Contents of /trunk/grubby/grubby.c
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Mon Oct 21 14:01:48 2013 UTC (10 years, 11 months ago) by niro
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Mon Oct 21 14:01:48 2013 UTC (10 years, 11 months ago) by niro
File MIME type: text/plain
File size: 124814 byte(s)
Attempt to compensate for shell quoting in grub names.
1 | /* |
2 | * grubby.c |
3 | * |
4 | * Copyright (C) 2001-2008 Red Hat, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License as published by |
9 | * the Free Software Foundation; either version 2 of the License, or |
10 | * (at your option) any later version. |
11 | * |
12 | * This program is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * GNU General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU General Public License |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
19 | */ |
20 | |
21 | #ifndef _GNU_SOURCE |
22 | #define _GNU_SOURCE |
23 | #endif |
24 | #include <ctype.h> |
25 | #include <errno.h> |
26 | #include <fcntl.h> |
27 | #include <mntent.h> |
28 | #include <popt.h> |
29 | #include <stdarg.h> |
30 | #include <stdlib.h> |
31 | #include <string.h> |
32 | #include <sys/stat.h> |
33 | #include <unistd.h> |
34 | #include <libgen.h> |
35 | #include <execinfo.h> |
36 | #include <signal.h> |
37 | #include <blkid/blkid.h> |
38 | |
39 | #include "log.h" |
40 | |
41 | #ifndef DEBUG |
42 | #define DEBUG 0 |
43 | #endif |
44 | |
45 | #if DEBUG |
46 | #define dbgPrintf(format, args...) fprintf(stderr, format , ## args) |
47 | #else |
48 | #define dbgPrintf(format, args...) |
49 | #endif |
50 | |
51 | int debug = 0; /* Currently just for template debugging */ |
52 | |
53 | #define _(A) (A) |
54 | |
55 | #define MAX_EXTRA_INITRDS 16 /* code segment checked by --bootloader-probe */ |
56 | #define CODE_SEG_SIZE 128 /* code segment checked by --bootloader-probe */ |
57 | |
58 | #define NOOP_OPCODE 0x90 |
59 | #define JMP_SHORT_OPCODE 0xeb |
60 | |
61 | int isEfi = 0; |
62 | |
63 | char *saved_command_line = NULL; |
64 | |
65 | /* comments get lumped in with indention */ |
66 | struct lineElement { |
67 | char * item; |
68 | char * indent; |
69 | }; |
70 | |
71 | enum lineType_e { |
72 | LT_WHITESPACE = 1 << 0, |
73 | LT_TITLE = 1 << 1, |
74 | LT_KERNEL = 1 << 2, |
75 | LT_INITRD = 1 << 3, |
76 | LT_HYPER = 1 << 4, |
77 | LT_DEFAULT = 1 << 5, |
78 | LT_MBMODULE = 1 << 6, |
79 | LT_ROOT = 1 << 7, |
80 | LT_FALLBACK = 1 << 8, |
81 | LT_KERNELARGS = 1 << 9, |
82 | LT_BOOT = 1 << 10, |
83 | LT_BOOTROOT = 1 << 11, |
84 | LT_LBA = 1 << 12, |
85 | LT_OTHER = 1 << 13, |
86 | LT_GENERIC = 1 << 14, |
87 | LT_ECHO = 1 << 16, |
88 | LT_MENUENTRY = 1 << 17, |
89 | LT_ENTRY_END = 1 << 18, |
90 | LT_SET_VARIABLE = 1 << 19, |
91 | LT_KERNEL_EFI = 1 << 20, |
92 | LT_INITRD_EFI = 1 << 21, |
93 | LT_UNKNOWN = 1 << 22, |
94 | }; |
95 | |
96 | struct singleLine { |
97 | char * indent; |
98 | int numElements; |
99 | struct lineElement * elements; |
100 | struct singleLine * next; |
101 | enum lineType_e type; |
102 | }; |
103 | |
104 | struct singleEntry { |
105 | struct singleLine * lines; |
106 | int skip; |
107 | int multiboot; |
108 | struct singleEntry * next; |
109 | }; |
110 | |
111 | #define GRUBBY_BADIMAGE_OKAY (1 << 0) |
112 | |
113 | #define GRUB_CONFIG_NO_DEFAULT (1 << 0) /* don't write out default=0 */ |
114 | |
115 | /* These defines are (only) used in addNewKernel() */ |
116 | #define NEED_KERNEL (1 << 0) |
117 | #define NEED_INITRD (1 << 1) |
118 | #define NEED_TITLE (1 << 2) |
119 | #define NEED_ARGS (1 << 3) |
120 | #define NEED_MB (1 << 4) |
121 | #define NEED_END (1 << 5) |
122 | |
123 | #define MAIN_DEFAULT (1 << 0) |
124 | #define DEFAULT_SAVED -2 |
125 | #define DEFAULT_SAVED_GRUB2 -3 |
126 | |
127 | struct keywordTypes { |
128 | char * key; |
129 | enum lineType_e type; |
130 | char nextChar; |
131 | char separatorChar; |
132 | }; |
133 | |
134 | struct configFileInfo; |
135 | |
136 | typedef const char *(*findConfigFunc)(struct configFileInfo *); |
137 | typedef const int (*writeLineFunc)(struct configFileInfo *, |
138 | struct singleLine *line); |
139 | typedef char *(*getEnvFunc)(struct configFileInfo *, char *name); |
140 | typedef int (*setEnvFunc)(struct configFileInfo *, char *name, char *value); |
141 | |
142 | struct configFileInfo { |
143 | char * defaultConfig; |
144 | findConfigFunc findConfig; |
145 | writeLineFunc writeLine; |
146 | getEnvFunc getEnv; |
147 | setEnvFunc setEnv; |
148 | struct keywordTypes * keywords; |
149 | int caseInsensitive; |
150 | int defaultIsIndex; |
151 | int defaultIsVariable; |
152 | int defaultSupportSaved; |
153 | int defaultIsSaved; |
154 | enum lineType_e entryStart; |
155 | enum lineType_e entryEnd; |
156 | int needsBootPrefix; |
157 | int argsInQuotes; |
158 | int maxTitleLength; |
159 | int titleBracketed; |
160 | int titlePosition; |
161 | int mbHyperFirst; |
162 | int mbInitRdIsModule; |
163 | int mbConcatArgs; |
164 | int mbAllowExtraInitRds; |
165 | char *envFile; |
166 | }; |
167 | |
168 | struct keywordTypes grubKeywords[] = { |
169 | { "title", LT_TITLE, ' ' }, |
170 | { "root", LT_BOOTROOT, ' ' }, |
171 | { "default", LT_DEFAULT, ' ' }, |
172 | { "fallback", LT_FALLBACK, ' ' }, |
173 | { "kernel", LT_KERNEL, ' ' }, |
174 | { "initrd", LT_INITRD, ' ', ' ' }, |
175 | { "module", LT_MBMODULE, ' ' }, |
176 | { "kernel", LT_HYPER, ' ' }, |
177 | { NULL, 0, 0 }, |
178 | }; |
179 | |
180 | const char *grubFindConfig(struct configFileInfo *cfi) { |
181 | static const char *configFiles[] = { |
182 | "/boot/grub/grub.conf", |
183 | "/boot/grub/menu.lst", |
184 | "/etc/grub.conf", |
185 | NULL |
186 | }; |
187 | static int i = -1; |
188 | |
189 | if (i == -1) { |
190 | for (i = 0; configFiles[i] != NULL; i++) { |
191 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
192 | if (!access(configFiles[i], R_OK)) { |
193 | dbgPrintf("found\n"); |
194 | return configFiles[i]; |
195 | } |
196 | dbgPrintf("not found\n"); |
197 | } |
198 | } |
199 | return configFiles[i]; |
200 | } |
201 | |
202 | struct configFileInfo grubConfigType = { |
203 | .findConfig = grubFindConfig, |
204 | .keywords = grubKeywords, |
205 | .defaultIsIndex = 1, |
206 | .defaultSupportSaved = 1, |
207 | .entryStart = LT_TITLE, |
208 | .needsBootPrefix = 1, |
209 | .mbHyperFirst = 1, |
210 | .mbInitRdIsModule = 1, |
211 | .mbAllowExtraInitRds = 1, |
212 | }; |
213 | |
214 | struct keywordTypes grub2Keywords[] = { |
215 | { "menuentry", LT_MENUENTRY, ' ' }, |
216 | { "}", LT_ENTRY_END, ' ' }, |
217 | { "echo", LT_ECHO, ' ' }, |
218 | { "set", LT_SET_VARIABLE,' ', '=' }, |
219 | { "root", LT_BOOTROOT, ' ' }, |
220 | { "default", LT_DEFAULT, ' ' }, |
221 | { "fallback", LT_FALLBACK, ' ' }, |
222 | { "linux", LT_KERNEL, ' ' }, |
223 | { "linuxefi", LT_KERNEL_EFI, ' ' }, |
224 | { "initrd", LT_INITRD, ' ', ' ' }, |
225 | { "initrdefi", LT_INITRD_EFI, ' ', ' ' }, |
226 | { "module", LT_MBMODULE, ' ' }, |
227 | { "kernel", LT_HYPER, ' ' }, |
228 | { NULL, 0, 0 }, |
229 | }; |
230 | |
231 | const char *grub2FindConfig(struct configFileInfo *cfi) { |
232 | static const char *configFiles[] = { |
233 | "/boot/grub/grub-efi.cfg", |
234 | "/boot/grub/grub.cfg", |
235 | NULL |
236 | }; |
237 | static int i = -1; |
238 | static const char *grub_cfg = "/boot/grub/grub.cfg"; |
239 | int rc = -1; |
240 | |
241 | if (i == -1) { |
242 | for (i = 0; configFiles[i] != NULL; i++) { |
243 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
244 | if ((rc = access(configFiles[i], R_OK))) { |
245 | if (errno == EACCES) { |
246 | printf("Unable to access bootloader configuration file " |
247 | "\"%s\": %m\n", configFiles[i]); |
248 | exit(1); |
249 | } |
250 | continue; |
251 | } else { |
252 | dbgPrintf("found\n"); |
253 | return configFiles[i]; |
254 | } |
255 | } |
256 | } |
257 | |
258 | /* Ubuntu renames grub2 to grub, so check for the grub.d directory |
259 | * that isn't in grub1, and if it exists, return the config file path |
260 | * that they use. */ |
261 | if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) { |
262 | dbgPrintf("found\n"); |
263 | return grub_cfg; |
264 | } |
265 | |
266 | dbgPrintf("not found\n"); |
267 | return configFiles[i]; |
268 | } |
269 | |
270 | /* kind of hacky. It'll give the first 1024 bytes, ish. */ |
271 | static char *grub2GetEnv(struct configFileInfo *info, char *name) |
272 | { |
273 | static char buf[1025]; |
274 | char *s = NULL; |
275 | char *ret = NULL; |
276 | char *envFile = info->envFile ? info->envFile : "/boot/grub2/grubenv"; |
277 | int rc = asprintf(&s, "grub2-editenv %s list | grep '^%s='", envFile, name); |
278 | |
279 | if (rc < 0) |
280 | return NULL; |
281 | |
282 | FILE *f = popen(s, "r"); |
283 | if (!f) |
284 | goto out; |
285 | |
286 | memset(buf, '\0', sizeof (buf)); |
287 | ret = fgets(buf, 1024, f); |
288 | pclose(f); |
289 | |
290 | if (ret) { |
291 | ret += strlen(name) + 1; |
292 | ret[strlen(ret) - 1] = '\0'; |
293 | } |
294 | dbgPrintf("grub2GetEnv(%s): %s\n", name, ret); |
295 | out: |
296 | free(s); |
297 | return ret; |
298 | } |
299 | |
300 | static int sPopCount(const char *s, const char *c) |
301 | { |
302 | int ret = 0; |
303 | if (!s) |
304 | return -1; |
305 | for (int i = 0; s[i] != '\0'; i++) |
306 | for (int j = 0; c[j] != '\0'; j++) |
307 | if (s[i] == c[j]) |
308 | ret++; |
309 | return ret; |
310 | } |
311 | |
312 | static char *shellEscape(const char *s) |
313 | { |
314 | int l = strlen(s) + sPopCount(s, "'") * 2; |
315 | |
316 | char *ret = calloc(l+1, sizeof (*ret)); |
317 | if (!ret) |
318 | return NULL; |
319 | for (int i = 0, j = 0; s[i] != '\0'; i++, j++) { |
320 | if (s[i] == '\'') |
321 | ret[j++] = '\\'; |
322 | ret[j] = s[i]; |
323 | } |
324 | return ret; |
325 | } |
326 | |
327 | static void unquote(char *s) |
328 | { |
329 | int l = strlen(s); |
330 | |
331 | if ((s[l-1] == '\'' && s[0] == '\'') || (s[l-1] == '"' && s[0] == '"')) { |
332 | memmove(s, s+1, l-2); |
333 | s[l-2] = '\0'; |
334 | } |
335 | } |
336 | |
337 | static int grub2SetEnv(struct configFileInfo *info, char *name, char *value) |
338 | { |
339 | char *s = NULL; |
340 | int rc = 0; |
341 | char *envFile = info->envFile ? info->envFile : "/boot/grub2/grubenv"; |
342 | |
343 | unquote(value); |
344 | value = shellEscape(value); |
345 | if (!value) |
346 | return -1; |
347 | |
348 | rc = asprintf(&s, "grub2-editenv %s set '%s=%s'", envFile, name, value); |
349 | free(value); |
350 | if (rc <0) |
351 | return -1; |
352 | |
353 | dbgPrintf("grub2SetEnv(%s): %s\n", name, s); |
354 | rc = system(s); |
355 | free(s); |
356 | return rc; |
357 | } |
358 | |
359 | /* this is a gigantic hack to avoid clobbering grub2 variables... */ |
360 | static int is_special_grub2_variable(const char *name) |
361 | { |
362 | if (!strcmp(name,"\"${next_entry}\"")) |
363 | return 1; |
364 | if (!strcmp(name,"\"${prev_saved_entry}\"")) |
365 | return 1; |
366 | return 0; |
367 | } |
368 | |
369 | int sizeOfSingleLine(struct singleLine * line) { |
370 | int count = 0; |
371 | |
372 | for (int i = 0; i < line->numElements; i++) { |
373 | int indentSize = 0; |
374 | |
375 | count = count + strlen(line->elements[i].item); |
376 | |
377 | indentSize = strlen(line->elements[i].indent); |
378 | if (indentSize > 0) |
379 | count = count + indentSize; |
380 | else |
381 | /* be extra safe and add room for whitespaces */ |
382 | count = count + 1; |
383 | } |
384 | |
385 | /* room for trailing terminator */ |
386 | count = count + 1; |
387 | |
388 | return count; |
389 | } |
390 | |
391 | static int isquote(char q) |
392 | { |
393 | if (q == '\'' || q == '\"') |
394 | return 1; |
395 | return 0; |
396 | } |
397 | |
398 | static int iskernel(enum lineType_e type) { |
399 | return (type == LT_KERNEL || type == LT_KERNEL_EFI); |
400 | } |
401 | |
402 | static int isinitrd(enum lineType_e type) { |
403 | return (type == LT_INITRD || type == LT_INITRD_EFI); |
404 | } |
405 | |
406 | char *grub2ExtractTitle(struct singleLine * line) { |
407 | char * current; |
408 | char * current_indent; |
409 | int current_len; |
410 | int current_indent_len; |
411 | int i; |
412 | |
413 | /* bail out if line does not start with menuentry */ |
414 | if (strcmp(line->elements[0].item, "menuentry")) |
415 | return NULL; |
416 | |
417 | i = 1; |
418 | current = line->elements[i].item; |
419 | current_len = strlen(current); |
420 | |
421 | /* if second word is quoted, strip the quotes and return single word */ |
422 | if (isquote(*current) && isquote(current[current_len - 1])) { |
423 | char *tmp; |
424 | |
425 | tmp = strdup(current); |
426 | *(tmp + current_len - 1) = '\0'; |
427 | return ++tmp; |
428 | } |
429 | |
430 | /* if no quotes, return second word verbatim */ |
431 | if (!isquote(*current)) |
432 | return current; |
433 | |
434 | /* second element start with a quote, so we have to find the element |
435 | * whose last character is also quote (assuming it's the closing one) */ |
436 | int resultMaxSize; |
437 | char * result; |
438 | |
439 | resultMaxSize = sizeOfSingleLine(line); |
440 | result = malloc(resultMaxSize); |
441 | snprintf(result, resultMaxSize, "%s", ++current); |
442 | |
443 | i++; |
444 | for (; i < line->numElements; ++i) { |
445 | current = line->elements[i].item; |
446 | current_len = strlen(current); |
447 | current_indent = line->elements[i].indent; |
448 | current_indent_len = strlen(current_indent); |
449 | |
450 | strncat(result, current_indent, current_indent_len); |
451 | if (!isquote(current[current_len-1])) { |
452 | strncat(result, current, current_len); |
453 | } else { |
454 | strncat(result, current, current_len - 1); |
455 | break; |
456 | } |
457 | } |
458 | return result; |
459 | } |
460 | |
461 | struct configFileInfo grub2ConfigType = { |
462 | .findConfig = grub2FindConfig, |
463 | .getEnv = grub2GetEnv, |
464 | .setEnv = grub2SetEnv, |
465 | .keywords = grub2Keywords, |
466 | .defaultIsIndex = 1, |
467 | .defaultSupportSaved = 1, |
468 | .defaultIsVariable = 1, |
469 | .entryStart = LT_MENUENTRY, |
470 | .entryEnd = LT_ENTRY_END, |
471 | .titlePosition = 1, |
472 | .needsBootPrefix = 1, |
473 | .mbHyperFirst = 1, |
474 | .mbInitRdIsModule = 1, |
475 | .mbAllowExtraInitRds = 1, |
476 | }; |
477 | |
478 | struct keywordTypes yabootKeywords[] = { |
479 | { "label", LT_TITLE, '=' }, |
480 | { "root", LT_ROOT, '=' }, |
481 | { "default", LT_DEFAULT, '=' }, |
482 | { "image", LT_KERNEL, '=' }, |
483 | { "bsd", LT_GENERIC, '=' }, |
484 | { "macos", LT_GENERIC, '=' }, |
485 | { "macosx", LT_GENERIC, '=' }, |
486 | { "magicboot", LT_GENERIC, '=' }, |
487 | { "darwin", LT_GENERIC, '=' }, |
488 | { "timeout", LT_GENERIC, '=' }, |
489 | { "install", LT_GENERIC, '=' }, |
490 | { "fstype", LT_GENERIC, '=' }, |
491 | { "hfstype", LT_GENERIC, '=' }, |
492 | { "delay", LT_GENERIC, '=' }, |
493 | { "defaultos", LT_GENERIC, '=' }, |
494 | { "init-message", LT_GENERIC, '=' }, |
495 | { "enablecdboot", LT_GENERIC, ' ' }, |
496 | { "enableofboot", LT_GENERIC, ' ' }, |
497 | { "enablenetboot", LT_GENERIC, ' ' }, |
498 | { "nonvram", LT_GENERIC, ' ' }, |
499 | { "hide", LT_GENERIC, ' ' }, |
500 | { "protect", LT_GENERIC, ' ' }, |
501 | { "nobless", LT_GENERIC, ' ' }, |
502 | { "nonvram", LT_GENERIC, ' ' }, |
503 | { "brokenosx", LT_GENERIC, ' ' }, |
504 | { "usemount", LT_GENERIC, ' ' }, |
505 | { "mntpoint", LT_GENERIC, '=' }, |
506 | { "partition", LT_GENERIC, '=' }, |
507 | { "device", LT_GENERIC, '=' }, |
508 | { "fstype", LT_GENERIC, '=' }, |
509 | { "initrd", LT_INITRD, '=', ';' }, |
510 | { "append", LT_KERNELARGS, '=' }, |
511 | { "boot", LT_BOOT, '=' }, |
512 | { "lba", LT_LBA, ' ' }, |
513 | { NULL, 0, 0 }, |
514 | }; |
515 | |
516 | struct keywordTypes liloKeywords[] = { |
517 | { "label", LT_TITLE, '=' }, |
518 | { "root", LT_ROOT, '=' }, |
519 | { "default", LT_DEFAULT, '=' }, |
520 | { "image", LT_KERNEL, '=' }, |
521 | { "other", LT_OTHER, '=' }, |
522 | { "initrd", LT_INITRD, '=' }, |
523 | { "append", LT_KERNELARGS, '=' }, |
524 | { "boot", LT_BOOT, '=' }, |
525 | { "lba", LT_LBA, ' ' }, |
526 | { NULL, 0, 0 }, |
527 | }; |
528 | |
529 | struct keywordTypes eliloKeywords[] = { |
530 | { "label", LT_TITLE, '=' }, |
531 | { "root", LT_ROOT, '=' }, |
532 | { "default", LT_DEFAULT, '=' }, |
533 | { "image", LT_KERNEL, '=' }, |
534 | { "initrd", LT_INITRD, '=' }, |
535 | { "append", LT_KERNELARGS, '=' }, |
536 | { "vmm", LT_HYPER, '=' }, |
537 | { NULL, 0, 0 }, |
538 | }; |
539 | |
540 | struct keywordTypes siloKeywords[] = { |
541 | { "label", LT_TITLE, '=' }, |
542 | { "root", LT_ROOT, '=' }, |
543 | { "default", LT_DEFAULT, '=' }, |
544 | { "image", LT_KERNEL, '=' }, |
545 | { "other", LT_OTHER, '=' }, |
546 | { "initrd", LT_INITRD, '=' }, |
547 | { "append", LT_KERNELARGS, '=' }, |
548 | { "boot", LT_BOOT, '=' }, |
549 | { NULL, 0, 0 }, |
550 | }; |
551 | |
552 | struct keywordTypes ziplKeywords[] = { |
553 | { "target", LT_BOOTROOT, '=' }, |
554 | { "image", LT_KERNEL, '=' }, |
555 | { "ramdisk", LT_INITRD, '=' }, |
556 | { "parameters", LT_KERNELARGS, '=' }, |
557 | { "default", LT_DEFAULT, '=' }, |
558 | { NULL, 0, 0 }, |
559 | }; |
560 | |
561 | struct keywordTypes extlinuxKeywords[] = { |
562 | { "label", LT_TITLE, ' ' }, |
563 | { "root", LT_ROOT, ' ' }, |
564 | { "default", LT_DEFAULT, ' ' }, |
565 | { "kernel", LT_KERNEL, ' ' }, |
566 | { "initrd", LT_INITRD, ' ', ',' }, |
567 | { "append", LT_KERNELARGS, ' ' }, |
568 | { "prompt", LT_UNKNOWN, ' ' }, |
569 | { NULL, 0, 0 }, |
570 | }; |
571 | int useextlinuxmenu; |
572 | struct configFileInfo eliloConfigType = { |
573 | .defaultConfig = "/boot/efi/EFI/redhat/elilo.conf", |
574 | .keywords = eliloKeywords, |
575 | .entryStart = LT_KERNEL, |
576 | .needsBootPrefix = 1, |
577 | .argsInQuotes = 1, |
578 | .mbConcatArgs = 1, |
579 | }; |
580 | |
581 | struct configFileInfo liloConfigType = { |
582 | .defaultConfig = "/etc/lilo.conf", |
583 | .keywords = liloKeywords, |
584 | .entryStart = LT_KERNEL, |
585 | .argsInQuotes = 1, |
586 | .maxTitleLength = 15, |
587 | }; |
588 | |
589 | struct configFileInfo yabootConfigType = { |
590 | .defaultConfig = "/etc/yaboot.conf", |
591 | .keywords = yabootKeywords, |
592 | .entryStart = LT_KERNEL, |
593 | .needsBootPrefix = 1, |
594 | .argsInQuotes = 1, |
595 | .maxTitleLength = 15, |
596 | .mbAllowExtraInitRds = 1, |
597 | }; |
598 | |
599 | struct configFileInfo siloConfigType = { |
600 | .defaultConfig = "/etc/silo.conf", |
601 | .keywords = siloKeywords, |
602 | .entryStart = LT_KERNEL, |
603 | .needsBootPrefix = 1, |
604 | .argsInQuotes = 1, |
605 | .maxTitleLength = 15, |
606 | }; |
607 | |
608 | struct configFileInfo ziplConfigType = { |
609 | .defaultConfig = "/etc/zipl.conf", |
610 | .keywords = ziplKeywords, |
611 | .entryStart = LT_TITLE, |
612 | .argsInQuotes = 1, |
613 | .titleBracketed = 1, |
614 | }; |
615 | |
616 | struct configFileInfo extlinuxConfigType = { |
617 | .defaultConfig = "/boot/extlinux/extlinux.conf", |
618 | .keywords = extlinuxKeywords, |
619 | .caseInsensitive = 1, |
620 | .entryStart = LT_TITLE, |
621 | .needsBootPrefix = 1, |
622 | .maxTitleLength = 255, |
623 | .mbAllowExtraInitRds = 1, |
624 | }; |
625 | |
626 | struct grubConfig { |
627 | struct singleLine * theLines; |
628 | struct singleEntry * entries; |
629 | char * primaryIndent; |
630 | char * secondaryIndent; |
631 | int defaultImage; /* -1 if none specified -- this value is |
632 | * written out, overriding original */ |
633 | int fallbackImage; /* just like defaultImage */ |
634 | int flags; |
635 | struct configFileInfo * cfi; |
636 | }; |
637 | |
638 | blkid_cache blkid; |
639 | |
640 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); |
641 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, |
642 | const char * path, const char * prefix, |
643 | int * index); |
644 | struct singleEntry * findEntryByTitle(struct grubConfig * cfg, char *title, |
645 | int * index); |
646 | static int readFile(int fd, char ** bufPtr); |
647 | static void lineInit(struct singleLine * line); |
648 | struct singleLine * lineDup(struct singleLine * line); |
649 | static void lineFree(struct singleLine * line); |
650 | static int lineWrite(FILE * out, struct singleLine * line, |
651 | struct configFileInfo * cfi); |
652 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
653 | struct configFileInfo * cfi); |
654 | static char * getRootSpecifier(char * str); |
655 | static void requote(struct singleLine *line, struct configFileInfo * cfi); |
656 | static void insertElement(struct singleLine * line, |
657 | const char * item, int insertHere, |
658 | struct configFileInfo * cfi); |
659 | static void removeElement(struct singleLine * line, int removeHere); |
660 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
661 | struct configFileInfo * cfi); |
662 | static enum lineType_e getTypeByKeyword(char * keyword, |
663 | struct configFileInfo * cfi); |
664 | static struct singleLine * getLineByType(enum lineType_e type, |
665 | struct singleLine * line); |
666 | static int checkForExtLinux(struct grubConfig * config); |
667 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
668 | struct singleLine * tmplLine, |
669 | struct singleLine * prevLine, |
670 | const char * val, |
671 | struct configFileInfo * cfi); |
672 | struct singleLine * addLine(struct singleEntry * entry, |
673 | struct configFileInfo * cfi, |
674 | enum lineType_e type, char * defaultIndent, |
675 | const char * val); |
676 | |
677 | static char * sdupprintf(const char *format, ...) |
678 | #ifdef __GNUC__ |
679 | __attribute__ ((format (printf, 1, 2))); |
680 | #else |
681 | ; |
682 | #endif |
683 | |
684 | static char * sdupprintf(const char *format, ...) { |
685 | char *buf = NULL; |
686 | char c; |
687 | va_list args; |
688 | size_t size = 0; |
689 | va_start(args, format); |
690 | |
691 | /* XXX requires C99 vsnprintf behavior */ |
692 | size = vsnprintf(&c, 1, format, args) + 1; |
693 | if (size == -1) { |
694 | printf("ERROR: vsnprintf behavior is not C99\n"); |
695 | abort(); |
696 | } |
697 | |
698 | va_end(args); |
699 | va_start(args, format); |
700 | |
701 | buf = malloc(size); |
702 | if (buf == NULL) |
703 | return NULL; |
704 | vsnprintf(buf, size, format, args); |
705 | va_end (args); |
706 | |
707 | return buf; |
708 | } |
709 | |
710 | static enum lineType_e preferredLineType(enum lineType_e type, |
711 | struct configFileInfo *cfi) { |
712 | if (isEfi && cfi == &grub2ConfigType) { |
713 | switch (type) { |
714 | case LT_KERNEL: |
715 | return LT_KERNEL_EFI; |
716 | case LT_INITRD: |
717 | return LT_INITRD_EFI; |
718 | default: |
719 | return type; |
720 | } |
721 | } |
722 | return type; |
723 | } |
724 | |
725 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
726 | struct configFileInfo * cfi) { |
727 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
728 | if (kw->type == type) |
729 | return kw; |
730 | } |
731 | return NULL; |
732 | } |
733 | |
734 | static char *getKeyByType(enum lineType_e type, struct configFileInfo * cfi) { |
735 | struct keywordTypes *kt = getKeywordByType(type, cfi); |
736 | if (kt) |
737 | return kt->key; |
738 | return "unknown"; |
739 | } |
740 | |
741 | static char * getpathbyspec(char *device) { |
742 | if (!blkid) |
743 | blkid_get_cache(&blkid, NULL); |
744 | |
745 | return blkid_get_devname(blkid, device, NULL); |
746 | } |
747 | |
748 | static char * getuuidbydev(char *device) { |
749 | if (!blkid) |
750 | blkid_get_cache(&blkid, NULL); |
751 | |
752 | return blkid_get_tag_value(blkid, "UUID", device); |
753 | } |
754 | |
755 | static enum lineType_e getTypeByKeyword(char * keyword, |
756 | struct configFileInfo * cfi) { |
757 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
758 | if (cfi->caseInsensitive) { |
759 | if (!strcasecmp(keyword, kw->key)) |
760 | return kw->type; |
761 | } else { |
762 | if (!strcmp(keyword, kw->key)) |
763 | return kw->type; |
764 | } |
765 | } |
766 | return LT_UNKNOWN; |
767 | } |
768 | |
769 | static struct singleLine * getLineByType(enum lineType_e type, |
770 | struct singleLine * line) { |
771 | dbgPrintf("getLineByType(%d): ", type); |
772 | for (; line; line = line->next) { |
773 | dbgPrintf("%d:%s ", line->type, |
774 | line->numElements ? line->elements[0].item : "(empty)"); |
775 | if (line->type & type) break; |
776 | } |
777 | dbgPrintf(line ? "\n" : " (failed)\n"); |
778 | return line; |
779 | } |
780 | |
781 | static int isBracketedTitle(struct singleLine * line) { |
782 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
783 | int len = strlen(line->elements[0].item); |
784 | if (*(line->elements[0].item + len - 1) == ']') { |
785 | /* FIXME: this is a hack... */ |
786 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
787 | return 1; |
788 | } |
789 | } |
790 | } |
791 | return 0; |
792 | } |
793 | |
794 | static int isEntryStart(struct singleLine * line, |
795 | struct configFileInfo * cfi) { |
796 | return line->type == cfi->entryStart || line->type == LT_OTHER || |
797 | (cfi->titleBracketed && isBracketedTitle(line)); |
798 | } |
799 | |
800 | /* extract the title from within brackets (for zipl) */ |
801 | static char * extractTitle(struct singleLine * line) { |
802 | /* bracketed title... let's extract it (leaks a byte) */ |
803 | char * title = NULL; |
804 | if (line->type == LT_TITLE) { |
805 | title = strdup(line->elements[0].item); |
806 | title++; |
807 | *(title + strlen(title) - 1) = '\0'; |
808 | } else if (line->type == LT_MENUENTRY) |
809 | title = strdup(line->elements[1].item); |
810 | else |
811 | return NULL; |
812 | return title; |
813 | } |
814 | |
815 | static int readFile(int fd, char ** bufPtr) { |
816 | int alloced = 0, size = 0, i = 0; |
817 | char * buf = NULL; |
818 | |
819 | do { |
820 | size += i; |
821 | if ((size + 1024) > alloced) { |
822 | alloced += 4096; |
823 | buf = realloc(buf, alloced + 1); |
824 | } |
825 | } while ((i = read(fd, buf + size, 1024)) > 0); |
826 | |
827 | if (i < 0) { |
828 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); |
829 | free(buf); |
830 | return 1; |
831 | } |
832 | |
833 | buf = realloc(buf, size + 2); |
834 | if (size == 0) |
835 | buf[size++] = '\n'; |
836 | else |
837 | if (buf[size - 1] != '\n') |
838 | buf[size++] = '\n'; |
839 | buf[size] = '\0'; |
840 | |
841 | *bufPtr = buf; |
842 | |
843 | return 0; |
844 | } |
845 | |
846 | static void lineInit(struct singleLine * line) { |
847 | line->indent = NULL; |
848 | line->elements = NULL; |
849 | line->numElements = 0; |
850 | line->next = NULL; |
851 | } |
852 | |
853 | struct singleLine * lineDup(struct singleLine * line) { |
854 | struct singleLine * newLine = malloc(sizeof(*newLine)); |
855 | |
856 | newLine->indent = strdup(line->indent); |
857 | newLine->next = NULL; |
858 | newLine->type = line->type; |
859 | newLine->numElements = line->numElements; |
860 | newLine->elements = malloc(sizeof(*newLine->elements) * |
861 | newLine->numElements); |
862 | |
863 | for (int i = 0; i < newLine->numElements; i++) { |
864 | newLine->elements[i].indent = strdup(line->elements[i].indent); |
865 | newLine->elements[i].item = strdup(line->elements[i].item); |
866 | } |
867 | |
868 | return newLine; |
869 | } |
870 | |
871 | static void lineFree(struct singleLine * line) { |
872 | if (line->indent) free(line->indent); |
873 | |
874 | for (int i = 0; i < line->numElements; i++) { |
875 | free(line->elements[i].item); |
876 | free(line->elements[i].indent); |
877 | } |
878 | |
879 | if (line->elements) free(line->elements); |
880 | lineInit(line); |
881 | } |
882 | |
883 | static int lineWrite(FILE * out, struct singleLine * line, |
884 | struct configFileInfo * cfi) { |
885 | if (fprintf(out, "%s", line->indent) == -1) return -1; |
886 | |
887 | for (int i = 0; i < line->numElements; i++) { |
888 | /* Need to handle this, because we strip the quotes from |
889 | * menuentry when read it. */ |
890 | if (line->type == LT_MENUENTRY && i == 1) { |
891 | if(!isquote(*line->elements[i].item)) |
892 | fprintf(out, "\'%s\'", line->elements[i].item); |
893 | else |
894 | fprintf(out, "%s", line->elements[i].item); |
895 | fprintf(out, "%s", line->elements[i].indent); |
896 | |
897 | continue; |
898 | } |
899 | |
900 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
901 | if (fputc('"', out) == EOF) return -1; |
902 | |
903 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; |
904 | if (i < line->numElements - 1) |
905 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; |
906 | } |
907 | |
908 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
909 | if (fputc('"', out) == EOF) return -1; |
910 | |
911 | if (fprintf(out, "\n") == -1) return -1; |
912 | |
913 | return 0; |
914 | } |
915 | |
916 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
917 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
918 | struct configFileInfo * cfi) { |
919 | char * end; |
920 | char * start = *bufPtr; |
921 | char * chptr; |
922 | int elementsAlloced = 0; |
923 | struct lineElement * element; |
924 | int first = 1; |
925 | |
926 | lineFree(line); |
927 | |
928 | end = strchr(start, '\n'); |
929 | *end = '\0'; |
930 | *bufPtr = end + 1; |
931 | |
932 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
933 | |
934 | line->indent = strndup(start, chptr - start); |
935 | start = chptr; |
936 | |
937 | while (start < end) { |
938 | /* we know !isspace(*start) */ |
939 | |
940 | if (elementsAlloced == line->numElements) { |
941 | elementsAlloced += 5; |
942 | line->elements = realloc(line->elements, |
943 | sizeof(*line->elements) * elementsAlloced); |
944 | } |
945 | |
946 | element = line->elements + line->numElements; |
947 | |
948 | chptr = start; |
949 | while (*chptr && !isspace(*chptr)) { |
950 | if (first && *chptr == '=') break; |
951 | chptr++; |
952 | } |
953 | element->item = strndup(start, chptr - start); |
954 | start = chptr; |
955 | |
956 | /* lilo actually accepts the pathological case of append = " foo " */ |
957 | if (*start == '=') |
958 | chptr = start + 1; |
959 | else |
960 | chptr = start; |
961 | |
962 | do { |
963 | for (; *chptr && isspace(*chptr); chptr++); |
964 | if (*chptr == '=') |
965 | chptr = chptr + 1; |
966 | } while (isspace(*chptr)); |
967 | |
968 | element->indent = strndup(start, chptr - start); |
969 | start = chptr; |
970 | |
971 | line->numElements++; |
972 | first = 0; |
973 | } |
974 | |
975 | if (!line->numElements) |
976 | line->type = LT_WHITESPACE; |
977 | else { |
978 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
979 | if (line->type == LT_UNKNOWN) { |
980 | /* zipl does [title] instead of something reasonable like all |
981 | * the other boot loaders. kind of ugly */ |
982 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
983 | line->type = LT_TITLE; |
984 | } |
985 | |
986 | /* this is awkward, but we need to be able to handle keywords |
987 | that begin with a # (specifically for #boot in grub.conf), |
988 | but still make comments lines with no elements (everything |
989 | stored in the indent */ |
990 | if (*line->elements[0].item == '#') { |
991 | char * fullLine; |
992 | int len; |
993 | |
994 | len = strlen(line->indent); |
995 | for (int i = 0; i < line->numElements; i++) |
996 | len += strlen(line->elements[i].item) + |
997 | strlen(line->elements[i].indent); |
998 | |
999 | fullLine = malloc(len + 1); |
1000 | strcpy(fullLine, line->indent); |
1001 | free(line->indent); |
1002 | line->indent = fullLine; |
1003 | |
1004 | for (int i = 0; i < line->numElements; i++) { |
1005 | strcat(fullLine, line->elements[i].item); |
1006 | strcat(fullLine, line->elements[i].indent); |
1007 | free(line->elements[i].item); |
1008 | free(line->elements[i].indent); |
1009 | } |
1010 | |
1011 | line->type = LT_WHITESPACE; |
1012 | line->numElements = 0; |
1013 | } |
1014 | } else { |
1015 | struct keywordTypes *kw; |
1016 | |
1017 | kw = getKeywordByType(line->type, cfi); |
1018 | |
1019 | /* space isn't the only separator, we need to split |
1020 | * elements up more |
1021 | */ |
1022 | if (!isspace(kw->separatorChar)) { |
1023 | char indent[2] = ""; |
1024 | indent[0] = kw->separatorChar; |
1025 | for (int i = 1; i < line->numElements; i++) { |
1026 | char *p; |
1027 | int numNewElements; |
1028 | |
1029 | numNewElements = 0; |
1030 | p = line->elements[i].item; |
1031 | while (*p != '\0') { |
1032 | if (*p == kw->separatorChar) |
1033 | numNewElements++; |
1034 | p++; |
1035 | } |
1036 | if (line->numElements + numNewElements >= elementsAlloced) { |
1037 | elementsAlloced += numNewElements + 5; |
1038 | line->elements = realloc(line->elements, |
1039 | sizeof(*line->elements) * elementsAlloced); |
1040 | } |
1041 | |
1042 | for (int j = line->numElements; j > i; j--) { |
1043 | line->elements[j + numNewElements] = line->elements[j]; |
1044 | } |
1045 | line->numElements += numNewElements; |
1046 | |
1047 | p = line->elements[i].item; |
1048 | while (*p != '\0') { |
1049 | |
1050 | while (*p != kw->separatorChar && *p != '\0') p++; |
1051 | if (*p == '\0') { |
1052 | break; |
1053 | } |
1054 | |
1055 | line->elements[i + 1].indent = line->elements[i].indent; |
1056 | line->elements[i].indent = strdup(indent); |
1057 | *p++ = '\0'; |
1058 | i++; |
1059 | line->elements[i].item = strdup(p); |
1060 | } |
1061 | } |
1062 | } |
1063 | } |
1064 | } |
1065 | |
1066 | return 0; |
1067 | } |
1068 | |
1069 | static struct grubConfig * readConfig(const char * inName, |
1070 | struct configFileInfo * cfi) { |
1071 | int in; |
1072 | char * incoming = NULL, * head; |
1073 | int rc; |
1074 | int sawEntry = 0; |
1075 | int movedLine = 0; |
1076 | struct grubConfig * cfg; |
1077 | struct singleLine * last = NULL, * line, * defaultLine = NULL; |
1078 | char * end; |
1079 | struct singleEntry * entry = NULL; |
1080 | int len; |
1081 | char * buf; |
1082 | |
1083 | if (inName == NULL) { |
1084 | printf("Could not find bootloader configuration\n"); |
1085 | exit(1); |
1086 | } else if (!strcmp(inName, "-")) { |
1087 | in = 0; |
1088 | } else { |
1089 | if ((in = open(inName, O_RDONLY)) < 0) { |
1090 | fprintf(stderr, _("error opening %s for read: %s\n"), |
1091 | inName, strerror(errno)); |
1092 | return NULL; |
1093 | } |
1094 | } |
1095 | |
1096 | rc = readFile(in, &incoming); |
1097 | close(in); |
1098 | if (rc) return NULL; |
1099 | |
1100 | head = incoming; |
1101 | cfg = malloc(sizeof(*cfg)); |
1102 | cfg->primaryIndent = strdup(""); |
1103 | cfg->secondaryIndent = strdup("\t"); |
1104 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
1105 | cfg->cfi = cfi; |
1106 | cfg->theLines = NULL; |
1107 | cfg->entries = NULL; |
1108 | cfg->fallbackImage = 0; |
1109 | |
1110 | /* copy everything we have */ |
1111 | while (*head) { |
1112 | line = malloc(sizeof(*line)); |
1113 | lineInit(line); |
1114 | |
1115 | if (getNextLine(&head, line, cfi)) { |
1116 | free(line); |
1117 | /* XXX memory leak of everything in cfg */ |
1118 | return NULL; |
1119 | } |
1120 | |
1121 | if (!sawEntry && line->numElements) { |
1122 | free(cfg->primaryIndent); |
1123 | cfg->primaryIndent = strdup(line->indent); |
1124 | } else if (line->numElements) { |
1125 | free(cfg->secondaryIndent); |
1126 | cfg->secondaryIndent = strdup(line->indent); |
1127 | } |
1128 | |
1129 | if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) { |
1130 | sawEntry = 1; |
1131 | if (!entry) { |
1132 | cfg->entries = malloc(sizeof(*entry)); |
1133 | entry = cfg->entries; |
1134 | } else { |
1135 | entry->next = malloc(sizeof(*entry)); |
1136 | entry = entry->next; |
1137 | } |
1138 | |
1139 | entry->skip = 0; |
1140 | entry->multiboot = 0; |
1141 | entry->lines = NULL; |
1142 | entry->next = NULL; |
1143 | } |
1144 | |
1145 | if (line->type == LT_SET_VARIABLE) { |
1146 | dbgPrintf("found 'set' command (%d elements): ", line->numElements); |
1147 | dbgPrintf("%s", line->indent); |
1148 | for (int i = 0; i < line->numElements; i++) |
1149 | dbgPrintf("\"%s\"%s", line->elements[i].item, line->elements[i].indent); |
1150 | dbgPrintf("\n"); |
1151 | struct keywordTypes *kwType = getKeywordByType(LT_DEFAULT, cfi); |
1152 | if (kwType && line->numElements == 3 && |
1153 | !strcmp(line->elements[1].item, kwType->key) && |
1154 | !is_special_grub2_variable(line->elements[2].item)) { |
1155 | dbgPrintf("Line sets default config\n"); |
1156 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1157 | defaultLine = line; |
1158 | } |
1159 | } else if (line->type == LT_DEFAULT && line->numElements == 2) { |
1160 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1161 | defaultLine = line; |
1162 | |
1163 | } else if (iskernel(line->type)) { |
1164 | /* if by some freak chance this is multiboot and the "module" |
1165 | * lines came earlier in the template, make sure to use LT_HYPER |
1166 | * instead of LT_KERNEL now |
1167 | */ |
1168 | if (entry->multiboot) |
1169 | line->type = LT_HYPER; |
1170 | |
1171 | } else if (line->type == LT_MBMODULE) { |
1172 | /* go back and fix the LT_KERNEL line to indicate LT_HYPER |
1173 | * instead, now that we know this is a multiboot entry. |
1174 | * This only applies to grub, but that's the only place we |
1175 | * should find LT_MBMODULE lines anyway. |
1176 | */ |
1177 | for (struct singleLine *l = entry->lines; l; l = l->next) { |
1178 | if (l->type == LT_HYPER) |
1179 | break; |
1180 | else if (iskernel(l->type)) { |
1181 | l->type = LT_HYPER; |
1182 | break; |
1183 | } |
1184 | } |
1185 | entry->multiboot = 1; |
1186 | |
1187 | } else if (line->type == LT_HYPER) { |
1188 | entry->multiboot = 1; |
1189 | |
1190 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
1191 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); |
1192 | if (*end) cfg->fallbackImage = -1; |
1193 | |
1194 | } else if (line->type == LT_TITLE && line->numElements > 1) { |
1195 | /* make the title a single argument (undoing our parsing) */ |
1196 | len = 0; |
1197 | for (int i = 1; i < line->numElements; i++) { |
1198 | len += strlen(line->elements[i].item); |
1199 | len += strlen(line->elements[i].indent); |
1200 | } |
1201 | buf = malloc(len + 1); |
1202 | *buf = '\0'; |
1203 | |
1204 | for (int i = 1; i < line->numElements; i++) { |
1205 | strcat(buf, line->elements[i].item); |
1206 | free(line->elements[i].item); |
1207 | |
1208 | if ((i + 1) != line->numElements) { |
1209 | strcat(buf, line->elements[i].indent); |
1210 | free(line->elements[i].indent); |
1211 | } |
1212 | } |
1213 | |
1214 | line->elements[1].indent = |
1215 | line->elements[line->numElements - 1].indent; |
1216 | line->elements[1].item = buf; |
1217 | line->numElements = 2; |
1218 | } else if (line->type == LT_MENUENTRY && line->numElements > 3) { |
1219 | /* let --remove-kernel="TITLE=what" work */ |
1220 | len = 0; |
1221 | char *extras; |
1222 | char *title; |
1223 | |
1224 | for (int i = 1; i < line->numElements; i++) { |
1225 | len += strlen(line->elements[i].item); |
1226 | len += strlen(line->elements[i].indent); |
1227 | } |
1228 | buf = malloc(len + 1); |
1229 | *buf = '\0'; |
1230 | |
1231 | /* allocate mem for extra flags. */ |
1232 | extras = malloc(len + 1); |
1233 | *extras = '\0'; |
1234 | |
1235 | /* get title. */ |
1236 | for (int i = 0; i < line->numElements; i++) { |
1237 | if (!strcmp(line->elements[i].item, "menuentry")) |
1238 | continue; |
1239 | if (isquote(*line->elements[i].item)) |
1240 | title = line->elements[i].item + 1; |
1241 | else |
1242 | title = line->elements[i].item; |
1243 | |
1244 | len = strlen(title); |
1245 | if (isquote(title[len-1])) { |
1246 | strncat(buf, title,len-1); |
1247 | break; |
1248 | } else { |
1249 | strcat(buf, title); |
1250 | strcat(buf, line->elements[i].indent); |
1251 | } |
1252 | } |
1253 | |
1254 | /* get extras */ |
1255 | int count = 0; |
1256 | for (int i = 0; i < line->numElements; i++) { |
1257 | if (count >= 2) { |
1258 | strcat(extras, line->elements[i].item); |
1259 | strcat(extras, line->elements[i].indent); |
1260 | } |
1261 | |
1262 | if (!strcmp(line->elements[i].item, "menuentry")) |
1263 | continue; |
1264 | |
1265 | /* count ' or ", there should be two in menuentry line. */ |
1266 | if (isquote(*line->elements[i].item)) |
1267 | count++; |
1268 | |
1269 | len = strlen(line->elements[i].item); |
1270 | |
1271 | if (isquote(line->elements[i].item[len -1])) |
1272 | count++; |
1273 | |
1274 | /* ok, we get the final ' or ", others are extras. */ |
1275 | } |
1276 | line->elements[1].indent = |
1277 | line->elements[line->numElements - 2].indent; |
1278 | line->elements[1].item = buf; |
1279 | line->elements[2].indent = |
1280 | line->elements[line->numElements - 2].indent; |
1281 | line->elements[2].item = extras; |
1282 | line->numElements = 3; |
1283 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
1284 | /* Strip off any " which may be present; they'll be put back |
1285 | on write. This is one of the few (the only?) places that grubby |
1286 | canonicalizes the output */ |
1287 | |
1288 | if (line->numElements >= 2) { |
1289 | int last, len; |
1290 | |
1291 | if (isquote(*line->elements[1].item)) |
1292 | memmove(line->elements[1].item, line->elements[1].item + 1, |
1293 | strlen(line->elements[1].item + 1) + 1); |
1294 | |
1295 | last = line->numElements - 1; |
1296 | len = strlen(line->elements[last].item) - 1; |
1297 | if (isquote(line->elements[last].item[len])) |
1298 | line->elements[last].item[len] = '\0'; |
1299 | } |
1300 | } |
1301 | |
1302 | /* If we find a generic config option which should live at the |
1303 | top of the file, move it there. Old versions of grubby were |
1304 | probably responsible for putting new images in the wrong |
1305 | place in front of it anyway. */ |
1306 | if (sawEntry && line->type == LT_GENERIC) { |
1307 | struct singleLine **l = &cfg->theLines; |
1308 | struct singleLine **last_nonws = &cfg->theLines; |
1309 | while (*l) { |
1310 | if ((*l)->type != LT_WHITESPACE) |
1311 | last_nonws = &((*l)->next); |
1312 | l = &((*l)->next); |
1313 | } |
1314 | line->next = *last_nonws; |
1315 | *last_nonws = line; |
1316 | movedLine = 1; |
1317 | continue; /* without setting 'last' */ |
1318 | } |
1319 | |
1320 | /* If a second line of whitespace happens after a generic option |
1321 | which was moved, drop it. */ |
1322 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { |
1323 | lineFree(line); |
1324 | free(line); |
1325 | movedLine = 0; |
1326 | continue; |
1327 | } |
1328 | movedLine = 0; |
1329 | |
1330 | if (sawEntry) { |
1331 | if (!entry->lines) |
1332 | entry->lines = line; |
1333 | else |
1334 | last->next = line; |
1335 | dbgPrintf("readConfig added %s to %p\n", getKeyByType(line->type, cfi), entry); |
1336 | |
1337 | /* we could have seen this outside of an entry... if so, we |
1338 | * ignore it like any other line we don't grok */ |
1339 | if (line->type == LT_ENTRY_END && sawEntry) |
1340 | sawEntry = 0; |
1341 | } else { |
1342 | if (!cfg->theLines) |
1343 | cfg->theLines = line; |
1344 | else |
1345 | last->next = line; |
1346 | dbgPrintf("readConfig added %s to cfg\n", getKeyByType(line->type, cfi)); |
1347 | } |
1348 | |
1349 | last = line; |
1350 | } |
1351 | |
1352 | free(incoming); |
1353 | |
1354 | dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset"); |
1355 | if (defaultLine) { |
1356 | if (defaultLine->numElements > 2 && |
1357 | cfi->defaultSupportSaved && |
1358 | !strncmp(defaultLine->elements[2].item,"\"${saved_entry}\"", 16)) { |
1359 | cfg->cfi->defaultIsSaved = 1; |
1360 | cfg->defaultImage = DEFAULT_SAVED_GRUB2; |
1361 | if (cfg->cfi->getEnv) { |
1362 | char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry"); |
1363 | if (defTitle) { |
1364 | int index = 0; |
1365 | entry = findEntryByTitle(cfg, defTitle, &index); |
1366 | if (entry) |
1367 | cfg->defaultImage = index; |
1368 | } |
1369 | } |
1370 | } else if (cfi->defaultIsVariable) { |
1371 | char *value = defaultLine->elements[2].item; |
1372 | while (*value && (*value == '"' || *value == '\'' || |
1373 | *value == ' ' || *value == '\t')) |
1374 | value++; |
1375 | cfg->defaultImage = strtol(value, &end, 10); |
1376 | while (*end && (*end == '"' || *end == '\'' || |
1377 | *end == ' ' || *end == '\t')) |
1378 | end++; |
1379 | if (*end) cfg->defaultImage = -1; |
1380 | } else if (cfi->defaultSupportSaved && |
1381 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { |
1382 | cfg->defaultImage = DEFAULT_SAVED; |
1383 | } else if (cfi->defaultIsIndex) { |
1384 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); |
1385 | if (*end) cfg->defaultImage = -1; |
1386 | } else if (defaultLine->numElements >= 2) { |
1387 | int i = 0; |
1388 | while ((entry = findEntryByIndex(cfg, i))) { |
1389 | for (line = entry->lines; line; line = line->next) |
1390 | if (line->type == LT_TITLE) break; |
1391 | |
1392 | if (!cfi->titleBracketed) { |
1393 | if (line && (line->numElements >= 2) && |
1394 | !strcmp(defaultLine->elements[1].item, |
1395 | line->elements[1].item)) break; |
1396 | } else if (line) { |
1397 | if (!strcmp(defaultLine->elements[1].item, |
1398 | extractTitle(line))) break; |
1399 | } |
1400 | i++; |
1401 | entry = NULL; |
1402 | } |
1403 | |
1404 | if (entry){ |
1405 | cfg->defaultImage = i; |
1406 | }else{ |
1407 | cfg->defaultImage = -1; |
1408 | } |
1409 | } |
1410 | } else if (cfg->cfi->defaultIsSaved && cfg->cfi->getEnv) { |
1411 | char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry"); |
1412 | if (defTitle) { |
1413 | int index = 0; |
1414 | entry = findEntryByTitle(cfg, defTitle, &index); |
1415 | if (entry) |
1416 | cfg->defaultImage = index; |
1417 | } |
1418 | } else { |
1419 | cfg->defaultImage = 0; |
1420 | } |
1421 | |
1422 | return cfg; |
1423 | } |
1424 | |
1425 | static void writeDefault(FILE * out, char * indent, |
1426 | char * separator, struct grubConfig * cfg) { |
1427 | struct singleEntry * entry; |
1428 | struct singleLine * line; |
1429 | int i; |
1430 | |
1431 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; |
1432 | |
1433 | if (cfg->defaultImage == DEFAULT_SAVED) |
1434 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
1435 | else if (cfg->cfi->defaultIsSaved) { |
1436 | fprintf(out, "%sset default=\"${saved_entry}\"\n", indent); |
1437 | if (cfg->defaultImage >= 0 && cfg->cfi->setEnv) { |
1438 | char *title; |
1439 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
1440 | line = getLineByType(LT_MENUENTRY, entry->lines); |
1441 | if (!line) |
1442 | line = getLineByType(LT_TITLE, entry->lines); |
1443 | if (line) { |
1444 | title = extractTitle(line); |
1445 | if (title) |
1446 | cfg->cfi->setEnv(cfg->cfi, "saved_entry", title); |
1447 | } |
1448 | } |
1449 | } else if (cfg->defaultImage > -1) { |
1450 | if (cfg->cfi->defaultIsIndex) { |
1451 | if (cfg->cfi->defaultIsVariable) { |
1452 | fprintf(out, "%sset default=\"%d\"\n", indent, |
1453 | cfg->defaultImage); |
1454 | } else { |
1455 | fprintf(out, "%sdefault%s%d\n", indent, separator, |
1456 | cfg->defaultImage); |
1457 | } |
1458 | } else { |
1459 | int image = cfg->defaultImage; |
1460 | |
1461 | entry = cfg->entries; |
1462 | while (entry && entry->skip) entry = entry->next; |
1463 | |
1464 | i = 0; |
1465 | while (entry && i < image) { |
1466 | entry = entry->next; |
1467 | |
1468 | while (entry && entry->skip) entry = entry->next; |
1469 | i++; |
1470 | } |
1471 | |
1472 | if (!entry) return; |
1473 | |
1474 | line = getLineByType(LT_TITLE, entry->lines); |
1475 | |
1476 | if (line && line->numElements >= 2) |
1477 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1478 | line->elements[1].item); |
1479 | else if (line && (line->numElements == 1) && |
1480 | cfg->cfi->titleBracketed) { |
1481 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1482 | extractTitle(line)); |
1483 | } |
1484 | } |
1485 | } |
1486 | } |
1487 | |
1488 | static int writeConfig(struct grubConfig * cfg, char * outName, |
1489 | const char * prefix) { |
1490 | FILE * out; |
1491 | struct singleLine * line; |
1492 | struct singleEntry * entry; |
1493 | char * tmpOutName; |
1494 | int needs = MAIN_DEFAULT; |
1495 | struct stat sb; |
1496 | int i; |
1497 | |
1498 | if (!strcmp(outName, "-")) { |
1499 | out = stdout; |
1500 | tmpOutName = NULL; |
1501 | } else { |
1502 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
1503 | char * buf; |
1504 | int len = 256; |
1505 | int rc; |
1506 | |
1507 | /* most likely the symlink is relative, so change our |
1508 | directory to the dir of the symlink */ |
1509 | char *dir = strdupa(outName); |
1510 | rc = chdir(dirname(dir)); |
1511 | do { |
1512 | buf = alloca(len + 1); |
1513 | rc = readlink(basename(outName), buf, len); |
1514 | if (rc == len) len += 256; |
1515 | } while (rc == len); |
1516 | |
1517 | if (rc < 0) { |
1518 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), |
1519 | outName, strerror(errno)); |
1520 | return 1; |
1521 | } |
1522 | |
1523 | outName = buf; |
1524 | outName[rc] = '\0'; |
1525 | } |
1526 | |
1527 | tmpOutName = alloca(strlen(outName) + 2); |
1528 | sprintf(tmpOutName, "%s-", outName); |
1529 | out = fopen(tmpOutName, "w"); |
1530 | if (!out) { |
1531 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, |
1532 | strerror(errno)); |
1533 | return 1; |
1534 | } |
1535 | |
1536 | if (!stat(outName, &sb)) { |
1537 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
1538 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), |
1539 | tmpOutName, strerror(errno)); |
1540 | fclose(out); |
1541 | unlink(tmpOutName); |
1542 | return 1; |
1543 | } |
1544 | } |
1545 | } |
1546 | |
1547 | line = cfg->theLines; |
1548 | struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi); |
1549 | while (line) { |
1550 | if (line->type == LT_SET_VARIABLE && defaultKw && |
1551 | line->numElements == 3 && |
1552 | !strcmp(line->elements[1].item, defaultKw->key) && |
1553 | !is_special_grub2_variable(line->elements[2].item)) { |
1554 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1555 | needs &= ~MAIN_DEFAULT; |
1556 | } else if (line->type == LT_DEFAULT) { |
1557 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1558 | needs &= ~MAIN_DEFAULT; |
1559 | } else if (line->type == LT_FALLBACK) { |
1560 | if (cfg->fallbackImage > -1) |
1561 | fprintf(out, "%s%s%s%d\n", line->indent, |
1562 | line->elements[0].item, line->elements[0].indent, |
1563 | cfg->fallbackImage); |
1564 | } else { |
1565 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1566 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1567 | tmpOutName, strerror(errno)); |
1568 | fclose(out); |
1569 | unlink(tmpOutName); |
1570 | return 1; |
1571 | } |
1572 | } |
1573 | |
1574 | line = line->next; |
1575 | } |
1576 | |
1577 | if (needs & MAIN_DEFAULT) { |
1578 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
1579 | needs &= ~MAIN_DEFAULT; |
1580 | } |
1581 | |
1582 | i = 0; |
1583 | while ((entry = findEntryByIndex(cfg, i++))) { |
1584 | if (entry->skip) continue; |
1585 | |
1586 | line = entry->lines; |
1587 | while (line) { |
1588 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1589 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1590 | tmpOutName, strerror(errno)); |
1591 | fclose(out); |
1592 | unlink(tmpOutName); |
1593 | return 1; |
1594 | } |
1595 | line = line->next; |
1596 | } |
1597 | } |
1598 | |
1599 | if (tmpOutName) { |
1600 | if (rename(tmpOutName, outName)) { |
1601 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), |
1602 | tmpOutName, outName, strerror(errno)); |
1603 | unlink(outName); |
1604 | return 1; |
1605 | } |
1606 | } |
1607 | |
1608 | return 0; |
1609 | } |
1610 | |
1611 | static int numEntries(struct grubConfig *cfg) { |
1612 | int i = 0; |
1613 | struct singleEntry * entry; |
1614 | |
1615 | entry = cfg->entries; |
1616 | while (entry) { |
1617 | if (!entry->skip) |
1618 | i++; |
1619 | entry = entry->next; |
1620 | } |
1621 | return i; |
1622 | } |
1623 | |
1624 | static char *findDiskForRoot() |
1625 | { |
1626 | int fd; |
1627 | char buf[65536]; |
1628 | char *devname; |
1629 | char *chptr; |
1630 | int rc; |
1631 | |
1632 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { |
1633 | fprintf(stderr, "grubby: failed to open %s: %s\n", |
1634 | _PATH_MOUNTED, strerror(errno)); |
1635 | return NULL; |
1636 | } |
1637 | |
1638 | rc = read(fd, buf, sizeof(buf) - 1); |
1639 | if (rc <= 0) { |
1640 | fprintf(stderr, "grubby: failed to read %s: %s\n", |
1641 | _PATH_MOUNTED, strerror(errno)); |
1642 | close(fd); |
1643 | return NULL; |
1644 | } |
1645 | close(fd); |
1646 | buf[rc] = '\0'; |
1647 | chptr = buf; |
1648 | |
1649 | char *foundanswer = NULL; |
1650 | |
1651 | while (chptr && chptr != buf+rc) { |
1652 | devname = chptr; |
1653 | |
1654 | /* |
1655 | * The first column of a mtab entry is the device, but if the entry is a |
1656 | * special device it won't start with /, so move on to the next line. |
1657 | */ |
1658 | if (*devname != '/') { |
1659 | chptr = strchr(chptr, '\n'); |
1660 | if (chptr) |
1661 | chptr++; |
1662 | continue; |
1663 | } |
1664 | |
1665 | /* Seek to the next space */ |
1666 | chptr = strchr(chptr, ' '); |
1667 | if (!chptr) { |
1668 | fprintf(stderr, "grubby: error parsing %s: %s\n", |
1669 | _PATH_MOUNTED, strerror(errno)); |
1670 | return NULL; |
1671 | } |
1672 | |
1673 | /* |
1674 | * The second column of a mtab entry is the mount point, we are looking |
1675 | * for '/' obviously. |
1676 | */ |
1677 | if (*(++chptr) == '/' && *(++chptr) == ' ') { |
1678 | /* remember the last / entry in mtab */ |
1679 | foundanswer = devname; |
1680 | } |
1681 | |
1682 | /* Next line */ |
1683 | chptr = strchr(chptr, '\n'); |
1684 | if (chptr) |
1685 | chptr++; |
1686 | } |
1687 | |
1688 | /* Return the last / entry found */ |
1689 | if (foundanswer) { |
1690 | chptr = strchr(foundanswer, ' '); |
1691 | *chptr = '\0'; |
1692 | return strdup(foundanswer); |
1693 | } |
1694 | |
1695 | return NULL; |
1696 | } |
1697 | |
1698 | void printEntry(struct singleEntry * entry, FILE *f) { |
1699 | int i; |
1700 | struct singleLine * line; |
1701 | |
1702 | for (line = entry->lines; line; line = line->next) { |
1703 | log_message(f, "DBG: %s", line->indent); |
1704 | for (i = 0; i < line->numElements; i++) { |
1705 | /* Need to handle this, because we strip the quotes from |
1706 | * menuentry when read it. */ |
1707 | if (line->type == LT_MENUENTRY && i == 1) { |
1708 | if(!isquote(*line->elements[i].item)) |
1709 | log_message(f, "\'%s\'", line->elements[i].item); |
1710 | else |
1711 | log_message(f, "%s", line->elements[i].item); |
1712 | log_message(f, "%s", line->elements[i].indent); |
1713 | |
1714 | continue; |
1715 | } |
1716 | |
1717 | log_message(f, "%s%s", |
1718 | line->elements[i].item, line->elements[i].indent); |
1719 | } |
1720 | log_message(f, "\n"); |
1721 | } |
1722 | } |
1723 | |
1724 | void notSuitablePrintf(struct singleEntry * entry, int okay, const char *fmt, ...) |
1725 | { |
1726 | static int once; |
1727 | va_list argp, argq; |
1728 | |
1729 | va_start(argp, fmt); |
1730 | |
1731 | va_copy(argq, argp); |
1732 | if (!once) { |
1733 | log_time(NULL); |
1734 | log_message(NULL, "command line: %s\n", saved_command_line); |
1735 | } |
1736 | log_message(NULL, "DBG: Image entry %s: ", okay ? "succeeded" : "failed"); |
1737 | log_vmessage(NULL, fmt, argq); |
1738 | |
1739 | printEntry(entry, NULL); |
1740 | va_end(argq); |
1741 | |
1742 | if (!debug) { |
1743 | once = 1; |
1744 | va_end(argp); |
1745 | return; |
1746 | } |
1747 | |
1748 | if (okay) { |
1749 | va_end(argp); |
1750 | return; |
1751 | } |
1752 | |
1753 | if (!once) |
1754 | log_message(stderr, "DBG: command line: %s\n", saved_command_line); |
1755 | once = 1; |
1756 | fprintf(stderr, "DBG: Image entry failed: "); |
1757 | vfprintf(stderr, fmt, argp); |
1758 | printEntry(entry, stderr); |
1759 | va_end(argp); |
1760 | } |
1761 | |
1762 | #define beginswith(s, c) ((s) && (s)[0] == (c)) |
1763 | |
1764 | static int endswith(const char *s, char c) |
1765 | { |
1766 | int slen; |
1767 | |
1768 | if (!s || !s[0]) |
1769 | return 0; |
1770 | slen = strlen(s) - 1; |
1771 | |
1772 | return s[slen] == c; |
1773 | } |
1774 | |
1775 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, |
1776 | int skipRemoved, int flags) { |
1777 | struct singleLine * line; |
1778 | char * fullName; |
1779 | int i; |
1780 | char * dev; |
1781 | char * rootspec; |
1782 | char * rootdev; |
1783 | |
1784 | if (skipRemoved && entry->skip) { |
1785 | notSuitablePrintf(entry, 0, "marked to skip\n"); |
1786 | return 0; |
1787 | } |
1788 | |
1789 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
1790 | if (!line) { |
1791 | notSuitablePrintf(entry, 0, "no line found\n"); |
1792 | return 0; |
1793 | } |
1794 | if (line->numElements < 2) { |
1795 | notSuitablePrintf(entry, 0, "line has only %d elements\n", |
1796 | line->numElements); |
1797 | return 0; |
1798 | } |
1799 | |
1800 | if (flags & GRUBBY_BADIMAGE_OKAY) { |
1801 | notSuitablePrintf(entry, 1, "\n"); |
1802 | return 1; |
1803 | } |
1804 | |
1805 | fullName = alloca(strlen(bootPrefix) + |
1806 | strlen(line->elements[1].item) + 1); |
1807 | rootspec = getRootSpecifier(line->elements[1].item); |
1808 | int rootspec_offset = rootspec ? strlen(rootspec) : 0; |
1809 | int hasslash = endswith(bootPrefix, '/') || |
1810 | beginswith(line->elements[1].item + rootspec_offset, '/'); |
1811 | sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/", |
1812 | line->elements[1].item + rootspec_offset); |
1813 | if (access(fullName, R_OK)) { |
1814 | notSuitablePrintf(entry, 0, "access to %s failed\n", fullName); |
1815 | return 0; |
1816 | } |
1817 | for (i = 2; i < line->numElements; i++) |
1818 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1819 | if (i < line->numElements) { |
1820 | dev = line->elements[i].item + 5; |
1821 | } else { |
1822 | /* look for a lilo style LT_ROOT line */ |
1823 | line = getLineByType(LT_ROOT, entry->lines); |
1824 | |
1825 | if (line && line->numElements >= 2) { |
1826 | dev = line->elements[1].item; |
1827 | } else { |
1828 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS. |
1829 | * grub+multiboot uses LT_MBMODULE for the args, so check that too. |
1830 | */ |
1831 | line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines); |
1832 | |
1833 | /* failed to find one */ |
1834 | if (!line) { |
1835 | notSuitablePrintf(entry, 0, "no line found\n"); |
1836 | return 0; |
1837 | } |
1838 | |
1839 | for (i = 1; i < line->numElements; i++) |
1840 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1841 | if (i < line->numElements) |
1842 | dev = line->elements[i].item + 5; |
1843 | else { |
1844 | notSuitablePrintf(entry, 0, "no root= entry found\n"); |
1845 | /* it failed too... can't find root= */ |
1846 | return 0; |
1847 | } |
1848 | } |
1849 | } |
1850 | |
1851 | dev = getpathbyspec(dev); |
1852 | if (!getpathbyspec(dev)) { |
1853 | notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n", dev); |
1854 | return 0; |
1855 | } else |
1856 | dev = getpathbyspec(dev); |
1857 | |
1858 | rootdev = findDiskForRoot(); |
1859 | if (!rootdev) { |
1860 | notSuitablePrintf(entry, 0, "can't find root device\n"); |
1861 | return 0; |
1862 | } |
1863 | |
1864 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
1865 | notSuitablePrintf(entry, 0, "uuid missing: rootdev %s, dev %s\n", |
1866 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1867 | free(rootdev); |
1868 | return 0; |
1869 | } |
1870 | |
1871 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
1872 | notSuitablePrintf(entry, 0, "uuid mismatch: rootdev %s, dev %s\n", |
1873 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1874 | free(rootdev); |
1875 | return 0; |
1876 | } |
1877 | |
1878 | free(rootdev); |
1879 | notSuitablePrintf(entry, 1, "\n"); |
1880 | |
1881 | return 1; |
1882 | } |
1883 | |
1884 | /* returns the first match on or after the one pointed to by index (if index |
1885 | is not NULL) which is not marked as skip */ |
1886 | struct singleEntry * findEntryByPath(struct grubConfig * config, |
1887 | const char * kernel, const char * prefix, |
1888 | int * index) { |
1889 | struct singleEntry * entry = NULL; |
1890 | struct singleLine * line; |
1891 | int i; |
1892 | char * chptr; |
1893 | char * rootspec = NULL; |
1894 | enum lineType_e checkType = LT_KERNEL; |
1895 | |
1896 | if (isdigit(*kernel)) { |
1897 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
1898 | |
1899 | i = 0; |
1900 | indexVars[i] = strtol(kernel, &chptr, 10); |
1901 | while (*chptr == ',') { |
1902 | i++; |
1903 | kernel = chptr + 1; |
1904 | indexVars[i] = strtol(kernel, &chptr, 10); |
1905 | } |
1906 | |
1907 | if (*chptr) { |
1908 | /* can't parse it, bail */ |
1909 | return NULL; |
1910 | } |
1911 | |
1912 | indexVars[i + 1] = -1; |
1913 | |
1914 | i = 0; |
1915 | if (index) { |
1916 | while (i < *index) i++; |
1917 | if (indexVars[i] == -1) return NULL; |
1918 | } |
1919 | |
1920 | entry = findEntryByIndex(config, indexVars[i]); |
1921 | if (!entry) return NULL; |
1922 | |
1923 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
1924 | if (!line) return NULL; |
1925 | |
1926 | if (index) *index = indexVars[i]; |
1927 | return entry; |
1928 | } |
1929 | |
1930 | if (!strcmp(kernel, "DEFAULT")) { |
1931 | if (index && *index > config->defaultImage) { |
1932 | entry = NULL; |
1933 | } else { |
1934 | entry = findEntryByIndex(config, config->defaultImage); |
1935 | if (entry && entry->skip) |
1936 | entry = NULL; |
1937 | else if (index) |
1938 | *index = config->defaultImage; |
1939 | } |
1940 | } else if (!strcmp(kernel, "ALL")) { |
1941 | if (index) |
1942 | i = *index; |
1943 | else |
1944 | i = 0; |
1945 | |
1946 | while ((entry = findEntryByIndex(config, i))) { |
1947 | if (!entry->skip) break; |
1948 | i++; |
1949 | } |
1950 | |
1951 | if (entry && index) |
1952 | *index = i; |
1953 | } else { |
1954 | if (index) |
1955 | i = *index; |
1956 | else |
1957 | i = 0; |
1958 | |
1959 | if (!strncmp(kernel, "TITLE=", 6)) { |
1960 | prefix = ""; |
1961 | checkType = LT_TITLE|LT_MENUENTRY; |
1962 | kernel += 6; |
1963 | } |
1964 | |
1965 | for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) { |
1966 | if (entry->skip) continue; |
1967 | |
1968 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry); |
1969 | |
1970 | /* check all the lines matching checkType */ |
1971 | for (line = entry->lines; line; line = line->next) { |
1972 | enum lineType_e ct = checkType; |
1973 | if (entry->multiboot && checkType == LT_KERNEL) |
1974 | ct = LT_KERNEL|LT_KERNEL_EFI|LT_MBMODULE|LT_HYPER; |
1975 | else if (checkType & LT_KERNEL) |
1976 | ct = checkType | LT_KERNEL_EFI; |
1977 | line = getLineByType(ct, line); |
1978 | if (!line) |
1979 | break; /* not found in this entry */ |
1980 | |
1981 | if (line && line->type != LT_MENUENTRY && |
1982 | line->numElements >= 2) { |
1983 | rootspec = getRootSpecifier(line->elements[1].item); |
1984 | if (!strcmp(line->elements[1].item + |
1985 | ((rootspec != NULL) ? strlen(rootspec) : 0), |
1986 | kernel + strlen(prefix))) |
1987 | break; |
1988 | } |
1989 | if(line->type == LT_MENUENTRY && |
1990 | !strcmp(line->elements[1].item, kernel)) |
1991 | break; |
1992 | } |
1993 | |
1994 | /* make sure this entry has a kernel identifier; this skips |
1995 | * non-Linux boot entries (could find netbsd etc, though, which is |
1996 | * unfortunate) |
1997 | */ |
1998 | if (line && getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines)) |
1999 | break; /* found 'im! */ |
2000 | } |
2001 | |
2002 | if (index) *index = i; |
2003 | } |
2004 | |
2005 | return entry; |
2006 | } |
2007 | |
2008 | struct singleEntry * findEntryByTitle(struct grubConfig * cfg, char *title, |
2009 | int * index) { |
2010 | struct singleEntry * entry; |
2011 | struct singleLine * line; |
2012 | int i; |
2013 | char * newtitle; |
2014 | |
2015 | for (i = 0, entry = cfg->entries; entry; entry = entry->next, i++) { |
2016 | if (index && i < *index) |
2017 | continue; |
2018 | line = getLineByType(LT_TITLE, entry->lines); |
2019 | if (!line) |
2020 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2021 | if (!line) |
2022 | continue; |
2023 | newtitle = grub2ExtractTitle(line); |
2024 | if (!newtitle) |
2025 | continue; |
2026 | if (!strcmp(title, newtitle)) |
2027 | break; |
2028 | } |
2029 | |
2030 | if (!entry) |
2031 | return NULL; |
2032 | |
2033 | if (index) |
2034 | *index = i; |
2035 | return entry; |
2036 | } |
2037 | |
2038 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { |
2039 | struct singleEntry * entry; |
2040 | |
2041 | entry = cfg->entries; |
2042 | while (index && entry) { |
2043 | entry = entry->next; |
2044 | index--; |
2045 | } |
2046 | |
2047 | return entry; |
2048 | } |
2049 | |
2050 | /* Find a good template to use for the new kernel. An entry is |
2051 | * good if the kernel and mkinitrd exist (even if the entry |
2052 | * is going to be removed). Try and use the default entry, but |
2053 | * if that doesn't work just take the first. If we can't find one, |
2054 | * bail. */ |
2055 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, |
2056 | int * indexPtr, int skipRemoved, int flags) { |
2057 | struct singleEntry * entry, * entry2; |
2058 | int index; |
2059 | |
2060 | if (cfg->cfi->defaultIsSaved) { |
2061 | if (cfg->cfi->getEnv) { |
2062 | char *defTitle = cfg->cfi->getEnv(cfg->cfi, "saved_entry"); |
2063 | if (defTitle) { |
2064 | int index = 0; |
2065 | entry = findEntryByTitle(cfg, defTitle, &index); |
2066 | } |
2067 | } |
2068 | } else if (cfg->defaultImage > -1) { |
2069 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
2070 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
2071 | if (indexPtr) *indexPtr = cfg->defaultImage; |
2072 | return entry; |
2073 | } |
2074 | } |
2075 | |
2076 | index = 0; |
2077 | while ((entry = findEntryByIndex(cfg, index))) { |
2078 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
2079 | int j; |
2080 | for (j = 0; j < index; j++) { |
2081 | entry2 = findEntryByIndex(cfg, j); |
2082 | if (entry2->skip) index--; |
2083 | } |
2084 | if (indexPtr) *indexPtr = index; |
2085 | |
2086 | return entry; |
2087 | } |
2088 | |
2089 | index++; |
2090 | } |
2091 | |
2092 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); |
2093 | |
2094 | return NULL; |
2095 | } |
2096 | |
2097 | char * findBootPrefix(void) { |
2098 | struct stat sb, sb2; |
2099 | |
2100 | stat("/", &sb); |
2101 | #ifdef __ia64__ |
2102 | stat("/boot/efi/EFI/redhat/", &sb2); |
2103 | #else |
2104 | stat("/boot", &sb2); |
2105 | #endif |
2106 | |
2107 | if (sb.st_dev == sb2.st_dev) |
2108 | return strdup(""); |
2109 | |
2110 | #ifdef __ia64__ |
2111 | return strdup("/boot/efi/EFI/redhat/"); |
2112 | #else |
2113 | return strdup("/boot"); |
2114 | #endif |
2115 | } |
2116 | |
2117 | void markRemovedImage(struct grubConfig * cfg, const char * image, |
2118 | const char * prefix) { |
2119 | struct singleEntry * entry; |
2120 | |
2121 | if (!image) |
2122 | return; |
2123 | |
2124 | /* check and see if we're removing the default image */ |
2125 | if (isdigit(*image)) { |
2126 | entry = findEntryByPath(cfg, image, prefix, NULL); |
2127 | if(entry) |
2128 | entry->skip = 1; |
2129 | return; |
2130 | } |
2131 | |
2132 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
2133 | entry->skip = 1; |
2134 | } |
2135 | |
2136 | void setDefaultImage(struct grubConfig * config, int hasNew, |
2137 | const char * defaultKernelPath, int newIsDefault, |
2138 | const char * prefix, int flags, int index) { |
2139 | struct singleEntry * entry, * entry2, * newDefault; |
2140 | int i, j; |
2141 | |
2142 | if (newIsDefault) { |
2143 | config->defaultImage = 0; |
2144 | return; |
2145 | } else if ((index >= 0) && config->cfi->defaultIsIndex) { |
2146 | if (findEntryByIndex(config, index)) |
2147 | config->defaultImage = index; |
2148 | else |
2149 | config->defaultImage = -1; |
2150 | return; |
2151 | } else if (defaultKernelPath) { |
2152 | i = 0; |
2153 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { |
2154 | config->defaultImage = i; |
2155 | } else { |
2156 | config->defaultImage = -1; |
2157 | return; |
2158 | } |
2159 | } |
2160 | |
2161 | /* defaultImage now points to what we'd like to use, but before any order |
2162 | changes */ |
2163 | if ((config->defaultImage == DEFAULT_SAVED) || |
2164 | (config->defaultImage == DEFAULT_SAVED_GRUB2)) |
2165 | /* default is set to saved, we don't want to change it */ |
2166 | return; |
2167 | |
2168 | if (config->defaultImage > -1) |
2169 | entry = findEntryByIndex(config, config->defaultImage); |
2170 | else |
2171 | entry = NULL; |
2172 | |
2173 | if (entry && !entry->skip) { |
2174 | /* we can preserve the default */ |
2175 | if (hasNew) |
2176 | config->defaultImage++; |
2177 | |
2178 | /* count the number of entries erased before this one */ |
2179 | for (j = 0; j < config->defaultImage; j++) { |
2180 | entry2 = findEntryByIndex(config, j); |
2181 | if (entry2->skip) config->defaultImage--; |
2182 | } |
2183 | } else if (hasNew) { |
2184 | config->defaultImage = 0; |
2185 | } else { |
2186 | /* Either we just erased the default (or the default line was bad |
2187 | * to begin with) and didn't put a new one in. We'll use the first |
2188 | * valid image. */ |
2189 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, |
2190 | flags); |
2191 | if (!newDefault) |
2192 | config->defaultImage = -1; |
2193 | } |
2194 | } |
2195 | |
2196 | void setFallbackImage(struct grubConfig * config, int hasNew) { |
2197 | struct singleEntry * entry, * entry2; |
2198 | int j; |
2199 | |
2200 | if (config->fallbackImage == -1) return; |
2201 | |
2202 | entry = findEntryByIndex(config, config->fallbackImage); |
2203 | if (!entry || entry->skip) { |
2204 | config->fallbackImage = -1; |
2205 | return; |
2206 | } |
2207 | |
2208 | if (hasNew) |
2209 | config->fallbackImage++; |
2210 | |
2211 | /* count the number of entries erased before this one */ |
2212 | for (j = 0; j < config->fallbackImage; j++) { |
2213 | entry2 = findEntryByIndex(config, j); |
2214 | if (entry2->skip) config->fallbackImage--; |
2215 | } |
2216 | } |
2217 | |
2218 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { |
2219 | struct singleLine * line; |
2220 | char * root = NULL; |
2221 | int i; |
2222 | |
2223 | printf("index=%d\n", index); |
2224 | |
2225 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
2226 | if (!line) { |
2227 | printf("non linux entry\n"); |
2228 | return; |
2229 | } |
2230 | |
2231 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2232 | printf("kernel=%s\n", line->elements[1].item); |
2233 | else |
2234 | printf("kernel=%s%s\n", prefix, line->elements[1].item); |
2235 | |
2236 | if (line->numElements >= 3) { |
2237 | printf("args=\""); |
2238 | i = 2; |
2239 | while (i < line->numElements) { |
2240 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
2241 | root = line->elements[i].item + 5; |
2242 | } else { |
2243 | printf("%s%s", line->elements[i].item, |
2244 | line->elements[i].indent); |
2245 | } |
2246 | |
2247 | i++; |
2248 | } |
2249 | printf("\"\n"); |
2250 | } else { |
2251 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2252 | if (line) { |
2253 | char * s; |
2254 | |
2255 | printf("args=\""); |
2256 | i = 1; |
2257 | while (i < line->numElements) { |
2258 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
2259 | root = line->elements[i].item + 5; |
2260 | } else { |
2261 | s = line->elements[i].item; |
2262 | |
2263 | printf("%s%s", s, line->elements[i].indent); |
2264 | } |
2265 | |
2266 | i++; |
2267 | } |
2268 | |
2269 | s = line->elements[i - 1].indent; |
2270 | printf("\"\n"); |
2271 | } |
2272 | } |
2273 | |
2274 | if (!root) { |
2275 | line = getLineByType(LT_ROOT, entry->lines); |
2276 | if (line && line->numElements >= 2) |
2277 | root=line->elements[1].item; |
2278 | } |
2279 | |
2280 | if (root) { |
2281 | char * s = alloca(strlen(root) + 1); |
2282 | |
2283 | strcpy(s, root); |
2284 | if (s[strlen(s) - 1] == '"') |
2285 | s[strlen(s) - 1] = '\0'; |
2286 | /* make sure the root doesn't have a trailing " */ |
2287 | printf("root=%s\n", s); |
2288 | } |
2289 | |
2290 | line = getLineByType(LT_INITRD|LT_INITRD_EFI, entry->lines); |
2291 | |
2292 | if (line && line->numElements >= 2) { |
2293 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2294 | printf("initrd="); |
2295 | else |
2296 | printf("initrd=%s", prefix); |
2297 | |
2298 | for (i = 1; i < line->numElements; i++) |
2299 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
2300 | printf("\n"); |
2301 | } |
2302 | |
2303 | line = getLineByType(LT_TITLE, entry->lines); |
2304 | if (line) { |
2305 | printf("title=%s\n", line->elements[1].item); |
2306 | } else { |
2307 | char * title; |
2308 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2309 | title = grub2ExtractTitle(line); |
2310 | if (title) |
2311 | printf("title=%s\n", title); |
2312 | } |
2313 | } |
2314 | |
2315 | int isSuseSystem(void) { |
2316 | const char * path; |
2317 | const static char default_path[] = "/etc/SuSE-release"; |
2318 | |
2319 | if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL) |
2320 | path = default_path; |
2321 | |
2322 | if (!access(path, R_OK)) |
2323 | return 1; |
2324 | return 0; |
2325 | } |
2326 | |
2327 | int isSuseGrubConf(const char * path) { |
2328 | FILE * grubConf; |
2329 | char * line = NULL; |
2330 | size_t len = 0, res = 0; |
2331 | |
2332 | grubConf = fopen(path, "r"); |
2333 | if (!grubConf) { |
2334 | dbgPrintf("Could not open SuSE configuration file '%s'\n", path); |
2335 | return 0; |
2336 | } |
2337 | |
2338 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2339 | if (!strncmp(line, "setup", 5)) { |
2340 | fclose(grubConf); |
2341 | free(line); |
2342 | return 1; |
2343 | } |
2344 | } |
2345 | |
2346 | dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n", |
2347 | path); |
2348 | |
2349 | fclose(grubConf); |
2350 | free(line); |
2351 | return 0; |
2352 | } |
2353 | |
2354 | int suseGrubConfGetLba(const char * path, int * lbaPtr) { |
2355 | FILE * grubConf; |
2356 | char * line = NULL; |
2357 | size_t res = 0, len = 0; |
2358 | |
2359 | if (!path) return 1; |
2360 | if (!lbaPtr) return 1; |
2361 | |
2362 | grubConf = fopen(path, "r"); |
2363 | if (!grubConf) return 1; |
2364 | |
2365 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2366 | if (line[res - 1] == '\n') |
2367 | line[res - 1] = '\0'; |
2368 | else if (len > res) |
2369 | line[res] = '\0'; |
2370 | else { |
2371 | line = realloc(line, res + 1); |
2372 | line[res] = '\0'; |
2373 | } |
2374 | |
2375 | if (!strncmp(line, "setup", 5)) { |
2376 | if (strstr(line, "--force-lba")) { |
2377 | *lbaPtr = 1; |
2378 | } else { |
2379 | *lbaPtr = 0; |
2380 | } |
2381 | dbgPrintf("lba: %i\n", *lbaPtr); |
2382 | break; |
2383 | } |
2384 | } |
2385 | |
2386 | free(line); |
2387 | fclose(grubConf); |
2388 | return 0; |
2389 | } |
2390 | |
2391 | int suseGrubConfGetInstallDevice(const char * path, char ** devicePtr) { |
2392 | FILE * grubConf; |
2393 | char * line = NULL; |
2394 | size_t res = 0, len = 0; |
2395 | char * lastParamPtr = NULL; |
2396 | char * secLastParamPtr = NULL; |
2397 | char installDeviceNumber = '\0'; |
2398 | char * bounds = NULL; |
2399 | |
2400 | if (!path) return 1; |
2401 | if (!devicePtr) return 1; |
2402 | |
2403 | grubConf = fopen(path, "r"); |
2404 | if (!grubConf) return 1; |
2405 | |
2406 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2407 | if (strncmp(line, "setup", 5)) |
2408 | continue; |
2409 | |
2410 | if (line[res - 1] == '\n') |
2411 | line[res - 1] = '\0'; |
2412 | else if (len > res) |
2413 | line[res] = '\0'; |
2414 | else { |
2415 | line = realloc(line, res + 1); |
2416 | line[res] = '\0'; |
2417 | } |
2418 | |
2419 | lastParamPtr = bounds = line + res; |
2420 | |
2421 | /* Last parameter in grub may be an optional IMAGE_DEVICE */ |
2422 | while (!isspace(*lastParamPtr)) |
2423 | lastParamPtr--; |
2424 | lastParamPtr++; |
2425 | |
2426 | secLastParamPtr = lastParamPtr - 2; |
2427 | dbgPrintf("lastParamPtr: %s\n", lastParamPtr); |
2428 | |
2429 | if (lastParamPtr + 3 > bounds) { |
2430 | dbgPrintf("lastParamPtr going over boundary"); |
2431 | fclose(grubConf); |
2432 | free(line); |
2433 | return 1; |
2434 | } |
2435 | if (!strncmp(lastParamPtr, "(hd", 3)) |
2436 | lastParamPtr += 3; |
2437 | dbgPrintf("lastParamPtr: %c\n", *lastParamPtr); |
2438 | |
2439 | /* |
2440 | * Second last parameter will decide wether last parameter is |
2441 | * an IMAGE_DEVICE or INSTALL_DEVICE |
2442 | */ |
2443 | while (!isspace(*secLastParamPtr)) |
2444 | secLastParamPtr--; |
2445 | secLastParamPtr++; |
2446 | |
2447 | if (secLastParamPtr + 3 > bounds) { |
2448 | dbgPrintf("secLastParamPtr going over boundary"); |
2449 | fclose(grubConf); |
2450 | free(line); |
2451 | return 1; |
2452 | } |
2453 | dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr); |
2454 | if (!strncmp(secLastParamPtr, "(hd", 3)) { |
2455 | secLastParamPtr += 3; |
2456 | dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr); |
2457 | installDeviceNumber = *secLastParamPtr; |
2458 | } else { |
2459 | installDeviceNumber = *lastParamPtr; |
2460 | } |
2461 | |
2462 | *devicePtr = malloc(6); |
2463 | snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber); |
2464 | dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber); |
2465 | fclose(grubConf); |
2466 | free(line); |
2467 | return 0; |
2468 | } |
2469 | |
2470 | free(line); |
2471 | fclose(grubConf); |
2472 | return 1; |
2473 | } |
2474 | |
2475 | int grubGetBootFromDeviceMap(const char * device, |
2476 | char ** bootPtr) { |
2477 | FILE * deviceMap; |
2478 | char * line = NULL; |
2479 | size_t res = 0, len = 0; |
2480 | char * devicePtr; |
2481 | char * bounds = NULL; |
2482 | const char * path; |
2483 | const static char default_path[] = "/boot/grub/device.map"; |
2484 | |
2485 | if (!device) return 1; |
2486 | if (!bootPtr) return 1; |
2487 | |
2488 | if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL) |
2489 | path = default_path; |
2490 | |
2491 | dbgPrintf("opening grub device.map file from: %s\n", path); |
2492 | deviceMap = fopen(path, "r"); |
2493 | if (!deviceMap) |
2494 | return 1; |
2495 | |
2496 | while ((res = getline(&line, &len, deviceMap)) != -1) { |
2497 | if (!strncmp(line, "#", 1)) |
2498 | continue; |
2499 | |
2500 | if (line[res - 1] == '\n') |
2501 | line[res - 1] = '\0'; |
2502 | else if (len > res) |
2503 | line[res] = '\0'; |
2504 | else { |
2505 | line = realloc(line, res + 1); |
2506 | line[res] = '\0'; |
2507 | } |
2508 | |
2509 | devicePtr = line; |
2510 | bounds = line + res; |
2511 | |
2512 | while ((isspace(*line) && ((devicePtr + 1) <= bounds))) |
2513 | devicePtr++; |
2514 | dbgPrintf("device: %s\n", devicePtr); |
2515 | |
2516 | if (!strncmp(devicePtr, device, strlen(device))) { |
2517 | devicePtr += strlen(device); |
2518 | while (isspace(*devicePtr) && ((devicePtr + 1) <= bounds)) |
2519 | devicePtr++; |
2520 | |
2521 | *bootPtr = strdup(devicePtr); |
2522 | break; |
2523 | } |
2524 | } |
2525 | |
2526 | free(line); |
2527 | fclose(deviceMap); |
2528 | return 0; |
2529 | } |
2530 | |
2531 | int suseGrubConfGetBoot(const char * path, char ** bootPtr) { |
2532 | char * grubDevice; |
2533 | |
2534 | if (suseGrubConfGetInstallDevice(path, &grubDevice)) |
2535 | dbgPrintf("error looking for grub installation device\n"); |
2536 | else |
2537 | dbgPrintf("grubby installation device: %s\n", grubDevice); |
2538 | |
2539 | if (grubGetBootFromDeviceMap(grubDevice, bootPtr)) |
2540 | dbgPrintf("error looking for grub boot device\n"); |
2541 | else |
2542 | dbgPrintf("grubby boot device: %s\n", *bootPtr); |
2543 | |
2544 | free(grubDevice); |
2545 | return 0; |
2546 | } |
2547 | |
2548 | int parseSuseGrubConf(int * lbaPtr, char ** bootPtr) { |
2549 | /* |
2550 | * This SuSE grub configuration file at this location is not your average |
2551 | * grub configuration file, but instead the grub commands used to setup |
2552 | * grub on that system. |
2553 | */ |
2554 | const char * path; |
2555 | const static char default_path[] = "/etc/grub.conf"; |
2556 | |
2557 | if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL) |
2558 | path = default_path; |
2559 | |
2560 | if (!isSuseGrubConf(path)) return 1; |
2561 | |
2562 | if (lbaPtr) { |
2563 | *lbaPtr = 0; |
2564 | if (suseGrubConfGetLba(path, lbaPtr)) |
2565 | return 1; |
2566 | } |
2567 | |
2568 | if (bootPtr) { |
2569 | *bootPtr = NULL; |
2570 | suseGrubConfGetBoot(path, bootPtr); |
2571 | } |
2572 | |
2573 | return 0; |
2574 | } |
2575 | |
2576 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { |
2577 | FILE * in; |
2578 | char buf[1024]; |
2579 | char * chptr; |
2580 | char * start; |
2581 | char * param; |
2582 | |
2583 | in = fopen("/etc/conf.d/grub", "r"); |
2584 | if (!in) return 1; |
2585 | |
2586 | if (lbaPtr) *lbaPtr = 0; |
2587 | if (bootPtr) *bootPtr = NULL; |
2588 | |
2589 | while (fgets(buf, sizeof(buf), in)) { |
2590 | start = buf; |
2591 | while (isspace(*start)) start++; |
2592 | if (*start == '#') continue; |
2593 | |
2594 | chptr = strchr(start, '='); |
2595 | if (!chptr) continue; |
2596 | chptr--; |
2597 | while (*chptr && isspace(*chptr)) chptr--; |
2598 | chptr++; |
2599 | *chptr = '\0'; |
2600 | |
2601 | param = chptr + 1; |
2602 | while (*param && isspace(*param)) param++; |
2603 | if (*param == '=') { |
2604 | param++; |
2605 | while (*param && isspace(*param)) param++; |
2606 | } |
2607 | |
2608 | chptr = param; |
2609 | while (*chptr && !isspace(*chptr)) chptr++; |
2610 | *chptr = '\0'; |
2611 | |
2612 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
2613 | *lbaPtr = 1; |
2614 | else if (!strcmp(start, "boot") && bootPtr) |
2615 | *bootPtr = strdup(param); |
2616 | } |
2617 | |
2618 | fclose(in); |
2619 | |
2620 | return 0; |
2621 | } |
2622 | |
2623 | void dumpSysconfigGrub(void) { |
2624 | char * boot = NULL; |
2625 | int lba; |
2626 | |
2627 | if (isSuseSystem()) { |
2628 | if (parseSuseGrubConf(&lba, &boot)) { |
2629 | free(boot); |
2630 | return; |
2631 | } |
2632 | } else { |
2633 | if (parseSysconfigGrub(&lba, &boot)) { |
2634 | free(boot); |
2635 | return; |
2636 | } |
2637 | } |
2638 | |
2639 | if (lba) printf("lba\n"); |
2640 | if (boot) { |
2641 | printf("boot=%s\n", boot); |
2642 | free(boot); |
2643 | } |
2644 | } |
2645 | |
2646 | int displayInfo(struct grubConfig * config, char * kernel, |
2647 | const char * prefix) { |
2648 | int i = 0; |
2649 | struct singleEntry * entry; |
2650 | struct singleLine * line; |
2651 | |
2652 | entry = findEntryByPath(config, kernel, prefix, &i); |
2653 | if (!entry) { |
2654 | fprintf(stderr, _("grubby: kernel not found\n")); |
2655 | return 1; |
2656 | } |
2657 | |
2658 | /* this is a horrible hack to support /etc/conf.d/grub; there must |
2659 | be a better way */ |
2660 | if (config->cfi == &grubConfigType) { |
2661 | dumpSysconfigGrub(); |
2662 | } else { |
2663 | line = getLineByType(LT_BOOT, config->theLines); |
2664 | if (line && line->numElements >= 1) { |
2665 | printf("boot=%s\n", line->elements[1].item); |
2666 | } |
2667 | |
2668 | line = getLineByType(LT_LBA, config->theLines); |
2669 | if (line) printf("lba\n"); |
2670 | } |
2671 | |
2672 | displayEntry(entry, prefix, i); |
2673 | |
2674 | i++; |
2675 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
2676 | displayEntry(entry, prefix, i); |
2677 | i++; |
2678 | } |
2679 | |
2680 | return 0; |
2681 | } |
2682 | |
2683 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
2684 | struct singleLine * tmplLine, |
2685 | struct singleLine * prevLine, |
2686 | const char * val, |
2687 | struct configFileInfo * cfi) |
2688 | { |
2689 | struct singleLine * newLine = lineDup(tmplLine); |
2690 | |
2691 | if (isEfi && cfi == &grub2ConfigType) { |
2692 | enum lineType_e old = newLine->type; |
2693 | newLine->type = preferredLineType(newLine->type, cfi); |
2694 | if (old != newLine->type) |
2695 | newLine->elements[0].item = getKeyByType(newLine->type, cfi); |
2696 | } |
2697 | |
2698 | if (val) { |
2699 | /* override the inherited value with our own. |
2700 | * This is a little weak because it only applies to elements[1] |
2701 | */ |
2702 | if (newLine->numElements > 1) |
2703 | removeElement(newLine, 1); |
2704 | insertElement(newLine, val, 1, cfi); |
2705 | |
2706 | /* but try to keep the rootspec from the template... sigh */ |
2707 | if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD|LT_KERNEL_EFI|LT_INITRD_EFI)) { |
2708 | char * rootspec = getRootSpecifier(tmplLine->elements[1].item); |
2709 | if (rootspec != NULL) { |
2710 | free(newLine->elements[1].item); |
2711 | newLine->elements[1].item = |
2712 | sdupprintf("%s%s", rootspec, val); |
2713 | } |
2714 | } |
2715 | } |
2716 | |
2717 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? |
2718 | newLine->elements[0].item : ""); |
2719 | |
2720 | if (!entry->lines) { |
2721 | /* first one on the list */ |
2722 | entry->lines = newLine; |
2723 | } else if (prevLine) { |
2724 | /* add after prevLine */ |
2725 | newLine->next = prevLine->next; |
2726 | prevLine->next = newLine; |
2727 | } |
2728 | |
2729 | return newLine; |
2730 | } |
2731 | |
2732 | /* val may be NULL */ |
2733 | struct singleLine * addLine(struct singleEntry * entry, |
2734 | struct configFileInfo * cfi, |
2735 | enum lineType_e type, char * defaultIndent, |
2736 | const char * val) { |
2737 | struct singleLine * line, * prev; |
2738 | struct keywordTypes * kw; |
2739 | struct singleLine tmpl; |
2740 | |
2741 | /* NB: This function shouldn't allocate items on the heap, rather on the |
2742 | * stack since it calls addLineTmpl which will make copies. |
2743 | */ |
2744 | if (type == LT_TITLE && cfi->titleBracketed) { |
2745 | /* we're doing a bracketed title (zipl) */ |
2746 | tmpl.type = type; |
2747 | tmpl.numElements = 1; |
2748 | tmpl.elements = alloca(sizeof(*tmpl.elements)); |
2749 | tmpl.elements[0].item = alloca(strlen(val)+3); |
2750 | sprintf(tmpl.elements[0].item, "[%s]", val); |
2751 | tmpl.elements[0].indent = ""; |
2752 | val = NULL; |
2753 | } else if (type == LT_MENUENTRY) { |
2754 | char *lineend = "--class gnu-linux --class gnu --class os {"; |
2755 | if (!val) { |
2756 | fprintf(stderr, "Line type LT_MENUENTRY requires a value\n"); |
2757 | abort(); |
2758 | } |
2759 | kw = getKeywordByType(type, cfi); |
2760 | if (!kw) { |
2761 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2762 | abort(); |
2763 | } |
2764 | tmpl.indent = ""; |
2765 | tmpl.type = type; |
2766 | tmpl.numElements = 3; |
2767 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2768 | tmpl.elements[0].item = kw->key; |
2769 | tmpl.elements[0].indent = alloca(2); |
2770 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2771 | tmpl.elements[1].item = (char *)val; |
2772 | tmpl.elements[1].indent = alloca(2); |
2773 | sprintf(tmpl.elements[1].indent, "%c", kw->nextChar); |
2774 | tmpl.elements[2].item = alloca(strlen(lineend)+1); |
2775 | strcpy(tmpl.elements[2].item, lineend); |
2776 | tmpl.elements[2].indent = ""; |
2777 | } else { |
2778 | kw = getKeywordByType(type, cfi); |
2779 | if (!kw) { |
2780 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2781 | abort(); |
2782 | } |
2783 | tmpl.type = type; |
2784 | tmpl.numElements = val ? 2 : 1; |
2785 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2786 | tmpl.elements[0].item = kw->key; |
2787 | tmpl.elements[0].indent = alloca(2); |
2788 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2789 | if (val) { |
2790 | tmpl.elements[1].item = (char *)val; |
2791 | tmpl.elements[1].indent = ""; |
2792 | } |
2793 | } |
2794 | |
2795 | /* The last non-empty line gives us the indention to us and the line |
2796 | to insert after. Note that comments are considered empty lines, which |
2797 | may not be ideal? If there are no lines or we are looking at the |
2798 | first line, we use defaultIndent (the first line is normally indented |
2799 | differently from the rest) */ |
2800 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
2801 | if (line->numElements) prev = line; |
2802 | /* fall back on the last line if prev isn't otherwise set */ |
2803 | if (!line->next && !prev) prev = line; |
2804 | } |
2805 | |
2806 | struct singleLine *menuEntry; |
2807 | menuEntry = getLineByType(LT_MENUENTRY, entry->lines); |
2808 | if (tmpl.type == LT_ENTRY_END) { |
2809 | if (menuEntry) |
2810 | tmpl.indent = menuEntry->indent; |
2811 | else |
2812 | tmpl.indent = defaultIndent ?: ""; |
2813 | } else if (tmpl.type != LT_MENUENTRY) { |
2814 | if (menuEntry) |
2815 | tmpl.indent = "\t"; |
2816 | else if (prev == entry->lines) |
2817 | tmpl.indent = defaultIndent ?: ""; |
2818 | else |
2819 | tmpl.indent = prev->indent; |
2820 | } |
2821 | |
2822 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
2823 | } |
2824 | |
2825 | void removeLine(struct singleEntry * entry, struct singleLine * line) { |
2826 | struct singleLine * prev; |
2827 | int i; |
2828 | |
2829 | for (i = 0; i < line->numElements; i++) { |
2830 | free(line->elements[i].item); |
2831 | free(line->elements[i].indent); |
2832 | } |
2833 | free(line->elements); |
2834 | free(line->indent); |
2835 | |
2836 | if (line == entry->lines) { |
2837 | entry->lines = line->next; |
2838 | } else { |
2839 | prev = entry->lines; |
2840 | while (prev->next != line) prev = prev->next; |
2841 | prev->next = line->next; |
2842 | } |
2843 | |
2844 | free(line); |
2845 | } |
2846 | |
2847 | static void requote(struct singleLine *tmplLine, struct configFileInfo * cfi) |
2848 | { |
2849 | struct singleLine newLine = { |
2850 | .indent = tmplLine->indent, |
2851 | .type = tmplLine->type, |
2852 | .next = tmplLine->next, |
2853 | }; |
2854 | int firstQuotedItem = -1; |
2855 | int quoteLen = 0; |
2856 | int j; |
2857 | int element = 0; |
2858 | char *c; |
2859 | |
2860 | c = malloc(strlen(tmplLine->elements[0].item) + 1); |
2861 | strcpy(c, tmplLine->elements[0].item); |
2862 | insertElement(&newLine, c, element++, cfi); |
2863 | free(c); |
2864 | c = NULL; |
2865 | |
2866 | for (j = 1; j < tmplLine->numElements; j++) { |
2867 | if (firstQuotedItem == -1) { |
2868 | quoteLen += strlen(tmplLine->elements[j].item); |
2869 | |
2870 | if (isquote(tmplLine->elements[j].item[0])) { |
2871 | firstQuotedItem = j; |
2872 | quoteLen += strlen(tmplLine->elements[j].indent); |
2873 | } else { |
2874 | c = malloc(quoteLen + 1); |
2875 | strcpy(c, tmplLine->elements[j].item); |
2876 | insertElement(&newLine, c, element++, cfi); |
2877 | free(c); |
2878 | quoteLen = 0; |
2879 | } |
2880 | } else { |
2881 | int itemlen = strlen(tmplLine->elements[j].item); |
2882 | quoteLen += itemlen; |
2883 | quoteLen += strlen(tmplLine->elements[j].indent); |
2884 | |
2885 | if (isquote(tmplLine->elements[j].item[itemlen - 1])) { |
2886 | c = malloc(quoteLen + 1); |
2887 | c[0] = '\0'; |
2888 | for (int i = firstQuotedItem; i < j+1; i++) { |
2889 | strcat(c, tmplLine->elements[i].item); |
2890 | strcat(c, tmplLine->elements[i].indent); |
2891 | } |
2892 | insertElement(&newLine, c, element++, cfi); |
2893 | free(c); |
2894 | |
2895 | firstQuotedItem = -1; |
2896 | quoteLen = 0; |
2897 | } |
2898 | } |
2899 | } |
2900 | while (tmplLine->numElements) |
2901 | removeElement(tmplLine, 0); |
2902 | if (tmplLine->elements) |
2903 | free(tmplLine->elements); |
2904 | |
2905 | tmplLine->numElements = newLine.numElements; |
2906 | tmplLine->elements = newLine.elements; |
2907 | } |
2908 | |
2909 | static void insertElement(struct singleLine * line, |
2910 | const char * item, int insertHere, |
2911 | struct configFileInfo * cfi) |
2912 | { |
2913 | struct keywordTypes * kw; |
2914 | char indent[2] = ""; |
2915 | |
2916 | /* sanity check */ |
2917 | if (insertHere > line->numElements) { |
2918 | dbgPrintf("insertElement() adjusting insertHere from %d to %d\n", |
2919 | insertHere, line->numElements); |
2920 | insertHere = line->numElements; |
2921 | } |
2922 | |
2923 | line->elements = realloc(line->elements, (line->numElements + 1) * |
2924 | sizeof(*line->elements)); |
2925 | memmove(&line->elements[insertHere+1], |
2926 | &line->elements[insertHere], |
2927 | (line->numElements - insertHere) * |
2928 | sizeof(*line->elements)); |
2929 | line->elements[insertHere].item = strdup(item); |
2930 | |
2931 | kw = getKeywordByType(line->type, cfi); |
2932 | |
2933 | if (line->numElements == 0) { |
2934 | indent[0] = '\0'; |
2935 | } else if (insertHere == 0) { |
2936 | indent[0] = kw->nextChar; |
2937 | } else if (kw->separatorChar != '\0') { |
2938 | indent[0] = kw->separatorChar; |
2939 | } else { |
2940 | indent[0] = ' '; |
2941 | } |
2942 | |
2943 | if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') { |
2944 | /* move the end-of-line forward */ |
2945 | line->elements[insertHere].indent = |
2946 | line->elements[insertHere-1].indent; |
2947 | line->elements[insertHere-1].indent = strdup(indent); |
2948 | } else { |
2949 | line->elements[insertHere].indent = strdup(indent); |
2950 | } |
2951 | |
2952 | line->numElements++; |
2953 | |
2954 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", |
2955 | line->elements[0].item, |
2956 | line->elements[insertHere].item, |
2957 | line->elements[insertHere].indent, |
2958 | insertHere); |
2959 | } |
2960 | |
2961 | static void removeElement(struct singleLine * line, int removeHere) { |
2962 | int i; |
2963 | |
2964 | /* sanity check */ |
2965 | if (removeHere >= line->numElements) return; |
2966 | |
2967 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, |
2968 | removeHere, line->elements[removeHere].item); |
2969 | |
2970 | free(line->elements[removeHere].item); |
2971 | |
2972 | if (removeHere > 1) { |
2973 | /* previous argument gets this argument's post-indentation */ |
2974 | free(line->elements[removeHere-1].indent); |
2975 | line->elements[removeHere-1].indent = |
2976 | line->elements[removeHere].indent; |
2977 | } else { |
2978 | free(line->elements[removeHere].indent); |
2979 | } |
2980 | |
2981 | /* now collapse the array, but don't bother to realloc smaller */ |
2982 | for (i = removeHere; i < line->numElements - 1; i++) |
2983 | line->elements[i] = line->elements[i + 1]; |
2984 | |
2985 | line->numElements--; |
2986 | } |
2987 | |
2988 | int argMatch(const char * one, const char * two) { |
2989 | char * first, * second; |
2990 | char * chptr; |
2991 | |
2992 | first = strcpy(alloca(strlen(one) + 1), one); |
2993 | second = strcpy(alloca(strlen(two) + 1), two); |
2994 | |
2995 | chptr = strchr(first, '='); |
2996 | if (chptr) *chptr = '\0'; |
2997 | |
2998 | chptr = strchr(second, '='); |
2999 | if (chptr) *chptr = '\0'; |
3000 | |
3001 | return strcmp(first, second); |
3002 | } |
3003 | |
3004 | int updateActualImage(struct grubConfig * cfg, const char * image, |
3005 | const char * prefix, const char * addArgs, |
3006 | const char * removeArgs, int multibootArgs) { |
3007 | struct singleEntry * entry; |
3008 | struct singleLine * line, * rootLine; |
3009 | int index = 0; |
3010 | int i, k; |
3011 | const char ** newArgs, ** oldArgs; |
3012 | const char ** arg; |
3013 | int useKernelArgs, useRoot; |
3014 | int firstElement; |
3015 | int *usedElements; |
3016 | int doreplace; |
3017 | |
3018 | if (!image) return 0; |
3019 | |
3020 | if (!addArgs) { |
3021 | newArgs = malloc(sizeof(*newArgs)); |
3022 | *newArgs = NULL; |
3023 | } else { |
3024 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
3025 | fprintf(stderr, |
3026 | _("grubby: error separating arguments '%s'\n"), addArgs); |
3027 | return 1; |
3028 | } |
3029 | } |
3030 | |
3031 | if (!removeArgs) { |
3032 | oldArgs = malloc(sizeof(*oldArgs)); |
3033 | *oldArgs = NULL; |
3034 | } else { |
3035 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
3036 | fprintf(stderr, |
3037 | _("grubby: error separating arguments '%s'\n"), removeArgs); |
3038 | free(newArgs); |
3039 | return 1; |
3040 | } |
3041 | } |
3042 | |
3043 | |
3044 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
3045 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); |
3046 | |
3047 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
3048 | && !multibootArgs); |
3049 | |
3050 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3051 | |
3052 | if (multibootArgs && !entry->multiboot) |
3053 | continue; |
3054 | |
3055 | /* Determine where to put the args. If this config supports |
3056 | * LT_KERNELARGS, use that. Otherwise use |
3057 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. |
3058 | */ |
3059 | if (useKernelArgs) { |
3060 | line = getLineByType(LT_KERNELARGS, entry->lines); |
3061 | if (!line) { |
3062 | /* no LT_KERNELARGS, need to add it */ |
3063 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, |
3064 | cfg->secondaryIndent, NULL); |
3065 | } |
3066 | firstElement = 1; |
3067 | |
3068 | } else if (multibootArgs) { |
3069 | line = getLineByType(LT_HYPER, entry->lines); |
3070 | if (!line) { |
3071 | /* a multiboot entry without LT_HYPER? */ |
3072 | continue; |
3073 | } |
3074 | firstElement = 2; |
3075 | |
3076 | } else { |
3077 | line = getLineByType(LT_KERNEL|LT_MBMODULE|LT_KERNEL_EFI, entry->lines); |
3078 | if (!line) { |
3079 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ |
3080 | continue; |
3081 | } |
3082 | firstElement = 2; |
3083 | } |
3084 | |
3085 | /* handle the elilo case which does: |
3086 | * append="hypervisor args -- kernel args" |
3087 | */ |
3088 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { |
3089 | /* this is a multiboot entry, make sure there's |
3090 | * -- on the args line |
3091 | */ |
3092 | for (i = firstElement; i < line->numElements; i++) { |
3093 | if (!strcmp(line->elements[i].item, "--")) |
3094 | break; |
3095 | } |
3096 | if (i == line->numElements) { |
3097 | /* assume all existing args are kernel args, |
3098 | * prepend -- to make it official |
3099 | */ |
3100 | insertElement(line, "--", firstElement, cfg->cfi); |
3101 | i = firstElement; |
3102 | } |
3103 | if (!multibootArgs) { |
3104 | /* kernel args start after the -- */ |
3105 | firstElement = i + 1; |
3106 | } |
3107 | } else if (cfg->cfi->mbConcatArgs) { |
3108 | /* this is a non-multiboot entry, remove hyper args */ |
3109 | for (i = firstElement; i < line->numElements; i++) { |
3110 | if (!strcmp(line->elements[i].item, "--")) |
3111 | break; |
3112 | } |
3113 | if (i < line->numElements) { |
3114 | /* remove args up to -- */ |
3115 | while (strcmp(line->elements[firstElement].item, "--")) |
3116 | removeElement(line, firstElement); |
3117 | /* remove -- */ |
3118 | removeElement(line, firstElement); |
3119 | } |
3120 | } |
3121 | |
3122 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
3123 | |
3124 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
3125 | |
3126 | doreplace = 1; |
3127 | for (i = firstElement; i < line->numElements; i++) { |
3128 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
3129 | !strcmp(line->elements[i].item, "--")) |
3130 | { |
3131 | /* reached the end of hyper args, insert here */ |
3132 | doreplace = 0; |
3133 | break; |
3134 | } |
3135 | if (usedElements[i]) |
3136 | continue; |
3137 | if (!argMatch(line->elements[i].item, *arg)) { |
3138 | usedElements[i]=1; |
3139 | break; |
3140 | } |
3141 | } |
3142 | |
3143 | if (i < line->numElements && doreplace) { |
3144 | /* direct replacement */ |
3145 | free(line->elements[i].item); |
3146 | line->elements[i].item = strdup(*arg); |
3147 | |
3148 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
3149 | /* root= replacement */ |
3150 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3151 | if (rootLine) { |
3152 | free(rootLine->elements[1].item); |
3153 | rootLine->elements[1].item = strdup(*arg + 5); |
3154 | } else { |
3155 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, |
3156 | cfg->secondaryIndent, *arg + 5); |
3157 | } |
3158 | } |
3159 | |
3160 | else { |
3161 | /* insert/append */ |
3162 | insertElement(line, *arg, i, cfg->cfi); |
3163 | usedElements = realloc(usedElements, line->numElements * |
3164 | sizeof(*usedElements)); |
3165 | memmove(&usedElements[i + 1], &usedElements[i], |
3166 | line->numElements - i - 1); |
3167 | usedElements[i] = 1; |
3168 | |
3169 | /* if we updated a root= here even though there is a |
3170 | LT_ROOT available we need to remove the LT_ROOT entry |
3171 | (this will happen if we switch from a device to a label) */ |
3172 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
3173 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3174 | if (rootLine) |
3175 | removeLine(entry, rootLine); |
3176 | } |
3177 | } |
3178 | } |
3179 | |
3180 | free(usedElements); |
3181 | |
3182 | for (arg = oldArgs; *arg; arg++) { |
3183 | for (i = firstElement; i < line->numElements; i++) { |
3184 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
3185 | !strcmp(line->elements[i].item, "--")) |
3186 | /* reached the end of hyper args, stop here */ |
3187 | break; |
3188 | if (!argMatch(line->elements[i].item, *arg)) { |
3189 | removeElement(line, i); |
3190 | break; |
3191 | } |
3192 | } |
3193 | /* handle removing LT_ROOT line too */ |
3194 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
3195 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3196 | if (rootLine) |
3197 | removeLine(entry, rootLine); |
3198 | } |
3199 | } |
3200 | |
3201 | if (line->numElements == 1) { |
3202 | /* don't need the line at all (note it has to be a |
3203 | LT_KERNELARGS for this to happen */ |
3204 | removeLine(entry, line); |
3205 | } |
3206 | } |
3207 | |
3208 | free(newArgs); |
3209 | free(oldArgs); |
3210 | |
3211 | return 0; |
3212 | } |
3213 | |
3214 | int updateImage(struct grubConfig * cfg, const char * image, |
3215 | const char * prefix, const char * addArgs, |
3216 | const char * removeArgs, |
3217 | const char * addMBArgs, const char * removeMBArgs) { |
3218 | int rc = 0; |
3219 | |
3220 | if (!image) return rc; |
3221 | |
3222 | /* update the main args first... */ |
3223 | if (addArgs || removeArgs) |
3224 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); |
3225 | if (rc) return rc; |
3226 | |
3227 | /* and now any multiboot args */ |
3228 | if (addMBArgs || removeMBArgs) |
3229 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); |
3230 | return rc; |
3231 | } |
3232 | |
3233 | int updateInitrd(struct grubConfig * cfg, const char * image, |
3234 | const char * prefix, const char * initrd) { |
3235 | struct singleEntry * entry; |
3236 | struct singleLine * line, * kernelLine, *endLine = NULL; |
3237 | int index = 0; |
3238 | |
3239 | if (!image) return 0; |
3240 | |
3241 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3242 | kernelLine = getLineByType(LT_KERNEL|LT_KERNEL_EFI, entry->lines); |
3243 | if (!kernelLine) continue; |
3244 | |
3245 | line = getLineByType(LT_INITRD|LT_INITRD_EFI, entry->lines); |
3246 | if (line) |
3247 | removeLine(entry, line); |
3248 | if (prefix) { |
3249 | int prefixLen = strlen(prefix); |
3250 | if (!strncmp(initrd, prefix, prefixLen)) |
3251 | initrd += prefixLen; |
3252 | } |
3253 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
3254 | if (endLine) |
3255 | removeLine(entry, endLine); |
3256 | line = addLine(entry, cfg->cfi, preferredLineType(LT_INITRD, cfg->cfi), |
3257 | kernelLine->indent, initrd); |
3258 | if (!line) |
3259 | return 1; |
3260 | if (endLine) { |
3261 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
3262 | if (!line) |
3263 | return 1; |
3264 | } |
3265 | |
3266 | break; |
3267 | } |
3268 | |
3269 | return 0; |
3270 | } |
3271 | |
3272 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { |
3273 | int fd; |
3274 | unsigned char bootSect[512]; |
3275 | int offset; |
3276 | |
3277 | fd = open(device, O_RDONLY); |
3278 | if (fd < 0) { |
3279 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3280 | device, strerror(errno)); |
3281 | return 1; |
3282 | } |
3283 | |
3284 | if (read(fd, bootSect, 512) != 512) { |
3285 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3286 | device, strerror(errno)); |
3287 | return 1; |
3288 | } |
3289 | close(fd); |
3290 | |
3291 | /* first three bytes should match, a jmp short should be in there */ |
3292 | if (memcmp(boot, bootSect, 3)) |
3293 | return 0; |
3294 | |
3295 | if (boot[1] == JMP_SHORT_OPCODE) { |
3296 | offset = boot[2] + 2; |
3297 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
3298 | offset = (boot[3] << 8) + boot[2] + 2; |
3299 | } else if (boot[0] == JMP_SHORT_OPCODE) { |
3300 | offset = boot[1] + 2; |
3301 | /* |
3302 | * it looks like grub, when copying stage1 into the mbr, patches stage1 |
3303 | * right after the JMP location, replacing other instructions such as |
3304 | * JMPs for NOOPs. So, relax the check a little bit by skipping those |
3305 | * different bytes. |
3306 | */ |
3307 | if ((bootSect[offset + 1] == NOOP_OPCODE) |
3308 | && (bootSect[offset + 2] == NOOP_OPCODE)) { |
3309 | offset = offset + 3; |
3310 | } |
3311 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
3312 | offset = (boot[2] << 8) + boot[1] + 2; |
3313 | } else { |
3314 | return 0; |
3315 | } |
3316 | |
3317 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
3318 | return 0; |
3319 | |
3320 | return 2; |
3321 | } |
3322 | |
3323 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { |
3324 | int fd; |
3325 | char buf[65536]; |
3326 | char * end; |
3327 | char * chptr; |
3328 | char * chptr2; |
3329 | int rc; |
3330 | |
3331 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
3332 | *raw* devices listed in there */ |
3333 | |
3334 | if (!strncmp(mdDev, "/dev/", 5)) |
3335 | mdDev += 5; |
3336 | |
3337 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
3338 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
3339 | strerror(errno)); |
3340 | return 2; |
3341 | } |
3342 | |
3343 | rc = read(fd, buf, sizeof(buf) - 1); |
3344 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
3345 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
3346 | strerror(errno)); |
3347 | close(fd); |
3348 | return 2; |
3349 | } |
3350 | close(fd); |
3351 | buf[rc] = '\0'; |
3352 | |
3353 | chptr = buf; |
3354 | while (*chptr) { |
3355 | end = strchr(chptr, '\n'); |
3356 | if (!end) break; |
3357 | *end = '\0'; |
3358 | |
3359 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
3360 | chptr[strlen(mdDev)] == ' ') { |
3361 | |
3362 | /* found the device */ |
3363 | while (*chptr && *chptr != ':') chptr++; |
3364 | chptr++; |
3365 | while (*chptr && isspace(*chptr)) chptr++; |
3366 | |
3367 | /* skip the "active" bit */ |
3368 | while (*chptr && !isspace(*chptr)) chptr++; |
3369 | while (*chptr && isspace(*chptr)) chptr++; |
3370 | |
3371 | /* skip the raid level */ |
3372 | while (*chptr && !isspace(*chptr)) chptr++; |
3373 | while (*chptr && isspace(*chptr)) chptr++; |
3374 | |
3375 | /* everything else is partition stuff */ |
3376 | while (*chptr) { |
3377 | chptr2 = chptr; |
3378 | while (*chptr2 && *chptr2 != '[') chptr2++; |
3379 | if (!*chptr2) break; |
3380 | |
3381 | /* yank off the numbers at the end */ |
3382 | chptr2--; |
3383 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; |
3384 | chptr2++; |
3385 | *chptr2 = '\0'; |
3386 | |
3387 | /* Better, now we need the /dev/ back. We're done with |
3388 | * everything before this point, so we can just put |
3389 | * the /dev/ part there. There will always be room. */ |
3390 | memcpy(chptr - 5, "/dev/", 5); |
3391 | rc = checkDeviceBootloader(chptr - 5, boot); |
3392 | if (rc != 2) { |
3393 | return rc; |
3394 | } |
3395 | |
3396 | chptr = chptr2 + 1; |
3397 | /* skip the [11] bit */ |
3398 | while (*chptr && !isspace(*chptr)) chptr++; |
3399 | /* and move to the next one */ |
3400 | while (*chptr && isspace(*chptr)) chptr++; |
3401 | } |
3402 | |
3403 | /* we're good to go */ |
3404 | return 2; |
3405 | } |
3406 | |
3407 | chptr = end + 1; |
3408 | } |
3409 | |
3410 | fprintf(stderr, |
3411 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
3412 | mdDev); |
3413 | return 0; |
3414 | } |
3415 | |
3416 | int checkForLilo(struct grubConfig * config) { |
3417 | int fd; |
3418 | unsigned char boot[512]; |
3419 | struct singleLine * line; |
3420 | |
3421 | for (line = config->theLines; line; line = line->next) |
3422 | if (line->type == LT_BOOT) break; |
3423 | |
3424 | if (!line) { |
3425 | fprintf(stderr, |
3426 | _("grubby: no boot line found in lilo configuration\n")); |
3427 | return 1; |
3428 | } |
3429 | |
3430 | if (line->numElements != 2) return 1; |
3431 | |
3432 | fd = open("/boot/boot.b", O_RDONLY); |
3433 | if (fd < 0) { |
3434 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3435 | "/boot/boot.b", strerror(errno)); |
3436 | return 1; |
3437 | } |
3438 | |
3439 | if (read(fd, boot, 512) != 512) { |
3440 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3441 | "/boot/boot.b", strerror(errno)); |
3442 | return 1; |
3443 | } |
3444 | close(fd); |
3445 | |
3446 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
3447 | return checkLiloOnRaid(line->elements[1].item, boot); |
3448 | |
3449 | return checkDeviceBootloader(line->elements[1].item, boot); |
3450 | } |
3451 | |
3452 | int checkForGrub2(struct grubConfig * config) { |
3453 | if (!access("/etc/grub.d/", R_OK)) |
3454 | return 2; |
3455 | |
3456 | return 1; |
3457 | } |
3458 | |
3459 | int checkForGrub(struct grubConfig * config) { |
3460 | int fd; |
3461 | unsigned char bootSect[512]; |
3462 | char * boot; |
3463 | int onSuse = isSuseSystem(); |
3464 | |
3465 | |
3466 | if (onSuse) { |
3467 | if (parseSuseGrubConf(NULL, &boot)) |
3468 | return 0; |
3469 | } else { |
3470 | if (parseSysconfigGrub(NULL, &boot)) |
3471 | return 0; |
3472 | } |
3473 | |
3474 | /* assume grub is not installed -- not an error condition */ |
3475 | if (!boot) |
3476 | return 0; |
3477 | |
3478 | fd = open("/boot/grub/stage1", O_RDONLY); |
3479 | if (fd < 0) |
3480 | /* this doesn't exist if grub hasn't been installed */ |
3481 | return 0; |
3482 | |
3483 | if (read(fd, bootSect, 512) != 512) { |
3484 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3485 | "/boot/grub/stage1", strerror(errno)); |
3486 | close(fd); |
3487 | return 1; |
3488 | } |
3489 | close(fd); |
3490 | |
3491 | /* The more elaborate checks do not work on SuSE. The checks done |
3492 | * seem to be reasonble (at least for now), so just return success |
3493 | */ |
3494 | if (onSuse) |
3495 | return 2; |
3496 | |
3497 | return checkDeviceBootloader(boot, bootSect); |
3498 | } |
3499 | |
3500 | int checkForExtLinux(struct grubConfig * config) { |
3501 | int fd; |
3502 | unsigned char bootSect[512]; |
3503 | char * boot; |
3504 | char executable[] = "/boot/extlinux/extlinux"; |
3505 | |
3506 | printf("entered: checkForExtLinux()\n"); |
3507 | |
3508 | if (parseSysconfigGrub(NULL, &boot)) |
3509 | return 0; |
3510 | |
3511 | /* assume grub is not installed -- not an error condition */ |
3512 | if (!boot) |
3513 | return 0; |
3514 | |
3515 | fd = open(executable, O_RDONLY); |
3516 | if (fd < 0) |
3517 | /* this doesn't exist if grub hasn't been installed */ |
3518 | return 0; |
3519 | |
3520 | if (read(fd, bootSect, 512) != 512) { |
3521 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3522 | executable, strerror(errno)); |
3523 | return 1; |
3524 | } |
3525 | close(fd); |
3526 | |
3527 | return checkDeviceBootloader(boot, bootSect); |
3528 | } |
3529 | |
3530 | int checkForYaboot(struct grubConfig * config) { |
3531 | /* |
3532 | * This is a simplistic check that we consider good enough for own puporses |
3533 | * |
3534 | * If we were to properly check if yaboot is *installed* we'd need to: |
3535 | * 1) get the system boot device (LT_BOOT) |
3536 | * 2) considering it's a raw filesystem, check if the yaboot binary matches |
3537 | * the content on the boot device |
3538 | * 3) if not, copy the binary to a temporary file and run "addnote" on it |
3539 | * 4) check again if binary and boot device contents match |
3540 | */ |
3541 | if (!access("/etc/yaboot.conf", R_OK)) |
3542 | return 2; |
3543 | |
3544 | return 1; |
3545 | } |
3546 | |
3547 | int checkForElilo(struct grubConfig * config) { |
3548 | if (!access("/etc/elilo.conf", R_OK)) |
3549 | return 2; |
3550 | |
3551 | return 1; |
3552 | } |
3553 | |
3554 | static char * getRootSpecifier(char * str) { |
3555 | char * idx, * rootspec = NULL; |
3556 | |
3557 | if (*str == '(') { |
3558 | idx = rootspec = strdup(str); |
3559 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; |
3560 | *(++idx) = '\0'; |
3561 | } |
3562 | return rootspec; |
3563 | } |
3564 | |
3565 | static char * getInitrdVal(struct grubConfig * config, |
3566 | const char * prefix, struct singleLine *tmplLine, |
3567 | const char * newKernelInitrd, |
3568 | const char ** extraInitrds, int extraInitrdCount) |
3569 | { |
3570 | char *initrdVal, *end; |
3571 | int i; |
3572 | size_t totalSize; |
3573 | size_t prefixLen; |
3574 | char separatorChar; |
3575 | |
3576 | prefixLen = strlen(prefix); |
3577 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */; |
3578 | |
3579 | for (i = 0; i < extraInitrdCount; i++) { |
3580 | totalSize += sizeof(separatorChar); |
3581 | totalSize += strlen(extraInitrds[i]) - prefixLen; |
3582 | } |
3583 | |
3584 | initrdVal = end = malloc(totalSize); |
3585 | |
3586 | end = stpcpy (end, newKernelInitrd + prefixLen); |
3587 | |
3588 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; |
3589 | for (i = 0; i < extraInitrdCount; i++) { |
3590 | const char *extraInitrd; |
3591 | int j; |
3592 | |
3593 | extraInitrd = extraInitrds[i] + prefixLen; |
3594 | /* Don't add entries that are already there */ |
3595 | if (tmplLine != NULL) { |
3596 | for (j = 2; j < tmplLine->numElements; j++) |
3597 | if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0) |
3598 | break; |
3599 | |
3600 | if (j != tmplLine->numElements) |
3601 | continue; |
3602 | } |
3603 | |
3604 | *end++ = separatorChar; |
3605 | end = stpcpy(end, extraInitrd); |
3606 | } |
3607 | |
3608 | return initrdVal; |
3609 | } |
3610 | |
3611 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, |
3612 | const char * prefix, |
3613 | const char * newKernelPath, const char * newKernelTitle, |
3614 | const char * newKernelArgs, const char * newKernelInitrd, |
3615 | const char ** extraInitrds, int extraInitrdCount, |
3616 | const char * newMBKernel, const char * newMBKernelArgs) { |
3617 | struct singleEntry * new; |
3618 | struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL; |
3619 | int needs; |
3620 | char * chptr; |
3621 | |
3622 | if (!newKernelPath) return 0; |
3623 | |
3624 | /* if the newKernelTitle is too long silently munge it into something |
3625 | * we can live with. truncating is first check, then we'll just mess with |
3626 | * it until it looks better */ |
3627 | if (config->cfi->maxTitleLength && |
3628 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
3629 | char * buf = alloca(config->cfi->maxTitleLength + 7); |
3630 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); |
3631 | int i = 1; |
3632 | |
3633 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); |
3634 | while (findEntryByPath(config, buf, NULL, NULL)) { |
3635 | sprintf(numBuf, "%d", i++); |
3636 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
3637 | } |
3638 | |
3639 | newKernelTitle = buf + 6; |
3640 | } |
3641 | |
3642 | new = malloc(sizeof(*new)); |
3643 | new->skip = 0; |
3644 | new->multiboot = 0; |
3645 | new->next = config->entries; |
3646 | new->lines = NULL; |
3647 | config->entries = new; |
3648 | |
3649 | /* copy/update from the template */ |
3650 | needs = NEED_KERNEL | NEED_TITLE; |
3651 | if (newKernelInitrd) |
3652 | needs |= NEED_INITRD; |
3653 | if (newMBKernel) { |
3654 | needs |= NEED_MB; |
3655 | new->multiboot = 1; |
3656 | } |
3657 | |
3658 | if (template) { |
3659 | for (masterLine = template->lines; |
3660 | masterLine && (tmplLine = lineDup(masterLine)); |
3661 | lineFree(tmplLine), masterLine = masterLine->next) |
3662 | { |
3663 | dbgPrintf("addNewKernel processing %d\n", tmplLine->type); |
3664 | |
3665 | /* skip comments */ |
3666 | chptr = tmplLine->indent; |
3667 | while (*chptr && isspace(*chptr)) chptr++; |
3668 | if (*chptr == '#') continue; |
3669 | |
3670 | if (iskernel(tmplLine->type) && tmplLine->numElements >= 2) { |
3671 | if (!template->multiboot && (needs & NEED_MB)) { |
3672 | /* it's not a multiboot template and this is the kernel |
3673 | * line. Try to be intelligent about inserting the |
3674 | * hypervisor at the same time. |
3675 | */ |
3676 | if (config->cfi->mbHyperFirst) { |
3677 | /* insert the hypervisor first */ |
3678 | newLine = addLine(new, config->cfi, LT_HYPER, |
3679 | tmplLine->indent, |
3680 | newMBKernel + strlen(prefix)); |
3681 | /* set up for adding the kernel line */ |
3682 | free(tmplLine->indent); |
3683 | tmplLine->indent = strdup(config->secondaryIndent); |
3684 | needs &= ~NEED_MB; |
3685 | } |
3686 | if (needs & NEED_KERNEL) { |
3687 | /* use addLineTmpl to preserve line elements, |
3688 | * otherwise we could just call addLine. Unfortunately |
3689 | * this means making some changes to the template |
3690 | * such as the indent change above and the type |
3691 | * change below. |
3692 | */ |
3693 | struct keywordTypes * mbm_kw = |
3694 | getKeywordByType(LT_MBMODULE, config->cfi); |
3695 | if (mbm_kw) { |
3696 | tmplLine->type = LT_MBMODULE; |
3697 | free(tmplLine->elements[0].item); |
3698 | tmplLine->elements[0].item = strdup(mbm_kw->key); |
3699 | } |
3700 | newLine = addLineTmpl(new, tmplLine, newLine, |
3701 | newKernelPath + strlen(prefix), config->cfi); |
3702 | needs &= ~NEED_KERNEL; |
3703 | } |
3704 | if (needs & NEED_MB) { /* !mbHyperFirst */ |
3705 | newLine = addLine(new, config->cfi, LT_HYPER, |
3706 | config->secondaryIndent, |
3707 | newMBKernel + strlen(prefix)); |
3708 | needs &= ~NEED_MB; |
3709 | } |
3710 | } else if (needs & NEED_KERNEL) { |
3711 | newLine = addLineTmpl(new, tmplLine, newLine, |
3712 | newKernelPath + strlen(prefix), config->cfi); |
3713 | needs &= ~NEED_KERNEL; |
3714 | } |
3715 | |
3716 | } else if (tmplLine->type == LT_HYPER && |
3717 | tmplLine->numElements >= 2) { |
3718 | if (needs & NEED_MB) { |
3719 | newLine = addLineTmpl(new, tmplLine, newLine, |
3720 | newMBKernel + strlen(prefix), config->cfi); |
3721 | needs &= ~NEED_MB; |
3722 | } |
3723 | |
3724 | } else if (tmplLine->type == LT_MBMODULE && |
3725 | tmplLine->numElements >= 2) { |
3726 | if (new->multiboot) { |
3727 | if (needs & NEED_KERNEL) { |
3728 | newLine = addLineTmpl(new, tmplLine, newLine, |
3729 | newKernelPath + |
3730 | strlen(prefix), config->cfi); |
3731 | needs &= ~NEED_KERNEL; |
3732 | } else if (config->cfi->mbInitRdIsModule && |
3733 | (needs & NEED_INITRD)) { |
3734 | char *initrdVal; |
3735 | initrdVal = getInitrdVal(config, prefix, tmplLine, |
3736 | newKernelInitrd, extraInitrds, |
3737 | extraInitrdCount); |
3738 | newLine = addLineTmpl(new, tmplLine, newLine, |
3739 | initrdVal, config->cfi); |
3740 | free(initrdVal); |
3741 | needs &= ~NEED_INITRD; |
3742 | } |
3743 | } else if (needs & NEED_KERNEL) { |
3744 | /* template is multi but new is not, |
3745 | * insert the kernel in the first module slot |
3746 | */ |
3747 | tmplLine->type = preferredLineType(LT_KERNEL, config->cfi); |
3748 | free(tmplLine->elements[0].item); |
3749 | tmplLine->elements[0].item = |
3750 | strdup(getKeywordByType(tmplLine->type, |
3751 | config->cfi)->key); |
3752 | newLine = addLineTmpl(new, tmplLine, newLine, |
3753 | newKernelPath + strlen(prefix), |
3754 | config->cfi); |
3755 | needs &= ~NEED_KERNEL; |
3756 | } else if (needs & NEED_INITRD) { |
3757 | char *initrdVal; |
3758 | /* template is multi but new is not, |
3759 | * insert the initrd in the second module slot |
3760 | */ |
3761 | tmplLine->type = preferredLineType(LT_INITRD, config->cfi); |
3762 | free(tmplLine->elements[0].item); |
3763 | tmplLine->elements[0].item = |
3764 | strdup(getKeywordByType(tmplLine->type, |
3765 | config->cfi)->key); |
3766 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3767 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3768 | free(initrdVal); |
3769 | needs &= ~NEED_INITRD; |
3770 | } |
3771 | |
3772 | } else if (isinitrd(tmplLine->type) && tmplLine->numElements >= 2) { |
3773 | if (needs & NEED_INITRD && |
3774 | new->multiboot && !template->multiboot && |
3775 | config->cfi->mbInitRdIsModule) { |
3776 | /* make sure we don't insert the module initrd |
3777 | * before the module kernel... if we don't do it here, |
3778 | * it will be inserted following the template. |
3779 | */ |
3780 | if (!needs & NEED_KERNEL) { |
3781 | char *initrdVal; |
3782 | |
3783 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3784 | newLine = addLine(new, config->cfi, LT_MBMODULE, |
3785 | config->secondaryIndent, |
3786 | initrdVal); |
3787 | free(initrdVal); |
3788 | needs &= ~NEED_INITRD; |
3789 | } |
3790 | } else if (needs & NEED_INITRD) { |
3791 | char *initrdVal; |
3792 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3793 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3794 | free(initrdVal); |
3795 | needs &= ~NEED_INITRD; |
3796 | } |
3797 | |
3798 | } else if (tmplLine->type == LT_MENUENTRY && |
3799 | (needs & NEED_TITLE)) { |
3800 | requote(tmplLine, config->cfi); |
3801 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3802 | strcpy(nkt, "'"); |
3803 | strcat(nkt, newKernelTitle); |
3804 | strcat(nkt, "'"); |
3805 | newLine = addLineTmpl(new, tmplLine, newLine, nkt, config->cfi); |
3806 | free(nkt); |
3807 | needs &= ~NEED_TITLE; |
3808 | } else if (tmplLine->type == LT_TITLE && |
3809 | (needs & NEED_TITLE)) { |
3810 | if (tmplLine->numElements >= 2) { |
3811 | newLine = addLineTmpl(new, tmplLine, newLine, |
3812 | newKernelTitle, config->cfi); |
3813 | needs &= ~NEED_TITLE; |
3814 | } else if (tmplLine->numElements == 1 && |
3815 | config->cfi->titleBracketed) { |
3816 | /* addLineTmpl doesn't handle titleBracketed */ |
3817 | newLine = addLine(new, config->cfi, LT_TITLE, |
3818 | tmplLine->indent, newKernelTitle); |
3819 | needs &= ~NEED_TITLE; |
3820 | } |
3821 | } else if (tmplLine->type == LT_ECHO) { |
3822 | requote(tmplLine, config->cfi); |
3823 | static const char *prefix = "'Loading "; |
3824 | if (tmplLine->numElements > 1 && |
3825 | strstr(tmplLine->elements[1].item, prefix) && |
3826 | masterLine->next && |
3827 | iskernel(masterLine->next->type)) { |
3828 | char *newTitle = malloc(strlen(prefix) + |
3829 | strlen(newKernelTitle) + 2); |
3830 | |
3831 | strcpy(newTitle, prefix); |
3832 | strcat(newTitle, newKernelTitle); |
3833 | strcat(newTitle, "'"); |
3834 | newLine = addLine(new, config->cfi, LT_ECHO, |
3835 | tmplLine->indent, newTitle); |
3836 | free(newTitle); |
3837 | } else { |
3838 | /* pass through other lines from the template */ |
3839 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, |
3840 | config->cfi); |
3841 | } |
3842 | } else { |
3843 | /* pass through other lines from the template */ |
3844 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); |
3845 | } |
3846 | } |
3847 | |
3848 | } else { |
3849 | /* don't have a template, so start the entry with the |
3850 | * appropriate starting line |
3851 | */ |
3852 | switch (config->cfi->entryStart) { |
3853 | case LT_KERNEL: |
3854 | case LT_KERNEL_EFI: |
3855 | if (new->multiboot && config->cfi->mbHyperFirst) { |
3856 | /* fall through to LT_HYPER */ |
3857 | } else { |
3858 | newLine = addLine(new, config->cfi, |
3859 | preferredLineType(LT_KERNEL, config->cfi), |
3860 | config->primaryIndent, |
3861 | newKernelPath + strlen(prefix)); |
3862 | needs &= ~NEED_KERNEL; |
3863 | break; |
3864 | } |
3865 | |
3866 | case LT_HYPER: |
3867 | newLine = addLine(new, config->cfi, LT_HYPER, |
3868 | config->primaryIndent, |
3869 | newMBKernel + strlen(prefix)); |
3870 | needs &= ~NEED_MB; |
3871 | break; |
3872 | |
3873 | case LT_MENUENTRY: { |
3874 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3875 | strcpy(nkt, "'"); |
3876 | strcat(nkt, newKernelTitle); |
3877 | strcat(nkt, "'"); |
3878 | newLine = addLine(new, config->cfi, LT_MENUENTRY, |
3879 | config->primaryIndent, nkt); |
3880 | free(nkt); |
3881 | needs &= ~NEED_TITLE; |
3882 | needs |= NEED_END; |
3883 | break; |
3884 | } |
3885 | case LT_TITLE: |
3886 | if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above) |
3887 | char * templabel; |
3888 | int x = 0, y = 0; |
3889 | |
3890 | templabel = strdup(newKernelTitle); |
3891 | while( templabel[x]){ |
3892 | if( templabel[x] == ' ' ){ |
3893 | y = x; |
3894 | while( templabel[y] ){ |
3895 | templabel[y] = templabel[y+1]; |
3896 | y++; |
3897 | } |
3898 | } |
3899 | x++; |
3900 | } |
3901 | newLine = addLine(new, config->cfi, LT_TITLE, |
3902 | config->primaryIndent, templabel); |
3903 | free(templabel); |
3904 | }else{ |
3905 | newLine = addLine(new, config->cfi, LT_TITLE, |
3906 | config->primaryIndent, newKernelTitle); |
3907 | } |
3908 | needs &= ~NEED_TITLE; |
3909 | break; |
3910 | |
3911 | default: |
3912 | abort(); |
3913 | } |
3914 | } |
3915 | |
3916 | /* add the remainder of the lines, i.e. those that either |
3917 | * weren't present in the template, or in the case of no template, |
3918 | * all the lines following the entryStart. |
3919 | */ |
3920 | if (needs & NEED_TITLE) { |
3921 | newLine = addLine(new, config->cfi, LT_TITLE, |
3922 | config->secondaryIndent, |
3923 | newKernelTitle); |
3924 | needs &= ~NEED_TITLE; |
3925 | } |
3926 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
3927 | newLine = addLine(new, config->cfi, LT_HYPER, |
3928 | config->secondaryIndent, |
3929 | newMBKernel + strlen(prefix)); |
3930 | needs &= ~NEED_MB; |
3931 | } |
3932 | if (needs & NEED_KERNEL) { |
3933 | newLine = addLine(new, config->cfi, |
3934 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3935 | config->cfi)) |
3936 | ? LT_MBMODULE |
3937 | : preferredLineType(LT_KERNEL, config->cfi), |
3938 | config->secondaryIndent, |
3939 | newKernelPath + strlen(prefix)); |
3940 | needs &= ~NEED_KERNEL; |
3941 | } |
3942 | if (needs & NEED_MB) { |
3943 | newLine = addLine(new, config->cfi, LT_HYPER, |
3944 | config->secondaryIndent, |
3945 | newMBKernel + strlen(prefix)); |
3946 | needs &= ~NEED_MB; |
3947 | } |
3948 | if (needs & NEED_INITRD) { |
3949 | char *initrdVal; |
3950 | initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount); |
3951 | newLine = addLine(new, config->cfi, |
3952 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
3953 | config->cfi)) |
3954 | ? LT_MBMODULE |
3955 | : preferredLineType(LT_INITRD, config->cfi), |
3956 | config->secondaryIndent, |
3957 | initrdVal); |
3958 | free(initrdVal); |
3959 | needs &= ~NEED_INITRD; |
3960 | } |
3961 | if (needs & NEED_END) { |
3962 | newLine = addLine(new, config->cfi, LT_ENTRY_END, |
3963 | config->secondaryIndent, NULL); |
3964 | needs &= ~NEED_END; |
3965 | } |
3966 | |
3967 | if (needs) { |
3968 | printf(_("grubby: needs=%d, aborting\n"), needs); |
3969 | abort(); |
3970 | } |
3971 | |
3972 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, |
3973 | newMBKernelArgs, NULL)) return 1; |
3974 | |
3975 | return 0; |
3976 | } |
3977 | |
3978 | static void traceback(int signum) |
3979 | { |
3980 | void *array[40]; |
3981 | size_t size; |
3982 | |
3983 | signal(SIGSEGV, SIG_DFL); |
3984 | memset(array, '\0', sizeof (array)); |
3985 | size = backtrace(array, 40); |
3986 | |
3987 | fprintf(stderr, "grubby received SIGSEGV! Backtrace (%ld):\n", |
3988 | (unsigned long)size); |
3989 | backtrace_symbols_fd(array, size, STDERR_FILENO); |
3990 | exit(1); |
3991 | } |
3992 | |
3993 | int main(int argc, const char ** argv) { |
3994 | poptContext optCon; |
3995 | const char * grubConfig = NULL; |
3996 | char * outputFile = NULL; |
3997 | int arg = 0; |
3998 | int flags = 0; |
3999 | int badImageOkay = 0; |
4000 | int configureGrub2 = 0; |
4001 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
4002 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
4003 | int configureExtLinux = 0; |
4004 | int bootloaderProbe = 0; |
4005 | int extraInitrdCount = 0; |
4006 | char * updateKernelPath = NULL; |
4007 | char * newKernelPath = NULL; |
4008 | char * removeKernelPath = NULL; |
4009 | char * newKernelArgs = NULL; |
4010 | char * newKernelInitrd = NULL; |
4011 | char * newKernelTitle = NULL; |
4012 | char * newKernelVersion = NULL; |
4013 | char * newMBKernel = NULL; |
4014 | char * newMBKernelArgs = NULL; |
4015 | char * removeMBKernelArgs = NULL; |
4016 | char * removeMBKernel = NULL; |
4017 | char * bootPrefix = NULL; |
4018 | char * defaultKernel = NULL; |
4019 | char * removeArgs = NULL; |
4020 | char * kernelInfo = NULL; |
4021 | char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
4022 | char * envPath = NULL; |
4023 | const char * chptr = NULL; |
4024 | struct configFileInfo * cfi = NULL; |
4025 | struct grubConfig * config; |
4026 | struct singleEntry * template = NULL; |
4027 | int copyDefault = 0, makeDefault = 0; |
4028 | int displayDefault = 0; |
4029 | int displayDefaultIndex = 0; |
4030 | int displayDefaultTitle = 0; |
4031 | int defaultIndex = -1; |
4032 | struct poptOption options[] = { |
4033 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
4034 | _("add an entry for the specified kernel"), _("kernel-path") }, |
4035 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
4036 | _("add an entry for the specified multiboot kernel"), NULL }, |
4037 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
4038 | _("default arguments for the new kernel or new arguments for " |
4039 | "kernel being updated"), _("args") }, |
4040 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
4041 | _("default arguments for the new multiboot kernel or " |
4042 | "new arguments for multiboot kernel being updated"), NULL }, |
4043 | { "bad-image-okay", 0, 0, &badImageOkay, 0, |
4044 | _("don't sanity check images in boot entries (for testing only)"), |
4045 | NULL }, |
4046 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
4047 | _("filestystem which contains /boot directory (for testing only)"), |
4048 | _("bootfs") }, |
4049 | #if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__) |
4050 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
4051 | _("check which bootloader is installed on boot sector") }, |
4052 | #endif |
4053 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
4054 | _("path to grub config file to update (\"-\" for stdin)"), |
4055 | _("path") }, |
4056 | { "copy-default", 0, 0, ©Default, 0, |
4057 | _("use the default boot entry as a template for the new entry " |
4058 | "being added; if the default is not a linux image, or if " |
4059 | "the kernel referenced by the default image does not exist, " |
4060 | "the first linux entry whose kernel does exist is used as the " |
4061 | "template"), NULL }, |
4062 | { "debug", 0, 0, &debug, 0, |
4063 | _("print debugging information for failures") }, |
4064 | { "default-kernel", 0, 0, &displayDefault, 0, |
4065 | _("display the path of the default kernel") }, |
4066 | { "default-index", 0, 0, &displayDefaultIndex, 0, |
4067 | _("display the index of the default kernel") }, |
4068 | { "default-title", 0, 0, &displayDefaultTitle, 0, |
4069 | _("display the title of the default kernel") }, |
4070 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
4071 | _("configure elilo bootloader") }, |
4072 | { "efi", 0, POPT_ARG_NONE, &isEfi, 0, |
4073 | _("force grub2 stanzas to use efi") }, |
4074 | { "env", 0, POPT_ARG_STRING, &envPath, 0, |
4075 | _("path for environment data"), |
4076 | _("path") }, |
4077 | { "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
4078 | _("configure extlinux bootloader (from syslinux)") }, |
4079 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
4080 | _("configure grub bootloader") }, |
4081 | { "grub2", 0, POPT_ARG_NONE, &configureGrub2, 0, |
4082 | _("configure grub2 bootloader") }, |
4083 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
4084 | _("display boot information for specified kernel"), |
4085 | _("kernel-path") }, |
4086 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
4087 | _("initrd image for the new kernel"), _("initrd-path") }, |
4088 | { "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
4089 | _("auxiliary initrd image for things other than the new kernel"), _("initrd-path") }, |
4090 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
4091 | _("configure lilo bootloader") }, |
4092 | { "make-default", 0, 0, &makeDefault, 0, |
4093 | _("make the newly added entry the default boot entry"), NULL }, |
4094 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
4095 | _("path to output updated config file (\"-\" for stdout)"), |
4096 | _("path") }, |
4097 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
4098 | _("remove kernel arguments"), NULL }, |
4099 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
4100 | _("remove multiboot kernel arguments"), NULL }, |
4101 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
4102 | _("remove all entries for the specified kernel"), |
4103 | _("kernel-path") }, |
4104 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
4105 | _("remove all entries for the specified multiboot kernel"), NULL }, |
4106 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
4107 | _("make the first entry referencing the specified kernel " |
4108 | "the default"), _("kernel-path") }, |
4109 | { "set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0, |
4110 | _("make the given entry index the default entry"), |
4111 | _("entry-index") }, |
4112 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
4113 | _("configure silo bootloader") }, |
4114 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
4115 | _("title to use for the new kernel entry"), _("entry-title") }, |
4116 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
4117 | _("updated information for the specified kernel"), |
4118 | _("kernel-path") }, |
4119 | { "version", 'v', 0, NULL, 'v', |
4120 | _("print the version of this program and exit"), NULL }, |
4121 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
4122 | _("configure yaboot bootloader") }, |
4123 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
4124 | _("configure zipl bootloader") }, |
4125 | POPT_AUTOHELP |
4126 | { 0, 0, 0, 0, 0 } |
4127 | }; |
4128 | |
4129 | useextlinuxmenu=0; |
4130 | |
4131 | signal(SIGSEGV, traceback); |
4132 | |
4133 | int i = 0; |
4134 | for (int j = 1; j < argc; j++) |
4135 | i += strlen(argv[j]) + 1; |
4136 | saved_command_line = malloc(i); |
4137 | if (!saved_command_line) { |
4138 | fprintf(stderr, "grubby: %m\n"); |
4139 | exit(1); |
4140 | } |
4141 | saved_command_line[0] = '\0'; |
4142 | for (int j = 1; j < argc; j++) { |
4143 | strcat(saved_command_line, argv[j]); |
4144 | strncat(saved_command_line, j == argc -1 ? "" : " ", 1); |
4145 | } |
4146 | |
4147 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
4148 | poptReadDefaultConfig(optCon, 1); |
4149 | |
4150 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
4151 | switch (arg) { |
4152 | case 'v': |
4153 | printf("grubby version %s\n", VERSION); |
4154 | exit(0); |
4155 | break; |
4156 | case 'i': |
4157 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { |
4158 | extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon)); |
4159 | } else { |
4160 | fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount); |
4161 | return 1; |
4162 | } |
4163 | break; |
4164 | } |
4165 | } |
4166 | |
4167 | if (arg < -1) { |
4168 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
4169 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
4170 | poptStrerror(arg)); |
4171 | return 1; |
4172 | } |
4173 | |
4174 | if ((chptr = poptGetArg(optCon))) { |
4175 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
4176 | return 1; |
4177 | } |
4178 | |
4179 | if ((configureLilo + configureGrub2 + configureGrub + configureELilo + |
4180 | configureYaboot + configureSilo + configureZipl + |
4181 | configureExtLinux ) > 1) { |
4182 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); |
4183 | return 1; |
4184 | } else if (bootloaderProbe && grubConfig) { |
4185 | fprintf(stderr, |
4186 | _("grubby: cannot specify config file with --bootloader-probe\n")); |
4187 | return 1; |
4188 | } else if (configureGrub2) { |
4189 | cfi = &grub2ConfigType; |
4190 | if (envPath) |
4191 | cfi->envFile = envPath; |
4192 | } else if (configureLilo) { |
4193 | cfi = &liloConfigType; |
4194 | } else if (configureGrub) { |
4195 | cfi = &grubConfigType; |
4196 | } else if (configureELilo) { |
4197 | cfi = &eliloConfigType; |
4198 | } else if (configureYaboot) { |
4199 | cfi = &yabootConfigType; |
4200 | } else if (configureSilo) { |
4201 | cfi = &siloConfigType; |
4202 | } else if (configureZipl) { |
4203 | cfi = &ziplConfigType; |
4204 | } else if (configureExtLinux) { |
4205 | cfi = &extlinuxConfigType; |
4206 | useextlinuxmenu=1; |
4207 | } |
4208 | |
4209 | if (!cfi) { |
4210 | if (grub2FindConfig(&grub2ConfigType)) |
4211 | cfi = &grub2ConfigType; |
4212 | else |
4213 | #ifdef __ia64__ |
4214 | cfi = &eliloConfigType; |
4215 | #elif __powerpc__ |
4216 | cfi = &yabootConfigType; |
4217 | #elif __sparc__ |
4218 | cfi = &siloConfigType; |
4219 | #elif __s390__ |
4220 | cfi = &ziplConfigType; |
4221 | #elif __s390x__ |
4222 | cfi = &ziplConfigtype; |
4223 | #else |
4224 | cfi = &grubConfigType; |
4225 | #endif |
4226 | } |
4227 | |
4228 | if (!grubConfig) { |
4229 | if (cfi->findConfig) |
4230 | grubConfig = cfi->findConfig(cfi); |
4231 | if (!grubConfig) |
4232 | grubConfig = cfi->defaultConfig; |
4233 | } |
4234 | |
4235 | if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion || |
4236 | newKernelPath || removeKernelPath || makeDefault || |
4237 | defaultKernel || displayDefaultIndex || displayDefaultTitle || |
4238 | (defaultIndex >= 0))) { |
4239 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " |
4240 | "specified option")); |
4241 | return 1; |
4242 | } |
4243 | |
4244 | if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath || |
4245 | removeKernelPath)) { |
4246 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
4247 | "be used when adding or removing kernels\n")); |
4248 | return 1; |
4249 | } |
4250 | |
4251 | if (newKernelPath && !newKernelTitle) { |
4252 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
4253 | return 1; |
4254 | } else if (!newKernelPath && (newKernelTitle || copyDefault || |
4255 | (newKernelInitrd && !updateKernelPath)|| |
4256 | makeDefault || extraInitrdCount > 0)) { |
4257 | fprintf(stderr, _("grubby: kernel path expected\n")); |
4258 | return 1; |
4259 | } |
4260 | |
4261 | if (newKernelPath && updateKernelPath) { |
4262 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
4263 | "not be used together")); |
4264 | return 1; |
4265 | } |
4266 | |
4267 | if (makeDefault && defaultKernel) { |
4268 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
4269 | "may not be used together\n")); |
4270 | return 1; |
4271 | } else if (defaultKernel && removeKernelPath && |
4272 | !strcmp(defaultKernel, removeKernelPath)) { |
4273 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); |
4274 | return 1; |
4275 | } else if (defaultKernel && newKernelPath && |
4276 | !strcmp(defaultKernel, newKernelPath)) { |
4277 | makeDefault = 1; |
4278 | defaultKernel = NULL; |
4279 | } |
4280 | else if (defaultKernel && (defaultIndex >= 0)) { |
4281 | fprintf(stderr, _("grubby: --set-default and --set-default-index " |
4282 | "may not be used together\n")); |
4283 | return 1; |
4284 | } |
4285 | |
4286 | if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) { |
4287 | fprintf(stderr, _("grubby: output file must be specified if stdin " |
4288 | "is used\n")); |
4289 | return 1; |
4290 | } |
4291 | |
4292 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel |
4293 | && !kernelInfo && !bootloaderProbe && !updateKernelPath |
4294 | && !removeMBKernel && !displayDefaultIndex && !displayDefaultTitle |
4295 | && (defaultIndex == -1)) { |
4296 | fprintf(stderr, _("grubby: no action specified\n")); |
4297 | return 1; |
4298 | } |
4299 | |
4300 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
4301 | |
4302 | if (cfi->needsBootPrefix) { |
4303 | if (!bootPrefix) { |
4304 | bootPrefix = findBootPrefix(); |
4305 | if (!bootPrefix) return 1; |
4306 | } else { |
4307 | /* this shouldn't end with a / */ |
4308 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
4309 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
4310 | } |
4311 | } else { |
4312 | bootPrefix = ""; |
4313 | } |
4314 | |
4315 | if (!cfi->mbAllowExtraInitRds && |
4316 | extraInitrdCount > 0) { |
4317 | fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig); |
4318 | return 1; |
4319 | } |
4320 | |
4321 | if (bootloaderProbe) { |
4322 | int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0; |
4323 | struct grubConfig * lconfig, * gconfig, * yconfig, * econfig; |
4324 | |
4325 | const char *grub2config = grub2FindConfig(&grub2ConfigType); |
4326 | if (grub2config) { |
4327 | gconfig = readConfig(grub2config, &grub2ConfigType); |
4328 | if (!gconfig) |
4329 | gr2c = 1; |
4330 | else |
4331 | gr2c = checkForGrub2(gconfig); |
4332 | } |
4333 | |
4334 | const char *grubconfig = grubFindConfig(&grubConfigType); |
4335 | if (!access(grubconfig, F_OK)) { |
4336 | gconfig = readConfig(grubconfig, &grubConfigType); |
4337 | if (!gconfig) |
4338 | grc = 1; |
4339 | else |
4340 | grc = checkForGrub(gconfig); |
4341 | } |
4342 | |
4343 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
4344 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); |
4345 | if (!lconfig) |
4346 | lrc = 1; |
4347 | else |
4348 | lrc = checkForLilo(lconfig); |
4349 | } |
4350 | |
4351 | if (!access(eliloConfigType.defaultConfig, F_OK)) { |
4352 | econfig = readConfig(eliloConfigType.defaultConfig, |
4353 | &eliloConfigType); |
4354 | if (!econfig) |
4355 | erc = 1; |
4356 | else |
4357 | erc = checkForElilo(econfig); |
4358 | } |
4359 | |
4360 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
4361 | lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType); |
4362 | if (!lconfig) |
4363 | extrc = 1; |
4364 | else |
4365 | extrc = checkForExtLinux(lconfig); |
4366 | } |
4367 | |
4368 | |
4369 | if (!access(yabootConfigType.defaultConfig, F_OK)) { |
4370 | yconfig = readConfig(yabootConfigType.defaultConfig, |
4371 | &yabootConfigType); |
4372 | if (!yconfig) |
4373 | yrc = 1; |
4374 | else |
4375 | yrc = checkForYaboot(yconfig); |
4376 | } |
4377 | |
4378 | if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1 || |
4379 | erc == 1) |
4380 | return 1; |
4381 | |
4382 | if (lrc == 2) printf("lilo\n"); |
4383 | if (gr2c == 2) printf("grub2\n"); |
4384 | if (grc == 2) printf("grub\n"); |
4385 | if (extrc == 2) printf("extlinux\n"); |
4386 | if (yrc == 2) printf("yaboot\n"); |
4387 | if (erc == 2) printf("elilo\n"); |
4388 | |
4389 | return 0; |
4390 | } |
4391 | |
4392 | if (grubConfig == NULL) { |
4393 | printf("Could not find bootloader configuration file.\n"); |
4394 | exit(1); |
4395 | } |
4396 | |
4397 | config = readConfig(grubConfig, cfi); |
4398 | if (!config) return 1; |
4399 | |
4400 | if (displayDefault) { |
4401 | struct singleLine * line; |
4402 | struct singleEntry * entry; |
4403 | char * rootspec; |
4404 | |
4405 | if (config->defaultImage == -1) return 0; |
4406 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
4407 | cfi->defaultIsSaved) |
4408 | config->defaultImage = 0; |
4409 | entry = findEntryByIndex(config, config->defaultImage); |
4410 | if (!entry) return 0; |
4411 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; |
4412 | |
4413 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI, entry->lines); |
4414 | if (!line) return 0; |
4415 | |
4416 | rootspec = getRootSpecifier(line->elements[1].item); |
4417 | printf("%s%s\n", bootPrefix, line->elements[1].item + |
4418 | ((rootspec != NULL) ? strlen(rootspec) : 0)); |
4419 | |
4420 | return 0; |
4421 | |
4422 | } else if (displayDefaultTitle) { |
4423 | struct singleLine * line; |
4424 | struct singleEntry * entry; |
4425 | |
4426 | if (config->defaultImage == -1) return 0; |
4427 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
4428 | cfi->defaultIsSaved) |
4429 | config->defaultImage = 0; |
4430 | entry = findEntryByIndex(config, config->defaultImage); |
4431 | if (!entry) return 0; |
4432 | |
4433 | if (!configureGrub2) { |
4434 | line = getLineByType(LT_TITLE, entry->lines); |
4435 | if (!line) return 0; |
4436 | printf("%s\n", line->elements[1].item); |
4437 | |
4438 | } else { |
4439 | char * title; |
4440 | |
4441 | dbgPrintf("This is GRUB2, default title is embeded in menuentry\n"); |
4442 | line = getLineByType(LT_MENUENTRY, entry->lines); |
4443 | if (!line) return 0; |
4444 | title = grub2ExtractTitle(line); |
4445 | if (title) |
4446 | printf("%s\n", title); |
4447 | } |
4448 | return 0; |
4449 | |
4450 | } else if (displayDefaultIndex) { |
4451 | if (config->defaultImage == -1) return 0; |
4452 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
4453 | cfi->defaultIsSaved) |
4454 | config->defaultImage = 0; |
4455 | printf("%i\n", config->defaultImage); |
4456 | return 0; |
4457 | |
4458 | } else if (kernelInfo) |
4459 | return displayInfo(config, kernelInfo, bootPrefix); |
4460 | |
4461 | if (copyDefault) { |
4462 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
4463 | if (!template) return 1; |
4464 | } |
4465 | |
4466 | markRemovedImage(config, removeKernelPath, bootPrefix); |
4467 | markRemovedImage(config, removeMBKernel, bootPrefix); |
4468 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, |
4469 | bootPrefix, flags, defaultIndex); |
4470 | setFallbackImage(config, newKernelPath != NULL); |
4471 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
4472 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; |
4473 | if (updateKernelPath && newKernelInitrd) { |
4474 | if (updateInitrd(config, updateKernelPath, bootPrefix, |
4475 | newKernelInitrd)) return 1; |
4476 | } |
4477 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
4478 | newKernelTitle, newKernelArgs, newKernelInitrd, |
4479 | (const char **)extraInitrds, extraInitrdCount, |
4480 | newMBKernel, newMBKernelArgs)) return 1; |
4481 | |
4482 | |
4483 | if (numEntries(config) == 0) { |
4484 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " |
4485 | "Not writing out new config.\n")); |
4486 | return 1; |
4487 | } |
4488 | |
4489 | if (!outputFile) |
4490 | outputFile = (char *)grubConfig; |
4491 | |
4492 | return writeConfig(config, outputFile, bootPrefix); |
4493 | } |