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 20 static void conf(struct menu *menu); 21 static void check_conf(struct menu *menu); 22 23 enum 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 }; 41 static enum input_mode input_mode = oldaskconfig; 42 static int input_mode_opt; 43 static int indent = 1; 44 static int tty_stdio; 45 static int sync_kconfig; 46 static int conf_cnt; 47 static char line[PATH_MAX]; 48 static struct menu *rootEntry; 49 50 static 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 60 static 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. */ 78 static 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 87 static 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 } 116 117 /** 118 * randomize_choice_values - randomize choice block 119 * 120 * @choice: menu entry for the choice 121 */ 122 static void randomize_choice_values(struct menu *choice) 123 { 124 struct menu *menu; 125 int x; 126 int cnt = 0; 127 128 /* 129 * First, count the number of symbols to randomize. If sym_has_value() 130 * is true, it was specified by KCONFIG_ALLCONFIG. It needs to be 131 * respected. 132 */ 133 menu_for_each_sub_entry(menu, choice) { 134 struct symbol *sym = menu->sym; 135 136 if (sym && !sym_has_value(sym)) 137 cnt++; 138 } 139 140 while (cnt > 0) { 141 x = rand() % cnt; 142 143 menu_for_each_sub_entry(menu, choice) { 144 struct symbol *sym = menu->sym; 145 146 if (sym && !sym_has_value(sym)) 147 x--; 148 149 if (x < 0) { 150 sym->def[S_DEF_USER].tri = yes; 151 sym->flags |= SYMBOL_DEF_USER; 152 /* 153 * Move the selected item to the _tail_ because 154 * this needs to have a lower priority than the 155 * user input from KCONFIG_ALLCONFIG. 156 */ 157 list_move_tail(&sym->choice_link, 158 &choice->choice_members); 159 160 break; 161 } 162 } 163 cnt--; 164 } 165 } 166 167 enum conf_def_mode { 168 def_default, 169 def_yes, 170 def_mod, 171 def_no, 172 def_random 173 }; 174 175 static void conf_set_all_new_symbols(enum conf_def_mode mode) 176 { 177 struct menu *menu; 178 int cnt; 179 /* 180 * can't go as the default in switch-case below, otherwise gcc whines 181 * about -Wmaybe-uninitialized 182 */ 183 int pby = 50; /* probability of bool = y */ 184 int pty = 33; /* probability of tristate = y */ 185 int ptm = 33; /* probability of tristate = m */ 186 187 if (mode == def_random) { 188 int n, p[3]; 189 char *env = getenv("KCONFIG_PROBABILITY"); 190 191 n = 0; 192 while (env && *env) { 193 char *endp; 194 int tmp = strtol(env, &endp, 10); 195 196 if (tmp >= 0 && tmp <= 100) { 197 p[n++] = tmp; 198 } else { 199 errno = ERANGE; 200 perror("KCONFIG_PROBABILITY"); 201 exit(1); 202 } 203 env = (*endp == ':') ? endp + 1 : endp; 204 if (n >= 3) 205 break; 206 } 207 switch (n) { 208 case 1: 209 pby = p[0]; 210 ptm = pby / 2; 211 pty = pby - ptm; 212 break; 213 case 2: 214 pty = p[0]; 215 ptm = p[1]; 216 pby = pty + ptm; 217 break; 218 case 3: 219 pby = p[0]; 220 pty = p[1]; 221 ptm = p[2]; 222 break; 223 } 224 225 if (pty + ptm > 100) { 226 errno = ERANGE; 227 perror("KCONFIG_PROBABILITY"); 228 exit(1); 229 } 230 } 231 232 menu_for_each_entry(menu) { 233 struct symbol *sym = menu->sym; 234 tristate val; 235 236 if (!sym || !menu->prompt || sym_has_value(sym) || 237 (sym->type != S_BOOLEAN && sym->type != S_TRISTATE) || 238 sym_is_choice_value(sym)) 239 continue; 240 241 if (sym_is_choice(sym)) { 242 if (mode == def_random) 243 randomize_choice_values(menu); 244 continue; 245 } 246 247 switch (mode) { 248 case def_yes: 249 val = yes; 250 break; 251 case def_mod: 252 val = mod; 253 break; 254 case def_no: 255 val = no; 256 break; 257 case def_random: 258 val = no; 259 cnt = rand() % 100; 260 if (sym->type == S_TRISTATE) { 261 if (cnt < pty) 262 val = yes; 263 else if (cnt < pty + ptm) 264 val = mod; 265 } else if (cnt < pby) { 266 val = yes; 267 } 268 break; 269 default: 270 continue; 271 } 272 sym->def[S_DEF_USER].tri = val; 273 sym->flags |= SYMBOL_DEF_USER; 274 } 275 276 sym_clear_all_valid(); 277 } 278 279 static void conf_rewrite_tristates(tristate old_val, tristate new_val) 280 { 281 struct symbol *sym; 282 283 for_all_symbols(sym) { 284 if (sym_get_type(sym) == S_TRISTATE && 285 sym->def[S_DEF_USER].tri == old_val) 286 sym->def[S_DEF_USER].tri = new_val; 287 } 288 sym_clear_all_valid(); 289 } 290 291 static int conf_askvalue(struct symbol *sym, const char *def) 292 { 293 if (!sym_has_value(sym)) 294 printf("(NEW) "); 295 296 line[0] = '\n'; 297 line[1] = 0; 298 299 if (!sym_is_changeable(sym)) { 300 printf("%s\n", def); 301 line[0] = '\n'; 302 line[1] = 0; 303 return 0; 304 } 305 306 switch (input_mode) { 307 case oldconfig: 308 case syncconfig: 309 if (sym_has_value(sym)) { 310 printf("%s\n", def); 311 return 0; 312 } 313 /* fall through */ 314 default: 315 fflush(stdout); 316 xfgets(line, sizeof(line), stdin); 317 break; 318 } 319 320 return 1; 321 } 322 323 static int conf_string(struct menu *menu) 324 { 325 struct symbol *sym = menu->sym; 326 const char *def; 327 328 while (1) { 329 printf("%*s%s ", indent - 1, "", menu->prompt->text); 330 printf("(%s) ", sym->name); 331 def = sym_get_string_value(sym); 332 if (def) 333 printf("[%s] ", def); 334 if (!conf_askvalue(sym, def)) 335 return 0; 336 switch (line[0]) { 337 case '\n': 338 break; 339 case '?': 340 /* print help */ 341 if (line[1] == '\n') { 342 print_help(menu); 343 def = NULL; 344 break; 345 } 346 /* fall through */ 347 default: 348 line[strlen(line)-1] = 0; 349 def = line; 350 } 351 if (def && sym_set_string_value(sym, def)) 352 return 0; 353 } 354 } 355 356 static int conf_sym(struct menu *menu) 357 { 358 struct symbol *sym = menu->sym; 359 tristate oldval, newval; 360 361 while (1) { 362 printf("%*s%s ", indent - 1, "", menu->prompt->text); 363 if (sym->name) 364 printf("(%s) ", sym->name); 365 putchar('['); 366 oldval = sym_get_tristate_value(sym); 367 switch (oldval) { 368 case no: 369 putchar('N'); 370 break; 371 case mod: 372 putchar('M'); 373 break; 374 case yes: 375 putchar('Y'); 376 break; 377 } 378 if (oldval != no && sym_tristate_within_range(sym, no)) 379 printf("/n"); 380 if (oldval != mod && sym_tristate_within_range(sym, mod)) 381 printf("/m"); 382 if (oldval != yes && sym_tristate_within_range(sym, yes)) 383 printf("/y"); 384 printf("/?] "); 385 if (!conf_askvalue(sym, sym_get_string_value(sym))) 386 return 0; 387 strip(line); 388 389 switch (line[0]) { 390 case 'n': 391 case 'N': 392 newval = no; 393 if (!line[1] || !strcmp(&line[1], "o")) 394 break; 395 continue; 396 case 'm': 397 case 'M': 398 newval = mod; 399 if (!line[1]) 400 break; 401 continue; 402 case 'y': 403 case 'Y': 404 newval = yes; 405 if (!line[1] || !strcmp(&line[1], "es")) 406 break; 407 continue; 408 case 0: 409 newval = oldval; 410 break; 411 case '?': 412 goto help; 413 default: 414 continue; 415 } 416 if (sym_set_tristate_value(sym, newval)) 417 return 0; 418 help: 419 print_help(menu); 420 } 421 } 422 423 static void conf_choice(struct menu *menu) 424 { 425 struct symbol *def_sym; 426 struct menu *child; 427 bool is_new = false; 428 429 while (1) { 430 int cnt, def; 431 432 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu)); 433 def_sym = sym_calc_choice(menu); 434 cnt = def = 0; 435 line[0] = 0; 436 for (child = menu->list; child; child = child->next) { 437 if (!menu_is_visible(child)) 438 continue; 439 if (!child->sym) { 440 printf("%*c %s\n", indent, '*', menu_get_prompt(child)); 441 continue; 442 } 443 cnt++; 444 if (child->sym == def_sym) { 445 def = cnt; 446 printf("%*c", indent, '>'); 447 } else 448 printf("%*c", indent, ' '); 449 printf(" %d. %s (%s)", cnt, menu_get_prompt(child), 450 child->sym->name); 451 if (!sym_has_value(child->sym)) { 452 is_new = true; 453 printf(" (NEW)"); 454 } 455 printf("\n"); 456 } 457 printf("%*schoice", indent - 1, ""); 458 if (cnt == 1) { 459 printf("[1]: 1\n"); 460 goto conf_childs; 461 } 462 printf("[1-%d?]: ", cnt); 463 switch (input_mode) { 464 case oldconfig: 465 case syncconfig: 466 if (!is_new) { 467 cnt = def; 468 printf("%d\n", cnt); 469 break; 470 } 471 /* fall through */ 472 case oldaskconfig: 473 fflush(stdout); 474 xfgets(line, sizeof(line), stdin); 475 strip(line); 476 if (line[0] == '?') { 477 print_help(menu); 478 continue; 479 } 480 if (!line[0]) 481 cnt = def; 482 else if (isdigit(line[0])) 483 cnt = atoi(line); 484 else 485 continue; 486 break; 487 default: 488 break; 489 } 490 491 conf_childs: 492 for (child = menu->list; child; child = child->next) { 493 if (!child->sym || !menu_is_visible(child)) 494 continue; 495 if (!--cnt) 496 break; 497 } 498 if (!child) 499 continue; 500 if (line[0] && line[strlen(line) - 1] == '?') { 501 print_help(child); 502 continue; 503 } 504 choice_set_value(menu, child->sym); 505 return; 506 } 507 } 508 509 static void conf(struct menu *menu) 510 { 511 struct symbol *sym; 512 struct property *prop; 513 struct menu *child; 514 515 if (!menu_is_visible(menu)) 516 return; 517 518 sym = menu->sym; 519 prop = menu->prompt; 520 if (prop) { 521 const char *prompt; 522 523 switch (prop->type) { 524 case P_MENU: 525 /* 526 * Except in oldaskconfig mode, we show only menus that 527 * contain new symbols. 528 */ 529 if (input_mode != oldaskconfig && rootEntry != menu) { 530 check_conf(menu); 531 return; 532 } 533 /* fall through */ 534 case P_COMMENT: 535 prompt = menu_get_prompt(menu); 536 if (prompt) 537 printf("%*c\n%*c %s\n%*c\n", 538 indent, '*', 539 indent, '*', prompt, 540 indent, '*'); 541 default: 542 ; 543 } 544 } 545 546 if (!sym) 547 goto conf_childs; 548 549 if (sym_is_choice(sym)) { 550 conf_choice(menu); 551 return; 552 } 553 554 switch (sym->type) { 555 case S_INT: 556 case S_HEX: 557 case S_STRING: 558 conf_string(menu); 559 break; 560 default: 561 conf_sym(menu); 562 break; 563 } 564 565 conf_childs: 566 if (sym) 567 indent += 2; 568 for (child = menu->list; child; child = child->next) 569 conf(child); 570 if (sym) 571 indent -= 2; 572 } 573 574 static void check_conf(struct menu *menu) 575 { 576 struct symbol *sym; 577 struct menu *child; 578 579 if (!menu_is_visible(menu)) 580 return; 581 582 sym = menu->sym; 583 if (sym && !sym_has_value(sym) && sym_is_changeable(sym)) { 584 switch (input_mode) { 585 case listnewconfig: 586 if (sym->name) 587 print_symbol_for_listconfig(sym); 588 break; 589 case helpnewconfig: 590 printf("-----\n"); 591 print_help(menu); 592 printf("-----\n"); 593 break; 594 default: 595 if (!conf_cnt++) 596 printf("*\n* Restart config...\n*\n"); 597 rootEntry = menu_get_parent_menu(menu); 598 conf(rootEntry); 599 break; 600 } 601 } 602 603 for (child = menu->list; child; child = child->next) 604 check_conf(child); 605 } 606 607 static const struct option long_opts[] = { 608 {"help", no_argument, NULL, 'h'}, 609 {"silent", no_argument, NULL, 's'}, 610 {"oldaskconfig", no_argument, &input_mode_opt, oldaskconfig}, 611 {"oldconfig", no_argument, &input_mode_opt, oldconfig}, 612 {"syncconfig", no_argument, &input_mode_opt, syncconfig}, 613 {"defconfig", required_argument, &input_mode_opt, defconfig}, 614 {"savedefconfig", required_argument, &input_mode_opt, savedefconfig}, 615 {"allnoconfig", no_argument, &input_mode_opt, allnoconfig}, 616 {"allyesconfig", no_argument, &input_mode_opt, allyesconfig}, 617 {"allmodconfig", no_argument, &input_mode_opt, allmodconfig}, 618 {"alldefconfig", no_argument, &input_mode_opt, alldefconfig}, 619 {"randconfig", no_argument, &input_mode_opt, randconfig}, 620 {"listnewconfig", no_argument, &input_mode_opt, listnewconfig}, 621 {"helpnewconfig", no_argument, &input_mode_opt, helpnewconfig}, 622 {"olddefconfig", no_argument, &input_mode_opt, olddefconfig}, 623 {"yes2modconfig", no_argument, &input_mode_opt, yes2modconfig}, 624 {"mod2yesconfig", no_argument, &input_mode_opt, mod2yesconfig}, 625 {"mod2noconfig", no_argument, &input_mode_opt, mod2noconfig}, 626 {NULL, 0, NULL, 0} 627 }; 628 629 static void conf_usage(const char *progname) 630 { 631 printf("Usage: %s [options] <kconfig-file>\n", progname); 632 printf("\n"); 633 printf("Generic options:\n"); 634 printf(" -h, --help Print this message and exit.\n"); 635 printf(" -s, --silent Do not print log.\n"); 636 printf("\n"); 637 printf("Mode options:\n"); 638 printf(" --listnewconfig List new options\n"); 639 printf(" --helpnewconfig List new options and help text\n"); 640 printf(" --oldaskconfig Start a new configuration using a line-oriented program\n"); 641 printf(" --oldconfig Update a configuration using a provided .config as base\n"); 642 printf(" --syncconfig Similar to oldconfig but generates configuration in\n" 643 " include/{generated/,config/}\n"); 644 printf(" --olddefconfig Same as oldconfig but sets new symbols to their default value\n"); 645 printf(" --defconfig <file> New config with default defined in <file>\n"); 646 printf(" --savedefconfig <file> Save the minimal current configuration to <file>\n"); 647 printf(" --allnoconfig New config where all options are answered with no\n"); 648 printf(" --allyesconfig New config where all options are answered with yes\n"); 649 printf(" --allmodconfig New config where all options are answered with mod\n"); 650 printf(" --alldefconfig New config with all symbols set to default\n"); 651 printf(" --randconfig New config with random answer to all options\n"); 652 printf(" --yes2modconfig Change answers from yes to mod if possible\n"); 653 printf(" --mod2yesconfig Change answers from mod to yes if possible\n"); 654 printf(" --mod2noconfig Change answers from mod to no if possible\n"); 655 printf(" (If none of the above is given, --oldaskconfig is the default)\n"); 656 } 657 658 int main(int ac, char **av) 659 { 660 const char *progname = av[0]; 661 int opt; 662 const char *name, *defconfig_file = NULL /* gcc uninit */; 663 int no_conf_write = 0; 664 665 tty_stdio = isatty(0) && isatty(1); 666 667 while ((opt = getopt_long(ac, av, "hs", long_opts, NULL)) != -1) { 668 switch (opt) { 669 case 'h': 670 conf_usage(progname); 671 exit(1); 672 break; 673 case 's': 674 conf_set_message_callback(NULL); 675 break; 676 case 0: 677 input_mode = input_mode_opt; 678 switch (input_mode) { 679 case syncconfig: 680 /* 681 * syncconfig is invoked during the build stage. 682 * Suppress distracting 683 * "configuration written to ..." 684 */ 685 conf_set_message_callback(NULL); 686 sync_kconfig = 1; 687 break; 688 case defconfig: 689 case savedefconfig: 690 defconfig_file = optarg; 691 break; 692 case randconfig: 693 set_randconfig_seed(); 694 break; 695 default: 696 break; 697 } 698 default: 699 break; 700 } 701 } 702 if (ac == optind) { 703 fprintf(stderr, "%s: Kconfig file missing\n", av[0]); 704 conf_usage(progname); 705 exit(1); 706 } 707 conf_parse(av[optind]); 708 //zconfdump(stdout); 709 710 switch (input_mode) { 711 case defconfig: 712 if (conf_read(defconfig_file)) { 713 fprintf(stderr, 714 "***\n" 715 "*** Can't find default configuration \"%s\"!\n" 716 "***\n", 717 defconfig_file); 718 exit(1); 719 } 720 break; 721 case savedefconfig: 722 case syncconfig: 723 case oldaskconfig: 724 case oldconfig: 725 case listnewconfig: 726 case helpnewconfig: 727 case olddefconfig: 728 case yes2modconfig: 729 case mod2yesconfig: 730 case mod2noconfig: 731 conf_read(NULL); 732 break; 733 case allnoconfig: 734 case allyesconfig: 735 case allmodconfig: 736 case alldefconfig: 737 case randconfig: 738 name = getenv("KCONFIG_ALLCONFIG"); 739 if (!name) 740 break; 741 if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) { 742 if (conf_read_simple(name, S_DEF_USER)) { 743 fprintf(stderr, 744 "*** Can't read seed configuration \"%s\"!\n", 745 name); 746 exit(1); 747 } 748 break; 749 } 750 switch (input_mode) { 751 case allnoconfig: name = "allno.config"; break; 752 case allyesconfig: name = "allyes.config"; break; 753 case allmodconfig: name = "allmod.config"; break; 754 case alldefconfig: name = "alldef.config"; break; 755 case randconfig: name = "allrandom.config"; break; 756 default: break; 757 } 758 if (conf_read_simple(name, S_DEF_USER) && 759 conf_read_simple("all.config", S_DEF_USER)) { 760 fprintf(stderr, 761 "*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n", 762 name); 763 exit(1); 764 } 765 break; 766 default: 767 break; 768 } 769 770 if (conf_errors()) 771 exit(1); 772 773 if (sync_kconfig) { 774 name = getenv("KCONFIG_NOSILENTUPDATE"); 775 if (name && *name) { 776 if (conf_get_changed()) { 777 fprintf(stderr, 778 "\n*** The configuration requires explicit update.\n\n"); 779 return 1; 780 } 781 no_conf_write = 1; 782 } 783 } 784 785 switch (input_mode) { 786 case allnoconfig: 787 conf_set_all_new_symbols(def_no); 788 break; 789 case allyesconfig: 790 conf_set_all_new_symbols(def_yes); 791 break; 792 case allmodconfig: 793 conf_set_all_new_symbols(def_mod); 794 break; 795 case alldefconfig: 796 conf_set_all_new_symbols(def_default); 797 break; 798 case randconfig: 799 conf_set_all_new_symbols(def_random); 800 break; 801 case defconfig: 802 conf_set_all_new_symbols(def_default); 803 break; 804 case savedefconfig: 805 break; 806 case yes2modconfig: 807 conf_rewrite_tristates(yes, mod); 808 break; 809 case mod2yesconfig: 810 conf_rewrite_tristates(mod, yes); 811 break; 812 case mod2noconfig: 813 conf_rewrite_tristates(mod, no); 814 break; 815 case oldaskconfig: 816 rootEntry = &rootmenu; 817 conf(&rootmenu); 818 input_mode = oldconfig; 819 /* fall through */ 820 case oldconfig: 821 case listnewconfig: 822 case helpnewconfig: 823 case syncconfig: 824 /* Update until a loop caused no more changes */ 825 do { 826 conf_cnt = 0; 827 check_conf(&rootmenu); 828 } while (conf_cnt); 829 break; 830 case olddefconfig: 831 default: 832 break; 833 } 834 835 if (sym_dep_errors()) 836 exit(1); 837 838 if (input_mode == savedefconfig) { 839 if (conf_write_defconfig(defconfig_file)) { 840 fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n", 841 defconfig_file); 842 return 1; 843 } 844 } else if (input_mode != listnewconfig && input_mode != helpnewconfig) { 845 if (!no_conf_write && conf_write(NULL)) { 846 fprintf(stderr, "\n*** Error during writing of the configuration.\n\n"); 847 exit(1); 848 } 849 850 /* 851 * Create auto.conf if it does not exist. 852 * This prevents GNU Make 4.1 or older from emitting 853 * "include/config/auto.conf: No such file or directory" 854 * in the top-level Makefile 855 * 856 * syncconfig always creates or updates auto.conf because it is 857 * used during the build. 858 */ 859 if (conf_write_autoconf(sync_kconfig) && sync_kconfig) { 860 fprintf(stderr, 861 "\n*** Error during sync of the configuration.\n\n"); 862 return 1; 863 } 864 } 865 return 0; 866 } 867