scripts/kconfig/confdata.c

   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 <fcntl.h>
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <time.h>
  13 #include <unistd.h>
  14
  15 #define LKC_DIRECT_LINK
  16 #include "lkc.h"
  17
  18 static void conf_warning(const char *fmt, ...)
  19         __attribute__ ((format (printf, 1, 2)));
  20
  21 static const char *conf_filename;
  22 static int conf_lineno, conf_warnings, conf_unsaved;
  23
  24 const char conf_defname[] = "arch/$ARCH/defconfig";
  25
  26 static void conf_warning(const char *fmt, ...)
  27 {
  28         va_list ap;
  29         va_start(ap, fmt);
  30         fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
  31         vfprintf(stderr, fmt, ap);
  32         fprintf(stderr, "\n");
  33         va_end(ap);
  34         conf_warnings++;
  35 }
  36
  37 const char *conf_get_configname(void)
  38 {
  39         char *name = getenv("KCONFIG_CONFIG");
  40
  41         return name ? name : ".config";
  42 }
  43
  44 static char *conf_expand_value(const char *in)
  45 {
  46         struct symbol *sym;
  47         const char *src;
  48         static char res_value[SYMBOL_MAXLENGTH];
  49         char *dst, name[SYMBOL_MAXLENGTH];
  50
  51         res_value[0] = 0;
  52         dst = name;
  53         while ((src = strchr(in, '$'))) {
  54                 strncat(res_value, in, src - in);
  55                 src++;
  56                 dst = name;
  57                 while (isalnum(*src) || *src == '_')
  58                         *dst++ = *src++;
  59                 *dst = 0;
  60                 sym = sym_lookup(name, 0);
  61                 sym_calc_value(sym);
  62                 strcat(res_value, sym_get_string_value(sym));
  63                 in = src;
  64         }
  65         strcat(res_value, in);
  66
  67         return res_value;
  68 }
  69
  70 char *conf_get_default_confname(void)
  71 {
  72         struct stat buf;
  73         static char fullname[PATH_MAX+1];
  74         char *env, *name;
  75
  76         name = conf_expand_value(conf_defname);
  77         env = getenv(SRCTREE);
  78         if (env) {
  79                 sprintf(fullname, "%s/%s", env, name);
  80                 if (!stat(fullname, &buf))
  81                         return fullname;
  82         }
  83         return name;
  84 }
  85
  86 int conf_read_simple(const char *name, int def)
  87 {
  88         FILE *in = NULL;
  89         char line[1024];
  90         char *p, *p2;
  91         struct symbol *sym;
  92         int i, def_flags;
  93
  94         if (name) {
  95                 in = zconf_fopen(name);
  96         } else {
  97                 struct property *prop;
  98
  99                 name = conf_get_configname();
 100                 in = zconf_fopen(name);
 101                 if (in)
 102                         goto load;
 103                 sym_change_count++;
 104                 if (!sym_defconfig_list)
 105                         return 1;
 106
 107                 for_all_defaults(sym_defconfig_list, prop) {
 108                         if (expr_calc_value(prop->visible.expr) == no ||
 109                             prop->expr->type != E_SYMBOL)
 110                                 continue;
 111                         name = conf_expand_value(prop->expr->left.sym->name);
 112                         in = zconf_fopen(name);
 113                         if (in) {
 114                                 printf(_("#\n"
 115                                          "# using defaults found in %s\n"
 116                                          "#\n"), name);
 117                                 goto load;
 118                         }
 119                 }
 120         }
 121         if (!in)
 122                 return 1;
 123
 124 load:
 125         conf_filename = name;
 126         conf_lineno = 0;
 127         conf_warnings = 0;
 128         conf_unsaved = 0;
 129
 130         def_flags = SYMBOL_DEF << def;
 131         for_all_symbols(i, sym) {
 132                 sym->flags |= SYMBOL_CHANGED;
 133                 sym->flags &= ~(def_flags|SYMBOL_VALID);
 134                 if (sym_is_choice(sym))
 135                         sym->flags |= def_flags;
 136                 switch (sym->type) {
 137                 case S_INT:
 138                 case S_HEX:
 139                 case S_STRING:
 140                         if (sym->def[def].val)
 141                                 free(sym->def[def].val);
 142                 default:
 143                         sym->def[def].val = NULL;
 144                         sym->def[def].tri = no;
 145                 }
 146         }
 147
 148         while (fgets(line, sizeof(line), in)) {
 149                 conf_lineno++;
 150                 sym = NULL;
 151                 switch (line[0]) {
 152                 case '#':
 153                         if (memcmp(line + 2, "CONFIG_", 7))
 154                                 continue;
 155                         p = strchr(line + 9, ' ');
 156                         if (!p)
 157                                 continue;
 158                         *p++ = 0;
 159                         if (strncmp(p, "is not set", 10))
 160                                 continue;
 161                         if (def == S_DEF_USER) {
 162                                 sym = sym_find(line + 9);
 163                                 if (!sym) {
 164                                         conf_warning("trying to assign nonexistent symbol %s", line + 9);
 165                                         break;
 166                                 }
 167                         } else {
 168                                 sym = sym_lookup(line + 9, 0);
 169                                 if (sym->type == S_UNKNOWN)
 170                                         sym->type = S_BOOLEAN;
 171                         }
 172                         if (sym->flags & def_flags) {
 173                                 conf_warning("trying to reassign symbol %s", sym->name);
 174                                 break;
 175                         }
 176                         switch (sym->type) {
 177                         case S_BOOLEAN:
 178                         case S_TRISTATE:
 179                                 sym->def[def].tri = no;
 180                                 sym->flags |= def_flags;
 181                                 break;
 182                         default:
 183                                 ;
 184                         }
 185                         break;
 186                 case 'C':
 187                         if (memcmp(line, "CONFIG_", 7)) {
 188                                 conf_warning("unexpected data");
 189                                 continue;
 190                         }
 191                         p = strchr(line + 7, '=');
 192                         if (!p)
 193                                 continue;
 194                         *p++ = 0;
 195                         p2 = strchr(p, '\n');
 196                         if (p2)
 197                                 *p2 = 0;
 198                         if (def == S_DEF_USER) {
 199                                 sym = sym_find(line + 7);
 200                                 if (!sym) {
 201                                         conf_warning("trying to assign nonexistent symbol %s", line + 7);
 202                                         break;
 203                                 }
 204                         } else {
 205                                 sym = sym_lookup(line + 7, 0);
 206                                 if (sym->type == S_UNKNOWN)
 207                                         sym->type = S_OTHER;
 208                         }
 209                         if (sym->flags & def_flags) {
 210                                 conf_warning("trying to reassign symbol %s", sym->name);
 211                                 break;
 212                         }
 213                         switch (sym->type) {
 214                         case S_TRISTATE:
 215                                 if (p[0] == 'm') {
 216                                         sym->def[def].tri = mod;
 217                                         sym->flags |= def_flags;
 218                                         break;
 219                                 }
 220                         case S_BOOLEAN:
 221                                 if (p[0] == 'y') {
 222                                         sym->def[def].tri = yes;
 223                                         sym->flags |= def_flags;
 224                                         break;
 225                                 }
 226                                 if (p[0] == 'n') {
 227                                         sym->def[def].tri = no;
 228                                         sym->flags |= def_flags;
 229                                         break;
 230                                 }
 231                                 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
 232                                 break;
 233                         case S_OTHER:
 234                                 if (*p != '"') {
 235                                         for (p2 = p; *p2 && !isspace(*p2); p2++)
 236                                                 ;
 237                                         sym->type = S_STRING;
 238                                         goto done;
 239                                 }
 240                         case S_STRING:
 241                                 if (*p++ != '"')
 242                                         break;
 243                                 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
 244                                         if (*p2 == '"') {
 245                                                 *p2 = 0;
 246                                                 break;
 247                                         }
 248                                         memmove(p2, p2 + 1, strlen(p2));
 249                                 }
 250                                 if (!p2) {
 251                                         conf_warning("invalid string found");
 252                                         continue;
 253                                 }
 254                         case S_INT:
 255                         case S_HEX:
 256                         done:
 257                                 if (sym_string_valid(sym, p)) {
 258                                         sym->def[def].val = strdup(p);
 259                                         sym->flags |= def_flags;
 260                                 } else {
 261                                         conf_warning("symbol value '%s' invalid for %s", p, sym->name);
 262                                         continue;
 263                                 }
 264                                 break;
 265                         default:
 266                                 ;
 267                         }
 268                         break;
 269                 case '\n':
 270                         break;
 271                 default:
 272                         conf_warning("unexpected data");
 273                         continue;
 274                 }
 275                 if (sym && sym_is_choice_value(sym)) {
 276                         struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
 277                         switch (sym->def[def].tri) {
 278                         case no:
 279                                 break;
 280                         case mod:
 281                                 if (cs->def[def].tri == yes) {
 282                                         conf_warning("%s creates inconsistent choice state", sym->name);
 283                                         cs->flags &= ~def_flags;
 284                                 }
 285                                 break;
 286                         case yes:
 287                                 if (cs->def[def].tri != no) {
 288                                         conf_warning("%s creates inconsistent choice state", sym->name);
 289                                         cs->flags &= ~def_flags;
 290                                 } else
 291                                         cs->def[def].val = sym;
 292                                 break;
 293                         }
 294                         cs->def[def].tri = E_OR(cs->def[def].tri, sym->def[def].tri);
 295                 }
 296         }
 297         fclose(in);
 298
 299         if (modules_sym)
 300                 sym_calc_value(modules_sym);
 301         return 0;
 302 }
 303
 304 int conf_read(const char *name)
 305 {
 306         struct symbol *sym;
 307         struct property *prop;
 308         struct expr *e;
 309         int i, flags;
 310
 311         sym_change_count = 0;
 312
 313         if (conf_read_simple(name, S_DEF_USER))
 314                 return 1;
 315
 316         for_all_symbols(i, sym) {
 317                 sym_calc_value(sym);
 318                 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
 319                         goto sym_ok;
 320                 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
 321                         /* check that calculated value agrees with saved value */
 322                         switch (sym->type) {
 323                         case S_BOOLEAN:
 324                         case S_TRISTATE:
 325                                 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
 326                                         break;
 327                                 if (!sym_is_choice(sym))
 328                                         goto sym_ok;
 329                         default:
 330                                 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
 331                                         goto sym_ok;
 332                                 break;
 333                         }
 334                 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
 335                         /* no previous value and not saved */
 336                         goto sym_ok;
 337                 conf_unsaved++;
 338                 /* maybe print value in verbose mode... */
 339         sym_ok:
 340                 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
 341                         if (sym->visible == no)
 342                                 sym->flags &= ~SYMBOL_DEF_USER;
 343                         switch (sym->type) {
 344                         case S_STRING:
 345                         case S_INT:
 346                         case S_HEX:
 347                                 if (!sym_string_within_range(sym, sym->def[S_DEF_USER].val))
 348                                         sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
 349                         default:
 350                                 break;
 351                         }
 352                 }
 353                 if (!sym_is_choice(sym))
 354                         continue;
 355                 prop = sym_get_choice_prop(sym);
 356                 flags = sym->flags;
 357                 for (e = prop->expr; e; e = e->left.expr)
 358                         if (e->right.sym->visible != no)
 359                                 flags &= e->right.sym->flags;
 360                 sym->flags &= flags | ~SYMBOL_DEF_USER;
 361         }
 362
 363         sym_change_count += conf_warnings || conf_unsaved;
 364
 365         return 0;
 366 }
 367
 368 int conf_write(const char *name)
 369 {
 370         FILE *out;
 371         struct symbol *sym;
 372         struct menu *menu;
 373         const char *basename;
 374         char dirname[128], tmpname[128], newname[128];
 375         int type, l;
 376         const char *str;
 377         time_t now;
 378         int use_timestamp = 1;
 379         char *env;
 380
 381         dirname[0] = 0;
 382         if (name && name[0]) {
 383                 struct stat st;
 384                 char *slash;
 385
 386                 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
 387                         strcpy(dirname, name);
 388                         strcat(dirname, "/");
 389                         basename = conf_get_configname();
 390                 } else if ((slash = strrchr(name, '/'))) {
 391                         int size = slash - name + 1;
 392                         memcpy(dirname, name, size);
 393                         dirname[size] = 0;
 394                         if (slash[1])
 395                                 basename = slash + 1;
 396                         else
 397                                 basename = conf_get_configname();
 398                 } else
 399                         basename = name;
 400         } else
 401                 basename = conf_get_configname();
 402
 403         sprintf(newname, "%s%s", dirname, basename);
 404         env = getenv("KCONFIG_OVERWRITECONFIG");
 405         if (!env || !*env) {
 406                 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
 407                 out = fopen(tmpname, "w");
 408         } else {
 409                 *tmpname = 0;
 410                 out = fopen(newname, "w");
 411         }
 412         if (!out)
 413                 return 1;
 414
 415         sym = sym_lookup("KERNELVERSION", 0);
 416         sym_calc_value(sym);
 417         time(&now);
 418         env = getenv("KCONFIG_NOTIMESTAMP");
 419         if (env && *env)
 420                 use_timestamp = 0;
 421
 422         fprintf(out, _("#\n"
 423                        "# Automatically generated make config: don't edit\n"
 424                        "# Linux kernel version: %s\n"
 425                        "%s%s"
 426                        "#\n"),
 427                      sym_get_string_value(sym),
 428                      use_timestamp ? "# " : "",
 429                      use_timestamp ? ctime(&now) : "");
 430
 431         if (!sym_change_count)
 432                 sym_clear_all_valid();
 433
 434         menu = rootmenu.list;
 435         while (menu) {
 436                 sym = menu->sym;
 437                 if (!sym) {
 438                         if (!menu_is_visible(menu))
 439                                 goto next;
 440                         str = menu_get_prompt(menu);
 441                         fprintf(out, "\n"
 442                                      "#\n"
 443                                      "# %s\n"
 444                                      "#\n", str);
 445                 } else if (!(sym->flags & SYMBOL_CHOICE)) {
 446                         sym_calc_value(sym);
 447                         if (!(sym->flags & SYMBOL_WRITE))
 448                                 goto next;
 449                         sym->flags &= ~SYMBOL_WRITE;
 450                         type = sym->type;
 451                         if (type == S_TRISTATE) {
 452                                 sym_calc_value(modules_sym);
 453                                 if (modules_sym->curr.tri == no)
 454                                         type = S_BOOLEAN;
 455                         }
 456                         switch (type) {
 457                         case S_BOOLEAN:
 458                         case S_TRISTATE:
 459                                 switch (sym_get_tristate_value(sym)) {
 460                                 case no:
 461                                         fprintf(out, "# CONFIG_%s is not set\n", sym->name);
 462                                         break;
 463                                 case mod:
 464                                         fprintf(out, "CONFIG_%s=m\n", sym->name);
 465                                         break;
 466                                 case yes:
 467                                         fprintf(out, "CONFIG_%s=y\n", sym->name);
 468                                         break;
 469                                 }
 470                                 break;
 471                         case S_STRING:
 472                                 str = sym_get_string_value(sym);
 473                                 fprintf(out, "CONFIG_%s=\"", sym->name);
 474                                 while (1) {
 475                                         l = strcspn(str, "\"\\");
 476                                         if (l) {
 477                                                 fwrite(str, l, 1, out);
 478                                                 str += l;
 479                                         }
 480                                         if (!*str)
 481                                                 break;
 482                                         fprintf(out, "\\%c", *str++);
 483                                 }
 484                                 fputs("\"\n", out);
 485                                 break;
 486                         case S_HEX:
 487                                 str = sym_get_string_value(sym);
 488                                 if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
 489                                         fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
 490                                         break;
 491                                 }
 492                         case S_INT:
 493                                 str = sym_get_string_value(sym);
 494                                 fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
 495                                 break;
 496                         }
 497                 }
 498
 499         next:
 500                 if (menu->list) {
 501                         menu = menu->list;
 502                         continue;
 503                 }
 504                 if (menu->next)
 505                         menu = menu->next;
 506                 else while ((menu = menu->parent)) {
 507                         if (menu->next) {
 508                                 menu = menu->next;
 509                                 break;
 510                         }
 511                 }
 512         }
 513         fclose(out);
 514
 515         if (*tmpname) {
 516                 strcat(dirname, name ? name : conf_get_configname());
 517                 strcat(dirname, ".old");
 518                 rename(newname, dirname);
 519                 if (rename(tmpname, newname))
 520                         return 1;
 521         }
 522
 523         printf(_("#\n"
 524                  "# configuration written to %s\n"
 525                  "#\n"), newname);
 526
 527         sym_change_count = 0;
 528
 529         return 0;
 530 }
 531
 532 int conf_split_config(void)
 533 {
 534         char *name, path[128];
 535         char *s, *d, c;
 536         struct symbol *sym;
 537         struct stat sb;
 538         int res, i, fd;
 539
 540         name = getenv("KCONFIG_AUTOCONFIG");
 541         if (!name)
 542                 name = "include/config/auto.conf";
 543         conf_read_simple(name, S_DEF_AUTO);
 544
 545         if (chdir("include/config"))
 546                 return 1;
 547
 548         res = 0;
 549         for_all_symbols(i, sym) {
 550                 sym_calc_value(sym);
 551                 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
 552                         continue;
 553                 if (sym->flags & SYMBOL_WRITE) {
 554                         if (sym->flags & SYMBOL_DEF_AUTO) {
 555                                 /*
 556                                  * symbol has old and new value,
 557                                  * so compare them...
 558                                  */
 559                                 switch (sym->type) {
 560                                 case S_BOOLEAN:
 561                                 case S_TRISTATE:
 562                                         if (sym_get_tristate_value(sym) ==
 563                                             sym->def[S_DEF_AUTO].tri)
 564                                                 continue;
 565                                         break;
 566                                 case S_STRING:
 567                                 case S_HEX:
 568                                 case S_INT:
 569                                         if (!strcmp(sym_get_string_value(sym),
 570                                                     sym->def[S_DEF_AUTO].val))
 571                                                 continue;
 572                                         break;
 573                                 default:
 574                                         break;
 575                                 }
 576                         } else {
 577                                 /*
 578                                  * If there is no old value, only 'no' (unset)
 579                                  * is allowed as new value.
 580                                  */
 581                                 switch (sym->type) {
 582                                 case S_BOOLEAN:
 583                                 case S_TRISTATE:
 584                                         if (sym_get_tristate_value(sym) == no)
 585                                                 continue;
 586                                         break;
 587                                 default:
 588                                         break;
 589                                 }
 590                         }
 591                 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
 592                         /* There is neither an old nor a new value. */
 593                         continue;
 594                 /* else
 595                  *      There is an old value, but no new value ('no' (unset)
 596                  *      isn't saved in auto.conf, so the old value is always
 597                  *      different from 'no').
 598                  */
 599
 600                 /* Replace all '_' and append ".h" */
 601                 s = sym->name;
 602                 d = path;
 603                 while ((c = *s++)) {
 604                         c = tolower(c);
 605                         *d++ = (c == '_') ? '/' : c;
 606                 }
 607                 strcpy(d, ".h");
 608
 609                 /* Assume directory path already exists. */
 610                 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
 611                 if (fd == -1) {
 612                         if (errno != ENOENT) {
 613                                 res = 1;
 614                                 break;
 615                         }
 616                         /*
 617                          * Create directory components,
 618                          * unless they exist already.
 619                          */
 620                         d = path;
 621                         while ((d = strchr(d, '/'))) {
 622                                 *d = 0;
 623                                 if (stat(path, &sb) && mkdir(path, 0755)) {
 624                                         res = 1;
 625                                         goto out;
 626                                 }
 627                                 *d++ = '/';
 628                         }
 629                         /* Try it again. */
 630                         fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
 631                         if (fd == -1) {
 632                                 res = 1;
 633                                 break;
 634                         }
 635                 }
 636                 close(fd);
 637         }
 638 out:
 639         if (chdir("../.."))
 640                 return 1;
 641
 642         return res;
 643 }
 644
 645 int conf_write_autoconf(void)
 646 {
 647         struct symbol *sym;
 648         const char *str;
 649         char *name;
 650         FILE *out, *out_h;
 651         time_t now;
 652         int i, l;
 653
 654         sym_clear_all_valid();
 655
 656         file_write_dep("include/config/auto.conf.cmd");
 657
 658         if (conf_split_config())
 659                 return 1;
 660
 661         out = fopen(".tmpconfig", "w");
 662         if (!out)
 663                 return 1;
 664
 665         out_h = fopen(".tmpconfig.h", "w");
 666         if (!out_h) {
 667                 fclose(out);
 668                 return 1;
 669         }
 670
 671         sym = sym_lookup("KERNELVERSION", 0);
 672         sym_calc_value(sym);
 673         time(&now);
 674         fprintf(out, "#\n"
 675                      "# Automatically generated make config: don't edit\n"
 676                      "# Linux kernel version: %s\n"
 677                      "# %s"
 678                      "#\n",
 679                      sym_get_string_value(sym), ctime(&now));
 680         fprintf(out_h, "/*\n"
 681                        " * Automatically generated C config: don't edit\n"
 682                        " * Linux kernel version: %s\n"
 683                        " * %s"
 684                        " */\n"
 685                        "#define AUTOCONF_INCLUDED\n",
 686                        sym_get_string_value(sym), ctime(&now));
 687
 688         for_all_symbols(i, sym) {
 689                 sym_calc_value(sym);
 690                 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
 691                         continue;
 692                 switch (sym->type) {
 693                 case S_BOOLEAN:
 694                 case S_TRISTATE:
 695                         switch (sym_get_tristate_value(sym)) {
 696                         case no:
 697                                 break;
 698                         case mod:
 699                                 fprintf(out, "CONFIG_%s=m\n", sym->name);
 700                                 fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name);
 701                                 break;
 702                         case yes:
 703                                 fprintf(out, "CONFIG_%s=y\n", sym->name);
 704                                 fprintf(out_h, "#define CONFIG_%s 1\n", sym->name);
 705                                 break;
 706                         }
 707                         break;
 708                 case S_STRING:
 709                         str = sym_get_string_value(sym);
 710                         fprintf(out, "CONFIG_%s=\"", sym->name);
 711                         fprintf(out_h, "#define CONFIG_%s \"", sym->name);
 712                         while (1) {
 713                                 l = strcspn(str, "\"\\");
 714                                 if (l) {
 715                                         fwrite(str, l, 1, out);
 716                                         fwrite(str, l, 1, out_h);
 717                                         str += l;
 718                                 }
 719                                 if (!*str)
 720                                         break;
 721                                 fprintf(out, "\\%c", *str);
 722                                 fprintf(out_h, "\\%c", *str);
 723                                 str++;
 724                         }
 725                         fputs("\"\n", out);
 726                         fputs("\"\n", out_h);
 727                         break;
 728                 case S_HEX:
 729                         str = sym_get_string_value(sym);
 730                         if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
 731                                 fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
 732                                 fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str);
 733                                 break;
 734                         }
 735                 case S_INT:
 736                         str = sym_get_string_value(sym);
 737                         fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
 738                         fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str);
 739                         break;
 740                 default:
 741                         break;
 742                 }
 743         }
 744         fclose(out);
 745         fclose(out_h);
 746
 747         name = getenv("KCONFIG_AUTOHEADER");
 748         if (!name)
 749                 name = "include/linux/autoconf.h";
 750         if (rename(".tmpconfig.h", name))
 751                 return 1;
 752         name = getenv("KCONFIG_AUTOCONFIG");
 753         if (!name)
 754                 name = "include/config/auto.conf";
 755         /*
 756          * This must be the last step, kbuild has a dependency on auto.conf
 757          * and this marks the successful completion of the previous steps.
 758          */
 759         if (rename(".tmpconfig", name))
 760                 return 1;
 761
 762         return 0;
 763 }