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 <getopt.h>
  14 #include <sys/stat.h>
  15 #include <sys/time.h>
  16
  17 #define LKC_DIRECT_LINK
  18 #include "lkc.h"
  19
  20 /* Return codes */
  21 #define EUNSETOPT       2       /* if -B and -b are used and unset config
  22                                  * options were found */
  23
  24 static void conf(struct menu *menu);
  25 static void check_conf(struct menu *menu);
  26
  27 enum input_mode {
  28         oldaskconfig,
  29         silentoldconfig,
  30         oldconfig,
  31         allnoconfig,
  32         allyesconfig,
  33         allmodconfig,
  34         randconfig,
  35         defconfig,
  36         nonint_oldconfig,
  37         oldnoconfig,
  38 } input_mode = oldaskconfig;
  39
  40 char *defconfig_file;
  41
  42 static int indent = 1;
  43 static int valid_stdin = 1;
  44 static int sync_kconfig;
  45 static int conf_cnt;
  46 static char line[128];
  47 static struct menu *rootEntry;
  48 static int unset_variables;
  49
  50 static void print_help(struct menu *menu)
  51 {
  52         struct gstr help = str_new();
  53
  54         menu_get_ext_help(menu, &help);
  55
  56         printf("\n%s\n", str_get(&help));
  57         str_free(&help);
  58 }
  59
  60 static void strip(char *str)
  61 {
  62         char *p = str;
  63         int l;
  64
  65         while ((isspace(*p)))
  66                 p++;
  67         l = strlen(p);
  68         if (p != str)
  69                 memmove(str, p, l + 1);
  70         if (!l)
  71                 return;
  72         p = str + l - 1;
  73         while ((isspace(*p)))
  74                 *p-- = 0;
  75 }
  76
  77 static void check_stdin(void)
  78 {
  79         if (!valid_stdin) {
  80                 printf(_("aborted!\n\n"));
  81                 printf(_("Console input/output is redirected. "));
  82                 printf(_("Run 'make oldconfig' to update configuration.\n\n"));
  83                 exit(1);
  84         }
  85 }
  86
  87 static int conf_askvalue(struct symbol *sym, const char *def)
  88 {
  89         enum symbol_type type = sym_get_type(sym);
  90
  91         if (!sym_has_value(sym))
  92                 printf(_("(NEW) "));
  93
  94         line[0] = '\n';
  95         line[1] = 0;
  96
  97         if (!sym_is_changable(sym)) {
  98                 printf("%s\n", def);
  99                 line[0] = '\n';
 100                 line[1] = 0;
 101                 return 0;
 102         }
 103
 104         switch (input_mode) {
 105         case oldconfig:
 106         case silentoldconfig:
 107                 if (sym_has_value(sym)) {
 108                         printf("%s\n", def);
 109                         return 0;
 110                 }
 111                 check_stdin();
 112         case oldaskconfig:
 113                 fflush(stdout);
 114                 fgets(line, 128, stdin);
 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                 default:
 157                         line[strlen(line)-1] = 0;
 158                         def = line;
 159                 }
 160                 if (def && sym_set_string_value(sym, def))
 161                         return 0;
 162         }
 163 }
 164
 165 static int conf_sym(struct menu *menu)
 166 {
 167         struct symbol *sym = menu->sym;
 168         tristate oldval, newval;
 169
 170         while (1) {
 171                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
 172                 if (sym->name)
 173                         printf("(%s) ", sym->name);
 174                 putchar('[');
 175                 oldval = sym_get_tristate_value(sym);
 176                 switch (oldval) {
 177                 case no:
 178                         putchar('N');
 179                         break;
 180                 case mod:
 181                         putchar('M');
 182                         break;
 183                 case yes:
 184                         putchar('Y');
 185                         break;
 186                 }
 187                 if (oldval != no && sym_tristate_within_range(sym, no))
 188                         printf("/n");
 189                 if (oldval != mod && sym_tristate_within_range(sym, mod))
 190                         printf("/m");
 191                 if (oldval != yes && sym_tristate_within_range(sym, yes))
 192                         printf("/y");
 193                 if (menu_has_help(menu))
 194                         printf("/?");
 195                 printf("] ");
 196                 if (!conf_askvalue(sym, sym_get_string_value(sym)))
 197                         return 0;
 198                 strip(line);
 199
 200                 switch (line[0]) {
 201                 case 'n':
 202                 case 'N':
 203                         newval = no;
 204                         if (!line[1] || !strcmp(&line[1], "o"))
 205                                 break;
 206                         continue;
 207                 case 'm':
 208                 case 'M':
 209                         newval = mod;
 210                         if (!line[1])
 211                                 break;
 212                         continue;
 213                 case 'y':
 214                 case 'Y':
 215                         newval = yes;
 216                         if (!line[1] || !strcmp(&line[1], "es"))
 217                                 break;
 218                         continue;
 219                 case 0:
 220                         newval = oldval;
 221                         break;
 222                 case '?':
 223                         goto help;
 224                 default:
 225                         continue;
 226                 }
 227                 if (sym_set_tristate_value(sym, newval))
 228                         return 0;
 229 help:
 230                 print_help(menu);
 231         }
 232 }
 233
 234 static int conf_choice(struct menu *menu)
 235 {
 236         struct symbol *sym, *def_sym;
 237         struct menu *child;
 238         bool is_new;
 239
 240         sym = menu->sym;
 241         is_new = !sym_has_value(sym);
 242         if (sym_is_changable(sym)) {
 243                 conf_sym(menu);
 244                 sym_calc_value(sym);
 245                 switch (sym_get_tristate_value(sym)) {
 246                 case no:
 247                         return 1;
 248                 case mod:
 249                         return 0;
 250                 case yes:
 251                         break;
 252                 }
 253         } else {
 254                 switch (sym_get_tristate_value(sym)) {
 255                 case no:
 256                         return 1;
 257                 case mod:
 258                         printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
 259                         return 0;
 260                 case yes:
 261                         break;
 262                 }
 263         }
 264
 265         while (1) {
 266                 int cnt, def;
 267
 268                 printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
 269                 def_sym = sym_get_choice_value(sym);
 270                 cnt = def = 0;
 271                 line[0] = 0;
 272                 for (child = menu->list; child; child = child->next) {
 273                         if (!menu_is_visible(child))
 274                                 continue;
 275                         if (!child->sym) {
 276                                 printf("%*c %s\n", indent, '*', _(menu_get_prompt(child)));
 277                                 continue;
 278                         }
 279                         cnt++;
 280                         if (child->sym == def_sym) {
 281                                 def = cnt;
 282                                 printf("%*c", indent, '>');
 283                         } else
 284                                 printf("%*c", indent, ' ');
 285                         printf(" %d. %s", cnt, _(menu_get_prompt(child)));
 286                         if (child->sym->name)
 287                                 printf(" (%s)", child->sym->name);
 288                         if (!sym_has_value(child->sym))
 289                                 printf(_(" (NEW)"));
 290                         printf("\n");
 291                 }
 292                 printf(_("%*schoice"), indent - 1, "");
 293                 if (cnt == 1) {
 294                         printf("[1]: 1\n");
 295                         goto conf_childs;
 296                 }
 297                 printf("[1-%d", cnt);
 298                 if (menu_has_help(menu))
 299                         printf("?");
 300                 printf("]: ");
 301                 switch (input_mode) {
 302                 case oldconfig:
 303                 case silentoldconfig:
 304                         if (!is_new) {
 305                                 cnt = def;
 306                                 printf("%d\n", cnt);
 307                                 break;
 308                         }
 309                         check_stdin();
 310                 case oldaskconfig:
 311                         fflush(stdout);
 312                         fgets(line, 128, stdin);
 313                         strip(line);
 314                         if (line[0] == '?') {
 315                                 print_help(menu);
 316                                 continue;
 317                         }
 318                         if (!line[0])
 319                                 cnt = def;
 320                         else if (isdigit(line[0]))
 321                                 cnt = atoi(line);
 322                         else
 323                                 continue;
 324                         break;
 325                 default:
 326                         break;
 327                 }
 328
 329         conf_childs:
 330                 for (child = menu->list; child; child = child->next) {
 331                         if (!child->sym || !menu_is_visible(child))
 332                                 continue;
 333                         if (!--cnt)
 334                                 break;
 335                 }
 336                 if (!child)
 337                         continue;
 338                 if (line[strlen(line) - 1] == '?') {
 339                         print_help(child);
 340                         continue;
 341                 }
 342                 sym_set_choice_value(sym, child->sym);
 343                 for (child = child->list; child; child = child->next) {
 344                         indent += 2;
 345                         conf(child);
 346                         indent -= 2;
 347                 }
 348                 return 1;
 349         }
 350 }
 351
 352 static void conf(struct menu *menu)
 353 {
 354         struct symbol *sym;
 355         struct property *prop;
 356         struct menu *child;
 357
 358         if (!menu_is_visible(menu))
 359                 return;
 360
 361         sym = menu->sym;
 362         prop = menu->prompt;
 363         if (prop) {
 364                 const char *prompt;
 365
 366                 switch (prop->type) {
 367                 case P_MENU:
 368                         if ((input_mode == silentoldconfig ||
 369                              input_mode == nonint_oldconfig ||
 370                              input_mode == oldnoconfig) &&
 371                             rootEntry != menu) {
 372                                 check_conf(menu);
 373                                 return;
 374                         }
 375                 case P_COMMENT:
 376                         prompt = menu_get_prompt(menu);
 377                         if (prompt)
 378                                 printf("%*c\n%*c %s\n%*c\n",
 379                                         indent, '*',
 380                                         indent, '*', _(prompt),
 381                                         indent, '*');
 382                 default:
 383                         ;
 384                 }
 385         }
 386
 387         if (!sym)
 388                 goto conf_childs;
 389
 390         if (sym_is_choice(sym)) {
 391                 conf_choice(menu);
 392                 if (sym->curr.tri != mod)
 393                         return;
 394                 goto conf_childs;
 395         }
 396
 397         switch (sym->type) {
 398         case S_INT:
 399         case S_HEX:
 400         case S_STRING:
 401                 conf_string(menu);
 402                 break;
 403         default:
 404                 conf_sym(menu);
 405                 break;
 406         }
 407
 408 conf_childs:
 409         if (sym)
 410                 indent += 2;
 411         for (child = menu->list; child; child = child->next)
 412                 conf(child);
 413         if (sym)
 414                 indent -= 2;
 415 }
 416
 417 static void check_conf(struct menu *menu)
 418 {
 419         struct symbol *sym;
 420         struct menu *child;
 421
 422         if (!menu_is_visible(menu))
 423                 return;
 424
 425         sym = menu->sym;
 426         if (sym && !sym_has_value(sym)) {
 427                 if (sym_is_changable(sym) ||
 428                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
 429                         if (input_mode == nonint_oldconfig ||
 430                             input_mode == oldnoconfig) {
 431                                 if (input_mode == nonint_oldconfig &&
 432                                     sym->name && !sym_is_choice_value(sym)) {
 433                                         if (!unset_variables)
 434                                                 fprintf(stderr, "The following"
 435                                                   " variables are not set:\n");
 436                                         fprintf(stderr, "CONFIG_%s\n",
 437                                                         sym->name);
 438                                         unset_variables++;
 439                                 }
 440                         } else {
 441                                 if (!conf_cnt++)
 442                                         printf(_("*\n* Restart config...\n*\n"));
 443                                 rootEntry = menu_get_parent_menu(menu);
 444                                 conf(rootEntry);
 445                         }
 446                 }
 447         }
 448
 449         for (child = menu->list; child; child = child->next)
 450                 check_conf(child);
 451 }
 452
 453 static struct option long_opts[] = {
 454         {"oldaskconfig",    no_argument,       NULL, oldaskconfig},
 455         {"oldconfig",       no_argument,       NULL, oldconfig},
 456         {"silentoldconfig", no_argument,       NULL, silentoldconfig},
 457         {"defconfig",       optional_argument, NULL, defconfig},
 458         {"allnoconfig",     no_argument,       NULL, allnoconfig},
 459         {"allyesconfig",    no_argument,       NULL, allyesconfig},
 460         {"allmodconfig",    no_argument,       NULL, allmodconfig},
 461         {"randconfig",      no_argument,       NULL, randconfig},
 462         {"nonint_oldconfig",       no_argument, NULL, nonint_oldconfig},
 463         {"oldnoconfig",     no_argument,       NULL, oldnoconfig},
 464         {NULL, 0, NULL, 0}
 465 };
 466
 467 int main(int ac, char **av)
 468 {
 469         int opt;
 470         const char *name;
 471         struct stat tmpstat;
 472
 473         setlocale(LC_ALL, "");
 474         bindtextdomain(PACKAGE, LOCALEDIR);
 475         textdomain(PACKAGE);
 476
 477         while ((opt = getopt_long_only(ac, av, "", long_opts, NULL)) != -1) {
 478                 input_mode = (enum input_mode)opt;
 479                 switch (opt) {
 480                 case silentoldconfig:
 481                         sync_kconfig = 1;
 482                         break;
 483                 case defconfig:
 484                         defconfig_file = optarg;
 485                         break;
 486                 case randconfig:
 487                 {
 488                         struct timeval now;
 489                         unsigned int seed;
 490
 491                         /*
 492                          * Use microseconds derived seed,
 493                          * compensate for systems where it may be zero
 494                          */
 495                         gettimeofday(&now, NULL);
 496
 497                         seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
 498                         srand(seed);
 499                         break;
 500                 }
 501                 case '?':
 502                         fprintf(stderr, _("See README for usage info\n"));
 503                         exit(1);
 504                         break;
 505                 }
 506         }
 507         if (ac == optind) {
 508                 printf(_("%s: Kconfig file missing\n"), av[0]);
 509                 exit(1);
 510         }
 511         name = av[optind];
 512         conf_parse(name);
 513         //zconfdump(stdout);
 514         if (sync_kconfig) {
 515                 name = conf_get_configname();
 516                 if (stat(name, &tmpstat)) {
 517                         fprintf(stderr, _("***\n"
 518                                 "*** You have not yet configured your kernel!\n"
 519                                 "*** (missing kernel config file \"%s\")\n"
 520                                 "***\n"
 521                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
 522                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
 523                                 "***\n"), name);
 524                         exit(1);
 525                 }
 526         }
 527
 528         switch (input_mode) {
 529         case defconfig:
 530                 if (!defconfig_file)
 531                         defconfig_file = conf_get_default_confname();
 532                 if (conf_read(defconfig_file)) {
 533                         printf(_("***\n"
 534                                 "*** Can't find default configuration \"%s\"!\n"
 535                                 "***\n"), defconfig_file);
 536                         exit(1);
 537                 }
 538                 break;
 539         case silentoldconfig:
 540         case oldaskconfig:
 541         case oldconfig:
 542         case nonint_oldconfig:
 543         case oldnoconfig:
 544                 conf_read(NULL);
 545                 break;
 546         case allnoconfig:
 547         case allyesconfig:
 548         case allmodconfig:
 549         case randconfig:
 550                 name = getenv("KCONFIG_ALLCONFIG");
 551                 if (name && !stat(name, &tmpstat)) {
 552                         conf_read_simple(name, S_DEF_USER);
 553                         break;
 554                 }
 555                 switch (input_mode) {
 556                 case allnoconfig:       name = "allno.config"; break;
 557                 case allyesconfig:      name = "allyes.config"; break;
 558                 case allmodconfig:      name = "allmod.config"; break;
 559                 case randconfig:        name = "allrandom.config"; break;
 560                 default: break;
 561                 }
 562                 if (!stat(name, &tmpstat))
 563                         conf_read_simple(name, S_DEF_USER);
 564                 else if (!stat("all.config", &tmpstat))
 565                         conf_read_simple("all.config", S_DEF_USER);
 566                 break;
 567         default:
 568                 break;
 569         }
 570
 571         if (sync_kconfig) {
 572                 if (conf_get_changed()) {
 573                         name = getenv("KCONFIG_NOSILENTUPDATE");
 574                         if (name && *name) {
 575                                 fprintf(stderr,
 576                                         _("\n*** Kernel configuration requires explicit update.\n\n"));
 577                                 return 1;
 578                         }
 579                 }
 580                 valid_stdin = isatty(0) && isatty(1) && isatty(2);
 581         }
 582
 583         switch (input_mode) {
 584         case allnoconfig:
 585                 conf_set_all_new_symbols(def_no);
 586                 break;
 587         case allyesconfig:
 588                 conf_set_all_new_symbols(def_yes);
 589                 break;
 590         case allmodconfig:
 591                 conf_set_all_new_symbols(def_mod);
 592                 break;
 593         case randconfig:
 594                 conf_set_all_new_symbols(def_random);
 595                 break;
 596         case defconfig:
 597                 conf_set_all_new_symbols(def_default);
 598                 break;
 599         case oldconfig:
 600         case oldaskconfig:
 601                 rootEntry = &rootmenu;
 602                 conf(&rootmenu);
 603                 input_mode = silentoldconfig;
 604                 /* fall through */
 605         case nonint_oldconfig:
 606         case oldnoconfig:
 607         case silentoldconfig:
 608                 /* Update until a loop caused no more changes */
 609                 do {
 610                         conf_cnt = 0;
 611                         check_conf(&rootmenu);
 612                 } while (conf_cnt &&
 613                          (input_mode != nonint_oldconfig &&
 614                           input_mode != oldnoconfig));
 615                 break;
 616         }
 617
 618         if (sync_kconfig) {
 619                 /* silentoldconfig is used during the build so we shall update autoconf.
 620                  * All other commands are only used to generate a config.
 621                  */
 622                 if (conf_get_changed() && conf_write(NULL)) {
 623                         fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 624                         exit(1);
 625                 }
 626                 if (conf_write_autoconf()) {
 627                         fprintf(stderr, _("\n*** Error during update of the kernel configuration.\n\n"));
 628                         return 1;
 629                 }
 630         } else if (!unset_variables || input_mode != nonint_oldconfig) {
 631                 if (conf_write(NULL)) {
 632                         fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 633                         exit(1);
 634                 }
 635         }
 636         return unset_variables ? EUNSETOPT : 0;
 637 }