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USB Storage: Sierra: Non-configurable TRU-Install
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / scripts / kconfig / confdata.c
blobdf6a188b993002ae7d2ca82cb12e8b853aefcb42
1 /*
2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
4 */
5
6 #include <sys/stat.h>
7 #include <ctype.h>
8 #include <fcntl.h>
9 #include <stdio.h>
10 #include <stdlib.h>
11 #include <string.h>
12 #include <time.h>
13 #include <unistd.h>
14
15 #define LKC_DIRECT_LINK
16 #include "lkc.h"
17
18 static void conf_warning(const char *fmt, ...)
19 __attribute__ ((format (printf, 1, 2)));
20
21 static const char *conf_filename;
22 static int conf_lineno, conf_warnings, conf_unsaved;
23
24 const char conf_defname[] = "arch/$ARCH/defconfig";
25
26 static void conf_warning(const char *fmt, ...)
27 {
28 va_list ap;
29 va_start(ap, fmt);
30 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
31 vfprintf(stderr, fmt, ap);
32 fprintf(stderr, "\n");
33 va_end(ap);
34 conf_warnings++;
35 }
36
37 const char *conf_get_configname(void)
38 {
39 char *name = getenv("KCONFIG_CONFIG");
40
41 return name ? name : ".config";
42 }
43
44 static char *conf_expand_value(const char *in)
45 {
46 struct symbol *sym;
47 const char *src;
48 static char res_value[SYMBOL_MAXLENGTH];
49 char *dst, name[SYMBOL_MAXLENGTH];
50
51 res_value[0] = 0;
52 dst = name;
53 while ((src = strchr(in, '$'))) {
54 strncat(res_value, in, src - in);
55 src++;
56 dst = name;
57 while (isalnum(*src) || *src == '_')
58 *dst++ = *src++;
59 *dst = 0;
60 sym = sym_lookup(name, 0);
61 sym_calc_value(sym);
62 strcat(res_value, sym_get_string_value(sym));
63 in = src;
64 }
65 strcat(res_value, in);
66
67 return res_value;
68 }
69
70 char *conf_get_default_confname(void)
71 {
72 struct stat buf;
73 static char fullname[PATH_MAX+1];
74 char *env, *name;
75
76 name = conf_expand_value(conf_defname);
77 env = getenv(SRCTREE);
78 if (env) {
79 sprintf(fullname, "%s/%s", env, name);
80 if (!stat(fullname, &buf))
81 return fullname;
82 }
83 return name;
84 }
85
86 static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
87 {
88 char *p2;
89
90 switch (sym->type) {
91 case S_TRISTATE:
92 if (p[0] == 'm') {
93 sym->def[def].tri = mod;
94 sym->flags |= def_flags;
95 break;
96 }
97 case S_BOOLEAN:
98 if (p[0] == 'y') {
99 sym->def[def].tri = yes;
100 sym->flags |= def_flags;
101 break;
102 }
103 if (p[0] == 'n') {
104 sym->def[def].tri = no;
105 sym->flags |= def_flags;
106 break;
107 }
108 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
109 break;
110 case S_OTHER:
111 if (*p != '"') {
112 for (p2 = p; *p2 && !isspace(*p2); p2++)
113 ;
114 sym->type = S_STRING;
115 goto done;
116 }
117 case S_STRING:
118 if (*p++ != '"')
119 break;
120 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
121 if (*p2 == '"') {
122 *p2 = 0;
123 break;
124 }
125 memmove(p2, p2 + 1, strlen(p2));
126 }
127 if (!p2) {
128 conf_warning("invalid string found");
129 return 1;
130 }
131 case S_INT:
132 case S_HEX:
133 done:
134 if (sym_string_valid(sym, p)) {
135 sym->def[def].val = strdup(p);
136 sym->flags |= def_flags;
137 } else {
138 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
139 return 1;
140 }
141 break;
142 default:
143 ;
144 }
145 return 0;
146 }
147
148 int conf_read_simple(const char *name, int def)
149 {
150 FILE *in = NULL;
151 char line[1024];
152 char *p, *p2;
153 struct symbol *sym;
154 int i, def_flags;
155
156 if (name) {
157 in = zconf_fopen(name);
158 } else {
159 struct property *prop;
160
161 name = conf_get_configname();
162 in = zconf_fopen(name);
163 if (in)
164 goto load;
165 sym_add_change_count(1);
166 if (!sym_defconfig_list)
167 return 1;
168
169 for_all_defaults(sym_defconfig_list, prop) {
170 if (expr_calc_value(prop->visible.expr) == no ||
171 prop->expr->type != E_SYMBOL)
172 continue;
173 name = conf_expand_value(prop->expr->left.sym->name);
174 in = zconf_fopen(name);
175 if (in) {
176 printf(_("#\n"
177 "# using defaults found in %s\n"
178 "#\n"), name);
179 goto load;
180 }
181 }
182 }
183 if (!in)
184 return 1;
185
186 load:
187 conf_filename = name;
188 conf_lineno = 0;
189 conf_warnings = 0;
190 conf_unsaved = 0;
191
192 def_flags = SYMBOL_DEF << def;
193 for_all_symbols(i, sym) {
194 sym->flags |= SYMBOL_CHANGED;
195 sym->flags &= ~(def_flags|SYMBOL_VALID);
196 if (sym_is_choice(sym))
197 sym->flags |= def_flags;
198 switch (sym->type) {
199 case S_INT:
200 case S_HEX:
201 case S_STRING:
202 if (sym->def[def].val)
203 free(sym->def[def].val);
204 default:
205 sym->def[def].val = NULL;
206 sym->def[def].tri = no;
207 }
208 }
209
210 while (fgets(line, sizeof(line), in)) {
211 conf_lineno++;
212 sym = NULL;
213 switch (line[0]) {
214 case '#':
215 if (memcmp(line + 2, "CONFIG_", 7))
216 continue;
217 p = strchr(line + 9, ' ');
218 if (!p)
219 continue;
220 *p++ = 0;
221 if (strncmp(p, "is not set", 10))
222 continue;
223 if (def == S_DEF_USER) {
224 sym = sym_find(line + 9);
225 if (!sym)
226 break;
227 } else {
228 sym = sym_lookup(line + 9, 0);
229 if (sym->type == S_UNKNOWN)
230 sym->type = S_BOOLEAN;
231 }
232 if (sym->flags & def_flags) {
233 conf_warning("override: reassigning to symbol %s", sym->name);
234 }
235 switch (sym->type) {
236 case S_BOOLEAN:
237 case S_TRISTATE:
238 sym->def[def].tri = no;
239 sym->flags |= def_flags;
240 break;
241 default:
242 ;
243 }
244 break;
245 case 'C':
246 if (memcmp(line, "CONFIG_", 7)) {
247 conf_warning("unexpected data");
248 continue;
249 }
250 p = strchr(line + 7, '=');
251 if (!p)
252 continue;
253 *p++ = 0;
254 p2 = strchr(p, '\n');
255 if (p2) {
256 *p2-- = 0;
257 if (*p2 == '\r')
258 *p2 = 0;
259 }
260 if (def == S_DEF_USER) {
261 sym = sym_find(line + 7);
262 if (!sym)
263 break;
264 } else {
265 sym = sym_lookup(line + 7, 0);
266 if (sym->type == S_UNKNOWN)
267 sym->type = S_OTHER;
268 }
269 if (sym->flags & def_flags) {
270 conf_warning("override: reassigning to symbol %s", sym->name);
271 }
272 if (conf_set_sym_val(sym, def, def_flags, p))
273 continue;
274 break;
275 case '\r':
276 case '\n':
277 break;
278 default:
279 conf_warning("unexpected data");
280 continue;
281 }
282 if (sym && sym_is_choice_value(sym)) {
283 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
284 switch (sym->def[def].tri) {
285 case no:
286 break;
287 case mod:
288 if (cs->def[def].tri == yes) {
289 conf_warning("%s creates inconsistent choice state", sym->name);
290 cs->flags &= ~def_flags;
291 }
292 break;
293 case yes:
294 if (cs->def[def].tri != no)
295 conf_warning("override: %s changes choice state", sym->name);
296 cs->def[def].val = sym;
297 break;
298 }
299 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
300 }
301 }
302 fclose(in);
303
304 if (modules_sym)
305 sym_calc_value(modules_sym);
306 return 0;
307 }
308
309 int conf_read(const char *name)
310 {
311 struct symbol *sym, *choice_sym;
312 struct property *prop;
313 struct expr *e;
314 int i, flags;
315
316 sym_set_change_count(0);
317
318 if (conf_read_simple(name, S_DEF_USER))
319 return 1;
320
321 for_all_symbols(i, sym) {
322 sym_calc_value(sym);
323 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
324 goto sym_ok;
325 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
326 /* check that calculated value agrees with saved value */
327 switch (sym->type) {
328 case S_BOOLEAN:
329 case S_TRISTATE:
330 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
331 break;
332 if (!sym_is_choice(sym))
333 goto sym_ok;
334 default:
335 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
336 goto sym_ok;
337 break;
338 }
339 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
340 /* no previous value and not saved */
341 goto sym_ok;
342 conf_unsaved++;
343 /* maybe print value in verbose mode... */
344 sym_ok:
345 if (!sym_is_choice(sym))
346 continue;
347 /* The choice symbol only has a set value (and thus is not new)
348 * if all its visible childs have values.
349 */
350 prop = sym_get_choice_prop(sym);
351 flags = sym->flags;
352 expr_list_for_each_sym(prop->expr, e, choice_sym)
353 if (choice_sym->visible != no)
354 flags &= choice_sym->flags;
355 sym->flags &= flags | ~SYMBOL_DEF_USER;
356 }
357
358 for_all_symbols(i, sym) {
359 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
360 /* Reset values of generates values, so they'll appear
361 * as new, if they should become visible, but that
362 * doesn't quite work if the Kconfig and the saved
363 * configuration disagree.
364 */
365 if (sym->visible == no && !conf_unsaved)
366 sym->flags &= ~SYMBOL_DEF_USER;
367 switch (sym->type) {
368 case S_STRING:
369 case S_INT:
370 case S_HEX:
371 /* Reset a string value if it's out of range */
372 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
373 break;
374 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
375 conf_unsaved++;
376 break;
377 default:
378 break;
379 }
380 }
381 }
382
383 sym_add_change_count(conf_warnings || conf_unsaved);
384
385 return 0;
386 }
387
388 int conf_write(const char *name)
389 {
390 FILE *out;
391 struct symbol *sym;
392 struct menu *menu;
393 const char *basename;
394 char dirname[128], tmpname[128], newname[128];
395 int type, l;
396 const char *str;
397 time_t now;
398 int use_timestamp = 1;
399 char *env;
400
401 dirname[0] = 0;
402 if (name && name[0]) {
403 struct stat st;
404 char *slash;
405
406 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
407 strcpy(dirname, name);
408 strcat(dirname, "/");
409 basename = conf_get_configname();
410 } else if ((slash = strrchr(name, '/'))) {
411 int size = slash - name + 1;
412 memcpy(dirname, name, size);
413 dirname[size] = 0;
414 if (slash[1])
415 basename = slash + 1;
416 else
417 basename = conf_get_configname();
418 } else
419 basename = name;
420 } else
421 basename = conf_get_configname();
422
423 sprintf(newname, "%s%s", dirname, basename);
424 env = getenv("KCONFIG_OVERWRITECONFIG");
425 if (!env || !*env) {
426 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
427 out = fopen(tmpname, "w");
428 } else {
429 *tmpname = 0;
430 out = fopen(newname, "w");
431 }
432 if (!out)
433 return 1;
434
435 sym = sym_lookup("KERNELVERSION", 0);
436 sym_calc_value(sym);
437 time(&now);
438 env = getenv("KCONFIG_NOTIMESTAMP");
439 if (env && *env)
440 use_timestamp = 0;
441
442 fprintf(out, _("#\n"
443 "# Automatically generated make config: don't edit\n"
444 "# Linux kernel version: %s\n"
445 "%s%s"
446 "#\n"),
447 sym_get_string_value(sym),
448 use_timestamp ? "# " : "",
449 use_timestamp ? ctime(&now) : "");
450
451 if (!conf_get_changed())
452 sym_clear_all_valid();
453
454 menu = rootmenu.list;
455 while (menu) {
456 sym = menu->sym;
457 if (!sym) {
458 if (!menu_is_visible(menu))
459 goto next;
460 str = menu_get_prompt(menu);
461 fprintf(out, "\n"
462 "#\n"
463 "# %s\n"
464 "#\n", str);
465 } else if (!(sym->flags & SYMBOL_CHOICE)) {
466 sym_calc_value(sym);
467 if (!(sym->flags & SYMBOL_WRITE))
468 goto next;
469 sym->flags &= ~SYMBOL_WRITE;
470 type = sym->type;
471 if (type == S_TRISTATE) {
472 sym_calc_value(modules_sym);
473 if (modules_sym->curr.tri == no)
474 type = S_BOOLEAN;
475 }
476 switch (type) {
477 case S_BOOLEAN:
478 case S_TRISTATE:
479 switch (sym_get_tristate_value(sym)) {
480 case no:
481 fprintf(out, "# CONFIG_%s is not set\n", sym->name);
482 break;
483 case mod:
484 fprintf(out, "CONFIG_%s=m\n", sym->name);
485 break;
486 case yes:
487 fprintf(out, "CONFIG_%s=y\n", sym->name);
488 break;
489 }
490 break;
491 case S_STRING:
492 str = sym_get_string_value(sym);
493 fprintf(out, "CONFIG_%s=\"", sym->name);
494 while (1) {
495 l = strcspn(str, "\"\\");
496 if (l) {
497 fwrite(str, l, 1, out);
498 str += l;
499 }
500 if (!*str)
501 break;
502 fprintf(out, "\\%c", *str++);
503 }
504 fputs("\"\n", out);
505 break;
506 case S_HEX:
507 str = sym_get_string_value(sym);
508 if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
509 fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
510 break;
511 }
512 case S_INT:
513 str = sym_get_string_value(sym);
514 fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
515 break;
516 }
517 }
518
519 next:
520 if (menu->list) {
521 menu = menu->list;
522 continue;
523 }
524 if (menu->next)
525 menu = menu->next;
526 else while ((menu = menu->parent)) {
527 if (menu->next) {
528 menu = menu->next;
529 break;
530 }
531 }
532 }
533 fclose(out);
534
535 if (*tmpname) {
536 strcat(dirname, basename);
537 strcat(dirname, ".old");
538 rename(newname, dirname);
539 if (rename(tmpname, newname))
540 return 1;
541 }
542
543 printf(_("#\n"
544 "# configuration written to %s\n"
545 "#\n"), newname);
546
547 sym_set_change_count(0);
548
549 return 0;
550 }
551
552 int conf_split_config(void)
553 {
554 char *name, path[128];
555 char *s, *d, c;
556 struct symbol *sym;
557 struct stat sb;
558 int res, i, fd;
559
560 name = getenv("KCONFIG_AUTOCONFIG");
561 if (!name)
562 name = "include/config/auto.conf";
563 conf_read_simple(name, S_DEF_AUTO);
564
565 if (chdir("include/config"))
566 return 1;
567
568 res = 0;
569 for_all_symbols(i, sym) {
570 sym_calc_value(sym);
571 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
572 continue;
573 if (sym->flags & SYMBOL_WRITE) {
574 if (sym->flags & SYMBOL_DEF_AUTO) {
575 /*
576 * symbol has old and new value,
577 * so compare them...
578 */
579 switch (sym->type) {
580 case S_BOOLEAN:
581 case S_TRISTATE:
582 if (sym_get_tristate_value(sym) ==
583 sym->def[S_DEF_AUTO].tri)
584 continue;
585 break;
586 case S_STRING:
587 case S_HEX:
588 case S_INT:
589 if (!strcmp(sym_get_string_value(sym),
590 sym->def[S_DEF_AUTO].val))
591 continue;
592 break;
593 default:
594 break;
595 }
596 } else {
597 /*
598 * If there is no old value, only 'no' (unset)
599 * is allowed as new value.
600 */
601 switch (sym->type) {
602 case S_BOOLEAN:
603 case S_TRISTATE:
604 if (sym_get_tristate_value(sym) == no)
605 continue;
606 break;
607 default:
608 break;
609 }
610 }
611 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
612 /* There is neither an old nor a new value. */
613 continue;
614 /* else
615 * There is an old value, but no new value ('no' (unset)
616 * isn't saved in auto.conf, so the old value is always
617 * different from 'no').
618 */
619
620 /* Replace all '_' and append ".h" */
621 s = sym->name;
622 d = path;
623 while ((c = *s++)) {
624 c = tolower(c);
625 *d++ = (c == '_') ? '/' : c;
626 }
627 strcpy(d, ".h");
628
629 /* Assume directory path already exists. */
630 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
631 if (fd == -1) {
632 if (errno != ENOENT) {
633 res = 1;
634 break;
635 }
636 /*
637 * Create directory components,
638 * unless they exist already.
639 */
640 d = path;
641 while ((d = strchr(d, '/'))) {
642 *d = 0;
643 if (stat(path, &sb) && mkdir(path, 0755)) {
644 res = 1;
645 goto out;
646 }
647 *d++ = '/';
648 }
649 /* Try it again. */
650 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
651 if (fd == -1) {
652 res = 1;
653 break;
654 }
655 }
656 close(fd);
657 }
658 out:
659 if (chdir("../.."))
660 return 1;
661
662 return res;
663 }
664
665 int conf_write_autoconf(void)
666 {
667 struct symbol *sym;
668 const char *str;
669 char *name;
670 FILE *out, *out_h;
671 time_t now;
672 int i, l;
673
674 sym_clear_all_valid();
675
676 file_write_dep("include/config/auto.conf.cmd");
677
678 if (conf_split_config())
679 return 1;
680
681 out = fopen(".tmpconfig", "w");
682 if (!out)
683 return 1;
684
685 out_h = fopen(".tmpconfig.h", "w");
686 if (!out_h) {
687 fclose(out);
688 return 1;
689 }
690
691 sym = sym_lookup("KERNELVERSION", 0);
692 sym_calc_value(sym);
693 time(&now);
694 fprintf(out, "#\n"
695 "# Automatically generated make config: don't edit\n"
696 "# Linux kernel version: %s\n"
697 "# %s"
698 "#\n",
699 sym_get_string_value(sym), ctime(&now));
700 fprintf(out_h, "/*\n"
701 " * Automatically generated C config: don't edit\n"
702 " * Linux kernel version: %s\n"
703 " * %s"
704 " */\n"
705 "#define AUTOCONF_INCLUDED\n",
706 sym_get_string_value(sym), ctime(&now));
707
708 for_all_symbols(i, sym) {
709 sym_calc_value(sym);
710 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
711 continue;
712 switch (sym->type) {
713 case S_BOOLEAN:
714 case S_TRISTATE:
715 switch (sym_get_tristate_value(sym)) {
716 case no:
717 break;
718 case mod:
719 fprintf(out, "CONFIG_%s=m\n", sym->name);
720 fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name);
721 break;
722 case yes:
723 fprintf(out, "CONFIG_%s=y\n", sym->name);
724 fprintf(out_h, "#define CONFIG_%s 1\n", sym->name);
725 break;
726 }
727 break;
728 case S_STRING:
729 str = sym_get_string_value(sym);
730 fprintf(out, "CONFIG_%s=\"", sym->name);
731 fprintf(out_h, "#define CONFIG_%s \"", sym->name);
732 while (1) {
733 l = strcspn(str, "\"\\");
734 if (l) {
735 fwrite(str, l, 1, out);
736 fwrite(str, l, 1, out_h);
737 str += l;
738 }
739 if (!*str)
740 break;
741 fprintf(out, "\\%c", *str);
742 fprintf(out_h, "\\%c", *str);
743 str++;
744 }
745 fputs("\"\n", out);
746 fputs("\"\n", out_h);
747 break;
748 case S_HEX:
749 str = sym_get_string_value(sym);
750 if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
751 fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
752 fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str);
753 break;
754 }
755 case S_INT:
756 str = sym_get_string_value(sym);
757 fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
758 fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str);
759 break;
760 default:
761 break;
762 }
763 }
764 fclose(out);
765 fclose(out_h);
766
767 name = getenv("KCONFIG_AUTOHEADER");
768 if (!name)
769 name = "include/linux/autoconf.h";
770 if (rename(".tmpconfig.h", name))
771 return 1;
772 name = getenv("KCONFIG_AUTOCONFIG");
773 if (!name)
774 name = "include/config/auto.conf";
775 /*
776 * This must be the last step, kbuild has a dependency on auto.conf
777 * and this marks the successful completion of the previous steps.
778 */
779 if (rename(".tmpconfig", name))
780 return 1;
781
782 return 0;
783 }
784
785 static int sym_change_count;
786 static void (*conf_changed_callback)(void);
787
788 void sym_set_change_count(int count)
789 {
790 int _sym_change_count = sym_change_count;
791 sym_change_count = count;
792 if (conf_changed_callback &&
793 (bool)_sym_change_count != (bool)count)
794 conf_changed_callback();
795 }
796
797 void sym_add_change_count(int count)
798 {
799 sym_set_change_count(count + sym_change_count);
800 }
801
802 bool conf_get_changed(void)
803 {
804 return sym_change_count;
805 }
806
807 void conf_set_changed_callback(void (*fn)(void))
808 {
809 conf_changed_callback = fn;
810 }
811
812
813 void conf_set_all_new_symbols(enum conf_def_mode mode)
814 {
815 struct symbol *sym, *csym;
816 struct property *prop;
817 struct expr *e;
818 int i, cnt, def;
819
820 for_all_symbols(i, sym) {
821 if (sym_has_value(sym))
822 continue;
823 switch (sym_get_type(sym)) {
824 case S_BOOLEAN:
825 case S_TRISTATE:
826 switch (mode) {
827 case def_yes:
828 sym->def[S_DEF_USER].tri = yes;
829 break;
830 case def_mod:
831 sym->def[S_DEF_USER].tri = mod;
832 break;
833 case def_no:
834 sym->def[S_DEF_USER].tri = no;
835 break;
836 case def_random:
837 sym->def[S_DEF_USER].tri = (tristate)(rand() % 3);
838 break;
839 default:
840 continue;
841 }
842 if (!sym_is_choice(sym) || mode != def_random)
843 sym->flags |= SYMBOL_DEF_USER;
844 break;
845 default:
846 break;
847 }
848
849 }
850
851 if (modules_sym)
852 sym_calc_value(modules_sym);
853
854 if (mode != def_random)
855 return;
856
857 for_all_symbols(i, csym) {
858 if (sym_has_value(csym) || !sym_is_choice(csym))
859 continue;
860
861 sym_calc_value(csym);
862 prop = sym_get_choice_prop(csym);
863 def = -1;
864 while (1) {
865 cnt = 0;
866 expr_list_for_each_sym(prop->expr, e, sym) {
867 if (sym->visible == no)
868 continue;
869 if (def == cnt++) {
870 csym->def[S_DEF_USER].val = sym;
871 break;
872 }
873 }
874 if (def >= 0 || cnt < 2)
875 break;
876 def = (rand() % cnt) + 1;
877 }
878 csym->flags |= SYMBOL_DEF_USER;
879 }
880 }
Linux 2.6 ibm-acpi/thinkpad-acpi driver git tree