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 <ctype.h>
   7 #include <stdlib.h>
   8 #include <stdio.h>
   9 #include <string.h>
  10 #include <unistd.h>
  11 #include <time.h>
  12 #include <sys/stat.h>
  13
  14 #define LKC_DIRECT_LINK
  15 #include "lkc.h"
  16
  17 static void conf(struct menu *menu);
  18 static void check_conf(struct menu *menu);
  19
  20 enum {
  21         ask_all,
  22         ask_new,
  23         ask_silent,
  24         set_default,
  25         set_yes,
  26         set_mod,
  27         set_no,
  28         set_random
  29 } input_mode = ask_all;
  30 char *defconfig_file;
  31
  32 static int indent = 1;
  33 static int valid_stdin = 1;
  34 static int conf_cnt;
  35 static char line[128];
  36 static struct menu *rootEntry;
  37
  38 static char nohelp_text[] = N_("Sorry, no help available for this option yet.\n");
  39
  40 static void strip(char *str)
  41 {
  42         char *p = str;
  43         int l;
  44
  45         while ((isspace(*p)))
  46                 p++;
  47         l = strlen(p);
  48         if (p != str)
  49                 memmove(str, p, l + 1);
  50         if (!l)
  51                 return;
  52         p = str + l - 1;
  53         while ((isspace(*p)))
  54                 *p-- = 0;
  55 }
  56
  57 static void check_stdin(void)
  58 {
  59         if (!valid_stdin && input_mode == ask_silent) {
  60                 printf(_("aborted!\n\n"));
  61                 printf(_("Console input/output is redirected. "));
  62                 printf(_("Run 'make oldconfig' to update configuration.\n\n"));
  63                 exit(1);
  64         }
  65 }
  66
  67 static void conf_askvalue(struct symbol *sym, const char *def)
  68 {
  69         enum symbol_type type = sym_get_type(sym);
  70         tristate val;
  71
  72         if (!sym_has_value(sym))
  73                 printf("(NEW) ");
  74
  75         line[0] = '\n';
  76         line[1] = 0;
  77
  78         if (!sym_is_changable(sym)) {
  79                 printf("%s\n", def);
  80                 line[0] = '\n';
  81                 line[1] = 0;
  82                 return;
  83         }
  84
  85         switch (input_mode) {
  86         case set_no:
  87         case set_mod:
  88         case set_yes:
  89         case set_random:
  90                 if (sym_has_value(sym)) {
  91                         printf("%s\n", def);
  92                         return;
  93                 }
  94                 break;
  95         case ask_new:
  96         case ask_silent:
  97                 if (sym_has_value(sym)) {
  98                         printf("%s\n", def);
  99                         return;
 100                 }
 101                 check_stdin();
 102         case ask_all:
 103                 fflush(stdout);
 104                 fgets(line, 128, stdin);
 105                 return;
 106         case set_default:
 107                 printf("%s\n", def);
 108                 return;
 109         default:
 110                 break;
 111         }
 112
 113         switch (type) {
 114         case S_INT:
 115         case S_HEX:
 116         case S_STRING:
 117                 printf("%s\n", def);
 118                 return;
 119         default:
 120                 ;
 121         }
 122         switch (input_mode) {
 123         case set_yes:
 124                 if (sym_tristate_within_range(sym, yes)) {
 125                         line[0] = 'y';
 126                         line[1] = '\n';
 127                         line[2] = 0;
 128                         break;
 129                 }
 130         case set_mod:
 131                 if (type == S_TRISTATE) {
 132                         if (sym_tristate_within_range(sym, mod)) {
 133                                 line[0] = 'm';
 134                                 line[1] = '\n';
 135                                 line[2] = 0;
 136                                 break;
 137                         }
 138                 } else {
 139                         if (sym_tristate_within_range(sym, yes)) {
 140                                 line[0] = 'y';
 141                                 line[1] = '\n';
 142                                 line[2] = 0;
 143                                 break;
 144                         }
 145                 }
 146         case set_no:
 147                 if (sym_tristate_within_range(sym, no)) {
 148                         line[0] = 'n';
 149                         line[1] = '\n';
 150                         line[2] = 0;
 151                         break;
 152                 }
 153         case set_random:
 154                 do {
 155                         val = (tristate)(random() % 3);
 156                 } while (!sym_tristate_within_range(sym, val));
 157                 switch (val) {
 158                 case no: line[0] = 'n'; break;
 159                 case mod: line[0] = 'm'; break;
 160                 case yes: line[0] = 'y'; break;
 161                 }
 162                 line[1] = '\n';
 163                 line[2] = 0;
 164                 break;
 165         default:
 166                 break;
 167         }
 168         printf("%s", line);
 169 }
 170
 171 int conf_string(struct menu *menu)
 172 {
 173         struct symbol *sym = menu->sym;
 174         const char *def, *help;
 175
 176         while (1) {
 177                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
 178                 printf("(%s) ", sym->name);
 179                 def = sym_get_string_value(sym);
 180                 if (sym_get_string_value(sym))
 181                         printf("[%s] ", def);
 182                 conf_askvalue(sym, def);
 183                 switch (line[0]) {
 184                 case '\n':
 185                         break;
 186                 case '?':
 187                         /* print help */
 188                         if (line[1] == '\n') {
 189                                 help = nohelp_text;
 190                                 if (menu->sym->help)
 191                                         help = menu->sym->help;
 192                                 printf("\n%s\n", menu->sym->help);
 193                                 def = NULL;
 194                                 break;
 195                         }
 196                 default:
 197                         line[strlen(line)-1] = 0;
 198                         def = line;
 199                 }
 200                 if (def && sym_set_string_value(sym, def))
 201                         return 0;
 202         }
 203 }
 204
 205 static int conf_sym(struct menu *menu)
 206 {
 207         struct symbol *sym = menu->sym;
 208         int type;
 209         tristate oldval, newval;
 210         const char *help;
 211
 212         while (1) {
 213                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
 214                 if (sym->name)
 215                         printf("(%s) ", sym->name);
 216                 type = sym_get_type(sym);
 217                 putchar('[');
 218                 oldval = sym_get_tristate_value(sym);
 219                 switch (oldval) {
 220                 case no:
 221                         putchar('N');
 222                         break;
 223                 case mod:
 224                         putchar('M');
 225                         break;
 226                 case yes:
 227                         putchar('Y');
 228                         break;
 229                 }
 230                 if (oldval != no && sym_tristate_within_range(sym, no))
 231                         printf("/n");
 232                 if (oldval != mod && sym_tristate_within_range(sym, mod))
 233                         printf("/m");
 234                 if (oldval != yes && sym_tristate_within_range(sym, yes))
 235                         printf("/y");
 236                 if (sym->help)
 237                         printf("/?");
 238                 printf("] ");
 239                 conf_askvalue(sym, sym_get_string_value(sym));
 240                 strip(line);
 241
 242                 switch (line[0]) {
 243                 case 'n':
 244                 case 'N':
 245                         newval = no;
 246                         if (!line[1] || !strcmp(&line[1], "o"))
 247                                 break;
 248                         continue;
 249                 case 'm':
 250                 case 'M':
 251                         newval = mod;
 252                         if (!line[1])
 253                                 break;
 254                         continue;
 255                 case 'y':
 256                 case 'Y':
 257                         newval = yes;
 258                         if (!line[1] || !strcmp(&line[1], "es"))
 259                                 break;
 260                         continue;
 261                 case 0:
 262                         newval = oldval;
 263                         break;
 264                 case '?':
 265                         goto help;
 266                 default:
 267                         continue;
 268                 }
 269                 if (sym_set_tristate_value(sym, newval))
 270                         return 0;
 271 help:
 272                 help = nohelp_text;
 273                 if (sym->help)
 274                         help = sym->help;
 275                 printf("\n%s\n", help);
 276         }
 277 }
 278
 279 static int conf_choice(struct menu *menu)
 280 {
 281         struct symbol *sym, *def_sym;
 282         struct menu *child;
 283         int type;
 284         bool is_new;
 285
 286         sym = menu->sym;
 287         type = sym_get_type(sym);
 288         is_new = !sym_has_value(sym);
 289         if (sym_is_changable(sym)) {
 290                 conf_sym(menu);
 291                 sym_calc_value(sym);
 292                 switch (sym_get_tristate_value(sym)) {
 293                 case no:
 294                         return 1;
 295                 case mod:
 296                         return 0;
 297                 case yes:
 298                         break;
 299                 }
 300         } else {
 301                 switch (sym_get_tristate_value(sym)) {
 302                 case no:
 303                         return 1;
 304                 case mod:
 305                         printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
 306                         return 0;
 307                 case yes:
 308                         break;
 309                 }
 310         }
 311
 312         while (1) {
 313                 int cnt, def;
 314
 315                 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
 316                 def_sym = sym_get_choice_value(sym);
 317                 cnt = def = 0;
 318                 line[0] = 0;
 319                 for (child = menu->list; child; child = child->next) {
 320                         if (!menu_is_visible(child))
 321                                 continue;
 322                         if (!child->sym) {
 323                                 printf("%*c %s\n", indent, '*', menu_get_prompt(child));
 324                                 continue;
 325                         }
 326                         cnt++;
 327                         if (child->sym == def_sym) {
 328                                 def = cnt;
 329                                 printf("%*c", indent, '>');
 330                         } else
 331                                 printf("%*c", indent, ' ');
 332                         printf(" %d. %s", cnt, menu_get_prompt(child));
 333                         if (child->sym->name)
 334                                 printf(" (%s)", child->sym->name);
 335                         if (!sym_has_value(child->sym))
 336                                 printf(" (NEW)");
 337                         printf("\n");
 338                 }
 339                 printf("%*schoice", indent - 1, "");
 340                 if (cnt == 1) {
 341                         printf("[1]: 1\n");
 342                         goto conf_childs;
 343                 }
 344                 printf("[1-%d", cnt);
 345                 if (sym->help)
 346                         printf("?");
 347                 printf("]: ");
 348                 switch (input_mode) {
 349                 case ask_new:
 350                 case ask_silent:
 351                         if (!is_new) {
 352                                 cnt = def;
 353                                 printf("%d\n", cnt);
 354                                 break;
 355                         }
 356                         check_stdin();
 357                 case ask_all:
 358                         fflush(stdout);
 359                         fgets(line, 128, stdin);
 360                         strip(line);
 361                         if (line[0] == '?') {
 362                                 printf("\n%s\n", menu->sym->help ?
 363                                         menu->sym->help : nohelp_text);
 364                                 continue;
 365                         }
 366                         if (!line[0])
 367                                 cnt = def;
 368                         else if (isdigit(line[0]))
 369                                 cnt = atoi(line);
 370                         else
 371                                 continue;
 372                         break;
 373                 case set_random:
 374                         def = (random() % cnt) + 1;
 375                 case set_default:
 376                 case set_yes:
 377                 case set_mod:
 378                 case set_no:
 379                         cnt = def;
 380                         printf("%d\n", cnt);
 381                         break;
 382                 }
 383
 384         conf_childs:
 385                 for (child = menu->list; child; child = child->next) {
 386                         if (!child->sym || !menu_is_visible(child))
 387                                 continue;
 388                         if (!--cnt)
 389                                 break;
 390                 }
 391                 if (!child)
 392                         continue;
 393                 if (line[strlen(line) - 1] == '?') {
 394                         printf("\n%s\n", child->sym->help ?
 395                                 child->sym->help : nohelp_text);
 396                         continue;
 397                 }
 398                 sym_set_choice_value(sym, child->sym);
 399                 if (child->list) {
 400                         indent += 2;
 401                         conf(child->list);
 402                         indent -= 2;
 403                 }
 404                 return 1;
 405         }
 406 }
 407
 408 static void conf(struct menu *menu)
 409 {
 410         struct symbol *sym;
 411         struct property *prop;
 412         struct menu *child;
 413
 414         if (!menu_is_visible(menu))
 415                 return;
 416
 417         sym = menu->sym;
 418         prop = menu->prompt;
 419         if (prop) {
 420                 const char *prompt;
 421
 422                 switch (prop->type) {
 423                 case P_MENU:
 424                         if (input_mode == ask_silent && rootEntry != menu) {
 425                                 check_conf(menu);
 426                                 return;
 427                         }
 428                 case P_COMMENT:
 429                         prompt = menu_get_prompt(menu);
 430                         if (prompt)
 431                                 printf("%*c\n%*c %s\n%*c\n",
 432                                         indent, '*',
 433                                         indent, '*', prompt,
 434                                         indent, '*');
 435                 default:
 436                         ;
 437                 }
 438         }
 439
 440         if (!sym)
 441                 goto conf_childs;
 442
 443         if (sym_is_choice(sym)) {
 444                 conf_choice(menu);
 445                 if (sym->curr.tri != mod)
 446                         return;
 447                 goto conf_childs;
 448         }
 449
 450         switch (sym->type) {
 451         case S_INT:
 452         case S_HEX:
 453         case S_STRING:
 454                 conf_string(menu);
 455                 break;
 456         default:
 457                 conf_sym(menu);
 458                 break;
 459         }
 460
 461 conf_childs:
 462         if (sym)
 463                 indent += 2;
 464         for (child = menu->list; child; child = child->next)
 465                 conf(child);
 466         if (sym)
 467                 indent -= 2;
 468 }
 469
 470 static void check_conf(struct menu *menu)
 471 {
 472         struct symbol *sym;
 473         struct menu *child;
 474
 475         if (!menu_is_visible(menu))
 476                 return;
 477
 478         sym = menu->sym;
 479         if (sym && !sym_has_value(sym)) {
 480                 if (sym_is_changable(sym) ||
 481                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
 482                         if (!conf_cnt++)
 483                                 printf(_("*\n* Restart config...\n*\n"));
 484                         rootEntry = menu_get_parent_menu(menu);
 485                         conf(rootEntry);
 486                 }
 487         }
 488
 489         for (child = menu->list; child; child = child->next)
 490                 check_conf(child);
 491 }
 492
 493 int main(int ac, char **av)
 494 {
 495         int i = 1;
 496         const char *name;
 497         struct stat tmpstat;
 498
 499         if (ac > i && av[i][0] == '-') {
 500                 switch (av[i++][1]) {
 501                 case 'o':
 502                         input_mode = ask_new;
 503                         break;
 504                 case 's':
 505                         input_mode = ask_silent;
 506                         valid_stdin = isatty(0) && isatty(1) && isatty(2);
 507                         break;
 508                 case 'd':
 509                         input_mode = set_default;
 510                         break;
 511                 case 'D':
 512                         input_mode = set_default;
 513                         defconfig_file = av[i++];
 514                         if (!defconfig_file) {
 515                                 printf(_("%s: No default config file specified\n"),
 516                                         av[0]);
 517                                 exit(1);
 518                         }
 519                         break;
 520                 case 'n':
 521                         input_mode = set_no;
 522                         break;
 523                 case 'm':
 524                         input_mode = set_mod;
 525                         break;
 526                 case 'y':
 527                         input_mode = set_yes;
 528                         break;
 529                 case 'r':
 530                         input_mode = set_random;
 531                         srandom(time(NULL));
 532                         break;
 533                 case 'h':
 534                 case '?':
 535                         fprintf(stderr, "See README for usage info\n");
 536                         exit(0);
 537                 }
 538         }
 539         name = av[i];
 540         if (!name) {
 541                 printf(_("%s: Kconfig file missing\n"), av[0]);
 542                 exit(1);
 543         }
 544         conf_parse(name);
 545         //zconfdump(stdout);
 546         switch (input_mode) {
 547         case set_default:
 548                 if (!defconfig_file)
 549                         defconfig_file = conf_get_default_confname();
 550                 if (conf_read(defconfig_file)) {
 551                         printf("***\n"
 552                                 "*** Can't find default configuration \"%s\"!\n"
 553                                 "***\n", defconfig_file);
 554                         exit(1);
 555                 }
 556                 break;
 557         case ask_silent:
 558                 if (stat(".config", &tmpstat)) {
 559                         printf(_("***\n"
 560                                 "*** You have not yet configured your kernel!\n"
 561                                 "***\n"
 562                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
 563                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
 564                                 "***\n"));
 565                         exit(1);
 566                 }
 567         case ask_all:
 568         case ask_new:
 569                 conf_read(NULL);
 570                 break;
 571         case set_no:
 572         case set_mod:
 573         case set_yes:
 574         case set_random:
 575                 name = getenv("KCONFIG_ALLCONFIG");
 576                 if (name && !stat(name, &tmpstat)) {
 577                         conf_read_simple(name, S_DEF_USER);
 578                         break;
 579                 }
 580                 switch (input_mode) {
 581                 case set_no:     name = "allno.config"; break;
 582                 case set_mod:    name = "allmod.config"; break;
 583                 case set_yes:    name = "allyes.config"; break;
 584                 case set_random: name = "allrandom.config"; break;
 585                 default: break;
 586                 }
 587                 if (!stat(name, &tmpstat))
 588                         conf_read_simple(name, S_DEF_USER);
 589                 else if (!stat("all.config", &tmpstat))
 590                         conf_read_simple("all.config", S_DEF_USER);
 591                 break;
 592         default:
 593                 break;
 594         }
 595
 596         if (input_mode != ask_silent) {
 597                 rootEntry = &rootmenu;
 598                 conf(&rootmenu);
 599                 if (input_mode == ask_all) {
 600                         input_mode = ask_silent;
 601                         valid_stdin = 1;
 602                 }
 603         } else if (sym_change_count) {
 604                 name = getenv("KCONFIG_NOSILENTUPDATE");
 605                 if (name && *name) {
 606                         fprintf(stderr, _("\n*** Kernel configuration requires explicit update.\n\n"));
 607                         return 1;
 608                 }
 609         } else
 610                 goto skip_check;
 611
 612         do {
 613                 conf_cnt = 0;
 614                 check_conf(&rootmenu);
 615         } while (conf_cnt);
 616         if (conf_write(NULL)) {
 617                 fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 618                 return 1;
 619         }
 620 skip_check:
 621         if (input_mode == ask_silent && conf_write_autoconf()) {
 622                 fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 623                 return 1;
 624         }
 625
 626         return 0;
 627 }