Annotation of /trunk/mkinitrd-magellan/grubby/grubby.c
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Revision 532 -
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Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
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File size: 76002 byte(s)
Sat Sep 1 22:45:15 2007 UTC (17 years ago) by niro
File MIME type: text/plain
File size: 76002 byte(s)
-import if magellan mkinitrd; it is a fork of redhats mkinitrd-5.0.8 with all magellan patches and features; deprecates magellan-src/mkinitrd
1 | niro | 532 | /* Copyright (C) 2001-2005 Red Hat, Inc. |
2 | |||
3 | This program is free software; you can redistribute it and/or | ||
4 | modify it under the terms of the General Public License as published | ||
5 | by the Free Software Foundation; either version 2 of the License, or | ||
6 | (at your option) any later version. | ||
7 | |||
8 | This program is distributed in the hope that it will be useful, | ||
9 | but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
10 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
11 | General Public License for more details. | ||
12 | |||
13 | You should have received a copy of the GNU General Public | ||
14 | License along with this program; if not, write to the Free | ||
15 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | ||
16 | 02111-1307 USA. */ | ||
17 | |||
18 | #include <ctype.h> | ||
19 | #include <errno.h> | ||
20 | #include <fcntl.h> | ||
21 | #include <mntent.h> | ||
22 | #include <popt.h> | ||
23 | #include <stdarg.h> | ||
24 | #include <stdlib.h> | ||
25 | #include <string.h> | ||
26 | #include <sys/stat.h> | ||
27 | #include <unistd.h> | ||
28 | |||
29 | #include "mount_by_label.h" | ||
30 | |||
31 | #define _(A) (A) | ||
32 | |||
33 | #define CODE_SEG_SIZE 128 /* code segment checked by --bootloader-probe */ | ||
34 | |||
35 | /* comments get lumped in with indention */ | ||
36 | struct lineElement { | ||
37 | char * item; | ||
38 | char * indent; | ||
39 | }; | ||
40 | |||
41 | enum lineType_e { LT_WHITESPACE, LT_TITLE, LT_KERNEL, LT_INITRD, LT_DEFAULT, | ||
42 | LT_UNKNOWN, LT_ROOT, LT_FALLBACK, LT_KERNELARGS, LT_BOOT, | ||
43 | LT_BOOTROOT, LT_LBA, LT_MBMODULE, LT_OTHER, LT_GENERIC }; | ||
44 | |||
45 | struct singleLine { | ||
46 | char * indent; | ||
47 | int numElements; | ||
48 | struct lineElement * elements; | ||
49 | struct singleLine * next; | ||
50 | enum lineType_e type; | ||
51 | }; | ||
52 | |||
53 | struct singleEntry { | ||
54 | struct singleLine * lines; | ||
55 | int skip; | ||
56 | int multiboot; | ||
57 | struct singleEntry * next; | ||
58 | }; | ||
59 | |||
60 | #define GRUBBY_BADIMAGE_OKAY (1 << 0) | ||
61 | |||
62 | #define GRUB_CONFIG_NO_DEFAULT (1 << 0) /* don't write out default=0 */ | ||
63 | |||
64 | #define KERNEL_KERNEL (1 << 0) | ||
65 | #define KERNEL_INITRD (1 << 2) | ||
66 | #define KERNEL_TITLE (1 << 3) | ||
67 | #define KERNEL_ARGS (1 << 4) | ||
68 | #define KERNEL_MB (1 << 5) | ||
69 | |||
70 | #define MAIN_DEFAULT (1 << 0) | ||
71 | #define DEFAULT_SAVED -2 | ||
72 | |||
73 | struct keywordTypes { | ||
74 | char * key; | ||
75 | enum lineType_e type; | ||
76 | char nextChar; | ||
77 | } ; | ||
78 | |||
79 | struct configFileInfo { | ||
80 | char * defaultConfig; | ||
81 | struct keywordTypes * keywords; | ||
82 | int defaultIsIndex; | ||
83 | int defaultSupportSaved; | ||
84 | enum lineType_e entrySeparator; | ||
85 | int needsBootPrefix; | ||
86 | int argsInQuotes; | ||
87 | int maxTitleLength; | ||
88 | int titleBracketed; | ||
89 | }; | ||
90 | |||
91 | struct keywordTypes grubKeywords[] = { | ||
92 | { "title", LT_TITLE, ' ' }, | ||
93 | { "root", LT_BOOTROOT, ' ' }, | ||
94 | { "default", LT_DEFAULT, ' ' }, | ||
95 | { "fallback", LT_FALLBACK, ' ' }, | ||
96 | { "kernel", LT_KERNEL, ' ' }, | ||
97 | { "initrd", LT_INITRD, ' ' }, | ||
98 | { "module", LT_MBMODULE, ' ' }, | ||
99 | { NULL, 0, 0 }, | ||
100 | }; | ||
101 | |||
102 | struct configFileInfo grubConfigType = { | ||
103 | "/boot/grub/grub.conf", /* defaultConfig */ | ||
104 | grubKeywords, /* keywords */ | ||
105 | 1, /* defaultIsIndex */ | ||
106 | 1, /* defaultSupportSaved */ | ||
107 | LT_TITLE, /* entrySeparator */ | ||
108 | 1, /* needsBootPrefix */ | ||
109 | 0, /* argsInQuotes */ | ||
110 | 0, /* maxTitleLength */ | ||
111 | 0, /* titleBracketed */ | ||
112 | }; | ||
113 | |||
114 | struct keywordTypes yabootKeywords[] = { | ||
115 | { "label", LT_TITLE, '=' }, | ||
116 | { "root", LT_ROOT, '=' }, | ||
117 | { "default", LT_DEFAULT, '=' }, | ||
118 | { "image", LT_KERNEL, '=' }, | ||
119 | { "bsd", LT_GENERIC, '=' }, | ||
120 | { "macos", LT_GENERIC, '=' }, | ||
121 | { "macosx", LT_GENERIC, '=' }, | ||
122 | { "magicboot", LT_GENERIC, '=' }, | ||
123 | { "darwin", LT_GENERIC, '=' }, | ||
124 | { "timeout", LT_GENERIC, '=' }, | ||
125 | { "install", LT_GENERIC, '=' }, | ||
126 | { "fstype", LT_GENERIC, '=' }, | ||
127 | { "hfstype", LT_GENERIC, '=' }, | ||
128 | { "delay", LT_GENERIC, '=' }, | ||
129 | { "defaultos", LT_GENERIC, '=' }, | ||
130 | { "init-message", LT_GENERIC, '=' }, | ||
131 | { "enablecdboot", LT_GENERIC, ' ' }, | ||
132 | { "enableofboot", LT_GENERIC, ' ' }, | ||
133 | { "enablenetboot", LT_GENERIC, ' ' }, | ||
134 | { "nonvram", LT_GENERIC, ' ' }, | ||
135 | { "hide", LT_GENERIC, ' ' }, | ||
136 | { "protect", LT_GENERIC, ' ' }, | ||
137 | { "nobless", LT_GENERIC, ' ' }, | ||
138 | { "nonvram", LT_GENERIC, ' ' }, | ||
139 | { "brokenosx", LT_GENERIC, ' ' }, | ||
140 | { "usemount", LT_GENERIC, ' ' }, | ||
141 | { "mntpoint", LT_GENERIC, '=' }, | ||
142 | { "partition", LT_GENERIC, '=' }, | ||
143 | { "device", LT_GENERIC, '=' }, | ||
144 | { "fstype", LT_GENERIC, '=' }, | ||
145 | { "initrd", LT_INITRD, '=' }, | ||
146 | { "append", LT_KERNELARGS, '=' }, | ||
147 | { "boot", LT_BOOT, '=' }, | ||
148 | { "lba", LT_LBA, ' ' }, | ||
149 | { NULL, 0, 0 }, | ||
150 | }; | ||
151 | |||
152 | struct keywordTypes liloKeywords[] = { | ||
153 | { "label", LT_TITLE, '=' }, | ||
154 | { "root", LT_ROOT, '=' }, | ||
155 | { "default", LT_DEFAULT, '=' }, | ||
156 | { "image", LT_KERNEL, '=' }, | ||
157 | { "other", LT_OTHER, '=' }, | ||
158 | { "initrd", LT_INITRD, '=' }, | ||
159 | { "append", LT_KERNELARGS, '=' }, | ||
160 | { "boot", LT_BOOT, '=' }, | ||
161 | { "lba", LT_LBA, ' ' }, | ||
162 | { NULL, 0, 0 }, | ||
163 | }; | ||
164 | |||
165 | struct keywordTypes siloKeywords[] = { | ||
166 | { "label", LT_TITLE, '=' }, | ||
167 | { "root", LT_ROOT, '=' }, | ||
168 | { "default", LT_DEFAULT, '=' }, | ||
169 | { "image", LT_KERNEL, '=' }, | ||
170 | { "other", LT_OTHER, '=' }, | ||
171 | { "initrd", LT_INITRD, '=' }, | ||
172 | { "append", LT_KERNELARGS, '=' }, | ||
173 | { "boot", LT_BOOT, '=' }, | ||
174 | { NULL, 0, 0 }, | ||
175 | }; | ||
176 | |||
177 | struct keywordTypes ziplKeywords[] = { | ||
178 | { "target", LT_BOOTROOT, '=' }, | ||
179 | { "image", LT_KERNEL, '=' }, | ||
180 | { "ramdisk", LT_INITRD, '=' }, | ||
181 | { "parameters", LT_KERNELARGS, '=' }, | ||
182 | { "default", LT_DEFAULT, '=' }, | ||
183 | { NULL, 0, 0 }, | ||
184 | }; | ||
185 | |||
186 | struct configFileInfo eliloConfigType = { | ||
187 | "/boot/efi/EFI/redhat/elilo.conf", /* defaultConfig */ | ||
188 | liloKeywords, /* keywords */ | ||
189 | 0, /* defaultIsIndex */ | ||
190 | 0, /* defaultSupportSaved */ | ||
191 | LT_KERNEL, /* entrySeparator */ | ||
192 | 1, /* needsBootPrefix */ | ||
193 | 1, /* argsInQuotes */ | ||
194 | 0, /* maxTitleLength */ | ||
195 | 0, /* titleBracketed */ | ||
196 | }; | ||
197 | |||
198 | struct configFileInfo liloConfigType = { | ||
199 | "/etc/lilo.conf", /* defaultConfig */ | ||
200 | liloKeywords, /* keywords */ | ||
201 | 0, /* defaultIsIndex */ | ||
202 | 0, /* defaultSupportSaved */ | ||
203 | LT_KERNEL, /* entrySeparator */ | ||
204 | 0, /* needsBootPrefix */ | ||
205 | 1, /* argsInQuotes */ | ||
206 | 15, /* maxTitleLength */ | ||
207 | 0, /* titleBracketed */ | ||
208 | }; | ||
209 | |||
210 | struct configFileInfo yabootConfigType = { | ||
211 | "/etc/yaboot.conf", /* defaultConfig */ | ||
212 | yabootKeywords, /* keywords */ | ||
213 | 0, /* defaultIsIndex */ | ||
214 | 0, /* defaultSupportSaved */ | ||
215 | LT_KERNEL, /* entrySeparator */ | ||
216 | 1, /* needsBootPrefix */ | ||
217 | 1, /* argsInQuotes */ | ||
218 | 15, /* maxTitleLength */ | ||
219 | 0, /* titleBracketed */ | ||
220 | }; | ||
221 | |||
222 | struct configFileInfo siloConfigType = { | ||
223 | "/etc/silo.conf", /* defaultConfig */ | ||
224 | siloKeywords, /* keywords */ | ||
225 | 0, /* defaultIsIndex */ | ||
226 | 0, /* defaultSupportSaved */ | ||
227 | LT_KERNEL, /* entrySeparator */ | ||
228 | 1, /* needsBootPrefix */ | ||
229 | 1, /* argsInQuotes */ | ||
230 | 15, /* maxTitleLength */ | ||
231 | 0, /* titleBracketed */ | ||
232 | }; | ||
233 | |||
234 | struct configFileInfo ziplConfigType = { | ||
235 | "/etc/zipl.conf", /* defaultConfig */ | ||
236 | ziplKeywords, /* keywords */ | ||
237 | 0, /* defaultIsIndex */ | ||
238 | 0, /* defaultSupportSaved */ | ||
239 | LT_TITLE, /* entrySeparator */ | ||
240 | 0, /* needsBootPrefix */ | ||
241 | 1, /* argsInQuotes */ | ||
242 | 15, /* maxTitleLength */ | ||
243 | 1, /* titleBracketed */ | ||
244 | }; | ||
245 | |||
246 | struct grubConfig { | ||
247 | struct singleLine * theLines; | ||
248 | struct singleEntry * entries; | ||
249 | char * primaryIndent; | ||
250 | char * secondaryIndent; | ||
251 | int defaultImage; /* -1 if none specified -- this value is | ||
252 | * written out, overriding original */ | ||
253 | int fallbackImage; /* just like defaultImage */ | ||
254 | int flags; | ||
255 | struct configFileInfo * cfi; | ||
256 | }; | ||
257 | |||
258 | |||
259 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); | ||
260 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, | ||
261 | const char * path, const char * prefix, | ||
262 | int * index); | ||
263 | static char * strndup(char * from, int len); | ||
264 | static int readFile(int fd, char ** bufPtr); | ||
265 | static void lineInit(struct singleLine * line); | ||
266 | static void lineFree(struct singleLine * line); | ||
267 | static int lineWrite(FILE * out, struct singleLine * line, | ||
268 | struct configFileInfo * cfi); | ||
269 | static int getNextLine(char ** bufPtr, struct singleLine * line, | ||
270 | struct configFileInfo * cfi); | ||
271 | static char * getRootSpecifier(char * str); | ||
272 | |||
273 | static char * strndup(char * from, int len) { | ||
274 | char * to; | ||
275 | |||
276 | to = malloc(len + 1); | ||
277 | strncpy(to, from, len); | ||
278 | to[len] = '\0'; | ||
279 | |||
280 | return to; | ||
281 | } | ||
282 | |||
283 | static char * sdupprintf(const char *format, ...) | ||
284 | #ifdef __GNUC__ | ||
285 | __attribute__ ((format (printf, 1, 2))); | ||
286 | #else | ||
287 | ; | ||
288 | #endif | ||
289 | |||
290 | static char * sdupprintf(const char *format, ...) { | ||
291 | char *buf = NULL; | ||
292 | char c; | ||
293 | va_list args; | ||
294 | size_t size = 0; | ||
295 | va_start(args, format); | ||
296 | |||
297 | /* XXX requires C99 vsnprintf behavior */ | ||
298 | size = vsnprintf(&c, 1, format, args) + 1; | ||
299 | if (size == -1) { | ||
300 | printf("ERROR: vsnprintf behavior is not C99\n"); | ||
301 | abort(); | ||
302 | } | ||
303 | |||
304 | va_end(args); | ||
305 | va_start(args, format); | ||
306 | |||
307 | buf = malloc(size); | ||
308 | if (buf == NULL) | ||
309 | return NULL; | ||
310 | vsnprintf(buf, size, format, args); | ||
311 | va_end (args); | ||
312 | |||
313 | return buf; | ||
314 | } | ||
315 | |||
316 | static int isBracketedTitle(struct singleLine * line) { | ||
317 | if ((*line->elements[0].item == '[') && (line->numElements == 1)) { | ||
318 | int len = strlen(line->elements[0].item); | ||
319 | if (*(line->elements[0].item + len - 1) == ']') { | ||
320 | /* FIXME: this is a hack... */ | ||
321 | if (strcmp(line->elements[0].item, "[defaultboot]")) { | ||
322 | return 1; | ||
323 | } | ||
324 | } | ||
325 | } | ||
326 | return 0; | ||
327 | } | ||
328 | |||
329 | /* figure out if this is a entry separator */ | ||
330 | static int isEntrySeparator(struct singleLine * line, | ||
331 | struct configFileInfo * cfi) { | ||
332 | if (line->type == LT_WHITESPACE) | ||
333 | return 0; | ||
334 | if (line->type == cfi->entrySeparator) | ||
335 | return 1; | ||
336 | if (line->type == LT_OTHER) | ||
337 | return 1; | ||
338 | if (cfi->titleBracketed && isBracketedTitle(line)) { | ||
339 | return 1; | ||
340 | } | ||
341 | return 0; | ||
342 | } | ||
343 | |||
344 | /* extract the title from within brackets (for zipl) */ | ||
345 | static char * extractTitle(struct singleLine * line) { | ||
346 | /* bracketed title... let's extract it (leaks a byte) */ | ||
347 | char * title; | ||
348 | title = strdup(line->elements[0].item); | ||
349 | title++; | ||
350 | *(title + strlen(title) - 1) = '\0'; | ||
351 | return title; | ||
352 | } | ||
353 | |||
354 | static int readFile(int fd, char ** bufPtr) { | ||
355 | int alloced = 0, size = 0, i = 0; | ||
356 | char * buf = NULL; | ||
357 | |||
358 | do { | ||
359 | size += i; | ||
360 | if ((size + 1024) > alloced) { | ||
361 | alloced += 4096; | ||
362 | buf = realloc(buf, alloced + 1); | ||
363 | } | ||
364 | } while ((i = read(fd, buf + size, 1024)) > 0); | ||
365 | |||
366 | if (i < 0) { | ||
367 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); | ||
368 | free(buf); | ||
369 | return 1; | ||
370 | } | ||
371 | |||
372 | buf = realloc(buf, size + 2); | ||
373 | if (size == 0) | ||
374 | buf[size++] = '\n'; | ||
375 | else | ||
376 | if (buf[size - 1] != '\n') | ||
377 | buf[size++] = '\n'; | ||
378 | buf[size] = '\0'; | ||
379 | |||
380 | *bufPtr = buf; | ||
381 | |||
382 | return 0; | ||
383 | } | ||
384 | |||
385 | static void lineInit(struct singleLine * line) { | ||
386 | line->indent = NULL; | ||
387 | line->elements = NULL; | ||
388 | line->numElements = 0; | ||
389 | line->next = NULL; | ||
390 | } | ||
391 | |||
392 | static void lineFree(struct singleLine * line) { | ||
393 | int i; | ||
394 | |||
395 | if (line->indent) free(line->indent); | ||
396 | |||
397 | for (i = 0; i < line->numElements; i++) { | ||
398 | free(line->elements[i].item); | ||
399 | free(line->elements[i].indent); | ||
400 | } | ||
401 | |||
402 | if (line->elements) free(line->elements); | ||
403 | lineInit(line); | ||
404 | } | ||
405 | |||
406 | static int lineWrite(FILE * out, struct singleLine * line, | ||
407 | struct configFileInfo * cfi) { | ||
408 | int i; | ||
409 | |||
410 | if (fprintf(out, "%s", line->indent) == -1) return -1; | ||
411 | |||
412 | for (i = 0; i < line->numElements; i++) { | ||
413 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) | ||
414 | if (fputc('"', out) == EOF) return -1; | ||
415 | |||
416 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; | ||
417 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; | ||
418 | } | ||
419 | |||
420 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) | ||
421 | if (fputc('"', out) == EOF) return -1; | ||
422 | |||
423 | if (fprintf(out, "\n") == -1) return -1; | ||
424 | |||
425 | return 0; | ||
426 | } | ||
427 | |||
428 | /* we've guaranteed that the buffer ends w/ \n\0 */ | ||
429 | static int getNextLine(char ** bufPtr, struct singleLine * line, | ||
430 | struct configFileInfo * cfi) { | ||
431 | char * end; | ||
432 | char * start = *bufPtr; | ||
433 | char * chptr; | ||
434 | int elementsAlloced = 0; | ||
435 | struct lineElement * element; | ||
436 | struct keywordTypes * keywords = cfi->keywords; | ||
437 | int first = 1; | ||
438 | int i; | ||
439 | |||
440 | lineFree(line); | ||
441 | |||
442 | end = strchr(start, '\n'); | ||
443 | *end = '\0'; | ||
444 | *bufPtr = end + 1; | ||
445 | |||
446 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; | ||
447 | |||
448 | line->indent = strndup(start, chptr - start); | ||
449 | start = chptr; | ||
450 | |||
451 | while (start < end) { | ||
452 | /* we know !isspace(*start) */ | ||
453 | |||
454 | if (elementsAlloced == line->numElements) { | ||
455 | elementsAlloced += 5; | ||
456 | line->elements = realloc(line->elements, | ||
457 | sizeof(*line->elements) * elementsAlloced); | ||
458 | } | ||
459 | |||
460 | element = line->elements + line->numElements; | ||
461 | |||
462 | chptr = start; | ||
463 | while (*chptr && !isspace(*chptr)) { | ||
464 | if (first && *chptr == '=') break; | ||
465 | chptr++; | ||
466 | } | ||
467 | element->item = strndup(start, chptr - start); | ||
468 | start = chptr; | ||
469 | |||
470 | /* lilo actually accepts the pathological case of append = " foo " */ | ||
471 | if (*start == '=') | ||
472 | chptr = start + 1; | ||
473 | else | ||
474 | chptr = start; | ||
475 | |||
476 | do { | ||
477 | for (; *chptr && isspace(*chptr); chptr++); | ||
478 | if (*chptr == '=') | ||
479 | chptr = chptr + 1; | ||
480 | } while (isspace(*chptr)); | ||
481 | |||
482 | element->indent = strndup(start, chptr - start); | ||
483 | start = chptr; | ||
484 | |||
485 | line->numElements++; | ||
486 | first = 0; | ||
487 | } | ||
488 | |||
489 | if (!line->numElements) | ||
490 | line->type = LT_WHITESPACE; | ||
491 | else { | ||
492 | for (i = 0; keywords[i].key; i++) | ||
493 | if (!strcmp(line->elements[0].item, keywords[i].key)) break; | ||
494 | |||
495 | if (keywords[i].key) { | ||
496 | line->type = keywords[i].type; | ||
497 | } else { | ||
498 | line->type = LT_UNKNOWN; | ||
499 | |||
500 | /* zipl does [title] instead of something reasonable like all | ||
501 | * the other boot loaders. kind of ugly */ | ||
502 | if (cfi->titleBracketed && isBracketedTitle(line)) { | ||
503 | line->type = LT_TITLE; | ||
504 | } | ||
505 | |||
506 | /* this is awkward, but we need to be able to handle keywords | ||
507 | that begin with a # (specifically for #boot in grub.conf), | ||
508 | but still make comments lines with no elements (everything | ||
509 | stored in the indent */ | ||
510 | if (*line->elements[0].item == '#') { | ||
511 | char * fullLine; | ||
512 | int len; | ||
513 | int i; | ||
514 | |||
515 | len = strlen(line->indent); | ||
516 | for (i = 0; i < line->numElements; i++) | ||
517 | len += strlen(line->elements[i].item) + | ||
518 | strlen(line->elements[i].indent); | ||
519 | |||
520 | fullLine = malloc(len + 1); | ||
521 | strcpy(fullLine, line->indent); | ||
522 | free(line->indent); | ||
523 | line->indent = fullLine; | ||
524 | |||
525 | for (i = 0; i < line->numElements; i++) { | ||
526 | strcat(fullLine, line->elements[i].item); | ||
527 | strcat(fullLine, line->elements[i].indent); | ||
528 | free(line->elements[i].item); | ||
529 | free(line->elements[i].indent); | ||
530 | } | ||
531 | |||
532 | line->type = LT_WHITESPACE; | ||
533 | line->numElements = 0; | ||
534 | } | ||
535 | } | ||
536 | } | ||
537 | |||
538 | return 0; | ||
539 | } | ||
540 | |||
541 | static struct grubConfig * readConfig(const char * inName, | ||
542 | struct configFileInfo * cfi) { | ||
543 | int in; | ||
544 | char * incoming = NULL, * head; | ||
545 | int rc; | ||
546 | int sawEntry = 0; | ||
547 | int movedLine = 0; | ||
548 | struct grubConfig * cfg; | ||
549 | struct singleLine * last = NULL, * line, * defaultLine = NULL; | ||
550 | char * end; | ||
551 | struct singleEntry * entry = NULL; | ||
552 | int i, len; | ||
553 | char * buf; | ||
554 | |||
555 | if (!strcmp(inName, "-")) { | ||
556 | in = 0; | ||
557 | } else { | ||
558 | if ((in = open(inName, O_RDONLY)) < 0) { | ||
559 | fprintf(stderr, _("error opening %s for read: %s\n"), | ||
560 | inName, strerror(errno)); | ||
561 | return NULL; | ||
562 | } | ||
563 | } | ||
564 | |||
565 | rc = readFile(in, &incoming); | ||
566 | close(in); | ||
567 | if (rc) return NULL; | ||
568 | |||
569 | head = incoming; | ||
570 | cfg = malloc(sizeof(*cfg)); | ||
571 | cfg->primaryIndent = strdup(""); | ||
572 | cfg->secondaryIndent = strdup("\t"); | ||
573 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; | ||
574 | cfg->cfi = cfi; | ||
575 | cfg->theLines = NULL; | ||
576 | cfg->entries = NULL; | ||
577 | cfg->fallbackImage = 0; | ||
578 | |||
579 | /* copy everything we have */ | ||
580 | while (*head) { | ||
581 | line = malloc(sizeof(*line)); | ||
582 | lineInit(line); | ||
583 | |||
584 | if (getNextLine(&head, line, cfi)) { | ||
585 | free(line); | ||
586 | /* XXX memory leak of everything in cfg */ | ||
587 | return NULL; | ||
588 | } | ||
589 | |||
590 | if (!sawEntry && line->numElements) { | ||
591 | free(cfg->primaryIndent); | ||
592 | cfg->primaryIndent = strdup(line->indent); | ||
593 | } else if (line->numElements) { | ||
594 | free(cfg->secondaryIndent); | ||
595 | cfg->secondaryIndent = strdup(line->indent); | ||
596 | } | ||
597 | |||
598 | if (isEntrySeparator(line, cfi)) { | ||
599 | sawEntry = 1; | ||
600 | if (!entry) { | ||
601 | cfg->entries = malloc(sizeof(*entry)); | ||
602 | entry = cfg->entries; | ||
603 | } else { | ||
604 | entry->next = malloc(sizeof(*entry)); | ||
605 | entry = entry->next; | ||
606 | } | ||
607 | |||
608 | entry->skip = 0; | ||
609 | entry->multiboot = 0; | ||
610 | entry->lines = NULL; | ||
611 | entry->next = NULL; | ||
612 | } | ||
613 | |||
614 | if (line->type == LT_DEFAULT && line->numElements == 2) { | ||
615 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; | ||
616 | defaultLine = line; | ||
617 | } else if (line->type == LT_MBMODULE) { | ||
618 | entry->multiboot = 1; | ||
619 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { | ||
620 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); | ||
621 | if (*end) cfg->fallbackImage = -1; | ||
622 | } else if (line->type == LT_TITLE && line->numElements > 1) { | ||
623 | /* make the title a single argument (undoing our parsing) */ | ||
624 | len = 0; | ||
625 | for (i = 1; i < line->numElements; i++) { | ||
626 | len += strlen(line->elements[i].item); | ||
627 | len += strlen(line->elements[i].indent); | ||
628 | } | ||
629 | buf = malloc(len + 1); | ||
630 | *buf = '\0'; | ||
631 | |||
632 | for (i = 1; i < line->numElements; i++) { | ||
633 | strcat(buf, line->elements[i].item); | ||
634 | free(line->elements[i].item); | ||
635 | |||
636 | if ((i + 1) != line->numElements) { | ||
637 | strcat(buf, line->elements[i].indent); | ||
638 | free(line->elements[i].indent); | ||
639 | } | ||
640 | } | ||
641 | |||
642 | line->elements[1].indent = | ||
643 | line->elements[line->numElements - 1].indent; | ||
644 | line->elements[1].item = buf; | ||
645 | line->numElements = 2; | ||
646 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { | ||
647 | /* Strip off any " which may be present; they'll be put back | ||
648 | on write. This is one of the few (the only?) places that grubby | ||
649 | canonicalizes the output */ | ||
650 | |||
651 | if (line->numElements >= 2) { | ||
652 | int last, len; | ||
653 | |||
654 | if (*line->elements[1].item == '"') | ||
655 | memcpy(line->elements[1].item, line->elements[1].item + 1, | ||
656 | strlen(line->elements[1].item + 1) + 1); | ||
657 | |||
658 | last = line->numElements - 1; | ||
659 | len = strlen(line->elements[last].item) - 1; | ||
660 | if (line->elements[last].item[len] == '"') | ||
661 | line->elements[last].item[len] = '\0'; | ||
662 | } | ||
663 | |||
664 | } | ||
665 | |||
666 | /* If we find a generic config option which should live at the | ||
667 | top of the file, move it there. Old versions of grubby were | ||
668 | probably responsible for putting new images in the wrong | ||
669 | place in front of it anyway. */ | ||
670 | if (sawEntry && line->type == LT_GENERIC) { | ||
671 | struct singleLine **l = &cfg->theLines; | ||
672 | struct singleLine **last_nonws = &cfg->theLines; | ||
673 | while (*l) { | ||
674 | if ((*l)->type != LT_WHITESPACE) | ||
675 | last_nonws = &((*l)->next); | ||
676 | l = &((*l)->next); | ||
677 | } | ||
678 | line->next = *last_nonws; | ||
679 | *last_nonws = line; | ||
680 | movedLine = 1; | ||
681 | continue; /* without setting 'last' */ | ||
682 | } | ||
683 | /* If a second line of whitespace happens after a generic option | ||
684 | which was moved, drop it. */ | ||
685 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { | ||
686 | lineFree(line); | ||
687 | free(line); | ||
688 | movedLine = 0; | ||
689 | continue; | ||
690 | } | ||
691 | movedLine = 0; | ||
692 | |||
693 | if (sawEntry) { | ||
694 | if (!entry->lines) | ||
695 | entry->lines = line; | ||
696 | else | ||
697 | last->next = line; | ||
698 | } else { | ||
699 | if (!cfg->theLines) | ||
700 | cfg->theLines = line; | ||
701 | else { | ||
702 | last->next = line; | ||
703 | } | ||
704 | } | ||
705 | |||
706 | last = line; | ||
707 | } | ||
708 | |||
709 | free(incoming); | ||
710 | |||
711 | if (defaultLine) { | ||
712 | if (cfi->defaultSupportSaved && | ||
713 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { | ||
714 | cfg->defaultImage = DEFAULT_SAVED; | ||
715 | } else if (cfi->defaultIsIndex) { | ||
716 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); | ||
717 | if (*end) cfg->defaultImage = -1; | ||
718 | } else if (defaultLine->numElements >= 2) { | ||
719 | i = 0; | ||
720 | while ((entry = findEntryByIndex(cfg, i))) { | ||
721 | for (line = entry->lines; line; line = line->next) | ||
722 | if (line->type == LT_TITLE) break; | ||
723 | |||
724 | if (!cfi->titleBracketed) { | ||
725 | if (line && (line->numElements >= 2) && | ||
726 | !strcmp(defaultLine->elements[1].item, | ||
727 | line->elements[1].item)) break; | ||
728 | } else if (line) { | ||
729 | if (!strcmp(defaultLine->elements[1].item, | ||
730 | extractTitle(line))) break; | ||
731 | } | ||
732 | i++; | ||
733 | } | ||
734 | |||
735 | if (entry) cfg->defaultImage = i; | ||
736 | } | ||
737 | } | ||
738 | |||
739 | return cfg; | ||
740 | } | ||
741 | |||
742 | static void writeDefault(FILE * out, char * indent, | ||
743 | char * separator, struct grubConfig * cfg) { | ||
744 | struct singleEntry * entry; | ||
745 | struct singleLine * line; | ||
746 | int i; | ||
747 | |||
748 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; | ||
749 | |||
750 | if (cfg->defaultImage == DEFAULT_SAVED) | ||
751 | fprintf(out, "%sdefault%ssaved\n", indent, separator); | ||
752 | else if (cfg->defaultImage > -1) { | ||
753 | if (cfg->cfi->defaultIsIndex) { | ||
754 | fprintf(out, "%sdefault%s%d\n", indent, separator, | ||
755 | cfg->defaultImage); | ||
756 | } else { | ||
757 | int image = cfg->defaultImage; | ||
758 | |||
759 | entry = cfg->entries; | ||
760 | while (entry && entry->skip) entry = entry->next; | ||
761 | |||
762 | i = 0; | ||
763 | while (entry && i < image) { | ||
764 | entry = entry->next; | ||
765 | |||
766 | while (entry && entry->skip) entry = entry->next; | ||
767 | i++; | ||
768 | } | ||
769 | |||
770 | if (!entry) return; | ||
771 | |||
772 | line = entry->lines; | ||
773 | while (line && line->type != LT_TITLE) line = line->next; | ||
774 | |||
775 | if (line && line->numElements >= 2) | ||
776 | fprintf(out, "%sdefault%s%s\n", indent, separator, | ||
777 | line->elements[1].item); | ||
778 | else if (line && (line->numElements == 1) && | ||
779 | cfg->cfi->titleBracketed) { | ||
780 | fprintf(out, "%sdefault%s%s\n", indent, separator, | ||
781 | extractTitle(line)); | ||
782 | } | ||
783 | } | ||
784 | } | ||
785 | } | ||
786 | |||
787 | static int writeConfig(struct grubConfig * cfg, char * outName, | ||
788 | const char * prefix) { | ||
789 | FILE * out; | ||
790 | struct singleLine * line; | ||
791 | struct singleEntry * entry; | ||
792 | char * tmpOutName; | ||
793 | int needs = MAIN_DEFAULT; | ||
794 | struct stat sb; | ||
795 | int i; | ||
796 | |||
797 | if (!strcmp(outName, "-")) { | ||
798 | out = stdout; | ||
799 | tmpOutName = NULL; | ||
800 | } else { | ||
801 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { | ||
802 | char * buf; | ||
803 | int len = 256; | ||
804 | int rc; | ||
805 | |||
806 | /* most likely the symlink is relative, so change our | ||
807 | directory to / */ | ||
808 | rc = chdir("/"); | ||
809 | do { | ||
810 | buf = alloca(len + 1); | ||
811 | rc = readlink(outName, buf, len); | ||
812 | if (rc == len) len += 256; | ||
813 | } while (rc == len); | ||
814 | |||
815 | if (rc < 0) { | ||
816 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), | ||
817 | outName, strerror(errno)); | ||
818 | return 1; | ||
819 | } | ||
820 | |||
821 | outName = buf; | ||
822 | outName[rc] = '\0'; | ||
823 | } | ||
824 | |||
825 | tmpOutName = alloca(strlen(outName) + 2); | ||
826 | sprintf(tmpOutName, "%s-", outName); | ||
827 | out = fopen(tmpOutName, "w"); | ||
828 | if (!out) { | ||
829 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, | ||
830 | strerror(errno)); | ||
831 | return 1; | ||
832 | } | ||
833 | |||
834 | if (!stat(outName, &sb)) { | ||
835 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { | ||
836 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), | ||
837 | tmpOutName, strerror(errno)); | ||
838 | fclose(out); | ||
839 | unlink(tmpOutName); | ||
840 | return 1; | ||
841 | } | ||
842 | } | ||
843 | } | ||
844 | |||
845 | line = cfg->theLines; | ||
846 | while (line) { | ||
847 | if (line->type == LT_DEFAULT) { | ||
848 | writeDefault(out, line->indent, line->elements[0].indent, cfg); | ||
849 | needs &= ~MAIN_DEFAULT; | ||
850 | } else if (line->type == LT_FALLBACK) { | ||
851 | if (cfg->fallbackImage > -1) | ||
852 | fprintf(out, "%s%s%s%d\n", line->indent, | ||
853 | line->elements[0].item, line->elements[0].indent, | ||
854 | cfg->fallbackImage); | ||
855 | } else { | ||
856 | if (lineWrite(out, line, cfg->cfi) == -1) { | ||
857 | fprintf(stderr, _("grubby: error writing %s: %s\n"), | ||
858 | tmpOutName, strerror(errno)); | ||
859 | fclose(out); | ||
860 | unlink(tmpOutName); | ||
861 | return 1; | ||
862 | } | ||
863 | } | ||
864 | |||
865 | line = line->next; | ||
866 | } | ||
867 | |||
868 | if (needs & MAIN_DEFAULT) { | ||
869 | writeDefault(out, cfg->primaryIndent, "=", cfg); | ||
870 | needs &= ~MAIN_DEFAULT; | ||
871 | } | ||
872 | |||
873 | i = 0; | ||
874 | while ((entry = findEntryByIndex(cfg, i++))) { | ||
875 | if (entry->skip) continue; | ||
876 | |||
877 | line = entry->lines; | ||
878 | while (line) { | ||
879 | if (lineWrite(out, line, cfg->cfi) == -1) { | ||
880 | fprintf(stderr, _("grubby: error writing %s: %s\n"), | ||
881 | tmpOutName, strerror(errno)); | ||
882 | fclose(out); | ||
883 | unlink(tmpOutName); | ||
884 | return 1; | ||
885 | } | ||
886 | line = line->next; | ||
887 | } | ||
888 | } | ||
889 | |||
890 | if (tmpOutName) { | ||
891 | if (rename(tmpOutName, outName)) { | ||
892 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), | ||
893 | tmpOutName, outName, strerror(errno)); | ||
894 | unlink(outName); | ||
895 | return 1; | ||
896 | } | ||
897 | } | ||
898 | |||
899 | return 0; | ||
900 | } | ||
901 | |||
902 | static int numEntries(struct grubConfig *cfg) { | ||
903 | int i = 0; | ||
904 | struct singleEntry * entry; | ||
905 | |||
906 | entry = cfg->entries; | ||
907 | while (entry) { | ||
908 | if (!entry->skip) | ||
909 | i++; | ||
910 | entry = entry->next; | ||
911 | } | ||
912 | return i; | ||
913 | } | ||
914 | |||
915 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, | ||
916 | int skipRemoved, int flags) { | ||
917 | struct singleLine * line; | ||
918 | char * fullName; | ||
919 | int i; | ||
920 | struct stat sb, sb2; | ||
921 | char * dev; | ||
922 | char * end; | ||
923 | char * rootspec; | ||
924 | |||
925 | line = entry->lines; | ||
926 | while (line && line->type != LT_KERNEL) line = line->next; | ||
927 | |||
928 | if (!line) return 0; | ||
929 | if (skipRemoved && entry->skip) return 0; | ||
930 | if (line->numElements < 2) return 0; | ||
931 | |||
932 | if (flags & GRUBBY_BADIMAGE_OKAY) return 1; | ||
933 | |||
934 | fullName = alloca(strlen(bootPrefix) + | ||
935 | strlen(line->elements[1].item) + 1); | ||
936 | rootspec = getRootSpecifier(line->elements[1].item); | ||
937 | sprintf(fullName, "%s%s", bootPrefix, | ||
938 | line->elements[1].item + ((rootspec != NULL) ? | ||
939 | strlen(rootspec) : 0)); | ||
940 | if (access(fullName, R_OK)) return 0; | ||
941 | |||
942 | for (i = 2; i < line->numElements; i++) | ||
943 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; | ||
944 | if (i < line->numElements) { | ||
945 | dev = line->elements[i].item + 5; | ||
946 | } else { | ||
947 | /* look for a lilo style LT_ROOT line */ | ||
948 | line = entry->lines; | ||
949 | while (line && line->type != LT_ROOT) line = line->next; | ||
950 | |||
951 | if (line && line->numElements >= 2) { | ||
952 | dev = line->elements[1].item; | ||
953 | } else { | ||
954 | int type; | ||
955 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS */ | ||
956 | line = entry->lines; | ||
957 | |||
958 | type = ((entry->multiboot) ? LT_MBMODULE : LT_KERNELARGS); | ||
959 | |||
960 | while (line && line->type != type) line = line->next; | ||
961 | |||
962 | /* failed to find one */ | ||
963 | if (!line) return 0; | ||
964 | |||
965 | for (i = 1; i < line->numElements; i++) | ||
966 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; | ||
967 | if (i < line->numElements) | ||
968 | dev = line->elements[i].item + 5; | ||
969 | else { | ||
970 | /* it failed too... can't find root= */ | ||
971 | return 0; | ||
972 | } | ||
973 | } | ||
974 | } | ||
975 | |||
976 | if (!strncmp(dev, "LABEL=", 6)) { | ||
977 | dev += 6; | ||
978 | |||
979 | /* check which device has this label */ | ||
980 | dev = get_spec_by_volume_label(dev, &i, &i); | ||
981 | if (!dev) return 0; | ||
982 | } | ||
983 | |||
984 | if (*dev == '/') { | ||
985 | if (stat(dev, &sb)) | ||
986 | return 0; | ||
987 | } else { | ||
988 | sb.st_rdev = strtol(dev, &end, 16); | ||
989 | if (*end) return 0; | ||
990 | } | ||
991 | stat("/", &sb2); | ||
992 | |||
993 | if (sb.st_rdev != sb2.st_dev) return 0; | ||
994 | |||
995 | return 1; | ||
996 | } | ||
997 | |||
998 | /* returns the first match on or after the one pointed to by index (if index | ||
999 | is not NULL) which is not marked as skip */ | ||
1000 | struct singleEntry * findEntryByPath(struct grubConfig * config, | ||
1001 | const char * kernel, const char * prefix, | ||
1002 | int * index) { | ||
1003 | struct singleEntry * entry = NULL; | ||
1004 | struct singleLine * line; | ||
1005 | int i; | ||
1006 | char * chptr; | ||
1007 | char * rootspec = NULL; | ||
1008 | enum lineType_e checkType = LT_KERNEL; | ||
1009 | |||
1010 | if (isdigit(*kernel)) { | ||
1011 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); | ||
1012 | |||
1013 | i = 0; | ||
1014 | indexVars[i] = strtol(kernel, &chptr, 10); | ||
1015 | while (*chptr == ',') { | ||
1016 | i++; | ||
1017 | kernel = chptr + 1; | ||
1018 | indexVars[i] = strtol(kernel, &chptr, 10); | ||
1019 | } | ||
1020 | |||
1021 | if (*chptr) { | ||
1022 | /* can't parse it, bail */ | ||
1023 | return NULL; | ||
1024 | } | ||
1025 | |||
1026 | indexVars[i + 1] = -1; | ||
1027 | |||
1028 | i = 0; | ||
1029 | if (index) { | ||
1030 | while (i < *index) i++; | ||
1031 | if (indexVars[i] == -1) return NULL; | ||
1032 | } | ||
1033 | |||
1034 | entry = findEntryByIndex(config, indexVars[i]); | ||
1035 | if (!entry) return NULL; | ||
1036 | |||
1037 | line = entry->lines; | ||
1038 | while (line && line->type != LT_KERNEL) | ||
1039 | line = line->next; | ||
1040 | |||
1041 | if (!line) return NULL; | ||
1042 | |||
1043 | if (index) *index = indexVars[i]; | ||
1044 | return entry; | ||
1045 | } | ||
1046 | |||
1047 | if (!strcmp(kernel, "DEFAULT")) { | ||
1048 | if (index && *index > config->defaultImage) { | ||
1049 | entry = NULL; | ||
1050 | } else { | ||
1051 | entry = findEntryByIndex(config, config->defaultImage); | ||
1052 | if (entry && entry->skip) | ||
1053 | entry = NULL; | ||
1054 | else if (index) | ||
1055 | *index = config->defaultImage; | ||
1056 | } | ||
1057 | } else if (!strcmp(kernel, "ALL")) { | ||
1058 | if (index) | ||
1059 | i = *index; | ||
1060 | else | ||
1061 | i = 0; | ||
1062 | |||
1063 | while ((entry = findEntryByIndex(config, i))) { | ||
1064 | if (!entry->skip) break; | ||
1065 | i++; | ||
1066 | } | ||
1067 | |||
1068 | if (entry && index) | ||
1069 | *index = i; | ||
1070 | } else { | ||
1071 | if (index) | ||
1072 | i = *index; | ||
1073 | else | ||
1074 | i = 0; | ||
1075 | |||
1076 | if (!strncmp(kernel, "TITLE=", 6)) { | ||
1077 | prefix = ""; | ||
1078 | checkType = LT_TITLE; | ||
1079 | kernel += 6; | ||
1080 | } | ||
1081 | |||
1082 | while ((entry = findEntryByIndex(config, i))) { | ||
1083 | line = entry->lines; | ||
1084 | while (line && line->type != checkType) line=line->next; | ||
1085 | |||
1086 | |||
1087 | if (line && line->numElements >= 2 && !entry->skip) { | ||
1088 | rootspec = getRootSpecifier(line->elements[1].item); | ||
1089 | if (!strcmp(line->elements[1].item + | ||
1090 | ((rootspec != NULL) ? strlen(rootspec) : 0), | ||
1091 | kernel + strlen(prefix))) | ||
1092 | break; | ||
1093 | } | ||
1094 | |||
1095 | /* have to check multiboot lines too */ | ||
1096 | if (entry->multiboot) { | ||
1097 | while (line && line->type != LT_MBMODULE) line = line->next; | ||
1098 | if (line && line->numElements >= 2 && !entry->skip) { | ||
1099 | rootspec = getRootSpecifier(line->elements[1].item); | ||
1100 | if (!strcmp(line->elements[1].item + | ||
1101 | ((rootspec != NULL) ? strlen(rootspec) : 0), | ||
1102 | kernel + strlen(prefix))) | ||
1103 | break; | ||
1104 | } | ||
1105 | } | ||
1106 | |||
1107 | i++; | ||
1108 | } | ||
1109 | |||
1110 | if (index) *index = i; | ||
1111 | } | ||
1112 | |||
1113 | if (!entry) return NULL; | ||
1114 | |||
1115 | /* make sure this entry has a kernel identifier; this skips non-Linux | ||
1116 | boot entries (could find netbsd etc, though, which is unfortunate) */ | ||
1117 | line = entry->lines; | ||
1118 | while (line && line->type != LT_KERNEL) line = line->next; | ||
1119 | if (!line) { | ||
1120 | if (!index) index = &i; | ||
1121 | (*index)++; | ||
1122 | return findEntryByPath(config, kernel, prefix, index); | ||
1123 | } | ||
1124 | |||
1125 | return entry; | ||
1126 | } | ||
1127 | |||
1128 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { | ||
1129 | struct singleEntry * entry; | ||
1130 | |||
1131 | entry = cfg->entries; | ||
1132 | while (index && entry) { | ||
1133 | entry = entry->next; | ||
1134 | index--; | ||
1135 | } | ||
1136 | |||
1137 | return entry; | ||
1138 | } | ||
1139 | |||
1140 | /* Find a good template to use for the new kernel. An entry is | ||
1141 | * good if the kernel and mkinitrd exist (even if the entry | ||
1142 | * is going to be removed). Try and use the default entry, but | ||
1143 | * if that doesn't work just take the first. If we can't find one, | ||
1144 | * bail. */ | ||
1145 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, | ||
1146 | int * indexPtr, int skipRemoved, int flags) { | ||
1147 | struct singleEntry * entry, * entry2; | ||
1148 | int index; | ||
1149 | |||
1150 | if (cfg->defaultImage > -1) { | ||
1151 | entry = findEntryByIndex(cfg, cfg->defaultImage); | ||
1152 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { | ||
1153 | if (indexPtr) *indexPtr = cfg->defaultImage; | ||
1154 | return entry; | ||
1155 | } | ||
1156 | } | ||
1157 | |||
1158 | index = 0; | ||
1159 | while ((entry = findEntryByIndex(cfg, index))) { | ||
1160 | if (suitableImage(entry, prefix, skipRemoved, flags)) { | ||
1161 | int j; | ||
1162 | for (j = 0; j < index; j++) { | ||
1163 | entry2 = findEntryByIndex(cfg, j); | ||
1164 | if (entry2->skip) index--; | ||
1165 | } | ||
1166 | if (indexPtr) *indexPtr = index; | ||
1167 | |||
1168 | return entry; | ||
1169 | } | ||
1170 | |||
1171 | index++; | ||
1172 | } | ||
1173 | |||
1174 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); | ||
1175 | |||
1176 | return NULL; | ||
1177 | } | ||
1178 | |||
1179 | char * findBootPrefix(void) { | ||
1180 | struct stat sb, sb2; | ||
1181 | |||
1182 | stat("/", &sb); | ||
1183 | #ifdef __ia64__ | ||
1184 | stat("/boot/efi/EFI/redhat/", &sb2); | ||
1185 | #else | ||
1186 | stat("/boot", &sb2); | ||
1187 | #endif | ||
1188 | |||
1189 | if (sb.st_dev == sb2.st_dev) | ||
1190 | return strdup(""); | ||
1191 | |||
1192 | #ifdef __ia64__ | ||
1193 | return strdup("/boot/efi/EFI/redhat/"); | ||
1194 | #else | ||
1195 | return strdup("/boot"); | ||
1196 | #endif | ||
1197 | } | ||
1198 | |||
1199 | void markRemovedImage(struct grubConfig * cfg, const char * image, | ||
1200 | const char * prefix) { | ||
1201 | struct singleEntry * entry; | ||
1202 | |||
1203 | if (!image) return; | ||
1204 | |||
1205 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) | ||
1206 | entry->skip = 1; | ||
1207 | } | ||
1208 | |||
1209 | void setDefaultImage(struct grubConfig * config, int hasNew, | ||
1210 | const char * defaultKernelPath, int newIsDefault, | ||
1211 | const char * prefix, int flags) { | ||
1212 | struct singleEntry * entry, * entry2, * newDefault; | ||
1213 | int i, j; | ||
1214 | |||
1215 | if (newIsDefault) { | ||
1216 | config->defaultImage = 0; | ||
1217 | return; | ||
1218 | } else if (defaultKernelPath) { | ||
1219 | i = 0; | ||
1220 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { | ||
1221 | config->defaultImage = i; | ||
1222 | } else { | ||
1223 | config->defaultImage = -1; | ||
1224 | return; | ||
1225 | } | ||
1226 | } | ||
1227 | |||
1228 | /* defaultImage now points to what we'd like to use, but before any order | ||
1229 | changes */ | ||
1230 | if (config->defaultImage == DEFAULT_SAVED) | ||
1231 | /* default is set to saved, we don't want to change it */ | ||
1232 | return; | ||
1233 | |||
1234 | if (config->defaultImage > -1) | ||
1235 | entry = findEntryByIndex(config, config->defaultImage); | ||
1236 | else | ||
1237 | entry = NULL; | ||
1238 | |||
1239 | if (entry && !entry->skip) { | ||
1240 | /* we can preserve the default */ | ||
1241 | if (hasNew) | ||
1242 | config->defaultImage++; | ||
1243 | |||
1244 | /* count the number of entries erased before this one */ | ||
1245 | for (j = 0; j < config->defaultImage; j++) { | ||
1246 | entry2 = findEntryByIndex(config, j); | ||
1247 | if (entry2->skip) config->defaultImage--; | ||
1248 | } | ||
1249 | } else if (hasNew) { | ||
1250 | config->defaultImage = 0; | ||
1251 | } else { | ||
1252 | /* Either we just erased the default (or the default line was bad | ||
1253 | * to begin with) and didn't put a new one in. We'll use the first | ||
1254 | * valid image. */ | ||
1255 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, | ||
1256 | flags); | ||
1257 | if (!newDefault) | ||
1258 | config->defaultImage = -1; | ||
1259 | } | ||
1260 | } | ||
1261 | |||
1262 | void setFallbackImage(struct grubConfig * config, int hasNew) { | ||
1263 | struct singleEntry * entry, * entry2; | ||
1264 | int j; | ||
1265 | |||
1266 | if (config->fallbackImage == -1) return; | ||
1267 | |||
1268 | entry = findEntryByIndex(config, config->fallbackImage); | ||
1269 | if (!entry || entry->skip) { | ||
1270 | config->fallbackImage = -1; | ||
1271 | return; | ||
1272 | } | ||
1273 | |||
1274 | if (hasNew) | ||
1275 | config->fallbackImage++; | ||
1276 | |||
1277 | /* count the number of entries erased before this one */ | ||
1278 | for (j = 0; j < config->fallbackImage; j++) { | ||
1279 | entry2 = findEntryByIndex(config, j); | ||
1280 | if (entry2->skip) config->fallbackImage--; | ||
1281 | } | ||
1282 | } | ||
1283 | |||
1284 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { | ||
1285 | struct singleLine * line; | ||
1286 | char * root = NULL; | ||
1287 | int i; | ||
1288 | |||
1289 | line = entry->lines; | ||
1290 | while (line && line->type != LT_KERNEL) line = line->next; | ||
1291 | |||
1292 | printf("index=%d\n", index); | ||
1293 | |||
1294 | printf("kernel=%s\n", line->elements[1].item); | ||
1295 | |||
1296 | if (line->numElements >= 3) { | ||
1297 | printf("args=\""); | ||
1298 | i = 2; | ||
1299 | while (i < line->numElements) { | ||
1300 | if (!strncmp(line->elements[i].item, "root=", 5)) { | ||
1301 | root = line->elements[i].item + 5; | ||
1302 | } else { | ||
1303 | printf("%s%s", line->elements[i].item, | ||
1304 | line->elements[i].indent); | ||
1305 | } | ||
1306 | |||
1307 | i++; | ||
1308 | } | ||
1309 | printf("\"\n"); | ||
1310 | } else { | ||
1311 | line = entry->lines; | ||
1312 | while (line && line->type != LT_KERNELARGS) line=line->next; | ||
1313 | |||
1314 | if (line) { | ||
1315 | char * s; | ||
1316 | |||
1317 | printf("args=\""); | ||
1318 | i = 1; | ||
1319 | while (i < line->numElements) { | ||
1320 | if (!strncmp(line->elements[i].item, "root=", 5)) { | ||
1321 | root = line->elements[i].item + 5; | ||
1322 | } else { | ||
1323 | s = line->elements[i].item; | ||
1324 | |||
1325 | printf("%s%s", s, line->elements[i].indent); | ||
1326 | } | ||
1327 | |||
1328 | i++; | ||
1329 | } | ||
1330 | |||
1331 | s = line->elements[i - 1].indent; | ||
1332 | printf("\"\n"); | ||
1333 | } | ||
1334 | } | ||
1335 | |||
1336 | if (!root) { | ||
1337 | line = entry->lines; | ||
1338 | while (line && line->type != LT_ROOT) line = line->next; | ||
1339 | |||
1340 | if (line && line->numElements >= 2) | ||
1341 | root=line->elements[1].item; | ||
1342 | } | ||
1343 | |||
1344 | if (root) { | ||
1345 | char * s = alloca(strlen(root) + 1); | ||
1346 | |||
1347 | strcpy(s, root); | ||
1348 | if (s[strlen(s) - 1] == '"') | ||
1349 | s[strlen(s) - 1] = '\0'; | ||
1350 | /* make sure the root doesn't have a trailing " */ | ||
1351 | printf("root=%s\n", s); | ||
1352 | } | ||
1353 | |||
1354 | line = entry->lines; | ||
1355 | while (line && line->type != LT_INITRD) line = line->next; | ||
1356 | |||
1357 | if (line && line->numElements >= 2) { | ||
1358 | printf("initrd=%s", prefix); | ||
1359 | for (i = 1; i < line->numElements; i++) | ||
1360 | printf("%s%s", line->elements[i].item, line->elements[i].indent); | ||
1361 | printf("\n"); | ||
1362 | } | ||
1363 | } | ||
1364 | |||
1365 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { | ||
1366 | FILE * in; | ||
1367 | char buf[1024]; | ||
1368 | char * chptr; | ||
1369 | char * start; | ||
1370 | char * param; | ||
1371 | |||
1372 | in = fopen("/etc/sysconfig/grub", "r"); | ||
1373 | if (!in) return 1; | ||
1374 | |||
1375 | if (lbaPtr) *lbaPtr = 0; | ||
1376 | if (bootPtr) *bootPtr = NULL; | ||
1377 | |||
1378 | while (fgets(buf, sizeof(buf), in)) { | ||
1379 | start = buf; | ||
1380 | while (isspace(*start)) start++; | ||
1381 | if (*start == '#') continue; | ||
1382 | |||
1383 | chptr = strchr(start, '='); | ||
1384 | if (!chptr) continue; | ||
1385 | chptr--; | ||
1386 | while (*chptr && isspace(*chptr)) chptr--; | ||
1387 | chptr++; | ||
1388 | *chptr = '\0'; | ||
1389 | |||
1390 | param = chptr + 1; | ||
1391 | while (*param && isspace(*param)) param++; | ||
1392 | if (*param == '=') { | ||
1393 | param++; | ||
1394 | while (*param && isspace(*param)) param++; | ||
1395 | } | ||
1396 | |||
1397 | chptr = param; | ||
1398 | while (*chptr && !isspace(*chptr)) chptr++; | ||
1399 | *chptr = '\0'; | ||
1400 | |||
1401 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) | ||
1402 | *lbaPtr = 1; | ||
1403 | else if (!strcmp(start, "boot") && bootPtr) | ||
1404 | *bootPtr = strdup(param); | ||
1405 | } | ||
1406 | |||
1407 | fclose(in); | ||
1408 | |||
1409 | return 0; | ||
1410 | } | ||
1411 | |||
1412 | void dumpSysconfigGrub(void) { | ||
1413 | char * boot; | ||
1414 | int lba; | ||
1415 | |||
1416 | if (!parseSysconfigGrub(&lba, &boot)) { | ||
1417 | if (lba) printf("lba\n"); | ||
1418 | if (boot) printf("boot=%s\n", boot); | ||
1419 | } | ||
1420 | } | ||
1421 | |||
1422 | int displayInfo(struct grubConfig * config, char * kernel, | ||
1423 | const char * prefix) { | ||
1424 | int i = 0; | ||
1425 | struct singleEntry * entry; | ||
1426 | struct singleLine * line; | ||
1427 | |||
1428 | entry = findEntryByPath(config, kernel, prefix, &i); | ||
1429 | if (!entry) { | ||
1430 | fprintf(stderr, _("grubby: kernel not found\n")); | ||
1431 | return 1; | ||
1432 | } | ||
1433 | |||
1434 | /* this is a horrible hack to support /etc/sysconfig/grub; there must | ||
1435 | be a better way */ | ||
1436 | if (config->cfi == &grubConfigType) { | ||
1437 | dumpSysconfigGrub(); | ||
1438 | } else { | ||
1439 | line = config->theLines; | ||
1440 | while (line && line->type != LT_BOOT) line = line->next; | ||
1441 | if (line && line->numElements >= 1) { | ||
1442 | printf("boot=%s\n", line->elements[1].item); | ||
1443 | } | ||
1444 | |||
1445 | line = config->theLines; | ||
1446 | while (line && line->type != LT_LBA) line = line->next; | ||
1447 | if (line) printf("lba\n"); | ||
1448 | } | ||
1449 | |||
1450 | displayEntry(entry, prefix, i); | ||
1451 | |||
1452 | i++; | ||
1453 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { | ||
1454 | displayEntry(entry, prefix, i); | ||
1455 | i++; | ||
1456 | } | ||
1457 | |||
1458 | return 0; | ||
1459 | } | ||
1460 | |||
1461 | /* val may be NULL */ | ||
1462 | struct singleLine * addLine(struct singleEntry * entry, | ||
1463 | struct configFileInfo * cfi, | ||
1464 | enum lineType_e type, const char * defaultIndent, | ||
1465 | char * val) { | ||
1466 | struct singleLine * line, * prev; | ||
1467 | int i; | ||
1468 | |||
1469 | for (i = 0; cfi->keywords[i].key; i++) | ||
1470 | if (cfi->keywords[i].type == type) break; | ||
1471 | if (type != LT_TITLE || !cfi->titleBracketed) | ||
1472 | if (!cfi->keywords[i].key) abort(); | ||
1473 | |||
1474 | /* The last non-empty line gives us the indention to us and the line | ||
1475 | to insert after. Note that comments are considered empty lines, which | ||
1476 | may not be ideal? If there are no lines or we are looking at the | ||
1477 | first line, we use defaultIndent (the first line is normally indented | ||
1478 | differently from the rest) */ | ||
1479 | if (entry->lines) { | ||
1480 | line = entry->lines; | ||
1481 | prev = NULL; | ||
1482 | while (line) { | ||
1483 | if (line->numElements) prev = line; | ||
1484 | line = line->next; | ||
1485 | } | ||
1486 | if (!prev) { | ||
1487 | /* just use the last line */ | ||
1488 | prev = entry->lines; | ||
1489 | while (prev->next) prev = prev->next; | ||
1490 | } | ||
1491 | |||
1492 | line = prev->next; | ||
1493 | prev->next = malloc(sizeof(*line)); | ||
1494 | prev->next->next = line; | ||
1495 | line = prev->next; | ||
1496 | |||
1497 | if (prev == entry->lines) | ||
1498 | line->indent = strdup(defaultIndent); | ||
1499 | else | ||
1500 | line->indent = strdup(prev->indent); | ||
1501 | } else { | ||
1502 | line = malloc(sizeof(*line)); | ||
1503 | line->indent = strdup(defaultIndent); | ||
1504 | line->next = NULL; | ||
1505 | } | ||
1506 | |||
1507 | if (type != LT_TITLE || !cfi->titleBracketed) { | ||
1508 | line->type = type; | ||
1509 | line->numElements = val ? 2 : 1; | ||
1510 | line->elements = malloc(sizeof(*line->elements) * line->numElements); | ||
1511 | line->elements[0].item = strdup(cfi->keywords[i].key); | ||
1512 | line->elements[0].indent = malloc(2); | ||
1513 | line->elements[0].indent[0] = cfi->keywords[i].nextChar; | ||
1514 | line->elements[0].indent[1] = '\0'; | ||
1515 | |||
1516 | if (val) { | ||
1517 | line->elements[1].item = val; | ||
1518 | line->elements[1].indent = strdup(""); | ||
1519 | } | ||
1520 | } else { | ||
1521 | /* we're doing the title of a bracketed title (zipl) */ | ||
1522 | line->type = type; | ||
1523 | line->numElements = 1; | ||
1524 | line->elements = malloc(sizeof(*line->elements) * line->numElements); | ||
1525 | |||
1526 | line->elements[0].item = malloc(strlen(val) + 3); | ||
1527 | sprintf(line->elements[0].item, "[%s]", val); | ||
1528 | line->elements[0].indent = strdup(""); | ||
1529 | } | ||
1530 | |||
1531 | return line; | ||
1532 | } | ||
1533 | |||
1534 | void removeLine(struct singleEntry * entry, struct singleLine * line) { | ||
1535 | struct singleLine * prev; | ||
1536 | int i; | ||
1537 | |||
1538 | for (i = 0; i < line->numElements; i++) { | ||
1539 | free(line->elements[i].item); | ||
1540 | free(line->elements[i].indent); | ||
1541 | } | ||
1542 | free(line->elements); | ||
1543 | free(line->indent); | ||
1544 | |||
1545 | if (line == entry->lines) { | ||
1546 | entry->lines = line->next; | ||
1547 | } else { | ||
1548 | prev = entry->lines; | ||
1549 | while (prev->next != line) prev = prev->next; | ||
1550 | prev->next = line->next; | ||
1551 | } | ||
1552 | |||
1553 | free(line); | ||
1554 | } | ||
1555 | |||
1556 | int argMatch(const char * one, const char * two) { | ||
1557 | char * first, * second; | ||
1558 | char * chptr; | ||
1559 | |||
1560 | first = strcpy(alloca(strlen(one) + 1), one); | ||
1561 | second = strcpy(alloca(strlen(two) + 1), two); | ||
1562 | |||
1563 | chptr = strchr(first, '='); | ||
1564 | if (chptr) *chptr = '\0'; | ||
1565 | |||
1566 | chptr = strchr(second, '='); | ||
1567 | if (chptr) *chptr = '\0'; | ||
1568 | |||
1569 | return strcmp(first, second); | ||
1570 | } | ||
1571 | |||
1572 | int updateActualImage(struct grubConfig * cfg, const char * image, | ||
1573 | const char * prefix, const char * addArgs, | ||
1574 | const char * removeArgs, int multibootArgs) { | ||
1575 | struct singleEntry * entry; | ||
1576 | struct singleLine * line, * rootLine; | ||
1577 | int index = 0; | ||
1578 | int i, j, k; | ||
1579 | const char ** newArgs, ** oldArgs; | ||
1580 | const char ** arg; | ||
1581 | const char * chptr; | ||
1582 | int useKernelArgs = 0; | ||
1583 | int useRoot = 0; | ||
1584 | int firstElement; | ||
1585 | int *usedElements, *usedArgs; | ||
1586 | |||
1587 | if (!image) return 0; | ||
1588 | |||
1589 | if (!addArgs) { | ||
1590 | newArgs = malloc(sizeof(*newArgs)); | ||
1591 | *newArgs = NULL; | ||
1592 | } else { | ||
1593 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { | ||
1594 | fprintf(stderr, | ||
1595 | _("grubby: error separating arguments '%s'\n"), addArgs); | ||
1596 | return 1; | ||
1597 | } | ||
1598 | } | ||
1599 | |||
1600 | if (!removeArgs) { | ||
1601 | oldArgs = malloc(sizeof(*oldArgs)); | ||
1602 | *oldArgs = NULL; | ||
1603 | } else { | ||
1604 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { | ||
1605 | fprintf(stderr, | ||
1606 | _("grubby: error separating arguments '%s'\n"), removeArgs); | ||
1607 | free(newArgs); | ||
1608 | return 1; | ||
1609 | } | ||
1610 | } | ||
1611 | |||
1612 | for (i = 0; cfg->cfi->keywords[i].key; i++) | ||
1613 | if (cfg->cfi->keywords[i].type == LT_KERNELARGS) break; | ||
1614 | |||
1615 | if (cfg->cfi->keywords[i].key) | ||
1616 | useKernelArgs = 1; | ||
1617 | |||
1618 | for (i = 0; cfg->cfi->keywords[i].key; i++) | ||
1619 | if (cfg->cfi->keywords[i].type == LT_ROOT) break; | ||
1620 | |||
1621 | if (cfg->cfi->keywords[i].key) | ||
1622 | useRoot = 1; | ||
1623 | |||
1624 | k = 0; | ||
1625 | for (arg = newArgs; *arg; arg++) | ||
1626 | k++; | ||
1627 | usedArgs = calloc(k, sizeof(int)); | ||
1628 | |||
1629 | while ((entry = findEntryByPath(cfg, image, prefix, &index))) { | ||
1630 | index++; | ||
1631 | |||
1632 | line = entry->lines; | ||
1633 | while (line && line->type != LT_KERNEL) line = line->next; | ||
1634 | if (!line) continue; | ||
1635 | firstElement = 2; | ||
1636 | |||
1637 | if (entry->multiboot && !multibootArgs) { | ||
1638 | /* first mb module line is the real kernel */ | ||
1639 | while (line && line->type != LT_MBMODULE) line = line->next; | ||
1640 | firstElement = 2; | ||
1641 | } else if (useKernelArgs) { | ||
1642 | while (line && line->type != LT_KERNELARGS) line = line->next; | ||
1643 | firstElement = 1; | ||
1644 | } | ||
1645 | |||
1646 | if (!line && useKernelArgs) { | ||
1647 | /* no append in there, need to add it */ | ||
1648 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, NULL, NULL); | ||
1649 | } | ||
1650 | |||
1651 | usedElements = calloc(line->numElements, sizeof(int)); | ||
1652 | |||
1653 | k = 0; | ||
1654 | for (arg = newArgs; *arg; arg++) { | ||
1655 | if (usedArgs[k]) { | ||
1656 | k++; | ||
1657 | continue; | ||
1658 | } | ||
1659 | for (i = firstElement; i < line->numElements; i++) { | ||
1660 | if (usedElements[i]) | ||
1661 | continue; | ||
1662 | if (!argMatch(line->elements[i].item, *arg)) { | ||
1663 | usedElements[i]=1; | ||
1664 | usedArgs[k]=1; | ||
1665 | break; | ||
1666 | } | ||
1667 | } | ||
1668 | chptr = strchr(*arg, '='); | ||
1669 | |||
1670 | if (i < line->numElements) { | ||
1671 | /* replace */ | ||
1672 | free(line->elements[i].item); | ||
1673 | line->elements[i].item = strdup(*arg); | ||
1674 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10) && *chptr) { | ||
1675 | rootLine = entry->lines; | ||
1676 | while (rootLine && rootLine->type != LT_ROOT) | ||
1677 | rootLine = rootLine->next; | ||
1678 | if (!rootLine) { | ||
1679 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, NULL, NULL); | ||
1680 | rootLine->elements = realloc(rootLine->elements, | ||
1681 | 2 * sizeof(*rootLine->elements)); | ||
1682 | rootLine->numElements++; | ||
1683 | rootLine->elements[1].indent = strdup(""); | ||
1684 | rootLine->elements[1].item = strdup(""); | ||
1685 | } | ||
1686 | |||
1687 | free(rootLine->elements[1].item); | ||
1688 | rootLine->elements[1].item = strdup(chptr + 1); | ||
1689 | } else { | ||
1690 | /* append */ | ||
1691 | line->elements = realloc(line->elements, | ||
1692 | (line->numElements + 1) * sizeof(*line->elements)); | ||
1693 | line->elements[line->numElements].item = strdup(*arg); | ||
1694 | usedElements = realloc(usedElements, | ||
1695 | (line->numElements + 1) * sizeof(int)); | ||
1696 | usedElements[line->numElements] = 1; | ||
1697 | |||
1698 | if (line->numElements > 1) { | ||
1699 | /* add to existing list of arguments */ | ||
1700 | line->elements[line->numElements].indent = | ||
1701 | line->elements[line->numElements - 1].indent; | ||
1702 | line->elements[line->numElements - 1].indent = strdup(" "); | ||
1703 | } else { | ||
1704 | /* First thing on this line; treat a bit differently. Note | ||
1705 | this is only possible if we've added a LT_KERNELARGS | ||
1706 | entry */ | ||
1707 | line->elements[line->numElements].indent = strdup(""); | ||
1708 | } | ||
1709 | |||
1710 | line->numElements++; | ||
1711 | |||
1712 | /* if we updated a root= here even though there is a | ||
1713 | LT_ROOT available we need to remove the LT_ROOT entry | ||
1714 | (this will happen if we switch from a device to a label) */ | ||
1715 | if (useRoot && !strncmp(*arg, "root=", 5)) { | ||
1716 | rootLine = entry->lines; | ||
1717 | while (rootLine && rootLine->type != LT_ROOT) | ||
1718 | rootLine = rootLine->next; | ||
1719 | if (rootLine) { | ||
1720 | removeLine(entry, rootLine); | ||
1721 | } | ||
1722 | } | ||
1723 | } | ||
1724 | k++; | ||
1725 | } | ||
1726 | |||
1727 | free(usedElements); | ||
1728 | |||
1729 | /* no arguments to remove (i.e. no append line) */ | ||
1730 | if (!line) continue; | ||
1731 | |||
1732 | /* this won't remove an LT_ROOT item properly (but then again, | ||
1733 | who cares? */ | ||
1734 | for (arg = oldArgs; *arg; arg++) { | ||
1735 | for (i = firstElement; i < line->numElements; i++) | ||
1736 | if (!argMatch(line->elements[i].item, *arg)) | ||
1737 | break; | ||
1738 | |||
1739 | if (i < line->numElements) { | ||
1740 | /* if this isn't the first argument the previous argument | ||
1741 | gets this arguments post-indention */ | ||
1742 | if (i > firstElement) { | ||
1743 | free(line->elements[i - 1].indent); | ||
1744 | line->elements[i - 1].indent = line->elements[i].indent; | ||
1745 | } | ||
1746 | |||
1747 | free(line->elements[i].item); | ||
1748 | |||
1749 | for (j = i + 1; j < line->numElements; j++) | ||
1750 | line->elements[j - 1] = line->elements[j]; | ||
1751 | |||
1752 | line->numElements--; | ||
1753 | } | ||
1754 | } | ||
1755 | |||
1756 | if (line->numElements == 1) { | ||
1757 | /* don't need the line at all (note it has to be a | ||
1758 | LT_KERNELARGS for this to happen */ | ||
1759 | removeLine(entry, line); | ||
1760 | } | ||
1761 | } | ||
1762 | |||
1763 | free(usedArgs); | ||
1764 | free(newArgs); | ||
1765 | free(oldArgs); | ||
1766 | |||
1767 | return 0; | ||
1768 | } | ||
1769 | |||
1770 | int updateImage(struct grubConfig * cfg, const char * image, | ||
1771 | const char * prefix, const char * addArgs, | ||
1772 | const char * removeArgs, | ||
1773 | const char * addMBArgs, const char * removeMBArgs) { | ||
1774 | int rc = 0; | ||
1775 | |||
1776 | if (!image) return rc; | ||
1777 | |||
1778 | /* update the main args first... */ | ||
1779 | if (addArgs || removeArgs) | ||
1780 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); | ||
1781 | if (rc) return rc; | ||
1782 | |||
1783 | /* and now any multiboot args */ | ||
1784 | if (addMBArgs || removeMBArgs) | ||
1785 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); | ||
1786 | return rc; | ||
1787 | } | ||
1788 | |||
1789 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { | ||
1790 | int fd; | ||
1791 | unsigned char bootSect[512]; | ||
1792 | int offset; | ||
1793 | |||
1794 | fd = open(device, O_RDONLY); | ||
1795 | if (fd < 0) { | ||
1796 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), | ||
1797 | device, strerror(errno)); | ||
1798 | return 1; | ||
1799 | } | ||
1800 | |||
1801 | if (read(fd, bootSect, 512) != 512) { | ||
1802 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), | ||
1803 | device, strerror(errno)); | ||
1804 | return 1; | ||
1805 | } | ||
1806 | close(fd); | ||
1807 | |||
1808 | /* first three bytes should match, a jmp short should be in there */ | ||
1809 | if (memcmp(boot, bootSect, 3)) | ||
1810 | return 0; | ||
1811 | |||
1812 | if (boot[1] == 0xeb) { | ||
1813 | offset = boot[2] + 2; | ||
1814 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { | ||
1815 | offset = (boot[3] << 8) + boot[2] + 2; | ||
1816 | } else if (boot[0] == 0xeb) { | ||
1817 | offset = boot[1] + 2; | ||
1818 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { | ||
1819 | offset = (boot[2] << 8) + boot[1] + 2; | ||
1820 | } else { | ||
1821 | return 0; | ||
1822 | } | ||
1823 | |||
1824 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) | ||
1825 | return 0; | ||
1826 | |||
1827 | return 2; | ||
1828 | } | ||
1829 | |||
1830 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { | ||
1831 | int fd; | ||
1832 | char buf[65536]; | ||
1833 | char * end; | ||
1834 | char * chptr; | ||
1835 | char * chptr2; | ||
1836 | int rc; | ||
1837 | |||
1838 | /* it's on raid; we need to parse /proc/mdstat and check all of the | ||
1839 | *raw* devices listed in there */ | ||
1840 | |||
1841 | if (!strncmp(mdDev, "/dev/", 5)) | ||
1842 | mdDev += 5; | ||
1843 | |||
1844 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { | ||
1845 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), | ||
1846 | strerror(errno)); | ||
1847 | return 2; | ||
1848 | } | ||
1849 | |||
1850 | rc = read(fd, buf, sizeof(buf) - 1); | ||
1851 | if (rc < 0 || rc == (sizeof(buf) - 1)) { | ||
1852 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), | ||
1853 | strerror(errno)); | ||
1854 | close(fd); | ||
1855 | return 2; | ||
1856 | } | ||
1857 | close(fd); | ||
1858 | buf[rc] = '\0'; | ||
1859 | |||
1860 | chptr = buf; | ||
1861 | while (*chptr) { | ||
1862 | end = strchr(chptr, '\n'); | ||
1863 | if (!end) break; | ||
1864 | *end = '\0'; | ||
1865 | |||
1866 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && | ||
1867 | chptr[strlen(mdDev)] == ' ') { | ||
1868 | |||
1869 | /* found the device */ | ||
1870 | while (*chptr && *chptr != ':') chptr++; | ||
1871 | chptr++; | ||
1872 | while (*chptr && isspace(*chptr)) chptr++; | ||
1873 | |||
1874 | /* skip the "active" bit */ | ||
1875 | while (*chptr && !isspace(*chptr)) chptr++; | ||
1876 | while (*chptr && isspace(*chptr)) chptr++; | ||
1877 | |||
1878 | /* skip the raid level */ | ||
1879 | while (*chptr && !isspace(*chptr)) chptr++; | ||
1880 | while (*chptr && isspace(*chptr)) chptr++; | ||
1881 | |||
1882 | /* everything else is partition stuff */ | ||
1883 | while (*chptr) { | ||
1884 | chptr2 = chptr; | ||
1885 | while (*chptr2 && *chptr2 != '[') chptr2++; | ||
1886 | if (!*chptr2) break; | ||
1887 | |||
1888 | /* yank off the numbers at the end */ | ||
1889 | chptr2--; | ||
1890 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; | ||
1891 | chptr2++; | ||
1892 | *chptr2 = '\0'; | ||
1893 | |||
1894 | /* Better, now we need the /dev/ back. We're done with | ||
1895 | * everything before this point, so we can just put | ||
1896 | * the /dev/ part there. There will always be room. */ | ||
1897 | memcpy(chptr - 5, "/dev/", 5); | ||
1898 | rc = checkDeviceBootloader(chptr - 5, boot); | ||
1899 | if (rc != 2) { | ||
1900 | return rc; | ||
1901 | } | ||
1902 | |||
1903 | chptr = chptr2 + 1; | ||
1904 | /* skip the [11] bit */ | ||
1905 | while (*chptr && !isspace(*chptr)) chptr++; | ||
1906 | /* and move to the next one */ | ||
1907 | while (*chptr && isspace(*chptr)) chptr++; | ||
1908 | } | ||
1909 | |||
1910 | /* we're good to go */ | ||
1911 | return 2; | ||
1912 | } | ||
1913 | |||
1914 | chptr = end + 1; | ||
1915 | } | ||
1916 | |||
1917 | fprintf(stderr, | ||
1918 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), | ||
1919 | mdDev); | ||
1920 | return 0; | ||
1921 | } | ||
1922 | |||
1923 | int checkForLilo(struct grubConfig * config) { | ||
1924 | int fd; | ||
1925 | unsigned char boot[512]; | ||
1926 | struct singleLine * line; | ||
1927 | |||
1928 | for (line = config->theLines; line; line = line->next) | ||
1929 | if (line->type == LT_BOOT) break; | ||
1930 | |||
1931 | if (!line) { | ||
1932 | fprintf(stderr, | ||
1933 | _("grubby: no boot line found in lilo configuration\n")); | ||
1934 | return 1; | ||
1935 | } | ||
1936 | |||
1937 | if (line->numElements != 2) return 1; | ||
1938 | |||
1939 | fd = open("/boot/boot.b", O_RDONLY); | ||
1940 | if (fd < 0) { | ||
1941 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), | ||
1942 | "/boot/boot.b", strerror(errno)); | ||
1943 | return 1; | ||
1944 | } | ||
1945 | |||
1946 | if (read(fd, boot, 512) != 512) { | ||
1947 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), | ||
1948 | "/boot/boot.b", strerror(errno)); | ||
1949 | return 1; | ||
1950 | } | ||
1951 | close(fd); | ||
1952 | |||
1953 | if (!strncmp("/dev/md", line->elements[1].item, 7)) | ||
1954 | return checkLiloOnRaid(line->elements[1].item, boot); | ||
1955 | |||
1956 | return checkDeviceBootloader(line->elements[1].item, boot); | ||
1957 | } | ||
1958 | |||
1959 | int checkForGrub(struct grubConfig * config) { | ||
1960 | int fd; | ||
1961 | unsigned char bootSect[512]; | ||
1962 | char * boot; | ||
1963 | |||
1964 | if (parseSysconfigGrub(NULL, &boot)) | ||
1965 | return 0; | ||
1966 | |||
1967 | /* assume grub is not installed -- not an error condition */ | ||
1968 | if (!boot) | ||
1969 | return 0; | ||
1970 | |||
1971 | fd = open("/boot/grub/stage1", O_RDONLY); | ||
1972 | if (fd < 0) | ||
1973 | /* this doesn't exist if grub hasn't been installed */ | ||
1974 | return 0; | ||
1975 | |||
1976 | if (read(fd, bootSect, 512) != 512) { | ||
1977 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), | ||
1978 | "/boot/grub/stage1", strerror(errno)); | ||
1979 | return 1; | ||
1980 | } | ||
1981 | close(fd); | ||
1982 | |||
1983 | return checkDeviceBootloader(boot, bootSect); | ||
1984 | } | ||
1985 | |||
1986 | static char * getRootSpecifier(char * str) { | ||
1987 | char * idx, * rootspec = NULL; | ||
1988 | |||
1989 | if (*str == '(') { | ||
1990 | idx = rootspec = strdup(str); | ||
1991 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; | ||
1992 | *(++idx) = '\0'; | ||
1993 | } | ||
1994 | return rootspec; | ||
1995 | } | ||
1996 | |||
1997 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, | ||
1998 | const char * prefix, | ||
1999 | char * newKernelPath, char * newKernelTitle, | ||
2000 | char * newKernelArgs, char * newKernelInitrd, | ||
2001 | char * newMBKernel, char * newMBKernelArgs) { | ||
2002 | struct singleEntry * new; | ||
2003 | struct singleLine * newLine = NULL, * tmplLine = NULL, * lastLine = NULL; | ||
2004 | int needs; | ||
2005 | char * indent = NULL; | ||
2006 | char * rootspec = NULL; | ||
2007 | char * chptr; | ||
2008 | int i; | ||
2009 | enum lineType_e type; | ||
2010 | |||
2011 | if (!newKernelPath) return 0; | ||
2012 | |||
2013 | /* if the newKernelTitle is too long silently munge it into something | ||
2014 | * we can live with. truncating is first check, then we'll just mess with | ||
2015 | * it until it looks better */ | ||
2016 | if (config->cfi->maxTitleLength && | ||
2017 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { | ||
2018 | char * buf = alloca(config->cfi->maxTitleLength + 7); | ||
2019 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); | ||
2020 | int i = 1; | ||
2021 | |||
2022 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); | ||
2023 | while (findEntryByPath(config, buf, NULL, NULL)) { | ||
2024 | sprintf(numBuf, "%d", i++); | ||
2025 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); | ||
2026 | } | ||
2027 | |||
2028 | newKernelTitle = buf + 6; | ||
2029 | } | ||
2030 | |||
2031 | new = malloc(sizeof(*new)); | ||
2032 | new->skip = 0; | ||
2033 | new->multiboot = 0; | ||
2034 | new->next = config->entries; | ||
2035 | new->lines = NULL; | ||
2036 | config->entries = new; | ||
2037 | |||
2038 | /* copy/update from the template */ | ||
2039 | needs = KERNEL_KERNEL | KERNEL_INITRD | KERNEL_TITLE; | ||
2040 | if (newMBKernel) { | ||
2041 | needs |= KERNEL_MB; | ||
2042 | new->multiboot = 1; | ||
2043 | } | ||
2044 | |||
2045 | if (template) { | ||
2046 | for (tmplLine = template->lines; tmplLine; tmplLine = tmplLine->next) { | ||
2047 | /* remember the indention level; we may need it for new lines */ | ||
2048 | if (tmplLine->numElements) | ||
2049 | indent = tmplLine->indent; | ||
2050 | |||
2051 | /* skip comments */ | ||
2052 | chptr = tmplLine->indent; | ||
2053 | while (*chptr && isspace(*chptr)) chptr++; | ||
2054 | if (*chptr == '#') continue; | ||
2055 | |||
2056 | /* we don't need an initrd here */ | ||
2057 | if (tmplLine->type == LT_INITRD && !newKernelInitrd) continue; | ||
2058 | |||
2059 | if (tmplLine->type == LT_KERNEL && | ||
2060 | !template->multiboot && (needs & KERNEL_MB)) { | ||
2061 | struct singleLine *l; | ||
2062 | needs &= ~ KERNEL_MB; | ||
2063 | |||
2064 | l = addLine(new, config->cfi, LT_KERNEL, | ||
2065 | config->secondaryIndent, | ||
2066 | newMBKernel + strlen(prefix)); | ||
2067 | |||
2068 | tmplLine = lastLine; | ||
2069 | if (!new->lines) { | ||
2070 | new->lines = l; | ||
2071 | } else { | ||
2072 | newLine->next = l; | ||
2073 | newLine = l; | ||
2074 | } | ||
2075 | continue; | ||
2076 | } else if (tmplLine->type == LT_KERNEL && | ||
2077 | template->multiboot && !new->multiboot) { | ||
2078 | continue; /* don't need multiboot kernel here */ | ||
2079 | } | ||
2080 | |||
2081 | if (!new->lines) { | ||
2082 | newLine = malloc(sizeof(*newLine)); | ||
2083 | new->lines = newLine; | ||
2084 | } else { | ||
2085 | newLine->next = malloc(sizeof(*newLine)); | ||
2086 | newLine = newLine->next; | ||
2087 | } | ||
2088 | |||
2089 | |||
2090 | newLine->indent = strdup(tmplLine->indent); | ||
2091 | newLine->next = NULL; | ||
2092 | newLine->type = tmplLine->type; | ||
2093 | newLine->numElements = tmplLine->numElements; | ||
2094 | newLine->elements = malloc(sizeof(*newLine->elements) * | ||
2095 | newLine->numElements); | ||
2096 | for (i = 0; i < newLine->numElements; i++) { | ||
2097 | newLine->elements[i].item = strdup(tmplLine->elements[i].item); | ||
2098 | newLine->elements[i].indent = | ||
2099 | strdup(tmplLine->elements[i].indent); | ||
2100 | } | ||
2101 | |||
2102 | lastLine = tmplLine; | ||
2103 | if (tmplLine->type == LT_KERNEL && tmplLine->numElements >= 2) { | ||
2104 | char * repl; | ||
2105 | if (!template->multiboot) { | ||
2106 | needs &= ~KERNEL_KERNEL; | ||
2107 | repl = newKernelPath; | ||
2108 | } else { | ||
2109 | needs &= ~KERNEL_MB; | ||
2110 | repl = newMBKernel; | ||
2111 | } | ||
2112 | if (new->multiboot && !template->multiboot) { | ||
2113 | free(newLine->elements[0].item); | ||
2114 | newLine->elements[0].item = strdup("module"); | ||
2115 | newLine->type = LT_MBMODULE; | ||
2116 | } | ||
2117 | free(newLine->elements[1].item); | ||
2118 | rootspec = getRootSpecifier(tmplLine->elements[1].item); | ||
2119 | if (rootspec != NULL) { | ||
2120 | newLine->elements[1].item = sdupprintf("%s%s", | ||
2121 | rootspec, | ||
2122 | repl + | ||
2123 | strlen(prefix)); | ||
2124 | } else { | ||
2125 | newLine->elements[1].item = strdup(repl + | ||
2126 | strlen(prefix)); | ||
2127 | } | ||
2128 | } else if (tmplLine->type == LT_MBMODULE && | ||
2129 | tmplLine->numElements >= 2 && (needs & KERNEL_KERNEL)) { | ||
2130 | needs &= ~KERNEL_KERNEL; | ||
2131 | if (!new->multiboot && template->multiboot) { | ||
2132 | free(newLine->elements[0].item); | ||
2133 | newLine->elements[0].item = strdup("kernel"); | ||
2134 | newLine->type = LT_KERNEL; | ||
2135 | } | ||
2136 | free(newLine->elements[1].item); | ||
2137 | rootspec = getRootSpecifier(tmplLine->elements[1].item); | ||
2138 | if (rootspec != NULL) { | ||
2139 | newLine->elements[1].item = sdupprintf("%s%s", | ||
2140 | rootspec, | ||
2141 | newKernelPath + | ||
2142 | strlen(prefix)); | ||
2143 | } else { | ||
2144 | newLine->elements[1].item = strdup(newKernelPath + | ||
2145 | strlen(prefix)); | ||
2146 | } | ||
2147 | } else if (tmplLine->type == LT_INITRD && | ||
2148 | tmplLine->numElements >= 2) { | ||
2149 | needs &= ~KERNEL_INITRD; | ||
2150 | free(newLine->elements[1].item); | ||
2151 | if (new->multiboot && !template->multiboot) { | ||
2152 | free(newLine->elements[0].item); | ||
2153 | newLine->elements[0].item = strdup("module"); | ||
2154 | newLine->type = LT_MBMODULE; | ||
2155 | } | ||
2156 | rootspec = getRootSpecifier(tmplLine->elements[1].item); | ||
2157 | if (rootspec != NULL) { | ||
2158 | newLine->elements[1].item = sdupprintf("%s%s", | ||
2159 | rootspec, | ||
2160 | newKernelInitrd + | ||
2161 | strlen(prefix)); | ||
2162 | } else { | ||
2163 | newLine->elements[1].item = strdup(newKernelInitrd + | ||
2164 | strlen(prefix)); | ||
2165 | } | ||
2166 | } else if (tmplLine->type == LT_MBMODULE && | ||
2167 | tmplLine->numElements >= 2 && (needs & KERNEL_INITRD)) { | ||
2168 | needs &= ~KERNEL_INITRD; | ||
2169 | if (!new->multiboot && template->multiboot) { | ||
2170 | free(newLine->elements[0].item); | ||
2171 | newLine->elements[0].item = strdup("initrd"); | ||
2172 | newLine->type = LT_INITRD; | ||
2173 | } | ||
2174 | free(newLine->elements[1].item); | ||
2175 | rootspec = getRootSpecifier(tmplLine->elements[1].item); | ||
2176 | if (rootspec != NULL) { | ||
2177 | newLine->elements[1].item = sdupprintf("%s%s", | ||
2178 | rootspec, | ||
2179 | newKernelInitrd + | ||
2180 | strlen(prefix)); | ||
2181 | } else { | ||
2182 | newLine->elements[1].item = strdup(newKernelInitrd + | ||
2183 | strlen(prefix)); | ||
2184 | } | ||
2185 | } else if (tmplLine->type == LT_TITLE && | ||
2186 | tmplLine->numElements >= 2) { | ||
2187 | needs &= ~KERNEL_TITLE; | ||
2188 | |||
2189 | for (i = 1; i < newLine->numElements; i++) { | ||
2190 | free(newLine->elements[i].item); | ||
2191 | free(newLine->elements[i].indent); | ||
2192 | } | ||
2193 | |||
2194 | newLine->elements[1].item = strdup(newKernelTitle); | ||
2195 | newLine->elements[1].indent = strdup(""); | ||
2196 | newLine->numElements = 2; | ||
2197 | } else if (tmplLine->type == LT_TITLE && | ||
2198 | config->cfi->titleBracketed && | ||
2199 | tmplLine->numElements == 1) { | ||
2200 | needs &= ~KERNEL_TITLE; | ||
2201 | free(newLine->elements[0].item); | ||
2202 | free(newLine->elements[0].indent); | ||
2203 | newLine->elements = malloc(sizeof(*newLine->elements) * | ||
2204 | newLine->numElements); | ||
2205 | |||
2206 | newLine->elements[0].item = malloc(strlen(newKernelTitle) + 3); | ||
2207 | sprintf(newLine->elements[0].item, "[%s]", newKernelTitle); | ||
2208 | newLine->elements[0].indent = strdup(""); | ||
2209 | newLine->numElements = 1; | ||
2210 | } | ||
2211 | } | ||
2212 | } else { | ||
2213 | for (i = 0; config->cfi->keywords[i].key; i++) { | ||
2214 | if ((config->cfi->keywords[i].type == config->cfi->entrySeparator) || (config->cfi->keywords[i].type == LT_OTHER)) | ||
2215 | break; | ||
2216 | } | ||
2217 | |||
2218 | switch (config->cfi->keywords[i].type) { | ||
2219 | case LT_KERNEL: needs &= ~KERNEL_KERNEL, | ||
2220 | chptr = newKernelPath + strlen(prefix); | ||
2221 | type = LT_KERNEL; break; | ||
2222 | case LT_TITLE: needs &= ~KERNEL_TITLE, chptr = newKernelTitle; | ||
2223 | type = LT_TITLE; break; | ||
2224 | default: | ||
2225 | /* zipl strikes again */ | ||
2226 | if (config->cfi->titleBracketed) { | ||
2227 | needs &= ~KERNEL_TITLE; | ||
2228 | chptr = newKernelTitle; | ||
2229 | type = LT_TITLE; | ||
2230 | break; | ||
2231 | } else { | ||
2232 | abort(); | ||
2233 | } | ||
2234 | } | ||
2235 | |||
2236 | newLine = addLine(new, config->cfi, type, config->primaryIndent, chptr); | ||
2237 | new->lines = newLine; | ||
2238 | } | ||
2239 | |||
2240 | if (new->multiboot) { | ||
2241 | if (needs & KERNEL_MB) | ||
2242 | newLine = addLine(new, config->cfi, LT_KERNEL, | ||
2243 | config->secondaryIndent, | ||
2244 | newMBKernel + strlen(prefix)); | ||
2245 | if (needs & KERNEL_KERNEL) | ||
2246 | newLine = addLine(new, config->cfi, LT_MBMODULE, | ||
2247 | config->secondaryIndent, | ||
2248 | newKernelPath + strlen(prefix)); | ||
2249 | /* don't need to check for title as it's guaranteed to have been | ||
2250 | * done as we only do multiboot with grub which uses title as | ||
2251 | * a separator */ | ||
2252 | if (needs & KERNEL_INITRD && newKernelInitrd) | ||
2253 | newLine = addLine(new, config->cfi, LT_MBMODULE, | ||
2254 | config->secondaryIndent, | ||
2255 | newKernelInitrd + strlen(prefix)); | ||
2256 | } else { | ||
2257 | if (needs & KERNEL_KERNEL) | ||
2258 | newLine = addLine(new, config->cfi, LT_KERNEL, | ||
2259 | config->secondaryIndent, | ||
2260 | newKernelPath + strlen(prefix)); | ||
2261 | if (needs & KERNEL_TITLE) | ||
2262 | newLine = addLine(new, config->cfi, LT_TITLE, | ||
2263 | config->secondaryIndent, | ||
2264 | newKernelTitle); | ||
2265 | if (needs & KERNEL_INITRD && newKernelInitrd) | ||
2266 | newLine = addLine(new, config->cfi, LT_INITRD, | ||
2267 | config->secondaryIndent, | ||
2268 | newKernelInitrd + strlen(prefix)); | ||
2269 | } | ||
2270 | |||
2271 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, | ||
2272 | newMBKernelArgs, NULL)) return 1; | ||
2273 | |||
2274 | return 0; | ||
2275 | } | ||
2276 | |||
2277 | int main(int argc, const char ** argv) { | ||
2278 | poptContext optCon; | ||
2279 | char * grubConfig = NULL; | ||
2280 | char * outputFile = NULL; | ||
2281 | int arg = 0; | ||
2282 | int flags = 0; | ||
2283 | int badImageOkay = 0; | ||
2284 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; | ||
2285 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; | ||
2286 | int bootloaderProbe = 0; | ||
2287 | char * updateKernelPath = NULL; | ||
2288 | char * newKernelPath = NULL; | ||
2289 | char * removeKernelPath = NULL; | ||
2290 | char * newKernelArgs = NULL; | ||
2291 | char * newKernelInitrd = NULL; | ||
2292 | char * newKernelTitle = NULL; | ||
2293 | char * newKernelVersion = NULL; | ||
2294 | char * newMBKernel = NULL; | ||
2295 | char * newMBKernelArgs = NULL; | ||
2296 | char * removeMBKernelArgs = NULL; | ||
2297 | char * removeMBKernel = NULL; | ||
2298 | char * bootPrefix = NULL; | ||
2299 | char * defaultKernel = NULL; | ||
2300 | char * removeArgs = NULL; | ||
2301 | char * kernelInfo = NULL; | ||
2302 | const char * chptr = NULL; | ||
2303 | struct configFileInfo * cfi = NULL; | ||
2304 | struct grubConfig * config; | ||
2305 | struct singleEntry * template = NULL; | ||
2306 | int copyDefault = 0, makeDefault = 0; | ||
2307 | int displayDefault = 0; | ||
2308 | struct poptOption options[] = { | ||
2309 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, | ||
2310 | _("add an entry for the specified kernel"), _("kernel-path") }, | ||
2311 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, | ||
2312 | _("add an entry for the specified multiboot kernel"), NULL }, | ||
2313 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, | ||
2314 | _("default arguments for the new kernel or new arguments for " | ||
2315 | "kernel being updated"), _("args") }, | ||
2316 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, | ||
2317 | _("default arguments for the new multiboot kernel or " | ||
2318 | "new arguments for multiboot kernel being updated"), NULL }, | ||
2319 | { "bad-image-okay", 0, 0, &badImageOkay, 0, | ||
2320 | _("don't sanity check images in boot entries (for testing only)"), | ||
2321 | NULL }, | ||
2322 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, | ||
2323 | _("filestystem which contains /boot directory (for testing only)"), | ||
2324 | _("bootfs") }, | ||
2325 | #if defined(__i386__) || defined(__x86_64__) | ||
2326 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, | ||
2327 | _("check if lilo is installed on lilo.conf boot sector") }, | ||
2328 | #endif | ||
2329 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, | ||
2330 | _("path to grub config file to update (\"-\" for stdin)"), | ||
2331 | _("path") }, | ||
2332 | { "copy-default", 0, 0, ©Default, 0, | ||
2333 | _("use the default boot entry as a template for the new entry " | ||
2334 | "being added; if the default is not a linux image, or if " | ||
2335 | "the kernel referenced by the default image does not exist, " | ||
2336 | "the first linux entry whose kernel does exist is used as the " | ||
2337 | "template"), NULL }, | ||
2338 | { "default-kernel", 0, 0, &displayDefault, 0, | ||
2339 | _("display the path of the default kernel") }, | ||
2340 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, | ||
2341 | _("configure elilo bootloader") }, | ||
2342 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, | ||
2343 | _("configure grub bootloader") }, | ||
2344 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, | ||
2345 | _("display boot information for specified kernel"), | ||
2346 | _("kernel-path") }, | ||
2347 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, | ||
2348 | _("initrd image for the new kernel"), _("initrd-path") }, | ||
2349 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, | ||
2350 | _("configure lilo bootloader") }, | ||
2351 | { "make-default", 0, 0, &makeDefault, 0, | ||
2352 | _("make the newly added entry the default boot entry"), NULL }, | ||
2353 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, | ||
2354 | _("path to output updated config file (\"-\" for stdout)"), | ||
2355 | _("path") }, | ||
2356 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, | ||
2357 | _("remove kernel arguments"), NULL }, | ||
2358 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, | ||
2359 | _("remove multiboot kernel arguments"), NULL }, | ||
2360 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, | ||
2361 | _("remove all entries for the specified kernel"), | ||
2362 | _("kernel-path") }, | ||
2363 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, | ||
2364 | _("remove all entries for the specified multiboot kernel"), NULL }, | ||
2365 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, | ||
2366 | _("make the first entry referencing the specified kernel " | ||
2367 | "the default"), _("kernel-path") }, | ||
2368 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, | ||
2369 | _("configure silo bootloader") }, | ||
2370 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, | ||
2371 | _("title to use for the new kernel entry"), _("entry-title") }, | ||
2372 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, | ||
2373 | _("updated information for the specified kernel"), | ||
2374 | _("kernel-path") }, | ||
2375 | { "version", 'v', 0, NULL, 'v', | ||
2376 | _("print the version of this program and exit"), NULL }, | ||
2377 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, | ||
2378 | _("configure yaboot bootloader") }, | ||
2379 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, | ||
2380 | _("configure zipl bootloader") }, | ||
2381 | POPT_AUTOHELP | ||
2382 | { 0, 0, 0, 0, 0 } | ||
2383 | }; | ||
2384 | |||
2385 | optCon = poptGetContext("grubby", argc, argv, options, 0); | ||
2386 | poptReadDefaultConfig(optCon, 1); | ||
2387 | |||
2388 | while ((arg = poptGetNextOpt(optCon)) >= 0) { | ||
2389 | switch (arg) { | ||
2390 | case 'v': | ||
2391 | printf("grubby version %s\n", VERSION); | ||
2392 | exit(0); | ||
2393 | break; | ||
2394 | } | ||
2395 | } | ||
2396 | |||
2397 | if (arg < -1) { | ||
2398 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), | ||
2399 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), | ||
2400 | poptStrerror(arg)); | ||
2401 | return 1; | ||
2402 | } | ||
2403 | |||
2404 | if ((chptr = poptGetArg(optCon))) { | ||
2405 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); | ||
2406 | return 1; | ||
2407 | } | ||
2408 | |||
2409 | if ((configureLilo + configureGrub + configureELilo + | ||
2410 | configureYaboot + configureSilo + configureZipl) > 1) { | ||
2411 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); | ||
2412 | return 1; | ||
2413 | } else if (bootloaderProbe && grubConfig) { | ||
2414 | fprintf(stderr, | ||
2415 | _("grubby: cannot specify config file with --bootloader-probe\n")); | ||
2416 | return 1; | ||
2417 | } else if (configureLilo) { | ||
2418 | cfi = &liloConfigType; | ||
2419 | } else if (configureGrub) { | ||
2420 | cfi = &grubConfigType; | ||
2421 | } else if (configureELilo) { | ||
2422 | cfi = &eliloConfigType; | ||
2423 | } else if (configureYaboot) { | ||
2424 | cfi = &yabootConfigType; | ||
2425 | } else if (configureSilo) { | ||
2426 | cfi = &siloConfigType; | ||
2427 | } else if (configureZipl) { | ||
2428 | cfi = &ziplConfigType; | ||
2429 | } | ||
2430 | |||
2431 | if (!cfi) { | ||
2432 | #ifdef __ia64__ | ||
2433 | cfi = &eliloConfigType; | ||
2434 | #elif __powerpc__ | ||
2435 | cfi = &yabootConfigType; | ||
2436 | #elif __sparc__ | ||
2437 | cfi = &siloConfigType; | ||
2438 | #elif __s390__ | ||
2439 | cfi = &ziplConfigType; | ||
2440 | #elif __s390x__ | ||
2441 | cfi = &ziplConfigtype; | ||
2442 | #else | ||
2443 | cfi = &grubConfigType; | ||
2444 | #endif | ||
2445 | } | ||
2446 | |||
2447 | if (!grubConfig) | ||
2448 | grubConfig = cfi->defaultConfig; | ||
2449 | |||
2450 | if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion || | ||
2451 | newKernelPath || removeKernelPath || makeDefault || | ||
2452 | defaultKernel)) { | ||
2453 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " | ||
2454 | "specified option")); | ||
2455 | return 1; | ||
2456 | } | ||
2457 | |||
2458 | if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath || | ||
2459 | removeKernelPath)) { | ||
2460 | fprintf(stderr, _("grubby: --default-kernel and --info may not " | ||
2461 | "be used when adding or removing kernels\n")); | ||
2462 | return 1; | ||
2463 | } | ||
2464 | |||
2465 | if (newKernelPath && !newKernelTitle) { | ||
2466 | fprintf(stderr, _("grubby: kernel title must be specified\n")); | ||
2467 | return 1; | ||
2468 | } else if (!newKernelPath && (newKernelTitle || newKernelInitrd || | ||
2469 | newKernelInitrd || copyDefault || | ||
2470 | makeDefault)) { | ||
2471 | fprintf(stderr, _("grubby: kernel path expected\n")); | ||
2472 | return 1; | ||
2473 | } | ||
2474 | |||
2475 | if (newKernelPath && updateKernelPath) { | ||
2476 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" | ||
2477 | "not be used together")); | ||
2478 | return 1; | ||
2479 | } | ||
2480 | |||
2481 | if (makeDefault && defaultKernel) { | ||
2482 | fprintf(stderr, _("grubby: --make-default and --default-kernel " | ||
2483 | "may not be used together\n")); | ||
2484 | return 1; | ||
2485 | } else if (defaultKernel && removeKernelPath && | ||
2486 | !strcmp(defaultKernel, removeKernelPath)) { | ||
2487 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); | ||
2488 | return 1; | ||
2489 | } else if (defaultKernel && newKernelPath && | ||
2490 | !strcmp(defaultKernel, newKernelPath)) { | ||
2491 | makeDefault = 1; | ||
2492 | defaultKernel = NULL; | ||
2493 | } | ||
2494 | |||
2495 | if (!strcmp(grubConfig, "-") && !outputFile) { | ||
2496 | fprintf(stderr, _("grubby: output file must be specified if stdin " | ||
2497 | "is used\n")); | ||
2498 | return 1; | ||
2499 | } | ||
2500 | |||
2501 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel | ||
2502 | && !kernelInfo && !bootloaderProbe && !updateKernelPath | ||
2503 | && !removeMBKernel) { | ||
2504 | fprintf(stderr, _("grubby: no action specified\n")); | ||
2505 | return 1; | ||
2506 | } | ||
2507 | |||
2508 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; | ||
2509 | |||
2510 | if (cfi->needsBootPrefix) { | ||
2511 | if (!bootPrefix) { | ||
2512 | bootPrefix = findBootPrefix(); | ||
2513 | if (!bootPrefix) return 1; | ||
2514 | } else { | ||
2515 | /* this shouldn't end with a / */ | ||
2516 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') | ||
2517 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; | ||
2518 | } | ||
2519 | } else { | ||
2520 | bootPrefix = ""; | ||
2521 | } | ||
2522 | |||
2523 | if (bootloaderProbe) { | ||
2524 | int lrc = 0, grc = 0; | ||
2525 | struct grubConfig * lconfig, * gconfig; | ||
2526 | |||
2527 | if (!access(grubConfigType.defaultConfig, F_OK)) { | ||
2528 | gconfig = readConfig(grubConfigType.defaultConfig, &grubConfigType); | ||
2529 | if (!gconfig) | ||
2530 | grc = 1; | ||
2531 | else | ||
2532 | grc = checkForGrub(gconfig); | ||
2533 | } | ||
2534 | |||
2535 | if (!access(liloConfigType.defaultConfig, F_OK)) { | ||
2536 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); | ||
2537 | if (!lconfig) | ||
2538 | lrc = 1; | ||
2539 | else | ||
2540 | lrc = checkForLilo(lconfig); | ||
2541 | } | ||
2542 | |||
2543 | if (lrc == 1 || grc == 1) return 1; | ||
2544 | |||
2545 | if (lrc == 2) printf("lilo\n"); | ||
2546 | if (grc == 2) printf("grub\n"); | ||
2547 | |||
2548 | return 0; | ||
2549 | } | ||
2550 | |||
2551 | config = readConfig(grubConfig, cfi); | ||
2552 | if (!config) return 1; | ||
2553 | |||
2554 | if (displayDefault) { | ||
2555 | struct singleLine * line; | ||
2556 | struct singleEntry * entry; | ||
2557 | char * rootspec; | ||
2558 | |||
2559 | if (config->defaultImage == -1) return 0; | ||
2560 | entry = findEntryByIndex(config, config->defaultImage); | ||
2561 | if (!entry) return 0; | ||
2562 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; | ||
2563 | |||
2564 | line = entry->lines; | ||
2565 | while (line && line->type != LT_KERNEL) line = line->next; | ||
2566 | if (!line) return 0; | ||
2567 | |||
2568 | rootspec = getRootSpecifier(line->elements[1].item); | ||
2569 | printf("%s%s\n", bootPrefix, line->elements[1].item + | ||
2570 | ((rootspec != NULL) ? strlen(rootspec) : 0)); | ||
2571 | |||
2572 | return 0; | ||
2573 | } else if (kernelInfo) | ||
2574 | return displayInfo(config, kernelInfo, bootPrefix); | ||
2575 | |||
2576 | if (copyDefault) { | ||
2577 | template = findTemplate(config, bootPrefix, NULL, 0, flags); | ||
2578 | if (!template) return 1; | ||
2579 | } | ||
2580 | |||
2581 | markRemovedImage(config, removeKernelPath, bootPrefix); | ||
2582 | markRemovedImage(config, removeMBKernel, bootPrefix); | ||
2583 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, | ||
2584 | bootPrefix, flags); | ||
2585 | setFallbackImage(config, newKernelPath != NULL); | ||
2586 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, | ||
2587 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; | ||
2588 | if (addNewKernel(config, template, bootPrefix, newKernelPath, | ||
2589 | newKernelTitle, newKernelArgs, newKernelInitrd, | ||
2590 | newMBKernel, newMBKernelArgs)) return 1; | ||
2591 | |||
2592 | |||
2593 | if (numEntries(config) == 0) { | ||
2594 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " | ||
2595 | "Not writing out new config.\n")); | ||
2596 | return 1; | ||
2597 | } | ||
2598 | |||
2599 | if (!outputFile) | ||
2600 | outputFile = grubConfig; | ||
2601 | |||
2602 | return writeConfig(config, outputFile, bootPrefix); | ||
2603 | } |