1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
4 */
5
6 #include <ctype.h>
7 #include <limits.h>
8 #include <stdio.h>
9 #include <stdlib.h>
10 #include <string.h>
11 #include <time.h>
12 #include <unistd.h>
13 #include <getopt.h>
14 #include <sys/time.h>
15 #include <errno.h>
16
17 #include "internal.h"
18 #include "lkc.h"
19
20 static void conf(struct menu *menu);
21 static void check_conf(struct menu *menu);
22
23 enum input_mode {
24 oldaskconfig,
25 syncconfig,
26 oldconfig,
27 allnoconfig,
28 allyesconfig,
29 allmodconfig,
30 alldefconfig,
31 randconfig,
32 defconfig,
33 savedefconfig,
34 listnewconfig,
35 helpnewconfig,
36 olddefconfig,
37 yes2modconfig,
38 mod2yesconfig,
39 mod2noconfig,
40 };
41 static enum input_mode input_mode = oldaskconfig;
42 static int input_mode_opt;
43 static int indent = 1;
44 static int tty_stdio;
45 static int sync_kconfig;
46 static int conf_cnt;
47 static char line[PATH_MAX];
48 static struct menu *rootEntry;
49
print_help(struct menu * menu)50 static void print_help(struct menu *menu)
51 {
52 struct gstr help = str_new();
53
54 menu_get_ext_help(menu, &help);
55
56 printf("\n%s\n", str_get(&help));
57 str_free(&help);
58 }
59
strip(char * str)60 static void strip(char *str)
61 {
62 char *p = str;
63 int l;
64
65 while ((isspace(*p)))
66 p++;
67 l = strlen(p);
68 if (p != str)
69 memmove(str, p, l + 1);
70 if (!l)
71 return;
72 p = str + l - 1;
73 while ((isspace(*p)))
74 *p-- = 0;
75 }
76
77 /* Helper function to facilitate fgets() by Jean Sacren. */
xfgets(char * str,int size,FILE * in)78 static void xfgets(char *str, int size, FILE *in)
79 {
80 if (!fgets(str, size, in))
81 fprintf(stderr, "\nError in reading or end of file.\n");
82
83 if (!tty_stdio)
84 printf("%s", str);
85 }
86
set_randconfig_seed(void)87 static void set_randconfig_seed(void)
88 {
89 unsigned int seed;
90 char *env;
91 bool seed_set = false;
92
93 env = getenv("KCONFIG_SEED");
94 if (env && *env) {
95 char *endp;
96
97 seed = strtol(env, &endp, 0);
98 if (*endp == '\0')
99 seed_set = true;
100 }
101
102 if (!seed_set) {
103 struct timeval now;
104
105 /*
106 * Use microseconds derived seed, compensate for systems where it may
107 * be zero.
108 */
109 gettimeofday(&now, NULL);
110 seed = (now.tv_sec + 1) * (now.tv_usec + 1);
111 }
112
113 printf("KCONFIG_SEED=0x%X\n", seed);
114 srand(seed);
115 }
116
randomize_choice_values(struct symbol * csym)117 static bool randomize_choice_values(struct symbol *csym)
118 {
119 struct property *prop;
120 struct symbol *sym;
121 struct expr *e;
122 int cnt, def;
123
124 /*
125 * If choice is mod then we may have more items selected
126 * and if no then no-one.
127 * In both cases stop.
128 */
129 if (csym->curr.tri != yes)
130 return false;
131
132 prop = sym_get_choice_prop(csym);
133
134 /* count entries in choice block */
135 cnt = 0;
136 expr_list_for_each_sym(prop->expr, e, sym)
137 cnt++;
138
139 /*
140 * find a random value and set it to yes,
141 * set the rest to no so we have only one set
142 */
143 def = rand() % cnt;
144
145 cnt = 0;
146 expr_list_for_each_sym(prop->expr, e, sym) {
147 if (def == cnt++) {
148 sym->def[S_DEF_USER].tri = yes;
149 csym->def[S_DEF_USER].val = sym;
150 } else {
151 sym->def[S_DEF_USER].tri = no;
152 }
153 sym->flags |= SYMBOL_DEF_USER;
154 /* clear VALID to get value calculated */
155 sym->flags &= ~SYMBOL_VALID;
156 }
157 csym->flags |= SYMBOL_DEF_USER;
158 /* clear VALID to get value calculated */
159 csym->flags &= ~SYMBOL_VALID;
160
161 return true;
162 }
163
164 enum conf_def_mode {
165 def_default,
166 def_yes,
167 def_mod,
168 def_no,
169 def_random
170 };
171
conf_set_all_new_symbols(enum conf_def_mode mode)172 static bool conf_set_all_new_symbols(enum conf_def_mode mode)
173 {
174 struct symbol *sym, *csym;
175 int cnt;
176 /*
177 * can't go as the default in switch-case below, otherwise gcc whines
178 * about -Wmaybe-uninitialized
179 */
180 int pby = 50; /* probability of bool = y */
181 int pty = 33; /* probability of tristate = y */
182 int ptm = 33; /* probability of tristate = m */
183 bool has_changed = false;
184
185 if (mode == def_random) {
186 int n, p[3];
187 char *env = getenv("KCONFIG_PROBABILITY");
188
189 n = 0;
190 while (env && *env) {
191 char *endp;
192 int tmp = strtol(env, &endp, 10);
193
194 if (tmp >= 0 && tmp <= 100) {
195 p[n++] = tmp;
196 } else {
197 errno = ERANGE;
198 perror("KCONFIG_PROBABILITY");
199 exit(1);
200 }
201 env = (*endp == ':') ? endp + 1 : endp;
202 if (n >= 3)
203 break;
204 }
205 switch (n) {
206 case 1:
207 pby = p[0];
208 ptm = pby / 2;
209 pty = pby - ptm;
210 break;
211 case 2:
212 pty = p[0];
213 ptm = p[1];
214 pby = pty + ptm;
215 break;
216 case 3:
217 pby = p[0];
218 pty = p[1];
219 ptm = p[2];
220 break;
221 }
222
223 if (pty + ptm > 100) {
224 errno = ERANGE;
225 perror("KCONFIG_PROBABILITY");
226 exit(1);
227 }
228 }
229
230 for_all_symbols(sym) {
231 if (sym_has_value(sym) || sym->flags & SYMBOL_VALID)
232 continue;
233 switch (sym_get_type(sym)) {
234 case S_BOOLEAN:
235 case S_TRISTATE:
236 has_changed = true;
237 switch (mode) {
238 case def_yes:
239 sym->def[S_DEF_USER].tri = yes;
240 break;
241 case def_mod:
242 sym->def[S_DEF_USER].tri = mod;
243 break;
244 case def_no:
245 sym->def[S_DEF_USER].tri = no;
246 break;
247 case def_random:
248 sym->def[S_DEF_USER].tri = no;
249 cnt = rand() % 100;
250 if (sym->type == S_TRISTATE) {
251 if (cnt < pty)
252 sym->def[S_DEF_USER].tri = yes;
253 else if (cnt < pty + ptm)
254 sym->def[S_DEF_USER].tri = mod;
255 } else if (cnt < pby)
256 sym->def[S_DEF_USER].tri = yes;
257 break;
258 default:
259 continue;
260 }
261 if (!(sym_is_choice(sym) && mode == def_random))
262 sym->flags |= SYMBOL_DEF_USER;
263 break;
264 default:
265 break;
266 }
267
268 }
269
270 sym_clear_all_valid();
271
272 /*
273 * We have different type of choice blocks.
274 * If curr.tri equals to mod then we can select several
275 * choice symbols in one block.
276 * In this case we do nothing.
277 * If curr.tri equals yes then only one symbol can be
278 * selected in a choice block and we set it to yes,
279 * and the rest to no.
280 */
281 if (mode != def_random) {
282 for_all_symbols(csym) {
283 if ((sym_is_choice(csym) && !sym_has_value(csym)) ||
284 sym_is_choice_value(csym))
285 csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES;
286 }
287 }
288
289 for_all_symbols(csym) {
290 if (sym_has_value(csym) || !sym_is_choice(csym))
291 continue;
292
293 sym_calc_value(csym);
294 if (mode == def_random)
295 has_changed |= randomize_choice_values(csym);
296 else {
297 set_all_choice_values(csym);
298 has_changed = true;
299 }
300 }
301
302 return has_changed;
303 }
304
conf_rewrite_tristates(tristate old_val,tristate new_val)305 static void conf_rewrite_tristates(tristate old_val, tristate new_val)
306 {
307 struct symbol *sym;
308
309 for_all_symbols(sym) {
310 if (sym_get_type(sym) == S_TRISTATE &&
311 sym->def[S_DEF_USER].tri == old_val)
312 sym->def[S_DEF_USER].tri = new_val;
313 }
314 sym_clear_all_valid();
315 }
316
conf_askvalue(struct symbol * sym,const char * def)317 static int conf_askvalue(struct symbol *sym, const char *def)
318 {
319 if (!sym_has_value(sym))
320 printf("(NEW) ");
321
322 line[0] = '\n';
323 line[1] = 0;
324
325 if (!sym_is_changeable(sym)) {
326 printf("%s\n", def);
327 line[0] = '\n';
328 line[1] = 0;
329 return 0;
330 }
331
332 switch (input_mode) {
333 case oldconfig:
334 case syncconfig:
335 if (sym_has_value(sym)) {
336 printf("%s\n", def);
337 return 0;
338 }
339 /* fall through */
340 default:
341 fflush(stdout);
342 xfgets(line, sizeof(line), stdin);
343 break;
344 }
345
346 return 1;
347 }
348
conf_string(struct menu * menu)349 static int conf_string(struct menu *menu)
350 {
351 struct symbol *sym = menu->sym;
352 const char *def;
353
354 while (1) {
355 printf("%*s%s ", indent - 1, "", menu->prompt->text);
356 printf("(%s) ", sym->name);
357 def = sym_get_string_value(sym);
358 if (def)
359 printf("[%s] ", def);
360 if (!conf_askvalue(sym, def))
361 return 0;
362 switch (line[0]) {
363 case '\n':
364 break;
365 case '?':
366 /* print help */
367 if (line[1] == '\n') {
368 print_help(menu);
369 def = NULL;
370 break;
371 }
372 /* fall through */
373 default:
374 line[strlen(line)-1] = 0;
375 def = line;
376 }
377 if (def && sym_set_string_value(sym, def))
378 return 0;
379 }
380 }
381
conf_sym(struct menu * menu)382 static int conf_sym(struct menu *menu)
383 {
384 struct symbol *sym = menu->sym;
385 tristate oldval, newval;
386
387 while (1) {
388 printf("%*s%s ", indent - 1, "", menu->prompt->text);
389 if (sym->name)
390 printf("(%s) ", sym->name);
391 putchar('[');
392 oldval = sym_get_tristate_value(sym);
393 switch (oldval) {
394 case no:
395 putchar('N');
396 break;
397 case mod:
398 putchar('M');
399 break;
400 case yes:
401 putchar('Y');
402 break;
403 }
404 if (oldval != no && sym_tristate_within_range(sym, no))
405 printf("/n");
406 if (oldval != mod && sym_tristate_within_range(sym, mod))
407 printf("/m");
408 if (oldval != yes && sym_tristate_within_range(sym, yes))
409 printf("/y");
410 printf("/?] ");
411 if (!conf_askvalue(sym, sym_get_string_value(sym)))
412 return 0;
413 strip(line);
414
415 switch (line[0]) {
416 case 'n':
417 case 'N':
418 newval = no;
419 if (!line[1] || !strcmp(&line[1], "o"))
420 break;
421 continue;
422 case 'm':
423 case 'M':
424 newval = mod;
425 if (!line[1])
426 break;
427 continue;
428 case 'y':
429 case 'Y':
430 newval = yes;
431 if (!line[1] || !strcmp(&line[1], "es"))
432 break;
433 continue;
434 case 0:
435 newval = oldval;
436 break;
437 case '?':
438 goto help;
439 default:
440 continue;
441 }
442 if (sym_set_tristate_value(sym, newval))
443 return 0;
444 help:
445 print_help(menu);
446 }
447 }
448
conf_choice(struct menu * menu)449 static void conf_choice(struct menu *menu)
450 {
451 struct symbol *sym, *def_sym;
452 struct menu *child;
453 bool is_new;
454
455 sym = menu->sym;
456 is_new = !sym_has_value(sym);
457 if (sym_is_changeable(sym)) {
458 conf_sym(menu);
459 sym_calc_value(sym);
460 switch (sym_get_tristate_value(sym)) {
461 case no:
462 case mod:
463 return;
464 case yes:
465 break;
466 }
467 } else {
468 switch (sym_get_tristate_value(sym)) {
469 case no:
470 return;
471 case mod:
472 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
473 return;
474 case yes:
475 break;
476 }
477 }
478
479 while (1) {
480 int cnt, def;
481
482 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
483 def_sym = sym_get_choice_value(sym);
484 cnt = def = 0;
485 line[0] = 0;
486 for (child = menu->list; child; child = child->next) {
487 if (!menu_is_visible(child))
488 continue;
489 if (!child->sym) {
490 printf("%*c %s\n", indent, '*', menu_get_prompt(child));
491 continue;
492 }
493 cnt++;
494 if (child->sym == def_sym) {
495 def = cnt;
496 printf("%*c", indent, '>');
497 } else
498 printf("%*c", indent, ' ');
499 printf(" %d. %s (%s)", cnt, menu_get_prompt(child),
500 child->sym->name);
501 if (!sym_has_value(child->sym))
502 printf(" (NEW)");
503 printf("\n");
504 }
505 printf("%*schoice", indent - 1, "");
506 if (cnt == 1) {
507 printf("[1]: 1\n");
508 goto conf_childs;
509 }
510 printf("[1-%d?]: ", cnt);
511 switch (input_mode) {
512 case oldconfig:
513 case syncconfig:
514 if (!is_new) {
515 cnt = def;
516 printf("%d\n", cnt);
517 break;
518 }
519 /* fall through */
520 case oldaskconfig:
521 fflush(stdout);
522 xfgets(line, sizeof(line), stdin);
523 strip(line);
524 if (line[0] == '?') {
525 print_help(menu);
526 continue;
527 }
528 if (!line[0])
529 cnt = def;
530 else if (isdigit(line[0]))
531 cnt = atoi(line);
532 else
533 continue;
534 break;
535 default:
536 break;
537 }
538
539 conf_childs:
540 for (child = menu->list; child; child = child->next) {
541 if (!child->sym || !menu_is_visible(child))
542 continue;
543 if (!--cnt)
544 break;
545 }
546 if (!child)
547 continue;
548 if (line[0] && line[strlen(line) - 1] == '?') {
549 print_help(child);
550 continue;
551 }
552 sym_set_tristate_value(child->sym, yes);
553 return;
554 }
555 }
556
conf(struct menu * menu)557 static void conf(struct menu *menu)
558 {
559 struct symbol *sym;
560 struct property *prop;
561 struct menu *child;
562
563 if (!menu_is_visible(menu))
564 return;
565
566 sym = menu->sym;
567 prop = menu->prompt;
568 if (prop) {
569 const char *prompt;
570
571 switch (prop->type) {
572 case P_MENU:
573 /*
574 * Except in oldaskconfig mode, we show only menus that
575 * contain new symbols.
576 */
577 if (input_mode != oldaskconfig && rootEntry != menu) {
578 check_conf(menu);
579 return;
580 }
581 /* fall through */
582 case P_COMMENT:
583 prompt = menu_get_prompt(menu);
584 if (prompt)
585 printf("%*c\n%*c %s\n%*c\n",
586 indent, '*',
587 indent, '*', prompt,
588 indent, '*');
589 default:
590 ;
591 }
592 }
593
594 if (!sym)
595 goto conf_childs;
596
597 if (sym_is_choice(sym)) {
598 conf_choice(menu);
599 if (sym->curr.tri != mod)
600 return;
601 goto conf_childs;
602 }
603
604 switch (sym->type) {
605 case S_INT:
606 case S_HEX:
607 case S_STRING:
608 conf_string(menu);
609 break;
610 default:
611 conf_sym(menu);
612 break;
613 }
614
615 conf_childs:
616 if (sym)
617 indent += 2;
618 for (child = menu->list; child; child = child->next)
619 conf(child);
620 if (sym)
621 indent -= 2;
622 }
623
check_conf(struct menu * menu)624 static void check_conf(struct menu *menu)
625 {
626 struct symbol *sym;
627 struct menu *child;
628
629 if (!menu_is_visible(menu))
630 return;
631
632 sym = menu->sym;
633 if (sym && !sym_has_value(sym) &&
634 (sym_is_changeable(sym) ||
635 (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes))) {
636
637 switch (input_mode) {
638 case listnewconfig:
639 if (sym->name)
640 print_symbol_for_listconfig(sym);
641 break;
642 case helpnewconfig:
643 printf("-----\n");
644 print_help(menu);
645 printf("-----\n");
646 break;
647 default:
648 if (!conf_cnt++)
649 printf("*\n* Restart config...\n*\n");
650 rootEntry = menu_get_parent_menu(menu);
651 conf(rootEntry);
652 break;
653 }
654 }
655
656 for (child = menu->list; child; child = child->next)
657 check_conf(child);
658 }
659
660 static const struct option long_opts[] = {
661 {"help", no_argument, NULL, 'h'},
662 {"silent", no_argument, NULL, 's'},
663 {"oldaskconfig", no_argument, &input_mode_opt, oldaskconfig},
664 {"oldconfig", no_argument, &input_mode_opt, oldconfig},
665 {"syncconfig", no_argument, &input_mode_opt, syncconfig},
666 {"defconfig", required_argument, &input_mode_opt, defconfig},
667 {"savedefconfig", required_argument, &input_mode_opt, savedefconfig},
668 {"allnoconfig", no_argument, &input_mode_opt, allnoconfig},
669 {"allyesconfig", no_argument, &input_mode_opt, allyesconfig},
670 {"allmodconfig", no_argument, &input_mode_opt, allmodconfig},
671 {"alldefconfig", no_argument, &input_mode_opt, alldefconfig},
672 {"randconfig", no_argument, &input_mode_opt, randconfig},
673 {"listnewconfig", no_argument, &input_mode_opt, listnewconfig},
674 {"helpnewconfig", no_argument, &input_mode_opt, helpnewconfig},
675 {"olddefconfig", no_argument, &input_mode_opt, olddefconfig},
676 {"yes2modconfig", no_argument, &input_mode_opt, yes2modconfig},
677 {"mod2yesconfig", no_argument, &input_mode_opt, mod2yesconfig},
678 {"mod2noconfig", no_argument, &input_mode_opt, mod2noconfig},
679 {NULL, 0, NULL, 0}
680 };
681
conf_usage(const char * progname)682 static void conf_usage(const char *progname)
683 {
684 printf("Usage: %s [options] <kconfig-file>\n", progname);
685 printf("\n");
686 printf("Generic options:\n");
687 printf(" -h, --help Print this message and exit.\n");
688 printf(" -s, --silent Do not print log.\n");
689 printf("\n");
690 printf("Mode options:\n");
691 printf(" --listnewconfig List new options\n");
692 printf(" --helpnewconfig List new options and help text\n");
693 printf(" --oldaskconfig Start a new configuration using a line-oriented program\n");
694 printf(" --oldconfig Update a configuration using a provided .config as base\n");
695 printf(" --syncconfig Similar to oldconfig but generates configuration in\n"
696 " include/{generated/,config/}\n");
697 printf(" --olddefconfig Same as oldconfig but sets new symbols to their default value\n");
698 printf(" --defconfig <file> New config with default defined in <file>\n");
699 printf(" --savedefconfig <file> Save the minimal current configuration to <file>\n");
700 printf(" --allnoconfig New config where all options are answered with no\n");
701 printf(" --allyesconfig New config where all options are answered with yes\n");
702 printf(" --allmodconfig New config where all options are answered with mod\n");
703 printf(" --alldefconfig New config with all symbols set to default\n");
704 printf(" --randconfig New config with random answer to all options\n");
705 printf(" --yes2modconfig Change answers from yes to mod if possible\n");
706 printf(" --mod2yesconfig Change answers from mod to yes if possible\n");
707 printf(" --mod2noconfig Change answers from mod to no if possible\n");
708 printf(" (If none of the above is given, --oldaskconfig is the default)\n");
709 }
710
main(int ac,char ** av)711 int main(int ac, char **av)
712 {
713 const char *progname = av[0];
714 int opt;
715 const char *name, *defconfig_file = NULL /* gcc uninit */;
716 int no_conf_write = 0;
717
718 tty_stdio = isatty(0) && isatty(1);
719
720 while ((opt = getopt_long(ac, av, "hs", long_opts, NULL)) != -1) {
721 switch (opt) {
722 case 'h':
723 conf_usage(progname);
724 exit(1);
725 break;
726 case 's':
727 conf_set_message_callback(NULL);
728 break;
729 case 0:
730 input_mode = input_mode_opt;
731 switch (input_mode) {
732 case syncconfig:
733 /*
734 * syncconfig is invoked during the build stage.
735 * Suppress distracting
736 * "configuration written to ..."
737 */
738 conf_set_message_callback(NULL);
739 sync_kconfig = 1;
740 break;
741 case defconfig:
742 case savedefconfig:
743 defconfig_file = optarg;
744 break;
745 case randconfig:
746 set_randconfig_seed();
747 break;
748 default:
749 break;
750 }
751 default:
752 break;
753 }
754 }
755 if (ac == optind) {
756 fprintf(stderr, "%s: Kconfig file missing\n", av[0]);
757 conf_usage(progname);
758 exit(1);
759 }
760 conf_parse(av[optind]);
761 //zconfdump(stdout);
762
763 switch (input_mode) {
764 case defconfig:
765 if (conf_read(defconfig_file)) {
766 fprintf(stderr,
767 "***\n"
768 "*** Can't find default configuration \"%s\"!\n"
769 "***\n",
770 defconfig_file);
771 exit(1);
772 }
773 break;
774 case savedefconfig:
775 case syncconfig:
776 case oldaskconfig:
777 case oldconfig:
778 case listnewconfig:
779 case helpnewconfig:
780 case olddefconfig:
781 case yes2modconfig:
782 case mod2yesconfig:
783 case mod2noconfig:
784 conf_read(NULL);
785 break;
786 case allnoconfig:
787 case allyesconfig:
788 case allmodconfig:
789 case alldefconfig:
790 case randconfig:
791 name = getenv("KCONFIG_ALLCONFIG");
792 if (!name)
793 break;
794 if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) {
795 if (conf_read_simple(name, S_DEF_USER)) {
796 fprintf(stderr,
797 "*** Can't read seed configuration \"%s\"!\n",
798 name);
799 exit(1);
800 }
801 break;
802 }
803 switch (input_mode) {
804 case allnoconfig: name = "allno.config"; break;
805 case allyesconfig: name = "allyes.config"; break;
806 case allmodconfig: name = "allmod.config"; break;
807 case alldefconfig: name = "alldef.config"; break;
808 case randconfig: name = "allrandom.config"; break;
809 default: break;
810 }
811 if (conf_read_simple(name, S_DEF_USER) &&
812 conf_read_simple("all.config", S_DEF_USER)) {
813 fprintf(stderr,
814 "*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n",
815 name);
816 exit(1);
817 }
818 break;
819 default:
820 break;
821 }
822
823 if (conf_errors())
824 exit(1);
825
826 if (sync_kconfig) {
827 name = getenv("KCONFIG_NOSILENTUPDATE");
828 if (name && *name) {
829 if (conf_get_changed()) {
830 fprintf(stderr,
831 "\n*** The configuration requires explicit update.\n\n");
832 return 1;
833 }
834 no_conf_write = 1;
835 }
836 }
837
838 switch (input_mode) {
839 case allnoconfig:
840 conf_set_all_new_symbols(def_no);
841 break;
842 case allyesconfig:
843 conf_set_all_new_symbols(def_yes);
844 break;
845 case allmodconfig:
846 conf_set_all_new_symbols(def_mod);
847 break;
848 case alldefconfig:
849 conf_set_all_new_symbols(def_default);
850 break;
851 case randconfig:
852 /* Really nothing to do in this loop */
853 while (conf_set_all_new_symbols(def_random)) ;
854 break;
855 case defconfig:
856 conf_set_all_new_symbols(def_default);
857 break;
858 case savedefconfig:
859 break;
860 case yes2modconfig:
861 conf_rewrite_tristates(yes, mod);
862 break;
863 case mod2yesconfig:
864 conf_rewrite_tristates(mod, yes);
865 break;
866 case mod2noconfig:
867 conf_rewrite_tristates(mod, no);
868 break;
869 case oldaskconfig:
870 rootEntry = &rootmenu;
871 conf(&rootmenu);
872 input_mode = oldconfig;
873 /* fall through */
874 case oldconfig:
875 case listnewconfig:
876 case helpnewconfig:
877 case syncconfig:
878 /* Update until a loop caused no more changes */
879 do {
880 conf_cnt = 0;
881 check_conf(&rootmenu);
882 } while (conf_cnt);
883 break;
884 case olddefconfig:
885 default:
886 break;
887 }
888
889 if (sym_dep_errors())
890 exit(1);
891
892 if (input_mode == savedefconfig) {
893 if (conf_write_defconfig(defconfig_file)) {
894 fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n",
895 defconfig_file);
896 return 1;
897 }
898 } else if (input_mode != listnewconfig && input_mode != helpnewconfig) {
899 if (!no_conf_write && conf_write(NULL)) {
900 fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
901 exit(1);
902 }
903
904 /*
905 * Create auto.conf if it does not exist.
906 * This prevents GNU Make 4.1 or older from emitting
907 * "include/config/auto.conf: No such file or directory"
908 * in the top-level Makefile
909 *
910 * syncconfig always creates or updates auto.conf because it is
911 * used during the build.
912 */
913 if (conf_write_autoconf(sync_kconfig) && sync_kconfig) {
914 fprintf(stderr,
915 "\n*** Error during sync of the configuration.\n\n");
916 return 1;
917 }
918 }
919 return 0;
920 }
921