Contents of /trunk/grubby/grubby.c
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Wed Jun 29 14:06:18 2016 UTC (8 years, 2 months ago) by niro
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File size: 129517 byte(s)
Wed Jun 29 14:06:18 2016 UTC (8 years, 2 months ago) by niro
File MIME type: text/plain
File size: 129517 byte(s)
grubby: fix initrd updating when multiboot exist
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 | }; |
226 | |
227 | struct keywordTypes grub2Keywords[] = { |
228 | { "menuentry", LT_MENUENTRY, ' ' }, |
229 | { "}", LT_ENTRY_END, ' ' }, |
230 | { "echo", LT_ECHO, ' ' }, |
231 | { "set", LT_SET_VARIABLE,' ', '=' }, |
232 | { "root", LT_BOOTROOT, ' ' }, |
233 | { "default", LT_DEFAULT, ' ' }, |
234 | { "fallback", LT_FALLBACK, ' ' }, |
235 | { "linux", LT_KERNEL, ' ' }, |
236 | { "linuxefi", LT_KERNEL_EFI, ' ' }, |
237 | { "linux16", LT_KERNEL_16, ' ' }, |
238 | { "initrd", LT_INITRD, ' ', ' ' }, |
239 | { "initrdefi", LT_INITRD_EFI, ' ', ' ' }, |
240 | { "initrd16", LT_INITRD_16, ' ', ' ' }, |
241 | { "module", LT_MBMODULE, ' ' }, |
242 | { "kernel", LT_HYPER, ' ' }, |
243 | { "devicetree", LT_DEVTREE, ' ' }, |
244 | { NULL, 0, 0 }, |
245 | }; |
246 | |
247 | const char *grub2FindConfig(struct configFileInfo *cfi) { |
248 | static const char *configFiles[] = { |
249 | "/boot/grub/grub-efi.cfg", |
250 | "/boot/grub/grub.cfg", |
251 | NULL |
252 | }; |
253 | static int i = -1; |
254 | static const char *grub_cfg = "/boot/grub/grub.cfg"; |
255 | int rc = -1; |
256 | |
257 | if (i == -1) { |
258 | for (i = 0; configFiles[i] != NULL; i++) { |
259 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
260 | if ((rc = access(configFiles[i], R_OK))) { |
261 | if (errno == EACCES) { |
262 | printf("Unable to access bootloader configuration file " |
263 | "\"%s\": %m\n", configFiles[i]); |
264 | exit(1); |
265 | } |
266 | continue; |
267 | } else { |
268 | dbgPrintf("found\n"); |
269 | return configFiles[i]; |
270 | } |
271 | } |
272 | } |
273 | |
274 | /* Ubuntu renames grub2 to grub, so check for the grub.d directory |
275 | * that isn't in grub1, and if it exists, return the config file path |
276 | * that they use. */ |
277 | if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) { |
278 | dbgPrintf("found\n"); |
279 | return grub_cfg; |
280 | } |
281 | |
282 | dbgPrintf("not found\n"); |
283 | return configFiles[i]; |
284 | } |
285 | |
286 | /* kind of hacky. It'll give the first 1024 bytes, ish. */ |
287 | static char *grub2GetEnv(struct configFileInfo *info, char *name) |
288 | { |
289 | static char buf[1025]; |
290 | char *s = NULL; |
291 | char *ret = NULL; |
292 | char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv"; |
293 | int rc = asprintf(&s, "grub-editenv %s list | grep '^%s='", envFile, name); |
294 | |
295 | if (rc < 0) |
296 | return NULL; |
297 | |
298 | FILE *f = popen(s, "r"); |
299 | if (!f) |
300 | goto out; |
301 | |
302 | memset(buf, '\0', sizeof (buf)); |
303 | ret = fgets(buf, 1024, f); |
304 | pclose(f); |
305 | |
306 | if (ret) { |
307 | ret += strlen(name) + 1; |
308 | ret[strlen(ret) - 1] = '\0'; |
309 | } |
310 | dbgPrintf("grub2GetEnv(%s): %s\n", name, ret); |
311 | out: |
312 | free(s); |
313 | return ret; |
314 | } |
315 | |
316 | static int sPopCount(const char *s, const char *c) |
317 | { |
318 | int ret = 0; |
319 | if (!s) |
320 | return -1; |
321 | for (int i = 0; s[i] != '\0'; i++) |
322 | for (int j = 0; c[j] != '\0'; j++) |
323 | if (s[i] == c[j]) |
324 | ret++; |
325 | return ret; |
326 | } |
327 | |
328 | static char *shellEscape(const char *s) |
329 | { |
330 | int l = strlen(s) + sPopCount(s, "'") * 2; |
331 | |
332 | char *ret = calloc(l+1, sizeof (*ret)); |
333 | if (!ret) |
334 | return NULL; |
335 | for (int i = 0, j = 0; s[i] != '\0'; i++, j++) { |
336 | if (s[i] == '\'') |
337 | ret[j++] = '\\'; |
338 | ret[j] = s[i]; |
339 | } |
340 | return ret; |
341 | } |
342 | |
343 | static void unquote(char *s) |
344 | { |
345 | int l = strlen(s); |
346 | |
347 | if ((s[l-1] == '\'' && s[0] == '\'') || (s[l-1] == '"' && s[0] == '"')) { |
348 | memmove(s, s+1, l-2); |
349 | s[l-2] = '\0'; |
350 | } |
351 | } |
352 | |
353 | static int grub2SetEnv(struct configFileInfo *info, char *name, char *value) |
354 | { |
355 | char *s = NULL; |
356 | int rc = 0; |
357 | char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv"; |
358 | |
359 | unquote(value); |
360 | value = shellEscape(value); |
361 | if (!value) |
362 | return -1; |
363 | |
364 | rc = asprintf(&s, "grub-editenv %s set '%s=%s'", envFile, name, value); |
365 | free(value); |
366 | if (rc <0) |
367 | return -1; |
368 | |
369 | dbgPrintf("grub2SetEnv(%s): %s\n", name, s); |
370 | rc = system(s); |
371 | free(s); |
372 | return rc; |
373 | } |
374 | |
375 | /* this is a gigantic hack to avoid clobbering grub2 variables... */ |
376 | static int is_special_grub2_variable(const char *name) |
377 | { |
378 | if (!strcmp(name,"\"${next_entry}\"")) |
379 | return 1; |
380 | if (!strcmp(name,"\"${prev_saved_entry}\"")) |
381 | return 1; |
382 | return 0; |
383 | } |
384 | |
385 | int sizeOfSingleLine(struct singleLine * line) { |
386 | int count = 0; |
387 | |
388 | for (int i = 0; i < line->numElements; i++) { |
389 | int indentSize = 0; |
390 | |
391 | count = count + strlen(line->elements[i].item); |
392 | |
393 | indentSize = strlen(line->elements[i].indent); |
394 | if (indentSize > 0) |
395 | count = count + indentSize; |
396 | else |
397 | /* be extra safe and add room for whitespaces */ |
398 | count = count + 1; |
399 | } |
400 | |
401 | /* room for trailing terminator */ |
402 | count = count + 1; |
403 | |
404 | return count; |
405 | } |
406 | |
407 | static int isquote(char q) |
408 | { |
409 | if (q == '\'' || q == '\"') |
410 | return 1; |
411 | return 0; |
412 | } |
413 | |
414 | static int iskernel(enum lineType_e type) { |
415 | return (type == LT_KERNEL || type == LT_KERNEL_EFI || type == LT_KERNEL_16); |
416 | } |
417 | |
418 | static int isinitrd(enum lineType_e type) { |
419 | return (type == LT_INITRD || type == LT_INITRD_EFI || type == LT_INITRD_16); |
420 | } |
421 | |
422 | char *grub2ExtractTitle(struct singleLine * line) { |
423 | char * current; |
424 | char * current_indent; |
425 | int current_len; |
426 | int current_indent_len; |
427 | int i; |
428 | |
429 | /* bail out if line does not start with menuentry */ |
430 | if (strcmp(line->elements[0].item, "menuentry")) |
431 | return NULL; |
432 | |
433 | i = 1; |
434 | current = line->elements[i].item; |
435 | current_len = strlen(current); |
436 | |
437 | /* if second word is quoted, strip the quotes and return single word */ |
438 | if (isquote(*current) && isquote(current[current_len - 1])) { |
439 | char *tmp; |
440 | |
441 | tmp = strdup(current); |
442 | *(tmp + current_len - 1) = '\0'; |
443 | return ++tmp; |
444 | } |
445 | |
446 | /* if no quotes, return second word verbatim */ |
447 | if (!isquote(*current)) |
448 | return current; |
449 | |
450 | /* second element start with a quote, so we have to find the element |
451 | * whose last character is also quote (assuming it's the closing one) */ |
452 | int resultMaxSize; |
453 | char * result; |
454 | |
455 | resultMaxSize = sizeOfSingleLine(line); |
456 | result = malloc(resultMaxSize); |
457 | snprintf(result, resultMaxSize, "%s", ++current); |
458 | |
459 | i++; |
460 | for (; i < line->numElements; ++i) { |
461 | current = line->elements[i].item; |
462 | current_len = strlen(current); |
463 | current_indent = line->elements[i].indent; |
464 | current_indent_len = strlen(current_indent); |
465 | |
466 | strncat(result, current_indent, current_indent_len); |
467 | if (!isquote(current[current_len-1])) { |
468 | strncat(result, current, current_len); |
469 | } else { |
470 | strncat(result, current, current_len - 1); |
471 | break; |
472 | } |
473 | } |
474 | return result; |
475 | } |
476 | |
477 | struct configFileInfo grub2ConfigType = { |
478 | .findConfig = grub2FindConfig, |
479 | .getEnv = grub2GetEnv, |
480 | .setEnv = grub2SetEnv, |
481 | .keywords = grub2Keywords, |
482 | .defaultIsIndex = 1, |
483 | .defaultSupportSaved = 1, |
484 | .defaultIsVariable = 1, |
485 | .entryStart = LT_MENUENTRY, |
486 | .entryEnd = LT_ENTRY_END, |
487 | .titlePosition = 1, |
488 | .needsBootPrefix = 1, |
489 | .mbHyperFirst = 1, |
490 | .mbInitRdIsModule = 1, |
491 | .mbAllowExtraInitRds = 1, |
492 | }; |
493 | |
494 | struct keywordTypes yabootKeywords[] = { |
495 | { "label", LT_TITLE, '=' }, |
496 | { "root", LT_ROOT, '=' }, |
497 | { "default", LT_DEFAULT, '=' }, |
498 | { "image", LT_KERNEL, '=' }, |
499 | { "bsd", LT_GENERIC, '=' }, |
500 | { "macos", LT_GENERIC, '=' }, |
501 | { "macosx", LT_GENERIC, '=' }, |
502 | { "magicboot", LT_GENERIC, '=' }, |
503 | { "darwin", LT_GENERIC, '=' }, |
504 | { "timeout", LT_GENERIC, '=' }, |
505 | { "install", LT_GENERIC, '=' }, |
506 | { "fstype", LT_GENERIC, '=' }, |
507 | { "hfstype", LT_GENERIC, '=' }, |
508 | { "delay", LT_GENERIC, '=' }, |
509 | { "defaultos", LT_GENERIC, '=' }, |
510 | { "init-message", LT_GENERIC, '=' }, |
511 | { "enablecdboot", LT_GENERIC, ' ' }, |
512 | { "enableofboot", LT_GENERIC, ' ' }, |
513 | { "enablenetboot", LT_GENERIC, ' ' }, |
514 | { "nonvram", LT_GENERIC, ' ' }, |
515 | { "hide", LT_GENERIC, ' ' }, |
516 | { "protect", LT_GENERIC, ' ' }, |
517 | { "nobless", LT_GENERIC, ' ' }, |
518 | { "nonvram", LT_GENERIC, ' ' }, |
519 | { "brokenosx", LT_GENERIC, ' ' }, |
520 | { "usemount", LT_GENERIC, ' ' }, |
521 | { "mntpoint", LT_GENERIC, '=' }, |
522 | { "partition", LT_GENERIC, '=' }, |
523 | { "device", LT_GENERIC, '=' }, |
524 | { "fstype", LT_GENERIC, '=' }, |
525 | { "initrd", LT_INITRD, '=', ';' }, |
526 | { "append", LT_KERNELARGS, '=' }, |
527 | { "boot", LT_BOOT, '=' }, |
528 | { "lba", LT_LBA, ' ' }, |
529 | { NULL, 0, 0 }, |
530 | }; |
531 | |
532 | struct keywordTypes liloKeywords[] = { |
533 | { "label", LT_TITLE, '=' }, |
534 | { "root", LT_ROOT, '=' }, |
535 | { "default", LT_DEFAULT, '=' }, |
536 | { "image", LT_KERNEL, '=' }, |
537 | { "other", LT_OTHER, '=' }, |
538 | { "initrd", LT_INITRD, '=' }, |
539 | { "append", LT_KERNELARGS, '=' }, |
540 | { "boot", LT_BOOT, '=' }, |
541 | { "lba", LT_LBA, ' ' }, |
542 | { NULL, 0, 0 }, |
543 | }; |
544 | |
545 | struct keywordTypes eliloKeywords[] = { |
546 | { "label", LT_TITLE, '=' }, |
547 | { "root", LT_ROOT, '=' }, |
548 | { "default", LT_DEFAULT, '=' }, |
549 | { "image", LT_KERNEL, '=' }, |
550 | { "initrd", LT_INITRD, '=' }, |
551 | { "append", LT_KERNELARGS, '=' }, |
552 | { "vmm", LT_HYPER, '=' }, |
553 | { NULL, 0, 0 }, |
554 | }; |
555 | |
556 | struct keywordTypes siloKeywords[] = { |
557 | { "label", LT_TITLE, '=' }, |
558 | { "root", LT_ROOT, '=' }, |
559 | { "default", LT_DEFAULT, '=' }, |
560 | { "image", LT_KERNEL, '=' }, |
561 | { "other", LT_OTHER, '=' }, |
562 | { "initrd", LT_INITRD, '=' }, |
563 | { "append", LT_KERNELARGS, '=' }, |
564 | { "boot", LT_BOOT, '=' }, |
565 | { NULL, 0, 0 }, |
566 | }; |
567 | |
568 | struct keywordTypes ziplKeywords[] = { |
569 | { "target", LT_BOOTROOT, '=' }, |
570 | { "image", LT_KERNEL, '=' }, |
571 | { "ramdisk", LT_INITRD, '=' }, |
572 | { "parameters", LT_KERNELARGS, '=' }, |
573 | { "default", LT_DEFAULT, '=' }, |
574 | { NULL, 0, 0 }, |
575 | }; |
576 | |
577 | struct keywordTypes extlinuxKeywords[] = { |
578 | { "label", LT_TITLE, ' ' }, |
579 | { "root", LT_ROOT, ' ' }, |
580 | { "default", LT_DEFAULT, ' ' }, |
581 | { "kernel", LT_KERNEL, ' ' }, |
582 | { "initrd", LT_INITRD, ' ', ',' }, |
583 | { "append", LT_KERNELARGS, ' ' }, |
584 | { "prompt", LT_UNKNOWN, ' ' }, |
585 | { NULL, 0, 0 }, |
586 | }; |
587 | int useextlinuxmenu; |
588 | struct configFileInfo eliloConfigType = { |
589 | .defaultConfig = "/boot/efi/EFI/redhat/elilo.conf", |
590 | .keywords = eliloKeywords, |
591 | .entryStart = LT_KERNEL, |
592 | .needsBootPrefix = 1, |
593 | .argsInQuotes = 1, |
594 | .mbConcatArgs = 1, |
595 | }; |
596 | |
597 | struct configFileInfo liloConfigType = { |
598 | .defaultConfig = "/etc/lilo.conf", |
599 | .keywords = liloKeywords, |
600 | .entryStart = LT_KERNEL, |
601 | .argsInQuotes = 1, |
602 | .maxTitleLength = 15, |
603 | }; |
604 | |
605 | struct configFileInfo yabootConfigType = { |
606 | .defaultConfig = "/etc/yaboot.conf", |
607 | .keywords = yabootKeywords, |
608 | .entryStart = LT_KERNEL, |
609 | .needsBootPrefix = 1, |
610 | .argsInQuotes = 1, |
611 | .maxTitleLength = 15, |
612 | .mbAllowExtraInitRds = 1, |
613 | }; |
614 | |
615 | struct configFileInfo siloConfigType = { |
616 | .defaultConfig = "/etc/silo.conf", |
617 | .keywords = siloKeywords, |
618 | .entryStart = LT_KERNEL, |
619 | .needsBootPrefix = 1, |
620 | .argsInQuotes = 1, |
621 | .maxTitleLength = 15, |
622 | }; |
623 | |
624 | struct configFileInfo ziplConfigType = { |
625 | .defaultConfig = "/etc/zipl.conf", |
626 | .keywords = ziplKeywords, |
627 | .entryStart = LT_TITLE, |
628 | .argsInQuotes = 1, |
629 | .titleBracketed = 1, |
630 | }; |
631 | |
632 | struct configFileInfo extlinuxConfigType = { |
633 | .defaultConfig = "/boot/extlinux/extlinux.conf", |
634 | .keywords = extlinuxKeywords, |
635 | .caseInsensitive = 1, |
636 | .entryStart = LT_TITLE, |
637 | .needsBootPrefix = 1, |
638 | .maxTitleLength = 255, |
639 | .mbAllowExtraInitRds = 1, |
640 | .defaultIsUnquoted = 1, |
641 | }; |
642 | |
643 | struct grubConfig { |
644 | struct singleLine * theLines; |
645 | struct singleEntry * entries; |
646 | char * primaryIndent; |
647 | char * secondaryIndent; |
648 | int defaultImage; /* -1 if none specified -- this value is |
649 | * written out, overriding original */ |
650 | int fallbackImage; /* just like defaultImage */ |
651 | int flags; |
652 | struct configFileInfo * cfi; |
653 | }; |
654 | |
655 | blkid_cache blkid; |
656 | |
657 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); |
658 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, |
659 | const char * path, const char * prefix, |
660 | int * index); |
661 | struct singleEntry * findEntryByTitle(struct grubConfig * cfg, char *title, |
662 | int * index); |
663 | static int readFile(int fd, char ** bufPtr); |
664 | static void lineInit(struct singleLine * line); |
665 | struct singleLine * lineDup(struct singleLine * line); |
666 | static void lineFree(struct singleLine * line); |
667 | static int lineWrite(FILE * out, struct singleLine * line, |
668 | struct configFileInfo * cfi); |
669 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
670 | struct configFileInfo * cfi); |
671 | static char * getRootSpecifier(char * str); |
672 | static void requote(struct singleLine *line, struct configFileInfo * cfi); |
673 | static void insertElement(struct singleLine * line, |
674 | const char * item, int insertHere, |
675 | struct configFileInfo * cfi); |
676 | static void removeElement(struct singleLine * line, int removeHere); |
677 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
678 | struct configFileInfo * cfi); |
679 | static enum lineType_e getTypeByKeyword(char * keyword, |
680 | struct configFileInfo * cfi); |
681 | static struct singleLine * getLineByType(enum lineType_e type, |
682 | struct singleLine * line); |
683 | static int checkForExtLinux(struct grubConfig * config); |
684 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
685 | struct singleLine * tmplLine, |
686 | struct singleLine * prevLine, |
687 | const char * val, |
688 | struct configFileInfo * cfi); |
689 | struct singleLine * addLine(struct singleEntry * entry, |
690 | struct configFileInfo * cfi, |
691 | enum lineType_e type, char * defaultIndent, |
692 | const char * val); |
693 | |
694 | static char * sdupprintf(const char *format, ...) |
695 | #ifdef __GNUC__ |
696 | __attribute__ ((format (printf, 1, 2))); |
697 | #else |
698 | ; |
699 | #endif |
700 | |
701 | static char * sdupprintf(const char *format, ...) { |
702 | char *buf = NULL; |
703 | char c; |
704 | va_list args; |
705 | size_t size = 0; |
706 | va_start(args, format); |
707 | |
708 | /* XXX requires C99 vsnprintf behavior */ |
709 | size = vsnprintf(&c, 1, format, args) + 1; |
710 | if (size == -1) { |
711 | printf("ERROR: vsnprintf behavior is not C99\n"); |
712 | abort(); |
713 | } |
714 | |
715 | va_end(args); |
716 | va_start(args, format); |
717 | |
718 | buf = malloc(size); |
719 | if (buf == NULL) |
720 | return NULL; |
721 | vsnprintf(buf, size, format, args); |
722 | va_end (args); |
723 | |
724 | return buf; |
725 | } |
726 | |
727 | static enum lineType_e preferredLineType(enum lineType_e type, |
728 | struct configFileInfo *cfi) { |
729 | if (isEfi && cfi == &grub2ConfigType) { |
730 | switch (type) { |
731 | case LT_KERNEL: |
732 | return isEfiOnly ? LT_KERNEL : LT_KERNEL_EFI; |
733 | case LT_INITRD: |
734 | return isEfiOnly ? LT_INITRD : LT_INITRD_EFI; |
735 | default: |
736 | return type; |
737 | } |
738 | #if defined(__i386__) || defined(__x86_64__) |
739 | } else if (cfi == &grub2ConfigType) { |
740 | switch (type) { |
741 | case LT_KERNEL: |
742 | return LT_KERNEL_16; |
743 | case LT_INITRD: |
744 | return LT_INITRD_16; |
745 | default: |
746 | return type; |
747 | } |
748 | #endif |
749 | } |
750 | return type; |
751 | } |
752 | |
753 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
754 | struct configFileInfo * cfi) { |
755 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
756 | if (kw->type == type) |
757 | return kw; |
758 | } |
759 | return NULL; |
760 | } |
761 | |
762 | static char *getKeyByType(enum lineType_e type, struct configFileInfo * cfi) { |
763 | struct keywordTypes *kt = getKeywordByType(type, cfi); |
764 | if (kt) |
765 | return kt->key; |
766 | return "unknown"; |
767 | } |
768 | |
769 | static char * getpathbyspec(char *device) { |
770 | if (!blkid) |
771 | blkid_get_cache(&blkid, NULL); |
772 | |
773 | return blkid_get_devname(blkid, device, NULL); |
774 | } |
775 | |
776 | static char * getuuidbydev(char *device) { |
777 | if (!blkid) |
778 | blkid_get_cache(&blkid, NULL); |
779 | |
780 | return blkid_get_tag_value(blkid, "UUID", device); |
781 | } |
782 | |
783 | static enum lineType_e getTypeByKeyword(char * keyword, |
784 | struct configFileInfo * cfi) { |
785 | for (struct keywordTypes *kw = cfi->keywords; kw->key; kw++) { |
786 | if (cfi->caseInsensitive) { |
787 | if (!strcasecmp(keyword, kw->key)) |
788 | return kw->type; |
789 | } else { |
790 | if (!strcmp(keyword, kw->key)) |
791 | return kw->type; |
792 | } |
793 | } |
794 | return LT_UNKNOWN; |
795 | } |
796 | |
797 | static struct singleLine * getLineByType(enum lineType_e type, |
798 | struct singleLine * line) { |
799 | dbgPrintf("getLineByType(%d): ", type); |
800 | for (; line; line = line->next) { |
801 | dbgPrintf("%d:%s ", line->type, |
802 | line->numElements ? line->elements[0].item : "(empty)"); |
803 | if (line->type & type) break; |
804 | } |
805 | dbgPrintf(line ? "\n" : " (failed)\n"); |
806 | return line; |
807 | } |
808 | |
809 | static int isBracketedTitle(struct singleLine * line) { |
810 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
811 | int len = strlen(line->elements[0].item); |
812 | if (*(line->elements[0].item + len - 1) == ']') { |
813 | /* FIXME: this is a hack... */ |
814 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
815 | return 1; |
816 | } |
817 | } |
818 | } |
819 | return 0; |
820 | } |
821 | |
822 | static int isEntryStart(struct singleLine * line, |
823 | struct configFileInfo * cfi) { |
824 | return line->type == cfi->entryStart || line->type == LT_OTHER || |
825 | (cfi->titleBracketed && isBracketedTitle(line)); |
826 | } |
827 | |
828 | /* extract the title from within brackets (for zipl) */ |
829 | static char * extractTitle(struct singleLine * line) { |
830 | /* bracketed title... let's extract it (leaks a byte) */ |
831 | char * title = NULL; |
832 | if (line->type == LT_TITLE) { |
833 | title = strdup(line->elements[0].item); |
834 | title++; |
835 | *(title + strlen(title) - 1) = '\0'; |
836 | } else if (line->type == LT_MENUENTRY) |
837 | title = strdup(line->elements[1].item); |
838 | else |
839 | return NULL; |
840 | return title; |
841 | } |
842 | |
843 | static int readFile(int fd, char ** bufPtr) { |
844 | int alloced = 0, size = 0, i = 0; |
845 | char * buf = NULL; |
846 | |
847 | do { |
848 | size += i; |
849 | if ((size + 1024) > alloced) { |
850 | alloced += 4096; |
851 | buf = realloc(buf, alloced + 1); |
852 | } |
853 | } while ((i = read(fd, buf + size, 1024)) > 0); |
854 | |
855 | if (i < 0) { |
856 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); |
857 | free(buf); |
858 | return 1; |
859 | } |
860 | |
861 | buf = realloc(buf, size + 2); |
862 | if (size == 0) |
863 | buf[size++] = '\n'; |
864 | else |
865 | if (buf[size - 1] != '\n') |
866 | buf[size++] = '\n'; |
867 | buf[size] = '\0'; |
868 | |
869 | *bufPtr = buf; |
870 | |
871 | return 0; |
872 | } |
873 | |
874 | static void lineInit(struct singleLine * line) { |
875 | line->indent = NULL; |
876 | line->elements = NULL; |
877 | line->numElements = 0; |
878 | line->next = NULL; |
879 | } |
880 | |
881 | struct singleLine * lineDup(struct singleLine * line) { |
882 | struct singleLine * newLine = malloc(sizeof(*newLine)); |
883 | |
884 | newLine->indent = strdup(line->indent); |
885 | newLine->next = NULL; |
886 | newLine->type = line->type; |
887 | newLine->numElements = line->numElements; |
888 | newLine->elements = malloc(sizeof(*newLine->elements) * |
889 | newLine->numElements); |
890 | |
891 | for (int i = 0; i < newLine->numElements; i++) { |
892 | newLine->elements[i].indent = strdup(line->elements[i].indent); |
893 | newLine->elements[i].item = strdup(line->elements[i].item); |
894 | } |
895 | |
896 | return newLine; |
897 | } |
898 | |
899 | static void lineFree(struct singleLine * line) { |
900 | if (line->indent) free(line->indent); |
901 | |
902 | for (int i = 0; i < line->numElements; i++) { |
903 | free(line->elements[i].item); |
904 | free(line->elements[i].indent); |
905 | } |
906 | |
907 | if (line->elements) free(line->elements); |
908 | lineInit(line); |
909 | } |
910 | |
911 | static int lineWrite(FILE * out, struct singleLine * line, |
912 | struct configFileInfo * cfi) { |
913 | if (fprintf(out, "%s", line->indent) == -1) return -1; |
914 | |
915 | for (int i = 0; i < line->numElements; i++) { |
916 | /* Need to handle this, because we strip the quotes from |
917 | * menuentry when read it. */ |
918 | if (line->type == LT_MENUENTRY && i == 1) { |
919 | if(!isquote(*line->elements[i].item)) |
920 | fprintf(out, "\'%s\'", line->elements[i].item); |
921 | else |
922 | fprintf(out, "%s", line->elements[i].item); |
923 | fprintf(out, "%s", line->elements[i].indent); |
924 | |
925 | continue; |
926 | } |
927 | |
928 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
929 | if (fputc('"', out) == EOF) return -1; |
930 | |
931 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; |
932 | if (i < line->numElements - 1) |
933 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; |
934 | } |
935 | |
936 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
937 | if (fputc('"', out) == EOF) return -1; |
938 | |
939 | if (fprintf(out, "\n") == -1) return -1; |
940 | |
941 | return 0; |
942 | } |
943 | |
944 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
945 | static int getNextLine(char ** bufPtr, struct singleLine * line, |
946 | struct configFileInfo * cfi) { |
947 | char * end; |
948 | char * start = *bufPtr; |
949 | char * chptr; |
950 | int elementsAlloced = 0; |
951 | struct lineElement * element; |
952 | int first = 1; |
953 | |
954 | lineFree(line); |
955 | |
956 | end = strchr(start, '\n'); |
957 | *end = '\0'; |
958 | *bufPtr = end + 1; |
959 | |
960 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
961 | |
962 | line->indent = strndup(start, chptr - start); |
963 | start = chptr; |
964 | |
965 | while (start < end) { |
966 | /* we know !isspace(*start) */ |
967 | |
968 | if (elementsAlloced == line->numElements) { |
969 | elementsAlloced += 5; |
970 | line->elements = realloc(line->elements, |
971 | sizeof(*line->elements) * elementsAlloced); |
972 | } |
973 | |
974 | element = line->elements + line->numElements; |
975 | |
976 | chptr = start; |
977 | while (*chptr && !isspace(*chptr)) { |
978 | if (first && *chptr == '=') break; |
979 | chptr++; |
980 | } |
981 | element->item = strndup(start, chptr - start); |
982 | start = chptr; |
983 | |
984 | /* lilo actually accepts the pathological case of append = " foo " */ |
985 | if (*start == '=') |
986 | chptr = start + 1; |
987 | else |
988 | chptr = start; |
989 | |
990 | do { |
991 | for (; *chptr && isspace(*chptr); chptr++); |
992 | if (*chptr == '=') |
993 | chptr = chptr + 1; |
994 | } while (isspace(*chptr)); |
995 | |
996 | element->indent = strndup(start, chptr - start); |
997 | start = chptr; |
998 | |
999 | line->numElements++; |
1000 | first = 0; |
1001 | } |
1002 | |
1003 | if (!line->numElements) |
1004 | line->type = LT_WHITESPACE; |
1005 | else { |
1006 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
1007 | if (line->type == LT_UNKNOWN) { |
1008 | /* zipl does [title] instead of something reasonable like all |
1009 | * the other boot loaders. kind of ugly */ |
1010 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
1011 | line->type = LT_TITLE; |
1012 | } |
1013 | |
1014 | /* this is awkward, but we need to be able to handle keywords |
1015 | that begin with a # (specifically for #boot in grub.conf), |
1016 | but still make comments lines with no elements (everything |
1017 | stored in the indent */ |
1018 | if (*line->elements[0].item == '#') { |
1019 | char * fullLine; |
1020 | int len; |
1021 | |
1022 | len = strlen(line->indent); |
1023 | for (int i = 0; i < line->numElements; i++) |
1024 | len += strlen(line->elements[i].item) + |
1025 | strlen(line->elements[i].indent); |
1026 | |
1027 | fullLine = malloc(len + 1); |
1028 | strcpy(fullLine, line->indent); |
1029 | free(line->indent); |
1030 | line->indent = fullLine; |
1031 | |
1032 | for (int i = 0; i < line->numElements; i++) { |
1033 | strcat(fullLine, line->elements[i].item); |
1034 | strcat(fullLine, line->elements[i].indent); |
1035 | free(line->elements[i].item); |
1036 | free(line->elements[i].indent); |
1037 | } |
1038 | |
1039 | line->type = LT_WHITESPACE; |
1040 | line->numElements = 0; |
1041 | } |
1042 | } else { |
1043 | struct keywordTypes *kw; |
1044 | |
1045 | kw = getKeywordByType(line->type, cfi); |
1046 | |
1047 | /* space isn't the only separator, we need to split |
1048 | * elements up more |
1049 | */ |
1050 | if (!isspace(kw->separatorChar)) { |
1051 | char indent[2] = ""; |
1052 | indent[0] = kw->separatorChar; |
1053 | for (int i = 1; i < line->numElements; i++) { |
1054 | char *p; |
1055 | int numNewElements; |
1056 | |
1057 | numNewElements = 0; |
1058 | p = line->elements[i].item; |
1059 | while (*p != '\0') { |
1060 | if (*p == kw->separatorChar) |
1061 | numNewElements++; |
1062 | p++; |
1063 | } |
1064 | if (line->numElements + numNewElements >= elementsAlloced) { |
1065 | elementsAlloced += numNewElements + 5; |
1066 | line->elements = realloc(line->elements, |
1067 | sizeof(*line->elements) * elementsAlloced); |
1068 | } |
1069 | |
1070 | for (int j = line->numElements; j > i; j--) { |
1071 | line->elements[j + numNewElements] = line->elements[j]; |
1072 | } |
1073 | line->numElements += numNewElements; |
1074 | |
1075 | p = line->elements[i].item; |
1076 | while (*p != '\0') { |
1077 | |
1078 | while (*p != kw->separatorChar && *p != '\0') p++; |
1079 | if (*p == '\0') { |
1080 | break; |
1081 | } |
1082 | |
1083 | line->elements[i + 1].indent = line->elements[i].indent; |
1084 | line->elements[i].indent = strdup(indent); |
1085 | *p++ = '\0'; |
1086 | i++; |
1087 | line->elements[i].item = strdup(p); |
1088 | } |
1089 | } |
1090 | } |
1091 | } |
1092 | } |
1093 | |
1094 | return 0; |
1095 | } |
1096 | |
1097 | static int isnumber(const char *s) |
1098 | { |
1099 | int i; |
1100 | for (i = 0; s[i] != '\0'; i++) |
1101 | if (s[i] < '0' || s[i] > '9') |
1102 | return 0; |
1103 | return i; |
1104 | } |
1105 | |
1106 | static struct grubConfig * readConfig(const char * inName, |
1107 | struct configFileInfo * cfi) { |
1108 | int in; |
1109 | char * incoming = NULL, * head; |
1110 | int rc; |
1111 | int sawEntry = 0; |
1112 | int movedLine = 0; |
1113 | struct grubConfig * cfg; |
1114 | struct singleLine * last = NULL, * line, * defaultLine = NULL; |
1115 | char * end; |
1116 | struct singleEntry * entry = NULL; |
1117 | int len; |
1118 | char * buf; |
1119 | |
1120 | if (inName == NULL) { |
1121 | printf("Could not find bootloader configuration\n"); |
1122 | exit(1); |
1123 | } else if (!strcmp(inName, "-")) { |
1124 | in = 0; |
1125 | } else { |
1126 | if ((in = open(inName, O_RDONLY)) < 0) { |
1127 | fprintf(stderr, _("error opening %s for read: %s\n"), |
1128 | inName, strerror(errno)); |
1129 | return NULL; |
1130 | } |
1131 | } |
1132 | |
1133 | rc = readFile(in, &incoming); |
1134 | close(in); |
1135 | if (rc) return NULL; |
1136 | |
1137 | head = incoming; |
1138 | cfg = malloc(sizeof(*cfg)); |
1139 | cfg->primaryIndent = strdup(""); |
1140 | cfg->secondaryIndent = strdup("\t"); |
1141 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
1142 | cfg->cfi = cfi; |
1143 | cfg->theLines = NULL; |
1144 | cfg->entries = NULL; |
1145 | cfg->fallbackImage = 0; |
1146 | |
1147 | /* copy everything we have */ |
1148 | while (*head) { |
1149 | line = malloc(sizeof(*line)); |
1150 | lineInit(line); |
1151 | |
1152 | if (getNextLine(&head, line, cfi)) { |
1153 | free(line); |
1154 | /* XXX memory leak of everything in cfg */ |
1155 | return NULL; |
1156 | } |
1157 | |
1158 | if (!sawEntry && line->numElements) { |
1159 | free(cfg->primaryIndent); |
1160 | cfg->primaryIndent = strdup(line->indent); |
1161 | } else if (line->numElements) { |
1162 | free(cfg->secondaryIndent); |
1163 | cfg->secondaryIndent = strdup(line->indent); |
1164 | } |
1165 | |
1166 | if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) { |
1167 | sawEntry = 1; |
1168 | if (!entry) { |
1169 | cfg->entries = malloc(sizeof(*entry)); |
1170 | entry = cfg->entries; |
1171 | } else { |
1172 | entry->next = malloc(sizeof(*entry)); |
1173 | entry = entry->next; |
1174 | } |
1175 | |
1176 | entry->skip = 0; |
1177 | entry->multiboot = 0; |
1178 | entry->lines = NULL; |
1179 | entry->next = NULL; |
1180 | } |
1181 | |
1182 | if (line->type == LT_SET_VARIABLE) { |
1183 | dbgPrintf("found 'set' command (%d elements): ", line->numElements); |
1184 | dbgPrintf("%s", line->indent); |
1185 | for (int i = 0; i < line->numElements; i++) |
1186 | dbgPrintf("\"%s\"%s", line->elements[i].item, line->elements[i].indent); |
1187 | dbgPrintf("\n"); |
1188 | struct keywordTypes *kwType = getKeywordByType(LT_DEFAULT, cfi); |
1189 | if (kwType && line->numElements == 3 && |
1190 | !strcmp(line->elements[1].item, kwType->key) && |
1191 | !is_special_grub2_variable(line->elements[2].item)) { |
1192 | dbgPrintf("Line sets default config\n"); |
1193 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1194 | defaultLine = line; |
1195 | } |
1196 | |
1197 | } else if (iskernel(line->type)) { |
1198 | /* if by some freak chance this is multiboot and the "module" |
1199 | * lines came earlier in the template, make sure to use LT_HYPER |
1200 | * instead of LT_KERNEL now |
1201 | */ |
1202 | if (entry && entry->multiboot) |
1203 | line->type = LT_HYPER; |
1204 | |
1205 | } else if (line->type == LT_MBMODULE) { |
1206 | /* go back and fix the LT_KERNEL line to indicate LT_HYPER |
1207 | * instead, now that we know this is a multiboot entry. |
1208 | * This only applies to grub, but that's the only place we |
1209 | * should find LT_MBMODULE lines anyway. |
1210 | */ |
1211 | for (struct singleLine *l = entry->lines; l; l = l->next) { |
1212 | if (l->type == LT_HYPER) |
1213 | break; |
1214 | else if (iskernel(l->type)) { |
1215 | l->type = LT_HYPER; |
1216 | break; |
1217 | } |
1218 | } |
1219 | entry->multiboot = 1; |
1220 | |
1221 | } else if (line->type == LT_HYPER) { |
1222 | entry->multiboot = 1; |
1223 | |
1224 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
1225 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); |
1226 | if (*end) cfg->fallbackImage = -1; |
1227 | |
1228 | } else if ((line->type == LT_DEFAULT && cfi->defaultIsUnquoted) || |
1229 | (line->type == LT_TITLE && line->numElements > 1)) { |
1230 | /* make the title/default a single argument (undoing our parsing) */ |
1231 | len = 0; |
1232 | for (int i = 1; i < line->numElements; i++) { |
1233 | len += strlen(line->elements[i].item); |
1234 | len += strlen(line->elements[i].indent); |
1235 | } |
1236 | buf = malloc(len + 1); |
1237 | *buf = '\0'; |
1238 | |
1239 | for (int i = 1; i < line->numElements; i++) { |
1240 | strcat(buf, line->elements[i].item); |
1241 | free(line->elements[i].item); |
1242 | |
1243 | if ((i + 1) != line->numElements) { |
1244 | strcat(buf, line->elements[i].indent); |
1245 | free(line->elements[i].indent); |
1246 | } |
1247 | } |
1248 | |
1249 | line->elements[1].indent = |
1250 | line->elements[line->numElements - 1].indent; |
1251 | line->elements[1].item = buf; |
1252 | line->numElements = 2; |
1253 | } else if (line->type == LT_MENUENTRY && line->numElements > 3) { |
1254 | /* let --remove-kernel="TITLE=what" work */ |
1255 | len = 0; |
1256 | char *extras; |
1257 | char *title; |
1258 | |
1259 | for (int i = 1; i < line->numElements; i++) { |
1260 | len += strlen(line->elements[i].item); |
1261 | len += strlen(line->elements[i].indent); |
1262 | } |
1263 | buf = malloc(len + 1); |
1264 | *buf = '\0'; |
1265 | |
1266 | /* allocate mem for extra flags. */ |
1267 | extras = malloc(len + 1); |
1268 | *extras = '\0'; |
1269 | |
1270 | /* get title. */ |
1271 | for (int i = 0; i < line->numElements; i++) { |
1272 | if (!strcmp(line->elements[i].item, "menuentry")) |
1273 | continue; |
1274 | if (isquote(*line->elements[i].item)) |
1275 | title = line->elements[i].item + 1; |
1276 | else |
1277 | title = line->elements[i].item; |
1278 | |
1279 | len = strlen(title); |
1280 | if (isquote(title[len-1])) { |
1281 | strncat(buf, title,len-1); |
1282 | break; |
1283 | } else { |
1284 | strcat(buf, title); |
1285 | strcat(buf, line->elements[i].indent); |
1286 | } |
1287 | } |
1288 | |
1289 | /* get extras */ |
1290 | int count = 0; |
1291 | for (int i = 0; i < line->numElements; i++) { |
1292 | if (count >= 2) { |
1293 | strcat(extras, line->elements[i].item); |
1294 | strcat(extras, line->elements[i].indent); |
1295 | } |
1296 | |
1297 | if (!strcmp(line->elements[i].item, "menuentry")) |
1298 | continue; |
1299 | |
1300 | /* count ' or ", there should be two in menuentry line. */ |
1301 | if (isquote(*line->elements[i].item)) |
1302 | count++; |
1303 | |
1304 | len = strlen(line->elements[i].item); |
1305 | |
1306 | if (isquote(line->elements[i].item[len -1])) |
1307 | count++; |
1308 | |
1309 | /* ok, we get the final ' or ", others are extras. */ |
1310 | } |
1311 | line->elements[1].indent = |
1312 | line->elements[line->numElements - 2].indent; |
1313 | line->elements[1].item = buf; |
1314 | line->elements[2].indent = |
1315 | line->elements[line->numElements - 2].indent; |
1316 | line->elements[2].item = extras; |
1317 | line->numElements = 3; |
1318 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
1319 | /* Strip off any " which may be present; they'll be put back |
1320 | on write. This is one of the few (the only?) places that grubby |
1321 | canonicalizes the output */ |
1322 | |
1323 | if (line->numElements >= 2) { |
1324 | int last, len; |
1325 | |
1326 | if (isquote(*line->elements[1].item)) |
1327 | memmove(line->elements[1].item, line->elements[1].item + 1, |
1328 | strlen(line->elements[1].item + 1) + 1); |
1329 | |
1330 | last = line->numElements - 1; |
1331 | len = strlen(line->elements[last].item) - 1; |
1332 | if (isquote(line->elements[last].item[len])) |
1333 | line->elements[last].item[len] = '\0'; |
1334 | } |
1335 | } |
1336 | |
1337 | if (line->type == LT_DEFAULT && line->numElements == 2) { |
1338 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1339 | defaultLine = line; |
1340 | } |
1341 | |
1342 | /* If we find a generic config option which should live at the |
1343 | top of the file, move it there. Old versions of grubby were |
1344 | probably responsible for putting new images in the wrong |
1345 | place in front of it anyway. */ |
1346 | if (sawEntry && line->type == LT_GENERIC) { |
1347 | struct singleLine **l = &cfg->theLines; |
1348 | struct singleLine **last_nonws = &cfg->theLines; |
1349 | while (*l) { |
1350 | if ((*l)->type != LT_WHITESPACE) |
1351 | last_nonws = &((*l)->next); |
1352 | l = &((*l)->next); |
1353 | } |
1354 | line->next = *last_nonws; |
1355 | *last_nonws = line; |
1356 | movedLine = 1; |
1357 | continue; /* without setting 'last' */ |
1358 | } |
1359 | |
1360 | /* If a second line of whitespace happens after a generic option |
1361 | which was moved, drop it. */ |
1362 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { |
1363 | lineFree(line); |
1364 | free(line); |
1365 | movedLine = 0; |
1366 | continue; |
1367 | } |
1368 | movedLine = 0; |
1369 | |
1370 | if (sawEntry) { |
1371 | if (!entry->lines) |
1372 | entry->lines = line; |
1373 | else |
1374 | last->next = line; |
1375 | dbgPrintf("readConfig added %s to %p\n", getKeyByType(line->type, cfi), entry); |
1376 | |
1377 | /* we could have seen this outside of an entry... if so, we |
1378 | * ignore it like any other line we don't grok */ |
1379 | if (line->type == LT_ENTRY_END && sawEntry) |
1380 | sawEntry = 0; |
1381 | } else { |
1382 | if (!cfg->theLines) |
1383 | cfg->theLines = line; |
1384 | else |
1385 | last->next = line; |
1386 | dbgPrintf("readConfig added %s to cfg\n", getKeyByType(line->type, cfi)); |
1387 | } |
1388 | |
1389 | last = line; |
1390 | } |
1391 | |
1392 | free(incoming); |
1393 | |
1394 | dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset"); |
1395 | if (defaultLine) { |
1396 | if (defaultLine->numElements > 2 && |
1397 | cfi->defaultSupportSaved && |
1398 | !strncmp(defaultLine->elements[2].item,"\"${saved_entry}\"", 16)) { |
1399 | cfg->cfi->defaultIsSaved = 1; |
1400 | cfg->defaultImage = DEFAULT_SAVED_GRUB2; |
1401 | if (cfg->cfi->getEnv) { |
1402 | char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry"); |
1403 | if (defTitle) { |
1404 | int index = 0; |
1405 | if (isnumber(defTitle)) { |
1406 | index = atoi(defTitle); |
1407 | entry = findEntryByIndex(cfg, index); |
1408 | } else { |
1409 | entry = findEntryByTitle(cfg, defTitle, &index); |
1410 | } |
1411 | if (entry) |
1412 | cfg->defaultImage = index; |
1413 | } |
1414 | } |
1415 | } else if (cfi->defaultIsVariable) { |
1416 | char *value = defaultLine->elements[2].item; |
1417 | while (*value && (*value == '"' || *value == '\'' || |
1418 | *value == ' ' || *value == '\t')) |
1419 | value++; |
1420 | cfg->defaultImage = strtol(value, &end, 10); |
1421 | while (*end && (*end == '"' || *end == '\'' || |
1422 | *end == ' ' || *end == '\t')) |
1423 | end++; |
1424 | if (*end) cfg->defaultImage = -1; |
1425 | } else if (cfi->defaultSupportSaved && |
1426 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { |
1427 | cfg->defaultImage = DEFAULT_SAVED; |
1428 | } else if (cfi->defaultIsIndex) { |
1429 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); |
1430 | if (*end) cfg->defaultImage = -1; |
1431 | } else if (defaultLine->numElements >= 2) { |
1432 | int i = 0; |
1433 | while ((entry = findEntryByIndex(cfg, i))) { |
1434 | for (line = entry->lines; line; line = line->next) |
1435 | if (line->type == LT_TITLE) break; |
1436 | |
1437 | if (!cfi->titleBracketed) { |
1438 | if (line && (line->numElements >= 2) && |
1439 | !strcmp(defaultLine->elements[1].item, |
1440 | line->elements[1].item)) break; |
1441 | } else if (line) { |
1442 | if (!strcmp(defaultLine->elements[1].item, |
1443 | extractTitle(line))) break; |
1444 | } |
1445 | i++; |
1446 | entry = NULL; |
1447 | } |
1448 | |
1449 | if (entry){ |
1450 | cfg->defaultImage = i; |
1451 | }else{ |
1452 | cfg->defaultImage = -1; |
1453 | } |
1454 | } |
1455 | } else if (cfg->cfi->defaultIsSaved && cfg->cfi->getEnv) { |
1456 | char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry"); |
1457 | if (defTitle) { |
1458 | int index = 0; |
1459 | if (isnumber(defTitle)) { |
1460 | index = atoi(defTitle); |
1461 | entry = findEntryByIndex(cfg, index); |
1462 | } else { |
1463 | entry = findEntryByTitle(cfg, defTitle, &index); |
1464 | } |
1465 | if (entry) |
1466 | cfg->defaultImage = index; |
1467 | } |
1468 | } else { |
1469 | cfg->defaultImage = 0; |
1470 | } |
1471 | |
1472 | return cfg; |
1473 | } |
1474 | |
1475 | static void writeDefault(FILE * out, char * indent, |
1476 | char * separator, struct grubConfig * cfg) { |
1477 | struct singleEntry * entry; |
1478 | struct singleLine * line; |
1479 | int i; |
1480 | |
1481 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; |
1482 | |
1483 | if (cfg->defaultImage == DEFAULT_SAVED) |
1484 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
1485 | else if (cfg->cfi->defaultIsSaved) { |
1486 | fprintf(out, "%sset default=\"${saved_entry}\"\n", indent); |
1487 | if (cfg->defaultImage >= 0 && cfg->cfi->setEnv) { |
1488 | char *title; |
1489 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
1490 | line = getLineByType(LT_MENUENTRY, entry->lines); |
1491 | if (!line) |
1492 | line = getLineByType(LT_TITLE, entry->lines); |
1493 | if (line) { |
1494 | title = extractTitle(line); |
1495 | if (title) |
1496 | cfg->cfi->setEnv(cfg->cfi, "saved_entry", title); |
1497 | } |
1498 | } |
1499 | } else if (cfg->defaultImage > -1) { |
1500 | if (cfg->cfi->defaultIsIndex) { |
1501 | if (cfg->cfi->defaultIsVariable) { |
1502 | fprintf(out, "%sset default=\"%d\"\n", indent, |
1503 | cfg->defaultImage); |
1504 | } else { |
1505 | fprintf(out, "%sdefault%s%d\n", indent, separator, |
1506 | cfg->defaultImage); |
1507 | } |
1508 | } else { |
1509 | int image = cfg->defaultImage; |
1510 | |
1511 | entry = cfg->entries; |
1512 | while (entry && entry->skip) entry = entry->next; |
1513 | |
1514 | i = 0; |
1515 | while (entry && i < image) { |
1516 | entry = entry->next; |
1517 | |
1518 | while (entry && entry->skip) entry = entry->next; |
1519 | i++; |
1520 | } |
1521 | |
1522 | if (!entry) return; |
1523 | |
1524 | line = getLineByType(LT_TITLE, entry->lines); |
1525 | |
1526 | if (line && line->numElements >= 2) |
1527 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1528 | line->elements[1].item); |
1529 | else if (line && (line->numElements == 1) && |
1530 | cfg->cfi->titleBracketed) { |
1531 | fprintf(out, "%sdefault%s%s\n", indent, separator, |
1532 | extractTitle(line)); |
1533 | } |
1534 | } |
1535 | } |
1536 | } |
1537 | |
1538 | static int writeConfig(struct grubConfig * cfg, char * outName, |
1539 | const char * prefix) { |
1540 | FILE * out; |
1541 | struct singleLine * line; |
1542 | struct singleEntry * entry; |
1543 | char * tmpOutName; |
1544 | int needs = MAIN_DEFAULT; |
1545 | struct stat sb; |
1546 | int i; |
1547 | |
1548 | if (!strcmp(outName, "-")) { |
1549 | out = stdout; |
1550 | tmpOutName = NULL; |
1551 | } else { |
1552 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
1553 | char * buf; |
1554 | int len = 256; |
1555 | int rc; |
1556 | |
1557 | /* most likely the symlink is relative, so change our |
1558 | directory to the dir of the symlink */ |
1559 | char *dir = strdupa(outName); |
1560 | rc = chdir(dirname(dir)); |
1561 | do { |
1562 | buf = alloca(len + 1); |
1563 | rc = readlink(basename(outName), buf, len); |
1564 | if (rc == len) len += 256; |
1565 | } while (rc == len); |
1566 | |
1567 | if (rc < 0) { |
1568 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), |
1569 | outName, strerror(errno)); |
1570 | return 1; |
1571 | } |
1572 | |
1573 | outName = buf; |
1574 | outName[rc] = '\0'; |
1575 | } |
1576 | |
1577 | tmpOutName = alloca(strlen(outName) + 2); |
1578 | sprintf(tmpOutName, "%s-", outName); |
1579 | out = fopen(tmpOutName, "w"); |
1580 | if (!out) { |
1581 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, |
1582 | strerror(errno)); |
1583 | return 1; |
1584 | } |
1585 | |
1586 | if (!stat(outName, &sb)) { |
1587 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
1588 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), |
1589 | tmpOutName, strerror(errno)); |
1590 | fclose(out); |
1591 | unlink(tmpOutName); |
1592 | return 1; |
1593 | } |
1594 | } |
1595 | } |
1596 | |
1597 | line = cfg->theLines; |
1598 | struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi); |
1599 | while (line) { |
1600 | if (line->type == LT_SET_VARIABLE && defaultKw && |
1601 | line->numElements == 3 && |
1602 | !strcmp(line->elements[1].item, defaultKw->key) && |
1603 | !is_special_grub2_variable(line->elements[2].item)) { |
1604 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1605 | needs &= ~MAIN_DEFAULT; |
1606 | } else if (line->type == LT_DEFAULT) { |
1607 | writeDefault(out, line->indent, line->elements[0].indent, cfg); |
1608 | needs &= ~MAIN_DEFAULT; |
1609 | } else if (line->type == LT_FALLBACK) { |
1610 | if (cfg->fallbackImage > -1) |
1611 | fprintf(out, "%s%s%s%d\n", line->indent, |
1612 | line->elements[0].item, line->elements[0].indent, |
1613 | cfg->fallbackImage); |
1614 | } else { |
1615 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1616 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1617 | tmpOutName, strerror(errno)); |
1618 | fclose(out); |
1619 | unlink(tmpOutName); |
1620 | return 1; |
1621 | } |
1622 | } |
1623 | |
1624 | line = line->next; |
1625 | } |
1626 | |
1627 | if (needs & MAIN_DEFAULT) { |
1628 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
1629 | needs &= ~MAIN_DEFAULT; |
1630 | } |
1631 | |
1632 | i = 0; |
1633 | while ((entry = findEntryByIndex(cfg, i++))) { |
1634 | if (entry->skip) continue; |
1635 | |
1636 | line = entry->lines; |
1637 | while (line) { |
1638 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1639 | fprintf(stderr, _("grubby: error writing %s: %s\n"), |
1640 | tmpOutName, strerror(errno)); |
1641 | fclose(out); |
1642 | unlink(tmpOutName); |
1643 | return 1; |
1644 | } |
1645 | line = line->next; |
1646 | } |
1647 | } |
1648 | |
1649 | if (tmpOutName) { |
1650 | if (rename(tmpOutName, outName)) { |
1651 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), |
1652 | tmpOutName, outName, strerror(errno)); |
1653 | unlink(outName); |
1654 | return 1; |
1655 | } |
1656 | } |
1657 | |
1658 | return 0; |
1659 | } |
1660 | |
1661 | static int numEntries(struct grubConfig *cfg) { |
1662 | int i = 0; |
1663 | struct singleEntry * entry; |
1664 | |
1665 | entry = cfg->entries; |
1666 | while (entry) { |
1667 | if (!entry->skip) |
1668 | i++; |
1669 | entry = entry->next; |
1670 | } |
1671 | return i; |
1672 | } |
1673 | |
1674 | static char *findDiskForRoot() |
1675 | { |
1676 | int fd; |
1677 | char buf[65536]; |
1678 | char *devname; |
1679 | char *chptr; |
1680 | int rc; |
1681 | |
1682 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { |
1683 | fprintf(stderr, "grubby: failed to open %s: %s\n", |
1684 | _PATH_MOUNTED, strerror(errno)); |
1685 | return NULL; |
1686 | } |
1687 | |
1688 | rc = read(fd, buf, sizeof(buf) - 1); |
1689 | if (rc <= 0) { |
1690 | fprintf(stderr, "grubby: failed to read %s: %s\n", |
1691 | _PATH_MOUNTED, strerror(errno)); |
1692 | close(fd); |
1693 | return NULL; |
1694 | } |
1695 | close(fd); |
1696 | buf[rc] = '\0'; |
1697 | chptr = buf; |
1698 | |
1699 | char *foundanswer = NULL; |
1700 | |
1701 | while (chptr && chptr != buf+rc) { |
1702 | devname = chptr; |
1703 | |
1704 | /* |
1705 | * The first column of a mtab entry is the device, but if the entry is a |
1706 | * special device it won't start with /, so move on to the next line. |
1707 | */ |
1708 | if (*devname != '/') { |
1709 | chptr = strchr(chptr, '\n'); |
1710 | if (chptr) |
1711 | chptr++; |
1712 | continue; |
1713 | } |
1714 | |
1715 | /* Seek to the next space */ |
1716 | chptr = strchr(chptr, ' '); |
1717 | if (!chptr) { |
1718 | fprintf(stderr, "grubby: error parsing %s: %s\n", |
1719 | _PATH_MOUNTED, strerror(errno)); |
1720 | return NULL; |
1721 | } |
1722 | |
1723 | /* |
1724 | * The second column of a mtab entry is the mount point, we are looking |
1725 | * for '/' obviously. |
1726 | */ |
1727 | if (*(++chptr) == '/' && *(++chptr) == ' ') { |
1728 | /* remember the last / entry in mtab */ |
1729 | foundanswer = devname; |
1730 | } |
1731 | |
1732 | /* Next line */ |
1733 | chptr = strchr(chptr, '\n'); |
1734 | if (chptr) |
1735 | chptr++; |
1736 | } |
1737 | |
1738 | /* Return the last / entry found */ |
1739 | if (foundanswer) { |
1740 | chptr = strchr(foundanswer, ' '); |
1741 | *chptr = '\0'; |
1742 | return strdup(foundanswer); |
1743 | } |
1744 | |
1745 | return NULL; |
1746 | } |
1747 | |
1748 | void printEntry(struct singleEntry * entry, FILE *f) { |
1749 | int i; |
1750 | struct singleLine * line; |
1751 | |
1752 | for (line = entry->lines; line; line = line->next) { |
1753 | log_message(f, "DBG: %s", line->indent); |
1754 | for (i = 0; i < line->numElements; i++) { |
1755 | /* Need to handle this, because we strip the quotes from |
1756 | * menuentry when read it. */ |
1757 | if (line->type == LT_MENUENTRY && i == 1) { |
1758 | if(!isquote(*line->elements[i].item)) |
1759 | log_message(f, "\'%s\'", line->elements[i].item); |
1760 | else |
1761 | log_message(f, "%s", line->elements[i].item); |
1762 | log_message(f, "%s", line->elements[i].indent); |
1763 | |
1764 | continue; |
1765 | } |
1766 | |
1767 | log_message(f, "%s%s", |
1768 | line->elements[i].item, line->elements[i].indent); |
1769 | } |
1770 | log_message(f, "\n"); |
1771 | } |
1772 | } |
1773 | |
1774 | void notSuitablePrintf(struct singleEntry * entry, int okay, const char *fmt, ...) |
1775 | { |
1776 | static int once; |
1777 | va_list argp, argq; |
1778 | |
1779 | va_start(argp, fmt); |
1780 | |
1781 | va_copy(argq, argp); |
1782 | if (!once) { |
1783 | log_time(NULL); |
1784 | log_message(NULL, "command line: %s\n", saved_command_line); |
1785 | } |
1786 | log_message(NULL, "DBG: Image entry %s: ", okay ? "succeeded" : "failed"); |
1787 | log_vmessage(NULL, fmt, argq); |
1788 | |
1789 | printEntry(entry, NULL); |
1790 | va_end(argq); |
1791 | |
1792 | if (!debug) { |
1793 | once = 1; |
1794 | va_end(argp); |
1795 | return; |
1796 | } |
1797 | |
1798 | if (okay) { |
1799 | va_end(argp); |
1800 | return; |
1801 | } |
1802 | |
1803 | if (!once) |
1804 | log_message(stderr, "DBG: command line: %s\n", saved_command_line); |
1805 | once = 1; |
1806 | fprintf(stderr, "DBG: Image entry failed: "); |
1807 | vfprintf(stderr, fmt, argp); |
1808 | printEntry(entry, stderr); |
1809 | va_end(argp); |
1810 | } |
1811 | |
1812 | #define beginswith(s, c) ((s) && (s)[0] == (c)) |
1813 | |
1814 | static int endswith(const char *s, char c) |
1815 | { |
1816 | int slen; |
1817 | |
1818 | if (!s || !s[0]) |
1819 | return 0; |
1820 | slen = strlen(s) - 1; |
1821 | |
1822 | return s[slen] == c; |
1823 | } |
1824 | |
1825 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, |
1826 | int skipRemoved, int flags) { |
1827 | struct singleLine * line; |
1828 | char * fullName; |
1829 | int i; |
1830 | char * dev; |
1831 | char * rootspec; |
1832 | char * rootdev; |
1833 | |
1834 | if (skipRemoved && entry->skip) { |
1835 | notSuitablePrintf(entry, 0, "marked to skip\n"); |
1836 | return 0; |
1837 | } |
1838 | |
1839 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI|LT_KERNEL_16, entry->lines); |
1840 | if (!line) { |
1841 | notSuitablePrintf(entry, 0, "no line found\n"); |
1842 | return 0; |
1843 | } |
1844 | if (line->numElements < 2) { |
1845 | notSuitablePrintf(entry, 0, "line has only %d elements\n", |
1846 | line->numElements); |
1847 | return 0; |
1848 | } |
1849 | |
1850 | if (flags & GRUBBY_BADIMAGE_OKAY) { |
1851 | notSuitablePrintf(entry, 1, "\n"); |
1852 | return 1; |
1853 | } |
1854 | |
1855 | fullName = alloca(strlen(bootPrefix) + |
1856 | strlen(line->elements[1].item) + 1); |
1857 | rootspec = getRootSpecifier(line->elements[1].item); |
1858 | int rootspec_offset = rootspec ? strlen(rootspec) : 0; |
1859 | int hasslash = endswith(bootPrefix, '/') || |
1860 | beginswith(line->elements[1].item + rootspec_offset, '/'); |
1861 | sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/", |
1862 | line->elements[1].item + rootspec_offset); |
1863 | if (access(fullName, R_OK)) { |
1864 | notSuitablePrintf(entry, 0, "access to %s failed\n", fullName); |
1865 | return 0; |
1866 | } |
1867 | for (i = 2; i < line->numElements; i++) |
1868 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1869 | if (i < line->numElements) { |
1870 | dev = line->elements[i].item + 5; |
1871 | } else { |
1872 | /* look for a lilo style LT_ROOT line */ |
1873 | line = getLineByType(LT_ROOT, entry->lines); |
1874 | |
1875 | if (line && line->numElements >= 2) { |
1876 | dev = line->elements[1].item; |
1877 | } else { |
1878 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS. |
1879 | * grub+multiboot uses LT_MBMODULE for the args, so check that too. |
1880 | */ |
1881 | line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines); |
1882 | |
1883 | /* failed to find one */ |
1884 | if (!line) { |
1885 | notSuitablePrintf(entry, 0, "no line found\n"); |
1886 | return 0; |
1887 | } |
1888 | |
1889 | for (i = 1; i < line->numElements; i++) |
1890 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; |
1891 | if (i < line->numElements) |
1892 | dev = line->elements[i].item + 5; |
1893 | else { |
1894 | notSuitablePrintf(entry, 0, "no root= entry found\n"); |
1895 | /* it failed too... can't find root= */ |
1896 | return 0; |
1897 | } |
1898 | } |
1899 | } |
1900 | |
1901 | dev = getpathbyspec(dev); |
1902 | if (!getpathbyspec(dev)) { |
1903 | notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n", dev); |
1904 | return 0; |
1905 | } else |
1906 | dev = getpathbyspec(dev); |
1907 | |
1908 | rootdev = findDiskForRoot(); |
1909 | if (!rootdev) { |
1910 | notSuitablePrintf(entry, 0, "can't find root device\n"); |
1911 | return 0; |
1912 | } |
1913 | |
1914 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
1915 | notSuitablePrintf(entry, 0, "uuid missing: rootdev %s, dev %s\n", |
1916 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1917 | free(rootdev); |
1918 | return 0; |
1919 | } |
1920 | |
1921 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
1922 | notSuitablePrintf(entry, 0, "uuid mismatch: rootdev %s, dev %s\n", |
1923 | getuuidbydev(rootdev), getuuidbydev(dev)); |
1924 | free(rootdev); |
1925 | return 0; |
1926 | } |
1927 | |
1928 | free(rootdev); |
1929 | notSuitablePrintf(entry, 1, "\n"); |
1930 | |
1931 | return 1; |
1932 | } |
1933 | |
1934 | /* returns the first match on or after the one pointed to by index (if index |
1935 | is not NULL) which is not marked as skip */ |
1936 | struct singleEntry * findEntryByPath(struct grubConfig * config, |
1937 | const char * kernel, const char * prefix, |
1938 | int * index) { |
1939 | struct singleEntry * entry = NULL; |
1940 | struct singleLine * line; |
1941 | int i; |
1942 | char * chptr; |
1943 | char * rootspec = NULL; |
1944 | enum lineType_e checkType = LT_KERNEL; |
1945 | |
1946 | if (isdigit(*kernel)) { |
1947 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
1948 | |
1949 | i = 0; |
1950 | indexVars[i] = strtol(kernel, &chptr, 10); |
1951 | while (*chptr == ',') { |
1952 | i++; |
1953 | kernel = chptr + 1; |
1954 | indexVars[i] = strtol(kernel, &chptr, 10); |
1955 | } |
1956 | |
1957 | if (*chptr) { |
1958 | /* can't parse it, bail */ |
1959 | return NULL; |
1960 | } |
1961 | |
1962 | indexVars[i + 1] = -1; |
1963 | |
1964 | i = 0; |
1965 | if (index) { |
1966 | while (i < *index) { |
1967 | i++; |
1968 | if (indexVars[i] == -1) return NULL; |
1969 | } |
1970 | } |
1971 | |
1972 | entry = findEntryByIndex(config, indexVars[i]); |
1973 | if (!entry) return NULL; |
1974 | |
1975 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI|LT_KERNEL_16, entry->lines); |
1976 | if (!line) return NULL; |
1977 | |
1978 | if (index) *index = indexVars[i]; |
1979 | return entry; |
1980 | } |
1981 | |
1982 | if (!strcmp(kernel, "DEFAULT")) { |
1983 | if (index && *index > config->defaultImage) { |
1984 | entry = NULL; |
1985 | } else { |
1986 | entry = findEntryByIndex(config, config->defaultImage); |
1987 | if (entry && entry->skip) |
1988 | entry = NULL; |
1989 | else if (index) |
1990 | *index = config->defaultImage; |
1991 | } |
1992 | } else if (!strcmp(kernel, "ALL")) { |
1993 | if (index) |
1994 | i = *index; |
1995 | else |
1996 | i = 0; |
1997 | |
1998 | while ((entry = findEntryByIndex(config, i))) { |
1999 | if (!entry->skip) break; |
2000 | i++; |
2001 | } |
2002 | |
2003 | if (entry && index) |
2004 | *index = i; |
2005 | } else { |
2006 | if (index) |
2007 | i = *index; |
2008 | else |
2009 | i = 0; |
2010 | |
2011 | if (!strncmp(kernel, "TITLE=", 6)) { |
2012 | prefix = ""; |
2013 | checkType = LT_TITLE|LT_MENUENTRY; |
2014 | kernel += 6; |
2015 | } |
2016 | |
2017 | for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) { |
2018 | if (entry->skip) continue; |
2019 | |
2020 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry); |
2021 | |
2022 | /* check all the lines matching checkType */ |
2023 | for (line = entry->lines; line; line = line->next) { |
2024 | enum lineType_e ct = checkType; |
2025 | if (entry->multiboot && checkType == LT_KERNEL) |
2026 | ct = LT_KERNEL|LT_KERNEL_EFI|LT_MBMODULE|LT_HYPER|LT_KERNEL_16; |
2027 | else if (checkType & LT_KERNEL) |
2028 | ct = checkType | LT_KERNEL_EFI | LT_KERNEL_16; |
2029 | line = getLineByType(ct, line); |
2030 | if (!line) |
2031 | break; /* not found in this entry */ |
2032 | |
2033 | if (line && line->type != LT_MENUENTRY && |
2034 | line->numElements >= 2) { |
2035 | rootspec = getRootSpecifier(line->elements[1].item); |
2036 | if (!strcmp(line->elements[1].item + |
2037 | ((rootspec != NULL) ? strlen(rootspec) : 0), |
2038 | kernel + strlen(prefix))) |
2039 | break; |
2040 | } |
2041 | if(line->type == LT_MENUENTRY && |
2042 | !strcmp(line->elements[1].item, kernel)) |
2043 | break; |
2044 | } |
2045 | |
2046 | /* make sure this entry has a kernel identifier; this skips |
2047 | * non-Linux boot entries (could find netbsd etc, though, which is |
2048 | * unfortunate) |
2049 | */ |
2050 | if (line && getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI|LT_KERNEL_16, entry->lines)) |
2051 | break; /* found 'im! */ |
2052 | } |
2053 | |
2054 | if (index) *index = i; |
2055 | } |
2056 | |
2057 | return entry; |
2058 | } |
2059 | |
2060 | struct singleEntry * findEntryByTitle(struct grubConfig * cfg, char *title, |
2061 | int * index) { |
2062 | struct singleEntry * entry; |
2063 | struct singleLine * line; |
2064 | int i; |
2065 | char * newtitle; |
2066 | |
2067 | for (i = 0, entry = cfg->entries; entry; entry = entry->next, i++) { |
2068 | if (index && i < *index) |
2069 | continue; |
2070 | line = getLineByType(LT_TITLE, entry->lines); |
2071 | if (!line) |
2072 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2073 | if (!line) |
2074 | continue; |
2075 | newtitle = grub2ExtractTitle(line); |
2076 | if (!newtitle) |
2077 | continue; |
2078 | if (!strcmp(title, newtitle)) |
2079 | break; |
2080 | } |
2081 | |
2082 | if (!entry) |
2083 | return NULL; |
2084 | |
2085 | if (index) |
2086 | *index = i; |
2087 | return entry; |
2088 | } |
2089 | |
2090 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { |
2091 | struct singleEntry * entry; |
2092 | |
2093 | entry = cfg->entries; |
2094 | while (index && entry) { |
2095 | entry = entry->next; |
2096 | index--; |
2097 | } |
2098 | |
2099 | return entry; |
2100 | } |
2101 | |
2102 | /* Find a good template to use for the new kernel. An entry is |
2103 | * good if the kernel and mkinitrd exist (even if the entry |
2104 | * is going to be removed). Try and use the default entry, but |
2105 | * if that doesn't work just take the first. If we can't find one, |
2106 | * bail. */ |
2107 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, |
2108 | int * indexPtr, int skipRemoved, int flags) { |
2109 | struct singleEntry * entry, * entry2; |
2110 | int index; |
2111 | |
2112 | if (cfg->cfi->defaultIsSaved) { |
2113 | if (cfg->cfi->getEnv) { |
2114 | char *defTitle = cfg->cfi->getEnv(cfg->cfi, "saved_entry"); |
2115 | if (defTitle) { |
2116 | int index = 0; |
2117 | if (isnumber(defTitle)) { |
2118 | index = atoi(defTitle); |
2119 | entry = findEntryByIndex(cfg, index); |
2120 | } else { |
2121 | entry = findEntryByTitle(cfg, defTitle, &index); |
2122 | } |
2123 | if (entry) |
2124 | cfg->defaultImage = index; |
2125 | } |
2126 | } |
2127 | } else if (cfg->defaultImage > -1) { |
2128 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
2129 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
2130 | if (indexPtr) *indexPtr = cfg->defaultImage; |
2131 | return entry; |
2132 | } |
2133 | } |
2134 | |
2135 | index = 0; |
2136 | while ((entry = findEntryByIndex(cfg, index))) { |
2137 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
2138 | int j; |
2139 | for (j = 0; j < index; j++) { |
2140 | entry2 = findEntryByIndex(cfg, j); |
2141 | if (entry2->skip) index--; |
2142 | } |
2143 | if (indexPtr) *indexPtr = index; |
2144 | |
2145 | return entry; |
2146 | } |
2147 | |
2148 | index++; |
2149 | } |
2150 | |
2151 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); |
2152 | |
2153 | return NULL; |
2154 | } |
2155 | |
2156 | char * findBootPrefix(void) { |
2157 | struct stat sb, sb2; |
2158 | |
2159 | stat("/", &sb); |
2160 | #ifdef __ia64__ |
2161 | stat("/boot/efi/EFI/redhat/", &sb2); |
2162 | #else |
2163 | stat("/boot", &sb2); |
2164 | #endif |
2165 | |
2166 | if (sb.st_dev == sb2.st_dev) |
2167 | return strdup(""); |
2168 | |
2169 | #ifdef __ia64__ |
2170 | return strdup("/boot/efi/EFI/redhat/"); |
2171 | #else |
2172 | return strdup("/boot"); |
2173 | #endif |
2174 | } |
2175 | |
2176 | void markRemovedImage(struct grubConfig * cfg, const char * image, |
2177 | const char * prefix) { |
2178 | struct singleEntry * entry; |
2179 | |
2180 | if (!image) |
2181 | return; |
2182 | |
2183 | /* check and see if we're removing the default image */ |
2184 | if (isdigit(*image)) { |
2185 | entry = findEntryByPath(cfg, image, prefix, NULL); |
2186 | if(entry) |
2187 | entry->skip = 1; |
2188 | return; |
2189 | } |
2190 | |
2191 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
2192 | entry->skip = 1; |
2193 | } |
2194 | |
2195 | void setDefaultImage(struct grubConfig * config, int hasNew, |
2196 | const char * defaultKernelPath, int newIsDefault, |
2197 | const char * prefix, int flags, int index) { |
2198 | struct singleEntry * entry, * entry2, * newDefault; |
2199 | int i, j; |
2200 | |
2201 | if (newIsDefault) { |
2202 | config->defaultImage = 0; |
2203 | return; |
2204 | } else if ((index >= 0) && config->cfi->defaultIsIndex) { |
2205 | if (findEntryByIndex(config, index)) |
2206 | config->defaultImage = index; |
2207 | else |
2208 | config->defaultImage = -1; |
2209 | return; |
2210 | } else if (defaultKernelPath) { |
2211 | i = 0; |
2212 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { |
2213 | config->defaultImage = i; |
2214 | } else { |
2215 | config->defaultImage = -1; |
2216 | return; |
2217 | } |
2218 | } |
2219 | |
2220 | /* defaultImage now points to what we'd like to use, but before any order |
2221 | changes */ |
2222 | if ((config->defaultImage == DEFAULT_SAVED) || |
2223 | (config->defaultImage == DEFAULT_SAVED_GRUB2)) |
2224 | /* default is set to saved, we don't want to change it */ |
2225 | return; |
2226 | |
2227 | if (config->defaultImage > -1) |
2228 | entry = findEntryByIndex(config, config->defaultImage); |
2229 | else |
2230 | entry = NULL; |
2231 | |
2232 | if (entry && !entry->skip) { |
2233 | /* we can preserve the default */ |
2234 | if (hasNew) |
2235 | config->defaultImage++; |
2236 | |
2237 | /* count the number of entries erased before this one */ |
2238 | for (j = 0; j < config->defaultImage; j++) { |
2239 | entry2 = findEntryByIndex(config, j); |
2240 | if (entry2->skip) config->defaultImage--; |
2241 | } |
2242 | } else if (hasNew) { |
2243 | config->defaultImage = 0; |
2244 | } else { |
2245 | /* Either we just erased the default (or the default line was bad |
2246 | * to begin with) and didn't put a new one in. We'll use the first |
2247 | * valid image. */ |
2248 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, |
2249 | flags); |
2250 | if (!newDefault) |
2251 | config->defaultImage = -1; |
2252 | } |
2253 | } |
2254 | |
2255 | void setFallbackImage(struct grubConfig * config, int hasNew) { |
2256 | struct singleEntry * entry, * entry2; |
2257 | int j; |
2258 | |
2259 | if (config->fallbackImage == -1) return; |
2260 | |
2261 | entry = findEntryByIndex(config, config->fallbackImage); |
2262 | if (!entry || entry->skip) { |
2263 | config->fallbackImage = -1; |
2264 | return; |
2265 | } |
2266 | |
2267 | if (hasNew) |
2268 | config->fallbackImage++; |
2269 | |
2270 | /* count the number of entries erased before this one */ |
2271 | for (j = 0; j < config->fallbackImage; j++) { |
2272 | entry2 = findEntryByIndex(config, j); |
2273 | if (entry2->skip) config->fallbackImage--; |
2274 | } |
2275 | } |
2276 | |
2277 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { |
2278 | struct singleLine * line; |
2279 | char * root = NULL; |
2280 | int i; |
2281 | int j; |
2282 | |
2283 | printf("index=%d\n", index); |
2284 | |
2285 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI|LT_KERNEL_16, entry->lines); |
2286 | if (!line) { |
2287 | printf("non linux entry\n"); |
2288 | return; |
2289 | } |
2290 | |
2291 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2292 | printf("kernel=%s\n", line->elements[1].item); |
2293 | else |
2294 | printf("kernel=%s%s\n", prefix, line->elements[1].item); |
2295 | |
2296 | if (line->numElements >= 3) { |
2297 | printf("args=\""); |
2298 | i = 2; |
2299 | while (i < line->numElements) { |
2300 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
2301 | root = line->elements[i].item + 5; |
2302 | } else { |
2303 | printf("%s%s", line->elements[i].item, |
2304 | line->elements[i].indent); |
2305 | } |
2306 | |
2307 | i++; |
2308 | } |
2309 | printf("\"\n"); |
2310 | } else { |
2311 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2312 | if (line) { |
2313 | char * s; |
2314 | |
2315 | printf("args=\""); |
2316 | i = 1; |
2317 | while (i < line->numElements) { |
2318 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
2319 | root = line->elements[i].item + 5; |
2320 | } else { |
2321 | s = line->elements[i].item; |
2322 | |
2323 | printf("%s%s", s, line->elements[i].indent); |
2324 | } |
2325 | |
2326 | i++; |
2327 | } |
2328 | |
2329 | s = line->elements[i - 1].indent; |
2330 | printf("\"\n"); |
2331 | } |
2332 | } |
2333 | |
2334 | if (!root) { |
2335 | line = getLineByType(LT_ROOT, entry->lines); |
2336 | if (line && line->numElements >= 2) |
2337 | root=line->elements[1].item; |
2338 | } |
2339 | |
2340 | if (root) { |
2341 | char * s = alloca(strlen(root) + 1); |
2342 | |
2343 | strcpy(s, root); |
2344 | if (s[strlen(s) - 1] == '"') |
2345 | s[strlen(s) - 1] = '\0'; |
2346 | /* make sure the root doesn't have a trailing " */ |
2347 | printf("root=%s\n", s); |
2348 | } |
2349 | |
2350 | line = getLineByType(LT_INITRD|LT_INITRD_EFI|LT_INITRD_16, entry->lines); |
2351 | |
2352 | if (line && line->numElements >= 2) { |
2353 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2354 | printf("initrd="); |
2355 | else |
2356 | printf("initrd=%s", prefix); |
2357 | |
2358 | for (i = 1; i < line->numElements; i++) |
2359 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
2360 | printf("\n"); |
2361 | } |
2362 | |
2363 | line = getLineByType(LT_TITLE, entry->lines); |
2364 | if (line) { |
2365 | printf("title=%s\n", line->elements[1].item); |
2366 | } else { |
2367 | char * title; |
2368 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2369 | title = grub2ExtractTitle(line); |
2370 | if (title) |
2371 | printf("title=%s\n", title); |
2372 | } |
2373 | |
2374 | for (j = 0, line = entry->lines; line; line = line->next) { |
2375 | if ((line->type & LT_MBMODULE) && line->numElements >= 2) { |
2376 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2377 | printf("mbmodule%d=", j); |
2378 | else |
2379 | printf("mbmodule%d=%s", j, prefix); |
2380 | |
2381 | for (i = 1; i < line->numElements; i++) |
2382 | printf("%s%s", line->elements[i].item, line->elements[i].indent); |
2383 | printf("\n"); |
2384 | j++; |
2385 | } |
2386 | } |
2387 | } |
2388 | |
2389 | int isSuseSystem(void) { |
2390 | const char * path; |
2391 | const static char default_path[] = "/etc/SuSE-release"; |
2392 | |
2393 | if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL) |
2394 | path = default_path; |
2395 | |
2396 | if (!access(path, R_OK)) |
2397 | return 1; |
2398 | return 0; |
2399 | } |
2400 | |
2401 | int isSuseGrubConf(const char * path) { |
2402 | FILE * grubConf; |
2403 | char * line = NULL; |
2404 | size_t len = 0, res = 0; |
2405 | |
2406 | grubConf = fopen(path, "r"); |
2407 | if (!grubConf) { |
2408 | dbgPrintf("Could not open SuSE configuration file '%s'\n", path); |
2409 | return 0; |
2410 | } |
2411 | |
2412 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2413 | if (!strncmp(line, "setup", 5)) { |
2414 | fclose(grubConf); |
2415 | free(line); |
2416 | return 1; |
2417 | } |
2418 | } |
2419 | |
2420 | dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n", |
2421 | path); |
2422 | |
2423 | fclose(grubConf); |
2424 | free(line); |
2425 | return 0; |
2426 | } |
2427 | |
2428 | int suseGrubConfGetLba(const char * path, int * lbaPtr) { |
2429 | FILE * grubConf; |
2430 | char * line = NULL; |
2431 | size_t res = 0, len = 0; |
2432 | |
2433 | if (!path) return 1; |
2434 | if (!lbaPtr) return 1; |
2435 | |
2436 | grubConf = fopen(path, "r"); |
2437 | if (!grubConf) return 1; |
2438 | |
2439 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2440 | if (line[res - 1] == '\n') |
2441 | line[res - 1] = '\0'; |
2442 | else if (len > res) |
2443 | line[res] = '\0'; |
2444 | else { |
2445 | line = realloc(line, res + 1); |
2446 | line[res] = '\0'; |
2447 | } |
2448 | |
2449 | if (!strncmp(line, "setup", 5)) { |
2450 | if (strstr(line, "--force-lba")) { |
2451 | *lbaPtr = 1; |
2452 | } else { |
2453 | *lbaPtr = 0; |
2454 | } |
2455 | dbgPrintf("lba: %i\n", *lbaPtr); |
2456 | break; |
2457 | } |
2458 | } |
2459 | |
2460 | free(line); |
2461 | fclose(grubConf); |
2462 | return 0; |
2463 | } |
2464 | |
2465 | int suseGrubConfGetInstallDevice(const char * path, char ** devicePtr) { |
2466 | FILE * grubConf; |
2467 | char * line = NULL; |
2468 | size_t res = 0, len = 0; |
2469 | char * lastParamPtr = NULL; |
2470 | char * secLastParamPtr = NULL; |
2471 | char installDeviceNumber = '\0'; |
2472 | char * bounds = NULL; |
2473 | |
2474 | if (!path) return 1; |
2475 | if (!devicePtr) return 1; |
2476 | |
2477 | grubConf = fopen(path, "r"); |
2478 | if (!grubConf) return 1; |
2479 | |
2480 | while ((res = getline(&line, &len, grubConf)) != -1) { |
2481 | if (strncmp(line, "setup", 5)) |
2482 | continue; |
2483 | |
2484 | if (line[res - 1] == '\n') |
2485 | line[res - 1] = '\0'; |
2486 | else if (len > res) |
2487 | line[res] = '\0'; |
2488 | else { |
2489 | line = realloc(line, res + 1); |
2490 | line[res] = '\0'; |
2491 | } |
2492 | |
2493 | lastParamPtr = bounds = line + res; |
2494 | |
2495 | /* Last parameter in grub may be an optional IMAGE_DEVICE */ |
2496 | while (!isspace(*lastParamPtr)) |
2497 | lastParamPtr--; |
2498 | lastParamPtr++; |
2499 | |
2500 | secLastParamPtr = lastParamPtr - 2; |
2501 | dbgPrintf("lastParamPtr: %s\n", lastParamPtr); |
2502 | |
2503 | if (lastParamPtr + 3 > bounds) { |
2504 | dbgPrintf("lastParamPtr going over boundary"); |
2505 | fclose(grubConf); |
2506 | free(line); |
2507 | return 1; |
2508 | } |
2509 | if (!strncmp(lastParamPtr, "(hd", 3)) |
2510 | lastParamPtr += 3; |
2511 | dbgPrintf("lastParamPtr: %c\n", *lastParamPtr); |
2512 | |
2513 | /* |
2514 | * Second last parameter will decide wether last parameter is |
2515 | * an IMAGE_DEVICE or INSTALL_DEVICE |
2516 | */ |
2517 | while (!isspace(*secLastParamPtr)) |
2518 | secLastParamPtr--; |
2519 | secLastParamPtr++; |
2520 | |
2521 | if (secLastParamPtr + 3 > bounds) { |
2522 | dbgPrintf("secLastParamPtr going over boundary"); |
2523 | fclose(grubConf); |
2524 | free(line); |
2525 | return 1; |
2526 | } |
2527 | dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr); |
2528 | if (!strncmp(secLastParamPtr, "(hd", 3)) { |
2529 | secLastParamPtr += 3; |
2530 | dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr); |
2531 | installDeviceNumber = *secLastParamPtr; |
2532 | } else { |
2533 | installDeviceNumber = *lastParamPtr; |
2534 | } |
2535 | |
2536 | *devicePtr = malloc(6); |
2537 | snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber); |
2538 | dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber); |
2539 | fclose(grubConf); |
2540 | free(line); |
2541 | return 0; |
2542 | } |
2543 | |
2544 | free(line); |
2545 | fclose(grubConf); |
2546 | return 1; |
2547 | } |
2548 | |
2549 | int grubGetBootFromDeviceMap(const char * device, |
2550 | char ** bootPtr) { |
2551 | FILE * deviceMap; |
2552 | char * line = NULL; |
2553 | size_t res = 0, len = 0; |
2554 | char * devicePtr; |
2555 | char * bounds = NULL; |
2556 | const char * path; |
2557 | const static char default_path[] = "/boot/grub/device.map"; |
2558 | |
2559 | if (!device) return 1; |
2560 | if (!bootPtr) return 1; |
2561 | |
2562 | if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL) |
2563 | path = default_path; |
2564 | |
2565 | dbgPrintf("opening grub device.map file from: %s\n", path); |
2566 | deviceMap = fopen(path, "r"); |
2567 | if (!deviceMap) |
2568 | return 1; |
2569 | |
2570 | while ((res = getline(&line, &len, deviceMap)) != -1) { |
2571 | if (!strncmp(line, "#", 1)) |
2572 | continue; |
2573 | |
2574 | if (line[res - 1] == '\n') |
2575 | line[res - 1] = '\0'; |
2576 | else if (len > res) |
2577 | line[res] = '\0'; |
2578 | else { |
2579 | line = realloc(line, res + 1); |
2580 | line[res] = '\0'; |
2581 | } |
2582 | |
2583 | devicePtr = line; |
2584 | bounds = line + res; |
2585 | |
2586 | while ((isspace(*line) && ((devicePtr + 1) <= bounds))) |
2587 | devicePtr++; |
2588 | dbgPrintf("device: %s\n", devicePtr); |
2589 | |
2590 | if (!strncmp(devicePtr, device, strlen(device))) { |
2591 | devicePtr += strlen(device); |
2592 | while (isspace(*devicePtr) && ((devicePtr + 1) <= bounds)) |
2593 | devicePtr++; |
2594 | |
2595 | *bootPtr = strdup(devicePtr); |
2596 | break; |
2597 | } |
2598 | } |
2599 | |
2600 | free(line); |
2601 | fclose(deviceMap); |
2602 | return 0; |
2603 | } |
2604 | |
2605 | int suseGrubConfGetBoot(const char * path, char ** bootPtr) { |
2606 | char * grubDevice; |
2607 | |
2608 | if (suseGrubConfGetInstallDevice(path, &grubDevice)) |
2609 | dbgPrintf("error looking for grub installation device\n"); |
2610 | else |
2611 | dbgPrintf("grubby installation device: %s\n", grubDevice); |
2612 | |
2613 | if (grubGetBootFromDeviceMap(grubDevice, bootPtr)) |
2614 | dbgPrintf("error looking for grub boot device\n"); |
2615 | else |
2616 | dbgPrintf("grubby boot device: %s\n", *bootPtr); |
2617 | |
2618 | free(grubDevice); |
2619 | return 0; |
2620 | } |
2621 | |
2622 | int parseSuseGrubConf(int * lbaPtr, char ** bootPtr) { |
2623 | /* |
2624 | * This SuSE grub configuration file at this location is not your average |
2625 | * grub configuration file, but instead the grub commands used to setup |
2626 | * grub on that system. |
2627 | */ |
2628 | const char * path; |
2629 | const static char default_path[] = "/etc/grub.conf"; |
2630 | |
2631 | if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL) |
2632 | path = default_path; |
2633 | |
2634 | if (!isSuseGrubConf(path)) return 1; |
2635 | |
2636 | if (lbaPtr) { |
2637 | *lbaPtr = 0; |
2638 | if (suseGrubConfGetLba(path, lbaPtr)) |
2639 | return 1; |
2640 | } |
2641 | |
2642 | if (bootPtr) { |
2643 | *bootPtr = NULL; |
2644 | suseGrubConfGetBoot(path, bootPtr); |
2645 | } |
2646 | |
2647 | return 0; |
2648 | } |
2649 | |
2650 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { |
2651 | FILE * in; |
2652 | char buf[1024]; |
2653 | char * chptr; |
2654 | char * start; |
2655 | char * param; |
2656 | |
2657 | in = fopen("/etc/conf.d/grub", "r"); |
2658 | if (!in) return 1; |
2659 | |
2660 | if (lbaPtr) *lbaPtr = 0; |
2661 | if (bootPtr) *bootPtr = NULL; |
2662 | |
2663 | while (fgets(buf, sizeof(buf), in)) { |
2664 | start = buf; |
2665 | while (isspace(*start)) start++; |
2666 | if (*start == '#') continue; |
2667 | |
2668 | chptr = strchr(start, '='); |
2669 | if (!chptr) continue; |
2670 | chptr--; |
2671 | while (*chptr && isspace(*chptr)) chptr--; |
2672 | chptr++; |
2673 | *chptr = '\0'; |
2674 | |
2675 | param = chptr + 1; |
2676 | while (*param && isspace(*param)) param++; |
2677 | if (*param == '=') { |
2678 | param++; |
2679 | while (*param && isspace(*param)) param++; |
2680 | } |
2681 | |
2682 | chptr = param; |
2683 | while (*chptr && !isspace(*chptr)) chptr++; |
2684 | *chptr = '\0'; |
2685 | |
2686 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
2687 | *lbaPtr = 1; |
2688 | else if (!strcmp(start, "boot") && bootPtr) |
2689 | *bootPtr = strdup(param); |
2690 | } |
2691 | |
2692 | fclose(in); |
2693 | |
2694 | return 0; |
2695 | } |
2696 | |
2697 | void dumpSysconfigGrub(void) { |
2698 | char * boot = NULL; |
2699 | int lba; |
2700 | |
2701 | if (isSuseSystem()) { |
2702 | if (parseSuseGrubConf(&lba, &boot)) { |
2703 | free(boot); |
2704 | return; |
2705 | } |
2706 | } else { |
2707 | if (parseSysconfigGrub(&lba, &boot)) { |
2708 | free(boot); |
2709 | return; |
2710 | } |
2711 | } |
2712 | |
2713 | if (lba) printf("lba\n"); |
2714 | if (boot) { |
2715 | printf("boot=%s\n", boot); |
2716 | free(boot); |
2717 | } |
2718 | } |
2719 | |
2720 | int displayInfo(struct grubConfig * config, char * kernel, |
2721 | const char * prefix) { |
2722 | int i = 0; |
2723 | struct singleEntry * entry; |
2724 | struct singleLine * line; |
2725 | |
2726 | entry = findEntryByPath(config, kernel, prefix, &i); |
2727 | if (!entry) { |
2728 | fprintf(stderr, _("grubby: kernel not found\n")); |
2729 | return 1; |
2730 | } |
2731 | |
2732 | /* this is a horrible hack to support /etc/conf.d/grub; there must |
2733 | be a better way */ |
2734 | if (config->cfi == &grubConfigType) { |
2735 | dumpSysconfigGrub(); |
2736 | } else { |
2737 | line = getLineByType(LT_BOOT, config->theLines); |
2738 | if (line && line->numElements >= 1) { |
2739 | printf("boot=%s\n", line->elements[1].item); |
2740 | } |
2741 | |
2742 | line = getLineByType(LT_LBA, config->theLines); |
2743 | if (line) printf("lba\n"); |
2744 | } |
2745 | |
2746 | displayEntry(entry, prefix, i); |
2747 | |
2748 | i++; |
2749 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
2750 | displayEntry(entry, prefix, i); |
2751 | i++; |
2752 | } |
2753 | |
2754 | return 0; |
2755 | } |
2756 | |
2757 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
2758 | struct singleLine * tmplLine, |
2759 | struct singleLine * prevLine, |
2760 | const char * val, |
2761 | struct configFileInfo * cfi) |
2762 | { |
2763 | struct singleLine * newLine = lineDup(tmplLine); |
2764 | |
2765 | if (isEfi && cfi == &grub2ConfigType) { |
2766 | enum lineType_e old = newLine->type; |
2767 | newLine->type = preferredLineType(newLine->type, cfi); |
2768 | if (old != newLine->type) |
2769 | newLine->elements[0].item = getKeyByType(newLine->type, cfi); |
2770 | } |
2771 | |
2772 | if (val) { |
2773 | /* override the inherited value with our own. |
2774 | * This is a little weak because it only applies to elements[1] |
2775 | */ |
2776 | if (newLine->numElements > 1) |
2777 | removeElement(newLine, 1); |
2778 | insertElement(newLine, val, 1, cfi); |
2779 | |
2780 | /* but try to keep the rootspec from the template... sigh */ |
2781 | if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD|LT_KERNEL_EFI|LT_INITRD_EFI|LT_KERNEL_16|LT_INITRD_16)) { |
2782 | char * rootspec = getRootSpecifier(tmplLine->elements[1].item); |
2783 | if (rootspec != NULL) { |
2784 | free(newLine->elements[1].item); |
2785 | newLine->elements[1].item = |
2786 | sdupprintf("%s%s", rootspec, val); |
2787 | } |
2788 | } |
2789 | } |
2790 | |
2791 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? |
2792 | newLine->elements[0].item : ""); |
2793 | |
2794 | if (!entry->lines) { |
2795 | /* first one on the list */ |
2796 | entry->lines = newLine; |
2797 | } else if (prevLine) { |
2798 | /* add after prevLine */ |
2799 | newLine->next = prevLine->next; |
2800 | prevLine->next = newLine; |
2801 | } |
2802 | |
2803 | return newLine; |
2804 | } |
2805 | |
2806 | /* val may be NULL */ |
2807 | struct singleLine * addLine(struct singleEntry * entry, |
2808 | struct configFileInfo * cfi, |
2809 | enum lineType_e type, char * defaultIndent, |
2810 | const char * val) { |
2811 | struct singleLine * line, * prev; |
2812 | struct keywordTypes * kw; |
2813 | struct singleLine tmpl; |
2814 | |
2815 | /* NB: This function shouldn't allocate items on the heap, rather on the |
2816 | * stack since it calls addLineTmpl which will make copies. |
2817 | */ |
2818 | if (type == LT_TITLE && cfi->titleBracketed) { |
2819 | /* we're doing a bracketed title (zipl) */ |
2820 | tmpl.type = type; |
2821 | tmpl.numElements = 1; |
2822 | tmpl.elements = alloca(sizeof(*tmpl.elements)); |
2823 | tmpl.elements[0].item = alloca(strlen(val)+3); |
2824 | sprintf(tmpl.elements[0].item, "[%s]", val); |
2825 | tmpl.elements[0].indent = ""; |
2826 | val = NULL; |
2827 | } else if (type == LT_MENUENTRY) { |
2828 | char *lineend = "--class gnu-linux --class gnu --class os {"; |
2829 | if (!val) { |
2830 | fprintf(stderr, "Line type LT_MENUENTRY requires a value\n"); |
2831 | abort(); |
2832 | } |
2833 | kw = getKeywordByType(type, cfi); |
2834 | if (!kw) { |
2835 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2836 | abort(); |
2837 | } |
2838 | tmpl.indent = ""; |
2839 | tmpl.type = type; |
2840 | tmpl.numElements = 3; |
2841 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2842 | tmpl.elements[0].item = kw->key; |
2843 | tmpl.elements[0].indent = alloca(2); |
2844 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2845 | tmpl.elements[1].item = (char *)val; |
2846 | tmpl.elements[1].indent = alloca(2); |
2847 | sprintf(tmpl.elements[1].indent, "%c", kw->nextChar); |
2848 | tmpl.elements[2].item = alloca(strlen(lineend)+1); |
2849 | strcpy(tmpl.elements[2].item, lineend); |
2850 | tmpl.elements[2].indent = ""; |
2851 | } else { |
2852 | kw = getKeywordByType(type, cfi); |
2853 | if (!kw) { |
2854 | fprintf(stderr, "Looking up keyword for unknown type %d\n", type); |
2855 | abort(); |
2856 | } |
2857 | tmpl.type = type; |
2858 | tmpl.numElements = val ? 2 : 1; |
2859 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
2860 | tmpl.elements[0].item = kw->key; |
2861 | tmpl.elements[0].indent = alloca(2); |
2862 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
2863 | if (val) { |
2864 | tmpl.elements[1].item = (char *)val; |
2865 | tmpl.elements[1].indent = ""; |
2866 | } |
2867 | } |
2868 | |
2869 | /* The last non-empty line gives us the indention to us and the line |
2870 | to insert after. Note that comments are considered empty lines, which |
2871 | may not be ideal? If there are no lines or we are looking at the |
2872 | first line, we use defaultIndent (the first line is normally indented |
2873 | differently from the rest) */ |
2874 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
2875 | if (line->numElements) prev = line; |
2876 | /* fall back on the last line if prev isn't otherwise set */ |
2877 | if (!line->next && !prev) prev = line; |
2878 | } |
2879 | |
2880 | struct singleLine *menuEntry; |
2881 | menuEntry = getLineByType(LT_MENUENTRY, entry->lines); |
2882 | if (tmpl.type == LT_ENTRY_END) { |
2883 | if (menuEntry) |
2884 | tmpl.indent = menuEntry->indent; |
2885 | else |
2886 | tmpl.indent = defaultIndent ?: ""; |
2887 | } else if (tmpl.type != LT_MENUENTRY) { |
2888 | if (menuEntry) |
2889 | tmpl.indent = "\t"; |
2890 | else if (prev == entry->lines) |
2891 | tmpl.indent = defaultIndent ?: ""; |
2892 | else |
2893 | tmpl.indent = prev->indent; |
2894 | } |
2895 | |
2896 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
2897 | } |
2898 | |
2899 | void removeLine(struct singleEntry * entry, struct singleLine * line) { |
2900 | struct singleLine * prev; |
2901 | int i; |
2902 | |
2903 | for (i = 0; i < line->numElements; i++) { |
2904 | free(line->elements[i].item); |
2905 | free(line->elements[i].indent); |
2906 | } |
2907 | free(line->elements); |
2908 | free(line->indent); |
2909 | |
2910 | if (line == entry->lines) { |
2911 | entry->lines = line->next; |
2912 | } else { |
2913 | prev = entry->lines; |
2914 | while (prev->next != line) prev = prev->next; |
2915 | prev->next = line->next; |
2916 | } |
2917 | |
2918 | free(line); |
2919 | } |
2920 | |
2921 | static void requote(struct singleLine *tmplLine, struct configFileInfo * cfi) |
2922 | { |
2923 | struct singleLine newLine = { |
2924 | .indent = tmplLine->indent, |
2925 | .type = tmplLine->type, |
2926 | .next = tmplLine->next, |
2927 | }; |
2928 | int firstQuotedItem = -1; |
2929 | int quoteLen = 0; |
2930 | int j; |
2931 | int element = 0; |
2932 | char *c; |
2933 | |
2934 | c = malloc(strlen(tmplLine->elements[0].item) + 1); |
2935 | strcpy(c, tmplLine->elements[0].item); |
2936 | insertElement(&newLine, c, element++, cfi); |
2937 | free(c); |
2938 | c = NULL; |
2939 | |
2940 | for (j = 1; j < tmplLine->numElements; j++) { |
2941 | if (firstQuotedItem == -1) { |
2942 | quoteLen += strlen(tmplLine->elements[j].item); |
2943 | |
2944 | if (isquote(tmplLine->elements[j].item[0])) { |
2945 | firstQuotedItem = j; |
2946 | quoteLen += strlen(tmplLine->elements[j].indent); |
2947 | } else { |
2948 | c = malloc(quoteLen + 1); |
2949 | strcpy(c, tmplLine->elements[j].item); |
2950 | insertElement(&newLine, c, element++, cfi); |
2951 | free(c); |
2952 | quoteLen = 0; |
2953 | } |
2954 | } else { |
2955 | int itemlen = strlen(tmplLine->elements[j].item); |
2956 | quoteLen += itemlen; |
2957 | quoteLen += strlen(tmplLine->elements[j].indent); |
2958 | |
2959 | if (isquote(tmplLine->elements[j].item[itemlen - 1])) { |
2960 | c = malloc(quoteLen + 1); |
2961 | c[0] = '\0'; |
2962 | for (int i = firstQuotedItem; i < j+1; i++) { |
2963 | strcat(c, tmplLine->elements[i].item); |
2964 | strcat(c, tmplLine->elements[i].indent); |
2965 | } |
2966 | insertElement(&newLine, c, element++, cfi); |
2967 | free(c); |
2968 | |
2969 | firstQuotedItem = -1; |
2970 | quoteLen = 0; |
2971 | } |
2972 | } |
2973 | } |
2974 | while (tmplLine->numElements) |
2975 | removeElement(tmplLine, 0); |
2976 | if (tmplLine->elements) |
2977 | free(tmplLine->elements); |
2978 | |
2979 | tmplLine->numElements = newLine.numElements; |
2980 | tmplLine->elements = newLine.elements; |
2981 | } |
2982 | |
2983 | static void insertElement(struct singleLine * line, |
2984 | const char * item, int insertHere, |
2985 | struct configFileInfo * cfi) |
2986 | { |
2987 | struct keywordTypes * kw; |
2988 | char indent[2] = ""; |
2989 | |
2990 | /* sanity check */ |
2991 | if (insertHere > line->numElements) { |
2992 | dbgPrintf("insertElement() adjusting insertHere from %d to %d\n", |
2993 | insertHere, line->numElements); |
2994 | insertHere = line->numElements; |
2995 | } |
2996 | |
2997 | line->elements = realloc(line->elements, (line->numElements + 1) * |
2998 | sizeof(*line->elements)); |
2999 | memmove(&line->elements[insertHere+1], |
3000 | &line->elements[insertHere], |
3001 | (line->numElements - insertHere) * |
3002 | sizeof(*line->elements)); |
3003 | line->elements[insertHere].item = strdup(item); |
3004 | |
3005 | kw = getKeywordByType(line->type, cfi); |
3006 | |
3007 | if (line->numElements == 0) { |
3008 | indent[0] = '\0'; |
3009 | } else if (insertHere == 0) { |
3010 | indent[0] = kw->nextChar; |
3011 | } else if (kw->separatorChar != '\0') { |
3012 | indent[0] = kw->separatorChar; |
3013 | } else { |
3014 | indent[0] = ' '; |
3015 | } |
3016 | |
3017 | if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') { |
3018 | /* move the end-of-line forward */ |
3019 | line->elements[insertHere].indent = |
3020 | line->elements[insertHere-1].indent; |
3021 | line->elements[insertHere-1].indent = strdup(indent); |
3022 | } else { |
3023 | line->elements[insertHere].indent = strdup(indent); |
3024 | } |
3025 | |
3026 | line->numElements++; |
3027 | |
3028 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", |
3029 | line->elements[0].item, |
3030 | line->elements[insertHere].item, |
3031 | line->elements[insertHere].indent, |
3032 | insertHere); |
3033 | } |
3034 | |
3035 | static void removeElement(struct singleLine * line, int removeHere) { |
3036 | int i; |
3037 | |
3038 | /* sanity check */ |
3039 | if (removeHere >= line->numElements) return; |
3040 | |
3041 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, |
3042 | removeHere, line->elements[removeHere].item); |
3043 | |
3044 | free(line->elements[removeHere].item); |
3045 | |
3046 | if (removeHere > 1) { |
3047 | /* previous argument gets this argument's post-indentation */ |
3048 | free(line->elements[removeHere-1].indent); |
3049 | line->elements[removeHere-1].indent = |
3050 | line->elements[removeHere].indent; |
3051 | } else { |
3052 | free(line->elements[removeHere].indent); |
3053 | } |
3054 | |
3055 | /* now collapse the array, but don't bother to realloc smaller */ |
3056 | for (i = removeHere; i < line->numElements - 1; i++) |
3057 | line->elements[i] = line->elements[i + 1]; |
3058 | |
3059 | line->numElements--; |
3060 | } |
3061 | |
3062 | int argMatch(const char * one, const char * two) { |
3063 | char * first, * second; |
3064 | char * chptr; |
3065 | |
3066 | first = strcpy(alloca(strlen(one) + 1), one); |
3067 | second = strcpy(alloca(strlen(two) + 1), two); |
3068 | |
3069 | chptr = strchr(first, '='); |
3070 | if (chptr) *chptr = '\0'; |
3071 | |
3072 | chptr = strchr(second, '='); |
3073 | if (chptr) *chptr = '\0'; |
3074 | |
3075 | return strcmp(first, second); |
3076 | } |
3077 | |
3078 | int updateActualImage(struct grubConfig * cfg, const char * image, |
3079 | const char * prefix, const char * addArgs, |
3080 | const char * removeArgs, int multibootArgs) { |
3081 | struct singleEntry * entry; |
3082 | struct singleLine * line, * rootLine; |
3083 | int index = 0; |
3084 | int i, k; |
3085 | const char ** newArgs, ** oldArgs; |
3086 | const char ** arg; |
3087 | int useKernelArgs, useRoot; |
3088 | int firstElement; |
3089 | int *usedElements; |
3090 | int doreplace; |
3091 | |
3092 | if (!image) return 0; |
3093 | |
3094 | if (!addArgs) { |
3095 | newArgs = malloc(sizeof(*newArgs)); |
3096 | *newArgs = NULL; |
3097 | } else { |
3098 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
3099 | fprintf(stderr, |
3100 | _("grubby: error separating arguments '%s'\n"), addArgs); |
3101 | return 1; |
3102 | } |
3103 | } |
3104 | |
3105 | if (!removeArgs) { |
3106 | oldArgs = malloc(sizeof(*oldArgs)); |
3107 | *oldArgs = NULL; |
3108 | } else { |
3109 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
3110 | fprintf(stderr, |
3111 | _("grubby: error separating arguments '%s'\n"), removeArgs); |
3112 | free(newArgs); |
3113 | return 1; |
3114 | } |
3115 | } |
3116 | |
3117 | |
3118 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
3119 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); |
3120 | |
3121 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
3122 | && !multibootArgs); |
3123 | |
3124 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3125 | |
3126 | if (multibootArgs && !entry->multiboot) |
3127 | continue; |
3128 | |
3129 | /* Determine where to put the args. If this config supports |
3130 | * LT_KERNELARGS, use that. Otherwise use |
3131 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. |
3132 | */ |
3133 | if (useKernelArgs) { |
3134 | line = getLineByType(LT_KERNELARGS, entry->lines); |
3135 | if (!line) { |
3136 | /* no LT_KERNELARGS, need to add it */ |
3137 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, |
3138 | cfg->secondaryIndent, NULL); |
3139 | } |
3140 | firstElement = 1; |
3141 | |
3142 | } else if (multibootArgs) { |
3143 | line = getLineByType(LT_HYPER, entry->lines); |
3144 | if (!line) { |
3145 | /* a multiboot entry without LT_HYPER? */ |
3146 | continue; |
3147 | } |
3148 | firstElement = 2; |
3149 | |
3150 | } else { |
3151 | line = getLineByType(LT_KERNEL|LT_MBMODULE|LT_KERNEL_EFI|LT_KERNEL_16, entry->lines); |
3152 | if (!line) { |
3153 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ |
3154 | continue; |
3155 | } |
3156 | firstElement = 2; |
3157 | } |
3158 | |
3159 | /* handle the elilo case which does: |
3160 | * append="hypervisor args -- kernel args" |
3161 | */ |
3162 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { |
3163 | /* this is a multiboot entry, make sure there's |
3164 | * -- on the args line |
3165 | */ |
3166 | for (i = firstElement; i < line->numElements; i++) { |
3167 | if (!strcmp(line->elements[i].item, "--")) |
3168 | break; |
3169 | } |
3170 | if (i == line->numElements) { |
3171 | /* assume all existing args are kernel args, |
3172 | * prepend -- to make it official |
3173 | */ |
3174 | insertElement(line, "--", firstElement, cfg->cfi); |
3175 | i = firstElement; |
3176 | } |
3177 | if (!multibootArgs) { |
3178 | /* kernel args start after the -- */ |
3179 | firstElement = i + 1; |
3180 | } |
3181 | } else if (cfg->cfi->mbConcatArgs) { |
3182 | /* this is a non-multiboot entry, remove hyper args */ |
3183 | for (i = firstElement; i < line->numElements; i++) { |
3184 | if (!strcmp(line->elements[i].item, "--")) |
3185 | break; |
3186 | } |
3187 | if (i < line->numElements) { |
3188 | /* remove args up to -- */ |
3189 | while (strcmp(line->elements[firstElement].item, "--")) |
3190 | removeElement(line, firstElement); |
3191 | /* remove -- */ |
3192 | removeElement(line, firstElement); |
3193 | } |
3194 | } |
3195 | |
3196 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
3197 | |
3198 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
3199 | |
3200 | doreplace = 1; |
3201 | for (i = firstElement; i < line->numElements; i++) { |
3202 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
3203 | !strcmp(line->elements[i].item, "--")) |
3204 | { |
3205 | /* reached the end of hyper args, insert here */ |
3206 | doreplace = 0; |
3207 | break; |
3208 | } |
3209 | if (usedElements[i]) |
3210 | continue; |
3211 | if (!argMatch(line->elements[i].item, *arg)) { |
3212 | usedElements[i]=1; |
3213 | break; |
3214 | } |
3215 | } |
3216 | |
3217 | if (i < line->numElements && doreplace) { |
3218 | /* direct replacement */ |
3219 | free(line->elements[i].item); |
3220 | line->elements[i].item = strdup(*arg); |
3221 | |
3222 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
3223 | /* root= replacement */ |
3224 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3225 | if (rootLine) { |
3226 | free(rootLine->elements[1].item); |
3227 | rootLine->elements[1].item = strdup(*arg + 5); |
3228 | } else { |
3229 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, |
3230 | cfg->secondaryIndent, *arg + 5); |
3231 | } |
3232 | } |
3233 | |
3234 | else { |
3235 | /* insert/append */ |
3236 | insertElement(line, *arg, i, cfg->cfi); |
3237 | usedElements = realloc(usedElements, line->numElements * |
3238 | sizeof(*usedElements)); |
3239 | memmove(&usedElements[i + 1], &usedElements[i], |
3240 | line->numElements - i - 1); |
3241 | usedElements[i] = 1; |
3242 | |
3243 | /* if we updated a root= here even though there is a |
3244 | LT_ROOT available we need to remove the LT_ROOT entry |
3245 | (this will happen if we switch from a device to a label) */ |
3246 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
3247 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3248 | if (rootLine) |
3249 | removeLine(entry, rootLine); |
3250 | } |
3251 | } |
3252 | } |
3253 | |
3254 | free(usedElements); |
3255 | |
3256 | for (arg = oldArgs; *arg; arg++) { |
3257 | for (i = firstElement; i < line->numElements; i++) { |
3258 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
3259 | !strcmp(line->elements[i].item, "--")) |
3260 | /* reached the end of hyper args, stop here */ |
3261 | break; |
3262 | if (!argMatch(line->elements[i].item, *arg)) { |
3263 | removeElement(line, i); |
3264 | break; |
3265 | } |
3266 | } |
3267 | /* handle removing LT_ROOT line too */ |
3268 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
3269 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3270 | if (rootLine) |
3271 | removeLine(entry, rootLine); |
3272 | } |
3273 | } |
3274 | |
3275 | if (line->numElements == 1) { |
3276 | /* don't need the line at all (note it has to be a |
3277 | LT_KERNELARGS for this to happen */ |
3278 | removeLine(entry, line); |
3279 | } |
3280 | } |
3281 | |
3282 | free(newArgs); |
3283 | free(oldArgs); |
3284 | |
3285 | return 0; |
3286 | } |
3287 | |
3288 | int updateImage(struct grubConfig * cfg, const char * image, |
3289 | const char * prefix, const char * addArgs, |
3290 | const char * removeArgs, |
3291 | const char * addMBArgs, const char * removeMBArgs) { |
3292 | int rc = 0; |
3293 | |
3294 | if (!image) return rc; |
3295 | |
3296 | /* update the main args first... */ |
3297 | if (addArgs || removeArgs) |
3298 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); |
3299 | if (rc) return rc; |
3300 | |
3301 | /* and now any multiboot args */ |
3302 | if (addMBArgs || removeMBArgs) |
3303 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); |
3304 | return rc; |
3305 | } |
3306 | |
3307 | int addMBInitrd(struct grubConfig * cfg, const char *newMBKernel, |
3308 | const char * image, const char * prefix, const char * initrd) { |
3309 | struct singleEntry * entry; |
3310 | struct singleLine * line, * kernelLine, *endLine = NULL; |
3311 | int index = 0; |
3312 | |
3313 | if (!image) return 0; |
3314 | |
3315 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3316 | kernelLine = getLineByType(LT_MBMODULE, entry->lines); |
3317 | if (!kernelLine) continue; |
3318 | |
3319 | if (prefix) { |
3320 | int prefixLen = strlen(prefix); |
3321 | if (!strncmp(initrd, prefix, prefixLen)) |
3322 | initrd += prefixLen; |
3323 | } |
3324 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
3325 | if (endLine) |
3326 | removeLine(entry, endLine); |
3327 | line = addLine(entry, cfg->cfi, preferredLineType(LT_MBMODULE,cfg->cfi), |
3328 | kernelLine->indent, initrd); |
3329 | if (!line) |
3330 | return 1; |
3331 | if (endLine) { |
3332 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
3333 | if (!line) |
3334 | return 1; |
3335 | } |
3336 | |
3337 | break; |
3338 | } |
3339 | |
3340 | return 0; |
3341 | } |
3342 | |
3343 | int updateInitrd(struct grubConfig * cfg, const char * image, |
3344 | const char * prefix, const char * initrd) { |
3345 | struct singleEntry * entry; |
3346 | struct singleLine * line, * kernelLine, *endLine = NULL; |
3347 | int index = 0; |
3348 | |
3349 | if (!image) return 0; |
3350 | |
3351 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3352 | kernelLine = getLineByType(LT_KERNEL|LT_KERNEL_EFI|LT_KERNEL_16, entry->lines); |
3353 | if (!kernelLine) continue; |
3354 | |
3355 | line = getLineByType(LT_INITRD|LT_INITRD_EFI|LT_INITRD_16, entry->lines); |
3356 | if (line) |
3357 | removeLine(entry, line); |
3358 | if (prefix) { |
3359 | int prefixLen = strlen(prefix); |
3360 | if (!strncmp(initrd, prefix, prefixLen)) |
3361 | initrd += prefixLen; |
3362 | } |
3363 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
3364 | if (endLine) |
3365 | removeLine(entry, endLine); |
3366 | enum lineType_e lt; |
3367 | switch(kernelLine->type) { |
3368 | case LT_KERNEL: |
3369 | lt = LT_INITRD; |
3370 | break; |
3371 | case LT_KERNEL_EFI: |
3372 | lt = LT_INITRD_EFI; |
3373 | break; |
3374 | case LT_KERNEL_16: |
3375 | lt = LT_INITRD_16; |
3376 | break; |
3377 | default: |
3378 | lt = preferredLineType(LT_INITRD, cfg->cfi); |
3379 | } |
3380 | line = addLine(entry, cfg->cfi, lt, kernelLine->indent, initrd); |
3381 | if (!line) |
3382 | return 1; |
3383 | if (endLine) { |
3384 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
3385 | if (!line) |
3386 | return 1; |
3387 | } |
3388 | |
3389 | break; |
3390 | } |
3391 | |
3392 | return 0; |
3393 | } |
3394 | |
3395 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { |
3396 | int fd; |
3397 | unsigned char bootSect[512]; |
3398 | int offset; |
3399 | |
3400 | fd = open(device, O_RDONLY); |
3401 | if (fd < 0) { |
3402 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3403 | device, strerror(errno)); |
3404 | return 1; |
3405 | } |
3406 | |
3407 | if (read(fd, bootSect, 512) != 512) { |
3408 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3409 | device, strerror(errno)); |
3410 | return 1; |
3411 | } |
3412 | close(fd); |
3413 | |
3414 | /* first three bytes should match, a jmp short should be in there */ |
3415 | if (memcmp(boot, bootSect, 3)) |
3416 | return 0; |
3417 | |
3418 | if (boot[1] == JMP_SHORT_OPCODE) { |
3419 | offset = boot[2] + 2; |
3420 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
3421 | offset = (boot[3] << 8) + boot[2] + 2; |
3422 | } else if (boot[0] == JMP_SHORT_OPCODE) { |
3423 | offset = boot[1] + 2; |
3424 | /* |
3425 | * it looks like grub, when copying stage1 into the mbr, patches stage1 |
3426 | * right after the JMP location, replacing other instructions such as |
3427 | * JMPs for NOOPs. So, relax the check a little bit by skipping those |
3428 | * different bytes. |
3429 | */ |
3430 | if ((bootSect[offset + 1] == NOOP_OPCODE) |
3431 | && (bootSect[offset + 2] == NOOP_OPCODE)) { |
3432 | offset = offset + 3; |
3433 | } |
3434 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
3435 | offset = (boot[2] << 8) + boot[1] + 2; |
3436 | } else { |
3437 | return 0; |
3438 | } |
3439 | |
3440 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
3441 | return 0; |
3442 | |
3443 | return 2; |
3444 | } |
3445 | |
3446 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { |
3447 | int fd; |
3448 | char buf[65536]; |
3449 | char * end; |
3450 | char * chptr; |
3451 | char * chptr2; |
3452 | int rc; |
3453 | |
3454 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
3455 | *raw* devices listed in there */ |
3456 | |
3457 | if (!strncmp(mdDev, "/dev/", 5)) |
3458 | mdDev += 5; |
3459 | |
3460 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
3461 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
3462 | strerror(errno)); |
3463 | return 2; |
3464 | } |
3465 | |
3466 | rc = read(fd, buf, sizeof(buf) - 1); |
3467 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
3468 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
3469 | strerror(errno)); |
3470 | close(fd); |
3471 | return 2; |
3472 | } |
3473 | close(fd); |
3474 | buf[rc] = '\0'; |
3475 | |
3476 | chptr = buf; |
3477 | while (*chptr) { |
3478 | end = strchr(chptr, '\n'); |
3479 | if (!end) break; |
3480 | *end = '\0'; |
3481 | |
3482 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
3483 | chptr[strlen(mdDev)] == ' ') { |
3484 | |
3485 | /* found the device */ |
3486 | while (*chptr && *chptr != ':') chptr++; |
3487 | chptr++; |
3488 | while (*chptr && isspace(*chptr)) chptr++; |
3489 | |
3490 | /* skip the "active" bit */ |
3491 | while (*chptr && !isspace(*chptr)) chptr++; |
3492 | while (*chptr && isspace(*chptr)) chptr++; |
3493 | |
3494 | /* skip the raid level */ |
3495 | while (*chptr && !isspace(*chptr)) chptr++; |
3496 | while (*chptr && isspace(*chptr)) chptr++; |
3497 | |
3498 | /* everything else is partition stuff */ |
3499 | while (*chptr) { |
3500 | chptr2 = chptr; |
3501 | while (*chptr2 && *chptr2 != '[') chptr2++; |
3502 | if (!*chptr2) break; |
3503 | |
3504 | /* yank off the numbers at the end */ |
3505 | chptr2--; |
3506 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; |
3507 | chptr2++; |
3508 | *chptr2 = '\0'; |
3509 | |
3510 | /* Better, now we need the /dev/ back. We're done with |
3511 | * everything before this point, so we can just put |
3512 | * the /dev/ part there. There will always be room. */ |
3513 | memcpy(chptr - 5, "/dev/", 5); |
3514 | rc = checkDeviceBootloader(chptr - 5, boot); |
3515 | if (rc != 2) { |
3516 | return rc; |
3517 | } |
3518 | |
3519 | chptr = chptr2 + 1; |
3520 | /* skip the [11] bit */ |
3521 | while (*chptr && !isspace(*chptr)) chptr++; |
3522 | /* and move to the next one */ |
3523 | while (*chptr && isspace(*chptr)) chptr++; |
3524 | } |
3525 | |
3526 | /* we're good to go */ |
3527 | return 2; |
3528 | } |
3529 | |
3530 | chptr = end + 1; |
3531 | } |
3532 | |
3533 | fprintf(stderr, |
3534 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
3535 | mdDev); |
3536 | return 0; |
3537 | } |
3538 | |
3539 | int checkForLilo(struct grubConfig * config) { |
3540 | int fd; |
3541 | unsigned char boot[512]; |
3542 | struct singleLine * line; |
3543 | |
3544 | for (line = config->theLines; line; line = line->next) |
3545 | if (line->type == LT_BOOT) break; |
3546 | |
3547 | if (!line) { |
3548 | fprintf(stderr, |
3549 | _("grubby: no boot line found in lilo configuration\n")); |
3550 | return 1; |
3551 | } |
3552 | |
3553 | if (line->numElements != 2) return 1; |
3554 | |
3555 | fd = open("/boot/boot.b", O_RDONLY); |
3556 | if (fd < 0) { |
3557 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
3558 | "/boot/boot.b", strerror(errno)); |
3559 | return 1; |
3560 | } |
3561 | |
3562 | if (read(fd, boot, 512) != 512) { |
3563 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3564 | "/boot/boot.b", strerror(errno)); |
3565 | return 1; |
3566 | } |
3567 | close(fd); |
3568 | |
3569 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
3570 | return checkLiloOnRaid(line->elements[1].item, boot); |
3571 | |
3572 | return checkDeviceBootloader(line->elements[1].item, boot); |
3573 | } |
3574 | |
3575 | int checkForGrub2(struct grubConfig * config) { |
3576 | if (!access("/etc/grub.d/", R_OK)) |
3577 | return 2; |
3578 | |
3579 | return 1; |
3580 | } |
3581 | |
3582 | int checkForGrub(struct grubConfig * config) { |
3583 | int fd; |
3584 | unsigned char bootSect[512]; |
3585 | char * boot; |
3586 | int onSuse = isSuseSystem(); |
3587 | |
3588 | |
3589 | if (onSuse) { |
3590 | if (parseSuseGrubConf(NULL, &boot)) |
3591 | return 0; |
3592 | } else { |
3593 | if (parseSysconfigGrub(NULL, &boot)) |
3594 | return 0; |
3595 | } |
3596 | |
3597 | /* assume grub is not installed -- not an error condition */ |
3598 | if (!boot) |
3599 | return 0; |
3600 | |
3601 | fd = open("/boot/grub/stage1", O_RDONLY); |
3602 | if (fd < 0) |
3603 | /* this doesn't exist if grub hasn't been installed */ |
3604 | return 0; |
3605 | |
3606 | if (read(fd, bootSect, 512) != 512) { |
3607 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3608 | "/boot/grub/stage1", strerror(errno)); |
3609 | close(fd); |
3610 | return 1; |
3611 | } |
3612 | close(fd); |
3613 | |
3614 | /* The more elaborate checks do not work on SuSE. The checks done |
3615 | * seem to be reasonble (at least for now), so just return success |
3616 | */ |
3617 | if (onSuse) |
3618 | return 2; |
3619 | |
3620 | return checkDeviceBootloader(boot, bootSect); |
3621 | } |
3622 | |
3623 | int checkForExtLinux(struct grubConfig * config) { |
3624 | int fd; |
3625 | unsigned char bootSect[512]; |
3626 | char * boot; |
3627 | char executable[] = "/boot/extlinux/extlinux"; |
3628 | |
3629 | printf("entered: checkForExtLinux()\n"); |
3630 | |
3631 | if (parseSysconfigGrub(NULL, &boot)) |
3632 | return 0; |
3633 | |
3634 | /* assume grub is not installed -- not an error condition */ |
3635 | if (!boot) |
3636 | return 0; |
3637 | |
3638 | fd = open(executable, O_RDONLY); |
3639 | if (fd < 0) |
3640 | /* this doesn't exist if grub hasn't been installed */ |
3641 | return 0; |
3642 | |
3643 | if (read(fd, bootSect, 512) != 512) { |
3644 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
3645 | executable, strerror(errno)); |
3646 | return 1; |
3647 | } |
3648 | close(fd); |
3649 | |
3650 | return checkDeviceBootloader(boot, bootSect); |
3651 | } |
3652 | |
3653 | int checkForYaboot(struct grubConfig * config) { |
3654 | /* |
3655 | * This is a simplistic check that we consider good enough for own puporses |
3656 | * |
3657 | * If we were to properly check if yaboot is *installed* we'd need to: |
3658 | * 1) get the system boot device (LT_BOOT) |
3659 | * 2) considering it's a raw filesystem, check if the yaboot binary matches |
3660 | * the content on the boot device |
3661 | * 3) if not, copy the binary to a temporary file and run "addnote" on it |
3662 | * 4) check again if binary and boot device contents match |
3663 | */ |
3664 | if (!access("/etc/yaboot.conf", R_OK)) |
3665 | return 2; |
3666 | |
3667 | return 1; |
3668 | } |
3669 | |
3670 | int checkForElilo(struct grubConfig * config) { |
3671 | if (!access("/etc/elilo.conf", R_OK)) |
3672 | return 2; |
3673 | |
3674 | return 1; |
3675 | } |
3676 | |
3677 | static char * getRootSpecifier(char * str) { |
3678 | char * idx, * rootspec = NULL; |
3679 | |
3680 | if (*str == '(') { |
3681 | idx = rootspec = strdup(str); |
3682 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; |
3683 | *(++idx) = '\0'; |
3684 | } |
3685 | return rootspec; |
3686 | } |
3687 | |
3688 | static char * getInitrdVal(struct grubConfig * config, |
3689 | const char * prefix, struct singleLine *tmplLine, |
3690 | const char * newKernelInitrd, |
3691 | const char ** extraInitrds, int extraInitrdCount) |
3692 | { |
3693 | char *initrdVal, *end; |
3694 | int i; |
3695 | size_t totalSize; |
3696 | size_t prefixLen; |
3697 | char separatorChar; |
3698 | |
3699 | prefixLen = strlen(prefix); |
3700 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */; |
3701 | |
3702 | for (i = 0; i < extraInitrdCount; i++) { |
3703 | totalSize += sizeof(separatorChar); |
3704 | totalSize += strlen(extraInitrds[i]) - prefixLen; |
3705 | } |
3706 | |
3707 | initrdVal = end = malloc(totalSize); |
3708 | |
3709 | end = stpcpy (end, newKernelInitrd + prefixLen); |
3710 | |
3711 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; |
3712 | for (i = 0; i < extraInitrdCount; i++) { |
3713 | const char *extraInitrd; |
3714 | int j; |
3715 | |
3716 | extraInitrd = extraInitrds[i] + prefixLen; |
3717 | /* Don't add entries that are already there */ |
3718 | if (tmplLine != NULL) { |
3719 | for (j = 2; j < tmplLine->numElements; j++) |
3720 | if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0) |
3721 | break; |
3722 | |
3723 | if (j != tmplLine->numElements) |
3724 | continue; |
3725 | } |
3726 | |
3727 | *end++ = separatorChar; |
3728 | end = stpcpy(end, extraInitrd); |
3729 | } |
3730 | |
3731 | return initrdVal; |
3732 | } |
3733 | |
3734 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, |
3735 | const char * prefix, |
3736 | const char * newKernelPath, const char * newKernelTitle, |
3737 | const char * newKernelArgs, const char * newKernelInitrd, |
3738 | const char ** extraInitrds, int extraInitrdCount, |
3739 | const char * newMBKernel, const char * newMBKernelArgs, |
3740 | const char * newDevTreePath) { |
3741 | struct singleEntry * new; |
3742 | struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL; |
3743 | int needs; |
3744 | char * chptr; |
3745 | |
3746 | if (!newKernelPath) return 0; |
3747 | |
3748 | /* if the newKernelTitle is too long silently munge it into something |
3749 | * we can live with. truncating is first check, then we'll just mess with |
3750 | * it until it looks better */ |
3751 | if (config->cfi->maxTitleLength && |
3752 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
3753 | char * buf = alloca(config->cfi->maxTitleLength + 7); |
3754 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); |
3755 | int i = 1; |
3756 | |
3757 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); |
3758 | while (findEntryByPath(config, buf, NULL, NULL)) { |
3759 | sprintf(numBuf, "%d", i++); |
3760 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
3761 | } |
3762 | |
3763 | newKernelTitle = buf + 6; |
3764 | } |
3765 | |
3766 | new = malloc(sizeof(*new)); |
3767 | new->skip = 0; |
3768 | new->multiboot = 0; |
3769 | new->next = config->entries; |
3770 | new->lines = NULL; |
3771 | config->entries = new; |
3772 | |
3773 | /* copy/update from the template */ |
3774 | needs = NEED_KERNEL | NEED_TITLE; |
3775 | if (newKernelInitrd) |
3776 | needs |= NEED_INITRD; |
3777 | if (newMBKernel) { |
3778 | needs |= NEED_MB; |
3779 | new->multiboot = 1; |
3780 | } |
3781 | if (newDevTreePath && getKeywordByType(LT_DEVTREE, config->cfi)) |
3782 | needs |= NEED_DEVTREE; |
3783 | |
3784 | if (template) { |
3785 | for (masterLine = template->lines; |
3786 | masterLine && (tmplLine = lineDup(masterLine)); |
3787 | lineFree(tmplLine), masterLine = masterLine->next) |
3788 | { |
3789 | dbgPrintf("addNewKernel processing %d\n", tmplLine->type); |
3790 | |
3791 | /* skip comments */ |
3792 | chptr = tmplLine->indent; |
3793 | while (*chptr && isspace(*chptr)) chptr++; |
3794 | if (*chptr == '#') continue; |
3795 | |
3796 | if (iskernel(tmplLine->type) && tmplLine->numElements >= 2) { |
3797 | if (!template->multiboot && (needs & NEED_MB)) { |
3798 | /* it's not a multiboot template and this is the kernel |
3799 | * line. Try to be intelligent about inserting the |
3800 | * hypervisor at the same time. |
3801 | */ |
3802 | if (config->cfi->mbHyperFirst) { |
3803 | /* insert the hypervisor first */ |
3804 | newLine = addLine(new, config->cfi, LT_HYPER, |
3805 | tmplLine->indent, |
3806 | newMBKernel + strlen(prefix)); |
3807 | /* set up for adding the kernel line */ |
3808 | free(tmplLine->indent); |
3809 | tmplLine->indent = strdup(config->secondaryIndent); |
3810 | needs &= ~NEED_MB; |
3811 | } |
3812 | if (needs & NEED_KERNEL) { |
3813 | /* use addLineTmpl to preserve line elements, |
3814 | * otherwise we could just call addLine. Unfortunately |
3815 | * this means making some changes to the template |
3816 | * such as the indent change above and the type |
3817 | * change below. |
3818 | */ |
3819 | struct keywordTypes * mbm_kw = |
3820 | getKeywordByType(LT_MBMODULE, config->cfi); |
3821 | if (mbm_kw) { |
3822 | tmplLine->type = LT_MBMODULE; |
3823 | free(tmplLine->elements[0].item); |
3824 | tmplLine->elements[0].item = strdup(mbm_kw->key); |
3825 | } |
3826 | newLine = addLineTmpl(new, tmplLine, newLine, |
3827 | newKernelPath + strlen(prefix), config->cfi); |
3828 | needs &= ~NEED_KERNEL; |
3829 | } |
3830 | if (needs & NEED_MB) { /* !mbHyperFirst */ |
3831 | newLine = addLine(new, config->cfi, LT_HYPER, |
3832 | config->secondaryIndent, |
3833 | newMBKernel + strlen(prefix)); |
3834 | needs &= ~NEED_MB; |
3835 | } |
3836 | } else if (needs & NEED_KERNEL) { |
3837 | newLine = addLineTmpl(new, tmplLine, newLine, |
3838 | newKernelPath + strlen(prefix), config->cfi); |
3839 | needs &= ~NEED_KERNEL; |
3840 | } |
3841 | |
3842 | } else if (tmplLine->type == LT_HYPER && |
3843 | tmplLine->numElements >= 2) { |
3844 | if (needs & NEED_MB) { |
3845 | newLine = addLineTmpl(new, tmplLine, newLine, |
3846 | newMBKernel + strlen(prefix), config->cfi); |
3847 | needs &= ~NEED_MB; |
3848 | } |
3849 | |
3850 | } else if (tmplLine->type == LT_MBMODULE && |
3851 | tmplLine->numElements >= 2) { |
3852 | if (new->multiboot) { |
3853 | if (needs & NEED_KERNEL) { |
3854 | newLine = addLineTmpl(new, tmplLine, newLine, |
3855 | newKernelPath + |
3856 | strlen(prefix), config->cfi); |
3857 | needs &= ~NEED_KERNEL; |
3858 | } else if (config->cfi->mbInitRdIsModule && |
3859 | (needs & NEED_INITRD)) { |
3860 | char *initrdVal; |
3861 | initrdVal = getInitrdVal(config, prefix, tmplLine, |
3862 | newKernelInitrd, extraInitrds, |
3863 | extraInitrdCount); |
3864 | newLine = addLineTmpl(new, tmplLine, newLine, |
3865 | initrdVal, config->cfi); |
3866 | free(initrdVal); |
3867 | needs &= ~NEED_INITRD; |
3868 | } |
3869 | } else if (needs & NEED_KERNEL) { |
3870 | /* template is multi but new is not, |
3871 | * insert the kernel in the first module slot |
3872 | */ |
3873 | tmplLine->type = preferredLineType(LT_KERNEL, config->cfi); |
3874 | free(tmplLine->elements[0].item); |
3875 | tmplLine->elements[0].item = |
3876 | strdup(getKeywordByType(tmplLine->type, |
3877 | config->cfi)->key); |
3878 | newLine = addLineTmpl(new, tmplLine, newLine, |
3879 | newKernelPath + strlen(prefix), |
3880 | config->cfi); |
3881 | needs &= ~NEED_KERNEL; |
3882 | } else if (needs & NEED_INITRD) { |
3883 | char *initrdVal; |
3884 | /* template is multi but new is not, |
3885 | * insert the initrd in the second module slot |
3886 | */ |
3887 | tmplLine->type = preferredLineType(LT_INITRD, config->cfi); |
3888 | free(tmplLine->elements[0].item); |
3889 | tmplLine->elements[0].item = |
3890 | strdup(getKeywordByType(tmplLine->type, |
3891 | config->cfi)->key); |
3892 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3893 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3894 | free(initrdVal); |
3895 | needs &= ~NEED_INITRD; |
3896 | } |
3897 | |
3898 | } else if (isinitrd(tmplLine->type) && tmplLine->numElements >= 2) { |
3899 | if (needs & NEED_INITRD && |
3900 | new->multiboot && !template->multiboot && |
3901 | config->cfi->mbInitRdIsModule) { |
3902 | /* make sure we don't insert the module initrd |
3903 | * before the module kernel... if we don't do it here, |
3904 | * it will be inserted following the template. |
3905 | */ |
3906 | if (!needs & NEED_KERNEL) { |
3907 | char *initrdVal; |
3908 | |
3909 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3910 | newLine = addLine(new, config->cfi, LT_MBMODULE, |
3911 | config->secondaryIndent, |
3912 | initrdVal); |
3913 | free(initrdVal); |
3914 | needs &= ~NEED_INITRD; |
3915 | } |
3916 | } else if (needs & NEED_INITRD) { |
3917 | char *initrdVal; |
3918 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); |
3919 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); |
3920 | free(initrdVal); |
3921 | needs &= ~NEED_INITRD; |
3922 | } |
3923 | |
3924 | } else if (tmplLine->type == LT_MENUENTRY && |
3925 | (needs & NEED_TITLE)) { |
3926 | requote(tmplLine, config->cfi); |
3927 | char *nkt = malloc(strlen(newKernelTitle)+3); |
3928 | strcpy(nkt, "'"); |
3929 | strcat(nkt, newKernelTitle); |
3930 | strcat(nkt, "'"); |
3931 | newLine = addLineTmpl(new, tmplLine, newLine, nkt, config->cfi); |
3932 | free(nkt); |
3933 | needs &= ~NEED_TITLE; |
3934 | } else if (tmplLine->type == LT_TITLE && |
3935 | (needs & NEED_TITLE)) { |
3936 | if (tmplLine->numElements >= 2) { |
3937 | newLine = addLineTmpl(new, tmplLine, newLine, |
3938 | newKernelTitle, config->cfi); |
3939 | needs &= ~NEED_TITLE; |
3940 | } else if (tmplLine->numElements == 1 && |
3941 | config->cfi->titleBracketed) { |
3942 | /* addLineTmpl doesn't handle titleBracketed */ |
3943 | newLine = addLine(new, config->cfi, LT_TITLE, |
3944 | tmplLine->indent, newKernelTitle); |
3945 | needs &= ~NEED_TITLE; |
3946 | } |
3947 | } else if (tmplLine->type == LT_ECHO) { |
3948 | requote(tmplLine, config->cfi); |
3949 | static const char *prefix = "'Loading "; |
3950 | if (tmplLine->numElements > 1 && |
3951 | strstr(tmplLine->elements[1].item, prefix) && |
3952 | masterLine->next && |
3953 | iskernel(masterLine->next->type)) { |
3954 | char *newTitle = malloc(strlen(prefix) + |
3955 | strlen(newKernelTitle) + 2); |
3956 | |
3957 | strcpy(newTitle, prefix); |
3958 | strcat(newTitle, newKernelTitle); |
3959 | strcat(newTitle, "'"); |
3960 | newLine = addLine(new, config->cfi, LT_ECHO, |
3961 | tmplLine->indent, newTitle); |
3962 | free(newTitle); |
3963 | } else { |
3964 | /* pass through other lines from the template */ |
3965 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, |
3966 | config->cfi); |
3967 | } |
3968 | } else if (tmplLine->type == LT_DEVTREE && |
3969 | tmplLine->numElements == 2 && newDevTreePath) { |
3970 | newLine = addLineTmpl(new, tmplLine, newLine, |
3971 | newDevTreePath + strlen(prefix), |
3972 | config->cfi); |
3973 | needs &= ~NEED_DEVTREE; |
3974 | } else if (tmplLine->type == LT_ENTRY_END && needs & NEED_DEVTREE) { |
3975 | const char *ndtp = newDevTreePath; |
3976 | if (!strncmp(newDevTreePath, prefix, strlen(prefix))) |
3977 | ndtp += strlen(prefix); |
3978 | newLine = addLine(new, config->cfi, LT_DEVTREE, |
3979 | config->secondaryIndent, |
3980 | ndtp); |
3981 | needs &= ~NEED_DEVTREE; |
3982 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); |
3983 | } else { |
3984 | /* pass through other lines from the template */ |
3985 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); |
3986 | } |
3987 | } |
3988 | |
3989 | } else { |
3990 | /* don't have a template, so start the entry with the |
3991 | * appropriate starting line |
3992 | */ |
3993 | switch (config->cfi->entryStart) { |
3994 | case LT_KERNEL: |
3995 | case LT_KERNEL_EFI: |
3996 | case LT_KERNEL_16: |
3997 | if (new->multiboot && config->cfi->mbHyperFirst) { |
3998 | /* fall through to LT_HYPER */ |
3999 | } else { |
4000 | newLine = addLine(new, config->cfi, |
4001 | preferredLineType(LT_KERNEL, config->cfi), |
4002 | config->primaryIndent, |
4003 | newKernelPath + strlen(prefix)); |
4004 | needs &= ~NEED_KERNEL; |
4005 | break; |
4006 | } |
4007 | |
4008 | case LT_HYPER: |
4009 | newLine = addLine(new, config->cfi, LT_HYPER, |
4010 | config->primaryIndent, |
4011 | newMBKernel + strlen(prefix)); |
4012 | needs &= ~NEED_MB; |
4013 | break; |
4014 | |
4015 | case LT_MENUENTRY: { |
4016 | char *nkt = malloc(strlen(newKernelTitle)+3); |
4017 | strcpy(nkt, "'"); |
4018 | strcat(nkt, newKernelTitle); |
4019 | strcat(nkt, "'"); |
4020 | newLine = addLine(new, config->cfi, LT_MENUENTRY, |
4021 | config->primaryIndent, nkt); |
4022 | free(nkt); |
4023 | needs &= ~NEED_TITLE; |
4024 | needs |= NEED_END; |
4025 | break; |
4026 | } |
4027 | case LT_TITLE: |
4028 | if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above) |
4029 | char * templabel; |
4030 | int x = 0, y = 0; |
4031 | |
4032 | templabel = strdup(newKernelTitle); |
4033 | while( templabel[x]){ |
4034 | if( templabel[x] == ' ' ){ |
4035 | y = x; |
4036 | while( templabel[y] ){ |
4037 | templabel[y] = templabel[y+1]; |
4038 | y++; |
4039 | } |
4040 | } |
4041 | x++; |
4042 | } |
4043 | newLine = addLine(new, config->cfi, LT_TITLE, |
4044 | config->primaryIndent, templabel); |
4045 | free(templabel); |
4046 | }else{ |
4047 | newLine = addLine(new, config->cfi, LT_TITLE, |
4048 | config->primaryIndent, newKernelTitle); |
4049 | } |
4050 | needs &= ~NEED_TITLE; |
4051 | break; |
4052 | |
4053 | default: |
4054 | abort(); |
4055 | } |
4056 | } |
4057 | |
4058 | struct singleLine *endLine = NULL; |
4059 | endLine = getLineByType(LT_ENTRY_END, new->lines); |
4060 | if (endLine) { |
4061 | removeLine(new, endLine); |
4062 | needs |= NEED_END; |
4063 | } |
4064 | |
4065 | /* add the remainder of the lines, i.e. those that either |
4066 | * weren't present in the template, or in the case of no template, |
4067 | * all the lines following the entryStart. |
4068 | */ |
4069 | if (needs & NEED_TITLE) { |
4070 | newLine = addLine(new, config->cfi, LT_TITLE, |
4071 | config->secondaryIndent, |
4072 | newKernelTitle); |
4073 | needs &= ~NEED_TITLE; |
4074 | } |
4075 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
4076 | newLine = addLine(new, config->cfi, LT_HYPER, |
4077 | config->secondaryIndent, |
4078 | newMBKernel + strlen(prefix)); |
4079 | needs &= ~NEED_MB; |
4080 | } |
4081 | if (needs & NEED_KERNEL) { |
4082 | newLine = addLine(new, config->cfi, |
4083 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
4084 | config->cfi)) |
4085 | ? LT_MBMODULE |
4086 | : preferredLineType(LT_KERNEL, config->cfi), |
4087 | config->secondaryIndent, |
4088 | newKernelPath + strlen(prefix)); |
4089 | needs &= ~NEED_KERNEL; |
4090 | } |
4091 | if (needs & NEED_MB) { |
4092 | newLine = addLine(new, config->cfi, LT_HYPER, |
4093 | config->secondaryIndent, |
4094 | newMBKernel + strlen(prefix)); |
4095 | needs &= ~NEED_MB; |
4096 | } |
4097 | if (needs & NEED_INITRD) { |
4098 | char *initrdVal; |
4099 | initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount); |
4100 | newLine = addLine(new, config->cfi, |
4101 | (new->multiboot && getKeywordByType(LT_MBMODULE, |
4102 | config->cfi)) |
4103 | ? LT_MBMODULE |
4104 | : preferredLineType(LT_INITRD, config->cfi), |
4105 | config->secondaryIndent, |
4106 | initrdVal); |
4107 | free(initrdVal); |
4108 | needs &= ~NEED_INITRD; |
4109 | } |
4110 | if (needs & NEED_DEVTREE) { |
4111 | newLine = addLine(new, config->cfi, LT_DEVTREE, |
4112 | config->secondaryIndent, |
4113 | newDevTreePath); |
4114 | needs &= ~NEED_DEVTREE; |
4115 | } |
4116 | |
4117 | /* NEEDS_END must be last on bootloaders that need it... */ |
4118 | if (needs & NEED_END) { |
4119 | newLine = addLine(new, config->cfi, LT_ENTRY_END, |
4120 | config->secondaryIndent, NULL); |
4121 | needs &= ~NEED_END; |
4122 | } |
4123 | |
4124 | if (needs) { |
4125 | printf(_("grubby: needs=%d, aborting\n"), needs); |
4126 | abort(); |
4127 | } |
4128 | |
4129 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, |
4130 | newMBKernelArgs, NULL)) return 1; |
4131 | |
4132 | return 0; |
4133 | } |
4134 | |
4135 | static void traceback(int signum) |
4136 | { |
4137 | void *array[40]; |
4138 | size_t size; |
4139 | |
4140 | signal(SIGSEGV, SIG_DFL); |
4141 | memset(array, '\0', sizeof (array)); |
4142 | size = backtrace(array, 40); |
4143 | |
4144 | fprintf(stderr, "grubby received SIGSEGV! Backtrace (%ld):\n", |
4145 | (unsigned long)size); |
4146 | backtrace_symbols_fd(array, size, STDERR_FILENO); |
4147 | exit(1); |
4148 | } |
4149 | |
4150 | int main(int argc, const char ** argv) { |
4151 | poptContext optCon; |
4152 | const char * grubConfig = NULL; |
4153 | char * outputFile = NULL; |
4154 | int arg = 0; |
4155 | int flags = 0; |
4156 | int badImageOkay = 0; |
4157 | int configureGrub2 = 0; |
4158 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
4159 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
4160 | int configureExtLinux = 0; |
4161 | int bootloaderProbe = 0; |
4162 | int extraInitrdCount = 0; |
4163 | char * updateKernelPath = NULL; |
4164 | char * newKernelPath = NULL; |
4165 | char * removeKernelPath = NULL; |
4166 | char * newKernelArgs = NULL; |
4167 | char * newKernelInitrd = NULL; |
4168 | char * newKernelTitle = NULL; |
4169 | char * newDevTreePath = NULL; |
4170 | char * newMBKernel = NULL; |
4171 | char * newMBKernelArgs = NULL; |
4172 | char * removeMBKernelArgs = NULL; |
4173 | char * removeMBKernel = NULL; |
4174 | char * bootPrefix = NULL; |
4175 | char * defaultKernel = NULL; |
4176 | char * removeArgs = NULL; |
4177 | char * kernelInfo = NULL; |
4178 | char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
4179 | char * envPath = NULL; |
4180 | const char * chptr = NULL; |
4181 | struct configFileInfo * cfi = NULL; |
4182 | struct grubConfig * config; |
4183 | struct singleEntry * template = NULL; |
4184 | int copyDefault = 0, makeDefault = 0; |
4185 | int displayDefault = 0; |
4186 | int displayDefaultIndex = 0; |
4187 | int displayDefaultTitle = 0; |
4188 | int defaultIndex = -1; |
4189 | struct poptOption options[] = { |
4190 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
4191 | _("add an entry for the specified kernel"), _("kernel-path") }, |
4192 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
4193 | _("add an entry for the specified multiboot kernel"), NULL }, |
4194 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
4195 | _("default arguments for the new kernel or new arguments for " |
4196 | "kernel being updated"), _("args") }, |
4197 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
4198 | _("default arguments for the new multiboot kernel or " |
4199 | "new arguments for multiboot kernel being updated"), NULL }, |
4200 | { "bad-image-okay", 0, 0, &badImageOkay, 0, |
4201 | _("don't sanity check images in boot entries (for testing only)"), |
4202 | NULL }, |
4203 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
4204 | _("filestystem which contains /boot directory (for testing only)"), |
4205 | _("bootfs") }, |
4206 | #if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__) |
4207 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
4208 | _("check which bootloader is installed on boot sector") }, |
4209 | #endif |
4210 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
4211 | _("path to grub config file to update (\"-\" for stdin)"), |
4212 | _("path") }, |
4213 | { "copy-default", 0, 0, ©Default, 0, |
4214 | _("use the default boot entry as a template for the new entry " |
4215 | "being added; if the default is not a linux image, or if " |
4216 | "the kernel referenced by the default image does not exist, " |
4217 | "the first linux entry whose kernel does exist is used as the " |
4218 | "template"), NULL }, |
4219 | { "debug", 0, 0, &debug, 0, |
4220 | _("print debugging information for failures") }, |
4221 | { "default-kernel", 0, 0, &displayDefault, 0, |
4222 | _("display the path of the default kernel") }, |
4223 | { "default-index", 0, 0, &displayDefaultIndex, 0, |
4224 | _("display the index of the default kernel") }, |
4225 | { "default-title", 0, 0, &displayDefaultTitle, 0, |
4226 | _("display the title of the default kernel") }, |
4227 | { "devtree", 0, POPT_ARG_STRING, &newDevTreePath, 0, |
4228 | _("device tree file for new stanza"), _("dtb-path") }, |
4229 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
4230 | _("configure elilo bootloader") }, |
4231 | { "efi", 0, POPT_ARG_NONE, &isEfi, 0, |
4232 | _("force grub2 stanzas to use efi") }, |
4233 | { "env", 0, POPT_ARG_STRING, &envPath, 0, |
4234 | _("path for environment data"), |
4235 | _("path") }, |
4236 | { "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
4237 | _("configure extlinux bootloader (from syslinux)") }, |
4238 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
4239 | _("configure grub bootloader") }, |
4240 | { "grub2", 0, POPT_ARG_NONE, &configureGrub2, 0, |
4241 | _("configure grub2 bootloader") }, |
4242 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
4243 | _("display boot information for specified kernel"), |
4244 | _("kernel-path") }, |
4245 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
4246 | _("initrd image for the new kernel"), _("initrd-path") }, |
4247 | { "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
4248 | _("auxiliary initrd image for things other than the new kernel"), _("initrd-path") }, |
4249 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
4250 | _("configure lilo bootloader") }, |
4251 | { "make-default", 0, 0, &makeDefault, 0, |
4252 | _("make the newly added entry the default boot entry"), NULL }, |
4253 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
4254 | _("path to output updated config file (\"-\" for stdout)"), |
4255 | _("path") }, |
4256 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
4257 | _("remove kernel arguments"), NULL }, |
4258 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
4259 | _("remove multiboot kernel arguments"), NULL }, |
4260 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
4261 | _("remove all entries for the specified kernel"), |
4262 | _("kernel-path") }, |
4263 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
4264 | _("remove all entries for the specified multiboot kernel"), NULL }, |
4265 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
4266 | _("make the first entry referencing the specified kernel " |
4267 | "the default"), _("kernel-path") }, |
4268 | { "set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0, |
4269 | _("make the given entry index the default entry"), |
4270 | _("entry-index") }, |
4271 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
4272 | _("configure silo bootloader") }, |
4273 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
4274 | _("title to use for the new kernel entry"), _("entry-title") }, |
4275 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
4276 | _("updated information for the specified kernel"), |
4277 | _("kernel-path") }, |
4278 | { "version", 'v', 0, NULL, 'v', |
4279 | _("print the version of this program and exit"), NULL }, |
4280 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
4281 | _("configure yaboot bootloader") }, |
4282 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
4283 | _("configure zipl bootloader") }, |
4284 | POPT_AUTOHELP |
4285 | { 0, 0, 0, 0, 0 } |
4286 | }; |
4287 | |
4288 | useextlinuxmenu=0; |
4289 | |
4290 | signal(SIGSEGV, traceback); |
4291 | |
4292 | int i = 0; |
4293 | for (int j = 1; j < argc; j++) |
4294 | i += strlen(argv[j]) + 1; |
4295 | saved_command_line = malloc(i); |
4296 | if (!saved_command_line) { |
4297 | fprintf(stderr, "grubby: %m\n"); |
4298 | exit(1); |
4299 | } |
4300 | saved_command_line[0] = '\0'; |
4301 | for (int j = 1; j < argc; j++) { |
4302 | strcat(saved_command_line, argv[j]); |
4303 | strncat(saved_command_line, j == argc -1 ? "" : " ", 1); |
4304 | } |
4305 | |
4306 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
4307 | poptReadDefaultConfig(optCon, 1); |
4308 | |
4309 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
4310 | switch (arg) { |
4311 | case 'v': |
4312 | printf("grubby version %s\n", VERSION); |
4313 | exit(0); |
4314 | break; |
4315 | case 'i': |
4316 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { |
4317 | extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon)); |
4318 | } else { |
4319 | fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount); |
4320 | return 1; |
4321 | } |
4322 | break; |
4323 | } |
4324 | } |
4325 | |
4326 | if (arg < -1) { |
4327 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
4328 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
4329 | poptStrerror(arg)); |
4330 | return 1; |
4331 | } |
4332 | |
4333 | if ((chptr = poptGetArg(optCon))) { |
4334 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
4335 | return 1; |
4336 | } |
4337 | |
4338 | if ((configureLilo + configureGrub2 + configureGrub + configureELilo + |
4339 | configureYaboot + configureSilo + configureZipl + |
4340 | configureExtLinux ) > 1) { |
4341 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); |
4342 | return 1; |
4343 | } else if (bootloaderProbe && grubConfig) { |
4344 | fprintf(stderr, |
4345 | _("grubby: cannot specify config file with --bootloader-probe\n")); |
4346 | return 1; |
4347 | } else if (configureGrub2) { |
4348 | cfi = &grub2ConfigType; |
4349 | if (envPath) |
4350 | cfi->envFile = envPath; |
4351 | } else if (configureLilo) { |
4352 | cfi = &liloConfigType; |
4353 | } else if (configureGrub) { |
4354 | cfi = &grubConfigType; |
4355 | } else if (configureELilo) { |
4356 | cfi = &eliloConfigType; |
4357 | } else if (configureYaboot) { |
4358 | cfi = &yabootConfigType; |
4359 | } else if (configureSilo) { |
4360 | cfi = &siloConfigType; |
4361 | } else if (configureZipl) { |
4362 | cfi = &ziplConfigType; |
4363 | } else if (configureExtLinux) { |
4364 | cfi = &extlinuxConfigType; |
4365 | useextlinuxmenu=1; |
4366 | } |
4367 | |
4368 | if (!cfi) { |
4369 | if (grub2FindConfig(&grub2ConfigType)) |
4370 | cfi = &grub2ConfigType; |
4371 | else |
4372 | #ifdef __ia64__ |
4373 | cfi = &eliloConfigType; |
4374 | #elif __powerpc__ |
4375 | cfi = &yabootConfigType; |
4376 | #elif __sparc__ |
4377 | cfi = &siloConfigType; |
4378 | #elif __s390__ |
4379 | cfi = &ziplConfigType; |
4380 | #elif __s390x__ |
4381 | cfi = &ziplConfigtype; |
4382 | #else |
4383 | cfi = &grubConfigType; |
4384 | #endif |
4385 | } |
4386 | |
4387 | if (!grubConfig) { |
4388 | if (cfi->findConfig) |
4389 | grubConfig = cfi->findConfig(cfi); |
4390 | if (!grubConfig) |
4391 | grubConfig = cfi->defaultConfig; |
4392 | } |
4393 | |
4394 | if (bootloaderProbe && (displayDefault || kernelInfo || |
4395 | newKernelPath || removeKernelPath || makeDefault || |
4396 | defaultKernel || displayDefaultIndex || displayDefaultTitle || |
4397 | (defaultIndex >= 0))) { |
4398 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " |
4399 | "specified option")); |
4400 | return 1; |
4401 | } |
4402 | |
4403 | if ((displayDefault || kernelInfo) && (newKernelPath || |
4404 | removeKernelPath)) { |
4405 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
4406 | "be used when adding or removing kernels\n")); |
4407 | return 1; |
4408 | } |
4409 | |
4410 | if (newKernelPath && !newKernelTitle) { |
4411 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
4412 | return 1; |
4413 | } else if (!newKernelPath && (newKernelTitle || copyDefault || |
4414 | (newKernelInitrd && !updateKernelPath)|| |
4415 | makeDefault || extraInitrdCount > 0)) { |
4416 | fprintf(stderr, _("grubby: kernel path expected\n")); |
4417 | return 1; |
4418 | } |
4419 | |
4420 | if (newKernelPath && updateKernelPath) { |
4421 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
4422 | "not be used together")); |
4423 | return 1; |
4424 | } |
4425 | |
4426 | if (makeDefault && defaultKernel) { |
4427 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
4428 | "may not be used together\n")); |
4429 | return 1; |
4430 | } else if (defaultKernel && removeKernelPath && |
4431 | !strcmp(defaultKernel, removeKernelPath)) { |
4432 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); |
4433 | return 1; |
4434 | } else if (defaultKernel && newKernelPath && |
4435 | !strcmp(defaultKernel, newKernelPath)) { |
4436 | makeDefault = 1; |
4437 | defaultKernel = NULL; |
4438 | } |
4439 | else if (defaultKernel && (defaultIndex >= 0)) { |
4440 | fprintf(stderr, _("grubby: --set-default and --set-default-index " |
4441 | "may not be used together\n")); |
4442 | return 1; |
4443 | } |
4444 | |
4445 | if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) { |
4446 | fprintf(stderr, _("grubby: output file must be specified if stdin " |
4447 | "is used\n")); |
4448 | return 1; |
4449 | } |
4450 | |
4451 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel |
4452 | && !kernelInfo && !bootloaderProbe && !updateKernelPath |
4453 | && !removeMBKernel && !displayDefaultIndex && !displayDefaultTitle |
4454 | && (defaultIndex == -1)) { |
4455 | fprintf(stderr, _("grubby: no action specified\n")); |
4456 | return 1; |
4457 | } |
4458 | |
4459 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
4460 | |
4461 | if (cfi->needsBootPrefix) { |
4462 | if (!bootPrefix) { |
4463 | bootPrefix = findBootPrefix(); |
4464 | if (!bootPrefix) return 1; |
4465 | } else { |
4466 | /* this shouldn't end with a / */ |
4467 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
4468 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
4469 | } |
4470 | } else { |
4471 | bootPrefix = ""; |
4472 | } |
4473 | |
4474 | if (!cfi->mbAllowExtraInitRds && |
4475 | extraInitrdCount > 0) { |
4476 | fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig); |
4477 | return 1; |
4478 | } |
4479 | |
4480 | if (bootloaderProbe) { |
4481 | int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0; |
4482 | struct grubConfig * lconfig, * gconfig, * yconfig, * econfig; |
4483 | |
4484 | const char *grub2config = grub2FindConfig(&grub2ConfigType); |
4485 | if (grub2config) { |
4486 | gconfig = readConfig(grub2config, &grub2ConfigType); |
4487 | if (!gconfig) |
4488 | gr2c = 1; |
4489 | else |
4490 | gr2c = checkForGrub2(gconfig); |
4491 | } |
4492 | |
4493 | const char *grubconfig = grubFindConfig(&grubConfigType); |
4494 | if (!access(grubconfig, F_OK)) { |
4495 | gconfig = readConfig(grubconfig, &grubConfigType); |
4496 | if (!gconfig) |
4497 | grc = 1; |
4498 | else |
4499 | grc = checkForGrub(gconfig); |
4500 | } |
4501 | |
4502 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
4503 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); |
4504 | if (!lconfig) |
4505 | lrc = 1; |
4506 | else |
4507 | lrc = checkForLilo(lconfig); |
4508 | } |
4509 | |
4510 | if (!access(eliloConfigType.defaultConfig, F_OK)) { |
4511 | econfig = readConfig(eliloConfigType.defaultConfig, |
4512 | &eliloConfigType); |
4513 | if (!econfig) |
4514 | erc = 1; |
4515 | else |
4516 | erc = checkForElilo(econfig); |
4517 | } |
4518 | |
4519 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
4520 | lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType); |
4521 | if (!lconfig) |
4522 | extrc = 1; |
4523 | else |
4524 | extrc = checkForExtLinux(lconfig); |
4525 | } |
4526 | |
4527 | |
4528 | if (!access(yabootConfigType.defaultConfig, F_OK)) { |
4529 | yconfig = readConfig(yabootConfigType.defaultConfig, |
4530 | &yabootConfigType); |
4531 | if (!yconfig) |
4532 | yrc = 1; |
4533 | else |
4534 | yrc = checkForYaboot(yconfig); |
4535 | } |
4536 | |
4537 | if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1 || |
4538 | erc == 1) |
4539 | return 1; |
4540 | |
4541 | if (lrc == 2) printf("lilo\n"); |
4542 | if (gr2c == 2) printf("grub2\n"); |
4543 | if (grc == 2) printf("grub\n"); |
4544 | if (extrc == 2) printf("extlinux\n"); |
4545 | if (yrc == 2) printf("yaboot\n"); |
4546 | if (erc == 2) printf("elilo\n"); |
4547 | |
4548 | return 0; |
4549 | } |
4550 | |
4551 | if (grubConfig == NULL) { |
4552 | printf("Could not find bootloader configuration file.\n"); |
4553 | exit(1); |
4554 | } |
4555 | |
4556 | config = readConfig(grubConfig, cfi); |
4557 | if (!config) return 1; |
4558 | |
4559 | if (displayDefault) { |
4560 | struct singleLine * line; |
4561 | struct singleEntry * entry; |
4562 | char * rootspec; |
4563 | |
4564 | if (config->defaultImage == -1) return 0; |
4565 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
4566 | cfi->defaultIsSaved) |
4567 | config->defaultImage = 0; |
4568 | entry = findEntryByIndex(config, config->defaultImage); |
4569 | if (!entry) return 0; |
4570 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; |
4571 | |
4572 | line = getLineByType(LT_KERNEL|LT_HYPER|LT_KERNEL_EFI|LT_KERNEL_16, entry->lines); |
4573 | if (!line) return 0; |
4574 | |
4575 | rootspec = getRootSpecifier(line->elements[1].item); |
4576 | printf("%s%s\n", bootPrefix, line->elements[1].item + |
4577 | ((rootspec != NULL) ? strlen(rootspec) : 0)); |
4578 | |
4579 | return 0; |
4580 | |
4581 | } else if (displayDefaultTitle) { |
4582 | struct singleLine * line; |
4583 | struct singleEntry * entry; |
4584 | |
4585 | if (config->defaultImage == -1) return 0; |
4586 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
4587 | cfi->defaultIsSaved) |
4588 | config->defaultImage = 0; |
4589 | entry = findEntryByIndex(config, config->defaultImage); |
4590 | if (!entry) return 0; |
4591 | |
4592 | if (!configureGrub2) { |
4593 | line = getLineByType(LT_TITLE, entry->lines); |
4594 | if (!line) return 0; |
4595 | printf("%s\n", line->elements[1].item); |
4596 | |
4597 | } else { |
4598 | char * title; |
4599 | |
4600 | dbgPrintf("This is GRUB2, default title is embeded in menuentry\n"); |
4601 | line = getLineByType(LT_MENUENTRY, entry->lines); |
4602 | if (!line) return 0; |
4603 | title = grub2ExtractTitle(line); |
4604 | if (title) |
4605 | printf("%s\n", title); |
4606 | } |
4607 | return 0; |
4608 | |
4609 | } else if (displayDefaultIndex) { |
4610 | if (config->defaultImage == -1) return 0; |
4611 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
4612 | cfi->defaultIsSaved) |
4613 | config->defaultImage = 0; |
4614 | printf("%i\n", config->defaultImage); |
4615 | return 0; |
4616 | |
4617 | } else if (kernelInfo) |
4618 | return displayInfo(config, kernelInfo, bootPrefix); |
4619 | |
4620 | if (copyDefault) { |
4621 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
4622 | if (!template) return 1; |
4623 | } |
4624 | |
4625 | markRemovedImage(config, removeKernelPath, bootPrefix); |
4626 | markRemovedImage(config, removeMBKernel, bootPrefix); |
4627 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, |
4628 | bootPrefix, flags, defaultIndex); |
4629 | setFallbackImage(config, newKernelPath != NULL); |
4630 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
4631 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; |
4632 | if (updateKernelPath && newKernelInitrd) { |
4633 | if (newMBKernel) { |
4634 | if (addMBInitrd(config, newMBKernel, updateKernelPath, |
4635 | bootPrefix, newKernelInitrd)) |
4636 | return 1; |
4637 | } else { |
4638 | if (updateInitrd(config, updateKernelPath, bootPrefix, |
4639 | newKernelInitrd)) |
4640 | return 1; |
4641 | } |
4642 | } |
4643 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
4644 | newKernelTitle, newKernelArgs, newKernelInitrd, |
4645 | (const char **)extraInitrds, extraInitrdCount, |
4646 | newMBKernel, newMBKernelArgs, newDevTreePath)) return 1; |
4647 | |
4648 | |
4649 | if (numEntries(config) == 0) { |
4650 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " |
4651 | "Not writing out new config.\n")); |
4652 | return 1; |
4653 | } |
4654 | |
4655 | if (!outputFile) |
4656 | outputFile = (char *)grubConfig; |
4657 | |
4658 | return writeConfig(config, outputFile, bootPrefix); |
4659 | } |