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 * Tristate printer 544 * 545 * This printer is used when generating the `include/config/tristate.conf' file. 546 */ 547 static void 548 tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) 549 { 550 551 if (sym->type == S_TRISTATE && *value != 'n') 552 fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value)); 553 } 554 555 static struct conf_printer tristate_printer_cb = 556 { 557 .print_symbol = tristate_print_symbol, 558 .print_comment = kconfig_print_comment, 559 }; 560 561 static void conf_write_symbol(FILE *fp, struct symbol *sym, 562 struct conf_printer *printer, void *printer_arg) 563 { 564 const char *str; 565 566 switch (sym->type) { 567 case S_OTHER: 568 case S_UNKNOWN: 569 break; 570 case S_STRING: 571 str = sym_get_string_value(sym); 572 str = sym_escape_string_value(str); 573 printer->print_symbol(fp, sym, str, printer_arg); 574 free((void *)str); 575 break; 576 default: 577 str = sym_get_string_value(sym); 578 printer->print_symbol(fp, sym, str, printer_arg); 579 } 580 } 581 582 static void 583 conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg) 584 { 585 char buf[256]; 586 587 snprintf(buf, sizeof(buf), 588 "\n" 589 "Automatically generated file; DO NOT EDIT.\n" 590 "%s\n", 591 rootmenu.prompt->text); 592 593 printer->print_comment(fp, buf, printer_arg); 594 } 595 596 /* 597 * Write out a minimal config. 598 * All values that has default values are skipped as this is redundant. 599 */ 600 int conf_write_defconfig(const char *filename) 601 { 602 struct symbol *sym; 603 struct menu *menu; 604 FILE *out; 605 606 out = fopen(filename, "w"); 607 if (!out) 608 return 1; 609 610 sym_clear_all_valid(); 611 612 /* Traverse all menus to find all relevant symbols */ 613 menu = rootmenu.list; 614 615 while (menu != NULL) 616 { 617 sym = menu->sym; 618 if (sym == NULL) { 619 if (!menu_is_visible(menu)) 620 goto next_menu; 621 } else if (!sym_is_choice(sym)) { 622 sym_calc_value(sym); 623 if (!(sym->flags & SYMBOL_WRITE)) 624 goto next_menu; 625 sym->flags &= ~SYMBOL_WRITE; 626 /* If we cannot change the symbol - skip */ 627 if (!sym_is_changable(sym)) 628 goto next_menu; 629 /* If symbol equals to default value - skip */ 630 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0) 631 goto next_menu; 632 633 /* 634 * If symbol is a choice value and equals to the 635 * default for a choice - skip. 636 * But only if value is bool and equal to "y" and 637 * choice is not "optional". 638 * (If choice is "optional" then all values can be "n") 639 */ 640 if (sym_is_choice_value(sym)) { 641 struct symbol *cs; 642 struct symbol *ds; 643 644 cs = prop_get_symbol(sym_get_choice_prop(sym)); 645 ds = sym_choice_default(cs); 646 if (!sym_is_optional(cs) && sym == ds) { 647 if ((sym->type == S_BOOLEAN) && 648 sym_get_tristate_value(sym) == yes) 649 goto next_menu; 650 } 651 } 652 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL); 653 } 654 next_menu: 655 if (menu->list != NULL) { 656 menu = menu->list; 657 } 658 else if (menu->next != NULL) { 659 menu = menu->next; 660 } else { 661 while ((menu = menu->parent)) { 662 if (menu->next != NULL) { 663 menu = menu->next; 664 break; 665 } 666 } 667 } 668 } 669 fclose(out); 670 return 0; 671 } 672 673 int conf_write(const char *name) 674 { 675 FILE *out; 676 struct symbol *sym; 677 struct menu *menu; 678 const char *basename; 679 const char *str; 680 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1]; 681 char *env; 682 683 dirname[0] = 0; 684 if (name && name[0]) { 685 struct stat st; 686 char *slash; 687 688 if (!stat(name, &st) && S_ISDIR(st.st_mode)) { 689 strcpy(dirname, name); 690 strcat(dirname, "/"); 691 basename = conf_get_configname(); 692 } else if ((slash = strrchr(name, '/'))) { 693 int size = slash - name + 1; 694 memcpy(dirname, name, size); 695 dirname[size] = 0; 696 if (slash[1]) 697 basename = slash + 1; 698 else 699 basename = conf_get_configname(); 700 } else 701 basename = name; 702 } else 703 basename = conf_get_configname(); 704 705 sprintf(newname, "%s%s", dirname, basename); 706 env = getenv("KCONFIG_OVERWRITECONFIG"); 707 if (!env || !*env) { 708 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid()); 709 out = fopen(tmpname, "w"); 710 } else { 711 *tmpname = 0; 712 out = fopen(newname, "w"); 713 } 714 if (!out) 715 return 1; 716 717 conf_write_heading(out, &kconfig_printer_cb, NULL); 718 719 if (!conf_get_changed()) 720 sym_clear_all_valid(); 721 722 menu = rootmenu.list; 723 while (menu) { 724 sym = menu->sym; 725 if (!sym) { 726 if (!menu_is_visible(menu)) 727 goto next; 728 str = menu_get_prompt(menu); 729 fprintf(out, "\n" 730 "#\n" 731 "# %s\n" 732 "#\n", str); 733 } else if (!(sym->flags & SYMBOL_CHOICE)) { 734 sym_calc_value(sym); 735 if (!(sym->flags & SYMBOL_WRITE)) 736 goto next; 737 sym->flags &= ~SYMBOL_WRITE; 738 739 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL); 740 } 741 742 next: 743 if (menu->list) { 744 menu = menu->list; 745 continue; 746 } 747 if (menu->next) 748 menu = menu->next; 749 else while ((menu = menu->parent)) { 750 if (menu->next) { 751 menu = menu->next; 752 break; 753 } 754 } 755 } 756 fclose(out); 757 758 if (*tmpname) { 759 strcat(dirname, basename); 760 strcat(dirname, ".old"); 761 rename(newname, dirname); 762 if (rename(tmpname, newname)) 763 return 1; 764 } 765 766 conf_message(_("configuration written to %s"), newname); 767 768 sym_set_change_count(0); 769 770 return 0; 771 } 772 773 static int conf_split_config(void) 774 { 775 const char *name; 776 char path[PATH_MAX+1]; 777 char *s, *d, c; 778 struct symbol *sym; 779 struct stat sb; 780 int res, i, fd; 781 782 name = conf_get_autoconfig_name(); 783 conf_read_simple(name, S_DEF_AUTO); 784 785 if (chdir("include/config")) 786 return 1; 787 788 res = 0; 789 for_all_symbols(i, sym) { 790 sym_calc_value(sym); 791 if ((sym->flags & SYMBOL_AUTO) || !sym->name) 792 continue; 793 if (sym->flags & SYMBOL_WRITE) { 794 if (sym->flags & SYMBOL_DEF_AUTO) { 795 /* 796 * symbol has old and new value, 797 * so compare them... 798 */ 799 switch (sym->type) { 800 case S_BOOLEAN: 801 case S_TRISTATE: 802 if (sym_get_tristate_value(sym) == 803 sym->def[S_DEF_AUTO].tri) 804 continue; 805 break; 806 case S_STRING: 807 case S_HEX: 808 case S_INT: 809 if (!strcmp(sym_get_string_value(sym), 810 sym->def[S_DEF_AUTO].val)) 811 continue; 812 break; 813 default: 814 break; 815 } 816 } else { 817 /* 818 * If there is no old value, only 'no' (unset) 819 * is allowed as new value. 820 */ 821 switch (sym->type) { 822 case S_BOOLEAN: 823 case S_TRISTATE: 824 if (sym_get_tristate_value(sym) == no) 825 continue; 826 break; 827 default: 828 break; 829 } 830 } 831 } else if (!(sym->flags & SYMBOL_DEF_AUTO)) 832 /* There is neither an old nor a new value. */ 833 continue; 834 /* else 835 * There is an old value, but no new value ('no' (unset) 836 * isn't saved in auto.conf, so the old value is always 837 * different from 'no'). 838 */ 839 840 /* Replace all '_' and append ".h" */ 841 s = sym->name; 842 d = path; 843 while ((c = *s++)) { 844 c = tolower(c); 845 *d++ = (c == '_') ? '/' : c; 846 } 847 strcpy(d, ".h"); 848 849 /* Assume directory path already exists. */ 850 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); 851 if (fd == -1) { 852 if (errno != ENOENT) { 853 res = 1; 854 break; 855 } 856 /* 857 * Create directory components, 858 * unless they exist already. 859 */ 860 d = path; 861 while ((d = strchr(d, '/'))) { 862 *d = 0; 863 if (stat(path, &sb) && mkdir(path, 0755)) { 864 res = 1; 865 goto out; 866 } 867 *d++ = '/'; 868 } 869 /* Try it again. */ 870 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); 871 if (fd == -1) { 872 res = 1; 873 break; 874 } 875 } 876 close(fd); 877 } 878 out: 879 if (chdir("../..")) 880 return 1; 881 882 return res; 883 } 884 885 int conf_write_autoconf(void) 886 { 887 struct symbol *sym; 888 const char *name; 889 FILE *out, *tristate, *out_h; 890 int i; 891 892 sym_clear_all_valid(); 893 894 file_write_dep("include/config/auto.conf.cmd"); 895 896 if (conf_split_config()) 897 return 1; 898 899 out = fopen(".tmpconfig", "w"); 900 if (!out) 901 return 1; 902 903 tristate = fopen(".tmpconfig_tristate", "w"); 904 if (!tristate) { 905 fclose(out); 906 return 1; 907 } 908 909 out_h = fopen(".tmpconfig.h", "w"); 910 if (!out_h) { 911 fclose(out); 912 fclose(tristate); 913 return 1; 914 } 915 916 conf_write_heading(out, &kconfig_printer_cb, NULL); 917 918 conf_write_heading(tristate, &tristate_printer_cb, NULL); 919 920 conf_write_heading(out_h, &header_printer_cb, NULL); 921 922 for_all_symbols(i, sym) { 923 sym_calc_value(sym); 924 if (!(sym->flags & SYMBOL_WRITE) || !sym->name) 925 continue; 926 927 /* write symbol to auto.conf, tristate and header files */ 928 conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1); 929 930 conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1); 931 932 conf_write_symbol(out_h, sym, &header_printer_cb, NULL); 933 } 934 fclose(out); 935 fclose(tristate); 936 fclose(out_h); 937 938 name = getenv("KCONFIG_AUTOHEADER"); 939 if (!name) 940 name = "include/generated/autoconf.h"; 941 if (rename(".tmpconfig.h", name)) 942 return 1; 943 name = getenv("KCONFIG_TRISTATE"); 944 if (!name) 945 name = "include/config/tristate.conf"; 946 if (rename(".tmpconfig_tristate", name)) 947 return 1; 948 name = conf_get_autoconfig_name(); 949 /* 950 * This must be the last step, kbuild has a dependency on auto.conf 951 * and this marks the successful completion of the previous steps. 952 */ 953 if (rename(".tmpconfig", name)) 954 return 1; 955 956 return 0; 957 } 958 959 static int sym_change_count; 960 static void (*conf_changed_callback)(void); 961 962 void sym_set_change_count(int count) 963 { 964 int _sym_change_count = sym_change_count; 965 sym_change_count = count; 966 if (conf_changed_callback && 967 (bool)_sym_change_count != (bool)count) 968 conf_changed_callback(); 969 } 970 971 void sym_add_change_count(int count) 972 { 973 sym_set_change_count(count + sym_change_count); 974 } 975 976 bool conf_get_changed(void) 977 { 978 return sym_change_count; 979 } 980 981 void conf_set_changed_callback(void (*fn)(void)) 982 { 983 conf_changed_callback = fn; 984 } 985 986 static void randomize_choice_values(struct symbol *csym) 987 { 988 struct property *prop; 989 struct symbol *sym; 990 struct expr *e; 991 int cnt, def; 992 993 /* 994 * If choice is mod then we may have more items selected 995 * and if no then no-one. 996 * In both cases stop. 997 */ 998 if (csym->curr.tri != yes) 999 return; 1000 1001 prop = sym_get_choice_prop(csym); 1002 1003 /* count entries in choice block */ 1004 cnt = 0; 1005 expr_list_for_each_sym(prop->expr, e, sym) 1006 cnt++; 1007 1008 /* 1009 * find a random value and set it to yes, 1010 * set the rest to no so we have only one set 1011 */ 1012 def = (rand() % cnt); 1013 1014 cnt = 0; 1015 expr_list_for_each_sym(prop->expr, e, sym) { 1016 if (def == cnt++) { 1017 sym->def[S_DEF_USER].tri = yes; 1018 csym->def[S_DEF_USER].val = sym; 1019 } 1020 else { 1021 sym->def[S_DEF_USER].tri = no; 1022 } 1023 } 1024 csym->flags |= SYMBOL_DEF_USER; 1025 /* clear VALID to get value calculated */ 1026 csym->flags &= ~(SYMBOL_VALID); 1027 } 1028 1029 static void set_all_choice_values(struct symbol *csym) 1030 { 1031 struct property *prop; 1032 struct symbol *sym; 1033 struct expr *e; 1034 1035 prop = sym_get_choice_prop(csym); 1036 1037 /* 1038 * Set all non-assinged choice values to no 1039 */ 1040 expr_list_for_each_sym(prop->expr, e, sym) { 1041 if (!sym_has_value(sym)) 1042 sym->def[S_DEF_USER].tri = no; 1043 } 1044 csym->flags |= SYMBOL_DEF_USER; 1045 /* clear VALID to get value calculated */ 1046 csym->flags &= ~(SYMBOL_VALID); 1047 } 1048 1049 void conf_set_all_new_symbols(enum conf_def_mode mode) 1050 { 1051 struct symbol *sym, *csym; 1052 int i, cnt; 1053 1054 for_all_symbols(i, sym) { 1055 if (sym_has_value(sym)) 1056 continue; 1057 switch (sym_get_type(sym)) { 1058 case S_BOOLEAN: 1059 case S_TRISTATE: 1060 switch (mode) { 1061 case def_yes: 1062 sym->def[S_DEF_USER].tri = yes; 1063 break; 1064 case def_mod: 1065 sym->def[S_DEF_USER].tri = mod; 1066 break; 1067 case def_no: 1068 sym->def[S_DEF_USER].tri = no; 1069 break; 1070 case def_random: 1071 cnt = sym_get_type(sym) == S_TRISTATE ? 3 : 2; 1072 sym->def[S_DEF_USER].tri = (tristate)(rand() % cnt); 1073 break; 1074 default: 1075 continue; 1076 } 1077 if (!(sym_is_choice(sym) && mode == def_random)) 1078 sym->flags |= SYMBOL_DEF_USER; 1079 break; 1080 default: 1081 break; 1082 } 1083 1084 } 1085 1086 sym_clear_all_valid(); 1087 1088 /* 1089 * We have different type of choice blocks. 1090 * If curr.tri equals to mod then we can select several 1091 * choice symbols in one block. 1092 * In this case we do nothing. 1093 * If curr.tri equals yes then only one symbol can be 1094 * selected in a choice block and we set it to yes, 1095 * and the rest to no. 1096 */ 1097 for_all_symbols(i, csym) { 1098 if (sym_has_value(csym) || !sym_is_choice(csym)) 1099 continue; 1100 1101 sym_calc_value(csym); 1102 if (mode == def_random) 1103 randomize_choice_values(csym); 1104 else 1105 set_all_choice_values(csym); 1106 } 1107 } 1108