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 olddefconfig, 36 }; 37 static enum input_mode input_mode = oldaskconfig; 38 39 static int indent = 1; 40 static int tty_stdio; 41 static int sync_kconfig; 42 static int conf_cnt; 43 static char line[PATH_MAX]; 44 static struct menu *rootEntry; 45 46 static void print_help(struct menu *menu) 47 { 48 struct gstr help = str_new(); 49 50 menu_get_ext_help(menu, &help); 51 52 printf("\n%s\n", str_get(&help)); 53 str_free(&help); 54 } 55 56 static void strip(char *str) 57 { 58 char *p = str; 59 int l; 60 61 while ((isspace(*p))) 62 p++; 63 l = strlen(p); 64 if (p != str) 65 memmove(str, p, l + 1); 66 if (!l) 67 return; 68 p = str + l - 1; 69 while ((isspace(*p))) 70 *p-- = 0; 71 } 72 73 /* Helper function to facilitate fgets() by Jean Sacren. */ 74 static void xfgets(char *str, int size, FILE *in) 75 { 76 if (!fgets(str, size, in)) 77 fprintf(stderr, "\nError in reading or end of file.\n"); 78 79 if (!tty_stdio) 80 printf("%s", str); 81 } 82 83 static int conf_askvalue(struct symbol *sym, const char *def) 84 { 85 enum symbol_type type = sym_get_type(sym); 86 87 if (!sym_has_value(sym)) 88 printf("(NEW) "); 89 90 line[0] = '\n'; 91 line[1] = 0; 92 93 if (!sym_is_changable(sym)) { 94 printf("%s\n", def); 95 line[0] = '\n'; 96 line[1] = 0; 97 return 0; 98 } 99 100 switch (input_mode) { 101 case oldconfig: 102 case syncconfig: 103 if (sym_has_value(sym)) { 104 printf("%s\n", def); 105 return 0; 106 } 107 /* fall through */ 108 case oldaskconfig: 109 fflush(stdout); 110 xfgets(line, sizeof(line), stdin); 111 return 1; 112 default: 113 break; 114 } 115 116 switch (type) { 117 case S_INT: 118 case S_HEX: 119 case S_STRING: 120 printf("%s\n", def); 121 return 1; 122 default: 123 ; 124 } 125 printf("%s", line); 126 return 1; 127 } 128 129 static int conf_string(struct menu *menu) 130 { 131 struct symbol *sym = menu->sym; 132 const char *def; 133 134 while (1) { 135 printf("%*s%s ", indent - 1, "", menu->prompt->text); 136 printf("(%s) ", sym->name); 137 def = sym_get_string_value(sym); 138 if (sym_get_string_value(sym)) 139 printf("[%s] ", def); 140 if (!conf_askvalue(sym, def)) 141 return 0; 142 switch (line[0]) { 143 case '\n': 144 break; 145 case '?': 146 /* print help */ 147 if (line[1] == '\n') { 148 print_help(menu); 149 def = NULL; 150 break; 151 } 152 /* fall through */ 153 default: 154 line[strlen(line)-1] = 0; 155 def = line; 156 } 157 if (def && sym_set_string_value(sym, def)) 158 return 0; 159 } 160 } 161 162 static int conf_sym(struct menu *menu) 163 { 164 struct symbol *sym = menu->sym; 165 tristate oldval, newval; 166 167 while (1) { 168 printf("%*s%s ", indent - 1, "", menu->prompt->text); 169 if (sym->name) 170 printf("(%s) ", sym->name); 171 putchar('['); 172 oldval = sym_get_tristate_value(sym); 173 switch (oldval) { 174 case no: 175 putchar('N'); 176 break; 177 case mod: 178 putchar('M'); 179 break; 180 case yes: 181 putchar('Y'); 182 break; 183 } 184 if (oldval != no && sym_tristate_within_range(sym, no)) 185 printf("/n"); 186 if (oldval != mod && sym_tristate_within_range(sym, mod)) 187 printf("/m"); 188 if (oldval != yes && sym_tristate_within_range(sym, yes)) 189 printf("/y"); 190 printf("/?] "); 191 if (!conf_askvalue(sym, sym_get_string_value(sym))) 192 return 0; 193 strip(line); 194 195 switch (line[0]) { 196 case 'n': 197 case 'N': 198 newval = no; 199 if (!line[1] || !strcmp(&line[1], "o")) 200 break; 201 continue; 202 case 'm': 203 case 'M': 204 newval = mod; 205 if (!line[1]) 206 break; 207 continue; 208 case 'y': 209 case 'Y': 210 newval = yes; 211 if (!line[1] || !strcmp(&line[1], "es")) 212 break; 213 continue; 214 case 0: 215 newval = oldval; 216 break; 217 case '?': 218 goto help; 219 default: 220 continue; 221 } 222 if (sym_set_tristate_value(sym, newval)) 223 return 0; 224 help: 225 print_help(menu); 226 } 227 } 228 229 static int conf_choice(struct menu *menu) 230 { 231 struct symbol *sym, *def_sym; 232 struct menu *child; 233 bool is_new; 234 235 sym = menu->sym; 236 is_new = !sym_has_value(sym); 237 if (sym_is_changable(sym)) { 238 conf_sym(menu); 239 sym_calc_value(sym); 240 switch (sym_get_tristate_value(sym)) { 241 case no: 242 return 1; 243 case mod: 244 return 0; 245 case yes: 246 break; 247 } 248 } else { 249 switch (sym_get_tristate_value(sym)) { 250 case no: 251 return 1; 252 case mod: 253 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu)); 254 return 0; 255 case yes: 256 break; 257 } 258 } 259 260 while (1) { 261 int cnt, def; 262 263 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu)); 264 def_sym = sym_get_choice_value(sym); 265 cnt = def = 0; 266 line[0] = 0; 267 for (child = menu->list; child; child = child->next) { 268 if (!menu_is_visible(child)) 269 continue; 270 if (!child->sym) { 271 printf("%*c %s\n", indent, '*', menu_get_prompt(child)); 272 continue; 273 } 274 cnt++; 275 if (child->sym == def_sym) { 276 def = cnt; 277 printf("%*c", indent, '>'); 278 } else 279 printf("%*c", indent, ' '); 280 printf(" %d. %s", cnt, menu_get_prompt(child)); 281 if (child->sym->name) 282 printf(" (%s)", child->sym->name); 283 if (!sym_has_value(child->sym)) 284 printf(" (NEW)"); 285 printf("\n"); 286 } 287 printf("%*schoice", indent - 1, ""); 288 if (cnt == 1) { 289 printf("[1]: 1\n"); 290 goto conf_childs; 291 } 292 printf("[1-%d?]: ", cnt); 293 switch (input_mode) { 294 case oldconfig: 295 case syncconfig: 296 if (!is_new) { 297 cnt = def; 298 printf("%d\n", cnt); 299 break; 300 } 301 /* fall through */ 302 case oldaskconfig: 303 fflush(stdout); 304 xfgets(line, sizeof(line), stdin); 305 strip(line); 306 if (line[0] == '?') { 307 print_help(menu); 308 continue; 309 } 310 if (!line[0]) 311 cnt = def; 312 else if (isdigit(line[0])) 313 cnt = atoi(line); 314 else 315 continue; 316 break; 317 default: 318 break; 319 } 320 321 conf_childs: 322 for (child = menu->list; child; child = child->next) { 323 if (!child->sym || !menu_is_visible(child)) 324 continue; 325 if (!--cnt) 326 break; 327 } 328 if (!child) 329 continue; 330 if (line[0] && line[strlen(line) - 1] == '?') { 331 print_help(child); 332 continue; 333 } 334 sym_set_choice_value(sym, child->sym); 335 for (child = child->list; child; child = child->next) { 336 indent += 2; 337 conf(child); 338 indent -= 2; 339 } 340 return 1; 341 } 342 } 343 344 static void conf(struct menu *menu) 345 { 346 struct symbol *sym; 347 struct property *prop; 348 struct menu *child; 349 350 if (!menu_is_visible(menu)) 351 return; 352 353 sym = menu->sym; 354 prop = menu->prompt; 355 if (prop) { 356 const char *prompt; 357 358 switch (prop->type) { 359 case P_MENU: 360 /* 361 * Except in oldaskconfig mode, we show only menus that 362 * contain new symbols. 363 */ 364 if (input_mode != oldaskconfig && rootEntry != menu) { 365 check_conf(menu); 366 return; 367 } 368 /* fall through */ 369 case P_COMMENT: 370 prompt = menu_get_prompt(menu); 371 if (prompt) 372 printf("%*c\n%*c %s\n%*c\n", 373 indent, '*', 374 indent, '*', prompt, 375 indent, '*'); 376 default: 377 ; 378 } 379 } 380 381 if (!sym) 382 goto conf_childs; 383 384 if (sym_is_choice(sym)) { 385 conf_choice(menu); 386 if (sym->curr.tri != mod) 387 return; 388 goto conf_childs; 389 } 390 391 switch (sym->type) { 392 case S_INT: 393 case S_HEX: 394 case S_STRING: 395 conf_string(menu); 396 break; 397 default: 398 conf_sym(menu); 399 break; 400 } 401 402 conf_childs: 403 if (sym) 404 indent += 2; 405 for (child = menu->list; child; child = child->next) 406 conf(child); 407 if (sym) 408 indent -= 2; 409 } 410 411 static void check_conf(struct menu *menu) 412 { 413 struct symbol *sym; 414 struct menu *child; 415 416 if (!menu_is_visible(menu)) 417 return; 418 419 sym = menu->sym; 420 if (sym && !sym_has_value(sym)) { 421 if (sym_is_changable(sym) || 422 (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) { 423 if (input_mode == listnewconfig) { 424 if (sym->name) { 425 const char *str; 426 427 if (sym->type == S_STRING) { 428 str = sym_get_string_value(sym); 429 str = sym_escape_string_value(str); 430 printf("%s%s=%s\n", CONFIG_, sym->name, str); 431 free((void *)str); 432 } else { 433 str = sym_get_string_value(sym); 434 printf("%s%s=%s\n", CONFIG_, sym->name, str); 435 } 436 } 437 } else { 438 if (!conf_cnt++) 439 printf("*\n* Restart config...\n*\n"); 440 rootEntry = menu_get_parent_menu(menu); 441 conf(rootEntry); 442 } 443 } 444 } 445 446 for (child = menu->list; child; child = child->next) 447 check_conf(child); 448 } 449 450 static struct option long_opts[] = { 451 {"oldaskconfig", no_argument, NULL, oldaskconfig}, 452 {"oldconfig", no_argument, NULL, oldconfig}, 453 {"syncconfig", no_argument, NULL, syncconfig}, 454 {"defconfig", optional_argument, NULL, defconfig}, 455 {"savedefconfig", required_argument, NULL, savedefconfig}, 456 {"allnoconfig", no_argument, NULL, allnoconfig}, 457 {"allyesconfig", no_argument, NULL, allyesconfig}, 458 {"allmodconfig", no_argument, NULL, allmodconfig}, 459 {"alldefconfig", no_argument, NULL, alldefconfig}, 460 {"randconfig", no_argument, NULL, randconfig}, 461 {"listnewconfig", no_argument, NULL, listnewconfig}, 462 {"olddefconfig", no_argument, NULL, olddefconfig}, 463 {NULL, 0, NULL, 0} 464 }; 465 466 static void conf_usage(const char *progname) 467 { 468 469 printf("Usage: %s [-s] [option] <kconfig-file>\n", progname); 470 printf("[option] is _one_ of the following:\n"); 471 printf(" --listnewconfig List new options\n"); 472 printf(" --oldaskconfig Start a new configuration using a line-oriented program\n"); 473 printf(" --oldconfig Update a configuration using a provided .config as base\n"); 474 printf(" --syncconfig Similar to oldconfig but generates configuration in\n" 475 " include/{generated/,config/}\n"); 476 printf(" --olddefconfig Same as oldconfig but sets new symbols to their default value\n"); 477 printf(" --defconfig <file> New config with default defined in <file>\n"); 478 printf(" --savedefconfig <file> Save the minimal current configuration to <file>\n"); 479 printf(" --allnoconfig New config where all options are answered with no\n"); 480 printf(" --allyesconfig New config where all options are answered with yes\n"); 481 printf(" --allmodconfig New config where all options are answered with mod\n"); 482 printf(" --alldefconfig New config with all symbols set to default\n"); 483 printf(" --randconfig New config with random answer to all options\n"); 484 } 485 486 int main(int ac, char **av) 487 { 488 const char *progname = av[0]; 489 int opt; 490 const char *name, *defconfig_file = NULL /* gcc uninit */; 491 int no_conf_write = 0; 492 493 tty_stdio = isatty(0) && isatty(1); 494 495 while ((opt = getopt_long(ac, av, "s", long_opts, NULL)) != -1) { 496 if (opt == 's') { 497 conf_set_message_callback(NULL); 498 continue; 499 } 500 input_mode = (enum input_mode)opt; 501 switch (opt) { 502 case syncconfig: 503 /* 504 * syncconfig is invoked during the build stage. 505 * Suppress distracting "configuration written to ..." 506 */ 507 conf_set_message_callback(NULL); 508 sync_kconfig = 1; 509 break; 510 case defconfig: 511 case savedefconfig: 512 defconfig_file = optarg; 513 break; 514 case randconfig: 515 { 516 struct timeval now; 517 unsigned int seed; 518 char *seed_env; 519 520 /* 521 * Use microseconds derived seed, 522 * compensate for systems where it may be zero 523 */ 524 gettimeofday(&now, NULL); 525 seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1)); 526 527 seed_env = getenv("KCONFIG_SEED"); 528 if( seed_env && *seed_env ) { 529 char *endp; 530 int tmp = (int)strtol(seed_env, &endp, 0); 531 if (*endp == '\0') { 532 seed = tmp; 533 } 534 } 535 fprintf( stderr, "KCONFIG_SEED=0x%X\n", seed ); 536 srand(seed); 537 break; 538 } 539 case oldaskconfig: 540 case oldconfig: 541 case allnoconfig: 542 case allyesconfig: 543 case allmodconfig: 544 case alldefconfig: 545 case listnewconfig: 546 case olddefconfig: 547 break; 548 case '?': 549 conf_usage(progname); 550 exit(1); 551 break; 552 } 553 } 554 if (ac == optind) { 555 fprintf(stderr, "%s: Kconfig file missing\n", av[0]); 556 conf_usage(progname); 557 exit(1); 558 } 559 name = av[optind]; 560 conf_parse(name); 561 //zconfdump(stdout); 562 563 switch (input_mode) { 564 case defconfig: 565 if (!defconfig_file) 566 defconfig_file = conf_get_default_confname(); 567 if (conf_read(defconfig_file)) { 568 fprintf(stderr, 569 "***\n" 570 "*** Can't find default configuration \"%s\"!\n" 571 "***\n", 572 defconfig_file); 573 exit(1); 574 } 575 break; 576 case savedefconfig: 577 case syncconfig: 578 case oldaskconfig: 579 case oldconfig: 580 case listnewconfig: 581 case olddefconfig: 582 conf_read(NULL); 583 break; 584 case allnoconfig: 585 case allyesconfig: 586 case allmodconfig: 587 case alldefconfig: 588 case randconfig: 589 name = getenv("KCONFIG_ALLCONFIG"); 590 if (!name) 591 break; 592 if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) { 593 if (conf_read_simple(name, S_DEF_USER)) { 594 fprintf(stderr, 595 "*** Can't read seed configuration \"%s\"!\n", 596 name); 597 exit(1); 598 } 599 break; 600 } 601 switch (input_mode) { 602 case allnoconfig: name = "allno.config"; break; 603 case allyesconfig: name = "allyes.config"; break; 604 case allmodconfig: name = "allmod.config"; break; 605 case alldefconfig: name = "alldef.config"; break; 606 case randconfig: name = "allrandom.config"; break; 607 default: break; 608 } 609 if (conf_read_simple(name, S_DEF_USER) && 610 conf_read_simple("all.config", S_DEF_USER)) { 611 fprintf(stderr, 612 "*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n", 613 name); 614 exit(1); 615 } 616 break; 617 default: 618 break; 619 } 620 621 if (sync_kconfig) { 622 name = getenv("KCONFIG_NOSILENTUPDATE"); 623 if (name && *name) { 624 if (conf_get_changed()) { 625 fprintf(stderr, 626 "\n*** The configuration requires explicit update.\n\n"); 627 return 1; 628 } 629 no_conf_write = 1; 630 } 631 } 632 633 switch (input_mode) { 634 case allnoconfig: 635 conf_set_all_new_symbols(def_no); 636 break; 637 case allyesconfig: 638 conf_set_all_new_symbols(def_yes); 639 break; 640 case allmodconfig: 641 conf_set_all_new_symbols(def_mod); 642 break; 643 case alldefconfig: 644 conf_set_all_new_symbols(def_default); 645 break; 646 case randconfig: 647 /* Really nothing to do in this loop */ 648 while (conf_set_all_new_symbols(def_random)) ; 649 break; 650 case defconfig: 651 conf_set_all_new_symbols(def_default); 652 break; 653 case savedefconfig: 654 break; 655 case oldaskconfig: 656 rootEntry = &rootmenu; 657 conf(&rootmenu); 658 input_mode = oldconfig; 659 /* fall through */ 660 case oldconfig: 661 case listnewconfig: 662 case syncconfig: 663 /* Update until a loop caused no more changes */ 664 do { 665 conf_cnt = 0; 666 check_conf(&rootmenu); 667 } while (conf_cnt); 668 break; 669 case olddefconfig: 670 default: 671 break; 672 } 673 674 if (input_mode == savedefconfig) { 675 if (conf_write_defconfig(defconfig_file)) { 676 fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n", 677 defconfig_file); 678 return 1; 679 } 680 } else if (input_mode != listnewconfig) { 681 if (!no_conf_write && conf_write(NULL)) { 682 fprintf(stderr, "\n*** Error during writing of the configuration.\n\n"); 683 exit(1); 684 } 685 686 /* 687 * Create auto.conf if it does not exist. 688 * This prevents GNU Make 4.1 or older from emitting 689 * "include/config/auto.conf: No such file or directory" 690 * in the top-level Makefile 691 * 692 * syncconfig always creates or updates auto.conf because it is 693 * used during the build. 694 */ 695 if (conf_write_autoconf(sync_kconfig) && sync_kconfig) { 696 fprintf(stderr, 697 "\n*** Error during sync of the configuration.\n\n"); 698 return 1; 699 } 700 } 701 return 0; 702 } 703