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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 (conf_errors())
831 exit(1);
832
833 if (sync_kconfig) {
834 name = getenv("KCONFIG_NOSILENTUPDATE");
835 if (name && *name) {
836 if (conf_get_changed()) {
837 fprintf(stderr,
838 "\n*** The configuration requires explicit update.\n\n");
839 return 1;
840 }
841 no_conf_write = 1;
842 }
843 }
844
845 switch (input_mode) {
846 case allnoconfig:
847 conf_set_all_new_symbols(def_no);
848 break;
849 case allyesconfig:
850 conf_set_all_new_symbols(def_yes);
851 break;
852 case allmodconfig:
853 conf_set_all_new_symbols(def_mod);
854 break;
855 case alldefconfig:
856 conf_set_all_new_symbols(def_default);
857 break;
858 case randconfig:
859 /* Really nothing to do in this loop */
860 while (conf_set_all_new_symbols(def_random)) ;
861 break;
862 case defconfig:
863 conf_set_all_new_symbols(def_default);
864 break;
865 case savedefconfig:
866 break;
867 case yes2modconfig:
868 conf_rewrite_tristates(yes, mod);
869 break;
870 case mod2yesconfig:
871 conf_rewrite_tristates(mod, yes);
872 break;
873 case mod2noconfig:
874 conf_rewrite_tristates(mod, no);
875 break;
876 case oldaskconfig:
877 rootEntry = &rootmenu;
878 conf(&rootmenu);
879 input_mode = oldconfig;
880 /* fall through */
881 case oldconfig:
882 case listnewconfig:
883 case helpnewconfig:
884 case syncconfig:
885 /* Update until a loop caused no more changes */
886 do {
887 conf_cnt = 0;
888 check_conf(&rootmenu);
889 } while (conf_cnt);
890 break;
891 case olddefconfig:
892 default:
893 break;
894 }
895
896 if (sym_dep_errors())
897 exit(1);
898
899 if (input_mode == savedefconfig) {
900 if (conf_write_defconfig(defconfig_file)) {
901 fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n",
902 defconfig_file);
903 return 1;
904 }
905 } else if (input_mode != listnewconfig && input_mode != helpnewconfig) {
906 if (!no_conf_write && conf_write(NULL)) {
907 fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
908 exit(1);
909 }
910
911 /*
912 * Create auto.conf if it does not exist.
913 * This prevents GNU Make 4.1 or older from emitting
914 * "include/config/auto.conf: No such file or directory"
915 * in the top-level Makefile
916 *
917 * syncconfig always creates or updates auto.conf because it is
918 * used during the build.
919 */
920 if (conf_write_autoconf(sync_kconfig) && sync_kconfig) {
921 fprintf(stderr,
922 "\n*** Error during sync of the configuration.\n\n");
923 return 1;
924 }
925 }
926 return 0;
927}
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/stat.h>
15#include <sys/time.h>
16#include <errno.h>
17
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};
40static enum input_mode input_mode = oldaskconfig;
41
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 int conf_askvalue(struct symbol *sym, const char *def)
87{
88 enum symbol_type type = sym_get_type(sym);
89
90 if (!sym_has_value(sym))
91 printf("(NEW) ");
92
93 line[0] = '\n';
94 line[1] = 0;
95
96 if (!sym_is_changeable(sym)) {
97 printf("%s\n", def);
98 line[0] = '\n';
99 line[1] = 0;
100 return 0;
101 }
102
103 switch (input_mode) {
104 case oldconfig:
105 case syncconfig:
106 if (sym_has_value(sym)) {
107 printf("%s\n", def);
108 return 0;
109 }
110 /* fall through */
111 case oldaskconfig:
112 fflush(stdout);
113 xfgets(line, sizeof(line), stdin);
114 return 1;
115 default:
116 break;
117 }
118
119 switch (type) {
120 case S_INT:
121 case S_HEX:
122 case S_STRING:
123 printf("%s\n", def);
124 return 1;
125 default:
126 ;
127 }
128 printf("%s", line);
129 return 1;
130}
131
132static int conf_string(struct menu *menu)
133{
134 struct symbol *sym = menu->sym;
135 const char *def;
136
137 while (1) {
138 printf("%*s%s ", indent - 1, "", menu->prompt->text);
139 printf("(%s) ", sym->name);
140 def = sym_get_string_value(sym);
141 if (sym_get_string_value(sym))
142 printf("[%s] ", def);
143 if (!conf_askvalue(sym, def))
144 return 0;
145 switch (line[0]) {
146 case '\n':
147 break;
148 case '?':
149 /* print help */
150 if (line[1] == '\n') {
151 print_help(menu);
152 def = NULL;
153 break;
154 }
155 /* fall through */
156 default:
157 line[strlen(line)-1] = 0;
158 def = line;
159 }
160 if (def && sym_set_string_value(sym, def))
161 return 0;
162 }
163}
164
165static int conf_sym(struct menu *menu)
166{
167 struct symbol *sym = menu->sym;
168 tristate oldval, newval;
169
170 while (1) {
171 printf("%*s%s ", indent - 1, "", menu->prompt->text);
172 if (sym->name)
173 printf("(%s) ", sym->name);
174 putchar('[');
175 oldval = sym_get_tristate_value(sym);
176 switch (oldval) {
177 case no:
178 putchar('N');
179 break;
180 case mod:
181 putchar('M');
182 break;
183 case yes:
184 putchar('Y');
185 break;
186 }
187 if (oldval != no && sym_tristate_within_range(sym, no))
188 printf("/n");
189 if (oldval != mod && sym_tristate_within_range(sym, mod))
190 printf("/m");
191 if (oldval != yes && sym_tristate_within_range(sym, yes))
192 printf("/y");
193 printf("/?] ");
194 if (!conf_askvalue(sym, sym_get_string_value(sym)))
195 return 0;
196 strip(line);
197
198 switch (line[0]) {
199 case 'n':
200 case 'N':
201 newval = no;
202 if (!line[1] || !strcmp(&line[1], "o"))
203 break;
204 continue;
205 case 'm':
206 case 'M':
207 newval = mod;
208 if (!line[1])
209 break;
210 continue;
211 case 'y':
212 case 'Y':
213 newval = yes;
214 if (!line[1] || !strcmp(&line[1], "es"))
215 break;
216 continue;
217 case 0:
218 newval = oldval;
219 break;
220 case '?':
221 goto help;
222 default:
223 continue;
224 }
225 if (sym_set_tristate_value(sym, newval))
226 return 0;
227help:
228 print_help(menu);
229 }
230}
231
232static int conf_choice(struct menu *menu)
233{
234 struct symbol *sym, *def_sym;
235 struct menu *child;
236 bool is_new;
237
238 sym = menu->sym;
239 is_new = !sym_has_value(sym);
240 if (sym_is_changeable(sym)) {
241 conf_sym(menu);
242 sym_calc_value(sym);
243 switch (sym_get_tristate_value(sym)) {
244 case no:
245 return 1;
246 case mod:
247 return 0;
248 case yes:
249 break;
250 }
251 } else {
252 switch (sym_get_tristate_value(sym)) {
253 case no:
254 return 1;
255 case mod:
256 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
257 return 0;
258 case yes:
259 break;
260 }
261 }
262
263 while (1) {
264 int cnt, def;
265
266 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
267 def_sym = sym_get_choice_value(sym);
268 cnt = def = 0;
269 line[0] = 0;
270 for (child = menu->list; child; child = child->next) {
271 if (!menu_is_visible(child))
272 continue;
273 if (!child->sym) {
274 printf("%*c %s\n", indent, '*', menu_get_prompt(child));
275 continue;
276 }
277 cnt++;
278 if (child->sym == def_sym) {
279 def = cnt;
280 printf("%*c", indent, '>');
281 } else
282 printf("%*c", indent, ' ');
283 printf(" %d. %s", cnt, menu_get_prompt(child));
284 if (child->sym->name)
285 printf(" (%s)", child->sym->name);
286 if (!sym_has_value(child->sym))
287 printf(" (NEW)");
288 printf("\n");
289 }
290 printf("%*schoice", indent - 1, "");
291 if (cnt == 1) {
292 printf("[1]: 1\n");
293 goto conf_childs;
294 }
295 printf("[1-%d?]: ", cnt);
296 switch (input_mode) {
297 case oldconfig:
298 case syncconfig:
299 if (!is_new) {
300 cnt = def;
301 printf("%d\n", cnt);
302 break;
303 }
304 /* fall through */
305 case oldaskconfig:
306 fflush(stdout);
307 xfgets(line, sizeof(line), stdin);
308 strip(line);
309 if (line[0] == '?') {
310 print_help(menu);
311 continue;
312 }
313 if (!line[0])
314 cnt = def;
315 else if (isdigit(line[0]))
316 cnt = atoi(line);
317 else
318 continue;
319 break;
320 default:
321 break;
322 }
323
324 conf_childs:
325 for (child = menu->list; child; child = child->next) {
326 if (!child->sym || !menu_is_visible(child))
327 continue;
328 if (!--cnt)
329 break;
330 }
331 if (!child)
332 continue;
333 if (line[0] && line[strlen(line) - 1] == '?') {
334 print_help(child);
335 continue;
336 }
337 sym_set_choice_value(sym, child->sym);
338 for (child = child->list; child; child = child->next) {
339 indent += 2;
340 conf(child);
341 indent -= 2;
342 }
343 return 1;
344 }
345}
346
347static void conf(struct menu *menu)
348{
349 struct symbol *sym;
350 struct property *prop;
351 struct menu *child;
352
353 if (!menu_is_visible(menu))
354 return;
355
356 sym = menu->sym;
357 prop = menu->prompt;
358 if (prop) {
359 const char *prompt;
360
361 switch (prop->type) {
362 case P_MENU:
363 /*
364 * Except in oldaskconfig mode, we show only menus that
365 * contain new symbols.
366 */
367 if (input_mode != oldaskconfig && rootEntry != menu) {
368 check_conf(menu);
369 return;
370 }
371 /* fall through */
372 case P_COMMENT:
373 prompt = menu_get_prompt(menu);
374 if (prompt)
375 printf("%*c\n%*c %s\n%*c\n",
376 indent, '*',
377 indent, '*', prompt,
378 indent, '*');
379 default:
380 ;
381 }
382 }
383
384 if (!sym)
385 goto conf_childs;
386
387 if (sym_is_choice(sym)) {
388 conf_choice(menu);
389 if (sym->curr.tri != mod)
390 return;
391 goto conf_childs;
392 }
393
394 switch (sym->type) {
395 case S_INT:
396 case S_HEX:
397 case S_STRING:
398 conf_string(menu);
399 break;
400 default:
401 conf_sym(menu);
402 break;
403 }
404
405conf_childs:
406 if (sym)
407 indent += 2;
408 for (child = menu->list; child; child = child->next)
409 conf(child);
410 if (sym)
411 indent -= 2;
412}
413
414static void check_conf(struct menu *menu)
415{
416 struct symbol *sym;
417 struct menu *child;
418
419 if (!menu_is_visible(menu))
420 return;
421
422 sym = menu->sym;
423 if (sym && !sym_has_value(sym)) {
424 if (sym_is_changeable(sym) ||
425 (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
426 if (input_mode == listnewconfig) {
427 if (sym->name) {
428 const char *str;
429
430 if (sym->type == S_STRING) {
431 str = sym_get_string_value(sym);
432 str = sym_escape_string_value(str);
433 printf("%s%s=%s\n", CONFIG_, sym->name, str);
434 free((void *)str);
435 } else {
436 str = sym_get_string_value(sym);
437 printf("%s%s=%s\n", CONFIG_, sym->name, str);
438 }
439 }
440 } else if (input_mode == helpnewconfig) {
441 printf("-----\n");
442 print_help(menu);
443 printf("-----\n");
444
445 } else {
446 if (!conf_cnt++)
447 printf("*\n* Restart config...\n*\n");
448 rootEntry = menu_get_parent_menu(menu);
449 conf(rootEntry);
450 }
451 }
452 }
453
454 for (child = menu->list; child; child = child->next)
455 check_conf(child);
456}
457
458static struct option long_opts[] = {
459 {"oldaskconfig", no_argument, NULL, oldaskconfig},
460 {"oldconfig", no_argument, NULL, oldconfig},
461 {"syncconfig", no_argument, NULL, syncconfig},
462 {"defconfig", required_argument, NULL, defconfig},
463 {"savedefconfig", required_argument, NULL, savedefconfig},
464 {"allnoconfig", no_argument, NULL, allnoconfig},
465 {"allyesconfig", no_argument, NULL, allyesconfig},
466 {"allmodconfig", no_argument, NULL, allmodconfig},
467 {"alldefconfig", no_argument, NULL, alldefconfig},
468 {"randconfig", no_argument, NULL, randconfig},
469 {"listnewconfig", no_argument, NULL, listnewconfig},
470 {"helpnewconfig", no_argument, NULL, helpnewconfig},
471 {"olddefconfig", no_argument, NULL, olddefconfig},
472 {"yes2modconfig", no_argument, NULL, yes2modconfig},
473 {"mod2yesconfig", no_argument, NULL, mod2yesconfig},
474 {NULL, 0, NULL, 0}
475};
476
477static void conf_usage(const char *progname)
478{
479
480 printf("Usage: %s [-s] [option] <kconfig-file>\n", progname);
481 printf("[option] is _one_ of the following:\n");
482 printf(" --listnewconfig List new options\n");
483 printf(" --helpnewconfig List new options and help text\n");
484 printf(" --oldaskconfig Start a new configuration using a line-oriented program\n");
485 printf(" --oldconfig Update a configuration using a provided .config as base\n");
486 printf(" --syncconfig Similar to oldconfig but generates configuration in\n"
487 " include/{generated/,config/}\n");
488 printf(" --olddefconfig Same as oldconfig but sets new symbols to their default value\n");
489 printf(" --defconfig <file> New config with default defined in <file>\n");
490 printf(" --savedefconfig <file> Save the minimal current configuration to <file>\n");
491 printf(" --allnoconfig New config where all options are answered with no\n");
492 printf(" --allyesconfig New config where all options are answered with yes\n");
493 printf(" --allmodconfig New config where all options are answered with mod\n");
494 printf(" --alldefconfig New config with all symbols set to default\n");
495 printf(" --randconfig New config with random answer to all options\n");
496 printf(" --yes2modconfig Change answers from yes to mod if possible\n");
497 printf(" --mod2yesconfig Change answers from mod to yes if possible\n");
498}
499
500int main(int ac, char **av)
501{
502 const char *progname = av[0];
503 int opt;
504 const char *name, *defconfig_file = NULL /* gcc uninit */;
505 int no_conf_write = 0;
506
507 tty_stdio = isatty(0) && isatty(1);
508
509 while ((opt = getopt_long(ac, av, "s", long_opts, NULL)) != -1) {
510 if (opt == 's') {
511 conf_set_message_callback(NULL);
512 continue;
513 }
514 input_mode = (enum input_mode)opt;
515 switch (opt) {
516 case syncconfig:
517 /*
518 * syncconfig is invoked during the build stage.
519 * Suppress distracting "configuration written to ..."
520 */
521 conf_set_message_callback(NULL);
522 sync_kconfig = 1;
523 break;
524 case defconfig:
525 case savedefconfig:
526 defconfig_file = optarg;
527 break;
528 case randconfig:
529 {
530 struct timeval now;
531 unsigned int seed;
532 char *seed_env;
533
534 /*
535 * Use microseconds derived seed,
536 * compensate for systems where it may be zero
537 */
538 gettimeofday(&now, NULL);
539 seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
540
541 seed_env = getenv("KCONFIG_SEED");
542 if( seed_env && *seed_env ) {
543 char *endp;
544 int tmp = (int)strtol(seed_env, &endp, 0);
545 if (*endp == '\0') {
546 seed = tmp;
547 }
548 }
549 fprintf( stderr, "KCONFIG_SEED=0x%X\n", seed );
550 srand(seed);
551 break;
552 }
553 case oldaskconfig:
554 case oldconfig:
555 case allnoconfig:
556 case allyesconfig:
557 case allmodconfig:
558 case alldefconfig:
559 case listnewconfig:
560 case helpnewconfig:
561 case olddefconfig:
562 case yes2modconfig:
563 case mod2yesconfig:
564 break;
565 case '?':
566 conf_usage(progname);
567 exit(1);
568 break;
569 }
570 }
571 if (ac == optind) {
572 fprintf(stderr, "%s: Kconfig file missing\n", av[0]);
573 conf_usage(progname);
574 exit(1);
575 }
576 name = av[optind];
577 conf_parse(name);
578 //zconfdump(stdout);
579
580 switch (input_mode) {
581 case defconfig:
582 if (conf_read(defconfig_file)) {
583 fprintf(stderr,
584 "***\n"
585 "*** Can't find default configuration \"%s\"!\n"
586 "***\n",
587 defconfig_file);
588 exit(1);
589 }
590 break;
591 case savedefconfig:
592 case syncconfig:
593 case oldaskconfig:
594 case oldconfig:
595 case listnewconfig:
596 case helpnewconfig:
597 case olddefconfig:
598 case yes2modconfig:
599 case mod2yesconfig:
600 conf_read(NULL);
601 break;
602 case allnoconfig:
603 case allyesconfig:
604 case allmodconfig:
605 case alldefconfig:
606 case randconfig:
607 name = getenv("KCONFIG_ALLCONFIG");
608 if (!name)
609 break;
610 if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) {
611 if (conf_read_simple(name, S_DEF_USER)) {
612 fprintf(stderr,
613 "*** Can't read seed configuration \"%s\"!\n",
614 name);
615 exit(1);
616 }
617 break;
618 }
619 switch (input_mode) {
620 case allnoconfig: name = "allno.config"; break;
621 case allyesconfig: name = "allyes.config"; break;
622 case allmodconfig: name = "allmod.config"; break;
623 case alldefconfig: name = "alldef.config"; break;
624 case randconfig: name = "allrandom.config"; break;
625 default: break;
626 }
627 if (conf_read_simple(name, S_DEF_USER) &&
628 conf_read_simple("all.config", S_DEF_USER)) {
629 fprintf(stderr,
630 "*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n",
631 name);
632 exit(1);
633 }
634 break;
635 default:
636 break;
637 }
638
639 if (sync_kconfig) {
640 name = getenv("KCONFIG_NOSILENTUPDATE");
641 if (name && *name) {
642 if (conf_get_changed()) {
643 fprintf(stderr,
644 "\n*** The configuration requires explicit update.\n\n");
645 return 1;
646 }
647 no_conf_write = 1;
648 }
649 }
650
651 switch (input_mode) {
652 case allnoconfig:
653 conf_set_all_new_symbols(def_no);
654 break;
655 case allyesconfig:
656 conf_set_all_new_symbols(def_yes);
657 break;
658 case allmodconfig:
659 conf_set_all_new_symbols(def_mod);
660 break;
661 case alldefconfig:
662 conf_set_all_new_symbols(def_default);
663 break;
664 case randconfig:
665 /* Really nothing to do in this loop */
666 while (conf_set_all_new_symbols(def_random)) ;
667 break;
668 case defconfig:
669 conf_set_all_new_symbols(def_default);
670 break;
671 case savedefconfig:
672 break;
673 case yes2modconfig:
674 conf_rewrite_mod_or_yes(def_y2m);
675 break;
676 case mod2yesconfig:
677 conf_rewrite_mod_or_yes(def_m2y);
678 break;
679 case oldaskconfig:
680 rootEntry = &rootmenu;
681 conf(&rootmenu);
682 input_mode = oldconfig;
683 /* fall through */
684 case oldconfig:
685 case listnewconfig:
686 case helpnewconfig:
687 case syncconfig:
688 /* Update until a loop caused no more changes */
689 do {
690 conf_cnt = 0;
691 check_conf(&rootmenu);
692 } while (conf_cnt);
693 break;
694 case olddefconfig:
695 default:
696 break;
697 }
698
699 if (input_mode == savedefconfig) {
700 if (conf_write_defconfig(defconfig_file)) {
701 fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n",
702 defconfig_file);
703 return 1;
704 }
705 } else if (input_mode != listnewconfig && input_mode != helpnewconfig) {
706 if (!no_conf_write && conf_write(NULL)) {
707 fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
708 exit(1);
709 }
710
711 /*
712 * Create auto.conf if it does not exist.
713 * This prevents GNU Make 4.1 or older from emitting
714 * "include/config/auto.conf: No such file or directory"
715 * in the top-level Makefile
716 *
717 * syncconfig always creates or updates auto.conf because it is
718 * used during the build.
719 */
720 if (conf_write_autoconf(sync_kconfig) && sync_kconfig) {
721 fprintf(stderr,
722 "\n*** Error during sync of the configuration.\n\n");
723 return 1;
724 }
725 }
726 return 0;
727}