scripts/kconfig/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 <sys/stat.h>
  14 #include <sys/time.h>
  15
  16 #define LKC_DIRECT_LINK
  17 #include "lkc.h"
  18
  19 /* Return codes */
  20 #define EUNSETOPT       2       /* if -B and -b are used and unset config
  21                                  * options were found */
  22
  23 static void conf(struct menu *menu);
  24 static void check_conf(struct menu *menu);
  25
  26 enum {
  27         ask_all,
  28         ask_new,
  29         ask_silent,
  30         dont_ask,
  31         dont_ask_dont_tell,
  32         set_default,
  33         set_yes,
  34         set_mod,
  35         set_no,
  36         set_random
  37 } input_mode = ask_all;
  38 char *defconfig_file;
  39
  40 static int indent = 1;
  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 static int unset_variables;
  47
  48 static void print_help(struct menu *menu)
  49 {
  50         struct gstr help = str_new();
  51
  52         menu_get_ext_help(menu, &help);
  53
  54         printf("\n%s\n", str_get(&help));
  55         str_free(&help);
  56 }
  57
  58 static void strip(char *str)
  59 {
  60         char *p = str;
  61         int l;
  62
  63         while ((isspace(*p)))
  64                 p++;
  65         l = strlen(p);
  66         if (p != str)
  67                 memmove(str, p, l + 1);
  68         if (!l)
  69                 return;
  70         p = str + l - 1;
  71         while ((isspace(*p)))
  72                 *p-- = 0;
  73 }
  74
  75 static void check_stdin(void)
  76 {
  77         if (!valid_stdin) {
  78                 printf(_("aborted!\n\n"));
  79                 printf(_("Console input/output is redirected. "));
  80                 printf(_("Run 'make oldconfig' to update configuration.\n\n"));
  81                 exit(1);
  82         }
  83 }
  84
  85 static int conf_askvalue(struct symbol *sym, const char *def)
  86 {
  87         enum symbol_type type = sym_get_type(sym);
  88
  89         if (!sym_has_value(sym))
  90                 printf(_("(NEW) "));
  91
  92         line[0] = '\n';
  93         line[1] = 0;
  94
  95         if (!sym_is_changable(sym)) {
  96                 printf("%s\n", def);
  97                 line[0] = '\n';
  98                 line[1] = 0;
  99                 return 0;
 100         }
 101
 102         switch (input_mode) {
 103         case ask_new:
 104         case ask_silent:
 105                 if (sym_has_value(sym)) {
 106                         printf("%s\n", def);
 107                         return 0;
 108                 }
 109                 check_stdin();
 110         case ask_all:
 111                 fflush(stdout);
 112                 fgets(line, 128, stdin);
 113                 return 1;
 114         default:
 115                 break;
 116         }
 117
 118         switch (type) {
 119         case S_INT:
 120         case S_HEX:
 121         case S_STRING:
 122                 printf("%s\n", def);
 123                 return 1;
 124         default:
 125                 ;
 126         }
 127         printf("%s", line);
 128         return 1;
 129 }
 130
 131 static int conf_string(struct menu *menu)
 132 {
 133         struct symbol *sym = menu->sym;
 134         const char *def;
 135
 136         while (1) {
 137                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
 138                 printf("(%s) ", sym->name);
 139                 def = sym_get_string_value(sym);
 140                 if (sym_get_string_value(sym))
 141                         printf("[%s] ", def);
 142                 if (!conf_askvalue(sym, def))
 143                         return 0;
 144                 switch (line[0]) {
 145                 case '\n':
 146                         break;
 147                 case '?':
 148                         /* print help */
 149                         if (line[1] == '\n') {
 150                                 print_help(menu);
 151                                 def = NULL;
 152                                 break;
 153                         }
 154                 default:
 155                         line[strlen(line)-1] = 0;
 156                         def = line;
 157                 }
 158                 if (def && sym_set_string_value(sym, def))
 159                         return 0;
 160         }
 161 }
 162
 163 static int conf_sym(struct menu *menu)
 164 {
 165         struct symbol *sym = menu->sym;
 166         tristate oldval, newval;
 167
 168         while (1) {
 169                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
 170                 if (sym->name)
 171                         printf("(%s) ", sym->name);
 172                 putchar('[');
 173                 oldval = sym_get_tristate_value(sym);
 174                 switch (oldval) {
 175                 case no:
 176                         putchar('N');
 177                         break;
 178                 case mod:
 179                         putchar('M');
 180                         break;
 181                 case yes:
 182                         putchar('Y');
 183                         break;
 184                 }
 185                 if (oldval != no && sym_tristate_within_range(sym, no))
 186                         printf("/n");
 187                 if (oldval != mod && sym_tristate_within_range(sym, mod))
 188                         printf("/m");
 189                 if (oldval != yes && sym_tristate_within_range(sym, yes))
 190                         printf("/y");
 191                 if (menu_has_help(menu))
 192                         printf("/?");
 193                 printf("] ");
 194                 if (!conf_askvalue(sym, sym_get_string_value(sym)))
 195                         return 0;
 196                 strip(line);
 197
 198                 switch (line[0]) {
 199                 case 'n':
 200                 case 'N':
 201                         newval = no;
 202                         if (!line[1] || !strcmp(&line[1], "o"))
 203                                 break;
 204                         continue;
 205                 case 'm':
 206                 case 'M':
 207                         newval = mod;
 208                         if (!line[1])
 209                                 break;
 210                         continue;
 211                 case 'y':
 212                 case 'Y':
 213                         newval = yes;
 214                         if (!line[1] || !strcmp(&line[1], "es"))
 215                                 break;
 216                         continue;
 217                 case 0:
 218                         newval = oldval;
 219                         break;
 220                 case '?':
 221                         goto help;
 222                 default:
 223                         continue;
 224                 }
 225                 if (sym_set_tristate_value(sym, newval))
 226                         return 0;
 227 help:
 228                 print_help(menu);
 229         }
 230 }
 231
 232 static int conf_choice(struct menu *menu)
 233 {
 234         struct symbol *sym, *def_sym;
 235         struct menu *child;
 236         bool is_new;
 237
 238         sym = menu->sym;
 239         is_new = !sym_has_value(sym);
 240         if (sym_is_changable(sym)) {
 241                 conf_sym(menu);
 242                 sym_calc_value(sym);
 243                 switch (sym_get_tristate_value(sym)) {
 244                 case no:
 245                         return 1;
 246                 case mod:
 247                         return 0;
 248                 case yes:
 249                         break;
 250                 }
 251         } else {
 252                 switch (sym_get_tristate_value(sym)) {
 253                 case no:
 254                         return 1;
 255                 case mod:
 256                         printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
 257                         return 0;
 258                 case yes:
 259                         break;
 260                 }
 261         }
 262
 263         while (1) {
 264                 int cnt, def;
 265
 266                 printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
 267                 def_sym = sym_get_choice_value(sym);
 268                 cnt = def = 0;
 269                 line[0] = 0;
 270                 for (child = menu->list; child; child = child->next) {
 271                         if (!menu_is_visible(child))
 272                                 continue;
 273                         if (!child->sym) {
 274                                 printf("%*c %s\n", indent, '*', _(menu_get_prompt(child)));
 275                                 continue;
 276                         }
 277                         cnt++;
 278                         if (child->sym == def_sym) {
 279                                 def = cnt;
 280                                 printf("%*c", indent, '>');
 281                         } else
 282                                 printf("%*c", indent, ' ');
 283                         printf(" %d. %s", cnt, _(menu_get_prompt(child)));
 284                         if (child->sym->name)
 285                                 printf(" (%s)", child->sym->name);
 286                         if (!sym_has_value(child->sym))
 287                                 printf(_(" (NEW)"));
 288                         printf("\n");
 289                 }
 290                 printf(_("%*schoice"), indent - 1, "");
 291                 if (cnt == 1) {
 292                         printf("[1]: 1\n");
 293                         goto conf_childs;
 294                 }
 295                 printf("[1-%d", cnt);
 296                 if (menu_has_help(menu))
 297                         printf("?");
 298                 printf("]: ");
 299                 switch (input_mode) {
 300                 case ask_new:
 301                 case ask_silent:
 302                         if (!is_new) {
 303                                 cnt = def;
 304                                 printf("%d\n", cnt);
 305                                 break;
 306                         }
 307                         check_stdin();
 308                 case ask_all:
 309                         fflush(stdout);
 310                         fgets(line, 128, stdin);
 311                         strip(line);
 312                         if (line[0] == '?') {
 313                                 print_help(menu);
 314                                 continue;
 315                         }
 316                         if (!line[0])
 317                                 cnt = def;
 318                         else if (isdigit(line[0]))
 319                                 cnt = atoi(line);
 320                         else
 321                                 continue;
 322                         break;
 323                 default:
 324                         break;
 325                 }
 326
 327         conf_childs:
 328                 for (child = menu->list; child; child = child->next) {
 329                         if (!child->sym || !menu_is_visible(child))
 330                                 continue;
 331                         if (!--cnt)
 332                                 break;
 333                 }
 334                 if (!child)
 335                         continue;
 336                 if (line[strlen(line) - 1] == '?') {
 337                         print_help(child);
 338                         continue;
 339                 }
 340                 sym_set_choice_value(sym, child->sym);
 341                 for (child = child->list; child; child = child->next) {
 342                         indent += 2;
 343                         conf(child);
 344                         indent -= 2;
 345                 }
 346                 return 1;
 347         }
 348 }
 349
 350 static void conf(struct menu *menu)
 351 {
 352         struct symbol *sym;
 353         struct property *prop;
 354         struct menu *child;
 355
 356         if (!menu_is_visible(menu))
 357                 return;
 358
 359         sym = menu->sym;
 360         prop = menu->prompt;
 361         if (prop) {
 362                 const char *prompt;
 363
 364                 switch (prop->type) {
 365                 case P_MENU:
 366                         if ((input_mode == ask_silent ||
 367                              input_mode == dont_ask ||
 368                              input_mode == dont_ask_dont_tell) &&
 369                             rootEntry != menu) {
 370                                 check_conf(menu);
 371                                 return;
 372                         }
 373                 case P_COMMENT:
 374                         prompt = menu_get_prompt(menu);
 375                         if (prompt)
 376                                 printf("%*c\n%*c %s\n%*c\n",
 377                                         indent, '*',
 378                                         indent, '*', _(prompt),
 379                                         indent, '*');
 380                 default:
 381                         ;
 382                 }
 383         }
 384
 385         if (!sym)
 386                 goto conf_childs;
 387
 388         if (sym_is_choice(sym)) {
 389                 conf_choice(menu);
 390                 if (sym->curr.tri != mod)
 391                         return;
 392                 goto conf_childs;
 393         }
 394
 395         switch (sym->type) {
 396         case S_INT:
 397         case S_HEX:
 398         case S_STRING:
 399                 conf_string(menu);
 400                 break;
 401         default:
 402                 conf_sym(menu);
 403                 break;
 404         }
 405
 406 conf_childs:
 407         if (sym)
 408                 indent += 2;
 409         for (child = menu->list; child; child = child->next)
 410                 conf(child);
 411         if (sym)
 412                 indent -= 2;
 413 }
 414
 415 static void check_conf(struct menu *menu)
 416 {
 417         struct symbol *sym;
 418         struct menu *child;
 419
 420         if (!menu_is_visible(menu))
 421                 return;
 422
 423         sym = menu->sym;
 424         if (sym && !sym_has_value(sym)) {
 425                 if (sym_is_changable(sym) ||
 426                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
 427                         if (input_mode == dont_ask ||
 428                             input_mode == dont_ask_dont_tell) {
 429                                 if (input_mode == dont_ask &&
 430                                     sym->name && !sym_is_choice_value(sym)) {
 431                                         if (!unset_variables)
 432                                                 fprintf(stderr, "The following"
 433                                                   " variables are not set:\n");
 434                                         fprintf(stderr, "CONFIG_%s\n",
 435                                                         sym->name);
 436                                         unset_variables++;
 437                                 }
 438                         } else {
 439                                 if (!conf_cnt++)
 440                                         printf(_("*\n* Restart config...\n*\n"));
 441                                 rootEntry = menu_get_parent_menu(menu);
 442                                 conf(rootEntry);
 443                         }
 444                 }
 445         }
 446
 447         for (child = menu->list; child; child = child->next)
 448                 check_conf(child);
 449 }
 450
 451 int main(int ac, char **av)
 452 {
 453         int opt;
 454         const char *name;
 455         struct stat tmpstat;
 456
 457         setlocale(LC_ALL, "");
 458         bindtextdomain(PACKAGE, LOCALEDIR);
 459         textdomain(PACKAGE);
 460
 461         while ((opt = getopt(ac, av, "osbBdD:nmyrh")) != -1) {
 462                 switch (opt) {
 463                 case 'o':
 464                         input_mode = ask_silent;
 465                         break;
 466                 case 's':
 467                         input_mode = ask_silent;
 468                         sync_kconfig = 1;
 469                         break;
 470                 case 'b':
 471                         input_mode = dont_ask;
 472                         break;
 473                 case 'B':
 474                         input_mode = dont_ask_dont_tell;
 475                         break;
 476                 case 'd':
 477                         input_mode = set_default;
 478                         break;
 479                 case 'D':
 480                         input_mode = set_default;
 481                         defconfig_file = optarg;
 482                         break;
 483                 case 'n':
 484                         input_mode = set_no;
 485                         break;
 486                 case 'm':
 487                         input_mode = set_mod;
 488                         break;
 489                 case 'y':
 490                         input_mode = set_yes;
 491                         break;
 492                 case 'r':
 493                 {
 494                         struct timeval now;
 495                         unsigned int seed;
 496
 497                         /*
 498                          * Use microseconds derived seed,
 499                          * compensate for systems where it may be zero
 500                          */
 501                         gettimeofday(&now, NULL);
 502
 503                         seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
 504                         srand(seed);
 505
 506                         input_mode = set_random;
 507                         break;
 508                 }
 509                 case 'h':
 510                         printf(_("See README for usage info\n"));
 511                         exit(0);
 512                         break;
 513                 default:
 514                         fprintf(stderr, _("See README for usage info\n"));
 515                         exit(1);
 516                 }
 517         }
 518         if (ac == optind) {
 519                 printf(_("%s: Kconfig file missing\n"), av[0]);
 520                 exit(1);
 521         }
 522         name = av[optind];
 523         conf_parse(name);
 524         //zconfdump(stdout);
 525         if (sync_kconfig) {
 526                 name = conf_get_configname();
 527                 if (stat(name, &tmpstat)) {
 528                         fprintf(stderr, _("***\n"
 529                                 "*** You have not yet configured your kernel!\n"
 530                                 "*** (missing kernel config file \"%s\")\n"
 531                                 "***\n"
 532                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
 533                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
 534                                 "***\n"), name);
 535                         exit(1);
 536                 }
 537         }
 538
 539         switch (input_mode) {
 540         case set_default:
 541                 if (!defconfig_file)
 542                         defconfig_file = conf_get_default_confname();
 543                 if (conf_read(defconfig_file)) {
 544                         printf(_("***\n"
 545                                 "*** Can't find default configuration \"%s\"!\n"
 546                                 "***\n"), defconfig_file);
 547                         exit(1);
 548                 }
 549                 break;
 550         case ask_silent:
 551         case ask_all:
 552         case ask_new:
 553         case dont_ask:
 554         case dont_ask_dont_tell:
 555                 conf_read(NULL);
 556                 break;
 557         case set_no:
 558         case set_mod:
 559         case set_yes:
 560         case set_random:
 561                 name = getenv("KCONFIG_ALLCONFIG");
 562                 if (name && !stat(name, &tmpstat)) {
 563                         conf_read_simple(name, S_DEF_USER);
 564                         break;
 565                 }
 566                 switch (input_mode) {
 567                 case set_no:     name = "allno.config"; break;
 568                 case set_mod:    name = "allmod.config"; break;
 569                 case set_yes:    name = "allyes.config"; break;
 570                 case set_random: name = "allrandom.config"; break;
 571                 default: break;
 572                 }
 573                 if (!stat(name, &tmpstat))
 574                         conf_read_simple(name, S_DEF_USER);
 575                 else if (!stat("all.config", &tmpstat))
 576                         conf_read_simple("all.config", S_DEF_USER);
 577                 break;
 578         default:
 579                 break;
 580         }
 581
 582         if (sync_kconfig) {
 583                 if (conf_get_changed()) {
 584                         name = getenv("KCONFIG_NOSILENTUPDATE");
 585                         if (name && *name) {
 586                                 fprintf(stderr,
 587                                         _("\n*** Kernel configuration requires explicit update.\n\n"));
 588                                 return 1;
 589                         }
 590                 }
 591                 valid_stdin = isatty(0) && isatty(1) && isatty(2);
 592         }
 593
 594         switch (input_mode) {
 595         case set_no:
 596                 conf_set_all_new_symbols(def_no);
 597                 break;
 598         case set_yes:
 599                 conf_set_all_new_symbols(def_yes);
 600                 break;
 601         case set_mod:
 602                 conf_set_all_new_symbols(def_mod);
 603                 break;
 604         case set_random:
 605                 conf_set_all_new_symbols(def_random);
 606                 break;
 607         case set_default:
 608                 conf_set_all_new_symbols(def_default);
 609                 break;
 610         case ask_new:
 611         case ask_all:
 612                 rootEntry = &rootmenu;
 613                 conf(&rootmenu);
 614                 input_mode = ask_silent;
 615                 /* fall through */
 616         case dont_ask:
 617         case dont_ask_dont_tell:
 618         case ask_silent:
 619                 /* Update until a loop caused no more changes */
 620                 do {
 621                         conf_cnt = 0;
 622                         check_conf(&rootmenu);
 623                 } while (conf_cnt &&
 624                          (input_mode != dont_ask &&
 625                           input_mode != dont_ask_dont_tell));
 626                 break;
 627         }
 628
 629         if (sync_kconfig) {
 630                 /* silentoldconfig is used during the build so we shall update autoconf.
 631                  * All other commands are only used to generate a config.
 632                  */
 633                 if (conf_get_changed() && conf_write(NULL)) {
 634                         fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 635                         exit(1);
 636                 }
 637                 if (conf_write_autoconf()) {
 638                         fprintf(stderr, _("\n*** Error during update of the kernel configuration.\n\n"));
 639                         return 1;
 640                 }
 641         } else if (!unset_variables || input_mode != dont_ask) {
 642                 if (conf_write(NULL)) {
 643                         fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 644                         exit(1);
 645                 }
 646         }
 647         return unset_variables ? EUNSETOPT : 0;
 648 }