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 struct conf_printer { 20 void (*print_symbol)(FILE *, struct symbol *, const char *, void *); 21 void (*print_comment)(FILE *, const char *, void *); 22 }; 23 24 static void conf_warning(const char *fmt, ...) 25 __attribute__ ((format (printf, 1, 2))); 26 27 static void conf_message(const char *fmt, ...) 28 __attribute__ ((format (printf, 1, 2))); 29 30 static const char *conf_filename; 31 static int conf_lineno, conf_warnings, conf_unsaved; 32 33 const char conf_defname[] = "arch/$ARCH/defconfig"; 34 35 static void conf_warning(const char *fmt, ...) 36 { 37 va_list ap; 38 va_start(ap, fmt); 39 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno); 40 vfprintf(stderr, fmt, ap); 41 fprintf(stderr, "\n"); 42 va_end(ap); 43 conf_warnings++; 44 } 45 46 static void conf_default_message_callback(const char *fmt, va_list ap) 47 { 48 printf("#\n# "); 49 vprintf(fmt, ap); 50 printf("\n#\n"); 51 } 52 53 static void (*conf_message_callback) (const char *fmt, va_list ap) = 54 conf_default_message_callback; 55 void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap)) 56 { 57 conf_message_callback = fn; 58 } 59 60 static void conf_message(const char *fmt, ...) 61 { 62 va_list ap; 63 64 va_start(ap, fmt); 65 if (conf_message_callback) 66 conf_message_callback(fmt, ap); 67 va_end(ap); 68 } 69 70 const char *conf_get_configname(void) 71 { 72 char *name = getenv("KCONFIG_CONFIG"); 73 74 return name ? name : ".config"; 75 } 76 77 const char *conf_get_autoconfig_name(void) 78 { 79 char *name = getenv("KCONFIG_AUTOCONFIG"); 80 81 return name ? name : "include/config/auto.conf"; 82 } 83 84 static char *conf_expand_value(const char *in) 85 { 86 struct symbol *sym; 87 const char *src; 88 static char res_value[SYMBOL_MAXLENGTH]; 89 char *dst, name[SYMBOL_MAXLENGTH]; 90 91 res_value[0] = 0; 92 dst = name; 93 while ((src = strchr(in, '$'))) { 94 strncat(res_value, in, src - in); 95 src++; 96 dst = name; 97 while (isalnum(*src) || *src == '_') 98 *dst++ = *src++; 99 *dst = 0; 100 sym = sym_lookup(name, 0); 101 sym_calc_value(sym); 102 strcat(res_value, sym_get_string_value(sym)); 103 in = src; 104 } 105 strcat(res_value, in); 106 107 return res_value; 108 } 109 110 char *conf_get_default_confname(void) 111 { 112 struct stat buf; 113 static char fullname[PATH_MAX+1]; 114 char *env, *name; 115 116 name = conf_expand_value(conf_defname); 117 env = getenv(SRCTREE); 118 if (env) { 119 sprintf(fullname, "%s/%s", env, name); 120 if (!stat(fullname, &buf)) 121 return fullname; 122 } 123 return name; 124 } 125 126 static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p) 127 { 128 char *p2; 129 130 switch (sym->type) { 131 case S_TRISTATE: 132 if (p[0] == 'm') { 133 sym->def[def].tri = mod; 134 sym->flags |= def_flags; 135 break; 136 } 137 /* fall through */ 138 case S_BOOLEAN: 139 if (p[0] == 'y') { 140 sym->def[def].tri = yes; 141 sym->flags |= def_flags; 142 break; 143 } 144 if (p[0] == 'n') { 145 sym->def[def].tri = no; 146 sym->flags |= def_flags; 147 break; 148 } 149 if (def != S_DEF_AUTO) 150 conf_warning("symbol value '%s' invalid for %s", 151 p, sym->name); 152 return 1; 153 case S_OTHER: 154 if (*p != '"') { 155 for (p2 = p; *p2 && !isspace(*p2); p2++) 156 ; 157 sym->type = S_STRING; 158 goto done; 159 } 160 /* fall through */ 161 case S_STRING: 162 if (*p++ != '"') 163 break; 164 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) { 165 if (*p2 == '"') { 166 *p2 = 0; 167 break; 168 } 169 memmove(p2, p2 + 1, strlen(p2)); 170 } 171 if (!p2) { 172 if (def != S_DEF_AUTO) 173 conf_warning("invalid string found"); 174 return 1; 175 } 176 /* fall through */ 177 case S_INT: 178 case S_HEX: 179 done: 180 if (sym_string_valid(sym, p)) { 181 sym->def[def].val = strdup(p); 182 sym->flags |= def_flags; 183 } else { 184 if (def != S_DEF_AUTO) 185 conf_warning("symbol value '%s' invalid for %s", 186 p, sym->name); 187 return 1; 188 } 189 break; 190 default: 191 ; 192 } 193 return 0; 194 } 195 196 #define LINE_GROWTH 16 197 static int add_byte(int c, char **lineptr, size_t slen, size_t *n) 198 { 199 char *nline; 200 size_t new_size = slen + 1; 201 if (new_size > *n) { 202 new_size += LINE_GROWTH - 1; 203 new_size *= 2; 204 nline = realloc(*lineptr, new_size); 205 if (!nline) 206 return -1; 207 208 *lineptr = nline; 209 *n = new_size; 210 } 211 212 (*lineptr)[slen] = c; 213 214 return 0; 215 } 216 217 static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream) 218 { 219 char *line = *lineptr; 220 size_t slen = 0; 221 222 for (;;) { 223 int c = getc(stream); 224 225 switch (c) { 226 case '\n': 227 if (add_byte(c, &line, slen, n) < 0) 228 goto e_out; 229 slen++; 230 /* fall through */ 231 case EOF: 232 if (add_byte('\0', &line, slen, n) < 0) 233 goto e_out; 234 *lineptr = line; 235 if (slen == 0) 236 return -1; 237 return slen; 238 default: 239 if (add_byte(c, &line, slen, n) < 0) 240 goto e_out; 241 slen++; 242 } 243 } 244 245 e_out: 246 line[slen-1] = '\0'; 247 *lineptr = line; 248 return -1; 249 } 250 251 int conf_read_simple(const char *name, int def) 252 { 253 FILE *in = NULL; 254 char *line = NULL; 255 size_t line_asize = 0; 256 char *p, *p2; 257 struct symbol *sym; 258 int i, def_flags; 259 260 if (name) { 261 in = zconf_fopen(name); 262 } else { 263 struct property *prop; 264 265 name = conf_get_configname(); 266 in = zconf_fopen(name); 267 if (in) 268 goto load; 269 sym_add_change_count(1); 270 if (!sym_defconfig_list) { 271 if (modules_sym) 272 sym_calc_value(modules_sym); 273 return 1; 274 } 275 276 for_all_defaults(sym_defconfig_list, prop) { 277 if (expr_calc_value(prop->visible.expr) == no || 278 prop->expr->type != E_SYMBOL) 279 continue; 280 name = conf_expand_value(prop->expr->left.sym->name); 281 in = zconf_fopen(name); 282 if (in) { 283 conf_message(_("using defaults found in %s"), 284 name); 285 goto load; 286 } 287 } 288 } 289 if (!in) 290 return 1; 291 292 load: 293 conf_filename = name; 294 conf_lineno = 0; 295 conf_warnings = 0; 296 conf_unsaved = 0; 297 298 def_flags = SYMBOL_DEF << def; 299 for_all_symbols(i, sym) { 300 sym->flags |= SYMBOL_CHANGED; 301 sym->flags &= ~(def_flags|SYMBOL_VALID); 302 if (sym_is_choice(sym)) 303 sym->flags |= def_flags; 304 switch (sym->type) { 305 case S_INT: 306 case S_HEX: 307 case S_STRING: 308 if (sym->def[def].val) 309 free(sym->def[def].val); 310 /* fall through */ 311 default: 312 sym->def[def].val = NULL; 313 sym->def[def].tri = no; 314 } 315 } 316 317 while (compat_getline(&line, &line_asize, in) != -1) { 318 conf_lineno++; 319 sym = NULL; 320 if (line[0] == '#') { 321 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_))) 322 continue; 323 p = strchr(line + 2 + strlen(CONFIG_), ' '); 324 if (!p) 325 continue; 326 *p++ = 0; 327 if (strncmp(p, "is not set", 10)) 328 continue; 329 if (def == S_DEF_USER) { 330 sym = sym_find(line + 2 + strlen(CONFIG_)); 331 if (!sym) { 332 sym_add_change_count(1); 333 goto setsym; 334 } 335 } else { 336 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0); 337 if (sym->type == S_UNKNOWN) 338 sym->type = S_BOOLEAN; 339 } 340 if (sym->flags & def_flags) { 341 conf_warning("override: reassigning to symbol %s", sym->name); 342 } 343 switch (sym->type) { 344 case S_BOOLEAN: 345 case S_TRISTATE: 346 sym->def[def].tri = no; 347 sym->flags |= def_flags; 348 break; 349 default: 350 ; 351 } 352 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) { 353 p = strchr(line + strlen(CONFIG_), '='); 354 if (!p) 355 continue; 356 *p++ = 0; 357 p2 = strchr(p, '\n'); 358 if (p2) { 359 *p2-- = 0; 360 if (*p2 == '\r') 361 *p2 = 0; 362 } 363 if (def == S_DEF_USER) { 364 sym = sym_find(line + strlen(CONFIG_)); 365 if (!sym) { 366 sym_add_change_count(1); 367 goto setsym; 368 } 369 } else { 370 sym = sym_lookup(line + strlen(CONFIG_), 0); 371 if (sym->type == S_UNKNOWN) 372 sym->type = S_OTHER; 373 } 374 if (sym->flags & def_flags) { 375 conf_warning("override: reassigning to symbol %s", sym->name); 376 } 377 if (conf_set_sym_val(sym, def, def_flags, p)) 378 continue; 379 } else { 380 if (line[0] != '\r' && line[0] != '\n') 381 conf_warning("unexpected data"); 382 continue; 383 } 384 setsym: 385 if (sym && sym_is_choice_value(sym)) { 386 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); 387 switch (sym->def[def].tri) { 388 case no: 389 break; 390 case mod: 391 if (cs->def[def].tri == yes) { 392 conf_warning("%s creates inconsistent choice state", sym->name); 393 cs->flags &= ~def_flags; 394 } 395 break; 396 case yes: 397 if (cs->def[def].tri != no) 398 conf_warning("override: %s changes choice state", sym->name); 399 cs->def[def].val = sym; 400 break; 401 } 402 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri); 403 } 404 } 405 free(line); 406 fclose(in); 407 408 if (modules_sym) 409 sym_calc_value(modules_sym); 410 return 0; 411 } 412 413 int conf_read(const char *name) 414 { 415 struct symbol *sym; 416 int i; 417 418 sym_set_change_count(0); 419 420 if (conf_read_simple(name, S_DEF_USER)) 421 return 1; 422 423 for_all_symbols(i, sym) { 424 sym_calc_value(sym); 425 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO)) 426 continue; 427 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) { 428 /* check that calculated value agrees with saved value */ 429 switch (sym->type) { 430 case S_BOOLEAN: 431 case S_TRISTATE: 432 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym)) 433 break; 434 if (!sym_is_choice(sym)) 435 continue; 436 /* fall through */ 437 default: 438 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val)) 439 continue; 440 break; 441 } 442 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE)) 443 /* no previous value and not saved */ 444 continue; 445 conf_unsaved++; 446 /* maybe print value in verbose mode... */ 447 } 448 449 for_all_symbols(i, sym) { 450 if (sym_has_value(sym) && !sym_is_choice_value(sym)) { 451 /* Reset values of generates values, so they'll appear 452 * as new, if they should become visible, but that 453 * doesn't quite work if the Kconfig and the saved 454 * configuration disagree. 455 */ 456 if (sym->visible == no && !conf_unsaved) 457 sym->flags &= ~SYMBOL_DEF_USER; 458 switch (sym->type) { 459 case S_STRING: 460 case S_INT: 461 case S_HEX: 462 /* Reset a string value if it's out of range */ 463 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val)) 464 break; 465 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER); 466 conf_unsaved++; 467 break; 468 default: 469 break; 470 } 471 } 472 } 473 474 sym_add_change_count(conf_warnings || conf_unsaved); 475 476 return 0; 477 } 478 479 /* 480 * Kconfig configuration printer 481 * 482 * This printer is used when generating the resulting configuration after 483 * kconfig invocation and `defconfig' files. Unset symbol might be omitted by 484 * passing a non-NULL argument to the printer. 485 * 486 */ 487 static void 488 kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) 489 { 490 491 switch (sym->type) { 492 case S_BOOLEAN: 493 case S_TRISTATE: 494 if (*value == 'n') { 495 bool skip_unset = (arg != NULL); 496 497 if (!skip_unset) 498 fprintf(fp, "# %s%s is not set\n", 499 CONFIG_, sym->name); 500 return; 501 } 502 break; 503 default: 504 break; 505 } 506 507 fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value); 508 } 509 510 static void 511 kconfig_print_comment(FILE *fp, const char *value, void *arg) 512 { 513 const char *p = value; 514 size_t l; 515 516 for (;;) { 517 l = strcspn(p, "\n"); 518 fprintf(fp, "#"); 519 if (l) { 520 fprintf(fp, " "); 521 xfwrite(p, l, 1, fp); 522 p += l; 523 } 524 fprintf(fp, "\n"); 525 if (*p++ == '\0') 526 break; 527 } 528 } 529 530 static struct conf_printer kconfig_printer_cb = 531 { 532 .print_symbol = kconfig_print_symbol, 533 .print_comment = kconfig_print_comment, 534 }; 535 536 /* 537 * Header printer 538 * 539 * This printer is used when generating the `include/generated/autoconf.h' file. 540 */ 541 static void 542 header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) 543 { 544 545 switch (sym->type) { 546 case S_BOOLEAN: 547 case S_TRISTATE: { 548 const char *suffix = ""; 549 550 switch (*value) { 551 case 'n': 552 break; 553 case 'm': 554 suffix = "_MODULE"; 555 /* fall through */ 556 default: 557 fprintf(fp, "#define %s%s%s 1\n", 558 CONFIG_, sym->name, suffix); 559 } 560 break; 561 } 562 case S_HEX: { 563 const char *prefix = ""; 564 565 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X')) 566 prefix = "0x"; 567 fprintf(fp, "#define %s%s %s%s\n", 568 CONFIG_, sym->name, prefix, value); 569 break; 570 } 571 case S_STRING: 572 case S_INT: 573 fprintf(fp, "#define %s%s %s\n", 574 CONFIG_, sym->name, value); 575 break; 576 default: 577 break; 578 } 579 580 } 581 582 static void 583 header_print_comment(FILE *fp, const char *value, void *arg) 584 { 585 const char *p = value; 586 size_t l; 587 588 fprintf(fp, "/*\n"); 589 for (;;) { 590 l = strcspn(p, "\n"); 591 fprintf(fp, " *"); 592 if (l) { 593 fprintf(fp, " "); 594 xfwrite(p, l, 1, fp); 595 p += l; 596 } 597 fprintf(fp, "\n"); 598 if (*p++ == '\0') 599 break; 600 } 601 fprintf(fp, " */\n"); 602 } 603 604 static struct conf_printer header_printer_cb = 605 { 606 .print_symbol = header_print_symbol, 607 .print_comment = header_print_comment, 608 }; 609 610 /* 611 * Tristate printer 612 * 613 * This printer is used when generating the `include/config/tristate.conf' file. 614 */ 615 static void 616 tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) 617 { 618 619 if (sym->type == S_TRISTATE && *value != 'n') 620 fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value)); 621 } 622 623 static struct conf_printer tristate_printer_cb = 624 { 625 .print_symbol = tristate_print_symbol, 626 .print_comment = kconfig_print_comment, 627 }; 628 629 static void conf_write_symbol(FILE *fp, struct symbol *sym, 630 struct conf_printer *printer, void *printer_arg) 631 { 632 const char *str; 633 634 switch (sym->type) { 635 case S_OTHER: 636 case S_UNKNOWN: 637 break; 638 case S_STRING: 639 str = sym_get_string_value(sym); 640 str = sym_escape_string_value(str); 641 printer->print_symbol(fp, sym, str, printer_arg); 642 free((void *)str); 643 break; 644 default: 645 str = sym_get_string_value(sym); 646 printer->print_symbol(fp, sym, str, printer_arg); 647 } 648 } 649 650 static void 651 conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg) 652 { 653 char buf[256]; 654 655 snprintf(buf, sizeof(buf), 656 "\n" 657 "Automatically generated file; DO NOT EDIT.\n" 658 "%s\n", 659 rootmenu.prompt->text); 660 661 printer->print_comment(fp, buf, printer_arg); 662 } 663 664 /* 665 * Write out a minimal config. 666 * All values that has default values are skipped as this is redundant. 667 */ 668 int conf_write_defconfig(const char *filename) 669 { 670 struct symbol *sym; 671 struct menu *menu; 672 FILE *out; 673 674 out = fopen(filename, "w"); 675 if (!out) 676 return 1; 677 678 sym_clear_all_valid(); 679 680 /* Traverse all menus to find all relevant symbols */ 681 menu = rootmenu.list; 682 683 while (menu != NULL) 684 { 685 sym = menu->sym; 686 if (sym == NULL) { 687 if (!menu_is_visible(menu)) 688 goto next_menu; 689 } else if (!sym_is_choice(sym)) { 690 sym_calc_value(sym); 691 if (!(sym->flags & SYMBOL_WRITE)) 692 goto next_menu; 693 sym->flags &= ~SYMBOL_WRITE; 694 /* If we cannot change the symbol - skip */ 695 if (!sym_is_changable(sym)) 696 goto next_menu; 697 /* If symbol equals to default value - skip */ 698 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0) 699 goto next_menu; 700 701 /* 702 * If symbol is a choice value and equals to the 703 * default for a choice - skip. 704 * But only if value is bool and equal to "y" and 705 * choice is not "optional". 706 * (If choice is "optional" then all values can be "n") 707 */ 708 if (sym_is_choice_value(sym)) { 709 struct symbol *cs; 710 struct symbol *ds; 711 712 cs = prop_get_symbol(sym_get_choice_prop(sym)); 713 ds = sym_choice_default(cs); 714 if (!sym_is_optional(cs) && sym == ds) { 715 if ((sym->type == S_BOOLEAN) && 716 sym_get_tristate_value(sym) == yes) 717 goto next_menu; 718 } 719 } 720 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL); 721 } 722 next_menu: 723 if (menu->list != NULL) { 724 menu = menu->list; 725 } 726 else if (menu->next != NULL) { 727 menu = menu->next; 728 } else { 729 while ((menu = menu->parent)) { 730 if (menu->next != NULL) { 731 menu = menu->next; 732 break; 733 } 734 } 735 } 736 } 737 fclose(out); 738 return 0; 739 } 740 741 int conf_write(const char *name) 742 { 743 FILE *out; 744 struct symbol *sym; 745 struct menu *menu; 746 const char *basename; 747 const char *str; 748 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1]; 749 char *env; 750 751 dirname[0] = 0; 752 if (name && name[0]) { 753 struct stat st; 754 char *slash; 755 756 if (!stat(name, &st) && S_ISDIR(st.st_mode)) { 757 strcpy(dirname, name); 758 strcat(dirname, "/"); 759 basename = conf_get_configname(); 760 } else if ((slash = strrchr(name, '/'))) { 761 int size = slash - name + 1; 762 memcpy(dirname, name, size); 763 dirname[size] = 0; 764 if (slash[1]) 765 basename = slash + 1; 766 else 767 basename = conf_get_configname(); 768 } else 769 basename = name; 770 } else 771 basename = conf_get_configname(); 772 773 sprintf(newname, "%s%s", dirname, basename); 774 env = getenv("KCONFIG_OVERWRITECONFIG"); 775 if (!env || !*env) { 776 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid()); 777 out = fopen(tmpname, "w"); 778 } else { 779 *tmpname = 0; 780 out = fopen(newname, "w"); 781 } 782 if (!out) 783 return 1; 784 785 conf_write_heading(out, &kconfig_printer_cb, NULL); 786 787 if (!conf_get_changed()) 788 sym_clear_all_valid(); 789 790 menu = rootmenu.list; 791 while (menu) { 792 sym = menu->sym; 793 if (!sym) { 794 if (!menu_is_visible(menu)) 795 goto next; 796 str = menu_get_prompt(menu); 797 fprintf(out, "\n" 798 "#\n" 799 "# %s\n" 800 "#\n", str); 801 } else if (!(sym->flags & SYMBOL_CHOICE)) { 802 sym_calc_value(sym); 803 if (!(sym->flags & SYMBOL_WRITE)) 804 goto next; 805 sym->flags &= ~SYMBOL_WRITE; 806 807 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL); 808 } 809 810 next: 811 if (menu->list) { 812 menu = menu->list; 813 continue; 814 } 815 if (menu->next) 816 menu = menu->next; 817 else while ((menu = menu->parent)) { 818 if (menu->next) { 819 menu = menu->next; 820 break; 821 } 822 } 823 } 824 fclose(out); 825 826 if (*tmpname) { 827 strcat(dirname, basename); 828 strcat(dirname, ".old"); 829 rename(newname, dirname); 830 if (rename(tmpname, newname)) 831 return 1; 832 } 833 834 conf_message(_("configuration written to %s"), newname); 835 836 sym_set_change_count(0); 837 838 return 0; 839 } 840 841 static int conf_split_config(void) 842 { 843 const char *name; 844 char path[PATH_MAX+1]; 845 char *s, *d, c; 846 struct symbol *sym; 847 struct stat sb; 848 int res, i, fd; 849 850 name = conf_get_autoconfig_name(); 851 conf_read_simple(name, S_DEF_AUTO); 852 853 if (chdir("include/config")) 854 return 1; 855 856 res = 0; 857 for_all_symbols(i, sym) { 858 sym_calc_value(sym); 859 if ((sym->flags & SYMBOL_AUTO) || !sym->name) 860 continue; 861 if (sym->flags & SYMBOL_WRITE) { 862 if (sym->flags & SYMBOL_DEF_AUTO) { 863 /* 864 * symbol has old and new value, 865 * so compare them... 866 */ 867 switch (sym->type) { 868 case S_BOOLEAN: 869 case S_TRISTATE: 870 if (sym_get_tristate_value(sym) == 871 sym->def[S_DEF_AUTO].tri) 872 continue; 873 break; 874 case S_STRING: 875 case S_HEX: 876 case S_INT: 877 if (!strcmp(sym_get_string_value(sym), 878 sym->def[S_DEF_AUTO].val)) 879 continue; 880 break; 881 default: 882 break; 883 } 884 } else { 885 /* 886 * If there is no old value, only 'no' (unset) 887 * is allowed as new value. 888 */ 889 switch (sym->type) { 890 case S_BOOLEAN: 891 case S_TRISTATE: 892 if (sym_get_tristate_value(sym) == no) 893 continue; 894 break; 895 default: 896 break; 897 } 898 } 899 } else if (!(sym->flags & SYMBOL_DEF_AUTO)) 900 /* There is neither an old nor a new value. */ 901 continue; 902 /* else 903 * There is an old value, but no new value ('no' (unset) 904 * isn't saved in auto.conf, so the old value is always 905 * different from 'no'). 906 */ 907 908 /* Replace all '_' and append ".h" */ 909 s = sym->name; 910 d = path; 911 while ((c = *s++)) { 912 c = tolower(c); 913 *d++ = (c == '_') ? '/' : c; 914 } 915 strcpy(d, ".h"); 916 917 /* Assume directory path already exists. */ 918 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); 919 if (fd == -1) { 920 if (errno != ENOENT) { 921 res = 1; 922 break; 923 } 924 /* 925 * Create directory components, 926 * unless they exist already. 927 */ 928 d = path; 929 while ((d = strchr(d, '/'))) { 930 *d = 0; 931 if (stat(path, &sb) && mkdir(path, 0755)) { 932 res = 1; 933 goto out; 934 } 935 *d++ = '/'; 936 } 937 /* Try it again. */ 938 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); 939 if (fd == -1) { 940 res = 1; 941 break; 942 } 943 } 944 close(fd); 945 } 946 out: 947 if (chdir("../..")) 948 return 1; 949 950 return res; 951 } 952 953 int conf_write_autoconf(void) 954 { 955 struct symbol *sym; 956 const char *name; 957 FILE *out, *tristate, *out_h; 958 int i; 959 960 sym_clear_all_valid(); 961 962 file_write_dep("include/config/auto.conf.cmd"); 963 964 if (conf_split_config()) 965 return 1; 966 967 out = fopen(".tmpconfig", "w"); 968 if (!out) 969 return 1; 970 971 tristate = fopen(".tmpconfig_tristate", "w"); 972 if (!tristate) { 973 fclose(out); 974 return 1; 975 } 976 977 out_h = fopen(".tmpconfig.h", "w"); 978 if (!out_h) { 979 fclose(out); 980 fclose(tristate); 981 return 1; 982 } 983 984 conf_write_heading(out, &kconfig_printer_cb, NULL); 985 986 conf_write_heading(tristate, &tristate_printer_cb, NULL); 987 988 conf_write_heading(out_h, &header_printer_cb, NULL); 989 990 for_all_symbols(i, sym) { 991 sym_calc_value(sym); 992 if (!(sym->flags & SYMBOL_WRITE) || !sym->name) 993 continue; 994 995 /* write symbol to auto.conf, tristate and header files */ 996 conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1); 997 998 conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1); 999 1000 conf_write_symbol(out_h, sym, &header_printer_cb, NULL); 1001 } 1002 fclose(out); 1003 fclose(tristate); 1004 fclose(out_h); 1005 1006 name = getenv("KCONFIG_AUTOHEADER"); 1007 if (!name) 1008 name = "include/generated/autoconf.h"; 1009 if (rename(".tmpconfig.h", name)) 1010 return 1; 1011 name = getenv("KCONFIG_TRISTATE"); 1012 if (!name) 1013 name = "include/config/tristate.conf"; 1014 if (rename(".tmpconfig_tristate", name)) 1015 return 1; 1016 name = conf_get_autoconfig_name(); 1017 /* 1018 * This must be the last step, kbuild has a dependency on auto.conf 1019 * and this marks the successful completion of the previous steps. 1020 */ 1021 if (rename(".tmpconfig", name)) 1022 return 1; 1023 1024 return 0; 1025 } 1026 1027 static int sym_change_count; 1028 static void (*conf_changed_callback)(void); 1029 1030 void sym_set_change_count(int count) 1031 { 1032 int _sym_change_count = sym_change_count; 1033 sym_change_count = count; 1034 if (conf_changed_callback && 1035 (bool)_sym_change_count != (bool)count) 1036 conf_changed_callback(); 1037 } 1038 1039 void sym_add_change_count(int count) 1040 { 1041 sym_set_change_count(count + sym_change_count); 1042 } 1043 1044 bool conf_get_changed(void) 1045 { 1046 return sym_change_count; 1047 } 1048 1049 void conf_set_changed_callback(void (*fn)(void)) 1050 { 1051 conf_changed_callback = fn; 1052 } 1053 1054 static bool randomize_choice_values(struct symbol *csym) 1055 { 1056 struct property *prop; 1057 struct symbol *sym; 1058 struct expr *e; 1059 int cnt, def; 1060 1061 /* 1062 * If choice is mod then we may have more items selected 1063 * and if no then no-one. 1064 * In both cases stop. 1065 */ 1066 if (csym->curr.tri != yes) 1067 return false; 1068 1069 prop = sym_get_choice_prop(csym); 1070 1071 /* count entries in choice block */ 1072 cnt = 0; 1073 expr_list_for_each_sym(prop->expr, e, sym) 1074 cnt++; 1075 1076 /* 1077 * find a random value and set it to yes, 1078 * set the rest to no so we have only one set 1079 */ 1080 def = (rand() % cnt); 1081 1082 cnt = 0; 1083 expr_list_for_each_sym(prop->expr, e, sym) { 1084 if (def == cnt++) { 1085 sym->def[S_DEF_USER].tri = yes; 1086 csym->def[S_DEF_USER].val = sym; 1087 } 1088 else { 1089 sym->def[S_DEF_USER].tri = no; 1090 } 1091 sym->flags |= SYMBOL_DEF_USER; 1092 /* clear VALID to get value calculated */ 1093 sym->flags &= ~SYMBOL_VALID; 1094 } 1095 csym->flags |= SYMBOL_DEF_USER; 1096 /* clear VALID to get value calculated */ 1097 csym->flags &= ~(SYMBOL_VALID); 1098 1099 return true; 1100 } 1101 1102 void set_all_choice_values(struct symbol *csym) 1103 { 1104 struct property *prop; 1105 struct symbol *sym; 1106 struct expr *e; 1107 1108 prop = sym_get_choice_prop(csym); 1109 1110 /* 1111 * Set all non-assinged choice values to no 1112 */ 1113 expr_list_for_each_sym(prop->expr, e, sym) { 1114 if (!sym_has_value(sym)) 1115 sym->def[S_DEF_USER].tri = no; 1116 } 1117 csym->flags |= SYMBOL_DEF_USER; 1118 /* clear VALID to get value calculated */ 1119 csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES); 1120 } 1121 1122 bool conf_set_all_new_symbols(enum conf_def_mode mode) 1123 { 1124 struct symbol *sym, *csym; 1125 int i, cnt, pby, pty, ptm; /* pby: probability of boolean = y 1126 * pty: probability of tristate = y 1127 * ptm: probability of tristate = m 1128 */ 1129 1130 pby = 50; pty = ptm = 33; /* can't go as the default in switch-case 1131 * below, otherwise gcc whines about 1132 * -Wmaybe-uninitialized */ 1133 if (mode == def_random) { 1134 int n, p[3]; 1135 char *env = getenv("KCONFIG_PROBABILITY"); 1136 n = 0; 1137 while( env && *env ) { 1138 char *endp; 1139 int tmp = strtol( env, &endp, 10 ); 1140 if( tmp >= 0 && tmp <= 100 ) { 1141 p[n++] = tmp; 1142 } else { 1143 errno = ERANGE; 1144 perror( "KCONFIG_PROBABILITY" ); 1145 exit( 1 ); 1146 } 1147 env = (*endp == ':') ? endp+1 : endp; 1148 if( n >=3 ) { 1149 break; 1150 } 1151 } 1152 switch( n ) { 1153 case 1: 1154 pby = p[0]; ptm = pby/2; pty = pby-ptm; 1155 break; 1156 case 2: 1157 pty = p[0]; ptm = p[1]; pby = pty + ptm; 1158 break; 1159 case 3: 1160 pby = p[0]; pty = p[1]; ptm = p[2]; 1161 break; 1162 } 1163 1164 if( pty+ptm > 100 ) { 1165 errno = ERANGE; 1166 perror( "KCONFIG_PROBABILITY" ); 1167 exit( 1 ); 1168 } 1169 } 1170 bool has_changed = false; 1171 1172 for_all_symbols(i, sym) { 1173 if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID)) 1174 continue; 1175 switch (sym_get_type(sym)) { 1176 case S_BOOLEAN: 1177 case S_TRISTATE: 1178 has_changed = true; 1179 switch (mode) { 1180 case def_yes: 1181 sym->def[S_DEF_USER].tri = yes; 1182 break; 1183 case def_mod: 1184 sym->def[S_DEF_USER].tri = mod; 1185 break; 1186 case def_no: 1187 if (sym->flags & SYMBOL_ALLNOCONFIG_Y) 1188 sym->def[S_DEF_USER].tri = yes; 1189 else 1190 sym->def[S_DEF_USER].tri = no; 1191 break; 1192 case def_random: 1193 sym->def[S_DEF_USER].tri = no; 1194 cnt = rand() % 100; 1195 if (sym->type == S_TRISTATE) { 1196 if (cnt < pty) 1197 sym->def[S_DEF_USER].tri = yes; 1198 else if (cnt < (pty+ptm)) 1199 sym->def[S_DEF_USER].tri = mod; 1200 } else if (cnt < pby) 1201 sym->def[S_DEF_USER].tri = yes; 1202 break; 1203 default: 1204 continue; 1205 } 1206 if (!(sym_is_choice(sym) && mode == def_random)) 1207 sym->flags |= SYMBOL_DEF_USER; 1208 break; 1209 default: 1210 break; 1211 } 1212 1213 } 1214 1215 sym_clear_all_valid(); 1216 1217 /* 1218 * We have different type of choice blocks. 1219 * If curr.tri equals to mod then we can select several 1220 * choice symbols in one block. 1221 * In this case we do nothing. 1222 * If curr.tri equals yes then only one symbol can be 1223 * selected in a choice block and we set it to yes, 1224 * and the rest to no. 1225 */ 1226 if (mode != def_random) { 1227 for_all_symbols(i, csym) { 1228 if ((sym_is_choice(csym) && !sym_has_value(csym)) || 1229 sym_is_choice_value(csym)) 1230 csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES; 1231 } 1232 } 1233 1234 for_all_symbols(i, csym) { 1235 if (sym_has_value(csym) || !sym_is_choice(csym)) 1236 continue; 1237 1238 sym_calc_value(csym); 1239 if (mode == def_random) 1240 has_changed = randomize_choice_values(csym); 1241 else { 1242 set_all_choice_values(csym); 1243 has_changed = true; 1244 } 1245 } 1246 1247 return has_changed; 1248 } 1249