Contents of /trunk/grubby/grubby.c
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Thu Jun 30 10:26:25 2016 UTC (8 years, 2 months ago) by niro
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File size: 131024 byte(s)
Thu Jun 30 10:26:25 2016 UTC (8 years, 2 months ago) by niro
File MIME type: text/plain
File size: 131024 byte(s)
Make the cases for 0cb78dab /actually work/, not just not crash.
1 | /* |
2 | * grubby.c |
3 | * |
4 | * Copyright (C) 2001-2008 Red Hat, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This program is free software; you can redistribute it and/or modify |
8 | * it under the terms of the GNU General Public License as published by |
9 | * the Free Software Foundation; either version 2 of the License, or |
10 | * (at your option) any later version. |
11 | * |
12 | * This program is distributed in the hope that it will be useful, |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * GNU General Public License for more details. |
16 | * |
17 | * You should have received a copy of the GNU General Public License |
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
19 | */ |
20 | |
21 | #ifndef _GNU_SOURCE |
22 | #define _GNU_SOURCE |
23 | #endif |
24 | #include <ctype.h> |
25 | #include <errno.h> |
26 | #include <fcntl.h> |
27 | #include <mntent.h> |
28 | #include <popt.h> |
29 | #include <stdarg.h> |
30 | #include <stdlib.h> |
31 | #include <string.h> |
32 | #include <sys/stat.h> |
33 | #include <unistd.h> |
34 | #include <libgen.h> |
35 | #include <execinfo.h> |
36 | #include <signal.h> |
37 | #include <blkid/blkid.h> |
38 | |
39 | #include "log.h" |
40 | |
41 | #ifndef DEBUG |
42 | #define DEBUG 0 |
43 | #endif |
44 | |
45 | #if DEBUG |
46 | #define dbgPrintf(format, args...) fprintf(stderr, format , ## args) |
47 | #else |
48 | #define dbgPrintf(format, args...) |
49 | #endif |
50 | |
51 | int debug = 0; /* Currently just for template debugging */ |
52 | |
53 | #define _(A) (A) |
54 | |
55 | #define MAX_EXTRA_INITRDS 16 /* code segment checked by --bootloader-probe */ |
56 | #define CODE_SEG_SIZE 128 /* code segment checked by --bootloader-probe */ |
57 | |
58 | #define NOOP_OPCODE 0x90 |
59 | #define JMP_SHORT_OPCODE 0xeb |
60 | |
61 | int isEfi = 0; |
62 | |
63 | #if defined(__aarch64__) |
64 | #define isEfiOnly 1 |
65 | #else |
66 | #define isEfiOnly 0 |
67 | #endif |
68 | |
69 | char *saved_command_line = NULL; |
70 | |
71 | /* comments get lumped in with indention */ |
72 | struct lineElement { |
73 | char * item; |
74 | char * indent; |
75 | }; |
76 | |
77 | enum lineType_e { |
78 | LT_WHITESPACE = 1 << 0, |
79 | LT_TITLE = 1 << 1, |
80 | LT_KERNEL = 1 << 2, |
81 | LT_INITRD = 1 << 3, |
82 | LT_HYPER = 1 << 4, |
83 | LT_DEFAULT = 1 << 5, |
84 | LT_MBMODULE = 1 << 6, |
85 | LT_ROOT = 1 << 7, |
86 | LT_FALLBACK = 1 << 8, |
87 | LT_KERNELARGS = 1 << 9, |
88 | LT_BOOT = 1 << 10, |
89 | LT_BOOTROOT = 1 << 11, |
90 | LT_LBA = 1 << 12, |
91 | LT_OTHER = 1 << 13, |
92 | LT_GENERIC = 1 << 14, |
93 | LT_ECHO = 1 << 16, |
94 | LT_MENUENTRY = 1 << 17, |
95 | LT_ENTRY_END = 1 << 18, |
96 | LT_SET_VARIABLE = 1 << 19, |
97 | LT_KERNEL_EFI = 1 << 20, |
98 | LT_INITRD_EFI = 1 << 21, |
99 | LT_KERNEL_16 = 1 << 22, |
100 | LT_INITRD_16 = 1 << 23, |
101 | LT_DEVTREE = 1 << 24, |
102 | LT_UNKNOWN = 1 << 25, |
103 | }; |
104 | |
105 | struct singleLine { |
106 | char * indent; |
107 | int numElements; |
108 | struct lineElement * elements; |
109 | struct singleLine * next; |
110 | enum lineType_e type; |
111 | }; |
112 | |
113 | struct singleEntry { |
114 | struct singleLine * lines; |
115 | int skip; |
116 | int multiboot; |
117 | struct singleEntry * next; |
118 | }; |
119 | |
120 | #define GRUBBY_BADIMAGE_OKAY (1 << 0) |
121 | |
122 | #define GRUB_CONFIG_NO_DEFAULT (1 << 0) /* don't write out default=0 */ |
123 | |
124 | /* These defines are (only) used in addNewKernel() */ |
125 | #define NEED_KERNEL (1 << 0) |
126 | #define NEED_INITRD (1 << 1) |
127 | #define NEED_TITLE (1 << 2) |
128 | #define NEED_ARGS (1 << 3) |
129 | #define NEED_MB (1 << 4) |
130 | #define NEED_END (1 << 5) |
131 | #define NEED_DEVTREE (1 << 6) |
132 | |
133 | #define MAIN_DEFAULT (1 << 0) |
134 | #define DEFAULT_SAVED -2 |
135 | #define DEFAULT_SAVED_GRUB2 -3 |
136 | |
137 | struct keywordTypes { |
138 | char * key; |
139 | enum lineType_e type; |
140 | char nextChar; |
141 | char separatorChar; |
142 | }; |
143 | |
144 | struct configFileInfo; |
145 | |
146 | typedef const char *(*findConfigFunc)(struct configFileInfo *); |
147 | typedef const int (*writeLineFunc)(struct configFileInfo *, |
148 | struct singleLine *line); |
149 | typedef char *(*getEnvFunc)(struct configFileInfo *, char *name); |
150 | typedef int (*setEnvFunc)(struct configFileInfo *, char *name, char *value); |
151 | |
152 | struct configFileInfo { |
153 | char * defaultConfig; |
154 | findConfigFunc findConfig; |
155 | writeLineFunc writeLine; |
156 | getEnvFunc getEnv; |
157 | setEnvFunc setEnv; |
158 | struct keywordTypes * keywords; |
159 | int caseInsensitive; |
160 | int defaultIsIndex; |
161 | int defaultIsVariable; |
162 | int defaultSupportSaved; |
163 | int defaultIsSaved; |
164 | int defaultIsUnquoted; |
165 | enum lineType_e entryStart; |
166 | enum lineType_e entryEnd; |
167 | int needsBootPrefix; |
168 | int argsInQuotes; |
169 | int maxTitleLength; |
170 | int titleBracketed; |
171 | int titlePosition; |
172 | int mbHyperFirst; |
173 | int mbInitRdIsModule; |
174 | int mbConcatArgs; |
175 | int mbAllowExtraInitRds; |
176 | char *envFile; |
177 | }; |
178 | |
179 | struct keywordTypes grubKeywords[] = { |
180 | { "title", LT_TITLE, ' ' }, |
181 | { "root", LT_BOOTROOT, ' ' }, |
182 | { "default", LT_DEFAULT, ' ' }, |
183 | { "fallback", LT_FALLBACK, ' ' }, |
184 | { "kernel", LT_KERNEL, ' ' }, |
185 | { "initrd", LT_INITRD, ' ', ' ' }, |
186 | { "module", LT_MBMODULE, ' ' }, |
187 | { "kernel", LT_HYPER, ' ' }, |
188 | { NULL, 0, 0 }, |
189 | }; |
190 | |
191 | const char *grubFindConfig(struct configFileInfo *cfi) { |
192 | static const char *configFiles[] = { |
193 | "/boot/grub/grub.conf", |
194 | "/boot/grub/menu.lst", |
195 | "/etc/grub.conf", |
196 | "/boot/grub2/grub.cfg", |
197 | "/boot/grub2-efi/grub.cfg", |
198 | NULL |
199 | }; |
200 | static int i = -1; |
201 | |
202 | if (i == -1) { |
203 | for (i = 0; configFiles[i] != NULL; i++) { |
204 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
205 | if (!access(configFiles[i], R_OK)) { |
206 | dbgPrintf("found\n"); |
207 | return configFiles[i]; |
208 | } |
209 | dbgPrintf("not found\n"); |
210 | } |
211 | } |
212 | return configFiles[i]; |
213 | } |
214 | |
215 | struct configFileInfo grubConfigType = { |
216 | .findConfig = grubFindConfig, |
217 | .keywords = grubKeywords, |
218 | .defaultIsIndex = 1, |
219 | .defaultSupportSaved = 1, |
220 | .entryStart = LT_TITLE, |
221 | .needsBootPrefix = 1, |
222 | .mbHyperFirst = 1, |
223 | .mbInitRdIsModule = 1, |
224 | .mbAllowExtraInitRds = 1, |
225 | .titlePosition = 1, |
226 | }; |
227 | |
228 | struct keywordTypes grub2Keywords[] = { |
229 | { "menuentry", LT_MENUENTRY, ' ' }, |
230 | { "}", LT_ENTRY_END, ' ' }, |
231 | { "echo", LT_ECHO, ' ' }, |
232 | { "set", LT_SET_VARIABLE,' ', '=' }, |
233 | { "root", LT_BOOTROOT, ' ' }, |
234 | { "default", LT_DEFAULT, ' ' }, |
235 | { "fallback", LT_FALLBACK, ' ' }, |
236 | { "linux", LT_KERNEL, ' ' }, |
237 | { "linuxefi", LT_KERNEL_EFI, ' ' }, |
238 | { "linux16", LT_KERNEL_16, ' ' }, |
239 | { "initrd", LT_INITRD, ' ', ' ' }, |
240 | { "initrdefi", LT_INITRD_EFI, ' ', ' ' }, |
241 | { "initrd16", LT_INITRD_16, ' ', ' ' }, |
242 | { "module", LT_MBMODULE, ' ' }, |
243 | { "kernel", LT_HYPER, ' ' }, |
244 | { "devicetree", LT_DEVTREE, ' ' }, |
245 | { NULL, 0, 0 }, |
246 | }; |
247 | |
248 | const char *grub2FindConfig(struct configFileInfo *cfi) { |
249 | static const char *configFiles[] = { |
250 | "/boot/grub/grub-efi.cfg", |
251 | "/boot/grub/grub.cfg", |
252 | NULL |
253 | }; |
254 | static int i = -1; |
255 | static const char *grub_cfg = "/boot/grub/grub.cfg"; |
256 | int rc = -1; |
257 | |
258 | if (i == -1) { |
259 | for (i = 0; configFiles[i] != NULL; i++) { |
260 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
261 | if ((rc = access(configFiles[i], R_OK))) { |
262 | if (errno == EACCES) { |
263 | printf("Unable to access bootloader configuration file " |
264 | "\"%s\": %m\n", configFiles[i]); |
265 | exit(1); |
266 | } |
267 | continue; |
268 | } else { |
269 | dbgPrintf("found\n"); |
270 | return configFiles[i]; |
271 | } |
272 | } |
273 | } |
274 | |
275 | /* Ubuntu renames grub2 to grub, so check for the grub.d directory |
276 | * that isn't in grub1, and if it exists, return the config file path |
277 | * that they use. */ |
278 | if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) { |
279 | dbgPrintf("found\n"); |
280 | return grub_cfg; |
281 | } |
282 | |
283 | dbgPrintf("not found\n"); |
284 | return configFiles[i]; |
285 | } |
286 | |
287 | /* kind of hacky. It'll give the first 1024 bytes, ish. */ |
288 | static char *grub2GetEnv(struct configFileInfo *info, char *name) |
289 | { |
290 | static char buf[1025]; |
291 | char *s = NULL; |
292 | char *ret = NULL; |
293 | char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv"; |
294 | int rc = asprintf(&s, "grub-editenv %s list | grep '^%s='", envFile, name); |
295 | |
296 | if (rc < 0) |
297 | return NULL; |
298 | |
299 | FILE *f = popen(s, "r"); |
300 | if (!f) |
301 | goto out; |
302 | |
303 | memset(buf, '\0', sizeof (buf)); |
304 | ret = fgets(buf, 1024, f); |
305 | pclose(f); |
306 | |
307 | if (ret) { |
308 | ret += strlen(name) + 1; |
309 | ret[strlen(ret) - 1] = '\0'; |
310 | } |
311 | dbgPrintf("grub2GetEnv(%s): %s\n", name, ret); |
312 | out: |
313 | free(s); |
314 | return ret; |
315 | } |
316 | |
317 | static int sPopCount(const char *s, const char *c) |
318 | { |
319 | int ret = 0; |
320 | if (!s) |
321 | return -1; |
322 | for (int i = 0; s[i] != '\0'; i++) |
323 | for (int j = 0; c[j] != '\0'; j++) |
324 | if (s[i] == c[j]) |
325 | ret++; |
326 | return ret; |
327 | } |
328 | |
329 | static char *shellEscape(const char *s) |
330 | { |
331 | int l = strlen(s) + sPopCount(s, "'") * 2; |
332 | |
333 | char *ret = calloc(l+1, sizeof (*ret)); |
334 | if (!ret) |
335 | return NULL; |
336 | for (int i = 0, j = 0; s[i] != '\0'; i++, j++) { |
337 | if (s[i] == '\'') |
338 | ret[j++] = '\\'; |
339 | ret[j] = s[i]; |
340 | } |
341 | return ret; |
342 | } |
343 | |
344 | static void unquote(char *s) |
345 | { |
346 | int l = strlen(s); |
347 | |
348 | if ((s[l-1] == '\'' && s[0] == '\'') || (s[l-1] == '"' && s[0] == '"')) { |
349 | memmove(s, s+1, l-2); |
350 | s[l-2] = '\0'; |
351 | } |
352 | } |
353 | |
354 | static int grub2SetEnv(struct configFileInfo *info, char *name, char *value) |
355 | { |
356 | char *s = NULL; |
357 | int rc = 0; |
358 | char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv"; |
359 | |
360 | unquote(value); |
361 | value = shellEscape(value); |
362 | if (!value) |
363 | return -1; |
364 | |
365 | rc = asprintf(&s, "grub-editenv %s set '%s=%s'", envFile, name, value); |
366 | free(value); |
367 | if (rc <0) |
368 | return -1; |
369 | |
370 | dbgPrintf("grub2SetEnv(%s): %s\n", name, s); |
371 | rc = system(s); |
372 | free(s); |
373 | return rc; |
374 | } |
375 | |
376 | /* this is a gigantic hack to avoid clobbering grub2 variables... */ |
377 | static int is_special_grub2_variable(const char *name) |
378 | { |
379 | if (!strcmp(name,"\"${next_entry}\"")) |
380 | return 1; |
381 | if (!strcmp(name,"\"${prev_saved_entry}\"")) |
382 | return 1; |
383 | return 0; |
384 | } |
385 | |
386 | int sizeOfSingleLine(struct singleLine * line) { |
387 | int count = 0; |
388 | |
389 | for (int i = 0; i < line->numElements; i++) { |
390 | int indentSize = 0; |
391 | |
392 | count = count + strlen(line->elements[i].item); |
393 | |
394 | indentSize = strlen(line->elements[i].indent); |
395 | if (indentSize > 0) |
396 | count = count + indentSize; |
397 | else |
398 | /* be extra safe and add room for whitespaces */ |
399 | count = count + 1; |
400 | } |
401 | |
402 | /* room for trailing terminator */ |
403 | count = count + 1; |
404 | |
405 | return count; |
406 | } |
407 | |
408 | static int isquote(char q) |
409 | { |
410 | if (q == '\'' || q == '\"') |
411 | return 1; |
412 | return 0; |
413 | } |
414 | |
415 | static int iskernel(enum lineType_e type) { |
416 | return (type == LT_KERNEL || type == LT_KERNEL_EFI || type == LT_KERNEL_16); |
417 | } |
418 | |
419 | static int isinitrd(enum lineType_e type) { |
420 | return (type == LT_INITRD || type == LT_INITRD_EFI || type == LT_INITRD_16); |
421 | } |
422 | |
423 | char *grub2ExtractTitle(struct singleLine * line) { |
424 | char * current; |
425 | char * current_indent; |
426 | int current_len; |
427 | int current_indent_len; |
428 | int i; |
429 | |
430 | /* bail out if line does not start with menuentry */ |
431 | if (strcmp(line->elements[0].item, "menuentry")) |
432 | return NULL; |
433 | |
434 | i = 1; |
435 | current = line->elements[i].item; |
436 | current_len = strlen(current); |
437 | |
438 | /* if second word is quoted, strip the quotes and return single word */ |
439 | if (isquote(*current) && isquote(current[current_len - 1])) { |
440 | char *tmp; |
441 | |
442 | tmp = strdup(current); |
443 | *(tmp + current_len - 1) = '\0'; |
444 | return ++tmp; |
445 | } |
446 | |
447 | /* if no quotes, return second word verbatim */ |
448 | if (!isquote(*current)) |
449 | return current; |
450 | |
451 | /* second element start with a quote, so we have to find the element |
452 | * whose last character is also quote (assuming it's the closing one) */ |
453 | int resultMaxSize; |
454 | char * result; |
455 | |
456 | resultMaxSize = sizeOfSingleLine(line); |
457 | result = malloc(resultMaxSize); |
458 | snprintf(result, resultMaxSize, "%s", ++current); |
459 | |
460 | i++; |
461 | for (; i < line->numElements; ++i) { |
462 | current = line->elements[i].item; |
463 | current_len = strlen(current); |
464 | current_indent = line->elements[i].indent; |
465 | current_indent_len = strlen(current_indent); |
466 | |
467 | strncat(result, current_indent, current_indent_len); |
468 | if (!isquote(current[current_len-1])) { |
469 | strncat(result, current, current_len); |
470 | } else { |
471 | strncat(result, current, current_len - 1); |
472 | break; |
473 | } |
474 | } |
475 | return result; |
476 | } |
477 | |
478 | struct configFileInfo grub2ConfigType = { |
479 | .findConfig = grub2FindConfig, |
480 | .getEnv = grub2GetEnv, |
481 | .setEnv = grub2SetEnv, |
482 | .keywords = grub2Keywords, |
483 | .defaultIsIndex = 1, |
484 | .defaultSupportSaved = 1, |
485 | .defaultIsVariable = 1, |
486 | .entryStart = LT_MENUENTRY, |
487 | .entryEnd = LT_ENTRY_END, |
488 | .titlePosition = 1, |
489 | .needsBootPrefix = 1, |
490 | .mbHyperFirst = 1, |
491 | .mbInitRdIsModule = 1, |
492 | .mbAllowExtraInitRds = 1, |
493 | }; |
494 | |
495 | struct keywordTypes yabootKeywords[] = { |
496 | { "label", LT_TITLE, '=' }, |
497 | { "root", LT_ROOT, '=' }, |
498 | { "default", LT_DEFAULT, '=' }, |
499 | { "image", LT_KERNEL, '=' }, |
500 | { "bsd", LT_GENERIC, '=' }, |
501 | { "macos", LT_GENERIC, '=' }, |
502 | { "macosx", LT_GENERIC, '=' }, |
503 | { "magicboot", LT_GENERIC, '=' }, |
504 | { "darwin", LT_GENERIC, '=' }, |
505 | { "timeout", LT_GENERIC, '=' }, |
506 | { "install", LT_GENERIC, '=' }, |
507 | { "fstype", LT_GENERIC, '=' }, |
508 | { "hfstype", LT_GENERIC, '=' }, |
509 | { "delay", LT_GENERIC, '=' }, |
510 | { "defaultos", LT_GENERIC, '=' }, |
511 | { "init-message", LT_GENERIC, '=' }, |
512 | { "enablecdboot", LT_GENERIC, ' ' }, |
513 | { "enableofboot", LT_GENERIC, ' ' }, |
514 | { "enablenetboot", LT_GENERIC, ' ' }, |
515 | { "nonvram", LT_GENERIC, ' ' }, |
516 | { "hide", LT_GENERIC, ' ' }, |
517 | { "protect", LT_GENERIC, ' ' }, |
518 | { "nobless", LT_GENERIC, ' ' }, |
519 | { "nonvram", LT_GENERIC, ' ' }, |
520 | { "brokenosx", LT_GENERIC, ' ' }, |
521 | { "usemount", LT_GENERIC, ' ' }, |
522 | { "mntpoint", LT_GENERIC, '=' }, |
523 | { "partition", LT_GENERIC, '=' }, |
524 | { "device", LT_GENERIC, '=' }, |
525 | { "fstype", LT_GENERIC, '=' }, |
526 | { "initrd", LT_INITRD, '=', ';' }, |
527 | { "append", LT_KERNELARGS, '=' }, |
528 | { "boot", LT_BOOT, '=' }, |
529 | { "lba", LT_LBA, ' ' }, |
530 | { NULL, 0, 0 }, |
531 | }; |
532 | |
533 | struct keywordTypes liloKeywords[] = { |
534 | { "label", LT_TITLE, '=' }, |
535 | { "root", LT_ROOT, '=' }, |
536 | { "default", LT_DEFAULT, '=' }, |
537 | { "image", LT_KERNEL, '=' }, |
538 | { "other", LT_OTHER, '=' }, |
539 | { "initrd", LT_INITRD, '=' }, |
540 | { "append", LT_KERNELARGS, '=' }, |
541 | { "boot", LT_BOOT, '=' }, |
542 | { "lba", LT_LBA, ' ' }, |
543 | { NULL, 0, 0 }, |
544 | }; |
545 | |
546 | struct keywordTypes eliloKeywords[] = { |
547 | { "label", LT_TITLE, '=' }, |
548 | { "root", LT_ROOT, '=' }, |
549 | { "default", LT_DEFAULT, '=' }, |
550 | { "image", LT_KERNEL, '=' }, |
551 | { "initrd", LT_INITRD, '=' }, |
552 | { "append", LT_KERNELARGS, '=' }, |
553 | { "vmm", LT_HYPER, '=' }, |
554 | { NULL, 0, 0 }, |
555 | }; |
556 | |
557 | struct keywordTypes siloKeywords[] = { |
558 | { "label", LT_TITLE, '=' }, |
559 | { "root", LT_ROOT, '=' }, |
560 | { "default", LT_DEFAULT, '=' }, |
561 | { "image", LT_KERNEL, '=' }, |
562 | { "other", LT_OTHER, '=' }, |
563 | { "initrd", LT_INITRD, '=' }, |
564 | { "append", LT_KERNELARGS, '=' }, |
565 | { "boot", LT_BOOT, '=' }, |
566 | { NULL, 0, 0 }, |
567 | }; |
568 | |
569 | struct keywordTypes ziplKeywords[] = { |
570 | { "target", LT_BOOTROOT, '=' }, |
571 | { "image", LT_KERNEL, '=' }, |
572 | { "ramdisk", LT_INITRD, '=' }, |
573 | { "parameters", LT_KERNELARGS, '=' }, |
574 | { "default", LT_DEFAULT, '=' }, |
575 | { NULL, 0, 0 }, |
576 | }; |
577 | |
578 | struct keywordTypes extlinuxKeywords[] = { |
579 | { "label", LT_TITLE, ' ' }, |
580 | { "root", LT_ROOT, ' ' }, |
581 | { "default", LT_DEFAULT, ' ' }, |
582 | { "kernel", LT_KERNEL, ' ' }, |
583 | { "initrd", LT_INITRD, ' ', ',' }, |
584 | { "append", LT_KERNELARGS, ' ' }, |
585 | { "prompt", LT_UNKNOWN, ' ' }, |
586 | { "fdt", LT_DEVTREE, ' ' }, |
587 | { "fdtdir", LT_DEVTREE, ' ' }, |
588 | { NULL, 0, 0 }, |
589 | }; |
590 | int useextlinuxmenu; |
591 | struct configFileInfo eliloConfigType = { |
592 | .defaultConfig = "/boot/efi/EFI/redhat/elilo.conf", |
593 | .keywords = eliloKeywords, |
594 | .entryStart = LT_KERNEL, |
595 | .needsBootPrefix = 1, |
596 | .argsInQuotes = 1, |
597 | .mbConcatArgs = 1, |
598 | .titlePosition = 1, |
599 | }; |
600 | |
601 | struct configFileInfo liloConfigType = { |
602 | .defaultConfig = "/etc/lilo.conf", |
603 | .keywords = liloKeywords, |
604 | .entryStart = LT_KERNEL, |
605 | .argsInQuotes = 1, |
606 | .maxTitleLength = 15, |
607 | .titlePosition = 1, |
608 | }; |
609 | |
610 | struct configFileInfo yabootConfigType = { |
611 | .defaultConfig = "/etc/yaboot.conf", |
612 | .keywords = yabootKeywords, |
613 | .entryStart = LT_KERNEL, |
614 | .needsBootPrefix = 1, |
615 | .argsInQuotes = 1, |
616 | .maxTitleLength = 15, |
617 | .mbAllowExtraInitRds = 1, |
618 | .titlePosition = 1, |
619 | }; |
620 | |
621 | struct configFileInfo siloConfigType = { |
622 | .defaultConfig = "/etc/silo.conf", |
623 | .keywords = siloKeywords, |
624 | .entryStart = LT_KERNEL, |
625 | .needsBootPrefix = 1, |
626 | .argsInQuotes = 1, |
627 | .maxTitleLength = 15, |
628 | .titlePosition = 1, |
629 | }; |
630 | |
631 | struct configFileInfo ziplConfigType = { |
632 | .defaultConfig = "/etc/zipl.conf", |
633 | .keywords = ziplKeywords, |
634 | .entryStart = LT_TITLE, |
635 | .argsInQuotes = 1, |
636 | .titleBracketed = 1, |
637 | }; |
638 | |
639 | struct configFileInfo extlinuxConfigType = { |
640 | .defaultConfig = "/boot/extlinux/extlinux.conf", |
641 | .keywords = extlinuxKeywords, |
642 | .caseInsensitive = 1, |
643 | .entryStart = LT_TITLE, |
644 | .needsBootPrefix = 1, |
645 | .maxTitleLength = 255, |
646 | .mbAllowExtraInitRds = 1, |
647 | .defaultIsUnquoted = 1, |
648 | .titlePosition = 1, |
649 | }; |
650 | |
651 | struct grubConfig { |
652 | struct singleLine * theLines; |
653 | struct singleEntry * entries; |
654 | char * primaryIndent; |
655 | char * secondaryIndent; |
656 | int defaultImage; /* -1 if none specified -- this value is |
657 | * written out, overriding original */ |
658 | int fallbackImage; /* just like defaultImage */ |
659 | int flags; |
660 | struct configFileInfo * cfi; |
661 | }; |
662 | |
663 | blkid_cache blkid; |
664 | |
665 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); |
666 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, |
667 | const char * path, const char * prefix, |
668 | int * index); |
669 | struct singleEntry * findEntryByTitle(struct grubConfig * cfg, char *title, |
670 | int * index); |
671 | static int readFile(int fd, char ** bufPtr); |
672 | static void lineInit(struct singleLine * line); |
673 | struct singleLine * lineDup(struct singleLine * line); |
674 | static void lineFree(struct singleLine * line); |
675 | static int lineWrite(FILE * out, struct singleLine * line, |
676 | struct configFileInfo * cfi); |
677 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
678 | struct configFileInfo * cfi); |
679 | static char * getRootSpecifier(char * str); |
680 | static void requote(struct singleLine *line, struct configFileInfo * cfi); |
681 | static void insertElement(struct singleLine * line, |
682 | const char * item, int insertHere, |
683 | struct configFileInfo * cfi); |
684 | static void removeElement(struct singleLine * line, int removeHere); |
685 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
686 | struct configFileInfo * cfi); |
687 | static enum lineType_e getTypeByKeyword(char * keyword, |
688 | struct configFileInfo * cfi); |
689 | static struct singleLine * getLineByType(enum lineType_e type, |
690 | struct singleLine * line); |
691 | static int checkForExtLinux(struct grubConfig * config); |
692 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
693 | struct singleLine * tmplLine, |
694 | struct singleLine * prevLine, |
695 | const char * val, |
696 | struct configFileInfo * cfi); |
697 | struct singleLine * addLine(struct singleEntry * entry, |
698 | struct configFileInfo * cfi, |
699 | enum lineType_e type, char * defaultIndent, |
700 | const char * val); |
701 | |
702 | static char * sdupprintf(const char *format, ...) |
703 | #ifdef __GNUC__ |
704 | __attribute__ ((format (printf, 1, 2))); |
705 | #else |
706 | ; |
707 | #endif |
708 | |
709 | static char * sdupprintf(const char *format, ...) { |
710 | char *buf = NULL; |
711 | char c; |
712 | va_list args; |
713 | size_t size = 0; |
714 | va_start(args, format); |
715 | |
716 | /* XXX requires C99 vsnprintf behavior */ |
717 | size = vsnprintf(&c, 1, format, args) + 1; |
718 | if (size == -1) { |
719 | printf("ERROR: vsnprintf behavior is not C99\n"); |
720 | abort(); |
721 | } |
722 | |
723 | va_end(args); |
724 | va_start(args, format); |
725 | |
726 | buf = malloc(size); |
727 | if (buf == NULL) |
728 | return NULL; |
729 | vsnprintf(buf, size, format, args); |
730 | va_end (args); |
731 | |
732 | return buf; |
733 | } |
734 | |
735 | static enum lineType_e preferredLineType(enum lineType_e type, |
736 | struct configFileInfo *cfi) { |
737 | if (isEfi && cfi == &grub2ConfigType) { |
738 | switch (type) { |
739 | case LT_KERNEL: |
740 | return isEfiOnly ? LT_KERNEL : LT_KERNEL_EFI; |
741 | case LT_INITRD: |
742 | return isEfiOnly ? LT_INITRD : LT_INITRD_EFI; |
743 | default: |
744 | return type; |
745 | } |
746 | #if defined(__i386__) || defined(__x86_64__) |
747 | } else if (cfi == &grub2ConfigType) { |
748 | switch (type) { |
749 | case LT_KERNEL: |
750 | return LT_KERNEL_16; |
751 | case LT_INITRD: |
752 | return LT_INITRD_16; |
753 | default: |
754 | return type; |
755 | } |
756 | #endif |
757 | } |
758 | return type; |
759 | } |
760 | |
761 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
762 | struct configFileInfo * cfi) { |
763 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
764 | if (kw->type == type) |
765 | return kw; |
766 | } |
767 | return NULL; |
768 | } |
769 | |
770 | static char *getKeyByType(enum lineType_e type, struct configFileInfo * cfi) { |
771 | struct keywordTypes *kt = getKeywordByType(type, cfi); |
772 | if (kt) |
773 | return kt->key; |
774 | return "unknown"; |
775 | } |
776 | |
777 | static char * getpathbyspec(char *device) { |
778 | if (!blkid) |
779 | blkid_get_cache(&blkid, NULL); |
780 | |
781 | return blkid_get_devname(blkid, device, NULL); |
782 | } |
783 | |
784 | static char * getuuidbydev(char *device) { |
785 | if (!blkid) |
786 | blkid_get_cache(&blkid, NULL); |
787 | |
788 | return blkid_get_tag_value(blkid, "UUID", device); |
789 | } |
790 | |
791 | static enum lineType_e getTypeByKeyword(char * keyword, |
792 | struct configFileInfo * cfi) { |
793 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
794 | if (cfi->caseInsensitive) { |
795 | if (!strcasecmp(keyword, kw->key)) |
796 | return kw->type; |
797 | } else { |
798 | if (!strcmp(keyword, kw->key)) |
799 | return kw->type; |
800 | } |
801 | } |
802 | return LT_UNKNOWN; |
803 | } |
804 | |
805 | static struct singleLine * getLineByType(enum lineType_e type, |
806 | struct singleLine * line) { |
807 | dbgPrintf("getLineByType(%d): ", type); |
808 | for (; line; line = line->next) { |
809 | dbgPrintf("%d:%s ", line->type, |
810 | line->numElements ? line->elements[0].item : "(empty)"); |
811 | if (line->type & type) break; |
812 | } |
813 | dbgPrintf(line ? "\n" : " (failed)\n"); |
814 | return line; |
815 | } |
816 | |
817 | static int isBracketedTitle(struct singleLine * line) { |
818 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
819 | int len = strlen(line->elements[0].item); |
820 | if (*(line->elements[0].item + len - 1) == ']') { |
821 | /* FIXME: this is a hack... */ |
822 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
823 | return 1; |
824 | } |
825 | } |
826 | } |
827 | return 0; |
828 | } |
829 | |
830 | static int isEntryStart(struct singleLine * line, |
831 | struct configFileInfo * cfi) { |
832 | return line->type == cfi->entryStart || line->type == LT_OTHER || |
833 | (cfi->titleBracketed && isBracketedTitle(line)); |
834 | } |
835 | |
836 | /* extract the title from within brackets (for zipl) */ |
837 | static char * extractTitle(struct grubConfig *cfg, struct singleLine * line) { |
838 | /* bracketed title... let's extract it */ |
839 | char * title = NULL; |
840 | if (cfg->cfi == &grub2ConfigType) |
841 | return grub2ExtractTitle(line); |
842 | if (line->type == LT_TITLE) { |
843 | char *tmp = line->elements[cfg->cfi->titlePosition].item; |
844 | if (cfg->cfi->titleBracketed) { |
845 | tmp++; |
846 | title = strdup(tmp); |
847 | *(title + strlen(title) - 1) = '\0'; |
848 | } else { |
849 | title = strdup(tmp); |
850 | } |
851 | } else if (line->type == LT_MENUENTRY) |
852 | title = strdup(line->elements[1].item); |
853 | else |
854 | return NULL; |
855 | return title; |
856 | } |
857 | |
858 | static int readFile(int fd, char ** bufPtr) { |
859 | int alloced = 0, size = 0, i = 0; |
860 | char * buf = NULL; |
861 | |
862 | do { |
863 | size += i; |
864 | if ((size + 1024) > alloced) { |
865 | alloced += 4096; |
866 | buf = realloc(buf, alloced + 1); |
867 | } |
868 | } while ((i = read(fd, buf + size, 1024)) > 0); |
869 | |
870 | if (i < 0) { |
871 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); |
872 | free(buf); |
873 | return 1; |
874 | } |
875 | |
876 | buf = realloc(buf, size + 2); |
877 | if (size == 0) |
878 | buf[size++] = '\n'; |
879 | else |
880 | if (buf[size - 1] != '\n') |
881 | buf[size++] = '\n'; |
882 | buf[size] = '\0'; |
883 | |
884 | *bufPtr = buf; |
885 | |
886 | return 0; |
887 | } |
888 | |
889 | static void lineInit(struct singleLine * line) { |
890 | line->indent = NULL; |
891 | line->elements = NULL; |
892 | line->numElements = 0; |
893 | line->next = NULL; |
894 | } |
895 | |
896 | struct singleLine * lineDup(struct singleLine * line) { |
897 | struct singleLine * newLine = malloc(sizeof(*newLine)); |
898 | |
899 | newLine->indent = strdup(line->indent); |
900 | newLine->next = NULL; |
901 | newLine->type = line->type; |
902 | newLine->numElements = line->numElements; |
903 | newLine->elements = malloc(sizeof(*newLine->elements) * |
904 | newLine->numElements); |
905 | |
906 | for (int i = 0; i < newLine->numElements; i++) { |
907 | newLine->elements[i].indent = strdup(line->elements[i].indent); |
908 | newLine->elements[i].item = strdup(line->elements[i].item); |
909 | } |
910 | |
911 | return newLine; |
912 | } |
913 | |
914 | static void lineFree(struct singleLine * line) { |
915 | if (line->indent) free(line->indent); |
916 | |
917 | for (int i = 0; i < line->numElements; i++) { |
918 | free(line->elements[i].item); |
919 | free(line->elements[i].indent); |
920 | } |
921 | |
922 | if (line->elements) free(line->elements); |
923 | lineInit(line); |
924 | } |
925 | |
926 | static int lineWrite(FILE * out, struct singleLine * line, |
927 | struct configFileInfo * cfi) { |
928 | if (fprintf(out, "%s", line->indent) == -1) return -1; |
929 | |
930 | for (int i = 0; i < line->numElements; i++) { |
931 | /* Need to handle this, because we strip the quotes from |
932 | * menuentry when read it. */ |
933 | if (line->type == LT_MENUENTRY && i == 1) { |
934 | if(!isquote(*line->elements[i].item)) |
935 | fprintf(out, "\'%s\'", line->elements[i].item); |
936 | else |
937 | fprintf(out, "%s", line->elements[i].item); |
938 | fprintf(out, "%s", line->elements[i].indent); |
939 | |
940 | continue; |
941 | } |
942 | |
943 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
944 | if (fputc('"', out) == EOF) return -1; |
945 | |
946 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; |
947 | if (i < line->numElements - 1) |
948 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; |
949 | } |
950 | |
951 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
952 | if (fputc('"', out) == EOF) return -1; |
953 | |
954 | if (fprintf(out, "\n") == -1) return -1; |
955 | |
956 | return 0; |
957 | } |
958 | |
959 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
960 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
961 | struct configFileInfo * cfi) { |
962 | char * end; |
963 | char * start = *bufPtr; |
964 | char * chptr; |
965 | int elementsAlloced = 0; |
966 | struct lineElement * element; |
967 | int first = 1; |
968 | |
969 | lineFree(line); |
970 | |
971 | end = strchr(start, '\n'); |
972 | *end = '\0'; |
973 | *bufPtr = end + 1; |
974 | |
975 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
976 | |
977 | line->indent = strndup(start, chptr - start); |
978 | start = chptr; |
979 | |
980 | while (start < end) { |
981 | /* we know !isspace(*start) */ |
982 | |
983 | if (elementsAlloced == line->numElements) { |
984 | elementsAlloced += 5; |
985 | line->elements = realloc(line->elements, |
986 | sizeof(*line->elements) * elementsAlloced); |
987 | } |
988 | |
989 | element = line->elements + line->numElements; |
990 | |
991 | chptr = start; |
992 | while (*chptr && !isspace(*chptr)) { |
993 | if (first && *chptr == '=') break; |
994 | chptr++; |
995 | } |
996 | element->item = strndup(start, chptr - start); |
997 | start = chptr; |
998 | |
999 | /* lilo actually accepts the pathological case of append = " foo " */ |
1000 | if (*start == '=') |
1001 | chptr = start + 1; |
1002 | else |
1003 | chptr = start; |
1004 | |
1005 | do { |
1006 | for (; *chptr && isspace(*chptr); chptr++); |
1007 | if (*chptr == '=') |
1008 | chptr = chptr + 1; |
1009 | } while (isspace(*chptr)); |
1010 | |
1011 | element->indent = strndup(start, chptr - start); |
1012 | start = chptr; |
1013 | |
1014 | line->numElements++; |
1015 | first = 0; |
1016 | } |
1017 | |
1018 | if (!line->numElements) |
1019 | line->type = LT_WHITESPACE; |
1020 | else { |
1021 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
1022 | if (line->type == LT_UNKNOWN) { |
1023 | /* zipl does [title] instead of something reasonable like all |
1024 | * the other boot loaders. kind of ugly */ |
1025 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
1026 | line->type = LT_TITLE; |
1027 | } |
1028 | |
1029 | /* this is awkward, but we need to be able to handle keywords |
1030 | that begin with a # (specifically for #boot in grub.conf), |
1031 | but still make comments lines with no elements (everything |
1032 | stored in the indent */ |
1033 | if (*line->elements[0].item == '#') { |
1034 | char * fullLine; |
1035 | int len; |
1036 | |
1037 | len = strlen(line->indent); |
1038 | for (int i = 0; i < line->numElements; i++) |
1039 | len += strlen(line->elements[i].item) + |
1040 | strlen(line->elements[i].indent); |
1041 | |
1042 | fullLine = malloc(len + 1); |
1043 | strcpy(fullLine, line->indent); |
1044 | free(line->indent); |
1045 | line->indent = fullLine; |
1046 | |
1047 | for (int i = 0; i < line->numElements; i++) { |
1048 | strcat(fullLine, line->elements[i].item); |
1049 | strcat(fullLine, line->elements[i].indent); |
1050 | free(line->elements[i].item); |
1051 | free(line->elements[i].indent); |
1052 | } |
1053 | |
1054 | line->type = LT_WHITESPACE; |
1055 | line->numElements = 0; |
1056 | } |
1057 | } else { |
1058 | struct keywordTypes *kw; |
1059 | |
1060 | kw = getKeywordByType(line->type, cfi); |
1061 | |
1062 | /* space isn't the only separator, we need to split |
1063 | * elements up more |
1064 | */ |
1065 | if (!isspace(kw->separatorChar)) { |
1066 | char indent[2] = ""; |
1067 | indent[0] = kw->separatorChar; |
1068 | for (int i = 1; i < line->numElements; i++) { |
1069 | char *p; |
1070 | int numNewElements; |
1071 | |
1072 | numNewElements = 0; |
1073 | p = line->elements[i].item; |
1074 | while (*p != '\0') { |
1075 | if (*p == kw->separatorChar) |
1076 | numNewElements++; |
1077 | p++; |
1078 | } |
1079 | if (line->numElements + numNewElements >= elementsAlloced) { |
1080 | elementsAlloced += numNewElements + 5; |
1081 | line->elements = realloc(line->elements, |
1082 | sizeof(*line->elements) * elementsAlloced); |
1083 | } |
1084 | |
1085 | for (int j = line->numElements; j > i; j--) { |
1086 | line->elements[j + numNewElements] = line->elements[j]; |
1087 | } |
1088 | line->numElements += numNewElements; |
1089 | |
1090 | p = line->elements[i].item; |
1091 | while (*p != '\0') { |
1092 | |
1093 | while (*p != kw->separatorChar && *p != '\0') p++; |
1094 | if (*p == '\0') { |
1095 | break; |
1096 | } |
1097 | |
1098 | line->elements[i + 1].indent = line->elements[i].indent; |
1099 | line->elements[i].indent = strdup(indent); |
1100 | *p++ = '\0'; |
1101 | i++; |
1102 | line->elements[i].item = strdup(p); |
1103 | } |
1104 | } |
1105 | } |
1106 | } |
1107 | } |
1108 | |
1109 | return 0; |
1110 | } |
1111 | |
1112 | static int isnumber(const char *s) |
1113 | { |
1114 | int i; |
1115 | for (i = 0; s[i] != '\0'; i++) |
1116 | if (s[i] < '0' || s[i] > '9') |
1117 | return 0; |
1118 | return i; |
1119 | } |
1120 | |
1121 | static struct grubConfig * readConfig(const char * inName, |
1122 | struct configFileInfo * cfi) { |
1123 | int in; |
1124 | char * incoming = NULL, * head; |
1125 | int rc; |
1126 | int sawEntry = 0; |
1127 | int movedLine = 0; |
1128 | struct grubConfig * cfg; |
1129 | struct singleLine * last = NULL, * line, * defaultLine = NULL; |
1130 | char * end; |
1131 | struct singleEntry * entry = NULL; |
1132 | int len; |
1133 | char * buf; |
1134 | |
1135 | if (inName == NULL) { |
1136 | printf("Could not find bootloader configuration\n"); |
1137 | exit(1); |
1138 | } else if (!strcmp(inName, "-")) { |
1139 | in = 0; |
1140 | } else { |
1141 | if ((in = open(inName, O_RDONLY)) < 0) { |
1142 | fprintf(stderr, _("error opening %s for read: %s\n"), |
1143 | inName, strerror(errno)); |
1144 | return NULL; |
1145 | } |
1146 | } |
1147 | |
1148 | rc = readFile(in, &incoming); |
1149 | close(in); |
1150 | if (rc) return NULL; |
1151 | |
1152 | head = incoming; |
1153 | cfg = malloc(sizeof(*cfg)); |
1154 | cfg->primaryIndent = strdup(""); |
1155 | cfg->secondaryIndent = strdup("\t"); |
1156 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
1157 | cfg->cfi = cfi; |
1158 | cfg->theLines = NULL; |
1159 | cfg->entries = NULL; |
1160 | cfg->fallbackImage = 0; |
1161 | |
1162 | /* copy everything we have */ |
1163 | while (*head) { |
1164 | line = malloc(sizeof(*line)); |
1165 | lineInit(line); |
1166 | |
1167 | if (getNextLine(&head, line, cfi)) { |
1168 | free(line); |
1169 | /* XXX memory leak of everything in cfg */ |
1170 | return NULL; |
1171 | } |
1172 | |
1173 | if (!sawEntry && line->numElements) { |
1174 | free(cfg->primaryIndent); |
1175 | cfg->primaryIndent = strdup(line->indent); |
1176 | } else if (line->numElements) { |
1177 | free(cfg->secondaryIndent); |
1178 | cfg->secondaryIndent = strdup(line->indent); |
1179 | } |
1180 | |
1181 | if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) { |
1182 | sawEntry = 1; |
1183 | if (!entry) { |
1184 | cfg->entries = malloc(sizeof(*entry)); |
1185 | entry = cfg->entries; |
1186 | } else { |
1187 | entry->next = malloc(sizeof(*entry)); |
1188 | entry = entry->next; |
1189 | } |
1190 | |
1191 | entry->skip = 0; |
1192 | entry->multiboot = 0; |
1193 | entry->lines = NULL; |
1194 | entry->next = NULL; |
1195 | } |
1196 | |
1197 | if (line->type == LT_SET_VARIABLE) { |
1198 | dbgPrintf("found 'set' command (%d elements): ", line->numElements); |
1199 | dbgPrintf("%s", line->indent); |
1200 | for (int i = 0; i < line->numElements; i++) |
1201 | dbgPrintf("\"%s\"%s", line->elements[i].item, line->elements[i].indent); |
1202 | dbgPrintf("\n"); |
1203 | struct keywordTypes *kwType = getKeywordByType(LT_DEFAULT, cfi); |
1204 | if (kwType && line->numElements == 3 && |
1205 | !strcmp(line->elements[1].item, kwType->key) && |
1206 | !is_special_grub2_variable(line->elements[2].item)) { |
1207 | dbgPrintf("Line sets default config\n"); |
1208 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1209 | defaultLine = line; |
1210 | } |
1211 | |
1212 | } else if (iskernel(line->type)) { |
1213 | /* if by some freak chance this is multiboot and the "module" |
1214 | * lines came earlier in the template, make sure to use LT_HYPER |
1215 | * instead of LT_KERNEL now |
1216 | */ |
1217 | if (entry && entry->multiboot) |
1218 | line->type = LT_HYPER; |
1219 | |
1220 | } else if (line->type == LT_MBMODULE) { |
1221 | /* go back and fix the LT_KERNEL line to indicate LT_HYPER |
1222 | * instead, now that we know this is a multiboot entry. |
1223 | * This only applies to grub, but that's the only place we |
1224 | * should find LT_MBMODULE lines anyway. |
1225 | */ |
1226 | for (struct singleLine *l = entry->lines; l; l = l->next) { |
1227 | if (l->type == LT_HYPER) |
1228 | break; |
1229 | else if (iskernel(l->type)) { |
1230 | l->type = LT_HYPER; |
1231 | break; |
1232 | } |
1233 | } |
1234 | entry->multiboot = 1; |
1235 | |
1236 | } else if (line->type == LT_HYPER) { |
1237 | entry->multiboot = 1; |
1238 | |
1239 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
1240 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); |
1241 | if (*end) cfg->fallbackImage = -1; |
1242 | |
1243 | } else if ((line->type == LT_DEFAULT && cfi->defaultIsUnquoted) || |
1244 | (line->type == LT_TITLE && line->numElements > 1)) { |
1245 | /* make the title/default a single argument (undoing our parsing) */ |
1246 | len = 0; |
1247 | for (int i = 1; i < line->numElements; i++) { |
1248 | len += strlen(line->elements[i].item); |
1249 | len += strlen(line->elements[i].indent); |
1250 | } |
1251 | buf = malloc(len + 1); |
1252 | *buf = '\0'; |
1253 | |
1254 | for (int i = 1; i < line->numElements; i++) { |
1255 | strcat(buf, line->elements[i].item); |
1256 | free(line->elements[i].item); |
1257 | |
1258 | if ((i + 1) != line->numElements) { |
1259 | strcat(buf, line->elements[i].indent); |
1260 | free(line->elements[i].indent); |
1261 | } |
1262 | } |
1263 | |
1264 | line->elements[1].indent = |
1265 | line->elements[line->numElements - 1].indent; |
1266 | line->elements[1].item = buf; |
1267 | line->numElements = 2; |
1268 | } else if (line->type == LT_MENUENTRY && line->numElements > 3) { |
1269 | /* let --remove-kernel="TITLE=what" work */ |
1270 | len = 0; |
1271 | char *extras; |
1272 | char *title; |
1273 | |
1274 | for (int i = 1; i < line->numElements; i++) { |
1275 | len += strlen(line->elements[i].item); |
1276 | len += strlen(line->elements[i].indent); |
1277 | } |
1278 | buf = malloc(len + 1); |
1279 | *buf = '\0'; |
1280 | |
1281 | /* allocate mem for extra flags. */ |
1282 | extras = malloc(len + 1); |
1283 | *extras = '\0'; |
1284 | |
1285 | /* get title. */ |
1286 | for (int i = 0; i < line->numElements; i++) { |
1287 | if (!strcmp(line->elements[i].item, "menuentry")) |
1288 | continue; |
1289 | if (isquote(*line->elements[i].item)) |
1290 | title = line->elements[i].item + 1; |
1291 | else |
1292 | title = line->elements[i].item; |
1293 | |
1294 | len = strlen(title); |
1295 | if (isquote(title[len-1])) { |
1296 | strncat(buf, title,len-1); |
1297 | break; |
1298 | } else { |
1299 | strcat(buf, title); |
1300 | strcat(buf, line->elements[i].indent); |
1301 | } |
1302 | } |
1303 | |
1304 | /* get extras */ |
1305 | int count = 0; |
1306 | for (int i = 0; i < line->numElements; i++) { |
1307 | if (count >= 2) { |
1308 | strcat(extras, line->elements[i].item); |
1309 | strcat(extras, line->elements[i].indent); |
1310 | } |
1311 | |
1312 | if (!strcmp(line->elements[i].item, "menuentry")) |
1313 | continue; |
1314 | |
1315 | /* count ' or ", there should be two in menuentry line. */ |
1316 | if (isquote(*line->elements[i].item)) |
1317 | count++; |
1318 | |
1319 | len = strlen(line->elements[i].item); |
1320 | |
1321 | if (isquote(line->elements[i].item[len -1])) |
1322 | count++; |
1323 | |
1324 | /* ok, we get the final ' or ", others are extras. */ |
1325 | } |
1326 | line->elements[1].indent = |
1327 | line->elements[line->numElements - 2].indent; |
1328 | line->elements[1].item = buf; |
1329 | line->elements[2].indent = |
1330 | line->elements[line->numElements - 2].indent; |
1331 | line->elements[2].item = extras; |
1332 | line->numElements = 3; |
1333 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
1334 | /* Strip off any " which may be present; they'll be put back |
1335 | on write. This is one of the few (the only?) places that grubby |
1336 | canonicalizes the output */ |
1337 | |
1338 | if (line->numElements >= 2) { |
1339 | int last, len; |
1340 | |
1341 | if (isquote(*line->elements[1].item)) |
1342 | memmove(line->elements[1].item, line->elements[1].item + 1, |
1343 | strlen(line->elements[1].item + 1) + 1); |
1344 | |
1345 | last = line->numElements - 1; |
1346 | len = strlen(line->elements[last].item) - 1; |
1347 | if (isquote(line->elements[last].item[len])) |
1348 | line->elements[last].item[len] = '\0'; |
1349 | } |
1350 | } |
1351 | |
1352 | if (line->type == LT_DEFAULT && line->numElements == 2) { |
1353 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1354 | defaultLine = line; |
1355 | } |
1356 | |
1357 | /* If we find a generic config option which should live at the |
1358 | top of the file, move it there. Old versions of grubby were |
1359 | probably responsible for putting new images in the wrong |
1360 | place in front of it anyway. */ |
1361 | if (sawEntry && line->type == LT_GENERIC) { |
1362 | struct singleLine **l = &cfg->theLines; |
1363 | struct singleLine **last_nonws = &cfg->theLines; |
1364 | while (*l) { |
1365 | if ((*l)->type != LT_WHITESPACE) |
1366 | last_nonws = &((*l)->next); |
1367 | l = &((*l)->next); |
1368 | } |
1369 | line->next = *last_nonws; |
1370 | *last_nonws = line; |
1371 | movedLine = 1; |
1372 | continue; /* without setting 'last' */ |
1373 | } |
1374 | |
1375 | /* If a second line of whitespace happens after a generic option |
1376 | which was moved, drop it. */ |
1377 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { |
1378 | lineFree(line); |
1379 | free(line); |
1380 | movedLine = 0; |
1381 | continue; |
1382 | } |
1383 | movedLine = 0; |
1384 | |
1385 | if (sawEntry) { |
1386 | if (!entry->lines) |
1387 | entry->lines = line; |
1388 | else |
1389 | last->next = line; |
1390 | dbgPrintf("readConfig added %s to %p\n", getKeyByType(line->type, cfi), entry); |
1391 | |
1392 | /* we could have seen this outside of an entry... if so, we |
1393 | * ignore it like any other line we don't grok */ |
1394 | if (line->type == LT_ENTRY_END && sawEntry) |
1395 | sawEntry = 0; |
1396 | } else { |
1397 | if (!cfg->theLines) |
1398 | cfg->theLines = line; |
1399 | else |
1400 | last->next = line; |
1401 | dbgPrintf("readConfig added %s to cfg\n", getKeyByType(line->type, cfi)); |
1402 | } |
1403 | |
1404 | last = line; |
1405 | } |
1406 | |
1407 | free(incoming); |
1408 | |
1409 | dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset"); |
1410 | if (defaultLine) { |
1411 | if (defaultLine->numElements > 2 && |
1412 | cfi->defaultSupportSaved && |
1413 | !strncmp(defaultLine->elements[2].item,"\"${saved_entry}\"", 16)) { |
1414 | cfg->cfi->defaultIsSaved = 1; |
1415 | cfg->defaultImage = DEFAULT_SAVED_GRUB2; |
1416 | if (cfg->cfi->getEnv) { |
1417 | char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry"); |
1418 | if (defTitle) { |
1419 | int index = 0; |
1420 | if (isnumber(defTitle)) { |
1421 | index = atoi(defTitle); |
1422 | entry = findEntryByIndex(cfg, index); |
1423 | } else { |
1424 | entry = findEntryByTitle(cfg, defTitle, &index); |
1425 | } |
1426 | if (entry) |
1427 | cfg->defaultImage = index; |
1428 | } |
1429 | } |
1430 | } else if (cfi->defaultIsVariable) { |
1431 | char *value = defaultLine->elements[2].item; |
1432 | while (*value && (*value == '"' || *value == '\'' || |
1433 | *value == ' ' || *value == '\t')) |
1434 | value++; |
1435 | cfg->defaultImage = strtol(value, &end, 10); |
1436 | while (*end && (*end == '"' || *end == '\'' || |
1437 | *end == ' ' || *end == '\t')) |
1438 | end++; |
1439 | if (*end) cfg->defaultImage = -1; |
1440 | } else if (cfi->defaultSupportSaved && |
1441 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { |
1442 | cfg->defaultImage = DEFAULT_SAVED; |
1443 | } else if (cfi->defaultIsIndex) { |
1444 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); |
1445 | if (*end) cfg->defaultImage = -1; |
1446 | } else if (defaultLine->numElements >= 2) { |
1447 | int i = 0; |
1448 | while ((entry = findEntryByIndex(cfg, i))) { |
1449 | for (line = entry->lines; line; line = line->next) |
1450 | if (line->type == LT_TITLE) break; |
1451 | |
1452 | if (!cfi->titleBracketed) { |
1453 | if (line && (line->numElements >= 2) && |
1454 | !strcmp(defaultLine->elements[1].item, |
1455 | line->elements[1].item)) break; |
1456 | } else if (line) { |
1457 | if (!strcmp(defaultLine->elements[1].item, |
1458 | extractTitle(cfg, line))) break; |
1459 | } |
1460 | i++; |
1461 | entry = NULL; |
1462 | } |
1463 | |
1464 | if (entry){ |
1465 | cfg->defaultImage = i; |
1466 | }else{ |
1467 | cfg->defaultImage = -1; |
1468 | } |
1469 | } |
1470 | } else if (cfg->cfi->defaultIsSaved && cfg->cfi->getEnv) { |
1471 | char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry"); |
1472 | if (defTitle) { |
1473 | int index = 0; |
1474 | if (isnumber(defTitle)) { |
1475 | index = atoi(defTitle); |
1476 | entry = findEntryByIndex(cfg, index); |
1477 | } else { |
1478 | entry = findEntryByTitle(cfg, defTitle, &index); |
1479 | } |
1480 | if (entry) |
1481 | cfg->defaultImage = index; |
1482 | } |
1483 | } else { |
1484 | cfg->defaultImage = 0; |
1485 | } |
1486 | |
1487 | return cfg; |
1488 | } |
1489 | |
1490 | static void writeDefault(FILE * out, char * indent, |
1491 | char * separator, struct grubConfig * cfg) { |
1492 | struct singleEntry * entry; |
1493 | struct singleLine * line; |
1494 | int i; |
1495 | |
1496 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; |
1497 | |
1498 | if (cfg->defaultImage == DEFAULT_SAVED) |
1499 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
1500 | else if (cfg->cfi->defaultIsSaved) { |
1501 | fprintf(out, "%sset default=\"${saved_entry}\"\n", indent); |
1502 | if (cfg->defaultImage >= 0 && cfg->cfi->setEnv) { |
1503 | char *title; |
1504 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
1505 | line = getLineByType(LT_MENUENTRY, entry->lines); |
1506 | if (!line) |
1507 | line = getLineByType(LT_TITLE, entry->lines); |
1508 | if (line) { |
1509 | title = extractTitle(cfg, line); |
1510 | if (title) |
1511 | cfg->cfi->setEnv(cfg->cfi, "saved_entry", title); |
1512 | } |
1513 | } |
1514 | } else if (cfg->defaultImage > -1) { |
1515 | if (cfg->cfi->defaultIsIndex) { |
1516 | if (cfg->cfi->defaultIsVariable) { |
1517 | fprintf(out, "%sset default=\"%d\"\n", indent, |
1518 | cfg->defaultImage); |
1519 | } else { |
1520 | fprintf(out, "%sdefault%s%d\n", indent, separator, |
1521 | cfg->defaultImage); |
1522 | } |
1523 | } else { |
1524 | int image = cfg->defaultImage; |
1525 | |
1526 | entry = cfg->entries; |
1527 | while (entry && entry->skip) entry = entry->next; |
1528 | |
1529 | i = 0; |
1530 | while (entry && i < image) { |
1531 | entry = entry->next; |
1532 | |
1533 | while (entry && entry->skip) entry = entry->next; |
1534 | i++; |
1535 | } |
1536 | |
1537 | if (!entry) return; |
1538 | |
1539 | line = getLineByType(LT_TITLE, entry->lines); |
1540 | |
1541 | if (line && line->numElements >= 2) |
1542 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1543 | line->elements[1].item); |
1544 | else if (line && (line->numElements == 1) && |
1545 | cfg->cfi->titleBracketed) { |
1546 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1547 | extractTitle(cfg, line)); |
1548 | } |
1549 | } |
1550 | } |
1551 | } |
1552 | |
1553 | static int writeConfig(struct grubConfig * cfg, char * outName, |
1554 | const char * prefix) { |
1555 | FILE * out; |
1556 | struct singleLine * line; |
1557 | struct singleEntry * entry; |
1558 | char * tmpOutName; |
1559 | int needs = MAIN_DEFAULT; |
1560 | struct stat sb; |
1561 | int i; |
1562 | |
1563 | if (!strcmp(outName, "-")) { |
1564 | out = stdout; |
1565 | tmpOutName = NULL; |
1566 | } else { |
1567 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
1568 | char * buf; |
1569 | int len = 256; |
1570 | int rc; |
1571 | |
1572 | /* most likely the symlink is relative, so change our |
1573 | directory to the dir of the symlink */ |
1574 | char *dir = strdupa(outName); |
1575 | rc = chdir(dirname(dir)); |
1576 | do { |
1577 | buf = alloca(len + 1); |
1578 | rc = readlink(basename(outName), buf, len); |
1579 | if (rc == len) len += 256; |
1580 | } while (rc == len); |
1581 | |
1582 | if (rc < 0) { |
1583 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), |
1584 | outName, strerror(errno)); |
1585 | return 1; |
1586 | } |
1587 | |
1588 | outName = buf; |
1589 | outName[rc] = '\0'; |
1590 | } |
1591 | |
1592 | tmpOutName = alloca(strlen(outName) + 2); |
1593 | sprintf(tmpOutName, "%s-", outName); |
1594 | out = fopen(tmpOutName, "w"); |
1595 | if (!out) { |
1596 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, |
1597 | strerror(errno)); |
1598 | return 1; |
1599 | } |
1600 | |
1601 | if (!stat(outName, &sb)) { |
1602 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
1603 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), |
1604 | tmpOutName, strerror(errno)); |
1605 | fclose(out); |
1606 | unlink(tmpOutName); |
1607 | return 1; |
1608 | } |
1609 | } |
1610 | } |
1611 | |
1612 | line = cfg->theLines; |
1613 | struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi); |
1614 | while (line) { |
1615 | if (line->type == LT_SET_VARIABLE && defaultKw && |
1616 | line->numElements == 3 && |
1617 | !strcmp(line->elements[1].item, defaultKw->key) && |
1618 | !is_special_grub2_variable(line->elements[2].item)) { |
1619 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1620 | needs &= ~MAIN_DEFAULT; |
1621 | } else if (line->type == LT_DEFAULT) { |
1622 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1623 | needs &= ~MAIN_DEFAULT; |
1624 | } else if (line->type == LT_FALLBACK) { |
1625 | if (cfg->fallbackImage > -1) |
1626 | fprintf(out, "%s%s%s%d\n", line->indent, |
1627 | line->elements[0].item, line->elements[0].indent, |
1628 | cfg->fallbackImage); |
1629 | } else { |
1630 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1631 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1632 | tmpOutName, strerror(errno)); |
1633 | fclose(out); |
1634 | unlink(tmpOutName); |
1635 | return 1; |
1636 | } |
1637 | } |
1638 | |
1639 | line = line->next; |
1640 | } |
1641 | |
1642 | if (needs & MAIN_DEFAULT) { |
1643 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
1644 | needs &= ~MAIN_DEFAULT; |
1645 | } |
1646 | |
1647 | i = 0; |
1648 | while ((entry = findEntryByIndex(cfg, i++))) { |
1649 | if (entry->skip) continue; |
1650 | |
1651 | line = entry->lines; |
1652 | while (line) { |
1653 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1654 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1655 | tmpOutName, strerror(errno)); |
1656 | fclose(out); |
1657 | unlink(tmpOutName); |
1658 | return 1; |
1659 | } |
1660 | line = line->next; |
1661 | } |
1662 | } |
1663 | |
1664 | if (tmpOutName) { |
1665 | if (rename(tmpOutName, outName)) { |
1666 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), |
1667 | tmpOutName, outName, strerror(errno)); |
1668 | unlink(outName); |
1669 | return 1; |
1670 | } |
1671 | } |
1672 | |
1673 | return 0; |
1674 | } |
1675 | |
1676 | static int numEntries(struct grubConfig *cfg) { |
1677 | int i = 0; |
1678 | struct singleEntry * entry; |
1679 | |
1680 | entry = cfg->entries; |
1681 | while (entry) { |
1682 | if (!entry->skip) |
1683 | i++; |
1684 | entry = entry->next; |
1685 | } |
1686 | return i; |
1687 | } |
1688 | |
1689 | static char *findDiskForRoot() |
1690 | { |
1691 | int fd; |
1692 | char buf[65536]; |
1693 | char *devname; |
1694 | char *chptr; |
1695 | int rc; |
1696 | |
1697 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { |
1698 | fprintf(stderr, "grubby: failed to open %s: %s\n", |
1699 | _PATH_MOUNTED, strerror(errno)); |
1700 | return NULL; |
1701 | } |
1702 | |
1703 | rc = read(fd, buf, sizeof(buf) - 1); |
1704 | if (rc <= 0) { |
1705 | fprintf(stderr, "grubby: failed to read %s: %s\n", |
1706 | _PATH_MOUNTED, strerror(errno)); |
1707 | close(fd); |
1708 | return NULL; |
1709 | } |
1710 | close(fd); |
1711 | buf[rc] = '\0'; |
1712 | chptr = buf; |
1713 | |
1714 | char *foundanswer = NULL; |
1715 | |
1716 | while (chptr && chptr != buf+rc) { |
1717 | devname = chptr; |
1718 | |
1719 | /* |
1720 | * The first column of a mtab entry is the device, but if the entry is a |
1721 | * special device it won't start with /, so move on to the next line. |
1722 | */ |
1723 | if (*devname != '/') { |
1724 | chptr = strchr(chptr, '\n'); |
1725 | if (chptr) |
1726 | chptr++; |
1727 | continue; |
1728 | } |
1729 | |
1730 | /* Seek to the next space */ |
1731 | chptr = strchr(chptr, ' '); |
1732 | if (!chptr) { |
1733 | fprintf(stderr, "grubby: error parsing %s: %s\n", |
1734 | _PATH_MOUNTED, strerror(errno)); |
1735 | return NULL; |
1736 | } |
1737 | |
1738 | /* |
1739 | * The second column of a mtab entry is the mount point, we are looking |
1740 | * for '/' obviously. |
1741 | */ |
1742 | if (*(++chptr) == '/' && *(++chptr) == ' ') { |
1743 | /* remember the last / entry in mtab */ |
1744 | foundanswer = devname; |
1745 | } |
1746 | |
1747 | /* Next line */ |
1748 | chptr = strchr(chptr, '\n'); |
1749 | if (chptr) |
1750 | chptr++; |
1751 | } |
1752 | |
1753 | /* Return the last / entry found */ |
1754 | if (foundanswer) { |
1755 | chptr = strchr(foundanswer, ' '); |
1756 | *chptr = '\0'; |
1757 | return strdup(foundanswer); |
1758 | } |
1759 | |
1760 | return NULL; |
1761 | } |
1762 | |
1763 | void printEntry(struct singleEntry * entry, FILE *f) { |
1764 | int i; |
1765 | struct singleLine * line; |
1766 | |
1767 | for (line = entry->lines; line; line = line->next) { |
1768 | log_message(f, "DBG: %s", line->indent); |
1769 | for (i = 0; i < line->numElements; i++) { |
1770 | /* Need to handle this, because we strip the quotes from |
1771 | * menuentry when read it. */ |
1772 | if (line->type == LT_MENUENTRY && i == 1) { |
1773 | if(!isquote(*line->elements[i].item)) |
1774 | log_message(f, "\'%s\'", line->elements[i].item); |
1775 | else |
1776 | log_message(f, "%s", line->elements[i].item); |
1777 | log_message(f, "%s", line->elements[i].indent); |
1778 | |
1779 | continue; |
1780 | } |
1781 | |
1782 | log_message(f, "%s%s", |
1783 | line->elements[i].item, line->elements[i].indent); |
1784 | } |
1785 | log_message(f, "\n"); |
1786 | } |
1787 | } |
1788 | |
1789 | void notSuitablePrintf(struct singleEntry * entry, int okay, const char *fmt, ...) |
1790 | { |
1791 | static int once; |
1792 | va_list argp, argq; |
1793 | |
1794 | va_start(argp, fmt); |
1795 | |
1796 | va_copy(argq, argp); |
1797 | if (!once) { |
1798 | log_time(NULL); |
1799 | log_message(NULL, "command line: %s\n", saved_command_line); |
1800 | } |
1801 | log_message(NULL, "DBG: Image entry %s: ", okay ? "succeeded" : "failed"); |
1802 | log_vmessage(NULL, fmt, argq); |
1803 | |
1804 | printEntry(entry, NULL); |
1805 | va_end(argq); |
1806 | |
1807 | if (!debug) { |
1808 | once = 1; |
1809 | va_end(argp); |
1810 | return; |
1811 | } |
1812 | |
1813 | if (okay) { |
1814 | va_end(argp); |
1815 | return; |
1816 | } |
1817 | |
1818 | if (!once) |
1819 | log_message(stderr, "DBG: command line: %s\n", saved_command_line); |
1820 | once = 1; |
1821 | fprintf(stderr, "DBG: Image entry failed: "); |
1822 | vfprintf(stderr, fmt, argp); |
1823 | printEntry(entry, stderr); |
1824 | va_end(argp); |
1825 | } |
1826 | |
1827 | #define beginswith(s, c) ((s) && (s)[0] == (c)) |
1828 | |
1829 | static int endswith(const char *s, char c) |
1830 | { |
1831 | int slen; |
1832 | |
1833 | if (!s || !s[0]) |
1834 | return 0; |
1835 | slen = strlen(s) - 1; |
1836 | |
1837 | return s[slen] == c; |
1838 | } |
1839 | |
1840 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, |
1841 | int skipRemoved, int flags) { |
1842 | struct singleLine * line; |
1843 | char * fullName; |
1844 | int i; |
1845 | char * dev; |
1846 | char * rootspec; |
1847 | char * rootdev; |
1848 | |
1849 | if (skipRemoved && entry->skip) { |
1850 | notSuitablePrintf(entry, 0, "marked to skip\n"); |
1851 | return 0; |
1852 | } |
1853 | |
1854 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI|LT_KERNEL_16, entry->lines); |
1855 | if (!line) { |
1856 | notSuitablePrintf(entry, 0, "no line found\n"); |
1857 | return 0; |
1858 | } |
1859 | if (line->numElements < 2) { |
1860 | notSuitablePrintf(entry, 0, "line has only %d elements\n", |
1861 | line->numElements); |
1862 | return 0; |
1863 | } |
1864 | |
1865 | if (flags & GRUBBY_BADIMAGE_OKAY) { |
1866 | notSuitablePrintf(entry, 1, "\n"); |
1867 | return 1; |
1868 | } |
1869 | |
1870 | fullName = alloca(strlen(bootPrefix) + |
1871 | strlen(line->elements[1].item) + 1); |
1872 | rootspec = getRootSpecifier(line->elements[1].item); |
1873 | int rootspec_offset = rootspec ? strlen(rootspec) : 0; |
1874 | int hasslash = endswith(bootPrefix, '/') || |
1875 | beginswith(line->elements[1].item + rootspec_offset, '/'); |
1876 | sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/", |
1877 | line->elements[1].item + rootspec_offset); |
1878 | if (access(fullName, R_OK)) { |
1879 | notSuitablePrintf(entry, 0, "access to %s failed\n", fullName); |
1880 | return 0; |
1881 | } |
1882 | for (i = 2; i < line->numElements; i++) |
1883 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1884 | if (i < line->numElements) { |
1885 | dev = line->elements[i].item + 5; |
1886 | } else { |
1887 | /* look for a lilo style LT_ROOT line */ |
1888 | line = getLineByType(LT_ROOT, entry->lines); |
1889 | |
1890 | if (line && line->numElements >= 2) { |
1891 | dev = line->elements[1].item; |
1892 | } else { |
1893 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS. |
1894 | * grub+multiboot uses LT_MBMODULE for the args, so check that too. |
1895 | */ |
1896 | line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines); |
1897 | |
1898 | /* failed to find one */ |
1899 | if (!line) { |
1900 | notSuitablePrintf(entry, 0, "no line found\n"); |
1901 | return 0; |
1902 | } |
1903 | |
1904 | for (i = 1; i < line->numElements; i++) |
1905 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1906 | if (i < line->numElements) |
1907 | dev = line->elements[i].item + 5; |
1908 | else { |
1909 | notSuitablePrintf(entry, 0, "no root= entry found\n"); |
1910 | /* it failed too... can't find root= */ |
1911 | return 0; |
1912 | } |
1913 | } |
1914 | } |
1915 | |
1916 | dev = getpathbyspec(dev); |
1917 | if (!getpathbyspec(dev)) { |
1918 | notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n", dev); |
1919 | return 0; |
1920 | } else |
1921 | dev = getpathbyspec(dev); |
1922 | |
1923 | rootdev = findDiskForRoot(); |
1924 | if (!rootdev) { |
1925 | notSuitablePrintf(entry, 0, "can't find root device\n"); |
1926 | return 0; |
1927 | } |
1928 | |
1929 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
1930 | notSuitablePrintf(entry, 0, "uuid missing: rootdev %s, dev %s\n", |
1931 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1932 | free(rootdev); |
1933 | return 0; |
1934 | } |
1935 | |
1936 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
1937 | notSuitablePrintf(entry, 0, "uuid mismatch: rootdev %s, dev %s\n", |
1938 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1939 | free(rootdev); |
1940 | return 0; |
1941 | } |
1942 | |
1943 | free(rootdev); |
1944 | notSuitablePrintf(entry, 1, "\n"); |
1945 | |
1946 | return 1; |
1947 | } |
1948 | |
1949 | /* returns the first match on or after the one pointed to by index (if index |
1950 | is not NULL) which is not marked as skip */ |
1951 | struct singleEntry * findEntryByPath(struct grubConfig * config, |
1952 | const char * kernel, const char * prefix, |
1953 | int * index) { |
1954 | struct singleEntry * entry = NULL; |
1955 | struct singleLine * line; |
1956 | int i; |
1957 | char * chptr; |
1958 | char * rootspec = NULL; |
1959 | enum lineType_e checkType = LT_KERNEL; |
1960 | |
1961 | if (isdigit(*kernel)) { |
1962 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
1963 | |
1964 | i = 0; |
1965 | indexVars[i] = strtol(kernel, &chptr, 10); |
1966 | while (*chptr == ',') { |
1967 | i++; |
1968 | kernel = chptr + 1; |
1969 | indexVars[i] = strtol(kernel, &chptr, 10); |
1970 | } |
1971 | |
1972 | if (*chptr) { |
1973 | /* can't parse it, bail */ |
1974 | return NULL; |
1975 | } |
1976 | |
1977 | indexVars[i + 1] = -1; |
1978 | |
1979 | i = 0; |
1980 | if (index) { |
1981 | while (i < *index) { |
1982 | i++; |
1983 | if (indexVars[i] == -1) return NULL; |
1984 | } |
1985 | } |
1986 | |
1987 | entry = findEntryByIndex(config, indexVars[i]); |
1988 | if (!entry) return NULL; |
1989 | |
1990 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI|LT_KERNEL_16, entry->lines); |
1991 | if (!line) return NULL; |
1992 | |
1993 | if (index) *index = indexVars[i]; |
1994 | return entry; |
1995 | } |
1996 | |
1997 | if (!strcmp(kernel, "DEFAULT")) { |
1998 | if (index && *index > config->defaultImage) { |
1999 | entry = NULL; |
2000 | } else { |
2001 | entry = findEntryByIndex(config, config->defaultImage); |
2002 | if (entry && entry->skip) |
2003 | entry = NULL; |
2004 | else if (index) |
2005 | *index = config->defaultImage; |
2006 | } |
2007 | } else if (!strcmp(kernel, "ALL")) { |
2008 | if (index) |
2009 | i = *index; |
2010 | else |
2011 | i = 0; |
2012 | |
2013 | while ((entry = findEntryByIndex(config, i))) { |
2014 | if (!entry->skip) break; |
2015 | i++; |
2016 | } |
2017 | |
2018 | if (entry && index) |
2019 | *index = i; |
2020 | } else { |
2021 | if (index) |
2022 | i = *index; |
2023 | else |
2024 | i = 0; |
2025 | |
2026 | if (!strncmp(kernel, "TITLE=", 6)) { |
2027 | prefix = ""; |
2028 | checkType = LT_TITLE|LT_MENUENTRY; |
2029 | kernel += 6; |
2030 | } |
2031 | |
2032 | for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) { |
2033 | if (entry->skip) continue; |
2034 | |
2035 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry); |
2036 | |
2037 | /* check all the lines matching checkType */ |
2038 | for (line = entry->lines; line; line = line->next) { |
2039 | enum lineType_e ct = checkType; |
2040 | if (entry->multiboot && checkType == LT_KERNEL) |
2041 | ct = LT_KERNEL|LT_KERNEL_EFI|LT_MBMODULE|LT_HYPER|LT_KERNEL_16; |
2042 | else if (checkType & LT_KERNEL) |
2043 | ct = checkType | LT_KERNEL_EFI | LT_KERNEL_16; |
2044 | line = getLineByType(ct, line); |
2045 | if (!line) |
2046 | break; /* not found in this entry */ |
2047 | |
2048 | if (line && line->type != LT_MENUENTRY && |
2049 | line->numElements >= 2) { |
2050 | rootspec = getRootSpecifier(line->elements[1].item); |
2051 | if (!strcmp(line->elements[1].item + |
2052 | ((rootspec != NULL) ? strlen(rootspec) : 0), |
2053 | kernel + strlen(prefix))) |
2054 | break; |
2055 | } |
2056 | if(line->type == LT_MENUENTRY && |
2057 | !strcmp(line->elements[1].item, kernel)) |
2058 | break; |
2059 | } |
2060 | |
2061 | /* make sure this entry has a kernel identifier; this skips |
2062 | * non-Linux boot entries (could find netbsd etc, though, which is |
2063 | * unfortunate) |
2064 | */ |
2065 | if (line && getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI|LT_KERNEL_16, entry->lines)) |
2066 | break; /* found 'im! */ |
2067 | } |
2068 | |
2069 | if (index) *index = i; |
2070 | } |
2071 | |
2072 | return entry; |
2073 | } |
2074 | |
2075 | struct singleEntry * findEntryByTitle(struct grubConfig * cfg, char *title, |
2076 | int * index) { |
2077 | struct singleEntry * entry; |
2078 | struct singleLine * line; |
2079 | int i; |
2080 | char * newtitle; |
2081 | |
2082 | for (i = 0, entry = cfg->entries; entry; entry = entry->next, i++) { |
2083 | if (index && i < *index) |
2084 | continue; |
2085 | line = getLineByType(LT_TITLE, entry->lines); |
2086 | if (!line) |
2087 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2088 | if (!line) |
2089 | continue; |
2090 | newtitle = grub2ExtractTitle(line); |
2091 | if (!newtitle) |
2092 | continue; |
2093 | if (!strcmp(title, newtitle)) |
2094 | break; |
2095 | } |
2096 | |
2097 | if (!entry) |
2098 | return NULL; |
2099 | |
2100 | if (index) |
2101 | *index = i; |
2102 | return entry; |
2103 | } |
2104 | |
2105 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { |
2106 | struct singleEntry * entry; |
2107 | |
2108 | entry = cfg->entries; |
2109 | while (index && entry) { |
2110 | entry = entry->next; |
2111 | index--; |
2112 | } |
2113 | |
2114 | return entry; |
2115 | } |
2116 | |
2117 | /* Find a good template to use for the new kernel. An entry is |
2118 | * good if the kernel and mkinitrd exist (even if the entry |
2119 | * is going to be removed). Try and use the default entry, but |
2120 | * if that doesn't work just take the first. If we can't find one, |
2121 | * bail. */ |
2122 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, |
2123 | int * indexPtr, int skipRemoved, int flags) { |
2124 | struct singleEntry * entry, * entry2; |
2125 | int index; |
2126 | |
2127 | if (cfg->cfi->defaultIsSaved) { |
2128 | if (cfg->cfi->getEnv) { |
2129 | char *defTitle = cfg->cfi->getEnv(cfg->cfi, "saved_entry"); |
2130 | if (defTitle) { |
2131 | int index = 0; |
2132 | if (isnumber(defTitle)) { |
2133 | index = atoi(defTitle); |
2134 | entry = findEntryByIndex(cfg, index); |
2135 | } else { |
2136 | entry = findEntryByTitle(cfg, defTitle, &index); |
2137 | } |
2138 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
2139 | cfg->defaultImage = index; |
2140 | if (indexPtr) |
2141 | *indexPtr = index; |
2142 | return entry; |
2143 | } |
2144 | } |
2145 | } |
2146 | } else if (cfg->defaultImage > -1) { |
2147 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
2148 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
2149 | if (indexPtr) *indexPtr = cfg->defaultImage; |
2150 | return entry; |
2151 | } |
2152 | } |
2153 | |
2154 | index = 0; |
2155 | while ((entry = findEntryByIndex(cfg, index))) { |
2156 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
2157 | int j; |
2158 | for (j = 0; j < index; j++) { |
2159 | entry2 = findEntryByIndex(cfg, j); |
2160 | if (entry2->skip) index--; |
2161 | } |
2162 | if (indexPtr) *indexPtr = index; |
2163 | |
2164 | return entry; |
2165 | } |
2166 | |
2167 | index++; |
2168 | } |
2169 | |
2170 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); |
2171 | |
2172 | return NULL; |
2173 | } |
2174 | |
2175 | char * findBootPrefix(void) { |
2176 | struct stat sb, sb2; |
2177 | |
2178 | stat("/", &sb); |
2179 | #ifdef __ia64__ |
2180 | stat("/boot/efi/EFI/redhat/", &sb2); |
2181 | #else |
2182 | stat("/boot", &sb2); |
2183 | #endif |
2184 | |
2185 | if (sb.st_dev == sb2.st_dev) |
2186 | return strdup(""); |
2187 | |
2188 | #ifdef __ia64__ |
2189 | return strdup("/boot/efi/EFI/redhat/"); |
2190 | #else |
2191 | return strdup("/boot"); |
2192 | #endif |
2193 | } |
2194 | |
2195 | void markRemovedImage(struct grubConfig * cfg, const char * image, |
2196 | const char * prefix) { |
2197 | struct singleEntry * entry; |
2198 | |
2199 | if (!image) |
2200 | return; |
2201 | |
2202 | /* check and see if we're removing the default image */ |
2203 | if (isdigit(*image)) { |
2204 | entry = findEntryByPath(cfg, image, prefix, NULL); |
2205 | if(entry) |
2206 | entry->skip = 1; |
2207 | return; |
2208 | } |
2209 | |
2210 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
2211 | entry->skip = 1; |
2212 | } |
2213 | |
2214 | void setDefaultImage(struct grubConfig * config, int hasNew, |
2215 | const char * defaultKernelPath, int newIsDefault, |
2216 | const char * prefix, int flags, int index) { |
2217 | struct singleEntry * entry, * entry2, * newDefault; |
2218 | int i, j; |
2219 | |
2220 | if (newIsDefault) { |
2221 | config->defaultImage = 0; |
2222 | return; |
2223 | } else if ((index >= 0) && config->cfi->defaultIsIndex) { |
2224 | if (findEntryByIndex(config, index)) |
2225 | config->defaultImage = index; |
2226 | else |
2227 | config->defaultImage = -1; |
2228 | return; |
2229 | } else if (defaultKernelPath) { |
2230 | i = 0; |
2231 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { |
2232 | config->defaultImage = i; |
2233 | } else { |
2234 | config->defaultImage = -1; |
2235 | return; |
2236 | } |
2237 | } |
2238 | |
2239 | /* defaultImage now points to what we'd like to use, but before any order |
2240 | changes */ |
2241 | if ((config->defaultImage == DEFAULT_SAVED) || |
2242 | (config->defaultImage == DEFAULT_SAVED_GRUB2)) |
2243 | /* default is set to saved, we don't want to change it */ |
2244 | return; |
2245 | |
2246 | if (config->defaultImage > -1) |
2247 | entry = findEntryByIndex(config, config->defaultImage); |
2248 | else |
2249 | entry = NULL; |
2250 | |
2251 | if (entry && !entry->skip) { |
2252 | /* we can preserve the default */ |
2253 | if (hasNew) |
2254 | config->defaultImage++; |
2255 | |
2256 | /* count the number of entries erased before this one */ |
2257 | for (j = 0; j < config->defaultImage; j++) { |
2258 | entry2 = findEntryByIndex(config, j); |
2259 | if (entry2->skip) config->defaultImage--; |
2260 | } |
2261 | } else if (hasNew) { |
2262 | config->defaultImage = 0; |
2263 | } else { |
2264 | /* Either we just erased the default (or the default line was bad |
2265 | * to begin with) and didn't put a new one in. We'll use the first |
2266 | * valid image. */ |
2267 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, |
2268 | flags); |
2269 | if (!newDefault) |
2270 | config->defaultImage = -1; |
2271 | } |
2272 | } |
2273 | |
2274 | void setFallbackImage(struct grubConfig * config, int hasNew) { |
2275 | struct singleEntry * entry, * entry2; |
2276 | int j; |
2277 | |
2278 | if (config->fallbackImage == -1) return; |
2279 | |
2280 | entry = findEntryByIndex(config, config->fallbackImage); |
2281 | if (!entry || entry->skip) { |
2282 | config->fallbackImage = -1; |
2283 | return; |
2284 | } |
2285 | |
2286 | if (hasNew) |
2287 | config->fallbackImage++; |
2288 | |
2289 | /* count the number of entries erased before this one */ |
2290 | for (j = 0; j < config->fallbackImage; j++) { |
2291 | entry2 = findEntryByIndex(config, j); |
2292 | if (entry2->skip) config->fallbackImage--; |
2293 | } |
2294 | } |
2295 | |
2296 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { |
2297 | struct singleLine * line; |
2298 | char * root = NULL; |
2299 | int i; |
2300 | int j; |
2301 | |
2302 | printf("index=%d\n", index); |
2303 | |
2304 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI|LT_KERNEL_16, entry->lines); |
2305 | if (!line) { |
2306 | printf("non linux entry\n"); |
2307 | return; |
2308 | } |
2309 | |
2310 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2311 | printf("kernel=%s\n", line->elements[1].item); |
2312 | else |
2313 | printf("kernel=%s%s\n", prefix, line->elements[1].item); |
2314 | |
2315 | if (line->numElements >= 3) { |
2316 | printf("args=\""); |
2317 | i = 2; |
2318 | while (i < line->numElements) { |
2319 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
2320 | root = line->elements[i].item + 5; |
2321 | } else { |
2322 | printf("%s%s", line->elements[i].item, |
2323 | line->elements[i].indent); |
2324 | } |
2325 | |
2326 | i++; |
2327 | } |
2328 | printf("\"\n"); |
2329 | } else { |
2330 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2331 | if (line) { |
2332 | char * s; |
2333 | |
2334 | printf("args=\""); |
2335 | i = 1; |
2336 | while (i < line->numElements) { |
2337 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
2338 | root = line->elements[i].item + 5; |
2339 | } else { |
2340 | s = line->elements[i].item; |
2341 | |
2342 | printf("%s%s", s, line->elements[i].indent); |
2343 | } |
2344 | |
2345 | i++; |
2346 | } |
2347 | |
2348 | s = line->elements[i - 1].indent; |
2349 | printf("\"\n"); |
2350 | } |
2351 | } |
2352 | |
2353 | if (!root) { |
2354 | line = getLineByType(LT_ROOT, entry->lines); |
2355 | if (line && line->numElements >= 2) |
2356 | root=line->elements[1].item; |
2357 | } |
2358 | |
2359 | if (root) { |
2360 | char * s = alloca(strlen(root) + 1); |
2361 | |
2362 | strcpy(s, root); |
2363 | if (s[strlen(s) - 1] == '"') |
2364 | s[strlen(s) - 1] = '\0'; |
2365 | /* make sure the root doesn't have a trailing " */ |
2366 | printf("root=%s\n", s); |
2367 | } |
2368 | |
2369 | line = getLineByType(LT_INITRD|LT_INITRD_EFI|LT_INITRD_16, entry->lines); |
2370 | |
2371 | if (line && line->numElements >= 2) { |
2372 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2373 | printf("initrd="); |
2374 | else |
2375 | printf("initrd=%s", prefix); |
2376 | |
2377 | for (i = 1; i < line->numElements; i++) |
2378 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
2379 | printf("\n"); |
2380 | } |
2381 | |
2382 | line = getLineByType(LT_TITLE, entry->lines); |
2383 | if (line) { |
2384 | printf("title=%s\n", line->elements[1].item); |
2385 | } else { |
2386 | char * title; |
2387 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2388 | if (line) { |
2389 | title = grub2ExtractTitle(line); |
2390 | if (title) |
2391 | printf("title=%s\n", title); |
2392 | } |
2393 | } |
2394 | |
2395 | for (j = 0, line = entry->lines; line; line = line->next) { |
2396 | if ((line->type & LT_MBMODULE) && line->numElements >= 2) { |
2397 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2398 | printf("mbmodule%d=", j); |
2399 | else |
2400 | printf("mbmodule%d=%s", j, prefix); |
2401 | |
2402 | for (i = 1; i < line->numElements; i++) |
2403 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
2404 | printf("\n"); |
2405 | j++; |
2406 | } |
2407 | } |
2408 | } |
2409 | |
2410 | int isSuseSystem(void) { |
2411 | const char * path; |
2412 | const static char default_path[] = "/etc/SuSE-release"; |
2413 | |
2414 | if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL) |
2415 | path = default_path; |
2416 | |
2417 | if (!access(path, R_OK)) |
2418 | return 1; |
2419 | return 0; |
2420 | } |
2421 | |
2422 | int isSuseGrubConf(const char * path) { |
2423 | FILE * grubConf; |
2424 | char * line = NULL; |
2425 | size_t len = 0, res = 0; |
2426 | |
2427 | grubConf = fopen(path, "r"); |
2428 | if (!grubConf) { |
2429 | dbgPrintf("Could not open SuSE configuration file '%s'\n", path); |
2430 | return 0; |
2431 | } |
2432 | |
2433 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2434 | if (!strncmp(line, "setup", 5)) { |
2435 | fclose(grubConf); |
2436 | free(line); |
2437 | return 1; |
2438 | } |
2439 | } |
2440 | |
2441 | dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n", |
2442 | path); |
2443 | |
2444 | fclose(grubConf); |
2445 | free(line); |
2446 | return 0; |
2447 | } |
2448 | |
2449 | int suseGrubConfGetLba(const char * path, int * lbaPtr) { |
2450 | FILE * grubConf; |
2451 | char * line = NULL; |
2452 | size_t res = 0, len = 0; |
2453 | |
2454 | if (!path) return 1; |
2455 | if (!lbaPtr) return 1; |
2456 | |
2457 | grubConf = fopen(path, "r"); |
2458 | if (!grubConf) return 1; |
2459 | |
2460 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2461 | if (line[res - 1] == '\n') |
2462 | line[res - 1] = '\0'; |
2463 | else if (len > res) |
2464 | line[res] = '\0'; |
2465 | else { |
2466 | line = realloc(line, res + 1); |
2467 | line[res] = '\0'; |
2468 | } |
2469 | |
2470 | if (!strncmp(line, "setup", 5)) { |
2471 | if (strstr(line, "--force-lba")) { |
2472 | *lbaPtr = 1; |
2473 | } else { |
2474 | *lbaPtr = 0; |
2475 | } |
2476 | dbgPrintf("lba: %i\n", *lbaPtr); |
2477 | break; |
2478 | } |
2479 | } |
2480 | |
2481 | free(line); |
2482 | fclose(grubConf); |
2483 | return 0; |
2484 | } |
2485 | |
2486 | int suseGrubConfGetInstallDevice(const char * path, char ** devicePtr) { |
2487 | FILE * grubConf; |
2488 | char * line = NULL; |
2489 | size_t res = 0, len = 0; |
2490 | char * lastParamPtr = NULL; |
2491 | char * secLastParamPtr = NULL; |
2492 | char installDeviceNumber = '\0'; |
2493 | char * bounds = NULL; |
2494 | |
2495 | if (!path) return 1; |
2496 | if (!devicePtr) return 1; |
2497 | |
2498 | grubConf = fopen(path, "r"); |
2499 | if (!grubConf) return 1; |
2500 | |
2501 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2502 | if (strncmp(line, "setup", 5)) |
2503 | continue; |
2504 | |
2505 | if (line[res - 1] == '\n') |
2506 | line[res - 1] = '\0'; |
2507 | else if (len > res) |
2508 | line[res] = '\0'; |
2509 | else { |
2510 | line = realloc(line, res + 1); |
2511 | line[res] = '\0'; |
2512 | } |
2513 | |
2514 | lastParamPtr = bounds = line + res; |
2515 | |
2516 | /* Last parameter in grub may be an optional IMAGE_DEVICE */ |
2517 | while (!isspace(*lastParamPtr)) |
2518 | lastParamPtr--; |
2519 | lastParamPtr++; |
2520 | |
2521 | secLastParamPtr = lastParamPtr - 2; |
2522 | dbgPrintf("lastParamPtr: %s\n", lastParamPtr); |
2523 | |
2524 | if (lastParamPtr + 3 > bounds) { |
2525 | dbgPrintf("lastParamPtr going over boundary"); |
2526 | fclose(grubConf); |
2527 | free(line); |
2528 | return 1; |
2529 | } |
2530 | if (!strncmp(lastParamPtr, "(hd", 3)) |
2531 | lastParamPtr += 3; |
2532 | dbgPrintf("lastParamPtr: %c\n", *lastParamPtr); |
2533 | |
2534 | /* |
2535 | * Second last parameter will decide wether last parameter is |
2536 | * an IMAGE_DEVICE or INSTALL_DEVICE |
2537 | */ |
2538 | while (!isspace(*secLastParamPtr)) |
2539 | secLastParamPtr--; |
2540 | secLastParamPtr++; |
2541 | |
2542 | if (secLastParamPtr + 3 > bounds) { |
2543 | dbgPrintf("secLastParamPtr going over boundary"); |
2544 | fclose(grubConf); |
2545 | free(line); |
2546 | return 1; |
2547 | } |
2548 | dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr); |
2549 | if (!strncmp(secLastParamPtr, "(hd", 3)) { |
2550 | secLastParamPtr += 3; |
2551 | dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr); |
2552 | installDeviceNumber = *secLastParamPtr; |
2553 | } else { |
2554 | installDeviceNumber = *lastParamPtr; |
2555 | } |
2556 | |
2557 | *devicePtr = malloc(6); |
2558 | snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber); |
2559 | dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber); |
2560 | fclose(grubConf); |
2561 | free(line); |
2562 | return 0; |
2563 | } |
2564 | |
2565 | free(line); |
2566 | fclose(grubConf); |
2567 | return 1; |
2568 | } |
2569 | |
2570 | int grubGetBootFromDeviceMap(const char * device, |
2571 | char ** bootPtr) { |
2572 | FILE * deviceMap; |
2573 | char * line = NULL; |
2574 | size_t res = 0, len = 0; |
2575 | char * devicePtr; |
2576 | char * bounds = NULL; |
2577 | const char * path; |
2578 | const static char default_path[] = "/boot/grub/device.map"; |
2579 | |
2580 | if (!device) return 1; |
2581 | if (!bootPtr) return 1; |
2582 | |
2583 | if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL) |
2584 | path = default_path; |
2585 | |
2586 | dbgPrintf("opening grub device.map file from: %s\n", path); |
2587 | deviceMap = fopen(path, "r"); |
2588 | if (!deviceMap) |
2589 | return 1; |
2590 | |
2591 | while ((res = getline(&line, &len, deviceMap)) != -1) { |
2592 | if (!strncmp(line, "#", 1)) |
2593 | continue; |
2594 | |
2595 | if (line[res - 1] == '\n') |
2596 | line[res - 1] = '\0'; |
2597 | else if (len > res) |
2598 | line[res] = '\0'; |
2599 | else { |
2600 | line = realloc(line, res + 1); |
2601 | line[res] = '\0'; |
2602 | } |
2603 | |
2604 | devicePtr = line; |
2605 | bounds = line + res; |
2606 | |
2607 | while ((isspace(*line) && ((devicePtr + 1) <= bounds))) |
2608 | devicePtr++; |
2609 | dbgPrintf("device: %s\n", devicePtr); |
2610 | |
2611 | if (!strncmp(devicePtr, device, strlen(device))) { |
2612 | devicePtr += strlen(device); |
2613 | while (isspace(*devicePtr) && ((devicePtr + 1) <= bounds)) |
2614 | devicePtr++; |
2615 | |
2616 | *bootPtr = strdup(devicePtr); |
2617 | break; |
2618 | } |
2619 | } |
2620 | |
2621 | free(line); |
2622 | fclose(deviceMap); |
2623 | return 0; |
2624 | } |
2625 | |
2626 | int suseGrubConfGetBoot(const char * path, char ** bootPtr) { |
2627 | char * grubDevice; |
2628 | |
2629 | if (suseGrubConfGetInstallDevice(path, &grubDevice)) |
2630 | dbgPrintf("error looking for grub installation device\n"); |
2631 | else |
2632 | dbgPrintf("grubby installation device: %s\n", grubDevice); |
2633 | |
2634 | if (grubGetBootFromDeviceMap(grubDevice, bootPtr)) |
2635 | dbgPrintf("error looking for grub boot device\n"); |
2636 | else |
2637 | dbgPrintf("grubby boot device: %s\n", *bootPtr); |
2638 | |
2639 | free(grubDevice); |
2640 | return 0; |
2641 | } |
2642 | |
2643 | int parseSuseGrubConf(int * lbaPtr, char ** bootPtr) { |
2644 | /* |
2645 | * This SuSE grub configuration file at this location is not your average |
2646 | * grub configuration file, but instead the grub commands used to setup |
2647 | * grub on that system. |
2648 | */ |
2649 | const char * path; |
2650 | const static char default_path[] = "/etc/grub.conf"; |
2651 | |
2652 | if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL) |
2653 | path = default_path; |
2654 | |
2655 | if (!isSuseGrubConf(path)) return 1; |
2656 | |
2657 | if (lbaPtr) { |
2658 | *lbaPtr = 0; |
2659 | if (suseGrubConfGetLba(path, lbaPtr)) |
2660 | return 1; |
2661 | } |
2662 | |
2663 | if (bootPtr) { |
2664 | *bootPtr = NULL; |
2665 | suseGrubConfGetBoot(path, bootPtr); |
2666 | } |
2667 | |
2668 | return 0; |
2669 | } |
2670 | |
2671 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { |
2672 | FILE * in; |
2673 | char buf[1024]; |
2674 | char * chptr; |
2675 | char * start; |
2676 | char * param; |
2677 | |
2678 | in = fopen("/etc/conf.d/grub", "r"); |
2679 | if (!in) return 1; |
2680 | |
2681 | if (lbaPtr) *lbaPtr = 0; |
2682 | if (bootPtr) *bootPtr = NULL; |
2683 | |
2684 | while (fgets(buf, sizeof(buf), in)) { |
2685 | start = buf; |
2686 | while (isspace(*start)) start++; |
2687 | if (*start == '#') continue; |
2688 | |
2689 | chptr = strchr(start, '='); |
2690 | if (!chptr) continue; |
2691 | chptr--; |
2692 | while (*chptr && isspace(*chptr)) chptr--; |
2693 | chptr++; |
2694 | *chptr = '\0'; |
2695 | |
2696 | param = chptr + 1; |
2697 | while (*param && isspace(*param)) param++; |
2698 | if (*param == '=') { |
2699 | param++; |
2700 | while (*param && isspace(*param)) param++; |
2701 | } |
2702 | |
2703 | chptr = param; |
2704 | while (*chptr && !isspace(*chptr)) chptr++; |
2705 | *chptr = '\0'; |
2706 | |
2707 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
2708 | *lbaPtr = 1; |
2709 | else if (!strcmp(start, "boot") && bootPtr) |
2710 | *bootPtr = strdup(param); |
2711 | } |
2712 | |
2713 | fclose(in); |
2714 | |
2715 | return 0; |
2716 | } |
2717 | |
2718 | void dumpSysconfigGrub(void) { |
2719 | char * boot = NULL; |
2720 | int lba; |
2721 | |
2722 | if (isSuseSystem()) { |
2723 | if (parseSuseGrubConf(&lba, &boot)) { |
2724 | free(boot); |
2725 | return; |
2726 | } |
2727 | } else { |
2728 | if (parseSysconfigGrub(&lba, &boot)) { |
2729 | free(boot); |
2730 | return; |
2731 | } |
2732 | } |
2733 | |
2734 | if (lba) printf("lba\n"); |
2735 | if (boot) { |
2736 | printf("boot=%s\n", boot); |
2737 | free(boot); |
2738 | } |
2739 | } |
2740 | |
2741 | int displayInfo(struct grubConfig * config, char * kernel, |
2742 | const char * prefix) { |
2743 | int i = 0; |
2744 | struct singleEntry * entry; |
2745 | struct singleLine * line; |
2746 | |
2747 | entry = findEntryByPath(config, kernel, prefix, &i); |
2748 | if (!entry) { |
2749 | fprintf(stderr, _("grubby: kernel not found\n")); |
2750 | return 1; |
2751 | } |
2752 | |
2753 | /* this is a horrible hack to support /etc/conf.d/grub; there must |
2754 | be a better way */ |
2755 | if (config->cfi == &grubConfigType) { |
2756 | dumpSysconfigGrub(); |
2757 | } else { |
2758 | line = getLineByType(LT_BOOT, config->theLines); |
2759 | if (line && line->numElements >= 1) { |
2760 | printf("boot=%s\n", line->elements[1].item); |
2761 | } |
2762 | |
2763 | line = getLineByType(LT_LBA, config->theLines); |
2764 | if (line) printf("lba\n"); |
2765 | } |
2766 | |
2767 | displayEntry(entry, prefix, i); |
2768 | |
2769 | i++; |
2770 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
2771 | displayEntry(entry, prefix, i); |
2772 | i++; |
2773 | } |
2774 | |
2775 | return 0; |
2776 | } |
2777 | |
2778 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
2779 | struct singleLine * tmplLine, |
2780 | struct singleLine * prevLine, |
2781 | const char * val, |
2782 | struct configFileInfo * cfi) |
2783 | { |
2784 | struct singleLine * newLine = lineDup(tmplLine); |
2785 | |
2786 | if (isEfi && cfi == &grub2ConfigType) { |
2787 | enum lineType_e old = newLine->type; |
2788 | newLine->type = preferredLineType(newLine->type, cfi); |
2789 | if (old != newLine->type) |
2790 | newLine->elements[0].item = getKeyByType(newLine->type, cfi); |
2791 | } |
2792 | |
2793 | if (val) { |
2794 | /* override the inherited value with our own. |
2795 | * This is a little weak because it only applies to elements[1] |
2796 | */ |
2797 | if (newLine->numElements > 1) |
2798 | removeElement(newLine, 1); |
2799 | insertElement(newLine, val, 1, cfi); |
2800 | |
2801 | /* but try to keep the rootspec from the template... sigh */ |
2802 | if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD|LT_KERNEL_EFI|LT_INITRD_EFI|LT_KERNEL_16|LT_INITRD_16)) { |
2803 | char * rootspec = getRootSpecifier(tmplLine->elements[1].item); |
2804 | if (rootspec != NULL) { |
2805 | free(newLine->elements[1].item); |
2806 | newLine->elements[1].item = |
2807 | sdupprintf("%s%s", rootspec, val); |
2808 | } |
2809 | } |
2810 | } |
2811 | |
2812 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? |
2813 | newLine->elements[0].item : ""); |
2814 | |
2815 | if (!entry->lines) { |
2816 | /* first one on the list */ |
2817 | entry->lines = newLine; |
2818 | } else if (prevLine) { |
2819 | /* add after prevLine */ |
2820 | newLine->next = prevLine->next; |
2821 | prevLine->next = newLine; |
2822 | } |
2823 | |
2824 | return newLine; |
2825 | } |
2826 | |
2827 | /* val may be NULL */ |
2828 | struct singleLine * addLine(struct singleEntry * entry, |
2829 | struct configFileInfo * cfi, |
2830 | enum lineType_e type, char * defaultIndent, |
2831 | const char * val) { |
2832 | struct singleLine * line, * prev; |
2833 | struct keywordTypes * kw; |
2834 | struct singleLine tmpl; |
2835 | |
2836 | /* NB: This function shouldn't allocate items on the heap, rather on the |
2837 | * stack since it calls addLineTmpl which will make copies. |
2838 | */ |
2839 | if (type == LT_TITLE && cfi->titleBracketed) { |
2840 | /* we're doing a bracketed title (zipl) */ |
2841 | tmpl.type = type; |
2842 | tmpl.numElements = 1; |
2843 | tmpl.elements = alloca(sizeof(*tmpl.elements)); |
2844 | tmpl.elements[0].item = alloca(strlen(val)+3); |
2845 | sprintf(tmpl.elements[0].item, "[%s]", val); |
2846 | tmpl.elements[0].indent = ""; |
2847 | val = NULL; |
2848 | } else if (type == LT_MENUENTRY) { |
2849 | char *lineend = "--class gnu-linux --class gnu --class os {"; |
2850 | if (!val) { |
2851 | fprintf(stderr, "Line type LT_MENUENTRY requires a value\n"); |
2852 | abort(); |
2853 | } |
2854 | kw = getKeywordByType(type, cfi); |
2855 | if (!kw) { |
2856 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2857 | abort(); |
2858 | } |
2859 | tmpl.indent = ""; |
2860 | tmpl.type = type; |
2861 | tmpl.numElements = 3; |
2862 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2863 | tmpl.elements[0].item = kw->key; |
2864 | tmpl.elements[0].indent = alloca(2); |
2865 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2866 | tmpl.elements[1].item = (char *)val; |
2867 | tmpl.elements[1].indent = alloca(2); |
2868 | sprintf(tmpl.elements[1].indent, "%c", kw->nextChar); |
2869 | tmpl.elements[2].item = alloca(strlen(lineend)+1); |
2870 | strcpy(tmpl.elements[2].item, lineend); |
2871 | tmpl.elements[2].indent = ""; |
2872 | } else { |
2873 | kw = getKeywordByType(type, cfi); |
2874 | if (!kw) { |
2875 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2876 | abort(); |
2877 | } |
2878 | tmpl.type = type; |
2879 | tmpl.numElements = val ? 2 : 1; |
2880 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2881 | tmpl.elements[0].item = kw->key; |
2882 | tmpl.elements[0].indent = alloca(2); |
2883 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2884 | if (val) { |
2885 | tmpl.elements[1].item = (char *)val; |
2886 | tmpl.elements[1].indent = ""; |
2887 | } |
2888 | } |
2889 | |
2890 | /* The last non-empty line gives us the indention to us and the line |
2891 | to insert after. Note that comments are considered empty lines, which |
2892 | may not be ideal? If there are no lines or we are looking at the |
2893 | first line, we use defaultIndent (the first line is normally indented |
2894 | differently from the rest) */ |
2895 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
2896 | if (line->numElements) prev = line; |
2897 | /* fall back on the last line if prev isn't otherwise set */ |
2898 | if (!line->next && !prev) prev = line; |
2899 | } |
2900 | |
2901 | struct singleLine *menuEntry; |
2902 | menuEntry = getLineByType(LT_MENUENTRY, entry->lines); |
2903 | if (tmpl.type == LT_ENTRY_END) { |
2904 | if (menuEntry) |
2905 | tmpl.indent = menuEntry->indent; |
2906 | else |
2907 | tmpl.indent = defaultIndent ?: ""; |
2908 | } else if (tmpl.type != LT_MENUENTRY) { |
2909 | if (menuEntry) |
2910 | tmpl.indent = "\t"; |
2911 | else if (prev == entry->lines) |
2912 | tmpl.indent = defaultIndent ?: ""; |
2913 | else |
2914 | tmpl.indent = prev->indent; |
2915 | } |
2916 | |
2917 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
2918 | } |
2919 | |
2920 | void removeLine(struct singleEntry * entry, struct singleLine * line) { |
2921 | struct singleLine * prev; |
2922 | int i; |
2923 | |
2924 | for (i = 0; i < line->numElements; i++) { |
2925 | free(line->elements[i].item); |
2926 | free(line->elements[i].indent); |
2927 | } |
2928 | free(line->elements); |
2929 | free(line->indent); |
2930 | |
2931 | if (line == entry->lines) { |
2932 | entry->lines = line->next; |
2933 | } else { |
2934 | prev = entry->lines; |
2935 | while (prev->next != line) prev = prev->next; |
2936 | prev->next = line->next; |
2937 | } |
2938 | |
2939 | free(line); |
2940 | } |
2941 | |
2942 | static void requote(struct singleLine *tmplLine, struct configFileInfo * cfi) |
2943 | { |
2944 | struct singleLine newLine = { |
2945 | .indent = tmplLine->indent, |
2946 | .type = tmplLine->type, |
2947 | .next = tmplLine->next, |
2948 | }; |
2949 | int firstQuotedItem = -1; |
2950 | int quoteLen = 0; |
2951 | int j; |
2952 | int element = 0; |
2953 | char *c; |
2954 | |
2955 | c = malloc(strlen(tmplLine->elements[0].item) + 1); |
2956 | strcpy(c, tmplLine->elements[0].item); |
2957 | insertElement(&newLine, c, element++, cfi); |
2958 | free(c); |
2959 | c = NULL; |
2960 | |
2961 | for (j = 1; j < tmplLine->numElements; j++) { |
2962 | if (firstQuotedItem == -1) { |
2963 | quoteLen += strlen(tmplLine->elements[j].item); |
2964 | |
2965 | if (isquote(tmplLine->elements[j].item[0])) { |
2966 | firstQuotedItem = j; |
2967 | quoteLen += strlen(tmplLine->elements[j].indent); |
2968 | } else { |
2969 | c = malloc(quoteLen + 1); |
2970 | strcpy(c, tmplLine->elements[j].item); |
2971 | insertElement(&newLine, c, element++, cfi); |
2972 | free(c); |
2973 | quoteLen = 0; |
2974 | } |
2975 | } else { |
2976 | int itemlen = strlen(tmplLine->elements[j].item); |
2977 | quoteLen += itemlen; |
2978 | quoteLen += strlen(tmplLine->elements[j].indent); |
2979 | |
2980 | if (isquote(tmplLine->elements[j].item[itemlen - 1])) { |
2981 | c = malloc(quoteLen + 1); |
2982 | c[0] = '\0'; |
2983 | for (int i = firstQuotedItem; i < j+1; i++) { |
2984 | strcat(c, tmplLine->elements[i].item); |
2985 | strcat(c, tmplLine->elements[i].indent); |
2986 | } |
2987 | insertElement(&newLine, c, element++, cfi); |
2988 | free(c); |
2989 | |
2990 | firstQuotedItem = -1; |
2991 | quoteLen = 0; |
2992 | } |
2993 | } |
2994 | } |
2995 | while (tmplLine->numElements) |
2996 | removeElement(tmplLine, 0); |
2997 | if (tmplLine->elements) |
2998 | free(tmplLine->elements); |
2999 | |
3000 | tmplLine->numElements = newLine.numElements; |
3001 | tmplLine->elements = newLine.elements; |
3002 | } |
3003 | |
3004 | static void insertElement(struct singleLine * line, |
3005 | const char * item, int insertHere, |
3006 | struct configFileInfo * cfi) |
3007 | { |
3008 | struct keywordTypes * kw; |
3009 | char indent[2] = ""; |
3010 | |
3011 | /* sanity check */ |
3012 | if (insertHere > line->numElements) { |
3013 | dbgPrintf("insertElement() adjusting insertHere from %d to %d\n", |
3014 | insertHere, line->numElements); |
3015 | insertHere = line->numElements; |
3016 | } |
3017 | |
3018 | line->elements = realloc(line->elements, (line->numElements + 1) * |
3019 | sizeof(*line->elements)); |
3020 | memmove(&line->elements[insertHere+1], |
3021 | &line->elements[insertHere], |
3022 | (line->numElements - insertHere) * |
3023 | sizeof(*line->elements)); |
3024 | line->elements[insertHere].item = strdup(item); |
3025 | |
3026 | kw = getKeywordByType(line->type, cfi); |
3027 | |
3028 | if (line->numElements == 0) { |
3029 | indent[0] = '\0'; |
3030 | } else if (insertHere == 0) { |
3031 | indent[0] = kw->nextChar; |
3032 | } else if (kw->separatorChar != '\0') { |
3033 | indent[0] = kw->separatorChar; |
3034 | } else { |
3035 | indent[0] = ' '; |
3036 | } |
3037 | |
3038 | if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') { |
3039 | /* move the end-of-line forward */ |
3040 | line->elements[insertHere].indent = |
3041 | line->elements[insertHere-1].indent; |
3042 | line->elements[insertHere-1].indent = strdup(indent); |
3043 | } else { |
3044 | line->elements[insertHere].indent = strdup(indent); |
3045 | } |
3046 | |
3047 | line->numElements++; |
3048 | |
3049 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", |
3050 | line->elements[0].item, |
3051 | line->elements[insertHere].item, |
3052 | line->elements[insertHere].indent, |
3053 | insertHere); |
3054 | } |
3055 | |
3056 | static void removeElement(struct singleLine * line, int removeHere) { |
3057 | int i; |
3058 | |
3059 | /* sanity check */ |
3060 | if (removeHere >= line->numElements) return; |
3061 | |
3062 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, |
3063 | removeHere, line->elements[removeHere].item); |
3064 | |
3065 | free(line->elements[removeHere].item); |
3066 | |
3067 | if (removeHere > 1) { |
3068 | /* previous argument gets this argument's post-indentation */ |
3069 | free(line->elements[removeHere-1].indent); |
3070 | line->elements[removeHere-1].indent = |
3071 | line->elements[removeHere].indent; |
3072 | } else { |
3073 | free(line->elements[removeHere].indent); |
3074 | } |
3075 | |
3076 | /* now collapse the array, but don't bother to realloc smaller */ |
3077 | for (i = removeHere; i < line->numElements - 1; i++) |
3078 | line->elements[i] = line->elements[i + 1]; |
3079 | |
3080 | line->numElements--; |
3081 | } |
3082 | |
3083 | int argMatch(const char * one, const char * two) { |
3084 | char * first, * second; |
3085 | char * chptr; |
3086 | |
3087 | first = strcpy(alloca(strlen(one) + 1), one); |
3088 | second = strcpy(alloca(strlen(two) + 1), two); |
3089 | |
3090 | chptr = strchr(first, '='); |
3091 | if (chptr) *chptr = '\0'; |
3092 | |
3093 | chptr = strchr(second, '='); |
3094 | if (chptr) *chptr = '\0'; |
3095 | |
3096 | return strcmp(first, second); |
3097 | } |
3098 | |
3099 | int updateActualImage(struct grubConfig * cfg, const char * image, |
3100 | const char * prefix, const char * addArgs, |
3101 | const char * removeArgs, int multibootArgs) { |
3102 | struct singleEntry * entry; |
3103 | struct singleLine * line, * rootLine; |
3104 | int index = 0; |
3105 | int i, k; |
3106 | const char ** newArgs, ** oldArgs; |
3107 | const char ** arg; |
3108 | int useKernelArgs, useRoot; |
3109 | int firstElement; |
3110 | int *usedElements; |
3111 | int doreplace; |
3112 | |
3113 | if (!image) return 0; |
3114 | |
3115 | if (!addArgs) { |
3116 | newArgs = malloc(sizeof(*newArgs)); |
3117 | *newArgs = NULL; |
3118 | } else { |
3119 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
3120 | fprintf(stderr, |
3121 | _("grubby: error separating arguments '%s'\n"), addArgs); |
3122 | return 1; |
3123 | } |
3124 | } |
3125 | |
3126 | if (!removeArgs) { |
3127 | oldArgs = malloc(sizeof(*oldArgs)); |
3128 | *oldArgs = NULL; |
3129 | } else { |
3130 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
3131 | fprintf(stderr, |
3132 | _("grubby: error separating arguments '%s'\n"), removeArgs); |
3133 | free(newArgs); |
3134 | return 1; |
3135 | } |
3136 | } |
3137 | |
3138 | |
3139 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
3140 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); |
3141 | |
3142 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
3143 | && !multibootArgs); |
3144 | |
3145 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3146 | |
3147 | if (multibootArgs && !entry->multiboot) |
3148 | continue; |
3149 | |
3150 | /* Determine where to put the args. If this config supports |
3151 | * LT_KERNELARGS, use that. Otherwise use |
3152 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. |
3153 | */ |
3154 | if (useKernelArgs) { |
3155 | line = getLineByType(LT_KERNELARGS, entry->lines); |
3156 | if (!line) { |
3157 | /* no LT_KERNELARGS, need to add it */ |
3158 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, |
3159 | cfg->secondaryIndent, NULL); |
3160 | } |
3161 | firstElement = 1; |
3162 | |
3163 | } else if (multibootArgs) { |
3164 | line = getLineByType(LT_HYPER, entry->lines); |
3165 | if (!line) { |
3166 | /* a multiboot entry without LT_HYPER? */ |
3167 | continue; |
3168 | } |
3169 | firstElement = 2; |
3170 | |
3171 | } else { |
3172 | line = getLineByType(LT_KERNEL|LT_MBMODULE|LT_KERNEL_EFI|LT_KERNEL_16, entry->lines); |
3173 | if (!line) { |
3174 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ |
3175 | continue; |
3176 | } |
3177 | firstElement = 2; |
3178 | } |
3179 | |
3180 | /* handle the elilo case which does: |
3181 | * append="hypervisor args -- kernel args" |
3182 | */ |
3183 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { |
3184 | /* this is a multiboot entry, make sure there's |
3185 | * -- on the args line |
3186 | */ |
3187 | for (i = firstElement; i < line->numElements; i++) { |
3188 | if (!strcmp(line->elements[i].item, "--")) |
3189 | break; |
3190 | } |
3191 | if (i == line->numElements) { |
3192 | /* assume all existing args are kernel args, |
3193 | * prepend -- to make it official |
3194 | */ |
3195 | insertElement(line, "--", firstElement, cfg->cfi); |
3196 | i = firstElement; |
3197 | } |
3198 | if (!multibootArgs) { |
3199 | /* kernel args start after the -- */ |
3200 | firstElement = i + 1; |
3201 | } |
3202 | } else if (cfg->cfi->mbConcatArgs) { |
3203 | /* this is a non-multiboot entry, remove hyper args */ |
3204 | for (i = firstElement; i < line->numElements; i++) { |
3205 | if (!strcmp(line->elements[i].item, "--")) |
3206 | break; |
3207 | } |
3208 | if (i < line->numElements) { |
3209 | /* remove args up to -- */ |
3210 | while (strcmp(line->elements[firstElement].item, "--")) |
3211 | removeElement(line, firstElement); |
3212 | /* remove -- */ |
3213 | removeElement(line, firstElement); |
3214 | } |
3215 | } |
3216 | |
3217 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
3218 | |
3219 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
3220 | |
3221 | doreplace = 1; |
3222 | for (i = firstElement; i < line->numElements; i++) { |
3223 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
3224 | !strcmp(line->elements[i].item, "--")) |
3225 | { |
3226 | /* reached the end of hyper args, insert here */ |
3227 | doreplace = 0; |
3228 | break; |
3229 | } |
3230 | if (usedElements[i]) |
3231 | continue; |
3232 | if (!argMatch(line->elements[i].item, *arg)) { |
3233 | usedElements[i]=1; |
3234 | break; |
3235 | } |
3236 | } |
3237 | |
3238 | if (i < line->numElements && doreplace) { |
3239 | /* direct replacement */ |
3240 | free(line->elements[i].item); |
3241 | line->elements[i].item = strdup(*arg); |
3242 | |
3243 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
3244 | /* root= replacement */ |
3245 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3246 | if (rootLine) { |
3247 | free(rootLine->elements[1].item); |
3248 | rootLine->elements[1].item = strdup(*arg + 5); |
3249 | } else { |
3250 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, |
3251 | cfg->secondaryIndent, *arg + 5); |
3252 | } |
3253 | } |
3254 | |
3255 | else { |
3256 | /* insert/append */ |
3257 | insertElement(line, *arg, i, cfg->cfi); |
3258 | usedElements = realloc(usedElements, line->numElements * |
3259 | sizeof(*usedElements)); |
3260 | memmove(&usedElements[i + 1], &usedElements[i], |
3261 | line->numElements - i - 1); |
3262 | usedElements[i] = 1; |
3263 | |
3264 | /* if we updated a root= here even though there is a |
3265 | LT_ROOT available we need to remove the LT_ROOT entry |
3266 | (this will happen if we switch from a device to a label) */ |
3267 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
3268 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3269 | if (rootLine) |
3270 | removeLine(entry, rootLine); |
3271 | } |
3272 | } |
3273 | } |
3274 | |
3275 | free(usedElements); |
3276 | |
3277 | for (arg = oldArgs; *arg; arg++) { |
3278 | for (i = firstElement; i < line->numElements; i++) { |
3279 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
3280 | !strcmp(line->elements[i].item, "--")) |
3281 | /* reached the end of hyper args, stop here */ |
3282 | break; |
3283 | if (!argMatch(line->elements[i].item, *arg)) { |
3284 | removeElement(line, i); |
3285 | break; |
3286 | } |
3287 | } |
3288 | /* handle removing LT_ROOT line too */ |
3289 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
3290 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3291 | if (rootLine) |
3292 | removeLine(entry, rootLine); |
3293 | } |
3294 | } |
3295 | |
3296 | if (line->numElements == 1) { |
3297 | /* don't need the line at all (note it has to be a |
3298 | LT_KERNELARGS for this to happen */ |
3299 | removeLine(entry, line); |
3300 | } |
3301 | } |
3302 | |
3303 | free(newArgs); |
3304 | free(oldArgs); |
3305 | |
3306 | return 0; |
3307 | } |
3308 | |
3309 | int updateImage(struct grubConfig * cfg, const char * image, |
3310 | const char * prefix, const char * addArgs, |
3311 | const char * removeArgs, |
3312 | const char * addMBArgs, const char * removeMBArgs) { |
3313 | int rc = 0; |
3314 | |
3315 | if (!image) return rc; |
3316 | |
3317 | /* update the main args first... */ |
3318 | if (addArgs || removeArgs) |
3319 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); |
3320 | if (rc) return rc; |
3321 | |
3322 | /* and now any multiboot args */ |
3323 | if (addMBArgs || removeMBArgs) |
3324 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); |
3325 | return rc; |
3326 | } |
3327 | |
3328 | int addMBInitrd(struct grubConfig * cfg, const char *newMBKernel, |
3329 | const char * image, const char * prefix, const char * initrd, |
3330 | const char * title) { |
3331 | struct singleEntry * entry; |
3332 | struct singleLine * line, * kernelLine, *endLine = NULL; |
3333 | int index = 0; |
3334 | |
3335 | if (!image) return 0; |
3336 | |
3337 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3338 | kernelLine = getLineByType(LT_MBMODULE, entry->lines); |
3339 | if (!kernelLine) continue; |
3340 | |
3341 | /* if title is supplied, the entry's title must match it. */ |
3342 | if (title) { |
3343 | char *linetitle; |
3344 | |
3345 | line = getLineByType(LT_TITLE|LT_MENUENTRY, entry->lines); |
3346 | if (!line) |
3347 | continue; |
3348 | |
3349 | linetitle = extractTitle(cfg, line); |
3350 | if (!linetitle) |
3351 | continue; |
3352 | if (strcmp(title, linetitle)) { |
3353 | free(linetitle); |
3354 | continue; |
3355 | } |
3356 | free(linetitle); |
3357 | } |
3358 | |
3359 | if (prefix) { |
3360 | int prefixLen = strlen(prefix); |
3361 | if (!strncmp(initrd, prefix, prefixLen)) |
3362 | initrd += prefixLen; |
3363 | } |
3364 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
3365 | if (endLine) |
3366 | removeLine(entry, endLine); |
3367 | line = addLine(entry, cfg->cfi, preferredLineType(LT_MBMODULE,cfg->cfi), |
3368 | kernelLine->indent, initrd); |
3369 | if (!line) |
3370 | return 1; |
3371 | if (endLine) { |
3372 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
3373 | if (!line) |
3374 | return 1; |
3375 | } |
3376 | |
3377 | break; |
3378 | } |
3379 | |
3380 | return 0; |
3381 | } |
3382 | |
3383 | int updateInitrd(struct grubConfig * cfg, const char * image, |
3384 | const char * prefix, const char * initrd, const char * title) { |
3385 | struct singleEntry * entry; |
3386 | struct singleLine * line, * kernelLine, *endLine = NULL; |
3387 | int index = 0; |
3388 | |
3389 | if (!image) return 0; |
3390 | |
3391 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3392 | kernelLine = getLineByType(LT_KERNEL|LT_KERNEL_EFI|LT_KERNEL_16, entry->lines); |
3393 | if (!kernelLine) continue; |
3394 | |
3395 | /* if title is supplied, the entry's title must match it. */ |
3396 | if (title) { |
3397 | char *linetitle; |
3398 | |
3399 | line = getLineByType(LT_TITLE|LT_MENUENTRY, entry->lines); |
3400 | if (!line) |
3401 | continue; |
3402 | |
3403 | linetitle = extractTitle(cfg, line); |
3404 | if (!linetitle) |
3405 | continue; |
3406 | if (strcmp(title, linetitle)) { |
3407 | free(linetitle); |
3408 | continue; |
3409 | } |
3410 | free(linetitle); |
3411 | } |
3412 | |
3413 | line = getLineByType(LT_INITRD|LT_INITRD_EFI|LT_INITRD_16, entry->lines); |
3414 | if (line) |
3415 | removeLine(entry, line); |
3416 | if (prefix) { |
3417 | int prefixLen = strlen(prefix); |
3418 | if (!strncmp(initrd, prefix, prefixLen)) |
3419 | initrd += prefixLen; |
3420 | } |
3421 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
3422 | if (endLine) |
3423 | removeLine(entry, endLine); |
3424 | enum lineType_e lt; |
3425 | switch(kernelLine->type) { |
3426 | case LT_KERNEL: |
3427 | lt = LT_INITRD; |
3428 | break; |
3429 | case LT_KERNEL_EFI: |
3430 | lt = LT_INITRD_EFI; |
3431 | break; |
3432 | case LT_KERNEL_16: |
3433 | lt = LT_INITRD_16; |
3434 | break; |
3435 | default: |
3436 | lt = preferredLineType(LT_INITRD, cfg->cfi); |
3437 | } |
3438 | line = addLine(entry, cfg->cfi, lt, kernelLine->indent, initrd); |
3439 | if (!line) |
3440 | return 1; |
3441 | if (endLine) { |
3442 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
3443 | if (!line) |
3444 | return 1; |
3445 | } |
3446 | |
3447 | break; |
3448 | } |
3449 | |
3450 | return 0; |
3451 | } |
3452 | |
3453 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { |
3454 | int fd; |
3455 | unsigned char bootSect[512]; |
3456 | int offset; |
3457 | |
3458 | fd = open(device, O_RDONLY); |
3459 | if (fd < 0) { |
3460 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3461 | device, strerror(errno)); |
3462 | return 1; |
3463 | } |
3464 | |
3465 | if (read(fd, bootSect, 512) != 512) { |
3466 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3467 | device, strerror(errno)); |
3468 | return 1; |
3469 | } |
3470 | close(fd); |
3471 | |
3472 | /* first three bytes should match, a jmp short should be in there */ |
3473 | if (memcmp(boot, bootSect, 3)) |
3474 | return 0; |
3475 | |
3476 | if (boot[1] == JMP_SHORT_OPCODE) { |
3477 | offset = boot[2] + 2; |
3478 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
3479 | offset = (boot[3] << 8) + boot[2] + 2; |
3480 | } else if (boot[0] == JMP_SHORT_OPCODE) { |
3481 | offset = boot[1] + 2; |
3482 | /* |
3483 | * it looks like grub, when copying stage1 into the mbr, patches stage1 |
3484 | * right after the JMP location, replacing other instructions such as |
3485 | * JMPs for NOOPs. So, relax the check a little bit by skipping those |
3486 | * different bytes. |
3487 | */ |
3488 | if ((bootSect[offset + 1] == NOOP_OPCODE) |
3489 | && (bootSect[offset + 2] == NOOP_OPCODE)) { |
3490 | offset = offset + 3; |
3491 | } |
3492 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
3493 | offset = (boot[2] << 8) + boot[1] + 2; |
3494 | } else { |
3495 | return 0; |
3496 | } |
3497 | |
3498 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
3499 | return 0; |
3500 | |
3501 | return 2; |
3502 | } |
3503 | |
3504 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { |
3505 | int fd; |
3506 | char buf[65536]; |
3507 | char * end; |
3508 | char * chptr; |
3509 | char * chptr2; |
3510 | int rc; |
3511 | |
3512 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
3513 | *raw* devices listed in there */ |
3514 | |
3515 | if (!strncmp(mdDev, "/dev/", 5)) |
3516 | mdDev += 5; |
3517 | |
3518 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
3519 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
3520 | strerror(errno)); |
3521 | return 2; |
3522 | } |
3523 | |
3524 | rc = read(fd, buf, sizeof(buf) - 1); |
3525 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
3526 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
3527 | strerror(errno)); |
3528 | close(fd); |
3529 | return 2; |
3530 | } |
3531 | close(fd); |
3532 | buf[rc] = '\0'; |
3533 | |
3534 | chptr = buf; |
3535 | while (*chptr) { |
3536 | end = strchr(chptr, '\n'); |
3537 | if (!end) break; |
3538 | *end = '\0'; |
3539 | |
3540 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
3541 | chptr[strlen(mdDev)] == ' ') { |
3542 | |
3543 | /* found the device */ |
3544 | while (*chptr && *chptr != ':') chptr++; |
3545 | chptr++; |
3546 | while (*chptr && isspace(*chptr)) chptr++; |
3547 | |
3548 | /* skip the "active" bit */ |
3549 | while (*chptr && !isspace(*chptr)) chptr++; |
3550 | while (*chptr && isspace(*chptr)) chptr++; |
3551 | |
3552 | /* skip the raid level */ |
3553 | while (*chptr && !isspace(*chptr)) chptr++; |
3554 | while (*chptr && isspace(*chptr)) chptr++; |
3555 | |
3556 | /* everything else is partition stuff */ |
3557 | while (*chptr) { |
3558 | chptr2 = chptr; |
3559 | while (*chptr2 && *chptr2 != '[') chptr2++; |
3560 | if (!*chptr2) break; |
3561 | |
3562 | /* yank off the numbers at the end */ |
3563 | chptr2--; |
3564 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; |
3565 | chptr2++; |
3566 | *chptr2 = '\0'; |
3567 | |
3568 | /* Better, now we need the /dev/ back. We're done with |
3569 | * everything before this point, so we can just put |
3570 | * the /dev/ part there. There will always be room. */ |
3571 | memcpy(chptr - 5, "/dev/", 5); |
3572 | rc = checkDeviceBootloader(chptr - 5, boot); |
3573 | if (rc != 2) { |
3574 | return rc; |
3575 | } |
3576 | |
3577 | chptr = chptr2 + 1; |
3578 | /* skip the [11] bit */ |
3579 | while (*chptr && !isspace(*chptr)) chptr++; |
3580 | /* and move to the next one */ |
3581 | while (*chptr && isspace(*chptr)) chptr++; |
3582 | } |
3583 | |
3584 | /* we're good to go */ |
3585 | return 2; |
3586 | } |
3587 | |
3588 | chptr = end + 1; |
3589 | } |
3590 | |
3591 | fprintf(stderr, |
3592 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
3593 | mdDev); |
3594 | return 0; |
3595 | } |
3596 | |
3597 | int checkForLilo(struct grubConfig * config) { |
3598 | int fd; |
3599 | unsigned char boot[512]; |
3600 | struct singleLine * line; |
3601 | |
3602 | for (line = config->theLines; line; line = line->next) |
3603 | if (line->type == LT_BOOT) break; |
3604 | |
3605 | if (!line) { |
3606 | fprintf(stderr, |
3607 | _("grubby: no boot line found in lilo configuration\n")); |
3608 | return 1; |
3609 | } |
3610 | |
3611 | if (line->numElements != 2) return 1; |
3612 | |
3613 | fd = open("/boot/boot.b", O_RDONLY); |
3614 | if (fd < 0) { |
3615 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3616 | "/boot/boot.b", strerror(errno)); |
3617 | return 1; |
3618 | } |
3619 | |
3620 | if (read(fd, boot, 512) != 512) { |
3621 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3622 | "/boot/boot.b", strerror(errno)); |
3623 | return 1; |
3624 | } |
3625 | close(fd); |
3626 | |
3627 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
3628 | return checkLiloOnRaid(line->elements[1].item, boot); |
3629 | |
3630 | return checkDeviceBootloader(line->elements[1].item, boot); |
3631 | } |
3632 | |
3633 | int checkForGrub2(struct grubConfig * config) { |
3634 | if (!access("/etc/grub.d/", R_OK)) |
3635 | return 2; |
3636 | |
3637 | return 1; |
3638 | } |
3639 | |
3640 | int checkForGrub(struct grubConfig * config) { |
3641 | int fd; |
3642 | unsigned char bootSect[512]; |
3643 | char * boot; |
3644 | int onSuse = isSuseSystem(); |
3645 | |
3646 | |
3647 | if (onSuse) { |
3648 | if (parseSuseGrubConf(NULL, &boot)) |
3649 | return 0; |
3650 | } else { |
3651 | if (parseSysconfigGrub(NULL, &boot)) |
3652 | return 0; |
3653 | } |
3654 | |
3655 | /* assume grub is not installed -- not an error condition */ |
3656 | if (!boot) |
3657 | return 0; |
3658 | |
3659 | fd = open("/boot/grub/stage1", O_RDONLY); |
3660 | if (fd < 0) |
3661 | /* this doesn't exist if grub hasn't been installed */ |
3662 | return 0; |
3663 | |
3664 | if (read(fd, bootSect, 512) != 512) { |
3665 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3666 | "/boot/grub/stage1", strerror(errno)); |
3667 | close(fd); |
3668 | return 1; |
3669 | } |
3670 | close(fd); |
3671 | |
3672 | /* The more elaborate checks do not work on SuSE. The checks done |
3673 | * seem to be reasonble (at least for now), so just return success |
3674 | */ |
3675 | if (onSuse) |
3676 | return 2; |
3677 | |
3678 | return checkDeviceBootloader(boot, bootSect); |
3679 | } |
3680 | |
3681 | int checkForExtLinux(struct grubConfig * config) { |
3682 | int fd; |
3683 | unsigned char bootSect[512]; |
3684 | char * boot; |
3685 | char executable[] = "/boot/extlinux/extlinux"; |
3686 | |
3687 | printf("entered: checkForExtLinux()\n"); |
3688 | |
3689 | if (parseSysconfigGrub(NULL, &boot)) |
3690 | return 0; |
3691 | |
3692 | /* assume grub is not installed -- not an error condition */ |
3693 | if (!boot) |
3694 | return 0; |
3695 | |
3696 | fd = open(executable, O_RDONLY); |
3697 | if (fd < 0) |
3698 | /* this doesn't exist if grub hasn't been installed */ |
3699 | return 0; |
3700 | |
3701 | if (read(fd, bootSect, 512) != 512) { |
3702 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3703 | executable, strerror(errno)); |
3704 | return 1; |
3705 | } |
3706 | close(fd); |
3707 | |
3708 | return checkDeviceBootloader(boot, bootSect); |
3709 | } |
3710 | |
3711 | int checkForYaboot(struct grubConfig * config) { |
3712 | /* |
3713 | * This is a simplistic check that we consider good enough for own puporses |
3714 | * |
3715 | * If we were to properly check if yaboot is *installed* we'd need to: |
3716 | * 1) get the system boot device (LT_BOOT) |
3717 | * 2) considering it's a raw filesystem, check if the yaboot binary matches |
3718 | * the content on the boot device |
3719 | * 3) if not, copy the binary to a temporary file and run "addnote" on it |
3720 | * 4) check again if binary and boot device contents match |
3721 | */ |
3722 | if (!access("/etc/yaboot.conf", R_OK)) |
3723 | return 2; |
3724 | |
3725 | return 1; |
3726 | } |
3727 | |
3728 | int checkForElilo(struct grubConfig * config) { |
3729 | if (!access("/etc/elilo.conf", R_OK)) |
3730 | return 2; |
3731 | |
3732 | return 1; |
3733 | } |
3734 | |
3735 | static char * getRootSpecifier(char * str) { |
3736 | char * idx, * rootspec = NULL; |
3737 | |
3738 | if (*str == '(') { |
3739 | idx = rootspec = strdup(str); |
3740 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; |
3741 | *(++idx) = '\0'; |
3742 | } |
3743 | return rootspec; |
3744 | } |
3745 | |
3746 | static char * getInitrdVal(struct grubConfig * config, |
3747 | const char * prefix, struct singleLine *tmplLine, |
3748 | const char * newKernelInitrd, |
3749 | const char ** extraInitrds, int extraInitrdCount) |
3750 | { |
3751 | char *initrdVal, *end; |
3752 | int i; |
3753 | size_t totalSize; |
3754 | size_t prefixLen; |
3755 | char separatorChar; |
3756 | |
3757 | prefixLen = strlen(prefix); |
3758 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */; |
3759 | |
3760 | for (i = 0; i < extraInitrdCount; i++) { |
3761 | totalSize += sizeof(separatorChar); |
3762 | totalSize += strlen(extraInitrds[i]) - prefixLen; |
3763 | } |
3764 | |
3765 | initrdVal = end = malloc(totalSize); |
3766 | |
3767 | end = stpcpy (end, newKernelInitrd + prefixLen); |
3768 | |
3769 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; |
3770 | for (i = 0; i < extraInitrdCount; i++) { |
3771 | const char *extraInitrd; |
3772 | int j; |
3773 | |
3774 | extraInitrd = extraInitrds[i] + prefixLen; |
3775 | /* Don't add entries that are already there */ |
3776 | if (tmplLine != NULL) { |
3777 | for (j = 2; j < tmplLine->numElements; j++) |
3778 | if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0) |
3779 | break; |
3780 | |
3781 | if (j != tmplLine->numElements) |
3782 | continue; |
3783 | } |
3784 | |
3785 | *end++ = separatorChar; |
3786 | end = stpcpy(end, extraInitrd); |
3787 | } |
3788 | |
3789 | return initrdVal; |
3790 | } |
3791 | |
3792 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, |
3793 | const char * prefix, |
3794 | const char * newKernelPath, const char * newKernelTitle, |
3795 | const char * newKernelArgs, const char * newKernelInitrd, |
3796 | const char ** extraInitrds, int extraInitrdCount, |
3797 | const char * newMBKernel, const char * newMBKernelArgs, |
3798 | const char * newDevTreePath) { |
3799 | struct singleEntry * new; |
3800 | struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL; |
3801 | int needs; |
3802 | char * chptr; |
3803 | |
3804 | if (!newKernelPath) return 0; |
3805 | |
3806 | /* if the newKernelTitle is too long silently munge it into something |
3807 | * we can live with. truncating is first check, then we'll just mess with |
3808 | * it until it looks better */ |
3809 | if (config->cfi->maxTitleLength && |
3810 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
3811 | char * buf = alloca(config->cfi->maxTitleLength + 7); |
3812 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); |
3813 | int i = 1; |
3814 | |
3815 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); |
3816 | while (findEntryByPath(config, buf, NULL, NULL)) { |
3817 | sprintf(numBuf, "%d", i++); |
3818 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
3819 | } |
3820 | |
3821 | newKernelTitle = buf + 6; |
3822 | } |
3823 | |
3824 | new = malloc(sizeof(*new)); |
3825 | new->skip = 0; |
3826 | new->multiboot = 0; |
3827 | new->next = config->entries; |
3828 | new->lines = NULL; |
3829 | config->entries = new; |
3830 | |
3831 | /* copy/update from the template */ |
3832 | needs = NEED_KERNEL | NEED_TITLE; |
3833 | if (newKernelInitrd) |
3834 | needs |= NEED_INITRD; |
3835 | if (newMBKernel) { |
3836 | needs |= NEED_MB; |
3837 | new->multiboot = 1; |
3838 | } |
3839 | if (newDevTreePath && getKeywordByType(LT_DEVTREE, config->cfi)) |
3840 | needs |= NEED_DEVTREE; |
3841 | |
3842 | if (template) { |
3843 | for (masterLine = template->lines; |
3844 | masterLine && (tmplLine = lineDup(masterLine)); |
3845 | lineFree(tmplLine), masterLine = masterLine->next) |
3846 | { |
3847 | dbgPrintf("addNewKernel processing %d\n", tmplLine->type); |
3848 | |
3849 | /* skip comments */ |
3850 | chptr = tmplLine->indent; |
3851 | while (*chptr && isspace(*chptr)) chptr++; |
3852 | if (*chptr == '#') continue; |
3853 | |
3854 | if (iskernel(tmplLine->type) && tmplLine->numElements >= 2) { |
3855 | if (!template->multiboot && (needs & NEED_MB)) { |
3856 | /* it's not a multiboot template and this is the kernel |
3857 | * line. Try to be intelligent about inserting the |
3858 | * hypervisor at the same time. |
3859 | */ |
3860 | if (config->cfi->mbHyperFirst) { |
3861 | /* insert the hypervisor first */ |
3862 | newLine = addLine(new, config->cfi, LT_HYPER, |
3863 | tmplLine->indent, |
3864 | newMBKernel + strlen(prefix)); |
3865 | /* set up for adding the kernel line */ |
3866 | free(tmplLine->indent); |
3867 | tmplLine->indent = strdup(config->secondaryIndent); |
3868 | needs &= ~NEED_MB; |
3869 | } |
3870 | if (needs & NEED_KERNEL) { |
3871 | /* use addLineTmpl to preserve line elements, |
3872 | * otherwise we could just call addLine. Unfortunately |
3873 | * this means making some changes to the template |
3874 | * such as the indent change above and the type |
3875 | * change below. |
3876 | */ |
3877 | struct keywordTypes * mbm_kw = |
3878 | getKeywordByType(LT_MBMODULE, config->cfi); |
3879 | if (mbm_kw) { |
3880 | tmplLine->type = LT_MBMODULE; |
3881 | free(tmplLine->elements[0].item); |
3882 | tmplLine->elements[0].item = strdup(mbm_kw->key); |
3883 | } |
3884 | newLine = addLineTmpl(new, tmplLine, newLine, |
3885 | newKernelPath + strlen(prefix), config->cfi); |
3886 | needs &= ~NEED_KERNEL; |
3887 | } |
3888 | if (needs & NEED_MB) { /* !mbHyperFirst */ |
3889 | newLine = addLine(new, config->cfi, LT_HYPER, |
3890 | config->secondaryIndent, |
3891 | newMBKernel + strlen(prefix)); |
3892 | needs &= ~NEED_MB; |
3893 | } |
3894 | } else if (needs & NEED_KERNEL) { |
3895 | newLine = addLineTmpl(new, tmplLine, newLine, |
3896 | newKernelPath + strlen(prefix), config->cfi); |
3897 | needs &= ~NEED_KERNEL; |
3898 | } |
3899 | |
3900 | } else if (tmplLine->type == LT_HYPER && |
3901 | tmplLine->numElements >= 2) { |
3902 | if (needs & NEED_MB) { |
3903 | newLine = addLineTmpl(new, tmplLine, newLine, |
3904 | newMBKernel + strlen(prefix), config->cfi); |
3905 | needs &= ~NEED_MB; |
3906 | } |
3907 | |
3908 | } else if (tmplLine->type == LT_MBMODULE && |
3909 | tmplLine->numElements >= 2) { |
3910 | if (new->multiboot) { |
3911 | if (needs & NEED_KERNEL) { |
3912 | newLine = addLineTmpl(new, tmplLine, newLine, |
3913 | newKernelPath + |
3914 | strlen(prefix), config->cfi); |
3915 | needs &= ~NEED_KERNEL; |
3916 | } else if (config->cfi->mbInitRdIsModule && |
3917 | (needs & NEED_INITRD)) { |
3918 | char *initrdVal; |
3919 | initrdVal = getInitrdVal(config, prefix, tmplLine, |
3920 | newKernelInitrd, extraInitrds, |
3921 | extraInitrdCount); |
3922 | newLine = addLineTmpl(new, tmplLine, newLine, |
3923 | initrdVal, config->cfi); |
3924 | free(initrdVal); |
3925 | needs &= ~NEED_INITRD; |
3926 | } |
3927 | } else if (needs & NEED_KERNEL) { |
3928 | /* template is multi but new is not, |
3929 | * insert the kernel in the first module slot |
3930 | */ |
3931 | tmplLine->type = preferredLineType(LT_KERNEL, config->cfi); |
3932 | free(tmplLine->elements[0].item); |
3933 | tmplLine->elements[0].item = |
3934 | strdup(getKeywordByType(tmplLine->type, |
3935 | config->cfi)->key); |
3936 | newLine = addLineTmpl(new, tmplLine, newLine, |
3937 | newKernelPath + strlen(prefix), |
3938 | config->cfi); |
3939 | needs &= ~NEED_KERNEL; |
3940 | } else if (needs & NEED_INITRD) { |
3941 | char *initrdVal; |
3942 | /* template is multi but new is not, |
3943 | * insert the initrd in the second module slot |
3944 | */ |
3945 | tmplLine->type = preferredLineType(LT_INITRD, config->cfi); |
3946 | free(tmplLine->elements[0].item); |
3947 | tmplLine->elements[0].item = |
3948 | strdup(getKeywordByType(tmplLine->type, |
3949 | config->cfi)->key); |
3950 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3951 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3952 | free(initrdVal); |
3953 | needs &= ~NEED_INITRD; |
3954 | } |
3955 | |
3956 | } else if (isinitrd(tmplLine->type) && tmplLine->numElements >= 2) { |
3957 | if (needs & NEED_INITRD && |
3958 | new->multiboot && !template->multiboot && |
3959 | config->cfi->mbInitRdIsModule) { |
3960 | /* make sure we don't insert the module initrd |
3961 | * before the module kernel... if we don't do it here, |
3962 | * it will be inserted following the template. |
3963 | */ |
3964 | if (!needs & NEED_KERNEL) { |
3965 | char *initrdVal; |
3966 | |
3967 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3968 | newLine = addLine(new, config->cfi, LT_MBMODULE, |
3969 | config->secondaryIndent, |
3970 | initrdVal); |
3971 | free(initrdVal); |
3972 | needs &= ~NEED_INITRD; |
3973 | } |
3974 | } else if (needs & NEED_INITRD) { |
3975 | char *initrdVal; |
3976 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3977 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3978 | free(initrdVal); |
3979 | needs &= ~NEED_INITRD; |
3980 | } |
3981 | |
3982 | } else if (tmplLine->type == LT_MENUENTRY && |
3983 | (needs & NEED_TITLE)) { |
3984 | requote(tmplLine, config->cfi); |
3985 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3986 | strcpy(nkt, "'"); |
3987 | strcat(nkt, newKernelTitle); |
3988 | strcat(nkt, "'"); |
3989 | newLine = addLineTmpl(new, tmplLine, newLine, nkt, config->cfi); |
3990 | free(nkt); |
3991 | needs &= ~NEED_TITLE; |
3992 | } else if (tmplLine->type == LT_TITLE && |
3993 | (needs & NEED_TITLE)) { |
3994 | if (tmplLine->numElements >= 2) { |
3995 | newLine = addLineTmpl(new, tmplLine, newLine, |
3996 | newKernelTitle, config->cfi); |
3997 | needs &= ~NEED_TITLE; |
3998 | } else if (tmplLine->numElements == 1 && |
3999 | config->cfi->titleBracketed) { |
4000 | /* addLineTmpl doesn't handle titleBracketed */ |
4001 | newLine = addLine(new, config->cfi, LT_TITLE, |
4002 | tmplLine->indent, newKernelTitle); |
4003 | needs &= ~NEED_TITLE; |
4004 | } |
4005 | } else if (tmplLine->type == LT_ECHO) { |
4006 | requote(tmplLine, config->cfi); |
4007 | static const char *prefix = "'Loading "; |
4008 | if (tmplLine->numElements > 1 && |
4009 | strstr(tmplLine->elements[1].item, prefix) && |
4010 | masterLine->next && |
4011 | iskernel(masterLine->next->type)) { |
4012 | char *newTitle = malloc(strlen(prefix) + |
4013 | strlen(newKernelTitle) + 2); |
4014 | |
4015 | strcpy(newTitle, prefix); |
4016 | strcat(newTitle, newKernelTitle); |
4017 | strcat(newTitle, "'"); |
4018 | newLine = addLine(new, config->cfi, LT_ECHO, |
4019 | tmplLine->indent, newTitle); |
4020 | free(newTitle); |
4021 | } else { |
4022 | /* pass through other lines from the template */ |
4023 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, |
4024 | config->cfi); |
4025 | } |
4026 | } else if (tmplLine->type == LT_DEVTREE && |
4027 | tmplLine->numElements == 2 && newDevTreePath) { |
4028 | newLine = addLineTmpl(new, tmplLine, newLine, |
4029 | newDevTreePath + strlen(prefix), |
4030 | config->cfi); |
4031 | needs &= ~NEED_DEVTREE; |
4032 | } else if (tmplLine->type == LT_ENTRY_END && needs & NEED_DEVTREE) { |
4033 | const char *ndtp = newDevTreePath; |
4034 | if (!strncmp(newDevTreePath, prefix, strlen(prefix))) |
4035 | ndtp += strlen(prefix); |
4036 | newLine = addLine(new, config->cfi, LT_DEVTREE, |
4037 | config->secondaryIndent, |
4038 | ndtp); |
4039 | needs &= ~NEED_DEVTREE; |
4040 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); |
4041 | } else { |
4042 | /* pass through other lines from the template */ |
4043 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); |
4044 | } |
4045 | } |
4046 | |
4047 | } else { |
4048 | /* don't have a template, so start the entry with the |
4049 | * appropriate starting line |
4050 | */ |
4051 | switch (config->cfi->entryStart) { |
4052 | case LT_KERNEL: |
4053 | case LT_KERNEL_EFI: |
4054 | case LT_KERNEL_16: |
4055 | if (new->multiboot && config->cfi->mbHyperFirst) { |
4056 | /* fall through to LT_HYPER */ |
4057 | } else { |
4058 | newLine = addLine(new, config->cfi, |
4059 | preferredLineType(LT_KERNEL, config->cfi), |
4060 | config->primaryIndent, |
4061 | newKernelPath + strlen(prefix)); |
4062 | needs &= ~NEED_KERNEL; |
4063 | break; |
4064 | } |
4065 | |
4066 | case LT_HYPER: |
4067 | newLine = addLine(new, config->cfi, LT_HYPER, |
4068 | config->primaryIndent, |
4069 | newMBKernel + strlen(prefix)); |
4070 | needs &= ~NEED_MB; |
4071 | break; |
4072 | |
4073 | case LT_MENUENTRY: { |
4074 | char *nkt = malloc(strlen(newKernelTitle)+3); |
4075 | strcpy(nkt, "'"); |
4076 | strcat(nkt, newKernelTitle); |
4077 | strcat(nkt, "'"); |
4078 | newLine = addLine(new, config->cfi, LT_MENUENTRY, |
4079 | config->primaryIndent, nkt); |
4080 | free(nkt); |
4081 | needs &= ~NEED_TITLE; |
4082 | needs |= NEED_END; |
4083 | break; |
4084 | } |
4085 | case LT_TITLE: |
4086 | if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above) |
4087 | char * templabel; |
4088 | int x = 0, y = 0; |
4089 | |
4090 | templabel = strdup(newKernelTitle); |
4091 | while( templabel[x]){ |
4092 | if( templabel[x] == ' ' ){ |
4093 | y = x; |
4094 | while( templabel[y] ){ |
4095 | templabel[y] = templabel[y+1]; |
4096 | y++; |
4097 | } |
4098 | } |
4099 | x++; |
4100 | } |
4101 | newLine = addLine(new, config->cfi, LT_TITLE, |
4102 | config->primaryIndent, templabel); |
4103 | free(templabel); |
4104 | }else{ |
4105 | newLine = addLine(new, config->cfi, LT_TITLE, |
4106 | config->primaryIndent, newKernelTitle); |
4107 | } |
4108 | needs &= ~NEED_TITLE; |
4109 | break; |
4110 | |
4111 | default: |
4112 | abort(); |
4113 | } |
4114 | } |
4115 | |
4116 | struct singleLine *endLine = NULL; |
4117 | endLine = getLineByType(LT_ENTRY_END, new->lines); |
4118 | if (endLine) { |
4119 | removeLine(new, endLine); |
4120 | needs |= NEED_END; |
4121 | } |
4122 | |
4123 | /* add the remainder of the lines, i.e. those that either |
4124 | * weren't present in the template, or in the case of no template, |
4125 | * all the lines following the entryStart. |
4126 | */ |
4127 | if (needs & NEED_TITLE) { |
4128 | newLine = addLine(new, config->cfi, LT_TITLE, |
4129 | config->secondaryIndent, |
4130 | newKernelTitle); |
4131 | needs &= ~NEED_TITLE; |
4132 | } |
4133 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
4134 | newLine = addLine(new, config->cfi, LT_HYPER, |
4135 | config->secondaryIndent, |
4136 | newMBKernel + strlen(prefix)); |
4137 | needs &= ~NEED_MB; |
4138 | } |
4139 | if (needs & NEED_KERNEL) { |
4140 | newLine = addLine(new, config->cfi, |
4141 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
4142 | config->cfi)) |
4143 | ? LT_MBMODULE |
4144 | : preferredLineType(LT_KERNEL, config->cfi), |
4145 | config->secondaryIndent, |
4146 | newKernelPath + strlen(prefix)); |
4147 | needs &= ~NEED_KERNEL; |
4148 | } |
4149 | if (needs & NEED_MB) { |
4150 | newLine = addLine(new, config->cfi, LT_HYPER, |
4151 | config->secondaryIndent, |
4152 | newMBKernel + strlen(prefix)); |
4153 | needs &= ~NEED_MB; |
4154 | } |
4155 | if (needs & NEED_INITRD) { |
4156 | char *initrdVal; |
4157 | initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount); |
4158 | newLine = addLine(new, config->cfi, |
4159 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
4160 | config->cfi)) |
4161 | ? LT_MBMODULE |
4162 | : preferredLineType(LT_INITRD, config->cfi), |
4163 | config->secondaryIndent, |
4164 | initrdVal); |
4165 | free(initrdVal); |
4166 | needs &= ~NEED_INITRD; |
4167 | } |
4168 | if (needs & NEED_DEVTREE) { |
4169 | newLine = addLine(new, config->cfi, LT_DEVTREE, |
4170 | config->secondaryIndent, |
4171 | newDevTreePath); |
4172 | needs &= ~NEED_DEVTREE; |
4173 | } |
4174 | |
4175 | /* NEEDS_END must be last on bootloaders that need it... */ |
4176 | if (needs & NEED_END) { |
4177 | newLine = addLine(new, config->cfi, LT_ENTRY_END, |
4178 | config->secondaryIndent, NULL); |
4179 | needs &= ~NEED_END; |
4180 | } |
4181 | |
4182 | if (needs) { |
4183 | printf(_("grubby: needs=%d, aborting\n"), needs); |
4184 | abort(); |
4185 | } |
4186 | |
4187 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, |
4188 | newMBKernelArgs, NULL)) return 1; |
4189 | |
4190 | return 0; |
4191 | } |
4192 | |
4193 | static void traceback(int signum) |
4194 | { |
4195 | void *array[40]; |
4196 | size_t size; |
4197 | |
4198 | signal(SIGSEGV, SIG_DFL); |
4199 | memset(array, '\0', sizeof (array)); |
4200 | size = backtrace(array, 40); |
4201 | |
4202 | fprintf(stderr, "grubby received SIGSEGV! Backtrace (%ld):\n", |
4203 | (unsigned long)size); |
4204 | backtrace_symbols_fd(array, size, STDERR_FILENO); |
4205 | exit(1); |
4206 | } |
4207 | |
4208 | int main(int argc, const char ** argv) { |
4209 | poptContext optCon; |
4210 | const char * grubConfig = NULL; |
4211 | char * outputFile = NULL; |
4212 | int arg = 0; |
4213 | int flags = 0; |
4214 | int badImageOkay = 0; |
4215 | int configureGrub2 = 0; |
4216 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
4217 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
4218 | int configureExtLinux = 0; |
4219 | int bootloaderProbe = 0; |
4220 | int extraInitrdCount = 0; |
4221 | char * updateKernelPath = NULL; |
4222 | char * newKernelPath = NULL; |
4223 | char * removeKernelPath = NULL; |
4224 | char * newKernelArgs = NULL; |
4225 | char * newKernelInitrd = NULL; |
4226 | char * newKernelTitle = NULL; |
4227 | char * newDevTreePath = NULL; |
4228 | char * newMBKernel = NULL; |
4229 | char * newMBKernelArgs = NULL; |
4230 | char * removeMBKernelArgs = NULL; |
4231 | char * removeMBKernel = NULL; |
4232 | char * bootPrefix = NULL; |
4233 | char * defaultKernel = NULL; |
4234 | char * removeArgs = NULL; |
4235 | char * kernelInfo = NULL; |
4236 | char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
4237 | char * envPath = NULL; |
4238 | const char * chptr = NULL; |
4239 | struct configFileInfo * cfi = NULL; |
4240 | struct grubConfig * config; |
4241 | struct singleEntry * template = NULL; |
4242 | int copyDefault = 0, makeDefault = 0; |
4243 | int displayDefault = 0; |
4244 | int displayDefaultIndex = 0; |
4245 | int displayDefaultTitle = 0; |
4246 | int defaultIndex = -1; |
4247 | struct poptOption options[] = { |
4248 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
4249 | _("add an entry for the specified kernel"), _("kernel-path") }, |
4250 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
4251 | _("add an entry for the specified multiboot kernel"), NULL }, |
4252 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
4253 | _("default arguments for the new kernel or new arguments for " |
4254 | "kernel being updated"), _("args") }, |
4255 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
4256 | _("default arguments for the new multiboot kernel or " |
4257 | "new arguments for multiboot kernel being updated"), NULL }, |
4258 | { "bad-image-okay", 0, 0, &badImageOkay, 0, |
4259 | _("don't sanity check images in boot entries (for testing only)"), |
4260 | NULL }, |
4261 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
4262 | _("filestystem which contains /boot directory (for testing only)"), |
4263 | _("bootfs") }, |
4264 | #if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__) |
4265 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
4266 | _("check which bootloader is installed on boot sector") }, |
4267 | #endif |
4268 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
4269 | _("path to grub config file to update (\"-\" for stdin)"), |
4270 | _("path") }, |
4271 | { "copy-default", 0, 0, ©Default, 0, |
4272 | _("use the default boot entry as a template for the new entry " |
4273 | "being added; if the default is not a linux image, or if " |
4274 | "the kernel referenced by the default image does not exist, " |
4275 | "the first linux entry whose kernel does exist is used as the " |
4276 | "template"), NULL }, |
4277 | { "debug", 0, 0, &debug, 0, |
4278 | _("print debugging information for failures") }, |
4279 | { "default-kernel", 0, 0, &displayDefault, 0, |
4280 | _("display the path of the default kernel") }, |
4281 | { "default-index", 0, 0, &displayDefaultIndex, 0, |
4282 | _("display the index of the default kernel") }, |
4283 | { "default-title", 0, 0, &displayDefaultTitle, 0, |
4284 | _("display the title of the default kernel") }, |
4285 | { "devtree", 0, POPT_ARG_STRING, &newDevTreePath, 0, |
4286 | _("device tree file for new stanza"), _("dtb-path") }, |
4287 | { "devtreedir", 0, POPT_ARG_STRING, &newDevTreePath, 0, |
4288 | _("device tree directory for new stanza"), _("dtb-path") }, |
4289 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
4290 | _("configure elilo bootloader") }, |
4291 | { "efi", 0, POPT_ARG_NONE, &isEfi, 0, |
4292 | _("force grub2 stanzas to use efi") }, |
4293 | { "env", 0, POPT_ARG_STRING, &envPath, 0, |
4294 | _("path for environment data"), |
4295 | _("path") }, |
4296 | { "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
4297 | _("configure extlinux bootloader (from syslinux)") }, |
4298 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
4299 | _("configure grub bootloader") }, |
4300 | { "grub2", 0, POPT_ARG_NONE, &configureGrub2, 0, |
4301 | _("configure grub2 bootloader") }, |
4302 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
4303 | _("display boot information for specified kernel"), |
4304 | _("kernel-path") }, |
4305 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
4306 | _("initrd image for the new kernel"), _("initrd-path") }, |
4307 | { "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
4308 | _("auxiliary initrd image for things other than the new kernel"), _("initrd-path") }, |
4309 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
4310 | _("configure lilo bootloader") }, |
4311 | { "make-default", 0, 0, &makeDefault, 0, |
4312 | _("make the newly added entry the default boot entry"), NULL }, |
4313 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
4314 | _("path to output updated config file (\"-\" for stdout)"), |
4315 | _("path") }, |
4316 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
4317 | _("remove kernel arguments"), NULL }, |
4318 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
4319 | _("remove multiboot kernel arguments"), NULL }, |
4320 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
4321 | _("remove all entries for the specified kernel"), |
4322 | _("kernel-path") }, |
4323 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
4324 | _("remove all entries for the specified multiboot kernel"), NULL }, |
4325 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
4326 | _("make the first entry referencing the specified kernel " |
4327 | "the default"), _("kernel-path") }, |
4328 | { "set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0, |
4329 | _("make the given entry index the default entry"), |
4330 | _("entry-index") }, |
4331 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
4332 | _("configure silo bootloader") }, |
4333 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
4334 | _("title to use for the new kernel entry"), _("entry-title") }, |
4335 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
4336 | _("updated information for the specified kernel"), |
4337 | _("kernel-path") }, |
4338 | { "version", 'v', 0, NULL, 'v', |
4339 | _("print the version of this program and exit"), NULL }, |
4340 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
4341 | _("configure yaboot bootloader") }, |
4342 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
4343 | _("configure zipl bootloader") }, |
4344 | POPT_AUTOHELP |
4345 | { 0, 0, 0, 0, 0 } |
4346 | }; |
4347 | |
4348 | useextlinuxmenu=0; |
4349 | |
4350 | signal(SIGSEGV, traceback); |
4351 | |
4352 | int i = 0; |
4353 | for (int j = 1; j < argc; j++) |
4354 | i += strlen(argv[j]) + 1; |
4355 | saved_command_line = malloc(i); |
4356 | if (!saved_command_line) { |
4357 | fprintf(stderr, "grubby: %m\n"); |
4358 | exit(1); |
4359 | } |
4360 | saved_command_line[0] = '\0'; |
4361 | for (int j = 1; j < argc; j++) { |
4362 | strcat(saved_command_line, argv[j]); |
4363 | strncat(saved_command_line, j == argc -1 ? "" : " ", 1); |
4364 | } |
4365 | |
4366 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
4367 | poptReadDefaultConfig(optCon, 1); |
4368 | |
4369 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
4370 | switch (arg) { |
4371 | case 'v': |
4372 | printf("grubby version %s\n", VERSION); |
4373 | exit(0); |
4374 | break; |
4375 | case 'i': |
4376 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { |
4377 | extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon)); |
4378 | } else { |
4379 | fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount); |
4380 | return 1; |
4381 | } |
4382 | break; |
4383 | } |
4384 | } |
4385 | |
4386 | if (arg < -1) { |
4387 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
4388 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
4389 | poptStrerror(arg)); |
4390 | return 1; |
4391 | } |
4392 | |
4393 | if ((chptr = poptGetArg(optCon))) { |
4394 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
4395 | return 1; |
4396 | } |
4397 | |
4398 | if ((configureLilo + configureGrub2 + configureGrub + configureELilo + |
4399 | configureYaboot + configureSilo + configureZipl + |
4400 | configureExtLinux ) > 1) { |
4401 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); |
4402 | return 1; |
4403 | } else if (bootloaderProbe && grubConfig) { |
4404 | fprintf(stderr, |
4405 | _("grubby: cannot specify config file with --bootloader-probe\n")); |
4406 | return 1; |
4407 | } else if (configureGrub2) { |
4408 | cfi = &grub2ConfigType; |
4409 | if (envPath) |
4410 | cfi->envFile = envPath; |
4411 | } else if (configureLilo) { |
4412 | cfi = &liloConfigType; |
4413 | } else if (configureGrub) { |
4414 | cfi = &grubConfigType; |
4415 | } else if (configureELilo) { |
4416 | cfi = &eliloConfigType; |
4417 | } else if (configureYaboot) { |
4418 | cfi = &yabootConfigType; |
4419 | } else if (configureSilo) { |
4420 | cfi = &siloConfigType; |
4421 | } else if (configureZipl) { |
4422 | cfi = &ziplConfigType; |
4423 | } else if (configureExtLinux) { |
4424 | cfi = &extlinuxConfigType; |
4425 | useextlinuxmenu=1; |
4426 | } |
4427 | |
4428 | if (!cfi) { |
4429 | if (grub2FindConfig(&grub2ConfigType)) |
4430 | cfi = &grub2ConfigType; |
4431 | else |
4432 | #ifdef __ia64__ |
4433 | cfi = &eliloConfigType; |
4434 | #elif __powerpc__ |
4435 | cfi = &yabootConfigType; |
4436 | #elif __sparc__ |
4437 | cfi = &siloConfigType; |
4438 | #elif __s390__ |
4439 | cfi = &ziplConfigType; |
4440 | #elif __s390x__ |
4441 | cfi = &ziplConfigtype; |
4442 | #else |
4443 | cfi = &grubConfigType; |
4444 | #endif |
4445 | } |
4446 | |
4447 | if (!grubConfig) { |
4448 | if (cfi->findConfig) |
4449 | grubConfig = cfi->findConfig(cfi); |
4450 | if (!grubConfig) |
4451 | grubConfig = cfi->defaultConfig; |
4452 | } |
4453 | |
4454 | if (bootloaderProbe && (displayDefault || kernelInfo || |
4455 | newKernelPath || removeKernelPath || makeDefault || |
4456 | defaultKernel || displayDefaultIndex || displayDefaultTitle || |
4457 | (defaultIndex >= 0))) { |
4458 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " |
4459 | "specified option")); |
4460 | return 1; |
4461 | } |
4462 | |
4463 | if ((displayDefault || kernelInfo) && (newKernelPath || |
4464 | removeKernelPath)) { |
4465 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
4466 | "be used when adding or removing kernels\n")); |
4467 | return 1; |
4468 | } |
4469 | |
4470 | if (newKernelPath && !newKernelTitle) { |
4471 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
4472 | return 1; |
4473 | } else if (!newKernelPath && (copyDefault || |
4474 | (newKernelInitrd && !updateKernelPath)|| |
4475 | makeDefault || extraInitrdCount > 0)) { |
4476 | fprintf(stderr, _("grubby: kernel path expected\n")); |
4477 | return 1; |
4478 | } |
4479 | |
4480 | if (newKernelPath && updateKernelPath) { |
4481 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
4482 | "not be used together")); |
4483 | return 1; |
4484 | } |
4485 | |
4486 | if (makeDefault && defaultKernel) { |
4487 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
4488 | "may not be used together\n")); |
4489 | return 1; |
4490 | } else if (defaultKernel && removeKernelPath && |
4491 | !strcmp(defaultKernel, removeKernelPath)) { |
4492 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); |
4493 | return 1; |
4494 | } else if (defaultKernel && newKernelPath && |
4495 | !strcmp(defaultKernel, newKernelPath)) { |
4496 | makeDefault = 1; |
4497 | defaultKernel = NULL; |
4498 | } |
4499 | else if (defaultKernel && (defaultIndex >= 0)) { |
4500 | fprintf(stderr, _("grubby: --set-default and --set-default-index " |
4501 | "may not be used together\n")); |
4502 | return 1; |
4503 | } |
4504 | |
4505 | if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) { |
4506 | fprintf(stderr, _("grubby: output file must be specified if stdin " |
4507 | "is used\n")); |
4508 | return 1; |
4509 | } |
4510 | |
4511 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel |
4512 | && !kernelInfo && !bootloaderProbe && !updateKernelPath |
4513 | && !removeMBKernel && !displayDefaultIndex && !displayDefaultTitle |
4514 | && (defaultIndex == -1)) { |
4515 | fprintf(stderr, _("grubby: no action specified\n")); |
4516 | return 1; |
4517 | } |
4518 | |
4519 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
4520 | |
4521 | if (cfi->needsBootPrefix) { |
4522 | if (!bootPrefix) { |
4523 | bootPrefix = findBootPrefix(); |
4524 | if (!bootPrefix) return 1; |
4525 | } else { |
4526 | /* this shouldn't end with a / */ |
4527 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
4528 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
4529 | } |
4530 | } else { |
4531 | bootPrefix = ""; |
4532 | } |
4533 | |
4534 | if (!cfi->mbAllowExtraInitRds && |
4535 | extraInitrdCount > 0) { |
4536 | fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig); |
4537 | return 1; |
4538 | } |
4539 | |
4540 | if (bootloaderProbe) { |
4541 | int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0; |
4542 | struct grubConfig * lconfig, * gconfig, * yconfig, * econfig; |
4543 | |
4544 | const char *grub2config = grub2FindConfig(&grub2ConfigType); |
4545 | if (grub2config) { |
4546 | gconfig = readConfig(grub2config, &grub2ConfigType); |
4547 | if (!gconfig) |
4548 | gr2c = 1; |
4549 | else |
4550 | gr2c = checkForGrub2(gconfig); |
4551 | } |
4552 | |
4553 | const char *grubconfig = grubFindConfig(&grubConfigType); |
4554 | if (!access(grubconfig, F_OK)) { |
4555 | gconfig = readConfig(grubconfig, &grubConfigType); |
4556 | if (!gconfig) |
4557 | grc = 1; |
4558 | else |
4559 | grc = checkForGrub(gconfig); |
4560 | } |
4561 | |
4562 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
4563 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); |
4564 | if (!lconfig) |
4565 | lrc = 1; |
4566 | else |
4567 | lrc = checkForLilo(lconfig); |
4568 | } |
4569 | |
4570 | if (!access(eliloConfigType.defaultConfig, F_OK)) { |
4571 | econfig = readConfig(eliloConfigType.defaultConfig, |
4572 | &eliloConfigType); |
4573 | if (!econfig) |
4574 | erc = 1; |
4575 | else |
4576 | erc = checkForElilo(econfig); |
4577 | } |
4578 | |
4579 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
4580 | lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType); |
4581 | if (!lconfig) |
4582 | extrc = 1; |
4583 | else |
4584 | extrc = checkForExtLinux(lconfig); |
4585 | } |
4586 | |
4587 | |
4588 | if (!access(yabootConfigType.defaultConfig, F_OK)) { |
4589 | yconfig = readConfig(yabootConfigType.defaultConfig, |
4590 | &yabootConfigType); |
4591 | if (!yconfig) |
4592 | yrc = 1; |
4593 | else |
4594 | yrc = checkForYaboot(yconfig); |
4595 | } |
4596 | |
4597 | if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1 || |
4598 | erc == 1) |
4599 | return 1; |
4600 | |
4601 | if (lrc == 2) printf("lilo\n"); |
4602 | if (gr2c == 2) printf("grub2\n"); |
4603 | if (grc == 2) printf("grub\n"); |
4604 | if (extrc == 2) printf("extlinux\n"); |
4605 | if (yrc == 2) printf("yaboot\n"); |
4606 | if (erc == 2) printf("elilo\n"); |
4607 | |
4608 | return 0; |
4609 | } |
4610 | |
4611 | if (grubConfig == NULL) { |
4612 | printf("Could not find bootloader configuration file.\n"); |
4613 | exit(1); |
4614 | } |
4615 | |
4616 | config = readConfig(grubConfig, cfi); |
4617 | if (!config) return 1; |
4618 | |
4619 | if (displayDefault) { |
4620 | struct singleLine * line; |
4621 | struct singleEntry * entry; |
4622 | char * rootspec; |
4623 | |
4624 | if (config->defaultImage == -1) return 0; |
4625 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
4626 | cfi->defaultIsSaved) |
4627 | config->defaultImage = 0; |
4628 | entry = findEntryByIndex(config, config->defaultImage); |
4629 | if (!entry) return 0; |
4630 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; |
4631 | |
4632 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI|LT_KERNEL_16, entry->lines); |
4633 | if (!line) return 0; |
4634 | |
4635 | rootspec = getRootSpecifier(line->elements[1].item); |
4636 | printf("%s%s\n", bootPrefix, line->elements[1].item + |
4637 | ((rootspec != NULL) ? strlen(rootspec) : 0)); |
4638 | |
4639 | return 0; |
4640 | |
4641 | } else if (displayDefaultTitle) { |
4642 | struct singleLine * line; |
4643 | struct singleEntry * entry; |
4644 | |
4645 | if (config->defaultImage == -1) return 0; |
4646 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
4647 | cfi->defaultIsSaved) |
4648 | config->defaultImage = 0; |
4649 | entry = findEntryByIndex(config, config->defaultImage); |
4650 | if (!entry) return 0; |
4651 | |
4652 | if (!configureGrub2) { |
4653 | line = getLineByType(LT_TITLE, entry->lines); |
4654 | if (!line) return 0; |
4655 | printf("%s\n", line->elements[1].item); |
4656 | |
4657 | } else { |
4658 | char * title; |
4659 | |
4660 | dbgPrintf("This is GRUB2, default title is embeded in menuentry\n"); |
4661 | line = getLineByType(LT_MENUENTRY, entry->lines); |
4662 | if (!line) return 0; |
4663 | title = grub2ExtractTitle(line); |
4664 | if (title) |
4665 | printf("%s\n", title); |
4666 | } |
4667 | return 0; |
4668 | |
4669 | } else if (displayDefaultIndex) { |
4670 | if (config->defaultImage == -1) return 0; |
4671 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
4672 | cfi->defaultIsSaved) |
4673 | config->defaultImage = 0; |
4674 | printf("%i\n", config->defaultImage); |
4675 | return 0; |
4676 | |
4677 | } else if (kernelInfo) |
4678 | return displayInfo(config, kernelInfo, bootPrefix); |
4679 | |
4680 | if (copyDefault) { |
4681 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
4682 | if (!template) return 1; |
4683 | } |
4684 | |
4685 | markRemovedImage(config, removeKernelPath, bootPrefix); |
4686 | markRemovedImage(config, removeMBKernel, bootPrefix); |
4687 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, |
4688 | bootPrefix, flags, defaultIndex); |
4689 | setFallbackImage(config, newKernelPath != NULL); |
4690 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
4691 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; |
4692 | if (updateKernelPath && newKernelInitrd) { |
4693 | if (newMBKernel) { |
4694 | if (addMBInitrd(config, newMBKernel, updateKernelPath, |
4695 | bootPrefix, newKernelInitrd, |
4696 | newKernelTitle)) |
4697 | return 1; |
4698 | } else { |
4699 | if (updateInitrd(config, updateKernelPath, bootPrefix, |
4700 | newKernelInitrd, newKernelTitle)) |
4701 | return 1; |
4702 | } |
4703 | } |
4704 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
4705 | newKernelTitle, newKernelArgs, newKernelInitrd, |
4706 | (const char **)extraInitrds, extraInitrdCount, |
4707 | newMBKernel, newMBKernelArgs, newDevTreePath)) return 1; |
4708 | |
4709 | |
4710 | if (numEntries(config) == 0) { |
4711 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " |
4712 | "Not writing out new config.\n")); |
4713 | return 1; |
4714 | } |
4715 | |
4716 | if (!outputFile) |
4717 | outputFile = (char *)grubConfig; |
4718 | |
4719 | return writeConfig(config, outputFile, bootPrefix); |
4720 | } |