newtitle; |
1971 | |
1972 | for (i = 0, entry = cfg->entries; entry; entry = entry->next, i++) { |
1973 | if (index && i < *index) |
1974 | continue; |
1975 | line = getLineByType(LT_TITLE, entry->lines); |
1976 | if (!line) |
1977 | line = getLineByType(LT_MENUENTRY, entry->lines); |
1978 | if (!line) |
1979 | continue; |
1980 | newtitle = grub2ExtractTitle(line); |
1981 | if (!newtitle) |
1982 | continue; |
1983 | if (!strcmp(title, newtitle)) |
1984 | break; |
1985 | } |
1986 | |
1987 | if (!entry) |
1988 | return NULL; |
1989 | |
1990 | if (index) |
1991 | *index = i; |
1992 | return entry; |
1993 | } |
1994 | |
1995 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { |
1996 | struct singleEntry * entry; |
1997 | |
1998 | entry = cfg->entries; |
1999 | while (index && entry) { |
2000 | entry = entry->next; |
2001 | index--; |
2002 | } |
2003 | |
2004 | return entry; |
2005 | } |
2006 | |
2007 | /* Find a good template to use for the new kernel. An entry is |
2008 | * good if the kernel and mkinitrd exist (even if the entry |
2009 | * is going to be removed). Try and use the default entry, but |
2010 | * if that doesn't work just take the first. If we can't find one, |
2011 | * bail. */ |
2012 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, |
2013 | int * indexPtr, int skipRemoved, int flags) { |
2014 | struct singleEntry * entry, * entry2; |
2015 | int index; |
2016 | |
2017 | if (cfg->cfi->defaultIsSaved) { |
2018 | if (cfg->cfi->getEnv) { |
2019 | char *defTitle = cfg->cfi->getEnv(cfg->cfi, "saved_entry"); |
2020 | if (defTitle) { |
2021 | int index = 0; |
2022 | entry = findEntryByTitle(cfg, defTitle, &index); |
2023 | } |
2024 | } |
2025 | } else if (cfg->defaultImage > -1) { |
2026 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
2027 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
2028 | if (indexPtr) *indexPtr = cfg->defaultImage; |
2029 | return entry; |
2030 | } |
2031 | } |
2032 | |
2033 | index = 0; |
2034 | while ((entry = findEntryByIndex(cfg, index))) { |
2035 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
2036 | int j; |
2037 | for (j = 0; j < index; j++) { |
2038 | entry2 = findEntryByIndex(cfg, j); |
2039 | if (entry2->skip) index--; |
2040 | } |
2041 | if (indexPtr) *indexPtr = index; |
2042 | |
2043 | return entry; |
2044 | } |
2045 | |
2046 | index++; |
2047 | } |
2048 | |
2049 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); |
2050 | |
2051 | return NULL; |
2052 | } |
2053 | |
2054 | char * findBootPrefix(void) { |
2055 | struct stat sb, sb2; |
2056 | |
2057 | stat("/", &sb); |
2058 | #ifdef __ia64__ |
2059 | stat("/boot/efi/EFI/redhat/", &sb2); |
2060 | #else |
2061 | stat("/boot", &sb2); |
2062 | #endif |
2063 | |
2064 | if (sb.st_dev == sb2.st_dev) |
2065 | return strdup(""); |
2066 | |
2067 | #ifdef __ia64__ |
2068 | return strdup("/boot/efi/EFI/redhat/"); |
2069 | #else |
2070 | return strdup("/boot"); |
2071 | #endif |
2072 | } |
2073 | |
2074 | void markRemovedImage(struct grubConfig * cfg, const char * image, |
2075 | const char * prefix) { |
2076 | struct singleEntry * entry; |
2077 | |
2078 | if (!image) |
2079 | return; |
2080 | |
2081 | /* check and see if we're removing the default image */ |
2082 | if (isdigit(*image)) { |
2083 | entry = findEntryByPath(cfg, image, prefix, NULL); |
2084 | if(entry) |
2085 | entry->skip = 1; |
2086 | return; |
2087 | } |
2088 | |
2089 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
2090 | entry->skip = 1; |
2091 | } |
2092 | |
2093 | void setDefaultImage(struct grubConfig * config, int hasNew, |
2094 | const char * defaultKernelPath, int newIsDefault, |
2095 | const char * prefix, int flags, int index) { |
2096 | struct singleEntry * entry, * entry2, * newDefault; |
2097 | int i, j; |
2098 | |
2099 | if (newIsDefault) { |
2100 | config->defaultImage = 0; |
2101 | return; |
2102 | } else if ((index >= 0) && config->cfi->defaultIsIndex) { |
2103 | if (findEntryByIndex(config, index)) |
2104 | config->defaultImage = index; |
2105 | else |
2106 | config->defaultImage = -1; |
2107 | return; |
2108 | } else if (defaultKernelPath) { |
2109 | i = 0; |
2110 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { |
2111 | config->defaultImage = i; |
2112 | } else { |
2113 | config->defaultImage = -1; |
2114 | return; |
2115 | } |
2116 | } |
2117 | |
2118 | /* defaultImage now points to what we'd like to use, but before any order |
2119 | changes */ |
2120 | if ((config->defaultImage == DEFAULT_SAVED) || |
2121 | (config->defaultImage == DEFAULT_SAVED_GRUB2)) |
2122 | /* default is set to saved, we don't want to change it */ |
2123 | return; |
2124 | |
2125 | if (config->defaultImage > -1) |
2126 | entry = findEntryByIndex(config, config->defaultImage); |
2127 | else |
2128 | entry = NULL; |
2129 | |
2130 | if (entry && !entry->skip) { |
2131 | /* we can preserve the default */ |
2132 | if (hasNew) |
2133 | config->defaultImage++; |
2134 | |
2135 | /* count the number of entries erased before this one */ |
2136 | for (j = 0; j < config->defaultImage; j++) { |
2137 | entry2 = findEntryByIndex(config, j); |
2138 | if (entry2->skip) config->defaultImage--; |
2139 | } |
2140 | } else if (hasNew) { |
2141 | config->defaultImage = 0; |
2142 | } else { |
2143 | /* Either we just erased the default (or the default line was bad |
2144 | * to begin with) and didn't put a new one in. We'll use the first |
2145 | * valid image. */ |
2146 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, |
2147 | flags); |
2148 | if (!newDefault) |
2149 | config->defaultImage = -1; |
2150 | } |
2151 | } |
2152 | |
2153 | void setFallbackImage(struct grubConfig * config, int hasNew) { |
2154 | struct singleEntry * entry, * entry2; |
2155 | int j; |
2156 | |
2157 | if (config->fallbackImage == -1) return; |
2158 | |
2159 | entry = findEntryByIndex(config, config->fallbackImage); |
2160 | if (!entry || entry->skip) { |
2161 | config->fallbackImage = -1; |
2162 | return; |
2163 | } |
2164 | |
2165 | if (hasNew) |
2166 | config->fallbackImage++; |
2167 | |
2168 | /* count the number of entries erased before this one */ |
2169 | for (j = 0; j < config->fallbackImage; j++) { |
2170 | entry2 = findEntryByIndex(config, j); |
2171 | if (entry2->skip) config->fallbackImage--; |
2172 | } |
2173 | } |
2174 | |
2175 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { |
2176 | struct singleLine * line; |
2177 | char * root = NULL; |
2178 | int i; |
2179 | |
2180 | printf("index=%d\n", index); |
2181 | |
2182 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
2183 | if (!line) { |
2184 | printf("non linux entry\n"); |
2185 | return; |
2186 | } |
2187 | |
2188 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2189 | printf("kernel=%s\n", line->elements[1].item); |
2190 | else |
2191 | printf("kernel=%s%s\n", prefix, line->elements[1].item); |
2192 | |
2193 | if (line->numElements >= 3) { |
2194 | printf("args=\""); |
2195 | i = 2; |
2196 | while (i < line->numElements) { |
2197 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
2198 | root = line->elements[i].item + 5; |
2199 | } else { |
2200 | printf("%s%s", line->elements[i].item, |
2201 | line->elements[i].indent); |
2202 | } |
2203 | |
2204 | i++; |
2205 | } |
2206 | printf("\"\n"); |
2207 | } else { |
2208 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2209 | if (line) { |
2210 | char * s; |
2211 | |
2212 | printf("args=\""); |
2213 | i = 1; |
2214 | while (i < line->numElements) { |
2215 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
2216 | root = line->elements[i].item + 5; |
2217 | } else { |
2218 | s = line->elements[i].item; |
2219 | |
2220 | printf("%s%s", s, line->elements[i].indent); |
2221 | } |
2222 | |
2223 | i++; |
2224 | } |
2225 | |
2226 | s = line->elements[i - 1].indent; |
2227 | printf("\"\n"); |
2228 | } |
2229 | } |
2230 | |
2231 | if (!root) { |
2232 | line = getLineByType(LT_ROOT, entry->lines); |
2233 | if (line && line->numElements >= 2) |
2234 | root=line->elements[1].item; |
2235 | } |
2236 | |
2237 | if (root) { |
2238 | char * s = alloca(strlen(root) + 1); |
2239 | |
2240 | strcpy(s, root); |
2241 | if (s[strlen(s) - 1] == '"') |
2242 | s[strlen(s) - 1] = '\0'; |
2243 | /* make sure the root doesn't have a trailing " */ |
2244 | printf("root=%s\n", s); |
2245 | } |
2246 | |
2247 | line = getLineByType(LT_INITRD|LT_INITRD_EFI, entry->lines); |
2248 | |
2249 | if (line && line->numElements >= 2) { |
2250 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2251 | printf("initrd="); |
2252 | else |
2253 | printf("initrd=%s", prefix); |
2254 | |
2255 | for (i = 1; i < line->numElements; i++) |
2256 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
2257 | printf("\n"); |
2258 | } |
2259 | |
2260 | line = getLineByType(LT_TITLE, entry->lines); |
2261 | if (line) { |
2262 | printf("title=%s\n", line->elements[1].item); |
2263 | } else { |
2264 | char * title; |
2265 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2266 | title = grub2ExtractTitle(line); |
2267 | if (title) |
2268 | printf("title=%s\n", title); |
2269 | } |
2270 | } |
2271 | |
2272 | int isSuseSystem(void) { |
2273 | const char * path; |
2274 | const static char default_path[] = "/etc/SuSE-release"; |
2275 | |
2276 | if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL) |
2277 | path = default_path; |
2278 | |
2279 | if (!access(path, R_OK)) |
2280 | return 1; |
2281 | return 0; |
2282 | } |
2283 | |
2284 | int isSuseGrubConf(const char * path) { |
2285 | FILE * grubConf; |
2286 | char * line = NULL; |
2287 | size_t len = 0, res = 0; |
2288 | |
2289 | grubConf = fopen(path, "r"); |
2290 | if (!grubConf) { |
2291 | dbgPrintf("Could not open SuSE configuration file '%s'\n", path); |
2292 | return 0; |
2293 | } |
2294 | |
2295 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2296 | if (!strncmp(line, "setup", 5)) { |
2297 | fclose(grubConf); |
2298 | free(line); |
2299 | return 1; |
2300 | } |
2301 | } |
2302 | |
2303 | dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n", |
2304 | path); |
2305 | |
2306 | fclose(grubConf); |
2307 | free(line); |
2308 | return 0; |
2309 | } |
2310 | |
2311 | int suseGrubConfGetLba(const char * path, int * lbaPtr) { |
2312 | FILE * grubConf; |
2313 | char * line = NULL; |
2314 | size_t res = 0, len = 0; |
2315 | |
2316 | if (!path) return 1; |
2317 | if (!lbaPtr) return 1; |
2318 | |
2319 | grubConf = fopen(path, "r"); |
2320 | if (!grubConf) return 1; |
2321 | |
2322 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2323 | if (line[res - 1] == '\n') |
2324 | line[res - 1] = '\0'; |
2325 | else if (len > res) |
2326 | line[res] = '\0'; |
2327 | else { |
2328 | line = realloc(line, res + 1); |
2329 | line[res] = '\0'; |
2330 | } |
2331 | |
2332 | if (!strncmp(line, "setup", 5)) { |
2333 | if (strstr(line, "--force-lba")) { |
2334 | *lbaPtr = 1; |
2335 | } else { |
2336 | *lbaPtr = 0; |
2337 | } |
2338 | dbgPrintf("lba: %i\n", *lbaPtr); |
2339 | break; |
2340 | } |
2341 | } |
2342 | |
2343 | free(line); |
2344 | fclose(grubConf); |
2345 | return 0; |
2346 | } |
2347 | |
2348 | int suseGrubConfGetInstallDevice(const char * path, char ** devicePtr) { |
2349 | FILE * grubConf; |
2350 | char * line = NULL; |
2351 | size_t res = 0, len = 0; |
2352 | char * lastParamPtr = NULL; |
2353 | char * secLastParamPtr = NULL; |
2354 | char installDeviceNumber = '\0'; |
2355 | char * bounds = NULL; |
2356 | |
2357 | if (!path) return 1; |
2358 | if (!devicePtr) return 1; |
2359 | |
2360 | grubConf = fopen(path, "r"); |
2361 | if (!grubConf) return 1; |
2362 | |
2363 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2364 | if (strncmp(line, "setup", 5)) |
2365 | continue; |
2366 | |
2367 | if (line[res - 1] == '\n') |
2368 | line[res - 1] = '\0'; |
2369 | else if (len > res) |
2370 | line[res] = '\0'; |
2371 | else { |
2372 | line = realloc(line, res + 1); |
2373 | line[res] = '\0'; |
2374 | } |
2375 | |
2376 | lastParamPtr = bounds = line + res; |
2377 | |
2378 | /* Last parameter in grub may be an optional IMAGE_DEVICE */ |
2379 | while (!isspace(*lastParamPtr)) |
2380 | lastParamPtr--; |
2381 | lastParamPtr++; |
2382 | |
2383 | secLastParamPtr = lastParamPtr - 2; |
2384 | dbgPrintf("lastParamPtr: %s\n", lastParamPtr); |
2385 | |
2386 | if (lastParamPtr + 3 > bounds) { |
2387 | dbgPrintf("lastParamPtr going over boundary"); |
2388 | fclose(grubConf); |
2389 | free(line); |
2390 | return 1; |
2391 | } |
2392 | if (!strncmp(lastParamPtr, "(hd", 3)) |
2393 | lastParamPtr += 3; |
2394 | dbgPrintf("lastParamPtr: %c\n", *lastParamPtr); |
2395 | |
2396 | /* |
2397 | * Second last parameter will decide wether last parameter is |
2398 | * an IMAGE_DEVICE or INSTALL_DEVICE |
2399 | */ |
2400 | while (!isspace(*secLastParamPtr)) |
2401 | secLastParamPtr--; |
2402 | secLastParamPtr++; |
2403 | |
2404 | if (secLastParamPtr + 3 > bounds) { |
2405 | dbgPrintf("secLastParamPtr going over boundary"); |
2406 | fclose(grubConf); |
2407 | free(line); |
2408 | return 1; |
2409 | } |
2410 | dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr); |
2411 | if (!strncmp(secLastParamPtr, "(hd", 3)) { |
2412 | secLastParamPtr += 3; |
2413 | dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr); |
2414 | installDeviceNumber = *secLastParamPtr; |
2415 | } else { |
2416 | installDeviceNumber = *lastParamPtr; |
2417 | } |
2418 | |
2419 | *devicePtr = malloc(6); |
2420 | snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber); |
2421 | dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber); |
2422 | fclose(grubConf); |
2423 | free(line); |
2424 | return 0; |
2425 | } |
2426 | |
2427 | free(line); |
2428 | fclose(grubConf); |
2429 | return 1; |
2430 | } |
2431 | |
2432 | int grubGetBootFromDeviceMap(const char * device, |
2433 | char ** bootPtr) { |
2434 | FILE * deviceMap; |
2435 | char * line = NULL; |
2436 | size_t res = 0, len = 0; |
2437 | char * devicePtr; |
2438 | char * bounds = NULL; |
2439 | const char * path; |
2440 | const static char default_path[] = "/boot/grub/device.map"; |
2441 | |
2442 | if (!device) return 1; |
2443 | if (!bootPtr) return 1; |
2444 | |
2445 | if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL) |
2446 | path = default_path; |
2447 | |
2448 | dbgPrintf("opening grub device.map file from: %s\n", path); |
2449 | deviceMap = fopen(path, "r"); |
2450 | if (!deviceMap) |
2451 | return 1; |
2452 | |
2453 | while ((res = getline(&line, &len, deviceMap)) != -1) { |
2454 | if (!strncmp(line, "#", 1)) |
2455 | continue; |
2456 | |
2457 | if (line[res - 1] == '\n') |
2458 | line[res - 1] = '\0'; |
2459 | else if (len > res) |
2460 | line[res] = '\0'; |
2461 | else { |
2462 | line = realloc(line, res + 1); |
2463 | line[res] = '\0'; |
2464 | } |
2465 | |
2466 | devicePtr = line; |
2467 | bounds = line + res; |
2468 | |
2469 | while ((isspace(*line) && ((devicePtr + 1) <= bounds))) |
2470 | devicePtr++; |
2471 | dbgPrintf("device: %s\n", devicePtr); |
2472 | |
2473 | if (!strncmp(devicePtr, device, strlen(device))) { |
2474 | devicePtr += strlen(device); |
2475 | while (isspace(*devicePtr) && ((devicePtr + 1) <= bounds)) |
2476 | devicePtr++; |
2477 | |
2478 | *bootPtr = strdup(devicePtr); |
2479 | break; |
2480 | } |
2481 | } |
2482 | |
2483 | free(line); |
2484 | fclose(deviceMap); |
2485 | return 0; |
2486 | } |
2487 | |
2488 | int suseGrubConfGetBoot(const char * path, char ** bootPtr) { |
2489 | char * grubDevice; |
2490 | |
2491 | if (suseGrubConfGetInstallDevice(path, &grubDevice)) |
2492 | dbgPrintf("error looking for grub installation device\n"); |
2493 | else |
2494 | dbgPrintf("grubby installation device: %s\n", grubDevice); |
2495 | |
2496 | if (grubGetBootFromDeviceMap(grubDevice, bootPtr)) |
2497 | dbgPrintf("error looking for grub boot device\n"); |
2498 | else |
2499 | dbgPrintf("grubby boot device: %s\n", *bootPtr); |
2500 | |
2501 | free(grubDevice); |
2502 | return 0; |
2503 | } |
2504 | |
2505 | int parseSuseGrubConf(int * lbaPtr, char ** bootPtr) { |
2506 | /* |
2507 | * This SuSE grub configuration file at this location is not your average |
2508 | * grub configuration file, but instead the grub commands used to setup |
2509 | * grub on that system. |
2510 | */ |
2511 | const char * path; |
2512 | const static char default_path[] = "/etc/grub.conf"; |
2513 | |
2514 | if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL) |
2515 | path = default_path; |
2516 | |
2517 | if (!isSuseGrubConf(path)) return 1; |
2518 | |
2519 | if (lbaPtr) { |
2520 | *lbaPtr = 0; |
2521 | if (suseGrubConfGetLba(path, lbaPtr)) |
2522 | return 1; |
2523 | } |
2524 | |
2525 | if (bootPtr) { |
2526 | *bootPtr = NULL; |
2527 | suseGrubConfGetBoot(path, bootPtr); |
2528 | } |
2529 | |
2530 | return 0; |
2531 | } |
2532 | |
2533 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { |
2534 | FILE * in; |
2535 | char buf[1024]; |
2536 | char * chptr; |
2537 | char * start; |
2538 | char * param; |
2539 | |
2540 | in = fopen("/etc/conf.d/grub", "r"); |
2541 | if (!in) return 1; |
2542 | |
2543 | if (lbaPtr) *lbaPtr = 0; |
2544 | if (bootPtr) *bootPtr = NULL; |
2545 | |
2546 | while (fgets(buf, sizeof(buf), in)) { |
2547 | start = buf; |
2548 | while (isspace(*start)) start++; |
2549 | if (*start == '#') continue; |
2550 | |
2551 | chptr = strchr(start, '='); |
2552 | if (!chptr) continue; |
2553 | chptr--; |
2554 | while (*chptr && isspace(*chptr)) chptr--; |
2555 | chptr++; |
2556 | *chptr = '\0'; |
2557 | |
2558 | param = chptr + 1; |
2559 | while (*param && isspace(*param)) param++; |
2560 | if (*param == '=') { |
2561 | param++; |
2562 | while (*param && isspace(*param)) param++; |
2563 | } |
2564 | |
2565 | chptr = param; |
2566 | while (*chptr && !isspace(*chptr)) chptr++; |
2567 | *chptr = '\0'; |
2568 | |
2569 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
2570 | *lbaPtr = 1; |
2571 | else if (!strcmp(start, "boot") && bootPtr) |
2572 | *bootPtr = strdup(param); |
2573 | } |
2574 | |
2575 | fclose(in); |
2576 | |
2577 | return 0; |
2578 | } |
2579 | |
2580 | void dumpSysconfigGrub(void) { |
2581 | char * boot = NULL; |
2582 | int lba; |
2583 | |
2584 | if (isSuseSystem()) { |
2585 | if (parseSuseGrubConf(&lba, &boot)) { |
2586 | free(boot); |
2587 | return; |
2588 | } |
2589 | } else { |
2590 | if (parseSysconfigGrub(&lba, &boot)) { |
2591 | free(boot); |
2592 | return; |
2593 | } |
2594 | } |
2595 | |
2596 | if (lba) printf("lba\n"); |
2597 | if (boot) { |
2598 | printf("boot=%s\n", boot); |
2599 | free(boot); |
2600 | } |
2601 | } |
2602 | |
2603 | int displayInfo(struct grubConfig * config, char * kernel, |
2604 | const char * prefix) { |
2605 | int i = 0; |
2606 | struct singleEntry * entry; |
2607 | struct singleLine * line; |
2608 | |
2609 | entry = findEntryByPath(config, kernel, prefix, &i); |
2610 | if (!entry) { |
2611 | fprintf(stderr, _("grubby: kernel not found\n")); |
2612 | return 1; |
2613 | } |
2614 | |
2615 | /* this is a horrible hack to support /etc/conf.d/grub; there must |
2616 | be a better way */ |
2617 | if (config->cfi == &grubConfigType) { |
2618 | dumpSysconfigGrub(); |
2619 | } else { |
2620 | line = getLineByType(LT_BOOT, config->theLines); |
2621 | if (line && line->numElements >= 1) { |
2622 | printf("boot=%s\n", line->elements[1].item); |
2623 | } |
2624 | |
2625 | line = getLineByType(LT_LBA, config->theLines); |
2626 | if (line) printf("lba\n"); |
2627 | } |
2628 | |
2629 | displayEntry(entry, prefix, i); |
2630 | |
2631 | i++; |
2632 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
2633 | displayEntry(entry, prefix, i); |
2634 | i++; |
2635 | } |
2636 | |
2637 | return 0; |
2638 | } |
2639 | |
2640 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
2641 | struct singleLine * tmplLine, |
2642 | struct singleLine * prevLine, |
2643 | const char * val, |
2644 | struct configFileInfo * cfi) |
2645 | { |
2646 | struct singleLine * newLine = lineDup(tmplLine); |
2647 | |
2648 | if (isEfi && cfi == &grub2ConfigType) { |
2649 | enum lineType_e old = newLine->type; |
2650 | newLine->type = preferredLineType(newLine->type, cfi); |
2651 | if (old != newLine->type) |
2652 | newLine->elements[0].item = getKeyByType(newLine->type, cfi); |
2653 | } |
2654 | |
2655 | if (val) { |
2656 | /* override the inherited value with our own. |
2657 | * This is a little weak because it only applies to elements[1] |
2658 | */ |
2659 | if (newLine->numElements > 1) |
2660 | removeElement(newLine, 1); |
2661 | insertElement(newLine, val, 1, cfi); |
2662 | |
2663 | /* but try to keep the rootspec from the template... sigh */ |
2664 | if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD|LT_KERNEL_EFI|LT_INITRD_EFI)) { |
2665 | char * rootspec = getRootSpecifier(tmplLine->elements[1].item); |
2666 | if (rootspec != NULL) { |
2667 | free(newLine->elements[1].item); |
2668 | newLine->elements[1].item = |
2669 | sdupprintf("%s%s", rootspec, val); |
2670 | } |
2671 | } |
2672 | } |
2673 | |
2674 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? |
2675 | newLine->elements[0].item : ""); |
2676 | |
2677 | if (!entry->lines) { |
2678 | /* first one on the list */ |
2679 | entry->lines = newLine; |
2680 | } else if (prevLine) { |
2681 | /* add after prevLine */ |
2682 | newLine->next = prevLine->next; |
2683 | prevLine->next = newLine; |
2684 | } |
2685 | |
2686 | return newLine; |
2687 | } |
2688 | |
2689 | /* val may be NULL */ |
2690 | struct singleLine * addLine(struct singleEntry * entry, |
2691 | struct configFileInfo * cfi, |
2692 | enum lineType_e type, char * defaultIndent, |
2693 | const char * val) { |
2694 | struct singleLine * line, * prev; |
2695 | struct keywordTypes * kw; |
2696 | struct singleLine tmpl; |
2697 | |
2698 | /* NB: This function shouldn't allocate items on the heap, rather on the |
2699 | * stack since it calls addLineTmpl which will make copies. |
2700 | */ |
2701 | if (type == LT_TITLE && cfi->titleBracketed) { |
2702 | /* we're doing a bracketed title (zipl) */ |
2703 | tmpl.type = type; |
2704 | tmpl.numElements = 1; |
2705 | tmpl.elements = alloca(sizeof(*tmpl.elements)); |
2706 | tmpl.elements[0].item = alloca(strlen(val)+3); |
2707 | sprintf(tmpl.elements[0].item, "[%s]", val); |
2708 | tmpl.elements[0].indent = ""; |
2709 | val = NULL; |
2710 | } else if (type == LT_MENUENTRY) { |
2711 | char *lineend = "--class gnu-linux --class gnu --class os {"; |
2712 | if (!val) { |
2713 | fprintf(stderr, "Line type LT_MENUENTRY requires a value\n"); |
2714 | abort(); |
2715 | } |
2716 | kw = getKeywordByType(type, cfi); |
2717 | if (!kw) { |
2718 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2719 | abort(); |
2720 | } |
2721 | tmpl.indent = ""; |
2722 | tmpl.type = type; |
2723 | tmpl.numElements = 3; |
2724 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2725 | tmpl.elements[0].item = kw->key; |
2726 | tmpl.elements[0].indent = alloca(2); |
2727 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2728 | tmpl.elements[1].item = (char *)val; |
2729 | tmpl.elements[1].indent = alloca(2); |
2730 | sprintf(tmpl.elements[1].indent, "%c", kw->nextChar); |
2731 | tmpl.elements[2].item = alloca(strlen(lineend)+1); |
2732 | strcpy(tmpl.elements[2].item, lineend); |
2733 | tmpl.elements[2].indent = ""; |
2734 | } else { |
2735 | kw = getKeywordByType(type, cfi); |
2736 | if (!kw) { |
2737 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2738 | abort(); |
2739 | } |
2740 | tmpl.type = type; |
2741 | tmpl.numElements = val ? 2 : 1; |
2742 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2743 | tmpl.elements[0].item = kw->key; |
2744 | tmpl.elements[0].indent = alloca(2); |
2745 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2746 | if (val) { |
2747 | tmpl.elements[1].item = (char *)val; |
2748 | tmpl.elements[1].indent = ""; |
2749 | } |
2750 | } |
2751 | |
2752 | /* The last non-empty line gives us the indention to us and the line |
2753 | to insert after. Note that comments are considered empty lines, which |
2754 | may not be ideal? If there are no lines or we are looking at the |
2755 | first line, we use defaultIndent (the first line is normally indented |
2756 | differently from the rest) */ |
2757 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
2758 | if (line->numElements) prev = line; |
2759 | /* fall back on the last line if prev isn't otherwise set */ |
2760 | if (!line->next && !prev) prev = line; |
2761 | } |
2762 | |
2763 | struct singleLine *menuEntry; |
2764 | menuEntry = getLineByType(LT_MENUENTRY, entry->lines); |
2765 | if (tmpl.type == LT_ENTRY_END) { |
2766 | if (menuEntry) |
2767 | tmpl.indent = menuEntry->indent; |
2768 | else |
2769 | tmpl.indent = defaultIndent ?: ""; |
2770 | } else if (tmpl.type != LT_MENUENTRY) { |
2771 | if (menuEntry) |
2772 | tmpl.indent = "\t"; |
2773 | else if (prev == entry->lines) |
2774 | tmpl.indent = defaultIndent ?: ""; |
2775 | else |
2776 | tmpl.indent = prev->indent; |
2777 | } |
2778 | |
2779 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
2780 | } |
2781 | |
2782 | void removeLine(struct singleEntry * entry, struct singleLine * line) { |
2783 | struct singleLine * prev; |
2784 | int i; |
2785 | |
2786 | for (i = 0; i < line->numElements; i++) { |
2787 | free(line->elements[i].item); |
2788 | free(line->elements[i].indent); |
2789 | } |
2790 | free(line->elements); |
2791 | free(line->indent); |
2792 | |
2793 | if (line == entry->lines) { |
2794 | entry->lines = line->next; |
2795 | } else { |
2796 | prev = entry->lines; |
2797 | while (prev->next != line) prev = prev->next; |
2798 | prev->next = line->next; |
2799 | } |
2800 | |
2801 | free(line); |
2802 | } |
2803 | |
2804 | static void requote(struct singleLine *tmplLine, struct configFileInfo * cfi) |
2805 | { |
2806 | struct singleLine newLine = { |
2807 | .indent = tmplLine->indent, |
2808 | .type = tmplLine->type, |
2809 | .next = tmplLine->next, |
2810 | }; |
2811 | int firstQuotedItem = -1; |
2812 | int quoteLen = 0; |
2813 | int j; |
2814 | int element = 0; |
2815 | char *c; |
2816 | |
2817 | c = malloc(strlen(tmplLine->elements[0].item) + 1); |
2818 | strcpy(c, tmplLine->elements[0].item); |
2819 | insertElement(&newLine, c, element++, cfi); |
2820 | free(c); |
2821 | c = NULL; |
2822 | |
2823 | for (j = 1; j < tmplLine->numElements; j++) { |
2824 | if (firstQuotedItem == -1) { |
2825 | quoteLen += strlen(tmplLine->elements[j].item); |
2826 | |
2827 | if (isquote(tmplLine->elements[j].item[0])) { |
2828 | firstQuotedItem = j; |
2829 | quoteLen += strlen(tmplLine->elements[j].indent); |
2830 | } else { |
2831 | c = malloc(quoteLen + 1); |
2832 | strcpy(c, tmplLine->elements[j].item); |
2833 | insertElement(&newLine, c, element++, cfi); |
2834 | free(c); |
2835 | quoteLen = 0; |
2836 | } |
2837 | } else { |
2838 | int itemlen = strlen(tmplLine->elements[j].item); |
2839 | quoteLen += itemlen; |
2840 | quoteLen += strlen(tmplLine->elements[j].indent); |
2841 | |
2842 | if (isquote(tmplLine->elements[j].item[itemlen - 1])) { |
2843 | c = malloc(quoteLen + 1); |
2844 | c[0] = '\0'; |
2845 | for (int i = firstQuotedItem; i < j+1; i++) { |
2846 | strcat(c, tmplLine->elements[i].item); |
2847 | strcat(c, tmplLine->elements[i].indent); |
2848 | } |
2849 | insertElement(&newLine, c, element++, cfi); |
2850 | free(c); |
2851 | |
2852 | firstQuotedItem = -1; |
2853 | quoteLen = 0; |
2854 | } |
2855 | } |
2856 | } |
2857 | while (tmplLine->numElements) |
2858 | removeElement(tmplLine, 0); |
2859 | if (tmplLine->elements) |
2860 | free(tmplLine->elements); |
2861 | |
2862 | tmplLine->numElements = newLine.numElements; |
2863 | tmplLine->elements = newLine.elements; |
2864 | } |
2865 | |
2866 | static void insertElement(struct singleLine * line, |
2867 | const char * item, int insertHere, |
2868 | struct configFileInfo * cfi) |
2869 | { |
2870 | struct keywordTypes * kw; |
2871 | char indent[2] = ""; |
2872 | |
2873 | /* sanity check */ |
2874 | if (insertHere > line->numElements) { |
2875 | dbgPrintf("insertElement() adjusting insertHere from %d to %d\n", |
2876 | insertHere, line->numElements); |
2877 | insertHere = line->numElements; |
2878 | } |
2879 | |
2880 | line->elements = realloc(line->elements, (line->numElements + 1) * |
2881 | sizeof(*line->elements)); |
2882 | memmove(&line->elements[insertHere+1], |
2883 | &line->elements[insertHere], |
2884 | (line->numElements - insertHere) * |
2885 | sizeof(*line->elements)); |
2886 | line->elements[insertHere].item = strdup(item); |
2887 | |
2888 | kw = getKeywordByType(line->type, cfi); |
2889 | |
2890 | if (line->numElements == 0) { |
2891 | indent[0] = '\0'; |
2892 | } else if (insertHere == 0) { |
2893 | indent[0] = kw->nextChar; |
2894 | } else if (kw->separatorChar != '\0') { |
2895 | indent[0] = kw->separatorChar; |
2896 | } else { |
2897 | indent[0] = ' '; |
2898 | } |
2899 | |
2900 | if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') { |
2901 | /* move the end-of-line forward */ |
2902 | line->elements[insertHere].indent = |
2903 | line->elements[insertHere-1].indent; |
2904 | line->elements[insertHere-1].indent = strdup(indent); |
2905 | } else { |
2906 | line->elements[insertHere].indent = strdup(indent); |
2907 | } |
2908 | |
2909 | line->numElements++; |
2910 | |
2911 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", |
2912 | line->elements[0].item, |
2913 | line->elements[insertHere].item, |
2914 | line->elements[insertHere].indent, |
2915 | insertHere); |
2916 | } |
2917 | |
2918 | static void removeElement(struct singleLine * line, int removeHere) { |
2919 | int i; |
2920 | |
2921 | /* sanity check */ |
2922 | if (removeHere >= line->numElements) return; |
2923 | |
2924 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, |
2925 | removeHere, line->elements[removeHere].item); |
2926 | |
2927 | free(line->elements[removeHere].item); |
2928 | |
2929 | if (removeHere > 1) { |
2930 | /* previous argument gets this argument's post-indentation */ |
2931 | free(line->elements[removeHere-1].indent); |
2932 | line->elements[removeHere-1].indent = |
2933 | line->elements[removeHere].indent; |
2934 | } else { |
2935 | free(line->elements[removeHere].indent); |
2936 | } |
2937 | |
2938 | /* now collapse the array, but don't bother to realloc smaller */ |
2939 | for (i = removeHere; i < line->numElements - 1; i++) |
2940 | line->elements[i] = line->elements[i + 1]; |
2941 | |
2942 | line->numElements--; |
2943 | } |
2944 | |
2945 | int argMatch(const char * one, const char * two) { |
2946 | char * first, * second; |
2947 | char * chptr; |
2948 | |
2949 | first = strcpy(alloca(strlen(one) + 1), one); |
2950 | second = strcpy(alloca(strlen(two) + 1), two); |
2951 | |
2952 | chptr = strchr(first, '='); |
2953 | if (chptr) *chptr = '\0'; |
2954 | |
2955 | chptr = strchr(second, '='); |
2956 | if (chptr) *chptr = '\0'; |
2957 | |
2958 | return strcmp(first, second); |
2959 | } |
2960 | |
2961 | int updateActualImage(struct grubConfig * cfg, const char * image, |
2962 | const char * prefix, const char * addArgs, |
2963 | const char * removeArgs, int multibootArgs) { |
2964 | struct singleEntry * entry; |
2965 | struct singleLine * line, * rootLine; |
2966 | int index = 0; |
2967 | int i, k; |
2968 | const char ** newArgs, ** oldArgs; |
2969 | const char ** arg; |
2970 | int useKernelArgs, useRoot; |
2971 | int firstElement; |
2972 | int *usedElements; |
2973 | int doreplace; |
2974 | |
2975 | if (!image) return 0; |
2976 | |
2977 | if (!addArgs) { |
2978 | newArgs = malloc(sizeof(*newArgs)); |
2979 | *newArgs = NULL; |
2980 | } else { |
2981 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
2982 | fprintf(stderr, |
2983 | _("grubby: error separating arguments '%s'\n"), addArgs); |
2984 | return 1; |
2985 | } |
2986 | } |
2987 | |
2988 | if (!removeArgs) { |
2989 | oldArgs = malloc(sizeof(*oldArgs)); |
2990 | *oldArgs = NULL; |
2991 | } else { |
2992 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
2993 | fprintf(stderr, |
2994 | _("grubby: error separating arguments '%s'\n"), removeArgs); |
2995 | free(newArgs); |
2996 | return 1; |
2997 | } |
2998 | } |
2999 | |
3000 | |
3001 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
3002 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); |
3003 | |
3004 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
3005 | && !multibootArgs); |
3006 | |
3007 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3008 | |
3009 | if (multibootArgs && !entry->multiboot) |
3010 | continue; |
3011 | |
3012 | /* Determine where to put the args. If this config supports |
3013 | * LT_KERNELARGS, use that. Otherwise use |
3014 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. |
3015 | */ |
3016 | if (useKernelArgs) { |
3017 | line = getLineByType(LT_KERNELARGS, entry->lines); |
3018 | if (!line) { |
3019 | /* no LT_KERNELARGS, need to add it */ |
3020 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, |
3021 | cfg->secondaryIndent, NULL); |
3022 | } |
3023 | firstElement = 1; |
3024 | |
3025 | } else if (multibootArgs) { |
3026 | line = getLineByType(LT_HYPER, entry->lines); |
3027 | if (!line) { |
3028 | /* a multiboot entry without LT_HYPER? */ |
3029 | continue; |
3030 | } |
3031 | firstElement = 2; |
3032 | |
3033 | } else { |
3034 | line = getLineByType(LT_KERNEL|LT_MBMODULE|LT_KERNEL_EFI, entry->lines); |
3035 | if (!line) { |
3036 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ |
3037 | continue; |
3038 | } |
3039 | firstElement = 2; |
3040 | } |
3041 | |
3042 | /* handle the elilo case which does: |
3043 | * append="hypervisor args -- kernel args" |
3044 | */ |
3045 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { |
3046 | /* this is a multiboot entry, make sure there's |
3047 | * -- on the args line |
3048 | */ |
3049 | for (i = firstElement; i < line->numElements; i++) { |
3050 | if (!strcmp(line->elements[i].item, "--")) |
3051 | break; |
3052 | } |
3053 | if (i == line->numElements) { |
3054 | /* assume all existing args are kernel args, |
3055 | * prepend -- to make it official |
3056 | */ |
3057 | insertElement(line, "--", firstElement, cfg->cfi); |
3058 | i = firstElement; |
3059 | } |
3060 | if (!multibootArgs) { |
3061 | /* kernel args start after the -- */ |
3062 | firstElement = i + 1; |
3063 | } |
3064 | } else if (cfg->cfi->mbConcatArgs) { |
3065 | /* this is a non-multiboot entry, remove hyper args */ |
3066 | for (i = firstElement; i < line->numElements; i++) { |
3067 | if (!strcmp(line->elements[i].item, "--")) |
3068 | break; |
3069 | } |
3070 | if (i < line->numElements) { |
3071 | /* remove args up to -- */ |
3072 | while (strcmp(line->elements[firstElement].item, "--")) |
3073 | removeElement(line, firstElement); |
3074 | /* remove -- */ |
3075 | removeElement(line, firstElement); |
3076 | } |
3077 | } |
3078 | |
3079 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
3080 | |
3081 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
3082 | |
3083 | doreplace = 1; |
3084 | for (i = firstElement; i < line->numElements; i++) { |
3085 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
3086 | !strcmp(line->elements[i].item, "--")) |
3087 | { |
3088 | /* reached the end of hyper args, insert here */ |
3089 | doreplace = 0; |
3090 | break; |
3091 | } |
3092 | if (usedElements[i]) |
3093 | continue; |
3094 | if (!argMatch(line->elements[i].item, *arg)) { |
3095 | usedElements[i]=1; |
3096 | break; |
3097 | } |
3098 | } |
3099 | |
3100 | if (i < line->numElements && doreplace) { |
3101 | /* direct replacement */ |
3102 | free(line->elements[i].item); |
3103 | line->elements[i].item = strdup(*arg); |
3104 | |
3105 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
3106 | /* root= replacement */ |
3107 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3108 | if (rootLine) { |
3109 | free(rootLine->elements[1].item); |
3110 | rootLine->elements[1].item = strdup(*arg + 5); |
3111 | } else { |
3112 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, |
3113 | cfg->secondaryIndent, *arg + 5); |
3114 | } |
3115 | } |
3116 | |
3117 | else { |
3118 | /* insert/append */ |
3119 | insertElement(line, *arg, i, cfg->cfi); |
3120 | usedElements = realloc(usedElements, line->numElements * |
3121 | sizeof(*usedElements)); |
3122 | memmove(&usedElements[i + 1], &usedElements[i], |
3123 | line->numElements - i - 1); |
3124 | usedElements[i] = 1; |
3125 | |
3126 | /* if we updated a root= here even though there is a |
3127 | LT_ROOT available we need to remove the LT_ROOT entry |
3128 | (this will happen if we switch from a device to a label) */ |
3129 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
3130 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3131 | if (rootLine) |
3132 | removeLine(entry, rootLine); |
3133 | } |
3134 | } |
3135 | } |
3136 | |
3137 | free(usedElements); |
3138 | |
3139 | for (arg = oldArgs; *arg; arg++) { |
3140 | for (i = firstElement; i < line->numElements; i++) { |
3141 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
3142 | !strcmp(line->elements[i].item, "--")) |
3143 | /* reached the end of hyper args, stop here */ |
3144 | break; |
3145 | if (!argMatch(line->elements[i].item, *arg)) { |
3146 | removeElement(line, i); |
3147 | break; |
3148 | } |
3149 | } |
3150 | /* handle removing LT_ROOT line too */ |
3151 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
3152 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3153 | if (rootLine) |
3154 | removeLine(entry, rootLine); |
3155 | } |
3156 | } |
3157 | |
3158 | if (line->numElements == 1) { |
3159 | /* don't need the line at all (note it has to be a |
3160 | LT_KERNELARGS for this to happen */ |
3161 | removeLine(entry, line); |
3162 | } |
3163 | } |
3164 | |
3165 | free(newArgs); |
3166 | free(oldArgs); |
3167 | |
3168 | return 0; |
3169 | } |
3170 | |
3171 | int updateImage(struct grubConfig * cfg, const char * image, |
3172 | const char * prefix, const char * addArgs, |
3173 | const char * removeArgs, |
3174 | const char * addMBArgs, const char * removeMBArgs) { |
3175 | int rc = 0; |
3176 | |
3177 | if (!image) return rc; |
3178 | |
3179 | /* update the main args first... */ |
3180 | if (addArgs || removeArgs) |
3181 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); |
3182 | if (rc) return rc; |
3183 | |
3184 | /* and now any multiboot args */ |
3185 | if (addMBArgs || removeMBArgs) |
3186 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); |
3187 | return rc; |
3188 | } |
3189 | |
3190 | int updateInitrd(struct grubConfig * cfg, const char * image, |
3191 | const char * prefix, const char * initrd) { |
3192 | struct singleEntry * entry; |
3193 | struct singleLine * line, * kernelLine, *endLine = NULL; |
3194 | int index = 0; |
3195 | |
3196 | if (!image) return 0; |
3197 | |
3198 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3199 | kernelLine = getLineByType(LT_KERNEL|LT_KERNEL_EFI, entry->lines); |
3200 | if (!kernelLine) continue; |
3201 | |
3202 | line = getLineByType(LT_INITRD|LT_INITRD_EFI, entry->lines); |
3203 | if (line) |
3204 | removeLine(entry, line); |
3205 | if (prefix) { |
3206 | int prefixLen = strlen(prefix); |
3207 | if (!strncmp(initrd, prefix, prefixLen)) |
3208 | initrd += prefixLen; |
3209 | } |
3210 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
3211 | if (endLine) |
3212 | removeLine(entry, endLine); |
3213 | line = addLine(entry, cfg->cfi, preferredLineType(LT_INITRD, cfg->cfi), |
3214 | kernelLine->indent, initrd); |
3215 | if (!line) |
3216 | return 1; |
3217 | if (endLine) { |
3218 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
3219 | if (!line) |
3220 | return 1; |
3221 | } |
3222 | |
3223 | break; |
3224 | } |
3225 | |
3226 | return 0; |
3227 | } |
3228 | |
3229 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { |
3230 | int fd; |
3231 | unsigned char bootSect[512]; |
3232 | int offset; |
3233 | |
3234 | fd = open(device, O_RDONLY); |
3235 | if (fd < 0) { |
3236 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3237 | device, strerror(errno)); |
3238 | return 1; |
3239 | } |
3240 | |
3241 | if (read(fd, bootSect, 512) != 512) { |
3242 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3243 | device, strerror(errno)); |
3244 | return 1; |
3245 | } |
3246 | close(fd); |
3247 | |
3248 | /* first three bytes should match, a jmp short should be in there */ |
3249 | if (memcmp(boot, bootSect, 3)) |
3250 | return 0; |
3251 | |
3252 | if (boot[1] == JMP_SHORT_OPCODE) { |
3253 | offset = boot[2] + 2; |
3254 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
3255 | offset = (boot[3] << 8) + boot[2] + 2; |
3256 | } else if (boot[0] == JMP_SHORT_OPCODE) { |
3257 | offset = boot[1] + 2; |
3258 | /* |
3259 | * it looks like grub, when copying stage1 into the mbr, patches stage1 |
3260 | * right after the JMP location, replacing other instructions such as |
3261 | * JMPs for NOOPs. So, relax the check a little bit by skipping those |
3262 | * different bytes. |
3263 | */ |
3264 | if ((bootSect[offset + 1] == NOOP_OPCODE) |
3265 | && (bootSect[offset + 2] == NOOP_OPCODE)) { |
3266 | offset = offset + 3; |
3267 | } |
3268 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
3269 | offset = (boot[2] << 8) + boot[1] + 2; |
3270 | } else { |
3271 | return 0; |
3272 | } |
3273 | |
3274 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
3275 | return 0; |
3276 | |
3277 | return 2; |
3278 | } |
3279 | |
3280 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { |
3281 | int fd; |
3282 | char buf[65536]; |
3283 | char * end; |
3284 | char * chptr; |
3285 | char * chptr2; |
3286 | int rc; |
3287 | |
3288 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
3289 | *raw* devices listed in there */ |
3290 | |
3291 | if (!strncmp(mdDev, "/dev/", 5)) |
3292 | mdDev += 5; |
3293 | |
3294 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
3295 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
3296 | strerror(errno)); |
3297 | return 2; |
3298 | } |
3299 | |
3300 | rc = read(fd, buf, sizeof(buf) - 1); |
3301 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
3302 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
3303 | strerror(errno)); |
3304 | close(fd); |
3305 | return 2; |
3306 | } |
3307 | close(fd); |
3308 | buf[rc] = '\0'; |
3309 | |
3310 | chptr = buf; |
3311 | while (*chptr) { |
3312 | end = strchr(chptr, '\n'); |
3313 | if (!end) break; |
3314 | *end = '\0'; |
3315 | |
3316 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
3317 | chptr[strlen(mdDev)] == ' ') { |
3318 | |
3319 | /* found the device */ |
3320 | while (*chptr && *chptr != ':') chptr++; |
3321 | chptr++; |
3322 | while (*chptr && isspace(*chptr)) chptr++; |
3323 | |
3324 | /* skip the "active" bit */ |
3325 | while (*chptr && !isspace(*chptr)) chptr++; |
3326 | while (*chptr && isspace(*chptr)) chptr++; |
3327 | |
3328 | /* skip the raid level */ |
3329 | while (*chptr && !isspace(*chptr)) chptr++; |
3330 | while (*chptr && isspace(*chptr)) chptr++; |
3331 | |
3332 | /* everything else is partition stuff */ |
3333 | while (*chptr) { |
3334 | chptr2 = chptr; |
3335 | while (*chptr2 && *chptr2 != '[') chptr2++; |
3336 | if (!*chptr2) break; |
3337 | |
3338 | /* yank off the numbers at the end */ |
3339 | chptr2--; |
3340 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; |
3341 | chptr2++; |
3342 | *chptr2 = '\0'; |
3343 | |
3344 | /* Better, now we need the /dev/ back. We're done with |
3345 | * everything before this point, so we can just put |
3346 | * the /dev/ part there. There will always be room. */ |
3347 | memcpy(chptr - 5, "/dev/", 5); |
3348 | rc = checkDeviceBootloader(chptr - 5, boot); |
3349 | if (rc != 2) { |
3350 | return rc; |
3351 | } |
3352 | |
3353 | chptr = chptr2 + 1; |
3354 | /* skip the [11] bit */ |
3355 | while (*chptr && !isspace(*chptr)) chptr++; |
3356 | /* and move to the next one */ |
3357 | while (*chptr && isspace(*chptr)) chptr++; |
3358 | } |
3359 | |
3360 | /* we're good to go */ |
3361 | return 2; |
3362 | } |
3363 | |
3364 | chptr = end + 1; |
3365 | } |
3366 | |
3367 | fprintf(stderr, |
3368 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
3369 | mdDev); |
3370 | return 0; |
3371 | } |
3372 | |
3373 | int checkForLilo(struct grubConfig * config) { |
3374 | int fd; |
3375 | unsigned char boot[512]; |
3376 | struct singleLine * line; |
3377 | |
3378 | for (line = config->theLines; line; line = line->next) |
3379 | if (line->type == LT_BOOT) break; |
3380 | |
3381 | if (!line) { |
3382 | fprintf(stderr, |
3383 | _("grubby: no boot line found in lilo configuration\n")); |
3384 | return 1; |
3385 | } |
3386 | |
3387 | if (line->numElements != 2) return 1; |
3388 | |
3389 | fd = open("/boot/boot.b", O_RDONLY); |
3390 | if (fd < 0) { |
3391 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3392 | "/boot/boot.b", strerror(errno)); |
3393 | return 1; |
3394 | } |
3395 | |
3396 | if (read(fd, boot, 512) != 512) { |
3397 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3398 | "/boot/boot.b", strerror(errno)); |
3399 | return 1; |
3400 | } |
3401 | close(fd); |
3402 | |
3403 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
3404 | return checkLiloOnRaid(line->elements[1].item, boot); |
3405 | |
3406 | return checkDeviceBootloader(line->elements[1].item, boot); |
3407 | } |
3408 | |
3409 | int checkForGrub2(struct grubConfig * config) { |
3410 | if (!access("/etc/grub.d/", R_OK)) |
3411 | return 2; |
3412 | |
3413 | return 1; |
3414 | } |
3415 | |
3416 | int checkForGrub(struct grubConfig * config) { |
3417 | int fd; |
3418 | unsigned char bootSect[512]; |
3419 | char * boot; |
3420 | int onSuse = isSuseSystem(); |
3421 | |
3422 | |
3423 | if (onSuse) { |
3424 | if (parseSuseGrubConf(NULL, &boot)) |
3425 | return 0; |
3426 | } else { |
3427 | if (parseSysconfigGrub(NULL, &boot)) |
3428 | return 0; |
3429 | } |
3430 | |
3431 | /* assume grub is not installed -- not an error condition */ |
3432 | if (!boot) |
3433 | return 0; |
3434 | |
3435 | fd = open("/boot/grub/stage1", O_RDONLY); |
3436 | if (fd < 0) |
3437 | /* this doesn't exist if grub hasn't been installed */ |
3438 | return 0; |
3439 | |
3440 | if (read(fd, bootSect, 512) != 512) { |
3441 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3442 | "/boot/grub/stage1", strerror(errno)); |
3443 | close(fd); |
3444 | return 1; |
3445 | } |
3446 | close(fd); |
3447 | |
3448 | /* The more elaborate checks do not work on SuSE. The checks done |
3449 | * seem to be reasonble (at least for now), so just return success |
3450 | */ |
3451 | if (onSuse) |
3452 | return 2; |
3453 | |
3454 | return checkDeviceBootloader(boot, bootSect); |
3455 | } |
3456 | |
3457 | int checkForExtLinux(struct grubConfig * config) { |
3458 | int fd; |
3459 | unsigned char bootSect[512]; |
3460 | char * boot; |
3461 | char executable[] = "/boot/extlinux/extlinux"; |
3462 | |
3463 | printf("entered: checkForExtLinux()\n"); |
3464 | |
3465 | if (parseSysconfigGrub(NULL, &boot)) |
3466 | return 0; |
3467 | |
3468 | /* assume grub is not installed -- not an error condition */ |
3469 | if (!boot) |
3470 | return 0; |
3471 | |
3472 | fd = open(executable, O_RDONLY); |
3473 | if (fd < 0) |
3474 | /* this doesn't exist if grub hasn't been installed */ |
3475 | return 0; |
3476 | |
3477 | if (read(fd, bootSect, 512) != 512) { |
3478 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3479 | executable, strerror(errno)); |
3480 | return 1; |
3481 | } |
3482 | close(fd); |
3483 | |
3484 | return checkDeviceBootloader(boot, bootSect); |
3485 | } |
3486 | |
3487 | int checkForYaboot(struct grubConfig * config) { |
3488 | /* |
3489 | * This is a simplistic check that we consider good enough for own puporses |
3490 | * |
3491 | * If we were to properly check if yaboot is *installed* we'd need to: |
3492 | * 1) get the system boot device (LT_BOOT) |
3493 | * 2) considering it's a raw filesystem, check if the yaboot binary matches |
3494 | * the content on the boot device |
3495 | * 3) if not, copy the binary to a temporary file and run "addnote" on it |
3496 | * 4) check again if binary and boot device contents match |
3497 | */ |
3498 | if (!access("/etc/yaboot.conf", R_OK)) |
3499 | return 2; |
3500 | |
3501 | return 1; |
3502 | } |
3503 | |
3504 | int checkForElilo(struct grubConfig * config) { |
3505 | if (!access("/etc/elilo.conf", R_OK)) |
3506 | return 2; |
3507 | |
3508 | return 1; |
3509 | } |
3510 | |
3511 | static char * getRootSpecifier(char * str) { |
3512 | char * idx, * rootspec = NULL; |
3513 | |
3514 | if (*str == '(') { |
3515 | idx = rootspec = strdup(str); |
3516 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; |
3517 | *(++idx) = '\0'; |
3518 | } |
3519 | return rootspec; |
3520 | } |
3521 | |
3522 | static char * getInitrdVal(struct grubConfig * config, |
3523 | const char * prefix, struct singleLine *tmplLine, |
3524 | const char * newKernelInitrd, |
3525 | const char ** extraInitrds, int extraInitrdCount) |
3526 | { |
3527 | char *initrdVal, *end; |
3528 | int i; |
3529 | size_t totalSize; |
3530 | size_t prefixLen; |
3531 | char separatorChar; |
3532 | |
3533 | prefixLen = strlen(prefix); |
3534 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */; |
3535 | |
3536 | for (i = 0; i < extraInitrdCount; i++) { |
3537 | totalSize += sizeof(separatorChar); |
3538 | totalSize += strlen(extraInitrds[i]) - prefixLen; |
3539 | } |
3540 | |
3541 | initrdVal = end = malloc(totalSize); |
3542 | |
3543 | end = stpcpy (end, newKernelInitrd + prefixLen); |
3544 | |
3545 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; |
3546 | for (i = 0; i < extraInitrdCount; i++) { |
3547 | const char *extraInitrd; |
3548 | int j; |
3549 | |
3550 | extraInitrd = extraInitrds[i] + prefixLen; |
3551 | /* Don't add entries that are already there */ |
3552 | if (tmplLine != NULL) { |
3553 | for (j = 2; j < tmplLine->numElements; j++) |
3554 | if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0) |
3555 | break; |
3556 | |
3557 | if (j != tmplLine->numElements) |
3558 | continue; |
3559 | } |
3560 | |
3561 | *end++ = separatorChar; |
3562 | end = stpcpy(end, extraInitrd); |
3563 | } |
3564 | |
3565 | return initrdVal; |
3566 | } |
3567 | |
3568 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, |
3569 | const char * prefix, |
3570 | const char * newKernelPath, const char * newKernelTitle, |
3571 | const char * newKernelArgs, const char * newKernelInitrd, |
3572 | const char ** extraInitrds, int extraInitrdCount, |
3573 | const char * newMBKernel, const char * newMBKernelArgs) { |
3574 | struct singleEntry * new; |
3575 | struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL; |
3576 | int needs; |
3577 | char * chptr; |
3578 | |
3579 | if (!newKernelPath) return 0; |
3580 | |
3581 | /* if the newKernelTitle is too long silently munge it into something |
3582 | * we can live with. truncating is first check, then we'll just mess with |
3583 | * it until it looks better */ |
3584 | if (config->cfi->maxTitleLength && |
3585 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
3586 | char * buf = alloca(config->cfi->maxTitleLength + 7); |
3587 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); |
3588 | int i = 1; |
3589 | |
3590 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); |
3591 | while (findEntryByPath(config, buf, NULL, NULL)) { |
3592 | sprintf(numBuf, "%d", i++); |
3593 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
3594 | } |
3595 | |
3596 | newKernelTitle = buf + 6; |
3597 | } |
3598 | |
3599 | new = malloc(sizeof(*new)); |
3600 | new->skip = 0; |
3601 | new->multiboot = 0; |
3602 | new->next = config->entries; |
3603 | new->lines = NULL; |
3604 | config->entries = new; |
3605 | |
3606 | /* copy/update from the template */ |
3607 | needs = NEED_KERNEL | NEED_TITLE; |
3608 | if (newKernelInitrd) |
3609 | needs |= NEED_INITRD; |
3610 | if (newMBKernel) { |
3611 | needs |= NEED_MB; |
3612 | new->multiboot = 1; |
3613 | } |
3614 | |
3615 | if (template) { |
3616 | for (masterLine = template->lines; |
3617 | masterLine && (tmplLine = lineDup(masterLine)); |
3618 | lineFree(tmplLine), masterLine = masterLine->next) |
3619 | { |
3620 | dbgPrintf("addNewKernel processing %d\n", tmplLine->type); |
3621 | |
3622 | /* skip comments */ |
3623 | chptr = tmplLine->indent; |
3624 | while (*chptr && isspace(*chptr)) chptr++; |
3625 | if (*chptr == '#') continue; |
3626 | |
3627 | if (iskernel(tmplLine->type) && tmplLine->numElements >= 2) { |
3628 | if (!template->multiboot && (needs & NEED_MB)) { |
3629 | /* it's not a multiboot template and this is the kernel |
3630 | * line. Try to be intelligent about inserting the |
3631 | * hypervisor at the same time. |
3632 | */ |
3633 | if (config->cfi->mbHyperFirst) { |
3634 | /* insert the hypervisor first */ |
3635 | newLine = addLine(new, config->cfi, LT_HYPER, |
3636 | tmplLine->indent, |
3637 | newMBKernel + strlen(prefix)); |
3638 | /* set up for adding the kernel line */ |
3639 | free(tmplLine->indent); |
3640 | tmplLine->indent = strdup(config->secondaryIndent); |
3641 | needs &= ~NEED_MB; |
3642 | } |
3643 | if (needs & NEED_KERNEL) { |
3644 | /* use addLineTmpl to preserve line elements, |
3645 | * otherwise we could just call addLine. Unfortunately |
3646 | * this means making some changes to the template |
3647 | * such as the indent change above and the type |
3648 | * change below. |
3649 | */ |
3650 | struct keywordTypes * mbm_kw = |
3651 | getKeywordByType(LT_MBMODULE, config->cfi); |
3652 | if (mbm_kw) { |
3653 | tmplLine->type = LT_MBMODULE; |
3654 | free(tmplLine->elements[0].item); |
3655 | tmplLine->elements[0].item = strdup(mbm_kw->key); |
3656 | } |
3657 | newLine = addLineTmpl(new, tmplLine, newLine, |
3658 | newKernelPath + strlen(prefix), config->cfi); |
3659 | needs &= ~NEED_KERNEL; |
3660 | } |
3661 | if (needs & NEED_MB) { /* !mbHyperFirst */ |
3662 | newLine = addLine(new, config->cfi, LT_HYPER, |
3663 | config->secondaryIndent, |
3664 | newMBKernel + strlen(prefix)); |
3665 | needs &= ~NEED_MB; |
3666 | } |
3667 | } else if (needs & NEED_KERNEL) { |
3668 | newLine = addLineTmpl(new, tmplLine, newLine, |
3669 | newKernelPath + strlen(prefix), config->cfi); |
3670 | needs &= ~NEED_KERNEL; |
3671 | } |
3672 | |
3673 | } else if (tmplLine->type == LT_HYPER && |
3674 | tmplLine->numElements >= 2) { |
3675 | if (needs & NEED_MB) { |
3676 | newLine = addLineTmpl(new, tmplLine, newLine, |
3677 | newMBKernel + strlen(prefix), config->cfi); |
3678 | needs &= ~NEED_MB; |
3679 | } |
3680 | |
3681 | } else if (tmplLine->type == LT_MBMODULE && |
3682 | tmplLine->numElements >= 2) { |
3683 | if (new->multiboot) { |
3684 | if (needs & NEED_KERNEL) { |
3685 | newLine = addLineTmpl(new, tmplLine, newLine, |
3686 | newKernelPath + |
3687 | strlen(prefix), config->cfi); |
3688 | needs &= ~NEED_KERNEL; |
3689 | } else if (config->cfi->mbInitRdIsModule && |
3690 | (needs & NEED_INITRD)) { |
3691 | char *initrdVal; |
3692 | initrdVal = getInitrdVal(config, prefix, tmplLine, |
3693 | newKernelInitrd, extraInitrds, |
3694 | extraInitrdCount); |
3695 | newLine = addLineTmpl(new, tmplLine, newLine, |
3696 | initrdVal, config->cfi); |
3697 | free(initrdVal); |
3698 | needs &= ~NEED_INITRD; |
3699 | } |
3700 | } else if (needs & NEED_KERNEL) { |
3701 | /* template is multi but new is not, |
3702 | * insert the kernel in the first module slot |
3703 | */ |
3704 | tmplLine->type = preferredLineType(LT_KERNEL, config->cfi); |
3705 | free(tmplLine->elements[0].item); |
3706 | tmplLine->elements[0].item = |
3707 | strdup(getKeywordByType(tmplLine->type, |
3708 | config->cfi)->key); |
3709 | newLine = addLineTmpl(new, tmplLine, newLine, |
3710 | newKernelPath + strlen(prefix), |
3711 | config->cfi); |
3712 | needs &= ~NEED_KERNEL; |
3713 | } else if (needs & NEED_INITRD) { |
3714 | char *initrdVal; |
3715 | /* template is multi but new is not, |
3716 | * insert the initrd in the second module slot |
3717 | */ |
3718 | tmplLine->type = preferredLineType(LT_INITRD, config->cfi); |
3719 | free(tmplLine->elements[0].item); |
3720 | tmplLine->elements[0].item = |
3721 | strdup(getKeywordByType(tmplLine->type, |
3722 | config->cfi)->key); |
3723 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3724 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3725 | free(initrdVal); |
3726 | needs &= ~NEED_INITRD; |
3727 | } |
3728 | |
3729 | } else if (isinitrd(tmplLine->type) && tmplLine->numElements >= 2) { |
3730 | if (needs & NEED_INITRD && |
3731 | new->multiboot && !template->multiboot && |
3732 | config->cfi->mbInitRdIsModule) { |
3733 | /* make sure we don't insert the module initrd |
3734 | * before the module kernel... if we don't do it here, |
3735 | * it will be inserted following the template. |
3736 | */ |
3737 | if (!needs & NEED_KERNEL) { |
3738 | char *initrdVal; |
3739 | |
3740 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3741 | newLine = addLine(new, config->cfi, LT_MBMODULE, |
3742 | config->secondaryIndent, |
3743 | initrdVal); |
3744 | free(initrdVal); |
3745 | needs &= ~NEED_INITRD; |
3746 | } |
3747 | } else if (needs & NEED_INITRD) { |
3748 | char *initrdVal; |
3749 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3750 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3751 | free(initrdVal); |
3752 | needs &= ~NEED_INITRD; |
3753 | } |
3754 | |
3755 | } else if (tmplLine->type == LT_MENUENTRY && |
3756 | (needs & NEED_TITLE)) { |
3757 | requote(tmplLine, config->cfi); |
3758 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3759 | strcpy(nkt, "'"); |
3760 | strcat(nkt, newKernelTitle); |
3761 | strcat(nkt, "'"); |
3762 | newLine = addLineTmpl(new, tmplLine, newLine, nkt, config->cfi); |
3763 | free(nkt); |
3764 | needs &= ~NEED_TITLE; |
3765 | } else if (tmplLine->type == LT_TITLE && |
3766 | (needs & NEED_TITLE)) { |
3767 | if (tmplLine->numElements >= 2) { |
3768 | newLine = addLineTmpl(new, tmplLine, newLine, |
3769 | newKernelTitle, config->cfi); |
3770 | needs &= ~NEED_TITLE; |
3771 | } else if (tmplLine->numElements == 1 && |
3772 | config->cfi->titleBracketed) { |
3773 | /* addLineTmpl doesn't handle titleBracketed */ |
3774 | newLine = addLine(new, config->cfi, LT_TITLE, |
3775 | tmplLine->indent, newKernelTitle); |
3776 | needs &= ~NEED_TITLE; |
3777 | } |
3778 | } else if (tmplLine->type == LT_ECHO) { |
3779 | requote(tmplLine, config->cfi); |
3780 | static const char *prefix = "'Loading "; |
3781 | if (tmplLine->numElements > 1 && |
3782 | strstr(tmplLine->elements[1].item, prefix) && |
3783 | masterLine->next && |
3784 | iskernel(masterLine->next->type)) { |
3785 | char *newTitle = malloc(strlen(prefix) + |
3786 | strlen(newKernelTitle) + 2); |
3787 | |
3788 | strcpy(newTitle, prefix); |
3789 | strcat(newTitle, newKernelTitle); |
3790 | strcat(newTitle, "'"); |
3791 | newLine = addLine(new, config->cfi, LT_ECHO, |
3792 | tmplLine->indent, newTitle); |
3793 | free(newTitle); |
3794 | } else { |
3795 | /* pass through other lines from the template */ |
3796 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, |
3797 | config->cfi); |
3798 | } |
3799 | } else { |
3800 | /* pass through other lines from the template */ |
3801 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); |
3802 | } |
3803 | } |
3804 | |
3805 | } else { |
3806 | /* don't have a template, so start the entry with the |
3807 | * appropriate starting line |
3808 | */ |
3809 | switch (config->cfi->entryStart) { |
3810 | case LT_KERNEL: |
3811 | case LT_KERNEL_EFI: |
3812 | if (new->multiboot && config->cfi->mbHyperFirst) { |
3813 | /* fall through to LT_HYPER */ |
3814 | } else { |
3815 | newLine = addLine(new, config->cfi, |
3816 | preferredLineType(LT_KERNEL, config->cfi), |
3817 | config->primaryIndent, |
3818 | newKernelPath + strlen(prefix)); |
3819 | needs &= ~NEED_KERNEL; |
3820 | break; |
3821 | } |
3822 | |
3823 | case LT_HYPER: |
3824 | newLine = addLine(new, config->cfi, LT_HYPER, |
3825 | config->primaryIndent, |
3826 | newMBKernel + strlen(prefix)); |
3827 | needs &= ~NEED_MB; |
3828 | break; |
3829 | |
3830 | case LT_MENUENTRY: { |
3831 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3832 | strcpy(nkt, "'"); |
3833 | strcat(nkt, newKernelTitle); |
3834 | strcat(nkt, "'"); |
3835 | newLine = addLine(new, config->cfi, LT_MENUENTRY, |
3836 | config->primaryIndent, nkt); |
3837 | free(nkt); |
3838 | needs &= ~NEED_TITLE; |
3839 | needs |= NEED_END; |
3840 | break; |
3841 | } |
3842 | case LT_TITLE: |
3843 | if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above) |
3844 | char * templabel; |
3845 | int x = 0, y = 0; |
3846 | |
3847 | templabel = strdup(newKernelTitle); |
3848 | while( templabel[x]){ |
3849 | if( templabel[x] == ' ' ){ |
3850 | y = x; |
3851 | while( templabel[y] ){ |
3852 | templabel[y] = templabel[y+1]; |
3853 | y++; |
3854 | } |
3855 | } |
3856 | x++; |
3857 | } |
3858 | newLine = addLine(new, config->cfi, LT_TITLE, |
3859 | config->primaryIndent, templabel); |
3860 | free(templabel); |
3861 | }else{ |
3862 | newLine = addLine(new, config->cfi, LT_TITLE, |
3863 | config->primaryIndent, newKernelTitle); |
3864 | } |
3865 | needs &= ~NEED_TITLE; |
3866 | break; |
3867 | |
3868 | default: |
3869 | abort(); |
3870 | } |
3871 | } |
3872 | |
3873 | /* add the remainder of the lines, i.e. those that either |
3874 | * weren't present in the template, or in the case of no template, |
3875 | * all the lines following the entryStart. |
3876 | */ |
3877 | if (needs & NEED_TITLE) { |
3878 | newLine = addLine(new, config->cfi, LT_TITLE, |
3879 | config->secondaryIndent, |
3880 | newKernelTitle); |
3881 | needs &= ~NEED_TITLE; |
3882 | } |
3883 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
3884 | newLine = addLine(new, config->cfi, LT_HYPER, |
3885 | config->secondaryIndent, |
3886 | newMBKernel + strlen(prefix)); |
3887 | needs &= ~NEED_MB; |
3888 | } |
3889 | if (needs & NEED_KERNEL) { |
3890 | newLine = addLine(new, config->cfi, |
3891 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3892 | config->cfi)) |
3893 | ? LT_MBMODULE |
3894 | : preferredLineType(LT_KERNEL, config->cfi), |
3895 | config->secondaryIndent, |
3896 | newKernelPath + strlen(prefix)); |
3897 | needs &= ~NEED_KERNEL; |
3898 | } |
3899 | if (needs & NEED_MB) { |
3900 | newLine = addLine(new, config->cfi, LT_HYPER, |
3901 | config->secondaryIndent, |
3902 | newMBKernel + strlen(prefix)); |
3903 | needs &= ~NEED_MB; |
3904 | } |
3905 | if (needs & NEED_INITRD) { |
3906 | char *initrdVal; |
3907 | initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount); |
3908 | newLine = addLine(new, config->cfi, |
3909 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3910 | config->cfi)) |
3911 | ? LT_MBMODULE |
3912 | : preferredLineType(LT_INITRD, config->cfi), |
3913 | config->secondaryIndent, |
3914 | initrdVal); |
3915 | free(initrdVal); |
3916 | needs &= ~NEED_INITRD; |
3917 | } |
3918 | if (needs & NEED_END) { |
3919 | newLine = addLine(new, config->cfi, LT_ENTRY_END, |
3920 | config->secondaryIndent, NULL); |
3921 | needs &= ~NEED_END; |
3922 | } |
3923 | |
3924 | if (needs) { |
3925 | printf(_("grubby: needs=%d, aborting\n"), needs); |
3926 | abort(); |
3927 | } |
3928 | |
3929 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, |
3930 | newMBKernelArgs, NULL)) return 1; |
3931 | |
3932 | return 0; |
3933 | } |
3934 | |
3935 | static void traceback(int signum) |
3936 | { |
3937 | void *array[40]; |
3938 | size_t size; |
3939 | |
3940 | signal(SIGSEGV, SIG_DFL); |
3941 | memset(array, '\0', sizeof (array)); |
3942 | size = backtrace(array, 40); |
3943 | |
3944 | fprintf(stderr, "grubby received SIGSEGV! Backtrace (%ld):\n", |
3945 | (unsigned long)size); |
3946 | backtrace_symbols_fd(array, size, STDERR_FILENO); |
3947 | exit(1); |
3948 | } |
3949 | |
3950 | int main(int argc, const char ** argv) { |
3951 | poptContext optCon; |
3952 | const char * grubConfig = NULL; |
3953 | char * outputFile = NULL; |
3954 | int arg = 0; |
3955 | int flags = 0; |
3956 | int badImageOkay = 0; |
3957 | int configureGrub2 = 0; |
3958 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
3959 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
3960 | int configureExtLinux = 0; |
3961 | int bootloaderProbe = 0; |
3962 | int extraInitrdCount = 0; |
3963 | char * updateKernelPath = NULL; |
3964 | char * newKernelPath = NULL; |
3965 | char * removeKernelPath = NULL; |
3966 | char * newKernelArgs = NULL; |
3967 | char * newKernelInitrd = NULL; |
3968 | char * newKernelTitle = NULL; |
3969 | char * newKernelVersion = NULL; |
3970 | char * newMBKernel = NULL; |
3971 | char * newMBKernelArgs = NULL; |
3972 | char * removeMBKernelArgs = NULL; |
3973 | char * removeMBKernel = NULL; |
3974 | char * bootPrefix = NULL; |
3975 | char * defaultKernel = NULL; |
3976 | char * removeArgs = NULL; |
3977 | char * kernelInfo = NULL; |
3978 | char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
3979 | char * envPath = NULL; |
3980 | const char * chptr = NULL; |
3981 | struct configFileInfo * cfi = NULL; |
3982 | struct grubConfig * config; |
3983 | struct singleEntry * template = NULL; |
3984 | int copyDefault = 0, makeDefault = 0; |
3985 | int displayDefault = 0; |
3986 | int displayDefaultIndex = 0; |
3987 | int displayDefaultTitle = 0; |
3988 | int defaultIndex = -1; |
3989 | struct poptOption options[] = { |
3990 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
3991 | _("add an entry for the specified kernel"), _("kernel-path") }, |
3992 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
3993 | _("add an entry for the specified multiboot kernel"), NULL }, |
3994 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
3995 | _("default arguments for the new kernel or new arguments for " |
3996 | "kernel being updated"), _("args") }, |
3997 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
3998 | _("default arguments for the new multiboot kernel or " |
3999 | "new arguments for multiboot kernel being updated"), NULL }, |
4000 | { "bad-image-okay", 0, 0, &badImageOkay, 0, |
4001 | _("don't sanity check images in boot entries (for testing only)"), |
4002 | NULL }, |
4003 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
4004 | _("filestystem which contains /boot directory (for testing only)"), |
4005 | _("bootfs") }, |
4006 | #if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__) |
4007 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
4008 | _("check which bootloader is installed on boot sector") }, |
4009 | #endif |
4010 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
4011 | _("path to grub config file to update (\"-\" for stdin)"), |
4012 | _("path") }, |
4013 | { "copy-default", 0, 0, ©Default, 0, |
4014 | _("use the default boot entry as a template for the new entry " |
4015 | "being added; if the default is not a linux image, or if " |
4016 | "the kernel referenced by the default image does not exist, " |
4017 | "the first linux entry whose kernel does exist is used as the " |
4018 | "template"), NULL }, |
4019 | { "debug", 0, 0, &debug, 0, |
4020 | _("print debugging information for failures") }, |
4021 | { "default-kernel", 0, 0, &displayDefault, 0, |
4022 | _("display the path of the default kernel") }, |
4023 | { "default-index", 0, 0, &displayDefaultIndex, 0, |
4024 | _("display the index of the default kernel") }, |
4025 | { "default-title", 0, 0, &displayDefaultTitle, 0, |
4026 | _("display the title of the default kernel") }, |
4027 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
4028 | _("configure elilo bootloader") }, |
4029 | { "efi", 0, POPT_ARG_NONE, &isEfi, 0, |
4030 | _("force grub2 stanzas to use efi") }, |
4031 | { "env", 0, POPT_ARG_STRING, &envPath, 0, |
4032 | _("path for environment data"), |
4033 | _("path") }, |
4034 | { "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
4035 | _("configure extlinux bootloader (from syslinux)") }, |
4036 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
4037 | _("configure grub bootloader") }, |
4038 | { "grub2", 0, POPT_ARG_NONE, &configureGrub2, 0, |
4039 | _("configure grub2 bootloader") }, |
4040 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
4041 | _("display boot information for specified kernel"), |
4042 | _("kernel-path") }, |
4043 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
4044 | _("initrd image for the new kernel"), _("initrd-path") }, |
4045 | { "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
4046 | _("auxiliary initrd image for things other than the new kernel"), _("initrd-path") }, |
4047 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
4048 | _("configure lilo bootloader") }, |
4049 | { "make-default", 0, 0, &makeDefault, 0, |
4050 | _("make the newly added entry the default boot entry"), NULL }, |
4051 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
4052 | _("path to output updated config file (\"-\" for stdout)"), |
4053 | _("path") }, |
4054 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
4055 | _("remove kernel arguments"), NULL }, |
4056 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
4057 | _("remove multiboot kernel arguments"), NULL }, |
4058 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
4059 | _("remove all entries for the specified kernel"), |
4060 | _("kernel-path") }, |
4061 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
4062 | _("remove all entries for the specified multiboot kernel"), NULL }, |
4063 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
4064 | _("make the first entry referencing the specified kernel " |
4065 | "the default"), _("kernel-path") }, |
4066 | { "set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0, |
4067 | _("make the given entry index the default entry"), |
4068 | _("entry-index") }, |
4069 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
4070 | _("configure silo bootloader") }, |
4071 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
4072 | _("title to use for the new kernel entry"), _("entry-title") }, |
4073 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
4074 | _("updated information for the specified kernel"), |
4075 | _("kernel-path") }, |
4076 | { "version", 'v', 0, NULL, 'v', |
4077 | _("print the version of this program and exit"), NULL }, |
4078 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
4079 | _("configure yaboot bootloader") }, |
4080 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
4081 | _("configure zipl bootloader") }, |
4082 | POPT_AUTOHELP |
4083 | { 0, 0, 0, 0, 0 } |
4084 | }; |
4085 | |
4086 | useextlinuxmenu=0; |
4087 | |
4088 | signal(SIGSEGV, traceback); |
4089 | |
4090 | int i = 0; |
4091 | for (int j = 1; j < argc; j++) |
4092 | i += strlen(argv[j]) + 1; |
4093 | saved_command_line = malloc(i); |
4094 | if (!saved_command_line) { |
4095 | fprintf(stderr, "grubby: %m\n"); |
4096 | exit(1); |
4097 | } |
4098 | saved_command_line[0] = '\0'; |
4099 | for (int j = 1; j < argc; j++) { |
4100 | strcat(saved_command_line, argv[j]); |
4101 | strncat(saved_command_line, j == argc -1 ? "" : " ", 1); |
4102 | } |
4103 | |
4104 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
4105 | poptReadDefaultConfig(optCon, 1); |
4106 | |
4107 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
4108 | switch (arg) { |
4109 | case 'v': |
4110 | printf("grubby version %s\n", VERSION); |
4111 | exit(0); |
4112 | break; |
4113 | case 'i': |
4114 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { |
4115 | extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon)); |
4116 | } else { |
4117 | fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount); |
4118 | return 1; |
4119 | } |
4120 | break; |
4121 | } |
4122 | } |
4123 | |
4124 | if (arg < -1) { |
4125 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
4126 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
4127 | poptStrerror(arg)); |
4128 | return 1; |
4129 | } |
4130 | |
4131 | if ((chptr = poptGetArg(optCon))) { |
4132 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
4133 | return 1; |
4134 | } |
4135 | |
4136 | if ((configureLilo + configureGrub2 + configureGrub + configureELilo + |
4137 | configureYaboot + configureSilo + configureZipl + |
4138 | configureExtLinux ) > 1) { |
4139 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); |
4140 | return 1; |
4141 | } else if (bootloaderProbe && grubConfig) { |
4142 | fprintf(stderr, |
4143 | _("grubby: cannot specify config file with --bootloader-probe\n")); |
4144 | return 1; |
4145 | } else if (configureGrub2) { |
4146 | cfi = &grub2ConfigType; |
4147 | if (envPath) |
4148 | cfi->envFile = envPath; |
4149 | } else if (configureLilo) { |
4150 | cfi = &liloConfigType; |
4151 | } else if (configureGrub) { |
4152 | cfi = &grubConfigType; |
4153 | } else if (configureELilo) { |
4154 | cfi = &eliloConfigType; |
4155 | } else if (configureYaboot) { |
4156 | cfi = &yabootConfigType; |
4157 | } else if (configureSilo) { |
4158 | cfi = &siloConfigType; |
4159 | } else if (configureZipl) { |
4160 | cfi = &ziplConfigType; |
4161 | } else if (configureExtLinux) { |
4162 | cfi = &extlinuxConfigType; |
4163 | useextlinuxmenu=1; |
4164 | } |
4165 | |
4166 | if (!cfi) { |
4167 | if (grub2FindConfig(&grub2ConfigType)) |
4168 | cfi = &grub2ConfigType; |
4169 | else |
4170 | #ifdef __ia64__ |
4171 | cfi = &eliloConfigType; |
4172 | #elif __powerpc__ |
4173 | cfi = &yabootConfigType; |
4174 | #elif __sparc__ |
4175 | cfi = &siloConfigType; |
4176 | #elif __s390__ |
4177 | cfi = &ziplConfigType; |
4178 | #elif __s390x__ |
4179 | cfi = &ziplConfigtype; |
4180 | #else |
4181 | cfi = &grubConfigType; |
4182 | #endif |
4183 | } |
4184 | |
4185 | if (!grubConfig) { |
4186 | if (cfi->findConfig) |
4187 | grubConfig = cfi->findConfig(cfi); |
4188 | if (!grubConfig) |
4189 | grubConfig = cfi->defaultConfig; |
4190 | } |
4191 | |
4192 | if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion || |
4193 | newKernelPath || removeKernelPath || makeDefault || |
4194 | defaultKernel || displayDefaultIndex || displayDefaultTitle || |
4195 | (defaultIndex >= 0))) { |
4196 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " |
4197 | "specified option")); |
4198 | return 1; |
4199 | } |
4200 | |
4201 | if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath || |
4202 | removeKernelPath)) { |
4203 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
4204 | "be used when adding or removing kernels\n")); |
4205 | return 1; |
4206 | } |
4207 | |
4208 | if (newKernelPath && !newKernelTitle) { |
4209 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
4210 | return 1; |
4211 | } else if (!newKernelPath && (newKernelTitle || copyDefault || |
4212 | (newKernelInitrd && !updateKernelPath)|| |
4213 | makeDefault || extraInitrdCount > 0)) { |
4214 | fprintf(stderr, _("grubby: kernel path expected\n")); |
4215 | return 1; |
4216 | } |
4217 | |
4218 | if (newKernelPath && updateKernelPath) { |
4219 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
4220 | "not be used together")); |
4221 | return 1; |
4222 | } |
4223 | |
4224 | if (makeDefault && defaultKernel) { |
4225 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
4226 | "may not be used together\n")); |
4227 | return 1; |
4228 | } else if (defaultKernel && removeKernelPath && |
4229 | !strcmp(defaultKernel, removeKernelPath)) { |
4230 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); |
4231 | return 1; |
4232 | } else if (defaultKernel && newKernelPath && |
4233 | !strcmp(defaultKernel, newKernelPath)) { |
4234 | makeDefault = 1; |
4235 | defaultKernel = NULL; |
4236 | } |
4237 | else if (defaultKernel && (defaultIndex >= 0)) { |
4238 | fprintf(stderr, _("grubby: --set-default and --set-default-index " |
4239 | "may not be used together\n")); |
4240 | return 1; |
4241 | } |
4242 | |
4243 | if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) { |
4244 | fprintf(stderr, _("grubby: output file must be specified if stdin " |
4245 | "is used\n")); |
4246 | return 1; |
4247 | } |
4248 | |
4249 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel |
4250 | && !kernelInfo && !bootloaderProbe && !updateKernelPath |
4251 | && !removeMBKernel && !displayDefaultIndex && !displayDefaultTitle |
4252 | && (defaultIndex == -1)) { |
4253 | fprintf(stderr, _("grubby: no action specified\n")); |
4254 | return 1; |
4255 | } |
4256 | |
4257 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
4258 | |
4259 | if (cfi->needsBootPrefix) { |
4260 | if (!bootPrefix) { |
4261 | bootPrefix = findBootPrefix(); |
4262 | if (!bootPrefix) return 1; |
4263 | } else { |
4264 | /* this shouldn't end with a / */ |
4265 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
4266 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
4267 | } |
4268 | } else { |
4269 | bootPrefix = ""; |
4270 | } |
4271 | |
4272 | if (!cfi->mbAllowExtraInitRds && |
4273 | extraInitrdCount > 0) { |
4274 | fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig); |
4275 | return 1; |
4276 | } |
4277 | |
4278 | if (bootloaderProbe) { |
4279 | int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0; |
4280 | struct grubConfig * lconfig, * gconfig, * yconfig, * econfig; |
4281 | |
4282 | const char *grub2config = grub2FindConfig(&grub2ConfigType); |
4283 | if (grub2config) { |
4284 | gconfig = readConfig(grub2config, &grub2ConfigType); |
4285 | if (!gconfig) |
4286 | gr2c = 1; |
4287 | else |
4288 | gr2c = checkForGrub2(gconfig); |
4289 | } |
4290 | |
4291 | const char *grubconfig = grubFindConfig(&grubConfigType); |
4292 | if (!access(grubconfig, F_OK)) { |
4293 | gconfig = readConfig(grubconfig, &grubConfigType); |
4294 | if (!gconfig) |
4295 | grc = 1; |
4296 | else |
4297 | grc = checkForGrub(gconfig); |
4298 | } |
4299 | |
4300 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
4301 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); |
4302 | if (!lconfig) |
4303 | lrc = 1; |
4304 | else |
4305 | lrc = checkForLilo(lconfig); |
4306 | } |
4307 | |
4308 | if (!access(eliloConfigType.defaultConfig, F_OK)) { |
4309 | econfig = readConfig(eliloConfigType.defaultConfig, |
4310 | &eliloConfigType); |
4311 | if (!econfig) |
4312 | erc = 1; |
4313 | else |
4314 | erc = checkForElilo(econfig); |
4315 | } |
4316 | |
4317 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
4318 | lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType); |
4319 | if (!lconfig) |
4320 | extrc = 1; |
4321 | else |
4322 | extrc = checkForExtLinux(lconfig); |
4323 | } |
4324 | |
4325 | |
4326 | if (!access(yabootConfigType.defaultConfig, F_OK)) { |
4327 | yconfig = readConfig(yabootConfigType.defaultConfig, |
4328 | &yabootConfigType); |
4329 | if (!yconfig) |
4330 | yrc = 1; |
4331 | else |
4332 | yrc = checkForYaboot(yconfig); |
4333 | } |
4334 | |
4335 | if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1 || |
4336 | erc == 1) |
4337 | return 1; |
4338 | |
4339 | if (lrc == 2) printf("lilo\n"); |
4340 | if (gr2c == 2) printf("grub2\n"); |
4341 | if (grc == 2) printf("grub\n"); |
4342 | if (extrc == 2) printf("extlinux\n"); |
4343 | if (yrc == 2) printf("yaboot\n"); |
4344 | if (erc == 2) printf("elilo\n"); |
4345 | |
4346 | return 0; |
4347 | } |
4348 | |
4349 | if (grubConfig == NULL) { |
4350 | printf("Could not find bootloader configuration file.\n"); |
4351 | exit(1); |
4352 | } |
4353 | |
4354 | config = readConfig(grubConfig, cfi); |
4355 | if (!config) return 1; |
4356 | |
4357 | if (displayDefault) { |
4358 | struct singleLine * line; |
4359 | struct singleEntry * entry; |
4360 | char * rootspec; |
4361 | |
4362 | if (config->defaultImage == -1) return 0; |
4363 | entry = findEntryByIndex(config, config->defaultImage); |
4364 | if (!entry) return 0; |
4365 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; |
4366 | |
4367 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
4368 | if (!line) return 0; |
4369 | |
4370 | rootspec = getRootSpecifier(line->elements[1].item); |
4371 | printf("%s%s\n", bootPrefix, line->elements[1].item + |
4372 | ((rootspec != NULL) ? strlen(rootspec) : 0)); |
4373 | |
4374 | return 0; |
4375 | |
4376 | } else if (displayDefaultTitle) { |
4377 | struct singleLine * line; |
4378 | struct singleEntry * entry; |
4379 | |
4380 | if (config->defaultImage == -1) return 0; |
4381 | entry = findEntryByIndex(config, config->defaultImage); |
4382 | if (!entry) return 0; |
4383 | |
4384 | if (!configureGrub2) { |
4385 | line = getLineByType(LT_TITLE, entry->lines); |
4386 | if (!line) return 0; |
4387 | printf("%s\n", line->elements[1].item); |
4388 | |
4389 | } else { |
4390 | char * title; |
4391 | |
4392 | dbgPrintf("This is GRUB2, default title is embeded in menuentry\n"); |
4393 | line = getLineByType(LT_MENUENTRY, entry->lines); |
4394 | if (!line) return 0; |
4395 | title = grub2ExtractTitle(line); |
4396 | if (title) |
4397 | printf("%s\n", title); |
4398 | } |
4399 | return 0; |
4400 | |
4401 | } else if (displayDefaultIndex) { |
4402 | if (config->defaultImage == -1) return 0; |
4403 | printf("%i\n", config->defaultImage); |
4404 | return 0; |
4405 | |
4406 | } else if (kernelInfo) |
4407 | return displayInfo(config, kernelInfo, bootPrefix); |
4408 | |
4409 | if (copyDefault) { |
4410 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
4411 | if (!template) return 1; |
4412 | } |
4413 | |
4414 | markRemovedImage(config, removeKernelPath, bootPrefix); |
4415 | markRemovedImage(config, removeMBKernel, bootPrefix); |
4416 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, |
4417 | bootPrefix, flags, defaultIndex); |
4418 | setFallbackImage(config, newKernelPath != NULL); |
4419 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
4420 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; |
4421 | if (updateKernelPath && newKernelInitrd) { |
4422 | if (updateInitrd(config, updateKernelPath, bootPrefix, |
4423 | newKernelInitrd)) return 1; |
4424 | } |
4425 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
4426 | newKernelTitle, newKernelArgs, newKernelInitrd, |
4427 | (const char **)extraInitrds, extraInitrdCount, |
4428 | newMBKernel, newMBKernelArgs)) return 1; |
4429 | |
4430 | |
4431 | if (numEntries(config) == 0) { |
4432 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " |
4433 | "Not writing out new config.\n")); |
4434 | return 1; |
4435 | } |
4436 | |
4437 | if (!outputFile) |
4438 | outputFile = (char *)grubConfig; |
4439 | |
4440 | return writeConfig(config, outputFile, bootPrefix); |
4441 | } |