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         dont_ask,
  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 int return_value = 0;
  42
  43 static void strip(char *str)
  44 {
  45         char *p = str;
  46         int l;
  47
  48         while ((isspace(*p)))
  49                 p++;
  50         l = strlen(p);
  51         if (p != str)
  52                 memmove(str, p, l + 1);
  53         if (!l)
  54                 return;
  55         p = str + l - 1;
  56         while ((isspace(*p)))
  57                 *p-- = 0;
  58 }
  59
  60 static void check_stdin(void)
  61 {
  62         if (!valid_stdin && input_mode == ask_silent) {
  63                 printf(_("aborted!\n\n"));
  64                 printf(_("Console input/output is redirected. "));
  65                 printf(_("Run 'make oldconfig' to update configuration.\n\n"));
  66                 exit(1);
  67         }
  68 }
  69
  70 static void conf_askvalue(struct symbol *sym, const char *def)
  71 {
  72         enum symbol_type type = sym_get_type(sym);
  73         tristate val;
  74
  75         if (!sym_has_value(sym))
  76                 printf("(NEW) ");
  77
  78         line[0] = '\n';
  79         line[1] = 0;
  80
  81         if (!sym_is_changable(sym)) {
  82                 printf("%s\n", def);
  83                 line[0] = '\n';
  84                 line[1] = 0;
  85                 return;
  86         }
  87
  88         switch (input_mode) {
  89         case set_no:
  90         case set_mod:
  91         case set_yes:
  92         case set_random:
  93                 if (sym_has_value(sym)) {
  94                         printf("%s\n", def);
  95                         return;
  96                 }
  97                 break;
  98         case ask_new:
  99         case ask_silent:
 100                 if (sym_has_value(sym)) {
 101                         printf("%s\n", def);
 102                         return;
 103                 }
 104                 check_stdin();
 105         case ask_all:
 106                 fflush(stdout);
 107                 fgets(line, 128, stdin);
 108                 return;
 109         case dont_ask:
 110                 if (!sym_has_value(sym)) {
 111                         fprintf(stderr,"CONFIG_%s\n",sym->name);
 112                         return_value++;
 113                 }
 114                 return;
 115         case set_default:
 116                 printf("%s\n", def);
 117                 return;
 118         default:
 119                 break;
 120         }
 121
 122         switch (type) {
 123         case S_INT:
 124         case S_HEX:
 125         case S_STRING:
 126                 printf("%s\n", def);
 127                 return;
 128         default:
 129                 ;
 130         }
 131         switch (input_mode) {
 132         case set_yes:
 133                 if (sym_tristate_within_range(sym, yes)) {
 134                         line[0] = 'y';
 135                         line[1] = '\n';
 136                         line[2] = 0;
 137                         break;
 138                 }
 139         case set_mod:
 140                 if (type == S_TRISTATE) {
 141                         if (sym_tristate_within_range(sym, mod)) {
 142                                 line[0] = 'm';
 143                                 line[1] = '\n';
 144                                 line[2] = 0;
 145                                 break;
 146                         }
 147                 } else {
 148                         if (sym_tristate_within_range(sym, yes)) {
 149                                 line[0] = 'y';
 150                                 line[1] = '\n';
 151                                 line[2] = 0;
 152                                 break;
 153                         }
 154                 }
 155         case set_no:
 156                 if (sym_tristate_within_range(sym, no)) {
 157                         line[0] = 'n';
 158                         line[1] = '\n';
 159                         line[2] = 0;
 160                         break;
 161                 }
 162         case set_random:
 163                 do {
 164                         val = (tristate)(random() % 3);
 165                 } while (!sym_tristate_within_range(sym, val));
 166                 switch (val) {
 167                 case no: line[0] = 'n'; break;
 168                 case mod: line[0] = 'm'; break;
 169                 case yes: line[0] = 'y'; break;
 170                 }
 171                 line[1] = '\n';
 172                 line[2] = 0;
 173                 break;
 174         default:
 175                 break;
 176         }
 177         printf("%s", line);
 178 }
 179
 180 int conf_string(struct menu *menu)
 181 {
 182         struct symbol *sym = menu->sym;
 183         const char *def, *help;
 184
 185         while (1) {
 186                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
 187                 printf("(%s) ", sym->name);
 188                 def = sym_get_string_value(sym);
 189                 if (sym_get_string_value(sym))
 190                         printf("[%s] ", def);
 191                 conf_askvalue(sym, def);
 192                 switch (line[0]) {
 193                 case '\n':
 194                         break;
 195                 case '?':
 196                         /* print help */
 197                         if (line[1] == '\n') {
 198                                 help = nohelp_text;
 199                                 if (menu->sym->help)
 200                                         help = menu->sym->help;
 201                                 printf("\n%s\n", menu->sym->help);
 202                                 def = NULL;
 203                                 break;
 204                         }
 205                 default:
 206                         line[strlen(line)-1] = 0;
 207                         def = line;
 208                 }
 209                 if (def && sym_set_string_value(sym, def))
 210                         return 0;
 211         }
 212 }
 213
 214 static int conf_sym(struct menu *menu)
 215 {
 216         struct symbol *sym = menu->sym;
 217         int type;
 218         tristate oldval, newval;
 219         const char *help;
 220
 221         while (1) {
 222                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
 223                 if (sym->name)
 224                         printf("(%s) ", sym->name);
 225                 type = sym_get_type(sym);
 226                 putchar('[');
 227                 oldval = sym_get_tristate_value(sym);
 228                 switch (oldval) {
 229                 case no:
 230                         putchar('N');
 231                         break;
 232                 case mod:
 233                         putchar('M');
 234                         break;
 235                 case yes:
 236                         putchar('Y');
 237                         break;
 238                 }
 239                 if (oldval != no && sym_tristate_within_range(sym, no))
 240                         printf("/n");
 241                 if (oldval != mod && sym_tristate_within_range(sym, mod))
 242                         printf("/m");
 243                 if (oldval != yes && sym_tristate_within_range(sym, yes))
 244                         printf("/y");
 245                 if (sym->help)
 246                         printf("/?");
 247                 printf("] ");
 248                 conf_askvalue(sym, sym_get_string_value(sym));
 249                 strip(line);
 250
 251                 switch (line[0]) {
 252                 case 'n':
 253                 case 'N':
 254                         newval = no;
 255                         if (!line[1] || !strcmp(&line[1], "o"))
 256                                 break;
 257                         continue;
 258                 case 'm':
 259                 case 'M':
 260                         newval = mod;
 261                         if (!line[1])
 262                                 break;
 263                         continue;
 264                 case 'y':
 265                 case 'Y':
 266                         newval = yes;
 267                         if (!line[1] || !strcmp(&line[1], "es"))
 268                                 break;
 269                         continue;
 270                 case 0:
 271                         newval = oldval;
 272                         break;
 273                 case '?':
 274                         goto help;
 275                 default:
 276                         continue;
 277                 }
 278                 if (sym_set_tristate_value(sym, newval))
 279                         return 0;
 280 help:
 281                 help = nohelp_text;
 282                 if (sym->help)
 283                         help = sym->help;
 284                 printf("\n%s\n", help);
 285         }
 286 }
 287
 288 static int conf_choice(struct menu *menu)
 289 {
 290         struct symbol *sym, *def_sym;
 291         struct menu *child;
 292         int type;
 293         bool is_new;
 294
 295         sym = menu->sym;
 296         type = sym_get_type(sym);
 297         is_new = !sym_has_value(sym);
 298         if (sym_is_changable(sym)) {
 299                 conf_sym(menu);
 300                 sym_calc_value(sym);
 301                 switch (sym_get_tristate_value(sym)) {
 302                 case no:
 303                         return 1;
 304                 case mod:
 305                         return 0;
 306                 case yes:
 307                         break;
 308                 }
 309         } else {
 310                 switch (sym_get_tristate_value(sym)) {
 311                 case no:
 312                         return 1;
 313                 case mod:
 314                         printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
 315                         return 0;
 316                 case yes:
 317                         break;
 318                 }
 319         }
 320
 321         while (1) {
 322                 int cnt, def;
 323
 324                 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
 325                 def_sym = sym_get_choice_value(sym);
 326                 cnt = def = 0;
 327                 line[0] = 0;
 328                 for (child = menu->list; child; child = child->next) {
 329                         if (!menu_is_visible(child))
 330                                 continue;
 331                         if (!child->sym) {
 332                                 printf("%*c %s\n", indent, '*', menu_get_prompt(child));
 333                                 continue;
 334                         }
 335                         cnt++;
 336                         if (child->sym == def_sym) {
 337                                 def = cnt;
 338                                 printf("%*c", indent, '>');
 339                         } else
 340                                 printf("%*c", indent, ' ');
 341                         printf(" %d. %s", cnt, menu_get_prompt(child));
 342                         if (child->sym->name)
 343                                 printf(" (%s)", child->sym->name);
 344                         if (!sym_has_value(child->sym))
 345                                 printf(" (NEW)");
 346                         printf("\n");
 347                 }
 348                 printf("%*schoice", indent - 1, "");
 349                 if (cnt == 1) {
 350                         printf("[1]: 1\n");
 351                         goto conf_childs;
 352                 }
 353                 printf("[1-%d", cnt);
 354                 if (sym->help)
 355                         printf("?");
 356                 printf("]: ");
 357                 switch (input_mode) {
 358                 case dont_ask:
 359                         cnt = def;
 360                         printf("%d\n", cnt);
 361                         break;
 362                 case ask_new:
 363                 case ask_silent:
 364                         if (!is_new) {
 365                                 cnt = def;
 366                                 printf("%d\n", cnt);
 367                                 break;
 368                         }
 369                         check_stdin();
 370                 case ask_all:
 371                         fflush(stdout);
 372                         fgets(line, 128, stdin);
 373                         strip(line);
 374                         if (line[0] == '?') {
 375                                 printf("\n%s\n", menu->sym->help ?
 376                                         menu->sym->help : nohelp_text);
 377                                 continue;
 378                         }
 379                         if (!line[0])
 380                                 cnt = def;
 381                         else if (isdigit(line[0]))
 382                                 cnt = atoi(line);
 383                         else
 384                                 continue;
 385                         break;
 386                 case set_random:
 387                         def = (random() % cnt) + 1;
 388                 case set_default:
 389                 case set_yes:
 390                 case set_mod:
 391                 case set_no:
 392                         cnt = def;
 393                         printf("%d\n", cnt);
 394                         break;
 395                 }
 396
 397         conf_childs:
 398                 for (child = menu->list; child; child = child->next) {
 399                         if (!child->sym || !menu_is_visible(child))
 400                                 continue;
 401                         if (!--cnt)
 402                                 break;
 403                 }
 404                 if (!child)
 405                         continue;
 406                 if (line[strlen(line) - 1] == '?') {
 407                         printf("\n%s\n", child->sym->help ?
 408                                 child->sym->help : nohelp_text);
 409                         continue;
 410                 }
 411                 sym_set_choice_value(sym, child->sym);
 412                 if (child->list) {
 413                         indent += 2;
 414                         conf(child->list);
 415                         indent -= 2;
 416                 }
 417                 return 1;
 418         }
 419 }
 420
 421 static void conf(struct menu *menu)
 422 {
 423         struct symbol *sym;
 424         struct property *prop;
 425         struct menu *child;
 426
 427         if (!menu_is_visible(menu))
 428                 return;
 429
 430         sym = menu->sym;
 431         prop = menu->prompt;
 432         if (prop) {
 433                 const char *prompt;
 434
 435                 switch (prop->type) {
 436                 case P_MENU:
 437                         if (input_mode == ask_silent && rootEntry != menu) {
 438                                 check_conf(menu);
 439                                 return;
 440                         }
 441                 case P_COMMENT:
 442                         prompt = menu_get_prompt(menu);
 443                         if (prompt)
 444                                 printf("%*c\n%*c %s\n%*c\n",
 445                                         indent, '*',
 446                                         indent, '*', prompt,
 447                                         indent, '*');
 448                 default:
 449                         ;
 450                 }
 451         }
 452
 453         if (!sym)
 454                 goto conf_childs;
 455
 456         if (sym_is_choice(sym)) {
 457                 conf_choice(menu);
 458                 if (sym->curr.tri != mod)
 459                         return;
 460                 goto conf_childs;
 461         }
 462
 463         switch (sym->type) {
 464         case S_INT:
 465         case S_HEX:
 466         case S_STRING:
 467                 conf_string(menu);
 468                 break;
 469         default:
 470                 conf_sym(menu);
 471                 break;
 472         }
 473
 474 conf_childs:
 475         if (sym)
 476                 indent += 2;
 477         for (child = menu->list; child; child = child->next)
 478                 conf(child);
 479         if (sym)
 480                 indent -= 2;
 481 }
 482
 483 static void check_conf(struct menu *menu)
 484 {
 485         struct symbol *sym;
 486         struct menu *child;
 487
 488         if (!menu_is_visible(menu))
 489                 return;
 490
 491         sym = menu->sym;
 492         if (sym && !sym_has_value(sym)) {
 493                 if (sym_is_changable(sym) ||
 494                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
 495                         if (!conf_cnt++)
 496                                 printf(_("*\n* Restart config...\n*\n"));
 497                         rootEntry = menu_get_parent_menu(menu);
 498                         if (input_mode == dont_ask)
 499                                 fprintf(stderr,"CONFIG_%s\n",sym->name);
 500                         else
 501                                 conf(rootEntry);
 502                 }
 503         }
 504
 505         for (child = menu->list; child; child = child->next)
 506                 check_conf(child);
 507 }
 508
 509 int main(int ac, char **av)
 510 {
 511         int i = 1;
 512         const char *name;
 513         struct stat tmpstat;
 514
 515         if (ac > i && av[i][0] == '-') {
 516                 switch (av[i++][1]) {
 517                 case 'o':
 518                         input_mode = ask_new;
 519                         break;
 520                 case 'b':
 521                         input_mode = dont_ask;
 522                         break;
 523                 case 's':
 524                         input_mode = ask_silent;
 525                         valid_stdin = isatty(0) && isatty(1) && isatty(2);
 526                         break;
 527                 case 'd':
 528                         input_mode = set_default;
 529                         break;
 530                 case 'D':
 531                         input_mode = set_default;
 532                         defconfig_file = av[i++];
 533                         if (!defconfig_file) {
 534                                 printf(_("%s: No default config file specified\n"),
 535                                         av[0]);
 536                                 exit(1);
 537                         }
 538                         break;
 539                 case 'n':
 540                         input_mode = set_no;
 541                         break;
 542                 case 'm':
 543                         input_mode = set_mod;
 544                         break;
 545                 case 'y':
 546                         input_mode = set_yes;
 547                         break;
 548                 case 'r':
 549                         input_mode = set_random;
 550                         srandom(time(NULL));
 551                         break;
 552                 case 'h':
 553                 case '?':
 554                         fprintf(stderr, "See README for usage info\n");
 555                         exit(0);
 556                 }
 557         }
 558         name = av[i];
 559         if (!name) {
 560                 printf(_("%s: Kconfig file missing\n"), av[0]);
 561                 exit(1);
 562         }
 563         conf_parse(name);
 564         //zconfdump(stdout);
 565         switch (input_mode) {
 566         case set_default:
 567                 if (!defconfig_file)
 568                         defconfig_file = conf_get_default_confname();
 569                 if (conf_read(defconfig_file)) {
 570                         printf("***\n"
 571                                 "*** Can't find default configuration \"%s\"!\n"
 572                                 "***\n", defconfig_file);
 573                         exit(1);
 574                 }
 575                 break;
 576         case ask_silent:
 577                 if (stat(".config", &tmpstat)) {
 578                         printf(_("***\n"
 579                                 "*** You have not yet configured your kernel!\n"
 580                                 "***\n"
 581                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
 582                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
 583                                 "***\n"));
 584                         exit(1);
 585                 }
 586         case ask_all:
 587         case ask_new:
 588         case dont_ask:
 589                 conf_read(NULL);
 590                 break;
 591         case set_no:
 592         case set_mod:
 593         case set_yes:
 594         case set_random:
 595                 name = getenv("KCONFIG_ALLCONFIG");
 596                 if (name && !stat(name, &tmpstat)) {
 597                         conf_read_simple(name, S_DEF_USER);
 598                         break;
 599                 }
 600                 switch (input_mode) {
 601                 case set_no:     name = "allno.config"; break;
 602                 case set_mod:    name = "allmod.config"; break;
 603                 case set_yes:    name = "allyes.config"; break;
 604                 case set_random: name = "allrandom.config"; break;
 605                 default: break;
 606                 }
 607                 if (!stat(name, &tmpstat))
 608                         conf_read_simple(name, S_DEF_USER);
 609                 else if (!stat("all.config", &tmpstat))
 610                         conf_read_simple("all.config", S_DEF_USER);
 611                 break;
 612         default:
 613                 break;
 614         }
 615
 616         if (input_mode != ask_silent) {
 617                 rootEntry = &rootmenu;
 618                 conf(&rootmenu);
 619                 if (input_mode == ask_all) {
 620                         input_mode = ask_silent;
 621                         valid_stdin = 1;
 622                 }
 623         } else if (sym_change_count) {
 624                 name = getenv("KCONFIG_NOSILENTUPDATE");
 625                 if (name && *name) {
 626                         fprintf(stderr, _("\n*** Kernel configuration requires explicit update.\n\n"));
 627                         return 1;
 628                 }
 629         } else
 630                 goto skip_check;
 631
 632         do {
 633                 conf_cnt = 0;
 634                 check_conf(&rootmenu);
 635         } while ((conf_cnt) && (input_mode != dont_ask));
 636         if (conf_write(NULL)) {
 637                 fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 638                 return 1;
 639         }
 640 skip_check:
 641         if (input_mode == ask_silent && conf_write_autoconf()) {
 642                 fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 643                 return 1;
 644         }
 645
 646         return return_value;
 647 }