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 }; 39 static enum input_mode input_mode = oldaskconfig; 40 static int input_mode_opt; 41 static int indent = 1; 42 static int tty_stdio; 43 static int sync_kconfig; 44 static int conf_cnt; 45 static char line[PATH_MAX]; 46 static struct menu *rootEntry; 47 48 static 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 58 static 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. */ 76 static 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 85 static 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 } 114 115 static 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 } 161 162 enum 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 }; 171 172 static 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 } 304 305 static 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 } 319 320 static 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 } 351 352 static 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 } 384 385 static 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; 447 help: 448 print_help(menu); 449 } 450 } 451 452 static 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 } 566 567 static 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 } 624 625 conf_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 } 633 634 static 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 } 680 681 static 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 }; 701 702 static 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 } 729 730 int 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 } 930