Annotation of /trunk/grubby/grubby.c
Parent Directory | Revision Log
Revision 1694 -
(hide annotations)
(download)
Fri Feb 17 23:23:07 2012 UTC (12 years, 8 months ago) by niro
File MIME type: text/plain
File size: 88534 byte(s)
Fri Feb 17 23:23:07 2012 UTC (12 years, 8 months ago) by niro
File MIME type: text/plain
File size: 88534 byte(s)
Tweak some make options. Some functions are only used in dbgPrintf() arguments. As such, errors/warnings on unused functions need to be disabled. Also, use -std=gnu99. Also, add a debug target.
1 | niro | 914 | /* |
2 | * grubby.c | ||
3 | * | ||
4 | * Copyright (C) 2001-2008 Red Hat, Inc. | ||
5 | * All rights reserved. | ||
6 | * | ||
7 | * This program is free software; you can redistribute it and/or modify | ||
8 | * it under the terms of the GNU General Public License as published by | ||
9 | * the Free Software Foundation; either version 2 of the License, or | ||
10 | * (at your option) any later version. | ||
11 | * | ||
12 | * This program is distributed in the hope that it will be useful, | ||
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | ||
15 | * GNU General Public License for more details. | ||
16 | * | ||
17 | * You should have received a copy of the GNU General Public License | ||
18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | ||
19 | */ | ||
20 | niro | 532 | |
21 | niro | 914 | #ifndef _GNU_SOURCE |
22 | #define _GNU_SOURCE | ||
23 | #endif | ||
24 | niro | 532 | #include <ctype.h> |
25 | #include <errno.h> | ||
26 | #include <fcntl.h> | ||
27 | #include <mntent.h> | ||
28 | #include <popt.h> | ||
29 | #include <stdarg.h> | ||
30 | #include <stdlib.h> | ||
31 | #include <string.h> | ||
32 | #include <sys/stat.h> | ||
33 | #include <unistd.h> | ||
34 | niro | 914 | #include <libgen.h> |
35 | #include <execinfo.h> | ||
36 | #include <signal.h> | ||
37 | #include <blkid/blkid.h> | ||
38 | niro | 532 | |
39 | niro | 1694 | #ifndef DEBUG |
40 | niro | 914 | #define DEBUG 0 |
41 | niro | 1694 | #endif |
42 | niro | 532 | |
43 | niro | 914 | #if DEBUG |
44 | #define dbgPrintf(format, args...) fprintf(stderr, format , ## args) | ||
45 | #else | ||
46 | #define dbgPrintf(format, args...) | ||
47 | #endif | ||
48 | |||
49 | niro | 532 | #define _(A) (A) |
50 | |||
51 | niro | 914 | #define MAX_EXTRA_INITRDS 16 /* code segment checked by --bootloader-probe */ |
52 | niro | 532 | #define CODE_SEG_SIZE 128 /* code segment checked by --bootloader-probe */ |
53 | |||
54 | /* comments get lumped in with indention */ | ||
55 | struct lineElement { | ||
56 | char * item; | ||
57 | char * indent; | ||
58 | }; | ||
59 | |||
60 | niro | 914 | enum lineType_e { |
61 | LT_WHITESPACE = 1 << 0, | ||
62 | LT_TITLE = 1 << 1, | ||
63 | LT_KERNEL = 1 << 2, | ||
64 | LT_INITRD = 1 << 3, | ||
65 | LT_HYPER = 1 << 4, | ||
66 | LT_DEFAULT = 1 << 5, | ||
67 | LT_MBMODULE = 1 << 6, | ||
68 | LT_ROOT = 1 << 7, | ||
69 | LT_FALLBACK = 1 << 8, | ||
70 | LT_KERNELARGS = 1 << 9, | ||
71 | LT_BOOT = 1 << 10, | ||
72 | LT_BOOTROOT = 1 << 11, | ||
73 | LT_LBA = 1 << 12, | ||
74 | LT_OTHER = 1 << 13, | ||
75 | LT_GENERIC = 1 << 14, | ||
76 | LT_UNKNOWN = 1 << 15, | ||
77 | }; | ||
78 | niro | 532 | |
79 | struct singleLine { | ||
80 | char * indent; | ||
81 | int numElements; | ||
82 | struct lineElement * elements; | ||
83 | struct singleLine * next; | ||
84 | enum lineType_e type; | ||
85 | }; | ||
86 | |||
87 | struct singleEntry { | ||
88 | struct singleLine * lines; | ||
89 | int skip; | ||
90 | int multiboot; | ||
91 | struct singleEntry * next; | ||
92 | }; | ||
93 | |||
94 | #define GRUBBY_BADIMAGE_OKAY (1 << 0) | ||
95 | |||
96 | #define GRUB_CONFIG_NO_DEFAULT (1 << 0) /* don't write out default=0 */ | ||
97 | |||
98 | niro | 914 | /* These defines are (only) used in addNewKernel() */ |
99 | #define NEED_KERNEL (1 << 0) | ||
100 | #define NEED_INITRD (1 << 1) | ||
101 | #define NEED_TITLE (1 << 2) | ||
102 | #define NEED_ARGS (1 << 3) | ||
103 | #define NEED_MB (1 << 4) | ||
104 | niro | 532 | |
105 | #define MAIN_DEFAULT (1 << 0) | ||
106 | #define DEFAULT_SAVED -2 | ||
107 | |||
108 | struct keywordTypes { | ||
109 | char * key; | ||
110 | enum lineType_e type; | ||
111 | char nextChar; | ||
112 | niro | 914 | char separatorChar; |
113 | }; | ||
114 | niro | 532 | |
115 | struct configFileInfo { | ||
116 | char * defaultConfig; | ||
117 | struct keywordTypes * keywords; | ||
118 | int defaultIsIndex; | ||
119 | int defaultSupportSaved; | ||
120 | niro | 1693 | enum lineType_e entryStart; |
121 | niro | 532 | int needsBootPrefix; |
122 | int argsInQuotes; | ||
123 | int maxTitleLength; | ||
124 | int titleBracketed; | ||
125 | niro | 914 | int mbHyperFirst; |
126 | int mbInitRdIsModule; | ||
127 | int mbConcatArgs; | ||
128 | int mbAllowExtraInitRds; | ||
129 | niro | 532 | }; |
130 | |||
131 | struct keywordTypes grubKeywords[] = { | ||
132 | { "title", LT_TITLE, ' ' }, | ||
133 | { "root", LT_BOOTROOT, ' ' }, | ||
134 | { "default", LT_DEFAULT, ' ' }, | ||
135 | { "fallback", LT_FALLBACK, ' ' }, | ||
136 | { "kernel", LT_KERNEL, ' ' }, | ||
137 | niro | 914 | { "initrd", LT_INITRD, ' ', ' ' }, |
138 | niro | 532 | { "module", LT_MBMODULE, ' ' }, |
139 | niro | 914 | { "kernel", LT_HYPER, ' ' }, |
140 | niro | 532 | { NULL, 0, 0 }, |
141 | }; | ||
142 | |||
143 | struct configFileInfo grubConfigType = { | ||
144 | niro | 1692 | .defaultConfig = "/boot/grub/grub.conf", |
145 | .keywords = grubKeywords, | ||
146 | .defaultIsIndex = 1, | ||
147 | .defaultSupportSaved = 1, | ||
148 | niro | 1693 | .entryStart = LT_TITLE, |
149 | niro | 1692 | .needsBootPrefix = 1, |
150 | .mbHyperFirst = 1, | ||
151 | .mbInitRdIsModule = 1, | ||
152 | .mbAllowExtraInitRds = 1, | ||
153 | niro | 532 | }; |
154 | |||
155 | struct keywordTypes yabootKeywords[] = { | ||
156 | { "label", LT_TITLE, '=' }, | ||
157 | { "root", LT_ROOT, '=' }, | ||
158 | { "default", LT_DEFAULT, '=' }, | ||
159 | { "image", LT_KERNEL, '=' }, | ||
160 | { "bsd", LT_GENERIC, '=' }, | ||
161 | { "macos", LT_GENERIC, '=' }, | ||
162 | { "macosx", LT_GENERIC, '=' }, | ||
163 | { "magicboot", LT_GENERIC, '=' }, | ||
164 | { "darwin", LT_GENERIC, '=' }, | ||
165 | { "timeout", LT_GENERIC, '=' }, | ||
166 | { "install", LT_GENERIC, '=' }, | ||
167 | { "fstype", LT_GENERIC, '=' }, | ||
168 | { "hfstype", LT_GENERIC, '=' }, | ||
169 | { "delay", LT_GENERIC, '=' }, | ||
170 | { "defaultos", LT_GENERIC, '=' }, | ||
171 | { "init-message", LT_GENERIC, '=' }, | ||
172 | { "enablecdboot", LT_GENERIC, ' ' }, | ||
173 | { "enableofboot", LT_GENERIC, ' ' }, | ||
174 | { "enablenetboot", LT_GENERIC, ' ' }, | ||
175 | { "nonvram", LT_GENERIC, ' ' }, | ||
176 | { "hide", LT_GENERIC, ' ' }, | ||
177 | { "protect", LT_GENERIC, ' ' }, | ||
178 | { "nobless", LT_GENERIC, ' ' }, | ||
179 | { "nonvram", LT_GENERIC, ' ' }, | ||
180 | { "brokenosx", LT_GENERIC, ' ' }, | ||
181 | { "usemount", LT_GENERIC, ' ' }, | ||
182 | { "mntpoint", LT_GENERIC, '=' }, | ||
183 | { "partition", LT_GENERIC, '=' }, | ||
184 | { "device", LT_GENERIC, '=' }, | ||
185 | { "fstype", LT_GENERIC, '=' }, | ||
186 | niro | 914 | { "initrd", LT_INITRD, '=', ';' }, |
187 | niro | 532 | { "append", LT_KERNELARGS, '=' }, |
188 | { "boot", LT_BOOT, '=' }, | ||
189 | { "lba", LT_LBA, ' ' }, | ||
190 | { NULL, 0, 0 }, | ||
191 | }; | ||
192 | |||
193 | struct keywordTypes liloKeywords[] = { | ||
194 | { "label", LT_TITLE, '=' }, | ||
195 | { "root", LT_ROOT, '=' }, | ||
196 | { "default", LT_DEFAULT, '=' }, | ||
197 | { "image", LT_KERNEL, '=' }, | ||
198 | { "other", LT_OTHER, '=' }, | ||
199 | { "initrd", LT_INITRD, '=' }, | ||
200 | { "append", LT_KERNELARGS, '=' }, | ||
201 | { "boot", LT_BOOT, '=' }, | ||
202 | { "lba", LT_LBA, ' ' }, | ||
203 | { NULL, 0, 0 }, | ||
204 | }; | ||
205 | |||
206 | niro | 914 | struct keywordTypes eliloKeywords[] = { |
207 | { "label", LT_TITLE, '=' }, | ||
208 | { "root", LT_ROOT, '=' }, | ||
209 | { "default", LT_DEFAULT, '=' }, | ||
210 | { "image", LT_KERNEL, '=' }, | ||
211 | { "initrd", LT_INITRD, '=' }, | ||
212 | { "append", LT_KERNELARGS, '=' }, | ||
213 | { "vmm", LT_HYPER, '=' }, | ||
214 | { NULL, 0, 0 }, | ||
215 | }; | ||
216 | |||
217 | niro | 532 | struct keywordTypes siloKeywords[] = { |
218 | { "label", LT_TITLE, '=' }, | ||
219 | { "root", LT_ROOT, '=' }, | ||
220 | { "default", LT_DEFAULT, '=' }, | ||
221 | { "image", LT_KERNEL, '=' }, | ||
222 | { "other", LT_OTHER, '=' }, | ||
223 | { "initrd", LT_INITRD, '=' }, | ||
224 | { "append", LT_KERNELARGS, '=' }, | ||
225 | { "boot", LT_BOOT, '=' }, | ||
226 | { NULL, 0, 0 }, | ||
227 | }; | ||
228 | |||
229 | struct keywordTypes ziplKeywords[] = { | ||
230 | { "target", LT_BOOTROOT, '=' }, | ||
231 | { "image", LT_KERNEL, '=' }, | ||
232 | { "ramdisk", LT_INITRD, '=' }, | ||
233 | { "parameters", LT_KERNELARGS, '=' }, | ||
234 | { "default", LT_DEFAULT, '=' }, | ||
235 | { NULL, 0, 0 }, | ||
236 | }; | ||
237 | |||
238 | niro | 914 | struct keywordTypes extlinuxKeywords[] = { |
239 | { "label", LT_TITLE, ' ' }, | ||
240 | { "root", LT_ROOT, ' ' }, | ||
241 | { "default", LT_DEFAULT, ' ' }, | ||
242 | { "kernel", LT_KERNEL, ' ' }, | ||
243 | { "initrd", LT_INITRD, ' ', ',' }, | ||
244 | { "append", LT_KERNELARGS, ' ' }, | ||
245 | { "prompt", LT_UNKNOWN, ' ' }, | ||
246 | { NULL, 0, 0 }, | ||
247 | }; | ||
248 | int useextlinuxmenu; | ||
249 | niro | 532 | struct configFileInfo eliloConfigType = { |
250 | niro | 1692 | .defaultConfig = "/boot/efi/EFI/redhat/elilo.conf", |
251 | .keywords = eliloKeywords, | ||
252 | niro | 1693 | .entryStart = LT_KERNEL, |
253 | niro | 1692 | .needsBootPrefix = 1, |
254 | .argsInQuotes = 1, | ||
255 | .mbConcatArgs = 1, | ||
256 | niro | 532 | }; |
257 | |||
258 | struct configFileInfo liloConfigType = { | ||
259 | niro | 1692 | .defaultConfig = "/etc/lilo.conf", |
260 | .keywords = liloKeywords, | ||
261 | niro | 1693 | .entryStart = LT_KERNEL, |
262 | niro | 1692 | .argsInQuotes = 1, |
263 | .maxTitleLength = 15, | ||
264 | niro | 532 | }; |
265 | |||
266 | struct configFileInfo yabootConfigType = { | ||
267 | niro | 1692 | .defaultConfig = "/etc/yaboot.conf", |
268 | .keywords = yabootKeywords, | ||
269 | niro | 1693 | .entryStart = LT_KERNEL, |
270 | niro | 1692 | .needsBootPrefix = 1, |
271 | .argsInQuotes = 1, | ||
272 | .maxTitleLength = 15, | ||
273 | .mbAllowExtraInitRds = 1, | ||
274 | niro | 532 | }; |
275 | |||
276 | struct configFileInfo siloConfigType = { | ||
277 | niro | 1692 | .defaultConfig = "/etc/silo.conf", |
278 | .keywords = siloKeywords, | ||
279 | niro | 1693 | .entryStart = LT_KERNEL, |
280 | niro | 1692 | .needsBootPrefix = 1, |
281 | .argsInQuotes = 1, | ||
282 | .maxTitleLength = 15, | ||
283 | niro | 532 | }; |
284 | |||
285 | struct configFileInfo ziplConfigType = { | ||
286 | niro | 1692 | .defaultConfig = "/etc/zipl.conf", |
287 | .keywords = ziplKeywords, | ||
288 | niro | 1693 | .entryStart = LT_TITLE, |
289 | niro | 1692 | .argsInQuotes = 1, |
290 | .titleBracketed = 1, | ||
291 | niro | 532 | }; |
292 | |||
293 | niro | 914 | struct configFileInfo extlinuxConfigType = { |
294 | niro | 1692 | .defaultConfig = "/boot/extlinux/extlinux.conf", |
295 | .keywords = extlinuxKeywords, | ||
296 | niro | 1693 | .entryStart = LT_TITLE, |
297 | niro | 1692 | .needsBootPrefix = 1, |
298 | .maxTitleLength = 255, | ||
299 | .mbAllowExtraInitRds = 1, | ||
300 | niro | 914 | }; |
301 | |||
302 | niro | 532 | struct grubConfig { |
303 | struct singleLine * theLines; | ||
304 | struct singleEntry * entries; | ||
305 | char * primaryIndent; | ||
306 | char * secondaryIndent; | ||
307 | int defaultImage; /* -1 if none specified -- this value is | ||
308 | * written out, overriding original */ | ||
309 | int fallbackImage; /* just like defaultImage */ | ||
310 | int flags; | ||
311 | struct configFileInfo * cfi; | ||
312 | }; | ||
313 | |||
314 | niro | 1156 | blkid_cache blkid; |
315 | |||
316 | niro | 532 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index); |
317 | struct singleEntry * findEntryByPath(struct grubConfig * cfg, | ||
318 | const char * path, const char * prefix, | ||
319 | int * index); | ||
320 | static int readFile(int fd, char ** bufPtr); | ||
321 | static void lineInit(struct singleLine * line); | ||
322 | niro | 914 | struct singleLine * lineDup(struct singleLine * line); |
323 | niro | 532 | static void lineFree(struct singleLine * line); |
324 | static int lineWrite(FILE * out, struct singleLine * line, | ||
325 | struct configFileInfo * cfi); | ||
326 | static int getNextLine(char ** bufPtr, struct singleLine * line, | ||
327 | struct configFileInfo * cfi); | ||
328 | static char * getRootSpecifier(char * str); | ||
329 | niro | 914 | static void insertElement(struct singleLine * line, |
330 | const char * item, int insertHere, | ||
331 | struct configFileInfo * cfi); | ||
332 | static void removeElement(struct singleLine * line, int removeHere); | ||
333 | static struct keywordTypes * getKeywordByType(enum lineType_e type, | ||
334 | struct configFileInfo * cfi); | ||
335 | static enum lineType_e getTypeByKeyword(char * keyword, | ||
336 | struct configFileInfo * cfi); | ||
337 | static struct singleLine * getLineByType(enum lineType_e type, | ||
338 | struct singleLine * line); | ||
339 | static int checkForExtLinux(struct grubConfig * config); | ||
340 | struct singleLine * addLineTmpl(struct singleEntry * entry, | ||
341 | struct singleLine * tmplLine, | ||
342 | struct singleLine * prevLine, | ||
343 | const char * val, | ||
344 | struct configFileInfo * cfi); | ||
345 | struct singleLine * addLine(struct singleEntry * entry, | ||
346 | struct configFileInfo * cfi, | ||
347 | enum lineType_e type, char * defaultIndent, | ||
348 | const char * val); | ||
349 | niro | 532 | |
350 | static char * sdupprintf(const char *format, ...) | ||
351 | #ifdef __GNUC__ | ||
352 | __attribute__ ((format (printf, 1, 2))); | ||
353 | #else | ||
354 | ; | ||
355 | #endif | ||
356 | |||
357 | static char * sdupprintf(const char *format, ...) { | ||
358 | char *buf = NULL; | ||
359 | char c; | ||
360 | va_list args; | ||
361 | size_t size = 0; | ||
362 | va_start(args, format); | ||
363 | |||
364 | /* XXX requires C99 vsnprintf behavior */ | ||
365 | size = vsnprintf(&c, 1, format, args) + 1; | ||
366 | if (size == -1) { | ||
367 | printf("ERROR: vsnprintf behavior is not C99\n"); | ||
368 | abort(); | ||
369 | } | ||
370 | |||
371 | va_end(args); | ||
372 | va_start(args, format); | ||
373 | |||
374 | buf = malloc(size); | ||
375 | if (buf == NULL) | ||
376 | return NULL; | ||
377 | vsnprintf(buf, size, format, args); | ||
378 | va_end (args); | ||
379 | |||
380 | return buf; | ||
381 | } | ||
382 | |||
383 | niro | 914 | static struct keywordTypes * getKeywordByType(enum lineType_e type, |
384 | struct configFileInfo * cfi) { | ||
385 | struct keywordTypes * kw; | ||
386 | for (kw = cfi->keywords; kw->key; kw++) { | ||
387 | if (kw->type == type) | ||
388 | return kw; | ||
389 | } | ||
390 | return NULL; | ||
391 | } | ||
392 | |||
393 | static char * getpathbyspec(char *device) { | ||
394 | if (!blkid) | ||
395 | blkid_get_cache(&blkid, NULL); | ||
396 | |||
397 | return blkid_get_devname(blkid, device, NULL); | ||
398 | } | ||
399 | |||
400 | niro | 1156 | static char * getuuidbydev(char *device) { |
401 | if (!blkid) | ||
402 | blkid_get_cache(&blkid, NULL); | ||
403 | |||
404 | return blkid_get_tag_value(blkid, "UUID", device); | ||
405 | } | ||
406 | |||
407 | niro | 914 | static enum lineType_e getTypeByKeyword(char * keyword, |
408 | struct configFileInfo * cfi) { | ||
409 | struct keywordTypes * kw; | ||
410 | for (kw = cfi->keywords; kw->key; kw++) { | ||
411 | if (!strcmp(keyword, kw->key)) | ||
412 | return kw->type; | ||
413 | } | ||
414 | return LT_UNKNOWN; | ||
415 | } | ||
416 | |||
417 | static struct singleLine * getLineByType(enum lineType_e type, | ||
418 | struct singleLine * line) { | ||
419 | dbgPrintf("getLineByType(%d): ", type); | ||
420 | for (; line; line = line->next) { | ||
421 | dbgPrintf("%d:%s ", line->type, | ||
422 | line->numElements ? line->elements[0].item : "(empty)"); | ||
423 | if (line->type & type) break; | ||
424 | } | ||
425 | dbgPrintf(line ? "\n" : " (failed)\n"); | ||
426 | return line; | ||
427 | } | ||
428 | |||
429 | niro | 532 | static int isBracketedTitle(struct singleLine * line) { |
430 | niro | 914 | if (line->numElements == 1 && *line->elements[0].item == '[') { |
431 | niro | 532 | int len = strlen(line->elements[0].item); |
432 | if (*(line->elements[0].item + len - 1) == ']') { | ||
433 | /* FIXME: this is a hack... */ | ||
434 | if (strcmp(line->elements[0].item, "[defaultboot]")) { | ||
435 | return 1; | ||
436 | } | ||
437 | } | ||
438 | } | ||
439 | return 0; | ||
440 | } | ||
441 | |||
442 | niro | 1693 | static int isEntryStart(struct singleLine * line, |
443 | niro | 532 | struct configFileInfo * cfi) { |
444 | niro | 1693 | return line->type == cfi->entryStart || line->type == LT_OTHER || |
445 | niro | 914 | (cfi->titleBracketed && isBracketedTitle(line)); |
446 | niro | 532 | } |
447 | |||
448 | /* extract the title from within brackets (for zipl) */ | ||
449 | static char * extractTitle(struct singleLine * line) { | ||
450 | /* bracketed title... let's extract it (leaks a byte) */ | ||
451 | char * title; | ||
452 | title = strdup(line->elements[0].item); | ||
453 | title++; | ||
454 | *(title + strlen(title) - 1) = '\0'; | ||
455 | return title; | ||
456 | } | ||
457 | |||
458 | static int readFile(int fd, char ** bufPtr) { | ||
459 | int alloced = 0, size = 0, i = 0; | ||
460 | char * buf = NULL; | ||
461 | |||
462 | do { | ||
463 | size += i; | ||
464 | if ((size + 1024) > alloced) { | ||
465 | alloced += 4096; | ||
466 | buf = realloc(buf, alloced + 1); | ||
467 | } | ||
468 | } while ((i = read(fd, buf + size, 1024)) > 0); | ||
469 | |||
470 | if (i < 0) { | ||
471 | fprintf(stderr, _("error reading input: %s\n"), strerror(errno)); | ||
472 | free(buf); | ||
473 | return 1; | ||
474 | } | ||
475 | |||
476 | buf = realloc(buf, size + 2); | ||
477 | if (size == 0) | ||
478 | buf[size++] = '\n'; | ||
479 | else | ||
480 | if (buf[size - 1] != '\n') | ||
481 | buf[size++] = '\n'; | ||
482 | buf[size] = '\0'; | ||
483 | |||
484 | *bufPtr = buf; | ||
485 | |||
486 | return 0; | ||
487 | } | ||
488 | |||
489 | static void lineInit(struct singleLine * line) { | ||
490 | line->indent = NULL; | ||
491 | line->elements = NULL; | ||
492 | line->numElements = 0; | ||
493 | line->next = NULL; | ||
494 | } | ||
495 | |||
496 | niro | 914 | struct singleLine * lineDup(struct singleLine * line) { |
497 | int i; | ||
498 | struct singleLine * newLine = malloc(sizeof(*newLine)); | ||
499 | |||
500 | newLine->indent = strdup(line->indent); | ||
501 | newLine->next = NULL; | ||
502 | newLine->type = line->type; | ||
503 | newLine->numElements = line->numElements; | ||
504 | newLine->elements = malloc(sizeof(*newLine->elements) * | ||
505 | newLine->numElements); | ||
506 | |||
507 | for (i = 0; i < newLine->numElements; i++) { | ||
508 | newLine->elements[i].indent = strdup(line->elements[i].indent); | ||
509 | newLine->elements[i].item = strdup(line->elements[i].item); | ||
510 | } | ||
511 | |||
512 | return newLine; | ||
513 | } | ||
514 | |||
515 | niro | 532 | static void lineFree(struct singleLine * line) { |
516 | int i; | ||
517 | |||
518 | if (line->indent) free(line->indent); | ||
519 | |||
520 | for (i = 0; i < line->numElements; i++) { | ||
521 | free(line->elements[i].item); | ||
522 | free(line->elements[i].indent); | ||
523 | } | ||
524 | |||
525 | if (line->elements) free(line->elements); | ||
526 | lineInit(line); | ||
527 | } | ||
528 | |||
529 | static int lineWrite(FILE * out, struct singleLine * line, | ||
530 | struct configFileInfo * cfi) { | ||
531 | int i; | ||
532 | |||
533 | if (fprintf(out, "%s", line->indent) == -1) return -1; | ||
534 | |||
535 | for (i = 0; i < line->numElements; i++) { | ||
536 | if (i == 1 && line->type == LT_KERNELARGS && cfi->argsInQuotes) | ||
537 | if (fputc('"', out) == EOF) return -1; | ||
538 | |||
539 | if (fprintf(out, "%s", line->elements[i].item) == -1) return -1; | ||
540 | niro | 914 | if (i < line->numElements - 1) |
541 | if (fprintf(out, "%s", line->elements[i].indent) == -1) return -1; | ||
542 | niro | 532 | } |
543 | |||
544 | if (line->type == LT_KERNELARGS && cfi->argsInQuotes) | ||
545 | if (fputc('"', out) == EOF) return -1; | ||
546 | |||
547 | if (fprintf(out, "\n") == -1) return -1; | ||
548 | |||
549 | return 0; | ||
550 | } | ||
551 | |||
552 | /* we've guaranteed that the buffer ends w/ \n\0 */ | ||
553 | static int getNextLine(char ** bufPtr, struct singleLine * line, | ||
554 | struct configFileInfo * cfi) { | ||
555 | char * end; | ||
556 | char * start = *bufPtr; | ||
557 | char * chptr; | ||
558 | int elementsAlloced = 0; | ||
559 | struct lineElement * element; | ||
560 | int first = 1; | ||
561 | |||
562 | lineFree(line); | ||
563 | |||
564 | end = strchr(start, '\n'); | ||
565 | *end = '\0'; | ||
566 | *bufPtr = end + 1; | ||
567 | |||
568 | for (chptr = start; *chptr && isspace(*chptr); chptr++) ; | ||
569 | |||
570 | line->indent = strndup(start, chptr - start); | ||
571 | start = chptr; | ||
572 | |||
573 | while (start < end) { | ||
574 | /* we know !isspace(*start) */ | ||
575 | |||
576 | if (elementsAlloced == line->numElements) { | ||
577 | elementsAlloced += 5; | ||
578 | line->elements = realloc(line->elements, | ||
579 | sizeof(*line->elements) * elementsAlloced); | ||
580 | } | ||
581 | |||
582 | element = line->elements + line->numElements; | ||
583 | |||
584 | chptr = start; | ||
585 | while (*chptr && !isspace(*chptr)) { | ||
586 | if (first && *chptr == '=') break; | ||
587 | chptr++; | ||
588 | } | ||
589 | element->item = strndup(start, chptr - start); | ||
590 | start = chptr; | ||
591 | |||
592 | /* lilo actually accepts the pathological case of append = " foo " */ | ||
593 | if (*start == '=') | ||
594 | chptr = start + 1; | ||
595 | else | ||
596 | chptr = start; | ||
597 | |||
598 | do { | ||
599 | for (; *chptr && isspace(*chptr); chptr++); | ||
600 | if (*chptr == '=') | ||
601 | chptr = chptr + 1; | ||
602 | } while (isspace(*chptr)); | ||
603 | |||
604 | element->indent = strndup(start, chptr - start); | ||
605 | start = chptr; | ||
606 | |||
607 | line->numElements++; | ||
608 | first = 0; | ||
609 | } | ||
610 | |||
611 | if (!line->numElements) | ||
612 | line->type = LT_WHITESPACE; | ||
613 | else { | ||
614 | niro | 914 | line->type = getTypeByKeyword(line->elements[0].item, cfi); |
615 | if (line->type == LT_UNKNOWN) { | ||
616 | niro | 532 | /* zipl does [title] instead of something reasonable like all |
617 | * the other boot loaders. kind of ugly */ | ||
618 | if (cfi->titleBracketed && isBracketedTitle(line)) { | ||
619 | line->type = LT_TITLE; | ||
620 | } | ||
621 | |||
622 | /* this is awkward, but we need to be able to handle keywords | ||
623 | that begin with a # (specifically for #boot in grub.conf), | ||
624 | but still make comments lines with no elements (everything | ||
625 | stored in the indent */ | ||
626 | if (*line->elements[0].item == '#') { | ||
627 | char * fullLine; | ||
628 | int len; | ||
629 | int i; | ||
630 | |||
631 | len = strlen(line->indent); | ||
632 | for (i = 0; i < line->numElements; i++) | ||
633 | len += strlen(line->elements[i].item) + | ||
634 | strlen(line->elements[i].indent); | ||
635 | |||
636 | fullLine = malloc(len + 1); | ||
637 | strcpy(fullLine, line->indent); | ||
638 | free(line->indent); | ||
639 | line->indent = fullLine; | ||
640 | |||
641 | for (i = 0; i < line->numElements; i++) { | ||
642 | strcat(fullLine, line->elements[i].item); | ||
643 | strcat(fullLine, line->elements[i].indent); | ||
644 | free(line->elements[i].item); | ||
645 | free(line->elements[i].indent); | ||
646 | } | ||
647 | |||
648 | line->type = LT_WHITESPACE; | ||
649 | line->numElements = 0; | ||
650 | } | ||
651 | niro | 914 | } else { |
652 | struct keywordTypes *kw; | ||
653 | |||
654 | kw = getKeywordByType(line->type, cfi); | ||
655 | |||
656 | /* space isn't the only separator, we need to split | ||
657 | * elements up more | ||
658 | */ | ||
659 | if (!isspace(kw->separatorChar)) { | ||
660 | int i; | ||
661 | char indent[2] = ""; | ||
662 | indent[0] = kw->separatorChar; | ||
663 | for (i = 1; i < line->numElements; i++) { | ||
664 | char *p; | ||
665 | int j; | ||
666 | int numNewElements; | ||
667 | |||
668 | numNewElements = 0; | ||
669 | p = line->elements[i].item; | ||
670 | while (*p != '\0') { | ||
671 | if (*p == kw->separatorChar) | ||
672 | numNewElements++; | ||
673 | p++; | ||
674 | } | ||
675 | if (line->numElements + numNewElements >= elementsAlloced) { | ||
676 | elementsAlloced += numNewElements + 5; | ||
677 | line->elements = realloc(line->elements, | ||
678 | sizeof(*line->elements) * elementsAlloced); | ||
679 | } | ||
680 | |||
681 | for (j = line->numElements; j > i; j--) { | ||
682 | line->elements[j + numNewElements] = line->elements[j]; | ||
683 | } | ||
684 | line->numElements += numNewElements; | ||
685 | |||
686 | p = line->elements[i].item; | ||
687 | while (*p != '\0') { | ||
688 | |||
689 | while (*p != kw->separatorChar && *p != '\0') p++; | ||
690 | if (*p == '\0') { | ||
691 | break; | ||
692 | } | ||
693 | |||
694 | free(line->elements[i].indent); | ||
695 | line->elements[i].indent = strdup(indent); | ||
696 | *p++ = '\0'; | ||
697 | i++; | ||
698 | line->elements[i].item = strdup(p); | ||
699 | line->elements[i].indent = strdup(""); | ||
700 | p = line->elements[i].item; | ||
701 | } | ||
702 | } | ||
703 | } | ||
704 | niro | 532 | } |
705 | } | ||
706 | |||
707 | return 0; | ||
708 | } | ||
709 | |||
710 | static struct grubConfig * readConfig(const char * inName, | ||
711 | struct configFileInfo * cfi) { | ||
712 | int in; | ||
713 | char * incoming = NULL, * head; | ||
714 | int rc; | ||
715 | int sawEntry = 0; | ||
716 | int movedLine = 0; | ||
717 | struct grubConfig * cfg; | ||
718 | struct singleLine * last = NULL, * line, * defaultLine = NULL; | ||
719 | char * end; | ||
720 | struct singleEntry * entry = NULL; | ||
721 | int i, len; | ||
722 | char * buf; | ||
723 | |||
724 | if (!strcmp(inName, "-")) { | ||
725 | in = 0; | ||
726 | } else { | ||
727 | if ((in = open(inName, O_RDONLY)) < 0) { | ||
728 | fprintf(stderr, _("error opening %s for read: %s\n"), | ||
729 | inName, strerror(errno)); | ||
730 | return NULL; | ||
731 | } | ||
732 | } | ||
733 | |||
734 | rc = readFile(in, &incoming); | ||
735 | close(in); | ||
736 | if (rc) return NULL; | ||
737 | |||
738 | head = incoming; | ||
739 | cfg = malloc(sizeof(*cfg)); | ||
740 | cfg->primaryIndent = strdup(""); | ||
741 | cfg->secondaryIndent = strdup("\t"); | ||
742 | cfg->flags = GRUB_CONFIG_NO_DEFAULT; | ||
743 | cfg->cfi = cfi; | ||
744 | cfg->theLines = NULL; | ||
745 | cfg->entries = NULL; | ||
746 | cfg->fallbackImage = 0; | ||
747 | |||
748 | /* copy everything we have */ | ||
749 | while (*head) { | ||
750 | line = malloc(sizeof(*line)); | ||
751 | lineInit(line); | ||
752 | |||
753 | if (getNextLine(&head, line, cfi)) { | ||
754 | free(line); | ||
755 | /* XXX memory leak of everything in cfg */ | ||
756 | return NULL; | ||
757 | } | ||
758 | |||
759 | if (!sawEntry && line->numElements) { | ||
760 | free(cfg->primaryIndent); | ||
761 | cfg->primaryIndent = strdup(line->indent); | ||
762 | } else if (line->numElements) { | ||
763 | free(cfg->secondaryIndent); | ||
764 | cfg->secondaryIndent = strdup(line->indent); | ||
765 | } | ||
766 | |||
767 | niro | 1693 | if (isEntryStart(line, cfi)) { |
768 | niro | 532 | sawEntry = 1; |
769 | if (!entry) { | ||
770 | cfg->entries = malloc(sizeof(*entry)); | ||
771 | entry = cfg->entries; | ||
772 | } else { | ||
773 | entry->next = malloc(sizeof(*entry)); | ||
774 | entry = entry->next; | ||
775 | } | ||
776 | |||
777 | entry->skip = 0; | ||
778 | entry->multiboot = 0; | ||
779 | entry->lines = NULL; | ||
780 | entry->next = NULL; | ||
781 | } | ||
782 | |||
783 | if (line->type == LT_DEFAULT && line->numElements == 2) { | ||
784 | cfg->flags &= ~GRUB_CONFIG_NO_DEFAULT; | ||
785 | defaultLine = line; | ||
786 | niro | 914 | |
787 | } else if (line->type == LT_KERNEL) { | ||
788 | /* if by some freak chance this is multiboot and the "module" | ||
789 | * lines came earlier in the template, make sure to use LT_HYPER | ||
790 | * instead of LT_KERNEL now | ||
791 | */ | ||
792 | if (entry->multiboot) | ||
793 | line->type = LT_HYPER; | ||
794 | |||
795 | niro | 532 | } else if (line->type == LT_MBMODULE) { |
796 | niro | 914 | /* go back and fix the LT_KERNEL line to indicate LT_HYPER |
797 | * instead, now that we know this is a multiboot entry. | ||
798 | * This only applies to grub, but that's the only place we | ||
799 | * should find LT_MBMODULE lines anyway. | ||
800 | */ | ||
801 | struct singleLine * l; | ||
802 | for (l = entry->lines; l; l = l->next) { | ||
803 | if (l->type == LT_HYPER) | ||
804 | break; | ||
805 | else if (l->type == LT_KERNEL) { | ||
806 | l->type = LT_HYPER; | ||
807 | break; | ||
808 | } | ||
809 | } | ||
810 | niro | 532 | entry->multiboot = 1; |
811 | niro | 914 | |
812 | } else if (line->type == LT_HYPER) { | ||
813 | entry->multiboot = 1; | ||
814 | |||
815 | niro | 532 | } else if (line->type == LT_FALLBACK && line->numElements == 2) { |
816 | cfg->fallbackImage = strtol(line->elements[1].item, &end, 10); | ||
817 | if (*end) cfg->fallbackImage = -1; | ||
818 | niro | 914 | |
819 | niro | 532 | } else if (line->type == LT_TITLE && line->numElements > 1) { |
820 | /* make the title a single argument (undoing our parsing) */ | ||
821 | len = 0; | ||
822 | for (i = 1; i < line->numElements; i++) { | ||
823 | len += strlen(line->elements[i].item); | ||
824 | len += strlen(line->elements[i].indent); | ||
825 | } | ||
826 | buf = malloc(len + 1); | ||
827 | *buf = '\0'; | ||
828 | |||
829 | for (i = 1; i < line->numElements; i++) { | ||
830 | strcat(buf, line->elements[i].item); | ||
831 | free(line->elements[i].item); | ||
832 | |||
833 | if ((i + 1) != line->numElements) { | ||
834 | strcat(buf, line->elements[i].indent); | ||
835 | free(line->elements[i].indent); | ||
836 | } | ||
837 | } | ||
838 | |||
839 | line->elements[1].indent = | ||
840 | line->elements[line->numElements - 1].indent; | ||
841 | line->elements[1].item = buf; | ||
842 | line->numElements = 2; | ||
843 | niro | 914 | |
844 | niro | 532 | } else if (line->type == LT_KERNELARGS && cfi->argsInQuotes) { |
845 | /* Strip off any " which may be present; they'll be put back | ||
846 | on write. This is one of the few (the only?) places that grubby | ||
847 | canonicalizes the output */ | ||
848 | |||
849 | if (line->numElements >= 2) { | ||
850 | int last, len; | ||
851 | |||
852 | if (*line->elements[1].item == '"') | ||
853 | niro | 914 | memmove(line->elements[1].item, line->elements[1].item + 1, |
854 | strlen(line->elements[1].item + 1) + 1); | ||
855 | niro | 532 | |
856 | last = line->numElements - 1; | ||
857 | len = strlen(line->elements[last].item) - 1; | ||
858 | if (line->elements[last].item[len] == '"') | ||
859 | line->elements[last].item[len] = '\0'; | ||
860 | } | ||
861 | } | ||
862 | |||
863 | /* If we find a generic config option which should live at the | ||
864 | top of the file, move it there. Old versions of grubby were | ||
865 | probably responsible for putting new images in the wrong | ||
866 | place in front of it anyway. */ | ||
867 | if (sawEntry && line->type == LT_GENERIC) { | ||
868 | struct singleLine **l = &cfg->theLines; | ||
869 | struct singleLine **last_nonws = &cfg->theLines; | ||
870 | while (*l) { | ||
871 | if ((*l)->type != LT_WHITESPACE) | ||
872 | last_nonws = &((*l)->next); | ||
873 | l = &((*l)->next); | ||
874 | } | ||
875 | line->next = *last_nonws; | ||
876 | *last_nonws = line; | ||
877 | movedLine = 1; | ||
878 | continue; /* without setting 'last' */ | ||
879 | } | ||
880 | niro | 914 | |
881 | niro | 532 | /* If a second line of whitespace happens after a generic option |
882 | which was moved, drop it. */ | ||
883 | if (movedLine && line->type == LT_WHITESPACE && last->type == LT_WHITESPACE) { | ||
884 | lineFree(line); | ||
885 | free(line); | ||
886 | movedLine = 0; | ||
887 | continue; | ||
888 | } | ||
889 | movedLine = 0; | ||
890 | |||
891 | if (sawEntry) { | ||
892 | if (!entry->lines) | ||
893 | entry->lines = line; | ||
894 | else | ||
895 | last->next = line; | ||
896 | niro | 914 | dbgPrintf("readConfig added %d to %p\n", line->type, entry); |
897 | niro | 532 | } else { |
898 | if (!cfg->theLines) | ||
899 | cfg->theLines = line; | ||
900 | niro | 914 | else |
901 | niro | 532 | last->next = line; |
902 | niro | 914 | dbgPrintf("readConfig added %d to cfg\n", line->type); |
903 | niro | 532 | } |
904 | |||
905 | last = line; | ||
906 | } | ||
907 | |||
908 | free(incoming); | ||
909 | |||
910 | if (defaultLine) { | ||
911 | if (cfi->defaultSupportSaved && | ||
912 | !strncmp(defaultLine->elements[1].item, "saved", 5)) { | ||
913 | cfg->defaultImage = DEFAULT_SAVED; | ||
914 | } else if (cfi->defaultIsIndex) { | ||
915 | cfg->defaultImage = strtol(defaultLine->elements[1].item, &end, 10); | ||
916 | if (*end) cfg->defaultImage = -1; | ||
917 | } else if (defaultLine->numElements >= 2) { | ||
918 | i = 0; | ||
919 | while ((entry = findEntryByIndex(cfg, i))) { | ||
920 | for (line = entry->lines; line; line = line->next) | ||
921 | if (line->type == LT_TITLE) break; | ||
922 | |||
923 | if (!cfi->titleBracketed) { | ||
924 | if (line && (line->numElements >= 2) && | ||
925 | !strcmp(defaultLine->elements[1].item, | ||
926 | line->elements[1].item)) break; | ||
927 | } else if (line) { | ||
928 | if (!strcmp(defaultLine->elements[1].item, | ||
929 | extractTitle(line))) break; | ||
930 | } | ||
931 | i++; | ||
932 | niro | 914 | entry = NULL; |
933 | niro | 532 | } |
934 | |||
935 | niro | 914 | if (entry){ |
936 | cfg->defaultImage = i; | ||
937 | }else{ | ||
938 | cfg->defaultImage = -1; | ||
939 | } | ||
940 | niro | 532 | } |
941 | niro | 914 | } else { |
942 | cfg->defaultImage = 0; | ||
943 | niro | 532 | } |
944 | |||
945 | return cfg; | ||
946 | } | ||
947 | |||
948 | static void writeDefault(FILE * out, char * indent, | ||
949 | char * separator, struct grubConfig * cfg) { | ||
950 | struct singleEntry * entry; | ||
951 | struct singleLine * line; | ||
952 | int i; | ||
953 | |||
954 | if (!cfg->defaultImage && cfg->flags == GRUB_CONFIG_NO_DEFAULT) return; | ||
955 | |||
956 | if (cfg->defaultImage == DEFAULT_SAVED) | ||
957 | fprintf(out, "%sdefault%ssaved\n", indent, separator); | ||
958 | else if (cfg->defaultImage > -1) { | ||
959 | if (cfg->cfi->defaultIsIndex) { | ||
960 | fprintf(out, "%sdefault%s%d\n", indent, separator, | ||
961 | cfg->defaultImage); | ||
962 | } else { | ||
963 | int image = cfg->defaultImage; | ||
964 | |||
965 | entry = cfg->entries; | ||
966 | while (entry && entry->skip) entry = entry->next; | ||
967 | |||
968 | i = 0; | ||
969 | while (entry && i < image) { | ||
970 | entry = entry->next; | ||
971 | |||
972 | while (entry && entry->skip) entry = entry->next; | ||
973 | i++; | ||
974 | } | ||
975 | |||
976 | if (!entry) return; | ||
977 | |||
978 | niro | 914 | line = getLineByType(LT_TITLE, entry->lines); |
979 | niro | 532 | |
980 | if (line && line->numElements >= 2) | ||
981 | fprintf(out, "%sdefault%s%s\n", indent, separator, | ||
982 | line->elements[1].item); | ||
983 | else if (line && (line->numElements == 1) && | ||
984 | cfg->cfi->titleBracketed) { | ||
985 | fprintf(out, "%sdefault%s%s\n", indent, separator, | ||
986 | extractTitle(line)); | ||
987 | } | ||
988 | } | ||
989 | } | ||
990 | } | ||
991 | |||
992 | static int writeConfig(struct grubConfig * cfg, char * outName, | ||
993 | const char * prefix) { | ||
994 | FILE * out; | ||
995 | struct singleLine * line; | ||
996 | struct singleEntry * entry; | ||
997 | char * tmpOutName; | ||
998 | int needs = MAIN_DEFAULT; | ||
999 | struct stat sb; | ||
1000 | int i; | ||
1001 | |||
1002 | if (!strcmp(outName, "-")) { | ||
1003 | out = stdout; | ||
1004 | tmpOutName = NULL; | ||
1005 | } else { | ||
1006 | if (!lstat(outName, &sb) && S_ISLNK(sb.st_mode)) { | ||
1007 | char * buf; | ||
1008 | int len = 256; | ||
1009 | int rc; | ||
1010 | |||
1011 | /* most likely the symlink is relative, so change our | ||
1012 | niro | 914 | directory to the dir of the symlink */ |
1013 | rc = chdir(dirname(strdupa(outName))); | ||
1014 | niro | 532 | do { |
1015 | buf = alloca(len + 1); | ||
1016 | niro | 914 | rc = readlink(basename(outName), buf, len); |
1017 | niro | 532 | if (rc == len) len += 256; |
1018 | } while (rc == len); | ||
1019 | |||
1020 | if (rc < 0) { | ||
1021 | fprintf(stderr, _("grubby: error readlink link %s: %s\n"), | ||
1022 | outName, strerror(errno)); | ||
1023 | return 1; | ||
1024 | } | ||
1025 | |||
1026 | outName = buf; | ||
1027 | outName[rc] = '\0'; | ||
1028 | } | ||
1029 | |||
1030 | tmpOutName = alloca(strlen(outName) + 2); | ||
1031 | sprintf(tmpOutName, "%s-", outName); | ||
1032 | out = fopen(tmpOutName, "w"); | ||
1033 | if (!out) { | ||
1034 | fprintf(stderr, _("grubby: error creating %s: %s\n"), tmpOutName, | ||
1035 | strerror(errno)); | ||
1036 | return 1; | ||
1037 | } | ||
1038 | |||
1039 | if (!stat(outName, &sb)) { | ||
1040 | if (chmod(tmpOutName, sb.st_mode & ~(S_IFMT))) { | ||
1041 | fprintf(stderr, _("grubby: error setting perms on %s: %s\n"), | ||
1042 | tmpOutName, strerror(errno)); | ||
1043 | fclose(out); | ||
1044 | unlink(tmpOutName); | ||
1045 | return 1; | ||
1046 | } | ||
1047 | } | ||
1048 | } | ||
1049 | |||
1050 | line = cfg->theLines; | ||
1051 | while (line) { | ||
1052 | if (line->type == LT_DEFAULT) { | ||
1053 | writeDefault(out, line->indent, line->elements[0].indent, cfg); | ||
1054 | needs &= ~MAIN_DEFAULT; | ||
1055 | } else if (line->type == LT_FALLBACK) { | ||
1056 | if (cfg->fallbackImage > -1) | ||
1057 | fprintf(out, "%s%s%s%d\n", line->indent, | ||
1058 | line->elements[0].item, line->elements[0].indent, | ||
1059 | cfg->fallbackImage); | ||
1060 | } else { | ||
1061 | if (lineWrite(out, line, cfg->cfi) == -1) { | ||
1062 | fprintf(stderr, _("grubby: error writing %s: %s\n"), | ||
1063 | tmpOutName, strerror(errno)); | ||
1064 | fclose(out); | ||
1065 | unlink(tmpOutName); | ||
1066 | return 1; | ||
1067 | } | ||
1068 | } | ||
1069 | |||
1070 | line = line->next; | ||
1071 | } | ||
1072 | |||
1073 | if (needs & MAIN_DEFAULT) { | ||
1074 | writeDefault(out, cfg->primaryIndent, "=", cfg); | ||
1075 | needs &= ~MAIN_DEFAULT; | ||
1076 | } | ||
1077 | |||
1078 | i = 0; | ||
1079 | while ((entry = findEntryByIndex(cfg, i++))) { | ||
1080 | if (entry->skip) continue; | ||
1081 | |||
1082 | line = entry->lines; | ||
1083 | while (line) { | ||
1084 | if (lineWrite(out, line, cfg->cfi) == -1) { | ||
1085 | fprintf(stderr, _("grubby: error writing %s: %s\n"), | ||
1086 | tmpOutName, strerror(errno)); | ||
1087 | fclose(out); | ||
1088 | unlink(tmpOutName); | ||
1089 | return 1; | ||
1090 | } | ||
1091 | line = line->next; | ||
1092 | } | ||
1093 | } | ||
1094 | |||
1095 | if (tmpOutName) { | ||
1096 | if (rename(tmpOutName, outName)) { | ||
1097 | fprintf(stderr, _("grubby: error moving %s to %s: %s\n"), | ||
1098 | tmpOutName, outName, strerror(errno)); | ||
1099 | unlink(outName); | ||
1100 | return 1; | ||
1101 | } | ||
1102 | } | ||
1103 | |||
1104 | return 0; | ||
1105 | } | ||
1106 | |||
1107 | static int numEntries(struct grubConfig *cfg) { | ||
1108 | int i = 0; | ||
1109 | struct singleEntry * entry; | ||
1110 | |||
1111 | entry = cfg->entries; | ||
1112 | while (entry) { | ||
1113 | if (!entry->skip) | ||
1114 | i++; | ||
1115 | entry = entry->next; | ||
1116 | } | ||
1117 | return i; | ||
1118 | } | ||
1119 | |||
1120 | niro | 1156 | static char *findDiskForRoot() |
1121 | { | ||
1122 | int fd; | ||
1123 | char buf[65536]; | ||
1124 | char *devname; | ||
1125 | char *chptr; | ||
1126 | int rc; | ||
1127 | |||
1128 | if ((fd = open(_PATH_MOUNTED, O_RDONLY)) < 0) { | ||
1129 | fprintf(stderr, "grubby: failed to open %s: %s\n", | ||
1130 | _PATH_MOUNTED, strerror(errno)); | ||
1131 | return NULL; | ||
1132 | } | ||
1133 | |||
1134 | rc = read(fd, buf, sizeof(buf) - 1); | ||
1135 | if (rc <= 0) { | ||
1136 | fprintf(stderr, "grubby: failed to read %s: %s\n", | ||
1137 | _PATH_MOUNTED, strerror(errno)); | ||
1138 | close(fd); | ||
1139 | return NULL; | ||
1140 | } | ||
1141 | close(fd); | ||
1142 | buf[rc] = '\0'; | ||
1143 | chptr = buf; | ||
1144 | |||
1145 | while (chptr && chptr != buf+rc) { | ||
1146 | devname = chptr; | ||
1147 | |||
1148 | /* | ||
1149 | * The first column of a mtab entry is the device, but if the entry is a | ||
1150 | * special device it won't start with /, so move on to the next line. | ||
1151 | */ | ||
1152 | if (*devname != '/') { | ||
1153 | chptr = strchr(chptr, '\n'); | ||
1154 | if (chptr) | ||
1155 | chptr++; | ||
1156 | continue; | ||
1157 | } | ||
1158 | |||
1159 | /* Seek to the next space */ | ||
1160 | chptr = strchr(chptr, ' '); | ||
1161 | if (!chptr) { | ||
1162 | fprintf(stderr, "grubby: error parsing %s: %s\n", | ||
1163 | _PATH_MOUNTED, strerror(errno)); | ||
1164 | return NULL; | ||
1165 | } | ||
1166 | |||
1167 | /* | ||
1168 | * The second column of a mtab entry is the mount point, we are looking | ||
1169 | * for '/' obviously. | ||
1170 | */ | ||
1171 | if (*(++chptr) == '/' && *(++chptr) == ' ') { | ||
1172 | /* | ||
1173 | * Move back 2, which is the first space after the device name, set | ||
1174 | * it to \0 so strdup will just get the devicename. | ||
1175 | */ | ||
1176 | chptr -= 2; | ||
1177 | *chptr = '\0'; | ||
1178 | return strdup(devname); | ||
1179 | } | ||
1180 | |||
1181 | /* Next line */ | ||
1182 | chptr = strchr(chptr, '\n'); | ||
1183 | if (chptr) | ||
1184 | chptr++; | ||
1185 | } | ||
1186 | |||
1187 | return NULL; | ||
1188 | } | ||
1189 | |||
1190 | niro | 532 | int suitableImage(struct singleEntry * entry, const char * bootPrefix, |
1191 | int skipRemoved, int flags) { | ||
1192 | struct singleLine * line; | ||
1193 | char * fullName; | ||
1194 | int i; | ||
1195 | char * dev; | ||
1196 | char * rootspec; | ||
1197 | niro | 1156 | char * rootdev; |
1198 | niro | 532 | |
1199 | if (skipRemoved && entry->skip) return 0; | ||
1200 | |||
1201 | niro | 914 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1202 | if (!line || line->numElements < 2) return 0; | ||
1203 | |||
1204 | niro | 532 | if (flags & GRUBBY_BADIMAGE_OKAY) return 1; |
1205 | |||
1206 | fullName = alloca(strlen(bootPrefix) + | ||
1207 | strlen(line->elements[1].item) + 1); | ||
1208 | rootspec = getRootSpecifier(line->elements[1].item); | ||
1209 | sprintf(fullName, "%s%s", bootPrefix, | ||
1210 | niro | 914 | line->elements[1].item + (rootspec ? strlen(rootspec) : 0)); |
1211 | niro | 532 | if (access(fullName, R_OK)) return 0; |
1212 | |||
1213 | for (i = 2; i < line->numElements; i++) | ||
1214 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; | ||
1215 | if (i < line->numElements) { | ||
1216 | dev = line->elements[i].item + 5; | ||
1217 | } else { | ||
1218 | /* look for a lilo style LT_ROOT line */ | ||
1219 | niro | 914 | line = getLineByType(LT_ROOT, entry->lines); |
1220 | niro | 532 | |
1221 | if (line && line->numElements >= 2) { | ||
1222 | dev = line->elements[1].item; | ||
1223 | } else { | ||
1224 | niro | 914 | /* didn't succeed in finding a LT_ROOT, let's try LT_KERNELARGS. |
1225 | * grub+multiboot uses LT_MBMODULE for the args, so check that too. | ||
1226 | */ | ||
1227 | line = getLineByType(LT_KERNELARGS|LT_MBMODULE, entry->lines); | ||
1228 | niro | 532 | |
1229 | /* failed to find one */ | ||
1230 | if (!line) return 0; | ||
1231 | |||
1232 | for (i = 1; i < line->numElements; i++) | ||
1233 | if (!strncasecmp(line->elements[i].item, "root=", 5)) break; | ||
1234 | if (i < line->numElements) | ||
1235 | dev = line->elements[i].item + 5; | ||
1236 | else { | ||
1237 | /* it failed too... can't find root= */ | ||
1238 | return 0; | ||
1239 | } | ||
1240 | } | ||
1241 | } | ||
1242 | |||
1243 | niro | 914 | dev = getpathbyspec(dev); |
1244 | if (!dev) | ||
1245 | return 0; | ||
1246 | niro | 532 | |
1247 | niro | 1156 | rootdev = findDiskForRoot(); |
1248 | if (!rootdev) | ||
1249 | niro | 914 | return 0; |
1250 | |||
1251 | niro | 1177 | if (!getuuidbydev(rootdev) || !getuuidbydev(dev)) { |
1252 | free(rootdev); | ||
1253 | return 0; | ||
1254 | } | ||
1255 | niro | 532 | |
1256 | niro | 1156 | if (strcmp(getuuidbydev(rootdev), getuuidbydev(dev))) { |
1257 | free(rootdev); | ||
1258 | niro | 914 | return 0; |
1259 | niro | 1156 | } |
1260 | niro | 532 | |
1261 | niro | 1156 | free(rootdev); |
1262 | |||
1263 | niro | 532 | return 1; |
1264 | } | ||
1265 | |||
1266 | /* returns the first match on or after the one pointed to by index (if index | ||
1267 | is not NULL) which is not marked as skip */ | ||
1268 | struct singleEntry * findEntryByPath(struct grubConfig * config, | ||
1269 | const char * kernel, const char * prefix, | ||
1270 | int * index) { | ||
1271 | struct singleEntry * entry = NULL; | ||
1272 | struct singleLine * line; | ||
1273 | int i; | ||
1274 | char * chptr; | ||
1275 | char * rootspec = NULL; | ||
1276 | enum lineType_e checkType = LT_KERNEL; | ||
1277 | |||
1278 | if (isdigit(*kernel)) { | ||
1279 | int * indexVars = alloca(sizeof(*indexVars) * strlen(kernel)); | ||
1280 | |||
1281 | i = 0; | ||
1282 | indexVars[i] = strtol(kernel, &chptr, 10); | ||
1283 | while (*chptr == ',') { | ||
1284 | i++; | ||
1285 | kernel = chptr + 1; | ||
1286 | indexVars[i] = strtol(kernel, &chptr, 10); | ||
1287 | } | ||
1288 | |||
1289 | if (*chptr) { | ||
1290 | /* can't parse it, bail */ | ||
1291 | return NULL; | ||
1292 | } | ||
1293 | |||
1294 | indexVars[i + 1] = -1; | ||
1295 | |||
1296 | i = 0; | ||
1297 | if (index) { | ||
1298 | while (i < *index) i++; | ||
1299 | if (indexVars[i] == -1) return NULL; | ||
1300 | } | ||
1301 | |||
1302 | entry = findEntryByIndex(config, indexVars[i]); | ||
1303 | if (!entry) return NULL; | ||
1304 | |||
1305 | niro | 914 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1306 | niro | 532 | if (!line) return NULL; |
1307 | |||
1308 | if (index) *index = indexVars[i]; | ||
1309 | return entry; | ||
1310 | } | ||
1311 | |||
1312 | if (!strcmp(kernel, "DEFAULT")) { | ||
1313 | if (index && *index > config->defaultImage) { | ||
1314 | entry = NULL; | ||
1315 | } else { | ||
1316 | entry = findEntryByIndex(config, config->defaultImage); | ||
1317 | if (entry && entry->skip) | ||
1318 | entry = NULL; | ||
1319 | else if (index) | ||
1320 | *index = config->defaultImage; | ||
1321 | } | ||
1322 | } else if (!strcmp(kernel, "ALL")) { | ||
1323 | if (index) | ||
1324 | i = *index; | ||
1325 | else | ||
1326 | i = 0; | ||
1327 | |||
1328 | while ((entry = findEntryByIndex(config, i))) { | ||
1329 | if (!entry->skip) break; | ||
1330 | i++; | ||
1331 | } | ||
1332 | |||
1333 | if (entry && index) | ||
1334 | *index = i; | ||
1335 | } else { | ||
1336 | if (index) | ||
1337 | i = *index; | ||
1338 | else | ||
1339 | i = 0; | ||
1340 | |||
1341 | if (!strncmp(kernel, "TITLE=", 6)) { | ||
1342 | prefix = ""; | ||
1343 | checkType = LT_TITLE; | ||
1344 | kernel += 6; | ||
1345 | } | ||
1346 | |||
1347 | niro | 914 | for (entry = findEntryByIndex(config, i); entry; entry = entry->next, i++) { |
1348 | if (entry->skip) continue; | ||
1349 | niro | 532 | |
1350 | niro | 914 | dbgPrintf("findEntryByPath looking for %d %s in %p\n", checkType, kernel, entry); |
1351 | niro | 532 | |
1352 | niro | 914 | /* check all the lines matching checkType */ |
1353 | for (line = entry->lines; line; line = line->next) { | ||
1354 | line = getLineByType(entry->multiboot && checkType == LT_KERNEL ? | ||
1355 | LT_KERNEL|LT_MBMODULE|LT_HYPER : | ||
1356 | checkType, line); | ||
1357 | if (!line) break; /* not found in this entry */ | ||
1358 | niro | 532 | |
1359 | niro | 914 | if (line && line->numElements >= 2) { |
1360 | rootspec = getRootSpecifier(line->elements[1].item); | ||
1361 | if (!strcmp(line->elements[1].item + | ||
1362 | ((rootspec != NULL) ? strlen(rootspec) : 0), | ||
1363 | kernel + strlen(prefix))) | ||
1364 | break; | ||
1365 | } | ||
1366 | } | ||
1367 | |||
1368 | /* make sure this entry has a kernel identifier; this skips | ||
1369 | * non-Linux boot entries (could find netbsd etc, though, which is | ||
1370 | * unfortunate) | ||
1371 | */ | ||
1372 | if (line && getLineByType(LT_KERNEL|LT_HYPER, entry->lines)) | ||
1373 | break; /* found 'im! */ | ||
1374 | niro | 532 | } |
1375 | |||
1376 | if (index) *index = i; | ||
1377 | } | ||
1378 | |||
1379 | return entry; | ||
1380 | } | ||
1381 | |||
1382 | struct singleEntry * findEntryByIndex(struct grubConfig * cfg, int index) { | ||
1383 | struct singleEntry * entry; | ||
1384 | |||
1385 | entry = cfg->entries; | ||
1386 | while (index && entry) { | ||
1387 | entry = entry->next; | ||
1388 | index--; | ||
1389 | } | ||
1390 | |||
1391 | return entry; | ||
1392 | } | ||
1393 | |||
1394 | /* Find a good template to use for the new kernel. An entry is | ||
1395 | * good if the kernel and mkinitrd exist (even if the entry | ||
1396 | * is going to be removed). Try and use the default entry, but | ||
1397 | * if that doesn't work just take the first. If we can't find one, | ||
1398 | * bail. */ | ||
1399 | struct singleEntry * findTemplate(struct grubConfig * cfg, const char * prefix, | ||
1400 | int * indexPtr, int skipRemoved, int flags) { | ||
1401 | struct singleEntry * entry, * entry2; | ||
1402 | int index; | ||
1403 | |||
1404 | if (cfg->defaultImage > -1) { | ||
1405 | entry = findEntryByIndex(cfg, cfg->defaultImage); | ||
1406 | if (entry && suitableImage(entry, prefix, skipRemoved, flags)) { | ||
1407 | if (indexPtr) *indexPtr = cfg->defaultImage; | ||
1408 | return entry; | ||
1409 | } | ||
1410 | } | ||
1411 | |||
1412 | index = 0; | ||
1413 | while ((entry = findEntryByIndex(cfg, index))) { | ||
1414 | if (suitableImage(entry, prefix, skipRemoved, flags)) { | ||
1415 | int j; | ||
1416 | for (j = 0; j < index; j++) { | ||
1417 | entry2 = findEntryByIndex(cfg, j); | ||
1418 | if (entry2->skip) index--; | ||
1419 | } | ||
1420 | if (indexPtr) *indexPtr = index; | ||
1421 | |||
1422 | return entry; | ||
1423 | } | ||
1424 | |||
1425 | index++; | ||
1426 | } | ||
1427 | |||
1428 | fprintf(stderr, _("grubby fatal error: unable to find a suitable template\n")); | ||
1429 | |||
1430 | return NULL; | ||
1431 | } | ||
1432 | |||
1433 | char * findBootPrefix(void) { | ||
1434 | struct stat sb, sb2; | ||
1435 | |||
1436 | stat("/", &sb); | ||
1437 | #ifdef __ia64__ | ||
1438 | stat("/boot/efi/EFI/redhat/", &sb2); | ||
1439 | #else | ||
1440 | stat("/boot", &sb2); | ||
1441 | #endif | ||
1442 | |||
1443 | if (sb.st_dev == sb2.st_dev) | ||
1444 | return strdup(""); | ||
1445 | |||
1446 | #ifdef __ia64__ | ||
1447 | return strdup("/boot/efi/EFI/redhat/"); | ||
1448 | #else | ||
1449 | return strdup("/boot"); | ||
1450 | #endif | ||
1451 | } | ||
1452 | |||
1453 | void markRemovedImage(struct grubConfig * cfg, const char * image, | ||
1454 | const char * prefix) { | ||
1455 | struct singleEntry * entry; | ||
1456 | |||
1457 | if (!image) return; | ||
1458 | |||
1459 | while ((entry = findEntryByPath(cfg, image, prefix, NULL))) | ||
1460 | entry->skip = 1; | ||
1461 | } | ||
1462 | |||
1463 | void setDefaultImage(struct grubConfig * config, int hasNew, | ||
1464 | const char * defaultKernelPath, int newIsDefault, | ||
1465 | const char * prefix, int flags) { | ||
1466 | struct singleEntry * entry, * entry2, * newDefault; | ||
1467 | int i, j; | ||
1468 | |||
1469 | if (newIsDefault) { | ||
1470 | config->defaultImage = 0; | ||
1471 | return; | ||
1472 | } else if (defaultKernelPath) { | ||
1473 | i = 0; | ||
1474 | if (findEntryByPath(config, defaultKernelPath, prefix, &i)) { | ||
1475 | config->defaultImage = i; | ||
1476 | } else { | ||
1477 | config->defaultImage = -1; | ||
1478 | return; | ||
1479 | } | ||
1480 | } | ||
1481 | |||
1482 | /* defaultImage now points to what we'd like to use, but before any order | ||
1483 | changes */ | ||
1484 | if (config->defaultImage == DEFAULT_SAVED) | ||
1485 | /* default is set to saved, we don't want to change it */ | ||
1486 | return; | ||
1487 | |||
1488 | if (config->defaultImage > -1) | ||
1489 | entry = findEntryByIndex(config, config->defaultImage); | ||
1490 | else | ||
1491 | entry = NULL; | ||
1492 | |||
1493 | if (entry && !entry->skip) { | ||
1494 | /* we can preserve the default */ | ||
1495 | if (hasNew) | ||
1496 | config->defaultImage++; | ||
1497 | |||
1498 | /* count the number of entries erased before this one */ | ||
1499 | for (j = 0; j < config->defaultImage; j++) { | ||
1500 | entry2 = findEntryByIndex(config, j); | ||
1501 | if (entry2->skip) config->defaultImage--; | ||
1502 | } | ||
1503 | } else if (hasNew) { | ||
1504 | config->defaultImage = 0; | ||
1505 | } else { | ||
1506 | /* Either we just erased the default (or the default line was bad | ||
1507 | * to begin with) and didn't put a new one in. We'll use the first | ||
1508 | * valid image. */ | ||
1509 | newDefault = findTemplate(config, prefix, &config->defaultImage, 1, | ||
1510 | flags); | ||
1511 | if (!newDefault) | ||
1512 | config->defaultImage = -1; | ||
1513 | } | ||
1514 | } | ||
1515 | |||
1516 | void setFallbackImage(struct grubConfig * config, int hasNew) { | ||
1517 | struct singleEntry * entry, * entry2; | ||
1518 | int j; | ||
1519 | |||
1520 | if (config->fallbackImage == -1) return; | ||
1521 | |||
1522 | entry = findEntryByIndex(config, config->fallbackImage); | ||
1523 | if (!entry || entry->skip) { | ||
1524 | config->fallbackImage = -1; | ||
1525 | return; | ||
1526 | } | ||
1527 | |||
1528 | if (hasNew) | ||
1529 | config->fallbackImage++; | ||
1530 | |||
1531 | /* count the number of entries erased before this one */ | ||
1532 | for (j = 0; j < config->fallbackImage; j++) { | ||
1533 | entry2 = findEntryByIndex(config, j); | ||
1534 | if (entry2->skip) config->fallbackImage--; | ||
1535 | } | ||
1536 | } | ||
1537 | |||
1538 | void displayEntry(struct singleEntry * entry, const char * prefix, int index) { | ||
1539 | struct singleLine * line; | ||
1540 | char * root = NULL; | ||
1541 | int i; | ||
1542 | |||
1543 | printf("index=%d\n", index); | ||
1544 | |||
1545 | niro | 914 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
1546 | if (!line) { | ||
1547 | printf("non linux entry\n"); | ||
1548 | return; | ||
1549 | } | ||
1550 | |||
1551 | niro | 532 | printf("kernel=%s\n", line->elements[1].item); |
1552 | |||
1553 | if (line->numElements >= 3) { | ||
1554 | printf("args=\""); | ||
1555 | i = 2; | ||
1556 | while (i < line->numElements) { | ||
1557 | if (!strncmp(line->elements[i].item, "root=", 5)) { | ||
1558 | root = line->elements[i].item + 5; | ||
1559 | } else { | ||
1560 | printf("%s%s", line->elements[i].item, | ||
1561 | line->elements[i].indent); | ||
1562 | } | ||
1563 | |||
1564 | i++; | ||
1565 | } | ||
1566 | printf("\"\n"); | ||
1567 | } else { | ||
1568 | niro | 914 | line = getLineByType(LT_KERNELARGS, entry->lines); |
1569 | niro | 532 | if (line) { |
1570 | char * s; | ||
1571 | |||
1572 | printf("args=\""); | ||
1573 | i = 1; | ||
1574 | while (i < line->numElements) { | ||
1575 | if (!strncmp(line->elements[i].item, "root=", 5)) { | ||
1576 | root = line->elements[i].item + 5; | ||
1577 | } else { | ||
1578 | s = line->elements[i].item; | ||
1579 | |||
1580 | printf("%s%s", s, line->elements[i].indent); | ||
1581 | } | ||
1582 | |||
1583 | i++; | ||
1584 | } | ||
1585 | |||
1586 | s = line->elements[i - 1].indent; | ||
1587 | printf("\"\n"); | ||
1588 | } | ||
1589 | } | ||
1590 | |||
1591 | if (!root) { | ||
1592 | niro | 914 | line = getLineByType(LT_ROOT, entry->lines); |
1593 | niro | 532 | if (line && line->numElements >= 2) |
1594 | root=line->elements[1].item; | ||
1595 | } | ||
1596 | |||
1597 | if (root) { | ||
1598 | char * s = alloca(strlen(root) + 1); | ||
1599 | |||
1600 | strcpy(s, root); | ||
1601 | if (s[strlen(s) - 1] == '"') | ||
1602 | s[strlen(s) - 1] = '\0'; | ||
1603 | /* make sure the root doesn't have a trailing " */ | ||
1604 | printf("root=%s\n", s); | ||
1605 | } | ||
1606 | |||
1607 | niro | 914 | line = getLineByType(LT_INITRD, entry->lines); |
1608 | niro | 532 | |
1609 | if (line && line->numElements >= 2) { | ||
1610 | printf("initrd=%s", prefix); | ||
1611 | for (i = 1; i < line->numElements; i++) | ||
1612 | printf("%s%s", line->elements[i].item, line->elements[i].indent); | ||
1613 | printf("\n"); | ||
1614 | } | ||
1615 | } | ||
1616 | |||
1617 | int parseSysconfigGrub(int * lbaPtr, char ** bootPtr) { | ||
1618 | FILE * in; | ||
1619 | char buf[1024]; | ||
1620 | char * chptr; | ||
1621 | char * start; | ||
1622 | char * param; | ||
1623 | |||
1624 | niro | 926 | in = fopen("/etc/conf.d/grub", "r"); |
1625 | niro | 532 | if (!in) return 1; |
1626 | |||
1627 | if (lbaPtr) *lbaPtr = 0; | ||
1628 | if (bootPtr) *bootPtr = NULL; | ||
1629 | |||
1630 | while (fgets(buf, sizeof(buf), in)) { | ||
1631 | start = buf; | ||
1632 | while (isspace(*start)) start++; | ||
1633 | if (*start == '#') continue; | ||
1634 | |||
1635 | chptr = strchr(start, '='); | ||
1636 | if (!chptr) continue; | ||
1637 | chptr--; | ||
1638 | while (*chptr && isspace(*chptr)) chptr--; | ||
1639 | chptr++; | ||
1640 | *chptr = '\0'; | ||
1641 | |||
1642 | param = chptr + 1; | ||
1643 | while (*param && isspace(*param)) param++; | ||
1644 | if (*param == '=') { | ||
1645 | param++; | ||
1646 | while (*param && isspace(*param)) param++; | ||
1647 | } | ||
1648 | |||
1649 | chptr = param; | ||
1650 | while (*chptr && !isspace(*chptr)) chptr++; | ||
1651 | *chptr = '\0'; | ||
1652 | |||
1653 | if (!strcmp(start, "forcelba") && !strcmp(param, "1") && lbaPtr) | ||
1654 | *lbaPtr = 1; | ||
1655 | else if (!strcmp(start, "boot") && bootPtr) | ||
1656 | *bootPtr = strdup(param); | ||
1657 | } | ||
1658 | |||
1659 | fclose(in); | ||
1660 | |||
1661 | return 0; | ||
1662 | } | ||
1663 | |||
1664 | void dumpSysconfigGrub(void) { | ||
1665 | char * boot; | ||
1666 | int lba; | ||
1667 | |||
1668 | if (!parseSysconfigGrub(&lba, &boot)) { | ||
1669 | if (lba) printf("lba\n"); | ||
1670 | if (boot) printf("boot=%s\n", boot); | ||
1671 | } | ||
1672 | } | ||
1673 | |||
1674 | int displayInfo(struct grubConfig * config, char * kernel, | ||
1675 | const char * prefix) { | ||
1676 | int i = 0; | ||
1677 | struct singleEntry * entry; | ||
1678 | struct singleLine * line; | ||
1679 | |||
1680 | entry = findEntryByPath(config, kernel, prefix, &i); | ||
1681 | if (!entry) { | ||
1682 | fprintf(stderr, _("grubby: kernel not found\n")); | ||
1683 | return 1; | ||
1684 | } | ||
1685 | |||
1686 | niro | 926 | /* this is a horrible hack to support /etc/conf.d/grub; there must |
1687 | niro | 532 | be a better way */ |
1688 | if (config->cfi == &grubConfigType) { | ||
1689 | dumpSysconfigGrub(); | ||
1690 | } else { | ||
1691 | niro | 914 | line = getLineByType(LT_BOOT, config->theLines); |
1692 | niro | 532 | if (line && line->numElements >= 1) { |
1693 | printf("boot=%s\n", line->elements[1].item); | ||
1694 | } | ||
1695 | |||
1696 | niro | 914 | line = getLineByType(LT_LBA, config->theLines); |
1697 | niro | 532 | if (line) printf("lba\n"); |
1698 | } | ||
1699 | |||
1700 | displayEntry(entry, prefix, i); | ||
1701 | |||
1702 | i++; | ||
1703 | while ((entry = findEntryByPath(config, kernel, prefix, &i))) { | ||
1704 | displayEntry(entry, prefix, i); | ||
1705 | i++; | ||
1706 | } | ||
1707 | |||
1708 | return 0; | ||
1709 | } | ||
1710 | |||
1711 | niro | 914 | struct singleLine * addLineTmpl(struct singleEntry * entry, |
1712 | struct singleLine * tmplLine, | ||
1713 | struct singleLine * prevLine, | ||
1714 | const char * val, | ||
1715 | struct configFileInfo * cfi) | ||
1716 | { | ||
1717 | struct singleLine * newLine = lineDup(tmplLine); | ||
1718 | |||
1719 | if (val) { | ||
1720 | /* override the inherited value with our own. | ||
1721 | * This is a little weak because it only applies to elements[1] | ||
1722 | */ | ||
1723 | if (newLine->numElements > 1) | ||
1724 | removeElement(newLine, 1); | ||
1725 | insertElement(newLine, val, 1, cfi); | ||
1726 | |||
1727 | /* but try to keep the rootspec from the template... sigh */ | ||
1728 | if (tmplLine->type & (LT_HYPER|LT_KERNEL|LT_MBMODULE|LT_INITRD)) { | ||
1729 | char * rootspec = getRootSpecifier(tmplLine->elements[1].item); | ||
1730 | if (rootspec != NULL) { | ||
1731 | free(newLine->elements[1].item); | ||
1732 | newLine->elements[1].item = | ||
1733 | sdupprintf("%s%s", rootspec, val); | ||
1734 | } | ||
1735 | } | ||
1736 | } | ||
1737 | |||
1738 | dbgPrintf("addLineTmpl(%s)\n", newLine->numElements ? | ||
1739 | newLine->elements[0].item : ""); | ||
1740 | |||
1741 | if (!entry->lines) { | ||
1742 | /* first one on the list */ | ||
1743 | entry->lines = newLine; | ||
1744 | } else if (prevLine) { | ||
1745 | /* add after prevLine */ | ||
1746 | newLine->next = prevLine->next; | ||
1747 | prevLine->next = newLine; | ||
1748 | } | ||
1749 | |||
1750 | return newLine; | ||
1751 | } | ||
1752 | |||
1753 | niro | 532 | /* val may be NULL */ |
1754 | struct singleLine * addLine(struct singleEntry * entry, | ||
1755 | struct configFileInfo * cfi, | ||
1756 | niro | 914 | enum lineType_e type, char * defaultIndent, |
1757 | const char * val) { | ||
1758 | niro | 532 | struct singleLine * line, * prev; |
1759 | niro | 914 | struct keywordTypes * kw; |
1760 | struct singleLine tmpl; | ||
1761 | niro | 532 | |
1762 | niro | 914 | /* NB: This function shouldn't allocate items on the heap, rather on the |
1763 | * stack since it calls addLineTmpl which will make copies. | ||
1764 | */ | ||
1765 | niro | 532 | |
1766 | niro | 914 | if (type == LT_TITLE && cfi->titleBracketed) { |
1767 | /* we're doing a bracketed title (zipl) */ | ||
1768 | tmpl.type = type; | ||
1769 | tmpl.numElements = 1; | ||
1770 | tmpl.elements = alloca(sizeof(*tmpl.elements)); | ||
1771 | tmpl.elements[0].item = alloca(strlen(val)+3); | ||
1772 | sprintf(tmpl.elements[0].item, "[%s]", val); | ||
1773 | tmpl.elements[0].indent = ""; | ||
1774 | val = NULL; | ||
1775 | } else { | ||
1776 | kw = getKeywordByType(type, cfi); | ||
1777 | if (!kw) abort(); | ||
1778 | tmpl.type = type; | ||
1779 | tmpl.numElements = val ? 2 : 1; | ||
1780 | tmpl.elements = alloca(sizeof(*tmpl.elements) * tmpl.numElements); | ||
1781 | tmpl.elements[0].item = kw->key; | ||
1782 | tmpl.elements[0].indent = alloca(2); | ||
1783 | sprintf(tmpl.elements[0].indent, "%c", kw->nextChar); | ||
1784 | if (val) { | ||
1785 | tmpl.elements[1].item = (char *)val; | ||
1786 | tmpl.elements[1].indent = ""; | ||
1787 | } | ||
1788 | } | ||
1789 | |||
1790 | niro | 532 | /* The last non-empty line gives us the indention to us and the line |
1791 | to insert after. Note that comments are considered empty lines, which | ||
1792 | may not be ideal? If there are no lines or we are looking at the | ||
1793 | first line, we use defaultIndent (the first line is normally indented | ||
1794 | differently from the rest) */ | ||
1795 | niro | 914 | for (line = entry->lines, prev = NULL; line; line = line->next) { |
1796 | if (line->numElements) prev = line; | ||
1797 | /* fall back on the last line if prev isn't otherwise set */ | ||
1798 | if (!line->next && !prev) prev = line; | ||
1799 | niro | 532 | } |
1800 | |||
1801 | niro | 914 | if (prev == entry->lines) |
1802 | tmpl.indent = defaultIndent ?: ""; | ||
1803 | else | ||
1804 | tmpl.indent = prev->indent; | ||
1805 | niro | 532 | |
1806 | niro | 914 | return addLineTmpl(entry, &tmpl, prev, val, cfi); |
1807 | niro | 532 | } |
1808 | |||
1809 | void removeLine(struct singleEntry * entry, struct singleLine * line) { | ||
1810 | struct singleLine * prev; | ||
1811 | int i; | ||
1812 | |||
1813 | for (i = 0; i < line->numElements; i++) { | ||
1814 | free(line->elements[i].item); | ||
1815 | free(line->elements[i].indent); | ||
1816 | } | ||
1817 | free(line->elements); | ||
1818 | free(line->indent); | ||
1819 | |||
1820 | if (line == entry->lines) { | ||
1821 | entry->lines = line->next; | ||
1822 | } else { | ||
1823 | prev = entry->lines; | ||
1824 | while (prev->next != line) prev = prev->next; | ||
1825 | prev->next = line->next; | ||
1826 | } | ||
1827 | |||
1828 | free(line); | ||
1829 | } | ||
1830 | |||
1831 | niro | 914 | static void insertElement(struct singleLine * line, |
1832 | const char * item, int insertHere, | ||
1833 | struct configFileInfo * cfi) | ||
1834 | { | ||
1835 | struct keywordTypes * kw; | ||
1836 | char indent[2] = ""; | ||
1837 | |||
1838 | /* sanity check */ | ||
1839 | if (insertHere > line->numElements) { | ||
1840 | dbgPrintf("insertElement() adjusting insertHere from %d to %d\n", | ||
1841 | insertHere, line->numElements); | ||
1842 | insertHere = line->numElements; | ||
1843 | } | ||
1844 | |||
1845 | line->elements = realloc(line->elements, (line->numElements + 1) * | ||
1846 | sizeof(*line->elements)); | ||
1847 | memmove(&line->elements[insertHere+1], | ||
1848 | &line->elements[insertHere], | ||
1849 | (line->numElements - insertHere) * | ||
1850 | sizeof(*line->elements)); | ||
1851 | line->elements[insertHere].item = strdup(item); | ||
1852 | |||
1853 | kw = getKeywordByType(line->type, cfi); | ||
1854 | |||
1855 | if (line->numElements == 0) { | ||
1856 | indent[0] = '\0'; | ||
1857 | } else if (insertHere == 0) { | ||
1858 | indent[0] = kw->nextChar; | ||
1859 | } else if (kw->separatorChar != '\0') { | ||
1860 | indent[0] = kw->separatorChar; | ||
1861 | } else { | ||
1862 | indent[0] = ' '; | ||
1863 | } | ||
1864 | |||
1865 | if (insertHere > 0 && line->elements[insertHere-1].indent[0] == '\0') { | ||
1866 | /* move the end-of-line forward */ | ||
1867 | line->elements[insertHere].indent = | ||
1868 | line->elements[insertHere-1].indent; | ||
1869 | line->elements[insertHere-1].indent = strdup(indent); | ||
1870 | } else { | ||
1871 | line->elements[insertHere].indent = strdup(indent); | ||
1872 | } | ||
1873 | |||
1874 | line->numElements++; | ||
1875 | |||
1876 | dbgPrintf("insertElement(%s, '%s%s', %d)\n", | ||
1877 | line->elements[0].item, | ||
1878 | line->elements[insertHere].item, | ||
1879 | line->elements[insertHere].indent, | ||
1880 | insertHere); | ||
1881 | } | ||
1882 | |||
1883 | static void removeElement(struct singleLine * line, int removeHere) { | ||
1884 | int i; | ||
1885 | |||
1886 | /* sanity check */ | ||
1887 | if (removeHere >= line->numElements) return; | ||
1888 | |||
1889 | dbgPrintf("removeElement(%s, %d:%s)\n", line->elements[0].item, | ||
1890 | removeHere, line->elements[removeHere].item); | ||
1891 | |||
1892 | free(line->elements[removeHere].item); | ||
1893 | |||
1894 | if (removeHere > 1) { | ||
1895 | /* previous argument gets this argument's post-indentation */ | ||
1896 | free(line->elements[removeHere-1].indent); | ||
1897 | line->elements[removeHere-1].indent = | ||
1898 | line->elements[removeHere].indent; | ||
1899 | } else { | ||
1900 | free(line->elements[removeHere].indent); | ||
1901 | } | ||
1902 | |||
1903 | /* now collapse the array, but don't bother to realloc smaller */ | ||
1904 | for (i = removeHere; i < line->numElements - 1; i++) | ||
1905 | line->elements[i] = line->elements[i + 1]; | ||
1906 | |||
1907 | line->numElements--; | ||
1908 | } | ||
1909 | |||
1910 | niro | 532 | int argMatch(const char * one, const char * two) { |
1911 | char * first, * second; | ||
1912 | char * chptr; | ||
1913 | |||
1914 | first = strcpy(alloca(strlen(one) + 1), one); | ||
1915 | second = strcpy(alloca(strlen(two) + 1), two); | ||
1916 | |||
1917 | chptr = strchr(first, '='); | ||
1918 | if (chptr) *chptr = '\0'; | ||
1919 | |||
1920 | chptr = strchr(second, '='); | ||
1921 | if (chptr) *chptr = '\0'; | ||
1922 | |||
1923 | return strcmp(first, second); | ||
1924 | } | ||
1925 | |||
1926 | int updateActualImage(struct grubConfig * cfg, const char * image, | ||
1927 | const char * prefix, const char * addArgs, | ||
1928 | const char * removeArgs, int multibootArgs) { | ||
1929 | struct singleEntry * entry; | ||
1930 | struct singleLine * line, * rootLine; | ||
1931 | int index = 0; | ||
1932 | niro | 914 | int i, k; |
1933 | niro | 532 | const char ** newArgs, ** oldArgs; |
1934 | const char ** arg; | ||
1935 | niro | 914 | int useKernelArgs, useRoot; |
1936 | niro | 532 | int firstElement; |
1937 | niro | 1304 | int *usedElements; |
1938 | niro | 914 | int doreplace; |
1939 | niro | 532 | |
1940 | if (!image) return 0; | ||
1941 | |||
1942 | if (!addArgs) { | ||
1943 | newArgs = malloc(sizeof(*newArgs)); | ||
1944 | *newArgs = NULL; | ||
1945 | } else { | ||
1946 | if (poptParseArgvString(addArgs, NULL, &newArgs)) { | ||
1947 | fprintf(stderr, | ||
1948 | _("grubby: error separating arguments '%s'\n"), addArgs); | ||
1949 | return 1; | ||
1950 | } | ||
1951 | } | ||
1952 | |||
1953 | if (!removeArgs) { | ||
1954 | oldArgs = malloc(sizeof(*oldArgs)); | ||
1955 | *oldArgs = NULL; | ||
1956 | } else { | ||
1957 | if (poptParseArgvString(removeArgs, NULL, &oldArgs)) { | ||
1958 | fprintf(stderr, | ||
1959 | _("grubby: error separating arguments '%s'\n"), removeArgs); | ||
1960 | free(newArgs); | ||
1961 | return 1; | ||
1962 | } | ||
1963 | } | ||
1964 | |||
1965 | |||
1966 | niro | 914 | useKernelArgs = (getKeywordByType(LT_KERNELARGS, cfg->cfi) |
1967 | && (!multibootArgs || cfg->cfi->mbConcatArgs)); | ||
1968 | niro | 532 | |
1969 | niro | 914 | useRoot = (getKeywordByType(LT_ROOT, cfg->cfi) |
1970 | && !multibootArgs); | ||
1971 | niro | 532 | |
1972 | niro | 914 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { |
1973 | niro | 532 | |
1974 | niro | 914 | if (multibootArgs && !entry->multiboot) |
1975 | continue; | ||
1976 | niro | 532 | |
1977 | niro | 914 | /* Determine where to put the args. If this config supports |
1978 | * LT_KERNELARGS, use that. Otherwise use | ||
1979 | * LT_HYPER/LT_KERNEL/LT_MBMODULE lines. | ||
1980 | */ | ||
1981 | if (useKernelArgs) { | ||
1982 | line = getLineByType(LT_KERNELARGS, entry->lines); | ||
1983 | if (!line) { | ||
1984 | /* no LT_KERNELARGS, need to add it */ | ||
1985 | line = addLine(entry, cfg->cfi, LT_KERNELARGS, | ||
1986 | cfg->secondaryIndent, NULL); | ||
1987 | } | ||
1988 | firstElement = 1; | ||
1989 | niro | 532 | |
1990 | niro | 914 | } else if (multibootArgs) { |
1991 | line = getLineByType(LT_HYPER, entry->lines); | ||
1992 | if (!line) { | ||
1993 | /* a multiboot entry without LT_HYPER? */ | ||
1994 | continue; | ||
1995 | } | ||
1996 | firstElement = 2; | ||
1997 | |||
1998 | } else { | ||
1999 | line = getLineByType(LT_KERNEL|LT_MBMODULE, entry->lines); | ||
2000 | if (!line) { | ||
2001 | /* no LT_KERNEL or LT_MBMODULE in this entry? */ | ||
2002 | continue; | ||
2003 | } | ||
2004 | firstElement = 2; | ||
2005 | niro | 532 | } |
2006 | |||
2007 | niro | 914 | /* handle the elilo case which does: |
2008 | * append="hypervisor args -- kernel args" | ||
2009 | */ | ||
2010 | if (entry->multiboot && cfg->cfi->mbConcatArgs) { | ||
2011 | /* this is a multiboot entry, make sure there's | ||
2012 | * -- on the args line | ||
2013 | */ | ||
2014 | for (i = firstElement; i < line->numElements; i++) { | ||
2015 | if (!strcmp(line->elements[i].item, "--")) | ||
2016 | break; | ||
2017 | } | ||
2018 | if (i == line->numElements) { | ||
2019 | /* assume all existing args are kernel args, | ||
2020 | * prepend -- to make it official | ||
2021 | */ | ||
2022 | insertElement(line, "--", firstElement, cfg->cfi); | ||
2023 | i = firstElement; | ||
2024 | } | ||
2025 | if (!multibootArgs) { | ||
2026 | /* kernel args start after the -- */ | ||
2027 | firstElement = i + 1; | ||
2028 | } | ||
2029 | } else if (cfg->cfi->mbConcatArgs) { | ||
2030 | /* this is a non-multiboot entry, remove hyper args */ | ||
2031 | for (i = firstElement; i < line->numElements; i++) { | ||
2032 | if (!strcmp(line->elements[i].item, "--")) | ||
2033 | break; | ||
2034 | } | ||
2035 | if (i < line->numElements) { | ||
2036 | /* remove args up to -- */ | ||
2037 | while (strcmp(line->elements[firstElement].item, "--")) | ||
2038 | removeElement(line, firstElement); | ||
2039 | /* remove -- */ | ||
2040 | removeElement(line, firstElement); | ||
2041 | } | ||
2042 | niro | 532 | } |
2043 | |||
2044 | niro | 914 | usedElements = calloc(line->numElements, sizeof(*usedElements)); |
2045 | niro | 532 | |
2046 | niro | 914 | for (k = 0, arg = newArgs; *arg; arg++, k++) { |
2047 | |||
2048 | doreplace = 1; | ||
2049 | niro | 532 | for (i = firstElement; i < line->numElements; i++) { |
2050 | niro | 914 | if (multibootArgs && cfg->cfi->mbConcatArgs && |
2051 | !strcmp(line->elements[i].item, "--")) | ||
2052 | { | ||
2053 | /* reached the end of hyper args, insert here */ | ||
2054 | doreplace = 0; | ||
2055 | break; | ||
2056 | } | ||
2057 | niro | 532 | if (usedElements[i]) |
2058 | continue; | ||
2059 | if (!argMatch(line->elements[i].item, *arg)) { | ||
2060 | usedElements[i]=1; | ||
2061 | break; | ||
2062 | } | ||
2063 | } | ||
2064 | |||
2065 | niro | 914 | if (i < line->numElements && doreplace) { |
2066 | /* direct replacement */ | ||
2067 | niro | 532 | free(line->elements[i].item); |
2068 | line->elements[i].item = strdup(*arg); | ||
2069 | |||
2070 | niro | 914 | } else if (useRoot && !strncmp(*arg, "root=/dev/", 10)) { |
2071 | /* root= replacement */ | ||
2072 | rootLine = getLineByType(LT_ROOT, entry->lines); | ||
2073 | if (rootLine) { | ||
2074 | free(rootLine->elements[1].item); | ||
2075 | rootLine->elements[1].item = strdup(*arg + 5); | ||
2076 | niro | 532 | } else { |
2077 | niro | 914 | rootLine = addLine(entry, cfg->cfi, LT_ROOT, |
2078 | cfg->secondaryIndent, *arg + 5); | ||
2079 | niro | 532 | } |
2080 | niro | 914 | } |
2081 | niro | 532 | |
2082 | niro | 914 | else { |
2083 | /* insert/append */ | ||
2084 | insertElement(line, *arg, i, cfg->cfi); | ||
2085 | usedElements = realloc(usedElements, line->numElements * | ||
2086 | sizeof(*usedElements)); | ||
2087 | memmove(&usedElements[i + 1], &usedElements[i], | ||
2088 | line->numElements - i - 1); | ||
2089 | usedElements[i] = 1; | ||
2090 | niro | 532 | |
2091 | /* if we updated a root= here even though there is a | ||
2092 | LT_ROOT available we need to remove the LT_ROOT entry | ||
2093 | (this will happen if we switch from a device to a label) */ | ||
2094 | if (useRoot && !strncmp(*arg, "root=", 5)) { | ||
2095 | niro | 914 | rootLine = getLineByType(LT_ROOT, entry->lines); |
2096 | if (rootLine) | ||
2097 | niro | 532 | removeLine(entry, rootLine); |
2098 | } | ||
2099 | } | ||
2100 | } | ||
2101 | |||
2102 | free(usedElements); | ||
2103 | |||
2104 | for (arg = oldArgs; *arg; arg++) { | ||
2105 | niro | 914 | for (i = firstElement; i < line->numElements; i++) { |
2106 | if (multibootArgs && cfg->cfi->mbConcatArgs && | ||
2107 | !strcmp(line->elements[i].item, "--")) | ||
2108 | /* reached the end of hyper args, stop here */ | ||
2109 | niro | 532 | break; |
2110 | niro | 914 | if (!argMatch(line->elements[i].item, *arg)) { |
2111 | removeElement(line, i); | ||
2112 | break; | ||
2113 | niro | 532 | } |
2114 | } | ||
2115 | niro | 914 | /* handle removing LT_ROOT line too */ |
2116 | if (useRoot && !strncmp(*arg, "root=", 5)) { | ||
2117 | rootLine = getLineByType(LT_ROOT, entry->lines); | ||
2118 | if (rootLine) | ||
2119 | removeLine(entry, rootLine); | ||
2120 | } | ||
2121 | niro | 532 | } |
2122 | |||
2123 | if (line->numElements == 1) { | ||
2124 | /* don't need the line at all (note it has to be a | ||
2125 | LT_KERNELARGS for this to happen */ | ||
2126 | removeLine(entry, line); | ||
2127 | } | ||
2128 | } | ||
2129 | |||
2130 | free(newArgs); | ||
2131 | free(oldArgs); | ||
2132 | |||
2133 | return 0; | ||
2134 | } | ||
2135 | |||
2136 | int updateImage(struct grubConfig * cfg, const char * image, | ||
2137 | const char * prefix, const char * addArgs, | ||
2138 | const char * removeArgs, | ||
2139 | const char * addMBArgs, const char * removeMBArgs) { | ||
2140 | int rc = 0; | ||
2141 | |||
2142 | if (!image) return rc; | ||
2143 | |||
2144 | /* update the main args first... */ | ||
2145 | if (addArgs || removeArgs) | ||
2146 | rc = updateActualImage(cfg, image, prefix, addArgs, removeArgs, 0); | ||
2147 | if (rc) return rc; | ||
2148 | |||
2149 | /* and now any multiboot args */ | ||
2150 | if (addMBArgs || removeMBArgs) | ||
2151 | rc = updateActualImage(cfg, image, prefix, addMBArgs, removeMBArgs, 1); | ||
2152 | return rc; | ||
2153 | } | ||
2154 | |||
2155 | niro | 1156 | int updateInitrd(struct grubConfig * cfg, const char * image, |
2156 | const char * prefix, const char * initrd) { | ||
2157 | struct singleEntry * entry; | ||
2158 | struct singleLine * line, * kernelLine; | ||
2159 | int index = 0; | ||
2160 | |||
2161 | if (!image) return 0; | ||
2162 | |||
2163 | for (; (entry = findEntryByPath(cfg, image, prefix, &index)); index++) { | ||
2164 | kernelLine = getLineByType(LT_KERNEL, entry->lines); | ||
2165 | if (!kernelLine) continue; | ||
2166 | |||
2167 | line = getLineByType(LT_INITRD, entry->lines); | ||
2168 | if (line) | ||
2169 | removeLine(entry, line); | ||
2170 | if (prefix) { | ||
2171 | int prefixLen = strlen(prefix); | ||
2172 | if (!strncmp(initrd, prefix, prefixLen)) | ||
2173 | initrd += prefixLen; | ||
2174 | } | ||
2175 | line = addLine(entry, cfg->cfi, LT_INITRD, kernelLine->indent, initrd); | ||
2176 | if (!line) return 1; | ||
2177 | break; | ||
2178 | } | ||
2179 | |||
2180 | return 0; | ||
2181 | } | ||
2182 | |||
2183 | niro | 532 | int checkDeviceBootloader(const char * device, const unsigned char * boot) { |
2184 | int fd; | ||
2185 | unsigned char bootSect[512]; | ||
2186 | int offset; | ||
2187 | |||
2188 | fd = open(device, O_RDONLY); | ||
2189 | if (fd < 0) { | ||
2190 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), | ||
2191 | device, strerror(errno)); | ||
2192 | return 1; | ||
2193 | } | ||
2194 | |||
2195 | if (read(fd, bootSect, 512) != 512) { | ||
2196 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), | ||
2197 | device, strerror(errno)); | ||
2198 | return 1; | ||
2199 | } | ||
2200 | close(fd); | ||
2201 | |||
2202 | /* first three bytes should match, a jmp short should be in there */ | ||
2203 | if (memcmp(boot, bootSect, 3)) | ||
2204 | return 0; | ||
2205 | |||
2206 | if (boot[1] == 0xeb) { | ||
2207 | offset = boot[2] + 2; | ||
2208 | } else if (boot[1] == 0xe8 || boot[1] == 0xe9) { | ||
2209 | offset = (boot[3] << 8) + boot[2] + 2; | ||
2210 | } else if (boot[0] == 0xeb) { | ||
2211 | offset = boot[1] + 2; | ||
2212 | } else if (boot[0] == 0xe8 || boot[0] == 0xe9) { | ||
2213 | offset = (boot[2] << 8) + boot[1] + 2; | ||
2214 | } else { | ||
2215 | return 0; | ||
2216 | } | ||
2217 | |||
2218 | if (memcmp(boot + offset, bootSect + offset, CODE_SEG_SIZE)) | ||
2219 | return 0; | ||
2220 | |||
2221 | return 2; | ||
2222 | } | ||
2223 | |||
2224 | int checkLiloOnRaid(char * mdDev, const unsigned char * boot) { | ||
2225 | int fd; | ||
2226 | char buf[65536]; | ||
2227 | char * end; | ||
2228 | char * chptr; | ||
2229 | char * chptr2; | ||
2230 | int rc; | ||
2231 | |||
2232 | /* it's on raid; we need to parse /proc/mdstat and check all of the | ||
2233 | *raw* devices listed in there */ | ||
2234 | |||
2235 | if (!strncmp(mdDev, "/dev/", 5)) | ||
2236 | mdDev += 5; | ||
2237 | |||
2238 | if ((fd = open("/proc/mdstat", O_RDONLY)) < 0) { | ||
2239 | fprintf(stderr, _("grubby: failed to open /proc/mdstat: %s\n"), | ||
2240 | strerror(errno)); | ||
2241 | return 2; | ||
2242 | } | ||
2243 | |||
2244 | rc = read(fd, buf, sizeof(buf) - 1); | ||
2245 | if (rc < 0 || rc == (sizeof(buf) - 1)) { | ||
2246 | fprintf(stderr, _("grubby: failed to read /proc/mdstat: %s\n"), | ||
2247 | strerror(errno)); | ||
2248 | close(fd); | ||
2249 | return 2; | ||
2250 | } | ||
2251 | close(fd); | ||
2252 | buf[rc] = '\0'; | ||
2253 | |||
2254 | chptr = buf; | ||
2255 | while (*chptr) { | ||
2256 | end = strchr(chptr, '\n'); | ||
2257 | if (!end) break; | ||
2258 | *end = '\0'; | ||
2259 | |||
2260 | if (!strncmp(chptr, mdDev, strlen(mdDev)) && | ||
2261 | chptr[strlen(mdDev)] == ' ') { | ||
2262 | |||
2263 | /* found the device */ | ||
2264 | while (*chptr && *chptr != ':') chptr++; | ||
2265 | chptr++; | ||
2266 | while (*chptr && isspace(*chptr)) chptr++; | ||
2267 | |||
2268 | /* skip the "active" bit */ | ||
2269 | while (*chptr && !isspace(*chptr)) chptr++; | ||
2270 | while (*chptr && isspace(*chptr)) chptr++; | ||
2271 | |||
2272 | /* skip the raid level */ | ||
2273 | while (*chptr && !isspace(*chptr)) chptr++; | ||
2274 | while (*chptr && isspace(*chptr)) chptr++; | ||
2275 | |||
2276 | /* everything else is partition stuff */ | ||
2277 | while (*chptr) { | ||
2278 | chptr2 = chptr; | ||
2279 | while (*chptr2 && *chptr2 != '[') chptr2++; | ||
2280 | if (!*chptr2) break; | ||
2281 | |||
2282 | /* yank off the numbers at the end */ | ||
2283 | chptr2--; | ||
2284 | while (isdigit(*chptr2) && chptr2 > chptr) chptr2--; | ||
2285 | chptr2++; | ||
2286 | *chptr2 = '\0'; | ||
2287 | |||
2288 | /* Better, now we need the /dev/ back. We're done with | ||
2289 | * everything before this point, so we can just put | ||
2290 | * the /dev/ part there. There will always be room. */ | ||
2291 | memcpy(chptr - 5, "/dev/", 5); | ||
2292 | rc = checkDeviceBootloader(chptr - 5, boot); | ||
2293 | if (rc != 2) { | ||
2294 | return rc; | ||
2295 | } | ||
2296 | |||
2297 | chptr = chptr2 + 1; | ||
2298 | /* skip the [11] bit */ | ||
2299 | while (*chptr && !isspace(*chptr)) chptr++; | ||
2300 | /* and move to the next one */ | ||
2301 | while (*chptr && isspace(*chptr)) chptr++; | ||
2302 | } | ||
2303 | |||
2304 | /* we're good to go */ | ||
2305 | return 2; | ||
2306 | } | ||
2307 | |||
2308 | chptr = end + 1; | ||
2309 | } | ||
2310 | |||
2311 | fprintf(stderr, | ||
2312 | _("grubby: raid device /dev/%s not found in /proc/mdstat\n"), | ||
2313 | mdDev); | ||
2314 | return 0; | ||
2315 | } | ||
2316 | |||
2317 | int checkForLilo(struct grubConfig * config) { | ||
2318 | int fd; | ||
2319 | unsigned char boot[512]; | ||
2320 | struct singleLine * line; | ||
2321 | |||
2322 | for (line = config->theLines; line; line = line->next) | ||
2323 | if (line->type == LT_BOOT) break; | ||
2324 | |||
2325 | if (!line) { | ||
2326 | fprintf(stderr, | ||
2327 | _("grubby: no boot line found in lilo configuration\n")); | ||
2328 | return 1; | ||
2329 | } | ||
2330 | |||
2331 | if (line->numElements != 2) return 1; | ||
2332 | |||
2333 | fd = open("/boot/boot.b", O_RDONLY); | ||
2334 | if (fd < 0) { | ||
2335 | fprintf(stderr, _("grubby: unable to open %s: %s\n"), | ||
2336 | "/boot/boot.b", strerror(errno)); | ||
2337 | return 1; | ||
2338 | } | ||
2339 | |||
2340 | if (read(fd, boot, 512) != 512) { | ||
2341 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), | ||
2342 | "/boot/boot.b", strerror(errno)); | ||
2343 | return 1; | ||
2344 | } | ||
2345 | close(fd); | ||
2346 | |||
2347 | if (!strncmp("/dev/md", line->elements[1].item, 7)) | ||
2348 | return checkLiloOnRaid(line->elements[1].item, boot); | ||
2349 | |||
2350 | return checkDeviceBootloader(line->elements[1].item, boot); | ||
2351 | } | ||
2352 | |||
2353 | int checkForGrub(struct grubConfig * config) { | ||
2354 | int fd; | ||
2355 | unsigned char bootSect[512]; | ||
2356 | char * boot; | ||
2357 | |||
2358 | if (parseSysconfigGrub(NULL, &boot)) | ||
2359 | return 0; | ||
2360 | |||
2361 | /* assume grub is not installed -- not an error condition */ | ||
2362 | if (!boot) | ||
2363 | return 0; | ||
2364 | |||
2365 | fd = open("/boot/grub/stage1", O_RDONLY); | ||
2366 | if (fd < 0) | ||
2367 | /* this doesn't exist if grub hasn't been installed */ | ||
2368 | return 0; | ||
2369 | |||
2370 | if (read(fd, bootSect, 512) != 512) { | ||
2371 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), | ||
2372 | "/boot/grub/stage1", strerror(errno)); | ||
2373 | niro | 914 | close(fd); |
2374 | niro | 532 | return 1; |
2375 | } | ||
2376 | close(fd); | ||
2377 | |||
2378 | return checkDeviceBootloader(boot, bootSect); | ||
2379 | } | ||
2380 | |||
2381 | niro | 914 | int checkForExtLinux(struct grubConfig * config) { |
2382 | int fd; | ||
2383 | unsigned char bootSect[512]; | ||
2384 | char * boot; | ||
2385 | char executable[] = "/boot/extlinux/extlinux"; | ||
2386 | |||
2387 | printf("entered: checkForExtLinux()\n"); | ||
2388 | |||
2389 | if (parseSysconfigGrub(NULL, &boot)) | ||
2390 | return 0; | ||
2391 | |||
2392 | /* assume grub is not installed -- not an error condition */ | ||
2393 | if (!boot) | ||
2394 | return 0; | ||
2395 | |||
2396 | fd = open(executable, O_RDONLY); | ||
2397 | if (fd < 0) | ||
2398 | /* this doesn't exist if grub hasn't been installed */ | ||
2399 | return 0; | ||
2400 | |||
2401 | if (read(fd, bootSect, 512) != 512) { | ||
2402 | fprintf(stderr, _("grubby: unable to read %s: %s\n"), | ||
2403 | executable, strerror(errno)); | ||
2404 | return 1; | ||
2405 | } | ||
2406 | close(fd); | ||
2407 | |||
2408 | return checkDeviceBootloader(boot, bootSect); | ||
2409 | } | ||
2410 | |||
2411 | niro | 532 | static char * getRootSpecifier(char * str) { |
2412 | char * idx, * rootspec = NULL; | ||
2413 | |||
2414 | if (*str == '(') { | ||
2415 | idx = rootspec = strdup(str); | ||
2416 | while(*idx && (*idx != ')') && (!isspace(*idx))) idx++; | ||
2417 | *(++idx) = '\0'; | ||
2418 | } | ||
2419 | return rootspec; | ||
2420 | } | ||
2421 | |||
2422 | niro | 914 | static char * getInitrdVal(struct grubConfig * config, |
2423 | const char * prefix, struct singleLine *tmplLine, | ||
2424 | const char * newKernelInitrd, | ||
2425 | char ** extraInitrds, int extraInitrdCount) | ||
2426 | { | ||
2427 | char *initrdVal, *end; | ||
2428 | int i; | ||
2429 | size_t totalSize; | ||
2430 | size_t prefixLen; | ||
2431 | char separatorChar; | ||
2432 | |||
2433 | prefixLen = strlen(prefix); | ||
2434 | totalSize = strlen(newKernelInitrd) - prefixLen + 1 /* \0 */; | ||
2435 | |||
2436 | for (i = 0; i < extraInitrdCount; i++) { | ||
2437 | totalSize += sizeof(separatorChar); | ||
2438 | totalSize += strlen(extraInitrds[i]) - prefixLen; | ||
2439 | } | ||
2440 | |||
2441 | initrdVal = end = malloc(totalSize); | ||
2442 | |||
2443 | end = stpcpy (end, newKernelInitrd + prefixLen); | ||
2444 | |||
2445 | separatorChar = getKeywordByType(LT_INITRD, config->cfi)->separatorChar; | ||
2446 | for (i = 0; i < extraInitrdCount; i++) { | ||
2447 | const char *extraInitrd; | ||
2448 | int j; | ||
2449 | |||
2450 | extraInitrd = extraInitrds[i] + prefixLen; | ||
2451 | /* Don't add entries that are already there */ | ||
2452 | if (tmplLine != NULL) { | ||
2453 | for (j = 2; j < tmplLine->numElements; j++) | ||
2454 | if (strcmp(extraInitrd, tmplLine->elements[j].item) == 0) | ||
2455 | break; | ||
2456 | |||
2457 | if (j != tmplLine->numElements) | ||
2458 | continue; | ||
2459 | } | ||
2460 | |||
2461 | *end++ = separatorChar; | ||
2462 | end = stpcpy(end, extraInitrd); | ||
2463 | } | ||
2464 | |||
2465 | return initrdVal; | ||
2466 | } | ||
2467 | |||
2468 | niro | 532 | int addNewKernel(struct grubConfig * config, struct singleEntry * template, |
2469 | const char * prefix, | ||
2470 | char * newKernelPath, char * newKernelTitle, | ||
2471 | char * newKernelArgs, char * newKernelInitrd, | ||
2472 | niro | 914 | char ** extraInitrds, int extraInitrdCount, |
2473 | niro | 532 | char * newMBKernel, char * newMBKernelArgs) { |
2474 | struct singleEntry * new; | ||
2475 | niro | 914 | struct singleLine * newLine = NULL, * tmplLine = NULL, * masterLine = NULL; |
2476 | niro | 532 | int needs; |
2477 | char * chptr; | ||
2478 | |||
2479 | if (!newKernelPath) return 0; | ||
2480 | |||
2481 | /* if the newKernelTitle is too long silently munge it into something | ||
2482 | * we can live with. truncating is first check, then we'll just mess with | ||
2483 | * it until it looks better */ | ||
2484 | if (config->cfi->maxTitleLength && | ||
2485 | (strlen(newKernelTitle) > config->cfi->maxTitleLength)) { | ||
2486 | char * buf = alloca(config->cfi->maxTitleLength + 7); | ||
2487 | char * numBuf = alloca(config->cfi->maxTitleLength + 1); | ||
2488 | int i = 1; | ||
2489 | |||
2490 | sprintf(buf, "TITLE=%.*s", config->cfi->maxTitleLength, newKernelTitle); | ||
2491 | while (findEntryByPath(config, buf, NULL, NULL)) { | ||
2492 | sprintf(numBuf, "%d", i++); | ||
2493 | strcpy(buf + strlen(buf) - strlen(numBuf), numBuf); | ||
2494 | } | ||
2495 | |||
2496 | newKernelTitle = buf + 6; | ||
2497 | } | ||
2498 | |||
2499 | new = malloc(sizeof(*new)); | ||
2500 | new->skip = 0; | ||
2501 | new->multiboot = 0; | ||
2502 | new->next = config->entries; | ||
2503 | new->lines = NULL; | ||
2504 | config->entries = new; | ||
2505 | |||
2506 | /* copy/update from the template */ | ||
2507 | niro | 914 | needs = NEED_KERNEL | NEED_TITLE; |
2508 | if (newKernelInitrd) | ||
2509 | needs |= NEED_INITRD; | ||
2510 | niro | 532 | if (newMBKernel) { |
2511 | niro | 914 | needs |= NEED_MB; |
2512 | niro | 532 | new->multiboot = 1; |
2513 | } | ||
2514 | |||
2515 | if (template) { | ||
2516 | niro | 914 | for (masterLine = template->lines; |
2517 | masterLine && (tmplLine = lineDup(masterLine)); | ||
2518 | lineFree(tmplLine), masterLine = masterLine->next) | ||
2519 | { | ||
2520 | dbgPrintf("addNewKernel processing %d\n", tmplLine->type); | ||
2521 | niro | 532 | |
2522 | /* skip comments */ | ||
2523 | chptr = tmplLine->indent; | ||
2524 | while (*chptr && isspace(*chptr)) chptr++; | ||
2525 | if (*chptr == '#') continue; | ||
2526 | |||
2527 | niro | 914 | if (tmplLine->type == LT_KERNEL && |
2528 | tmplLine->numElements >= 2) { | ||
2529 | if (!template->multiboot && (needs & NEED_MB)) { | ||
2530 | /* it's not a multiboot template and this is the kernel | ||
2531 | * line. Try to be intelligent about inserting the | ||
2532 | * hypervisor at the same time. | ||
2533 | */ | ||
2534 | if (config->cfi->mbHyperFirst) { | ||
2535 | /* insert the hypervisor first */ | ||
2536 | newLine = addLine(new, config->cfi, LT_HYPER, | ||
2537 | tmplLine->indent, | ||
2538 | newMBKernel + strlen(prefix)); | ||
2539 | /* set up for adding the kernel line */ | ||
2540 | free(tmplLine->indent); | ||
2541 | tmplLine->indent = strdup(config->secondaryIndent); | ||
2542 | needs &= ~NEED_MB; | ||
2543 | } | ||
2544 | if (needs & NEED_KERNEL) { | ||
2545 | /* use addLineTmpl to preserve line elements, | ||
2546 | * otherwise we could just call addLine. Unfortunately | ||
2547 | * this means making some changes to the template | ||
2548 | * such as the indent change above and the type | ||
2549 | * change below. | ||
2550 | */ | ||
2551 | struct keywordTypes * mbm_kw = | ||
2552 | getKeywordByType(LT_MBMODULE, config->cfi); | ||
2553 | if (mbm_kw) { | ||
2554 | tmplLine->type = LT_MBMODULE; | ||
2555 | free(tmplLine->elements[0].item); | ||
2556 | tmplLine->elements[0].item = strdup(mbm_kw->key); | ||
2557 | } | ||
2558 | newLine = addLineTmpl(new, tmplLine, newLine, | ||
2559 | newKernelPath + strlen(prefix), config->cfi); | ||
2560 | needs &= ~NEED_KERNEL; | ||
2561 | } | ||
2562 | if (needs & NEED_MB) { /* !mbHyperFirst */ | ||
2563 | newLine = addLine(new, config->cfi, LT_HYPER, | ||
2564 | config->secondaryIndent, | ||
2565 | newMBKernel + strlen(prefix)); | ||
2566 | needs &= ~NEED_MB; | ||
2567 | } | ||
2568 | } else if (needs & NEED_KERNEL) { | ||
2569 | newLine = addLineTmpl(new, tmplLine, newLine, | ||
2570 | newKernelPath + strlen(prefix), config->cfi); | ||
2571 | needs &= ~NEED_KERNEL; | ||
2572 | } | ||
2573 | niro | 532 | |
2574 | niro | 914 | } else if (tmplLine->type == LT_HYPER && |
2575 | tmplLine->numElements >= 2) { | ||
2576 | if (needs & NEED_MB) { | ||
2577 | newLine = addLineTmpl(new, tmplLine, newLine, | ||
2578 | newMBKernel + strlen(prefix), config->cfi); | ||
2579 | needs &= ~NEED_MB; | ||
2580 | } | ||
2581 | niro | 532 | |
2582 | niro | 914 | } else if (tmplLine->type == LT_MBMODULE && |
2583 | tmplLine->numElements >= 2) { | ||
2584 | if (new->multiboot) { | ||
2585 | if (needs & NEED_KERNEL) { | ||
2586 | newLine = addLineTmpl(new, tmplLine, newLine, | ||
2587 | newKernelPath + | ||
2588 | strlen(prefix), config->cfi); | ||
2589 | needs &= ~NEED_KERNEL; | ||
2590 | } else if (config->cfi->mbInitRdIsModule && | ||
2591 | (needs & NEED_INITRD)) { | ||
2592 | char *initrdVal; | ||
2593 | initrdVal = getInitrdVal(config, prefix, tmplLine, | ||
2594 | newKernelInitrd, extraInitrds, | ||
2595 | extraInitrdCount); | ||
2596 | newLine = addLineTmpl(new, tmplLine, newLine, | ||
2597 | initrdVal, config->cfi); | ||
2598 | free(initrdVal); | ||
2599 | needs &= ~NEED_INITRD; | ||
2600 | } | ||
2601 | } else if (needs & NEED_KERNEL) { | ||
2602 | /* template is multi but new is not, | ||
2603 | * insert the kernel in the first module slot | ||
2604 | */ | ||
2605 | tmplLine->type = LT_KERNEL; | ||
2606 | free(tmplLine->elements[0].item); | ||
2607 | tmplLine->elements[0].item = | ||
2608 | strdup(getKeywordByType(LT_KERNEL, config->cfi)->key); | ||
2609 | newLine = addLineTmpl(new, tmplLine, newLine, | ||
2610 | newKernelPath + strlen(prefix), config->cfi); | ||
2611 | needs &= ~NEED_KERNEL; | ||
2612 | } else if (needs & NEED_INITRD) { | ||
2613 | char *initrdVal; | ||
2614 | /* template is multi but new is not, | ||
2615 | * insert the initrd in the second module slot | ||
2616 | */ | ||
2617 | tmplLine->type = LT_INITRD; | ||
2618 | free(tmplLine->elements[0].item); | ||
2619 | tmplLine->elements[0].item = | ||
2620 | strdup(getKeywordByType(LT_INITRD, config->cfi)->key); | ||
2621 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); | ||
2622 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); | ||
2623 | free(initrdVal); | ||
2624 | needs &= ~NEED_INITRD; | ||
2625 | } | ||
2626 | niro | 532 | |
2627 | } else if (tmplLine->type == LT_INITRD && | ||
2628 | niro | 914 | tmplLine->numElements >= 2) { |
2629 | if (needs & NEED_INITRD && | ||
2630 | new->multiboot && !template->multiboot && | ||
2631 | config->cfi->mbInitRdIsModule) { | ||
2632 | /* make sure we don't insert the module initrd | ||
2633 | * before the module kernel... if we don't do it here, | ||
2634 | * it will be inserted following the template. | ||
2635 | */ | ||
2636 | if (!needs & NEED_KERNEL) { | ||
2637 | char *initrdVal; | ||
2638 | |||
2639 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); | ||
2640 | newLine = addLine(new, config->cfi, LT_MBMODULE, | ||
2641 | config->secondaryIndent, | ||
2642 | initrdVal); | ||
2643 | free(initrdVal); | ||
2644 | needs &= ~NEED_INITRD; | ||
2645 | } | ||
2646 | } else if (needs & NEED_INITRD) { | ||
2647 | char *initrdVal; | ||
2648 | initrdVal = getInitrdVal(config, prefix, tmplLine, newKernelInitrd, extraInitrds, extraInitrdCount); | ||
2649 | newLine = addLineTmpl(new, tmplLine, newLine, initrdVal, config->cfi); | ||
2650 | free(initrdVal); | ||
2651 | needs &= ~NEED_INITRD; | ||
2652 | niro | 532 | } |
2653 | |||
2654 | } else if (tmplLine->type == LT_TITLE && | ||
2655 | niro | 914 | (needs & NEED_TITLE)) { |
2656 | if (tmplLine->numElements >= 2) { | ||
2657 | newLine = addLineTmpl(new, tmplLine, newLine, | ||
2658 | newKernelTitle, config->cfi); | ||
2659 | needs &= ~NEED_TITLE; | ||
2660 | } else if (tmplLine->numElements == 1 && | ||
2661 | config->cfi->titleBracketed) { | ||
2662 | /* addLineTmpl doesn't handle titleBracketed */ | ||
2663 | newLine = addLine(new, config->cfi, LT_TITLE, | ||
2664 | tmplLine->indent, newKernelTitle); | ||
2665 | needs &= ~NEED_TITLE; | ||
2666 | } | ||
2667 | niro | 532 | |
2668 | niro | 914 | } else { |
2669 | /* pass through other lines from the template */ | ||
2670 | newLine = addLineTmpl(new, tmplLine, newLine, NULL, config->cfi); | ||
2671 | } | ||
2672 | niro | 532 | } |
2673 | niro | 914 | |
2674 | niro | 532 | } else { |
2675 | niro | 914 | /* don't have a template, so start the entry with the |
2676 | * appropriate starting line | ||
2677 | */ | ||
2678 | niro | 1693 | switch (config->cfi->entryStart) { |
2679 | niro | 914 | case LT_KERNEL: |
2680 | if (new->multiboot && config->cfi->mbHyperFirst) { | ||
2681 | /* fall through to LT_HYPER */ | ||
2682 | } else { | ||
2683 | newLine = addLine(new, config->cfi, LT_KERNEL, | ||
2684 | config->primaryIndent, | ||
2685 | newKernelPath + strlen(prefix)); | ||
2686 | needs &= ~NEED_KERNEL; | ||
2687 | break; | ||
2688 | } | ||
2689 | |||
2690 | case LT_HYPER: | ||
2691 | newLine = addLine(new, config->cfi, LT_HYPER, | ||
2692 | config->primaryIndent, | ||
2693 | newMBKernel + strlen(prefix)); | ||
2694 | needs &= ~NEED_MB; | ||
2695 | niro | 532 | break; |
2696 | |||
2697 | niro | 914 | case LT_TITLE: |
2698 | if( useextlinuxmenu != 0 ){ // We just need useextlinuxmenu to not be zero (set above) | ||
2699 | char * templabel; | ||
2700 | int x = 0, y = 0; | ||
2701 | |||
2702 | templabel = strdup(newKernelTitle); | ||
2703 | while( templabel[x]){ | ||
2704 | if( templabel[x] == ' ' ){ | ||
2705 | y = x; | ||
2706 | while( templabel[y] ){ | ||
2707 | templabel[y] = templabel[y+1]; | ||
2708 | y++; | ||
2709 | } | ||
2710 | } | ||
2711 | x++; | ||
2712 | } | ||
2713 | newLine = addLine(new, config->cfi, LT_TITLE, | ||
2714 | config->primaryIndent, templabel); | ||
2715 | free(templabel); | ||
2716 | }else{ | ||
2717 | newLine = addLine(new, config->cfi, LT_TITLE, | ||
2718 | config->primaryIndent, newKernelTitle); | ||
2719 | } | ||
2720 | needs &= ~NEED_TITLE; | ||
2721 | break; | ||
2722 | |||
2723 | default: | ||
2724 | abort(); | ||
2725 | niro | 532 | } |
2726 | } | ||
2727 | |||
2728 | niro | 914 | /* add the remainder of the lines, i.e. those that either |
2729 | * weren't present in the template, or in the case of no template, | ||
2730 | niro | 1693 | * all the lines following the entryStart. |
2731 | niro | 914 | */ |
2732 | if (needs & NEED_TITLE) { | ||
2733 | newLine = addLine(new, config->cfi, LT_TITLE, | ||
2734 | config->secondaryIndent, | ||
2735 | newKernelTitle); | ||
2736 | needs &= ~NEED_TITLE; | ||
2737 | niro | 532 | } |
2738 | niro | 914 | if ((needs & NEED_MB) && config->cfi->mbHyperFirst) { |
2739 | newLine = addLine(new, config->cfi, LT_HYPER, | ||
2740 | config->secondaryIndent, | ||
2741 | newMBKernel + strlen(prefix)); | ||
2742 | needs &= ~NEED_MB; | ||
2743 | } | ||
2744 | if (needs & NEED_KERNEL) { | ||
2745 | newLine = addLine(new, config->cfi, | ||
2746 | (new->multiboot && getKeywordByType(LT_MBMODULE, | ||
2747 | config->cfi)) ? | ||
2748 | LT_MBMODULE : LT_KERNEL, | ||
2749 | config->secondaryIndent, | ||
2750 | newKernelPath + strlen(prefix)); | ||
2751 | needs &= ~NEED_KERNEL; | ||
2752 | } | ||
2753 | if (needs & NEED_MB) { | ||
2754 | newLine = addLine(new, config->cfi, LT_HYPER, | ||
2755 | config->secondaryIndent, | ||
2756 | newMBKernel + strlen(prefix)); | ||
2757 | needs &= ~NEED_MB; | ||
2758 | } | ||
2759 | if (needs & NEED_INITRD) { | ||
2760 | char *initrdVal; | ||
2761 | initrdVal = getInitrdVal(config, prefix, NULL, newKernelInitrd, extraInitrds, extraInitrdCount); | ||
2762 | newLine = addLine(new, config->cfi, | ||
2763 | (new->multiboot && getKeywordByType(LT_MBMODULE, | ||
2764 | config->cfi)) ? | ||
2765 | LT_MBMODULE : LT_INITRD, | ||
2766 | config->secondaryIndent, | ||
2767 | initrdVal); | ||
2768 | free(initrdVal); | ||
2769 | needs &= ~NEED_INITRD; | ||
2770 | } | ||
2771 | niro | 532 | |
2772 | niro | 914 | if (needs) { |
2773 | printf(_("grubby: needs=%d, aborting\n"), needs); | ||
2774 | abort(); | ||
2775 | } | ||
2776 | |||
2777 | niro | 532 | if (updateImage(config, "0", prefix, newKernelArgs, NULL, |
2778 | newMBKernelArgs, NULL)) return 1; | ||
2779 | |||
2780 | return 0; | ||
2781 | } | ||
2782 | |||
2783 | niro | 914 | static void traceback(int signum) |
2784 | { | ||
2785 | void *array[40]; | ||
2786 | size_t size; | ||
2787 | |||
2788 | signal(SIGSEGV, SIG_DFL); | ||
2789 | memset(array, '\0', sizeof (array)); | ||
2790 | size = backtrace(array, 40); | ||
2791 | |||
2792 | fprintf(stderr, "grubby recieved SIGSEGV! Backtrace (%ld):\n", | ||
2793 | (unsigned long)size); | ||
2794 | backtrace_symbols_fd(array, size, STDERR_FILENO); | ||
2795 | exit(1); | ||
2796 | } | ||
2797 | |||
2798 | niro | 532 | int main(int argc, const char ** argv) { |
2799 | poptContext optCon; | ||
2800 | char * grubConfig = NULL; | ||
2801 | char * outputFile = NULL; | ||
2802 | int arg = 0; | ||
2803 | int flags = 0; | ||
2804 | int badImageOkay = 0; | ||
2805 | int configureLilo = 0, configureELilo = 0, configureGrub = 0; | ||
2806 | int configureYaboot = 0, configureSilo = 0, configureZipl = 0; | ||
2807 | niro | 914 | int configureExtLinux = 0; |
2808 | niro | 532 | int bootloaderProbe = 0; |
2809 | niro | 914 | int extraInitrdCount = 0; |
2810 | niro | 532 | char * updateKernelPath = NULL; |
2811 | char * newKernelPath = NULL; | ||
2812 | char * removeKernelPath = NULL; | ||
2813 | char * newKernelArgs = NULL; | ||
2814 | char * newKernelInitrd = NULL; | ||
2815 | char * newKernelTitle = NULL; | ||
2816 | char * newKernelVersion = NULL; | ||
2817 | char * newMBKernel = NULL; | ||
2818 | char * newMBKernelArgs = NULL; | ||
2819 | char * removeMBKernelArgs = NULL; | ||
2820 | char * removeMBKernel = NULL; | ||
2821 | char * bootPrefix = NULL; | ||
2822 | char * defaultKernel = NULL; | ||
2823 | char * removeArgs = NULL; | ||
2824 | char * kernelInfo = NULL; | ||
2825 | niro | 914 | char * extraInitrds[MAX_EXTRA_INITRDS] = { NULL }; |
2826 | niro | 532 | const char * chptr = NULL; |
2827 | struct configFileInfo * cfi = NULL; | ||
2828 | struct grubConfig * config; | ||
2829 | struct singleEntry * template = NULL; | ||
2830 | int copyDefault = 0, makeDefault = 0; | ||
2831 | int displayDefault = 0; | ||
2832 | struct poptOption options[] = { | ||
2833 | { "add-kernel", 0, POPT_ARG_STRING, &newKernelPath, 0, | ||
2834 | _("add an entry for the specified kernel"), _("kernel-path") }, | ||
2835 | { "add-multiboot", 0, POPT_ARG_STRING, &newMBKernel, 0, | ||
2836 | _("add an entry for the specified multiboot kernel"), NULL }, | ||
2837 | { "args", 0, POPT_ARG_STRING, &newKernelArgs, 0, | ||
2838 | _("default arguments for the new kernel or new arguments for " | ||
2839 | "kernel being updated"), _("args") }, | ||
2840 | { "mbargs", 0, POPT_ARG_STRING, &newMBKernelArgs, 0, | ||
2841 | _("default arguments for the new multiboot kernel or " | ||
2842 | "new arguments for multiboot kernel being updated"), NULL }, | ||
2843 | { "bad-image-okay", 0, 0, &badImageOkay, 0, | ||
2844 | _("don't sanity check images in boot entries (for testing only)"), | ||
2845 | NULL }, | ||
2846 | { "boot-filesystem", 0, POPT_ARG_STRING, &bootPrefix, 0, | ||
2847 | _("filestystem which contains /boot directory (for testing only)"), | ||
2848 | _("bootfs") }, | ||
2849 | #if defined(__i386__) || defined(__x86_64__) | ||
2850 | { "bootloader-probe", 0, POPT_ARG_NONE, &bootloaderProbe, 0, | ||
2851 | _("check if lilo is installed on lilo.conf boot sector") }, | ||
2852 | #endif | ||
2853 | { "config-file", 'c', POPT_ARG_STRING, &grubConfig, 0, | ||
2854 | _("path to grub config file to update (\"-\" for stdin)"), | ||
2855 | _("path") }, | ||
2856 | { "copy-default", 0, 0, ©Default, 0, | ||
2857 | _("use the default boot entry as a template for the new entry " | ||
2858 | "being added; if the default is not a linux image, or if " | ||
2859 | "the kernel referenced by the default image does not exist, " | ||
2860 | "the first linux entry whose kernel does exist is used as the " | ||
2861 | "template"), NULL }, | ||
2862 | { "default-kernel", 0, 0, &displayDefault, 0, | ||
2863 | _("display the path of the default kernel") }, | ||
2864 | { "elilo", 0, POPT_ARG_NONE, &configureELilo, 0, | ||
2865 | _("configure elilo bootloader") }, | ||
2866 | niro | 914 | { "extlinux", 0, POPT_ARG_NONE, &configureExtLinux, 0, |
2867 | _("configure extlinux bootloader (from syslinux)") }, | ||
2868 | niro | 532 | { "grub", 0, POPT_ARG_NONE, &configureGrub, 0, |
2869 | _("configure grub bootloader") }, | ||
2870 | { "info", 0, POPT_ARG_STRING, &kernelInfo, 0, | ||
2871 | _("display boot information for specified kernel"), | ||
2872 | _("kernel-path") }, | ||
2873 | { "initrd", 0, POPT_ARG_STRING, &newKernelInitrd, 0, | ||
2874 | _("initrd image for the new kernel"), _("initrd-path") }, | ||
2875 | niro | 914 | { "extra-initrd", 'i', POPT_ARG_STRING, NULL, 'i', |
2876 | _("auxilliary initrd image for things other than the new kernel"), _("initrd-path") }, | ||
2877 | niro | 532 | { "lilo", 0, POPT_ARG_NONE, &configureLilo, 0, |
2878 | _("configure lilo bootloader") }, | ||
2879 | { "make-default", 0, 0, &makeDefault, 0, | ||
2880 | _("make the newly added entry the default boot entry"), NULL }, | ||
2881 | { "output-file", 'o', POPT_ARG_STRING, &outputFile, 0, | ||
2882 | _("path to output updated config file (\"-\" for stdout)"), | ||
2883 | _("path") }, | ||
2884 | { "remove-args", 0, POPT_ARG_STRING, &removeArgs, 0, | ||
2885 | _("remove kernel arguments"), NULL }, | ||
2886 | { "remove-mbargs", 0, POPT_ARG_STRING, &removeMBKernelArgs, 0, | ||
2887 | _("remove multiboot kernel arguments"), NULL }, | ||
2888 | { "remove-kernel", 0, POPT_ARG_STRING, &removeKernelPath, 0, | ||
2889 | _("remove all entries for the specified kernel"), | ||
2890 | _("kernel-path") }, | ||
2891 | { "remove-multiboot", 0, POPT_ARG_STRING, &removeMBKernel, 0, | ||
2892 | _("remove all entries for the specified multiboot kernel"), NULL }, | ||
2893 | { "set-default", 0, POPT_ARG_STRING, &defaultKernel, 0, | ||
2894 | _("make the first entry referencing the specified kernel " | ||
2895 | "the default"), _("kernel-path") }, | ||
2896 | { "silo", 0, POPT_ARG_NONE, &configureSilo, 0, | ||
2897 | _("configure silo bootloader") }, | ||
2898 | { "title", 0, POPT_ARG_STRING, &newKernelTitle, 0, | ||
2899 | _("title to use for the new kernel entry"), _("entry-title") }, | ||
2900 | { "update-kernel", 0, POPT_ARG_STRING, &updateKernelPath, 0, | ||
2901 | _("updated information for the specified kernel"), | ||
2902 | _("kernel-path") }, | ||
2903 | { "version", 'v', 0, NULL, 'v', | ||
2904 | _("print the version of this program and exit"), NULL }, | ||
2905 | { "yaboot", 0, POPT_ARG_NONE, &configureYaboot, 0, | ||
2906 | _("configure yaboot bootloader") }, | ||
2907 | { "zipl", 0, POPT_ARG_NONE, &configureZipl, 0, | ||
2908 | _("configure zipl bootloader") }, | ||
2909 | POPT_AUTOHELP | ||
2910 | { 0, 0, 0, 0, 0 } | ||
2911 | }; | ||
2912 | |||
2913 | niro | 914 | useextlinuxmenu=0; |
2914 | |||
2915 | signal(SIGSEGV, traceback); | ||
2916 | |||
2917 | niro | 532 | optCon = poptGetContext("grubby", argc, argv, options, 0); |
2918 | poptReadDefaultConfig(optCon, 1); | ||
2919 | |||
2920 | while ((arg = poptGetNextOpt(optCon)) >= 0) { | ||
2921 | switch (arg) { | ||
2922 | case 'v': | ||
2923 | printf("grubby version %s\n", VERSION); | ||
2924 | exit(0); | ||
2925 | break; | ||
2926 | niro | 914 | case 'i': |
2927 | if (extraInitrdCount < MAX_EXTRA_INITRDS) { | ||
2928 | extraInitrds[extraInitrdCount++] = strdup(poptGetOptArg(optCon)); | ||
2929 | } else { | ||
2930 | fprintf(stderr, _("grubby: extra initrd maximum is %d\n"), extraInitrdCount); | ||
2931 | return 1; | ||
2932 | } | ||
2933 | break; | ||
2934 | niro | 532 | } |
2935 | } | ||
2936 | |||
2937 | if (arg < -1) { | ||
2938 | fprintf(stderr, _("grubby: bad argument %s: %s\n"), | ||
2939 | poptBadOption(optCon, POPT_BADOPTION_NOALIAS), | ||
2940 | poptStrerror(arg)); | ||
2941 | return 1; | ||
2942 | } | ||
2943 | |||
2944 | if ((chptr = poptGetArg(optCon))) { | ||
2945 | fprintf(stderr, _("grubby: unexpected argument %s\n"), chptr); | ||
2946 | return 1; | ||
2947 | } | ||
2948 | |||
2949 | if ((configureLilo + configureGrub + configureELilo + | ||
2950 | niro | 914 | configureYaboot + configureSilo + configureZipl + |
2951 | configureExtLinux ) > 1) { | ||
2952 | niro | 532 | fprintf(stderr, _("grubby: cannot specify multiple bootloaders\n")); |
2953 | return 1; | ||
2954 | } else if (bootloaderProbe && grubConfig) { | ||
2955 | fprintf(stderr, | ||
2956 | _("grubby: cannot specify config file with --bootloader-probe\n")); | ||
2957 | return 1; | ||
2958 | } else if (configureLilo) { | ||
2959 | cfi = &liloConfigType; | ||
2960 | } else if (configureGrub) { | ||
2961 | cfi = &grubConfigType; | ||
2962 | } else if (configureELilo) { | ||
2963 | cfi = &eliloConfigType; | ||
2964 | } else if (configureYaboot) { | ||
2965 | cfi = &yabootConfigType; | ||
2966 | } else if (configureSilo) { | ||
2967 | cfi = &siloConfigType; | ||
2968 | } else if (configureZipl) { | ||
2969 | cfi = &ziplConfigType; | ||
2970 | niro | 914 | } else if (configureExtLinux) { |
2971 | cfi = &extlinuxConfigType; | ||
2972 | useextlinuxmenu=1; | ||
2973 | niro | 532 | } |
2974 | |||
2975 | if (!cfi) { | ||
2976 | #ifdef __ia64__ | ||
2977 | cfi = &eliloConfigType; | ||
2978 | #elif __powerpc__ | ||
2979 | cfi = &yabootConfigType; | ||
2980 | #elif __sparc__ | ||
2981 | cfi = &siloConfigType; | ||
2982 | #elif __s390__ | ||
2983 | cfi = &ziplConfigType; | ||
2984 | #elif __s390x__ | ||
2985 | cfi = &ziplConfigtype; | ||
2986 | #else | ||
2987 | cfi = &grubConfigType; | ||
2988 | #endif | ||
2989 | } | ||
2990 | |||
2991 | if (!grubConfig) | ||
2992 | grubConfig = cfi->defaultConfig; | ||
2993 | |||
2994 | if (bootloaderProbe && (displayDefault || kernelInfo || newKernelVersion || | ||
2995 | newKernelPath || removeKernelPath || makeDefault || | ||
2996 | defaultKernel)) { | ||
2997 | fprintf(stderr, _("grubby: --bootloader-probe may not be used with " | ||
2998 | "specified option")); | ||
2999 | return 1; | ||
3000 | } | ||
3001 | |||
3002 | if ((displayDefault || kernelInfo) && (newKernelVersion || newKernelPath || | ||
3003 | removeKernelPath)) { | ||
3004 | fprintf(stderr, _("grubby: --default-kernel and --info may not " | ||
3005 | "be used when adding or removing kernels\n")); | ||
3006 | return 1; | ||
3007 | } | ||
3008 | |||
3009 | if (newKernelPath && !newKernelTitle) { | ||
3010 | fprintf(stderr, _("grubby: kernel title must be specified\n")); | ||
3011 | return 1; | ||
3012 | niro | 1156 | } else if (!newKernelPath && (newKernelTitle || copyDefault || |
3013 | (newKernelInitrd && !updateKernelPath)|| | ||
3014 | niro | 914 | makeDefault || extraInitrdCount > 0)) { |
3015 | niro | 532 | fprintf(stderr, _("grubby: kernel path expected\n")); |
3016 | return 1; | ||
3017 | } | ||
3018 | |||
3019 | if (newKernelPath && updateKernelPath) { | ||
3020 | fprintf(stderr, _("grubby: --add-kernel and --update-kernel may" | ||
3021 | "not be used together")); | ||
3022 | return 1; | ||
3023 | } | ||
3024 | |||
3025 | if (makeDefault && defaultKernel) { | ||
3026 | fprintf(stderr, _("grubby: --make-default and --default-kernel " | ||
3027 | "may not be used together\n")); | ||
3028 | return 1; | ||
3029 | } else if (defaultKernel && removeKernelPath && | ||
3030 | !strcmp(defaultKernel, removeKernelPath)) { | ||
3031 | fprintf(stderr, _("grubby: cannot make removed kernel the default\n")); | ||
3032 | return 1; | ||
3033 | } else if (defaultKernel && newKernelPath && | ||
3034 | !strcmp(defaultKernel, newKernelPath)) { | ||
3035 | makeDefault = 1; | ||
3036 | defaultKernel = NULL; | ||
3037 | } | ||
3038 | |||
3039 | if (!strcmp(grubConfig, "-") && !outputFile) { | ||
3040 | fprintf(stderr, _("grubby: output file must be specified if stdin " | ||
3041 | "is used\n")); | ||
3042 | return 1; | ||
3043 | } | ||
3044 | |||
3045 | if (!removeKernelPath && !newKernelPath && !displayDefault && !defaultKernel | ||
3046 | && !kernelInfo && !bootloaderProbe && !updateKernelPath | ||
3047 | && !removeMBKernel) { | ||
3048 | fprintf(stderr, _("grubby: no action specified\n")); | ||
3049 | return 1; | ||
3050 | } | ||
3051 | |||
3052 | flags |= badImageOkay ? GRUBBY_BADIMAGE_OKAY : 0; | ||
3053 | |||
3054 | if (cfi->needsBootPrefix) { | ||
3055 | if (!bootPrefix) { | ||
3056 | bootPrefix = findBootPrefix(); | ||
3057 | if (!bootPrefix) return 1; | ||
3058 | } else { | ||
3059 | /* this shouldn't end with a / */ | ||
3060 | if (bootPrefix[strlen(bootPrefix) - 1] == '/') | ||
3061 | bootPrefix[strlen(bootPrefix) - 1] = '\0'; | ||
3062 | } | ||
3063 | } else { | ||
3064 | bootPrefix = ""; | ||
3065 | } | ||
3066 | |||
3067 | niro | 914 | if (!cfi->mbAllowExtraInitRds && |
3068 | extraInitrdCount > 0) { | ||
3069 | fprintf(stderr, _("grubby: %s doesn't allow multiple initrds\n"), cfi->defaultConfig); | ||
3070 | return 1; | ||
3071 | } | ||
3072 | |||
3073 | niro | 532 | if (bootloaderProbe) { |
3074 | niro | 914 | int lrc = 0, grc = 0, erc = 0; |
3075 | niro | 532 | struct grubConfig * lconfig, * gconfig; |
3076 | |||
3077 | if (!access(grubConfigType.defaultConfig, F_OK)) { | ||
3078 | gconfig = readConfig(grubConfigType.defaultConfig, &grubConfigType); | ||
3079 | if (!gconfig) | ||
3080 | grc = 1; | ||
3081 | else | ||
3082 | grc = checkForGrub(gconfig); | ||
3083 | } | ||
3084 | |||
3085 | if (!access(liloConfigType.defaultConfig, F_OK)) { | ||
3086 | lconfig = readConfig(liloConfigType.defaultConfig, &liloConfigType); | ||
3087 | if (!lconfig) | ||
3088 | lrc = 1; | ||
3089 | else | ||
3090 | lrc = checkForLilo(lconfig); | ||
3091 | } | ||
3092 | |||
3093 | niro | 914 | if (!access(extlinuxConfigType.defaultConfig, F_OK)) { |
3094 | lconfig = readConfig(extlinuxConfigType.defaultConfig, &extlinuxConfigType); | ||
3095 | if (!lconfig) | ||
3096 | erc = 1; | ||
3097 | else | ||
3098 | erc = checkForExtLinux(lconfig); | ||
3099 | } | ||
3100 | |||
3101 | niro | 532 | if (lrc == 1 || grc == 1) return 1; |
3102 | |||
3103 | if (lrc == 2) printf("lilo\n"); | ||
3104 | if (grc == 2) printf("grub\n"); | ||
3105 | niro | 914 | if (erc == 2) printf("extlinux\n"); |
3106 | niro | 532 | |
3107 | return 0; | ||
3108 | } | ||
3109 | |||
3110 | config = readConfig(grubConfig, cfi); | ||
3111 | if (!config) return 1; | ||
3112 | |||
3113 | if (displayDefault) { | ||
3114 | struct singleLine * line; | ||
3115 | struct singleEntry * entry; | ||
3116 | char * rootspec; | ||
3117 | |||
3118 | if (config->defaultImage == -1) return 0; | ||
3119 | entry = findEntryByIndex(config, config->defaultImage); | ||
3120 | if (!entry) return 0; | ||
3121 | if (!suitableImage(entry, bootPrefix, 0, flags)) return 0; | ||
3122 | |||
3123 | niro | 914 | line = getLineByType(LT_KERNEL|LT_HYPER, entry->lines); |
3124 | niro | 532 | if (!line) return 0; |
3125 | |||
3126 | rootspec = getRootSpecifier(line->elements[1].item); | ||
3127 | printf("%s%s\n", bootPrefix, line->elements[1].item + | ||
3128 | ((rootspec != NULL) ? strlen(rootspec) : 0)); | ||
3129 | |||
3130 | return 0; | ||
3131 | } else if (kernelInfo) | ||
3132 | return displayInfo(config, kernelInfo, bootPrefix); | ||
3133 | |||
3134 | if (copyDefault) { | ||
3135 | template = findTemplate(config, bootPrefix, NULL, 0, flags); | ||
3136 | if (!template) return 1; | ||
3137 | } | ||
3138 | |||
3139 | markRemovedImage(config, removeKernelPath, bootPrefix); | ||
3140 | markRemovedImage(config, removeMBKernel, bootPrefix); | ||
3141 | setDefaultImage(config, newKernelPath != NULL, defaultKernel, makeDefault, | ||
3142 | bootPrefix, flags); | ||
3143 | setFallbackImage(config, newKernelPath != NULL); | ||
3144 | if (updateImage(config, updateKernelPath, bootPrefix, newKernelArgs, | ||
3145 | removeArgs, newMBKernelArgs, removeMBKernelArgs)) return 1; | ||
3146 | niro | 1156 | if (updateKernelPath && newKernelInitrd) { |
3147 | if (updateInitrd(config, updateKernelPath, bootPrefix, | ||
3148 | newKernelInitrd)) return 1; | ||
3149 | } | ||
3150 | niro | 532 | if (addNewKernel(config, template, bootPrefix, newKernelPath, |
3151 | newKernelTitle, newKernelArgs, newKernelInitrd, | ||
3152 | niro | 914 | extraInitrds, extraInitrdCount, |
3153 | niro | 532 | newMBKernel, newMBKernelArgs)) return 1; |
3154 | |||
3155 | |||
3156 | if (numEntries(config) == 0) { | ||
3157 | fprintf(stderr, _("grubby: doing this would leave no kernel entries. " | ||
3158 | "Not writing out new config.\n")); | ||
3159 | return 1; | ||
3160 | } | ||
3161 | |||
3162 | if (!outputFile) | ||
3163 | outputFile = grubConfig; | ||
3164 | |||
3165 | return writeConfig(config, outputFile, bootPrefix); | ||
3166 | } |