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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 "lkc.h"
18
19static void conf(struct menu *menu);
20static void check_conf(struct menu *menu);
21
22enum input_mode {
23 oldaskconfig,
24 syncconfig,
25 oldconfig,
26 allnoconfig,
27 allyesconfig,
28 allmodconfig,
29 alldefconfig,
30 randconfig,
31 defconfig,
32 savedefconfig,
33 listnewconfig,
34 helpnewconfig,
35 olddefconfig,
36 yes2modconfig,
37 mod2yesconfig,
38 mod2noconfig,
39};
40static enum input_mode input_mode = oldaskconfig;
41static int input_mode_opt;
42static int indent = 1;
43static int tty_stdio;
44static int sync_kconfig;
45static int conf_cnt;
46static char line[PATH_MAX];
47static struct menu *rootEntry;
48
49static void print_help(struct menu *menu)
50{
51 struct gstr help = str_new();
52
53 menu_get_ext_help(menu, &help);
54
55 printf("\n%s\n", str_get(&help));
56 str_free(&help);
57}
58
59static void strip(char *str)
60{
61 char *p = str;
62 int l;
63
64 while ((isspace(*p)))
65 p++;
66 l = strlen(p);
67 if (p != str)
68 memmove(str, p, l + 1);
69 if (!l)
70 return;
71 p = str + l - 1;
72 while ((isspace(*p)))
73 *p-- = 0;
74}
75
76/* Helper function to facilitate fgets() by Jean Sacren. */
77static void xfgets(char *str, int size, FILE *in)
78{
79 if (!fgets(str, size, in))
80 fprintf(stderr, "\nError in reading or end of file.\n");
81
82 if (!tty_stdio)
83 printf("%s", str);
84}
85
86static void set_randconfig_seed(void)
87{
88 unsigned int seed;
89 char *env;
90 bool seed_set = false;
91
92 env = getenv("KCONFIG_SEED");
93 if (env && *env) {
94 char *endp;
95
96 seed = strtol(env, &endp, 0);
97 if (*endp == '\0')
98 seed_set = true;
99 }
100
101 if (!seed_set) {
102 struct timeval now;
103
104 /*
105 * Use microseconds derived seed, compensate for systems where it may
106 * be zero.
107 */
108 gettimeofday(&now, NULL);
109 seed = (now.tv_sec + 1) * (now.tv_usec + 1);
110 }
111
112 printf("KCONFIG_SEED=0x%X\n", seed);
113 srand(seed);
114}
115
116static bool randomize_choice_values(struct symbol *csym)
117{
118 struct property *prop;
119 struct symbol *sym;
120 struct expr *e;
121 int cnt, def;
122
123 /*
124 * If choice is mod then we may have more items selected
125 * and if no then no-one.
126 * In both cases stop.
127 */
128 if (csym->curr.tri != yes)
129 return false;
130
131 prop = sym_get_choice_prop(csym);
132
133 /* count entries in choice block */
134 cnt = 0;
135 expr_list_for_each_sym(prop->expr, e, sym)
136 cnt++;
137
138 /*
139 * find a random value and set it to yes,
140 * set the rest to no so we have only one set
141 */
142 def = rand() % cnt;
143
144 cnt = 0;
145 expr_list_for_each_sym(prop->expr, e, sym) {
146 if (def == cnt++) {
147 sym->def[S_DEF_USER].tri = yes;
148 csym->def[S_DEF_USER].val = sym;
149 } else {
150 sym->def[S_DEF_USER].tri = no;
151 }
152 sym->flags |= SYMBOL_DEF_USER;
153 /* clear VALID to get value calculated */
154 sym->flags &= ~SYMBOL_VALID;
155 }
156 csym->flags |= SYMBOL_DEF_USER;
157 /* clear VALID to get value calculated */
158 csym->flags &= ~SYMBOL_VALID;
159
160 return true;
161}
162
163enum conf_def_mode {
164 def_default,
165 def_yes,
166 def_mod,
167 def_no,
168 def_random
169};
170
171static bool conf_set_all_new_symbols(enum conf_def_mode mode)
172{
173 struct symbol *sym, *csym;
174 int i, cnt;
175 /*
176 * can't go as the default in switch-case below, otherwise gcc whines
177 * about -Wmaybe-uninitialized
178 */
179 int pby = 50; /* probability of bool = y */
180 int pty = 33; /* probability of tristate = y */
181 int ptm = 33; /* probability of tristate = m */
182 bool has_changed = false;
183
184 if (mode == def_random) {
185 int n, p[3];
186 char *env = getenv("KCONFIG_PROBABILITY");
187
188 n = 0;
189 while (env && *env) {
190 char *endp;
191 int tmp = strtol(env, &endp, 10);
192
193 if (tmp >= 0 && tmp <= 100) {
194 p[n++] = tmp;
195 } else {
196 errno = ERANGE;
197 perror("KCONFIG_PROBABILITY");
198 exit(1);
199 }
200 env = (*endp == ':') ? endp + 1 : endp;
201 if (n >= 3)
202 break;
203 }
204 switch (n) {
205 case 1:
206 pby = p[0];
207 ptm = pby / 2;
208 pty = pby - ptm;
209 break;
210 case 2:
211 pty = p[0];
212 ptm = p[1];
213 pby = pty + ptm;
214 break;
215 case 3:
216 pby = p[0];
217 pty = p[1];
218 ptm = p[2];
219 break;
220 }
221
222 if (pty + ptm > 100) {
223 errno = ERANGE;
224 perror("KCONFIG_PROBABILITY");
225 exit(1);
226 }
227 }
228
229 for_all_symbols(i, sym) {
230 if (sym_has_value(sym) || sym->flags & SYMBOL_VALID)
231 continue;
232 switch (sym_get_type(sym)) {
233 case S_BOOLEAN:
234 case S_TRISTATE:
235 has_changed = true;
236 switch (mode) {
237 case def_yes:
238 sym->def[S_DEF_USER].tri = yes;
239 break;
240 case def_mod:
241 sym->def[S_DEF_USER].tri = mod;
242 break;
243 case def_no:
244 sym->def[S_DEF_USER].tri = no;
245 break;
246 case def_random:
247 sym->def[S_DEF_USER].tri = no;
248 cnt = rand() % 100;
249 if (sym->type == S_TRISTATE) {
250 if (cnt < pty)
251 sym->def[S_DEF_USER].tri = yes;
252 else if (cnt < pty + ptm)
253 sym->def[S_DEF_USER].tri = mod;
254 } else if (cnt < pby)
255 sym->def[S_DEF_USER].tri = yes;
256 break;
257 default:
258 continue;
259 }
260 if (!(sym_is_choice(sym) && mode == def_random))
261 sym->flags |= SYMBOL_DEF_USER;
262 break;
263 default:
264 break;
265 }
266
267 }
268
269 sym_clear_all_valid();
270
271 /*
272 * We have different type of choice blocks.
273 * If curr.tri equals to mod then we can select several
274 * choice symbols in one block.
275 * In this case we do nothing.
276 * If curr.tri equals yes then only one symbol can be
277 * selected in a choice block and we set it to yes,
278 * and the rest to no.
279 */
280 if (mode != def_random) {
281 for_all_symbols(i, csym) {
282 if ((sym_is_choice(csym) && !sym_has_value(csym)) ||
283 sym_is_choice_value(csym))
284 csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES;
285 }
286 }
287
288 for_all_symbols(i, csym) {
289 if (sym_has_value(csym) || !sym_is_choice(csym))
290 continue;
291
292 sym_calc_value(csym);
293 if (mode == def_random)
294 has_changed |= randomize_choice_values(csym);
295 else {
296 set_all_choice_values(csym);
297 has_changed = true;
298 }
299 }
300
301 return has_changed;
302}
303
304static void conf_rewrite_tristates(tristate old_val, tristate new_val)
305{
306 struct symbol *sym;
307 int i;
308
309 for_all_symbols(i, 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
317static 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
349static 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
382static 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;
444help:
445 print_help(menu);
446 }
447}
448
449static int 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 return 1;
463 case mod:
464 return 0;
465 case yes:
466 break;
467 }
468 } else {
469 switch (sym_get_tristate_value(sym)) {
470 case no:
471 return 1;
472 case mod:
473 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
474 return 0;
475 case yes:
476 break;
477 }
478 }
479
480 while (1) {
481 int cnt, def;
482
483 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
484 def_sym = sym_get_choice_value(sym);
485 cnt = def = 0;
486 line[0] = 0;
487 for (child = menu->list; child; child = child->next) {
488 if (!menu_is_visible(child))
489 continue;
490 if (!child->sym) {
491 printf("%*c %s\n", indent, '*', menu_get_prompt(child));
492 continue;
493 }
494 cnt++;
495 if (child->sym == def_sym) {
496 def = cnt;
497 printf("%*c", indent, '>');
498 } else
499 printf("%*c", indent, ' ');
500 printf(" %d. %s", cnt, menu_get_prompt(child));
501 if (child->sym->name)
502 printf(" (%s)", child->sym->name);
503 if (!sym_has_value(child->sym))
504 printf(" (NEW)");
505 printf("\n");
506 }
507 printf("%*schoice", indent - 1, "");
508 if (cnt == 1) {
509 printf("[1]: 1\n");
510 goto conf_childs;
511 }
512 printf("[1-%d?]: ", cnt);
513 switch (input_mode) {
514 case oldconfig:
515 case syncconfig:
516 if (!is_new) {
517 cnt = def;
518 printf("%d\n", cnt);
519 break;
520 }
521 /* fall through */
522 case oldaskconfig:
523 fflush(stdout);
524 xfgets(line, sizeof(line), stdin);
525 strip(line);
526 if (line[0] == '?') {
527 print_help(menu);
528 continue;
529 }
530 if (!line[0])
531 cnt = def;
532 else if (isdigit(line[0]))
533 cnt = atoi(line);
534 else
535 continue;
536 break;
537 default:
538 break;
539 }
540
541 conf_childs:
542 for (child = menu->list; child; child = child->next) {
543 if (!child->sym || !menu_is_visible(child))
544 continue;
545 if (!--cnt)
546 break;
547 }
548 if (!child)
549 continue;
550 if (line[0] && line[strlen(line) - 1] == '?') {
551 print_help(child);
552 continue;
553 }
554 sym_set_tristate_value(child->sym, yes);
555 for (child = child->list; child; child = child->next) {
556 indent += 2;
557 conf(child);
558 indent -= 2;
559 }
560 return 1;
561 }
562}
563
564static void conf(struct menu *menu)
565{
566 struct symbol *sym;
567 struct property *prop;
568 struct menu *child;
569
570 if (!menu_is_visible(menu))
571 return;
572
573 sym = menu->sym;
574 prop = menu->prompt;
575 if (prop) {
576 const char *prompt;
577
578 switch (prop->type) {
579 case P_MENU:
580 /*
581 * Except in oldaskconfig mode, we show only menus that
582 * contain new symbols.
583 */
584 if (input_mode != oldaskconfig && rootEntry != menu) {
585 check_conf(menu);
586 return;
587 }
588 /* fall through */
589 case P_COMMENT:
590 prompt = menu_get_prompt(menu);
591 if (prompt)
592 printf("%*c\n%*c %s\n%*c\n",
593 indent, '*',
594 indent, '*', prompt,
595 indent, '*');
596 default:
597 ;
598 }
599 }
600
601 if (!sym)
602 goto conf_childs;
603
604 if (sym_is_choice(sym)) {
605 conf_choice(menu);
606 if (sym->curr.tri != mod)
607 return;
608 goto conf_childs;
609 }
610
611 switch (sym->type) {
612 case S_INT:
613 case S_HEX:
614 case S_STRING:
615 conf_string(menu);
616 break;
617 default:
618 conf_sym(menu);
619 break;
620 }
621
622conf_childs:
623 if (sym)
624 indent += 2;
625 for (child = menu->list; child; child = child->next)
626 conf(child);
627 if (sym)
628 indent -= 2;
629}
630
631static void check_conf(struct menu *menu)
632{
633 struct symbol *sym;
634 struct menu *child;
635
636 if (!menu_is_visible(menu))
637 return;
638
639 sym = menu->sym;
640 if (sym && !sym_has_value(sym) &&
641 (sym_is_changeable(sym) ||
642 (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes))) {
643
644 switch (input_mode) {
645 case listnewconfig:
646 if (sym->name)
647 print_symbol_for_listconfig(sym);
648 break;
649 case helpnewconfig:
650 printf("-----\n");
651 print_help(menu);
652 printf("-----\n");
653 break;
654 default:
655 if (!conf_cnt++)
656 printf("*\n* Restart config...\n*\n");
657 rootEntry = menu_get_parent_menu(menu);
658 conf(rootEntry);
659 break;
660 }
661 }
662
663 for (child = menu->list; child; child = child->next)
664 check_conf(child);
665}
666
667static const struct option long_opts[] = {
668 {"help", no_argument, NULL, 'h'},
669 {"silent", no_argument, NULL, 's'},
670 {"oldaskconfig", no_argument, &input_mode_opt, oldaskconfig},
671 {"oldconfig", no_argument, &input_mode_opt, oldconfig},
672 {"syncconfig", no_argument, &input_mode_opt, syncconfig},
673 {"defconfig", required_argument, &input_mode_opt, defconfig},
674 {"savedefconfig", required_argument, &input_mode_opt, savedefconfig},
675 {"allnoconfig", no_argument, &input_mode_opt, allnoconfig},
676 {"allyesconfig", no_argument, &input_mode_opt, allyesconfig},
677 {"allmodconfig", no_argument, &input_mode_opt, allmodconfig},
678 {"alldefconfig", no_argument, &input_mode_opt, alldefconfig},
679 {"randconfig", no_argument, &input_mode_opt, randconfig},
680 {"listnewconfig", no_argument, &input_mode_opt, listnewconfig},
681 {"helpnewconfig", no_argument, &input_mode_opt, helpnewconfig},
682 {"olddefconfig", no_argument, &input_mode_opt, olddefconfig},
683 {"yes2modconfig", no_argument, &input_mode_opt, yes2modconfig},
684 {"mod2yesconfig", no_argument, &input_mode_opt, mod2yesconfig},
685 {"mod2noconfig", no_argument, &input_mode_opt, mod2noconfig},
686 {NULL, 0, NULL, 0}
687};
688
689static void conf_usage(const char *progname)
690{
691 printf("Usage: %s [options] <kconfig-file>\n", progname);
692 printf("\n");
693 printf("Generic options:\n");
694 printf(" -h, --help Print this message and exit.\n");
695 printf(" -s, --silent Do not print log.\n");
696 printf("\n");
697 printf("Mode options:\n");
698 printf(" --listnewconfig List new options\n");
699 printf(" --helpnewconfig List new options and help text\n");
700 printf(" --oldaskconfig Start a new configuration using a line-oriented program\n");
701 printf(" --oldconfig Update a configuration using a provided .config as base\n");
702 printf(" --syncconfig Similar to oldconfig but generates configuration in\n"
703 " include/{generated/,config/}\n");
704 printf(" --olddefconfig Same as oldconfig but sets new symbols to their default value\n");
705 printf(" --defconfig <file> New config with default defined in <file>\n");
706 printf(" --savedefconfig <file> Save the minimal current configuration to <file>\n");
707 printf(" --allnoconfig New config where all options are answered with no\n");
708 printf(" --allyesconfig New config where all options are answered with yes\n");
709 printf(" --allmodconfig New config where all options are answered with mod\n");
710 printf(" --alldefconfig New config with all symbols set to default\n");
711 printf(" --randconfig New config with random answer to all options\n");
712 printf(" --yes2modconfig Change answers from yes to mod if possible\n");
713 printf(" --mod2yesconfig Change answers from mod to yes if possible\n");
714 printf(" --mod2noconfig Change answers from mod to no if possible\n");
715 printf(" (If none of the above is given, --oldaskconfig is the default)\n");
716}
717
718int main(int ac, char **av)
719{
720 const char *progname = av[0];
721 int opt;
722 const char *name, *defconfig_file = NULL /* gcc uninit */;
723 int no_conf_write = 0;
724
725 tty_stdio = isatty(0) && isatty(1);
726
727 while ((opt = getopt_long(ac, av, "hs", long_opts, NULL)) != -1) {
728 switch (opt) {
729 case 'h':
730 conf_usage(progname);
731 exit(1);
732 break;
733 case 's':
734 conf_set_message_callback(NULL);
735 break;
736 case 0:
737 input_mode = input_mode_opt;
738 switch (input_mode) {
739 case syncconfig:
740 /*
741 * syncconfig is invoked during the build stage.
742 * Suppress distracting
743 * "configuration written to ..."
744 */
745 conf_set_message_callback(NULL);
746 sync_kconfig = 1;
747 break;
748 case defconfig:
749 case savedefconfig:
750 defconfig_file = optarg;
751 break;
752 case randconfig:
753 set_randconfig_seed();
754 break;
755 default:
756 break;
757 }
758 default:
759 break;
760 }
761 }
762 if (ac == optind) {
763 fprintf(stderr, "%s: Kconfig file missing\n", av[0]);
764 conf_usage(progname);
765 exit(1);
766 }
767 conf_parse(av[optind]);
768 //zconfdump(stdout);
769
770 switch (input_mode) {
771 case defconfig:
772 if (conf_read(defconfig_file)) {
773 fprintf(stderr,
774 "***\n"
775 "*** Can't find default configuration \"%s\"!\n"
776 "***\n",
777 defconfig_file);
778 exit(1);
779 }
780 break;
781 case savedefconfig:
782 case syncconfig:
783 case oldaskconfig:
784 case oldconfig:
785 case listnewconfig:
786 case helpnewconfig:
787 case olddefconfig:
788 case yes2modconfig:
789 case mod2yesconfig:
790 case mod2noconfig:
791 conf_read(NULL);
792 break;
793 case allnoconfig:
794 case allyesconfig:
795 case allmodconfig:
796 case alldefconfig:
797 case randconfig:
798 name = getenv("KCONFIG_ALLCONFIG");
799 if (!name)
800 break;
801 if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) {
802 if (conf_read_simple(name, S_DEF_USER)) {
803 fprintf(stderr,
804 "*** Can't read seed configuration \"%s\"!\n",
805 name);
806 exit(1);
807 }
808 break;
809 }
810 switch (input_mode) {
811 case allnoconfig: name = "allno.config"; break;
812 case allyesconfig: name = "allyes.config"; break;
813 case allmodconfig: name = "allmod.config"; break;
814 case alldefconfig: name = "alldef.config"; break;
815 case randconfig: name = "allrandom.config"; break;
816 default: break;
817 }
818 if (conf_read_simple(name, S_DEF_USER) &&
819 conf_read_simple("all.config", S_DEF_USER)) {
820 fprintf(stderr,
821 "*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n",
822 name);
823 exit(1);
824 }
825 break;
826 default:
827 break;
828 }
829
830 if (sync_kconfig) {
831 name = getenv("KCONFIG_NOSILENTUPDATE");
832 if (name && *name) {
833 if (conf_get_changed()) {
834 fprintf(stderr,
835 "\n*** The configuration requires explicit update.\n\n");
836 return 1;
837 }
838 no_conf_write = 1;
839 }
840 }
841
842 switch (input_mode) {
843 case allnoconfig:
844 conf_set_all_new_symbols(def_no);
845 break;
846 case allyesconfig:
847 conf_set_all_new_symbols(def_yes);
848 break;
849 case allmodconfig:
850 conf_set_all_new_symbols(def_mod);
851 break;
852 case alldefconfig:
853 conf_set_all_new_symbols(def_default);
854 break;
855 case randconfig:
856 /* Really nothing to do in this loop */
857 while (conf_set_all_new_symbols(def_random)) ;
858 break;
859 case defconfig:
860 conf_set_all_new_symbols(def_default);
861 break;
862 case savedefconfig:
863 break;
864 case yes2modconfig:
865 conf_rewrite_tristates(yes, mod);
866 break;
867 case mod2yesconfig:
868 conf_rewrite_tristates(mod, yes);
869 break;
870 case mod2noconfig:
871 conf_rewrite_tristates(mod, no);
872 break;
873 case oldaskconfig:
874 rootEntry = &rootmenu;
875 conf(&rootmenu);
876 input_mode = oldconfig;
877 /* fall through */
878 case oldconfig:
879 case listnewconfig:
880 case helpnewconfig:
881 case syncconfig:
882 /* Update until a loop caused no more changes */
883 do {
884 conf_cnt = 0;
885 check_conf(&rootmenu);
886 } while (conf_cnt);
887 break;
888 case olddefconfig:
889 default:
890 break;
891 }
892
893 if (input_mode == savedefconfig) {
894 if (conf_write_defconfig(defconfig_file)) {
895 fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n",
896 defconfig_file);
897 return 1;
898 }
899 } else if (input_mode != listnewconfig && input_mode != helpnewconfig) {
900 if (!no_conf_write && conf_write(NULL)) {
901 fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
902 exit(1);
903 }
904
905 /*
906 * Create auto.conf if it does not exist.
907 * This prevents GNU Make 4.1 or older from emitting
908 * "include/config/auto.conf: No such file or directory"
909 * in the top-level Makefile
910 *
911 * syncconfig always creates or updates auto.conf because it is
912 * used during the build.
913 */
914 if (conf_write_autoconf(sync_kconfig) && sync_kconfig) {
915 fprintf(stderr,
916 "\n*** Error during sync of the configuration.\n\n");
917 return 1;
918 }
919 }
920 return 0;
921}
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
20static void conf(struct menu *menu);
21static void check_conf(struct menu *menu);
22
23enum 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};
41static enum input_mode input_mode = oldaskconfig;
42static int input_mode_opt;
43static int indent = 1;
44static int tty_stdio;
45static int sync_kconfig;
46static int conf_cnt;
47static char line[PATH_MAX];
48static struct menu *rootEntry;
49
50static 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
60static 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. */
78static 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
87static 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
117static 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
164enum conf_def_mode {
165 def_default,
166 def_yes,
167 def_mod,
168 def_no,
169 def_random
170};
171
172static 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
305static 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
317static 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
349static 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
382static 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;
444help:
445 print_help(menu);
446 }
447}
448
449static int 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 return 1;
463 case mod:
464 return 0;
465 case yes:
466 break;
467 }
468 } else {
469 switch (sym_get_tristate_value(sym)) {
470 case no:
471 return 1;
472 case mod:
473 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
474 return 0;
475 case yes:
476 break;
477 }
478 }
479
480 while (1) {
481 int cnt, def;
482
483 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
484 def_sym = sym_get_choice_value(sym);
485 cnt = def = 0;
486 line[0] = 0;
487 for (child = menu->list; child; child = child->next) {
488 if (!menu_is_visible(child))
489 continue;
490 if (!child->sym) {
491 printf("%*c %s\n", indent, '*', menu_get_prompt(child));
492 continue;
493 }
494 cnt++;
495 if (child->sym == def_sym) {
496 def = cnt;
497 printf("%*c", indent, '>');
498 } else
499 printf("%*c", indent, ' ');
500 printf(" %d. %s", cnt, menu_get_prompt(child));
501 if (child->sym->name)
502 printf(" (%s)", child->sym->name);
503 if (!sym_has_value(child->sym))
504 printf(" (NEW)");
505 printf("\n");
506 }
507 printf("%*schoice", indent - 1, "");
508 if (cnt == 1) {
509 printf("[1]: 1\n");
510 goto conf_childs;
511 }
512 printf("[1-%d?]: ", cnt);
513 switch (input_mode) {
514 case oldconfig:
515 case syncconfig:
516 if (!is_new) {
517 cnt = def;
518 printf("%d\n", cnt);
519 break;
520 }
521 /* fall through */
522 case oldaskconfig:
523 fflush(stdout);
524 xfgets(line, sizeof(line), stdin);
525 strip(line);
526 if (line[0] == '?') {
527 print_help(menu);
528 continue;
529 }
530 if (!line[0])
531 cnt = def;
532 else if (isdigit(line[0]))
533 cnt = atoi(line);
534 else
535 continue;
536 break;
537 default:
538 break;
539 }
540
541 conf_childs:
542 for (child = menu->list; child; child = child->next) {
543 if (!child->sym || !menu_is_visible(child))
544 continue;
545 if (!--cnt)
546 break;
547 }
548 if (!child)
549 continue;
550 if (line[0] && line[strlen(line) - 1] == '?') {
551 print_help(child);
552 continue;
553 }
554 sym_set_tristate_value(child->sym, yes);
555 return 1;
556 }
557}
558
559static void conf(struct menu *menu)
560{
561 struct symbol *sym;
562 struct property *prop;
563 struct menu *child;
564
565 if (!menu_is_visible(menu))
566 return;
567
568 sym = menu->sym;
569 prop = menu->prompt;
570 if (prop) {
571 const char *prompt;
572
573 switch (prop->type) {
574 case P_MENU:
575 /*
576 * Except in oldaskconfig mode, we show only menus that
577 * contain new symbols.
578 */
579 if (input_mode != oldaskconfig && rootEntry != menu) {
580 check_conf(menu);
581 return;
582 }
583 /* fall through */
584 case P_COMMENT:
585 prompt = menu_get_prompt(menu);
586 if (prompt)
587 printf("%*c\n%*c %s\n%*c\n",
588 indent, '*',
589 indent, '*', prompt,
590 indent, '*');
591 default:
592 ;
593 }
594 }
595
596 if (!sym)
597 goto conf_childs;
598
599 if (sym_is_choice(sym)) {
600 conf_choice(menu);
601 if (sym->curr.tri != mod)
602 return;
603 goto conf_childs;
604 }
605
606 switch (sym->type) {
607 case S_INT:
608 case S_HEX:
609 case S_STRING:
610 conf_string(menu);
611 break;
612 default:
613 conf_sym(menu);
614 break;
615 }
616
617conf_childs:
618 if (sym)
619 indent += 2;
620 for (child = menu->list; child; child = child->next)
621 conf(child);
622 if (sym)
623 indent -= 2;
624}
625
626static void check_conf(struct menu *menu)
627{
628 struct symbol *sym;
629 struct menu *child;
630
631 if (!menu_is_visible(menu))
632 return;
633
634 sym = menu->sym;
635 if (sym && !sym_has_value(sym) &&
636 (sym_is_changeable(sym) ||
637 (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes))) {
638
639 switch (input_mode) {
640 case listnewconfig:
641 if (sym->name)
642 print_symbol_for_listconfig(sym);
643 break;
644 case helpnewconfig:
645 printf("-----\n");
646 print_help(menu);
647 printf("-----\n");
648 break;
649 default:
650 if (!conf_cnt++)
651 printf("*\n* Restart config...\n*\n");
652 rootEntry = menu_get_parent_menu(menu);
653 conf(rootEntry);
654 break;
655 }
656 }
657
658 for (child = menu->list; child; child = child->next)
659 check_conf(child);
660}
661
662static const struct option long_opts[] = {
663 {"help", no_argument, NULL, 'h'},
664 {"silent", no_argument, NULL, 's'},
665 {"oldaskconfig", no_argument, &input_mode_opt, oldaskconfig},
666 {"oldconfig", no_argument, &input_mode_opt, oldconfig},
667 {"syncconfig", no_argument, &input_mode_opt, syncconfig},
668 {"defconfig", required_argument, &input_mode_opt, defconfig},
669 {"savedefconfig", required_argument, &input_mode_opt, savedefconfig},
670 {"allnoconfig", no_argument, &input_mode_opt, allnoconfig},
671 {"allyesconfig", no_argument, &input_mode_opt, allyesconfig},
672 {"allmodconfig", no_argument, &input_mode_opt, allmodconfig},
673 {"alldefconfig", no_argument, &input_mode_opt, alldefconfig},
674 {"randconfig", no_argument, &input_mode_opt, randconfig},
675 {"listnewconfig", no_argument, &input_mode_opt, listnewconfig},
676 {"helpnewconfig", no_argument, &input_mode_opt, helpnewconfig},
677 {"olddefconfig", no_argument, &input_mode_opt, olddefconfig},
678 {"yes2modconfig", no_argument, &input_mode_opt, yes2modconfig},
679 {"mod2yesconfig", no_argument, &input_mode_opt, mod2yesconfig},
680 {"mod2noconfig", no_argument, &input_mode_opt, mod2noconfig},
681 {NULL, 0, NULL, 0}
682};
683
684static void conf_usage(const char *progname)
685{
686 printf("Usage: %s [options] <kconfig-file>\n", progname);
687 printf("\n");
688 printf("Generic options:\n");
689 printf(" -h, --help Print this message and exit.\n");
690 printf(" -s, --silent Do not print log.\n");
691 printf("\n");
692 printf("Mode options:\n");
693 printf(" --listnewconfig List new options\n");
694 printf(" --helpnewconfig List new options and help text\n");
695 printf(" --oldaskconfig Start a new configuration using a line-oriented program\n");
696 printf(" --oldconfig Update a configuration using a provided .config as base\n");
697 printf(" --syncconfig Similar to oldconfig but generates configuration in\n"
698 " include/{generated/,config/}\n");
699 printf(" --olddefconfig Same as oldconfig but sets new symbols to their default value\n");
700 printf(" --defconfig <file> New config with default defined in <file>\n");
701 printf(" --savedefconfig <file> Save the minimal current configuration to <file>\n");
702 printf(" --allnoconfig New config where all options are answered with no\n");
703 printf(" --allyesconfig New config where all options are answered with yes\n");
704 printf(" --allmodconfig New config where all options are answered with mod\n");
705 printf(" --alldefconfig New config with all symbols set to default\n");
706 printf(" --randconfig New config with random answer to all options\n");
707 printf(" --yes2modconfig Change answers from yes to mod if possible\n");
708 printf(" --mod2yesconfig Change answers from mod to yes if possible\n");
709 printf(" --mod2noconfig Change answers from mod to no if possible\n");
710 printf(" (If none of the above is given, --oldaskconfig is the default)\n");
711}
712
713int main(int ac, char **av)
714{
715 const char *progname = av[0];
716 int opt;
717 const char *name, *defconfig_file = NULL /* gcc uninit */;
718 int no_conf_write = 0;
719
720 tty_stdio = isatty(0) && isatty(1);
721
722 while ((opt = getopt_long(ac, av, "hs", long_opts, NULL)) != -1) {
723 switch (opt) {
724 case 'h':
725 conf_usage(progname);
726 exit(1);
727 break;
728 case 's':
729 conf_set_message_callback(NULL);
730 break;
731 case 0:
732 input_mode = input_mode_opt;
733 switch (input_mode) {
734 case syncconfig:
735 /*
736 * syncconfig is invoked during the build stage.
737 * Suppress distracting
738 * "configuration written to ..."
739 */
740 conf_set_message_callback(NULL);
741 sync_kconfig = 1;
742 break;
743 case defconfig:
744 case savedefconfig:
745 defconfig_file = optarg;
746 break;
747 case randconfig:
748 set_randconfig_seed();
749 break;
750 default:
751 break;
752 }
753 default:
754 break;
755 }
756 }
757 if (ac == optind) {
758 fprintf(stderr, "%s: Kconfig file missing\n", av[0]);
759 conf_usage(progname);
760 exit(1);
761 }
762 conf_parse(av[optind]);
763 //zconfdump(stdout);
764
765 switch (input_mode) {
766 case defconfig:
767 if (conf_read(defconfig_file)) {
768 fprintf(stderr,
769 "***\n"
770 "*** Can't find default configuration \"%s\"!\n"
771 "***\n",
772 defconfig_file);
773 exit(1);
774 }
775 break;
776 case savedefconfig:
777 case syncconfig:
778 case oldaskconfig:
779 case oldconfig:
780 case listnewconfig:
781 case helpnewconfig:
782 case olddefconfig:
783 case yes2modconfig:
784 case mod2yesconfig:
785 case mod2noconfig:
786 conf_read(NULL);
787 break;
788 case allnoconfig:
789 case allyesconfig:
790 case allmodconfig:
791 case alldefconfig:
792 case randconfig:
793 name = getenv("KCONFIG_ALLCONFIG");
794 if (!name)
795 break;
796 if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) {
797 if (conf_read_simple(name, S_DEF_USER)) {
798 fprintf(stderr,
799 "*** Can't read seed configuration \"%s\"!\n",
800 name);
801 exit(1);
802 }
803 break;
804 }
805 switch (input_mode) {
806 case allnoconfig: name = "allno.config"; break;
807 case allyesconfig: name = "allyes.config"; break;
808 case allmodconfig: name = "allmod.config"; break;
809 case alldefconfig: name = "alldef.config"; break;
810 case randconfig: name = "allrandom.config"; break;
811 default: break;
812 }
813 if (conf_read_simple(name, S_DEF_USER) &&
814 conf_read_simple("all.config", S_DEF_USER)) {
815 fprintf(stderr,
816 "*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n",
817 name);
818 exit(1);
819 }
820 break;
821 default:
822 break;
823 }
824
825 if (conf_errors())
826 exit(1);
827
828 if (sync_kconfig) {
829 name = getenv("KCONFIG_NOSILENTUPDATE");
830 if (name && *name) {
831 if (conf_get_changed()) {
832 fprintf(stderr,
833 "\n*** The configuration requires explicit update.\n\n");
834 return 1;
835 }
836 no_conf_write = 1;
837 }
838 }
839
840 switch (input_mode) {
841 case allnoconfig:
842 conf_set_all_new_symbols(def_no);
843 break;
844 case allyesconfig:
845 conf_set_all_new_symbols(def_yes);
846 break;
847 case allmodconfig:
848 conf_set_all_new_symbols(def_mod);
849 break;
850 case alldefconfig:
851 conf_set_all_new_symbols(def_default);
852 break;
853 case randconfig:
854 /* Really nothing to do in this loop */
855 while (conf_set_all_new_symbols(def_random)) ;
856 break;
857 case defconfig:
858 conf_set_all_new_symbols(def_default);
859 break;
860 case savedefconfig:
861 break;
862 case yes2modconfig:
863 conf_rewrite_tristates(yes, mod);
864 break;
865 case mod2yesconfig:
866 conf_rewrite_tristates(mod, yes);
867 break;
868 case mod2noconfig:
869 conf_rewrite_tristates(mod, no);
870 break;
871 case oldaskconfig:
872 rootEntry = &rootmenu;
873 conf(&rootmenu);
874 input_mode = oldconfig;
875 /* fall through */
876 case oldconfig:
877 case listnewconfig:
878 case helpnewconfig:
879 case syncconfig:
880 /* Update until a loop caused no more changes */
881 do {
882 conf_cnt = 0;
883 check_conf(&rootmenu);
884 } while (conf_cnt);
885 break;
886 case olddefconfig:
887 default:
888 break;
889 }
890
891 if (sym_dep_errors())
892 exit(1);
893
894 if (input_mode == savedefconfig) {
895 if (conf_write_defconfig(defconfig_file)) {
896 fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n",
897 defconfig_file);
898 return 1;
899 }
900 } else if (input_mode != listnewconfig && input_mode != helpnewconfig) {
901 if (!no_conf_write && conf_write(NULL)) {
902 fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
903 exit(1);
904 }
905
906 /*
907 * Create auto.conf if it does not exist.
908 * This prevents GNU Make 4.1 or older from emitting
909 * "include/config/auto.conf: No such file or directory"
910 * in the top-level Makefile
911 *
912 * syncconfig always creates or updates auto.conf because it is
913 * used during the build.
914 */
915 if (conf_write_autoconf(sync_kconfig) && sync_kconfig) {
916 fprintf(stderr,
917 "\n*** Error during sync of the configuration.\n\n");
918 return 1;
919 }
920 }
921 return 0;
922}