l4/pkg/uclibc/lib/contrib/uclibc/extra/config/conf.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 <locale.h>
   7 #include <ctype.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <time.h>
  12 #include <unistd.h>
  13 #include <getopt.h>
  14 #include <sys/stat.h>
  15 #include <sys/time.h>
  16 #include <errno.h>
  17
  18 #include "lkc.h"
  19
  20 static void conf(struct menu *menu);
  21 static void check_conf(struct menu *menu);
  22 static void xfgets(char *str, int size, FILE *in);
  23
  24 enum input_mode {
  25         oldaskconfig,
  26         silentoldconfig,
  27         oldconfig,
  28         allnoconfig,
  29         allyesconfig,
  30         allmodconfig,
  31         alldefconfig,
  32         randconfig,
  33         defconfig,
  34         savedefconfig,
  35         listnewconfig,
  36         olddefconfig,
  37 } input_mode = oldaskconfig;
  38
  39 static int indent = 1;
  40 static int tty_stdio;
  41 static int valid_stdin = 1;
  42 static int sync_kconfig;
  43 static int conf_cnt;
  44 static char line[128];
  45 static struct menu *rootEntry;
  46
  47 static void print_help(struct menu *menu)
  48 {
  49         struct gstr help = str_new();
  50
  51         menu_get_ext_help(menu, &help);
  52
  53         printf("\n%s\n", str_get(&help));
  54         str_free(&help);
  55 }
  56
  57 static void strip(char *str)
  58 {
  59         char *p = str;
  60         int l;
  61
  62         while ((isspace(*p)))
  63                 p++;
  64         l = strlen(p);
  65         if (p != str)
  66                 memmove(str, p, l + 1);
  67         if (!l)
  68                 return;
  69         p = str + l - 1;
  70         while ((isspace(*p)))
  71                 *p-- = 0;
  72 }
  73
  74 static void check_stdin(void)
  75 {
  76         if (!valid_stdin) {
  77                 printf(_("aborted!\n\n"));
  78                 printf(_("Console input/output is redirected. "));
  79                 printf(_("Run 'make oldconfig' to update configuration.\n\n"));
  80                 exit(1);
  81         }
  82 }
  83
  84 static int conf_askvalue(struct symbol *sym, const char *def)
  85 {
  86         enum symbol_type type = sym_get_type(sym);
  87
  88         if (!sym_has_value(sym))
  89                 printf(_("(NEW) "));
  90
  91         line[0] = '\n';
  92         line[1] = 0;
  93
  94         if (!sym_is_changable(sym)) {
  95                 printf("%s\n", def);
  96                 line[0] = '\n';
  97                 line[1] = 0;
  98                 return 0;
  99         }
 100
 101         switch (input_mode) {
 102         case oldconfig:
 103         case silentoldconfig:
 104                 if (sym_has_value(sym)) {
 105                         printf("%s\n", def);
 106                         return 0;
 107                 }
 108                 check_stdin();
 109                 /* fall through */
 110         case oldaskconfig:
 111                 fflush(stdout);
 112                 xfgets(line, 128, stdin);
 113                 if (!tty_stdio)
 114                         printf("\n");
 115                 return 1;
 116         default:
 117                 break;
 118         }
 119
 120         switch (type) {
 121         case S_INT:
 122         case S_HEX:
 123         case S_STRING:
 124                 printf("%s\n", def);
 125                 return 1;
 126         default:
 127                 ;
 128         }
 129         printf("%s", line);
 130         return 1;
 131 }
 132
 133 static int conf_string(struct menu *menu)
 134 {
 135         struct symbol *sym = menu->sym;
 136         const char *def;
 137
 138         while (1) {
 139                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
 140                 printf("(%s) ", sym->name);
 141                 def = sym_get_string_value(sym);
 142                 if (sym_get_string_value(sym))
 143                         printf("[%s] ", def);
 144                 if (!conf_askvalue(sym, def))
 145                         return 0;
 146                 switch (line[0]) {
 147                 case '\n':
 148                         break;
 149                 case '?':
 150                         /* print help */
 151                         if (line[1] == '\n') {
 152                                 print_help(menu);
 153                                 def = NULL;
 154                                 break;
 155                         }
 156                         /* fall through */
 157                 default:
 158                         line[strlen(line)-1] = 0;
 159                         def = line;
 160                 }
 161                 if (def && sym_set_string_value(sym, def))
 162                         return 0;
 163         }
 164 }
 165
 166 static int conf_sym(struct menu *menu)
 167 {
 168         struct symbol *sym = menu->sym;
 169         tristate oldval, newval;
 170
 171         while (1) {
 172                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
 173                 if (sym->name)
 174                         printf("(%s) ", sym->name);
 175                 putchar('[');
 176                 oldval = sym_get_tristate_value(sym);
 177                 switch (oldval) {
 178                 case no:
 179                         putchar('N');
 180                         break;
 181                 case mod:
 182                         putchar('M');
 183                         break;
 184                 case yes:
 185                         putchar('Y');
 186                         break;
 187                 }
 188                 if (oldval != no && sym_tristate_within_range(sym, no))
 189                         printf("/n");
 190                 if (oldval != mod && sym_tristate_within_range(sym, mod))
 191                         printf("/m");
 192                 if (oldval != yes && sym_tristate_within_range(sym, yes))
 193                         printf("/y");
 194                 if (menu_has_help(menu))
 195                         printf("/?");
 196                 printf("] ");
 197                 if (!conf_askvalue(sym, sym_get_string_value(sym)))
 198                         return 0;
 199                 strip(line);
 200
 201                 switch (line[0]) {
 202                 case 'n':
 203                 case 'N':
 204                         newval = no;
 205                         if (!line[1] || !strcmp(&line[1], "o"))
 206                                 break;
 207                         continue;
 208                 case 'm':
 209                 case 'M':
 210                         newval = mod;
 211                         if (!line[1])
 212                                 break;
 213                         continue;
 214                 case 'y':
 215                 case 'Y':
 216                         newval = yes;
 217                         if (!line[1] || !strcmp(&line[1], "es"))
 218                                 break;
 219                         continue;
 220                 case 0:
 221                         newval = oldval;
 222                         break;
 223                 case '?':
 224                         goto help;
 225                 default:
 226                         continue;
 227                 }
 228                 if (sym_set_tristate_value(sym, newval))
 229                         return 0;
 230 help:
 231                 print_help(menu);
 232         }
 233 }
 234
 235 static int conf_choice(struct menu *menu)
 236 {
 237         struct symbol *sym, *def_sym;
 238         struct menu *child;
 239         bool is_new;
 240
 241         sym = menu->sym;
 242         is_new = !sym_has_value(sym);
 243         if (sym_is_changable(sym)) {
 244                 conf_sym(menu);
 245                 sym_calc_value(sym);
 246                 switch (sym_get_tristate_value(sym)) {
 247                 case no:
 248                         return 1;
 249                 case mod:
 250                         return 0;
 251                 case yes:
 252                         break;
 253                 }
 254         } else {
 255                 switch (sym_get_tristate_value(sym)) {
 256                 case no:
 257                         return 1;
 258                 case mod:
 259                         printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
 260                         return 0;
 261                 case yes:
 262                         break;
 263                 }
 264         }
 265
 266         while (1) {
 267                 int cnt, def;
 268
 269                 printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
 270                 def_sym = sym_get_choice_value(sym);
 271                 cnt = def = 0;
 272                 line[0] = 0;
 273                 for (child = menu->list; child; child = child->next) {
 274                         if (!menu_is_visible(child))
 275                                 continue;
 276                         if (!child->sym) {
 277                                 printf("%*c %s\n", indent, '*', _(menu_get_prompt(child)));
 278                                 continue;
 279                         }
 280                         cnt++;
 281                         if (child->sym == def_sym) {
 282                                 def = cnt;
 283                                 printf("%*c", indent, '>');
 284                         } else
 285                                 printf("%*c", indent, ' ');
 286                         printf(" %d. %s", cnt, _(menu_get_prompt(child)));
 287                         if (child->sym->name)
 288                                 printf(" (%s)", child->sym->name);
 289                         if (!sym_has_value(child->sym))
 290                                 printf(_(" (NEW)"));
 291                         printf("\n");
 292                 }
 293                 printf(_("%*schoice"), indent - 1, "");
 294                 if (cnt == 1) {
 295                         printf("[1]: 1\n");
 296                         goto conf_childs;
 297                 }
 298                 printf("[1-%d", cnt);
 299                 if (menu_has_help(menu))
 300                         printf("?");
 301                 printf("]: ");
 302                 switch (input_mode) {
 303                 case oldconfig:
 304                 case silentoldconfig:
 305                         if (!is_new) {
 306                                 cnt = def;
 307                                 printf("%d\n", cnt);
 308                                 break;
 309                         }
 310                         check_stdin();
 311                         /* fall through */
 312                 case oldaskconfig:
 313                         fflush(stdout);
 314                         xfgets(line, 128, stdin);
 315                         strip(line);
 316                         if (line[0] == '?') {
 317                                 print_help(menu);
 318                                 continue;
 319                         }
 320                         if (!line[0])
 321                                 cnt = def;
 322                         else if (isdigit(line[0]))
 323                                 cnt = atoi(line);
 324                         else
 325                                 continue;
 326                         break;
 327                 default:
 328                         break;
 329                 }
 330
 331         conf_childs:
 332                 for (child = menu->list; child; child = child->next) {
 333                         if (!child->sym || !menu_is_visible(child))
 334                                 continue;
 335                         if (!--cnt)
 336                                 break;
 337                 }
 338                 if (!child)
 339                         continue;
 340                 if (line[0] && line[strlen(line) - 1] == '?') {
 341                         print_help(child);
 342                         continue;
 343                 }
 344                 sym_set_choice_value(sym, child->sym);
 345                 for (child = child->list; child; child = child->next) {
 346                         indent += 2;
 347                         conf(child);
 348                         indent -= 2;
 349                 }
 350                 return 1;
 351         }
 352 }
 353
 354 static void conf(struct menu *menu)
 355 {
 356         struct symbol *sym;
 357         struct property *prop;
 358         struct menu *child;
 359
 360         if (!menu_is_visible(menu))
 361                 return;
 362
 363         sym = menu->sym;
 364         prop = menu->prompt;
 365         if (prop) {
 366                 const char *prompt;
 367
 368                 switch (prop->type) {
 369                 case P_MENU:
 370                         if ((input_mode == silentoldconfig ||
 371                              input_mode == listnewconfig ||
 372                              input_mode == olddefconfig) &&
 373                             rootEntry != menu) {
 374                                 check_conf(menu);
 375                                 return;
 376                         }
 377                         /* fall through */
 378                 case P_COMMENT:
 379                         prompt = menu_get_prompt(menu);
 380                         if (prompt)
 381                                 printf("%*c\n%*c %s\n%*c\n",
 382                                         indent, '*',
 383                                         indent, '*', _(prompt),
 384                                         indent, '*');
 385                 default:
 386                         ;
 387                 }
 388         }
 389
 390         if (!sym)
 391                 goto conf_childs;
 392
 393         if (sym_is_choice(sym)) {
 394                 conf_choice(menu);
 395                 if (sym->curr.tri != mod)
 396                         return;
 397                 goto conf_childs;
 398         }
 399
 400         switch (sym->type) {
 401         case S_INT:
 402         case S_HEX:
 403         case S_STRING:
 404                 conf_string(menu);
 405                 break;
 406         default:
 407                 conf_sym(menu);
 408                 break;
 409         }
 410
 411 conf_childs:
 412         if (sym)
 413                 indent += 2;
 414         for (child = menu->list; child; child = child->next)
 415                 conf(child);
 416         if (sym)
 417                 indent -= 2;
 418 }
 419
 420 static void check_conf(struct menu *menu)
 421 {
 422         struct symbol *sym;
 423         struct menu *child;
 424
 425         if (!menu_is_visible(menu))
 426                 return;
 427
 428         sym = menu->sym;
 429         if (sym && !sym_has_value(sym)) {
 430                 if (sym_is_changable(sym) ||
 431                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
 432                         if (input_mode == listnewconfig) {
 433                                 if (sym->name && !sym_is_choice_value(sym)) {
 434                                         printf("%s%s\n", CONFIG_, sym->name);
 435                                 }
 436                         } else if (input_mode != olddefconfig) {
 437                                 if (!conf_cnt++)
 438                                         printf(_("*\n* Restart config...\n*\n"));
 439                                 rootEntry = menu_get_parent_menu(menu);
 440                                 conf(rootEntry);
 441                         }
 442                 }
 443         }
 444
 445         for (child = menu->list; child; child = child->next)
 446                 check_conf(child);
 447 }
 448
 449 #if 00 // || !defined __UCLIBC__ || \
 450         (defined UCLIBC_HAS_GETOPT_LONG || defined UCLIBC_HAS_GNU_GETOPT)
 451 static struct option long_opts[] = {
 452         {"oldaskconfig",    no_argument,       NULL, oldaskconfig},
 453         {"oldconfig",       no_argument,       NULL, oldconfig},
 454         {"silentoldconfig", no_argument,       NULL, silentoldconfig},
 455         {"defconfig",       optional_argument, NULL, defconfig},
 456         {"savedefconfig",   required_argument, NULL, savedefconfig},
 457         {"allnoconfig",     no_argument,       NULL, allnoconfig},
 458         {"allyesconfig",    no_argument,       NULL, allyesconfig},
 459         {"allmodconfig",    no_argument,       NULL, allmodconfig},
 460         {"alldefconfig",    no_argument,       NULL, alldefconfig},
 461         {"randconfig",      no_argument,       NULL, randconfig},
 462         {"listnewconfig",   no_argument,       NULL, listnewconfig},
 463         {"olddefconfig",    no_argument,       NULL, olddefconfig},
 464         /*
 465          * oldnoconfig is an alias of olddefconfig, because people already
 466          * are dependent on its behavior(sets new symbols to their default
 467          * value but not 'n') with the counter-intuitive name.
 468          */
 469         {"oldnoconfig",     no_argument,       NULL, olddefconfig},
 470         {NULL, 0, NULL, 0}
 471 };
 472
 473 static void conf_usage(const char *progname)
 474 {
 475
 476         printf("Usage: %s [option] <kconfig-file>\n", progname);
 477         printf("[option] is _one_ of the following:\n");
 478         printf("  --listnewconfig         List new options\n");
 479         printf("  --oldaskconfig          Start a new configuration using a line-oriented program\n");
 480         printf("  --oldconfig             Update a configuration using a provided .config as base\n");
 481         printf("  --silentoldconfig       Same as oldconfig, but quietly, additionally update deps\n");
 482         printf("  --olddefconfig          Same as silentoldconfig but sets new symbols to their default value\n");
 483         printf("  --oldnoconfig           An alias of olddefconfig\n");
 484         printf("  --defconfig <file>      New config with default defined in <file>\n");
 485         printf("  --savedefconfig <file>  Save the minimal current configuration to <file>\n");
 486         printf("  --allnoconfig           New config where all options are answered with no\n");
 487         printf("  --allyesconfig          New config where all options are answered with yes\n");
 488         printf("  --allmodconfig          New config where all options are answered with mod\n");
 489         printf("  --alldefconfig          New config with all symbols set to default\n");
 490         printf("  --randconfig            New config with random answer to all options\n");
 491 }
 492 #else
 493 static void conf_usage(const char *progname)
 494 {
 495
 496         printf("Usage: %s [option] <kconfig-file>\n", progname);
 497         printf("[option] is _one_ of the following:\n");
 498         printf("  -a, --oldaskconfig          Start a new configuration using a line-oriented program\n");
 499         printf("  -s, --silentoldconfig       Same as oldconfig, but quietly, additionally update deps\n");
 500         printf("  -o, --oldconfig             Update a configuration using a provided .config as base\n");
 501         printf("  -n, --allnoconfig           New config where all options are answered with no\n");
 502         printf("  -y, --allyesconfig          New config where all options are answered with yes\n");
 503         printf("  -m, --allmodconfig          New config where all options are answered with mod\n");
 504         printf("  -A, --alldefconfig          New config with all symbols set to default\n");
 505         printf("  -r, --randconfig            New config with random answer to all options\n");
 506         printf("  -D, --defconfig <file>      New config with default defined in <file>\n");
 507         printf("  -S, --savedefconfig <file>  Save the minimal current configuration to <file>\n");
 508         printf("  -l, --listnewconfig         List new options\n");
 509         printf("  -d, --olddefconfig          Same as silentoldconfig but sets new symbols to their default value\n");
 510         printf("  --oldnoconfig           An alias of olddefconfig\n");
 511
 512 }
 513 #endif
 514
 515 int main(int ac, char **av)
 516 {
 517         const char *progname = av[0];
 518         int opt;
 519         const char *name, *defconfig_file = NULL /* gcc uninit */;
 520         struct stat tmpstat;
 521
 522         setlocale(LC_ALL, "");
 523         bindtextdomain(PACKAGE, LOCALEDIR);
 524         textdomain(PACKAGE);
 525
 526         tty_stdio = isatty(0) && isatty(1) && isatty(2);
 527
 528 #if 00// !defined __UCLIBC__ || \
 529         (defined UCLIBC_HAS_GETOPT_LONG || defined UCLIBC_HAS_GNU_GETOPT)
 530         while ((opt = getopt_long(ac, av, "", long_opts, NULL)) != -1)
 531 #else
 532         char *gch = "asonymArDSld";
 533         while ((opt = getopt(ac, av, "asonymArD:S:ldh")) != -1)
 534 #endif
 535         {
 536                 char *x = memchr(gch, opt, strlen(gch));
 537                 if (x == NULL)
 538                         opt = '?';
 539                 else
 540                         opt = x - gch;
 541                 input_mode = (enum input_mode)opt;
 542                 switch (opt) {
 543                 case silentoldconfig:
 544                         sync_kconfig = 1;
 545                         break;
 546                 case defconfig:
 547                 case savedefconfig:
 548                         defconfig_file = optarg;
 549                         break;
 550                 case randconfig:
 551                 {
 552                         struct timeval now;
 553                         unsigned int seed;
 554                         char *seed_env;
 555
 556                         /*
 557                          * Use microseconds derived seed,
 558                          * compensate for systems where it may be zero
 559                          */
 560                         gettimeofday(&now, NULL);
 561                         seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
 562
 563                         seed_env = getenv("KCONFIG_SEED");
 564                         if( seed_env && *seed_env ) {
 565                                 char *endp;
 566                                 int tmp = (int)strtol(seed_env, &endp, 0);
 567                                 if (*endp == '\0') {
 568                                         seed = tmp;
 569                                 }
 570                         }
 571                         fprintf( stderr, "KCONFIG_SEED=0x%X\n", seed );
 572                         srand(seed);
 573                         break;
 574                 }
 575                 case oldaskconfig:
 576                 case oldconfig:
 577                 case allnoconfig:
 578                 case allyesconfig:
 579                 case allmodconfig:
 580                 case alldefconfig:
 581                 case listnewconfig:
 582                 case olddefconfig:
 583                         break;
 584                 case '?':
 585                         conf_usage(progname);
 586                         exit(1);
 587                         break;
 588                 }
 589         }
 590         if (ac == optind) {
 591                 printf(_("%s: Kconfig file missing\n"), av[0]);
 592                 conf_usage(progname);
 593                 exit(1);
 594         }
 595         name = av[optind];
 596         conf_parse(name);
 597         //zconfdump(stdout);
 598         if (sync_kconfig) {
 599                 name = conf_get_configname();
 600                 if (stat(name, &tmpstat)) {
 601                         fprintf(stderr, _("***\n"
 602                                 "*** Configuration file \"%s\" not found!\n"
 603                                 "***\n"
 604                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
 605                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
 606                                 "***\n"), name);
 607                         exit(1);
 608                 }
 609         }
 610
 611         switch (input_mode) {
 612         case defconfig:
 613                 if (!defconfig_file)
 614                         defconfig_file = conf_get_default_confname();
 615                 if (conf_read(defconfig_file)) {
 616                         printf(_("***\n"
 617                                 "*** Can't find default configuration \"%s\"!\n"
 618                                 "***\n"), defconfig_file);
 619                         exit(1);
 620                 }
 621                 break;
 622         case savedefconfig:
 623         case silentoldconfig:
 624         case oldaskconfig:
 625         case oldconfig:
 626         case listnewconfig:
 627         case olddefconfig:
 628                 conf_read(NULL);
 629                 break;
 630         case allnoconfig:
 631         case allyesconfig:
 632         case allmodconfig:
 633         case alldefconfig:
 634         case randconfig:
 635                 name = getenv("KCONFIG_ALLCONFIG");
 636                 if (!name)
 637                         break;
 638                 if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) {
 639                         if (conf_read_simple(name, S_DEF_USER)) {
 640                                 fprintf(stderr,
 641                                         _("*** Can't read seed configuration \"%s\"!\n"),
 642                                         name);
 643                                 exit(1);
 644                         }
 645                         break;
 646                 }
 647                 switch (input_mode) {
 648                 case allnoconfig:       name = "allno.config"; break;
 649                 case allyesconfig:      name = "allyes.config"; break;
 650                 case allmodconfig:      name = "allmod.config"; break;
 651                 case alldefconfig:      name = "alldef.config"; break;
 652                 case randconfig:        name = "allrandom.config"; break;
 653                 default: break;
 654                 }
 655                 if (conf_read_simple(name, S_DEF_USER) &&
 656                     conf_read_simple("all.config", S_DEF_USER)) {
 657                         fprintf(stderr,
 658                                 _("*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n"),
 659                                 name);
 660                         exit(1);
 661                 }
 662                 break;
 663         default:
 664                 break;
 665         }
 666
 667         if (sync_kconfig) {
 668                 if (conf_get_changed()) {
 669                         name = getenv("KCONFIG_NOSILENTUPDATE");
 670                         if (name && *name) {
 671                                 fprintf(stderr,
 672                                         _("\n*** The configuration requires explicit update.\n\n"));
 673                                 return 1;
 674                         }
 675                 }
 676                 valid_stdin = tty_stdio;
 677         }
 678
 679         switch (input_mode) {
 680         case allnoconfig:
 681                 conf_set_all_new_symbols(def_no);
 682                 break;
 683         case allyesconfig:
 684                 conf_set_all_new_symbols(def_yes);
 685                 break;
 686         case allmodconfig:
 687                 conf_set_all_new_symbols(def_mod);
 688                 break;
 689         case alldefconfig:
 690                 conf_set_all_new_symbols(def_default);
 691                 break;
 692         case randconfig:
 693                 /* Really nothing to do in this loop */
 694                 while (conf_set_all_new_symbols(def_random)) ;
 695                 break;
 696         case defconfig:
 697                 conf_set_all_new_symbols(def_default);
 698                 break;
 699         case savedefconfig:
 700                 break;
 701         case oldaskconfig:
 702                 rootEntry = &rootmenu;
 703                 conf(&rootmenu);
 704                 input_mode = silentoldconfig;
 705                 /* fall through */
 706         case oldconfig:
 707         case listnewconfig:
 708         case olddefconfig:
 709         case silentoldconfig:
 710                 /* Update until a loop caused no more changes */
 711                 do {
 712                         conf_cnt = 0;
 713                         check_conf(&rootmenu);
 714                 } while (conf_cnt &&
 715                          (input_mode != listnewconfig &&
 716                           input_mode != olddefconfig));
 717                 break;
 718         }
 719
 720         if (sync_kconfig) {
 721                 /* silentoldconfig is used during the build so we shall update autoconf.
 722                  * All other commands are only used to generate a config.
 723                  */
 724                 if (conf_get_changed() && conf_write(NULL)) {
 725                         fprintf(stderr, _("\n*** Error during writing of the configuration.\n\n"));
 726                         exit(1);
 727                 }
 728                 if (conf_write_autoconf()) {
 729                         fprintf(stderr, _("\n*** Error during update of the configuration.\n\n"));
 730                         return 1;
 731                 }
 732         } else if (input_mode == savedefconfig) {
 733                 if (conf_write_defconfig(defconfig_file)) {
 734                         fprintf(stderr, _("n*** Error while saving defconfig to: %s\n\n"),
 735                                 defconfig_file);
 736                         return 1;
 737                 }
 738         } else if (input_mode != listnewconfig) {
 739                 if (conf_write(NULL)) {
 740                         fprintf(stderr, _("\n*** Error during writing of the configuration.\n\n"));
 741                         exit(1);
 742                 }
 743         }
 744         return 0;
 745 }
 746
 747 /*
 748  * Helper function to facilitate fgets() by Jean Sacren.
 749  */
 750 void xfgets(char *str, int size, FILE *in)
 751 {
 752         if (fgets(str, size, in) == NULL)
 753                 fprintf(stderr, "\nError in reading or end of file.\n");
 754 }