Contents of /trunk/grubby/grubby.c
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Tue Jun 27 14:30:29 2017 UTC (7 years, 3 months ago) by niro
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Tue Jun 27 14:30:29 2017 UTC (7 years, 3 months ago) by niro
File MIME type: text/plain
File size: 130177 byte(s)
Ensure command line updates also honor --set-index
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 | #if defined(__aarch64__) |
64 | #define isEfiOnly 1 |
65 | #else |
66 | #define isEfiOnly 0 |
67 | #endif |
68 | |
69 | char *saved_command_line = NULL; |
70 | |
71 | /* comments get lumped in with indention */ |
72 | struct lineElement { |
73 | char *item; |
74 | char *indent; |
75 | }; |
76 | |
77 | enum lineType_e { |
78 | LT_UNIDENTIFIED = 0, |
79 | LT_WHITESPACE = 1 << 0, |
80 | LT_TITLE = 1 << 1, |
81 | LT_KERNEL = 1 << 2, |
82 | LT_INITRD = 1 << 3, |
83 | LT_HYPER = 1 << 4, |
84 | LT_DEFAULT = 1 << 5, |
85 | LT_MBMODULE = 1 << 6, |
86 | LT_ROOT = 1 << 7, |
87 | LT_FALLBACK = 1 << 8, |
88 | LT_KERNELARGS = 1 << 9, |
89 | LT_BOOT = 1 << 10, |
90 | LT_BOOTROOT = 1 << 11, |
91 | LT_LBA = 1 << 12, |
92 | LT_OTHER = 1 << 13, |
93 | LT_GENERIC = 1 << 14, |
94 | LT_ECHO = 1 << 16, |
95 | LT_MENUENTRY = 1 << 17, |
96 | LT_ENTRY_END = 1 << 18, |
97 | LT_SET_VARIABLE = 1 << 19, |
98 | LT_KERNEL_EFI = 1 << 20, |
99 | LT_INITRD_EFI = 1 << 21, |
100 | LT_KERNEL_16 = 1 << 22, |
101 | LT_INITRD_16 = 1 << 23, |
102 | LT_DEVTREE = 1 << 24, |
103 | LT_UNKNOWN = 1 << 25, |
104 | }; |
105 | |
106 | struct singleLine { |
107 | char *indent; |
108 | int numElements; |
109 | struct lineElement *elements; |
110 | struct singleLine *next; |
111 | enum lineType_e type; |
112 | }; |
113 | |
114 | struct singleEntry { |
115 | struct singleLine *lines; |
116 | int skip; |
117 | int multiboot; |
118 | struct singleEntry *next; |
119 | }; |
120 | |
121 | #define GRUBBY_BADIMAGE_OKAY (1 << 0) |
122 | |
123 | #define GRUB_CONFIG_NO_DEFAULT (1 << 0) /* don't write out default=0 */ |
124 | |
125 | /* These defines are (only) used in addNewKernel() */ |
126 | #define NEED_KERNEL (1 << 0) |
127 | #define NEED_INITRD (1 << 1) |
128 | #define NEED_TITLE (1 << 2) |
129 | #define NEED_ARGS (1 << 3) |
130 | #define NEED_MB (1 << 4) |
131 | #define NEED_END (1 << 5) |
132 | #define NEED_DEVTREE (1 << 6) |
133 | |
134 | #define MAIN_DEFAULT (1 << 0) |
135 | #define DEFAULT_SAVED -2 |
136 | #define DEFAULT_SAVED_GRUB2 -3 |
137 | |
138 | struct keywordTypes { |
139 | char *key; |
140 | enum lineType_e type; |
141 | char nextChar; |
142 | char separatorChar; |
143 | }; |
144 | |
145 | struct configFileInfo; |
146 | |
147 | typedef const char *(*findConfigFunc) (struct configFileInfo *); |
148 | typedef const int (*writeLineFunc) (struct configFileInfo *, |
149 | struct singleLine * line); |
150 | typedef char *(*getEnvFunc) (struct configFileInfo *, char *name); |
151 | typedef int (*setEnvFunc) (struct configFileInfo *, char *name, char *value); |
152 | |
153 | struct configFileInfo { |
154 | char *defaultConfig; |
155 | findConfigFunc findConfig; |
156 | writeLineFunc writeLine; |
157 | getEnvFunc getEnv; |
158 | setEnvFunc setEnv; |
159 | struct keywordTypes *keywords; |
160 | int caseInsensitive; |
161 | int defaultIsIndex; |
162 | int defaultIsVariable; |
163 | int defaultSupportSaved; |
164 | int defaultIsSaved; |
165 | int defaultIsUnquoted; |
166 | enum lineType_e entryStart; |
167 | enum lineType_e entryEnd; |
168 | int needsBootPrefix; |
169 | int argsInQuotes; |
170 | int maxTitleLength; |
171 | int titleBracketed; |
172 | int titlePosition; |
173 | int mbHyperFirst; |
174 | int mbInitRdIsModule; |
175 | int mbConcatArgs; |
176 | int mbAllowExtraInitRds; |
177 | char *envFile; |
178 | }; |
179 | |
180 | struct keywordTypes grubKeywords[] = { |
181 | {"title", LT_TITLE, ' '}, |
182 | {"root", LT_BOOTROOT, ' '}, |
183 | {"default", LT_DEFAULT, ' '}, |
184 | {"fallback", LT_FALLBACK, ' '}, |
185 | {"kernel", LT_KERNEL, ' '}, |
186 | {"initrd", LT_INITRD, ' ', ' '}, |
187 | {"module", LT_MBMODULE, ' '}, |
188 | {"kernel", LT_HYPER, ' '}, |
189 | {NULL, 0, 0}, |
190 | }; |
191 | |
192 | const char *grubFindConfig(struct configFileInfo *cfi) |
193 | { |
194 | static const char *configFiles[] = { |
195 | "/boot/grub/grub.conf", |
196 | "/boot/grub/menu.lst", |
197 | "/etc/grub.conf", |
198 | NULL |
199 | }; |
200 | static int i = -1; |
201 | |
202 | if (i == -1) { |
203 | for (i = 0; configFiles[i] != NULL; i++) { |
204 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
205 | if (!access(configFiles[i], R_OK)) { |
206 | dbgPrintf("found\n"); |
207 | return configFiles[i]; |
208 | } |
209 | dbgPrintf("not found\n"); |
210 | } |
211 | } |
212 | return configFiles[i]; |
213 | } |
214 | |
215 | struct configFileInfo grubConfigType = { |
216 | .findConfig = grubFindConfig, |
217 | .keywords = grubKeywords, |
218 | .defaultIsIndex = 1, |
219 | .defaultSupportSaved = 1, |
220 | .entryStart = LT_TITLE, |
221 | .needsBootPrefix = 1, |
222 | .mbHyperFirst = 1, |
223 | .mbInitRdIsModule = 1, |
224 | .mbAllowExtraInitRds = 1, |
225 | .titlePosition = 1, |
226 | }; |
227 | |
228 | struct keywordTypes grub2Keywords[] = { |
229 | {"menuentry", LT_MENUENTRY, ' '}, |
230 | {"}", LT_ENTRY_END, ' '}, |
231 | {"echo", LT_ECHO, ' '}, |
232 | {"set", LT_SET_VARIABLE, ' ', '='}, |
233 | {"root", LT_BOOTROOT, ' '}, |
234 | {"default", LT_DEFAULT, ' '}, |
235 | {"fallback", LT_FALLBACK, ' '}, |
236 | {"linux", LT_KERNEL, ' '}, |
237 | {"linuxefi", LT_KERNEL_EFI, ' '}, |
238 | {"linux16", LT_KERNEL_16, ' '}, |
239 | {"initrd", LT_INITRD, ' ', ' '}, |
240 | {"initrdefi", LT_INITRD_EFI, ' ', ' '}, |
241 | {"initrd16", LT_INITRD_16, ' ', ' '}, |
242 | {"module", LT_MBMODULE, ' '}, |
243 | {"kernel", LT_HYPER, ' '}, |
244 | {"devicetree", LT_DEVTREE, ' '}, |
245 | {NULL, 0, 0}, |
246 | }; |
247 | |
248 | const char *grub2FindConfig(struct configFileInfo *cfi) |
249 | { |
250 | static const char *configFiles[] = { |
251 | "/boot/grub/grub-efi.cfg", |
252 | "/boot/grub/grub.cfg", |
253 | "/etc/grub2-efi.cfg", |
254 | "/etc/grub2.cfg", |
255 | "/boot/grub2/grub.cfg", |
256 | "/boot/grub2-efi/grub.cfg", |
257 | NULL |
258 | }; |
259 | static int i = -1; |
260 | static const char *grub_cfg = "/boot/grub/grub.cfg"; |
261 | int rc = -1; |
262 | |
263 | if (i == -1) { |
264 | for (i = 0; configFiles[i] != NULL; i++) { |
265 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
266 | if ((rc = access(configFiles[i], R_OK))) { |
267 | if (errno == EACCES) { |
268 | printf |
269 | ("Unable to access bootloader configuration file " |
270 | "\"%s\": %m\n", configFiles[i]); |
271 | exit(1); |
272 | } |
273 | continue; |
274 | } else { |
275 | dbgPrintf("found\n"); |
276 | return configFiles[i]; |
277 | } |
278 | } |
279 | } |
280 | |
281 | /* Ubuntu renames grub2 to grub, so check for the grub.d directory |
282 | * that isn't in grub1, and if it exists, return the config file path |
283 | * that they use. */ |
284 | if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) { |
285 | dbgPrintf("found\n"); |
286 | return grub_cfg; |
287 | } |
288 | |
289 | dbgPrintf("not found\n"); |
290 | return configFiles[i]; |
291 | } |
292 | |
293 | /* kind of hacky. It'll give the first 1024 bytes, ish. */ |
294 | static char *grub2GetEnv(struct configFileInfo *info, char *name) |
295 | { |
296 | static char buf[1025]; |
297 | char *s = NULL; |
298 | char *ret = NULL; |
299 | char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv"; |
300 | int rc = |
301 | asprintf(&s, "grub-editenv %s list | grep '^%s='", envFile, name); |
302 | |
303 | if (rc < 0) |
304 | return NULL; |
305 | |
306 | FILE *f = popen(s, "r"); |
307 | if (!f) |
308 | goto out; |
309 | |
310 | memset(buf, '\0', sizeof(buf)); |
311 | ret = fgets(buf, 1024, f); |
312 | pclose(f); |
313 | |
314 | if (ret) { |
315 | ret += strlen(name) + 1; |
316 | ret[strlen(ret) - 1] = '\0'; |
317 | } |
318 | dbgPrintf("grub2GetEnv(%s): %s\n", name, ret); |
319 | out: |
320 | free(s); |
321 | return ret; |
322 | } |
323 | |
324 | static int sPopCount(const char *s, const char *c) |
325 | { |
326 | int ret = 0; |
327 | if (!s) |
328 | return -1; |
329 | for (int i = 0; s[i] != '\0'; i++) |
330 | for (int j = 0; c[j] != '\0'; j++) |
331 | if (s[i] == c[j]) |
332 | ret++; |
333 | return ret; |
334 | } |
335 | |
336 | static char *shellEscape(const char *s) |
337 | { |
338 | int l = strlen(s) + sPopCount(s, "'") * 2; |
339 | |
340 | char *ret = calloc(l + 1, sizeof(*ret)); |
341 | if (!ret) |
342 | return NULL; |
343 | for (int i = 0, j = 0; s[i] != '\0'; i++, j++) { |
344 | if (s[i] == '\'') |
345 | ret[j++] = '\\'; |
346 | ret[j] = s[i]; |
347 | } |
348 | return ret; |
349 | } |
350 | |
351 | static void unquote(char *s) |
352 | { |
353 | int l = strlen(s); |
354 | |
355 | if ((s[l - 1] == '\'' && s[0] == '\'') |
356 | || (s[l - 1] == '"' && s[0] == '"')) { |
357 | memmove(s, s + 1, l - 2); |
358 | s[l - 2] = '\0'; |
359 | } |
360 | } |
361 | |
362 | static int grub2SetEnv(struct configFileInfo *info, char *name, char *value) |
363 | { |
364 | char *s = NULL; |
365 | int rc = 0; |
366 | char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv"; |
367 | |
368 | unquote(value); |
369 | value = shellEscape(value); |
370 | if (!value) |
371 | return -1; |
372 | |
373 | rc = asprintf(&s, "grub-editenv %s set '%s=%s'", envFile, name, value); |
374 | free(value); |
375 | if (rc < 0) |
376 | return -1; |
377 | |
378 | dbgPrintf("grub2SetEnv(%s): %s\n", name, s); |
379 | rc = system(s); |
380 | free(s); |
381 | return rc; |
382 | } |
383 | |
384 | /* this is a gigantic hack to avoid clobbering grub2 variables... */ |
385 | static int is_special_grub2_variable(const char *name) |
386 | { |
387 | if (!strcmp(name, "\"${next_entry}\"")) |
388 | return 1; |
389 | if (!strcmp(name, "\"${prev_saved_entry}\"")) |
390 | return 1; |
391 | return 0; |
392 | } |
393 | |
394 | int sizeOfSingleLine(struct singleLine *line) |
395 | { |
396 | int count = 0; |
397 | |
398 | for (int i = 0; i < line->numElements; i++) { |
399 | int indentSize = 0; |
400 | |
401 | count = count + strlen(line->elements[i].item); |
402 | |
403 | indentSize = strlen(line->elements[i].indent); |
404 | if (indentSize > 0) |
405 | count = count + indentSize; |
406 | else |
407 | /* be extra safe and add room for whitespaces */ |
408 | count = count + 1; |
409 | } |
410 | |
411 | /* room for trailing terminator */ |
412 | count = count + 1; |
413 | |
414 | return count; |
415 | } |
416 | |
417 | static int isquote(char q) |
418 | { |
419 | if (q == '\'' || q == '\"') |
420 | return 1; |
421 | return 0; |
422 | } |
423 | |
424 | static int iskernel(enum lineType_e type) |
425 | { |
426 | return (type == LT_KERNEL || type == LT_KERNEL_EFI |
427 | || type == LT_KERNEL_16); |
428 | } |
429 | |
430 | static int isinitrd(enum lineType_e type) |
431 | { |
432 | return (type == LT_INITRD || type == LT_INITRD_EFI |
433 | || type == LT_INITRD_16); |
434 | } |
435 | |
436 | char *grub2ExtractTitle(struct singleLine *line) |
437 | { |
438 | char *current; |
439 | char *current_indent; |
440 | int current_len; |
441 | int current_indent_len; |
442 | int i; |
443 | |
444 | /* bail out if line does not start with menuentry */ |
445 | if (strcmp(line->elements[0].item, "menuentry")) |
446 | return NULL; |
447 | |
448 | i = 1; |
449 | current = line->elements[i].item; |
450 | current_len = strlen(current); |
451 | |
452 | /* if second word is quoted, strip the quotes and return single word */ |
453 | if (isquote(*current) && isquote(current[current_len - 1])) { |
454 | char *tmp; |
455 | |
456 | tmp = strdup(current + 1); |
457 | if (!tmp) |
458 | return NULL; |
459 | tmp[strlen(tmp) - 1] = '\0'; |
460 | return tmp; |
461 | } |
462 | |
463 | /* if no quotes, return second word verbatim */ |
464 | if (!isquote(*current)) |
465 | return current; |
466 | |
467 | /* second element start with a quote, so we have to find the element |
468 | * whose last character is also quote (assuming it's the closing one) */ |
469 | int resultMaxSize; |
470 | char *result; |
471 | /* need to ensure that ' does not match " as we search */ |
472 | char quote_char = *current; |
473 | |
474 | resultMaxSize = sizeOfSingleLine(line); |
475 | result = malloc(resultMaxSize); |
476 | snprintf(result, resultMaxSize, "%s", ++current); |
477 | |
478 | i++; |
479 | for (; i < line->numElements; ++i) { |
480 | current = line->elements[i].item; |
481 | current_len = strlen(current); |
482 | current_indent = line->elements[i].indent; |
483 | current_indent_len = strlen(current_indent); |
484 | |
485 | strncat(result, current_indent, current_indent_len); |
486 | if (current[current_len - 1] != quote_char) { |
487 | strncat(result, current, current_len); |
488 | } else { |
489 | strncat(result, current, current_len - 1); |
490 | break; |
491 | } |
492 | } |
493 | return result; |
494 | } |
495 | |
496 | struct configFileInfo grub2ConfigType = { |
497 | .findConfig = grub2FindConfig, |
498 | .getEnv = grub2GetEnv, |
499 | .setEnv = grub2SetEnv, |
500 | .keywords = grub2Keywords, |
501 | .defaultIsIndex = 1, |
502 | .defaultSupportSaved = 1, |
503 | .defaultIsVariable = 1, |
504 | .entryStart = LT_MENUENTRY, |
505 | .entryEnd = LT_ENTRY_END, |
506 | .titlePosition = 1, |
507 | .needsBootPrefix = 1, |
508 | .mbHyperFirst = 1, |
509 | .mbInitRdIsModule = 1, |
510 | .mbAllowExtraInitRds = 1, |
511 | }; |
512 | |
513 | struct keywordTypes yabootKeywords[] = { |
514 | {"label", LT_TITLE, '='}, |
515 | {"root", LT_ROOT, '='}, |
516 | {"default", LT_DEFAULT, '='}, |
517 | {"image", LT_KERNEL, '='}, |
518 | {"bsd", LT_GENERIC, '='}, |
519 | {"macos", LT_GENERIC, '='}, |
520 | {"macosx", LT_GENERIC, '='}, |
521 | {"magicboot", LT_GENERIC, '='}, |
522 | {"darwin", LT_GENERIC, '='}, |
523 | {"timeout", LT_GENERIC, '='}, |
524 | {"install", LT_GENERIC, '='}, |
525 | {"fstype", LT_GENERIC, '='}, |
526 | {"hfstype", LT_GENERIC, '='}, |
527 | {"delay", LT_GENERIC, '='}, |
528 | {"defaultos", LT_GENERIC, '='}, |
529 | {"init-message", LT_GENERIC, '='}, |
530 | {"enablecdboot", LT_GENERIC, ' '}, |
531 | {"enableofboot", LT_GENERIC, ' '}, |
532 | {"enablenetboot", LT_GENERIC, ' '}, |
533 | {"nonvram", LT_GENERIC, ' '}, |
534 | {"hide", LT_GENERIC, ' '}, |
535 | {"protect", LT_GENERIC, ' '}, |
536 | {"nobless", LT_GENERIC, ' '}, |
537 | {"nonvram", LT_GENERIC, ' '}, |
538 | {"brokenosx", LT_GENERIC, ' '}, |
539 | {"usemount", LT_GENERIC, ' '}, |
540 | {"mntpoint", LT_GENERIC, '='}, |
541 | {"partition", LT_GENERIC, '='}, |
542 | {"device", LT_GENERIC, '='}, |
543 | {"fstype", LT_GENERIC, '='}, |
544 | {"initrd", LT_INITRD, '=', ';'}, |
545 | {"append", LT_KERNELARGS, '='}, |
546 | {"boot", LT_BOOT, '='}, |
547 | {"lba", LT_LBA, ' '}, |
548 | {NULL, 0, 0}, |
549 | }; |
550 | |
551 | struct keywordTypes liloKeywords[] = { |
552 | {"label", LT_TITLE, '='}, |
553 | {"root", LT_ROOT, '='}, |
554 | {"default", LT_DEFAULT, '='}, |
555 | {"image", LT_KERNEL, '='}, |
556 | {"other", LT_OTHER, '='}, |
557 | {"initrd", LT_INITRD, '='}, |
558 | {"append", LT_KERNELARGS, '='}, |
559 | {"boot", LT_BOOT, '='}, |
560 | {"lba", LT_LBA, ' '}, |
561 | {NULL, 0, 0}, |
562 | }; |
563 | |
564 | struct keywordTypes eliloKeywords[] = { |
565 | {"label", LT_TITLE, '='}, |
566 | {"root", LT_ROOT, '='}, |
567 | {"default", LT_DEFAULT, '='}, |
568 | {"image", LT_KERNEL, '='}, |
569 | {"initrd", LT_INITRD, '='}, |
570 | {"append", LT_KERNELARGS, '='}, |
571 | {"vmm", LT_HYPER, '='}, |
572 | {NULL, 0, 0}, |
573 | }; |
574 | |
575 | struct keywordTypes siloKeywords[] = { |
576 | {"label", LT_TITLE, '='}, |
577 | {"root", LT_ROOT, '='}, |
578 | {"default", LT_DEFAULT, '='}, |
579 | {"image", LT_KERNEL, '='}, |
580 | {"other", LT_OTHER, '='}, |
581 | {"initrd", LT_INITRD, '='}, |
582 | {"append", LT_KERNELARGS, '='}, |
583 | {"boot", LT_BOOT, '='}, |
584 | {NULL, 0, 0}, |
585 | }; |
586 | |
587 | struct keywordTypes ziplKeywords[] = { |
588 | {"target", LT_BOOTROOT, '='}, |
589 | {"image", LT_KERNEL, '='}, |
590 | {"ramdisk", LT_INITRD, '='}, |
591 | {"parameters", LT_KERNELARGS, '='}, |
592 | {"default", LT_DEFAULT, '='}, |
593 | {NULL, 0, 0}, |
594 | }; |
595 | |
596 | struct keywordTypes extlinuxKeywords[] = { |
597 | {"label", LT_TITLE, ' '}, |
598 | {"root", LT_ROOT, ' '}, |
599 | {"default", LT_DEFAULT, ' '}, |
600 | {"kernel", LT_KERNEL, ' '}, |
601 | {"initrd", LT_INITRD, ' ', ','}, |
602 | {"append", LT_KERNELARGS, ' '}, |
603 | {"prompt", LT_UNKNOWN, ' '}, |
604 | {"fdt", LT_DEVTREE, ' '}, |
605 | {"fdtdir", LT_DEVTREE, ' '}, |
606 | {NULL, 0, 0}, |
607 | }; |
608 | |
609 | int useextlinuxmenu; |
610 | struct configFileInfo eliloConfigType = { |
611 | .defaultConfig = "/boot/efi/EFI/redhat/elilo.conf", |
612 | .keywords = eliloKeywords, |
613 | .entryStart = LT_KERNEL, |
614 | .needsBootPrefix = 1, |
615 | .argsInQuotes = 1, |
616 | .mbConcatArgs = 1, |
617 | .titlePosition = 1, |
618 | }; |
619 | |
620 | struct configFileInfo liloConfigType = { |
621 | .defaultConfig = "/etc/lilo.conf", |
622 | .keywords = liloKeywords, |
623 | .entryStart = LT_KERNEL, |
624 | .argsInQuotes = 1, |
625 | .maxTitleLength = 15, |
626 | .titlePosition = 1, |
627 | }; |
628 | |
629 | struct configFileInfo yabootConfigType = { |
630 | .defaultConfig = "/etc/yaboot.conf", |
631 | .keywords = yabootKeywords, |
632 | .entryStart = LT_KERNEL, |
633 | .needsBootPrefix = 1, |
634 | .argsInQuotes = 1, |
635 | .maxTitleLength = 15, |
636 | .mbAllowExtraInitRds = 1, |
637 | .titlePosition = 1, |
638 | }; |
639 | |
640 | struct configFileInfo siloConfigType = { |
641 | .defaultConfig = "/etc/silo.conf", |
642 | .keywords = siloKeywords, |
643 | .entryStart = LT_KERNEL, |
644 | .needsBootPrefix = 1, |
645 | .argsInQuotes = 1, |
646 | .maxTitleLength = 15, |
647 | .titlePosition = 1, |
648 | }; |
649 | |
650 | struct configFileInfo ziplConfigType = { |
651 | .defaultConfig = "/etc/zipl.conf", |
652 | .keywords = ziplKeywords, |
653 | .entryStart = LT_TITLE, |
654 | .argsInQuotes = 1, |
655 | .titleBracketed = 1, |
656 | }; |
657 | |
658 | struct configFileInfo extlinuxConfigType = { |
659 | .defaultConfig = "/boot/extlinux/extlinux.conf", |
660 | .keywords = extlinuxKeywords, |
661 | .caseInsensitive = 1, |
662 | .entryStart = LT_TITLE, |
663 | .needsBootPrefix = 1, |
664 | .maxTitleLength = 255, |
665 | .mbAllowExtraInitRds = 1, |
666 | .defaultIsUnquoted = 1, |
667 | .titlePosition = 1, |
668 | }; |
669 | |
670 | struct grubConfig { |
671 | struct singleLine *theLines; |
672 | struct singleEntry *entries; |
673 | char *primaryIndent; |
674 | char *secondaryIndent; |
675 | int defaultImage; /* -1 if none specified -- this value is |
676 | * written out, overriding original */ |
677 | int fallbackImage; /* just like defaultImage */ |
678 | int flags; |
679 | struct configFileInfo *cfi; |
680 | }; |
681 | |
682 | blkid_cache blkid; |
683 | |
684 | struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index); |
685 | struct singleEntry *findEntryByPath(struct grubConfig *cfg, |
686 | const char *path, const char *prefix, |
687 | int *index); |
688 | struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title, |
689 | int *index); |
690 | static int readFile(int fd, char **bufPtr); |
691 | static void lineInit(struct singleLine *line); |
692 | struct singleLine *lineDup(struct singleLine *line); |
693 | static void lineFree(struct singleLine *line); |
694 | static int lineWrite(FILE * out, struct singleLine *line, |
695 | struct configFileInfo *cfi); |
696 | static int getNextLine(char **bufPtr, struct singleLine *line, |
697 | struct configFileInfo *cfi); |
698 | static char *getRootSpecifier(char *str); |
699 | static void requote(struct singleLine *line, struct configFileInfo *cfi); |
700 | static void insertElement(struct singleLine *line, |
701 | const char *item, int insertHere, |
702 | struct configFileInfo *cfi); |
703 | static void removeElement(struct singleLine *line, int removeHere); |
704 | static struct keywordTypes *getKeywordByType(enum lineType_e type, |
705 | struct configFileInfo *cfi); |
706 | static enum lineType_e getTypeByKeyword(char *keyword, |
707 | struct configFileInfo *cfi); |
708 | static struct singleLine *getLineByType(enum lineType_e type, |
709 | struct singleLine *line); |
710 | static int checkForExtLinux(struct grubConfig *config); |
711 | struct singleLine *addLineTmpl(struct singleEntry *entry, |
712 | struct singleLine *tmplLine, |
713 | struct singleLine *prevLine, |
714 | const char *val, struct configFileInfo *cfi); |
715 | struct singleLine *addLine(struct singleEntry *entry, |
716 | struct configFileInfo *cfi, |
717 | enum lineType_e type, char *defaultIndent, |
718 | const char *val); |
719 | |
720 | static char *sdupprintf(const char *format, ...) |
721 | #ifdef __GNUC__ |
722 | __attribute__ ((format(printf, 1, 2))); |
723 | #else |
724 | ; |
725 | #endif |
726 | |
727 | static char *sdupprintf(const char *format, ...) |
728 | { |
729 | char *buf = NULL; |
730 | char c; |
731 | va_list args; |
732 | size_t size = 0; |
733 | va_start(args, format); |
734 | |
735 | /* XXX requires C99 vsnprintf behavior */ |
736 | size = vsnprintf(&c, 1, format, args) + 1; |
737 | if (size == -1) { |
738 | printf("ERROR: vsnprintf behavior is not C99\n"); |
739 | abort(); |
740 | } |
741 | |
742 | va_end(args); |
743 | va_start(args, format); |
744 | |
745 | buf = malloc(size); |
746 | if (buf == NULL) |
747 | return NULL; |
748 | vsnprintf(buf, size, format, args); |
749 | va_end(args); |
750 | |
751 | return buf; |
752 | } |
753 | |
754 | static inline int |
755 | kwcmp(struct keywordTypes *kw, const char * label, int case_insensitive) |
756 | { |
757 | int kwl = strlen(kw->key); |
758 | int ll = strlen(label); |
759 | int rc; |
760 | int (*snc)(const char *s1, const char *s2, size_t n) = |
761 | case_insensitive ? strncasecmp : strncmp; |
762 | int (*sc)(const char *s1, const char *s2) = |
763 | case_insensitive ? strcasecmp : strcmp; |
764 | |
765 | rc = snc(kw->key, label, kwl); |
766 | if (rc) |
767 | return rc; |
768 | |
769 | for (int i = kwl; i < ll; i++) { |
770 | if (isspace(label[i])) |
771 | return 0; |
772 | if (kw->separatorChar && label[i] == kw->separatorChar) |
773 | return 0; |
774 | else if (kw->nextChar && label[i] == kw->nextChar) |
775 | return 0; |
776 | return sc(kw->key+kwl, label+kwl); |
777 | } |
778 | return 0; |
779 | } |
780 | |
781 | static enum lineType_e preferredLineType(enum lineType_e type, |
782 | struct configFileInfo *cfi) |
783 | { |
784 | if (isEfi && cfi == &grub2ConfigType) { |
785 | switch (type) { |
786 | case LT_KERNEL: |
787 | return isEfiOnly ? LT_KERNEL : LT_KERNEL_EFI; |
788 | case LT_INITRD: |
789 | return isEfiOnly ? LT_INITRD : LT_INITRD_EFI; |
790 | default: |
791 | return type; |
792 | } |
793 | #if defined(__i386__) || defined(__x86_64__) |
794 | } else if (cfi == &grub2ConfigType) { |
795 | switch (type) { |
796 | case LT_KERNEL: |
797 | return LT_KERNEL_16; |
798 | case LT_INITRD: |
799 | return LT_INITRD_16; |
800 | default: |
801 | return type; |
802 | } |
803 | #endif |
804 | } |
805 | return type; |
806 | } |
807 | |
808 | static struct keywordTypes *getKeywordByType(enum lineType_e type, |
809 | struct configFileInfo *cfi) |
810 | { |
811 | for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) { |
812 | if (kw->type == type) |
813 | return kw; |
814 | } |
815 | return NULL; |
816 | } |
817 | |
818 | static char *getKeyByType(enum lineType_e type, struct configFileInfo *cfi) |
819 | { |
820 | struct keywordTypes *kt = getKeywordByType(type, cfi); |
821 | if (kt) |
822 | return kt->key; |
823 | return "unknown"; |
824 | } |
825 | |
826 | static char *getpathbyspec(char *device) |
827 | { |
828 | if (!blkid) |
829 | blkid_get_cache(&blkid, NULL); |
830 | |
831 | return blkid_get_devname(blkid, device, NULL); |
832 | } |
833 | |
834 | static char *getuuidbydev(char *device) |
835 | { |
836 | if (!blkid) |
837 | blkid_get_cache(&blkid, NULL); |
838 | |
839 | return blkid_get_tag_value(blkid, "UUID", device); |
840 | } |
841 | |
842 | static enum lineType_e getTypeByKeyword(char *keyword, |
843 | struct configFileInfo *cfi) |
844 | { |
845 | for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) { |
846 | if (!kwcmp(kw, keyword, cfi->caseInsensitive)) |
847 | return kw->type; |
848 | } |
849 | return LT_UNKNOWN; |
850 | } |
851 | |
852 | static struct singleLine *getLineByType(enum lineType_e type, |
853 | struct singleLine *line) |
854 | { |
855 | dbgPrintf("getLineByType(%d): ", type); |
856 | for (; line; line = line->next) { |
857 | dbgPrintf("%d:%s ", line->type, |
858 | line->numElements ? line->elements[0]. |
859 | item : "(empty)"); |
860 | if (line->type & type) |
861 | break; |
862 | } |
863 | dbgPrintf(line ? "\n" : " (failed)\n"); |
864 | return line; |
865 | } |
866 | |
867 | static int isBracketedTitle(struct singleLine *line) |
868 | { |
869 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
870 | int len = strlen(line->elements[0].item); |
871 | if (*(line->elements[0].item + len - 1) == ']') { |
872 | /* FIXME: this is a hack... */ |
873 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
874 | return 1; |
875 | } |
876 | } |
877 | } |
878 | return 0; |
879 | } |
880 | |
881 | static int isEntryStart(struct singleLine *line, struct configFileInfo *cfi) |
882 | { |
883 | return line->type == cfi->entryStart || line->type == LT_OTHER || |
884 | (cfi->titleBracketed && isBracketedTitle(line)); |
885 | } |
886 | |
887 | /* extract the title from within brackets (for zipl) */ |
888 | static char *extractTitle(struct grubConfig *cfg, struct singleLine *line) |
889 | { |
890 | /* bracketed title... let's extract it */ |
891 | char *title = NULL; |
892 | if (line->type == LT_TITLE) { |
893 | char *tmp = line->elements[cfg->cfi->titlePosition].item; |
894 | if (cfg->cfi->titleBracketed) { |
895 | tmp++; |
896 | title = strdup(tmp); |
897 | *(title + strlen(title) - 1) = '\0'; |
898 | } else { |
899 | title = strdup(tmp); |
900 | } |
901 | } else if (line->type == LT_MENUENTRY) |
902 | title = strdup(line->elements[1].item); |
903 | else |
904 | return NULL; |
905 | return title; |
906 | } |
907 | |
908 | static int readFile(int fd, char **bufPtr) |
909 | { |
910 | int alloced = 0, size = 0, i = 0; |
911 | char *buf = NULL; |
912 | |
913 | do { |
914 | size += i; |
915 | if ((size + 1024) > alloced) { |
916 | alloced += 4096; |
917 | buf = realloc(buf, alloced + 1); |
918 | } |
919 | } while ((i = read(fd, buf + size, 1024)) > 0); |
920 | |
921 | if (i < 0) { |
922 | fprintf(stderr, _("error reading input: %s\n"), |
923 | strerror(errno)); |
924 | free(buf); |
925 | return 1; |
926 | } |
927 | |
928 | buf = realloc(buf, size + 2); |
929 | if (size == 0) |
930 | buf[size++] = '\n'; |
931 | else if (buf[size - 1] != '\n') |
932 | buf[size++] = '\n'; |
933 | buf[size] = '\0'; |
934 | |
935 | *bufPtr = buf; |
936 | |
937 | return 0; |
938 | } |
939 | |
940 | static void lineInit(struct singleLine *line) |
941 | { |
942 | line->type = LT_UNIDENTIFIED; |
943 | line->indent = NULL; |
944 | line->elements = NULL; |
945 | line->numElements = 0; |
946 | line->next = NULL; |
947 | } |
948 | |
949 | struct singleLine *lineDup(struct singleLine *line) |
950 | { |
951 | struct singleLine *newLine = malloc(sizeof(*newLine)); |
952 | |
953 | newLine->indent = strdup(line->indent); |
954 | newLine->next = NULL; |
955 | newLine->type = line->type; |
956 | newLine->numElements = line->numElements; |
957 | newLine->elements = malloc(sizeof(*newLine->elements) * |
958 | newLine->numElements); |
959 | |
960 | for (int i = 0; i < newLine->numElements; i++) { |
961 | newLine->elements[i].indent = strdup(line->elements[i].indent); |
962 | newLine->elements[i].item = strdup(line->elements[i].item); |
963 | } |
964 | |
965 | return newLine; |
966 | } |
967 | |
968 | static void lineFree(struct singleLine *line) |
969 | { |
970 | if (line->indent) |
971 | free(line->indent); |
972 | |
973 | for (int i = 0; i < line->numElements; i++) { |
974 | free(line->elements[i].item); |
975 | free(line->elements[i].indent); |
976 | } |
977 | |
978 | if (line->elements) |
979 | free(line->elements); |
980 | lineInit(line); |
981 | } |
982 | |
983 | static int lineWrite(FILE * out, struct singleLine *line, |
984 | struct configFileInfo *cfi) |
985 | { |
986 | if (fprintf(out, "%s", line->indent) == -1) |
987 | return -1; |
988 | |
989 | for (int i = 0; i < line->numElements; i++) { |
990 | /* Need to handle this, because we strip the quotes from |
991 | * menuentry when read it. */ |
992 | if (line->type == LT_MENUENTRY && i == 1) { |
993 | if (!isquote(*line->elements[i].item)) { |
994 | int substring = 0; |
995 | /* If the line contains nested quotes, we did |
996 | * not strip the "interna" quotes and we must |
997 | * use the right quotes again when writing |
998 | * the updated file. */ |
999 | for (int j = i; j < line->numElements; j++) { |
1000 | if (strchr(line->elements[i].item, '\'') |
1001 | != NULL) { |
1002 | substring = 1; |
1003 | fprintf(out, "\"%s\"", |
1004 | line->elements[i].item); |
1005 | break; |
1006 | } |
1007 | } |
1008 | if (!substring) |
1009 | fprintf(out, "\'%s\'", |
1010 | line->elements[i].item); |
1011 | } else { |
1012 | fprintf(out, "%s", line->elements[i].item); |
1013 | } |
1014 | fprintf(out, "%s", line->elements[i].indent); |
1015 | |
1016 | continue; |
1017 | } |
1018 | |
1019 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
1020 | if (fputc('"', out) == EOF) |
1021 | return -1; |
1022 | |
1023 | if (fprintf(out, "%s", line->elements[i].item) == -1) |
1024 | return -1; |
1025 | if (i < line->numElements - 1 || line->type == LT_SET_VARIABLE) |
1026 | if (fprintf(out, "%s", line->elements[i].indent) == -1) |
1027 | return -1; |
1028 | } |
1029 | |
1030 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
1031 | if (fputc('"', out) == EOF) |
1032 | return -1; |
1033 | |
1034 | if (fprintf(out, "\n") == -1) |
1035 | return -1; |
1036 | |
1037 | return 0; |
1038 | } |
1039 | |
1040 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
1041 | static int getNextLine(char **bufPtr, struct singleLine *line, |
1042 | struct configFileInfo *cfi) |
1043 | { |
1044 | char *end; |
1045 | char *start = *bufPtr; |
1046 | char *chptr; |
1047 | int elementsAlloced = 0; |
1048 | struct lineElement *element; |
1049 | int first = 1; |
1050 | |
1051 | lineFree(line); |
1052 | |
1053 | end = strchr(start, '\n'); |
1054 | *end = '\0'; |
1055 | *bufPtr = end + 1; |
1056 | |
1057 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
1058 | |
1059 | line->indent = strndup(start, chptr - start); |
1060 | start = chptr; |
1061 | |
1062 | while (start < end) { |
1063 | /* we know !isspace(*start) */ |
1064 | |
1065 | if (elementsAlloced == line->numElements) { |
1066 | elementsAlloced += 5; |
1067 | line->elements = realloc(line->elements, |
1068 | sizeof(*line->elements) * |
1069 | elementsAlloced); |
1070 | } |
1071 | |
1072 | element = line->elements + line->numElements; |
1073 | |
1074 | chptr = start; |
1075 | while (*chptr && !isspace(*chptr)) { |
1076 | if (first && *chptr == '=') |
1077 | break; |
1078 | chptr++; |
1079 | } |
1080 | if (line->type == LT_UNIDENTIFIED) |
1081 | line->type = getTypeByKeyword(start, cfi); |
1082 | element->item = strndup(start, chptr - start); |
1083 | start = chptr; |
1084 | |
1085 | /* lilo actually accepts the pathological case of |
1086 | * append = " foo " */ |
1087 | if (*start == '=') |
1088 | chptr = start + 1; |
1089 | else |
1090 | chptr = start; |
1091 | |
1092 | do { |
1093 | for (; *chptr && isspace(*chptr); chptr++) ; |
1094 | if (*chptr == '=') |
1095 | chptr = chptr + 1; |
1096 | } while (isspace(*chptr)); |
1097 | |
1098 | element->indent = strndup(start, chptr - start); |
1099 | start = chptr; |
1100 | |
1101 | line->numElements++; |
1102 | first = 0; |
1103 | } |
1104 | |
1105 | if (!line->numElements) |
1106 | line->type = LT_WHITESPACE; |
1107 | else { |
1108 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
1109 | if (line->type == LT_UNKNOWN) { |
1110 | /* zipl does [title] instead of something reasonable |
1111 | * like all the other boot loaders. kind of ugly */ |
1112 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
1113 | line->type = LT_TITLE; |
1114 | } |
1115 | |
1116 | /* this is awkward, but we need to be able to handle |
1117 | * keywords that begin with a # (specifically for |
1118 | * #boot in grub.conf), but still make comments lines |
1119 | * with no elements (everything stored in the indent |
1120 | */ |
1121 | if (*line->elements[0].item == '#') { |
1122 | char *fullLine; |
1123 | int len; |
1124 | |
1125 | len = strlen(line->indent); |
1126 | for (int i = 0; i < line->numElements; i++) |
1127 | len += strlen(line->elements[i].item) + |
1128 | strlen(line->elements[i].indent); |
1129 | |
1130 | fullLine = malloc(len + 1); |
1131 | strcpy(fullLine, line->indent); |
1132 | free(line->indent); |
1133 | line->indent = fullLine; |
1134 | |
1135 | for (int i = 0; i < line->numElements; i++) { |
1136 | strcat(fullLine, |
1137 | line->elements[i].item); |
1138 | strcat(fullLine, |
1139 | line->elements[i].indent); |
1140 | free(line->elements[i].item); |
1141 | free(line->elements[i].indent); |
1142 | } |
1143 | |
1144 | line->type = LT_WHITESPACE; |
1145 | line->numElements = 0; |
1146 | } |
1147 | } else if (line->type == LT_INITRD) { |
1148 | struct keywordTypes *kw; |
1149 | |
1150 | kw = getKeywordByType(line->type, cfi); |
1151 | |
1152 | /* space isn't the only separator, we need to split |
1153 | * elements up more |
1154 | */ |
1155 | if (!isspace(kw->separatorChar)) { |
1156 | char indent[2] = ""; |
1157 | indent[0] = kw->separatorChar; |
1158 | for (int i = 1; i < line->numElements; i++) { |
1159 | char *p; |
1160 | int numNewElements; |
1161 | |
1162 | numNewElements = 0; |
1163 | p = line->elements[i].item; |
1164 | while (*p != '\0') { |
1165 | if (*p == kw->separatorChar) |
1166 | numNewElements++; |
1167 | p++; |
1168 | } |
1169 | if (line->numElements + |
1170 | numNewElements >= elementsAlloced) { |
1171 | elementsAlloced += |
1172 | numNewElements + 5; |
1173 | line->elements = |
1174 | realloc(line->elements, |
1175 | sizeof(*line-> |
1176 | elements) * |
1177 | elementsAlloced); |
1178 | } |
1179 | |
1180 | for (int j = line->numElements; j > i; |
1181 | j--) { |
1182 | line->elements[j + |
1183 | numNewElements] = |
1184 | line->elements[j]; |
1185 | } |
1186 | line->numElements += numNewElements; |
1187 | |
1188 | p = line->elements[i].item; |
1189 | while (*p != '\0') { |
1190 | |
1191 | while (*p != kw->separatorChar |
1192 | && *p != '\0') |
1193 | p++; |
1194 | if (*p == '\0') { |
1195 | break; |
1196 | } |
1197 | |
1198 | line->elements[i + 1].indent = |
1199 | line->elements[i].indent; |
1200 | line->elements[i].indent = |
1201 | strdup(indent); |
1202 | *p++ = '\0'; |
1203 | i++; |
1204 | line->elements[i].item = |
1205 | strdup(p); |
1206 | } |
1207 | } |
1208 | } |
1209 | } else if (line->type == LT_SET_VARIABLE) { |
1210 | /* and if it's a "set blah=" we need to split it |
1211 | * yet a third way to avoid rhbz# XXX FIXME :/ |
1212 | */ |
1213 | char *eq; |
1214 | int l; |
1215 | int numElements = line->numElements; |
1216 | struct lineElement *newElements; |
1217 | eq = strchr(line->elements[1].item, '='); |
1218 | if (!eq) |
1219 | return 0; |
1220 | l = eq - line->elements[1].item; |
1221 | if (eq[1] != 0) |
1222 | numElements++; |
1223 | newElements = calloc(numElements,sizeof (*newElements)); |
1224 | memcpy(&newElements[0], &line->elements[0], |
1225 | sizeof (newElements[0])); |
1226 | newElements[1].item = |
1227 | strndup(line->elements[1].item, l); |
1228 | newElements[1].indent = "="; |
1229 | *(eq++) = '\0'; |
1230 | newElements[2].item = strdup(eq); |
1231 | free(line->elements[1].item); |
1232 | if (line->elements[1].indent) |
1233 | newElements[2].indent = line->elements[1].indent; |
1234 | for (int i = 2; i < line->numElements; i++) { |
1235 | newElements[i+1].item = line->elements[i].item; |
1236 | newElements[i+1].indent = |
1237 | line->elements[i].indent; |
1238 | } |
1239 | free(line->elements); |
1240 | line->elements = newElements; |
1241 | line->numElements = numElements; |
1242 | } |
1243 | } |
1244 | |
1245 | return 0; |
1246 | } |
1247 | |
1248 | static int isnumber(const char *s) |
1249 | { |
1250 | int i; |
1251 | for (i = 0; s[i] != '\0'; i++) |
1252 | if (s[i] < '0' || s[i] > '9') |
1253 | return 0; |
1254 | return i; |
1255 | } |
1256 | |
1257 | static struct grubConfig *readConfig(const char *inName, |
1258 | struct configFileInfo *cfi) |
1259 | { |
1260 | int in; |
1261 | char *incoming = NULL, *head; |
1262 | int rc; |
1263 | int sawEntry = 0; |
1264 | int movedLine = 0; |
1265 | struct grubConfig *cfg; |
1266 | struct singleLine *last = NULL, *line, *defaultLine = NULL; |
1267 | char *end; |
1268 | struct singleEntry *entry = NULL; |
1269 | int len; |
1270 | char *buf; |
1271 | |
1272 | if (inName == NULL) { |
1273 | printf("Could not find bootloader configuration\n"); |
1274 | exit(1); |
1275 | } else if (!strcmp(inName, "-")) { |
1276 | in = 0; |
1277 | } else { |
1278 | if ((in = open(inName, O_RDONLY)) < 0) { |
1279 | fprintf(stderr, _("error opening %s for read: %s\n"), |
1280 | inName, strerror(errno)); |
1281 | return NULL; |
1282 | } |
1283 | } |
1284 | |
1285 | rc = readFile(in, &incoming); |
1286 | close(in); |
1287 | if (rc) |
1288 | return NULL; |
1289 | |
1290 | head = incoming; |
1291 | cfg = malloc(sizeof(*cfg)); |
1292 | cfg->primaryIndent = strdup(""); |
1293 | cfg->secondaryIndent = strdup("\t"); |
1294 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
1295 | cfg->cfi = cfi; |
1296 | cfg->theLines = NULL; |
1297 | cfg->entries = NULL; |
1298 | cfg->fallbackImage = 0; |
1299 | |
1300 | /* copy everything we have */ |
1301 | while (*head) { |
1302 | line = malloc(sizeof(*line)); |
1303 | lineInit(line); |
1304 | |
1305 | if (getNextLine(&head, line, cfi)) { |
1306 | free(line); |
1307 | /* XXX memory leak of everything in cfg */ |
1308 | return NULL; |
1309 | } |
1310 | |
1311 | if (!sawEntry && line->numElements) { |
1312 | free(cfg->primaryIndent); |
1313 | cfg->primaryIndent = strdup(line->indent); |
1314 | } else if (line->numElements) { |
1315 | free(cfg->secondaryIndent); |
1316 | cfg->secondaryIndent = strdup(line->indent); |
1317 | } |
1318 | |
1319 | if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) { |
1320 | sawEntry = 1; |
1321 | if (!entry) { |
1322 | cfg->entries = malloc(sizeof(*entry)); |
1323 | entry = cfg->entries; |
1324 | } else { |
1325 | entry->next = malloc(sizeof(*entry)); |
1326 | entry = entry->next; |
1327 | } |
1328 | |
1329 | entry->skip = 0; |
1330 | entry->multiboot = 0; |
1331 | entry->lines = NULL; |
1332 | entry->next = NULL; |
1333 | } |
1334 | |
1335 | if (line->type == LT_SET_VARIABLE) { |
1336 | dbgPrintf("found 'set' command (%d elements): ", |
1337 | line->numElements); |
1338 | dbgPrintf("%s", line->indent); |
1339 | for (int i = 0; i < line->numElements; i++) |
1340 | dbgPrintf("\"%s\"%s", line->elements[i].item, |
1341 | line->elements[i].indent); |
1342 | dbgPrintf("\n"); |
1343 | struct keywordTypes *kwType = |
1344 | getKeywordByType(LT_DEFAULT, cfi); |
1345 | if (kwType && line->numElements == 3 |
1346 | && !strcmp(line->elements[1].item, kwType->key) |
1347 | && !is_special_grub2_variable( |
1348 | line->elements[2].item)) { |
1349 | dbgPrintf("Line sets default config\n"); |
1350 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1351 | defaultLine = line; |
1352 | } |
1353 | } else if (iskernel(line->type)) { |
1354 | /* if by some freak chance this is multiboot and the |
1355 | * "module" lines came earlier in the template, make |
1356 | * sure to use LT_HYPER instead of LT_KERNEL now |
1357 | */ |
1358 | if (entry && entry->multiboot) |
1359 | line->type = LT_HYPER; |
1360 | |
1361 | } else if (line->type == LT_MBMODULE) { |
1362 | /* go back and fix the LT_KERNEL line to indicate |
1363 | * LT_HYPER instead, now that we know this is a |
1364 | * multiboot entry. This only applies to grub, but |
1365 | * that's the only place we should find LT_MBMODULE |
1366 | * lines anyway. |
1367 | */ |
1368 | for (struct singleLine * l = entry->lines; l; |
1369 | l = l->next) { |
1370 | if (l->type == LT_HYPER) |
1371 | break; |
1372 | else if (iskernel(l->type)) { |
1373 | l->type = LT_HYPER; |
1374 | break; |
1375 | } |
1376 | } |
1377 | entry->multiboot = 1; |
1378 | |
1379 | } else if (line->type == LT_HYPER) { |
1380 | entry->multiboot = 1; |
1381 | |
1382 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
1383 | cfg->fallbackImage = |
1384 | strtol(line->elements[1].item, &end, 10); |
1385 | if (*end) |
1386 | cfg->fallbackImage = -1; |
1387 | |
1388 | } else if ((line->type == LT_DEFAULT && cfi->defaultIsUnquoted) |
1389 | || (line->type == LT_TITLE |
1390 | && line->numElements > 1)) { |
1391 | /* make the title/default a single argument (undoing |
1392 | * our parsing) */ |
1393 | len = 0; |
1394 | for (int i = 1; i < line->numElements; i++) { |
1395 | len += strlen(line->elements[i].item); |
1396 | len += strlen(line->elements[i].indent); |
1397 | } |
1398 | buf = malloc(len + 1); |
1399 | *buf = '\0'; |
1400 | |
1401 | for (int i = 1; i < line->numElements; i++) { |
1402 | strcat(buf, line->elements[i].item); |
1403 | free(line->elements[i].item); |
1404 | |
1405 | if ((i + 1) != line->numElements) { |
1406 | strcat(buf, line->elements[i].indent); |
1407 | free(line->elements[i].indent); |
1408 | } |
1409 | } |
1410 | |
1411 | line->elements[1].indent = |
1412 | line->elements[line->numElements - 1].indent; |
1413 | line->elements[1].item = buf; |
1414 | line->numElements = 2; |
1415 | } else if (line->type == LT_MENUENTRY && line->numElements > 3) { |
1416 | /* let --remove-kernel="TITLE=what" work */ |
1417 | len = 0; |
1418 | char *extras; |
1419 | char *title; |
1420 | /* initially unseen value */ |
1421 | char quote_char = '\0'; |
1422 | |
1423 | for (int i = 1; i < line->numElements; i++) { |
1424 | len += strlen(line->elements[i].item); |
1425 | len += strlen(line->elements[i].indent); |
1426 | } |
1427 | buf = malloc(len + 1); |
1428 | *buf = '\0'; |
1429 | |
1430 | /* allocate mem for extra flags. */ |
1431 | extras = malloc(len + 1); |
1432 | *extras = '\0'; |
1433 | |
1434 | /* get title. */ |
1435 | for (int i = 0; i < line->numElements; i++) { |
1436 | if (!strcmp |
1437 | (line->elements[i].item, "menuentry")) |
1438 | continue; |
1439 | if (isquote(*line->elements[i].item) |
1440 | && quote_char == '\0') { |
1441 | /* ensure we properly pair off quotes */ |
1442 | quote_char = *line->elements[i].item; |
1443 | title = line->elements[i].item + 1; |
1444 | } else { |
1445 | title = line->elements[i].item; |
1446 | } |
1447 | |
1448 | len = strlen(title); |
1449 | if (title[len - 1] == quote_char) { |
1450 | strncat(buf, title, len - 1); |
1451 | break; |
1452 | } else { |
1453 | strcat(buf, title); |
1454 | strcat(buf, line->elements[i].indent); |
1455 | } |
1456 | } |
1457 | |
1458 | /* get extras */ |
1459 | int count = 0; |
1460 | quote_char = '\0'; |
1461 | for (int i = 0; i < line->numElements; i++) { |
1462 | if (count >= 2) { |
1463 | strcat(extras, line->elements[i].item); |
1464 | strcat(extras, |
1465 | line->elements[i].indent); |
1466 | } |
1467 | |
1468 | if (!strcmp |
1469 | (line->elements[i].item, "menuentry")) |
1470 | continue; |
1471 | |
1472 | /* count ' or ", there should be two in menuentry line. */ |
1473 | if (isquote(*line->elements[i].item) |
1474 | && quote_char == '\0') { |
1475 | /* ensure we properly pair off quotes */ |
1476 | quote_char = *line->elements[i].item; |
1477 | count++; |
1478 | } |
1479 | |
1480 | len = strlen(line->elements[i].item); |
1481 | |
1482 | if (line->elements[i].item[len - 1] == |
1483 | quote_char) |
1484 | count++; |
1485 | |
1486 | /* ok, we get the final ' or ", others are extras. */ |
1487 | } |
1488 | line->elements[1].indent = |
1489 | line->elements[line->numElements - 2].indent; |
1490 | line->elements[1].item = buf; |
1491 | line->elements[2].indent = |
1492 | line->elements[line->numElements - 2].indent; |
1493 | line->elements[2].item = extras; |
1494 | line->numElements = 3; |
1495 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
1496 | /* Strip off any " which may be present; they'll be |
1497 | * put back on write. This is one of the few (the |
1498 | * only?) places that grubby canonicalizes the output |
1499 | */ |
1500 | if (line->numElements >= 2) { |
1501 | int last, len; |
1502 | |
1503 | if (isquote(*line->elements[1].item)) |
1504 | memmove(line->elements[1].item, |
1505 | line->elements[1].item + 1, |
1506 | strlen(line->elements[1].item + |
1507 | 1) + 1); |
1508 | |
1509 | last = line->numElements - 1; |
1510 | len = strlen(line->elements[last].item) - 1; |
1511 | if (isquote(line->elements[last].item[len])) |
1512 | line->elements[last].item[len] = '\0'; |
1513 | } |
1514 | } |
1515 | |
1516 | if (line->type == LT_DEFAULT && line->numElements == 2) { |
1517 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1518 | defaultLine = line; |
1519 | } |
1520 | |
1521 | /* If we find a generic config option which should live at the |
1522 | top of the file, move it there. Old versions of grubby were |
1523 | probably responsible for putting new images in the wrong |
1524 | place in front of it anyway. */ |
1525 | if (sawEntry && line->type == LT_GENERIC) { |
1526 | struct singleLine **l = &cfg->theLines; |
1527 | struct singleLine **last_nonws = &cfg->theLines; |
1528 | while (*l) { |
1529 | if ((*l)->type != LT_WHITESPACE) |
1530 | last_nonws = &((*l)->next); |
1531 | l = &((*l)->next); |
1532 | } |
1533 | line->next = *last_nonws; |
1534 | *last_nonws = line; |
1535 | movedLine = 1; |
1536 | continue; /* without setting 'last' */ |
1537 | } |
1538 | |
1539 | /* If a second line of whitespace happens after a generic |
1540 | * option which was moved, drop it. */ |
1541 | if (movedLine && line->type == LT_WHITESPACE |
1542 | && last->type == LT_WHITESPACE) { |
1543 | lineFree(line); |
1544 | free(line); |
1545 | movedLine = 0; |
1546 | continue; |
1547 | } |
1548 | movedLine = 0; |
1549 | |
1550 | if (sawEntry) { |
1551 | if (!entry->lines) |
1552 | entry->lines = line; |
1553 | else |
1554 | last->next = line; |
1555 | dbgPrintf("readConfig added %s to %p\n", |
1556 | getKeyByType(line->type, cfi), entry); |
1557 | |
1558 | /* we could have seen this outside of an entry... if |
1559 | * so, we ignore it like any other line we don't grok |
1560 | */ |
1561 | if (line->type == LT_ENTRY_END && sawEntry) |
1562 | sawEntry = 0; |
1563 | } else { |
1564 | if (!cfg->theLines) |
1565 | cfg->theLines = line; |
1566 | else |
1567 | last->next = line; |
1568 | dbgPrintf("readConfig added %s to cfg\n", |
1569 | getKeyByType(line->type, cfi)); |
1570 | } |
1571 | |
1572 | last = line; |
1573 | } |
1574 | |
1575 | free(incoming); |
1576 | |
1577 | dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset"); |
1578 | if (defaultLine) { |
1579 | if (defaultLine->numElements > 2 && |
1580 | cfi->defaultSupportSaved && |
1581 | !strncmp(defaultLine->elements[2].item, |
1582 | "\"${saved_entry}\"", 16)) { |
1583 | cfg->cfi->defaultIsSaved = 1; |
1584 | cfg->defaultImage = DEFAULT_SAVED_GRUB2; |
1585 | if (cfg->cfi->getEnv) { |
1586 | char *defTitle = |
1587 | cfi->getEnv(cfg->cfi, "saved_entry"); |
1588 | if (defTitle) { |
1589 | int index = 0; |
1590 | if (isnumber(defTitle)) { |
1591 | index = atoi(defTitle); |
1592 | entry = |
1593 | findEntryByIndex(cfg, |
1594 | index); |
1595 | } else { |
1596 | entry = |
1597 | findEntryByTitle(cfg, |
1598 | defTitle, |
1599 | &index); |
1600 | } |
1601 | if (entry) |
1602 | cfg->defaultImage = index; |
1603 | } |
1604 | } |
1605 | } else if (cfi->defaultIsVariable) { |
1606 | if (defaultLine->numElements == 2) { |
1607 | char *value = defaultLine->elements[1].item + 8; |
1608 | while (*value && (*value == '"' || |
1609 | *value == '\'' || |
1610 | *value == ' ' || |
1611 | *value == '\t')) |
1612 | value++; |
1613 | cfg->defaultImage = strtol(value, &end, 10); |
1614 | while (*end && (*end == '"' || *end == '\'' || |
1615 | *end == ' ' || *end == '\t')) |
1616 | end++; |
1617 | if (*end) |
1618 | cfg->defaultImage = -1; |
1619 | } else if (defaultLine->numElements == 3) { |
1620 | char *value = defaultLine->elements[2].item; |
1621 | while (*value && (*value == '"' || |
1622 | *value == '\'' || |
1623 | *value == ' ' || |
1624 | *value == '\t')) |
1625 | value++; |
1626 | cfg->defaultImage = strtol(value, &end, 10); |
1627 | while (*end && (*end == '"' || *end == '\'' || |
1628 | *end == ' ' || *end == '\t')) |
1629 | end++; |
1630 | if (*end) |
1631 | cfg->defaultImage = -1; |
1632 | } |
1633 | } else if (cfi->defaultSupportSaved && |
1634 | !strncmp(defaultLine->elements[1].item, "saved", |
1635 | 5)) { |
1636 | cfg->defaultImage = DEFAULT_SAVED; |
1637 | } else if (cfi->defaultIsIndex) { |
1638 | cfg->defaultImage = |
1639 | strtol(defaultLine->elements[1].item, &end, 10); |
1640 | if (*end) |
1641 | cfg->defaultImage = -1; |
1642 | } else if (defaultLine->numElements >= 2) { |
1643 | int i = 0; |
1644 | while ((entry = findEntryByIndex(cfg, i))) { |
1645 | for (line = entry->lines; line; |
1646 | line = line->next) |
1647 | if (line->type == LT_TITLE) |
1648 | break; |
1649 | |
1650 | if (!cfi->titleBracketed) { |
1651 | if (line && (line->numElements >= 2) && |
1652 | !strcmp(defaultLine->elements[1]. |
1653 | item, |
1654 | line->elements[1].item)) |
1655 | break; |
1656 | } else if (line) { |
1657 | if (!strcmp |
1658 | (defaultLine->elements[1].item, |
1659 | extractTitle(cfg, line))) |
1660 | break; |
1661 | } |
1662 | i++; |
1663 | entry = NULL; |
1664 | } |
1665 | |
1666 | if (entry) { |
1667 | cfg->defaultImage = i; |
1668 | } else { |
1669 | cfg->defaultImage = -1; |
1670 | } |
1671 | } |
1672 | } else if (cfg->cfi->defaultIsSaved && cfg->cfi->getEnv) { |
1673 | char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry"); |
1674 | if (defTitle) { |
1675 | int index = 0; |
1676 | if (isnumber(defTitle)) { |
1677 | index = atoi(defTitle); |
1678 | entry = findEntryByIndex(cfg, index); |
1679 | } else { |
1680 | entry = findEntryByTitle(cfg, defTitle, &index); |
1681 | } |
1682 | if (entry) |
1683 | cfg->defaultImage = index; |
1684 | } |
1685 | } else { |
1686 | cfg->defaultImage = 0; |
1687 | } |
1688 | |
1689 | return cfg; |
1690 | } |
1691 | |
1692 | static void writeDefault(FILE * out, char *indent, |
1693 | char *separator, struct grubConfig *cfg) |
1694 | { |
1695 | struct singleEntry *entry; |
1696 | struct singleLine *line; |
1697 | int i; |
1698 | |
1699 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) |
1700 | return; |
1701 | |
1702 | if (cfg->defaultImage == DEFAULT_SAVED) |
1703 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
1704 | else if (cfg->cfi->defaultIsSaved) { |
1705 | fprintf(out, "%sset default=\"${saved_entry}\"\n", indent); |
1706 | if (cfg->defaultImage >= 0 && cfg->cfi->setEnv) { |
1707 | char *title; |
1708 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
1709 | line = getLineByType(LT_MENUENTRY, entry->lines); |
1710 | if (!line) |
1711 | line = getLineByType(LT_TITLE, entry->lines); |
1712 | if (line) { |
1713 | title = extractTitle(cfg, line); |
1714 | if (title) |
1715 | cfg->cfi->setEnv(cfg->cfi, |
1716 | "saved_entry", title); |
1717 | } |
1718 | } |
1719 | } else if (cfg->defaultImage > -1) { |
1720 | if (cfg->cfi->defaultIsIndex) { |
1721 | if (cfg->cfi->defaultIsVariable) { |
1722 | fprintf(out, "%sset default=\"%d\"\n", indent, |
1723 | cfg->defaultImage); |
1724 | } else { |
1725 | fprintf(out, "%sdefault%s%d\n", indent, |
1726 | separator, cfg->defaultImage); |
1727 | } |
1728 | } else { |
1729 | int image = cfg->defaultImage; |
1730 | |
1731 | entry = cfg->entries; |
1732 | while (entry && entry->skip) |
1733 | entry = entry->next; |
1734 | |
1735 | i = 0; |
1736 | while (entry && i < image) { |
1737 | entry = entry->next; |
1738 | |
1739 | while (entry && entry->skip) |
1740 | entry = entry->next; |
1741 | i++; |
1742 | } |
1743 | |
1744 | if (!entry) |
1745 | return; |
1746 | |
1747 | line = getLineByType(LT_TITLE, entry->lines); |
1748 | |
1749 | if (line && line->numElements >= 2) |
1750 | fprintf(out, "%sdefault%s%s\n", indent, |
1751 | separator, line->elements[1].item); |
1752 | else if (line && (line->numElements == 1) |
1753 | && cfg->cfi->titleBracketed) { |
1754 | char *title = extractTitle(cfg, line); |
1755 | if (title) { |
1756 | fprintf(out, "%sdefault%s%s\n", indent, |
1757 | separator, title); |
1758 | free(title); |
1759 | } |
1760 | } |
1761 | } |
1762 | } |
1763 | } |
1764 | |
1765 | static int writeConfig(struct grubConfig *cfg, char *outName, |
1766 | const char *prefix) |
1767 | { |
1768 | FILE *out; |
1769 | struct singleLine *line; |
1770 | struct singleEntry *entry; |
1771 | char *tmpOutName; |
1772 | int needs = MAIN_DEFAULT; |
1773 | struct stat sb; |
1774 | int i; |
1775 | |
1776 | if (!strcmp(outName, "-")) { |
1777 | out = stdout; |
1778 | tmpOutName = NULL; |
1779 | } else { |
1780 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
1781 | char *buf; |
1782 | int len = 256; |
1783 | int rc; |
1784 | |
1785 | /* most likely the symlink is relative, so change our |
1786 | directory to the dir of the symlink */ |
1787 | char *dir = strdupa(outName); |
1788 | rc = chdir(dirname(dir)); |
1789 | do { |
1790 | buf = alloca(len + 1); |
1791 | rc = readlink(basename(outName), buf, len); |
1792 | if (rc == len) |
1793 | len += 256; |
1794 | } while (rc == len); |
1795 | |
1796 | if (rc < 0) { |
1797 | fprintf(stderr, |
1798 | _ |
1799 | ("grubby: error readlink link %s: %s\n"), |
1800 | outName, strerror(errno)); |
1801 | return 1; |
1802 | } |
1803 | |
1804 | outName = buf; |
1805 | outName[rc] = '\0'; |
1806 | } |
1807 | |
1808 | tmpOutName = alloca(strlen(outName) + 2); |
1809 | sprintf(tmpOutName, "%s-", outName); |
1810 | out = fopen(tmpOutName, "w"); |
1811 | if (!out) { |
1812 | fprintf(stderr, _("grubby: error creating %s: %s\n"), |
1813 | tmpOutName, strerror(errno)); |
1814 | return 1; |
1815 | } |
1816 | |
1817 | if (!stat(outName, &sb)) { |
1818 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
1819 | fprintf(stderr, |
1820 | _ |
1821 | ("grubby: error setting perms on %s: %s\n"), |
1822 | tmpOutName, strerror(errno)); |
1823 | fclose(out); |
1824 | unlink(tmpOutName); |
1825 | return 1; |
1826 | } |
1827 | } |
1828 | } |
1829 | |
1830 | line = cfg->theLines; |
1831 | struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi); |
1832 | while (line) { |
1833 | if (line->type == LT_SET_VARIABLE && defaultKw && |
1834 | line->numElements == 3 && |
1835 | !strcmp(line->elements[1].item, defaultKw->key) && |
1836 | !is_special_grub2_variable(line->elements[2].item)) { |
1837 | writeDefault(out, line->indent, |
1838 | line->elements[0].indent, cfg); |
1839 | needs &= ~MAIN_DEFAULT; |
1840 | } else if (line->type == LT_DEFAULT) { |
1841 | writeDefault(out, line->indent, |
1842 | line->elements[0].indent, cfg); |
1843 | needs &= ~MAIN_DEFAULT; |
1844 | } else if (line->type == LT_FALLBACK) { |
1845 | if (cfg->fallbackImage > -1) |
1846 | fprintf(out, "%s%s%s%d\n", line->indent, |
1847 | line->elements[0].item, |
1848 | line->elements[0].indent, |
1849 | cfg->fallbackImage); |
1850 | } else { |
1851 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1852 | fprintf(stderr, |
1853 | _("grubby: error writing %s: %s\n"), |
1854 | tmpOutName, strerror(errno)); |
1855 | fclose(out); |
1856 | unlink(tmpOutName); |
1857 | return 1; |
1858 | } |
1859 | } |
1860 | |
1861 | line = line->next; |
1862 | } |
1863 | |
1864 | if (needs & MAIN_DEFAULT) { |
1865 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
1866 | needs &= ~MAIN_DEFAULT; |
1867 | } |
1868 | |
1869 | i = 0; |
1870 | while ((entry = findEntryByIndex(cfg, i++))) { |
1871 | if (entry->skip) |
1872 | continue; |
1873 | |
1874 | line = entry->lines; |
1875 | while (line) { |
1876 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1877 | fprintf(stderr, |
1878 | _("grubby: error writing %s: %s\n"), |
1879 | tmpOutName, strerror(errno)); |
1880 | fclose(out); |
1881 | unlink(tmpOutName); |
1882 | return 1; |
1883 | } |
1884 | line = line->next; |
1885 | } |
1886 | } |
1887 | |
1888 | if (tmpOutName) { |
1889 | if (rename(tmpOutName, outName)) { |
1890 | fprintf(stderr, |
1891 | _("grubby: error moving %s to %s: %s\n"), |
1892 | tmpOutName, outName, strerror(errno)); |
1893 | unlink(outName); |
1894 | return 1; |
1895 | } |
1896 | } |
1897 | |
1898 | return 0; |
1899 | } |
1900 | |
1901 | static int numEntries(struct grubConfig *cfg) |
1902 | { |
1903 | int i = 0; |
1904 | struct singleEntry *entry; |
1905 | |
1906 | entry = cfg->entries; |
1907 | while (entry) { |
1908 | if (!entry->skip) |
1909 | i++; |
1910 | entry = entry->next; |
1911 | } |
1912 | return i; |
1913 | } |
1914 | |
1915 | static char *findDiskForRoot() |
1916 | { |
1917 | int fd; |
1918 | char buf[65536]; |
1919 | char *devname; |
1920 | char *chptr; |
1921 | int rc; |
1922 | |
1923 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { |
1924 | fprintf(stderr, "grubby: failed to open %s: %s\n", |
1925 | _PATH_MOUNTED, strerror(errno)); |
1926 | return NULL; |
1927 | } |
1928 | |
1929 | rc = read(fd, buf, sizeof(buf) - 1); |
1930 | if (rc <= 0) { |
1931 | fprintf(stderr, "grubby: failed to read %s: %s\n", |
1932 | _PATH_MOUNTED, strerror(errno)); |
1933 | close(fd); |
1934 | return NULL; |
1935 | } |
1936 | close(fd); |
1937 | buf[rc] = '\0'; |
1938 | chptr = buf; |
1939 | |
1940 | char *foundanswer = NULL; |
1941 | |
1942 | while (chptr && chptr != buf + rc) { |
1943 | devname = chptr; |
1944 | |
1945 | /* |
1946 | * The first column of a mtab entry is the device, but if the |
1947 | * entry is a special device it won't start with /, so move |
1948 | * on to the next line. |
1949 | */ |
1950 | if (*devname != '/') { |
1951 | chptr = strchr(chptr, '\n'); |
1952 | if (chptr) |
1953 | chptr++; |
1954 | continue; |
1955 | } |
1956 | |
1957 | /* Seek to the next space */ |
1958 | chptr = strchr(chptr, ' '); |
1959 | if (!chptr) { |
1960 | fprintf(stderr, "grubby: error parsing %s: %s\n", |
1961 | _PATH_MOUNTED, strerror(errno)); |
1962 | return NULL; |
1963 | } |
1964 | |
1965 | /* |
1966 | * The second column of a mtab entry is the mount point, we |
1967 | * are looking for '/' obviously. |
1968 | */ |
1969 | if (*(++chptr) == '/' && *(++chptr) == ' ') { |
1970 | /* remember the last / entry in mtab */ |
1971 | foundanswer = devname; |
1972 | } |
1973 | |
1974 | /* Next line */ |
1975 | chptr = strchr(chptr, '\n'); |
1976 | if (chptr) |
1977 | chptr++; |
1978 | } |
1979 | |
1980 | /* Return the last / entry found */ |
1981 | if (foundanswer) { |
1982 | chptr = strchr(foundanswer, ' '); |
1983 | *chptr = '\0'; |
1984 | return strdup(foundanswer); |
1985 | } |
1986 | |
1987 | return NULL; |
1988 | } |
1989 | |
1990 | void printEntry(struct singleEntry *entry, FILE * f) |
1991 | { |
1992 | int i; |
1993 | struct singleLine *line; |
1994 | |
1995 | for (line = entry->lines; line; line = line->next) { |
1996 | log_message(f, "DBG: %s", line->indent); |
1997 | for (i = 0; i < line->numElements; i++) { |
1998 | /* Need to handle this, because we strip the quotes from |
1999 | * menuentry when read it. */ |
2000 | if (line->type == LT_MENUENTRY && i == 1) { |
2001 | if (!isquote(*line->elements[i].item)) |
2002 | log_message(f, "\'%s\'", |
2003 | line->elements[i].item); |
2004 | else |
2005 | log_message(f, "%s", |
2006 | line->elements[i].item); |
2007 | log_message(f, "%s", line->elements[i].indent); |
2008 | |
2009 | continue; |
2010 | } |
2011 | |
2012 | log_message(f, "%s%s", |
2013 | line->elements[i].item, |
2014 | line->elements[i].indent); |
2015 | } |
2016 | log_message(f, "\n"); |
2017 | } |
2018 | } |
2019 | |
2020 | void notSuitablePrintf(struct singleEntry *entry, int okay, const char *fmt, |
2021 | ...) |
2022 | { |
2023 | static int once; |
2024 | va_list argp, argq; |
2025 | |
2026 | va_start(argp, fmt); |
2027 | |
2028 | va_copy(argq, argp); |
2029 | if (!once) { |
2030 | log_time(NULL); |
2031 | log_message(NULL, "command line: %s\n", saved_command_line); |
2032 | } |
2033 | log_message(NULL, "DBG: Image entry %s: ", |
2034 | okay ? "succeeded" : "failed"); |
2035 | log_vmessage(NULL, fmt, argq); |
2036 | |
2037 | printEntry(entry, NULL); |
2038 | va_end(argq); |
2039 | |
2040 | if (!debug) { |
2041 | once = 1; |
2042 | va_end(argp); |
2043 | return; |
2044 | } |
2045 | |
2046 | if (okay) { |
2047 | va_end(argp); |
2048 | return; |
2049 | } |
2050 | |
2051 | if (!once) |
2052 | log_message(stderr, "DBG: command line: %s\n", |
2053 | saved_command_line); |
2054 | once = 1; |
2055 | fprintf(stderr, "DBG: Image entry failed: "); |
2056 | vfprintf(stderr, fmt, argp); |
2057 | printEntry(entry, stderr); |
2058 | va_end(argp); |
2059 | } |
2060 | |
2061 | #define beginswith(s, c) ((s) && (s)[0] == (c)) |
2062 | |
2063 | static int endswith(const char *s, char c) |
2064 | { |
2065 | int slen; |
2066 | |
2067 | if (!s || !s[0]) |
2068 | return 0; |
2069 | slen = strlen(s) - 1; |
2070 | |
2071 | return s[slen] == c; |
2072 | } |
2073 | |
2074 | int suitableImage(struct singleEntry *entry, const char *bootPrefix, |
2075 | int skipRemoved, int flags) |
2076 | { |
2077 | struct singleLine *line; |
2078 | char *fullName; |
2079 | int i; |
2080 | char *dev; |
2081 | char *rootspec; |
2082 | char *rootdev; |
2083 | |
2084 | if (skipRemoved && entry->skip) { |
2085 | notSuitablePrintf(entry, 0, "marked to skip\n"); |
2086 | return 0; |
2087 | } |
2088 | |
2089 | line = |
2090 | getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16, |
2091 | entry->lines); |
2092 | if (!line) { |
2093 | notSuitablePrintf(entry, 0, "no line found\n"); |
2094 | return 0; |
2095 | } |
2096 | if (line->numElements < 2) { |
2097 | notSuitablePrintf(entry, 0, "line has only %d elements\n", |
2098 | line->numElements); |
2099 | return 0; |
2100 | } |
2101 | |
2102 | if (flags & GRUBBY_BADIMAGE_OKAY) { |
2103 | notSuitablePrintf(entry, 1, "\n"); |
2104 | return 1; |
2105 | } |
2106 | |
2107 | fullName = alloca(strlen(bootPrefix) + |
2108 | strlen(line->elements[1].item) + 1); |
2109 | rootspec = getRootSpecifier(line->elements[1].item); |
2110 | int rootspec_offset = rootspec ? strlen(rootspec) : 0; |
2111 | int hasslash = endswith(bootPrefix, '/') || |
2112 | beginswith(line->elements[1].item + rootspec_offset, '/'); |
2113 | sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/", |
2114 | line->elements[1].item + rootspec_offset); |
2115 | if (access(fullName, R_OK)) { |
2116 | notSuitablePrintf(entry, 0, "access to %s failed\n", fullName); |
2117 | return 0; |
2118 | } |
2119 | for (i = 2; i < line->numElements; i++) |
2120 | if (!strncasecmp(line->elements[i].item, "root=", 5)) |
2121 | break; |
2122 | if (i < line->numElements) { |
2123 | dev = line->elements[i].item + 5; |
2124 | } else { |
2125 | /* look for a lilo style LT_ROOT line */ |
2126 | line = getLineByType(LT_ROOT, entry->lines); |
2127 | |
2128 | if (line && line->numElements >= 2) { |
2129 | dev = line->elements[1].item; |
2130 | } else { |
2131 | /* didn't succeed in finding a LT_ROOT, let's try |
2132 | * LT_KERNELARGS. grub+multiboot uses LT_MBMODULE |
2133 | * for the args, so check that too. |
2134 | */ |
2135 | line = |
2136 | getLineByType(LT_KERNELARGS | LT_MBMODULE, |
2137 | entry->lines); |
2138 | |
2139 | /* failed to find one */ |
2140 | if (!line) { |
2141 | notSuitablePrintf(entry, 0, "no line found\n"); |
2142 | return 0; |
2143 | } |
2144 | |
2145 | for (i = 1; i < line->numElements; i++) |
2146 | if (!strncasecmp |
2147 | (line->elements[i].item, "root=", 5)) |
2148 | break; |
2149 | if (i < line->numElements) |
2150 | dev = line->elements[i].item + 5; |
2151 | else { |
2152 | notSuitablePrintf(entry, 0, |
2153 | "no root= entry found\n"); |
2154 | /* it failed too... can't find root= */ |
2155 | return 0; |
2156 | } |
2157 | } |
2158 | } |
2159 | |
2160 | dev = getpathbyspec(dev); |
2161 | if (!getpathbyspec(dev)) { |
2162 | notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n", |
2163 | dev); |
2164 | return 0; |
2165 | } else |
2166 | dev = getpathbyspec(dev); |
2167 | |
2168 | rootdev = findDiskForRoot(); |
2169 | if (!rootdev) { |
2170 | notSuitablePrintf(entry, 0, "can't find root device\n"); |
2171 | return 0; |
2172 | } |
2173 | |
2174 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
2175 | notSuitablePrintf(entry, 0, |
2176 | "uuid missing: rootdev %s, dev %s\n", |
2177 | getuuidbydev(rootdev), getuuidbydev(dev)); |
2178 | free(rootdev); |
2179 | return 0; |
2180 | } |
2181 | |
2182 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
2183 | notSuitablePrintf(entry, 0, |
2184 | "uuid mismatch: rootdev %s, dev %s\n", |
2185 | getuuidbydev(rootdev), getuuidbydev(dev)); |
2186 | free(rootdev); |
2187 | return 0; |
2188 | } |
2189 | |
2190 | free(rootdev); |
2191 | notSuitablePrintf(entry, 1, "\n"); |
2192 | |
2193 | return 1; |
2194 | } |
2195 | |
2196 | /* returns the first match on or after the one pointed to by index (if index |
2197 | is not NULL) which is not marked as skip */ |
2198 | struct singleEntry *findEntryByPath(struct grubConfig *config, |
2199 | const char *kernel, const char *prefix, |
2200 | int *index) |
2201 | { |
2202 | struct singleEntry *entry = NULL; |
2203 | struct singleLine *line; |
2204 | int i; |
2205 | char *chptr; |
2206 | char *rootspec = NULL; |
2207 | enum lineType_e checkType = LT_KERNEL; |
2208 | |
2209 | if (isdigit(*kernel)) { |
2210 | int *indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
2211 | |
2212 | i = 0; |
2213 | indexVars[i] = strtol(kernel, &chptr, 10); |
2214 | while (*chptr == ',') { |
2215 | i++; |
2216 | kernel = chptr + 1; |
2217 | indexVars[i] = strtol(kernel, &chptr, 10); |
2218 | } |
2219 | |
2220 | if (*chptr) { |
2221 | /* can't parse it, bail */ |
2222 | return NULL; |
2223 | } |
2224 | |
2225 | indexVars[i + 1] = -1; |
2226 | |
2227 | i = 0; |
2228 | if (index) { |
2229 | while (i < *index) { |
2230 | i++; |
2231 | if (indexVars[i] == -1) |
2232 | return NULL; |
2233 | } |
2234 | } |
2235 | |
2236 | entry = findEntryByIndex(config, indexVars[i]); |
2237 | if (!entry) |
2238 | return NULL; |
2239 | |
2240 | line = |
2241 | getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | |
2242 | LT_KERNEL_16, entry->lines); |
2243 | if (!line) |
2244 | return NULL; |
2245 | |
2246 | if (index) |
2247 | *index = indexVars[i]; |
2248 | return entry; |
2249 | } |
2250 | |
2251 | if (!strcmp(kernel, "DEFAULT")) { |
2252 | if (index && *index > config->defaultImage) { |
2253 | entry = NULL; |
2254 | } else { |
2255 | entry = findEntryByIndex(config, config->defaultImage); |
2256 | if (entry && entry->skip) |
2257 | entry = NULL; |
2258 | else if (index) |
2259 | *index = config->defaultImage; |
2260 | } |
2261 | } else if (!strcmp(kernel, "ALL")) { |
2262 | if (index) |
2263 | i = *index; |
2264 | else |
2265 | i = 0; |
2266 | |
2267 | while ((entry = findEntryByIndex(config, i))) { |
2268 | if (!entry->skip) |
2269 | break; |
2270 | i++; |
2271 | } |
2272 | |
2273 | if (entry && index) |
2274 | *index = i; |
2275 | } else { |
2276 | if (index) |
2277 | i = *index; |
2278 | else |
2279 | i = 0; |
2280 | |
2281 | if (!strncmp(kernel, "TITLE=", 6)) { |
2282 | prefix = ""; |
2283 | checkType = LT_TITLE | LT_MENUENTRY; |
2284 | kernel += 6; |
2285 | } |
2286 | |
2287 | for (entry = findEntryByIndex(config, i); entry; |
2288 | entry = entry->next, i++) { |
2289 | if (entry->skip) |
2290 | continue; |
2291 | |
2292 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", |
2293 | checkType, kernel, entry); |
2294 | |
2295 | /* check all the lines matching checkType */ |
2296 | for (line = entry->lines; line; line = line->next) { |
2297 | enum lineType_e ct = checkType; |
2298 | if (entry->multiboot && checkType == LT_KERNEL) |
2299 | ct = LT_KERNEL | LT_KERNEL_EFI | |
2300 | LT_MBMODULE | LT_HYPER | |
2301 | LT_KERNEL_16; |
2302 | else if (checkType & LT_KERNEL) |
2303 | ct = checkType | LT_KERNEL_EFI | |
2304 | LT_KERNEL_16; |
2305 | line = getLineByType(ct, line); |
2306 | if (!line) |
2307 | break; /* not found in this entry */ |
2308 | |
2309 | if (line && line->type != LT_MENUENTRY && |
2310 | line->numElements >= 2) { |
2311 | rootspec = |
2312 | getRootSpecifier(line->elements[1]. |
2313 | item); |
2314 | if (!strcmp |
2315 | (line->elements[1].item + |
2316 | ((rootspec != |
2317 | NULL) ? strlen(rootspec) : 0), |
2318 | kernel + strlen(prefix))) |
2319 | break; |
2320 | } |
2321 | if (line->type == LT_MENUENTRY && |
2322 | !strcmp(line->elements[1].item, kernel)) |
2323 | break; |
2324 | } |
2325 | |
2326 | /* make sure this entry has a kernel identifier; this skips |
2327 | * non-Linux boot entries (could find netbsd etc, though, which is |
2328 | * unfortunate) |
2329 | */ |
2330 | if (line |
2331 | && getLineByType(LT_KERNEL | LT_HYPER | |
2332 | LT_KERNEL_EFI | LT_KERNEL_16, |
2333 | entry->lines)) |
2334 | break; /* found 'im! */ |
2335 | } |
2336 | |
2337 | if (index) |
2338 | *index = i; |
2339 | } |
2340 | |
2341 | return entry; |
2342 | } |
2343 | |
2344 | struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title, |
2345 | int *index) |
2346 | { |
2347 | struct singleEntry *entry; |
2348 | struct singleLine *line; |
2349 | int i; |
2350 | char *newtitle; |
2351 | |
2352 | for (i = 0, entry = cfg->entries; entry; entry = entry->next, i++) { |
2353 | if (index && i < *index) |
2354 | continue; |
2355 | line = getLineByType(LT_TITLE, entry->lines); |
2356 | if (!line) |
2357 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2358 | if (!line) |
2359 | continue; |
2360 | newtitle = grub2ExtractTitle(line); |
2361 | if (!newtitle) |
2362 | continue; |
2363 | if (!strcmp(title, newtitle)) |
2364 | break; |
2365 | } |
2366 | |
2367 | if (!entry) |
2368 | return NULL; |
2369 | |
2370 | if (index) |
2371 | *index = i; |
2372 | return entry; |
2373 | } |
2374 | |
2375 | struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index) |
2376 | { |
2377 | struct singleEntry *entry; |
2378 | |
2379 | entry = cfg->entries; |
2380 | while (index && entry) { |
2381 | entry = entry->next; |
2382 | index--; |
2383 | } |
2384 | |
2385 | return entry; |
2386 | } |
2387 | |
2388 | /* Find a good template to use for the new kernel. An entry is |
2389 | * good if the kernel and mkinitrd exist (even if the entry |
2390 | * is going to be removed). Try and use the default entry, but |
2391 | * if that doesn't work just take the first. If we can't find one, |
2392 | * bail. */ |
2393 | struct singleEntry *findTemplate(struct grubConfig *cfg, const char *prefix, |
2394 | int *indexPtr, int skipRemoved, int flags) |
2395 | { |
2396 | struct singleEntry *entry, *entry2; |
2397 | int index; |
2398 | |
2399 | if (cfg->cfi->defaultIsSaved) { |
2400 | if (cfg->cfi->getEnv) { |
2401 | char *defTitle = |
2402 | cfg->cfi->getEnv(cfg->cfi, "saved_entry"); |
2403 | if (defTitle) { |
2404 | int index = 0; |
2405 | if (isnumber(defTitle)) { |
2406 | index = atoi(defTitle); |
2407 | entry = findEntryByIndex(cfg, index); |
2408 | } else { |
2409 | entry = |
2410 | findEntryByTitle(cfg, defTitle, |
2411 | &index); |
2412 | } |
2413 | if (entry |
2414 | && suitableImage(entry, prefix, skipRemoved, |
2415 | flags)) { |
2416 | cfg->defaultImage = index; |
2417 | if (indexPtr) |
2418 | *indexPtr = index; |
2419 | return entry; |
2420 | } |
2421 | } |
2422 | } |
2423 | } else if (cfg->defaultImage > -1) { |
2424 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
2425 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
2426 | if (indexPtr) |
2427 | *indexPtr = cfg->defaultImage; |
2428 | return entry; |
2429 | } |
2430 | } |
2431 | |
2432 | index = 0; |
2433 | while ((entry = findEntryByIndex(cfg, index))) { |
2434 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
2435 | int j; |
2436 | for (j = 0; j < index; j++) { |
2437 | entry2 = findEntryByIndex(cfg, j); |
2438 | if (entry2->skip) |
2439 | index--; |
2440 | } |
2441 | if (indexPtr) |
2442 | *indexPtr = index; |
2443 | |
2444 | return entry; |
2445 | } |
2446 | |
2447 | index++; |
2448 | } |
2449 | |
2450 | fprintf(stderr, |
2451 | _("grubby fatal error: unable to find a suitable template\n")); |
2452 | |
2453 | return NULL; |
2454 | } |
2455 | |
2456 | char *findBootPrefix(void) |
2457 | { |
2458 | struct stat sb, sb2; |
2459 | |
2460 | stat("/", &sb); |
2461 | #ifdef __ia64__ |
2462 | stat("/boot/efi/EFI/redhat/", &sb2); |
2463 | #else |
2464 | stat("/boot", &sb2); |
2465 | #endif |
2466 | |
2467 | if (sb.st_dev == sb2.st_dev) |
2468 | return strdup(""); |
2469 | |
2470 | #ifdef __ia64__ |
2471 | return strdup("/boot/efi/EFI/redhat/"); |
2472 | #else |
2473 | return strdup("/boot"); |
2474 | #endif |
2475 | } |
2476 | |
2477 | void markRemovedImage(struct grubConfig *cfg, const char *image, |
2478 | const char *prefix) |
2479 | { |
2480 | struct singleEntry *entry; |
2481 | |
2482 | if (!image) |
2483 | return; |
2484 | |
2485 | /* check and see if we're removing the default image */ |
2486 | if (isdigit(*image)) { |
2487 | entry = findEntryByPath(cfg, image, prefix, NULL); |
2488 | if (entry) |
2489 | entry->skip = 1; |
2490 | return; |
2491 | } |
2492 | |
2493 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
2494 | entry->skip = 1; |
2495 | } |
2496 | |
2497 | void setDefaultImage(struct grubConfig *config, int hasNew, |
2498 | const char *defaultKernelPath, int newIsDefault, |
2499 | const char *prefix, int flags, int index) |
2500 | { |
2501 | struct singleEntry *entry, *entry2, *newDefault; |
2502 | int i, j; |
2503 | |
2504 | if (newIsDefault) { |
2505 | config->defaultImage = 0; |
2506 | return; |
2507 | } else if ((index >= 0) && config->cfi->defaultIsIndex) { |
2508 | if (findEntryByIndex(config, index)) |
2509 | config->defaultImage = index; |
2510 | else |
2511 | config->defaultImage = -1; |
2512 | return; |
2513 | } else if (defaultKernelPath) { |
2514 | i = 0; |
2515 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { |
2516 | config->defaultImage = i; |
2517 | } else { |
2518 | config->defaultImage = -1; |
2519 | return; |
2520 | } |
2521 | } |
2522 | |
2523 | /* defaultImage now points to what we'd like to use, but before any |
2524 | * order changes */ |
2525 | if ((config->defaultImage == DEFAULT_SAVED) || |
2526 | (config->defaultImage == DEFAULT_SAVED_GRUB2)) |
2527 | /* default is set to saved, we don't want to change it */ |
2528 | return; |
2529 | |
2530 | if (config->defaultImage > -1) |
2531 | entry = findEntryByIndex(config, config->defaultImage); |
2532 | else |
2533 | entry = NULL; |
2534 | |
2535 | if (entry && !entry->skip) { |
2536 | /* we can preserve the default */ |
2537 | if (hasNew) |
2538 | config->defaultImage++; |
2539 | |
2540 | /* count the number of entries erased before this one */ |
2541 | for (j = 0; j < config->defaultImage; j++) { |
2542 | entry2 = findEntryByIndex(config, j); |
2543 | if (entry2->skip) |
2544 | config->defaultImage--; |
2545 | } |
2546 | } else if (hasNew) { |
2547 | config->defaultImage = 0; |
2548 | } else { |
2549 | /* Either we just erased the default (or the default line was |
2550 | * bad to begin with) and didn't put a new one in. We'll use |
2551 | * the first valid image. */ |
2552 | newDefault = |
2553 | findTemplate(config, prefix, &config->defaultImage, 1, |
2554 | flags); |
2555 | if (!newDefault) |
2556 | config->defaultImage = -1; |
2557 | } |
2558 | } |
2559 | |
2560 | void setFallbackImage(struct grubConfig *config, int hasNew) |
2561 | { |
2562 | struct singleEntry *entry, *entry2; |
2563 | int j; |
2564 | |
2565 | if (config->fallbackImage == -1) |
2566 | return; |
2567 | |
2568 | entry = findEntryByIndex(config, config->fallbackImage); |
2569 | if (!entry || entry->skip) { |
2570 | config->fallbackImage = -1; |
2571 | return; |
2572 | } |
2573 | |
2574 | if (hasNew) |
2575 | config->fallbackImage++; |
2576 | |
2577 | /* count the number of entries erased before this one */ |
2578 | for (j = 0; j < config->fallbackImage; j++) { |
2579 | entry2 = findEntryByIndex(config, j); |
2580 | if (entry2->skip) |
2581 | config->fallbackImage--; |
2582 | } |
2583 | } |
2584 | |
2585 | void displayEntry(struct singleEntry *entry, const char *prefix, int index) |
2586 | { |
2587 | struct singleLine *line; |
2588 | char *root = NULL; |
2589 | int i; |
2590 | int j; |
2591 | |
2592 | printf("index=%d\n", index); |
2593 | |
2594 | line = |
2595 | getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16, |
2596 | entry->lines); |
2597 | if (!line) { |
2598 | printf("non linux entry\n"); |
2599 | return; |
2600 | } |
2601 | |
2602 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2603 | printf("kernel=%s\n", line->elements[1].item); |
2604 | else |
2605 | printf("kernel=%s%s\n", prefix, line->elements[1].item); |
2606 | |
2607 | if (line->numElements >= 3) { |
2608 | printf("args=\""); |
2609 | i = 2; |
2610 | while (i < line->numElements) { |
2611 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
2612 | root = line->elements[i].item + 5; |
2613 | } else { |
2614 | printf("%s%s", line->elements[i].item, |
2615 | line->elements[i].indent); |
2616 | } |
2617 | |
2618 | i++; |
2619 | } |
2620 | printf("\"\n"); |
2621 | } else { |
2622 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2623 | if (line) { |
2624 | char *s; |
2625 | |
2626 | printf("args=\""); |
2627 | i = 1; |
2628 | while (i < line->numElements) { |
2629 | if (!strncmp |
2630 | (line->elements[i].item, "root=", 5)) { |
2631 | root = line->elements[i].item + 5; |
2632 | } else { |
2633 | s = line->elements[i].item; |
2634 | |
2635 | printf("%s%s", s, |
2636 | line->elements[i].indent); |
2637 | } |
2638 | |
2639 | i++; |
2640 | } |
2641 | |
2642 | s = line->elements[i - 1].indent; |
2643 | printf("\"\n"); |
2644 | } |
2645 | } |
2646 | |
2647 | if (!root) { |
2648 | line = getLineByType(LT_ROOT, entry->lines); |
2649 | if (line && line->numElements >= 2) |
2650 | root = line->elements[1].item; |
2651 | } |
2652 | |
2653 | if (root) { |
2654 | char *s = alloca(strlen(root) + 1); |
2655 | |
2656 | strcpy(s, root); |
2657 | if (s[strlen(s) - 1] == '"') |
2658 | s[strlen(s) - 1] = '\0'; |
2659 | /* make sure the root doesn't have a trailing " */ |
2660 | printf("root=%s\n", s); |
2661 | } |
2662 | |
2663 | line = |
2664 | getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16, |
2665 | entry->lines); |
2666 | |
2667 | if (line && line->numElements >= 2) { |
2668 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2669 | printf("initrd="); |
2670 | else |
2671 | printf("initrd=%s", prefix); |
2672 | |
2673 | for (i = 1; i < line->numElements; i++) |
2674 | printf("%s%s", line->elements[i].item, |
2675 | line->elements[i].indent); |
2676 | printf("\n"); |
2677 | } |
2678 | |
2679 | line = getLineByType(LT_TITLE, entry->lines); |
2680 | if (line) { |
2681 | printf("title=%s\n", line->elements[1].item); |
2682 | } else { |
2683 | char *title; |
2684 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2685 | if (line) { |
2686 | title = grub2ExtractTitle(line); |
2687 | if (title) |
2688 | printf("title=%s\n", title); |
2689 | } |
2690 | } |
2691 | |
2692 | for (j = 0, line = entry->lines; line; line = line->next) { |
2693 | if ((line->type & LT_MBMODULE) && line->numElements >= 2) { |
2694 | if (!strncmp |
2695 | (prefix, line->elements[1].item, strlen(prefix))) |
2696 | printf("mbmodule%d=", j); |
2697 | else |
2698 | printf("mbmodule%d=%s", j, prefix); |
2699 | |
2700 | for (i = 1; i < line->numElements; i++) |
2701 | printf("%s%s", line->elements[i].item, |
2702 | line->elements[i].indent); |
2703 | printf("\n"); |
2704 | j++; |
2705 | } |
2706 | } |
2707 | } |
2708 | |
2709 | int isSuseSystem(void) |
2710 | { |
2711 | const char *path; |
2712 | const static char default_path[] = "/etc/SuSE-release"; |
2713 | |
2714 | if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL) |
2715 | path = default_path; |
2716 | |
2717 | if (!access(path, R_OK)) |
2718 | return 1; |
2719 | return 0; |
2720 | } |
2721 | |
2722 | int isSuseGrubConf(const char *path) |
2723 | { |
2724 | FILE *grubConf; |
2725 | char *line = NULL; |
2726 | size_t len = 0, res = 0; |
2727 | |
2728 | grubConf = fopen(path, "r"); |
2729 | if (!grubConf) { |
2730 | dbgPrintf("Could not open SuSE configuration file '%s'\n", |
2731 | path); |
2732 | return 0; |
2733 | } |
2734 | |
2735 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2736 | if (!strncmp(line, "setup", 5)) { |
2737 | fclose(grubConf); |
2738 | free(line); |
2739 | return 1; |
2740 | } |
2741 | } |
2742 | |
2743 | dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n", |
2744 | path); |
2745 | |
2746 | fclose(grubConf); |
2747 | free(line); |
2748 | return 0; |
2749 | } |
2750 | |
2751 | int suseGrubConfGetLba(const char *path, int *lbaPtr) |
2752 | { |
2753 | FILE *grubConf; |
2754 | char *line = NULL; |
2755 | size_t res = 0, len = 0; |
2756 | |
2757 | if (!path) |
2758 | return 1; |
2759 | if (!lbaPtr) |
2760 | return 1; |
2761 | |
2762 | grubConf = fopen(path, "r"); |
2763 | if (!grubConf) |
2764 | return 1; |
2765 | |
2766 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2767 | if (line[res - 1] == '\n') |
2768 | line[res - 1] = '\0'; |
2769 | else if (len > res) |
2770 | line[res] = '\0'; |
2771 | else { |
2772 | line = realloc(line, res + 1); |
2773 | line[res] = '\0'; |
2774 | } |
2775 | |
2776 | if (!strncmp(line, "setup", 5)) { |
2777 | if (strstr(line, "--force-lba")) { |
2778 | *lbaPtr = 1; |
2779 | } else { |
2780 | *lbaPtr = 0; |
2781 | } |
2782 | dbgPrintf("lba: %i\n", *lbaPtr); |
2783 | break; |
2784 | } |
2785 | } |
2786 | |
2787 | free(line); |
2788 | fclose(grubConf); |
2789 | return 0; |
2790 | } |
2791 | |
2792 | int suseGrubConfGetInstallDevice(const char *path, char **devicePtr) |
2793 | { |
2794 | FILE *grubConf; |
2795 | char *line = NULL; |
2796 | size_t res = 0, len = 0; |
2797 | char *lastParamPtr = NULL; |
2798 | char *secLastParamPtr = NULL; |
2799 | char installDeviceNumber = '\0'; |
2800 | char *bounds = NULL; |
2801 | |
2802 | if (!path) |
2803 | return 1; |
2804 | if (!devicePtr) |
2805 | return 1; |
2806 | |
2807 | grubConf = fopen(path, "r"); |
2808 | if (!grubConf) |
2809 | return 1; |
2810 | |
2811 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2812 | if (strncmp(line, "setup", 5)) |
2813 | continue; |
2814 | |
2815 | if (line[res - 1] == '\n') |
2816 | line[res - 1] = '\0'; |
2817 | else if (len > res) |
2818 | line[res] = '\0'; |
2819 | else { |
2820 | line = realloc(line, res + 1); |
2821 | line[res] = '\0'; |
2822 | } |
2823 | |
2824 | lastParamPtr = bounds = line + res; |
2825 | |
2826 | /* Last parameter in grub may be an optional IMAGE_DEVICE */ |
2827 | while (!isspace(*lastParamPtr)) |
2828 | lastParamPtr--; |
2829 | lastParamPtr++; |
2830 | |
2831 | secLastParamPtr = lastParamPtr - 2; |
2832 | dbgPrintf("lastParamPtr: %s\n", lastParamPtr); |
2833 | |
2834 | if (lastParamPtr + 3 > bounds) { |
2835 | dbgPrintf("lastParamPtr going over boundary"); |
2836 | fclose(grubConf); |
2837 | free(line); |
2838 | return 1; |
2839 | } |
2840 | if (!strncmp(lastParamPtr, "(hd", 3)) |
2841 | lastParamPtr += 3; |
2842 | dbgPrintf("lastParamPtr: %c\n", *lastParamPtr); |
2843 | |
2844 | /* |
2845 | * Second last parameter will decide wether last parameter is |
2846 | * an IMAGE_DEVICE or INSTALL_DEVICE |
2847 | */ |
2848 | while (!isspace(*secLastParamPtr)) |
2849 | secLastParamPtr--; |
2850 | secLastParamPtr++; |
2851 | |
2852 | if (secLastParamPtr + 3 > bounds) { |
2853 | dbgPrintf("secLastParamPtr going over boundary"); |
2854 | fclose(grubConf); |
2855 | free(line); |
2856 | return 1; |
2857 | } |
2858 | dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr); |
2859 | if (!strncmp(secLastParamPtr, "(hd", 3)) { |
2860 | secLastParamPtr += 3; |
2861 | dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr); |
2862 | installDeviceNumber = *secLastParamPtr; |
2863 | } else { |
2864 | installDeviceNumber = *lastParamPtr; |
2865 | } |
2866 | |
2867 | *devicePtr = malloc(6); |
2868 | snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber); |
2869 | dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber); |
2870 | fclose(grubConf); |
2871 | free(line); |
2872 | return 0; |
2873 | } |
2874 | |
2875 | free(line); |
2876 | fclose(grubConf); |
2877 | return 1; |
2878 | } |
2879 | |
2880 | int grubGetBootFromDeviceMap(const char *device, char **bootPtr) |
2881 | { |
2882 | FILE *deviceMap; |
2883 | char *line = NULL; |
2884 | size_t res = 0, len = 0; |
2885 | char *devicePtr; |
2886 | char *bounds = NULL; |
2887 | const char *path; |
2888 | const static char default_path[] = "/boot/grub/device.map"; |
2889 | |
2890 | if (!device) |
2891 | return 1; |
2892 | if (!bootPtr) |
2893 | return 1; |
2894 | |
2895 | if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL) |
2896 | path = default_path; |
2897 | |
2898 | dbgPrintf("opening grub device.map file from: %s\n", path); |
2899 | deviceMap = fopen(path, "r"); |
2900 | if (!deviceMap) |
2901 | return 1; |
2902 | |
2903 | while ((res = getline(&line, &len, deviceMap)) != -1) { |
2904 | if (!strncmp(line, "#", 1)) |
2905 | continue; |
2906 | |
2907 | if (line[res - 1] == '\n') |
2908 | line[res - 1] = '\0'; |
2909 | else if (len > res) |
2910 | line[res] = '\0'; |
2911 | else { |
2912 | line = realloc(line, res + 1); |
2913 | line[res] = '\0'; |
2914 | } |
2915 | |
2916 | devicePtr = line; |
2917 | bounds = line + res; |
2918 | |
2919 | while ((isspace(*line) && ((devicePtr + 1) <= bounds))) |
2920 | devicePtr++; |
2921 | dbgPrintf("device: %s\n", devicePtr); |
2922 | |
2923 | if (!strncmp(devicePtr, device, strlen(device))) { |
2924 | devicePtr += strlen(device); |
2925 | while (isspace(*devicePtr) |
2926 | && ((devicePtr + 1) <= bounds)) |
2927 | devicePtr++; |
2928 | |
2929 | *bootPtr = strdup(devicePtr); |
2930 | break; |
2931 | } |
2932 | } |
2933 | |
2934 | free(line); |
2935 | fclose(deviceMap); |
2936 | return 0; |
2937 | } |
2938 | |
2939 | int suseGrubConfGetBoot(const char *path, char **bootPtr) |
2940 | { |
2941 | char *grubDevice; |
2942 | |
2943 | if (suseGrubConfGetInstallDevice(path, &grubDevice)) |
2944 | dbgPrintf("error looking for grub installation device\n"); |
2945 | else |
2946 | dbgPrintf("grubby installation device: %s\n", grubDevice); |
2947 | |
2948 | if (grubGetBootFromDeviceMap(grubDevice, bootPtr)) |
2949 | dbgPrintf("error looking for grub boot device\n"); |
2950 | else |
2951 | dbgPrintf("grubby boot device: %s\n", *bootPtr); |
2952 | |
2953 | free(grubDevice); |
2954 | return 0; |
2955 | } |
2956 | |
2957 | int parseSuseGrubConf(int *lbaPtr, char **bootPtr) |
2958 | { |
2959 | /* |
2960 | * This SuSE grub configuration file at this location is not your |
2961 | * average grub configuration file, but instead the grub commands |
2962 | * used to setup grub on that system. |
2963 | */ |
2964 | const char *path; |
2965 | const static char default_path[] = "/etc/grub.conf"; |
2966 | |
2967 | if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL) |
2968 | path = default_path; |
2969 | |
2970 | if (!isSuseGrubConf(path)) |
2971 | return 1; |
2972 | |
2973 | if (lbaPtr) { |
2974 | *lbaPtr = 0; |
2975 | if (suseGrubConfGetLba(path, lbaPtr)) |
2976 | return 1; |
2977 | } |
2978 | |
2979 | if (bootPtr) { |
2980 | *bootPtr = NULL; |
2981 | suseGrubConfGetBoot(path, bootPtr); |
2982 | } |
2983 | |
2984 | return 0; |
2985 | } |
2986 | |
2987 | int parseSysconfigGrub(int *lbaPtr, char **bootPtr) |
2988 | { |
2989 | FILE *in; |
2990 | char buf[1024]; |
2991 | char *chptr; |
2992 | char *start; |
2993 | char *param; |
2994 | |
2995 | in = fopen("/etc/sysconfig/grub", "r"); |
2996 | if (!in) |
2997 | return 1; |
2998 | |
2999 | if (lbaPtr) |
3000 | *lbaPtr = 0; |
3001 | if (bootPtr) |
3002 | *bootPtr = NULL; |
3003 | |
3004 | while (fgets(buf, sizeof(buf), in)) { |
3005 | start = buf; |
3006 | while (isspace(*start)) |
3007 | start++; |
3008 | if (*start == '#') |
3009 | continue; |
3010 | |
3011 | chptr = strchr(start, '='); |
3012 | if (!chptr) |
3013 | continue; |
3014 | chptr--; |
3015 | while (*chptr && isspace(*chptr)) |
3016 | chptr--; |
3017 | chptr++; |
3018 | *chptr = '\0'; |
3019 | |
3020 | param = chptr + 1; |
3021 | while (*param && isspace(*param)) |
3022 | param++; |
3023 | if (*param == '=') { |
3024 | param++; |
3025 | while (*param && isspace(*param)) |
3026 | param++; |
3027 | } |
3028 | |
3029 | chptr = param; |
3030 | while (*chptr && !isspace(*chptr)) |
3031 | chptr++; |
3032 | *chptr = '\0'; |
3033 | |
3034 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
3035 | *lbaPtr = 1; |
3036 | else if (!strcmp(start, "boot") && bootPtr) |
3037 | *bootPtr = strdup(param); |
3038 | } |
3039 | |
3040 | fclose(in); |
3041 | |
3042 | return 0; |
3043 | } |
3044 | |
3045 | void dumpSysconfigGrub(void) |
3046 | { |
3047 | char *boot = NULL; |
3048 | int lba; |
3049 | |
3050 | if (isSuseSystem()) { |
3051 | if (parseSuseGrubConf(&lba, &boot)) { |
3052 | free(boot); |
3053 | return; |
3054 | } |
3055 | } else { |
3056 | if (parseSysconfigGrub(&lba, &boot)) { |
3057 | free(boot); |
3058 | return; |
3059 | } |
3060 | } |
3061 | |
3062 | if (lba) |
3063 | printf("lba\n"); |
3064 | if (boot) { |
3065 | printf("boot=%s\n", boot); |
3066 | free(boot); |
3067 | } |
3068 | } |
3069 | |
3070 | int displayInfo(struct grubConfig *config, char *kernel, const char *prefix) |
3071 | { |
3072 | int i = 0; |
3073 | struct singleEntry *entry; |
3074 | struct singleLine *line; |
3075 | |
3076 | entry = findEntryByPath(config, kernel, prefix, &i); |
3077 | if (!entry) { |
3078 | fprintf(stderr, _("grubby: kernel not found\n")); |
3079 | return 1; |
3080 | } |
3081 | |
3082 | /* this is a horrible hack to support /etc/sysconfig/grub; there must |
3083 | be a better way */ |
3084 | if (config->cfi == &grubConfigType) { |
3085 | dumpSysconfigGrub(); |
3086 | } else { |
3087 | line = getLineByType(LT_BOOT, config->theLines); |
3088 | if (line && line->numElements >= 1) { |
3089 | printf("boot=%s\n", line->elements[1].item); |
3090 | } |
3091 | |
3092 | line = getLineByType(LT_LBA, config->theLines); |
3093 | if (line) |
3094 | printf("lba\n"); |
3095 | } |
3096 | |
3097 | displayEntry(entry, prefix, i); |
3098 | |
3099 | i++; |
3100 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
3101 | displayEntry(entry, prefix, i); |
3102 | i++; |
3103 | } |
3104 | |
3105 | return 0; |
3106 | } |
3107 | |
3108 | struct singleLine *addLineTmpl(struct singleEntry *entry, |
3109 | struct singleLine *tmplLine, |
3110 | struct singleLine *prevLine, |
3111 | const char *val, struct configFileInfo *cfi) |
3112 | { |
3113 | struct singleLine *newLine = lineDup(tmplLine); |
3114 | |
3115 | if (isEfi && cfi == &grub2ConfigType) { |
3116 | enum lineType_e old = newLine->type; |
3117 | newLine->type = preferredLineType(newLine->type, cfi); |
3118 | if (old != newLine->type) |
3119 | newLine->elements[0].item = |
3120 | getKeyByType(newLine->type, cfi); |
3121 | } |
3122 | |
3123 | if (val) { |
3124 | /* override the inherited value with our own. |
3125 | * This is a little weak because it only applies to elements[1] |
3126 | */ |
3127 | if (newLine->numElements > 1) |
3128 | removeElement(newLine, 1); |
3129 | insertElement(newLine, val, 1, cfi); |
3130 | |
3131 | /* but try to keep the rootspec from the template... sigh */ |
3132 | if (tmplLine-> |
3133 | type & (LT_HYPER | LT_KERNEL | LT_MBMODULE | LT_INITRD | |
3134 | LT_KERNEL_EFI | LT_INITRD_EFI | LT_KERNEL_16 | |
3135 | LT_INITRD_16)) { |
3136 | char *rootspec = |
3137 | getRootSpecifier(tmplLine->elements[1].item); |
3138 | if (rootspec != NULL) { |
3139 | free(newLine->elements[1].item); |
3140 | newLine->elements[1].item = |
3141 | sdupprintf("%s%s", rootspec, val); |
3142 | } |
3143 | } |
3144 | } |
3145 | |
3146 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? |
3147 | newLine->elements[0].item : ""); |
3148 | |
3149 | if (!entry->lines) { |
3150 | /* first one on the list */ |
3151 | entry->lines = newLine; |
3152 | } else if (prevLine) { |
3153 | /* add after prevLine */ |
3154 | newLine->next = prevLine->next; |
3155 | prevLine->next = newLine; |
3156 | } |
3157 | |
3158 | return newLine; |
3159 | } |
3160 | |
3161 | /* val may be NULL */ |
3162 | struct singleLine *addLine(struct singleEntry *entry, |
3163 | struct configFileInfo *cfi, |
3164 | enum lineType_e type, char *defaultIndent, |
3165 | const char *val) |
3166 | { |
3167 | struct singleLine *line, *prev; |
3168 | struct keywordTypes *kw; |
3169 | struct singleLine tmpl; |
3170 | |
3171 | /* NB: This function shouldn't allocate items on the heap, rather on |
3172 | * the stack since it calls addLineTmpl which will make copies. |
3173 | */ |
3174 | if (type == LT_TITLE && cfi->titleBracketed) { |
3175 | /* we're doing a bracketed title (zipl) */ |
3176 | tmpl.type = type; |
3177 | tmpl.numElements = 1; |
3178 | tmpl.elements = alloca(sizeof(*tmpl.elements)); |
3179 | tmpl.elements[0].item = alloca(strlen(val) + 3); |
3180 | sprintf(tmpl.elements[0].item, "[%s]", val); |
3181 | tmpl.elements[0].indent = ""; |
3182 | val = NULL; |
3183 | } else if (type == LT_MENUENTRY) { |
3184 | char *lineend = "--class gnu-linux --class gnu --class os {"; |
3185 | if (!val) { |
3186 | fprintf(stderr, |
3187 | "Line type LT_MENUENTRY requires a value\n"); |
3188 | abort(); |
3189 | } |
3190 | kw = getKeywordByType(type, cfi); |
3191 | if (!kw) { |
3192 | fprintf(stderr, |
3193 | "Looking up keyword for unknown type %d\n", |
3194 | type); |
3195 | abort(); |
3196 | } |
3197 | tmpl.indent = ""; |
3198 | tmpl.type = type; |
3199 | tmpl.numElements = 3; |
3200 | tmpl.elements = |
3201 | alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
3202 | tmpl.elements[0].item = kw->key; |
3203 | tmpl.elements[0].indent = alloca(2); |
3204 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
3205 | tmpl.elements[1].item = (char *)val; |
3206 | tmpl.elements[1].indent = alloca(2); |
3207 | sprintf(tmpl.elements[1].indent, "%c", kw->nextChar); |
3208 | tmpl.elements[2].item = alloca(strlen(lineend) + 1); |
3209 | strcpy(tmpl.elements[2].item, lineend); |
3210 | tmpl.elements[2].indent = ""; |
3211 | } else { |
3212 | kw = getKeywordByType(type, cfi); |
3213 | if (!kw) { |
3214 | fprintf(stderr, |
3215 | "Looking up keyword for unknown type %d\n", |
3216 | type); |
3217 | abort(); |
3218 | } |
3219 | tmpl.type = type; |
3220 | tmpl.numElements = val ? 2 : 1; |
3221 | tmpl.elements = |
3222 | alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
3223 | tmpl.elements[0].item = kw->key; |
3224 | tmpl.elements[0].indent = alloca(2); |
3225 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
3226 | if (val) { |
3227 | tmpl.elements[1].item = (char *)val; |
3228 | tmpl.elements[1].indent = ""; |
3229 | } |
3230 | } |
3231 | |
3232 | /* The last non-empty line gives us the indention to us and the line |
3233 | * to insert after. Note that comments are considered empty lines, |
3234 | * which may not be ideal? If there are no lines or we are looking at |
3235 | * the first line, we use defaultIndent (the first line is normally |
3236 | * indented differently from the rest) */ |
3237 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
3238 | if (line->numElements) |
3239 | prev = line; |
3240 | /* fall back on the last line if prev isn't otherwise set */ |
3241 | if (!line->next && !prev) |
3242 | prev = line; |
3243 | } |
3244 | |
3245 | struct singleLine *menuEntry; |
3246 | menuEntry = getLineByType(LT_MENUENTRY, entry->lines); |
3247 | if (tmpl.type == LT_ENTRY_END) { |
3248 | if (menuEntry) |
3249 | tmpl.indent = menuEntry->indent; |
3250 | else |
3251 | tmpl.indent = defaultIndent ? : ""; |
3252 | } else if (tmpl.type != LT_MENUENTRY) { |
3253 | if (menuEntry) |
3254 | tmpl.indent = "\t"; |
3255 | else if (prev == entry->lines) |
3256 | tmpl.indent = defaultIndent ? : ""; |
3257 | else |
3258 | tmpl.indent = prev->indent; |
3259 | } |
3260 | |
3261 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
3262 | } |
3263 | |
3264 | void removeLine(struct singleEntry *entry, struct singleLine *line) |
3265 | { |
3266 | struct singleLine *prev; |
3267 | int i; |
3268 | |
3269 | for (i = 0; i < line->numElements; i++) { |
3270 | free(line->elements[i].item); |
3271 | free(line->elements[i].indent); |
3272 | } |
3273 | free(line->elements); |
3274 | free(line->indent); |
3275 | |
3276 | if (line == entry->lines) { |
3277 | entry->lines = line->next; |
3278 | } else { |
3279 | prev = entry->lines; |
3280 | while (prev->next != line) |
3281 | prev = prev->next; |
3282 | prev->next = line->next; |
3283 | } |
3284 | |
3285 | free(line); |
3286 | } |
3287 | |
3288 | static void requote(struct singleLine *tmplLine, struct configFileInfo *cfi) |
3289 | { |
3290 | struct singleLine newLine = { |
3291 | .indent = tmplLine->indent, |
3292 | .type = tmplLine->type, |
3293 | .next = tmplLine->next, |
3294 | }; |
3295 | int firstQuotedItem = -1; |
3296 | int quoteLen = 0; |
3297 | int j; |
3298 | int element = 0; |
3299 | char *c; |
3300 | |
3301 | c = malloc(strlen(tmplLine->elements[0].item) + 1); |
3302 | strcpy(c, tmplLine->elements[0].item); |
3303 | insertElement(&newLine, c, element++, cfi); |
3304 | free(c); |
3305 | c = NULL; |
3306 | |
3307 | for (j = 1; j < tmplLine->numElements; j++) { |
3308 | if (firstQuotedItem == -1) { |
3309 | quoteLen += strlen(tmplLine->elements[j].item); |
3310 | |
3311 | if (isquote(tmplLine->elements[j].item[0])) { |
3312 | firstQuotedItem = j; |
3313 | quoteLen += |
3314 | strlen(tmplLine->elements[j].indent); |
3315 | } else { |
3316 | c = malloc(quoteLen + 1); |
3317 | strcpy(c, tmplLine->elements[j].item); |
3318 | insertElement(&newLine, c, element++, cfi); |
3319 | free(c); |
3320 | quoteLen = 0; |
3321 | } |
3322 | } else { |
3323 | int itemlen = strlen(tmplLine->elements[j].item); |
3324 | quoteLen += itemlen; |
3325 | quoteLen += strlen(tmplLine->elements[j].indent); |
3326 | |
3327 | if (isquote(tmplLine->elements[j].item[itemlen - 1])) { |
3328 | c = malloc(quoteLen + 1); |
3329 | c[0] = '\0'; |
3330 | for (int i = firstQuotedItem; i < j + 1; i++) { |
3331 | strcat(c, tmplLine->elements[i].item); |
3332 | strcat(c, tmplLine->elements[i].indent); |
3333 | } |
3334 | insertElement(&newLine, c, element++, cfi); |
3335 | free(c); |
3336 | |
3337 | firstQuotedItem = -1; |
3338 | quoteLen = 0; |
3339 | } |
3340 | } |
3341 | } |
3342 | while (tmplLine->numElements) |
3343 | removeElement(tmplLine, 0); |
3344 | if (tmplLine->elements) |
3345 | free(tmplLine->elements); |
3346 | |
3347 | tmplLine->numElements = newLine.numElements; |
3348 | tmplLine->elements = newLine.elements; |
3349 | } |
3350 | |
3351 | static void insertElement(struct singleLine *line, |
3352 | const char *item, int insertHere, |
3353 | struct configFileInfo *cfi) |
3354 | { |
3355 | struct keywordTypes *kw; |
3356 | char indent[2] = ""; |
3357 | |
3358 | /* sanity check */ |
3359 | if (insertHere > line->numElements) { |
3360 | dbgPrintf |
3361 | ("insertElement() adjusting insertHere from %d to %d\n", |
3362 | insertHere, line->numElements); |
3363 | insertHere = line->numElements; |
3364 | } |
3365 | |
3366 | line->elements = realloc(line->elements, (line->numElements + 1) * |
3367 | sizeof(*line->elements)); |
3368 | memmove(&line->elements[insertHere + 1], |
3369 | &line->elements[insertHere], |
3370 | (line->numElements - insertHere) * sizeof(*line->elements)); |
3371 | line->elements[insertHere].item = strdup(item); |
3372 | |
3373 | kw = getKeywordByType(line->type, cfi); |
3374 | |
3375 | if (line->numElements == 0) { |
3376 | indent[0] = '\0'; |
3377 | } else if (insertHere == 0) { |
3378 | indent[0] = kw->nextChar; |
3379 | } else if (kw->separatorChar != '\0') { |
3380 | indent[0] = kw->separatorChar; |
3381 | } else { |
3382 | indent[0] = ' '; |
3383 | } |
3384 | |
3385 | if (insertHere > 0 && line->elements[insertHere - 1].indent[0] == '\0') { |
3386 | /* move the end-of-line forward */ |
3387 | line->elements[insertHere].indent = |
3388 | line->elements[insertHere - 1].indent; |
3389 | line->elements[insertHere - 1].indent = strdup(indent); |
3390 | } else { |
3391 | line->elements[insertHere].indent = strdup(indent); |
3392 | } |
3393 | |
3394 | line->numElements++; |
3395 | |
3396 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", |
3397 | line->elements[0].item, |
3398 | line->elements[insertHere].item, |
3399 | line->elements[insertHere].indent, insertHere); |
3400 | } |
3401 | |
3402 | static void removeElement(struct singleLine *line, int removeHere) |
3403 | { |
3404 | int i; |
3405 | |
3406 | /* sanity check */ |
3407 | if (removeHere >= line->numElements) |
3408 | return; |
3409 | |
3410 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, |
3411 | removeHere, line->elements[removeHere].item); |
3412 | |
3413 | free(line->elements[removeHere].item); |
3414 | |
3415 | if (removeHere > 1) { |
3416 | /* previous argument gets this argument's post-indentation */ |
3417 | free(line->elements[removeHere - 1].indent); |
3418 | line->elements[removeHere - 1].indent = |
3419 | line->elements[removeHere].indent; |
3420 | } else { |
3421 | free(line->elements[removeHere].indent); |
3422 | } |
3423 | |
3424 | /* now collapse the array, but don't bother to realloc smaller */ |
3425 | for (i = removeHere; i < line->numElements - 1; i++) |
3426 | line->elements[i] = line->elements[i + 1]; |
3427 | |
3428 | line->numElements--; |
3429 | } |
3430 | |
3431 | int argMatch(const char *one, const char *two) |
3432 | { |
3433 | char *first, *second; |
3434 | char *chptr; |
3435 | |
3436 | first = strcpy(alloca(strlen(one) + 1), one); |
3437 | second = strcpy(alloca(strlen(two) + 1), two); |
3438 | |
3439 | chptr = strchr(first, '='); |
3440 | if (chptr) |
3441 | *chptr = '\0'; |
3442 | |
3443 | chptr = strchr(second, '='); |
3444 | if (chptr) |
3445 | *chptr = '\0'; |
3446 | |
3447 | return strcmp(first, second); |
3448 | } |
3449 | |
3450 | int updateActualImage(struct grubConfig *cfg, const char *image, |
3451 | const char *prefix, const char *addArgs, |
3452 | const char *removeArgs, int multibootArgs) |
3453 | { |
3454 | struct singleEntry *entry; |
3455 | struct singleLine *line, *rootLine; |
3456 | int index = 0; |
3457 | int i, k; |
3458 | const char **newArgs, **oldArgs; |
3459 | const char **arg; |
3460 | int useKernelArgs, useRoot; |
3461 | int firstElement; |
3462 | int *usedElements; |
3463 | int doreplace; |
3464 | |
3465 | if (!image) |
3466 | return 0; |
3467 | |
3468 | if (!addArgs) { |
3469 | newArgs = malloc(sizeof(*newArgs)); |
3470 | *newArgs = NULL; |
3471 | } else { |
3472 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
3473 | fprintf(stderr, |
3474 | _("grubby: error separating arguments '%s'\n"), |
3475 | addArgs); |
3476 | return 1; |
3477 | } |
3478 | } |
3479 | |
3480 | if (!removeArgs) { |
3481 | oldArgs = malloc(sizeof(*oldArgs)); |
3482 | *oldArgs = NULL; |
3483 | } else { |
3484 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
3485 | fprintf(stderr, |
3486 | _("grubby: error separating arguments '%s'\n"), |
3487 | removeArgs); |
3488 | free(newArgs); |
3489 | return 1; |
3490 | } |
3491 | } |
3492 | |
3493 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
3494 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); |
3495 | |
3496 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
3497 | && !multibootArgs); |
3498 | |
3499 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3500 | |
3501 | if (multibootArgs && !entry->multiboot) |
3502 | continue; |
3503 | |
3504 | /* Determine where to put the args. If this config supports |
3505 | * LT_KERNELARGS, use that. Otherwise use |
3506 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. |
3507 | */ |
3508 | if (useKernelArgs) { |
3509 | line = getLineByType(LT_KERNELARGS, entry->lines); |
3510 | if (!line) { |
3511 | /* no LT_KERNELARGS, need to add it */ |
3512 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, |
3513 | cfg->secondaryIndent, NULL); |
3514 | } |
3515 | firstElement = 1; |
3516 | |
3517 | } else if (multibootArgs) { |
3518 | line = getLineByType(LT_HYPER, entry->lines); |
3519 | if (!line) { |
3520 | /* a multiboot entry without LT_HYPER? */ |
3521 | continue; |
3522 | } |
3523 | firstElement = 2; |
3524 | |
3525 | } else { |
3526 | line = |
3527 | getLineByType(LT_KERNEL | LT_MBMODULE | |
3528 | LT_KERNEL_EFI | LT_KERNEL_16, |
3529 | entry->lines); |
3530 | if (!line) { |
3531 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ |
3532 | continue; |
3533 | } |
3534 | firstElement = 2; |
3535 | } |
3536 | |
3537 | /* handle the elilo case which does: |
3538 | * append="hypervisor args -- kernel args" |
3539 | */ |
3540 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { |
3541 | /* this is a multiboot entry, make sure there's |
3542 | * -- on the args line |
3543 | */ |
3544 | for (i = firstElement; i < line->numElements; i++) { |
3545 | if (!strcmp(line->elements[i].item, "--")) |
3546 | break; |
3547 | } |
3548 | if (i == line->numElements) { |
3549 | /* assume all existing args are kernel args, |
3550 | * prepend -- to make it official |
3551 | */ |
3552 | insertElement(line, "--", firstElement, |
3553 | cfg->cfi); |
3554 | i = firstElement; |
3555 | } |
3556 | if (!multibootArgs) { |
3557 | /* kernel args start after the -- */ |
3558 | firstElement = i + 1; |
3559 | } |
3560 | } else if (cfg->cfi->mbConcatArgs) { |
3561 | /* this is a non-multiboot entry, remove hyper args */ |
3562 | for (i = firstElement; i < line->numElements; i++) { |
3563 | if (!strcmp(line->elements[i].item, "--")) |
3564 | break; |
3565 | } |
3566 | if (i < line->numElements) { |
3567 | /* remove args up to -- */ |
3568 | while (strcmp |
3569 | (line->elements[firstElement].item, |
3570 | "--")) |
3571 | removeElement(line, firstElement); |
3572 | /* remove -- */ |
3573 | removeElement(line, firstElement); |
3574 | } |
3575 | } |
3576 | |
3577 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
3578 | |
3579 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
3580 | |
3581 | doreplace = 1; |
3582 | for (i = firstElement; i < line->numElements; i++) { |
3583 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
3584 | !strcmp(line->elements[i].item, "--")) { |
3585 | /* reached the end of hyper args, insert here */ |
3586 | doreplace = 0; |
3587 | break; |
3588 | } |
3589 | if (usedElements[i]) |
3590 | continue; |
3591 | if (!argMatch(line->elements[i].item, *arg)) { |
3592 | usedElements[i] = 1; |
3593 | break; |
3594 | } |
3595 | } |
3596 | |
3597 | if (i < line->numElements && doreplace) { |
3598 | /* direct replacement */ |
3599 | free(line->elements[i].item); |
3600 | line->elements[i].item = strdup(*arg); |
3601 | |
3602 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
3603 | /* root= replacement */ |
3604 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3605 | if (rootLine) { |
3606 | free(rootLine->elements[1].item); |
3607 | rootLine->elements[1].item = |
3608 | strdup(*arg + 5); |
3609 | } else { |
3610 | rootLine = |
3611 | addLine(entry, cfg->cfi, LT_ROOT, |
3612 | cfg->secondaryIndent, |
3613 | *arg + 5); |
3614 | } |
3615 | } |
3616 | |
3617 | else { |
3618 | /* insert/append */ |
3619 | insertElement(line, *arg, i, cfg->cfi); |
3620 | usedElements = |
3621 | realloc(usedElements, |
3622 | line->numElements * |
3623 | sizeof(*usedElements)); |
3624 | memmove(&usedElements[i + 1], &usedElements[i], |
3625 | line->numElements - i - 1); |
3626 | usedElements[i] = 1; |
3627 | |
3628 | /* if we updated a root= here even though |
3629 | * there is a LT_ROOT available we need to |
3630 | * remove the LT_ROOT entry (this will happen |
3631 | * if we switch from a device to a label) */ |
3632 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
3633 | rootLine = |
3634 | getLineByType(LT_ROOT, |
3635 | entry->lines); |
3636 | if (rootLine) |
3637 | removeLine(entry, rootLine); |
3638 | } |
3639 | } |
3640 | } |
3641 | |
3642 | free(usedElements); |
3643 | |
3644 | for (arg = oldArgs; *arg; arg++) { |
3645 | for (i = firstElement; i < line->numElements; i++) { |
3646 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
3647 | !strcmp(line->elements[i].item, "--")) |
3648 | /* reached the end of hyper args, stop here */ |
3649 | break; |
3650 | if (!argMatch(line->elements[i].item, *arg)) { |
3651 | removeElement(line, i); |
3652 | break; |
3653 | } |
3654 | } |
3655 | /* handle removing LT_ROOT line too */ |
3656 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
3657 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3658 | if (rootLine) |
3659 | removeLine(entry, rootLine); |
3660 | } |
3661 | } |
3662 | |
3663 | if (line->numElements == 1) { |
3664 | /* don't need the line at all (note it has to be a |
3665 | LT_KERNELARGS for this to happen */ |
3666 | removeLine(entry, line); |
3667 | } |
3668 | } |
3669 | |
3670 | free(newArgs); |
3671 | free(oldArgs); |
3672 | |
3673 | return 0; |
3674 | } |
3675 | |
3676 | int updateImage(struct grubConfig *cfg, const char *image, |
3677 | const char *prefix, const char *addArgs, |
3678 | const char *removeArgs, |
3679 | const char *addMBArgs, const char *removeMBArgs) |
3680 | { |
3681 | int rc = 0; |
3682 | |
3683 | if (!image) |
3684 | return rc; |
3685 | |
3686 | /* update the main args first... */ |
3687 | if (addArgs || removeArgs) |
3688 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, |
3689 | 0); |
3690 | if (rc) |
3691 | return rc; |
3692 | |
3693 | /* and now any multiboot args */ |
3694 | if (addMBArgs || removeMBArgs) |
3695 | rc = updateActualImage(cfg, image, prefix, addMBArgs, |
3696 | removeMBArgs, 1); |
3697 | return rc; |
3698 | } |
3699 | |
3700 | int addMBInitrd(struct grubConfig *cfg, const char *newMBKernel, |
3701 | const char *image, const char *prefix, const char *initrd, |
3702 | const char *title) |
3703 | { |
3704 | struct singleEntry *entry; |
3705 | struct singleLine *line, *kernelLine, *endLine = NULL; |
3706 | int index = 0; |
3707 | |
3708 | if (!image) |
3709 | return 0; |
3710 | |
3711 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3712 | kernelLine = getLineByType(LT_MBMODULE, entry->lines); |
3713 | if (!kernelLine) |
3714 | continue; |
3715 | |
3716 | /* if title is supplied, the entry's title must match it. */ |
3717 | if (title) { |
3718 | char *linetitle; |
3719 | |
3720 | line = |
3721 | getLineByType(LT_TITLE | LT_MENUENTRY, |
3722 | entry->lines); |
3723 | if (!line) |
3724 | continue; |
3725 | |
3726 | linetitle = extractTitle(cfg, line); |
3727 | if (!linetitle) |
3728 | continue; |
3729 | if (strcmp(title, linetitle)) { |
3730 | free(linetitle); |
3731 | continue; |
3732 | } |
3733 | free(linetitle); |
3734 | } |
3735 | |
3736 | if (prefix) { |
3737 | int prefixLen = strlen(prefix); |
3738 | if (!strncmp(initrd, prefix, prefixLen)) |
3739 | initrd += prefixLen; |
3740 | } |
3741 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
3742 | if (endLine) |
3743 | removeLine(entry, endLine); |
3744 | line = |
3745 | addLine(entry, cfg->cfi, |
3746 | preferredLineType(LT_MBMODULE, cfg->cfi), |
3747 | kernelLine->indent, initrd); |
3748 | if (!line) |
3749 | return 1; |
3750 | if (endLine) { |
3751 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
3752 | if (!line) |
3753 | return 1; |
3754 | } |
3755 | |
3756 | break; |
3757 | } |
3758 | |
3759 | return 0; |
3760 | } |
3761 | |
3762 | int updateInitrd(struct grubConfig *cfg, const char *image, |
3763 | const char *prefix, const char *initrd, const char *title) |
3764 | { |
3765 | struct singleEntry *entry; |
3766 | struct singleLine *line, *kernelLine, *endLine = NULL; |
3767 | int index = 0; |
3768 | |
3769 | if (!image) |
3770 | return 0; |
3771 | |
3772 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3773 | kernelLine = |
3774 | getLineByType(LT_KERNEL | LT_KERNEL_EFI | LT_KERNEL_16, |
3775 | entry->lines); |
3776 | if (!kernelLine) |
3777 | continue; |
3778 | |
3779 | /* if title is supplied, the entry's title must match it. */ |
3780 | if (title) { |
3781 | char *linetitle; |
3782 | |
3783 | line = |
3784 | getLineByType(LT_TITLE | LT_MENUENTRY, |
3785 | entry->lines); |
3786 | if (!line) |
3787 | continue; |
3788 | |
3789 | linetitle = extractTitle(cfg, line); |
3790 | if (!linetitle) |
3791 | continue; |
3792 | if (strcmp(title, linetitle)) { |
3793 | free(linetitle); |
3794 | continue; |
3795 | } |
3796 | free(linetitle); |
3797 | } |
3798 | |
3799 | line = |
3800 | getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16, |
3801 | entry->lines); |
3802 | if (line) |
3803 | removeLine(entry, line); |
3804 | if (prefix) { |
3805 | int prefixLen = strlen(prefix); |
3806 | if (!strncmp(initrd, prefix, prefixLen)) |
3807 | initrd += prefixLen; |
3808 | } |
3809 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
3810 | if (endLine) |
3811 | removeLine(entry, endLine); |
3812 | enum lineType_e lt; |
3813 | switch (kernelLine->type) { |
3814 | case LT_KERNEL: |
3815 | lt = LT_INITRD; |
3816 | break; |
3817 | case LT_KERNEL_EFI: |
3818 | lt = LT_INITRD_EFI; |
3819 | break; |
3820 | case LT_KERNEL_16: |
3821 | lt = LT_INITRD_16; |
3822 | break; |
3823 | default: |
3824 | lt = preferredLineType(LT_INITRD, cfg->cfi); |
3825 | } |
3826 | line = addLine(entry, cfg->cfi, lt, kernelLine->indent, initrd); |
3827 | if (!line) |
3828 | return 1; |
3829 | if (endLine) { |
3830 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
3831 | if (!line) |
3832 | return 1; |
3833 | } |
3834 | |
3835 | break; |
3836 | } |
3837 | |
3838 | return 0; |
3839 | } |
3840 | |
3841 | int checkDeviceBootloader(const char *device, const unsigned char *boot) |
3842 | { |
3843 | int fd; |
3844 | unsigned char bootSect[512]; |
3845 | int offset; |
3846 | |
3847 | fd = open(device, O_RDONLY); |
3848 | if (fd < 0) { |
3849 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3850 | device, strerror(errno)); |
3851 | return 1; |
3852 | } |
3853 | |
3854 | if (read(fd, bootSect, 512) != 512) { |
3855 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3856 | device, strerror(errno)); |
3857 | return 1; |
3858 | } |
3859 | close(fd); |
3860 | |
3861 | /* first three bytes should match, a jmp short should be in there */ |
3862 | if (memcmp(boot, bootSect, 3)) |
3863 | return 0; |
3864 | |
3865 | if (boot[1] == JMP_SHORT_OPCODE) { |
3866 | offset = boot[2] + 2; |
3867 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
3868 | offset = (boot[3] << 8) + boot[2] + 2; |
3869 | } else if (boot[0] == JMP_SHORT_OPCODE) { |
3870 | offset = boot[1] + 2; |
3871 | /* |
3872 | * it looks like grub, when copying stage1 into the mbr, |
3873 | * patches stage1 right after the JMP location, replacing |
3874 | * other instructions such as JMPs for NOOPs. So, relax the |
3875 | * check a little bit by skipping those different bytes. |
3876 | */ |
3877 | if ((bootSect[offset + 1] == NOOP_OPCODE) |
3878 | && (bootSect[offset + 2] == NOOP_OPCODE)) { |
3879 | offset = offset + 3; |
3880 | } |
3881 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
3882 | offset = (boot[2] << 8) + boot[1] + 2; |
3883 | } else { |
3884 | return 0; |
3885 | } |
3886 | |
3887 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
3888 | return 0; |
3889 | |
3890 | return 2; |
3891 | } |
3892 | |
3893 | int checkLiloOnRaid(char *mdDev, const unsigned char *boot) |
3894 | { |
3895 | int fd; |
3896 | char buf[65536]; |
3897 | char *end; |
3898 | char *chptr; |
3899 | char *chptr2; |
3900 | int rc; |
3901 | |
3902 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
3903 | *raw* devices listed in there */ |
3904 | |
3905 | if (!strncmp(mdDev, "/dev/", 5)) |
3906 | mdDev += 5; |
3907 | |
3908 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
3909 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
3910 | strerror(errno)); |
3911 | return 2; |
3912 | } |
3913 | |
3914 | rc = read(fd, buf, sizeof(buf) - 1); |
3915 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
3916 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
3917 | strerror(errno)); |
3918 | close(fd); |
3919 | return 2; |
3920 | } |
3921 | close(fd); |
3922 | buf[rc] = '\0'; |
3923 | |
3924 | chptr = buf; |
3925 | while (*chptr) { |
3926 | end = strchr(chptr, '\n'); |
3927 | if (!end) |
3928 | break; |
3929 | *end = '\0'; |
3930 | |
3931 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
3932 | chptr[strlen(mdDev)] == ' ') { |
3933 | |
3934 | /* found the device */ |
3935 | while (*chptr && *chptr != ':') |
3936 | chptr++; |
3937 | chptr++; |
3938 | while (*chptr && isspace(*chptr)) |
3939 | chptr++; |
3940 | |
3941 | /* skip the "active" bit */ |
3942 | while (*chptr && !isspace(*chptr)) |
3943 | chptr++; |
3944 | while (*chptr && isspace(*chptr)) |
3945 | chptr++; |
3946 | |
3947 | /* skip the raid level */ |
3948 | while (*chptr && !isspace(*chptr)) |
3949 | chptr++; |
3950 | while (*chptr && isspace(*chptr)) |
3951 | chptr++; |
3952 | |
3953 | /* everything else is partition stuff */ |
3954 | while (*chptr) { |
3955 | chptr2 = chptr; |
3956 | while (*chptr2 && *chptr2 != '[') |
3957 | chptr2++; |
3958 | if (!*chptr2) |
3959 | break; |
3960 | |
3961 | /* yank off the numbers at the end */ |
3962 | chptr2--; |
3963 | while (isdigit(*chptr2) && chptr2 > chptr) |
3964 | chptr2--; |
3965 | chptr2++; |
3966 | *chptr2 = '\0'; |
3967 | |
3968 | /* Better, now we need the /dev/ back. We're |
3969 | * done with everything before this point, so |
3970 | * we can just put the /dev/ part there. |
3971 | * There will always be room. */ |
3972 | memcpy(chptr - 5, "/dev/", 5); |
3973 | rc = checkDeviceBootloader(chptr - 5, boot); |
3974 | if (rc != 2) { |
3975 | return rc; |
3976 | } |
3977 | |
3978 | chptr = chptr2 + 1; |
3979 | /* skip the [11] bit */ |
3980 | while (*chptr && !isspace(*chptr)) |
3981 | chptr++; |
3982 | /* and move to the next one */ |
3983 | while (*chptr && isspace(*chptr)) |
3984 | chptr++; |
3985 | } |
3986 | |
3987 | /* we're good to go */ |
3988 | return 2; |
3989 | } |
3990 | |
3991 | chptr = end + 1; |
3992 | } |
3993 | |
3994 | fprintf(stderr, |
3995 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
3996 | mdDev); |
3997 | return 0; |
3998 | } |
3999 | |
4000 | int checkForLilo(struct grubConfig *config) |
4001 | { |
4002 | int fd; |
4003 | unsigned char boot[512]; |
4004 | struct singleLine *line; |
4005 | |
4006 | for (line = config->theLines; line; line = line->next) |
4007 | if (line->type == LT_BOOT) |
4008 | break; |
4009 | |
4010 | if (!line) { |
4011 | fprintf(stderr, |
4012 | _ |
4013 | ("grubby: no boot line found in lilo configuration\n")); |
4014 | return 1; |
4015 | } |
4016 | |
4017 | if (line->numElements != 2) |
4018 | return 1; |
4019 | |
4020 | fd = open("/boot/boot.b", O_RDONLY); |
4021 | if (fd < 0) { |
4022 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
4023 | "/boot/boot.b", strerror(errno)); |
4024 | return 1; |
4025 | } |
4026 | |
4027 | if (read(fd, boot, 512) != 512) { |
4028 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
4029 | "/boot/boot.b", strerror(errno)); |
4030 | return 1; |
4031 | } |
4032 | close(fd); |
4033 | |
4034 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
4035 | return checkLiloOnRaid(line->elements[1].item, boot); |
4036 | |
4037 | return checkDeviceBootloader(line->elements[1].item, boot); |
4038 | } |
4039 | |
4040 | int checkForGrub2(struct grubConfig *config) |
4041 | { |
4042 | if (!access("/etc/grub.d/", R_OK)) |
4043 | return 2; |
4044 | |
4045 | return 1; |
4046 | } |
4047 | |
4048 | int checkForGrub(struct grubConfig *config) |
4049 | { |
4050 | int fd; |
4051 | unsigned char bootSect[512]; |
4052 | char *boot; |
4053 | int onSuse = isSuseSystem(); |
4054 | |
4055 | if (onSuse) { |
4056 | if (parseSuseGrubConf(NULL, &boot)) |
4057 | return 0; |
4058 | } else { |
4059 | if (parseSysconfigGrub(NULL, &boot)) |
4060 | return 0; |
4061 | } |
4062 | |
4063 | /* assume grub is not installed -- not an error condition */ |
4064 | if (!boot) |
4065 | return 0; |
4066 | |
4067 | fd = open("/boot/grub/stage1", O_RDONLY); |
4068 | if (fd < 0) |
4069 | /* this doesn't exist if grub hasn't been installed */ |
4070 | return 0; |
4071 | |
4072 | if (read(fd, bootSect, 512) != 512) { |
4073 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
4074 | "/boot/grub/stage1", strerror(errno)); |
4075 | close(fd); |
4076 | return 1; |
4077 | } |
4078 | close(fd); |
4079 | |
4080 | /* The more elaborate checks do not work on SuSE. The checks done |
4081 | * seem to be reasonble (at least for now), so just return success |
4082 | */ |
4083 | if (onSuse) |
4084 | return 2; |
4085 | |
4086 | return checkDeviceBootloader(boot, bootSect); |
4087 | } |
4088 | |
4089 | int checkForExtLinux(struct grubConfig *config) |
4090 | { |
4091 | int fd; |
4092 | unsigned char bootSect[512]; |
4093 | char *boot; |
4094 | char executable[] = "/boot/extlinux/extlinux"; |
4095 | |
4096 | printf("entered: checkForExtLinux()\n"); |
4097 | |
4098 | if (parseSysconfigGrub(NULL, &boot)) |
4099 | return 0; |
4100 | |
4101 | /* assume grub is not installed -- not an error condition */ |
4102 | if (!boot) |
4103 | return 0; |
4104 | |
4105 | fd = open(executable, O_RDONLY); |
4106 | if (fd < 0) |
4107 | /* this doesn't exist if grub hasn't been installed */ |
4108 | return 0; |
4109 | |
4110 | if (read(fd, bootSect, 512) != 512) { |
4111 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
4112 | executable, strerror(errno)); |
4113 | return 1; |
4114 | } |
4115 | close(fd); |
4116 | |
4117 | return checkDeviceBootloader(boot, bootSect); |
4118 | } |
4119 | |
4120 | int checkForYaboot(struct grubConfig *config) |
4121 | { |
4122 | /* |
4123 | * This is a simplistic check that we consider good enough for own puporses |
4124 | * |
4125 | * If we were to properly check if yaboot is *installed* we'd need to: |
4126 | * 1) get the system boot device (LT_BOOT) |
4127 | * 2) considering it's a raw filesystem, check if the yaboot binary matches |
4128 | * the content on the boot device |
4129 | * 3) if not, copy the binary to a temporary file and run "addnote" on it |
4130 | * 4) check again if binary and boot device contents match |
4131 | */ |
4132 | if (!access("/etc/yaboot.conf", R_OK)) |
4133 | return 2; |
4134 | |
4135 | return 1; |
4136 | } |
4137 | |
4138 | int checkForElilo(struct grubConfig *config) |
4139 | { |
4140 | if (!access("/etc/elilo.conf", R_OK)) |
4141 | return 2; |
4142 | |
4143 | return 1; |
4144 | } |
4145 | |
4146 | static char *getRootSpecifier(char *str) |
4147 | { |
4148 | char *idx, *rootspec = NULL; |
4149 | |
4150 | if (*str == '(') { |
4151 | idx = rootspec = strdup(str); |
4152 | while (*idx && (*idx != ')') && (!isspace(*idx))) |
4153 | idx++; |
4154 | *(++idx) = '\0'; |
4155 | } |
4156 | return rootspec; |
4157 | } |
4158 | |
4159 | static char *getInitrdVal(struct grubConfig *config, |
4160 | const char *prefix, struct singleLine *tmplLine, |
4161 | const char *newKernelInitrd, |
4162 | const char **extraInitrds, int extraInitrdCount) |
4163 | { |
4164 | char *initrdVal, *end; |
4165 | int i; |
4166 | size_t totalSize; |
4167 | size_t prefixLen; |
4168 | char separatorChar; |
4169 | |
4170 | prefixLen = strlen(prefix); |
4171 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */ ; |
4172 | |
4173 | for (i = 0; i < extraInitrdCount; i++) { |
4174 | totalSize += sizeof(separatorChar); |
4175 | totalSize += strlen(extraInitrds[i]) - prefixLen; |
4176 | } |
4177 | |
4178 | initrdVal = end = malloc(totalSize); |
4179 | |
4180 | end = stpcpy(end, newKernelInitrd + prefixLen); |
4181 | |
4182 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; |
4183 | for (i = 0; i < extraInitrdCount; i++) { |
4184 | const char *extraInitrd; |
4185 | int j; |
4186 | |
4187 | extraInitrd = extraInitrds[i] + prefixLen; |
4188 | /* Don't add entries that are already there */ |
4189 | if (tmplLine != NULL) { |
4190 | for (j = 2; j < tmplLine->numElements; j++) |
4191 | if (strcmp |
4192 | (extraInitrd, |
4193 | tmplLine->elements[j].item) == 0) |
4194 | break; |
4195 | |
4196 | if (j != tmplLine->numElements) |
4197 | continue; |
4198 | } |
4199 | |
4200 | *end++ = separatorChar; |
4201 | end = stpcpy(end, extraInitrd); |
4202 | } |
4203 | |
4204 | return initrdVal; |
4205 | } |
4206 | |
4207 | int addNewKernel(struct grubConfig *config, struct singleEntry *template, |
4208 | const char *prefix, |
4209 | const char *newKernelPath, const char *newKernelTitle, |
4210 | const char *newKernelArgs, const char *newKernelInitrd, |
4211 | const char **extraInitrds, int extraInitrdCount, |
4212 | const char *newMBKernel, const char *newMBKernelArgs, |
4213 | const char *newDevTreePath, int newIndex) |
4214 | { |
4215 | struct singleEntry *new, *entry, *prev = NULL; |
4216 | struct singleLine *newLine = NULL, *tmplLine = NULL, *masterLine = NULL; |
4217 | int needs; |
4218 | char *indexs; |
4219 | char *chptr; |
4220 | int rc; |
4221 | |
4222 | if (!newKernelPath) |
4223 | return 0; |
4224 | |
4225 | rc = asprintf(&indexs, "%d", newIndex); |
4226 | if (rc < 0) |
4227 | return 1; |
4228 | |
4229 | /* if the newKernelTitle is too long silently munge it into something |
4230 | * we can live with. truncating is first check, then we'll just mess with |
4231 | * it until it looks better */ |
4232 | if (config->cfi->maxTitleLength && |
4233 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
4234 | char *buf = alloca(config->cfi->maxTitleLength + 7); |
4235 | char *numBuf = alloca(config->cfi->maxTitleLength + 1); |
4236 | int i = 1; |
4237 | |
4238 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, |
4239 | newKernelTitle); |
4240 | while (findEntryByPath(config, buf, NULL, NULL)) { |
4241 | sprintf(numBuf, "%d", i++); |
4242 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
4243 | } |
4244 | |
4245 | newKernelTitle = buf + 6; |
4246 | } |
4247 | |
4248 | new = malloc(sizeof(*new)); |
4249 | new->skip = 0; |
4250 | new->multiboot = 0; |
4251 | new->lines = NULL; |
4252 | entry = config->entries; |
4253 | for (unsigned int i = 0; i < newIndex; i++) { |
4254 | if (!entry) |
4255 | break; |
4256 | prev = entry; |
4257 | entry = entry->next; |
4258 | } |
4259 | new->next = entry; |
4260 | |
4261 | if (prev) |
4262 | prev->next = new; |
4263 | else |
4264 | config->entries = new; |
4265 | |
4266 | /* copy/update from the template */ |
4267 | needs = NEED_KERNEL | NEED_TITLE; |
4268 | if (newKernelInitrd) |
4269 | needs |= NEED_INITRD; |
4270 | if (newMBKernel) { |
4271 | needs |= NEED_MB; |
4272 | new->multiboot = 1; |
4273 | } |
4274 | if (newDevTreePath && getKeywordByType(LT_DEVTREE, config->cfi)) |
4275 | needs |= NEED_DEVTREE; |
4276 | |
4277 | if (template) { |
4278 | for (masterLine = template->lines; |
4279 | masterLine && (tmplLine = lineDup(masterLine)); |
4280 | lineFree(tmplLine), masterLine = masterLine->next) { |
4281 | dbgPrintf("addNewKernel processing %d\n", |
4282 | tmplLine->type); |
4283 | |
4284 | /* skip comments */ |
4285 | chptr = tmplLine->indent; |
4286 | while (*chptr && isspace(*chptr)) |
4287 | chptr++; |
4288 | if (*chptr == '#') |
4289 | continue; |
4290 | |
4291 | if (iskernel(tmplLine->type) |
4292 | && tmplLine->numElements >= 2) { |
4293 | if (!template->multiboot && (needs & NEED_MB)) { |
4294 | /* it's not a multiboot template and |
4295 | * this is the kernel line. Try to |
4296 | * be intelligent about inserting the |
4297 | * hypervisor at the same time. |
4298 | */ |
4299 | if (config->cfi->mbHyperFirst) { |
4300 | /* insert the hypervisor first */ |
4301 | newLine = |
4302 | addLine(new, config->cfi, |
4303 | LT_HYPER, |
4304 | tmplLine->indent, |
4305 | newMBKernel + |
4306 | strlen(prefix)); |
4307 | /* set up for adding the |
4308 | * kernel line */ |
4309 | free(tmplLine->indent); |
4310 | tmplLine->indent = |
4311 | strdup(config-> |
4312 | secondaryIndent); |
4313 | needs &= ~NEED_MB; |
4314 | } |
4315 | if (needs & NEED_KERNEL) { |
4316 | /* use addLineTmpl to |
4317 | * preserve line elements, |
4318 | * otherwise we could just |
4319 | * call addLine. |
4320 | * Unfortunately this means |
4321 | * making some changes to the |
4322 | * template such as the |
4323 | * indent change above and |
4324 | * the type change below. |
4325 | */ |
4326 | struct keywordTypes *mbm_kw = |
4327 | getKeywordByType |
4328 | (LT_MBMODULE, config->cfi); |
4329 | if (mbm_kw) { |
4330 | tmplLine->type = |
4331 | LT_MBMODULE; |
4332 | free(tmplLine-> |
4333 | elements[0].item); |
4334 | tmplLine->elements[0]. |
4335 | item = |
4336 | strdup(mbm_kw->key); |
4337 | } |
4338 | newLine = |
4339 | addLineTmpl(new, tmplLine, |
4340 | newLine, |
4341 | newKernelPath + |
4342 | strlen(prefix), |
4343 | config->cfi); |
4344 | needs &= ~NEED_KERNEL; |
4345 | } |
4346 | if (needs & NEED_MB) { /* !mbHyperFirst */ |
4347 | newLine = |
4348 | addLine(new, config->cfi, |
4349 | LT_HYPER, |
4350 | config-> |
4351 | secondaryIndent, |
4352 | newMBKernel + |
4353 | strlen(prefix)); |
4354 | needs &= ~NEED_MB; |
4355 | } |
4356 | } else if (needs & NEED_KERNEL) { |
4357 | newLine = |
4358 | addLineTmpl(new, tmplLine, newLine, |
4359 | newKernelPath + |
4360 | strlen(prefix), |
4361 | config->cfi); |
4362 | needs &= ~NEED_KERNEL; |
4363 | } |
4364 | |
4365 | } else if (tmplLine->type == LT_HYPER && |
4366 | tmplLine->numElements >= 2) { |
4367 | if (needs & NEED_MB) { |
4368 | newLine = |
4369 | addLineTmpl(new, tmplLine, newLine, |
4370 | newMBKernel + |
4371 | strlen(prefix), |
4372 | config->cfi); |
4373 | needs &= ~NEED_MB; |
4374 | } |
4375 | |
4376 | } else if (tmplLine->type == LT_MBMODULE && |
4377 | tmplLine->numElements >= 2) { |
4378 | if (new->multiboot) { |
4379 | if (needs & NEED_KERNEL) { |
4380 | newLine = |
4381 | addLineTmpl(new, tmplLine, |
4382 | newLine, |
4383 | newKernelPath + |
4384 | strlen(prefix), |
4385 | config->cfi); |
4386 | needs &= ~NEED_KERNEL; |
4387 | } else if (config->cfi->mbInitRdIsModule |
4388 | && (needs & NEED_INITRD)) { |
4389 | char *initrdVal; |
4390 | initrdVal = |
4391 | getInitrdVal(config, prefix, |
4392 | tmplLine, |
4393 | newKernelInitrd, |
4394 | extraInitrds, |
4395 | extraInitrdCount); |
4396 | newLine = |
4397 | addLineTmpl(new, tmplLine, |
4398 | newLine, |
4399 | initrdVal, |
4400 | config->cfi); |
4401 | free(initrdVal); |
4402 | needs &= ~NEED_INITRD; |
4403 | } |
4404 | } else if (needs & NEED_KERNEL) { |
4405 | /* template is multi but new is not, |
4406 | * insert the kernel in the first |
4407 | * module slot |
4408 | */ |
4409 | tmplLine->type = |
4410 | preferredLineType(LT_KERNEL, |
4411 | config->cfi); |
4412 | free(tmplLine->elements[0].item); |
4413 | tmplLine->elements[0].item = |
4414 | strdup(getKeywordByType |
4415 | (tmplLine->type, |
4416 | config->cfi)->key); |
4417 | newLine = |
4418 | addLineTmpl(new, tmplLine, newLine, |
4419 | newKernelPath + |
4420 | strlen(prefix), |
4421 | config->cfi); |
4422 | needs &= ~NEED_KERNEL; |
4423 | } else if (needs & NEED_INITRD) { |
4424 | char *initrdVal; |
4425 | /* template is multi but new is not, |
4426 | * insert the initrd in the second |
4427 | * module slot |
4428 | */ |
4429 | tmplLine->type = |
4430 | preferredLineType(LT_INITRD, |
4431 | config->cfi); |
4432 | free(tmplLine->elements[0].item); |
4433 | tmplLine->elements[0].item = |
4434 | strdup(getKeywordByType |
4435 | (tmplLine->type, |
4436 | config->cfi)->key); |
4437 | initrdVal = |
4438 | getInitrdVal(config, prefix, |
4439 | tmplLine, |
4440 | newKernelInitrd, |
4441 | extraInitrds, |
4442 | extraInitrdCount); |
4443 | newLine = |
4444 | addLineTmpl(new, tmplLine, newLine, |
4445 | initrdVal, config->cfi); |
4446 | free(initrdVal); |
4447 | needs &= ~NEED_INITRD; |
4448 | } |
4449 | |
4450 | } else if (isinitrd(tmplLine->type) |
4451 | && tmplLine->numElements >= 2) { |
4452 | if (needs & NEED_INITRD && new->multiboot |
4453 | && !template->multiboot |
4454 | && config->cfi->mbInitRdIsModule) { |
4455 | /* make sure we don't insert the |
4456 | * module initrd before the module |
4457 | * kernel... if we don't do it here, |
4458 | * it will be inserted following the |
4459 | * template. |
4460 | */ |
4461 | if (!needs & NEED_KERNEL) { |
4462 | char *initrdVal; |
4463 | |
4464 | initrdVal = |
4465 | getInitrdVal(config, prefix, |
4466 | tmplLine, |
4467 | newKernelInitrd, |
4468 | extraInitrds, |
4469 | extraInitrdCount); |
4470 | newLine = |
4471 | addLine(new, config->cfi, |
4472 | LT_MBMODULE, |
4473 | config-> |
4474 | secondaryIndent, |
4475 | initrdVal); |
4476 | free(initrdVal); |
4477 | needs &= ~NEED_INITRD; |
4478 | } |
4479 | } else if (needs & NEED_INITRD) { |
4480 | char *initrdVal; |
4481 | initrdVal = |
4482 | getInitrdVal(config, prefix, |
4483 | tmplLine, |
4484 | newKernelInitrd, |
4485 | extraInitrds, |
4486 | extraInitrdCount); |
4487 | newLine = |
4488 | addLineTmpl(new, tmplLine, newLine, |
4489 | initrdVal, config->cfi); |
4490 | free(initrdVal); |
4491 | needs &= ~NEED_INITRD; |
4492 | } |
4493 | |
4494 | } else if (tmplLine->type == LT_MENUENTRY && |
4495 | (needs & NEED_TITLE)) { |
4496 | requote(tmplLine, config->cfi); |
4497 | char *nkt = malloc(strlen(newKernelTitle) + 3); |
4498 | strcpy(nkt, "'"); |
4499 | strcat(nkt, newKernelTitle); |
4500 | strcat(nkt, "'"); |
4501 | newLine = |
4502 | addLineTmpl(new, tmplLine, newLine, nkt, |
4503 | config->cfi); |
4504 | free(nkt); |
4505 | needs &= ~NEED_TITLE; |
4506 | } else if (tmplLine->type == LT_TITLE && |
4507 | (needs & NEED_TITLE)) { |
4508 | if (tmplLine->numElements >= 2) { |
4509 | newLine = |
4510 | addLineTmpl(new, tmplLine, newLine, |
4511 | newKernelTitle, |
4512 | config->cfi); |
4513 | needs &= ~NEED_TITLE; |
4514 | } else if (tmplLine->numElements == 1 && |
4515 | config->cfi->titleBracketed) { |
4516 | /* addLineTmpl doesn't handle |
4517 | * titleBracketed */ |
4518 | newLine = |
4519 | addLine(new, config->cfi, LT_TITLE, |
4520 | tmplLine->indent, |
4521 | newKernelTitle); |
4522 | needs &= ~NEED_TITLE; |
4523 | } |
4524 | } else if (tmplLine->type == LT_ECHO) { |
4525 | requote(tmplLine, config->cfi); |
4526 | static const char *prefix = "'Loading "; |
4527 | if (tmplLine->numElements > 1 && |
4528 | strstr(tmplLine->elements[1].item, prefix) |
4529 | && masterLine->next |
4530 | && iskernel(masterLine->next->type)) { |
4531 | char *newTitle = |
4532 | malloc(strlen(prefix) + |
4533 | strlen(newKernelTitle) + 2); |
4534 | |
4535 | strcpy(newTitle, prefix); |
4536 | strcat(newTitle, newKernelTitle); |
4537 | strcat(newTitle, "'"); |
4538 | newLine = |
4539 | addLine(new, config->cfi, LT_ECHO, |
4540 | tmplLine->indent, newTitle); |
4541 | free(newTitle); |
4542 | } else { |
4543 | /* pass through other lines from the |
4544 | * template */ |
4545 | newLine = |
4546 | addLineTmpl(new, tmplLine, newLine, |
4547 | NULL, config->cfi); |
4548 | } |
4549 | } else if (tmplLine->type == LT_DEVTREE && |
4550 | tmplLine->numElements == 2 |
4551 | && newDevTreePath) { |
4552 | newLine = |
4553 | addLineTmpl(new, tmplLine, newLine, |
4554 | newDevTreePath + strlen(prefix), |
4555 | config->cfi); |
4556 | needs &= ~NEED_DEVTREE; |
4557 | } else if (tmplLine->type == LT_ENTRY_END |
4558 | && needs & NEED_DEVTREE) { |
4559 | const char *ndtp = newDevTreePath; |
4560 | if (!strncmp |
4561 | (newDevTreePath, prefix, strlen(prefix))) |
4562 | ndtp += strlen(prefix); |
4563 | newLine = addLine(new, config->cfi, LT_DEVTREE, |
4564 | config->secondaryIndent, |
4565 | ndtp); |
4566 | needs &= ~NEED_DEVTREE; |
4567 | newLine = |
4568 | addLineTmpl(new, tmplLine, newLine, NULL, |
4569 | config->cfi); |
4570 | } else { |
4571 | /* pass through other lines from the template */ |
4572 | newLine = |
4573 | addLineTmpl(new, tmplLine, newLine, NULL, |
4574 | config->cfi); |
4575 | } |
4576 | } |
4577 | |
4578 | } else { |
4579 | /* don't have a template, so start the entry with the |
4580 | * appropriate starting line |
4581 | */ |
4582 | switch (config->cfi->entryStart) { |
4583 | case LT_KERNEL: |
4584 | case LT_KERNEL_EFI: |
4585 | case LT_KERNEL_16: |
4586 | if (new->multiboot && config->cfi->mbHyperFirst) { |
4587 | /* fall through to LT_HYPER */ |
4588 | } else { |
4589 | newLine = addLine(new, config->cfi, |
4590 | preferredLineType(LT_KERNEL, |
4591 | config-> |
4592 | cfi), |
4593 | config->primaryIndent, |
4594 | newKernelPath + |
4595 | strlen(prefix)); |
4596 | needs &= ~NEED_KERNEL; |
4597 | break; |
4598 | } |
4599 | |
4600 | case LT_HYPER: |
4601 | newLine = addLine(new, config->cfi, LT_HYPER, |
4602 | config->primaryIndent, |
4603 | newMBKernel + strlen(prefix)); |
4604 | needs &= ~NEED_MB; |
4605 | break; |
4606 | |
4607 | case LT_MENUENTRY:{ |
4608 | char *nkt = malloc(strlen(newKernelTitle) + 3); |
4609 | strcpy(nkt, "'"); |
4610 | strcat(nkt, newKernelTitle); |
4611 | strcat(nkt, "'"); |
4612 | newLine = |
4613 | addLine(new, config->cfi, LT_MENUENTRY, |
4614 | config->primaryIndent, nkt); |
4615 | free(nkt); |
4616 | needs &= ~NEED_TITLE; |
4617 | needs |= NEED_END; |
4618 | break; |
4619 | } |
4620 | case LT_TITLE: |
4621 | if (useextlinuxmenu != 0) { // We just need useextlinuxmenu to not be zero (set above) |
4622 | char *templabel; |
4623 | int x = 0, y = 0; |
4624 | |
4625 | templabel = strdup(newKernelTitle); |
4626 | while (templabel[x]) { |
4627 | if (templabel[x] == ' ') { |
4628 | y = x; |
4629 | while (templabel[y]) { |
4630 | templabel[y] = |
4631 | templabel[y + 1]; |
4632 | y++; |
4633 | } |
4634 | } |
4635 | x++; |
4636 | } |
4637 | newLine = addLine(new, config->cfi, LT_TITLE, |
4638 | config->primaryIndent, |
4639 | templabel); |
4640 | free(templabel); |
4641 | } else { |
4642 | newLine = addLine(new, config->cfi, LT_TITLE, |
4643 | config->primaryIndent, |
4644 | newKernelTitle); |
4645 | } |
4646 | needs &= ~NEED_TITLE; |
4647 | break; |
4648 | |
4649 | default: |
4650 | abort(); |
4651 | } |
4652 | } |
4653 | |
4654 | struct singleLine *endLine = NULL; |
4655 | endLine = getLineByType(LT_ENTRY_END, new->lines); |
4656 | if (endLine) { |
4657 | removeLine(new, endLine); |
4658 | needs |= NEED_END; |
4659 | } |
4660 | |
4661 | /* add the remainder of the lines, i.e. those that either |
4662 | * weren't present in the template, or in the case of no template, |
4663 | * all the lines following the entryStart. |
4664 | */ |
4665 | if (needs & NEED_TITLE) { |
4666 | newLine = addLine(new, config->cfi, LT_TITLE, |
4667 | config->secondaryIndent, newKernelTitle); |
4668 | needs &= ~NEED_TITLE; |
4669 | } |
4670 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
4671 | newLine = addLine(new, config->cfi, LT_HYPER, |
4672 | config->secondaryIndent, |
4673 | newMBKernel + strlen(prefix)); |
4674 | needs &= ~NEED_MB; |
4675 | } |
4676 | if (needs & NEED_KERNEL) { |
4677 | newLine = addLine(new, config->cfi, |
4678 | (new->multiboot |
4679 | && getKeywordByType(LT_MBMODULE, |
4680 | config->cfi)) |
4681 | ? LT_MBMODULE : preferredLineType(LT_KERNEL, |
4682 | config-> |
4683 | cfi), |
4684 | config->secondaryIndent, |
4685 | newKernelPath + strlen(prefix)); |
4686 | needs &= ~NEED_KERNEL; |
4687 | } |
4688 | if (needs & NEED_MB) { |
4689 | newLine = addLine(new, config->cfi, LT_HYPER, |
4690 | config->secondaryIndent, |
4691 | newMBKernel + strlen(prefix)); |
4692 | needs &= ~NEED_MB; |
4693 | } |
4694 | if (needs & NEED_INITRD) { |
4695 | char *initrdVal; |
4696 | initrdVal = |
4697 | getInitrdVal(config, prefix, NULL, newKernelInitrd, |
4698 | extraInitrds, extraInitrdCount); |
4699 | newLine = |
4700 | addLine(new, config->cfi, |
4701 | (new->multiboot |
4702 | && getKeywordByType(LT_MBMODULE, config->cfi)) |
4703 | ? LT_MBMODULE : preferredLineType(LT_INITRD, |
4704 | config->cfi), |
4705 | config->secondaryIndent, initrdVal); |
4706 | free(initrdVal); |
4707 | needs &= ~NEED_INITRD; |
4708 | } |
4709 | if (needs & NEED_DEVTREE) { |
4710 | newLine = addLine(new, config->cfi, LT_DEVTREE, |
4711 | config->secondaryIndent, newDevTreePath); |
4712 | needs &= ~NEED_DEVTREE; |
4713 | } |
4714 | |
4715 | /* NEEDS_END must be last on bootloaders that need it... */ |
4716 | if (needs & NEED_END) { |
4717 | newLine = addLine(new, config->cfi, LT_ENTRY_END, |
4718 | config->secondaryIndent, NULL); |
4719 | needs &= ~NEED_END; |
4720 | } |
4721 | |
4722 | if (needs) { |
4723 | printf(_("grubby: needs=%d, aborting\n"), needs); |
4724 | abort(); |
4725 | } |
4726 | |
4727 | if (updateImage(config, indexs, prefix, newKernelArgs, NULL, |
4728 | newMBKernelArgs, NULL)) |
4729 | return 1; |
4730 | |
4731 | return 0; |
4732 | } |
4733 | |
4734 | int main(int argc, const char **argv) |
4735 | { |
4736 | poptContext optCon; |
4737 | const char *grubConfig = NULL; |
4738 | char *outputFile = NULL; |
4739 | int arg = 0; |
4740 | int flags = 0; |
4741 | int badImageOkay = 0; |
4742 | int configureGrub2 = 0; |
4743 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
4744 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
4745 | int configureExtLinux = 0; |
4746 | int bootloaderProbe = 0; |
4747 | int extraInitrdCount = 0; |
4748 | char *updateKernelPath = NULL; |
4749 | char *newKernelPath = NULL; |
4750 | char *removeKernelPath = NULL; |
4751 | char *newKernelArgs = NULL; |
4752 | char *newKernelInitrd = NULL; |
4753 | char *newKernelTitle = NULL; |
4754 | char *newDevTreePath = NULL; |
4755 | char *newMBKernel = NULL; |
4756 | char *newMBKernelArgs = NULL; |
4757 | int newIndex = 0; |
4758 | char *removeMBKernelArgs = NULL; |
4759 | char *removeMBKernel = NULL; |
4760 | char *bootPrefix = NULL; |
4761 | char *defaultKernel = NULL; |
4762 | char *removeArgs = NULL; |
4763 | char *kernelInfo = NULL; |
4764 | char *extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
4765 | char *envPath = NULL; |
4766 | const char *chptr = NULL; |
4767 | struct configFileInfo *cfi = NULL; |
4768 | struct grubConfig *config; |
4769 | struct singleEntry *template = NULL; |
4770 | int copyDefault = 0, makeDefault = 0; |
4771 | int displayDefault = 0; |
4772 | int displayDefaultIndex = 0; |
4773 | int displayDefaultTitle = 0; |
4774 | int defaultIndex = -1; |
4775 | struct poptOption options[] = { |
4776 | {"add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
4777 | _("add an entry for the specified kernel"), _("kernel-path")}, |
4778 | {"add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
4779 | _("add an entry for the specified multiboot kernel"), NULL}, |
4780 | {"args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
4781 | _("default arguments for the new kernel or new arguments for " |
4782 | "kernel being updated"), _("args")}, |
4783 | {"mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
4784 | _("default arguments for the new multiboot kernel or " |
4785 | "new arguments for multiboot kernel being updated"), NULL}, |
4786 | {"bad-image-okay", 0, 0, &badImageOkay, 0, |
4787 | _ |
4788 | ("don't sanity check images in boot entries (for testing only)"), |
4789 | NULL}, |
4790 | {"boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
4791 | _ |
4792 | ("filestystem which contains /boot directory (for testing only)"), |
4793 | _("bootfs")}, |
4794 | #if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__) |
4795 | {"bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
4796 | _("check which bootloader is installed on boot sector")}, |
4797 | #endif |
4798 | {"config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
4799 | _("path to grub config file to update (\"-\" for stdin)"), |
4800 | _("path")}, |
4801 | {"copy-default", 0, 0, ©Default, 0, |
4802 | _("use the default boot entry as a template for the new entry " |
4803 | "being added; if the default is not a linux image, or if " |
4804 | "the kernel referenced by the default image does not exist, " |
4805 | "the first linux entry whose kernel does exist is used as the " |
4806 | "template"), NULL}, |
4807 | {"debug", 0, 0, &debug, 0, |
4808 | _("print debugging information for failures")}, |
4809 | {"default-kernel", 0, 0, &displayDefault, 0, |
4810 | _("display the path of the default kernel")}, |
4811 | {"default-index", 0, 0, &displayDefaultIndex, 0, |
4812 | _("display the index of the default kernel")}, |
4813 | {"default-title", 0, 0, &displayDefaultTitle, 0, |
4814 | _("display the title of the default kernel")}, |
4815 | {"devtree", 0, POPT_ARG_STRING, &newDevTreePath, 0, |
4816 | _("device tree file for new stanza"), _("dtb-path")}, |
4817 | {"devtreedir", 0, POPT_ARG_STRING, &newDevTreePath, 0, |
4818 | _("device tree directory for new stanza"), _("dtb-path")}, |
4819 | {"elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
4820 | _("configure elilo bootloader")}, |
4821 | {"efi", 0, POPT_ARG_NONE, &isEfi, 0, |
4822 | _("force grub2 stanzas to use efi")}, |
4823 | {"env", 0, POPT_ARG_STRING, &envPath, 0, |
4824 | _("path for environment data"), |
4825 | _("path")}, |
4826 | {"extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
4827 | _("configure extlinux bootloader (from syslinux)")}, |
4828 | {"grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
4829 | _("configure grub bootloader")}, |
4830 | {"grub2", 0, POPT_ARG_NONE, &configureGrub2, 0, |
4831 | _("configure grub2 bootloader")}, |
4832 | {"info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
4833 | _("display boot information for specified kernel"), |
4834 | _("kernel-path")}, |
4835 | {"initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
4836 | _("initrd image for the new kernel"), _("initrd-path")}, |
4837 | {"extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
4838 | _ |
4839 | ("auxiliary initrd image for things other than the new kernel"), |
4840 | _("initrd-path")}, |
4841 | {"lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
4842 | _("configure lilo bootloader")}, |
4843 | {"make-default", 0, 0, &makeDefault, 0, |
4844 | _("make the newly added entry the default boot entry"), NULL}, |
4845 | {"output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
4846 | _("path to output updated config file (\"-\" for stdout)"), |
4847 | _("path")}, |
4848 | {"remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
4849 | _("remove kernel arguments"), NULL}, |
4850 | {"remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
4851 | _("remove multiboot kernel arguments"), NULL}, |
4852 | {"remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
4853 | _("remove all entries for the specified kernel"), |
4854 | _("kernel-path")}, |
4855 | {"remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
4856 | _("remove all entries for the specified multiboot kernel"), |
4857 | NULL}, |
4858 | {"set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
4859 | _("make the first entry referencing the specified kernel " |
4860 | "the default"), _("kernel-path")}, |
4861 | {"set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0, |
4862 | _("make the given entry index the default entry"), |
4863 | _("entry-index")}, |
4864 | {"set-index", 0, POPT_ARG_INT, &newIndex, 0, |
4865 | _("use the given index when creating a new entry"), |
4866 | _("entry-index")}, |
4867 | {"silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
4868 | _("configure silo bootloader")}, |
4869 | {"title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
4870 | _("title to use for the new kernel entry"), _("entry-title")}, |
4871 | {"update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
4872 | _("updated information for the specified kernel"), |
4873 | _("kernel-path")}, |
4874 | {"version", 'v', 0, NULL, 'v', |
4875 | _("print the version of this program and exit"), NULL}, |
4876 | {"yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
4877 | _("configure yaboot bootloader")}, |
4878 | {"zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
4879 | _("configure zipl bootloader")}, |
4880 | POPT_AUTOHELP {0, 0, 0, 0, 0} |
4881 | }; |
4882 | |
4883 | useextlinuxmenu = 0; |
4884 | |
4885 | int i = 0; |
4886 | for (int j = 1; j < argc; j++) |
4887 | i += strlen(argv[j]) + 1; |
4888 | saved_command_line = malloc(i); |
4889 | if (!saved_command_line) { |
4890 | fprintf(stderr, "grubby: %m\n"); |
4891 | exit(1); |
4892 | } |
4893 | saved_command_line[0] = '\0'; |
4894 | for (int j = 1; j < argc; j++) { |
4895 | strcat(saved_command_line, argv[j]); |
4896 | strncat(saved_command_line, j == argc - 1 ? "" : " ", 1); |
4897 | } |
4898 | |
4899 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
4900 | poptReadDefaultConfig(optCon, 1); |
4901 | |
4902 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
4903 | switch (arg) { |
4904 | case 'v': |
4905 | printf("grubby version %s\n", VERSION); |
4906 | exit(0); |
4907 | break; |
4908 | case 'i': |
4909 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { |
4910 | extraInitrds[extraInitrdCount++] = |
4911 | strdup(poptGetOptArg(optCon)); |
4912 | } else { |
4913 | fprintf(stderr, |
4914 | _ |
4915 | ("grubby: extra initrd maximum is %d\n"), |
4916 | extraInitrdCount); |
4917 | return 1; |
4918 | } |
4919 | break; |
4920 | } |
4921 | } |
4922 | |
4923 | if (arg < -1) { |
4924 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
4925 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
4926 | poptStrerror(arg)); |
4927 | return 1; |
4928 | } |
4929 | |
4930 | if ((chptr = poptGetArg(optCon))) { |
4931 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
4932 | return 1; |
4933 | } |
4934 | |
4935 | if ((configureLilo + configureGrub2 + configureGrub + configureELilo + |
4936 | configureYaboot + configureSilo + configureZipl + |
4937 | configureExtLinux) > 1) { |
4938 | fprintf(stderr, |
4939 | _("grubby: cannot specify multiple bootloaders\n")); |
4940 | return 1; |
4941 | } else if (bootloaderProbe && grubConfig) { |
4942 | fprintf(stderr, |
4943 | _ |
4944 | ("grubby: cannot specify config file with --bootloader-probe\n")); |
4945 | return 1; |
4946 | } else if (configureGrub2) { |
4947 | cfi = &grub2ConfigType; |
4948 | if (envPath) |
4949 | cfi->envFile = envPath; |
4950 | } else if (configureLilo) { |
4951 | cfi = &liloConfigType; |
4952 | } else if (configureGrub) { |
4953 | cfi = &grubConfigType; |
4954 | } else if (configureELilo) { |
4955 | cfi = &eliloConfigType; |
4956 | } else if (configureYaboot) { |
4957 | cfi = &yabootConfigType; |
4958 | } else if (configureSilo) { |
4959 | cfi = &siloConfigType; |
4960 | } else if (configureZipl) { |
4961 | cfi = &ziplConfigType; |
4962 | } else if (configureExtLinux) { |
4963 | cfi = &extlinuxConfigType; |
4964 | useextlinuxmenu = 1; |
4965 | } |
4966 | |
4967 | if (!cfi) { |
4968 | if (grub2FindConfig(&grub2ConfigType)) { |
4969 | cfi = &grub2ConfigType; |
4970 | if (envPath) |
4971 | cfi->envFile = envPath; |
4972 | } else |
4973 | #ifdef __ia64__ |
4974 | cfi = &eliloConfigType; |
4975 | #elif __powerpc__ |
4976 | cfi = &yabootConfigType; |
4977 | #elif __sparc__ |
4978 | cfi = &siloConfigType; |
4979 | #elif __s390__ |
4980 | cfi = &ziplConfigType; |
4981 | #elif __s390x__ |
4982 | cfi = &ziplConfigtype; |
4983 | #else |
4984 | cfi = &grubConfigType; |
4985 | #endif |
4986 | } |
4987 | |
4988 | if (!grubConfig) { |
4989 | if (cfi->findConfig) |
4990 | grubConfig = cfi->findConfig(cfi); |
4991 | if (!grubConfig) |
4992 | grubConfig = cfi->defaultConfig; |
4993 | } |
4994 | |
4995 | if (bootloaderProbe && (displayDefault || kernelInfo || |
4996 | newKernelPath || removeKernelPath || makeDefault |
4997 | || defaultKernel || displayDefaultIndex |
4998 | || displayDefaultTitle |
4999 | || (defaultIndex >= 0))) { |
5000 | fprintf(stderr, |
5001 | _("grubby: --bootloader-probe may not be used with " |
5002 | "specified option")); |
5003 | return 1; |
5004 | } |
5005 | |
5006 | if ((displayDefault || kernelInfo) && (newKernelPath || |
5007 | removeKernelPath)) { |
5008 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
5009 | "be used when adding or removing kernels\n")); |
5010 | return 1; |
5011 | } |
5012 | |
5013 | if (newKernelPath && !newKernelTitle) { |
5014 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
5015 | return 1; |
5016 | } else if (!newKernelPath && (copyDefault || |
5017 | (newKernelInitrd && !updateKernelPath) || |
5018 | makeDefault || extraInitrdCount > 0)) { |
5019 | fprintf(stderr, _("grubby: kernel path expected\n")); |
5020 | return 1; |
5021 | } |
5022 | |
5023 | if (newKernelPath && updateKernelPath) { |
5024 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
5025 | "not be used together")); |
5026 | return 1; |
5027 | } |
5028 | |
5029 | if (makeDefault && defaultKernel) { |
5030 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
5031 | "may not be used together\n")); |
5032 | return 1; |
5033 | } else if (defaultKernel && removeKernelPath && |
5034 | !strcmp(defaultKernel, removeKernelPath)) { |
5035 | fprintf(stderr, |
5036 | _("grubby: cannot make removed kernel the default\n")); |
5037 | return 1; |
5038 | } else if (defaultKernel && newKernelPath && |
5039 | !strcmp(defaultKernel, newKernelPath)) { |
5040 | makeDefault = 1; |
5041 | defaultKernel = NULL; |
5042 | } else if (defaultKernel && (defaultIndex >= 0)) { |
5043 | fprintf(stderr, |
5044 | _("grubby: --set-default and --set-default-index " |
5045 | "may not be used together\n")); |
5046 | return 1; |
5047 | } |
5048 | |
5049 | if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) { |
5050 | fprintf(stderr, |
5051 | _("grubby: output file must be specified if stdin " |
5052 | "is used\n")); |
5053 | return 1; |
5054 | } |
5055 | |
5056 | if (!removeKernelPath && !newKernelPath && !displayDefault |
5057 | && !defaultKernel && !kernelInfo && !bootloaderProbe |
5058 | && !updateKernelPath && !removeMBKernel && !displayDefaultIndex |
5059 | && !displayDefaultTitle && (defaultIndex == -1)) { |
5060 | fprintf(stderr, _("grubby: no action specified\n")); |
5061 | return 1; |
5062 | } |
5063 | |
5064 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
5065 | |
5066 | if (cfi->needsBootPrefix) { |
5067 | if (!bootPrefix) { |
5068 | bootPrefix = findBootPrefix(); |
5069 | if (!bootPrefix) |
5070 | return 1; |
5071 | } else { |
5072 | /* this shouldn't end with a / */ |
5073 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
5074 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
5075 | } |
5076 | } else { |
5077 | bootPrefix = ""; |
5078 | } |
5079 | |
5080 | if (!cfi->mbAllowExtraInitRds && extraInitrdCount > 0) { |
5081 | fprintf(stderr, |
5082 | _("grubby: %s doesn't allow multiple initrds\n"), |
5083 | cfi->defaultConfig); |
5084 | return 1; |
5085 | } |
5086 | |
5087 | if (bootloaderProbe) { |
5088 | int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0; |
5089 | struct grubConfig *lconfig, *gconfig, *yconfig, *econfig; |
5090 | |
5091 | const char *grub2config = grub2FindConfig(&grub2ConfigType); |
5092 | if (grub2config) { |
5093 | gconfig = readConfig(grub2config, &grub2ConfigType); |
5094 | if (!gconfig) |
5095 | gr2c = 1; |
5096 | else |
5097 | gr2c = checkForGrub2(gconfig); |
5098 | } |
5099 | |
5100 | const char *grubconfig = grubFindConfig(&grubConfigType); |
5101 | if (!access(grubconfig, F_OK)) { |
5102 | gconfig = readConfig(grubconfig, &grubConfigType); |
5103 | if (!gconfig) |
5104 | grc = 1; |
5105 | else |
5106 | grc = checkForGrub(gconfig); |
5107 | } |
5108 | |
5109 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
5110 | lconfig = |
5111 | readConfig(liloConfigType.defaultConfig, |
5112 | &liloConfigType); |
5113 | if (!lconfig) |
5114 | lrc = 1; |
5115 | else |
5116 | lrc = checkForLilo(lconfig); |
5117 | } |
5118 | |
5119 | if (!access(eliloConfigType.defaultConfig, F_OK)) { |
5120 | econfig = readConfig(eliloConfigType.defaultConfig, |
5121 | &eliloConfigType); |
5122 | if (!econfig) |
5123 | erc = 1; |
5124 | else |
5125 | erc = checkForElilo(econfig); |
5126 | } |
5127 | |
5128 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
5129 | lconfig = |
5130 | readConfig(extlinuxConfigType.defaultConfig, |
5131 | &extlinuxConfigType); |
5132 | if (!lconfig) |
5133 | extrc = 1; |
5134 | else |
5135 | extrc = checkForExtLinux(lconfig); |
5136 | } |
5137 | |
5138 | if (!access(yabootConfigType.defaultConfig, F_OK)) { |
5139 | yconfig = readConfig(yabootConfigType.defaultConfig, |
5140 | &yabootConfigType); |
5141 | if (!yconfig) |
5142 | yrc = 1; |
5143 | else |
5144 | yrc = checkForYaboot(yconfig); |
5145 | } |
5146 | |
5147 | if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1 |
5148 | || erc == 1) |
5149 | return 1; |
5150 | |
5151 | if (lrc == 2) |
5152 | printf("lilo\n"); |
5153 | if (gr2c == 2) |
5154 | printf("grub2\n"); |
5155 | if (grc == 2) |
5156 | printf("grub\n"); |
5157 | if (extrc == 2) |
5158 | printf("extlinux\n"); |
5159 | if (yrc == 2) |
5160 | printf("yaboot\n"); |
5161 | if (erc == 2) |
5162 | printf("elilo\n"); |
5163 | |
5164 | return 0; |
5165 | } |
5166 | |
5167 | if (grubConfig == NULL) { |
5168 | printf("Could not find bootloader configuration file.\n"); |
5169 | exit(1); |
5170 | } |
5171 | |
5172 | config = readConfig(grubConfig, cfi); |
5173 | if (!config) |
5174 | return 1; |
5175 | |
5176 | if (displayDefault) { |
5177 | struct singleLine *line; |
5178 | struct singleEntry *entry; |
5179 | char *rootspec; |
5180 | |
5181 | if (config->defaultImage == -1) |
5182 | return 0; |
5183 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
5184 | cfi->defaultIsSaved) |
5185 | config->defaultImage = 0; |
5186 | entry = findEntryByIndex(config, config->defaultImage); |
5187 | if (!entry) |
5188 | return 0; |
5189 | if (!suitableImage(entry, bootPrefix, 0, flags)) |
5190 | return 0; |
5191 | |
5192 | line = |
5193 | getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | |
5194 | LT_KERNEL_16, entry->lines); |
5195 | if (!line) |
5196 | return 0; |
5197 | |
5198 | rootspec = getRootSpecifier(line->elements[1].item); |
5199 | printf("%s%s\n", bootPrefix, line->elements[1].item + |
5200 | ((rootspec != NULL) ? strlen(rootspec) : 0)); |
5201 | |
5202 | return 0; |
5203 | |
5204 | } else if (displayDefaultTitle) { |
5205 | struct singleLine *line; |
5206 | struct singleEntry *entry; |
5207 | |
5208 | if (config->defaultImage == -1) |
5209 | return 0; |
5210 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
5211 | cfi->defaultIsSaved) |
5212 | config->defaultImage = 0; |
5213 | entry = findEntryByIndex(config, config->defaultImage); |
5214 | if (!entry) |
5215 | return 0; |
5216 | |
5217 | if (!configureGrub2) { |
5218 | char *title; |
5219 | line = getLineByType(LT_TITLE, entry->lines); |
5220 | if (!line) |
5221 | return 0; |
5222 | title = extractTitle(config, line); |
5223 | if (!title) |
5224 | return 0; |
5225 | printf("%s\n", title); |
5226 | free(title); |
5227 | } else { |
5228 | char *title; |
5229 | |
5230 | dbgPrintf |
5231 | ("This is GRUB2, default title is embeded in menuentry\n"); |
5232 | line = getLineByType(LT_MENUENTRY, entry->lines); |
5233 | if (!line) |
5234 | return 0; |
5235 | title = grub2ExtractTitle(line); |
5236 | if (title) |
5237 | printf("%s\n", title); |
5238 | } |
5239 | return 0; |
5240 | |
5241 | } else if (displayDefaultIndex) { |
5242 | if (config->defaultImage == -1) |
5243 | return 0; |
5244 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
5245 | cfi->defaultIsSaved) |
5246 | config->defaultImage = 0; |
5247 | printf("%i\n", config->defaultImage); |
5248 | return 0; |
5249 | |
5250 | } else if (kernelInfo) |
5251 | return displayInfo(config, kernelInfo, bootPrefix); |
5252 | |
5253 | if (copyDefault) { |
5254 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
5255 | if (!template) |
5256 | return 1; |
5257 | } |
5258 | |
5259 | markRemovedImage(config, removeKernelPath, bootPrefix); |
5260 | markRemovedImage(config, removeMBKernel, bootPrefix); |
5261 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, |
5262 | makeDefault, bootPrefix, flags, defaultIndex); |
5263 | setFallbackImage(config, newKernelPath != NULL); |
5264 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
5265 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) |
5266 | return 1; |
5267 | if (updateKernelPath && newKernelInitrd) { |
5268 | if (newMBKernel) { |
5269 | if (addMBInitrd(config, newMBKernel, updateKernelPath, |
5270 | bootPrefix, newKernelInitrd, |
5271 | newKernelTitle)) |
5272 | return 1; |
5273 | } else { |
5274 | if (updateInitrd(config, updateKernelPath, bootPrefix, |
5275 | newKernelInitrd, newKernelTitle)) |
5276 | return 1; |
5277 | } |
5278 | } |
5279 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
5280 | newKernelTitle, newKernelArgs, newKernelInitrd, |
5281 | (const char **)extraInitrds, extraInitrdCount, |
5282 | newMBKernel, newMBKernelArgs, newDevTreePath, |
5283 | newIndex)) |
5284 | return 1; |
5285 | |
5286 | if (numEntries(config) == 0) { |
5287 | fprintf(stderr, |
5288 | _("grubby: doing this would leave no kernel entries. " |
5289 | "Not writing out new config.\n")); |
5290 | return 1; |
5291 | } |
5292 | |
5293 | if (!outputFile) |
5294 | outputFile = (char *)grubConfig; |
5295 | |
5296 | return writeConfig(config, outputFile, bootPrefix); |
5297 | } |