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 static void conf(struct menu *menu);
  20 static void check_conf(struct menu *menu);
  21
  22 enum {
  23         ask_all,
  24         ask_new,
  25         ask_silent,
  26         set_default,
  27         set_yes,
  28         set_mod,
  29         set_no,
  30         set_random
  31 } input_mode = ask_all;
  32 char *defconfig_file;
  33
  34 static int indent = 1;
  35 static int valid_stdin = 1;
  36 static int sync_kconfig;
  37 static int conf_cnt;
  38 static char line[128];
  39 static struct menu *rootEntry;
  40
  41 static char nohelp_text[] = N_("Sorry, no help available for this option yet.\n");
  42
  43 static const char *get_help(struct menu *menu)
  44 {
  45         if (menu_has_help(menu))
  46                 return _(menu_get_help(menu));
  47         else
  48                 return nohelp_text;
  49 }
  50
  51 static void strip(char *str)
  52 {
  53         char *p = str;
  54         int l;
  55
  56         while ((isspace(*p)))
  57                 p++;
  58         l = strlen(p);
  59         if (p != str)
  60                 memmove(str, p, l + 1);
  61         if (!l)
  62                 return;
  63         p = str + l - 1;
  64         while ((isspace(*p)))
  65                 *p-- = 0;
  66 }
  67
  68 static void check_stdin(void)
  69 {
  70         if (!valid_stdin) {
  71                 printf(_("aborted!\n\n"));
  72                 printf(_("Console input/output is redirected. "));
  73                 printf(_("Run 'make oldconfig' to update configuration.\n\n"));
  74                 exit(1);
  75         }
  76 }
  77
  78 static int conf_askvalue(struct symbol *sym, const char *def)
  79 {
  80         enum symbol_type type = sym_get_type(sym);
  81
  82         if (!sym_has_value(sym))
  83                 printf(_("(NEW) "));
  84
  85         line[0] = '\n';
  86         line[1] = 0;
  87
  88         if (!sym_is_changable(sym)) {
  89                 printf("%s\n", def);
  90                 line[0] = '\n';
  91                 line[1] = 0;
  92                 return 0;
  93         }
  94
  95         switch (input_mode) {
  96         case ask_new:
  97         case ask_silent:
  98                 if (sym_has_value(sym)) {
  99                         printf("%s\n", def);
 100                         return 0;
 101                 }
 102                 check_stdin();
 103         case ask_all:
 104                 fflush(stdout);
 105                 fgets(line, 128, stdin);
 106                 return 1;
 107         default:
 108                 break;
 109         }
 110
 111         switch (type) {
 112         case S_INT:
 113         case S_HEX:
 114         case S_STRING:
 115                 printf("%s\n", def);
 116                 return 1;
 117         default:
 118                 ;
 119         }
 120         printf("%s", line);
 121         return 1;
 122 }
 123
 124 int conf_string(struct menu *menu)
 125 {
 126         struct symbol *sym = menu->sym;
 127         const char *def;
 128
 129         while (1) {
 130                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
 131                 printf("(%s) ", sym->name);
 132                 def = sym_get_string_value(sym);
 133                 if (sym_get_string_value(sym))
 134                         printf("[%s] ", def);
 135                 if (!conf_askvalue(sym, def))
 136                         return 0;
 137                 switch (line[0]) {
 138                 case '\n':
 139                         break;
 140                 case '?':
 141                         /* print help */
 142                         if (line[1] == '\n') {
 143                                 printf("\n%s\n", get_help(menu));
 144                                 def = NULL;
 145                                 break;
 146                         }
 147                 default:
 148                         line[strlen(line)-1] = 0;
 149                         def = line;
 150                 }
 151                 if (def && sym_set_string_value(sym, def))
 152                         return 0;
 153         }
 154 }
 155
 156 static int conf_sym(struct menu *menu)
 157 {
 158         struct symbol *sym = menu->sym;
 159         int type;
 160         tristate oldval, newval;
 161
 162         while (1) {
 163                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
 164                 if (sym->name)
 165                         printf("(%s) ", sym->name);
 166                 type = sym_get_type(sym);
 167                 putchar('[');
 168                 oldval = sym_get_tristate_value(sym);
 169                 switch (oldval) {
 170                 case no:
 171                         putchar('N');
 172                         break;
 173                 case mod:
 174                         putchar('M');
 175                         break;
 176                 case yes:
 177                         putchar('Y');
 178                         break;
 179                 }
 180                 if (oldval != no && sym_tristate_within_range(sym, no))
 181                         printf("/n");
 182                 if (oldval != mod && sym_tristate_within_range(sym, mod))
 183                         printf("/m");
 184                 if (oldval != yes && sym_tristate_within_range(sym, yes))
 185                         printf("/y");
 186                 if (menu_has_help(menu))
 187                         printf("/?");
 188                 printf("] ");
 189                 if (!conf_askvalue(sym, sym_get_string_value(sym)))
 190                         return 0;
 191                 strip(line);
 192
 193                 switch (line[0]) {
 194                 case 'n':
 195                 case 'N':
 196                         newval = no;
 197                         if (!line[1] || !strcmp(&line[1], "o"))
 198                                 break;
 199                         continue;
 200                 case 'm':
 201                 case 'M':
 202                         newval = mod;
 203                         if (!line[1])
 204                                 break;
 205                         continue;
 206                 case 'y':
 207                 case 'Y':
 208                         newval = yes;
 209                         if (!line[1] || !strcmp(&line[1], "es"))
 210                                 break;
 211                         continue;
 212                 case 0:
 213                         newval = oldval;
 214                         break;
 215                 case '?':
 216                         goto help;
 217                 default:
 218                         continue;
 219                 }
 220                 if (sym_set_tristate_value(sym, newval))
 221                         return 0;
 222 help:
 223                 printf("\n%s\n", get_help(menu));
 224         }
 225 }
 226
 227 static int conf_choice(struct menu *menu)
 228 {
 229         struct symbol *sym, *def_sym;
 230         struct menu *child;
 231         int type;
 232         bool is_new;
 233
 234         sym = menu->sym;
 235         type = sym_get_type(sym);
 236         is_new = !sym_has_value(sym);
 237         if (sym_is_changable(sym)) {
 238                 conf_sym(menu);
 239                 sym_calc_value(sym);
 240                 switch (sym_get_tristate_value(sym)) {
 241                 case no:
 242                         return 1;
 243                 case mod:
 244                         return 0;
 245                 case yes:
 246                         break;
 247                 }
 248         } else {
 249                 switch (sym_get_tristate_value(sym)) {
 250                 case no:
 251                         return 1;
 252                 case mod:
 253                         printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
 254                         return 0;
 255                 case yes:
 256                         break;
 257                 }
 258         }
 259
 260         while (1) {
 261                 int cnt, def;
 262
 263                 printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
 264                 def_sym = sym_get_choice_value(sym);
 265                 cnt = def = 0;
 266                 line[0] = 0;
 267                 for (child = menu->list; child; child = child->next) {
 268                         if (!menu_is_visible(child))
 269                                 continue;
 270                         if (!child->sym) {
 271                                 printf("%*c %s\n", indent, '*', _(menu_get_prompt(child)));
 272                                 continue;
 273                         }
 274                         cnt++;
 275                         if (child->sym == def_sym) {
 276                                 def = cnt;
 277                                 printf("%*c", indent, '>');
 278                         } else
 279                                 printf("%*c", indent, ' ');
 280                         printf(" %d. %s", cnt, _(menu_get_prompt(child)));
 281                         if (child->sym->name)
 282                                 printf(" (%s)", child->sym->name);
 283                         if (!sym_has_value(child->sym))
 284                                 printf(_(" (NEW)"));
 285                         printf("\n");
 286                 }
 287                 printf(_("%*schoice"), indent - 1, "");
 288                 if (cnt == 1) {
 289                         printf("[1]: 1\n");
 290                         goto conf_childs;
 291                 }
 292                 printf("[1-%d", cnt);
 293                 if (menu_has_help(menu))
 294                         printf("?");
 295                 printf("]: ");
 296                 switch (input_mode) {
 297                 case ask_new:
 298                 case ask_silent:
 299                         if (!is_new) {
 300                                 cnt = def;
 301                                 printf("%d\n", cnt);
 302                                 break;
 303                         }
 304                         check_stdin();
 305                 case ask_all:
 306                         fflush(stdout);
 307                         fgets(line, 128, stdin);
 308                         strip(line);
 309                         if (line[0] == '?') {
 310                                 printf("\n%s\n", get_help(menu));
 311                                 continue;
 312                         }
 313                         if (!line[0])
 314                                 cnt = def;
 315                         else if (isdigit(line[0]))
 316                                 cnt = atoi(line);
 317                         else
 318                                 continue;
 319                         break;
 320                 default:
 321                         break;
 322                 }
 323
 324         conf_childs:
 325                 for (child = menu->list; child; child = child->next) {
 326                         if (!child->sym || !menu_is_visible(child))
 327                                 continue;
 328                         if (!--cnt)
 329                                 break;
 330                 }
 331                 if (!child)
 332                         continue;
 333                 if (line[strlen(line) - 1] == '?') {
 334                         printf("\n%s\n", get_help(child));
 335                         continue;
 336                 }
 337                 sym_set_choice_value(sym, child->sym);
 338                 for (child = child->list; child; child = child->next) {
 339                         indent += 2;
 340                         conf(child);
 341                         indent -= 2;
 342                 }
 343                 return 1;
 344         }
 345 }
 346
 347 static void conf(struct menu *menu)
 348 {
 349         struct symbol *sym;
 350         struct property *prop;
 351         struct menu *child;
 352
 353         if (!menu_is_visible(menu))
 354                 return;
 355
 356         sym = menu->sym;
 357         prop = menu->prompt;
 358         if (prop) {
 359                 const char *prompt;
 360
 361                 switch (prop->type) {
 362                 case P_MENU:
 363                         if (input_mode == ask_silent && rootEntry != menu) {
 364                                 check_conf(menu);
 365                                 return;
 366                         }
 367                 case P_COMMENT:
 368                         prompt = menu_get_prompt(menu);
 369                         if (prompt)
 370                                 printf("%*c\n%*c %s\n%*c\n",
 371                                         indent, '*',
 372                                         indent, '*', _(prompt),
 373                                         indent, '*');
 374                 default:
 375                         ;
 376                 }
 377         }
 378
 379         if (!sym)
 380                 goto conf_childs;
 381
 382         if (sym_is_choice(sym)) {
 383                 conf_choice(menu);
 384                 if (sym->curr.tri != mod)
 385                         return;
 386                 goto conf_childs;
 387         }
 388
 389         switch (sym->type) {
 390         case S_INT:
 391         case S_HEX:
 392         case S_STRING:
 393                 conf_string(menu);
 394                 break;
 395         default:
 396                 conf_sym(menu);
 397                 break;
 398         }
 399
 400 conf_childs:
 401         if (sym)
 402                 indent += 2;
 403         for (child = menu->list; child; child = child->next)
 404                 conf(child);
 405         if (sym)
 406                 indent -= 2;
 407 }
 408
 409 static void check_conf(struct menu *menu)
 410 {
 411         struct symbol *sym;
 412         struct menu *child;
 413
 414         if (!menu_is_visible(menu))
 415                 return;
 416
 417         sym = menu->sym;
 418         if (sym && !sym_has_value(sym)) {
 419                 if (sym_is_changable(sym) ||
 420                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
 421                         if (!conf_cnt++)
 422                                 printf(_("*\n* Restart config...\n*\n"));
 423                         rootEntry = menu_get_parent_menu(menu);
 424                         conf(rootEntry);
 425                 }
 426         }
 427
 428         for (child = menu->list; child; child = child->next)
 429                 check_conf(child);
 430 }
 431
 432 int main(int ac, char **av)
 433 {
 434         int opt;
 435         const char *name;
 436         struct stat tmpstat;
 437
 438         setlocale(LC_ALL, "");
 439         bindtextdomain(PACKAGE, LOCALEDIR);
 440         textdomain(PACKAGE);
 441
 442         while ((opt = getopt(ac, av, "osdD:nmyrh")) != -1) {
 443                 switch (opt) {
 444                 case 'o':
 445                         input_mode = ask_silent;
 446                         break;
 447                 case 's':
 448                         input_mode = ask_silent;
 449                         sync_kconfig = 1;
 450                         break;
 451                 case 'd':
 452                         input_mode = set_default;
 453                         break;
 454                 case 'D':
 455                         input_mode = set_default;
 456                         defconfig_file = optarg;
 457                         break;
 458                 case 'n':
 459                         input_mode = set_no;
 460                         break;
 461                 case 'm':
 462                         input_mode = set_mod;
 463                         break;
 464                 case 'y':
 465                         input_mode = set_yes;
 466                         break;
 467                 case 'r':
 468                 {
 469                         struct timeval now;
 470                         unsigned int seed;
 471
 472                         /*
 473                          * Use microseconds derived seed,
 474                          * compensate for systems where it may be zero
 475                          */
 476                         gettimeofday(&now, NULL);
 477
 478                         seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
 479                         srand(seed);
 480
 481                         input_mode = set_random;
 482                         break;
 483                 }
 484                 case 'h':
 485                         printf(_("See README for usage info\n"));
 486                         exit(0);
 487                         break;
 488                 default:
 489                         fprintf(stderr, _("See README for usage info\n"));
 490                         exit(1);
 491                 }
 492         }
 493         if (ac == optind) {
 494                 printf(_("%s: Kconfig file missing\n"), av[0]);
 495                 exit(1);
 496         }
 497         name = av[optind];
 498         conf_parse(name);
 499         //zconfdump(stdout);
 500         if (sync_kconfig) {
 501                 if (stat(".config", &tmpstat)) {
 502                         fprintf(stderr, _("***\n"
 503                                 "*** You have not yet configured your kernel!\n"
 504                                 "*** (missing kernel .config file)\n"
 505                                 "***\n"
 506                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
 507                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
 508                                 "***\n"));
 509                         exit(1);
 510                 }
 511         }
 512
 513         switch (input_mode) {
 514         case set_default:
 515                 if (!defconfig_file)
 516                         defconfig_file = conf_get_default_confname();
 517                 if (conf_read(defconfig_file)) {
 518                         printf(_("***\n"
 519                                 "*** Can't find default configuration \"%s\"!\n"
 520                                 "***\n"), defconfig_file);
 521                         exit(1);
 522                 }
 523                 break;
 524         case ask_silent:
 525         case ask_all:
 526         case ask_new:
 527                 conf_read(NULL);
 528                 break;
 529         case set_no:
 530         case set_mod:
 531         case set_yes:
 532         case set_random:
 533                 name = getenv("KCONFIG_ALLCONFIG");
 534                 if (name && !stat(name, &tmpstat)) {
 535                         conf_read_simple(name, S_DEF_USER);
 536                         break;
 537                 }
 538                 switch (input_mode) {
 539                 case set_no:     name = "allno.config"; break;
 540                 case set_mod:    name = "allmod.config"; break;
 541                 case set_yes:    name = "allyes.config"; break;
 542                 case set_random: name = "allrandom.config"; break;
 543                 default: break;
 544                 }
 545                 if (!stat(name, &tmpstat))
 546                         conf_read_simple(name, S_DEF_USER);
 547                 else if (!stat("all.config", &tmpstat))
 548                         conf_read_simple("all.config", S_DEF_USER);
 549                 break;
 550         default:
 551                 break;
 552         }
 553
 554         if (sync_kconfig) {
 555                 if (conf_get_changed()) {
 556                         name = getenv("KCONFIG_NOSILENTUPDATE");
 557                         if (name && *name) {
 558                                 fprintf(stderr,
 559                                         _("\n*** Kernel configuration requires explicit update.\n\n"));
 560                                 return 1;
 561                         }
 562                 }
 563                 valid_stdin = isatty(0) && isatty(1) && isatty(2);
 564         }
 565
 566         switch (input_mode) {
 567         case set_no:
 568                 conf_set_all_new_symbols(def_no);
 569                 break;
 570         case set_yes:
 571                 conf_set_all_new_symbols(def_yes);
 572                 break;
 573         case set_mod:
 574                 conf_set_all_new_symbols(def_mod);
 575                 break;
 576         case set_random:
 577                 conf_set_all_new_symbols(def_random);
 578                 break;
 579         case set_default:
 580                 conf_set_all_new_symbols(def_default);
 581                 break;
 582         case ask_new:
 583         case ask_all:
 584                 rootEntry = &rootmenu;
 585                 conf(&rootmenu);
 586                 input_mode = ask_silent;
 587                 /* fall through */
 588         case ask_silent:
 589                 /* Update until a loop caused no more changes */
 590                 do {
 591                         conf_cnt = 0;
 592                         check_conf(&rootmenu);
 593                 } while (conf_cnt);
 594                 break;
 595         }
 596
 597         if (sync_kconfig) {
 598                 /* silentoldconfig is used during the build so we shall update autoconf.
 599                  * All other commands are only used to generate a config.
 600                  */
 601                 if (conf_get_changed() && conf_write(NULL)) {
 602                         fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 603                         exit(1);
 604                 }
 605                 if (conf_write_autoconf()) {
 606                         fprintf(stderr, _("\n*** Error during update of the kernel configuration.\n\n"));
 607                         return 1;
 608                 }
 609         } else {
 610                 if (conf_write(NULL)) {
 611                         fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 612                         exit(1);
 613                 }
 614         }
 615         return 0;
 616 }