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