1 /* 2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org> 3 * Released under the terms of the GNU GPL v2.0. 4 */ 5 6 #include <sys/stat.h> 7 #include <ctype.h> 8 #include <errno.h> 9 #include <fcntl.h> 10 #include <stdarg.h> 11 #include <stdio.h> 12 #include <stdlib.h> 13 #include <string.h> 14 #include <time.h> 15 #include <unistd.h> 16 17 #include "lkc.h" 18 19 static void conf_warning(const char *fmt, ...) 20 __attribute__ ((format (printf, 1, 2))); 21 22 static void conf_message(const char *fmt, ...) 23 __attribute__ ((format (printf, 1, 2))); 24 25 static const char *conf_filename; 26 static int conf_lineno, conf_warnings, conf_unsaved; 27 28 const char conf_defname[] = "arch/$ARCH/defconfig"; 29 30 static void conf_warning(const char *fmt, ...) 31 { 32 va_list ap; 33 va_start(ap, fmt); 34 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno); 35 vfprintf(stderr, fmt, ap); 36 fprintf(stderr, "\n"); 37 va_end(ap); 38 conf_warnings++; 39 } 40 41 static void conf_default_message_callback(const char *fmt, va_list ap) 42 { 43 printf("#\n# "); 44 vprintf(fmt, ap); 45 printf("\n#\n"); 46 } 47 48 static void (*conf_message_callback) (const char *fmt, va_list ap) = 49 conf_default_message_callback; 50 void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap)) 51 { 52 conf_message_callback = fn; 53 } 54 55 static void conf_message(const char *fmt, ...) 56 { 57 va_list ap; 58 59 va_start(ap, fmt); 60 if (conf_message_callback) 61 conf_message_callback(fmt, ap); 62 } 63 64 const char *conf_get_configname(void) 65 { 66 char *name = getenv("KCONFIG_CONFIG"); 67 68 return name ? name : ".config"; 69 } 70 71 const char *conf_get_autoconfig_name(void) 72 { 73 char *name = getenv("KCONFIG_AUTOCONFIG"); 74 75 return name ? name : "include/config/auto.conf"; 76 } 77 78 static char *conf_expand_value(const char *in) 79 { 80 struct symbol *sym; 81 const char *src; 82 static char res_value[SYMBOL_MAXLENGTH]; 83 char *dst, name[SYMBOL_MAXLENGTH]; 84 85 res_value[0] = 0; 86 dst = name; 87 while ((src = strchr(in, '$'))) { 88 strncat(res_value, in, src - in); 89 src++; 90 dst = name; 91 while (isalnum(*src) || *src == '_') 92 *dst++ = *src++; 93 *dst = 0; 94 sym = sym_lookup(name, 0); 95 sym_calc_value(sym); 96 strcat(res_value, sym_get_string_value(sym)); 97 in = src; 98 } 99 strcat(res_value, in); 100 101 return res_value; 102 } 103 104 char *conf_get_default_confname(void) 105 { 106 struct stat buf; 107 static char fullname[PATH_MAX+1]; 108 char *env, *name; 109 110 name = conf_expand_value(conf_defname); 111 env = getenv(SRCTREE); 112 if (env) { 113 sprintf(fullname, "%s/%s", env, name); 114 if (!stat(fullname, &buf)) 115 return fullname; 116 } 117 return name; 118 } 119 120 static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p) 121 { 122 char *p2; 123 124 switch (sym->type) { 125 case S_TRISTATE: 126 if (p[0] == 'm') { 127 sym->def[def].tri = mod; 128 sym->flags |= def_flags; 129 break; 130 } 131 /* fall through */ 132 case S_BOOLEAN: 133 if (p[0] == 'y') { 134 sym->def[def].tri = yes; 135 sym->flags |= def_flags; 136 break; 137 } 138 if (p[0] == 'n') { 139 sym->def[def].tri = no; 140 sym->flags |= def_flags; 141 break; 142 } 143 conf_warning("symbol value '%s' invalid for %s", p, sym->name); 144 return 1; 145 case S_OTHER: 146 if (*p != '"') { 147 for (p2 = p; *p2 && !isspace(*p2); p2++) 148 ; 149 sym->type = S_STRING; 150 goto done; 151 } 152 /* fall through */ 153 case S_STRING: 154 if (*p++ != '"') 155 break; 156 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) { 157 if (*p2 == '"') { 158 *p2 = 0; 159 break; 160 } 161 memmove(p2, p2 + 1, strlen(p2)); 162 } 163 if (!p2) { 164 conf_warning("invalid string found"); 165 return 1; 166 } 167 /* fall through */ 168 case S_INT: 169 case S_HEX: 170 done: 171 if (sym_string_valid(sym, p)) { 172 sym->def[def].val = strdup(p); 173 sym->flags |= def_flags; 174 } else { 175 conf_warning("symbol value '%s' invalid for %s", p, sym->name); 176 return 1; 177 } 178 break; 179 default: 180 ; 181 } 182 return 0; 183 } 184 185 int conf_read_simple(const char *name, int def) 186 { 187 FILE *in = NULL; 188 char line[1024]; 189 char *p, *p2; 190 struct symbol *sym; 191 int i, def_flags; 192 193 if (name) { 194 in = zconf_fopen(name); 195 } else { 196 struct property *prop; 197 198 name = conf_get_configname(); 199 in = zconf_fopen(name); 200 if (in) 201 goto load; 202 sym_add_change_count(1); 203 if (!sym_defconfig_list) { 204 if (modules_sym) 205 sym_calc_value(modules_sym); 206 return 1; 207 } 208 209 for_all_defaults(sym_defconfig_list, prop) { 210 if (expr_calc_value(prop->visible.expr) == no || 211 prop->expr->type != E_SYMBOL) 212 continue; 213 name = conf_expand_value(prop->expr->left.sym->name); 214 in = zconf_fopen(name); 215 if (in) { 216 conf_message(_("using defaults found in %s"), 217 name); 218 goto load; 219 } 220 } 221 } 222 if (!in) 223 return 1; 224 225 load: 226 conf_filename = name; 227 conf_lineno = 0; 228 conf_warnings = 0; 229 conf_unsaved = 0; 230 231 def_flags = SYMBOL_DEF << def; 232 for_all_symbols(i, sym) { 233 sym->flags |= SYMBOL_CHANGED; 234 sym->flags &= ~(def_flags|SYMBOL_VALID); 235 if (sym_is_choice(sym)) 236 sym->flags |= def_flags; 237 switch (sym->type) { 238 case S_INT: 239 case S_HEX: 240 case S_STRING: 241 if (sym->def[def].val) 242 free(sym->def[def].val); 243 /* fall through */ 244 default: 245 sym->def[def].val = NULL; 246 sym->def[def].tri = no; 247 } 248 } 249 250 while (fgets(line, sizeof(line), in)) { 251 conf_lineno++; 252 sym = NULL; 253 if (line[0] == '#') { 254 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_))) 255 continue; 256 p = strchr(line + 2 + strlen(CONFIG_), ' '); 257 if (!p) 258 continue; 259 *p++ = 0; 260 if (strncmp(p, "is not set", 10)) 261 continue; 262 if (def == S_DEF_USER) { 263 sym = sym_find(line + 2 + strlen(CONFIG_)); 264 if (!sym) { 265 sym_add_change_count(1); 266 goto setsym; 267 } 268 } else { 269 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0); 270 if (sym->type == S_UNKNOWN) 271 sym->type = S_BOOLEAN; 272 } 273 if (sym->flags & def_flags) { 274 conf_warning("override: reassigning to symbol %s", sym->name); 275 } 276 switch (sym->type) { 277 case S_BOOLEAN: 278 case S_TRISTATE: 279 sym->def[def].tri = no; 280 sym->flags |= def_flags; 281 break; 282 default: 283 ; 284 } 285 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) { 286 p = strchr(line + strlen(CONFIG_), '='); 287 if (!p) 288 continue; 289 *p++ = 0; 290 p2 = strchr(p, '\n'); 291 if (p2) { 292 *p2-- = 0; 293 if (*p2 == '\r') 294 *p2 = 0; 295 } 296 if (def == S_DEF_USER) { 297 sym = sym_find(line + strlen(CONFIG_)); 298 if (!sym) { 299 sym_add_change_count(1); 300 goto setsym; 301 } 302 } else { 303 sym = sym_lookup(line + strlen(CONFIG_), 0); 304 if (sym->type == S_UNKNOWN) 305 sym->type = S_OTHER; 306 } 307 if (sym->flags & def_flags) { 308 conf_warning("override: reassigning to symbol %s", sym->name); 309 } 310 if (conf_set_sym_val(sym, def, def_flags, p)) 311 continue; 312 } else { 313 if (line[0] != '\r' && line[0] != '\n') 314 conf_warning("unexpected data"); 315 continue; 316 } 317 setsym: 318 if (sym && sym_is_choice_value(sym)) { 319 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); 320 switch (sym->def[def].tri) { 321 case no: 322 break; 323 case mod: 324 if (cs->def[def].tri == yes) { 325 conf_warning("%s creates inconsistent choice state", sym->name); 326 cs->flags &= ~def_flags; 327 } 328 break; 329 case yes: 330 if (cs->def[def].tri != no) 331 conf_warning("override: %s changes choice state", sym->name); 332 cs->def[def].val = sym; 333 break; 334 } 335 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri); 336 } 337 } 338 fclose(in); 339 340 if (modules_sym) 341 sym_calc_value(modules_sym); 342 return 0; 343 } 344 345 int conf_read(const char *name) 346 { 347 struct symbol *sym; 348 int i; 349 350 sym_set_change_count(0); 351 352 if (conf_read_simple(name, S_DEF_USER)) 353 return 1; 354 355 for_all_symbols(i, sym) { 356 sym_calc_value(sym); 357 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO)) 358 continue; 359 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) { 360 /* check that calculated value agrees with saved value */ 361 switch (sym->type) { 362 case S_BOOLEAN: 363 case S_TRISTATE: 364 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym)) 365 break; 366 if (!sym_is_choice(sym)) 367 continue; 368 /* fall through */ 369 default: 370 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val)) 371 continue; 372 break; 373 } 374 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE)) 375 /* no previous value and not saved */ 376 continue; 377 conf_unsaved++; 378 /* maybe print value in verbose mode... */ 379 } 380 381 for_all_symbols(i, sym) { 382 if (sym_has_value(sym) && !sym_is_choice_value(sym)) { 383 /* Reset values of generates values, so they'll appear 384 * as new, if they should become visible, but that 385 * doesn't quite work if the Kconfig and the saved 386 * configuration disagree. 387 */ 388 if (sym->visible == no && !conf_unsaved) 389 sym->flags &= ~SYMBOL_DEF_USER; 390 switch (sym->type) { 391 case S_STRING: 392 case S_INT: 393 case S_HEX: 394 /* Reset a string value if it's out of range */ 395 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val)) 396 break; 397 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER); 398 conf_unsaved++; 399 break; 400 default: 401 break; 402 } 403 } 404 } 405 406 sym_add_change_count(conf_warnings || conf_unsaved); 407 408 return 0; 409 } 410 411 /* 412 * Kconfig configuration printer 413 * 414 * This printer is used when generating the resulting configuration after 415 * kconfig invocation and `defconfig' files. Unset symbol might be omitted by 416 * passing a non-NULL argument to the printer. 417 * 418 */ 419 static void 420 kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) 421 { 422 423 switch (sym->type) { 424 case S_BOOLEAN: 425 case S_TRISTATE: 426 if (*value == 'n') { 427 bool skip_unset = (arg != NULL); 428 429 if (!skip_unset) 430 fprintf(fp, "# %s%s is not set\n", 431 CONFIG_, sym->name); 432 return; 433 } 434 break; 435 default: 436 break; 437 } 438 439 fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value); 440 } 441 442 static void 443 kconfig_print_comment(FILE *fp, const char *value, void *arg) 444 { 445 const char *p = value; 446 size_t l; 447 448 for (;;) { 449 l = strcspn(p, "\n"); 450 fprintf(fp, "#"); 451 if (l) { 452 fprintf(fp, " "); 453 xfwrite(p, l, 1, fp); 454 p += l; 455 } 456 fprintf(fp, "\n"); 457 if (*p++ == '\0') 458 break; 459 } 460 } 461 462 static struct conf_printer kconfig_printer_cb = 463 { 464 .print_symbol = kconfig_print_symbol, 465 .print_comment = kconfig_print_comment, 466 }; 467 468 /* 469 * Header printer 470 * 471 * This printer is used when generating the `include/generated/autoconf.h' file. 472 */ 473 static void 474 header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) 475 { 476 477 switch (sym->type) { 478 case S_BOOLEAN: 479 case S_TRISTATE: { 480 const char *suffix = ""; 481 482 switch (*value) { 483 case 'n': 484 break; 485 case 'm': 486 suffix = "_MODULE"; 487 /* fall through */ 488 default: 489 fprintf(fp, "#define %s%s%s 1\n", 490 CONFIG_, sym->name, suffix); 491 } 492 break; 493 } 494 case S_HEX: { 495 const char *prefix = ""; 496 497 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X')) 498 prefix = "0x"; 499 fprintf(fp, "#define %s%s %s%s\n", 500 CONFIG_, sym->name, prefix, value); 501 break; 502 } 503 case S_STRING: 504 case S_INT: 505 fprintf(fp, "#define %s%s %s\n", 506 CONFIG_, sym->name, value); 507 break; 508 default: 509 break; 510 } 511 512 } 513 514 static void 515 header_print_comment(FILE *fp, const char *value, void *arg) 516 { 517 const char *p = value; 518 size_t l; 519 520 fprintf(fp, "/*\n"); 521 for (;;) { 522 l = strcspn(p, "\n"); 523 fprintf(fp, " *"); 524 if (l) { 525 fprintf(fp, " "); 526 xfwrite(p, l, 1, fp); 527 p += l; 528 } 529 fprintf(fp, "\n"); 530 if (*p++ == '\0') 531 break; 532 } 533 fprintf(fp, " */\n"); 534 } 535 536 static struct conf_printer header_printer_cb = 537 { 538 .print_symbol = header_print_symbol, 539 .print_comment = header_print_comment, 540 }; 541 542 /* 543 * Generate the __enabled_CONFIG_* and __enabled_CONFIG_*_MODULE macros for 544 * use by the IS_{ENABLED,BUILTIN,MODULE} macros. The _MODULE variant is 545 * generated even for booleans so that the IS_ENABLED() macro works. 546 */ 547 static void 548 header_print__enabled_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) 549 { 550 551 switch (sym->type) { 552 case S_BOOLEAN: 553 case S_TRISTATE: { 554 fprintf(fp, "#define __enabled_" CONFIG_ "%s %d\n", 555 sym->name, (*value == 'y')); 556 fprintf(fp, "#define __enabled_" CONFIG_ "%s_MODULE %d\n", 557 sym->name, (*value == 'm')); 558 break; 559 } 560 default: 561 break; 562 } 563 } 564 565 static struct conf_printer header__enabled_printer_cb = 566 { 567 .print_symbol = header_print__enabled_symbol, 568 .print_comment = header_print_comment, 569 }; 570 571 /* 572 * Tristate printer 573 * 574 * This printer is used when generating the `include/config/tristate.conf' file. 575 */ 576 static void 577 tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) 578 { 579 580 if (sym->type == S_TRISTATE && *value != 'n') 581 fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value)); 582 } 583 584 static struct conf_printer tristate_printer_cb = 585 { 586 .print_symbol = tristate_print_symbol, 587 .print_comment = kconfig_print_comment, 588 }; 589 590 static void conf_write_symbol(FILE *fp, struct symbol *sym, 591 struct conf_printer *printer, void *printer_arg) 592 { 593 const char *str; 594 595 switch (sym->type) { 596 case S_OTHER: 597 case S_UNKNOWN: 598 break; 599 case S_STRING: 600 str = sym_get_string_value(sym); 601 str = sym_escape_string_value(str); 602 printer->print_symbol(fp, sym, str, printer_arg); 603 free((void *)str); 604 break; 605 default: 606 str = sym_get_string_value(sym); 607 printer->print_symbol(fp, sym, str, printer_arg); 608 } 609 } 610 611 static void 612 conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg) 613 { 614 char buf[256]; 615 616 snprintf(buf, sizeof(buf), 617 "\n" 618 "Automatically generated file; DO NOT EDIT.\n" 619 "%s\n", 620 rootmenu.prompt->text); 621 622 printer->print_comment(fp, buf, printer_arg); 623 } 624 625 /* 626 * Write out a minimal config. 627 * All values that has default values are skipped as this is redundant. 628 */ 629 int conf_write_defconfig(const char *filename) 630 { 631 struct symbol *sym; 632 struct menu *menu; 633 FILE *out; 634 635 out = fopen(filename, "w"); 636 if (!out) 637 return 1; 638 639 sym_clear_all_valid(); 640 641 /* Traverse all menus to find all relevant symbols */ 642 menu = rootmenu.list; 643 644 while (menu != NULL) 645 { 646 sym = menu->sym; 647 if (sym == NULL) { 648 if (!menu_is_visible(menu)) 649 goto next_menu; 650 } else if (!sym_is_choice(sym)) { 651 sym_calc_value(sym); 652 if (!(sym->flags & SYMBOL_WRITE)) 653 goto next_menu; 654 sym->flags &= ~SYMBOL_WRITE; 655 /* If we cannot change the symbol - skip */ 656 if (!sym_is_changable(sym)) 657 goto next_menu; 658 /* If symbol equals to default value - skip */ 659 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0) 660 goto next_menu; 661 662 /* 663 * If symbol is a choice value and equals to the 664 * default for a choice - skip. 665 * But only if value is bool and equal to "y" and 666 * choice is not "optional". 667 * (If choice is "optional" then all values can be "n") 668 */ 669 if (sym_is_choice_value(sym)) { 670 struct symbol *cs; 671 struct symbol *ds; 672 673 cs = prop_get_symbol(sym_get_choice_prop(sym)); 674 ds = sym_choice_default(cs); 675 if (!sym_is_optional(cs) && sym == ds) { 676 if ((sym->type == S_BOOLEAN) && 677 sym_get_tristate_value(sym) == yes) 678 goto next_menu; 679 } 680 } 681 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL); 682 } 683 next_menu: 684 if (menu->list != NULL) { 685 menu = menu->list; 686 } 687 else if (menu->next != NULL) { 688 menu = menu->next; 689 } else { 690 while ((menu = menu->parent)) { 691 if (menu->next != NULL) { 692 menu = menu->next; 693 break; 694 } 695 } 696 } 697 } 698 fclose(out); 699 return 0; 700 } 701 702 int conf_write(const char *name) 703 { 704 FILE *out; 705 struct symbol *sym; 706 struct menu *menu; 707 const char *basename; 708 const char *str; 709 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1]; 710 char *env; 711 712 dirname[0] = 0; 713 if (name && name[0]) { 714 struct stat st; 715 char *slash; 716 717 if (!stat(name, &st) && S_ISDIR(st.st_mode)) { 718 strcpy(dirname, name); 719 strcat(dirname, "/"); 720 basename = conf_get_configname(); 721 } else if ((slash = strrchr(name, '/'))) { 722 int size = slash - name + 1; 723 memcpy(dirname, name, size); 724 dirname[size] = 0; 725 if (slash[1]) 726 basename = slash + 1; 727 else 728 basename = conf_get_configname(); 729 } else 730 basename = name; 731 } else 732 basename = conf_get_configname(); 733 734 sprintf(newname, "%s%s", dirname, basename); 735 env = getenv("KCONFIG_OVERWRITECONFIG"); 736 if (!env || !*env) { 737 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid()); 738 out = fopen(tmpname, "w"); 739 } else { 740 *tmpname = 0; 741 out = fopen(newname, "w"); 742 } 743 if (!out) 744 return 1; 745 746 conf_write_heading(out, &kconfig_printer_cb, NULL); 747 748 if (!conf_get_changed()) 749 sym_clear_all_valid(); 750 751 menu = rootmenu.list; 752 while (menu) { 753 sym = menu->sym; 754 if (!sym) { 755 if (!menu_is_visible(menu)) 756 goto next; 757 str = menu_get_prompt(menu); 758 fprintf(out, "\n" 759 "#\n" 760 "# %s\n" 761 "#\n", str); 762 } else if (!(sym->flags & SYMBOL_CHOICE)) { 763 sym_calc_value(sym); 764 if (!(sym->flags & SYMBOL_WRITE)) 765 goto next; 766 sym->flags &= ~SYMBOL_WRITE; 767 768 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL); 769 } 770 771 next: 772 if (menu->list) { 773 menu = menu->list; 774 continue; 775 } 776 if (menu->next) 777 menu = menu->next; 778 else while ((menu = menu->parent)) { 779 if (menu->next) { 780 menu = menu->next; 781 break; 782 } 783 } 784 } 785 fclose(out); 786 787 if (*tmpname) { 788 strcat(dirname, basename); 789 strcat(dirname, ".old"); 790 rename(newname, dirname); 791 if (rename(tmpname, newname)) 792 return 1; 793 } 794 795 conf_message(_("configuration written to %s"), newname); 796 797 sym_set_change_count(0); 798 799 return 0; 800 } 801 802 static int conf_split_config(void) 803 { 804 const char *name; 805 char path[PATH_MAX+1]; 806 char *s, *d, c; 807 struct symbol *sym; 808 struct stat sb; 809 int res, i, fd; 810 811 name = conf_get_autoconfig_name(); 812 conf_read_simple(name, S_DEF_AUTO); 813 814 if (chdir("include/config")) 815 return 1; 816 817 res = 0; 818 for_all_symbols(i, sym) { 819 sym_calc_value(sym); 820 if ((sym->flags & SYMBOL_AUTO) || !sym->name) 821 continue; 822 if (sym->flags & SYMBOL_WRITE) { 823 if (sym->flags & SYMBOL_DEF_AUTO) { 824 /* 825 * symbol has old and new value, 826 * so compare them... 827 */ 828 switch (sym->type) { 829 case S_BOOLEAN: 830 case S_TRISTATE: 831 if (sym_get_tristate_value(sym) == 832 sym->def[S_DEF_AUTO].tri) 833 continue; 834 break; 835 case S_STRING: 836 case S_HEX: 837 case S_INT: 838 if (!strcmp(sym_get_string_value(sym), 839 sym->def[S_DEF_AUTO].val)) 840 continue; 841 break; 842 default: 843 break; 844 } 845 } else { 846 /* 847 * If there is no old value, only 'no' (unset) 848 * is allowed as new value. 849 */ 850 switch (sym->type) { 851 case S_BOOLEAN: 852 case S_TRISTATE: 853 if (sym_get_tristate_value(sym) == no) 854 continue; 855 break; 856 default: 857 break; 858 } 859 } 860 } else if (!(sym->flags & SYMBOL_DEF_AUTO)) 861 /* There is neither an old nor a new value. */ 862 continue; 863 /* else 864 * There is an old value, but no new value ('no' (unset) 865 * isn't saved in auto.conf, so the old value is always 866 * different from 'no'). 867 */ 868 869 /* Replace all '_' and append ".h" */ 870 s = sym->name; 871 d = path; 872 while ((c = *s++)) { 873 c = tolower(c); 874 *d++ = (c == '_') ? '/' : c; 875 } 876 strcpy(d, ".h"); 877 878 /* Assume directory path already exists. */ 879 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); 880 if (fd == -1) { 881 if (errno != ENOENT) { 882 res = 1; 883 break; 884 } 885 /* 886 * Create directory components, 887 * unless they exist already. 888 */ 889 d = path; 890 while ((d = strchr(d, '/'))) { 891 *d = 0; 892 if (stat(path, &sb) && mkdir(path, 0755)) { 893 res = 1; 894 goto out; 895 } 896 *d++ = '/'; 897 } 898 /* Try it again. */ 899 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); 900 if (fd == -1) { 901 res = 1; 902 break; 903 } 904 } 905 close(fd); 906 } 907 out: 908 if (chdir("../..")) 909 return 1; 910 911 return res; 912 } 913 914 int conf_write_autoconf(void) 915 { 916 struct symbol *sym; 917 const char *name; 918 FILE *out, *tristate, *out_h; 919 int i; 920 921 sym_clear_all_valid(); 922 923 file_write_dep("include/config/auto.conf.cmd"); 924 925 if (conf_split_config()) 926 return 1; 927 928 out = fopen(".tmpconfig", "w"); 929 if (!out) 930 return 1; 931 932 tristate = fopen(".tmpconfig_tristate", "w"); 933 if (!tristate) { 934 fclose(out); 935 return 1; 936 } 937 938 out_h = fopen(".tmpconfig.h", "w"); 939 if (!out_h) { 940 fclose(out); 941 fclose(tristate); 942 return 1; 943 } 944 945 conf_write_heading(out, &kconfig_printer_cb, NULL); 946 947 conf_write_heading(tristate, &tristate_printer_cb, NULL); 948 949 conf_write_heading(out_h, &header_printer_cb, NULL); 950 951 for_all_symbols(i, sym) { 952 if (!sym->name) 953 continue; 954 955 sym_calc_value(sym); 956 957 conf_write_symbol(out_h, sym, &header__enabled_printer_cb, NULL); 958 959 if (!(sym->flags & SYMBOL_WRITE)) 960 continue; 961 962 conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1); 963 964 conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1); 965 966 conf_write_symbol(out_h, sym, &header_printer_cb, NULL); 967 } 968 fclose(out); 969 fclose(tristate); 970 fclose(out_h); 971 972 name = getenv("KCONFIG_AUTOHEADER"); 973 if (!name) 974 name = "include/generated/autoconf.h"; 975 if (rename(".tmpconfig.h", name)) 976 return 1; 977 name = getenv("KCONFIG_TRISTATE"); 978 if (!name) 979 name = "include/config/tristate.conf"; 980 if (rename(".tmpconfig_tristate", name)) 981 return 1; 982 name = conf_get_autoconfig_name(); 983 /* 984 * This must be the last step, kbuild has a dependency on auto.conf 985 * and this marks the successful completion of the previous steps. 986 */ 987 if (rename(".tmpconfig", name)) 988 return 1; 989 990 return 0; 991 } 992 993 static int sym_change_count; 994 static void (*conf_changed_callback)(void); 995 996 void sym_set_change_count(int count) 997 { 998 int _sym_change_count = sym_change_count; 999 sym_change_count = count; 1000 if (conf_changed_callback && 1001 (bool)_sym_change_count != (bool)count) 1002 conf_changed_callback(); 1003 } 1004 1005 void sym_add_change_count(int count) 1006 { 1007 sym_set_change_count(count + sym_change_count); 1008 } 1009 1010 bool conf_get_changed(void) 1011 { 1012 return sym_change_count; 1013 } 1014 1015 void conf_set_changed_callback(void (*fn)(void)) 1016 { 1017 conf_changed_callback = fn; 1018 } 1019 1020 static void randomize_choice_values(struct symbol *csym) 1021 { 1022 struct property *prop; 1023 struct symbol *sym; 1024 struct expr *e; 1025 int cnt, def; 1026 1027 /* 1028 * If choice is mod then we may have more items selected 1029 * and if no then no-one. 1030 * In both cases stop. 1031 */ 1032 if (csym->curr.tri != yes) 1033 return; 1034 1035 prop = sym_get_choice_prop(csym); 1036 1037 /* count entries in choice block */ 1038 cnt = 0; 1039 expr_list_for_each_sym(prop->expr, e, sym) 1040 cnt++; 1041 1042 /* 1043 * find a random value and set it to yes, 1044 * set the rest to no so we have only one set 1045 */ 1046 def = (rand() % cnt); 1047 1048 cnt = 0; 1049 expr_list_for_each_sym(prop->expr, e, sym) { 1050 if (def == cnt++) { 1051 sym->def[S_DEF_USER].tri = yes; 1052 csym->def[S_DEF_USER].val = sym; 1053 } 1054 else { 1055 sym->def[S_DEF_USER].tri = no; 1056 } 1057 } 1058 csym->flags |= SYMBOL_DEF_USER; 1059 /* clear VALID to get value calculated */ 1060 csym->flags &= ~(SYMBOL_VALID); 1061 } 1062 1063 static void set_all_choice_values(struct symbol *csym) 1064 { 1065 struct property *prop; 1066 struct symbol *sym; 1067 struct expr *e; 1068 1069 prop = sym_get_choice_prop(csym); 1070 1071 /* 1072 * Set all non-assinged choice values to no 1073 */ 1074 expr_list_for_each_sym(prop->expr, e, sym) { 1075 if (!sym_has_value(sym)) 1076 sym->def[S_DEF_USER].tri = no; 1077 } 1078 csym->flags |= SYMBOL_DEF_USER; 1079 /* clear VALID to get value calculated */ 1080 csym->flags &= ~(SYMBOL_VALID); 1081 } 1082 1083 void conf_set_all_new_symbols(enum conf_def_mode mode) 1084 { 1085 struct symbol *sym, *csym; 1086 int i, cnt; 1087 1088 for_all_symbols(i, sym) { 1089 if (sym_has_value(sym)) 1090 continue; 1091 switch (sym_get_type(sym)) { 1092 case S_BOOLEAN: 1093 case S_TRISTATE: 1094 switch (mode) { 1095 case def_yes: 1096 sym->def[S_DEF_USER].tri = yes; 1097 break; 1098 case def_mod: 1099 sym->def[S_DEF_USER].tri = mod; 1100 break; 1101 case def_no: 1102 sym->def[S_DEF_USER].tri = no; 1103 break; 1104 case def_random: 1105 cnt = sym_get_type(sym) == S_TRISTATE ? 3 : 2; 1106 sym->def[S_DEF_USER].tri = (tristate)(rand() % cnt); 1107 break; 1108 default: 1109 continue; 1110 } 1111 if (!(sym_is_choice(sym) && mode == def_random)) 1112 sym->flags |= SYMBOL_DEF_USER; 1113 break; 1114 default: 1115 break; 1116 } 1117 1118 } 1119 1120 sym_clear_all_valid(); 1121 1122 /* 1123 * We have different type of choice blocks. 1124 * If curr.tri equals to mod then we can select several 1125 * choice symbols in one block. 1126 * In this case we do nothing. 1127 * If curr.tri equals yes then only one symbol can be 1128 * selected in a choice block and we set it to yes, 1129 * and the rest to no. 1130 */ 1131 for_all_symbols(i, csym) { 1132 if (sym_has_value(csym) || !sym_is_choice(csym)) 1133 continue; 1134 1135 sym_calc_value(csym); 1136 if (mode == def_random) 1137 randomize_choice_values(csym); 1138 else 1139 set_all_choice_values(csym); 1140 } 1141 } 1142