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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 if (modules_sym)
272 sym_calc_value(modules_sym);
273 return 1;
274 }
275
276 for_all_defaults(sym_defconfig_list, prop) {
277 if (expr_calc_value(prop->visible.expr) == no ||
278 prop->expr->type != E_SYMBOL)
279 continue;
280 name = conf_expand_value(prop->expr->left.sym->name);
281 in = zconf_fopen(name);
282 if (in) {
283 conf_message(_("using defaults found in %s"),
284 name);
285 goto load;
286 }
287 }
288 }
289 if (!in)
290 return 1;
291
292load:
293 conf_filename = name;
294 conf_lineno = 0;
295 conf_warnings = 0;
296 conf_unsaved = 0;
297
298 def_flags = SYMBOL_DEF << def;
299 for_all_symbols(i, sym) {
300 sym->flags |= SYMBOL_CHANGED;
301 sym->flags &= ~(def_flags|SYMBOL_VALID);
302 if (sym_is_choice(sym))
303 sym->flags |= def_flags;
304 switch (sym->type) {
305 case S_INT:
306 case S_HEX:
307 case S_STRING:
308 if (sym->def[def].val)
309 free(sym->def[def].val);
310
311 default:
312 sym->def[def].val = NULL;
313 sym->def[def].tri = no;
314 }
315 }
316
317 while (compat_getline(&line, &line_asize, in) != -1) {
318 conf_lineno++;
319 sym = NULL;
320 if (line[0] == '#') {
321 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
322 continue;
323 p = strchr(line + 2 + strlen(CONFIG_), ' ');
324 if (!p)
325 continue;
326 *p++ = 0;
327 if (strncmp(p, "is not set", 10))
328 continue;
329 if (def == S_DEF_USER) {
330 sym = sym_find(line + 2 + strlen(CONFIG_));
331 if (!sym) {
332 sym_add_change_count(1);
333 goto setsym;
334 }
335 } else {
336 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
337 if (sym->type == S_UNKNOWN)
338 sym->type = S_BOOLEAN;
339 }
340 if (sym->flags & def_flags) {
341 conf_warning("override: reassigning to symbol %s", sym->name);
342 }
343 switch (sym->type) {
344 case S_BOOLEAN:
345 case S_TRISTATE:
346 sym->def[def].tri = no;
347 sym->flags |= def_flags;
348 break;
349 default:
350 ;
351 }
352 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
353 p = strchr(line + strlen(CONFIG_), '=');
354 if (!p)
355 continue;
356 *p++ = 0;
357 p2 = strchr(p, '\n');
358 if (p2) {
359 *p2-- = 0;
360 if (*p2 == '\r')
361 *p2 = 0;
362 }
363 if (def == S_DEF_USER) {
364 sym = sym_find(line + strlen(CONFIG_));
365 if (!sym) {
366 sym_add_change_count(1);
367 goto setsym;
368 }
369 } else {
370 sym = sym_lookup(line + strlen(CONFIG_), 0);
371 if (sym->type == S_UNKNOWN)
372 sym->type = S_OTHER;
373 }
374 if (sym->flags & def_flags) {
375 conf_warning("override: reassigning to symbol %s", sym->name);
376 }
377 if (conf_set_sym_val(sym, def, def_flags, p))
378 continue;
379 } else {
380 if (line[0] != '\r' && line[0] != '\n')
381 conf_warning("unexpected data");
382 continue;
383 }
384setsym:
385 if (sym && sym_is_choice_value(sym)) {
386 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
387 switch (sym->def[def].tri) {
388 case no:
389 break;
390 case mod:
391 if (cs->def[def].tri == yes) {
392 conf_warning("%s creates inconsistent choice state", sym->name);
393 cs->flags &= ~def_flags;
394 }
395 break;
396 case yes:
397 if (cs->def[def].tri != no)
398 conf_warning("override: %s changes choice state", sym->name);
399 cs->def[def].val = sym;
400 break;
401 }
402 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
403 }
404 }
405 free(line);
406 fclose(in);
407
408 if (modules_sym)
409 sym_calc_value(modules_sym);
410 return 0;
411}
412
413int conf_read(const char *name)
414{
415 struct symbol *sym;
416 int i;
417
418 sym_set_change_count(0);
419
420 if (conf_read_simple(name, S_DEF_USER))
421 return 1;
422
423 for_all_symbols(i, sym) {
424 sym_calc_value(sym);
425 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
426 continue;
427 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
428
429 switch (sym->type) {
430 case S_BOOLEAN:
431 case S_TRISTATE:
432 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
433 break;
434 if (!sym_is_choice(sym))
435 continue;
436
437 default:
438 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
439 continue;
440 break;
441 }
442 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
443
444 continue;
445 conf_unsaved++;
446
447 }
448
449 for_all_symbols(i, sym) {
450 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
451
452
453
454
455
456 if (sym->visible == no && !conf_unsaved)
457 sym->flags &= ~SYMBOL_DEF_USER;
458 switch (sym->type) {
459 case S_STRING:
460 case S_INT:
461 case S_HEX:
462
463 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
464 break;
465 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
466 conf_unsaved++;
467 break;
468 default:
469 break;
470 }
471 }
472 }
473
474 sym_add_change_count(conf_warnings || conf_unsaved);
475
476 return 0;
477}
478
479
480
481
482
483
484
485
486
487static void
488kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
489{
490
491 switch (sym->type) {
492 case S_BOOLEAN:
493 case S_TRISTATE:
494 if (*value == 'n') {
495 bool skip_unset = (arg != NULL);
496
497 if (!skip_unset)
498 fprintf(fp, "# %s%s is not set\n",
499 CONFIG_, sym->name);
500 return;
501 }
502 break;
503 default:
504 break;
505 }
506
507 fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
508}
509
510static void
511kconfig_print_comment(FILE *fp, const char *value, void *arg)
512{
513 const char *p = value;
514 size_t l;
515
516 for (;;) {
517 l = strcspn(p, "\n");
518 fprintf(fp, "#");
519 if (l) {
520 fprintf(fp, " ");
521 xfwrite(p, l, 1, fp);
522 p += l;
523 }
524 fprintf(fp, "\n");
525 if (*p++ == '\0')
526 break;
527 }
528}
529
530static struct conf_printer kconfig_printer_cb =
531{
532 .print_symbol = kconfig_print_symbol,
533 .print_comment = kconfig_print_comment,
534};
535
536
537
538
539
540
541static void
542header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
543{
544
545 switch (sym->type) {
546 case S_BOOLEAN:
547 case S_TRISTATE: {
548 const char *suffix = "";
549
550 switch (*value) {
551 case 'n':
552 break;
553 case 'm':
554 suffix = "_MODULE";
555
556 default:
557 fprintf(fp, "#define %s%s%s 1\n",
558 CONFIG_, sym->name, suffix);
559 }
560 break;
561 }
562 case S_HEX: {
563 const char *prefix = "";
564
565 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
566 prefix = "0x";
567 fprintf(fp, "#define %s%s %s%s\n",
568 CONFIG_, sym->name, prefix, value);
569 break;
570 }
571 case S_STRING:
572 case S_INT:
573 fprintf(fp, "#define %s%s %s\n",
574 CONFIG_, sym->name, value);
575 break;
576 default:
577 break;
578 }
579
580}
581
582static void
583header_print_comment(FILE *fp, const char *value, void *arg)
584{
585 const char *p = value;
586 size_t l;
587
588 fprintf(fp, "/*\n");
589 for (;;) {
590 l = strcspn(p, "\n");
591 fprintf(fp, " *");
592 if (l) {
593 fprintf(fp, " ");
594 xfwrite(p, l, 1, fp);
595 p += l;
596 }
597 fprintf(fp, "\n");
598 if (*p++ == '\0')
599 break;
600 }
601 fprintf(fp, " */\n");
602}
603
604static struct conf_printer header_printer_cb =
605{
606 .print_symbol = header_print_symbol,
607 .print_comment = header_print_comment,
608};
609
610
611
612
613
614
615static void
616tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
617{
618
619 if (sym->type == S_TRISTATE && *value != 'n')
620 fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
621}
622
623static struct conf_printer tristate_printer_cb =
624{
625 .print_symbol = tristate_print_symbol,
626 .print_comment = kconfig_print_comment,
627};
628
629static void conf_write_symbol(FILE *fp, struct symbol *sym,
630 struct conf_printer *printer, void *printer_arg)
631{
632 const char *str;
633
634 switch (sym->type) {
635 case S_OTHER:
636 case S_UNKNOWN:
637 break;
638 case S_STRING:
639 str = sym_get_string_value(sym);
640 str = sym_escape_string_value(str);
641 printer->print_symbol(fp, sym, str, printer_arg);
642 free((void *)str);
643 break;
644 default:
645 str = sym_get_string_value(sym);
646 printer->print_symbol(fp, sym, str, printer_arg);
647 }
648}
649
650static void
651conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
652{
653 char buf[256];
654
655 snprintf(buf, sizeof(buf),
656 "\n"
657 "Automatically generated file; DO NOT EDIT.\n"
658 "%s\n",
659 rootmenu.prompt->text);
660
661 printer->print_comment(fp, buf, printer_arg);
662}
663
664
665
666
667
668int conf_write_defconfig(const char *filename)
669{
670 struct symbol *sym;
671 struct menu *menu;
672 FILE *out;
673
674 out = fopen(filename, "w");
675 if (!out)
676 return 1;
677
678 sym_clear_all_valid();
679
680
681 menu = rootmenu.list;
682
683 while (menu != NULL)
684 {
685 sym = menu->sym;
686 if (sym == NULL) {
687 if (!menu_is_visible(menu))
688 goto next_menu;
689 } else if (!sym_is_choice(sym)) {
690 sym_calc_value(sym);
691 if (!(sym->flags & SYMBOL_WRITE))
692 goto next_menu;
693 sym->flags &= ~SYMBOL_WRITE;
694
695 if (!sym_is_changable(sym))
696 goto next_menu;
697
698 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
699 goto next_menu;
700
701
702
703
704
705
706
707
708 if (sym_is_choice_value(sym)) {
709 struct symbol *cs;
710 struct symbol *ds;
711
712 cs = prop_get_symbol(sym_get_choice_prop(sym));
713 ds = sym_choice_default(cs);
714 if (!sym_is_optional(cs) && sym == ds) {
715 if ((sym->type == S_BOOLEAN) &&
716 sym_get_tristate_value(sym) == yes)
717 goto next_menu;
718 }
719 }
720 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
721 }
722next_menu:
723 if (menu->list != NULL) {
724 menu = menu->list;
725 }
726 else if (menu->next != NULL) {
727 menu = menu->next;
728 } else {
729 while ((menu = menu->parent)) {
730 if (menu->next != NULL) {
731 menu = menu->next;
732 break;
733 }
734 }
735 }
736 }
737 fclose(out);
738 return 0;
739}
740
741int conf_write(const char *name)
742{
743 FILE *out;
744 struct symbol *sym;
745 struct menu *menu;
746 const char *basename;
747 const char *str;
748 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
749 char *env;
750
751 dirname[0] = 0;
752 if (name && name[0]) {
753 struct stat st;
754 char *slash;
755
756 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
757 strcpy(dirname, name);
758 strcat(dirname, "/");
759 basename = conf_get_configname();
760 } else if ((slash = strrchr(name, '/'))) {
761 int size = slash - name + 1;
762 memcpy(dirname, name, size);
763 dirname[size] = 0;
764 if (slash[1])
765 basename = slash + 1;
766 else
767 basename = conf_get_configname();
768 } else
769 basename = name;
770 } else
771 basename = conf_get_configname();
772
773 sprintf(newname, "%s%s", dirname, basename);
774 env = getenv("KCONFIG_OVERWRITECONFIG");
775 if (!env || !*env) {
776 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
777 out = fopen(tmpname, "w");
778 } else {
779 *tmpname = 0;
780 out = fopen(newname, "w");
781 }
782 if (!out)
783 return 1;
784
785 conf_write_heading(out, &kconfig_printer_cb, NULL);
786
787 if (!conf_get_changed())
788 sym_clear_all_valid();
789
790 menu = rootmenu.list;
791 while (menu) {
792 sym = menu->sym;
793 if (!sym) {
794 if (!menu_is_visible(menu))
795 goto next;
796 str = menu_get_prompt(menu);
797 fprintf(out, "\n"
798 "#\n"
799 "# %s\n"
800 "#\n", str);
801 } else if (!(sym->flags & SYMBOL_CHOICE)) {
802 sym_calc_value(sym);
803 if (!(sym->flags & SYMBOL_WRITE))
804 goto next;
805 sym->flags &= ~SYMBOL_WRITE;
806
807 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
808 }
809
810next:
811 if (menu->list) {
812 menu = menu->list;
813 continue;
814 }
815 if (menu->next)
816 menu = menu->next;
817 else while ((menu = menu->parent)) {
818 if (menu->next) {
819 menu = menu->next;
820 break;
821 }
822 }
823 }
824 fclose(out);
825
826 if (*tmpname) {
827 strcat(dirname, basename);
828 strcat(dirname, ".old");
829 rename(newname, dirname);
830 if (rename(tmpname, newname))
831 return 1;
832 }
833
834 conf_message(_("configuration written to %s"), newname);
835
836 sym_set_change_count(0);
837
838 return 0;
839}
840
841static int conf_split_config(void)
842{
843 const char *name;
844 char path[PATH_MAX+1];
845 char *s, *d, c;
846 struct symbol *sym;
847 struct stat sb;
848 int res, i, fd;
849
850 name = conf_get_autoconfig_name();
851 conf_read_simple(name, S_DEF_AUTO);
852
853 if (chdir("include/config"))
854 return 1;
855
856 res = 0;
857 for_all_symbols(i, sym) {
858 sym_calc_value(sym);
859 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
860 continue;
861 if (sym->flags & SYMBOL_WRITE) {
862 if (sym->flags & SYMBOL_DEF_AUTO) {
863
864
865
866
867 switch (sym->type) {
868 case S_BOOLEAN:
869 case S_TRISTATE:
870 if (sym_get_tristate_value(sym) ==
871 sym->def[S_DEF_AUTO].tri)
872 continue;
873 break;
874 case S_STRING:
875 case S_HEX:
876 case S_INT:
877 if (!strcmp(sym_get_string_value(sym),
878 sym->def[S_DEF_AUTO].val))
879 continue;
880 break;
881 default:
882 break;
883 }
884 } else {
885
886
887
888
889 switch (sym->type) {
890 case S_BOOLEAN:
891 case S_TRISTATE:
892 if (sym_get_tristate_value(sym) == no)
893 continue;
894 break;
895 default:
896 break;
897 }
898 }
899 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
900
901 continue;
902
903
904
905
906
907
908
909 s = sym->name;
910 d = path;
911 while ((c = *s++)) {
912 c = tolower(c);
913 *d++ = (c == '_') ? '/' : c;
914 }
915 strcpy(d, ".h");
916
917
918 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
919 if (fd == -1) {
920 if (errno != ENOENT) {
921 res = 1;
922 break;
923 }
924
925
926
927
928 d = path;
929 while ((d = strchr(d, '/'))) {
930 *d = 0;
931 if (stat(path, &sb) && mkdir(path, 0755)) {
932 res = 1;
933 goto out;
934 }
935 *d++ = '/';
936 }
937
938 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
939 if (fd == -1) {
940 res = 1;
941 break;
942 }
943 }
944 close(fd);
945 }
946out:
947 if (chdir("../.."))
948 return 1;
949
950 return res;
951}
952
953int conf_write_autoconf(void)
954{
955 struct symbol *sym;
956 const char *name;
957 FILE *out, *tristate, *out_h;
958 int i;
959
960 sym_clear_all_valid();
961
962 file_write_dep("include/config/auto.conf.cmd");
963
964 if (conf_split_config())
965 return 1;
966
967 out = fopen(".tmpconfig", "w");
968 if (!out)
969 return 1;
970
971 tristate = fopen(".tmpconfig_tristate", "w");
972 if (!tristate) {
973 fclose(out);
974 return 1;
975 }
976
977 out_h = fopen(".tmpconfig.h", "w");
978 if (!out_h) {
979 fclose(out);
980 fclose(tristate);
981 return 1;
982 }
983
984 conf_write_heading(out, &kconfig_printer_cb, NULL);
985
986 conf_write_heading(tristate, &tristate_printer_cb, NULL);
987
988 conf_write_heading(out_h, &header_printer_cb, NULL);
989
990 for_all_symbols(i, sym) {
991 sym_calc_value(sym);
992 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
993 continue;
994
995
996 conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
997
998 conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);
999
1000 conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
1001 }
1002 fclose(out);
1003 fclose(tristate);
1004 fclose(out_h);
1005
1006 name = getenv("KCONFIG_AUTOHEADER");
1007 if (!name)
1008 name = "include/generated/autoconf.h";
1009 if (rename(".tmpconfig.h", name))
1010 return 1;
1011 name = getenv("KCONFIG_TRISTATE");
1012 if (!name)
1013 name = "include/config/tristate.conf";
1014 if (rename(".tmpconfig_tristate", name))
1015 return 1;
1016 name = conf_get_autoconfig_name();
1017
1018
1019
1020
1021 if (rename(".tmpconfig", name))
1022 return 1;
1023
1024 return 0;
1025}
1026
1027static int sym_change_count;
1028static void (*conf_changed_callback)(void);
1029
1030void sym_set_change_count(int count)
1031{
1032 int _sym_change_count = sym_change_count;
1033 sym_change_count = count;
1034 if (conf_changed_callback &&
1035 (bool)_sym_change_count != (bool)count)
1036 conf_changed_callback();
1037}
1038
1039void sym_add_change_count(int count)
1040{
1041 sym_set_change_count(count + sym_change_count);
1042}
1043
1044bool conf_get_changed(void)
1045{
1046 return sym_change_count;
1047}
1048
1049void conf_set_changed_callback(void (*fn)(void))
1050{
1051 conf_changed_callback = fn;
1052}
1053
1054static bool randomize_choice_values(struct symbol *csym)
1055{
1056 struct property *prop;
1057 struct symbol *sym;
1058 struct expr *e;
1059 int cnt, def;
1060
1061
1062
1063
1064
1065
1066 if (csym->curr.tri != yes)
1067 return false;
1068
1069 prop = sym_get_choice_prop(csym);
1070
1071
1072 cnt = 0;
1073 expr_list_for_each_sym(prop->expr, e, sym)
1074 cnt++;
1075
1076
1077
1078
1079
1080 def = (rand() % cnt);
1081
1082 cnt = 0;
1083 expr_list_for_each_sym(prop->expr, e, sym) {
1084 if (def == cnt++) {
1085 sym->def[S_DEF_USER].tri = yes;
1086 csym->def[S_DEF_USER].val = sym;
1087 }
1088 else {
1089 sym->def[S_DEF_USER].tri = no;
1090 }
1091 sym->flags |= SYMBOL_DEF_USER;
1092
1093 sym->flags &= ~SYMBOL_VALID;
1094 }
1095 csym->flags |= SYMBOL_DEF_USER;
1096
1097 csym->flags &= ~(SYMBOL_VALID);
1098
1099 return true;
1100}
1101
1102void set_all_choice_values(struct symbol *csym)
1103{
1104 struct property *prop;
1105 struct symbol *sym;
1106 struct expr *e;
1107
1108 prop = sym_get_choice_prop(csym);
1109
1110
1111
1112
1113 expr_list_for_each_sym(prop->expr, e, sym) {
1114 if (!sym_has_value(sym))
1115 sym->def[S_DEF_USER].tri = no;
1116 }
1117 csym->flags |= SYMBOL_DEF_USER;
1118
1119 csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES);
1120}
1121
1122bool conf_set_all_new_symbols(enum conf_def_mode mode)
1123{
1124 struct symbol *sym, *csym;
1125 int i, cnt, pby, pty, ptm;
1126
1127
1128
1129
1130 pby = 50; pty = ptm = 33;
1131
1132
1133 if (mode == def_random) {
1134 int n, p[3];
1135 char *env = getenv("KCONFIG_PROBABILITY");
1136 n = 0;
1137 while( env && *env ) {
1138 char *endp;
1139 int tmp = strtol( env, &endp, 10 );
1140 if( tmp >= 0 && tmp <= 100 ) {
1141 p[n++] = tmp;
1142 } else {
1143 errno = ERANGE;
1144 perror( "KCONFIG_PROBABILITY" );
1145 exit( 1 );
1146 }
1147 env = (*endp == ':') ? endp+1 : endp;
1148 if( n >=3 ) {
1149 break;
1150 }
1151 }
1152 switch( n ) {
1153 case 1:
1154 pby = p[0]; ptm = pby/2; pty = pby-ptm;
1155 break;
1156 case 2:
1157 pty = p[0]; ptm = p[1]; pby = pty + ptm;
1158 break;
1159 case 3:
1160 pby = p[0]; pty = p[1]; ptm = p[2];
1161 break;
1162 }
1163
1164 if( pty+ptm > 100 ) {
1165 errno = ERANGE;
1166 perror( "KCONFIG_PROBABILITY" );
1167 exit( 1 );
1168 }
1169 }
1170 bool has_changed = false;
1171
1172 for_all_symbols(i, sym) {
1173 if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID))
1174 continue;
1175 switch (sym_get_type(sym)) {
1176 case S_BOOLEAN:
1177 case S_TRISTATE:
1178 has_changed = true;
1179 switch (mode) {
1180 case def_yes:
1181 sym->def[S_DEF_USER].tri = yes;
1182 break;
1183 case def_mod:
1184 sym->def[S_DEF_USER].tri = mod;
1185 break;
1186 case def_no:
1187 if (sym->flags & SYMBOL_ALLNOCONFIG_Y)
1188 sym->def[S_DEF_USER].tri = yes;
1189 else
1190 sym->def[S_DEF_USER].tri = no;
1191 break;
1192 case def_random:
1193 sym->def[S_DEF_USER].tri = no;
1194 cnt = rand() % 100;
1195 if (sym->type == S_TRISTATE) {
1196 if (cnt < pty)
1197 sym->def[S_DEF_USER].tri = yes;
1198 else if (cnt < (pty+ptm))
1199 sym->def[S_DEF_USER].tri = mod;
1200 } else if (cnt < pby)
1201 sym->def[S_DEF_USER].tri = yes;
1202 break;
1203 default:
1204 continue;
1205 }
1206 if (!(sym_is_choice(sym) && mode == def_random))
1207 sym->flags |= SYMBOL_DEF_USER;
1208 break;
1209 default:
1210 break;
1211 }
1212
1213 }
1214
1215 sym_clear_all_valid();
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226 if (mode != def_random) {
1227 for_all_symbols(i, csym) {
1228 if ((sym_is_choice(csym) && !sym_has_value(csym)) ||
1229 sym_is_choice_value(csym))
1230 csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES;
1231 }
1232 }
1233
1234 for_all_symbols(i, csym) {
1235 if (sym_has_value(csym) || !sym_is_choice(csym))
1236 continue;
1237
1238 sym_calc_value(csym);
1239 if (mode == def_random)
1240 has_changed = randomize_choice_values(csym);
1241 else {
1242 set_all_choice_values(csym);
1243 has_changed = true;
1244 }
1245 }
1246
1247 return has_changed;
1248}
1249
