Contents of /trunk/grubby/grubby.c
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Tue Jul 7 11:25:03 2020 UTC (3 years, 11 months ago) by niro
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Tue Jul 7 11:25:03 2020 UTC (3 years, 11 months ago) by niro
File MIME type: text/plain
File size: 138934 byte(s)
Print default image even if isn't a suitable one
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 | const char *mounts = "/proc/mounts"; |
72 | |
73 | /* comments get lumped in with indention */ |
74 | struct lineElement { |
75 | char *item; |
76 | char *indent; |
77 | }; |
78 | |
79 | enum lineType_e { |
80 | LT_UNIDENTIFIED = 0, |
81 | LT_WHITESPACE = 1 << 0, |
82 | LT_TITLE = 1 << 1, |
83 | LT_KERNEL = 1 << 2, |
84 | LT_INITRD = 1 << 3, |
85 | LT_HYPER = 1 << 4, |
86 | LT_DEFAULT = 1 << 5, |
87 | LT_MBMODULE = 1 << 6, |
88 | LT_ROOT = 1 << 7, |
89 | LT_FALLBACK = 1 << 8, |
90 | LT_KERNELARGS = 1 << 9, |
91 | LT_BOOT = 1 << 10, |
92 | LT_BOOTROOT = 1 << 11, |
93 | LT_LBA = 1 << 12, |
94 | LT_OTHER = 1 << 13, |
95 | LT_GENERIC = 1 << 14, |
96 | LT_ECHO = 1 << 16, |
97 | LT_MENUENTRY = 1 << 17, |
98 | LT_ENTRY_END = 1 << 18, |
99 | LT_SET_VARIABLE = 1 << 19, |
100 | LT_KERNEL_EFI = 1 << 20, |
101 | LT_INITRD_EFI = 1 << 21, |
102 | LT_KERNEL_16 = 1 << 22, |
103 | LT_INITRD_16 = 1 << 23, |
104 | LT_DEVTREE = 1 << 24, |
105 | LT_UNKNOWN = 1 << 25, |
106 | }; |
107 | |
108 | struct singleLine { |
109 | char *indent; |
110 | int numElements; |
111 | struct lineElement *elements; |
112 | struct singleLine *next; |
113 | enum lineType_e type; |
114 | }; |
115 | |
116 | struct singleEntry { |
117 | struct singleLine *lines; |
118 | int skip; |
119 | int multiboot; |
120 | struct singleEntry *next; |
121 | }; |
122 | |
123 | #define GRUBBY_BADIMAGE_OKAY (1 << 0) |
124 | |
125 | #define GRUB_CONFIG_NO_DEFAULT (1 << 0) /* don't write out default=0 */ |
126 | |
127 | /* These defines are (only) used in addNewKernel() */ |
128 | #define NEED_KERNEL (1 << 0) |
129 | #define NEED_INITRD (1 << 1) |
130 | #define NEED_TITLE (1 << 2) |
131 | #define NEED_ARGS (1 << 3) |
132 | #define NEED_MB (1 << 4) |
133 | #define NEED_END (1 << 5) |
134 | #define NEED_DEVTREE (1 << 6) |
135 | |
136 | #define MAIN_DEFAULT (1 << 0) |
137 | #define FIRST_ENTRY_INDEX 0 /* boot entry index value begin and increment |
138 | from this initial value */ |
139 | #define NO_DEFAULT_ENTRY -1 /* indicates that no specific default boot |
140 | entry was set or currently exists */ |
141 | #define DEFAULT_SAVED -2 |
142 | #define DEFAULT_SAVED_GRUB2 -3 |
143 | |
144 | struct keywordTypes { |
145 | char *key; |
146 | enum lineType_e type; |
147 | char nextChar; |
148 | char separatorChar; |
149 | }; |
150 | |
151 | struct configFileInfo; |
152 | |
153 | typedef const char *(*findConfigFunc) (struct configFileInfo *); |
154 | typedef const int (*writeLineFunc) (struct configFileInfo *, |
155 | struct singleLine * line); |
156 | typedef char *(*getEnvFunc) (struct configFileInfo *, char *name); |
157 | typedef int (*setEnvFunc) (struct configFileInfo *, char *name, char *value); |
158 | |
159 | struct configFileInfo { |
160 | char *defaultConfig; |
161 | findConfigFunc findConfig; |
162 | writeLineFunc writeLine; |
163 | getEnvFunc getEnv; |
164 | setEnvFunc setEnv; |
165 | struct keywordTypes *keywords; |
166 | int caseInsensitive; |
167 | int defaultIsIndex; |
168 | int defaultIsVariable; |
169 | int defaultSupportSaved; |
170 | int defaultIsSaved; |
171 | int defaultIsUnquoted; |
172 | enum lineType_e entryStart; |
173 | enum lineType_e entryEnd; |
174 | int needsBootPrefix; |
175 | int argsInQuotes; |
176 | int maxTitleLength; |
177 | int titleBracketed; |
178 | int titlePosition; |
179 | int mbHyperFirst; |
180 | int mbInitRdIsModule; |
181 | int mbConcatArgs; |
182 | int mbAllowExtraInitRds; |
183 | char *envFile; |
184 | }; |
185 | |
186 | struct keywordTypes grubKeywords[] = { |
187 | {"title", LT_TITLE, ' '}, |
188 | {"root", LT_BOOTROOT, ' '}, |
189 | {"default", LT_DEFAULT, ' '}, |
190 | {"fallback", LT_FALLBACK, ' '}, |
191 | {"kernel", LT_KERNEL, ' '}, |
192 | {"initrd", LT_INITRD, ' ', ' '}, |
193 | {"module", LT_MBMODULE, ' '}, |
194 | {"kernel", LT_HYPER, ' '}, |
195 | {NULL, 0, 0}, |
196 | }; |
197 | |
198 | const char *grubFindConfig(struct configFileInfo *cfi) |
199 | { |
200 | static const char *configFiles[] = { |
201 | "/boot/grub/grub.conf", |
202 | "/boot/grub/menu.lst", |
203 | "/etc/grub.conf", |
204 | NULL |
205 | }; |
206 | static int i = -1; |
207 | |
208 | if (i == -1) { |
209 | for (i = 0; configFiles[i] != NULL; i++) { |
210 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
211 | if (!access(configFiles[i], R_OK)) { |
212 | dbgPrintf("found\n"); |
213 | return configFiles[i]; |
214 | } |
215 | dbgPrintf("not found\n"); |
216 | } |
217 | } |
218 | return configFiles[i]; |
219 | } |
220 | |
221 | struct configFileInfo grubConfigType = { |
222 | .findConfig = grubFindConfig, |
223 | .keywords = grubKeywords, |
224 | .defaultIsIndex = 1, |
225 | .defaultSupportSaved = 1, |
226 | .entryStart = LT_TITLE, |
227 | .needsBootPrefix = 1, |
228 | .mbHyperFirst = 1, |
229 | .mbInitRdIsModule = 1, |
230 | .mbAllowExtraInitRds = 1, |
231 | .titlePosition = 1, |
232 | }; |
233 | |
234 | struct keywordTypes grub2Keywords[] = { |
235 | {"menuentry", LT_MENUENTRY, ' '}, |
236 | {"}", LT_ENTRY_END, ' '}, |
237 | {"echo", LT_ECHO, ' '}, |
238 | {"set", LT_SET_VARIABLE, ' ', '='}, |
239 | {"root", LT_BOOTROOT, ' '}, |
240 | {"default", LT_DEFAULT, ' '}, |
241 | {"fallback", LT_FALLBACK, ' '}, |
242 | {"linux", LT_KERNEL, ' '}, |
243 | {"linuxefi", LT_KERNEL_EFI, ' '}, |
244 | {"linux16", LT_KERNEL_16, ' '}, |
245 | {"initrd", LT_INITRD, ' ', ' '}, |
246 | {"initrdefi", LT_INITRD_EFI, ' ', ' '}, |
247 | {"initrd16", LT_INITRD_16, ' ', ' '}, |
248 | {"module", LT_MBMODULE, ' '}, |
249 | {"kernel", LT_HYPER, ' '}, |
250 | {"devicetree", LT_DEVTREE, ' '}, |
251 | {NULL, 0, 0}, |
252 | }; |
253 | |
254 | const char *grub2FindConfig(struct configFileInfo *cfi) |
255 | { |
256 | static const char *configFiles[] = { |
257 | "/boot/grub/grub-efi.cfg", |
258 | "/boot/grub/grub.cfg", |
259 | "/etc/grub2-efi.cfg", |
260 | "/etc/grub2.cfg", |
261 | "/boot/grub2/grub.cfg", |
262 | "/boot/grub2-efi/grub.cfg", |
263 | NULL |
264 | }; |
265 | static int i = -1; |
266 | static const char *grub_cfg = "/boot/grub/grub.cfg"; |
267 | int rc = -1; |
268 | |
269 | if (i == -1) { |
270 | for (i = 0; configFiles[i] != NULL; i++) { |
271 | dbgPrintf("Checking \"%s\": ", configFiles[i]); |
272 | if ((rc = access(configFiles[i], R_OK))) { |
273 | if (errno == EACCES) { |
274 | printf |
275 | ("Unable to access bootloader configuration file " |
276 | "\"%s\": %m\n", configFiles[i]); |
277 | exit(1); |
278 | } |
279 | continue; |
280 | } else { |
281 | dbgPrintf("found\n"); |
282 | return configFiles[i]; |
283 | } |
284 | } |
285 | } |
286 | |
287 | /* Ubuntu renames grub2 to grub, so check for the grub.d directory |
288 | * that isn't in grub1, and if it exists, return the config file path |
289 | * that they use. */ |
290 | if (configFiles[i] == NULL && !access("/etc/grub.d/", R_OK)) { |
291 | dbgPrintf("found\n"); |
292 | return grub_cfg; |
293 | } |
294 | |
295 | dbgPrintf("not found\n"); |
296 | return configFiles[i]; |
297 | } |
298 | |
299 | /* kind of hacky. It'll give the first 1024 bytes, ish. */ |
300 | static char *grub2GetEnv(struct configFileInfo *info, char *name) |
301 | { |
302 | static char buf[1025]; |
303 | char *s = NULL; |
304 | char *ret = NULL; |
305 | char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv"; |
306 | int rc = |
307 | asprintf(&s, "grub-editenv %s list | grep '^%s='", envFile, name); |
308 | |
309 | if (rc < 0) |
310 | return NULL; |
311 | |
312 | FILE *f = popen(s, "r"); |
313 | if (!f) |
314 | goto out; |
315 | |
316 | memset(buf, '\0', sizeof(buf)); |
317 | ret = fgets(buf, 1024, f); |
318 | pclose(f); |
319 | |
320 | if (ret) { |
321 | ret += strlen(name) + 1; |
322 | ret[strlen(ret) - 1] = '\0'; |
323 | } |
324 | dbgPrintf("grub2GetEnv(%s): %s\n", name, ret); |
325 | out: |
326 | free(s); |
327 | return ret; |
328 | } |
329 | |
330 | static int sPopCount(const char *s, const char *c) |
331 | { |
332 | int ret = 0; |
333 | if (!s) |
334 | return -1; |
335 | for (int i = 0; s[i] != '\0'; i++) |
336 | for (int j = 0; c[j] != '\0'; j++) |
337 | if (s[i] == c[j]) |
338 | ret++; |
339 | return ret; |
340 | } |
341 | |
342 | static char *shellEscape(const char *s) |
343 | { |
344 | int l = strlen(s) + sPopCount(s, "'") * 2; |
345 | |
346 | char *ret = calloc(l + 1, sizeof(*ret)); |
347 | if (!ret) |
348 | return NULL; |
349 | for (int i = 0, j = 0; s[i] != '\0'; i++, j++) { |
350 | if (s[i] == '\'') |
351 | ret[j++] = '\\'; |
352 | ret[j] = s[i]; |
353 | } |
354 | return ret; |
355 | } |
356 | |
357 | static void unquote(char *s) |
358 | { |
359 | int l = strlen(s); |
360 | |
361 | if ((s[l - 1] == '\'' && s[0] == '\'') |
362 | || (s[l - 1] == '"' && s[0] == '"')) { |
363 | memmove(s, s + 1, l - 2); |
364 | s[l - 2] = '\0'; |
365 | } |
366 | } |
367 | |
368 | static int grub2SetEnv(struct configFileInfo *info, char *name, char *value) |
369 | { |
370 | char *s = NULL; |
371 | int rc = 0; |
372 | char *envFile = info->envFile ? info->envFile : "/boot/grub/grubenv"; |
373 | |
374 | unquote(value); |
375 | value = shellEscape(value); |
376 | if (!value) |
377 | return -1; |
378 | |
379 | rc = asprintf(&s, "grub-editenv %s set '%s=%s'", envFile, name, value); |
380 | free(value); |
381 | if (rc < 0) |
382 | return -1; |
383 | |
384 | dbgPrintf("grub2SetEnv(%s): %s\n", name, s); |
385 | rc = system(s); |
386 | free(s); |
387 | return rc; |
388 | } |
389 | |
390 | /* this is a gigantic hack to avoid clobbering grub2 variables... */ |
391 | static int is_special_grub2_variable(const char *name) |
392 | { |
393 | if (!strcmp(name, "\"${next_entry}\"")) |
394 | return 1; |
395 | if (!strcmp(name, "\"${prev_saved_entry}\"")) |
396 | return 1; |
397 | return 0; |
398 | } |
399 | |
400 | int sizeOfSingleLine(struct singleLine *line) |
401 | { |
402 | int count = 0; |
403 | |
404 | for (int i = 0; i < line->numElements; i++) { |
405 | int indentSize = 0; |
406 | |
407 | count = count + strlen(line->elements[i].item); |
408 | |
409 | indentSize = strlen(line->elements[i].indent); |
410 | if (indentSize > 0) |
411 | count = count + indentSize; |
412 | else |
413 | /* be extra safe and add room for whitespaces */ |
414 | count = count + 1; |
415 | } |
416 | |
417 | /* room for trailing terminator */ |
418 | count = count + 1; |
419 | |
420 | return count; |
421 | } |
422 | |
423 | static int isquote(char q) |
424 | { |
425 | if (q == '\'' || q == '\"') |
426 | return 1; |
427 | return 0; |
428 | } |
429 | |
430 | static int iskernel(enum lineType_e type) |
431 | { |
432 | return (type == LT_KERNEL || type == LT_KERNEL_EFI |
433 | || type == LT_KERNEL_16); |
434 | } |
435 | |
436 | static int isinitrd(enum lineType_e type) |
437 | { |
438 | return (type == LT_INITRD || type == LT_INITRD_EFI |
439 | || type == LT_INITRD_16); |
440 | } |
441 | |
442 | char *grub2ExtractTitle(struct singleLine *line) |
443 | { |
444 | char *current; |
445 | char *current_indent; |
446 | int current_len; |
447 | int current_indent_len; |
448 | int i; |
449 | |
450 | /* bail out if line does not start with menuentry */ |
451 | if (strcmp(line->elements[0].item, "menuentry")) |
452 | return NULL; |
453 | |
454 | i = 1; |
455 | current = line->elements[i].item; |
456 | current_len = strlen(current); |
457 | |
458 | /* if second word is quoted, strip the quotes and return single word */ |
459 | if (isquote(*current) && isquote(current[current_len - 1])) { |
460 | char *tmp; |
461 | |
462 | tmp = strdup(current + 1); |
463 | if (!tmp) |
464 | return NULL; |
465 | tmp[strlen(tmp) - 1] = '\0'; |
466 | return tmp; |
467 | } |
468 | |
469 | /* if no quotes, return second word verbatim */ |
470 | if (!isquote(*current)) |
471 | return current; |
472 | |
473 | /* second element start with a quote, so we have to find the element |
474 | * whose last character is also quote (assuming it's the closing one) */ |
475 | int resultMaxSize; |
476 | char *result; |
477 | /* need to ensure that ' does not match " as we search */ |
478 | char quote_char = *current; |
479 | |
480 | resultMaxSize = sizeOfSingleLine(line); |
481 | result = malloc(resultMaxSize); |
482 | snprintf(result, resultMaxSize, "%s", ++current); |
483 | |
484 | i++; |
485 | int result_len = 0; |
486 | for (; i < line->numElements; ++i) { |
487 | current = line->elements[i].item; |
488 | current_len = strlen(current); |
489 | current_indent = line->elements[i].indent; |
490 | current_indent_len = strlen(current_indent); |
491 | |
492 | memcpy(result + result_len, current_indent, current_indent_len); |
493 | result_len += current_indent_len; |
494 | |
495 | if (current[current_len - 1] != quote_char) { |
496 | memcpy(result + result_len, current_indent, |
497 | current_indent_len); |
498 | result_len += current_len; |
499 | } else { |
500 | memcpy(result + result_len, current_indent, |
501 | current_indent_len); |
502 | result_len += (current_len - 1); |
503 | break; |
504 | } |
505 | } |
506 | result[result_len] = '\0'; |
507 | return result; |
508 | } |
509 | |
510 | struct configFileInfo grub2ConfigType = { |
511 | .findConfig = grub2FindConfig, |
512 | .getEnv = grub2GetEnv, |
513 | .setEnv = grub2SetEnv, |
514 | .keywords = grub2Keywords, |
515 | .defaultIsIndex = 1, |
516 | .defaultSupportSaved = 1, |
517 | .defaultIsVariable = 1, |
518 | .entryStart = LT_MENUENTRY, |
519 | .entryEnd = LT_ENTRY_END, |
520 | .titlePosition = 1, |
521 | .needsBootPrefix = 1, |
522 | .mbHyperFirst = 1, |
523 | .mbInitRdIsModule = 1, |
524 | .mbAllowExtraInitRds = 1, |
525 | }; |
526 | |
527 | struct keywordTypes yabootKeywords[] = { |
528 | {"label", LT_TITLE, '='}, |
529 | {"root", LT_ROOT, '='}, |
530 | {"default", LT_DEFAULT, '='}, |
531 | {"image", LT_KERNEL, '='}, |
532 | {"bsd", LT_GENERIC, '='}, |
533 | {"macos", LT_GENERIC, '='}, |
534 | {"macosx", LT_GENERIC, '='}, |
535 | {"magicboot", LT_GENERIC, '='}, |
536 | {"darwin", LT_GENERIC, '='}, |
537 | {"timeout", LT_GENERIC, '='}, |
538 | {"install", LT_GENERIC, '='}, |
539 | {"fstype", LT_GENERIC, '='}, |
540 | {"hfstype", LT_GENERIC, '='}, |
541 | {"delay", LT_GENERIC, '='}, |
542 | {"defaultos", LT_GENERIC, '='}, |
543 | {"init-message", LT_GENERIC, '='}, |
544 | {"enablecdboot", LT_GENERIC, ' '}, |
545 | {"enableofboot", LT_GENERIC, ' '}, |
546 | {"enablenetboot", LT_GENERIC, ' '}, |
547 | {"nonvram", LT_GENERIC, ' '}, |
548 | {"hide", LT_GENERIC, ' '}, |
549 | {"protect", LT_GENERIC, ' '}, |
550 | {"nobless", LT_GENERIC, ' '}, |
551 | {"nonvram", LT_GENERIC, ' '}, |
552 | {"brokenosx", LT_GENERIC, ' '}, |
553 | {"usemount", LT_GENERIC, ' '}, |
554 | {"mntpoint", LT_GENERIC, '='}, |
555 | {"partition", LT_GENERIC, '='}, |
556 | {"device", LT_GENERIC, '='}, |
557 | {"fstype", LT_GENERIC, '='}, |
558 | {"initrd", LT_INITRD, '=', ';'}, |
559 | {"append", LT_KERNELARGS, '='}, |
560 | {"boot", LT_BOOT, '='}, |
561 | {"lba", LT_LBA, ' '}, |
562 | {NULL, 0, 0}, |
563 | }; |
564 | |
565 | struct keywordTypes liloKeywords[] = { |
566 | {"label", LT_TITLE, '='}, |
567 | {"root", LT_ROOT, '='}, |
568 | {"default", LT_DEFAULT, '='}, |
569 | {"image", LT_KERNEL, '='}, |
570 | {"other", LT_OTHER, '='}, |
571 | {"initrd", LT_INITRD, '='}, |
572 | {"append", LT_KERNELARGS, '='}, |
573 | {"boot", LT_BOOT, '='}, |
574 | {"lba", LT_LBA, ' '}, |
575 | {NULL, 0, 0}, |
576 | }; |
577 | |
578 | struct keywordTypes eliloKeywords[] = { |
579 | {"label", LT_TITLE, '='}, |
580 | {"root", LT_ROOT, '='}, |
581 | {"default", LT_DEFAULT, '='}, |
582 | {"image", LT_KERNEL, '='}, |
583 | {"initrd", LT_INITRD, '='}, |
584 | {"append", LT_KERNELARGS, '='}, |
585 | {"vmm", LT_HYPER, '='}, |
586 | {NULL, 0, 0}, |
587 | }; |
588 | |
589 | struct keywordTypes siloKeywords[] = { |
590 | {"label", LT_TITLE, '='}, |
591 | {"root", LT_ROOT, '='}, |
592 | {"default", LT_DEFAULT, '='}, |
593 | {"image", LT_KERNEL, '='}, |
594 | {"other", LT_OTHER, '='}, |
595 | {"initrd", LT_INITRD, '='}, |
596 | {"append", LT_KERNELARGS, '='}, |
597 | {"boot", LT_BOOT, '='}, |
598 | {NULL, 0, 0}, |
599 | }; |
600 | |
601 | struct keywordTypes ziplKeywords[] = { |
602 | {"target", LT_BOOTROOT, '='}, |
603 | {"image", LT_KERNEL, '='}, |
604 | {"ramdisk", LT_INITRD, '='}, |
605 | {"parameters", LT_KERNELARGS, '='}, |
606 | {"default", LT_DEFAULT, '='}, |
607 | {NULL, 0, 0}, |
608 | }; |
609 | |
610 | struct keywordTypes extlinuxKeywords[] = { |
611 | {"label", LT_TITLE, ' '}, |
612 | {"root", LT_ROOT, ' '}, |
613 | {"default", LT_DEFAULT, ' '}, |
614 | {"kernel", LT_KERNEL, ' '}, |
615 | {"initrd", LT_INITRD, ' ', ','}, |
616 | {"append", LT_KERNELARGS, ' '}, |
617 | {"prompt", LT_UNKNOWN, ' '}, |
618 | {"fdt", LT_DEVTREE, ' '}, |
619 | {"fdtdir", LT_DEVTREE, ' '}, |
620 | {NULL, 0, 0}, |
621 | }; |
622 | |
623 | int useextlinuxmenu; |
624 | struct configFileInfo eliloConfigType = { |
625 | .defaultConfig = "/boot/efi/EFI/redhat/elilo.conf", |
626 | .keywords = eliloKeywords, |
627 | .entryStart = LT_KERNEL, |
628 | .needsBootPrefix = 1, |
629 | .argsInQuotes = 1, |
630 | .mbConcatArgs = 1, |
631 | .titlePosition = 1, |
632 | }; |
633 | |
634 | struct configFileInfo liloConfigType = { |
635 | .defaultConfig = "/etc/lilo.conf", |
636 | .keywords = liloKeywords, |
637 | .entryStart = LT_KERNEL, |
638 | .argsInQuotes = 1, |
639 | .maxTitleLength = 15, |
640 | .titlePosition = 1, |
641 | }; |
642 | |
643 | struct configFileInfo yabootConfigType = { |
644 | .defaultConfig = "/etc/yaboot.conf", |
645 | .keywords = yabootKeywords, |
646 | .entryStart = LT_KERNEL, |
647 | .needsBootPrefix = 1, |
648 | .argsInQuotes = 1, |
649 | .maxTitleLength = 15, |
650 | .mbAllowExtraInitRds = 1, |
651 | .titlePosition = 1, |
652 | }; |
653 | |
654 | struct configFileInfo siloConfigType = { |
655 | .defaultConfig = "/etc/silo.conf", |
656 | .keywords = siloKeywords, |
657 | .entryStart = LT_KERNEL, |
658 | .needsBootPrefix = 1, |
659 | .argsInQuotes = 1, |
660 | .maxTitleLength = 15, |
661 | .titlePosition = 1, |
662 | }; |
663 | |
664 | struct configFileInfo ziplConfigType = { |
665 | .defaultConfig = "/etc/zipl.conf", |
666 | .keywords = ziplKeywords, |
667 | .entryStart = LT_TITLE, |
668 | .argsInQuotes = 1, |
669 | .titleBracketed = 1, |
670 | }; |
671 | |
672 | struct configFileInfo extlinuxConfigType = { |
673 | .defaultConfig = "/boot/extlinux/extlinux.conf", |
674 | .keywords = extlinuxKeywords, |
675 | .caseInsensitive = 1, |
676 | .entryStart = LT_TITLE, |
677 | .needsBootPrefix = 1, |
678 | .maxTitleLength = 255, |
679 | .mbAllowExtraInitRds = 1, |
680 | .defaultIsUnquoted = 1, |
681 | .titlePosition = 1, |
682 | }; |
683 | |
684 | struct grubConfig { |
685 | struct singleLine *theLines; |
686 | struct singleEntry *entries; |
687 | char *primaryIndent; |
688 | char *secondaryIndent; |
689 | int defaultImage; /* -1 if none specified -- this value is |
690 | * written out, overriding original */ |
691 | int fallbackImage; /* just like defaultImage */ |
692 | int flags; |
693 | struct configFileInfo *cfi; |
694 | int isModified; /* assumes only one entry added |
695 | per invocation of grubby */ |
696 | }; |
697 | |
698 | blkid_cache blkid; |
699 | |
700 | struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index); |
701 | struct singleEntry *findEntryByPath(struct grubConfig *cfg, |
702 | const char *path, const char *prefix, |
703 | int *index); |
704 | struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title, |
705 | int *index); |
706 | static int readFile(int fd, char **bufPtr); |
707 | static void lineInit(struct singleLine *line); |
708 | struct singleLine *lineDup(struct singleLine *line); |
709 | static void lineFree(struct singleLine *line); |
710 | static int lineWrite(FILE * out, struct singleLine *line, |
711 | struct configFileInfo *cfi); |
712 | static int getNextLine(char **bufPtr, struct singleLine *line, |
713 | struct configFileInfo *cfi); |
714 | static size_t getRootSpecifier(const char *str); |
715 | static void requote(struct singleLine *line, struct configFileInfo *cfi); |
716 | static void insertElement(struct singleLine *line, |
717 | const char *item, int insertHere, |
718 | struct configFileInfo *cfi); |
719 | static void removeElement(struct singleLine *line, int removeHere); |
720 | static struct keywordTypes *getKeywordByType(enum lineType_e type, |
721 | struct configFileInfo *cfi); |
722 | static enum lineType_e getTypeByKeyword(char *keyword, |
723 | struct configFileInfo *cfi); |
724 | static struct singleLine *getLineByType(enum lineType_e type, |
725 | struct singleLine *line); |
726 | static int checkForExtLinux(struct grubConfig *config); |
727 | struct singleLine *addLineTmpl(struct singleEntry *entry, |
728 | struct singleLine *tmplLine, |
729 | struct singleLine *prevLine, |
730 | const char *val, struct configFileInfo *cfi); |
731 | struct singleLine *addLine(struct singleEntry *entry, |
732 | struct configFileInfo *cfi, |
733 | enum lineType_e type, char *defaultIndent, |
734 | const char *val); |
735 | |
736 | static char *sdupprintf(const char *format, ...) |
737 | #ifdef __GNUC__ |
738 | __attribute__ ((format(printf, 1, 2))); |
739 | #else |
740 | ; |
741 | #endif |
742 | |
743 | static char *sdupprintf(const char *format, ...) |
744 | { |
745 | char *buf = NULL; |
746 | char c; |
747 | va_list args; |
748 | size_t size = 0; |
749 | va_start(args, format); |
750 | |
751 | /* XXX requires C99 vsnprintf behavior */ |
752 | size = vsnprintf(&c, 1, format, args) + 1; |
753 | if (size == -1) { |
754 | printf("ERROR: vsnprintf behavior is not C99\n"); |
755 | abort(); |
756 | } |
757 | |
758 | va_end(args); |
759 | va_start(args, format); |
760 | |
761 | buf = malloc(size); |
762 | if (buf == NULL) |
763 | return NULL; |
764 | vsnprintf(buf, size, format, args); |
765 | va_end(args); |
766 | |
767 | return buf; |
768 | } |
769 | |
770 | static inline int |
771 | kwcmp(struct keywordTypes *kw, const char * label, int case_insensitive) |
772 | { |
773 | int kwl = strlen(kw->key); |
774 | int ll = strlen(label); |
775 | int rc; |
776 | int (*snc)(const char *s1, const char *s2, size_t n) = |
777 | case_insensitive ? strncasecmp : strncmp; |
778 | int (*sc)(const char *s1, const char *s2) = |
779 | case_insensitive ? strcasecmp : strcmp; |
780 | |
781 | rc = snc(kw->key, label, kwl); |
782 | if (rc) |
783 | return rc; |
784 | |
785 | for (int i = kwl; i < ll; i++) { |
786 | if (isspace(label[i])) |
787 | return 0; |
788 | if (kw->separatorChar && label[i] == kw->separatorChar) |
789 | return 0; |
790 | else if (kw->nextChar && label[i] == kw->nextChar) |
791 | return 0; |
792 | return sc(kw->key+kwl, label+kwl); |
793 | } |
794 | return 0; |
795 | } |
796 | |
797 | static enum lineType_e preferredLineType(enum lineType_e type, |
798 | struct configFileInfo *cfi) |
799 | { |
800 | if (isEfi && cfi == &grub2ConfigType) { |
801 | switch (type) { |
802 | case LT_KERNEL: |
803 | return isEfiOnly ? LT_KERNEL : LT_KERNEL_EFI; |
804 | case LT_INITRD: |
805 | return isEfiOnly ? LT_INITRD : LT_INITRD_EFI; |
806 | default: |
807 | return type; |
808 | } |
809 | #if defined(__i386__) || defined(__x86_64__) |
810 | } else if (cfi == &grub2ConfigType) { |
811 | switch (type) { |
812 | case LT_KERNEL: |
813 | return LT_KERNEL_16; |
814 | case LT_INITRD: |
815 | return LT_INITRD_16; |
816 | default: |
817 | return type; |
818 | } |
819 | #endif |
820 | } |
821 | return type; |
822 | } |
823 | |
824 | static struct keywordTypes *getKeywordByType(enum lineType_e type, |
825 | struct configFileInfo *cfi) |
826 | { |
827 | for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) { |
828 | if (kw->type == type) |
829 | return kw; |
830 | } |
831 | return NULL; |
832 | } |
833 | |
834 | static char *getKeyByType(enum lineType_e type, struct configFileInfo *cfi) |
835 | { |
836 | struct keywordTypes *kt = getKeywordByType(type, cfi); |
837 | if (kt) |
838 | return kt->key; |
839 | return "unknown"; |
840 | } |
841 | |
842 | static char *getpathbyspec(char *device) |
843 | { |
844 | if (!blkid) |
845 | blkid_get_cache(&blkid, NULL); |
846 | |
847 | return blkid_get_devname(blkid, device, NULL); |
848 | } |
849 | |
850 | static char *getuuidbydev(char *device) |
851 | { |
852 | if (!blkid) |
853 | blkid_get_cache(&blkid, NULL); |
854 | |
855 | return blkid_get_tag_value(blkid, "UUID", device); |
856 | } |
857 | |
858 | static enum lineType_e getTypeByKeyword(char *keyword, |
859 | struct configFileInfo *cfi) |
860 | { |
861 | for (struct keywordTypes * kw = cfi->keywords; kw->key; kw++) { |
862 | if (!kwcmp(kw, keyword, cfi->caseInsensitive)) |
863 | return kw->type; |
864 | } |
865 | return LT_UNKNOWN; |
866 | } |
867 | |
868 | static struct singleLine *getLineByType(enum lineType_e type, |
869 | struct singleLine *line) |
870 | { |
871 | dbgPrintf("getLineByType(%d): ", type); |
872 | for (; line; line = line->next) { |
873 | dbgPrintf("%d:%s ", line->type, |
874 | line->numElements ? line->elements[0]. |
875 | item : "(empty)"); |
876 | if (line->type & type) |
877 | break; |
878 | } |
879 | dbgPrintf(line ? "\n" : " (failed)\n"); |
880 | return line; |
881 | } |
882 | |
883 | static int isBracketedTitle(struct singleLine *line) |
884 | { |
885 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
886 | int len = strlen(line->elements[0].item); |
887 | if (*(line->elements[0].item + len - 1) == ']') { |
888 | /* FIXME: this is a hack... */ |
889 | if (strcmp(line->elements[0].item, "[defaultboot]")) { |
890 | return 1; |
891 | } |
892 | } |
893 | } |
894 | return 0; |
895 | } |
896 | |
897 | static int isEntryStart(struct singleLine *line, struct configFileInfo *cfi) |
898 | { |
899 | return line->type == cfi->entryStart || line->type == LT_OTHER || |
900 | (cfi->titleBracketed && isBracketedTitle(line)); |
901 | } |
902 | |
903 | /* extract the title from within brackets (for zipl) */ |
904 | static char *extractTitle(struct grubConfig *cfg, struct singleLine *line) |
905 | { |
906 | /* bracketed title... let's extract it */ |
907 | char *title = NULL; |
908 | if (line->type == LT_TITLE) { |
909 | char *tmp = line->elements[cfg->cfi->titlePosition].item; |
910 | if (cfg->cfi->titleBracketed) { |
911 | tmp++; |
912 | title = strdup(tmp); |
913 | *(title + strlen(title) - 1) = '\0'; |
914 | } else { |
915 | title = strdup(tmp); |
916 | } |
917 | } else if (line->type == LT_MENUENTRY) |
918 | title = strdup(line->elements[1].item); |
919 | else |
920 | return NULL; |
921 | return title; |
922 | } |
923 | |
924 | static int readFile(int fd, char **bufPtr) |
925 | { |
926 | int alloced = 0, size = 0, i = 0; |
927 | char *buf = NULL; |
928 | |
929 | do { |
930 | size += i; |
931 | if ((size + 1024) > alloced) { |
932 | alloced += 4096; |
933 | buf = realloc(buf, alloced + 1); |
934 | } |
935 | } while ((i = read(fd, buf + size, 1024)) > 0); |
936 | |
937 | if (i < 0) { |
938 | fprintf(stderr, _("error reading input: %s\n"), |
939 | strerror(errno)); |
940 | free(buf); |
941 | return 1; |
942 | } |
943 | |
944 | buf = realloc(buf, size + 2); |
945 | if (size == 0) |
946 | buf[size++] = '\n'; |
947 | else if (buf[size - 1] != '\n') |
948 | buf[size++] = '\n'; |
949 | buf[size] = '\0'; |
950 | |
951 | *bufPtr = buf; |
952 | |
953 | return 0; |
954 | } |
955 | |
956 | static void lineInit(struct singleLine *line) |
957 | { |
958 | line->type = LT_UNIDENTIFIED; |
959 | line->indent = NULL; |
960 | line->elements = NULL; |
961 | line->numElements = 0; |
962 | line->next = NULL; |
963 | } |
964 | |
965 | struct singleLine *lineDup(struct singleLine *line) |
966 | { |
967 | struct singleLine *newLine = malloc(sizeof(*newLine)); |
968 | |
969 | newLine->indent = strdup(line->indent); |
970 | newLine->next = NULL; |
971 | newLine->type = line->type; |
972 | newLine->numElements = line->numElements; |
973 | newLine->elements = malloc(sizeof(*newLine->elements) * |
974 | newLine->numElements); |
975 | |
976 | for (int i = 0; i < newLine->numElements; i++) { |
977 | newLine->elements[i].indent = strdup(line->elements[i].indent); |
978 | newLine->elements[i].item = strdup(line->elements[i].item); |
979 | } |
980 | |
981 | return newLine; |
982 | } |
983 | |
984 | static void lineFree(struct singleLine *line) |
985 | { |
986 | if (line->indent) |
987 | free(line->indent); |
988 | |
989 | for (int i = 0; i < line->numElements; i++) { |
990 | free(line->elements[i].item); |
991 | free(line->elements[i].indent); |
992 | } |
993 | |
994 | if (line->elements) |
995 | free(line->elements); |
996 | lineInit(line); |
997 | } |
998 | |
999 | static int lineWrite(FILE * out, struct singleLine *line, |
1000 | struct configFileInfo *cfi) |
1001 | { |
1002 | if (fprintf(out, "%s", line->indent) == -1) |
1003 | return -1; |
1004 | |
1005 | for (int i = 0; i < line->numElements; i++) { |
1006 | /* Need to handle this, because we strip the quotes from |
1007 | * menuentry when read it. */ |
1008 | if (line->type == LT_MENUENTRY && i == 1) { |
1009 | if (!isquote(*line->elements[i].item)) { |
1010 | int substring = 0; |
1011 | /* If the line contains nested quotes, we did |
1012 | * not strip the "interna" quotes and we must |
1013 | * use the right quotes again when writing |
1014 | * the updated file. */ |
1015 | for (int j = i; j < line->numElements; j++) { |
1016 | if (strchr(line->elements[i].item, '\'') |
1017 | != NULL) { |
1018 | substring = 1; |
1019 | fprintf(out, "\"%s\"", |
1020 | line->elements[i].item); |
1021 | break; |
1022 | } |
1023 | } |
1024 | if (!substring) |
1025 | fprintf(out, "\'%s\'", |
1026 | line->elements[i].item); |
1027 | } else { |
1028 | fprintf(out, "%s", line->elements[i].item); |
1029 | } |
1030 | fprintf(out, "%s", line->elements[i].indent); |
1031 | |
1032 | continue; |
1033 | } |
1034 | |
1035 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) |
1036 | if (fputc('"', out) == EOF) |
1037 | return -1; |
1038 | |
1039 | if (fprintf(out, "%s", line->elements[i].item) == -1) |
1040 | return -1; |
1041 | if (i < line->numElements - 1 || line->type == LT_SET_VARIABLE) |
1042 | if (fprintf(out, "%s", line->elements[i].indent) == -1) |
1043 | return -1; |
1044 | } |
1045 | |
1046 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) |
1047 | if (fputc('"', out) == EOF) |
1048 | return -1; |
1049 | |
1050 | if (fprintf(out, "\n") == -1) |
1051 | return -1; |
1052 | |
1053 | return 0; |
1054 | } |
1055 | |
1056 | /* we've guaranteed that the buffer ends w/ \n\0 */ |
1057 | static int getNextLine(char **bufPtr, struct singleLine *line, |
1058 | struct configFileInfo *cfi) |
1059 | { |
1060 | char *end; |
1061 | char *start = *bufPtr; |
1062 | char *chptr; |
1063 | int elementsAlloced = 0; |
1064 | struct lineElement *element; |
1065 | int first = 1; |
1066 | |
1067 | lineFree(line); |
1068 | |
1069 | end = strchr(start, '\n'); |
1070 | *end = '\0'; |
1071 | *bufPtr = end + 1; |
1072 | |
1073 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; |
1074 | |
1075 | line->indent = strndup(start, chptr - start); |
1076 | start = chptr; |
1077 | |
1078 | while (start < end) { |
1079 | /* we know !isspace(*start) */ |
1080 | |
1081 | if (elementsAlloced == line->numElements) { |
1082 | elementsAlloced += 5; |
1083 | line->elements = realloc(line->elements, |
1084 | sizeof(*line->elements) * |
1085 | elementsAlloced); |
1086 | } |
1087 | |
1088 | element = line->elements + line->numElements; |
1089 | |
1090 | chptr = start; |
1091 | while (*chptr && !isspace(*chptr)) { |
1092 | if (first && *chptr == '=') |
1093 | break; |
1094 | chptr++; |
1095 | } |
1096 | if (line->type == LT_UNIDENTIFIED) |
1097 | line->type = getTypeByKeyword(start, cfi); |
1098 | element->item = strndup(start, chptr - start); |
1099 | start = chptr; |
1100 | |
1101 | /* lilo actually accepts the pathological case of |
1102 | * append = " foo " */ |
1103 | if (*start == '=') |
1104 | chptr = start + 1; |
1105 | else |
1106 | chptr = start; |
1107 | |
1108 | do { |
1109 | for (; *chptr && isspace(*chptr); chptr++) ; |
1110 | if (*chptr == '=') |
1111 | chptr = chptr + 1; |
1112 | } while (isspace(*chptr)); |
1113 | |
1114 | element->indent = strndup(start, chptr - start); |
1115 | start = chptr; |
1116 | |
1117 | line->numElements++; |
1118 | first = 0; |
1119 | } |
1120 | |
1121 | if (!line->numElements) |
1122 | line->type = LT_WHITESPACE; |
1123 | else { |
1124 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
1125 | if (line->type == LT_UNKNOWN) { |
1126 | /* zipl does [title] instead of something reasonable |
1127 | * like all the other boot loaders. kind of ugly */ |
1128 | if (cfi->titleBracketed && isBracketedTitle(line)) { |
1129 | line->type = LT_TITLE; |
1130 | } |
1131 | |
1132 | /* this is awkward, but we need to be able to handle |
1133 | * keywords that begin with a # (specifically for |
1134 | * #boot in grub.conf), but still make comments lines |
1135 | * with no elements (everything stored in the indent |
1136 | */ |
1137 | if (*line->elements[0].item == '#') { |
1138 | char *fullLine; |
1139 | int len; |
1140 | |
1141 | len = strlen(line->indent); |
1142 | for (int i = 0; i < line->numElements; i++) |
1143 | len += strlen(line->elements[i].item) + |
1144 | strlen(line->elements[i].indent); |
1145 | |
1146 | fullLine = malloc(len + 1); |
1147 | strcpy(fullLine, line->indent); |
1148 | free(line->indent); |
1149 | line->indent = fullLine; |
1150 | |
1151 | for (int i = 0; i < line->numElements; i++) { |
1152 | strcat(fullLine, |
1153 | line->elements[i].item); |
1154 | strcat(fullLine, |
1155 | line->elements[i].indent); |
1156 | free(line->elements[i].item); |
1157 | free(line->elements[i].indent); |
1158 | } |
1159 | |
1160 | line->type = LT_WHITESPACE; |
1161 | line->numElements = 0; |
1162 | } |
1163 | } else if (line->type == LT_INITRD) { |
1164 | struct keywordTypes *kw; |
1165 | |
1166 | kw = getKeywordByType(line->type, cfi); |
1167 | |
1168 | /* space isn't the only separator, we need to split |
1169 | * elements up more |
1170 | */ |
1171 | if (!isspace(kw->separatorChar)) { |
1172 | char indent[2] = ""; |
1173 | indent[0] = kw->separatorChar; |
1174 | for (int i = 1; i < line->numElements; i++) { |
1175 | char *p; |
1176 | int numNewElements; |
1177 | |
1178 | numNewElements = 0; |
1179 | p = line->elements[i].item; |
1180 | while (*p != '\0') { |
1181 | if (*p == kw->separatorChar) |
1182 | numNewElements++; |
1183 | p++; |
1184 | } |
1185 | if (line->numElements + |
1186 | numNewElements >= elementsAlloced) { |
1187 | elementsAlloced += |
1188 | numNewElements + 5; |
1189 | line->elements = |
1190 | realloc(line->elements, |
1191 | sizeof(*line-> |
1192 | elements) * |
1193 | elementsAlloced); |
1194 | } |
1195 | |
1196 | for (int j = line->numElements; j > i; |
1197 | j--) { |
1198 | line->elements[j + |
1199 | numNewElements] = |
1200 | line->elements[j]; |
1201 | } |
1202 | line->numElements += numNewElements; |
1203 | |
1204 | p = line->elements[i].item; |
1205 | while (*p != '\0') { |
1206 | |
1207 | while (*p != kw->separatorChar |
1208 | && *p != '\0') |
1209 | p++; |
1210 | if (*p == '\0') { |
1211 | break; |
1212 | } |
1213 | |
1214 | line->elements[i + 1].indent = |
1215 | line->elements[i].indent; |
1216 | line->elements[i].indent = |
1217 | strdup(indent); |
1218 | *p++ = '\0'; |
1219 | i++; |
1220 | line->elements[i].item = |
1221 | strdup(p); |
1222 | } |
1223 | } |
1224 | } |
1225 | } else if (line->type == LT_SET_VARIABLE) { |
1226 | /* and if it's a "set blah=" we need to split it |
1227 | * yet a third way to avoid rhbz# XXX FIXME :/ |
1228 | */ |
1229 | char *eq; |
1230 | int l; |
1231 | int numElements = line->numElements; |
1232 | struct lineElement *newElements; |
1233 | eq = strchr(line->elements[1].item, '='); |
1234 | if (!eq) |
1235 | return 0; |
1236 | l = eq - line->elements[1].item; |
1237 | if (eq[1] != 0) |
1238 | numElements++; |
1239 | newElements = calloc(numElements,sizeof (*newElements)); |
1240 | memcpy(&newElements[0], &line->elements[0], |
1241 | sizeof (newElements[0])); |
1242 | newElements[1].item = |
1243 | strndup(line->elements[1].item, l); |
1244 | newElements[1].indent = "="; |
1245 | *(eq++) = '\0'; |
1246 | newElements[2].item = strdup(eq); |
1247 | free(line->elements[1].item); |
1248 | if (line->elements[1].indent) |
1249 | newElements[2].indent = line->elements[1].indent; |
1250 | for (int i = 2; i < line->numElements; i++) { |
1251 | newElements[i+1].item = line->elements[i].item; |
1252 | newElements[i+1].indent = |
1253 | line->elements[i].indent; |
1254 | } |
1255 | free(line->elements); |
1256 | line->elements = newElements; |
1257 | line->numElements = numElements; |
1258 | } |
1259 | } |
1260 | |
1261 | return 0; |
1262 | } |
1263 | |
1264 | static int isnumber(const char *s) |
1265 | { |
1266 | int i; |
1267 | for (i = 0; s[i] != '\0'; i++) |
1268 | if (s[i] < '0' || s[i] > '9') |
1269 | return 0; |
1270 | return i; |
1271 | } |
1272 | |
1273 | static struct grubConfig *readConfig(const char *inName, |
1274 | struct configFileInfo *cfi) |
1275 | { |
1276 | int in; |
1277 | char *incoming = NULL, *head; |
1278 | int rc; |
1279 | int sawEntry = 0; |
1280 | int movedLine = 0; |
1281 | struct grubConfig *cfg; |
1282 | struct singleLine *last = NULL, *line, *defaultLine = NULL; |
1283 | char *end; |
1284 | struct singleEntry *entry = NULL; |
1285 | int len; |
1286 | char *buf; |
1287 | |
1288 | if (inName == NULL) { |
1289 | printf("Could not find bootloader configuration\n"); |
1290 | exit(1); |
1291 | } else if (!strcmp(inName, "-")) { |
1292 | in = 0; |
1293 | } else { |
1294 | if ((in = open(inName, O_RDONLY)) < 0) { |
1295 | fprintf(stderr, _("error opening %s for read: %s\n"), |
1296 | inName, strerror(errno)); |
1297 | return NULL; |
1298 | } |
1299 | } |
1300 | |
1301 | rc = readFile(in, &incoming); |
1302 | close(in); |
1303 | if (rc) |
1304 | return NULL; |
1305 | |
1306 | head = incoming; |
1307 | cfg = malloc(sizeof(*cfg)); |
1308 | cfg->primaryIndent = strdup(""); |
1309 | cfg->secondaryIndent = strdup("\t"); |
1310 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; |
1311 | cfg->cfi = cfi; |
1312 | cfg->theLines = NULL; |
1313 | cfg->entries = NULL; |
1314 | cfg->fallbackImage = 0; |
1315 | cfg->isModified = 0; |
1316 | |
1317 | /* copy everything we have */ |
1318 | while (*head) { |
1319 | line = malloc(sizeof(*line)); |
1320 | lineInit(line); |
1321 | |
1322 | if (getNextLine(&head, line, cfi)) { |
1323 | free(line); |
1324 | /* XXX memory leak of everything in cfg */ |
1325 | return NULL; |
1326 | } |
1327 | |
1328 | if (!sawEntry && line->numElements) { |
1329 | free(cfg->primaryIndent); |
1330 | cfg->primaryIndent = strdup(line->indent); |
1331 | } else if (line->numElements) { |
1332 | free(cfg->secondaryIndent); |
1333 | cfg->secondaryIndent = strdup(line->indent); |
1334 | } |
1335 | |
1336 | if (isEntryStart(line, cfi) || (cfg->entries && !sawEntry)) { |
1337 | sawEntry = 1; |
1338 | if (!entry) { |
1339 | cfg->entries = malloc(sizeof(*entry)); |
1340 | entry = cfg->entries; |
1341 | } else { |
1342 | entry->next = malloc(sizeof(*entry)); |
1343 | entry = entry->next; |
1344 | } |
1345 | |
1346 | entry->skip = 0; |
1347 | entry->multiboot = 0; |
1348 | entry->lines = NULL; |
1349 | entry->next = NULL; |
1350 | } |
1351 | |
1352 | if (line->type == LT_SET_VARIABLE) { |
1353 | dbgPrintf("found 'set' command (%d elements): ", |
1354 | line->numElements); |
1355 | dbgPrintf("%s", line->indent); |
1356 | for (int i = 0; i < line->numElements; i++) |
1357 | dbgPrintf("\"%s\"%s", line->elements[i].item, |
1358 | line->elements[i].indent); |
1359 | dbgPrintf("\n"); |
1360 | struct keywordTypes *kwType = |
1361 | getKeywordByType(LT_DEFAULT, cfi); |
1362 | if (kwType && line->numElements == 3 |
1363 | && !strcmp(line->elements[1].item, kwType->key) |
1364 | && !is_special_grub2_variable( |
1365 | line->elements[2].item)) { |
1366 | dbgPrintf("Line sets default config\n"); |
1367 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1368 | defaultLine = line; |
1369 | } |
1370 | } else if (iskernel(line->type)) { |
1371 | /* if by some freak chance this is multiboot and the |
1372 | * "module" lines came earlier in the template, make |
1373 | * sure to use LT_HYPER instead of LT_KERNEL now |
1374 | */ |
1375 | if (entry && entry->multiboot) |
1376 | line->type = LT_HYPER; |
1377 | |
1378 | } else if (line->type == LT_MBMODULE) { |
1379 | /* go back and fix the LT_KERNEL line to indicate |
1380 | * LT_HYPER instead, now that we know this is a |
1381 | * multiboot entry. This only applies to grub, but |
1382 | * that's the only place we should find LT_MBMODULE |
1383 | * lines anyway. |
1384 | */ |
1385 | for (struct singleLine * l = entry->lines; l; |
1386 | l = l->next) { |
1387 | if (l->type == LT_HYPER) |
1388 | break; |
1389 | else if (iskernel(l->type)) { |
1390 | l->type = LT_HYPER; |
1391 | break; |
1392 | } |
1393 | } |
1394 | entry->multiboot = 1; |
1395 | |
1396 | } else if (line->type == LT_HYPER) { |
1397 | entry->multiboot = 1; |
1398 | |
1399 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
1400 | cfg->fallbackImage = |
1401 | strtol(line->elements[1].item, &end, 10); |
1402 | if (*end) |
1403 | cfg->fallbackImage = -1; |
1404 | |
1405 | } else if ((line->type == LT_DEFAULT && cfi->defaultIsUnquoted) |
1406 | || (line->type == LT_TITLE |
1407 | && line->numElements > 1)) { |
1408 | /* make the title/default a single argument (undoing |
1409 | * our parsing) */ |
1410 | len = 0; |
1411 | for (int i = 1; i < line->numElements; i++) { |
1412 | len += strlen(line->elements[i].item); |
1413 | len += strlen(line->elements[i].indent); |
1414 | } |
1415 | buf = malloc(len + 1); |
1416 | *buf = '\0'; |
1417 | |
1418 | for (int i = 1; i < line->numElements; i++) { |
1419 | strcat(buf, line->elements[i].item); |
1420 | free(line->elements[i].item); |
1421 | |
1422 | if ((i + 1) != line->numElements) { |
1423 | strcat(buf, line->elements[i].indent); |
1424 | free(line->elements[i].indent); |
1425 | } |
1426 | } |
1427 | |
1428 | line->elements[1].indent = |
1429 | line->elements[line->numElements - 1].indent; |
1430 | line->elements[1].item = buf; |
1431 | line->numElements = 2; |
1432 | } else if (line->type == LT_MENUENTRY && line->numElements > 3) { |
1433 | /* let --remove-kernel="TITLE=what" work */ |
1434 | len = 0; |
1435 | char *extras; |
1436 | char *title; |
1437 | /* initially unseen value */ |
1438 | char quote_char = '\0'; |
1439 | |
1440 | for (int i = 1; i < line->numElements; i++) { |
1441 | len += strlen(line->elements[i].item); |
1442 | len += strlen(line->elements[i].indent); |
1443 | } |
1444 | buf = malloc(len + 1); |
1445 | *buf = '\0'; |
1446 | |
1447 | /* allocate mem for extra flags. */ |
1448 | extras = malloc(len + 1); |
1449 | *extras = '\0'; |
1450 | |
1451 | int buf_len = 0; |
1452 | /* get title. */ |
1453 | for (int i = 0; i < line->numElements; i++) { |
1454 | if (!strcmp |
1455 | (line->elements[i].item, "menuentry")) |
1456 | continue; |
1457 | if (isquote(*line->elements[i].item) |
1458 | && quote_char == '\0') { |
1459 | /* ensure we properly pair off quotes */ |
1460 | quote_char = *line->elements[i].item; |
1461 | title = line->elements[i].item + 1; |
1462 | } else { |
1463 | title = line->elements[i].item; |
1464 | } |
1465 | |
1466 | len = strlen(title); |
1467 | if (title[len - 1] == quote_char) { |
1468 | memcpy(buf + buf_len, title, len - 1); |
1469 | buf_len += (len - 1); |
1470 | break; |
1471 | } else { |
1472 | memcpy(buf + buf_len, title, len); |
1473 | buf_len += len; |
1474 | len = strlen(line->elements[i].indent); |
1475 | memcpy(buf + buf_len, line->elements[i].indent, len); |
1476 | buf_len += len; |
1477 | } |
1478 | } |
1479 | buf[buf_len] = '\0'; |
1480 | |
1481 | /* get extras */ |
1482 | int count = 0; |
1483 | quote_char = '\0'; |
1484 | for (int i = 0; i < line->numElements; i++) { |
1485 | if (count >= 2) { |
1486 | strcat(extras, line->elements[i].item); |
1487 | strcat(extras, |
1488 | line->elements[i].indent); |
1489 | } |
1490 | |
1491 | if (!strcmp |
1492 | (line->elements[i].item, "menuentry")) |
1493 | continue; |
1494 | |
1495 | /* count ' or ", there should be two in menuentry line. */ |
1496 | if (isquote(*line->elements[i].item) |
1497 | && quote_char == '\0') { |
1498 | /* ensure we properly pair off quotes */ |
1499 | quote_char = *line->elements[i].item; |
1500 | count++; |
1501 | } |
1502 | |
1503 | len = strlen(line->elements[i].item); |
1504 | |
1505 | if (line->elements[i].item[len - 1] == |
1506 | quote_char) |
1507 | count++; |
1508 | |
1509 | /* ok, we get the final ' or ", others are extras. */ |
1510 | } |
1511 | line->elements[1].indent = |
1512 | line->elements[line->numElements - 2].indent; |
1513 | line->elements[1].item = buf; |
1514 | line->elements[2].indent = |
1515 | line->elements[line->numElements - 2].indent; |
1516 | line->elements[2].item = extras; |
1517 | line->numElements = 3; |
1518 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
1519 | /* Strip off any " which may be present; they'll be |
1520 | * put back on write. This is one of the few (the |
1521 | * only?) places that grubby canonicalizes the output |
1522 | */ |
1523 | if (line->numElements >= 2) { |
1524 | int last, len; |
1525 | |
1526 | if (isquote(*line->elements[1].item)) |
1527 | memmove(line->elements[1].item, |
1528 | line->elements[1].item + 1, |
1529 | strlen(line->elements[1].item + |
1530 | 1) + 1); |
1531 | |
1532 | last = line->numElements - 1; |
1533 | len = strlen(line->elements[last].item) - 1; |
1534 | if (isquote(line->elements[last].item[len])) |
1535 | line->elements[last].item[len] = '\0'; |
1536 | } |
1537 | } |
1538 | |
1539 | if (line->type == LT_DEFAULT && line->numElements == 2) { |
1540 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; |
1541 | defaultLine = line; |
1542 | } |
1543 | |
1544 | /* If we find a generic config option which should live at the |
1545 | top of the file, move it there. Old versions of grubby were |
1546 | probably responsible for putting new images in the wrong |
1547 | place in front of it anyway. */ |
1548 | if (sawEntry && line->type == LT_GENERIC) { |
1549 | struct singleLine **l = &cfg->theLines; |
1550 | struct singleLine **last_nonws = &cfg->theLines; |
1551 | while (*l) { |
1552 | if ((*l)->type != LT_WHITESPACE) |
1553 | last_nonws = &((*l)->next); |
1554 | l = &((*l)->next); |
1555 | } |
1556 | line->next = *last_nonws; |
1557 | *last_nonws = line; |
1558 | movedLine = 1; |
1559 | continue; /* without setting 'last' */ |
1560 | } |
1561 | |
1562 | /* If a second line of whitespace happens after a generic |
1563 | * option which was moved, drop it. */ |
1564 | if (movedLine && line->type == LT_WHITESPACE |
1565 | && last->type == LT_WHITESPACE) { |
1566 | lineFree(line); |
1567 | free(line); |
1568 | movedLine = 0; |
1569 | continue; |
1570 | } |
1571 | movedLine = 0; |
1572 | |
1573 | if (sawEntry) { |
1574 | if (!entry->lines) |
1575 | entry->lines = line; |
1576 | else |
1577 | last->next = line; |
1578 | dbgPrintf("readConfig added %s to %p\n", |
1579 | getKeyByType(line->type, cfi), entry); |
1580 | |
1581 | /* we could have seen this outside of an entry... if |
1582 | * so, we ignore it like any other line we don't grok |
1583 | */ |
1584 | if (line->type == LT_ENTRY_END && sawEntry) |
1585 | sawEntry = 0; |
1586 | } else { |
1587 | if (!cfg->theLines) |
1588 | cfg->theLines = line; |
1589 | else |
1590 | last->next = line; |
1591 | dbgPrintf("readConfig added %s to cfg\n", |
1592 | getKeyByType(line->type, cfi)); |
1593 | } |
1594 | |
1595 | last = line; |
1596 | } |
1597 | |
1598 | free(incoming); |
1599 | |
1600 | dbgPrintf("defaultLine is %s\n", defaultLine ? "set" : "unset"); |
1601 | if (defaultLine) { |
1602 | if (defaultLine->numElements > 2 && |
1603 | cfi->defaultSupportSaved && |
1604 | !strncmp(defaultLine->elements[2].item, |
1605 | "\"${saved_entry}\"", 16)) { |
1606 | cfg->cfi->defaultIsSaved = 1; |
1607 | cfg->defaultImage = DEFAULT_SAVED_GRUB2; |
1608 | if (cfg->cfi->getEnv) { |
1609 | char *defTitle = |
1610 | cfi->getEnv(cfg->cfi, "saved_entry"); |
1611 | if (defTitle) { |
1612 | int index = 0; |
1613 | if (isnumber(defTitle)) { |
1614 | index = atoi(defTitle); |
1615 | entry = |
1616 | findEntryByIndex(cfg, |
1617 | index); |
1618 | } else { |
1619 | entry = |
1620 | findEntryByTitle(cfg, |
1621 | defTitle, |
1622 | &index); |
1623 | } |
1624 | if (entry) |
1625 | cfg->defaultImage = index; |
1626 | } |
1627 | } |
1628 | } else if (cfi->defaultIsVariable) { |
1629 | if (defaultLine->numElements == 2) { |
1630 | char *value = defaultLine->elements[1].item + 8; |
1631 | while (*value && (*value == '"' || |
1632 | *value == '\'' || |
1633 | *value == ' ' || |
1634 | *value == '\t')) |
1635 | value++; |
1636 | cfg->defaultImage = strtol(value, &end, 10); |
1637 | while (*end && (*end == '"' || *end == '\'' || |
1638 | *end == ' ' || *end == '\t')) |
1639 | end++; |
1640 | if (*end) |
1641 | cfg->defaultImage = NO_DEFAULT_ENTRY; |
1642 | } else if (defaultLine->numElements == 3) { |
1643 | char *value = defaultLine->elements[2].item; |
1644 | while (*value && (*value == '"' || |
1645 | *value == '\'' || |
1646 | *value == ' ' || |
1647 | *value == '\t')) |
1648 | value++; |
1649 | cfg->defaultImage = strtol(value, &end, 10); |
1650 | while (*end && (*end == '"' || *end == '\'' || |
1651 | *end == ' ' || *end == '\t')) |
1652 | end++; |
1653 | if (*end) |
1654 | cfg->defaultImage = NO_DEFAULT_ENTRY; |
1655 | } |
1656 | } else if (cfi->defaultSupportSaved && |
1657 | !strncmp(defaultLine->elements[1].item, "saved", |
1658 | 5)) { |
1659 | cfg->defaultImage = DEFAULT_SAVED; |
1660 | } else if (cfi->defaultIsIndex) { |
1661 | cfg->defaultImage = |
1662 | strtol(defaultLine->elements[1].item, &end, 10); |
1663 | if (*end) |
1664 | cfg->defaultImage = NO_DEFAULT_ENTRY; |
1665 | } else if (defaultLine->numElements >= 2) { |
1666 | int i = 0; |
1667 | while ((entry = findEntryByIndex(cfg, i))) { |
1668 | for (line = entry->lines; line; |
1669 | line = line->next) |
1670 | if (line->type == LT_TITLE) |
1671 | break; |
1672 | |
1673 | if (!cfi->titleBracketed) { |
1674 | if (line && (line->numElements >= 2) && |
1675 | !strcmp(defaultLine->elements[1]. |
1676 | item, |
1677 | line->elements[1].item)) |
1678 | break; |
1679 | } else if (line) { |
1680 | if (!strcmp |
1681 | (defaultLine->elements[1].item, |
1682 | extractTitle(cfg, line))) |
1683 | break; |
1684 | } |
1685 | i++; |
1686 | entry = NULL; |
1687 | } |
1688 | |
1689 | if (entry) { |
1690 | cfg->defaultImage = i; |
1691 | } else { |
1692 | cfg->defaultImage = NO_DEFAULT_ENTRY; |
1693 | } |
1694 | } |
1695 | } else if (cfg->cfi->defaultIsSaved && cfg->cfi->getEnv) { |
1696 | char *defTitle = cfi->getEnv(cfg->cfi, "saved_entry"); |
1697 | if (defTitle) { |
1698 | int index = 0; |
1699 | if (isnumber(defTitle)) { |
1700 | index = atoi(defTitle); |
1701 | entry = findEntryByIndex(cfg, index); |
1702 | } else { |
1703 | entry = findEntryByTitle(cfg, defTitle, &index); |
1704 | } |
1705 | if (entry) |
1706 | cfg->defaultImage = index; |
1707 | } |
1708 | } else { |
1709 | cfg->defaultImage = FIRST_ENTRY_INDEX; |
1710 | } |
1711 | |
1712 | return cfg; |
1713 | } |
1714 | |
1715 | static void writeDefault(FILE * out, char *indent, |
1716 | char *separator, struct grubConfig *cfg) |
1717 | { |
1718 | struct singleEntry *entry; |
1719 | struct singleLine *line; |
1720 | int i; |
1721 | |
1722 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) |
1723 | return; |
1724 | |
1725 | if (cfg->defaultImage == DEFAULT_SAVED) |
1726 | fprintf(out, "%sdefault%ssaved\n", indent, separator); |
1727 | else if (cfg->cfi->defaultIsSaved) { |
1728 | fprintf(out, "%sset default=\"${saved_entry}\"\n", indent); |
1729 | if (cfg->defaultImage >= FIRST_ENTRY_INDEX && cfg->cfi->setEnv) { |
1730 | char *title; |
1731 | int trueIndex, currentIndex; |
1732 | |
1733 | trueIndex = 0; |
1734 | currentIndex = 0; |
1735 | |
1736 | while ((entry = findEntryByIndex(cfg, currentIndex))) { |
1737 | if (!entry->skip) { |
1738 | if (trueIndex == cfg->defaultImage) { |
1739 | break; |
1740 | } |
1741 | trueIndex++; |
1742 | } |
1743 | currentIndex++; |
1744 | } |
1745 | line = getLineByType(LT_MENUENTRY, entry->lines); |
1746 | if (!line) |
1747 | line = getLineByType(LT_TITLE, entry->lines); |
1748 | if (line) { |
1749 | title = extractTitle(cfg, line); |
1750 | if (title) |
1751 | cfg->cfi->setEnv(cfg->cfi, |
1752 | "saved_entry", title); |
1753 | } |
1754 | } |
1755 | } else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) { |
1756 | if (cfg->cfi->defaultIsIndex) { |
1757 | if (cfg->cfi->defaultIsVariable) { |
1758 | fprintf(out, "%sset default=\"%d\"\n", indent, |
1759 | cfg->defaultImage); |
1760 | } else { |
1761 | fprintf(out, "%sdefault%s%d\n", indent, |
1762 | separator, cfg->defaultImage); |
1763 | } |
1764 | } else { |
1765 | int image = cfg->defaultImage; |
1766 | |
1767 | entry = cfg->entries; |
1768 | while (entry && entry->skip) |
1769 | entry = entry->next; |
1770 | |
1771 | i = 0; |
1772 | while (entry && i < image) { |
1773 | entry = entry->next; |
1774 | |
1775 | while (entry && entry->skip) |
1776 | entry = entry->next; |
1777 | i++; |
1778 | } |
1779 | |
1780 | if (!entry) |
1781 | return; |
1782 | |
1783 | line = getLineByType(LT_TITLE, entry->lines); |
1784 | |
1785 | if (line && line->numElements >= 2) |
1786 | fprintf(out, "%sdefault%s%s\n", indent, |
1787 | separator, line->elements[1].item); |
1788 | else if (line && (line->numElements == 1) |
1789 | && cfg->cfi->titleBracketed) { |
1790 | char *title = extractTitle(cfg, line); |
1791 | if (title) { |
1792 | fprintf(out, "%sdefault%s%s\n", indent, |
1793 | separator, title); |
1794 | free(title); |
1795 | } |
1796 | } |
1797 | } |
1798 | } |
1799 | } |
1800 | |
1801 | static int writeConfig(struct grubConfig *cfg, char *outName, |
1802 | const char *prefix) |
1803 | { |
1804 | FILE *out; |
1805 | struct singleLine *line; |
1806 | struct singleEntry *entry; |
1807 | char *tmpOutName; |
1808 | int needs = MAIN_DEFAULT; |
1809 | struct stat sb; |
1810 | int i; |
1811 | int rc = 0; |
1812 | |
1813 | if (!strcmp(outName, "-")) { |
1814 | out = stdout; |
1815 | tmpOutName = NULL; |
1816 | } else { |
1817 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { |
1818 | char *buf; |
1819 | int len = 256; |
1820 | int rc; |
1821 | |
1822 | /* most likely the symlink is relative, so change our |
1823 | directory to the dir of the symlink */ |
1824 | char *dir = strdupa(outName); |
1825 | rc = chdir(dirname(dir)); |
1826 | do { |
1827 | buf = alloca(len + 1); |
1828 | rc = readlink(basename(outName), buf, len); |
1829 | if (rc == len) |
1830 | len += 256; |
1831 | } while (rc == len); |
1832 | |
1833 | if (rc < 0) { |
1834 | fprintf(stderr, |
1835 | _ |
1836 | ("grubby: error readlink link %s: %s\n"), |
1837 | outName, strerror(errno)); |
1838 | return 1; |
1839 | } |
1840 | |
1841 | outName = buf; |
1842 | outName[rc] = '\0'; |
1843 | } |
1844 | |
1845 | tmpOutName = alloca(strlen(outName) + 2); |
1846 | sprintf(tmpOutName, "%s-", outName); |
1847 | out = fopen(tmpOutName, "w"); |
1848 | if (!out) { |
1849 | fprintf(stderr, _("grubby: error creating %s: %s\n"), |
1850 | tmpOutName, strerror(errno)); |
1851 | return 1; |
1852 | } |
1853 | |
1854 | if (!stat(outName, &sb)) { |
1855 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { |
1856 | fprintf(stderr, |
1857 | _ |
1858 | ("grubby: error setting perms on %s: %s\n"), |
1859 | tmpOutName, strerror(errno)); |
1860 | fclose(out); |
1861 | unlink(tmpOutName); |
1862 | return 1; |
1863 | } |
1864 | } |
1865 | } |
1866 | |
1867 | line = cfg->theLines; |
1868 | struct keywordTypes *defaultKw = getKeywordByType(LT_DEFAULT, cfg->cfi); |
1869 | while (line) { |
1870 | if (line->type == LT_SET_VARIABLE && defaultKw && |
1871 | line->numElements == 3 && |
1872 | !strcmp(line->elements[1].item, defaultKw->key) && |
1873 | !is_special_grub2_variable(line->elements[2].item)) { |
1874 | writeDefault(out, line->indent, |
1875 | line->elements[0].indent, cfg); |
1876 | needs &= ~MAIN_DEFAULT; |
1877 | } else if (line->type == LT_DEFAULT) { |
1878 | writeDefault(out, line->indent, |
1879 | line->elements[0].indent, cfg); |
1880 | needs &= ~MAIN_DEFAULT; |
1881 | } else if (line->type == LT_FALLBACK) { |
1882 | if (cfg->fallbackImage > -1) |
1883 | fprintf(out, "%s%s%s%d\n", line->indent, |
1884 | line->elements[0].item, |
1885 | line->elements[0].indent, |
1886 | cfg->fallbackImage); |
1887 | } else { |
1888 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1889 | fprintf(stderr, |
1890 | _("grubby: error writing %s: %s\n"), |
1891 | tmpOutName, strerror(errno)); |
1892 | fclose(out); |
1893 | unlink(tmpOutName); |
1894 | return 1; |
1895 | } |
1896 | } |
1897 | |
1898 | line = line->next; |
1899 | } |
1900 | |
1901 | if (needs & MAIN_DEFAULT) { |
1902 | writeDefault(out, cfg->primaryIndent, "=", cfg); |
1903 | needs &= ~MAIN_DEFAULT; |
1904 | } |
1905 | |
1906 | i = 0; |
1907 | while ((entry = findEntryByIndex(cfg, i++))) { |
1908 | if (entry->skip) |
1909 | continue; |
1910 | |
1911 | line = entry->lines; |
1912 | while (line) { |
1913 | if (lineWrite(out, line, cfg->cfi) == -1) { |
1914 | fprintf(stderr, |
1915 | _("grubby: error writing %s: %s\n"), |
1916 | tmpOutName, strerror(errno)); |
1917 | fclose(out); |
1918 | unlink(tmpOutName); |
1919 | return 1; |
1920 | } |
1921 | line = line->next; |
1922 | } |
1923 | } |
1924 | |
1925 | if (tmpOutName) { |
1926 | /* write userspace buffers */ |
1927 | if (fflush(out)) |
1928 | rc = 1; |
1929 | |
1930 | /* purge the write-back cache with fsync() */ |
1931 | if (fsync(fileno(out))) |
1932 | rc = 1; |
1933 | |
1934 | if (fclose(out)) |
1935 | rc = 1; |
1936 | |
1937 | if (rc == 0 && rename(tmpOutName, outName)) { |
1938 | unlink(tmpOutName); |
1939 | rc = 1; |
1940 | } |
1941 | |
1942 | /* fsync() the destination directory after rename */ |
1943 | if (rc == 0) { |
1944 | int dirfd; |
1945 | |
1946 | dirfd = open(dirname(strdupa(outName)), O_RDONLY); |
1947 | if (dirfd < 0) |
1948 | rc = 1; |
1949 | else if (fsync(dirfd)) |
1950 | rc = 1; |
1951 | |
1952 | if (dirfd >= 0) |
1953 | close(dirfd); |
1954 | } |
1955 | |
1956 | if (rc == 1) |
1957 | fprintf(stderr, |
1958 | _("grubby: error flushing data: %m\n")); |
1959 | } |
1960 | |
1961 | return rc; |
1962 | } |
1963 | |
1964 | static int numEntries(struct grubConfig *cfg) |
1965 | { |
1966 | int i = 0; |
1967 | struct singleEntry *entry; |
1968 | |
1969 | entry = cfg->entries; |
1970 | while (entry) { |
1971 | if (!entry->skip) |
1972 | i++; |
1973 | entry = entry->next; |
1974 | } |
1975 | return i; |
1976 | } |
1977 | |
1978 | static char *findDiskForRoot() |
1979 | { |
1980 | int fd; |
1981 | char buf[65536]; |
1982 | char *devname; |
1983 | char *chptr; |
1984 | int rc; |
1985 | |
1986 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { |
1987 | fprintf(stderr, "grubby: failed to open %s: %s\n", |
1988 | _PATH_MOUNTED, strerror(errno)); |
1989 | return NULL; |
1990 | } |
1991 | |
1992 | rc = read(fd, buf, sizeof(buf) - 1); |
1993 | if (rc <= 0) { |
1994 | fprintf(stderr, "grubby: failed to read %s: %s\n", |
1995 | _PATH_MOUNTED, strerror(errno)); |
1996 | close(fd); |
1997 | return NULL; |
1998 | } |
1999 | close(fd); |
2000 | buf[rc] = '\0'; |
2001 | chptr = buf; |
2002 | |
2003 | char *foundanswer = NULL; |
2004 | |
2005 | while (chptr && chptr != buf + rc) { |
2006 | devname = chptr; |
2007 | |
2008 | /* |
2009 | * The first column of a mtab entry is the device, but if the |
2010 | * entry is a special device it won't start with /, so move |
2011 | * on to the next line. |
2012 | */ |
2013 | if (*devname != '/') { |
2014 | chptr = strchr(chptr, '\n'); |
2015 | if (chptr) |
2016 | chptr++; |
2017 | continue; |
2018 | } |
2019 | |
2020 | /* Seek to the next space */ |
2021 | chptr = strchr(chptr, ' '); |
2022 | if (!chptr) { |
2023 | fprintf(stderr, "grubby: error parsing %s: %s\n", |
2024 | _PATH_MOUNTED, strerror(errno)); |
2025 | return NULL; |
2026 | } |
2027 | |
2028 | /* |
2029 | * The second column of a mtab entry is the mount point, we |
2030 | * are looking for '/' obviously. |
2031 | */ |
2032 | if (*(++chptr) == '/' && *(++chptr) == ' ') { |
2033 | /* remember the last / entry in mtab */ |
2034 | foundanswer = devname; |
2035 | } |
2036 | |
2037 | /* Next line */ |
2038 | chptr = strchr(chptr, '\n'); |
2039 | if (chptr) |
2040 | chptr++; |
2041 | } |
2042 | |
2043 | /* Return the last / entry found */ |
2044 | if (foundanswer) { |
2045 | chptr = strchr(foundanswer, ' '); |
2046 | *chptr = '\0'; |
2047 | return strdup(foundanswer); |
2048 | } |
2049 | |
2050 | return NULL; |
2051 | } |
2052 | |
2053 | void printEntry(struct singleEntry *entry, FILE * f) |
2054 | { |
2055 | int i; |
2056 | struct singleLine *line; |
2057 | |
2058 | for (line = entry->lines; line; line = line->next) { |
2059 | log_message(f, "DBG: %s", line->indent); |
2060 | for (i = 0; i < line->numElements; i++) { |
2061 | /* Need to handle this, because we strip the quotes from |
2062 | * menuentry when read it. */ |
2063 | if (line->type == LT_MENUENTRY && i == 1) { |
2064 | if (!isquote(*line->elements[i].item)) |
2065 | log_message(f, "\'%s\'", |
2066 | line->elements[i].item); |
2067 | else |
2068 | log_message(f, "%s", |
2069 | line->elements[i].item); |
2070 | log_message(f, "%s", line->elements[i].indent); |
2071 | |
2072 | continue; |
2073 | } |
2074 | |
2075 | log_message(f, "%s%s", |
2076 | line->elements[i].item, |
2077 | line->elements[i].indent); |
2078 | } |
2079 | log_message(f, "\n"); |
2080 | } |
2081 | } |
2082 | |
2083 | void notSuitablePrintf(struct singleEntry *entry, int okay, const char *fmt, |
2084 | ...) |
2085 | { |
2086 | static int once; |
2087 | va_list argp, argq; |
2088 | |
2089 | va_start(argp, fmt); |
2090 | |
2091 | va_copy(argq, argp); |
2092 | if (!once) { |
2093 | log_time(NULL); |
2094 | log_message(NULL, "command line: %s\n", saved_command_line); |
2095 | } |
2096 | log_message(NULL, "DBG: Image entry %s: ", |
2097 | okay ? "succeeded" : "failed"); |
2098 | log_vmessage(NULL, fmt, argq); |
2099 | |
2100 | printEntry(entry, NULL); |
2101 | va_end(argq); |
2102 | |
2103 | if (!debug) { |
2104 | once = 1; |
2105 | va_end(argp); |
2106 | return; |
2107 | } |
2108 | |
2109 | if (okay) { |
2110 | va_end(argp); |
2111 | return; |
2112 | } |
2113 | |
2114 | if (!once) |
2115 | log_message(stderr, "DBG: command line: %s\n", |
2116 | saved_command_line); |
2117 | once = 1; |
2118 | fprintf(stderr, "DBG: Image entry failed: "); |
2119 | vfprintf(stderr, fmt, argp); |
2120 | printEntry(entry, stderr); |
2121 | va_end(argp); |
2122 | } |
2123 | |
2124 | #define beginswith(s, c) ((s) && (s)[0] == (c)) |
2125 | |
2126 | static int endswith(const char *s, char c) |
2127 | { |
2128 | int slen; |
2129 | |
2130 | if (!s || !s[0]) |
2131 | return 0; |
2132 | slen = strlen(s) - 1; |
2133 | |
2134 | return s[slen] == c; |
2135 | } |
2136 | |
2137 | typedef struct { |
2138 | const char *start; |
2139 | size_t chars; |
2140 | } field; |
2141 | |
2142 | static int iscomma(int c) |
2143 | { |
2144 | return c == ','; |
2145 | } |
2146 | |
2147 | static int isequal(int c) |
2148 | { |
2149 | return c == '='; |
2150 | } |
2151 | |
2152 | static field findField(const field *in, typeof(isspace) *isdelim, field *out) |
2153 | { |
2154 | field nxt = {}; |
2155 | size_t off = 0; |
2156 | |
2157 | while (off < in->chars && isdelim(in->start[off])) |
2158 | off++; |
2159 | |
2160 | if (off == in->chars) |
2161 | return nxt; |
2162 | |
2163 | out->start = &in->start[off]; |
2164 | out->chars = 0; |
2165 | |
2166 | while (off + out->chars < in->chars && !isdelim(out->start[out->chars])) |
2167 | out->chars++; |
2168 | |
2169 | nxt.start = out->start + out->chars; |
2170 | nxt.chars = in->chars - off - out->chars; |
2171 | return nxt; |
2172 | } |
2173 | |
2174 | static int fieldEquals(const field *in, const char *str) |
2175 | { |
2176 | return in->chars == strlen(str) && |
2177 | strncmp(in->start, str, in->chars) == 0; |
2178 | } |
2179 | |
2180 | /* Parse /proc/mounts to determine the subvolume prefix. */ |
2181 | static size_t subvolPrefix(const char *str) |
2182 | { |
2183 | FILE *file = NULL; |
2184 | char *line = NULL; |
2185 | size_t prfx = 0; |
2186 | size_t size = 0; |
2187 | |
2188 | file = fopen(mounts, "r"); |
2189 | if (!file) |
2190 | return 0; |
2191 | |
2192 | for (ssize_t s; (s = getline(&line, &size, file)) >= 0; ) { |
2193 | field nxt = { line, s }; |
2194 | field dev = {}; |
2195 | field path = {}; |
2196 | field type = {}; |
2197 | field opts = {}; |
2198 | field opt = {}; |
2199 | |
2200 | nxt = findField(&nxt, isspace, &dev); |
2201 | if (!nxt.start) |
2202 | continue; |
2203 | |
2204 | nxt = findField(&nxt, isspace, &path); |
2205 | if (!nxt.start) |
2206 | continue; |
2207 | |
2208 | nxt = findField(&nxt, isspace, &type); |
2209 | if (!nxt.start) |
2210 | continue; |
2211 | |
2212 | nxt = findField(&nxt, isspace, &opts); |
2213 | if (!nxt.start) |
2214 | continue; |
2215 | |
2216 | if (!fieldEquals(&type, "btrfs")) |
2217 | continue; |
2218 | |
2219 | /* We have found a btrfs mount point. */ |
2220 | |
2221 | nxt = opts; |
2222 | while ((nxt = findField(&nxt, iscomma, &opt)).start) { |
2223 | field key = {}; |
2224 | field val = {}; |
2225 | |
2226 | opt = findField(&opt, isequal, &key); |
2227 | if (!opt.start) |
2228 | continue; |
2229 | |
2230 | opt = findField(&opt, isequal, &val); |
2231 | if (!opt.start) |
2232 | continue; |
2233 | |
2234 | if (!fieldEquals(&key, "subvol")) |
2235 | continue; |
2236 | |
2237 | /* We have found a btrfs subvolume mount point. */ |
2238 | |
2239 | if (strncmp(val.start, str, val.chars)) |
2240 | continue; |
2241 | |
2242 | if (val.start[val.chars - 1] != '/' && |
2243 | str[val.chars] != '/') |
2244 | continue; |
2245 | |
2246 | /* The subvolume mount point matches our input. */ |
2247 | |
2248 | if (prfx < val.chars) |
2249 | prfx = val.chars; |
2250 | } |
2251 | } |
2252 | |
2253 | dbgPrintf("%s(): str: '%s', prfx: '%s'\n", __FUNCTION__, str, prfx); |
2254 | |
2255 | fclose(file); |
2256 | free(line); |
2257 | return prfx; |
2258 | } |
2259 | |
2260 | int suitableImage(struct singleEntry *entry, const char *bootPrefix, |
2261 | int skipRemoved, int flags) |
2262 | { |
2263 | struct singleLine *line; |
2264 | char *fullName; |
2265 | int i; |
2266 | char *dev; |
2267 | size_t rs; |
2268 | char *rootdev; |
2269 | |
2270 | if (skipRemoved && entry->skip) { |
2271 | notSuitablePrintf(entry, 0, "marked to skip\n"); |
2272 | return 0; |
2273 | } |
2274 | |
2275 | line = |
2276 | getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16, |
2277 | entry->lines); |
2278 | if (!line) { |
2279 | notSuitablePrintf(entry, 0, "no line found\n"); |
2280 | return 0; |
2281 | } |
2282 | if (line->numElements < 2) { |
2283 | notSuitablePrintf(entry, 0, "line has only %d elements\n", |
2284 | line->numElements); |
2285 | return 0; |
2286 | } |
2287 | |
2288 | if (flags & GRUBBY_BADIMAGE_OKAY) { |
2289 | notSuitablePrintf(entry, 1, "\n"); |
2290 | return 1; |
2291 | } |
2292 | |
2293 | fullName = alloca(strlen(bootPrefix) + |
2294 | strlen(line->elements[1].item) + 1); |
2295 | rs = getRootSpecifier(line->elements[1].item); |
2296 | int hasslash = endswith(bootPrefix, '/') || |
2297 | beginswith(line->elements[1].item + rs, '/'); |
2298 | sprintf(fullName, "%s%s%s", bootPrefix, hasslash ? "" : "/", |
2299 | line->elements[1].item + rs); |
2300 | if (access(fullName, R_OK)) { |
2301 | notSuitablePrintf(entry, 0, "access to %s failed\n", fullName); |
2302 | return 0; |
2303 | } |
2304 | for (i = 2; i < line->numElements; i++) |
2305 | if (!strncasecmp(line->elements[i].item, "root=", 5)) |
2306 | break; |
2307 | if (i < line->numElements) { |
2308 | dev = line->elements[i].item + 5; |
2309 | } else { |
2310 | /* look for a lilo style LT_ROOT line */ |
2311 | line = getLineByType(LT_ROOT, entry->lines); |
2312 | |
2313 | if (line && line->numElements >= 2) { |
2314 | dev = line->elements[1].item; |
2315 | } else { |
2316 | /* didn't succeed in finding a LT_ROOT, let's try |
2317 | * LT_KERNELARGS. grub+multiboot uses LT_MBMODULE |
2318 | * for the args, so check that too. |
2319 | */ |
2320 | line = |
2321 | getLineByType(LT_KERNELARGS | LT_MBMODULE, |
2322 | entry->lines); |
2323 | |
2324 | /* failed to find one */ |
2325 | if (!line) { |
2326 | notSuitablePrintf(entry, 0, "no line found\n"); |
2327 | return 0; |
2328 | } |
2329 | |
2330 | for (i = 1; i < line->numElements; i++) |
2331 | if (!strncasecmp |
2332 | (line->elements[i].item, "root=", 5)) |
2333 | break; |
2334 | if (i < line->numElements) |
2335 | dev = line->elements[i].item + 5; |
2336 | else { |
2337 | notSuitablePrintf(entry, 0, |
2338 | "no root= entry found\n"); |
2339 | /* it failed too... can't find root= */ |
2340 | return 0; |
2341 | } |
2342 | } |
2343 | } |
2344 | |
2345 | dev = getpathbyspec(dev); |
2346 | if (!getpathbyspec(dev)) { |
2347 | notSuitablePrintf(entry, 0, "can't find blkid entry for %s\n", |
2348 | dev); |
2349 | return 0; |
2350 | } else |
2351 | dev = getpathbyspec(dev); |
2352 | |
2353 | rootdev = findDiskForRoot(); |
2354 | if (!rootdev) { |
2355 | notSuitablePrintf(entry, 0, "can't find root device\n"); |
2356 | return 0; |
2357 | } |
2358 | |
2359 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
2360 | notSuitablePrintf(entry, 0, |
2361 | "uuid missing: rootdev %s, dev %s\n", |
2362 | getuuidbydev(rootdev), getuuidbydev(dev)); |
2363 | free(rootdev); |
2364 | return 0; |
2365 | } |
2366 | |
2367 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
2368 | notSuitablePrintf(entry, 0, |
2369 | "uuid mismatch: rootdev %s, dev %s\n", |
2370 | getuuidbydev(rootdev), getuuidbydev(dev)); |
2371 | free(rootdev); |
2372 | return 0; |
2373 | } |
2374 | |
2375 | free(rootdev); |
2376 | notSuitablePrintf(entry, 1, "\n"); |
2377 | |
2378 | return 1; |
2379 | } |
2380 | |
2381 | /* returns the first match on or after the one pointed to by index (if index |
2382 | is not NULL) which is not marked as skip */ |
2383 | struct singleEntry *findEntryByPath(struct grubConfig *config, |
2384 | const char *kernel, const char *prefix, |
2385 | int *index) |
2386 | { |
2387 | struct singleEntry *entry = NULL; |
2388 | struct singleLine *line; |
2389 | int i; |
2390 | char *chptr; |
2391 | enum lineType_e checkType = LT_KERNEL; |
2392 | |
2393 | if (isdigit(*kernel)) { |
2394 | int *indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); |
2395 | |
2396 | i = 0; |
2397 | indexVars[i] = strtol(kernel, &chptr, 10); |
2398 | while (*chptr == ',') { |
2399 | i++; |
2400 | kernel = chptr + 1; |
2401 | indexVars[i] = strtol(kernel, &chptr, 10); |
2402 | } |
2403 | |
2404 | if (*chptr) { |
2405 | /* can't parse it, bail */ |
2406 | return NULL; |
2407 | } |
2408 | |
2409 | indexVars[i + 1] = -1; |
2410 | |
2411 | i = 0; |
2412 | if (index) { |
2413 | while (i < *index) { |
2414 | i++; |
2415 | if (indexVars[i] == -1) |
2416 | return NULL; |
2417 | } |
2418 | } |
2419 | |
2420 | entry = findEntryByIndex(config, indexVars[i]); |
2421 | if (!entry) |
2422 | return NULL; |
2423 | |
2424 | line = |
2425 | getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | |
2426 | LT_KERNEL_16, entry->lines); |
2427 | if (!line) |
2428 | return NULL; |
2429 | |
2430 | if (index) |
2431 | *index = indexVars[i]; |
2432 | return entry; |
2433 | } |
2434 | |
2435 | if (!strcmp(kernel, "DEFAULT")) { |
2436 | if (index && *index > config->defaultImage) { |
2437 | entry = NULL; |
2438 | } else { |
2439 | entry = findEntryByIndex(config, config->defaultImage); |
2440 | if (entry && entry->skip) |
2441 | entry = NULL; |
2442 | else if (index) |
2443 | *index = config->defaultImage; |
2444 | } |
2445 | } else if (!strcmp(kernel, "ALL")) { |
2446 | if (index) |
2447 | i = *index; |
2448 | else |
2449 | i = 0; |
2450 | |
2451 | while ((entry = findEntryByIndex(config, i))) { |
2452 | if (!entry->skip) |
2453 | break; |
2454 | i++; |
2455 | } |
2456 | |
2457 | if (entry && index) |
2458 | *index = i; |
2459 | } else { |
2460 | if (index) |
2461 | i = *index; |
2462 | else |
2463 | i = 0; |
2464 | |
2465 | if (!strncmp(kernel, "TITLE=", 6)) { |
2466 | prefix = ""; |
2467 | checkType = LT_TITLE | LT_MENUENTRY; |
2468 | kernel += 6; |
2469 | } |
2470 | |
2471 | for (entry = findEntryByIndex(config, i); entry; |
2472 | entry = entry->next, i++) { |
2473 | if (entry->skip) |
2474 | continue; |
2475 | |
2476 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", |
2477 | checkType, kernel, entry); |
2478 | |
2479 | /* check all the lines matching checkType */ |
2480 | for (line = entry->lines; line; line = line->next) { |
2481 | enum lineType_e ct = checkType; |
2482 | if (entry->multiboot && checkType == LT_KERNEL) |
2483 | ct = LT_KERNEL | LT_KERNEL_EFI | |
2484 | LT_MBMODULE | LT_HYPER | |
2485 | LT_KERNEL_16; |
2486 | else if (checkType & LT_KERNEL) |
2487 | ct = checkType | LT_KERNEL_EFI | |
2488 | LT_KERNEL_16; |
2489 | line = getLineByType(ct, line); |
2490 | if (!line) |
2491 | break; /* not found in this entry */ |
2492 | |
2493 | if (line && line->type != LT_MENUENTRY && |
2494 | line->numElements >= 2) { |
2495 | if (!strcmp(line->elements[1].item + |
2496 | getRootSpecifier( |
2497 | line->elements[1].item), |
2498 | kernel + strlen(prefix))) |
2499 | break; |
2500 | } |
2501 | if (line->type == LT_MENUENTRY && |
2502 | !strcmp(line->elements[1].item, kernel)) |
2503 | break; |
2504 | } |
2505 | |
2506 | /* make sure this entry has a kernel identifier; this skips |
2507 | * non-Linux boot entries (could find netbsd etc, though, which is |
2508 | * unfortunate) |
2509 | */ |
2510 | if (line |
2511 | && getLineByType(LT_KERNEL | LT_HYPER | |
2512 | LT_KERNEL_EFI | LT_KERNEL_16, |
2513 | entry->lines)) |
2514 | break; /* found 'im! */ |
2515 | } |
2516 | |
2517 | if (index) |
2518 | *index = i; |
2519 | } |
2520 | |
2521 | return entry; |
2522 | } |
2523 | |
2524 | struct singleEntry *findEntryByTitle(struct grubConfig *cfg, char *title, |
2525 | int *index) |
2526 | { |
2527 | struct singleEntry *entry; |
2528 | struct singleLine *line; |
2529 | int i; |
2530 | char *newtitle; |
2531 | |
2532 | for (i = 0, entry = cfg->entries; entry; entry = entry->next, i++) { |
2533 | if (index && i < *index) |
2534 | continue; |
2535 | line = getLineByType(LT_TITLE, entry->lines); |
2536 | if (!line) |
2537 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2538 | if (!line) |
2539 | continue; |
2540 | newtitle = grub2ExtractTitle(line); |
2541 | if (!newtitle) |
2542 | continue; |
2543 | if (!strcmp(title, newtitle)) |
2544 | break; |
2545 | } |
2546 | |
2547 | if (!entry) |
2548 | return NULL; |
2549 | |
2550 | if (index) |
2551 | *index = i; |
2552 | return entry; |
2553 | } |
2554 | |
2555 | struct singleEntry *findEntryByIndex(struct grubConfig *cfg, int index) |
2556 | { |
2557 | struct singleEntry *entry; |
2558 | |
2559 | entry = cfg->entries; |
2560 | while (index && entry) { |
2561 | entry = entry->next; |
2562 | index--; |
2563 | } |
2564 | |
2565 | return entry; |
2566 | } |
2567 | |
2568 | /* Find a good template to use for the new kernel. An entry is |
2569 | * good if the kernel and mkinitrd exist (even if the entry |
2570 | * is going to be removed). Try and use the default entry, but |
2571 | * if that doesn't work just take the first. If we can't find one, |
2572 | * bail. */ |
2573 | struct singleEntry *findTemplate(struct grubConfig *cfg, const char *prefix, |
2574 | int *indexPtr, int skipRemoved, int flags) |
2575 | { |
2576 | struct singleEntry *entry, *entry2; |
2577 | int index; |
2578 | |
2579 | if (cfg->cfi->defaultIsSaved) { |
2580 | if (cfg->cfi->getEnv) { |
2581 | char *defTitle = |
2582 | cfg->cfi->getEnv(cfg->cfi, "saved_entry"); |
2583 | if (defTitle) { |
2584 | int index = 0; |
2585 | if (isnumber(defTitle)) { |
2586 | index = atoi(defTitle); |
2587 | entry = findEntryByIndex(cfg, index); |
2588 | } else { |
2589 | entry = |
2590 | findEntryByTitle(cfg, defTitle, |
2591 | &index); |
2592 | } |
2593 | if (entry |
2594 | && suitableImage(entry, prefix, skipRemoved, |
2595 | flags)) { |
2596 | cfg->defaultImage = index; |
2597 | if (indexPtr) |
2598 | *indexPtr = index; |
2599 | return entry; |
2600 | } |
2601 | } |
2602 | } |
2603 | } else if (cfg->defaultImage >= FIRST_ENTRY_INDEX) { |
2604 | entry = findEntryByIndex(cfg, cfg->defaultImage); |
2605 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { |
2606 | if (indexPtr) |
2607 | *indexPtr = cfg->defaultImage; |
2608 | return entry; |
2609 | } |
2610 | } |
2611 | |
2612 | index = 0; |
2613 | while ((entry = findEntryByIndex(cfg, index))) { |
2614 | if (suitableImage(entry, prefix, skipRemoved, flags)) { |
2615 | int j, unmodifiedIndex; |
2616 | |
2617 | unmodifiedIndex = index; |
2618 | |
2619 | for (j = 0; j < unmodifiedIndex; j++) { |
2620 | entry2 = findEntryByIndex(cfg, j); |
2621 | if (entry2->skip) |
2622 | index--; |
2623 | } |
2624 | if (indexPtr) |
2625 | *indexPtr = index; |
2626 | |
2627 | return entry; |
2628 | } |
2629 | |
2630 | index++; |
2631 | } |
2632 | |
2633 | fprintf(stderr, |
2634 | _("grubby fatal error: unable to find a suitable template\n")); |
2635 | |
2636 | return NULL; |
2637 | } |
2638 | |
2639 | char *findBootPrefix(void) |
2640 | { |
2641 | struct stat sb, sb2; |
2642 | |
2643 | stat("/", &sb); |
2644 | #ifdef __ia64__ |
2645 | stat("/boot/efi/EFI/redhat/", &sb2); |
2646 | #else |
2647 | stat("/boot", &sb2); |
2648 | #endif |
2649 | |
2650 | if (sb.st_dev == sb2.st_dev) |
2651 | return strdup(""); |
2652 | |
2653 | #ifdef __ia64__ |
2654 | return strdup("/boot/efi/EFI/redhat/"); |
2655 | #else |
2656 | return strdup("/boot"); |
2657 | #endif |
2658 | } |
2659 | |
2660 | void markRemovedImage(struct grubConfig *cfg, const char *image, |
2661 | const char *prefix) |
2662 | { |
2663 | struct singleEntry *entry; |
2664 | |
2665 | if (!image) |
2666 | return; |
2667 | |
2668 | /* check and see if we're removing the default image */ |
2669 | if (isdigit(*image)) { |
2670 | entry = findEntryByPath(cfg, image, prefix, NULL); |
2671 | if (entry) |
2672 | entry->skip = 1; |
2673 | return; |
2674 | } |
2675 | |
2676 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) |
2677 | entry->skip = 1; |
2678 | } |
2679 | |
2680 | void setDefaultImage(struct grubConfig *config, int isAddingBootEntry, |
2681 | const char *defaultKernelPath, int newBootEntryIsDefault, |
2682 | const char *prefix, int flags, |
2683 | int newDefaultBootEntryIndex, int newBootEntryIndex) |
2684 | { |
2685 | struct singleEntry *bootEntry, *newDefault; |
2686 | int indexToVerify, firstKernelEntryIndex, currentLookupIndex; |
2687 | |
2688 | /* initialize */ |
2689 | currentLookupIndex = FIRST_ENTRY_INDEX; |
2690 | |
2691 | /* handle the two cases where the user explictly picks the default |
2692 | * boot entry index as it would exist post-modification */ |
2693 | |
2694 | /* Case 1: user chose to make the latest boot entry the default */ |
2695 | if (newBootEntryIsDefault) { |
2696 | config->defaultImage = newBootEntryIndex; |
2697 | return; |
2698 | } |
2699 | |
2700 | /* Case 2: user picked an arbitrary index as the default boot entry */ |
2701 | if (newDefaultBootEntryIndex >= FIRST_ENTRY_INDEX) { |
2702 | indexToVerify = newDefaultBootEntryIndex; |
2703 | |
2704 | /* user chose to make latest boot entry the default */ |
2705 | if (newDefaultBootEntryIndex == newBootEntryIndex) { |
2706 | config->defaultImage = newBootEntryIndex; |
2707 | return; |
2708 | } |
2709 | |
2710 | /* the user picks the default index based on the |
2711 | * order of the bootloader configuration after |
2712 | * modification; ensure we are checking for the |
2713 | * existence of the correct entry */ |
2714 | if (newBootEntryIndex < newDefaultBootEntryIndex) { |
2715 | if (!config->isModified) |
2716 | indexToVerify--; |
2717 | } |
2718 | |
2719 | /* verify the user selected index will exist */ |
2720 | if (findEntryByIndex(config, indexToVerify)) { |
2721 | config->defaultImage = newDefaultBootEntryIndex; |
2722 | } else { |
2723 | config->defaultImage = NO_DEFAULT_ENTRY; |
2724 | } |
2725 | |
2726 | return; |
2727 | } |
2728 | |
2729 | /* handle cases where the index value may shift */ |
2730 | |
2731 | /* check validity of existing default or first-entry-found |
2732 | selection */ |
2733 | if (defaultKernelPath) { |
2734 | /* we must initialize this */ |
2735 | firstKernelEntryIndex = 0; |
2736 | /* user requested first-entry-found */ |
2737 | if (!findEntryByPath(config, defaultKernelPath, |
2738 | prefix, &firstKernelEntryIndex)) { |
2739 | /* don't change default if can't find match */ |
2740 | config->defaultImage = NO_DEFAULT_ENTRY; |
2741 | return; |
2742 | } |
2743 | |
2744 | config->defaultImage = firstKernelEntryIndex; |
2745 | |
2746 | /* this is where we start looking for decrement later */ |
2747 | currentLookupIndex = config->defaultImage; |
2748 | |
2749 | if (isAddingBootEntry && !config->isModified && |
2750 | (newBootEntryIndex < config->defaultImage)) { |
2751 | /* increment because new entry added before default */ |
2752 | config->defaultImage++; |
2753 | } |
2754 | } else { |
2755 | /* check to see if the default is stored in the environment */ |
2756 | if (config->defaultImage < FIRST_ENTRY_INDEX) { |
2757 | if (config->defaultImage == DEFAULT_SAVED || config->defaultImage == DEFAULT_SAVED_GRUB2) |
2758 | { |
2759 | if (config->cfi->defaultIsSaved) { |
2760 | if (config->cfi->getEnv) { |
2761 | char *defaultTitle = config->cfi->getEnv(config->cfi, "saved_entry"); |
2762 | |
2763 | if (defaultTitle) { |
2764 | if (isnumber(defaultTitle)) { |
2765 | currentLookupIndex = atoi(defaultTitle); |
2766 | } else { |
2767 | findEntryByTitle(config, defaultTitle, ¤tLookupIndex); |
2768 | } |
2769 | /* set the default Image to an actual index */ |
2770 | config->defaultImage = currentLookupIndex; |
2771 | } |
2772 | } |
2773 | } |
2774 | } |
2775 | } else { |
2776 | /* use pre-existing default entry from the file*/ |
2777 | currentLookupIndex = config->defaultImage; |
2778 | } |
2779 | |
2780 | if (isAddingBootEntry |
2781 | && (newBootEntryIndex <= config->defaultImage)) { |
2782 | config->defaultImage++; |
2783 | |
2784 | if (config->isModified) { |
2785 | currentLookupIndex++; |
2786 | } |
2787 | } |
2788 | } |
2789 | |
2790 | /* sanity check - is this entry index valid? */ |
2791 | bootEntry = findEntryByIndex(config, currentLookupIndex); |
2792 | |
2793 | if ((bootEntry && bootEntry->skip) || !bootEntry) { |
2794 | /* entry is to be skipped or is invalid */ |
2795 | if (isAddingBootEntry) { |
2796 | config->defaultImage = newBootEntryIndex; |
2797 | return; |
2798 | } |
2799 | newDefault = |
2800 | findTemplate(config, prefix, &config->defaultImage, 1, |
2801 | flags); |
2802 | if (!newDefault) { |
2803 | config->defaultImage = NO_DEFAULT_ENTRY; |
2804 | } |
2805 | |
2806 | return; |
2807 | } |
2808 | |
2809 | currentLookupIndex--; |
2810 | |
2811 | /* decrement index by the total number of entries deleted */ |
2812 | |
2813 | for (indexToVerify = currentLookupIndex; |
2814 | indexToVerify >= FIRST_ENTRY_INDEX; indexToVerify--) { |
2815 | |
2816 | bootEntry = findEntryByIndex(config, indexToVerify); |
2817 | |
2818 | if (bootEntry && bootEntry->skip) { |
2819 | config->defaultImage--; |
2820 | } |
2821 | } |
2822 | } |
2823 | |
2824 | void setFallbackImage(struct grubConfig *config, int hasNew) |
2825 | { |
2826 | struct singleEntry *entry, *entry2; |
2827 | int j; |
2828 | |
2829 | if (config->fallbackImage == -1) |
2830 | return; |
2831 | |
2832 | entry = findEntryByIndex(config, config->fallbackImage); |
2833 | if (!entry || entry->skip) { |
2834 | config->fallbackImage = -1; |
2835 | return; |
2836 | } |
2837 | |
2838 | if (hasNew) |
2839 | config->fallbackImage++; |
2840 | |
2841 | /* count the number of entries erased before this one */ |
2842 | for (j = 0; j < config->fallbackImage; j++) { |
2843 | entry2 = findEntryByIndex(config, j); |
2844 | if (entry2->skip) |
2845 | config->fallbackImage--; |
2846 | } |
2847 | } |
2848 | |
2849 | void displayEntry(struct grubConfig *config, struct singleEntry *entry, const char *prefix, int index) |
2850 | { |
2851 | struct singleLine *line; |
2852 | char *root = NULL; |
2853 | int i; |
2854 | int j; |
2855 | |
2856 | printf("index=%d\n", index); |
2857 | |
2858 | line = |
2859 | getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | LT_KERNEL_16, |
2860 | entry->lines); |
2861 | if (!line) { |
2862 | printf("non linux entry\n"); |
2863 | return; |
2864 | } |
2865 | |
2866 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2867 | printf("kernel=%s\n", line->elements[1].item); |
2868 | else |
2869 | printf("kernel=%s%s\n", prefix, line->elements[1].item); |
2870 | |
2871 | if (line->numElements >= 3) { |
2872 | printf("args=\""); |
2873 | i = 2; |
2874 | while (i < line->numElements) { |
2875 | if (!strncmp(line->elements[i].item, "root=", 5)) { |
2876 | root = line->elements[i].item + 5; |
2877 | } else { |
2878 | printf("%s%s", line->elements[i].item, |
2879 | line->elements[i].indent); |
2880 | } |
2881 | |
2882 | i++; |
2883 | } |
2884 | printf("\"\n"); |
2885 | } else { |
2886 | line = getLineByType(LT_KERNELARGS, entry->lines); |
2887 | if (line) { |
2888 | char *s; |
2889 | |
2890 | printf("args=\""); |
2891 | i = 1; |
2892 | while (i < line->numElements) { |
2893 | if (!strncmp |
2894 | (line->elements[i].item, "root=", 5)) { |
2895 | root = line->elements[i].item + 5; |
2896 | } else { |
2897 | s = line->elements[i].item; |
2898 | |
2899 | printf("%s%s", s, |
2900 | line->elements[i].indent); |
2901 | } |
2902 | |
2903 | i++; |
2904 | } |
2905 | |
2906 | s = line->elements[i - 1].indent; |
2907 | printf("\"\n"); |
2908 | } |
2909 | } |
2910 | |
2911 | if (!root) { |
2912 | line = getLineByType(LT_ROOT, entry->lines); |
2913 | if (line && line->numElements >= 2) |
2914 | root = line->elements[1].item; |
2915 | } |
2916 | |
2917 | if (root) { |
2918 | char *s = alloca(strlen(root) + 1); |
2919 | |
2920 | strcpy(s, root); |
2921 | if (s[strlen(s) - 1] == '"') |
2922 | s[strlen(s) - 1] = '\0'; |
2923 | /* make sure the root doesn't have a trailing " */ |
2924 | printf("root=%s\n", s); |
2925 | } |
2926 | |
2927 | line = |
2928 | getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16, |
2929 | entry->lines); |
2930 | |
2931 | if (line && line->numElements >= 2) { |
2932 | if (!strncmp(prefix, line->elements[1].item, strlen(prefix))) |
2933 | printf("initrd="); |
2934 | else |
2935 | printf("initrd=%s", prefix); |
2936 | |
2937 | for (i = 1; i < line->numElements; i++) |
2938 | printf("%s%s", line->elements[i].item, |
2939 | line->elements[i].indent); |
2940 | printf("\n"); |
2941 | } |
2942 | |
2943 | line = getLineByType(LT_TITLE, entry->lines); |
2944 | if (line) { |
2945 | char *entryTitle; |
2946 | /* if we can extractTitle, then it's a zipl config and |
2947 | * if not then we go ahead with what's existed prior */ |
2948 | entryTitle = extractTitle(config, line); |
2949 | if (!entryTitle) { |
2950 | entryTitle=line->elements[1].item; |
2951 | } |
2952 | printf("title=%s\n", entryTitle); |
2953 | } else { |
2954 | char *title; |
2955 | line = getLineByType(LT_MENUENTRY, entry->lines); |
2956 | if (line) { |
2957 | title = grub2ExtractTitle(line); |
2958 | if (title) |
2959 | printf("title=%s\n", title); |
2960 | } |
2961 | } |
2962 | |
2963 | for (j = 0, line = entry->lines; line; line = line->next) { |
2964 | if ((line->type & LT_MBMODULE) && line->numElements >= 2) { |
2965 | if (!strncmp |
2966 | (prefix, line->elements[1].item, strlen(prefix))) |
2967 | printf("mbmodule%d=", j); |
2968 | else |
2969 | printf("mbmodule%d=%s", j, prefix); |
2970 | |
2971 | for (i = 1; i < line->numElements; i++) |
2972 | printf("%s%s", line->elements[i].item, |
2973 | line->elements[i].indent); |
2974 | printf("\n"); |
2975 | j++; |
2976 | } |
2977 | } |
2978 | } |
2979 | |
2980 | int isSuseSystem(void) |
2981 | { |
2982 | const char *path; |
2983 | const static char default_path[] = "/etc/SuSE-release"; |
2984 | |
2985 | if ((path = getenv("GRUBBY_SUSE_RELEASE")) == NULL) |
2986 | path = default_path; |
2987 | |
2988 | if (!access(path, R_OK)) |
2989 | return 1; |
2990 | return 0; |
2991 | } |
2992 | |
2993 | int isSuseGrubConf(const char *path) |
2994 | { |
2995 | FILE *grubConf; |
2996 | char *line = NULL; |
2997 | size_t len = 0, res = 0; |
2998 | |
2999 | grubConf = fopen(path, "r"); |
3000 | if (!grubConf) { |
3001 | dbgPrintf("Could not open SuSE configuration file '%s'\n", |
3002 | path); |
3003 | return 0; |
3004 | } |
3005 | |
3006 | while ((res = getline(&line, &len, grubConf)) != -1) { |
3007 | if (!strncmp(line, "setup", 5)) { |
3008 | fclose(grubConf); |
3009 | free(line); |
3010 | return 1; |
3011 | } |
3012 | } |
3013 | |
3014 | dbgPrintf("SuSE configuration file '%s' does not appear to be valid\n", |
3015 | path); |
3016 | |
3017 | fclose(grubConf); |
3018 | free(line); |
3019 | return 0; |
3020 | } |
3021 | |
3022 | int suseGrubConfGetLba(const char *path, int *lbaPtr) |
3023 | { |
3024 | FILE *grubConf; |
3025 | char *line = NULL; |
3026 | size_t res = 0, len = 0; |
3027 | |
3028 | if (!path) |
3029 | return 1; |
3030 | if (!lbaPtr) |
3031 | return 1; |
3032 | |
3033 | grubConf = fopen(path, "r"); |
3034 | if (!grubConf) |
3035 | return 1; |
3036 | |
3037 | while ((res = getline(&line, &len, grubConf)) != -1) { |
3038 | if (line[res - 1] == '\n') |
3039 | line[res - 1] = '\0'; |
3040 | else if (len > res) |
3041 | line[res] = '\0'; |
3042 | else { |
3043 | line = realloc(line, res + 1); |
3044 | line[res] = '\0'; |
3045 | } |
3046 | |
3047 | if (!strncmp(line, "setup", 5)) { |
3048 | if (strstr(line, "--force-lba")) { |
3049 | *lbaPtr = 1; |
3050 | } else { |
3051 | *lbaPtr = 0; |
3052 | } |
3053 | dbgPrintf("lba: %i\n", *lbaPtr); |
3054 | break; |
3055 | } |
3056 | } |
3057 | |
3058 | free(line); |
3059 | fclose(grubConf); |
3060 | return 0; |
3061 | } |
3062 | |
3063 | int suseGrubConfGetInstallDevice(const char *path, char **devicePtr) |
3064 | { |
3065 | FILE *grubConf; |
3066 | char *line = NULL; |
3067 | size_t res = 0, len = 0; |
3068 | char *lastParamPtr = NULL; |
3069 | char *secLastParamPtr = NULL; |
3070 | char installDeviceNumber = '\0'; |
3071 | char *bounds = NULL; |
3072 | |
3073 | if (!path) |
3074 | return 1; |
3075 | if (!devicePtr) |
3076 | return 1; |
3077 | |
3078 | grubConf = fopen(path, "r"); |
3079 | if (!grubConf) |
3080 | return 1; |
3081 | |
3082 | while ((res = getline(&line, &len, grubConf)) != -1) { |
3083 | if (strncmp(line, "setup", 5)) |
3084 | continue; |
3085 | |
3086 | if (line[res - 1] == '\n') |
3087 | line[res - 1] = '\0'; |
3088 | else if (len > res) |
3089 | line[res] = '\0'; |
3090 | else { |
3091 | line = realloc(line, res + 1); |
3092 | line[res] = '\0'; |
3093 | } |
3094 | |
3095 | lastParamPtr = bounds = line + res; |
3096 | |
3097 | /* Last parameter in grub may be an optional IMAGE_DEVICE */ |
3098 | while (!isspace(*lastParamPtr)) |
3099 | lastParamPtr--; |
3100 | lastParamPtr++; |
3101 | |
3102 | secLastParamPtr = lastParamPtr - 2; |
3103 | dbgPrintf("lastParamPtr: %s\n", lastParamPtr); |
3104 | |
3105 | if (lastParamPtr + 3 > bounds) { |
3106 | dbgPrintf("lastParamPtr going over boundary"); |
3107 | fclose(grubConf); |
3108 | free(line); |
3109 | return 1; |
3110 | } |
3111 | if (!strncmp(lastParamPtr, "(hd", 3)) |
3112 | lastParamPtr += 3; |
3113 | dbgPrintf("lastParamPtr: %c\n", *lastParamPtr); |
3114 | |
3115 | /* |
3116 | * Second last parameter will decide wether last parameter is |
3117 | * an IMAGE_DEVICE or INSTALL_DEVICE |
3118 | */ |
3119 | while (!isspace(*secLastParamPtr)) |
3120 | secLastParamPtr--; |
3121 | secLastParamPtr++; |
3122 | |
3123 | if (secLastParamPtr + 3 > bounds) { |
3124 | dbgPrintf("secLastParamPtr going over boundary"); |
3125 | fclose(grubConf); |
3126 | free(line); |
3127 | return 1; |
3128 | } |
3129 | dbgPrintf("secLastParamPtr: %s\n", secLastParamPtr); |
3130 | if (!strncmp(secLastParamPtr, "(hd", 3)) { |
3131 | secLastParamPtr += 3; |
3132 | dbgPrintf("secLastParamPtr: %c\n", *secLastParamPtr); |
3133 | installDeviceNumber = *secLastParamPtr; |
3134 | } else { |
3135 | installDeviceNumber = *lastParamPtr; |
3136 | } |
3137 | |
3138 | *devicePtr = malloc(6); |
3139 | snprintf(*devicePtr, 6, "(hd%c)", installDeviceNumber); |
3140 | dbgPrintf("installDeviceNumber: %c\n", installDeviceNumber); |
3141 | fclose(grubConf); |
3142 | free(line); |
3143 | return 0; |
3144 | } |
3145 | |
3146 | free(line); |
3147 | fclose(grubConf); |
3148 | return 1; |
3149 | } |
3150 | |
3151 | int grubGetBootFromDeviceMap(const char *device, char **bootPtr) |
3152 | { |
3153 | FILE *deviceMap; |
3154 | char *line = NULL; |
3155 | size_t res = 0, len = 0; |
3156 | char *devicePtr; |
3157 | char *bounds = NULL; |
3158 | const char *path; |
3159 | const static char default_path[] = "/boot/grub/device.map"; |
3160 | |
3161 | if (!device) |
3162 | return 1; |
3163 | if (!bootPtr) |
3164 | return 1; |
3165 | |
3166 | if ((path = getenv("GRUBBY_GRUB_DEVICE_MAP")) == NULL) |
3167 | path = default_path; |
3168 | |
3169 | dbgPrintf("opening grub device.map file from: %s\n", path); |
3170 | deviceMap = fopen(path, "r"); |
3171 | if (!deviceMap) |
3172 | return 1; |
3173 | |
3174 | while ((res = getline(&line, &len, deviceMap)) != -1) { |
3175 | if (!strncmp(line, "#", 1)) |
3176 | continue; |
3177 | |
3178 | if (line[res - 1] == '\n') |
3179 | line[res - 1] = '\0'; |
3180 | else if (len > res) |
3181 | line[res] = '\0'; |
3182 | else { |
3183 | line = realloc(line, res + 1); |
3184 | line[res] = '\0'; |
3185 | } |
3186 | |
3187 | devicePtr = line; |
3188 | bounds = line + res; |
3189 | |
3190 | while ((isspace(*line) && ((devicePtr + 1) <= bounds))) |
3191 | devicePtr++; |
3192 | dbgPrintf("device: %s\n", devicePtr); |
3193 | |
3194 | if (!strncmp(devicePtr, device, strlen(device))) { |
3195 | devicePtr += strlen(device); |
3196 | while (isspace(*devicePtr) |
3197 | && ((devicePtr + 1) <= bounds)) |
3198 | devicePtr++; |
3199 | |
3200 | *bootPtr = strdup(devicePtr); |
3201 | break; |
3202 | } |
3203 | } |
3204 | |
3205 | free(line); |
3206 | fclose(deviceMap); |
3207 | return 0; |
3208 | } |
3209 | |
3210 | int suseGrubConfGetBoot(const char *path, char **bootPtr) |
3211 | { |
3212 | char *grubDevice; |
3213 | |
3214 | if (suseGrubConfGetInstallDevice(path, &grubDevice)) |
3215 | dbgPrintf("error looking for grub installation device\n"); |
3216 | else |
3217 | dbgPrintf("grubby installation device: %s\n", grubDevice); |
3218 | |
3219 | if (grubGetBootFromDeviceMap(grubDevice, bootPtr)) |
3220 | dbgPrintf("error looking for grub boot device\n"); |
3221 | else |
3222 | dbgPrintf("grubby boot device: %s\n", *bootPtr); |
3223 | |
3224 | free(grubDevice); |
3225 | return 0; |
3226 | } |
3227 | |
3228 | int parseSuseGrubConf(int *lbaPtr, char **bootPtr) |
3229 | { |
3230 | /* |
3231 | * This SuSE grub configuration file at this location is not your |
3232 | * average grub configuration file, but instead the grub commands |
3233 | * used to setup grub on that system. |
3234 | */ |
3235 | const char *path; |
3236 | const static char default_path[] = "/etc/grub.conf"; |
3237 | |
3238 | if ((path = getenv("GRUBBY_SUSE_GRUB_CONF")) == NULL) |
3239 | path = default_path; |
3240 | |
3241 | if (!isSuseGrubConf(path)) |
3242 | return 1; |
3243 | |
3244 | if (lbaPtr) { |
3245 | *lbaPtr = 0; |
3246 | if (suseGrubConfGetLba(path, lbaPtr)) |
3247 | return 1; |
3248 | } |
3249 | |
3250 | if (bootPtr) { |
3251 | *bootPtr = NULL; |
3252 | suseGrubConfGetBoot(path, bootPtr); |
3253 | } |
3254 | |
3255 | return 0; |
3256 | } |
3257 | |
3258 | int parseSysconfigGrub(int *lbaPtr, char **bootPtr) |
3259 | { |
3260 | FILE *in; |
3261 | char buf[1024]; |
3262 | char *chptr; |
3263 | char *start; |
3264 | char *param; |
3265 | |
3266 | in = fopen("/etc/sysconfig/grub", "r"); |
3267 | if (!in) |
3268 | return 1; |
3269 | |
3270 | if (lbaPtr) |
3271 | *lbaPtr = 0; |
3272 | if (bootPtr) |
3273 | *bootPtr = NULL; |
3274 | |
3275 | while (fgets(buf, sizeof(buf), in)) { |
3276 | start = buf; |
3277 | while (isspace(*start)) |
3278 | start++; |
3279 | if (*start == '#') |
3280 | continue; |
3281 | |
3282 | chptr = strchr(start, '='); |
3283 | if (!chptr) |
3284 | continue; |
3285 | chptr--; |
3286 | while (*chptr && isspace(*chptr)) |
3287 | chptr--; |
3288 | chptr++; |
3289 | *chptr = '\0'; |
3290 | |
3291 | param = chptr + 1; |
3292 | while (*param && isspace(*param)) |
3293 | param++; |
3294 | if (*param == '=') { |
3295 | param++; |
3296 | while (*param && isspace(*param)) |
3297 | param++; |
3298 | } |
3299 | |
3300 | chptr = param; |
3301 | while (*chptr && !isspace(*chptr)) |
3302 | chptr++; |
3303 | *chptr = '\0'; |
3304 | |
3305 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) |
3306 | *lbaPtr = 1; |
3307 | else if (!strcmp(start, "boot") && bootPtr) |
3308 | *bootPtr = strdup(param); |
3309 | } |
3310 | |
3311 | fclose(in); |
3312 | |
3313 | return 0; |
3314 | } |
3315 | |
3316 | void dumpSysconfigGrub(void) |
3317 | { |
3318 | char *boot = NULL; |
3319 | int lba; |
3320 | |
3321 | if (isSuseSystem()) { |
3322 | if (parseSuseGrubConf(&lba, &boot)) { |
3323 | free(boot); |
3324 | return; |
3325 | } |
3326 | } else { |
3327 | if (parseSysconfigGrub(&lba, &boot)) { |
3328 | free(boot); |
3329 | return; |
3330 | } |
3331 | } |
3332 | |
3333 | if (lba) |
3334 | printf("lba\n"); |
3335 | if (boot) { |
3336 | printf("boot=%s\n", boot); |
3337 | free(boot); |
3338 | } |
3339 | } |
3340 | |
3341 | int displayInfo(struct grubConfig *config, char *kernel, const char *prefix) |
3342 | { |
3343 | int i = 0; |
3344 | struct singleEntry *entry; |
3345 | struct singleLine *line; |
3346 | |
3347 | entry = findEntryByPath(config, kernel, prefix, &i); |
3348 | if (!entry) { |
3349 | fprintf(stderr, _("grubby: kernel not found\n")); |
3350 | return 1; |
3351 | } |
3352 | |
3353 | /* this is a horrible hack to support /etc/sysconfig/grub; there must |
3354 | be a better way */ |
3355 | if (config->cfi == &grubConfigType) { |
3356 | dumpSysconfigGrub(); |
3357 | } else { |
3358 | line = getLineByType(LT_BOOT, config->theLines); |
3359 | if (line && line->numElements >= 1) { |
3360 | printf("boot=%s\n", line->elements[1].item); |
3361 | } |
3362 | |
3363 | line = getLineByType(LT_LBA, config->theLines); |
3364 | if (line) |
3365 | printf("lba\n"); |
3366 | } |
3367 | |
3368 | displayEntry(config, entry, prefix, i); |
3369 | |
3370 | i++; |
3371 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { |
3372 | displayEntry(config, entry, prefix, i); |
3373 | i++; |
3374 | } |
3375 | |
3376 | return 0; |
3377 | } |
3378 | |
3379 | struct singleLine *addLineTmpl(struct singleEntry *entry, |
3380 | struct singleLine *tmplLine, |
3381 | struct singleLine *prevLine, |
3382 | const char *val, struct configFileInfo *cfi) |
3383 | { |
3384 | struct singleLine *newLine = lineDup(tmplLine); |
3385 | |
3386 | if (isEfi && cfi == &grub2ConfigType) { |
3387 | enum lineType_e old = newLine->type; |
3388 | newLine->type = preferredLineType(newLine->type, cfi); |
3389 | if (old != newLine->type) |
3390 | newLine->elements[0].item = |
3391 | getKeyByType(newLine->type, cfi); |
3392 | } |
3393 | |
3394 | if (val) { |
3395 | /* override the inherited value with our own. |
3396 | * This is a little weak because it only applies to elements[1] |
3397 | */ |
3398 | if (newLine->numElements > 1) |
3399 | removeElement(newLine, 1); |
3400 | insertElement(newLine, val, 1, cfi); |
3401 | |
3402 | /* but try to keep the rootspec from the template... sigh */ |
3403 | if (tmplLine-> |
3404 | type & (LT_HYPER | LT_KERNEL | LT_MBMODULE | LT_INITRD | |
3405 | LT_KERNEL_EFI | LT_INITRD_EFI | LT_KERNEL_16 | |
3406 | LT_INITRD_16)) { |
3407 | const char *prfx = tmplLine->elements[1].item; |
3408 | size_t rs = getRootSpecifier(prfx); |
3409 | if (isinitrd(tmplLine->type)) { |
3410 | for (struct singleLine *l = entry->lines; |
3411 | rs == 0 && l; l = l->next) { |
3412 | if (iskernel(l->type)) { |
3413 | prfx = l->elements[1].item; |
3414 | rs = getRootSpecifier(prfx); |
3415 | break; |
3416 | } |
3417 | } |
3418 | } |
3419 | if (rs > 0) { |
3420 | free(newLine->elements[1].item); |
3421 | newLine->elements[1].item = sdupprintf( |
3422 | "%.*s%s", (int) rs, prfx, val); |
3423 | } |
3424 | } |
3425 | } |
3426 | |
3427 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? |
3428 | newLine->elements[0].item : ""); |
3429 | |
3430 | if (!entry->lines) { |
3431 | /* first one on the list */ |
3432 | entry->lines = newLine; |
3433 | } else if (prevLine) { |
3434 | /* add after prevLine */ |
3435 | newLine->next = prevLine->next; |
3436 | prevLine->next = newLine; |
3437 | } |
3438 | |
3439 | return newLine; |
3440 | } |
3441 | |
3442 | /* val may be NULL */ |
3443 | struct singleLine *addLine(struct singleEntry *entry, |
3444 | struct configFileInfo *cfi, |
3445 | enum lineType_e type, char *defaultIndent, |
3446 | const char *val) |
3447 | { |
3448 | struct singleLine *line, *prev; |
3449 | struct keywordTypes *kw; |
3450 | struct singleLine tmpl; |
3451 | |
3452 | /* NB: This function shouldn't allocate items on the heap, rather on |
3453 | * the stack since it calls addLineTmpl which will make copies. |
3454 | */ |
3455 | if (type == LT_TITLE && cfi->titleBracketed) { |
3456 | /* we're doing a bracketed title (zipl) */ |
3457 | tmpl.type = type; |
3458 | tmpl.numElements = 1; |
3459 | tmpl.elements = alloca(sizeof(*tmpl.elements)); |
3460 | tmpl.elements[0].item = alloca(strlen(val) + 3); |
3461 | sprintf(tmpl.elements[0].item, "[%s]", val); |
3462 | tmpl.elements[0].indent = ""; |
3463 | val = NULL; |
3464 | } else if (type == LT_MENUENTRY) { |
3465 | char *lineend = "--class gnu-linux --class gnu --class os {"; |
3466 | if (!val) { |
3467 | fprintf(stderr, |
3468 | "Line type LT_MENUENTRY requires a value\n"); |
3469 | abort(); |
3470 | } |
3471 | kw = getKeywordByType(type, cfi); |
3472 | if (!kw) { |
3473 | fprintf(stderr, |
3474 | "Looking up keyword for unknown type %d\n", |
3475 | type); |
3476 | abort(); |
3477 | } |
3478 | tmpl.indent = ""; |
3479 | tmpl.type = type; |
3480 | tmpl.numElements = 3; |
3481 | tmpl.elements = |
3482 | alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
3483 | tmpl.elements[0].item = kw->key; |
3484 | tmpl.elements[0].indent = alloca(2); |
3485 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
3486 | tmpl.elements[1].item = (char *)val; |
3487 | tmpl.elements[1].indent = alloca(2); |
3488 | sprintf(tmpl.elements[1].indent, "%c", kw->nextChar); |
3489 | tmpl.elements[2].item = alloca(strlen(lineend) + 1); |
3490 | strcpy(tmpl.elements[2].item, lineend); |
3491 | tmpl.elements[2].indent = ""; |
3492 | } else { |
3493 | kw = getKeywordByType(type, cfi); |
3494 | if (!kw) { |
3495 | fprintf(stderr, |
3496 | "Looking up keyword for unknown type %d\n", |
3497 | type); |
3498 | abort(); |
3499 | } |
3500 | tmpl.type = type; |
3501 | tmpl.numElements = val ? 2 : 1; |
3502 | tmpl.elements = |
3503 | alloca(sizeof(*tmpl.elements) * tmpl.numElements); |
3504 | tmpl.elements[0].item = kw->key; |
3505 | tmpl.elements[0].indent = alloca(2); |
3506 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); |
3507 | if (val) { |
3508 | tmpl.elements[1].item = (char *)val; |
3509 | tmpl.elements[1].indent = ""; |
3510 | } |
3511 | } |
3512 | |
3513 | /* The last non-empty line gives us the indention to us and the line |
3514 | * to insert after. Note that comments are considered empty lines, |
3515 | * which may not be ideal? If there are no lines or we are looking at |
3516 | * the first line, we use defaultIndent (the first line is normally |
3517 | * indented differently from the rest) */ |
3518 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
3519 | if (line->numElements) |
3520 | prev = line; |
3521 | /* fall back on the last line if prev isn't otherwise set */ |
3522 | if (!line->next && !prev) |
3523 | prev = line; |
3524 | } |
3525 | |
3526 | struct singleLine *menuEntry; |
3527 | menuEntry = getLineByType(LT_MENUENTRY, entry->lines); |
3528 | if (tmpl.type == LT_ENTRY_END) { |
3529 | if (menuEntry) |
3530 | tmpl.indent = menuEntry->indent; |
3531 | else |
3532 | tmpl.indent = defaultIndent ? : ""; |
3533 | } else if (tmpl.type != LT_MENUENTRY) { |
3534 | if (menuEntry) |
3535 | tmpl.indent = "\t"; |
3536 | else if (prev == entry->lines) |
3537 | tmpl.indent = defaultIndent ? : ""; |
3538 | else |
3539 | tmpl.indent = prev->indent; |
3540 | } |
3541 | |
3542 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
3543 | } |
3544 | |
3545 | void removeLine(struct singleEntry *entry, struct singleLine *line) |
3546 | { |
3547 | struct singleLine *prev; |
3548 | int i; |
3549 | |
3550 | for (i = 0; i < line->numElements; i++) { |
3551 | free(line->elements[i].item); |
3552 | free(line->elements[i].indent); |
3553 | } |
3554 | free(line->elements); |
3555 | free(line->indent); |
3556 | |
3557 | if (line == entry->lines) { |
3558 | entry->lines = line->next; |
3559 | } else { |
3560 | prev = entry->lines; |
3561 | while (prev->next != line) |
3562 | prev = prev->next; |
3563 | prev->next = line->next; |
3564 | } |
3565 | |
3566 | free(line); |
3567 | } |
3568 | |
3569 | static void requote(struct singleLine *tmplLine, struct configFileInfo *cfi) |
3570 | { |
3571 | struct singleLine newLine = { |
3572 | .indent = tmplLine->indent, |
3573 | .type = tmplLine->type, |
3574 | .next = tmplLine->next, |
3575 | }; |
3576 | int firstQuotedItem = -1; |
3577 | int quoteLen = 0; |
3578 | int j; |
3579 | int element = 0; |
3580 | char *c; |
3581 | |
3582 | c = malloc(strlen(tmplLine->elements[0].item) + 1); |
3583 | strcpy(c, tmplLine->elements[0].item); |
3584 | insertElement(&newLine, c, element++, cfi); |
3585 | free(c); |
3586 | c = NULL; |
3587 | |
3588 | for (j = 1; j < tmplLine->numElements; j++) { |
3589 | if (firstQuotedItem == -1) { |
3590 | quoteLen += strlen(tmplLine->elements[j].item); |
3591 | |
3592 | if (isquote(tmplLine->elements[j].item[0])) { |
3593 | firstQuotedItem = j; |
3594 | quoteLen += |
3595 | strlen(tmplLine->elements[j].indent); |
3596 | } else { |
3597 | c = malloc(quoteLen + 1); |
3598 | strcpy(c, tmplLine->elements[j].item); |
3599 | insertElement(&newLine, c, element++, cfi); |
3600 | free(c); |
3601 | quoteLen = 0; |
3602 | } |
3603 | } else { |
3604 | int itemlen = strlen(tmplLine->elements[j].item); |
3605 | quoteLen += itemlen; |
3606 | quoteLen += strlen(tmplLine->elements[j].indent); |
3607 | |
3608 | if (isquote(tmplLine->elements[j].item[itemlen - 1])) { |
3609 | c = malloc(quoteLen + 1); |
3610 | c[0] = '\0'; |
3611 | for (int i = firstQuotedItem; i < j + 1; i++) { |
3612 | strcat(c, tmplLine->elements[i].item); |
3613 | strcat(c, tmplLine->elements[i].indent); |
3614 | } |
3615 | insertElement(&newLine, c, element++, cfi); |
3616 | free(c); |
3617 | |
3618 | firstQuotedItem = -1; |
3619 | quoteLen = 0; |
3620 | } |
3621 | } |
3622 | } |
3623 | while (tmplLine->numElements) |
3624 | removeElement(tmplLine, 0); |
3625 | if (tmplLine->elements) |
3626 | free(tmplLine->elements); |
3627 | |
3628 | tmplLine->numElements = newLine.numElements; |
3629 | tmplLine->elements = newLine.elements; |
3630 | } |
3631 | |
3632 | static void insertElement(struct singleLine *line, |
3633 | const char *item, int insertHere, |
3634 | struct configFileInfo *cfi) |
3635 | { |
3636 | struct keywordTypes *kw; |
3637 | char indent[2] = ""; |
3638 | |
3639 | /* sanity check */ |
3640 | if (insertHere > line->numElements) { |
3641 | dbgPrintf |
3642 | ("insertElement() adjusting insertHere from %d to %d\n", |
3643 | insertHere, line->numElements); |
3644 | insertHere = line->numElements; |
3645 | } |
3646 | |
3647 | line->elements = realloc(line->elements, (line->numElements + 1) * |
3648 | sizeof(*line->elements)); |
3649 | memmove(&line->elements[insertHere + 1], |
3650 | &line->elements[insertHere], |
3651 | (line->numElements - insertHere) * sizeof(*line->elements)); |
3652 | line->elements[insertHere].item = strdup(item); |
3653 | |
3654 | kw = getKeywordByType(line->type, cfi); |
3655 | |
3656 | if (line->numElements == 0) { |
3657 | indent[0] = '\0'; |
3658 | } else if (insertHere == 0) { |
3659 | indent[0] = kw->nextChar; |
3660 | } else if (kw->separatorChar != '\0') { |
3661 | indent[0] = kw->separatorChar; |
3662 | } else { |
3663 | indent[0] = ' '; |
3664 | } |
3665 | |
3666 | if (insertHere > 0 && line->elements[insertHere - 1].indent[0] == '\0') { |
3667 | /* move the end-of-line forward */ |
3668 | line->elements[insertHere].indent = |
3669 | line->elements[insertHere - 1].indent; |
3670 | line->elements[insertHere - 1].indent = strdup(indent); |
3671 | } else { |
3672 | line->elements[insertHere].indent = strdup(indent); |
3673 | } |
3674 | |
3675 | line->numElements++; |
3676 | |
3677 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", |
3678 | line->elements[0].item, |
3679 | line->elements[insertHere].item, |
3680 | line->elements[insertHere].indent, insertHere); |
3681 | } |
3682 | |
3683 | static void removeElement(struct singleLine *line, int removeHere) |
3684 | { |
3685 | int i; |
3686 | |
3687 | /* sanity check */ |
3688 | if (removeHere >= line->numElements) |
3689 | return; |
3690 | |
3691 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, |
3692 | removeHere, line->elements[removeHere].item); |
3693 | |
3694 | free(line->elements[removeHere].item); |
3695 | |
3696 | if (removeHere > 1) { |
3697 | /* previous argument gets this argument's post-indentation */ |
3698 | free(line->elements[removeHere - 1].indent); |
3699 | line->elements[removeHere - 1].indent = |
3700 | line->elements[removeHere].indent; |
3701 | } else { |
3702 | free(line->elements[removeHere].indent); |
3703 | } |
3704 | |
3705 | /* now collapse the array, but don't bother to realloc smaller */ |
3706 | for (i = removeHere; i < line->numElements - 1; i++) |
3707 | line->elements[i] = line->elements[i + 1]; |
3708 | |
3709 | line->numElements--; |
3710 | } |
3711 | |
3712 | static int argNameMatch(const char *one, const char *two) |
3713 | { |
3714 | char *first, *second; |
3715 | char *chptra, *chptrb; |
3716 | int rc; |
3717 | |
3718 | first = strcpy(alloca(strlen(one) + 1), one); |
3719 | second = strcpy(alloca(strlen(two) + 1), two); |
3720 | |
3721 | chptra = strchr(first, '='); |
3722 | if (chptra) |
3723 | *chptra = '\0'; |
3724 | |
3725 | chptrb = strchr(second, '='); |
3726 | if (chptrb) |
3727 | *chptrb = '\0'; |
3728 | |
3729 | rc = strcmp(first, second); |
3730 | |
3731 | if (chptra) |
3732 | *chptra = '='; |
3733 | if (chptrb) |
3734 | *chptrb = '='; |
3735 | |
3736 | return rc; |
3737 | } |
3738 | |
3739 | static int argHasValue(const char *arg) |
3740 | { |
3741 | char *chptr; |
3742 | |
3743 | chptr = strchr(arg, '='); |
3744 | if (chptr) |
3745 | return 1; |
3746 | return 0; |
3747 | } |
3748 | |
3749 | static int argValueMatch(const char *one, const char *two) |
3750 | { |
3751 | char *first, *second; |
3752 | char *chptra, *chptrb; |
3753 | |
3754 | first = strcpy(alloca(strlen(one) + 1), one); |
3755 | second = strcpy(alloca(strlen(two) + 1), two); |
3756 | |
3757 | chptra = strchr(first, '='); |
3758 | if (chptra) |
3759 | chptra += 1; |
3760 | |
3761 | chptrb = strchr(second, '='); |
3762 | if (chptrb) |
3763 | chptrb += 1; |
3764 | |
3765 | if (!chptra && !chptrb) |
3766 | return 0; |
3767 | else if (!chptra && chptrb) |
3768 | return *chptrb - 0; |
3769 | else if (!chptrb && chptra) |
3770 | return 0 - *chptra; |
3771 | else |
3772 | return strcmp(chptra, chptrb); |
3773 | } |
3774 | |
3775 | int updateActualImage(struct grubConfig *cfg, const char *image, |
3776 | const char *prefix, const char *addArgs, |
3777 | const char *removeArgs, int multibootArgs) |
3778 | { |
3779 | struct singleEntry *entry; |
3780 | struct singleLine *line, *rootLine; |
3781 | int index = 0; |
3782 | int i, k; |
3783 | const char **newArgs, **oldArgs; |
3784 | const char **arg; |
3785 | int useKernelArgs, useRoot; |
3786 | int firstElement; |
3787 | int *usedElements; |
3788 | int doreplace; |
3789 | |
3790 | if (!image) |
3791 | return 0; |
3792 | |
3793 | if (!addArgs) { |
3794 | newArgs = malloc(sizeof(*newArgs)); |
3795 | *newArgs = NULL; |
3796 | } else { |
3797 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { |
3798 | fprintf(stderr, |
3799 | _("grubby: error separating arguments '%s'\n"), |
3800 | addArgs); |
3801 | return 1; |
3802 | } |
3803 | } |
3804 | |
3805 | if (!removeArgs) { |
3806 | oldArgs = malloc(sizeof(*oldArgs)); |
3807 | *oldArgs = NULL; |
3808 | } else { |
3809 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { |
3810 | fprintf(stderr, |
3811 | _("grubby: error separating arguments '%s'\n"), |
3812 | removeArgs); |
3813 | free(newArgs); |
3814 | return 1; |
3815 | } |
3816 | } |
3817 | |
3818 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
3819 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); |
3820 | |
3821 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
3822 | && !multibootArgs); |
3823 | |
3824 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
3825 | |
3826 | if (multibootArgs && !entry->multiboot) |
3827 | continue; |
3828 | |
3829 | /* Determine where to put the args. If this config supports |
3830 | * LT_KERNELARGS, use that. Otherwise use |
3831 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. |
3832 | */ |
3833 | if (useKernelArgs) { |
3834 | line = getLineByType(LT_KERNELARGS, entry->lines); |
3835 | if (!line) { |
3836 | /* no LT_KERNELARGS, need to add it */ |
3837 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, |
3838 | cfg->secondaryIndent, NULL); |
3839 | } |
3840 | firstElement = 1; |
3841 | |
3842 | } else if (multibootArgs) { |
3843 | line = getLineByType(LT_HYPER, entry->lines); |
3844 | if (!line) { |
3845 | /* a multiboot entry without LT_HYPER? */ |
3846 | continue; |
3847 | } |
3848 | firstElement = 2; |
3849 | |
3850 | } else { |
3851 | line = |
3852 | getLineByType(LT_KERNEL | LT_MBMODULE | |
3853 | LT_KERNEL_EFI | LT_KERNEL_16, |
3854 | entry->lines); |
3855 | if (!line) { |
3856 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ |
3857 | continue; |
3858 | } |
3859 | firstElement = 2; |
3860 | } |
3861 | |
3862 | /* handle the elilo case which does: |
3863 | * append="hypervisor args -- kernel args" |
3864 | */ |
3865 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { |
3866 | /* this is a multiboot entry, make sure there's |
3867 | * -- on the args line |
3868 | */ |
3869 | for (i = firstElement; i < line->numElements; i++) { |
3870 | if (!strcmp(line->elements[i].item, "--")) |
3871 | break; |
3872 | } |
3873 | if (i == line->numElements) { |
3874 | /* assume all existing args are kernel args, |
3875 | * prepend -- to make it official |
3876 | */ |
3877 | insertElement(line, "--", firstElement, |
3878 | cfg->cfi); |
3879 | i = firstElement; |
3880 | } |
3881 | if (!multibootArgs) { |
3882 | /* kernel args start after the -- */ |
3883 | firstElement = i + 1; |
3884 | } |
3885 | } else if (cfg->cfi->mbConcatArgs) { |
3886 | /* this is a non-multiboot entry, remove hyper args */ |
3887 | for (i = firstElement; i < line->numElements; i++) { |
3888 | if (!strcmp(line->elements[i].item, "--")) |
3889 | break; |
3890 | } |
3891 | if (i < line->numElements) { |
3892 | /* remove args up to -- */ |
3893 | while (strcmp |
3894 | (line->elements[firstElement].item, |
3895 | "--")) |
3896 | removeElement(line, firstElement); |
3897 | /* remove -- */ |
3898 | removeElement(line, firstElement); |
3899 | } |
3900 | } |
3901 | |
3902 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
3903 | |
3904 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
3905 | |
3906 | doreplace = 1; |
3907 | for (i = firstElement; i < line->numElements; i++) { |
3908 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
3909 | !strcmp(line->elements[i].item, "--")) { |
3910 | /* reached the end of hyper args, insert here */ |
3911 | doreplace = 0; |
3912 | break; |
3913 | } |
3914 | if (usedElements[i]) |
3915 | continue; |
3916 | if (!argNameMatch(line->elements[i].item, *arg)) { |
3917 | usedElements[i] = 1; |
3918 | break; |
3919 | } |
3920 | } |
3921 | |
3922 | if (i < line->numElements && doreplace) { |
3923 | /* direct replacement */ |
3924 | free(line->elements[i].item); |
3925 | line->elements[i].item = strdup(*arg); |
3926 | |
3927 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
3928 | /* root= replacement */ |
3929 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3930 | if (rootLine) { |
3931 | free(rootLine->elements[1].item); |
3932 | rootLine->elements[1].item = |
3933 | strdup(*arg + 5); |
3934 | } else { |
3935 | rootLine = |
3936 | addLine(entry, cfg->cfi, LT_ROOT, |
3937 | cfg->secondaryIndent, |
3938 | *arg + 5); |
3939 | } |
3940 | } |
3941 | |
3942 | else { |
3943 | /* insert/append */ |
3944 | insertElement(line, *arg, i, cfg->cfi); |
3945 | usedElements = |
3946 | realloc(usedElements, |
3947 | line->numElements * |
3948 | sizeof(*usedElements)); |
3949 | memmove(&usedElements[i + 1], &usedElements[i], |
3950 | line->numElements - i - 1); |
3951 | usedElements[i] = 1; |
3952 | |
3953 | /* if we updated a root= here even though |
3954 | * there is a LT_ROOT available we need to |
3955 | * remove the LT_ROOT entry (this will happen |
3956 | * if we switch from a device to a label) */ |
3957 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
3958 | rootLine = |
3959 | getLineByType(LT_ROOT, |
3960 | entry->lines); |
3961 | if (rootLine) |
3962 | removeLine(entry, rootLine); |
3963 | } |
3964 | } |
3965 | } |
3966 | |
3967 | free(usedElements); |
3968 | |
3969 | for (arg = oldArgs; *arg; arg++) { |
3970 | for (i = firstElement; i < line->numElements; i++) { |
3971 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
3972 | !strcmp(line->elements[i].item, "--")) |
3973 | /* reached the end of hyper args, stop here */ |
3974 | break; |
3975 | if (!argNameMatch(line->elements[i].item, *arg)) { |
3976 | if (!argHasValue(*arg) || |
3977 | !argValueMatch(line->elements[i].item, *arg)) { |
3978 | removeElement(line, i); |
3979 | break; |
3980 | } |
3981 | } |
3982 | } |
3983 | /* handle removing LT_ROOT line too */ |
3984 | if (useRoot && !strncmp(*arg, "root=", 5)) { |
3985 | rootLine = getLineByType(LT_ROOT, entry->lines); |
3986 | if (rootLine) |
3987 | removeLine(entry, rootLine); |
3988 | } |
3989 | } |
3990 | |
3991 | if (line->numElements == 1) { |
3992 | /* don't need the line at all (note it has to be a |
3993 | LT_KERNELARGS for this to happen */ |
3994 | removeLine(entry, line); |
3995 | } |
3996 | } |
3997 | |
3998 | free(newArgs); |
3999 | free(oldArgs); |
4000 | |
4001 | return 0; |
4002 | } |
4003 | |
4004 | int updateImage(struct grubConfig *cfg, const char *image, |
4005 | const char *prefix, const char *addArgs, |
4006 | const char *removeArgs, |
4007 | const char *addMBArgs, const char *removeMBArgs) |
4008 | { |
4009 | int rc = 0; |
4010 | |
4011 | if (!image) |
4012 | return rc; |
4013 | |
4014 | /* update the main args first... */ |
4015 | if (addArgs || removeArgs) |
4016 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, |
4017 | 0); |
4018 | if (rc) |
4019 | return rc; |
4020 | |
4021 | /* and now any multiboot args */ |
4022 | if (addMBArgs || removeMBArgs) |
4023 | rc = updateActualImage(cfg, image, prefix, addMBArgs, |
4024 | removeMBArgs, 1); |
4025 | return rc; |
4026 | } |
4027 | |
4028 | int addMBInitrd(struct grubConfig *cfg, const char *newMBKernel, |
4029 | const char *image, const char *prefix, const char *initrd, |
4030 | const char *title) |
4031 | { |
4032 | struct singleEntry *entry; |
4033 | struct singleLine *line, *kernelLine, *endLine = NULL; |
4034 | int index = 0; |
4035 | |
4036 | if (!image) |
4037 | return 0; |
4038 | |
4039 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
4040 | kernelLine = getLineByType(LT_MBMODULE, entry->lines); |
4041 | if (!kernelLine) |
4042 | continue; |
4043 | |
4044 | /* if title is supplied, the entry's title must match it. */ |
4045 | if (title) { |
4046 | char *linetitle; |
4047 | |
4048 | line = |
4049 | getLineByType(LT_TITLE | LT_MENUENTRY, |
4050 | entry->lines); |
4051 | if (!line) |
4052 | continue; |
4053 | |
4054 | linetitle = extractTitle(cfg, line); |
4055 | if (!linetitle) |
4056 | continue; |
4057 | if (strcmp(title, linetitle)) { |
4058 | free(linetitle); |
4059 | continue; |
4060 | } |
4061 | free(linetitle); |
4062 | } |
4063 | |
4064 | if (prefix) { |
4065 | int prefixLen = strlen(prefix); |
4066 | if (!strncmp(initrd, prefix, prefixLen)) |
4067 | initrd += prefixLen; |
4068 | } |
4069 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
4070 | if (endLine) |
4071 | removeLine(entry, endLine); |
4072 | line = |
4073 | addLine(entry, cfg->cfi, |
4074 | preferredLineType(LT_MBMODULE, cfg->cfi), |
4075 | kernelLine->indent, initrd); |
4076 | if (!line) |
4077 | return 1; |
4078 | if (endLine) { |
4079 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
4080 | if (!line) |
4081 | return 1; |
4082 | } |
4083 | |
4084 | break; |
4085 | } |
4086 | |
4087 | return 0; |
4088 | } |
4089 | |
4090 | int updateInitrd(struct grubConfig *cfg, const char *image, |
4091 | const char *prefix, const char *initrd, const char *title) |
4092 | { |
4093 | struct singleEntry *entry; |
4094 | struct singleLine *line, *kernelLine, *endLine = NULL; |
4095 | int index = 0; |
4096 | |
4097 | if (!image) |
4098 | return 0; |
4099 | |
4100 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
4101 | kernelLine = |
4102 | getLineByType(LT_KERNEL | LT_KERNEL_EFI | LT_KERNEL_16, |
4103 | entry->lines); |
4104 | if (!kernelLine) |
4105 | continue; |
4106 | |
4107 | /* if title is supplied, the entry's title must match it. */ |
4108 | if (title) { |
4109 | char *linetitle; |
4110 | |
4111 | line = |
4112 | getLineByType(LT_TITLE | LT_MENUENTRY, |
4113 | entry->lines); |
4114 | if (!line) |
4115 | continue; |
4116 | |
4117 | linetitle = extractTitle(cfg, line); |
4118 | if (!linetitle) |
4119 | continue; |
4120 | if (strcmp(title, linetitle)) { |
4121 | free(linetitle); |
4122 | continue; |
4123 | } |
4124 | free(linetitle); |
4125 | } |
4126 | |
4127 | line = |
4128 | getLineByType(LT_INITRD | LT_INITRD_EFI | LT_INITRD_16, |
4129 | entry->lines); |
4130 | if (line) |
4131 | removeLine(entry, line); |
4132 | if (prefix) { |
4133 | int prefixLen = strlen(prefix); |
4134 | if (!strncmp(initrd, prefix, prefixLen)) |
4135 | initrd += prefixLen; |
4136 | } |
4137 | endLine = getLineByType(LT_ENTRY_END, entry->lines); |
4138 | if (endLine) |
4139 | removeLine(entry, endLine); |
4140 | enum lineType_e lt; |
4141 | switch (kernelLine->type) { |
4142 | case LT_KERNEL: |
4143 | lt = LT_INITRD; |
4144 | break; |
4145 | case LT_KERNEL_EFI: |
4146 | lt = LT_INITRD_EFI; |
4147 | break; |
4148 | case LT_KERNEL_16: |
4149 | lt = LT_INITRD_16; |
4150 | break; |
4151 | default: |
4152 | lt = preferredLineType(LT_INITRD, cfg->cfi); |
4153 | } |
4154 | line = addLine(entry, cfg->cfi, lt, kernelLine->indent, initrd); |
4155 | if (!line) |
4156 | return 1; |
4157 | if (endLine) { |
4158 | line = addLine(entry, cfg->cfi, LT_ENTRY_END, "", NULL); |
4159 | if (!line) |
4160 | return 1; |
4161 | } |
4162 | |
4163 | break; |
4164 | } |
4165 | |
4166 | return 0; |
4167 | } |
4168 | |
4169 | int checkDeviceBootloader(const char *device, const unsigned char *boot) |
4170 | { |
4171 | int fd; |
4172 | unsigned char bootSect[512]; |
4173 | int offset; |
4174 | |
4175 | fd = open(device, O_RDONLY); |
4176 | if (fd < 0) { |
4177 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
4178 | device, strerror(errno)); |
4179 | return 1; |
4180 | } |
4181 | |
4182 | if (read(fd, bootSect, 512) != 512) { |
4183 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
4184 | device, strerror(errno)); |
4185 | return 1; |
4186 | } |
4187 | close(fd); |
4188 | |
4189 | /* first three bytes should match, a jmp short should be in there */ |
4190 | if (memcmp(boot, bootSect, 3)) |
4191 | return 0; |
4192 | |
4193 | if (boot[1] == JMP_SHORT_OPCODE) { |
4194 | offset = boot[2] + 2; |
4195 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { |
4196 | offset = (boot[3] << 8) + boot[2] + 2; |
4197 | } else if (boot[0] == JMP_SHORT_OPCODE) { |
4198 | offset = boot[1] + 2; |
4199 | /* |
4200 | * it looks like grub, when copying stage1 into the mbr, |
4201 | * patches stage1 right after the JMP location, replacing |
4202 | * other instructions such as JMPs for NOOPs. So, relax the |
4203 | * check a little bit by skipping those different bytes. |
4204 | */ |
4205 | if ((bootSect[offset + 1] == NOOP_OPCODE) |
4206 | && (bootSect[offset + 2] == NOOP_OPCODE)) { |
4207 | offset = offset + 3; |
4208 | } |
4209 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { |
4210 | offset = (boot[2] << 8) + boot[1] + 2; |
4211 | } else { |
4212 | return 0; |
4213 | } |
4214 | |
4215 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) |
4216 | return 0; |
4217 | |
4218 | return 2; |
4219 | } |
4220 | |
4221 | int checkLiloOnRaid(char *mdDev, const unsigned char *boot) |
4222 | { |
4223 | int fd; |
4224 | char buf[65536]; |
4225 | char *end; |
4226 | char *chptr; |
4227 | char *chptr2; |
4228 | int rc; |
4229 | |
4230 | /* it's on raid; we need to parse /proc/mdstat and check all of the |
4231 | *raw* devices listed in there */ |
4232 | |
4233 | if (!strncmp(mdDev, "/dev/", 5)) |
4234 | mdDev += 5; |
4235 | |
4236 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { |
4237 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), |
4238 | strerror(errno)); |
4239 | return 2; |
4240 | } |
4241 | |
4242 | rc = read(fd, buf, sizeof(buf) - 1); |
4243 | if (rc < 0 || rc == (sizeof(buf) - 1)) { |
4244 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), |
4245 | strerror(errno)); |
4246 | close(fd); |
4247 | return 2; |
4248 | } |
4249 | close(fd); |
4250 | buf[rc] = '\0'; |
4251 | |
4252 | chptr = buf; |
4253 | while (*chptr) { |
4254 | end = strchr(chptr, '\n'); |
4255 | if (!end) |
4256 | break; |
4257 | *end = '\0'; |
4258 | |
4259 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && |
4260 | chptr[strlen(mdDev)] == ' ') { |
4261 | |
4262 | /* found the device */ |
4263 | while (*chptr && *chptr != ':') |
4264 | chptr++; |
4265 | chptr++; |
4266 | while (*chptr && isspace(*chptr)) |
4267 | chptr++; |
4268 | |
4269 | /* skip the "active" bit */ |
4270 | while (*chptr && !isspace(*chptr)) |
4271 | chptr++; |
4272 | while (*chptr && isspace(*chptr)) |
4273 | chptr++; |
4274 | |
4275 | /* skip the raid level */ |
4276 | while (*chptr && !isspace(*chptr)) |
4277 | chptr++; |
4278 | while (*chptr && isspace(*chptr)) |
4279 | chptr++; |
4280 | |
4281 | /* everything else is partition stuff */ |
4282 | while (*chptr) { |
4283 | chptr2 = chptr; |
4284 | while (*chptr2 && *chptr2 != '[') |
4285 | chptr2++; |
4286 | if (!*chptr2) |
4287 | break; |
4288 | |
4289 | /* yank off the numbers at the end */ |
4290 | chptr2--; |
4291 | while (isdigit(*chptr2) && chptr2 > chptr) |
4292 | chptr2--; |
4293 | chptr2++; |
4294 | *chptr2 = '\0'; |
4295 | |
4296 | /* Better, now we need the /dev/ back. We're |
4297 | * done with everything before this point, so |
4298 | * we can just put the /dev/ part there. |
4299 | * There will always be room. */ |
4300 | memcpy(chptr - 5, "/dev/", 5); |
4301 | rc = checkDeviceBootloader(chptr - 5, boot); |
4302 | if (rc != 2) { |
4303 | return rc; |
4304 | } |
4305 | |
4306 | chptr = chptr2 + 1; |
4307 | /* skip the [11] bit */ |
4308 | while (*chptr && !isspace(*chptr)) |
4309 | chptr++; |
4310 | /* and move to the next one */ |
4311 | while (*chptr && isspace(*chptr)) |
4312 | chptr++; |
4313 | } |
4314 | |
4315 | /* we're good to go */ |
4316 | return 2; |
4317 | } |
4318 | |
4319 | chptr = end + 1; |
4320 | } |
4321 | |
4322 | fprintf(stderr, |
4323 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), |
4324 | mdDev); |
4325 | return 0; |
4326 | } |
4327 | |
4328 | int checkForLilo(struct grubConfig *config) |
4329 | { |
4330 | int fd; |
4331 | unsigned char boot[512]; |
4332 | struct singleLine *line; |
4333 | |
4334 | for (line = config->theLines; line; line = line->next) |
4335 | if (line->type == LT_BOOT) |
4336 | break; |
4337 | |
4338 | if (!line) { |
4339 | fprintf(stderr, |
4340 | _ |
4341 | ("grubby: no boot line found in lilo configuration\n")); |
4342 | return 1; |
4343 | } |
4344 | |
4345 | if (line->numElements != 2) |
4346 | return 1; |
4347 | |
4348 | fd = open("/boot/boot.b", O_RDONLY); |
4349 | if (fd < 0) { |
4350 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), |
4351 | "/boot/boot.b", strerror(errno)); |
4352 | return 1; |
4353 | } |
4354 | |
4355 | if (read(fd, boot, 512) != 512) { |
4356 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
4357 | "/boot/boot.b", strerror(errno)); |
4358 | return 1; |
4359 | } |
4360 | close(fd); |
4361 | |
4362 | if (!strncmp("/dev/md", line->elements[1].item, 7)) |
4363 | return checkLiloOnRaid(line->elements[1].item, boot); |
4364 | |
4365 | return checkDeviceBootloader(line->elements[1].item, boot); |
4366 | } |
4367 | |
4368 | int checkForGrub2(struct grubConfig *config) |
4369 | { |
4370 | if (!access("/etc/grub.d/", R_OK)) |
4371 | return 2; |
4372 | |
4373 | return 1; |
4374 | } |
4375 | |
4376 | int checkForGrub(struct grubConfig *config) |
4377 | { |
4378 | int fd; |
4379 | unsigned char bootSect[512]; |
4380 | char *boot; |
4381 | int onSuse = isSuseSystem(); |
4382 | |
4383 | if (onSuse) { |
4384 | if (parseSuseGrubConf(NULL, &boot)) |
4385 | return 0; |
4386 | } else { |
4387 | if (parseSysconfigGrub(NULL, &boot)) |
4388 | return 0; |
4389 | } |
4390 | |
4391 | /* assume grub is not installed -- not an error condition */ |
4392 | if (!boot) |
4393 | return 0; |
4394 | |
4395 | fd = open("/boot/grub/stage1", O_RDONLY); |
4396 | if (fd < 0) |
4397 | /* this doesn't exist if grub hasn't been installed */ |
4398 | return 0; |
4399 | |
4400 | if (read(fd, bootSect, 512) != 512) { |
4401 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
4402 | "/boot/grub/stage1", strerror(errno)); |
4403 | close(fd); |
4404 | return 1; |
4405 | } |
4406 | close(fd); |
4407 | |
4408 | /* The more elaborate checks do not work on SuSE. The checks done |
4409 | * seem to be reasonble (at least for now), so just return success |
4410 | */ |
4411 | if (onSuse) |
4412 | return 2; |
4413 | |
4414 | return checkDeviceBootloader(boot, bootSect); |
4415 | } |
4416 | |
4417 | int checkForExtLinux(struct grubConfig *config) |
4418 | { |
4419 | int fd; |
4420 | unsigned char bootSect[512]; |
4421 | char *boot; |
4422 | char executable[] = "/boot/extlinux/extlinux"; |
4423 | |
4424 | printf("entered: checkForExtLinux()\n"); |
4425 | |
4426 | if (parseSysconfigGrub(NULL, &boot)) |
4427 | return 0; |
4428 | |
4429 | /* assume grub is not installed -- not an error condition */ |
4430 | if (!boot) |
4431 | return 0; |
4432 | |
4433 | fd = open(executable, O_RDONLY); |
4434 | if (fd < 0) |
4435 | /* this doesn't exist if grub hasn't been installed */ |
4436 | return 0; |
4437 | |
4438 | if (read(fd, bootSect, 512) != 512) { |
4439 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), |
4440 | executable, strerror(errno)); |
4441 | return 1; |
4442 | } |
4443 | close(fd); |
4444 | |
4445 | return checkDeviceBootloader(boot, bootSect); |
4446 | } |
4447 | |
4448 | int checkForYaboot(struct grubConfig *config) |
4449 | { |
4450 | /* |
4451 | * This is a simplistic check that we consider good enough for own puporses |
4452 | * |
4453 | * If we were to properly check if yaboot is *installed* we'd need to: |
4454 | * 1) get the system boot device (LT_BOOT) |
4455 | * 2) considering it's a raw filesystem, check if the yaboot binary matches |
4456 | * the content on the boot device |
4457 | * 3) if not, copy the binary to a temporary file and run "addnote" on it |
4458 | * 4) check again if binary and boot device contents match |
4459 | */ |
4460 | if (!access("/etc/yaboot.conf", R_OK)) |
4461 | return 2; |
4462 | |
4463 | return 1; |
4464 | } |
4465 | |
4466 | int checkForElilo(struct grubConfig *config) |
4467 | { |
4468 | if (!access("/etc/elilo.conf", R_OK)) |
4469 | return 2; |
4470 | |
4471 | return 1; |
4472 | } |
4473 | |
4474 | static size_t getRootSpecifier(const char *str) |
4475 | { |
4476 | size_t rs = 0; |
4477 | |
4478 | if (*str == '(') { |
4479 | for (; str[rs] != ')' && !isspace(str[rs]); rs++) { |
4480 | if (!str[rs]) |
4481 | return rs; |
4482 | } |
4483 | rs++; |
4484 | } |
4485 | |
4486 | return rs + subvolPrefix(str + rs); |
4487 | } |
4488 | |
4489 | static char *getInitrdVal(struct grubConfig *config, |
4490 | const char *prefix, struct singleLine *tmplLine, |
4491 | const char *newKernelInitrd, |
4492 | const char **extraInitrds, int extraInitrdCount) |
4493 | { |
4494 | char *initrdVal, *end; |
4495 | int i; |
4496 | size_t totalSize; |
4497 | size_t prefixLen; |
4498 | char separatorChar; |
4499 | |
4500 | prefixLen = strlen(prefix); |
4501 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */ ; |
4502 | |
4503 | for (i = 0; i < extraInitrdCount; i++) { |
4504 | totalSize += sizeof(separatorChar); |
4505 | totalSize += strlen(extraInitrds[i]) - prefixLen; |
4506 | } |
4507 | |
4508 | initrdVal = end = malloc(totalSize); |
4509 | |
4510 | end = stpcpy(end, newKernelInitrd + prefixLen); |
4511 | |
4512 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; |
4513 | for (i = 0; i < extraInitrdCount; i++) { |
4514 | const char *extraInitrd; |
4515 | int j; |
4516 | |
4517 | extraInitrd = extraInitrds[i] + prefixLen; |
4518 | /* Don't add entries that are already there */ |
4519 | if (tmplLine != NULL) { |
4520 | for (j = 2; j < tmplLine->numElements; j++) |
4521 | if (strcmp |
4522 | (extraInitrd, |
4523 | tmplLine->elements[j].item) == 0) |
4524 | break; |
4525 | |
4526 | if (j != tmplLine->numElements) |
4527 | continue; |
4528 | } |
4529 | |
4530 | *end++ = separatorChar; |
4531 | end = stpcpy(end, extraInitrd); |
4532 | } |
4533 | |
4534 | return initrdVal; |
4535 | } |
4536 | |
4537 | int addNewKernel(struct grubConfig *config, struct singleEntry *template, |
4538 | const char *prefix, |
4539 | const char *newKernelPath, const char *newKernelTitle, |
4540 | const char *newKernelArgs, const char *newKernelInitrd, |
4541 | const char **extraInitrds, int extraInitrdCount, |
4542 | const char *newMBKernel, const char *newMBKernelArgs, |
4543 | const char *newDevTreePath, int newIndex) |
4544 | { |
4545 | struct singleEntry *new, *entry, *prev = NULL; |
4546 | struct singleLine *newLine = NULL, *tmplLine = NULL, *masterLine = NULL; |
4547 | int needs; |
4548 | char *indexs; |
4549 | char *chptr; |
4550 | int rc; |
4551 | |
4552 | if (!newKernelPath) |
4553 | return 0; |
4554 | |
4555 | rc = asprintf(&indexs, "%d", newIndex); |
4556 | if (rc < 0) |
4557 | return 1; |
4558 | |
4559 | /* if the newKernelTitle is too long silently munge it into something |
4560 | * we can live with. truncating is first check, then we'll just mess with |
4561 | * it until it looks better */ |
4562 | if (config->cfi->maxTitleLength && |
4563 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { |
4564 | char *buf = alloca(config->cfi->maxTitleLength + 7); |
4565 | char *numBuf = alloca(config->cfi->maxTitleLength + 1); |
4566 | int i = 1; |
4567 | |
4568 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, |
4569 | newKernelTitle); |
4570 | while (findEntryByPath(config, buf, NULL, NULL)) { |
4571 | sprintf(numBuf, "%d", i++); |
4572 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); |
4573 | } |
4574 | |
4575 | newKernelTitle = buf + 6; |
4576 | } |
4577 | |
4578 | new = malloc(sizeof(*new)); |
4579 | new->skip = 0; |
4580 | new->multiboot = 0; |
4581 | new->lines = NULL; |
4582 | entry = config->entries; |
4583 | for (unsigned int i = 0; i < newIndex; i++) { |
4584 | if (!entry) |
4585 | break; |
4586 | prev = entry; |
4587 | entry = entry->next; |
4588 | } |
4589 | new->next = entry; |
4590 | |
4591 | if (prev) |
4592 | prev->next = new; |
4593 | else |
4594 | config->entries = new; |
4595 | |
4596 | /* copy/update from the template */ |
4597 | needs = NEED_KERNEL | NEED_TITLE; |
4598 | if (newKernelInitrd) |
4599 | needs |= NEED_INITRD; |
4600 | if (newMBKernel) { |
4601 | needs |= NEED_MB; |
4602 | new->multiboot = 1; |
4603 | } |
4604 | if (newDevTreePath && getKeywordByType(LT_DEVTREE, config->cfi)) |
4605 | needs |= NEED_DEVTREE; |
4606 | |
4607 | if (template) { |
4608 | for (masterLine = template->lines; |
4609 | masterLine && (tmplLine = lineDup(masterLine)); |
4610 | lineFree(tmplLine), masterLine = masterLine->next) { |
4611 | dbgPrintf("addNewKernel processing %d\n", |
4612 | tmplLine->type); |
4613 | |
4614 | /* skip comments */ |
4615 | chptr = tmplLine->indent; |
4616 | while (*chptr && isspace(*chptr)) |
4617 | chptr++; |
4618 | if (*chptr == '#') |
4619 | continue; |
4620 | |
4621 | if (iskernel(tmplLine->type) |
4622 | && tmplLine->numElements >= 2) { |
4623 | if (!template->multiboot && (needs & NEED_MB)) { |
4624 | /* it's not a multiboot template and |
4625 | * this is the kernel line. Try to |
4626 | * be intelligent about inserting the |
4627 | * hypervisor at the same time. |
4628 | */ |
4629 | if (config->cfi->mbHyperFirst) { |
4630 | /* insert the hypervisor first */ |
4631 | newLine = |
4632 | addLine(new, config->cfi, |
4633 | LT_HYPER, |
4634 | tmplLine->indent, |
4635 | newMBKernel + |
4636 | strlen(prefix)); |
4637 | /* set up for adding the |
4638 | * kernel line */ |
4639 | free(tmplLine->indent); |
4640 | tmplLine->indent = |
4641 | strdup(config-> |
4642 | secondaryIndent); |
4643 | needs &= ~NEED_MB; |
4644 | } |
4645 | if (needs & NEED_KERNEL) { |
4646 | /* use addLineTmpl to |
4647 | * preserve line elements, |
4648 | * otherwise we could just |
4649 | * call addLine. |
4650 | * Unfortunately this means |
4651 | * making some changes to the |
4652 | * template such as the |
4653 | * indent change above and |
4654 | * the type change below. |
4655 | */ |
4656 | struct keywordTypes *mbm_kw = |
4657 | getKeywordByType |
4658 | (LT_MBMODULE, config->cfi); |
4659 | if (mbm_kw) { |
4660 | tmplLine->type = |
4661 | LT_MBMODULE; |
4662 | free(tmplLine-> |
4663 | elements[0].item); |
4664 | tmplLine->elements[0]. |
4665 | item = |
4666 | strdup(mbm_kw->key); |
4667 | } |
4668 | newLine = |
4669 | addLineTmpl(new, tmplLine, |
4670 | newLine, |
4671 | newKernelPath + |
4672 | strlen(prefix), |
4673 | config->cfi); |
4674 | needs &= ~NEED_KERNEL; |
4675 | } |
4676 | if (needs & NEED_MB) { /* !mbHyperFirst */ |
4677 | newLine = |
4678 | addLine(new, config->cfi, |
4679 | LT_HYPER, |
4680 | config-> |
4681 | secondaryIndent, |
4682 | newMBKernel + |
4683 | strlen(prefix)); |
4684 | needs &= ~NEED_MB; |
4685 | } |
4686 | } else if (needs & NEED_KERNEL) { |
4687 | newLine = |
4688 | addLineTmpl(new, tmplLine, newLine, |
4689 | newKernelPath + |
4690 | strlen(prefix), |
4691 | config->cfi); |
4692 | needs &= ~NEED_KERNEL; |
4693 | } |
4694 | |
4695 | } else if (tmplLine->type == LT_HYPER && |
4696 | tmplLine->numElements >= 2) { |
4697 | if (needs & NEED_MB) { |
4698 | newLine = |
4699 | addLineTmpl(new, tmplLine, newLine, |
4700 | newMBKernel + |
4701 | strlen(prefix), |
4702 | config->cfi); |
4703 | needs &= ~NEED_MB; |
4704 | } |
4705 | |
4706 | } else if (tmplLine->type == LT_MBMODULE && |
4707 | tmplLine->numElements >= 2) { |
4708 | if (new->multiboot) { |
4709 | if (needs & NEED_KERNEL) { |
4710 | newLine = |
4711 | addLineTmpl(new, tmplLine, |
4712 | newLine, |
4713 | newKernelPath + |
4714 | strlen(prefix), |
4715 | config->cfi); |
4716 | needs &= ~NEED_KERNEL; |
4717 | } else if (config->cfi->mbInitRdIsModule |
4718 | && (needs & NEED_INITRD)) { |
4719 | char *initrdVal; |
4720 | initrdVal = |
4721 | getInitrdVal(config, prefix, |
4722 | tmplLine, |
4723 | newKernelInitrd, |
4724 | extraInitrds, |
4725 | extraInitrdCount); |
4726 | newLine = |
4727 | addLineTmpl(new, tmplLine, |
4728 | newLine, |
4729 | initrdVal, |
4730 | config->cfi); |
4731 | free(initrdVal); |
4732 | needs &= ~NEED_INITRD; |
4733 | } |
4734 | } else if (needs & NEED_KERNEL) { |
4735 | /* template is multi but new is not, |
4736 | * insert the kernel in the first |
4737 | * module slot |
4738 | */ |
4739 | tmplLine->type = |
4740 | preferredLineType(LT_KERNEL, |
4741 | config->cfi); |
4742 | free(tmplLine->elements[0].item); |
4743 | tmplLine->elements[0].item = |
4744 | strdup(getKeywordByType |
4745 | (tmplLine->type, |
4746 | config->cfi)->key); |
4747 | newLine = |
4748 | addLineTmpl(new, tmplLine, newLine, |
4749 | newKernelPath + |
4750 | strlen(prefix), |
4751 | config->cfi); |
4752 | needs &= ~NEED_KERNEL; |
4753 | } else if (needs & NEED_INITRD) { |
4754 | char *initrdVal; |
4755 | /* template is multi but new is not, |
4756 | * insert the initrd in the second |
4757 | * module slot |
4758 | */ |
4759 | tmplLine->type = |
4760 | preferredLineType(LT_INITRD, |
4761 | config->cfi); |
4762 | free(tmplLine->elements[0].item); |
4763 | tmplLine->elements[0].item = |
4764 | strdup(getKeywordByType |
4765 | (tmplLine->type, |
4766 | config->cfi)->key); |
4767 | initrdVal = |
4768 | getInitrdVal(config, prefix, |
4769 | tmplLine, |
4770 | newKernelInitrd, |
4771 | extraInitrds, |
4772 | extraInitrdCount); |
4773 | newLine = |
4774 | addLineTmpl(new, tmplLine, newLine, |
4775 | initrdVal, config->cfi); |
4776 | free(initrdVal); |
4777 | needs &= ~NEED_INITRD; |
4778 | } |
4779 | |
4780 | } else if (isinitrd(tmplLine->type) |
4781 | && tmplLine->numElements >= 2) { |
4782 | if (needs & NEED_INITRD && new->multiboot |
4783 | && !template->multiboot |
4784 | && config->cfi->mbInitRdIsModule) { |
4785 | /* make sure we don't insert the |
4786 | * module initrd before the module |
4787 | * kernel... if we don't do it here, |
4788 | * it will be inserted following the |
4789 | * template. |
4790 | */ |
4791 | if (!needs & NEED_KERNEL) { |
4792 | char *initrdVal; |
4793 | |
4794 | initrdVal = |
4795 | getInitrdVal(config, prefix, |
4796 | tmplLine, |
4797 | newKernelInitrd, |
4798 | extraInitrds, |
4799 | extraInitrdCount); |
4800 | newLine = |
4801 | addLine(new, config->cfi, |
4802 | LT_MBMODULE, |
4803 | config-> |
4804 | secondaryIndent, |
4805 | initrdVal); |
4806 | free(initrdVal); |
4807 | needs &= ~NEED_INITRD; |
4808 | } |
4809 | } else if (needs & NEED_INITRD) { |
4810 | char *initrdVal; |
4811 | initrdVal = |
4812 | getInitrdVal(config, prefix, |
4813 | tmplLine, |
4814 | newKernelInitrd, |
4815 | extraInitrds, |
4816 | extraInitrdCount); |
4817 | newLine = |
4818 | addLineTmpl(new, tmplLine, newLine, |
4819 | initrdVal, config->cfi); |
4820 | free(initrdVal); |
4821 | needs &= ~NEED_INITRD; |
4822 | } |
4823 | |
4824 | } else if (tmplLine->type == LT_MENUENTRY && |
4825 | (needs & NEED_TITLE)) { |
4826 | requote(tmplLine, config->cfi); |
4827 | char *nkt = malloc(strlen(newKernelTitle) + 3); |
4828 | strcpy(nkt, "'"); |
4829 | strcat(nkt, newKernelTitle); |
4830 | strcat(nkt, "'"); |
4831 | newLine = |
4832 | addLineTmpl(new, tmplLine, newLine, nkt, |
4833 | config->cfi); |
4834 | free(nkt); |
4835 | needs &= ~NEED_TITLE; |
4836 | } else if (tmplLine->type == LT_TITLE && |
4837 | (needs & NEED_TITLE)) { |
4838 | if (tmplLine->numElements >= 2) { |
4839 | newLine = |
4840 | addLineTmpl(new, tmplLine, newLine, |
4841 | newKernelTitle, |
4842 | config->cfi); |
4843 | needs &= ~NEED_TITLE; |
4844 | } else if (tmplLine->numElements == 1 && |
4845 | config->cfi->titleBracketed) { |
4846 | /* addLineTmpl doesn't handle |
4847 | * titleBracketed */ |
4848 | newLine = |
4849 | addLine(new, config->cfi, LT_TITLE, |
4850 | tmplLine->indent, |
4851 | newKernelTitle); |
4852 | needs &= ~NEED_TITLE; |
4853 | } |
4854 | } else if (tmplLine->type == LT_ECHO) { |
4855 | requote(tmplLine, config->cfi); |
4856 | static const char *prefix = "'Loading "; |
4857 | if (tmplLine->numElements > 1 && |
4858 | strstr(tmplLine->elements[1].item, prefix) |
4859 | && masterLine->next |
4860 | && iskernel(masterLine->next->type)) { |
4861 | char *newTitle = |
4862 | malloc(strlen(prefix) + |
4863 | strlen(newKernelTitle) + 2); |
4864 | |
4865 | strcpy(newTitle, prefix); |
4866 | strcat(newTitle, newKernelTitle); |
4867 | strcat(newTitle, "'"); |
4868 | newLine = |
4869 | addLine(new, config->cfi, LT_ECHO, |
4870 | tmplLine->indent, newTitle); |
4871 | free(newTitle); |
4872 | } else { |
4873 | /* pass through other lines from the |
4874 | * template */ |
4875 | newLine = |
4876 | addLineTmpl(new, tmplLine, newLine, |
4877 | NULL, config->cfi); |
4878 | } |
4879 | } else if (tmplLine->type == LT_DEVTREE && |
4880 | tmplLine->numElements == 2 |
4881 | && newDevTreePath) { |
4882 | newLine = |
4883 | addLineTmpl(new, tmplLine, newLine, |
4884 | newDevTreePath + strlen(prefix), |
4885 | config->cfi); |
4886 | needs &= ~NEED_DEVTREE; |
4887 | } else if (tmplLine->type == LT_ENTRY_END |
4888 | && needs & NEED_DEVTREE) { |
4889 | const char *ndtp = newDevTreePath; |
4890 | if (!strncmp |
4891 | (newDevTreePath, prefix, strlen(prefix))) |
4892 | ndtp += strlen(prefix); |
4893 | newLine = addLine(new, config->cfi, LT_DEVTREE, |
4894 | config->secondaryIndent, |
4895 | ndtp); |
4896 | needs &= ~NEED_DEVTREE; |
4897 | newLine = |
4898 | addLineTmpl(new, tmplLine, newLine, NULL, |
4899 | config->cfi); |
4900 | } else { |
4901 | /* pass through other lines from the template */ |
4902 | newLine = |
4903 | addLineTmpl(new, tmplLine, newLine, NULL, |
4904 | config->cfi); |
4905 | } |
4906 | } |
4907 | |
4908 | } else { |
4909 | /* don't have a template, so start the entry with the |
4910 | * appropriate starting line |
4911 | */ |
4912 | switch (config->cfi->entryStart) { |
4913 | case LT_KERNEL: |
4914 | case LT_KERNEL_EFI: |
4915 | case LT_KERNEL_16: |
4916 | if (new->multiboot && config->cfi->mbHyperFirst) { |
4917 | /* fall through to LT_HYPER */ |
4918 | } else { |
4919 | newLine = addLine(new, config->cfi, |
4920 | preferredLineType(LT_KERNEL, |
4921 | config-> |
4922 | cfi), |
4923 | config->primaryIndent, |
4924 | newKernelPath + |
4925 | strlen(prefix)); |
4926 | needs &= ~NEED_KERNEL; |
4927 | break; |
4928 | } |
4929 | |
4930 | case LT_HYPER: |
4931 | newLine = addLine(new, config->cfi, LT_HYPER, |
4932 | config->primaryIndent, |
4933 | newMBKernel + strlen(prefix)); |
4934 | needs &= ~NEED_MB; |
4935 | break; |
4936 | |
4937 | case LT_MENUENTRY:{ |
4938 | char *nkt = malloc(strlen(newKernelTitle) + 3); |
4939 | strcpy(nkt, "'"); |
4940 | strcat(nkt, newKernelTitle); |
4941 | strcat(nkt, "'"); |
4942 | newLine = |
4943 | addLine(new, config->cfi, LT_MENUENTRY, |
4944 | config->primaryIndent, nkt); |
4945 | free(nkt); |
4946 | needs &= ~NEED_TITLE; |
4947 | needs |= NEED_END; |
4948 | break; |
4949 | } |
4950 | case LT_TITLE: |
4951 | if (useextlinuxmenu != 0) { // We just need useextlinuxmenu to not be zero (set above) |
4952 | char *templabel; |
4953 | int x = 0, y = 0; |
4954 | |
4955 | templabel = strdup(newKernelTitle); |
4956 | while (templabel[x]) { |
4957 | if (templabel[x] == ' ') { |
4958 | y = x; |
4959 | while (templabel[y]) { |
4960 | templabel[y] = |
4961 | templabel[y + 1]; |
4962 | y++; |
4963 | } |
4964 | } |
4965 | x++; |
4966 | } |
4967 | newLine = addLine(new, config->cfi, LT_TITLE, |
4968 | config->primaryIndent, |
4969 | templabel); |
4970 | free(templabel); |
4971 | } else { |
4972 | newLine = addLine(new, config->cfi, LT_TITLE, |
4973 | config->primaryIndent, |
4974 | newKernelTitle); |
4975 | } |
4976 | needs &= ~NEED_TITLE; |
4977 | break; |
4978 | |
4979 | default: |
4980 | abort(); |
4981 | } |
4982 | } |
4983 | |
4984 | struct singleLine *endLine = NULL; |
4985 | endLine = getLineByType(LT_ENTRY_END, new->lines); |
4986 | if (endLine) { |
4987 | removeLine(new, endLine); |
4988 | needs |= NEED_END; |
4989 | } |
4990 | |
4991 | /* add the remainder of the lines, i.e. those that either |
4992 | * weren't present in the template, or in the case of no template, |
4993 | * all the lines following the entryStart. |
4994 | */ |
4995 | if (needs & NEED_TITLE) { |
4996 | newLine = addLine(new, config->cfi, LT_TITLE, |
4997 | config->secondaryIndent, newKernelTitle); |
4998 | needs &= ~NEED_TITLE; |
4999 | } |
5000 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
5001 | newLine = addLine(new, config->cfi, LT_HYPER, |
5002 | config->secondaryIndent, |
5003 | newMBKernel + strlen(prefix)); |
5004 | needs &= ~NEED_MB; |
5005 | } |
5006 | if (needs & NEED_KERNEL) { |
5007 | newLine = addLine(new, config->cfi, |
5008 | (new->multiboot |
5009 | && getKeywordByType(LT_MBMODULE, |
5010 | config->cfi)) |
5011 | ? LT_MBMODULE : preferredLineType(LT_KERNEL, |
5012 | config-> |
5013 | cfi), |
5014 | config->secondaryIndent, |
5015 | newKernelPath + strlen(prefix)); |
5016 | needs &= ~NEED_KERNEL; |
5017 | } |
5018 | if (needs & NEED_MB) { |
5019 | newLine = addLine(new, config->cfi, LT_HYPER, |
5020 | config->secondaryIndent, |
5021 | newMBKernel + strlen(prefix)); |
5022 | needs &= ~NEED_MB; |
5023 | } |
5024 | if (needs & NEED_INITRD) { |
5025 | char *initrdVal; |
5026 | initrdVal = |
5027 | getInitrdVal(config, prefix, NULL, newKernelInitrd, |
5028 | extraInitrds, extraInitrdCount); |
5029 | newLine = |
5030 | addLine(new, config->cfi, |
5031 | (new->multiboot |
5032 | && getKeywordByType(LT_MBMODULE, config->cfi)) |
5033 | ? LT_MBMODULE : preferredLineType(LT_INITRD, |
5034 | config->cfi), |
5035 | config->secondaryIndent, initrdVal); |
5036 | free(initrdVal); |
5037 | needs &= ~NEED_INITRD; |
5038 | } |
5039 | if (needs & NEED_DEVTREE) { |
5040 | newLine = addLine(new, config->cfi, LT_DEVTREE, |
5041 | config->secondaryIndent, newDevTreePath); |
5042 | needs &= ~NEED_DEVTREE; |
5043 | } |
5044 | |
5045 | /* NEEDS_END must be last on bootloaders that need it... */ |
5046 | if (needs & NEED_END) { |
5047 | newLine = addLine(new, config->cfi, LT_ENTRY_END, |
5048 | config->secondaryIndent, NULL); |
5049 | needs &= ~NEED_END; |
5050 | } |
5051 | |
5052 | if (needs) { |
5053 | printf(_("grubby: needs=%d, aborting\n"), needs); |
5054 | abort(); |
5055 | } |
5056 | |
5057 | if (updateImage(config, indexs, prefix, newKernelArgs, NULL, |
5058 | newMBKernelArgs, NULL)) { |
5059 | config->isModified = 1; |
5060 | return 1; |
5061 | } |
5062 | |
5063 | return 0; |
5064 | } |
5065 | |
5066 | int main(int argc, const char **argv) |
5067 | { |
5068 | poptContext optCon; |
5069 | const char *grubConfig = NULL; |
5070 | char *outputFile = NULL; |
5071 | int arg = 0; |
5072 | int flags = 0; |
5073 | int badImageOkay = 0; |
5074 | int configureGrub2 = 0; |
5075 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; |
5076 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; |
5077 | int configureExtLinux = 0; |
5078 | int bootloaderProbe = 0; |
5079 | int extraInitrdCount = 0; |
5080 | char *updateKernelPath = NULL; |
5081 | char *newKernelPath = NULL; |
5082 | char *removeKernelPath = NULL; |
5083 | char *newKernelArgs = NULL; |
5084 | char *newKernelInitrd = NULL; |
5085 | char *newKernelTitle = NULL; |
5086 | char *newDevTreePath = NULL; |
5087 | char *newMBKernel = NULL; |
5088 | char *newMBKernelArgs = NULL; |
5089 | int newIndex = 0; |
5090 | char *removeMBKernelArgs = NULL; |
5091 | char *removeMBKernel = NULL; |
5092 | char *bootPrefix = NULL; |
5093 | char *defaultKernel = NULL; |
5094 | char *removeArgs = NULL; |
5095 | char *kernelInfo = NULL; |
5096 | char *extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
5097 | char *envPath = NULL; |
5098 | const char *chptr = NULL; |
5099 | struct configFileInfo *cfi = NULL; |
5100 | struct grubConfig *config; |
5101 | struct singleEntry *template = NULL; |
5102 | int copyDefault = 0, makeDefault = 0; |
5103 | int displayDefault = 0; |
5104 | int displayDefaultIndex = 0; |
5105 | int displayDefaultTitle = 0; |
5106 | int defaultIndex = -1; |
5107 | struct poptOption options[] = { |
5108 | {"add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, |
5109 | _("add an entry for the specified kernel"), _("kernel-path")}, |
5110 | {"add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, |
5111 | _("add an entry for the specified multiboot kernel"), NULL}, |
5112 | {"args", 0, POPT_ARG_STRING, &newKernelArgs, 0, |
5113 | _("default arguments for the new kernel or new arguments for " |
5114 | "kernel being updated"), _("args")}, |
5115 | {"mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, |
5116 | _("default arguments for the new multiboot kernel or " |
5117 | "new arguments for multiboot kernel being updated"), NULL}, |
5118 | {"mounts", 0, POPT_ARG_STRING, &mounts, 0, |
5119 | _("path to fake /proc/mounts file (for testing only)"), |
5120 | _("mounts")}, |
5121 | {"bad-image-okay", 0, 0, &badImageOkay, 0, |
5122 | _ |
5123 | ("don't sanity check images in boot entries (for testing only)"), |
5124 | NULL}, |
5125 | {"boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, |
5126 | _ |
5127 | ("filesystem which contains /boot directory (for testing only)"), |
5128 | _("bootfs")}, |
5129 | #if defined(__i386__) || defined(__x86_64__) || defined (__powerpc64__) || defined (__ia64__) |
5130 | {"bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, |
5131 | _("check which bootloader is installed on boot sector")}, |
5132 | #endif |
5133 | {"config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, |
5134 | _("path to grub config file to update (\"-\" for stdin)"), |
5135 | _("path")}, |
5136 | {"copy-default", 0, 0, ©Default, 0, |
5137 | _("use the default boot entry as a template for the new entry " |
5138 | "being added; if the default is not a linux image, or if " |
5139 | "the kernel referenced by the default image does not exist, " |
5140 | "the first linux entry whose kernel does exist is used as the " |
5141 | "template"), NULL}, |
5142 | {"debug", 0, 0, &debug, 0, |
5143 | _("print debugging information for failures")}, |
5144 | {"default-kernel", 0, 0, &displayDefault, 0, |
5145 | _("display the path of the default kernel")}, |
5146 | {"default-index", 0, 0, &displayDefaultIndex, 0, |
5147 | _("display the index of the default kernel")}, |
5148 | {"default-title", 0, 0, &displayDefaultTitle, 0, |
5149 | _("display the title of the default kernel")}, |
5150 | {"devtree", 0, POPT_ARG_STRING, &newDevTreePath, 0, |
5151 | _("device tree file for new stanza"), _("dtb-path")}, |
5152 | {"devtreedir", 0, POPT_ARG_STRING, &newDevTreePath, 0, |
5153 | _("device tree directory for new stanza"), _("dtb-path")}, |
5154 | {"elilo", 0, POPT_ARG_NONE, &configureELilo, 0, |
5155 | _("configure elilo bootloader")}, |
5156 | {"efi", 0, POPT_ARG_NONE, &isEfi, 0, |
5157 | _("force grub2 stanzas to use efi")}, |
5158 | {"env", 0, POPT_ARG_STRING, &envPath, 0, |
5159 | _("path for environment data"), |
5160 | _("path")}, |
5161 | {"extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
5162 | _("configure extlinux bootloader (from syslinux)")}, |
5163 | {"grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
5164 | _("configure grub bootloader")}, |
5165 | {"grub2", 0, POPT_ARG_NONE, &configureGrub2, 0, |
5166 | _("configure grub2 bootloader")}, |
5167 | {"info", 0, POPT_ARG_STRING, &kernelInfo, 0, |
5168 | _("display boot information for specified kernel"), |
5169 | _("kernel-path")}, |
5170 | {"initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, |
5171 | _("initrd image for the new kernel"), _("initrd-path")}, |
5172 | {"extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
5173 | _ |
5174 | ("auxiliary initrd image for things other than the new kernel"), |
5175 | _("initrd-path")}, |
5176 | {"lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
5177 | _("configure lilo bootloader")}, |
5178 | {"make-default", 0, 0, &makeDefault, 0, |
5179 | _("make the newly added entry the default boot entry"), NULL}, |
5180 | {"output-file", 'o', POPT_ARG_STRING, &outputFile, 0, |
5181 | _("path to output updated config file (\"-\" for stdout)"), |
5182 | _("path")}, |
5183 | {"remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, |
5184 | _("remove kernel arguments"), NULL}, |
5185 | {"remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, |
5186 | _("remove multiboot kernel arguments"), NULL}, |
5187 | {"remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, |
5188 | _("remove all entries for the specified kernel"), |
5189 | _("kernel-path")}, |
5190 | {"remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, |
5191 | _("remove all entries for the specified multiboot kernel"), |
5192 | NULL}, |
5193 | {"set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, |
5194 | _("make the first entry referencing the specified kernel " |
5195 | "the default"), _("kernel-path")}, |
5196 | {"set-default-index", 0, POPT_ARG_INT, &defaultIndex, 0, |
5197 | _("make the given entry index the default entry"), |
5198 | _("entry-index")}, |
5199 | {"set-index", 0, POPT_ARG_INT, &newIndex, 0, |
5200 | _("use the given index when creating a new entry"), |
5201 | _("entry-index")}, |
5202 | {"silo", 0, POPT_ARG_NONE, &configureSilo, 0, |
5203 | _("configure silo bootloader")}, |
5204 | {"title", 0, POPT_ARG_STRING, &newKernelTitle, 0, |
5205 | _("title to use for the new kernel entry"), _("entry-title")}, |
5206 | {"update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, |
5207 | _("updated information for the specified kernel"), |
5208 | _("kernel-path")}, |
5209 | {"version", 'v', 0, NULL, 'v', |
5210 | _("print the version of this program and exit"), NULL}, |
5211 | {"yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, |
5212 | _("configure yaboot bootloader")}, |
5213 | {"zipl", 0, POPT_ARG_NONE, &configureZipl, 0, |
5214 | _("configure zipl bootloader")}, |
5215 | POPT_AUTOHELP {0, 0, 0, 0, 0} |
5216 | }; |
5217 | |
5218 | useextlinuxmenu = 0; |
5219 | |
5220 | int i = 0; |
5221 | for (int j = 1; j < argc; j++) |
5222 | i += strlen(argv[j]) + 1; |
5223 | saved_command_line = malloc(i); |
5224 | if (!saved_command_line) { |
5225 | fprintf(stderr, "grubby: %m\n"); |
5226 | exit(1); |
5227 | } |
5228 | saved_command_line[0] = '\0'; |
5229 | int cmdline_len = 0, arg_len; |
5230 | for (int j = 1; j < argc; j++) { |
5231 | arg_len = strlen(argv[j]); |
5232 | memcpy(saved_command_line + cmdline_len, argv[j], arg_len); |
5233 | cmdline_len += arg_len; |
5234 | if (j != argc - 1) { |
5235 | memcpy(saved_command_line + cmdline_len, " ", 1); |
5236 | cmdline_len++; |
5237 | } |
5238 | |
5239 | } |
5240 | saved_command_line[cmdline_len] = '\0'; |
5241 | |
5242 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
5243 | poptReadDefaultConfig(optCon, 1); |
5244 | |
5245 | while ((arg = poptGetNextOpt(optCon)) >= 0) { |
5246 | switch (arg) { |
5247 | case 'v': |
5248 | printf("grubby version %s\n", VERSION); |
5249 | exit(0); |
5250 | break; |
5251 | case 'i': |
5252 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { |
5253 | extraInitrds[extraInitrdCount++] = |
5254 | strdup(poptGetOptArg(optCon)); |
5255 | } else { |
5256 | fprintf(stderr, |
5257 | _ |
5258 | ("grubby: extra initrd maximum is %d\n"), |
5259 | extraInitrdCount); |
5260 | return 1; |
5261 | } |
5262 | break; |
5263 | } |
5264 | } |
5265 | |
5266 | if (arg < -1) { |
5267 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), |
5268 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), |
5269 | poptStrerror(arg)); |
5270 | return 1; |
5271 | } |
5272 | |
5273 | if ((chptr = poptGetArg(optCon))) { |
5274 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); |
5275 | return 1; |
5276 | } |
5277 | |
5278 | if ((configureLilo + configureGrub2 + configureGrub + configureELilo + |
5279 | configureYaboot + configureSilo + configureZipl + |
5280 | configureExtLinux) > 1) { |
5281 | fprintf(stderr, |
5282 | _("grubby: cannot specify multiple bootloaders\n")); |
5283 | return 1; |
5284 | } else if (bootloaderProbe && grubConfig) { |
5285 | fprintf(stderr, |
5286 | _ |
5287 | ("grubby: cannot specify config file with --bootloader-probe\n")); |
5288 | return 1; |
5289 | } else if (configureGrub2) { |
5290 | cfi = &grub2ConfigType; |
5291 | if (envPath) |
5292 | cfi->envFile = envPath; |
5293 | } else if (configureLilo) { |
5294 | cfi = &liloConfigType; |
5295 | } else if (configureGrub) { |
5296 | cfi = &grubConfigType; |
5297 | } else if (configureELilo) { |
5298 | cfi = &eliloConfigType; |
5299 | } else if (configureYaboot) { |
5300 | cfi = &yabootConfigType; |
5301 | } else if (configureSilo) { |
5302 | cfi = &siloConfigType; |
5303 | } else if (configureZipl) { |
5304 | cfi = &ziplConfigType; |
5305 | } else if (configureExtLinux) { |
5306 | cfi = &extlinuxConfigType; |
5307 | useextlinuxmenu = 1; |
5308 | } |
5309 | |
5310 | if (!cfi) { |
5311 | if (grub2FindConfig(&grub2ConfigType)) { |
5312 | cfi = &grub2ConfigType; |
5313 | configureGrub2 = 1; |
5314 | if (envPath) |
5315 | cfi->envFile = envPath; |
5316 | } else { |
5317 | #ifdef __ia64__ |
5318 | cfi = &eliloConfigType; |
5319 | configureLilo = 1; |
5320 | #elif defined(__powerpc__) |
5321 | cfi = &yabootConfigType; |
5322 | configureYaboot = 1; |
5323 | #elif defined(__sparc__) |
5324 | cfi = &siloConfigType; |
5325 | configureSilo = 1; |
5326 | #elif defined(__s390__) || defined(__s390x__) |
5327 | cfi = &ziplConfigType; |
5328 | configureZipl = 1; |
5329 | #else |
5330 | cfi = &grubConfigType; |
5331 | configureGrub = 1; |
5332 | #endif |
5333 | } |
5334 | } |
5335 | |
5336 | if (!grubConfig) { |
5337 | if (cfi->findConfig) |
5338 | grubConfig = cfi->findConfig(cfi); |
5339 | if (!grubConfig) |
5340 | grubConfig = cfi->defaultConfig; |
5341 | } |
5342 | |
5343 | if (bootloaderProbe && (displayDefault || kernelInfo || |
5344 | newKernelPath || removeKernelPath || makeDefault |
5345 | || defaultKernel || displayDefaultIndex |
5346 | || displayDefaultTitle |
5347 | || (defaultIndex >= 0))) { |
5348 | fprintf(stderr, |
5349 | _("grubby: --bootloader-probe may not be used with " |
5350 | "specified option")); |
5351 | return 1; |
5352 | } |
5353 | |
5354 | if ((displayDefault || kernelInfo) && (newKernelPath || |
5355 | removeKernelPath)) { |
5356 | fprintf(stderr, _("grubby: --default-kernel and --info may not " |
5357 | "be used when adding or removing kernels\n")); |
5358 | return 1; |
5359 | } |
5360 | |
5361 | if (newKernelPath && !newKernelTitle) { |
5362 | fprintf(stderr, _("grubby: kernel title must be specified\n")); |
5363 | return 1; |
5364 | } else if (!newKernelPath && (copyDefault || |
5365 | (newKernelInitrd && !updateKernelPath) || |
5366 | makeDefault || extraInitrdCount > 0)) { |
5367 | fprintf(stderr, _("grubby: kernel path expected\n")); |
5368 | return 1; |
5369 | } |
5370 | |
5371 | if (newKernelPath && updateKernelPath) { |
5372 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" |
5373 | "not be used together")); |
5374 | return 1; |
5375 | } |
5376 | |
5377 | if (makeDefault && defaultKernel) { |
5378 | fprintf(stderr, _("grubby: --make-default and --default-kernel " |
5379 | "may not be used together\n")); |
5380 | return 1; |
5381 | } else if (defaultKernel && removeKernelPath && |
5382 | !strcmp(defaultKernel, removeKernelPath)) { |
5383 | fprintf(stderr, |
5384 | _("grubby: cannot make removed kernel the default\n")); |
5385 | return 1; |
5386 | } else if (defaultKernel && newKernelPath && |
5387 | !strcmp(defaultKernel, newKernelPath)) { |
5388 | makeDefault = 1; |
5389 | defaultKernel = NULL; |
5390 | } else if (defaultKernel && (defaultIndex >= 0)) { |
5391 | fprintf(stderr, |
5392 | _("grubby: --set-default and --set-default-index " |
5393 | "may not be used together\n")); |
5394 | return 1; |
5395 | } |
5396 | |
5397 | if (grubConfig && !strcmp(grubConfig, "-") && !outputFile) { |
5398 | fprintf(stderr, |
5399 | _("grubby: output file must be specified if stdin " |
5400 | "is used\n")); |
5401 | return 1; |
5402 | } |
5403 | |
5404 | if (!removeKernelPath && !newKernelPath && !displayDefault |
5405 | && !defaultKernel && !kernelInfo && !bootloaderProbe |
5406 | && !updateKernelPath && !removeMBKernel && !displayDefaultIndex |
5407 | && !displayDefaultTitle && (defaultIndex == -1)) { |
5408 | fprintf(stderr, _("grubby: no action specified\n")); |
5409 | return 1; |
5410 | } |
5411 | |
5412 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; |
5413 | |
5414 | if (cfi->needsBootPrefix) { |
5415 | if (!bootPrefix) { |
5416 | bootPrefix = findBootPrefix(); |
5417 | if (!bootPrefix) |
5418 | return 1; |
5419 | } else { |
5420 | /* this shouldn't end with a / */ |
5421 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') |
5422 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; |
5423 | } |
5424 | } else { |
5425 | bootPrefix = ""; |
5426 | } |
5427 | |
5428 | if (!cfi->mbAllowExtraInitRds && extraInitrdCount > 0) { |
5429 | fprintf(stderr, |
5430 | _("grubby: %s doesn't allow multiple initrds\n"), |
5431 | cfi->defaultConfig); |
5432 | return 1; |
5433 | } |
5434 | |
5435 | if (bootloaderProbe) { |
5436 | int lrc = 0, grc = 0, gr2c = 0, extrc = 0, yrc = 0, erc = 0; |
5437 | struct grubConfig *lconfig, *gconfig, *yconfig, *econfig; |
5438 | |
5439 | const char *grub2config = grub2FindConfig(&grub2ConfigType); |
5440 | if (grub2config) { |
5441 | gconfig = readConfig(grub2config, &grub2ConfigType); |
5442 | if (!gconfig) |
5443 | gr2c = 1; |
5444 | else |
5445 | gr2c = checkForGrub2(gconfig); |
5446 | } |
5447 | |
5448 | const char *grubconfig = grubFindConfig(&grubConfigType); |
5449 | if (!access(grubconfig, F_OK)) { |
5450 | gconfig = readConfig(grubconfig, &grubConfigType); |
5451 | if (!gconfig) |
5452 | grc = 1; |
5453 | else |
5454 | grc = checkForGrub(gconfig); |
5455 | } |
5456 | |
5457 | if (!access(liloConfigType.defaultConfig, F_OK)) { |
5458 | lconfig = |
5459 | readConfig(liloConfigType.defaultConfig, |
5460 | &liloConfigType); |
5461 | if (!lconfig) |
5462 | lrc = 1; |
5463 | else |
5464 | lrc = checkForLilo(lconfig); |
5465 | } |
5466 | |
5467 | if (!access(eliloConfigType.defaultConfig, F_OK)) { |
5468 | econfig = readConfig(eliloConfigType.defaultConfig, |
5469 | &eliloConfigType); |
5470 | if (!econfig) |
5471 | erc = 1; |
5472 | else |
5473 | erc = checkForElilo(econfig); |
5474 | } |
5475 | |
5476 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
5477 | lconfig = |
5478 | readConfig(extlinuxConfigType.defaultConfig, |
5479 | &extlinuxConfigType); |
5480 | if (!lconfig) |
5481 | extrc = 1; |
5482 | else |
5483 | extrc = checkForExtLinux(lconfig); |
5484 | } |
5485 | |
5486 | if (!access(yabootConfigType.defaultConfig, F_OK)) { |
5487 | yconfig = readConfig(yabootConfigType.defaultConfig, |
5488 | &yabootConfigType); |
5489 | if (!yconfig) |
5490 | yrc = 1; |
5491 | else |
5492 | yrc = checkForYaboot(yconfig); |
5493 | } |
5494 | |
5495 | if (lrc == 1 || grc == 1 || gr2c == 1 || extrc == 1 || yrc == 1 |
5496 | || erc == 1) |
5497 | return 1; |
5498 | |
5499 | if (lrc == 2) |
5500 | printf("lilo\n"); |
5501 | if (gr2c == 2) |
5502 | printf("grub2\n"); |
5503 | if (grc == 2) |
5504 | printf("grub\n"); |
5505 | if (extrc == 2) |
5506 | printf("extlinux\n"); |
5507 | if (yrc == 2) |
5508 | printf("yaboot\n"); |
5509 | if (erc == 2) |
5510 | printf("elilo\n"); |
5511 | |
5512 | return 0; |
5513 | } |
5514 | |
5515 | if (grubConfig == NULL) { |
5516 | printf("Could not find bootloader configuration file.\n"); |
5517 | exit(1); |
5518 | } |
5519 | |
5520 | config = readConfig(grubConfig, cfi); |
5521 | if (!config) |
5522 | return 1; |
5523 | |
5524 | if (displayDefault) { |
5525 | struct singleLine *line; |
5526 | struct singleEntry *entry; |
5527 | size_t rs; |
5528 | |
5529 | if (config->defaultImage == NO_DEFAULT_ENTRY) |
5530 | return 0; |
5531 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
5532 | cfi->defaultIsSaved) |
5533 | config->defaultImage = FIRST_ENTRY_INDEX; |
5534 | entry = findEntryByIndex(config, config->defaultImage); |
5535 | if (!entry) |
5536 | return 0; |
5537 | |
5538 | /* check if is a suitable image but still print it */ |
5539 | suitableImage(entry, bootPrefix, 0, flags); |
5540 | |
5541 | line = |
5542 | getLineByType(LT_KERNEL | LT_HYPER | LT_KERNEL_EFI | |
5543 | LT_KERNEL_16, entry->lines); |
5544 | if (!line) |
5545 | return 0; |
5546 | |
5547 | rs = getRootSpecifier(line->elements[1].item); |
5548 | printf("%s%s\n", bootPrefix, line->elements[1].item + rs); |
5549 | |
5550 | return 0; |
5551 | |
5552 | } else if (displayDefaultTitle) { |
5553 | struct singleLine *line; |
5554 | struct singleEntry *entry; |
5555 | |
5556 | if (config->defaultImage == NO_DEFAULT_ENTRY) |
5557 | return 0; |
5558 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
5559 | cfi->defaultIsSaved) |
5560 | config->defaultImage = FIRST_ENTRY_INDEX; |
5561 | entry = findEntryByIndex(config, config->defaultImage); |
5562 | if (!entry) |
5563 | return 0; |
5564 | |
5565 | if (!configureGrub2) { |
5566 | char *title; |
5567 | line = getLineByType(LT_TITLE, entry->lines); |
5568 | if (!line) |
5569 | return 0; |
5570 | title = extractTitle(config, line); |
5571 | if (!title) |
5572 | return 0; |
5573 | printf("%s\n", title); |
5574 | free(title); |
5575 | } else { |
5576 | char *title; |
5577 | |
5578 | dbgPrintf |
5579 | ("This is GRUB2, default title is embeded in menuentry\n"); |
5580 | line = getLineByType(LT_MENUENTRY, entry->lines); |
5581 | if (!line) |
5582 | return 0; |
5583 | title = grub2ExtractTitle(line); |
5584 | if (title) |
5585 | printf("%s\n", title); |
5586 | } |
5587 | return 0; |
5588 | |
5589 | } else if (displayDefaultIndex) { |
5590 | if (config->defaultImage == NO_DEFAULT_ENTRY) |
5591 | return 0; |
5592 | if (config->defaultImage == DEFAULT_SAVED_GRUB2 && |
5593 | cfi->defaultIsSaved) |
5594 | config->defaultImage = FIRST_ENTRY_INDEX; |
5595 | printf("%i\n", config->defaultImage); |
5596 | return 0; |
5597 | |
5598 | } else if (kernelInfo) |
5599 | return displayInfo(config, kernelInfo, bootPrefix); |
5600 | |
5601 | if (copyDefault) { |
5602 | template = findTemplate(config, bootPrefix, NULL, 0, flags); |
5603 | if (!template) |
5604 | return 1; |
5605 | } |
5606 | |
5607 | markRemovedImage(config, removeKernelPath, bootPrefix); |
5608 | markRemovedImage(config, removeMBKernel, bootPrefix); |
5609 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, |
5610 | makeDefault, bootPrefix, flags, defaultIndex, |
5611 | newIndex); |
5612 | setFallbackImage(config, newKernelPath != NULL); |
5613 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, |
5614 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) |
5615 | return 1; |
5616 | if (updateKernelPath && newKernelInitrd) { |
5617 | if (newMBKernel) { |
5618 | if (addMBInitrd(config, newMBKernel, updateKernelPath, |
5619 | bootPrefix, newKernelInitrd, |
5620 | newKernelTitle)) |
5621 | return 1; |
5622 | } else { |
5623 | if (updateInitrd(config, updateKernelPath, bootPrefix, |
5624 | newKernelInitrd, newKernelTitle)) |
5625 | return 1; |
5626 | } |
5627 | } |
5628 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
5629 | newKernelTitle, newKernelArgs, newKernelInitrd, |
5630 | (const char **)extraInitrds, extraInitrdCount, |
5631 | newMBKernel, newMBKernelArgs, newDevTreePath, |
5632 | newIndex)) |
5633 | return 1; |
5634 | |
5635 | if (numEntries(config) == 0) { |
5636 | fprintf(stderr, |
5637 | _("grubby: doing this would leave no kernel entries. " |
5638 | "Not writing out new config.\n")); |
5639 | return 1; |
5640 | } |
5641 | |
5642 | if (!outputFile) |
5643 | outputFile = (char *)grubConfig; |
5644 | |
5645 | return writeConfig(config, outputFile, bootPrefix); |
5646 | } |