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
165 if (p[strlen(p) - 1] != '"') {
166 if (def != S_DEF_AUTO)
167 conf_warning("invalid string found");
168 return 1;
169 }
170
171 p[strlen(p) - 1] = 0;
172
173 case S_INT:
174 case S_HEX:
175 done:
176 if (sym_string_valid(sym, p)) {
177 sym->def[def].val = strdup(p);
178 sym->flags |= def_flags;
179 } else {
180 if (def != S_DEF_AUTO)
181 conf_warning("symbol value '%s' invalid for %s",
182 p, sym->name);
183 return 1;
184 }
185 break;
186 default:
187 ;
188 }
189 return 0;
190}
191
192#define LINE_GROWTH 16
193static int add_byte(int c, char **lineptr, size_t slen, size_t *n)
194{
195 char *nline;
196 size_t new_size = slen + 1;
197 if (new_size > *n) {
198 new_size += LINE_GROWTH - 1;
199 new_size *= 2;
200 nline = realloc(*lineptr, new_size);
201 if (!nline)
202 return -1;
203
204 *lineptr = nline;
205 *n = new_size;
206 }
207
208 (*lineptr)[slen] = c;
209
210 return 0;
211}
212
213static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream)
214{
215 char *line = *lineptr;
216 size_t slen = 0;
217
218 for (;;) {
219 int c = getc(stream);
220
221 switch (c) {
222 case '\n':
223 if (add_byte(c, &line, slen, n) < 0)
224 goto e_out;
225 slen++;
226
227 case EOF:
228 if (add_byte('\0', &line, slen, n) < 0)
229 goto e_out;
230 *lineptr = line;
231 if (slen == 0)
232 return -1;
233 return slen;
234 default:
235 if (add_byte(c, &line, slen, n) < 0)
236 goto e_out;
237 slen++;
238 }
239 }
240
241e_out:
242 line[slen-1] = '\0';
243 *lineptr = line;
244 return -1;
245}
246
247int conf_read_simple(const char *name, int def)
248{
249 FILE *in = NULL;
250 char *line = NULL;
251 size_t line_asize = 0;
252 char *p, *p2;
253 struct symbol *sym;
254 int i, def_flags;
255
256 if (name) {
257 in = zconf_fopen(name);
258 } else {
259 struct property *prop;
260
261 name = conf_get_configname();
262 in = zconf_fopen(name);
263 if (in)
264 goto load;
265 sym_add_change_count(1);
266 if (!sym_defconfig_list) {
267 if (modules_sym)
268 sym_calc_value(modules_sym);
269 return 1;
270 }
271
272 for_all_defaults(sym_defconfig_list, prop) {
273 if (expr_calc_value(prop->visible.expr) == no ||
274 prop->expr->type != E_SYMBOL)
275 continue;
276 name = conf_expand_value(prop->expr->left.sym->name);
277 in = zconf_fopen(name);
278 if (in) {
279 conf_message(_("using defaults found in %s"),
280 name);
281 goto load;
282 }
283 }
284 }
285 if (!in)
286 return 1;
287
288load:
289 conf_filename = name;
290 conf_lineno = 0;
291 conf_warnings = 0;
292 conf_unsaved = 0;
293
294 def_flags = SYMBOL_DEF << def;
295 for_all_symbols(i, sym) {
296 sym->flags |= SYMBOL_CHANGED;
297 sym->flags &= ~(def_flags|SYMBOL_VALID);
298 if (sym_is_choice(sym))
299 sym->flags |= def_flags;
300 switch (sym->type) {
301 case S_INT:
302 case S_HEX:
303 case S_STRING:
304 if (sym->def[def].val)
305 free(sym->def[def].val);
306
307 default:
308 sym->def[def].val = NULL;
309 sym->def[def].tri = no;
310 }
311 }
312
313 while (compat_getline(&line, &line_asize, in) != -1) {
314 conf_lineno++;
315 sym = NULL;
316 if (line[0] == '#') {
317 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
318 continue;
319 p = strchr(line + 2 + strlen(CONFIG_), ' ');
320 if (!p)
321 continue;
322 *p++ = 0;
323 if (strncmp(p, "is not set", 10))
324 continue;
325 if (def == S_DEF_USER) {
326 sym = sym_find(line + 2 + strlen(CONFIG_));
327 if (!sym) {
328 sym_add_change_count(1);
329 goto setsym;
330 }
331 } else {
332 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
333 if (sym->type == S_UNKNOWN)
334 sym->type = S_BOOLEAN;
335 }
336 if (sym->flags & def_flags) {
337 conf_warning("override: reassigning to symbol %s", sym->name);
338 }
339 switch (sym->type) {
340 case S_BOOLEAN:
341 case S_TRISTATE:
342 sym->def[def].tri = no;
343 sym->flags |= def_flags;
344 break;
345 default:
346 ;
347 }
348 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
349 p = strchr(line + strlen(CONFIG_), '=');
350 if (!p)
351 continue;
352 *p++ = 0;
353 p2 = strchr(p, '\n');
354 if (p2) {
355 *p2-- = 0;
356 if (*p2 == '\r')
357 *p2 = 0;
358 }
359 if (def == S_DEF_USER) {
360 sym = sym_find(line + strlen(CONFIG_));
361 if (!sym) {
362 sym_add_change_count(1);
363 goto setsym;
364 }
365 } else {
366 sym = sym_lookup(line + strlen(CONFIG_), 0);
367 if (sym->type == S_UNKNOWN)
368 sym->type = S_OTHER;
369 }
370 if (sym->flags & def_flags) {
371 conf_warning("override: reassigning to symbol %s", sym->name);
372 }
373 if (conf_set_sym_val(sym, def, def_flags, p))
374 continue;
375 } else {
376 if (line[0] != '\r' && line[0] != '\n')
377 conf_warning("unexpected data");
378 continue;
379 }
380setsym:
381 if (sym && sym_is_choice_value(sym)) {
382 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
383 switch (sym->def[def].tri) {
384 case no:
385 break;
386 case mod:
387 if (cs->def[def].tri == yes) {
388 conf_warning("%s creates inconsistent choice state", sym->name);
389 cs->flags &= ~def_flags;
390 }
391 break;
392 case yes:
393 if (cs->def[def].tri != no)
394 conf_warning("override: %s changes choice state", sym->name);
395 cs->def[def].val = sym;
396 break;
397 }
398 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
399 }
400 }
401 free(line);
402 fclose(in);
403
404 if (modules_sym)
405 sym_calc_value(modules_sym);
406 return 0;
407}
408
409int conf_read(const char *name)
410{
411 struct symbol *sym;
412 int i;
413
414 sym_set_change_count(0);
415
416 if (conf_read_simple(name, S_DEF_USER))
417 return 1;
418
419 for_all_symbols(i, sym) {
420 sym_calc_value(sym);
421 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
422 continue;
423 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
424
425 switch (sym->type) {
426 case S_BOOLEAN:
427 case S_TRISTATE:
428 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
429 break;
430 if (!sym_is_choice(sym))
431 continue;
432
433 default:
434 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
435 continue;
436 break;
437 }
438 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
439
440 continue;
441 conf_unsaved++;
442
443 }
444
445 for_all_symbols(i, sym) {
446 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
447
448
449
450
451
452 if (sym->visible == no && !conf_unsaved)
453 sym->flags &= ~SYMBOL_DEF_USER;
454 switch (sym->type) {
455 case S_STRING:
456 case S_INT:
457 case S_HEX:
458
459 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
460 break;
461 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
462 conf_unsaved++;
463 break;
464 default:
465 break;
466 }
467 }
468 }
469
470 sym_add_change_count(conf_warnings || conf_unsaved);
471
472 return 0;
473}
474
475
476
477
478
479
480
481
482
483static void
484kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
485{
486
487 switch (sym->type) {
488 case S_BOOLEAN:
489 case S_TRISTATE:
490 if (*value == 'n') {
491 bool skip_unset = (arg != NULL);
492
493 if (!skip_unset)
494 fprintf(fp, "# %s%s is not set\n",
495 CONFIG_, sym->name);
496 return;
497 }
498 break;
499 default:
500 break;
501 }
502
503 fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
504}
505
506static void
507kconfig_print_comment(FILE *fp, const char *value, void *arg)
508{
509 const char *p = value;
510 size_t l;
511
512 for (;;) {
513 l = strcspn(p, "\n");
514 fprintf(fp, "#");
515 if (l) {
516 fprintf(fp, " ");
517 xfwrite(p, l, 1, fp);
518 p += l;
519 }
520 fprintf(fp, "\n");
521 if (*p++ == '\0')
522 break;
523 }
524}
525
526static struct conf_printer kconfig_printer_cb =
527{
528 .print_symbol = kconfig_print_symbol,
529 .print_comment = kconfig_print_comment,
530};
531
532
533
534
535
536
537static void
538header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
539{
540
541 switch (sym->type) {
542 case S_BOOLEAN:
543 case S_TRISTATE: {
544 const char *suffix = "";
545
546 switch (*value) {
547 case 'n':
548 break;
549 case 'm':
550 suffix = "_MODULE";
551
552 default:
553 fprintf(fp, "#define %s%s%s 1\n",
554 CONFIG_, sym->name, suffix);
555 }
556 break;
557 }
558 case S_HEX: {
559 const char *prefix = "";
560
561 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
562 prefix = "0x";
563 fprintf(fp, "#define %s%s %s%s\n",
564 CONFIG_, sym->name, prefix, value);
565 break;
566 }
567 case S_STRING:
568 case S_INT:
569 fprintf(fp, "#define %s%s %s\n",
570 CONFIG_, sym->name, value);
571 break;
572 default:
573 break;
574 }
575
576}
577
578static void
579header_print_comment(FILE *fp, const char *value, void *arg)
580{
581 const char *p = value;
582 size_t l;
583
584 fprintf(fp, "/*\n");
585 for (;;) {
586 l = strcspn(p, "\n");
587 fprintf(fp, " *");
588 if (l) {
589 fprintf(fp, " ");
590 xfwrite(p, l, 1, fp);
591 p += l;
592 }
593 fprintf(fp, "\n");
594 if (*p++ == '\0')
595 break;
596 }
597 fprintf(fp, " */\n");
598}
599
600static struct conf_printer header_printer_cb =
601{
602 .print_symbol = header_print_symbol,
603 .print_comment = header_print_comment,
604};
605
606
607
608
609
610
611static void
612tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
613{
614
615 if (sym->type == S_TRISTATE && *value != 'n')
616 fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
617}
618
619static struct conf_printer tristate_printer_cb =
620{
621 .print_symbol = tristate_print_symbol,
622 .print_comment = kconfig_print_comment,
623};
624
625static void conf_write_symbol(FILE *fp, struct symbol *sym,
626 struct conf_printer *printer, void *printer_arg)
627{
628 const char *str;
629 char *str2;
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 str2 = xmalloc(strlen(str) + 3);
638 sprintf(str2, "\"%s\"", str);
639 printer->print_symbol(fp, sym, str2, printer_arg);
640 free((void *)str2);
641 break;
642 default:
643 str = sym_get_string_value(sym);
644 printer->print_symbol(fp, sym, str, printer_arg);
645 }
646}
647
648static void
649conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
650{
651 char buf[256];
652
653 snprintf(buf, sizeof(buf),
654 "\n"
655 "Automatically generated file; DO NOT EDIT.\n"
656 "%s\n",
657 rootmenu.prompt->text);
658
659 printer->print_comment(fp, buf, printer_arg);
660}
661
662
663
664
665
666int conf_write_defconfig(const char *filename)
667{
668 struct symbol *sym;
669 struct menu *menu;
670 FILE *out;
671
672 out = fopen(filename, "w");
673 if (!out)
674 return 1;
675
676 sym_clear_all_valid();
677
678
679 menu = rootmenu.list;
680
681 while (menu != NULL)
682 {
683 sym = menu->sym;
684 if (sym == NULL) {
685 if (!menu_is_visible(menu))
686 goto next_menu;
687 } else if (!sym_is_choice(sym)) {
688 sym_calc_value(sym);
689 if (!(sym->flags & SYMBOL_WRITE))
690 goto next_menu;
691 sym->flags &= ~SYMBOL_WRITE;
692
693 if (!sym_is_changable(sym))
694 goto next_menu;
695
696 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
697 goto next_menu;
698
699
700
701
702
703
704
705
706 if (sym_is_choice_value(sym)) {
707 struct symbol *cs;
708 struct symbol *ds;
709
710 cs = prop_get_symbol(sym_get_choice_prop(sym));
711 ds = sym_choice_default(cs);
712 if (!sym_is_optional(cs) && sym == ds) {
713 if ((sym->type == S_BOOLEAN) &&
714 sym_get_tristate_value(sym) == yes)
715 goto next_menu;
716 }
717 }
718 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
719 }
720next_menu:
721 if (menu->list != NULL) {
722 menu = menu->list;
723 }
724 else if (menu->next != NULL) {
725 menu = menu->next;
726 } else {
727 while ((menu = menu->parent)) {
728 if (menu->next != NULL) {
729 menu = menu->next;
730 break;
731 }
732 }
733 }
734 }
735 fclose(out);
736 return 0;
737}
738
739int conf_write(const char *name)
740{
741 FILE *out;
742 struct symbol *sym;
743 struct menu *menu;
744 const char *basename;
745 const char *str;
746 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
747 char *env;
748
749 dirname[0] = 0;
750 if (name && name[0]) {
751 struct stat st;
752 char *slash;
753
754 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
755 strcpy(dirname, name);
756 strcat(dirname, "/");
757 basename = conf_get_configname();
758 } else if ((slash = strrchr(name, '/'))) {
759 int size = slash - name + 1;
760 memcpy(dirname, name, size);
761 dirname[size] = 0;
762 if (slash[1])
763 basename = slash + 1;
764 else
765 basename = conf_get_configname();
766 } else
767 basename = name;
768 } else
769 basename = conf_get_configname();
770
771 sprintf(newname, "%s%s", dirname, basename);
772 env = getenv("KCONFIG_OVERWRITECONFIG");
773 if (!env || !*env) {
774 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
775 out = fopen(tmpname, "w");
776 } else {
777 *tmpname = 0;
778 out = fopen(newname, "w");
779 }
780 if (!out)
781 return 1;
782
783 conf_write_heading(out, &kconfig_printer_cb, NULL);
784
785 if (!conf_get_changed())
786 sym_clear_all_valid();
787
788 menu = rootmenu.list;
789 while (menu) {
790 sym = menu->sym;
791 if (!sym) {
792 if (!menu_is_visible(menu))
793 goto next;
794 str = menu_get_prompt(menu);
795 fprintf(out, "\n"
796 "#\n"
797 "# %s\n"
798 "#\n", str);
799 } else if (!(sym->flags & SYMBOL_CHOICE)) {
800 sym_calc_value(sym);
801 if (!(sym->flags & SYMBOL_WRITE))
802 goto next;
803 sym->flags &= ~SYMBOL_WRITE;
804
805 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
806 }
807
808next:
809 if (menu->list) {
810 menu = menu->list;
811 continue;
812 }
813 if (menu->next)
814 menu = menu->next;
815 else while ((menu = menu->parent)) {
816 if (menu->next) {
817 menu = menu->next;
818 break;
819 }
820 }
821 }
822 fclose(out);
823
824 if (*tmpname) {
825 strcat(dirname, basename);
826 strcat(dirname, ".old");
827 rename(newname, dirname);
828 if (rename(tmpname, newname))
829 return 1;
830 }
831
832 conf_message(_("configuration written to %s"), newname);
833
834 sym_set_change_count(0);
835
836 return 0;
837}
838
839static int conf_split_config(void)
840{
841 const char *name;
842 char path[PATH_MAX+1];
843 char *s, *d, c;
844 struct symbol *sym;
845 struct stat sb;
846 int res, i, fd;
847
848 name = conf_get_autoconfig_name();
849 conf_read_simple(name, S_DEF_AUTO);
850
851 if (chdir("include/config"))
852 return 1;
853
854 res = 0;
855 for_all_symbols(i, sym) {
856 sym_calc_value(sym);
857 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
858 continue;
859 if (sym->flags & SYMBOL_WRITE) {
860 if (sym->flags & SYMBOL_DEF_AUTO) {
861
862
863
864
865 switch (sym->type) {
866 case S_BOOLEAN:
867 case S_TRISTATE:
868 if (sym_get_tristate_value(sym) ==
869 sym->def[S_DEF_AUTO].tri)
870 continue;
871 break;
872 case S_STRING:
873 case S_HEX:
874 case S_INT:
875 if (!strcmp(sym_get_string_value(sym),
876 sym->def[S_DEF_AUTO].val))
877 continue;
878 break;
879 default:
880 break;
881 }
882 } else {
883
884
885
886
887 switch (sym->type) {
888 case S_BOOLEAN:
889 case S_TRISTATE:
890 if (sym_get_tristate_value(sym) == no)
891 continue;
892 break;
893 default:
894 break;
895 }
896 }
897 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
898
899 continue;
900
901
902
903
904
905
906
907 s = sym->name;
908 d = path;
909 while ((c = *s++)) {
910 c = tolower(c);
911 *d++ = (c == '_') ? '/' : c;
912 }
913 strcpy(d, ".h");
914
915
916 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
917 if (fd == -1) {
918 if (errno != ENOENT) {
919 res = 1;
920 break;
921 }
922
923
924
925
926 d = path;
927 while ((d = strchr(d, '/'))) {
928 *d = 0;
929 if (stat(path, &sb) && mkdir(path, 0755)) {
930 res = 1;
931 goto out;
932 }
933 *d++ = '/';
934 }
935
936 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
937 if (fd == -1) {
938 res = 1;
939 break;
940 }
941 }
942 close(fd);
943 }
944out:
945 if (chdir("../.."))
946 return 1;
947
948 return res;
949}
950
951int conf_write_autoconf(void)
952{
953 struct symbol *sym;
954 const char *name;
955 FILE *out, *tristate, *out_h;
956 int i;
957
958 sym_clear_all_valid();
959
960 file_write_dep("include/config/auto.conf.cmd");
961
962 if (conf_split_config())
963 return 1;
964
965 out = fopen(".tmpconfig", "w");
966 if (!out)
967 return 1;
968
969 tristate = fopen(".tmpconfig_tristate", "w");
970 if (!tristate) {
971 fclose(out);
972 return 1;
973 }
974
975 out_h = fopen(".tmpconfig.h", "w");
976 if (!out_h) {
977 fclose(out);
978 fclose(tristate);
979 return 1;
980 }
981
982 conf_write_heading(out, &kconfig_printer_cb, NULL);
983
984 conf_write_heading(tristate, &tristate_printer_cb, NULL);
985
986 conf_write_heading(out_h, &header_printer_cb, NULL);
987
988 for_all_symbols(i, sym) {
989 sym_calc_value(sym);
990 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
991 continue;
992
993
994 conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
995
996 conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);
997
998 conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
999 }
1000 fclose(out);
1001 fclose(tristate);
1002 fclose(out_h);
1003
1004 name = getenv("KCONFIG_AUTOHEADER");
1005 if (!name)
1006 name = "include/generated/autoconf.h";
1007 if (rename(".tmpconfig.h", name))
1008 return 1;
1009 name = getenv("KCONFIG_TRISTATE");
1010 if (!name)
1011 name = "include/config/tristate.conf";
1012 if (rename(".tmpconfig_tristate", name))
1013 return 1;
1014 name = conf_get_autoconfig_name();
1015
1016
1017
1018
1019 if (rename(".tmpconfig", name))
1020 return 1;
1021
1022 return 0;
1023}
1024
1025static int sym_change_count;
1026static void (*conf_changed_callback)(void);
1027
1028void sym_set_change_count(int count)
1029{
1030 int _sym_change_count = sym_change_count;
1031 sym_change_count = count;
1032 if (conf_changed_callback &&
1033 (bool)_sym_change_count != (bool)count)
1034 conf_changed_callback();
1035}
1036
1037void sym_add_change_count(int count)
1038{
1039 sym_set_change_count(count + sym_change_count);
1040}
1041
1042bool conf_get_changed(void)
1043{
1044 return sym_change_count;
1045}
1046
1047void conf_set_changed_callback(void (*fn)(void))
1048{
1049 conf_changed_callback = fn;
1050}
1051
1052static bool randomize_choice_values(struct symbol *csym)
1053{
1054 struct property *prop;
1055 struct symbol *sym;
1056 struct expr *e;
1057 int cnt, def;
1058
1059
1060
1061
1062
1063
1064 if (csym->curr.tri != yes)
1065 return false;
1066
1067 prop = sym_get_choice_prop(csym);
1068
1069
1070 cnt = 0;
1071 expr_list_for_each_sym(prop->expr, e, sym)
1072 cnt++;
1073
1074
1075
1076
1077
1078 def = (rand() % cnt);
1079
1080 cnt = 0;
1081 expr_list_for_each_sym(prop->expr, e, sym) {
1082 if (def == cnt++) {
1083 sym->def[S_DEF_USER].tri = yes;
1084 csym->def[S_DEF_USER].val = sym;
1085 }
1086 else {
1087 sym->def[S_DEF_USER].tri = no;
1088 }
1089 sym->flags |= SYMBOL_DEF_USER;
1090
1091 sym->flags &= ~SYMBOL_VALID;
1092 }
1093 csym->flags |= SYMBOL_DEF_USER;
1094
1095 csym->flags &= ~(SYMBOL_VALID);
1096
1097 return true;
1098}
1099
1100void set_all_choice_values(struct symbol *csym)
1101{
1102 struct property *prop;
1103 struct symbol *sym;
1104 struct expr *e;
1105
1106 prop = sym_get_choice_prop(csym);
1107
1108
1109
1110
1111 expr_list_for_each_sym(prop->expr, e, sym) {
1112 if (!sym_has_value(sym))
1113 sym->def[S_DEF_USER].tri = no;
1114 }
1115 csym->flags |= SYMBOL_DEF_USER;
1116
1117 csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES);
1118}
1119
1120bool conf_set_all_new_symbols(enum conf_def_mode mode)
1121{
1122 struct symbol *sym, *csym;
1123 int i, cnt, pby, pty, ptm;
1124
1125
1126
1127
1128 pby = 50; pty = ptm = 33;
1129
1130
1131 if (mode == def_random) {
1132 int n, p[3];
1133 char *env = getenv("KCONFIG_PROBABILITY");
1134 n = 0;
1135 while( env && *env ) {
1136 char *endp;
1137 int tmp = strtol( env, &endp, 10 );
1138 if( tmp >= 0 && tmp <= 100 ) {
1139 p[n++] = tmp;
1140 } else {
1141 errno = ERANGE;
1142 perror( "KCONFIG_PROBABILITY" );
1143 exit( 1 );
1144 }
1145 env = (*endp == ':') ? endp+1 : endp;
1146 if( n >=3 ) {
1147 break;
1148 }
1149 }
1150 switch( n ) {
1151 case 1:
1152 pby = p[0]; ptm = pby/2; pty = pby-ptm;
1153 break;
1154 case 2:
1155 pty = p[0]; ptm = p[1]; pby = pty + ptm;
1156 break;
1157 case 3:
1158 pby = p[0]; pty = p[1]; ptm = p[2];
1159 break;
1160 }
1161
1162 if( pty+ptm > 100 ) {
1163 errno = ERANGE;
1164 perror( "KCONFIG_PROBABILITY" );
1165 exit( 1 );
1166 }
1167 }
1168 bool has_changed = false;
1169
1170 for_all_symbols(i, sym) {
1171 if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID))
1172 continue;
1173 switch (sym_get_type(sym)) {
1174 case S_BOOLEAN:
1175 case S_TRISTATE:
1176 has_changed = true;
1177 switch (mode) {
1178 case def_yes:
1179 sym->def[S_DEF_USER].tri = yes;
1180 break;
1181 case def_mod:
1182 sym->def[S_DEF_USER].tri = mod;
1183 break;
1184 case def_no:
1185 if (sym->flags & SYMBOL_ALLNOCONFIG_Y)
1186 sym->def[S_DEF_USER].tri = yes;
1187 else
1188 sym->def[S_DEF_USER].tri = no;
1189 break;
1190 case def_random:
1191 sym->def[S_DEF_USER].tri = no;
1192 cnt = rand() % 100;
1193 if (sym->type == S_TRISTATE) {
1194 if (cnt < pty)
1195 sym->def[S_DEF_USER].tri = yes;
1196 else if (cnt < (pty+ptm))
1197 sym->def[S_DEF_USER].tri = mod;
1198 } else if (cnt < pby)
1199 sym->def[S_DEF_USER].tri = yes;
1200 break;
1201 default:
1202 continue;
1203 }
1204 if (!(sym_is_choice(sym) && mode == def_random))
1205 sym->flags |= SYMBOL_DEF_USER;
1206 break;
1207 default:
1208 break;
1209 }
1210
1211 }
1212
1213 sym_clear_all_valid();
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224 if (mode != def_random) {
1225 for_all_symbols(i, csym) {
1226 if ((sym_is_choice(csym) && !sym_has_value(csym)) ||
1227 sym_is_choice_value(csym))
1228 csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES;
1229 }
1230 }
1231
1232 for_all_symbols(i, csym) {
1233 if (sym_has_value(csym) || !sym_is_choice(csym))
1234 continue;
1235
1236 sym_calc_value(csym);
1237 if (mode == def_random)
1238 has_changed = randomize_choice_values(csym);
1239 else {
1240 set_all_choice_values(csym);
1241 has_changed = true;
1242 }
1243 }
1244
1245 return has_changed;
1246}
1247
