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 19 static void conf(struct menu *menu); 20 static void check_conf(struct menu *menu); 21 22 enum 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 }; 40 static enum input_mode input_mode = oldaskconfig; 41 static int input_mode_opt; 42 static int indent = 1; 43 static int tty_stdio; 44 static int sync_kconfig; 45 static int conf_cnt; 46 static char line[PATH_MAX]; 47 static struct menu *rootEntry; 48 49 static 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 59 static 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. */ 77 static 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 86 static 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 } 115 116 static 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 } 162 163 enum conf_def_mode { 164 def_default, 165 def_yes, 166 def_mod, 167 def_no, 168 def_random 169 }; 170 171 static 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 } 303 304 static 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 } 316 317 static int conf_askvalue(struct symbol *sym, const char *def) 318 { 319 if (!sym_has_value(sym)) 320 printf("(NEW) "); 321 322 line[0] = '\n'; 323 line[1] = 0; 324 325 if (!sym_is_changeable(sym)) { 326 printf("%s\n", def); 327 line[0] = '\n'; 328 line[1] = 0; 329 return 0; 330 } 331 332 switch (input_mode) { 333 case oldconfig: 334 case syncconfig: 335 if (sym_has_value(sym)) { 336 printf("%s\n", def); 337 return 0; 338 } 339 /* fall through */ 340 default: 341 fflush(stdout); 342 xfgets(line, sizeof(line), stdin); 343 break; 344 } 345 346 return 1; 347 } 348 349 static int conf_string(struct menu *menu) 350 { 351 struct symbol *sym = menu->sym; 352 const char *def; 353 354 while (1) { 355 printf("%*s%s ", indent - 1, "", menu->prompt->text); 356 printf("(%s) ", sym->name); 357 def = sym_get_string_value(sym); 358 if (def) 359 printf("[%s] ", def); 360 if (!conf_askvalue(sym, def)) 361 return 0; 362 switch (line[0]) { 363 case '\n': 364 break; 365 case '?': 366 /* print help */ 367 if (line[1] == '\n') { 368 print_help(menu); 369 def = NULL; 370 break; 371 } 372 /* fall through */ 373 default: 374 line[strlen(line)-1] = 0; 375 def = line; 376 } 377 if (def && sym_set_string_value(sym, def)) 378 return 0; 379 } 380 } 381 382 static int conf_sym(struct menu *menu) 383 { 384 struct symbol *sym = menu->sym; 385 tristate oldval, newval; 386 387 while (1) { 388 printf("%*s%s ", indent - 1, "", menu->prompt->text); 389 if (sym->name) 390 printf("(%s) ", sym->name); 391 putchar('['); 392 oldval = sym_get_tristate_value(sym); 393 switch (oldval) { 394 case no: 395 putchar('N'); 396 break; 397 case mod: 398 putchar('M'); 399 break; 400 case yes: 401 putchar('Y'); 402 break; 403 } 404 if (oldval != no && sym_tristate_within_range(sym, no)) 405 printf("/n"); 406 if (oldval != mod && sym_tristate_within_range(sym, mod)) 407 printf("/m"); 408 if (oldval != yes && sym_tristate_within_range(sym, yes)) 409 printf("/y"); 410 printf("/?] "); 411 if (!conf_askvalue(sym, sym_get_string_value(sym))) 412 return 0; 413 strip(line); 414 415 switch (line[0]) { 416 case 'n': 417 case 'N': 418 newval = no; 419 if (!line[1] || !strcmp(&line[1], "o")) 420 break; 421 continue; 422 case 'm': 423 case 'M': 424 newval = mod; 425 if (!line[1]) 426 break; 427 continue; 428 case 'y': 429 case 'Y': 430 newval = yes; 431 if (!line[1] || !strcmp(&line[1], "es")) 432 break; 433 continue; 434 case 0: 435 newval = oldval; 436 break; 437 case '?': 438 goto help; 439 default: 440 continue; 441 } 442 if (sym_set_tristate_value(sym, newval)) 443 return 0; 444 help: 445 print_help(menu); 446 } 447 } 448 449 static 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_choice_value(sym, child->sym); 555 for (child = child->list; child; child = child->next) { 556 indent += 2; 557 conf(child); 558 indent -= 2; 559 } 560 return 1; 561 } 562 } 563 564 static 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 } 621 622 conf_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 } 630 631 static 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 } 666 667 static 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 }; 688 689 static 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 } 717 718 int 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 } 922