blob: f110bf56b2c9cc5c505e92706e3dc7cb26c1633d [file] [log] [blame]
Kevin O'Connora4c5daf2011-01-24 22:13:58 -05001/*
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 <errno.h>
9#include <fcntl.h>
10#include <stdio.h>
11#include <stdlib.h>
12#include <string.h>
13#include <time.h>
14#include <unistd.h>
15
16#define LKC_DIRECT_LINK
17#include "lkc.h"
18
19static void conf_warning(const char *fmt, ...)
20 __attribute__ ((format (printf, 1, 2)));
21
22static void conf_message(const char *fmt, ...)
23 __attribute__ ((format (printf, 1, 2)));
24
25static const char *conf_filename;
26static int conf_lineno, conf_warnings, conf_unsaved;
27
28const char conf_defname[] = "arch/$ARCH/defconfig";
29
30static void conf_warning(const char *fmt, ...)
31{
32 va_list ap;
33 va_start(ap, fmt);
34 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
35 vfprintf(stderr, fmt, ap);
36 fprintf(stderr, "\n");
37 va_end(ap);
38 conf_warnings++;
39}
40
41static void conf_default_message_callback(const char *fmt, va_list ap)
42{
43 printf("#\n# ");
44 vprintf(fmt, ap);
45 printf("\n#\n");
46}
47
48static void (*conf_message_callback) (const char *fmt, va_list ap) =
49 conf_default_message_callback;
50void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap))
51{
52 conf_message_callback = fn;
53}
54
55static void conf_message(const char *fmt, ...)
56{
57 va_list ap;
58
59 va_start(ap, fmt);
60 if (conf_message_callback)
61 conf_message_callback(fmt, ap);
62}
63
64const char *conf_get_configname(void)
65{
66 char *name = getenv("KCONFIG_CONFIG");
67
68 return name ? name : ".config";
69}
70
71const char *conf_get_autoconfig_name(void)
72{
73 char *name = getenv("KCONFIG_AUTOCONFIG");
74
75 return name ? name : "include/config/auto.conf";
76}
77
78static char *conf_expand_value(const char *in)
79{
80 struct symbol *sym;
81 const char *src;
82 static char res_value[SYMBOL_MAXLENGTH];
83 char *dst, name[SYMBOL_MAXLENGTH];
84
85 res_value[0] = 0;
86 dst = name;
87 while ((src = strchr(in, '$'))) {
88 strncat(res_value, in, src - in);
89 src++;
90 dst = name;
91 while (isalnum(*src) || *src == '_')
92 *dst++ = *src++;
93 *dst = 0;
94 sym = sym_lookup(name, 0);
95 sym_calc_value(sym);
96 strcat(res_value, sym_get_string_value(sym));
97 in = src;
98 }
99 strcat(res_value, in);
100
101 return res_value;
102}
103
104char *conf_get_default_confname(void)
105{
106 struct stat buf;
107 static char fullname[PATH_MAX+1];
108 char *env, *name;
109
110 name = conf_expand_value(conf_defname);
111 env = getenv(SRCTREE);
112 if (env) {
113 sprintf(fullname, "%s/%s", env, name);
114 if (!stat(fullname, &buf))
115 return fullname;
116 }
117 return name;
118}
119
120static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
121{
122 char *p2;
123
124 switch (sym->type) {
125 case S_TRISTATE:
126 if (p[0] == 'm') {
127 sym->def[def].tri = mod;
128 sym->flags |= def_flags;
129 break;
130 }
131 case S_BOOLEAN:
132 if (p[0] == 'y') {
133 sym->def[def].tri = yes;
134 sym->flags |= def_flags;
135 break;
136 }
137 if (p[0] == 'n') {
138 sym->def[def].tri = no;
139 sym->flags |= def_flags;
140 break;
141 }
142 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
143 break;
144 case S_OTHER:
145 if (*p != '"') {
146 for (p2 = p; *p2 && !isspace(*p2); p2++)
147 ;
148 sym->type = S_STRING;
149 goto done;
150 }
151 case S_STRING:
152 if (*p++ != '"')
153 break;
154 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
155 if (*p2 == '"') {
156 *p2 = 0;
157 break;
158 }
159 memmove(p2, p2 + 1, strlen(p2));
160 }
161 if (!p2) {
162 conf_warning("invalid string found");
163 return 1;
164 }
165 case S_INT:
166 case S_HEX:
167 done:
168 if (sym_string_valid(sym, p)) {
169 sym->def[def].val = strdup(p);
170 sym->flags |= def_flags;
171 } else {
172 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
173 return 1;
174 }
175 break;
176 default:
177 ;
178 }
179 return 0;
180}
181
182int conf_read_simple(const char *name, int def)
183{
184 FILE *in = NULL;
185 char line[1024];
186 char *p, *p2;
187 struct symbol *sym;
188 int i, def_flags;
189
190 if (name) {
191 in = zconf_fopen(name);
192 } else {
193 struct property *prop;
194
195 name = conf_get_configname();
196 in = zconf_fopen(name);
197 if (in)
198 goto load;
199 sym_add_change_count(1);
200 if (!sym_defconfig_list) {
201 if (modules_sym)
202 sym_calc_value(modules_sym);
203 return 1;
204 }
205
206 for_all_defaults(sym_defconfig_list, prop) {
207 if (expr_calc_value(prop->visible.expr) == no ||
208 prop->expr->type != E_SYMBOL)
209 continue;
210 name = conf_expand_value(prop->expr->left.sym->name);
211 in = zconf_fopen(name);
212 if (in) {
213 conf_message(_("using defaults found in %s"),
214 name);
215 goto load;
216 }
217 }
218 }
219 if (!in)
220 return 1;
221
222load:
223 conf_filename = name;
224 conf_lineno = 0;
225 conf_warnings = 0;
226 conf_unsaved = 0;
227
228 def_flags = SYMBOL_DEF << def;
229 for_all_symbols(i, sym) {
230 sym->flags |= SYMBOL_CHANGED;
231 sym->flags &= ~(def_flags|SYMBOL_VALID);
232 if (sym_is_choice(sym))
233 sym->flags |= def_flags;
234 switch (sym->type) {
235 case S_INT:
236 case S_HEX:
237 case S_STRING:
238 if (sym->def[def].val)
239 free(sym->def[def].val);
240 default:
241 sym->def[def].val = NULL;
242 sym->def[def].tri = no;
243 }
244 }
245
246 while (fgets(line, sizeof(line), in)) {
247 conf_lineno++;
248 sym = NULL;
249 if (line[0] == '#') {
250 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
251 continue;
252 p = strchr(line + 2 + strlen(CONFIG_), ' ');
253 if (!p)
254 continue;
255 *p++ = 0;
256 if (strncmp(p, "is not set", 10))
257 continue;
258 if (def == S_DEF_USER) {
259 sym = sym_find(line + 2 + strlen(CONFIG_));
260 if (!sym) {
261 sym_add_change_count(1);
262 goto setsym;
263 }
264 } else {
265 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
266 if (sym->type == S_UNKNOWN)
267 sym->type = S_BOOLEAN;
268 }
269 if (sym->flags & def_flags) {
270 conf_warning("override: reassigning to symbol %s", sym->name);
271 }
272 switch (sym->type) {
273 case S_BOOLEAN:
274 case S_TRISTATE:
275 sym->def[def].tri = no;
276 sym->flags |= def_flags;
277 break;
278 default:
279 ;
280 }
281 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
282 p = strchr(line + strlen(CONFIG_), '=');
283 if (!p)
284 continue;
285 *p++ = 0;
286 p2 = strchr(p, '\n');
287 if (p2) {
288 *p2-- = 0;
289 if (*p2 == '\r')
290 *p2 = 0;
291 }
292 if (def == S_DEF_USER) {
293 sym = sym_find(line + strlen(CONFIG_));
294 if (!sym) {
295 sym_add_change_count(1);
296 goto setsym;
297 }
298 } else {
299 sym = sym_lookup(line + strlen(CONFIG_), 0);
300 if (sym->type == S_UNKNOWN)
301 sym->type = S_OTHER;
302 }
303 if (sym->flags & def_flags) {
304 conf_warning("override: reassigning to symbol %s", sym->name);
305 }
306 if (conf_set_sym_val(sym, def, def_flags, p))
307 continue;
308 } else {
309 if (line[0] != '\r' && line[0] != '\n')
310 conf_warning("unexpected data");
311 continue;
312 }
313setsym:
314 if (sym && sym_is_choice_value(sym)) {
315 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
316 switch (sym->def[def].tri) {
317 case no:
318 break;
319 case mod:
320 if (cs->def[def].tri == yes) {
321 conf_warning("%s creates inconsistent choice state", sym->name);
322 cs->flags &= ~def_flags;
323 }
324 break;
325 case yes:
326 if (cs->def[def].tri != no)
327 conf_warning("override: %s changes choice state", sym->name);
328 cs->def[def].val = sym;
329 break;
330 }
331 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
332 }
333 }
334 fclose(in);
335
336 if (modules_sym)
337 sym_calc_value(modules_sym);
338 return 0;
339}
340
341int conf_read(const char *name)
342{
343 struct symbol *sym, *choice_sym;
344 struct property *prop;
345 struct expr *e;
346 int i, flags;
347
348 sym_set_change_count(0);
349
350 if (conf_read_simple(name, S_DEF_USER))
351 return 1;
352
353 for_all_symbols(i, sym) {
354 sym_calc_value(sym);
355 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
356 goto sym_ok;
357 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
358 /* check that calculated value agrees with saved value */
359 switch (sym->type) {
360 case S_BOOLEAN:
361 case S_TRISTATE:
362 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
363 break;
364 if (!sym_is_choice(sym))
365 goto sym_ok;
366 default:
367 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
368 goto sym_ok;
369 break;
370 }
371 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
372 /* no previous value and not saved */
373 goto sym_ok;
374 conf_unsaved++;
375 /* maybe print value in verbose mode... */
376 sym_ok:
377 if (!sym_is_choice(sym))
378 continue;
379 /* The choice symbol only has a set value (and thus is not new)
380 * if all its visible childs have values.
381 */
382 prop = sym_get_choice_prop(sym);
383 flags = sym->flags;
384 expr_list_for_each_sym(prop->expr, e, choice_sym)
385 if (choice_sym->visible != no)
386 flags &= choice_sym->flags;
387 sym->flags &= flags | ~SYMBOL_DEF_USER;
388 }
389
390 for_all_symbols(i, sym) {
391 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
392 /* Reset values of generates values, so they'll appear
393 * as new, if they should become visible, but that
394 * doesn't quite work if the Kconfig and the saved
395 * configuration disagree.
396 */
397 if (sym->visible == no && !conf_unsaved)
398 sym->flags &= ~SYMBOL_DEF_USER;
399 switch (sym->type) {
400 case S_STRING:
401 case S_INT:
402 case S_HEX:
403 /* Reset a string value if it's out of range */
404 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
405 break;
406 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
407 conf_unsaved++;
408 break;
409 default:
410 break;
411 }
412 }
413 }
414
415 sym_add_change_count(conf_warnings || conf_unsaved);
416
417 return 0;
418}
419
420/* Write a S_STRING */
421static void conf_write_string(bool headerfile, const char *name,
422 const char *str, FILE *out)
423{
424 int l;
425 if (headerfile)
426 fprintf(out, "#define %s%s \"", CONFIG_, name);
427 else
428 fprintf(out, "%s%s=\"", CONFIG_, name);
429
430 while (1) {
431 l = strcspn(str, "\"\\");
432 if (l) {
433 xfwrite(str, l, 1, out);
434 str += l;
435 }
436 if (!*str)
437 break;
438 fprintf(out, "\\%c", *str++);
439 }
440 fputs("\"\n", out);
441}
442
443static void conf_write_symbol(struct symbol *sym, FILE *out, bool write_no)
444{
445 const char *str;
446
447 switch (sym->type) {
448 case S_BOOLEAN:
449 case S_TRISTATE:
450 switch (sym_get_tristate_value(sym)) {
451 case no:
452 if (write_no)
453 fprintf(out, "# %s%s is not set\n",
454 CONFIG_, sym->name);
455 break;
456 case mod:
457 fprintf(out, "%s%s=m\n", CONFIG_, sym->name);
458 break;
459 case yes:
460 fprintf(out, "%s%s=y\n", CONFIG_, sym->name);
461 break;
462 }
463 break;
464 case S_STRING:
465 conf_write_string(false, sym->name, sym_get_string_value(sym), out);
466 break;
467 case S_HEX:
468 case S_INT:
469 str = sym_get_string_value(sym);
470 fprintf(out, "%s%s=%s\n", CONFIG_, sym->name, str);
471 break;
472 case S_OTHER:
473 case S_UNKNOWN:
474 break;
475 }
476}
477
478/*
479 * Write out a minimal config.
480 * All values that has default values are skipped as this is redundant.
481 */
482int conf_write_defconfig(const char *filename)
483{
484 struct symbol *sym;
485 struct menu *menu;
486 FILE *out;
487
488 out = fopen(filename, "w");
489 if (!out)
490 return 1;
491
492 sym_clear_all_valid();
493
494 /* Traverse all menus to find all relevant symbols */
495 menu = rootmenu.list;
496
497 while (menu != NULL)
498 {
499 sym = menu->sym;
500 if (sym == NULL) {
501 if (!menu_is_visible(menu))
502 goto next_menu;
503 } else if (!sym_is_choice(sym)) {
504 sym_calc_value(sym);
505 if (!(sym->flags & SYMBOL_WRITE))
506 goto next_menu;
507 sym->flags &= ~SYMBOL_WRITE;
508 /* If we cannot change the symbol - skip */
509 if (!sym_is_changable(sym))
510 goto next_menu;
511 /* If symbol equals to default value - skip */
512 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
513 goto next_menu;
514
515 /*
516 * If symbol is a choice value and equals to the
517 * default for a choice - skip.
518 * But only if value is bool and equal to "y" and
519 * choice is not "optional".
520 * (If choice is "optional" then all values can be "n")
521 */
522 if (sym_is_choice_value(sym)) {
523 struct symbol *cs;
524 struct symbol *ds;
525
526 cs = prop_get_symbol(sym_get_choice_prop(sym));
527 ds = sym_choice_default(cs);
528 if (!sym_is_optional(cs) && sym == ds) {
529 if ((sym->type == S_BOOLEAN) &&
530 sym_get_tristate_value(sym) == yes)
531 goto next_menu;
532 }
533 }
534 conf_write_symbol(sym, out, true);
535 }
536next_menu:
537 if (menu->list != NULL) {
538 menu = menu->list;
539 }
540 else if (menu->next != NULL) {
541 menu = menu->next;
542 } else {
543 while ((menu = menu->parent)) {
544 if (menu->next != NULL) {
545 menu = menu->next;
546 break;
547 }
548 }
549 }
550 }
551 fclose(out);
552 return 0;
553}
554
555int conf_write(const char *name)
556{
557 FILE *out;
558 struct symbol *sym;
559 struct menu *menu;
560 const char *basename;
561 const char *str;
562 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
563 time_t now;
564 int use_timestamp = 1;
565 char *env;
566
567 dirname[0] = 0;
568 if (name && name[0]) {
569 struct stat st;
570 char *slash;
571
572 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
573 strcpy(dirname, name);
574 strcat(dirname, "/");
575 basename = conf_get_configname();
576 } else if ((slash = strrchr(name, '/'))) {
577 int size = slash - name + 1;
578 memcpy(dirname, name, size);
579 dirname[size] = 0;
580 if (slash[1])
581 basename = slash + 1;
582 else
583 basename = conf_get_configname();
584 } else
585 basename = name;
586 } else
587 basename = conf_get_configname();
588
589 sprintf(newname, "%s%s", dirname, basename);
590 env = getenv("KCONFIG_OVERWRITECONFIG");
591 if (!env || !*env) {
592 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
593 out = fopen(tmpname, "w");
594 } else {
595 *tmpname = 0;
596 out = fopen(newname, "w");
597 }
598 if (!out)
599 return 1;
600
601 time(&now);
602 env = getenv("KCONFIG_NOTIMESTAMP");
603 if (env && *env)
604 use_timestamp = 0;
605
606 fprintf(out, _("#\n"
607 "# Automatically generated make config: don't edit\n"
608 "# %s\n"
609 "%s%s"
610 "#\n"),
611 rootmenu.prompt->text,
612 use_timestamp ? "# " : "",
613 use_timestamp ? ctime(&now) : "");
614
615 if (!conf_get_changed())
616 sym_clear_all_valid();
617
618 menu = rootmenu.list;
619 while (menu) {
620 sym = menu->sym;
621 if (!sym) {
622 if (!menu_is_visible(menu))
623 goto next;
624 str = menu_get_prompt(menu);
625 fprintf(out, "\n"
626 "#\n"
627 "# %s\n"
628 "#\n", str);
629 } else if (!(sym->flags & SYMBOL_CHOICE)) {
630 sym_calc_value(sym);
631 if (!(sym->flags & SYMBOL_WRITE))
632 goto next;
633 sym->flags &= ~SYMBOL_WRITE;
634 /* Write config symbol to file */
635 conf_write_symbol(sym, out, true);
636 }
637
638next:
639 if (menu->list) {
640 menu = menu->list;
641 continue;
642 }
643 if (menu->next)
644 menu = menu->next;
645 else while ((menu = menu->parent)) {
646 if (menu->next) {
647 menu = menu->next;
648 break;
649 }
650 }
651 }
652 fclose(out);
653
654 if (*tmpname) {
655 strcat(dirname, basename);
656 strcat(dirname, ".old");
657 rename(newname, dirname);
658 if (rename(tmpname, newname))
659 return 1;
660 }
661
662 conf_message(_("configuration written to %s"), newname);
663
664 sym_set_change_count(0);
665
666 return 0;
667}
668
669static int conf_split_config(void)
670{
671 const char *name;
672 char path[PATH_MAX+1];
673 char *s, *d, c;
674 struct symbol *sym;
675 struct stat sb;
676 int res, i, fd;
677
678 name = conf_get_autoconfig_name();
679 conf_read_simple(name, S_DEF_AUTO);
680
681 if (chdir("include/config"))
682 return 1;
683
684 res = 0;
685 for_all_symbols(i, sym) {
686 sym_calc_value(sym);
687 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
688 continue;
689 if (sym->flags & SYMBOL_WRITE) {
690 if (sym->flags & SYMBOL_DEF_AUTO) {
691 /*
692 * symbol has old and new value,
693 * so compare them...
694 */
695 switch (sym->type) {
696 case S_BOOLEAN:
697 case S_TRISTATE:
698 if (sym_get_tristate_value(sym) ==
699 sym->def[S_DEF_AUTO].tri)
700 continue;
701 break;
702 case S_STRING:
703 case S_HEX:
704 case S_INT:
705 if (!strcmp(sym_get_string_value(sym),
706 sym->def[S_DEF_AUTO].val))
707 continue;
708 break;
709 default:
710 break;
711 }
712 } else {
713 /*
714 * If there is no old value, only 'no' (unset)
715 * is allowed as new value.
716 */
717 switch (sym->type) {
718 case S_BOOLEAN:
719 case S_TRISTATE:
720 if (sym_get_tristate_value(sym) == no)
721 continue;
722 break;
723 default:
724 break;
725 }
726 }
727 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
728 /* There is neither an old nor a new value. */
729 continue;
730 /* else
731 * There is an old value, but no new value ('no' (unset)
732 * isn't saved in auto.conf, so the old value is always
733 * different from 'no').
734 */
735
736 /* Replace all '_' and append ".h" */
737 s = sym->name;
738 d = path;
739 while ((c = *s++)) {
740 c = tolower(c);
741 *d++ = (c == '_') ? '/' : c;
742 }
743 strcpy(d, ".h");
744
745 /* Assume directory path already exists. */
746 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
747 if (fd == -1) {
748 if (errno != ENOENT) {
749 res = 1;
750 break;
751 }
752 /*
753 * Create directory components,
754 * unless they exist already.
755 */
756 d = path;
757 while ((d = strchr(d, '/'))) {
758 *d = 0;
759 if (stat(path, &sb) && mkdir(path, 0755)) {
760 res = 1;
761 goto out;
762 }
763 *d++ = '/';
764 }
765 /* Try it again. */
766 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
767 if (fd == -1) {
768 res = 1;
769 break;
770 }
771 }
772 close(fd);
773 }
774out:
775 if (chdir("../.."))
776 return 1;
777
778 return res;
779}
780
781int conf_write_autoconf(void)
782{
783 struct symbol *sym;
784 const char *str;
785 const char *name;
786 FILE *out, *tristate, *out_h;
787 time_t now;
788 int i;
789
790 sym_clear_all_valid();
791
792 file_write_dep("include/config/auto.conf.cmd");
793
794 if (conf_split_config())
795 return 1;
796
797 out = fopen(".tmpconfig", "w");
798 if (!out)
799 return 1;
800
801 tristate = fopen(".tmpconfig_tristate", "w");
802 if (!tristate) {
803 fclose(out);
804 return 1;
805 }
806
807 out_h = fopen(".tmpconfig.h", "w");
808 if (!out_h) {
809 fclose(out);
810 fclose(tristate);
811 return 1;
812 }
813
814 time(&now);
815 fprintf(out, "#\n"
816 "# Automatically generated make config: don't edit\n"
817 "# %s\n"
818 "# %s"
819 "#\n",
820 rootmenu.prompt->text, ctime(&now));
821 fprintf(tristate, "#\n"
822 "# Automatically generated - do not edit\n"
823 "\n");
824 fprintf(out_h, "/*\n"
825 " * Automatically generated C config: don't edit\n"
826 " * %s\n"
827 " * %s"
828 " */\n",
829 rootmenu.prompt->text, ctime(&now));
830
831 for_all_symbols(i, sym) {
832 sym_calc_value(sym);
Kevin O'Connorb623e7c2011-01-26 20:09:39 -0500833 if (!sym->name)
Kevin O'Connora4c5daf2011-01-24 22:13:58 -0500834 continue;
Kevin O'Connorb623e7c2011-01-26 20:09:39 -0500835 if (!(sym->flags & SYMBOL_WRITE)) {
836 if (sym->type == S_BOOLEAN || sym->type == S_HEX
837 || sym->type == S_INT)
838 fprintf(out_h, "#define %s%s 0\n",
839 CONFIG_, sym->name);
840 continue;
841 }
Kevin O'Connora4c5daf2011-01-24 22:13:58 -0500842
843 /* write symbol to config file */
844 conf_write_symbol(sym, out, false);
845
846 /* update autoconf and tristate files */
847 switch (sym->type) {
848 case S_BOOLEAN:
849 case S_TRISTATE:
850 switch (sym_get_tristate_value(sym)) {
851 case no:
Kevin O'Connorb623e7c2011-01-26 20:09:39 -0500852 fprintf(out_h, "#define %s%s 0\n",
853 CONFIG_, sym->name);
Kevin O'Connora4c5daf2011-01-24 22:13:58 -0500854 break;
855 case mod:
856 fprintf(tristate, "%s%s=M\n",
857 CONFIG_, sym->name);
858 fprintf(out_h, "#define %s%s_MODULE 1\n",
859 CONFIG_, sym->name);
860 break;
861 case yes:
862 if (sym->type == S_TRISTATE)
863 fprintf(tristate,"%s%s=Y\n",
864 CONFIG_, sym->name);
865 fprintf(out_h, "#define %s%s 1\n",
866 CONFIG_, sym->name);
867 break;
868 }
869 break;
870 case S_STRING:
871 conf_write_string(true, sym->name, sym_get_string_value(sym), out_h);
872 break;
873 case S_HEX:
874 str = sym_get_string_value(sym);
875 if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
876 fprintf(out_h, "#define %s%s 0x%s\n",
877 CONFIG_, sym->name, str);
878 break;
879 }
880 case S_INT:
881 str = sym_get_string_value(sym);
882 fprintf(out_h, "#define %s%s %s\n",
883 CONFIG_, sym->name, str);
884 break;
885 default:
886 break;
887 }
888 }
889 fclose(out);
890 fclose(tristate);
891 fclose(out_h);
892
893 name = getenv("KCONFIG_AUTOHEADER");
894 if (!name)
895 name = "include/generated/autoconf.h";
896 if (rename(".tmpconfig.h", name))
897 return 1;
898 name = getenv("KCONFIG_TRISTATE");
899 if (!name)
900 name = "include/config/tristate.conf";
901 if (rename(".tmpconfig_tristate", name))
902 return 1;
903 name = conf_get_autoconfig_name();
904 /*
905 * This must be the last step, kbuild has a dependency on auto.conf
906 * and this marks the successful completion of the previous steps.
907 */
908 if (rename(".tmpconfig", name))
909 return 1;
910
911 return 0;
912}
913
914static int sym_change_count;
915static void (*conf_changed_callback)(void);
916
917void sym_set_change_count(int count)
918{
919 int _sym_change_count = sym_change_count;
920 sym_change_count = count;
921 if (conf_changed_callback &&
922 (bool)_sym_change_count != (bool)count)
923 conf_changed_callback();
924}
925
926void sym_add_change_count(int count)
927{
928 sym_set_change_count(count + sym_change_count);
929}
930
931bool conf_get_changed(void)
932{
933 return sym_change_count;
934}
935
936void conf_set_changed_callback(void (*fn)(void))
937{
938 conf_changed_callback = fn;
939}
940
941static void randomize_choice_values(struct symbol *csym)
942{
943 struct property *prop;
944 struct symbol *sym;
945 struct expr *e;
946 int cnt, def;
947
948 /*
949 * If choice is mod then we may have more items selected
950 * and if no then no-one.
951 * In both cases stop.
952 */
953 if (csym->curr.tri != yes)
954 return;
955
956 prop = sym_get_choice_prop(csym);
957
958 /* count entries in choice block */
959 cnt = 0;
960 expr_list_for_each_sym(prop->expr, e, sym)
961 cnt++;
962
963 /*
964 * find a random value and set it to yes,
965 * set the rest to no so we have only one set
966 */
967 def = (rand() % cnt);
968
969 cnt = 0;
970 expr_list_for_each_sym(prop->expr, e, sym) {
971 if (def == cnt++) {
972 sym->def[S_DEF_USER].tri = yes;
973 csym->def[S_DEF_USER].val = sym;
974 }
975 else {
976 sym->def[S_DEF_USER].tri = no;
977 }
978 }
979 csym->flags |= SYMBOL_DEF_USER;
980 /* clear VALID to get value calculated */
981 csym->flags &= ~(SYMBOL_VALID);
982}
983
984static void set_all_choice_values(struct symbol *csym)
985{
986 struct property *prop;
987 struct symbol *sym;
988 struct expr *e;
989
990 prop = sym_get_choice_prop(csym);
991
992 /*
993 * Set all non-assinged choice values to no
994 */
995 expr_list_for_each_sym(prop->expr, e, sym) {
996 if (!sym_has_value(sym))
997 sym->def[S_DEF_USER].tri = no;
998 }
999 csym->flags |= SYMBOL_DEF_USER;
1000 /* clear VALID to get value calculated */
1001 csym->flags &= ~(SYMBOL_VALID);
1002}
1003
1004void conf_set_all_new_symbols(enum conf_def_mode mode)
1005{
1006 struct symbol *sym, *csym;
1007 int i, cnt;
1008
1009 for_all_symbols(i, sym) {
1010 if (sym_has_value(sym))
1011 continue;
1012 switch (sym_get_type(sym)) {
1013 case S_BOOLEAN:
1014 case S_TRISTATE:
1015 switch (mode) {
1016 case def_yes:
1017 sym->def[S_DEF_USER].tri = yes;
1018 break;
1019 case def_mod:
1020 sym->def[S_DEF_USER].tri = mod;
1021 break;
1022 case def_no:
1023 sym->def[S_DEF_USER].tri = no;
1024 break;
1025 case def_random:
1026 cnt = sym_get_type(sym) == S_TRISTATE ? 3 : 2;
1027 sym->def[S_DEF_USER].tri = (tristate)(rand() % cnt);
1028 break;
1029 default:
1030 continue;
1031 }
1032 if (!(sym_is_choice(sym) && mode == def_random))
1033 sym->flags |= SYMBOL_DEF_USER;
1034 break;
1035 default:
1036 break;
1037 }
1038
1039 }
1040
1041 sym_clear_all_valid();
1042
1043 /*
1044 * We have different type of choice blocks.
1045 * If curr.tri equals to mod then we can select several
1046 * choice symbols in one block.
1047 * In this case we do nothing.
1048 * If curr.tri equals yes then only one symbol can be
1049 * selected in a choice block and we set it to yes,
1050 * and the rest to no.
1051 */
1052 for_all_symbols(i, csym) {
1053 if (sym_has_value(csym) || !sym_is_choice(csym))
1054 continue;
1055
1056 sym_calc_value(csym);
1057 if (mode == def_random)
1058 randomize_choice_values(csym);
1059 else
1060 set_all_choice_values(csym);
1061 }
1062}