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