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
  15 #define LKC_DIRECT_LINK
  16 #include "lkc.h"
  17
  18 static void conf(struct menu *menu);
  19 static void check_conf(struct menu *menu);
  20
  21 enum {
  22         ask_all,
  23         ask_new,
  24         ask_silent,
  25         set_default,
  26         set_yes,
  27         set_mod,
  28         set_no,
  29         set_random
  30 } input_mode = ask_all;
  31 char *defconfig_file;
  32
  33 static int indent = 1;
  34 static int valid_stdin = 1;
  35 static int conf_cnt;
  36 static char line[128];
  37 static struct menu *rootEntry;
  38
  39 static char nohelp_text[] = N_("Sorry, no help available for this option yet.\n");
  40
  41 static const char *get_help(struct menu *menu)
  42 {
  43         if (menu_has_help(menu))
  44                 return _(menu_get_help(menu));
  45         else
  46                 return nohelp_text;
  47 }
  48
  49 static void strip(char *str)
  50 {
  51         char *p = str;
  52         int l;
  53
  54         while ((isspace(*p)))
  55                 p++;
  56         l = strlen(p);
  57         if (p != str)
  58                 memmove(str, p, l + 1);
  59         if (!l)
  60                 return;
  61         p = str + l - 1;
  62         while ((isspace(*p)))
  63                 *p-- = 0;
  64 }
  65
  66 static void check_stdin(void)
  67 {
  68         if (!valid_stdin && input_mode == ask_silent) {
  69                 printf(_("aborted!\n\n"));
  70                 printf(_("Console input/output is redirected. "));
  71                 printf(_("Run 'make oldconfig' to update configuration.\n\n"));
  72                 exit(1);
  73         }
  74 }
  75
  76 static int conf_askvalue(struct symbol *sym, const char *def)
  77 {
  78         enum symbol_type type = sym_get_type(sym);
  79
  80         if (!sym_has_value(sym))
  81                 printf(_("(NEW) "));
  82
  83         line[0] = '\n';
  84         line[1] = 0;
  85
  86         if (!sym_is_changable(sym)) {
  87                 printf("%s\n", def);
  88                 line[0] = '\n';
  89                 line[1] = 0;
  90                 return 0;
  91         }
  92
  93         switch (input_mode) {
  94         case ask_new:
  95         case ask_silent:
  96                 if (sym_has_value(sym)) {
  97                         printf("%s\n", def);
  98                         return 0;
  99                 }
 100                 check_stdin();
 101         case ask_all:
 102                 fflush(stdout);
 103                 fgets(line, 128, stdin);
 104                 return 1;
 105         case set_default:
 106                 printf("%s\n", def);
 107                 return 1;
 108         default:
 109                 break;
 110         }
 111
 112         switch (type) {
 113         case S_INT:
 114         case S_HEX:
 115         case S_STRING:
 116                 printf("%s\n", def);
 117                 return 1;
 118         default:
 119                 ;
 120         }
 121         printf("%s", line);
 122         return 1;
 123 }
 124
 125 int conf_string(struct menu *menu)
 126 {
 127         struct symbol *sym = menu->sym;
 128         const char *def;
 129
 130         while (1) {
 131                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
 132                 printf("(%s) ", sym->name);
 133                 def = sym_get_string_value(sym);
 134                 if (sym_get_string_value(sym))
 135                         printf("[%s] ", def);
 136                 if (!conf_askvalue(sym, def))
 137                         return 0;
 138                 switch (line[0]) {
 139                 case '\n':
 140                         break;
 141                 case '?':
 142                         /* print help */
 143                         if (line[1] == '\n') {
 144                                 printf("\n%s\n", get_help(menu));
 145                                 def = NULL;
 146                                 break;
 147                         }
 148                 default:
 149                         line[strlen(line)-1] = 0;
 150                         def = line;
 151                 }
 152                 if (def && sym_set_string_value(sym, def))
 153                         return 0;
 154         }
 155 }
 156
 157 static int conf_sym(struct menu *menu)
 158 {
 159         struct symbol *sym = menu->sym;
 160         int type;
 161         tristate oldval, newval;
 162
 163         while (1) {
 164                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
 165                 if (sym->name)
 166                         printf("(%s) ", sym->name);
 167                 type = sym_get_type(sym);
 168                 putchar('[');
 169                 oldval = sym_get_tristate_value(sym);
 170                 switch (oldval) {
 171                 case no:
 172                         putchar('N');
 173                         break;
 174                 case mod:
 175                         putchar('M');
 176                         break;
 177                 case yes:
 178                         putchar('Y');
 179                         break;
 180                 }
 181                 if (oldval != no && sym_tristate_within_range(sym, no))
 182                         printf("/n");
 183                 if (oldval != mod && sym_tristate_within_range(sym, mod))
 184                         printf("/m");
 185                 if (oldval != yes && sym_tristate_within_range(sym, yes))
 186                         printf("/y");
 187                 if (menu_has_help(menu))
 188                         printf("/?");
 189                 printf("] ");
 190                 if (!conf_askvalue(sym, sym_get_string_value(sym)))
 191                         return 0;
 192                 strip(line);
 193
 194                 switch (line[0]) {
 195                 case 'n':
 196                 case 'N':
 197                         newval = no;
 198                         if (!line[1] || !strcmp(&line[1], "o"))
 199                                 break;
 200                         continue;
 201                 case 'm':
 202                 case 'M':
 203                         newval = mod;
 204                         if (!line[1])
 205                                 break;
 206                         continue;
 207                 case 'y':
 208                 case 'Y':
 209                         newval = yes;
 210                         if (!line[1] || !strcmp(&line[1], "es"))
 211                                 break;
 212                         continue;
 213                 case 0:
 214                         newval = oldval;
 215                         break;
 216                 case '?':
 217                         goto help;
 218                 default:
 219                         continue;
 220                 }
 221                 if (sym_set_tristate_value(sym, newval))
 222                         return 0;
 223 help:
 224                 printf("\n%s\n", get_help(menu));
 225         }
 226 }
 227
 228 static int conf_choice(struct menu *menu)
 229 {
 230         struct symbol *sym, *def_sym;
 231         struct menu *child;
 232         int type;
 233         bool is_new;
 234
 235         sym = menu->sym;
 236         type = sym_get_type(sym);
 237         is_new = !sym_has_value(sym);
 238         if (sym_is_changable(sym)) {
 239                 conf_sym(menu);
 240                 sym_calc_value(sym);
 241                 switch (sym_get_tristate_value(sym)) {
 242                 case no:
 243                         return 1;
 244                 case mod:
 245                         return 0;
 246                 case yes:
 247                         break;
 248                 }
 249         } else {
 250                 switch (sym_get_tristate_value(sym)) {
 251                 case no:
 252                         return 1;
 253                 case mod:
 254                         printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
 255                         return 0;
 256                 case yes:
 257                         break;
 258                 }
 259         }
 260
 261         while (1) {
 262                 int cnt, def;
 263
 264                 printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
 265                 def_sym = sym_get_choice_value(sym);
 266                 cnt = def = 0;
 267                 line[0] = 0;
 268                 for (child = menu->list; child; child = child->next) {
 269                         if (!menu_is_visible(child))
 270                                 continue;
 271                         if (!child->sym) {
 272                                 printf("%*c %s\n", indent, '*', _(menu_get_prompt(child)));
 273                                 continue;
 274                         }
 275                         cnt++;
 276                         if (child->sym == def_sym) {
 277                                 def = cnt;
 278                                 printf("%*c", indent, '>');
 279                         } else
 280                                 printf("%*c", indent, ' ');
 281                         printf(" %d. %s", cnt, _(menu_get_prompt(child)));
 282                         if (child->sym->name)
 283                                 printf(" (%s)", child->sym->name);
 284                         if (!sym_has_value(child->sym))
 285                                 printf(_(" (NEW)"));
 286                         printf("\n");
 287                 }
 288                 printf(_("%*schoice"), indent - 1, "");
 289                 if (cnt == 1) {
 290                         printf("[1]: 1\n");
 291                         goto conf_childs;
 292                 }
 293                 printf("[1-%d", cnt);
 294                 if (menu_has_help(menu))
 295                         printf("?");
 296                 printf("]: ");
 297                 switch (input_mode) {
 298                 case ask_new:
 299                 case ask_silent:
 300                         if (!is_new) {
 301                                 cnt = def;
 302                                 printf("%d\n", cnt);
 303                                 break;
 304                         }
 305                         check_stdin();
 306                 case ask_all:
 307                         fflush(stdout);
 308                         fgets(line, 128, stdin);
 309                         strip(line);
 310                         if (line[0] == '?') {
 311                                 printf("\n%s\n", get_help(menu));
 312                                 continue;
 313                         }
 314                         if (!line[0])
 315                                 cnt = def;
 316                         else if (isdigit(line[0]))
 317                                 cnt = atoi(line);
 318                         else
 319                                 continue;
 320                         break;
 321                 case set_default:
 322                         cnt = def;
 323                         printf("%d\n", cnt);
 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                         printf("\n%s\n", get_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 == ask_silent && rootEntry != menu) {
 369                                 check_conf(menu);
 370                                 return;
 371                         }
 372                 case P_COMMENT:
 373                         prompt = menu_get_prompt(menu);
 374                         if (prompt)
 375                                 printf("%*c\n%*c %s\n%*c\n",
 376                                         indent, '*',
 377                                         indent, '*', _(prompt),
 378                                         indent, '*');
 379                 default:
 380                         ;
 381                 }
 382         }
 383
 384         if (!sym)
 385                 goto conf_childs;
 386
 387         if (sym_is_choice(sym)) {
 388                 conf_choice(menu);
 389                 if (sym->curr.tri != mod)
 390                         return;
 391                 goto conf_childs;
 392         }
 393
 394         switch (sym->type) {
 395         case S_INT:
 396         case S_HEX:
 397         case S_STRING:
 398                 conf_string(menu);
 399                 break;
 400         default:
 401                 conf_sym(menu);
 402                 break;
 403         }
 404
 405 conf_childs:
 406         if (sym)
 407                 indent += 2;
 408         for (child = menu->list; child; child = child->next)
 409                 conf(child);
 410         if (sym)
 411                 indent -= 2;
 412 }
 413
 414 static void check_conf(struct menu *menu)
 415 {
 416         struct symbol *sym;
 417         struct menu *child;
 418
 419         if (!menu_is_visible(menu))
 420                 return;
 421
 422         sym = menu->sym;
 423         if (sym && !sym_has_value(sym)) {
 424                 if (sym_is_changable(sym) ||
 425                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
 426                         if (!conf_cnt++)
 427                                 printf(_("*\n* Restart config...\n*\n"));
 428                         rootEntry = menu_get_parent_menu(menu);
 429                         conf(rootEntry);
 430                 }
 431         }
 432
 433         for (child = menu->list; child; child = child->next)
 434                 check_conf(child);
 435 }
 436
 437 static void conf_do_update(void)
 438 {
 439         /* Update until a loop caused no more changes */
 440         do {
 441                 conf_cnt = 0;
 442                 check_conf(&rootmenu);
 443         } while (conf_cnt);
 444 }
 445
 446 static int conf_silent_update(void)
 447 {
 448         const char *name;
 449
 450         if (conf_get_changed()) {
 451                 name = getenv("KCONFIG_NOSILENTUPDATE");
 452                 if (name && *name) {
 453                         fprintf(stderr,
 454                         _("\n*** Kernel configuration requires explicit update.\n\n"));
 455                         return 1;
 456                 }
 457                 conf_do_update();
 458         }
 459         return 0;
 460 }
 461
 462 static int conf_update(void)
 463 {
 464         rootEntry = &rootmenu;
 465         conf(&rootmenu);
 466         if (input_mode == ask_all) {
 467                 input_mode = ask_silent;
 468                 valid_stdin = 1;
 469         }
 470         conf_do_update();
 471         return 0;
 472 }
 473
 474 int main(int ac, char **av)
 475 {
 476         int opt;
 477         const char *name;
 478         struct stat tmpstat;
 479
 480         setlocale(LC_ALL, "");
 481         bindtextdomain(PACKAGE, LOCALEDIR);
 482         textdomain(PACKAGE);
 483
 484         while ((opt = getopt(ac, av, "osdD:nmyrh")) != -1) {
 485                 switch (opt) {
 486                 case 'o':
 487                         input_mode = ask_new;
 488                         break;
 489                 case 's':
 490                         input_mode = ask_silent;
 491                         valid_stdin = isatty(0) && isatty(1) && isatty(2);
 492                         break;
 493                 case 'd':
 494                         input_mode = set_default;
 495                         break;
 496                 case 'D':
 497                         input_mode = set_default;
 498                         defconfig_file = optarg;
 499                         break;
 500                 case 'n':
 501                         input_mode = set_no;
 502                         break;
 503                 case 'm':
 504                         input_mode = set_mod;
 505                         break;
 506                 case 'y':
 507                         input_mode = set_yes;
 508                         break;
 509                 case 'r':
 510                         input_mode = set_random;
 511                         srand(time(NULL));
 512                         break;
 513                 case 'h':
 514                         printf(_("See README for usage info\n"));
 515                         exit(0);
 516                         break;
 517                 default:
 518                         fprintf(stderr, _("See README for usage info\n"));
 519                         exit(1);
 520                 }
 521         }
 522         if (ac == optind) {
 523                 printf(_("%s: Kconfig file missing\n"), av[0]);
 524                 exit(1);
 525         }
 526         name = av[optind];
 527         conf_parse(name);
 528         //zconfdump(stdout);
 529         switch (input_mode) {
 530         case set_default:
 531                 if (!defconfig_file)
 532                         defconfig_file = conf_get_default_confname();
 533                 if (conf_read(defconfig_file)) {
 534                         printf(_("***\n"
 535                                 "*** Can't find default configuration \"%s\"!\n"
 536                                 "***\n"), defconfig_file);
 537                         exit(1);
 538                 }
 539                 break;
 540         case ask_silent:
 541                 if (stat(".config", &tmpstat)) {
 542                         printf(_("***\n"
 543                                 "*** You have not yet configured your kernel!\n"
 544                                 "*** (missing kernel .config file)\n"
 545                                 "***\n"
 546                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
 547                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
 548                                 "***\n"));
 549                         exit(1);
 550                 }
 551         case ask_all:
 552         case ask_new:
 553                 conf_read(NULL);
 554                 break;
 555         case set_no:
 556         case set_mod:
 557         case set_yes:
 558         case set_random:
 559                 name = getenv("KCONFIG_ALLCONFIG");
 560                 if (name && !stat(name, &tmpstat)) {
 561                         conf_read_simple(name, S_DEF_USER);
 562                         break;
 563                 }
 564                 switch (input_mode) {
 565                 case set_no:     name = "allno.config"; break;
 566                 case set_mod:    name = "allmod.config"; break;
 567                 case set_yes:    name = "allyes.config"; break;
 568                 case set_random: name = "allrandom.config"; break;
 569                 default: break;
 570                 }
 571                 if (!stat(name, &tmpstat))
 572                         conf_read_simple(name, S_DEF_USER);
 573                 else if (!stat("all.config", &tmpstat))
 574                         conf_read_simple("all.config", S_DEF_USER);
 575                 break;
 576         default:
 577                 break;
 578         }
 579         switch (input_mode) {
 580         case set_no:
 581                 conf_set_all_new_symbols(def_no);
 582                 break;
 583         case set_yes:
 584                 conf_set_all_new_symbols(def_yes);
 585                 break;
 586         case set_mod:
 587                 conf_set_all_new_symbols(def_mod);
 588                 break;
 589         case set_random:
 590                 conf_set_all_new_symbols(def_random);
 591                 break;
 592         case ask_silent:
 593         case ask_new:
 594                 if (conf_silent_update())
 595                         exit(1);
 596                 break;
 597         case ask_all:
 598         case set_default:
 599                 if (conf_update())
 600                         exit(1);
 601                 break;
 602         }
 603
 604         if (conf_get_changed() && conf_write(NULL)) {
 605                 fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 606                 exit(1);
 607         }
 608         /* ask_silent is used during the build so we shall update autoconf.
 609          * All other commands are only used to generate a config.
 610          */
 611         if (input_mode == ask_silent && conf_write_autoconf()) {
 612                 fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 613                 return 1;
 614         }
 615         return 0;
 616 }