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 const char *get_help(struct menu *menu)
  41 {
  42         if (menu_has_help(menu))
  43                 return menu_get_help(menu);
  44         else
  45                 return nohelp_text;
  46 }
  47
  48 static void strip(char *str)
  49 {
  50         char *p = str;
  51         int l;
  52
  53         while ((isspace(*p)))
  54                 p++;
  55         l = strlen(p);
  56         if (p != str)
  57                 memmove(str, p, l + 1);
  58         if (!l)
  59                 return;
  60         p = str + l - 1;
  61         while ((isspace(*p)))
  62                 *p-- = 0;
  63 }
  64
  65 static void check_stdin(void)
  66 {
  67         if (!valid_stdin && input_mode == ask_silent) {
  68                 printf(_("aborted!\n\n"));
  69                 printf(_("Console input/output is redirected. "));
  70                 printf(_("Run 'make oldconfig' to update configuration.\n\n"));
  71                 exit(1);
  72         }
  73 }
  74
  75 static int conf_askvalue(struct symbol *sym, const char *def)
  76 {
  77         enum symbol_type type = sym_get_type(sym);
  78         tristate val;
  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 set_no:
  95         case set_mod:
  96         case set_yes:
  97         case set_random:
  98                 if (sym_has_value(sym)) {
  99                         printf("%s\n", def);
 100                         return 0;
 101                 }
 102                 break;
 103         case ask_new:
 104         case ask_silent:
 105                 if (sym_has_value(sym)) {
 106                         printf("%s\n", def);
 107                         return 0;
 108                 }
 109                 check_stdin();
 110         case ask_all:
 111                 fflush(stdout);
 112                 fgets(line, 128, stdin);
 113                 return 1;
 114         case set_default:
 115                 printf("%s\n", def);
 116                 return 1;
 117         default:
 118                 break;
 119         }
 120
 121         switch (type) {
 122         case S_INT:
 123         case S_HEX:
 124         case S_STRING:
 125                 printf("%s\n", def);
 126                 return 1;
 127         default:
 128                 ;
 129         }
 130         switch (input_mode) {
 131         case set_yes:
 132                 if (sym_tristate_within_range(sym, yes)) {
 133                         line[0] = 'y';
 134                         line[1] = '\n';
 135                         line[2] = 0;
 136                         break;
 137                 }
 138         case set_mod:
 139                 if (type == S_TRISTATE) {
 140                         if (sym_tristate_within_range(sym, mod)) {
 141                                 line[0] = 'm';
 142                                 line[1] = '\n';
 143                                 line[2] = 0;
 144                                 break;
 145                         }
 146                 } else {
 147                         if (sym_tristate_within_range(sym, yes)) {
 148                                 line[0] = 'y';
 149                                 line[1] = '\n';
 150                                 line[2] = 0;
 151                                 break;
 152                         }
 153                 }
 154         case set_no:
 155                 if (sym_tristate_within_range(sym, no)) {
 156                         line[0] = 'n';
 157                         line[1] = '\n';
 158                         line[2] = 0;
 159                         break;
 160                 }
 161         case set_random:
 162                 do {
 163                         val = (tristate)(random() % 3);
 164                 } while (!sym_tristate_within_range(sym, val));
 165                 switch (val) {
 166                 case no: line[0] = 'n'; break;
 167                 case mod: line[0] = 'm'; break;
 168                 case yes: line[0] = 'y'; break;
 169                 }
 170                 line[1] = '\n';
 171                 line[2] = 0;
 172                 break;
 173         default:
 174                 break;
 175         }
 176         printf("%s", line);
 177         return 1;
 178 }
 179
 180 int conf_string(struct menu *menu)
 181 {
 182         struct symbol *sym = menu->sym;
 183         const char *def;
 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                 if (!conf_askvalue(sym, def))
 192                         return 0;
 193                 switch (line[0]) {
 194                 case '\n':
 195                         break;
 196                 case '?':
 197                         /* print help */
 198                         if (line[1] == '\n') {
 199                                 printf("\n%s\n", get_help(menu));
 200                                 def = NULL;
 201                                 break;
 202                         }
 203                 default:
 204                         line[strlen(line)-1] = 0;
 205                         def = line;
 206                 }
 207                 if (def && sym_set_string_value(sym, def))
 208                         return 0;
 209         }
 210 }
 211
 212 static int conf_sym(struct menu *menu)
 213 {
 214         struct symbol *sym = menu->sym;
 215         int type;
 216         tristate oldval, newval;
 217
 218         while (1) {
 219                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
 220                 if (sym->name)
 221                         printf("(%s) ", sym->name);
 222                 type = sym_get_type(sym);
 223                 putchar('[');
 224                 oldval = sym_get_tristate_value(sym);
 225                 switch (oldval) {
 226                 case no:
 227                         putchar('N');
 228                         break;
 229                 case mod:
 230                         putchar('M');
 231                         break;
 232                 case yes:
 233                         putchar('Y');
 234                         break;
 235                 }
 236                 if (oldval != no && sym_tristate_within_range(sym, no))
 237                         printf("/n");
 238                 if (oldval != mod && sym_tristate_within_range(sym, mod))
 239                         printf("/m");
 240                 if (oldval != yes && sym_tristate_within_range(sym, yes))
 241                         printf("/y");
 242                 if (menu_has_help(menu))
 243                         printf("/?");
 244                 printf("] ");
 245                 if (!conf_askvalue(sym, sym_get_string_value(sym)))
 246                         return 0;
 247                 strip(line);
 248
 249                 switch (line[0]) {
 250                 case 'n':
 251                 case 'N':
 252                         newval = no;
 253                         if (!line[1] || !strcmp(&line[1], "o"))
 254                                 break;
 255                         continue;
 256                 case 'm':
 257                 case 'M':
 258                         newval = mod;
 259                         if (!line[1])
 260                                 break;
 261                         continue;
 262                 case 'y':
 263                 case 'Y':
 264                         newval = yes;
 265                         if (!line[1] || !strcmp(&line[1], "es"))
 266                                 break;
 267                         continue;
 268                 case 0:
 269                         newval = oldval;
 270                         break;
 271                 case '?':
 272                         goto help;
 273                 default:
 274                         continue;
 275                 }
 276                 if (sym_set_tristate_value(sym, newval))
 277                         return 0;
 278 help:
 279                 printf("\n%s\n", get_help(menu));
 280         }
 281 }
 282
 283 static int conf_choice(struct menu *menu)
 284 {
 285         struct symbol *sym, *def_sym;
 286         struct menu *child;
 287         int type;
 288         bool is_new;
 289
 290         sym = menu->sym;
 291         type = sym_get_type(sym);
 292         is_new = !sym_has_value(sym);
 293         if (sym_is_changable(sym)) {
 294                 conf_sym(menu);
 295                 sym_calc_value(sym);
 296                 switch (sym_get_tristate_value(sym)) {
 297                 case no:
 298                         return 1;
 299                 case mod:
 300                         return 0;
 301                 case yes:
 302                         break;
 303                 }
 304         } else {
 305                 switch (sym_get_tristate_value(sym)) {
 306                 case no:
 307                         return 1;
 308                 case mod:
 309                         printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
 310                         return 0;
 311                 case yes:
 312                         break;
 313                 }
 314         }
 315
 316         while (1) {
 317                 int cnt, def;
 318
 319                 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
 320                 def_sym = sym_get_choice_value(sym);
 321                 cnt = def = 0;
 322                 line[0] = 0;
 323                 for (child = menu->list; child; child = child->next) {
 324                         if (!menu_is_visible(child))
 325                                 continue;
 326                         if (!child->sym) {
 327                                 printf("%*c %s\n", indent, '*', menu_get_prompt(child));
 328                                 continue;
 329                         }
 330                         cnt++;
 331                         if (child->sym == def_sym) {
 332                                 def = cnt;
 333                                 printf("%*c", indent, '>');
 334                         } else
 335                                 printf("%*c", indent, ' ');
 336                         printf(" %d. %s", cnt, menu_get_prompt(child));
 337                         if (child->sym->name)
 338                                 printf(" (%s)", child->sym->name);
 339                         if (!sym_has_value(child->sym))
 340                                 printf(" (NEW)");
 341                         printf("\n");
 342                 }
 343                 printf("%*schoice", indent - 1, "");
 344                 if (cnt == 1) {
 345                         printf("[1]: 1\n");
 346                         goto conf_childs;
 347                 }
 348                 printf("[1-%d", cnt);
 349                 if (menu_has_help(menu))
 350                         printf("?");
 351                 printf("]: ");
 352                 switch (input_mode) {
 353                 case ask_new:
 354                 case ask_silent:
 355                         if (!is_new) {
 356                                 cnt = def;
 357                                 printf("%d\n", cnt);
 358                                 break;
 359                         }
 360                         check_stdin();
 361                 case ask_all:
 362                         fflush(stdout);
 363                         fgets(line, 128, stdin);
 364                         strip(line);
 365                         if (line[0] == '?') {
 366                                 printf("\n%s\n", get_help(menu));
 367                                 continue;
 368                         }
 369                         if (!line[0])
 370                                 cnt = def;
 371                         else if (isdigit(line[0]))
 372                                 cnt = atoi(line);
 373                         else
 374                                 continue;
 375                         break;
 376                 case set_random:
 377                         def = (random() % cnt) + 1;
 378                 case set_default:
 379                 case set_yes:
 380                 case set_mod:
 381                 case set_no:
 382                         cnt = def;
 383                         printf("%d\n", cnt);
 384                         break;
 385                 }
 386
 387         conf_childs:
 388                 for (child = menu->list; child; child = child->next) {
 389                         if (!child->sym || !menu_is_visible(child))
 390                                 continue;
 391                         if (!--cnt)
 392                                 break;
 393                 }
 394                 if (!child)
 395                         continue;
 396                 if (line[strlen(line) - 1] == '?') {
 397                         printf("\n%s\n", get_help(child));
 398                         continue;
 399                 }
 400                 sym_set_choice_value(sym, child->sym);
 401                 if (child->list) {
 402                         indent += 2;
 403                         conf(child->list);
 404                         indent -= 2;
 405                 }
 406                 return 1;
 407         }
 408 }
 409
 410 static void conf(struct menu *menu)
 411 {
 412         struct symbol *sym;
 413         struct property *prop;
 414         struct menu *child;
 415
 416         if (!menu_is_visible(menu))
 417                 return;
 418
 419         sym = menu->sym;
 420         prop = menu->prompt;
 421         if (prop) {
 422                 const char *prompt;
 423
 424                 switch (prop->type) {
 425                 case P_MENU:
 426                         if (input_mode == ask_silent && rootEntry != menu) {
 427                                 check_conf(menu);
 428                                 return;
 429                         }
 430                 case P_COMMENT:
 431                         prompt = menu_get_prompt(menu);
 432                         if (prompt)
 433                                 printf("%*c\n%*c %s\n%*c\n",
 434                                         indent, '*',
 435                                         indent, '*', prompt,
 436                                         indent, '*');
 437                 default:
 438                         ;
 439                 }
 440         }
 441
 442         if (!sym)
 443                 goto conf_childs;
 444
 445         if (sym_is_choice(sym)) {
 446                 conf_choice(menu);
 447                 if (sym->curr.tri != mod)
 448                         return;
 449                 goto conf_childs;
 450         }
 451
 452         switch (sym->type) {
 453         case S_INT:
 454         case S_HEX:
 455         case S_STRING:
 456                 conf_string(menu);
 457                 break;
 458         default:
 459                 conf_sym(menu);
 460                 break;
 461         }
 462
 463 conf_childs:
 464         if (sym)
 465                 indent += 2;
 466         for (child = menu->list; child; child = child->next)
 467                 conf(child);
 468         if (sym)
 469                 indent -= 2;
 470 }
 471
 472 static void check_conf(struct menu *menu)
 473 {
 474         struct symbol *sym;
 475         struct menu *child;
 476
 477         if (!menu_is_visible(menu))
 478                 return;
 479
 480         sym = menu->sym;
 481         if (sym && !sym_has_value(sym)) {
 482                 if (sym_is_changable(sym) ||
 483                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
 484                         if (!conf_cnt++)
 485                                 printf(_("*\n* Restart config...\n*\n"));
 486                         rootEntry = menu_get_parent_menu(menu);
 487                         conf(rootEntry);
 488                 }
 489         }
 490
 491         for (child = menu->list; child; child = child->next)
 492                 check_conf(child);
 493 }
 494
 495 int main(int ac, char **av)
 496 {
 497         int i = 1;
 498         const char *name;
 499         struct stat tmpstat;
 500
 501         if (ac > i && av[i][0] == '-') {
 502                 switch (av[i++][1]) {
 503                 case 'o':
 504                         input_mode = ask_new;
 505                         break;
 506                 case 's':
 507                         input_mode = ask_silent;
 508                         valid_stdin = isatty(0) && isatty(1) && isatty(2);
 509                         break;
 510                 case 'd':
 511                         input_mode = set_default;
 512                         break;
 513                 case 'D':
 514                         input_mode = set_default;
 515                         defconfig_file = av[i++];
 516                         if (!defconfig_file) {
 517                                 printf(_("%s: No default config file specified\n"),
 518                                         av[0]);
 519                                 exit(1);
 520                         }
 521                         break;
 522                 case 'n':
 523                         input_mode = set_no;
 524                         break;
 525                 case 'm':
 526                         input_mode = set_mod;
 527                         break;
 528                 case 'y':
 529                         input_mode = set_yes;
 530                         break;
 531                 case 'r':
 532                         input_mode = set_random;
 533                         srandom(time(NULL));
 534                         break;
 535                 case 'h':
 536                 case '?':
 537                         fprintf(stderr, "See README for usage info\n");
 538                         exit(0);
 539                 }
 540         }
 541         name = av[i];
 542         if (!name) {
 543                 printf(_("%s: Kconfig file missing\n"), av[0]);
 544                 exit(1);
 545         }
 546         conf_parse(name);
 547         //zconfdump(stdout);
 548         switch (input_mode) {
 549         case set_default:
 550                 if (!defconfig_file)
 551                         defconfig_file = conf_get_default_confname();
 552                 if (conf_read(defconfig_file)) {
 553                         printf("***\n"
 554                                 "*** Can't find default configuration \"%s\"!\n"
 555                                 "***\n", defconfig_file);
 556                         exit(1);
 557                 }
 558                 break;
 559         case ask_silent:
 560                 if (stat(".config", &tmpstat)) {
 561                         printf(_("***\n"
 562                                 "*** You have not yet configured your kernel!\n"
 563                                 "*** (missing kernel .config file)\n"
 564                                 "***\n"
 565                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
 566                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
 567                                 "***\n"));
 568                         exit(1);
 569                 }
 570         case ask_all:
 571         case ask_new:
 572                 conf_read(NULL);
 573                 break;
 574         case set_no:
 575         case set_mod:
 576         case set_yes:
 577         case set_random:
 578                 name = getenv("KCONFIG_ALLCONFIG");
 579                 if (name && !stat(name, &tmpstat)) {
 580                         conf_read_simple(name, S_DEF_USER);
 581                         break;
 582                 }
 583                 switch (input_mode) {
 584                 case set_no:     name = "allno.config"; break;
 585                 case set_mod:    name = "allmod.config"; break;
 586                 case set_yes:    name = "allyes.config"; break;
 587                 case set_random: name = "allrandom.config"; break;
 588                 default: break;
 589                 }
 590                 if (!stat(name, &tmpstat))
 591                         conf_read_simple(name, S_DEF_USER);
 592                 else if (!stat("all.config", &tmpstat))
 593                         conf_read_simple("all.config", S_DEF_USER);
 594                 break;
 595         default:
 596                 break;
 597         }
 598
 599         if (input_mode != ask_silent) {
 600                 rootEntry = &rootmenu;
 601                 conf(&rootmenu);
 602                 if (input_mode == ask_all) {
 603                         input_mode = ask_silent;
 604                         valid_stdin = 1;
 605                 }
 606         } else if (conf_get_changed()) {
 607                 name = getenv("KCONFIG_NOSILENTUPDATE");
 608                 if (name && *name) {
 609                         fprintf(stderr, _("\n*** Kernel configuration requires explicit update.\n\n"));
 610                         return 1;
 611                 }
 612         } else
 613                 goto skip_check;
 614
 615         do {
 616                 conf_cnt = 0;
 617                 check_conf(&rootmenu);
 618         } while (conf_cnt);
 619         if (conf_write(NULL)) {
 620                 fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 621                 return 1;
 622         }
 623 skip_check:
 624         if (input_mode == ask_silent && conf_write_autoconf()) {
 625                 fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 626                 return 1;
 627         }
 628
 629         return 0;
 630 }