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