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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};
39static enum input_mode input_mode = oldaskconfig;
40static int input_mode_opt;
41static int indent = 1;
42static int tty_stdio;
43static int sync_kconfig;
44static int conf_cnt;
45static char line[PATH_MAX];
46static struct menu *rootEntry;
47
48static void print_help(struct menu *menu)
49{
50 struct gstr help = str_new();
51
52 menu_get_ext_help(menu, &help);
53
54 printf("\n%s\n", str_get(&help));
55 str_free(&help);
56}
57
58static void strip(char *str)
59{
60 char *p = str;
61 int l;
62
63 while ((isspace(*p)))
64 p++;
65 l = strlen(p);
66 if (p != str)
67 memmove(str, p, l + 1);
68 if (!l)
69 return;
70 p = str + l - 1;
71 while ((isspace(*p)))
72 *p-- = 0;
73}
74
75/* Helper function to facilitate fgets() by Jean Sacren. */
76static void xfgets(char *str, int size, FILE *in)
77{
78 if (!fgets(str, size, in))
79 fprintf(stderr, "\nError in reading or end of file.\n");
80
81 if (!tty_stdio)
82 printf("%s", str);
83}
84
85static void set_randconfig_seed(void)
86{
87 unsigned int seed;
88 char *env;
89 bool seed_set = false;
90
91 env = getenv("KCONFIG_SEED");
92 if (env && *env) {
93 char *endp;
94
95 seed = strtol(env, &endp, 0);
96 if (*endp == '\0')
97 seed_set = true;
98 }
99
100 if (!seed_set) {
101 struct timeval now;
102
103 /*
104 * Use microseconds derived seed, compensate for systems where it may
105 * be zero.
106 */
107 gettimeofday(&now, NULL);
108 seed = (now.tv_sec + 1) * (now.tv_usec + 1);
109 }
110
111 printf("KCONFIG_SEED=0x%X\n", seed);
112 srand(seed);
113}
114
115static bool randomize_choice_values(struct symbol *csym)
116{
117 struct property *prop;
118 struct symbol *sym;
119 struct expr *e;
120 int cnt, def;
121
122 /*
123 * If choice is mod then we may have more items selected
124 * and if no then no-one.
125 * In both cases stop.
126 */
127 if (csym->curr.tri != yes)
128 return false;
129
130 prop = sym_get_choice_prop(csym);
131
132 /* count entries in choice block */
133 cnt = 0;
134 expr_list_for_each_sym(prop->expr, e, sym)
135 cnt++;
136
137 /*
138 * find a random value and set it to yes,
139 * set the rest to no so we have only one set
140 */
141 def = rand() % cnt;
142
143 cnt = 0;
144 expr_list_for_each_sym(prop->expr, e, sym) {
145 if (def == cnt++) {
146 sym->def[S_DEF_USER].tri = yes;
147 csym->def[S_DEF_USER].val = sym;
148 } else {
149 sym->def[S_DEF_USER].tri = no;
150 }
151 sym->flags |= SYMBOL_DEF_USER;
152 /* clear VALID to get value calculated */
153 sym->flags &= ~SYMBOL_VALID;
154 }
155 csym->flags |= SYMBOL_DEF_USER;
156 /* clear VALID to get value calculated */
157 csym->flags &= ~SYMBOL_VALID;
158
159 return true;
160}
161
162enum conf_def_mode {
163 def_default,
164 def_yes,
165 def_mod,
166 def_y2m,
167 def_m2y,
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 i, 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(i, 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(i, 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(i, 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_mod_or_yes(enum conf_def_mode mode)
306{
307 struct symbol *sym;
308 int i;
309 tristate old_val = (mode == def_y2m) ? yes : mod;
310 tristate new_val = (mode == def_y2m) ? mod : yes;
311
312 for_all_symbols(i, sym) {
313 if (sym_get_type(sym) == S_TRISTATE &&
314 sym->def[S_DEF_USER].tri == old_val)
315 sym->def[S_DEF_USER].tri = new_val;
316 }
317 sym_clear_all_valid();
318}
319
320static int conf_askvalue(struct symbol *sym, const char *def)
321{
322 if (!sym_has_value(sym))
323 printf("(NEW) ");
324
325 line[0] = '\n';
326 line[1] = 0;
327
328 if (!sym_is_changeable(sym)) {
329 printf("%s\n", def);
330 line[0] = '\n';
331 line[1] = 0;
332 return 0;
333 }
334
335 switch (input_mode) {
336 case oldconfig:
337 case syncconfig:
338 if (sym_has_value(sym)) {
339 printf("%s\n", def);
340 return 0;
341 }
342 /* fall through */
343 default:
344 fflush(stdout);
345 xfgets(line, sizeof(line), stdin);
346 break;
347 }
348
349 return 1;
350}
351
352static int conf_string(struct menu *menu)
353{
354 struct symbol *sym = menu->sym;
355 const char *def;
356
357 while (1) {
358 printf("%*s%s ", indent - 1, "", menu->prompt->text);
359 printf("(%s) ", sym->name);
360 def = sym_get_string_value(sym);
361 if (def)
362 printf("[%s] ", def);
363 if (!conf_askvalue(sym, def))
364 return 0;
365 switch (line[0]) {
366 case '\n':
367 break;
368 case '?':
369 /* print help */
370 if (line[1] == '\n') {
371 print_help(menu);
372 def = NULL;
373 break;
374 }
375 /* fall through */
376 default:
377 line[strlen(line)-1] = 0;
378 def = line;
379 }
380 if (def && sym_set_string_value(sym, def))
381 return 0;
382 }
383}
384
385static int conf_sym(struct menu *menu)
386{
387 struct symbol *sym = menu->sym;
388 tristate oldval, newval;
389
390 while (1) {
391 printf("%*s%s ", indent - 1, "", menu->prompt->text);
392 if (sym->name)
393 printf("(%s) ", sym->name);
394 putchar('[');
395 oldval = sym_get_tristate_value(sym);
396 switch (oldval) {
397 case no:
398 putchar('N');
399 break;
400 case mod:
401 putchar('M');
402 break;
403 case yes:
404 putchar('Y');
405 break;
406 }
407 if (oldval != no && sym_tristate_within_range(sym, no))
408 printf("/n");
409 if (oldval != mod && sym_tristate_within_range(sym, mod))
410 printf("/m");
411 if (oldval != yes && sym_tristate_within_range(sym, yes))
412 printf("/y");
413 printf("/?] ");
414 if (!conf_askvalue(sym, sym_get_string_value(sym)))
415 return 0;
416 strip(line);
417
418 switch (line[0]) {
419 case 'n':
420 case 'N':
421 newval = no;
422 if (!line[1] || !strcmp(&line[1], "o"))
423 break;
424 continue;
425 case 'm':
426 case 'M':
427 newval = mod;
428 if (!line[1])
429 break;
430 continue;
431 case 'y':
432 case 'Y':
433 newval = yes;
434 if (!line[1] || !strcmp(&line[1], "es"))
435 break;
436 continue;
437 case 0:
438 newval = oldval;
439 break;
440 case '?':
441 goto help;
442 default:
443 continue;
444 }
445 if (sym_set_tristate_value(sym, newval))
446 return 0;
447help:
448 print_help(menu);
449 }
450}
451
452static int conf_choice(struct menu *menu)
453{
454 struct symbol *sym, *def_sym;
455 struct menu *child;
456 bool is_new;
457
458 sym = menu->sym;
459 is_new = !sym_has_value(sym);
460 if (sym_is_changeable(sym)) {
461 conf_sym(menu);
462 sym_calc_value(sym);
463 switch (sym_get_tristate_value(sym)) {
464 case no:
465 return 1;
466 case mod:
467 return 0;
468 case yes:
469 break;
470 }
471 } else {
472 switch (sym_get_tristate_value(sym)) {
473 case no:
474 return 1;
475 case mod:
476 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
477 return 0;
478 case yes:
479 break;
480 }
481 }
482
483 while (1) {
484 int cnt, def;
485
486 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
487 def_sym = sym_get_choice_value(sym);
488 cnt = def = 0;
489 line[0] = 0;
490 for (child = menu->list; child; child = child->next) {
491 if (!menu_is_visible(child))
492 continue;
493 if (!child->sym) {
494 printf("%*c %s\n", indent, '*', menu_get_prompt(child));
495 continue;
496 }
497 cnt++;
498 if (child->sym == def_sym) {
499 def = cnt;
500 printf("%*c", indent, '>');
501 } else
502 printf("%*c", indent, ' ');
503 printf(" %d. %s", cnt, menu_get_prompt(child));
504 if (child->sym->name)
505 printf(" (%s)", child->sym->name);
506 if (!sym_has_value(child->sym))
507 printf(" (NEW)");
508 printf("\n");
509 }
510 printf("%*schoice", indent - 1, "");
511 if (cnt == 1) {
512 printf("[1]: 1\n");
513 goto conf_childs;
514 }
515 printf("[1-%d?]: ", cnt);
516 switch (input_mode) {
517 case oldconfig:
518 case syncconfig:
519 if (!is_new) {
520 cnt = def;
521 printf("%d\n", cnt);
522 break;
523 }
524 /* fall through */
525 case oldaskconfig:
526 fflush(stdout);
527 xfgets(line, sizeof(line), stdin);
528 strip(line);
529 if (line[0] == '?') {
530 print_help(menu);
531 continue;
532 }
533 if (!line[0])
534 cnt = def;
535 else if (isdigit(line[0]))
536 cnt = atoi(line);
537 else
538 continue;
539 break;
540 default:
541 break;
542 }
543
544 conf_childs:
545 for (child = menu->list; child; child = child->next) {
546 if (!child->sym || !menu_is_visible(child))
547 continue;
548 if (!--cnt)
549 break;
550 }
551 if (!child)
552 continue;
553 if (line[0] && line[strlen(line) - 1] == '?') {
554 print_help(child);
555 continue;
556 }
557 sym_set_choice_value(sym, child->sym);
558 for (child = child->list; child; child = child->next) {
559 indent += 2;
560 conf(child);
561 indent -= 2;
562 }
563 return 1;
564 }
565}
566
567static void conf(struct menu *menu)
568{
569 struct symbol *sym;
570 struct property *prop;
571 struct menu *child;
572
573 if (!menu_is_visible(menu))
574 return;
575
576 sym = menu->sym;
577 prop = menu->prompt;
578 if (prop) {
579 const char *prompt;
580
581 switch (prop->type) {
582 case P_MENU:
583 /*
584 * Except in oldaskconfig mode, we show only menus that
585 * contain new symbols.
586 */
587 if (input_mode != oldaskconfig && rootEntry != menu) {
588 check_conf(menu);
589 return;
590 }
591 /* fall through */
592 case P_COMMENT:
593 prompt = menu_get_prompt(menu);
594 if (prompt)
595 printf("%*c\n%*c %s\n%*c\n",
596 indent, '*',
597 indent, '*', prompt,
598 indent, '*');
599 default:
600 ;
601 }
602 }
603
604 if (!sym)
605 goto conf_childs;
606
607 if (sym_is_choice(sym)) {
608 conf_choice(menu);
609 if (sym->curr.tri != mod)
610 return;
611 goto conf_childs;
612 }
613
614 switch (sym->type) {
615 case S_INT:
616 case S_HEX:
617 case S_STRING:
618 conf_string(menu);
619 break;
620 default:
621 conf_sym(menu);
622 break;
623 }
624
625conf_childs:
626 if (sym)
627 indent += 2;
628 for (child = menu->list; child; child = child->next)
629 conf(child);
630 if (sym)
631 indent -= 2;
632}
633
634static void check_conf(struct menu *menu)
635{
636 struct symbol *sym;
637 struct menu *child;
638
639 if (!menu_is_visible(menu))
640 return;
641
642 sym = menu->sym;
643 if (sym && !sym_has_value(sym) &&
644 (sym_is_changeable(sym) ||
645 (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes))) {
646
647 switch (input_mode) {
648 case listnewconfig:
649 if (sym->name) {
650 const char *str;
651
652 if (sym->type == S_STRING) {
653 str = sym_get_string_value(sym);
654 str = sym_escape_string_value(str);
655 printf("%s%s=%s\n", CONFIG_, sym->name, str);
656 free((void *)str);
657 } else {
658 str = sym_get_string_value(sym);
659 printf("%s%s=%s\n", CONFIG_, sym->name, str);
660 }
661 }
662 break;
663 case helpnewconfig:
664 printf("-----\n");
665 print_help(menu);
666 printf("-----\n");
667 break;
668 default:
669 if (!conf_cnt++)
670 printf("*\n* Restart config...\n*\n");
671 rootEntry = menu_get_parent_menu(menu);
672 conf(rootEntry);
673 break;
674 }
675 }
676
677 for (child = menu->list; child; child = child->next)
678 check_conf(child);
679}
680
681static const struct option long_opts[] = {
682 {"help", no_argument, NULL, 'h'},
683 {"silent", no_argument, NULL, 's'},
684 {"oldaskconfig", no_argument, &input_mode_opt, oldaskconfig},
685 {"oldconfig", no_argument, &input_mode_opt, oldconfig},
686 {"syncconfig", no_argument, &input_mode_opt, syncconfig},
687 {"defconfig", required_argument, &input_mode_opt, defconfig},
688 {"savedefconfig", required_argument, &input_mode_opt, savedefconfig},
689 {"allnoconfig", no_argument, &input_mode_opt, allnoconfig},
690 {"allyesconfig", no_argument, &input_mode_opt, allyesconfig},
691 {"allmodconfig", no_argument, &input_mode_opt, allmodconfig},
692 {"alldefconfig", no_argument, &input_mode_opt, alldefconfig},
693 {"randconfig", no_argument, &input_mode_opt, randconfig},
694 {"listnewconfig", no_argument, &input_mode_opt, listnewconfig},
695 {"helpnewconfig", no_argument, &input_mode_opt, helpnewconfig},
696 {"olddefconfig", no_argument, &input_mode_opt, olddefconfig},
697 {"yes2modconfig", no_argument, &input_mode_opt, yes2modconfig},
698 {"mod2yesconfig", no_argument, &input_mode_opt, mod2yesconfig},
699 {NULL, 0, NULL, 0}
700};
701
702static void conf_usage(const char *progname)
703{
704 printf("Usage: %s [options] <kconfig-file>\n", progname);
705 printf("\n");
706 printf("Generic options:\n");
707 printf(" -h, --help Print this message and exit.\n");
708 printf(" -s, --silent Do not print log.\n");
709 printf("\n");
710 printf("Mode options:\n");
711 printf(" --listnewconfig List new options\n");
712 printf(" --helpnewconfig List new options and help text\n");
713 printf(" --oldaskconfig Start a new configuration using a line-oriented program\n");
714 printf(" --oldconfig Update a configuration using a provided .config as base\n");
715 printf(" --syncconfig Similar to oldconfig but generates configuration in\n"
716 " include/{generated/,config/}\n");
717 printf(" --olddefconfig Same as oldconfig but sets new symbols to their default value\n");
718 printf(" --defconfig <file> New config with default defined in <file>\n");
719 printf(" --savedefconfig <file> Save the minimal current configuration to <file>\n");
720 printf(" --allnoconfig New config where all options are answered with no\n");
721 printf(" --allyesconfig New config where all options are answered with yes\n");
722 printf(" --allmodconfig New config where all options are answered with mod\n");
723 printf(" --alldefconfig New config with all symbols set to default\n");
724 printf(" --randconfig New config with random answer to all options\n");
725 printf(" --yes2modconfig Change answers from yes to mod if possible\n");
726 printf(" --mod2yesconfig Change answers from mod to yes if possible\n");
727 printf(" (If none of the above is given, --oldaskconfig is the default)\n");
728}
729
730int main(int ac, char **av)
731{
732 const char *progname = av[0];
733 int opt;
734 const char *name, *defconfig_file = NULL /* gcc uninit */;
735 int no_conf_write = 0;
736
737 tty_stdio = isatty(0) && isatty(1);
738
739 while ((opt = getopt_long(ac, av, "hs", long_opts, NULL)) != -1) {
740 switch (opt) {
741 case 'h':
742 conf_usage(progname);
743 exit(1);
744 break;
745 case 's':
746 conf_set_message_callback(NULL);
747 break;
748 case 0:
749 input_mode = input_mode_opt;
750 switch (input_mode) {
751 case syncconfig:
752 /*
753 * syncconfig is invoked during the build stage.
754 * Suppress distracting
755 * "configuration written to ..."
756 */
757 conf_set_message_callback(NULL);
758 sync_kconfig = 1;
759 break;
760 case defconfig:
761 case savedefconfig:
762 defconfig_file = optarg;
763 break;
764 case randconfig:
765 set_randconfig_seed();
766 break;
767 default:
768 break;
769 }
770 default:
771 break;
772 }
773 }
774 if (ac == optind) {
775 fprintf(stderr, "%s: Kconfig file missing\n", av[0]);
776 conf_usage(progname);
777 exit(1);
778 }
779 conf_parse(av[optind]);
780 //zconfdump(stdout);
781
782 switch (input_mode) {
783 case defconfig:
784 if (conf_read(defconfig_file)) {
785 fprintf(stderr,
786 "***\n"
787 "*** Can't find default configuration \"%s\"!\n"
788 "***\n",
789 defconfig_file);
790 exit(1);
791 }
792 break;
793 case savedefconfig:
794 case syncconfig:
795 case oldaskconfig:
796 case oldconfig:
797 case listnewconfig:
798 case helpnewconfig:
799 case olddefconfig:
800 case yes2modconfig:
801 case mod2yesconfig:
802 conf_read(NULL);
803 break;
804 case allnoconfig:
805 case allyesconfig:
806 case allmodconfig:
807 case alldefconfig:
808 case randconfig:
809 name = getenv("KCONFIG_ALLCONFIG");
810 if (!name)
811 break;
812 if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) {
813 if (conf_read_simple(name, S_DEF_USER)) {
814 fprintf(stderr,
815 "*** Can't read seed configuration \"%s\"!\n",
816 name);
817 exit(1);
818 }
819 break;
820 }
821 switch (input_mode) {
822 case allnoconfig: name = "allno.config"; break;
823 case allyesconfig: name = "allyes.config"; break;
824 case allmodconfig: name = "allmod.config"; break;
825 case alldefconfig: name = "alldef.config"; break;
826 case randconfig: name = "allrandom.config"; break;
827 default: break;
828 }
829 if (conf_read_simple(name, S_DEF_USER) &&
830 conf_read_simple("all.config", S_DEF_USER)) {
831 fprintf(stderr,
832 "*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n",
833 name);
834 exit(1);
835 }
836 break;
837 default:
838 break;
839 }
840
841 if (sync_kconfig) {
842 name = getenv("KCONFIG_NOSILENTUPDATE");
843 if (name && *name) {
844 if (conf_get_changed()) {
845 fprintf(stderr,
846 "\n*** The configuration requires explicit update.\n\n");
847 return 1;
848 }
849 no_conf_write = 1;
850 }
851 }
852
853 switch (input_mode) {
854 case allnoconfig:
855 conf_set_all_new_symbols(def_no);
856 break;
857 case allyesconfig:
858 conf_set_all_new_symbols(def_yes);
859 break;
860 case allmodconfig:
861 conf_set_all_new_symbols(def_mod);
862 break;
863 case alldefconfig:
864 conf_set_all_new_symbols(def_default);
865 break;
866 case randconfig:
867 /* Really nothing to do in this loop */
868 while (conf_set_all_new_symbols(def_random)) ;
869 break;
870 case defconfig:
871 conf_set_all_new_symbols(def_default);
872 break;
873 case savedefconfig:
874 break;
875 case yes2modconfig:
876 conf_rewrite_mod_or_yes(def_y2m);
877 break;
878 case mod2yesconfig:
879 conf_rewrite_mod_or_yes(def_m2y);
880 break;
881 case oldaskconfig:
882 rootEntry = &rootmenu;
883 conf(&rootmenu);
884 input_mode = oldconfig;
885 /* fall through */
886 case oldconfig:
887 case listnewconfig:
888 case helpnewconfig:
889 case syncconfig:
890 /* Update until a loop caused no more changes */
891 do {
892 conf_cnt = 0;
893 check_conf(&rootmenu);
894 } while (conf_cnt);
895 break;
896 case olddefconfig:
897 default:
898 break;
899 }
900
901 if (input_mode == savedefconfig) {
902 if (conf_write_defconfig(defconfig_file)) {
903 fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n",
904 defconfig_file);
905 return 1;
906 }
907 } else if (input_mode != listnewconfig && input_mode != helpnewconfig) {
908 if (!no_conf_write && conf_write(NULL)) {
909 fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
910 exit(1);
911 }
912
913 /*
914 * Create auto.conf if it does not exist.
915 * This prevents GNU Make 4.1 or older from emitting
916 * "include/config/auto.conf: No such file or directory"
917 * in the top-level Makefile
918 *
919 * syncconfig always creates or updates auto.conf because it is
920 * used during the build.
921 */
922 if (conf_write_autoconf(sync_kconfig) && sync_kconfig) {
923 fprintf(stderr,
924 "\n*** Error during sync of the configuration.\n\n");
925 return 1;
926 }
927 }
928 return 0;
929}
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}