1
2
3
4
5
6#include <sys/stat.h>
7#include <ctype.h>
8#include <errno.h>
9#include <fcntl.h>
10#include <stdarg.h>
11#include <stdio.h>
12#include <stdlib.h>
13#include <string.h>
14#include <time.h>
15#include <unistd.h>
16
17#include "lkc.h"
18
19struct conf_printer {
20 void (*print_symbol)(FILE *, struct symbol *, const char *, void *);
21 void (*print_comment)(FILE *, const char *, void *);
22};
23
24static void conf_warning(const char *fmt, ...)
25 __attribute__ ((format (printf, 1, 2)));
26
27static void conf_message(const char *fmt, ...)
28 __attribute__ ((format (printf, 1, 2)));
29
30static const char *conf_filename;
31static int conf_lineno, conf_warnings, conf_unsaved;
32
33const char conf_defname[] = "arch/$ARCH/defconfig";
34
35static void conf_warning(const char *fmt, ...)
36{
37 va_list ap;
38 va_start(ap, fmt);
39 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
40 vfprintf(stderr, fmt, ap);
41 fprintf(stderr, "\n");
42 va_end(ap);
43 conf_warnings++;
44}
45
46static void conf_default_message_callback(const char *fmt, va_list ap)
47{
48 printf("#\n# ");
49 vprintf(fmt, ap);
50 printf("\n#\n");
51}
52
53static void (*conf_message_callback) (const char *fmt, va_list ap) =
54 conf_default_message_callback;
55void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap))
56{
57 conf_message_callback = fn;
58}
59
60static void conf_message(const char *fmt, ...)
61{
62 va_list ap;
63
64 va_start(ap, fmt);
65 if (conf_message_callback)
66 conf_message_callback(fmt, ap);
67 va_end(ap);
68}
69
70const char *conf_get_configname(void)
71{
72 char *name = getenv("KCONFIG_CONFIG");
73
74 return name ? name : ".config";
75}
76
77const char *conf_get_autoconfig_name(void)
78{
79 char *name = getenv("KCONFIG_AUTOCONFIG");
80
81 return name ? name : "include/config/auto.conf";
82}
83
84static char *conf_expand_value(const char *in)
85{
86 struct symbol *sym;
87 const char *src;
88 static char res_value[SYMBOL_MAXLENGTH];
89 char *dst, name[SYMBOL_MAXLENGTH];
90
91 res_value[0] = 0;
92 dst = name;
93 while ((src = strchr(in, '$'))) {
94 strncat(res_value, in, src - in);
95 src++;
96 dst = name;
97 while (isalnum(*src) || *src == '_')
98 *dst++ = *src++;
99 *dst = 0;
100 sym = sym_lookup(name, 0);
101 sym_calc_value(sym);
102 strcat(res_value, sym_get_string_value(sym));
103 in = src;
104 }
105 strcat(res_value, in);
106
107 return res_value;
108}
109
110char *conf_get_default_confname(void)
111{
112 struct stat buf;
113 static char fullname[PATH_MAX+1];
114 char *env, *name;
115
116 name = conf_expand_value(conf_defname);
117 env = getenv(SRCTREE);
118 if (env) {
119 sprintf(fullname, "%s/%s", env, name);
120 if (!stat(fullname, &buf))
121 return fullname;
122 }
123 return name;
124}
125
126static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
127{
128 char *p2;
129
130 switch (sym->type) {
131 case S_TRISTATE:
132 if (p[0] == 'm') {
133 sym->def[def].tri = mod;
134 sym->flags |= def_flags;
135 break;
136 }
137
138 case S_BOOLEAN:
139 if (p[0] == 'y') {
140 sym->def[def].tri = yes;
141 sym->flags |= def_flags;
142 break;
143 }
144 if (p[0] == 'n') {
145 sym->def[def].tri = no;
146 sym->flags |= def_flags;
147 break;
148 }
149 if (def != S_DEF_AUTO)
150 conf_warning("symbol value '%s' invalid for %s",
151 p, sym->name);
152 return 1;
153 case S_OTHER:
154 if (*p != '"') {
155 for (p2 = p; *p2 && !isspace(*p2); p2++)
156 ;
157 sym->type = S_STRING;
158 goto done;
159 }
160
161 case S_STRING:
162 if (*p++ != '"')
163 break;
164 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
165 if (*p2 == '"') {
166 *p2 = 0;
167 break;
168 }
169 memmove(p2, p2 + 1, strlen(p2));
170 }
171 if (!p2) {
172 if (def != S_DEF_AUTO)
173 conf_warning("invalid string found");
174 return 1;
175 }
176
177 case S_INT:
178 case S_HEX:
179 done:
180 if (sym_string_valid(sym, p)) {
181 sym->def[def].val = strdup(p);
182 sym->flags |= def_flags;
183 } else {
184 if (def != S_DEF_AUTO)
185 conf_warning("symbol value '%s' invalid for %s",
186 p, sym->name);
187 return 1;
188 }
189 break;
190 default:
191 ;
192 }
193 return 0;
194}
195
196#define LINE_GROWTH 16
197static int add_byte(int c, char **lineptr, size_t slen, size_t *n)
198{
199 char *nline;
200 size_t new_size = slen + 1;
201 if (new_size > *n) {
202 new_size += LINE_GROWTH - 1;
203 new_size *= 2;
204 nline = realloc(*lineptr, new_size);
205 if (!nline)
206 return -1;
207
208 *lineptr = nline;
209 *n = new_size;
210 }
211
212 (*lineptr)[slen] = c;
213
214 return 0;
215}
216
217static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream)
218{
219 char *line = *lineptr;
220 size_t slen = 0;
221
222 for (;;) {
223 int c = getc(stream);
224
225 switch (c) {
226 case '\n':
227 if (add_byte(c, &line, slen, n) < 0)
228 goto e_out;
229 slen++;
230
231 case EOF:
232 if (add_byte('\0', &line, slen, n) < 0)
233 goto e_out;
234 *lineptr = line;
235 if (slen == 0)
236 return -1;
237 return slen;
238 default:
239 if (add_byte(c, &line, slen, n) < 0)
240 goto e_out;
241 slen++;
242 }
243 }
244
245e_out:
246 line[slen-1] = '\0';
247 *lineptr = line;
248 return -1;
249}
250
251int conf_read_simple(const char *name, int def)
252{
253 FILE *in = NULL;
254 char *line = NULL;
255 size_t line_asize = 0;
256 char *p, *p2;
257 struct symbol *sym;
258 int i, def_flags;
259
260 if (name) {
261 in = zconf_fopen(name);
262 } else {
263 struct property *prop;
264
265 name = conf_get_configname();
266 in = zconf_fopen(name);
267 if (in)
268 goto load;
269 sym_add_change_count(1);
270 if (!sym_defconfig_list) {
271 sym_calc_value(modules_sym);
272 return 1;
273 }
274
275 for_all_defaults(sym_defconfig_list, prop) {
276 if (expr_calc_value(prop->visible.expr) == no ||
277 prop->expr->type != E_SYMBOL)
278 continue;
279 name = conf_expand_value(prop->expr->left.sym->name);
280 in = zconf_fopen(name);
281 if (in) {
282 conf_message(_("using defaults found in %s"),
283 name);
284 goto load;
285 }
286 }
287 }
288 if (!in)
289 return 1;
290
291load:
292 conf_filename = name;
293 conf_lineno = 0;
294 conf_warnings = 0;
295 conf_unsaved = 0;
296
297 def_flags = SYMBOL_DEF << def;
298 for_all_symbols(i, sym) {
299 sym->flags |= SYMBOL_CHANGED;
300 sym->flags &= ~(def_flags|SYMBOL_VALID);
301 if (sym_is_choice(sym))
302 sym->flags |= def_flags;
303 switch (sym->type) {
304 case S_INT:
305 case S_HEX:
306 case S_STRING:
307 if (sym->def[def].val)
308 free(sym->def[def].val);
309
310 default:
311 sym->def[def].val = NULL;
312 sym->def[def].tri = no;
313 }
314 }
315
316 while (compat_getline(&line, &line_asize, in) != -1) {
317 conf_lineno++;
318 sym = NULL;
319 if (line[0] == '#') {
320 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
321 continue;
322 p = strchr(line + 2 + strlen(CONFIG_), ' ');
323 if (!p)
324 continue;
325 *p++ = 0;
326 if (strncmp(p, "is not set", 10))
327 continue;
328 if (def == S_DEF_USER) {
329 sym = sym_find(line + 2 + strlen(CONFIG_));
330 if (!sym) {
331 sym_add_change_count(1);
332 goto setsym;
333 }
334 } else {
335 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
336 if (sym->type == S_UNKNOWN)
337 sym->type = S_BOOLEAN;
338 }
339 if (sym->flags & def_flags) {
340 conf_warning("override: reassigning to symbol %s", sym->name);
341 }
342 switch (sym->type) {
343 case S_BOOLEAN:
344 case S_TRISTATE:
345 sym->def[def].tri = no;
346 sym->flags |= def_flags;
347 break;
348 default:
349 ;
350 }
351 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
352 p = strchr(line + strlen(CONFIG_), '=');
353 if (!p)
354 continue;
355 *p++ = 0;
356 p2 = strchr(p, '\n');
357 if (p2) {
358 *p2-- = 0;
359 if (*p2 == '\r')
360 *p2 = 0;
361 }
362 if (def == S_DEF_USER) {
363 sym = sym_find(line + strlen(CONFIG_));
364 if (!sym) {
365 sym_add_change_count(1);
366 goto setsym;
367 }
368 } else {
369 sym = sym_lookup(line + strlen(CONFIG_), 0);
370 if (sym->type == S_UNKNOWN)
371 sym->type = S_OTHER;
372 }
373 if (sym->flags & def_flags) {
374 conf_warning("override: reassigning to symbol %s", sym->name);
375 }
376 if (conf_set_sym_val(sym, def, def_flags, p))
377 continue;
378 } else {
379 if (line[0] != '\r' && line[0] != '\n')
380 conf_warning("unexpected data");
381 continue;
382 }
383setsym:
384 if (sym && sym_is_choice_value(sym)) {
385 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
386 switch (sym->def[def].tri) {
387 case no:
388 break;
389 case mod:
390 if (cs->def[def].tri == yes) {
391 conf_warning("%s creates inconsistent choice state", sym->name);
392 cs->flags &= ~def_flags;
393 }
394 break;
395 case yes:
396 if (cs->def[def].tri != no)
397 conf_warning("override: %s changes choice state", sym->name);
398 cs->def[def].val = sym;
399 break;
400 }
401 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
402 }
403 }
404 free(line);
405 fclose(in);
406 sym_calc_value(modules_sym);
407 return 0;
408}
409
410int conf_read(const char *name)
411{
412 struct symbol *sym;
413 int i;
414
415 sym_set_change_count(0);
416
417 if (conf_read_simple(name, S_DEF_USER))
418 return 1;
419
420 for_all_symbols(i, sym) {
421 sym_calc_value(sym);
422 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
423 continue;
424 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
425
426 switch (sym->type) {
427 case S_BOOLEAN:
428 case S_TRISTATE:
429 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
430 break;
431 if (!sym_is_choice(sym))
432 continue;
433
434 default:
435 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
436 continue;
437 break;
438 }
439 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
440
441 continue;
442 conf_unsaved++;
443
444 }
445
446 for_all_symbols(i, sym) {
447 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
448
449
450
451
452
453 if (sym->visible == no && !conf_unsaved)
454 sym->flags &= ~SYMBOL_DEF_USER;
455 switch (sym->type) {
456 case S_STRING:
457 case S_INT:
458 case S_HEX:
459
460 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
461 break;
462 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
463 conf_unsaved++;
464 break;
465 default:
466 break;
467 }
468 }
469 }
470
471 sym_add_change_count(conf_warnings || conf_unsaved);
472
473 return 0;
474}
475
476
477
478
479
480
481
482
483
484static void
485kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
486{
487
488 switch (sym->type) {
489 case S_BOOLEAN:
490 case S_TRISTATE:
491 if (*value == 'n') {
492 bool skip_unset = (arg != NULL);
493
494 if (!skip_unset)
495 fprintf(fp, "# %s%s is not set\n",
496 CONFIG_, sym->name);
497 return;
498 }
499 break;
500 default:
501 break;
502 }
503
504 fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
505}
506
507static void
508kconfig_print_comment(FILE *fp, const char *value, void *arg)
509{
510 const char *p = value;
511 size_t l;
512
513 for (;;) {
514 l = strcspn(p, "\n");
515 fprintf(fp, "#");
516 if (l) {
517 fprintf(fp, " ");
518 xfwrite(p, l, 1, fp);
519 p += l;
520 }
521 fprintf(fp, "\n");
522 if (*p++ == '\0')
523 break;
524 }
525}
526
527static struct conf_printer kconfig_printer_cb =
528{
529 .print_symbol = kconfig_print_symbol,
530 .print_comment = kconfig_print_comment,
531};
532
533
534
535
536
537
538static void
539header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
540{
541
542 switch (sym->type) {
543 case S_BOOLEAN:
544 case S_TRISTATE: {
545 const char *suffix = "";
546
547 switch (*value) {
548 case 'n':
549 break;
550 case 'm':
551 suffix = "_MODULE";
552
553 default:
554 fprintf(fp, "#define %s%s%s 1\n",
555 CONFIG_, sym->name, suffix);
556 }
557 break;
558 }
559 case S_HEX: {
560 const char *prefix = "";
561
562 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
563 prefix = "0x";
564 fprintf(fp, "#define %s%s %s%s\n",
565 CONFIG_, sym->name, prefix, value);
566 break;
567 }
568 case S_STRING:
569 case S_INT:
570 fprintf(fp, "#define %s%s %s\n",
571 CONFIG_, sym->name, value);
572 break;
573 default:
574 break;
575 }
576
577}
578
579static void
580header_print_comment(FILE *fp, const char *value, void *arg)
581{
582 const char *p = value;
583 size_t l;
584
585 fprintf(fp, "/*\n");
586 for (;;) {
587 l = strcspn(p, "\n");
588 fprintf(fp, " *");
589 if (l) {
590 fprintf(fp, " ");
591 xfwrite(p, l, 1, fp);
592 p += l;
593 }
594 fprintf(fp, "\n");
595 if (*p++ == '\0')
596 break;
597 }
598 fprintf(fp, " */\n");
599}
600
601static struct conf_printer header_printer_cb =
602{
603 .print_symbol = header_print_symbol,
604 .print_comment = header_print_comment,
605};
606
607
608
609
610
611
612static void
613tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
614{
615
616 if (sym->type == S_TRISTATE && *value != 'n')
617 fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
618}
619
620static struct conf_printer tristate_printer_cb =
621{
622 .print_symbol = tristate_print_symbol,
623 .print_comment = kconfig_print_comment,
624};
625
626static void conf_write_symbol(FILE *fp, struct symbol *sym,
627 struct conf_printer *printer, void *printer_arg)
628{
629 const char *str;
630
631 switch (sym->type) {
632 case S_OTHER:
633 case S_UNKNOWN:
634 break;
635 case S_STRING:
636 str = sym_get_string_value(sym);
637 str = sym_escape_string_value(str);
638 printer->print_symbol(fp, sym, str, printer_arg);
639 free((void *)str);
640 break;
641 default:
642 str = sym_get_string_value(sym);
643 printer->print_symbol(fp, sym, str, printer_arg);
644 }
645}
646
647static void
648conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
649{
650 char buf[256];
651
652 snprintf(buf, sizeof(buf),
653 "\n"
654 "Automatically generated file; DO NOT EDIT.\n"
655 "%s\n",
656 rootmenu.prompt->text);
657
658 printer->print_comment(fp, buf, printer_arg);
659}
660
661
662
663
664
665int conf_write_defconfig(const char *filename)
666{
667 struct symbol *sym;
668 struct menu *menu;
669 FILE *out;
670
671 out = fopen(filename, "w");
672 if (!out)
673 return 1;
674
675 sym_clear_all_valid();
676
677
678 menu = rootmenu.list;
679
680 while (menu != NULL)
681 {
682 sym = menu->sym;
683 if (sym == NULL) {
684 if (!menu_is_visible(menu))
685 goto next_menu;
686 } else if (!sym_is_choice(sym)) {
687 sym_calc_value(sym);
688 if (!(sym->flags & SYMBOL_WRITE))
689 goto next_menu;
690 sym->flags &= ~SYMBOL_WRITE;
691
692 if (!sym_is_changable(sym))
693 goto next_menu;
694
695 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
696 goto next_menu;
697
698
699
700
701
702
703
704
705 if (sym_is_choice_value(sym)) {
706 struct symbol *cs;
707 struct symbol *ds;
708
709 cs = prop_get_symbol(sym_get_choice_prop(sym));
710 ds = sym_choice_default(cs);
711 if (!sym_is_optional(cs) && sym == ds) {
712 if ((sym->type == S_BOOLEAN) &&
713 sym_get_tristate_value(sym) == yes)
714 goto next_menu;
715 }
716 }
717 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
718 }
719next_menu:
720 if (menu->list != NULL) {
721 menu = menu->list;
722 }
723 else if (menu->next != NULL) {
724 menu = menu->next;
725 } else {
726 while ((menu = menu->parent)) {
727 if (menu->next != NULL) {
728 menu = menu->next;
729 break;
730 }
731 }
732 }
733 }
734 fclose(out);
735 return 0;
736}
737
738int conf_write(const char *name)
739{
740 FILE *out;
741 struct symbol *sym;
742 struct menu *menu;
743 const char *basename;
744 const char *str;
745 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
746 char *env;
747
748 dirname[0] = 0;
749 if (name && name[0]) {
750 struct stat st;
751 char *slash;
752
753 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
754 strcpy(dirname, name);
755 strcat(dirname, "/");
756 basename = conf_get_configname();
757 } else if ((slash = strrchr(name, '/'))) {
758 int size = slash - name + 1;
759 memcpy(dirname, name, size);
760 dirname[size] = 0;
761 if (slash[1])
762 basename = slash + 1;
763 else
764 basename = conf_get_configname();
765 } else
766 basename = name;
767 } else
768 basename = conf_get_configname();
769
770 sprintf(newname, "%s%s", dirname, basename);
771 env = getenv("KCONFIG_OVERWRITECONFIG");
772 if (!env || !*env) {
773 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
774 out = fopen(tmpname, "w");
775 } else {
776 *tmpname = 0;
777 out = fopen(newname, "w");
778 }
779 if (!out)
780 return 1;
781
782 conf_write_heading(out, &kconfig_printer_cb, NULL);
783
784 if (!conf_get_changed())
785 sym_clear_all_valid();
786
787 menu = rootmenu.list;
788 while (menu) {
789 sym = menu->sym;
790 if (!sym) {
791 if (!menu_is_visible(menu))
792 goto next;
793 str = menu_get_prompt(menu);
794 fprintf(out, "\n"
795 "#\n"
796 "# %s\n"
797 "#\n", str);
798 } else if (!(sym->flags & SYMBOL_CHOICE)) {
799 sym_calc_value(sym);
800 if (!(sym->flags & SYMBOL_WRITE))
801 goto next;
802 sym->flags &= ~SYMBOL_WRITE;
803
804 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
805 }
806
807next:
808 if (menu->list) {
809 menu = menu->list;
810 continue;
811 }
812 if (menu->next)
813 menu = menu->next;
814 else while ((menu = menu->parent)) {
815 if (menu->next) {
816 menu = menu->next;
817 break;
818 }
819 }
820 }
821 fclose(out);
822
823 if (*tmpname) {
824 strcat(dirname, basename);
825 strcat(dirname, ".old");
826 rename(newname, dirname);
827 if (rename(tmpname, newname))
828 return 1;
829 }
830
831 conf_message(_("configuration written to %s"), newname);
832
833 sym_set_change_count(0);
834
835 return 0;
836}
837
838static int conf_split_config(void)
839{
840 const char *name;
841 char path[PATH_MAX+1];
842 char *s, *d, c;
843 struct symbol *sym;
844 struct stat sb;
845 int res, i, fd;
846
847 name = conf_get_autoconfig_name();
848 conf_read_simple(name, S_DEF_AUTO);
849
850 if (chdir("include/config"))
851 return 1;
852
853 res = 0;
854 for_all_symbols(i, sym) {
855 sym_calc_value(sym);
856 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
857 continue;
858 if (sym->flags & SYMBOL_WRITE) {
859 if (sym->flags & SYMBOL_DEF_AUTO) {
860
861
862
863
864 switch (sym->type) {
865 case S_BOOLEAN:
866 case S_TRISTATE:
867 if (sym_get_tristate_value(sym) ==
868 sym->def[S_DEF_AUTO].tri)
869 continue;
870 break;
871 case S_STRING:
872 case S_HEX:
873 case S_INT:
874 if (!strcmp(sym_get_string_value(sym),
875 sym->def[S_DEF_AUTO].val))
876 continue;
877 break;
878 default:
879 break;
880 }
881 } else {
882
883
884
885
886 switch (sym->type) {
887 case S_BOOLEAN:
888 case S_TRISTATE:
889 if (sym_get_tristate_value(sym) == no)
890 continue;
891 break;
892 default:
893 break;
894 }
895 }
896 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
897
898 continue;
899
900
901
902
903
904
905
906 s = sym->name;
907 d = path;
908 while ((c = *s++)) {
909 c = tolower(c);
910 *d++ = (c == '_') ? '/' : c;
911 }
912 strcpy(d, ".h");
913
914
915 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
916 if (fd == -1) {
917 if (errno != ENOENT) {
918 res = 1;
919 break;
920 }
921
922
923
924
925 d = path;
926 while ((d = strchr(d, '/'))) {
927 *d = 0;
928 if (stat(path, &sb) && mkdir(path, 0755)) {
929 res = 1;
930 goto out;
931 }
932 *d++ = '/';
933 }
934
935 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
936 if (fd == -1) {
937 res = 1;
938 break;
939 }
940 }
941 close(fd);
942 }
943out:
944 if (chdir("../.."))
945 return 1;
946
947 return res;
948}
949
950int conf_write_autoconf(void)
951{
952 struct symbol *sym;
953 const char *name;
954 FILE *out, *tristate, *out_h;
955 int i;
956
957 sym_clear_all_valid();
958
959 file_write_dep("include/config/auto.conf.cmd");
960
961 if (conf_split_config())
962 return 1;
963
964 out = fopen(".tmpconfig", "w");
965 if (!out)
966 return 1;
967
968 tristate = fopen(".tmpconfig_tristate", "w");
969 if (!tristate) {
970 fclose(out);
971 return 1;
972 }
973
974 out_h = fopen(".tmpconfig.h", "w");
975 if (!out_h) {
976 fclose(out);
977 fclose(tristate);
978 return 1;
979 }
980
981 conf_write_heading(out, &kconfig_printer_cb, NULL);
982
983 conf_write_heading(tristate, &tristate_printer_cb, NULL);
984
985 conf_write_heading(out_h, &header_printer_cb, NULL);
986
987 for_all_symbols(i, sym) {
988 sym_calc_value(sym);
989 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
990 continue;
991
992
993 conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
994
995 conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);
996
997 conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
998 }
999 fclose(out);
1000 fclose(tristate);
1001 fclose(out_h);
1002
1003 name = getenv("KCONFIG_AUTOHEADER");
1004 if (!name)
1005 name = "include/generated/autoconf.h";
1006 if (rename(".tmpconfig.h", name))
1007 return 1;
1008 name = getenv("KCONFIG_TRISTATE");
1009 if (!name)
1010 name = "include/config/tristate.conf";
1011 if (rename(".tmpconfig_tristate", name))
1012 return 1;
1013 name = conf_get_autoconfig_name();
1014
1015
1016
1017
1018 if (rename(".tmpconfig", name))
1019 return 1;
1020
1021 return 0;
1022}
1023
1024static int sym_change_count;
1025static void (*conf_changed_callback)(void);
1026
1027void sym_set_change_count(int count)
1028{
1029 int _sym_change_count = sym_change_count;
1030 sym_change_count = count;
1031 if (conf_changed_callback &&
1032 (bool)_sym_change_count != (bool)count)
1033 conf_changed_callback();
1034}
1035
1036void sym_add_change_count(int count)
1037{
1038 sym_set_change_count(count + sym_change_count);
1039}
1040
1041bool conf_get_changed(void)
1042{
1043 return sym_change_count;
1044}
1045
1046void conf_set_changed_callback(void (*fn)(void))
1047{
1048 conf_changed_callback = fn;
1049}
1050
1051static bool randomize_choice_values(struct symbol *csym)
1052{
1053 struct property *prop;
1054 struct symbol *sym;
1055 struct expr *e;
1056 int cnt, def;
1057
1058
1059
1060
1061
1062
1063 if (csym->curr.tri != yes)
1064 return false;
1065
1066 prop = sym_get_choice_prop(csym);
1067
1068
1069 cnt = 0;
1070 expr_list_for_each_sym(prop->expr, e, sym)
1071 cnt++;
1072
1073
1074
1075
1076
1077 def = (rand() % cnt);
1078
1079 cnt = 0;
1080 expr_list_for_each_sym(prop->expr, e, sym) {
1081 if (def == cnt++) {
1082 sym->def[S_DEF_USER].tri = yes;
1083 csym->def[S_DEF_USER].val = sym;
1084 }
1085 else {
1086 sym->def[S_DEF_USER].tri = no;
1087 }
1088 sym->flags |= SYMBOL_DEF_USER;
1089
1090 sym->flags &= ~SYMBOL_VALID;
1091 }
1092 csym->flags |= SYMBOL_DEF_USER;
1093
1094 csym->flags &= ~(SYMBOL_VALID);
1095
1096 return true;
1097}
1098
1099void set_all_choice_values(struct symbol *csym)
1100{
1101 struct property *prop;
1102 struct symbol *sym;
1103 struct expr *e;
1104
1105 prop = sym_get_choice_prop(csym);
1106
1107
1108
1109
1110 expr_list_for_each_sym(prop->expr, e, sym) {
1111 if (!sym_has_value(sym))
1112 sym->def[S_DEF_USER].tri = no;
1113 }
1114 csym->flags |= SYMBOL_DEF_USER;
1115
1116 csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES);
1117}
1118
1119bool conf_set_all_new_symbols(enum conf_def_mode mode)
1120{
1121 struct symbol *sym, *csym;
1122 int i, cnt, pby, pty, ptm;
1123
1124
1125
1126
1127 pby = 50; pty = ptm = 33;
1128
1129
1130 if (mode == def_random) {
1131 int n, p[3];
1132 char *env = getenv("KCONFIG_PROBABILITY");
1133 n = 0;
1134 while( env && *env ) {
1135 char *endp;
1136 int tmp = strtol( env, &endp, 10 );
1137 if( tmp >= 0 && tmp <= 100 ) {
1138 p[n++] = tmp;
1139 } else {
1140 errno = ERANGE;
1141 perror( "KCONFIG_PROBABILITY" );
1142 exit( 1 );
1143 }
1144 env = (*endp == ':') ? endp+1 : endp;
1145 if( n >=3 ) {
1146 break;
1147 }
1148 }
1149 switch( n ) {
1150 case 1:
1151 pby = p[0]; ptm = pby/2; pty = pby-ptm;
1152 break;
1153 case 2:
1154 pty = p[0]; ptm = p[1]; pby = pty + ptm;
1155 break;
1156 case 3:
1157 pby = p[0]; pty = p[1]; ptm = p[2];
1158 break;
1159 }
1160
1161 if( pty+ptm > 100 ) {
1162 errno = ERANGE;
1163 perror( "KCONFIG_PROBABILITY" );
1164 exit( 1 );
1165 }
1166 }
1167 bool has_changed = false;
1168
1169 for_all_symbols(i, sym) {
1170 if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID))
1171 continue;
1172 switch (sym_get_type(sym)) {
1173 case S_BOOLEAN:
1174 case S_TRISTATE:
1175 has_changed = true;
1176 switch (mode) {
1177 case def_yes:
1178 sym->def[S_DEF_USER].tri = yes;
1179 break;
1180 case def_mod:
1181 sym->def[S_DEF_USER].tri = mod;
1182 break;
1183 case def_no:
1184 if (sym->flags & SYMBOL_ALLNOCONFIG_Y)
1185 sym->def[S_DEF_USER].tri = yes;
1186 else
1187 sym->def[S_DEF_USER].tri = no;
1188 break;
1189 case def_random:
1190 sym->def[S_DEF_USER].tri = no;
1191 cnt = rand() % 100;
1192 if (sym->type == S_TRISTATE) {
1193 if (cnt < pty)
1194 sym->def[S_DEF_USER].tri = yes;
1195 else if (cnt < (pty+ptm))
1196 sym->def[S_DEF_USER].tri = mod;
1197 } else if (cnt < pby)
1198 sym->def[S_DEF_USER].tri = yes;
1199 break;
1200 default:
1201 continue;
1202 }
1203 if (!(sym_is_choice(sym) && mode == def_random))
1204 sym->flags |= SYMBOL_DEF_USER;
1205 break;
1206 default:
1207 break;
1208 }
1209
1210 }
1211
1212 sym_clear_all_valid();
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223 if (mode != def_random) {
1224 for_all_symbols(i, csym) {
1225 if ((sym_is_choice(csym) && !sym_has_value(csym)) ||
1226 sym_is_choice_value(csym))
1227 csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES;
1228 }
1229 }
1230
1231 for_all_symbols(i, csym) {
1232 if (sym_has_value(csym) || !sym_is_choice(csym))
1233 continue;
1234
1235 sym_calc_value(csym);
1236 if (mode == def_random)
1237 has_changed = randomize_choice_values(csym);
1238 else {
1239 set_all_choice_values(csym);
1240 has_changed = true;
1241 }
1242 }
1243
1244 return has_changed;
1245}
1246
