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 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 }; 38 static enum input_mode input_mode = oldaskconfig; 39 40 static int indent = 1; 41 static int tty_stdio; 42 static int sync_kconfig; 43 static int conf_cnt; 44 static char line[PATH_MAX]; 45 static struct menu *rootEntry; 46 47 static void print_help(struct menu *menu) 48 { 49 struct gstr help = str_new(); 50 51 menu_get_ext_help(menu, &help); 52 53 printf("\n%s\n", str_get(&help)); 54 str_free(&help); 55 } 56 57 static void strip(char *str) 58 { 59 char *p = str; 60 int l; 61 62 while ((isspace(*p))) 63 p++; 64 l = strlen(p); 65 if (p != str) 66 memmove(str, p, l + 1); 67 if (!l) 68 return; 69 p = str + l - 1; 70 while ((isspace(*p))) 71 *p-- = 0; 72 } 73 74 /* Helper function to facilitate fgets() by Jean Sacren. */ 75 static void xfgets(char *str, int size, FILE *in) 76 { 77 if (!fgets(str, size, in)) 78 fprintf(stderr, "\nError in reading or end of file.\n"); 79 80 if (!tty_stdio) 81 printf("%s", str); 82 } 83 84 static int conf_askvalue(struct symbol *sym, const char *def) 85 { 86 enum symbol_type type = sym_get_type(sym); 87 88 if (!sym_has_value(sym)) 89 printf("(NEW) "); 90 91 line[0] = '\n'; 92 line[1] = 0; 93 94 if (!sym_is_changeable(sym)) { 95 printf("%s\n", def); 96 line[0] = '\n'; 97 line[1] = 0; 98 return 0; 99 } 100 101 switch (input_mode) { 102 case oldconfig: 103 case syncconfig: 104 if (sym_has_value(sym)) { 105 printf("%s\n", def); 106 return 0; 107 } 108 /* fall through */ 109 case oldaskconfig: 110 fflush(stdout); 111 xfgets(line, sizeof(line), stdin); 112 return 1; 113 default: 114 break; 115 } 116 117 switch (type) { 118 case S_INT: 119 case S_HEX: 120 case S_STRING: 121 printf("%s\n", def); 122 return 1; 123 default: 124 ; 125 } 126 printf("%s", line); 127 return 1; 128 } 129 130 static int conf_string(struct menu *menu) 131 { 132 struct symbol *sym = menu->sym; 133 const char *def; 134 135 while (1) { 136 printf("%*s%s ", indent - 1, "", menu->prompt->text); 137 printf("(%s) ", sym->name); 138 def = sym_get_string_value(sym); 139 if (sym_get_string_value(sym)) 140 printf("[%s] ", def); 141 if (!conf_askvalue(sym, def)) 142 return 0; 143 switch (line[0]) { 144 case '\n': 145 break; 146 case '?': 147 /* print help */ 148 if (line[1] == '\n') { 149 print_help(menu); 150 def = NULL; 151 break; 152 } 153 /* fall through */ 154 default: 155 line[strlen(line)-1] = 0; 156 def = line; 157 } 158 if (def && sym_set_string_value(sym, def)) 159 return 0; 160 } 161 } 162 163 static int conf_sym(struct menu *menu) 164 { 165 struct symbol *sym = menu->sym; 166 tristate oldval, newval; 167 168 while (1) { 169 printf("%*s%s ", indent - 1, "", menu->prompt->text); 170 if (sym->name) 171 printf("(%s) ", sym->name); 172 putchar('['); 173 oldval = sym_get_tristate_value(sym); 174 switch (oldval) { 175 case no: 176 putchar('N'); 177 break; 178 case mod: 179 putchar('M'); 180 break; 181 case yes: 182 putchar('Y'); 183 break; 184 } 185 if (oldval != no && sym_tristate_within_range(sym, no)) 186 printf("/n"); 187 if (oldval != mod && sym_tristate_within_range(sym, mod)) 188 printf("/m"); 189 if (oldval != yes && sym_tristate_within_range(sym, yes)) 190 printf("/y"); 191 printf("/?] "); 192 if (!conf_askvalue(sym, sym_get_string_value(sym))) 193 return 0; 194 strip(line); 195 196 switch (line[0]) { 197 case 'n': 198 case 'N': 199 newval = no; 200 if (!line[1] || !strcmp(&line[1], "o")) 201 break; 202 continue; 203 case 'm': 204 case 'M': 205 newval = mod; 206 if (!line[1]) 207 break; 208 continue; 209 case 'y': 210 case 'Y': 211 newval = yes; 212 if (!line[1] || !strcmp(&line[1], "es")) 213 break; 214 continue; 215 case 0: 216 newval = oldval; 217 break; 218 case '?': 219 goto help; 220 default: 221 continue; 222 } 223 if (sym_set_tristate_value(sym, newval)) 224 return 0; 225 help: 226 print_help(menu); 227 } 228 } 229 230 static int conf_choice(struct menu *menu) 231 { 232 struct symbol *sym, *def_sym; 233 struct menu *child; 234 bool is_new; 235 236 sym = menu->sym; 237 is_new = !sym_has_value(sym); 238 if (sym_is_changeable(sym)) { 239 conf_sym(menu); 240 sym_calc_value(sym); 241 switch (sym_get_tristate_value(sym)) { 242 case no: 243 return 1; 244 case mod: 245 return 0; 246 case yes: 247 break; 248 } 249 } else { 250 switch (sym_get_tristate_value(sym)) { 251 case no: 252 return 1; 253 case mod: 254 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu)); 255 return 0; 256 case yes: 257 break; 258 } 259 } 260 261 while (1) { 262 int cnt, def; 263 264 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu)); 265 def_sym = sym_get_choice_value(sym); 266 cnt = def = 0; 267 line[0] = 0; 268 for (child = menu->list; child; child = child->next) { 269 if (!menu_is_visible(child)) 270 continue; 271 if (!child->sym) { 272 printf("%*c %s\n", indent, '*', menu_get_prompt(child)); 273 continue; 274 } 275 cnt++; 276 if (child->sym == def_sym) { 277 def = cnt; 278 printf("%*c", indent, '>'); 279 } else 280 printf("%*c", indent, ' '); 281 printf(" %d. %s", cnt, menu_get_prompt(child)); 282 if (child->sym->name) 283 printf(" (%s)", child->sym->name); 284 if (!sym_has_value(child->sym)) 285 printf(" (NEW)"); 286 printf("\n"); 287 } 288 printf("%*schoice", indent - 1, ""); 289 if (cnt == 1) { 290 printf("[1]: 1\n"); 291 goto conf_childs; 292 } 293 printf("[1-%d?]: ", cnt); 294 switch (input_mode) { 295 case oldconfig: 296 case syncconfig: 297 if (!is_new) { 298 cnt = def; 299 printf("%d\n", cnt); 300 break; 301 } 302 /* fall through */ 303 case oldaskconfig: 304 fflush(stdout); 305 xfgets(line, sizeof(line), stdin); 306 strip(line); 307 if (line[0] == '?') { 308 print_help(menu); 309 continue; 310 } 311 if (!line[0]) 312 cnt = def; 313 else if (isdigit(line[0])) 314 cnt = atoi(line); 315 else 316 continue; 317 break; 318 default: 319 break; 320 } 321 322 conf_childs: 323 for (child = menu->list; child; child = child->next) { 324 if (!child->sym || !menu_is_visible(child)) 325 continue; 326 if (!--cnt) 327 break; 328 } 329 if (!child) 330 continue; 331 if (line[0] && line[strlen(line) - 1] == '?') { 332 print_help(child); 333 continue; 334 } 335 sym_set_choice_value(sym, child->sym); 336 for (child = child->list; child; child = child->next) { 337 indent += 2; 338 conf(child); 339 indent -= 2; 340 } 341 return 1; 342 } 343 } 344 345 static void conf(struct menu *menu) 346 { 347 struct symbol *sym; 348 struct property *prop; 349 struct menu *child; 350 351 if (!menu_is_visible(menu)) 352 return; 353 354 sym = menu->sym; 355 prop = menu->prompt; 356 if (prop) { 357 const char *prompt; 358 359 switch (prop->type) { 360 case P_MENU: 361 /* 362 * Except in oldaskconfig mode, we show only menus that 363 * contain new symbols. 364 */ 365 if (input_mode != oldaskconfig && rootEntry != menu) { 366 check_conf(menu); 367 return; 368 } 369 /* fall through */ 370 case P_COMMENT: 371 prompt = menu_get_prompt(menu); 372 if (prompt) 373 printf("%*c\n%*c %s\n%*c\n", 374 indent, '*', 375 indent, '*', prompt, 376 indent, '*'); 377 default: 378 ; 379 } 380 } 381 382 if (!sym) 383 goto conf_childs; 384 385 if (sym_is_choice(sym)) { 386 conf_choice(menu); 387 if (sym->curr.tri != mod) 388 return; 389 goto conf_childs; 390 } 391 392 switch (sym->type) { 393 case S_INT: 394 case S_HEX: 395 case S_STRING: 396 conf_string(menu); 397 break; 398 default: 399 conf_sym(menu); 400 break; 401 } 402 403 conf_childs: 404 if (sym) 405 indent += 2; 406 for (child = menu->list; child; child = child->next) 407 conf(child); 408 if (sym) 409 indent -= 2; 410 } 411 412 static void check_conf(struct menu *menu) 413 { 414 struct symbol *sym; 415 struct menu *child; 416 417 if (!menu_is_visible(menu)) 418 return; 419 420 sym = menu->sym; 421 if (sym && !sym_has_value(sym)) { 422 if (sym_is_changeable(sym) || 423 (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) { 424 if (input_mode == listnewconfig) { 425 if (sym->name) { 426 const char *str; 427 428 if (sym->type == S_STRING) { 429 str = sym_get_string_value(sym); 430 str = sym_escape_string_value(str); 431 printf("%s%s=%s\n", CONFIG_, sym->name, str); 432 free((void *)str); 433 } else { 434 str = sym_get_string_value(sym); 435 printf("%s%s=%s\n", CONFIG_, sym->name, str); 436 } 437 } 438 } else if (input_mode == helpnewconfig) { 439 printf("-----\n"); 440 print_help(menu); 441 printf("-----\n"); 442 443 } else { 444 if (!conf_cnt++) 445 printf("*\n* Restart config...\n*\n"); 446 rootEntry = menu_get_parent_menu(menu); 447 conf(rootEntry); 448 } 449 } 450 } 451 452 for (child = menu->list; child; child = child->next) 453 check_conf(child); 454 } 455 456 static struct option long_opts[] = { 457 {"oldaskconfig", no_argument, NULL, oldaskconfig}, 458 {"oldconfig", no_argument, NULL, oldconfig}, 459 {"syncconfig", no_argument, NULL, syncconfig}, 460 {"defconfig", required_argument, NULL, defconfig}, 461 {"savedefconfig", required_argument, NULL, savedefconfig}, 462 {"allnoconfig", no_argument, NULL, allnoconfig}, 463 {"allyesconfig", no_argument, NULL, allyesconfig}, 464 {"allmodconfig", no_argument, NULL, allmodconfig}, 465 {"alldefconfig", no_argument, NULL, alldefconfig}, 466 {"randconfig", no_argument, NULL, randconfig}, 467 {"listnewconfig", no_argument, NULL, listnewconfig}, 468 {"helpnewconfig", no_argument, NULL, helpnewconfig}, 469 {"olddefconfig", no_argument, NULL, olddefconfig}, 470 {NULL, 0, NULL, 0} 471 }; 472 473 static void conf_usage(const char *progname) 474 { 475 476 printf("Usage: %s [-s] [option] <kconfig-file>\n", progname); 477 printf("[option] is _one_ of the following:\n"); 478 printf(" --listnewconfig List new options\n"); 479 printf(" --helpnewconfig List new options and help text\n"); 480 printf(" --oldaskconfig Start a new configuration using a line-oriented program\n"); 481 printf(" --oldconfig Update a configuration using a provided .config as base\n"); 482 printf(" --syncconfig Similar to oldconfig but generates configuration in\n" 483 " include/{generated/,config/}\n"); 484 printf(" --olddefconfig Same as oldconfig but sets new symbols to their default value\n"); 485 printf(" --defconfig <file> New config with default defined in <file>\n"); 486 printf(" --savedefconfig <file> Save the minimal current configuration to <file>\n"); 487 printf(" --allnoconfig New config where all options are answered with no\n"); 488 printf(" --allyesconfig New config where all options are answered with yes\n"); 489 printf(" --allmodconfig New config where all options are answered with mod\n"); 490 printf(" --alldefconfig New config with all symbols set to default\n"); 491 printf(" --randconfig New config with random answer to all options\n"); 492 } 493 494 int main(int ac, char **av) 495 { 496 const char *progname = av[0]; 497 int opt; 498 const char *name, *defconfig_file = NULL /* gcc uninit */; 499 int no_conf_write = 0; 500 501 tty_stdio = isatty(0) && isatty(1); 502 503 while ((opt = getopt_long(ac, av, "s", long_opts, NULL)) != -1) { 504 if (opt == 's') { 505 conf_set_message_callback(NULL); 506 continue; 507 } 508 input_mode = (enum input_mode)opt; 509 switch (opt) { 510 case syncconfig: 511 /* 512 * syncconfig is invoked during the build stage. 513 * Suppress distracting "configuration written to ..." 514 */ 515 conf_set_message_callback(NULL); 516 sync_kconfig = 1; 517 break; 518 case defconfig: 519 case savedefconfig: 520 defconfig_file = optarg; 521 break; 522 case randconfig: 523 { 524 struct timeval now; 525 unsigned int seed; 526 char *seed_env; 527 528 /* 529 * Use microseconds derived seed, 530 * compensate for systems where it may be zero 531 */ 532 gettimeofday(&now, NULL); 533 seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1)); 534 535 seed_env = getenv("KCONFIG_SEED"); 536 if( seed_env && *seed_env ) { 537 char *endp; 538 int tmp = (int)strtol(seed_env, &endp, 0); 539 if (*endp == '\0') { 540 seed = tmp; 541 } 542 } 543 fprintf( stderr, "KCONFIG_SEED=0x%X\n", seed ); 544 srand(seed); 545 break; 546 } 547 case oldaskconfig: 548 case oldconfig: 549 case allnoconfig: 550 case allyesconfig: 551 case allmodconfig: 552 case alldefconfig: 553 case listnewconfig: 554 case helpnewconfig: 555 case olddefconfig: 556 break; 557 case '?': 558 conf_usage(progname); 559 exit(1); 560 break; 561 } 562 } 563 if (ac == optind) { 564 fprintf(stderr, "%s: Kconfig file missing\n", av[0]); 565 conf_usage(progname); 566 exit(1); 567 } 568 name = av[optind]; 569 conf_parse(name); 570 //zconfdump(stdout); 571 572 switch (input_mode) { 573 case defconfig: 574 if (conf_read(defconfig_file)) { 575 fprintf(stderr, 576 "***\n" 577 "*** Can't find default configuration \"%s\"!\n" 578 "***\n", 579 defconfig_file); 580 exit(1); 581 } 582 break; 583 case savedefconfig: 584 case syncconfig: 585 case oldaskconfig: 586 case oldconfig: 587 case listnewconfig: 588 case helpnewconfig: 589 case olddefconfig: 590 conf_read(NULL); 591 break; 592 case allnoconfig: 593 case allyesconfig: 594 case allmodconfig: 595 case alldefconfig: 596 case randconfig: 597 name = getenv("KCONFIG_ALLCONFIG"); 598 if (!name) 599 break; 600 if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) { 601 if (conf_read_simple(name, S_DEF_USER)) { 602 fprintf(stderr, 603 "*** Can't read seed configuration \"%s\"!\n", 604 name); 605 exit(1); 606 } 607 break; 608 } 609 switch (input_mode) { 610 case allnoconfig: name = "allno.config"; break; 611 case allyesconfig: name = "allyes.config"; break; 612 case allmodconfig: name = "allmod.config"; break; 613 case alldefconfig: name = "alldef.config"; break; 614 case randconfig: name = "allrandom.config"; break; 615 default: break; 616 } 617 if (conf_read_simple(name, S_DEF_USER) && 618 conf_read_simple("all.config", S_DEF_USER)) { 619 fprintf(stderr, 620 "*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n", 621 name); 622 exit(1); 623 } 624 break; 625 default: 626 break; 627 } 628 629 if (sync_kconfig) { 630 name = getenv("KCONFIG_NOSILENTUPDATE"); 631 if (name && *name) { 632 if (conf_get_changed()) { 633 fprintf(stderr, 634 "\n*** The configuration requires explicit update.\n\n"); 635 return 1; 636 } 637 no_conf_write = 1; 638 } 639 } 640 641 switch (input_mode) { 642 case allnoconfig: 643 conf_set_all_new_symbols(def_no); 644 break; 645 case allyesconfig: 646 conf_set_all_new_symbols(def_yes); 647 break; 648 case allmodconfig: 649 conf_set_all_new_symbols(def_mod); 650 break; 651 case alldefconfig: 652 conf_set_all_new_symbols(def_default); 653 break; 654 case randconfig: 655 /* Really nothing to do in this loop */ 656 while (conf_set_all_new_symbols(def_random)) ; 657 break; 658 case defconfig: 659 conf_set_all_new_symbols(def_default); 660 break; 661 case savedefconfig: 662 break; 663 case oldaskconfig: 664 rootEntry = &rootmenu; 665 conf(&rootmenu); 666 input_mode = oldconfig; 667 /* fall through */ 668 case oldconfig: 669 case listnewconfig: 670 case helpnewconfig: 671 case syncconfig: 672 /* Update until a loop caused no more changes */ 673 do { 674 conf_cnt = 0; 675 check_conf(&rootmenu); 676 } while (conf_cnt); 677 break; 678 case olddefconfig: 679 default: 680 break; 681 } 682 683 if (input_mode == savedefconfig) { 684 if (conf_write_defconfig(defconfig_file)) { 685 fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n", 686 defconfig_file); 687 return 1; 688 } 689 } else if (input_mode != listnewconfig && input_mode != helpnewconfig) { 690 if (!no_conf_write && conf_write(NULL)) { 691 fprintf(stderr, "\n*** Error during writing of the configuration.\n\n"); 692 exit(1); 693 } 694 695 /* 696 * Create auto.conf if it does not exist. 697 * This prevents GNU Make 4.1 or older from emitting 698 * "include/config/auto.conf: No such file or directory" 699 * in the top-level Makefile 700 * 701 * syncconfig always creates or updates auto.conf because it is 702 * used during the build. 703 */ 704 if (conf_write_autoconf(sync_kconfig) && sync_kconfig) { 705 fprintf(stderr, 706 "\n*** Error during sync of the configuration.\n\n"); 707 return 1; 708 } 709 } 710 return 0; 711 } 712