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 void 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;
  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;
 101                 }
 102                 break;
 103         case ask_new:
 104         case ask_silent:
 105                 if (sym_has_value(sym)) {
 106                         printf("%s\n", def);
 107                         return;
 108                 }
 109                 check_stdin();
 110         case ask_all:
 111                 fflush(stdout);
 112                 fgets(line, 128, stdin);
 113                 return;
 114         case set_default:
 115                 printf("%s\n", def);
 116                 return;
 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;
 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 }
 178
 179 int conf_string(struct menu *menu)
 180 {
 181         struct symbol *sym = menu->sym;
 182         const char *def;
 183
 184         while (1) {
 185                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
 186                 printf("(%s) ", sym->name);
 187                 def = sym_get_string_value(sym);
 188                 if (sym_get_string_value(sym))
 189                         printf("[%s] ", def);
 190                 conf_askvalue(sym, def);
 191                 switch (line[0]) {
 192                 case '\n':
 193                         break;
 194                 case '?':
 195                         /* print help */
 196                         if (line[1] == '\n') {
 197                                 printf("\n%s\n", get_help(menu));
 198                                 def = NULL;
 199                                 break;
 200                         }
 201                 default:
 202                         line[strlen(line)-1] = 0;
 203                         def = line;
 204                 }
 205                 if (def && sym_set_string_value(sym, def))
 206                         return 0;
 207         }
 208 }
 209
 210 static int conf_sym(struct menu *menu)
 211 {
 212         struct symbol *sym = menu->sym;
 213         int type;
 214         tristate oldval, newval;
 215
 216         while (1) {
 217                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
 218                 if (sym->name)
 219                         printf("(%s) ", sym->name);
 220                 type = sym_get_type(sym);
 221                 putchar('[');
 222                 oldval = sym_get_tristate_value(sym);
 223                 switch (oldval) {
 224                 case no:
 225                         putchar('N');
 226                         break;
 227                 case mod:
 228                         putchar('M');
 229                         break;
 230                 case yes:
 231                         putchar('Y');
 232                         break;
 233                 }
 234                 if (oldval != no && sym_tristate_within_range(sym, no))
 235                         printf("/n");
 236                 if (oldval != mod && sym_tristate_within_range(sym, mod))
 237                         printf("/m");
 238                 if (oldval != yes && sym_tristate_within_range(sym, yes))
 239                         printf("/y");
 240                 if (menu_has_help(menu))
 241                         printf("/?");
 242                 printf("] ");
 243                 conf_askvalue(sym, sym_get_string_value(sym));
 244                 strip(line);
 245
 246                 switch (line[0]) {
 247                 case 'n':
 248                 case 'N':
 249                         newval = no;
 250                         if (!line[1] || !strcmp(&line[1], "o"))
 251                                 break;
 252                         continue;
 253                 case 'm':
 254                 case 'M':
 255                         newval = mod;
 256                         if (!line[1])
 257                                 break;
 258                         continue;
 259                 case 'y':
 260                 case 'Y':
 261                         newval = yes;
 262                         if (!line[1] || !strcmp(&line[1], "es"))
 263                                 break;
 264                         continue;
 265                 case 0:
 266                         newval = oldval;
 267                         break;
 268                 case '?':
 269                         goto help;
 270                 default:
 271                         continue;
 272                 }
 273                 if (sym_set_tristate_value(sym, newval))
 274                         return 0;
 275 help:
 276                 printf("\n%s\n", get_help(menu));
 277         }
 278 }
 279
 280 static int conf_choice(struct menu *menu)
 281 {
 282         struct symbol *sym, *def_sym;
 283         struct menu *child;
 284         int type;
 285         bool is_new;
 286
 287         sym = menu->sym;
 288         type = sym_get_type(sym);
 289         is_new = !sym_has_value(sym);
 290         if (sym_is_changable(sym)) {
 291                 conf_sym(menu);
 292                 sym_calc_value(sym);
 293                 switch (sym_get_tristate_value(sym)) {
 294                 case no:
 295                         return 1;
 296                 case mod:
 297                         return 0;
 298                 case yes:
 299                         break;
 300                 }
 301         } else {
 302                 switch (sym_get_tristate_value(sym)) {
 303                 case no:
 304                         return 1;
 305                 case mod:
 306                         printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
 307                         return 0;
 308                 case yes:
 309                         break;
 310                 }
 311         }
 312
 313         while (1) {
 314                 int cnt, def;
 315
 316                 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
 317                 def_sym = sym_get_choice_value(sym);
 318                 cnt = def = 0;
 319                 line[0] = 0;
 320                 for (child = menu->list; child; child = child->next) {
 321                         if (!menu_is_visible(child))
 322                                 continue;
 323                         if (!child->sym) {
 324                                 printf("%*c %s\n", indent, '*', menu_get_prompt(child));
 325                                 continue;
 326                         }
 327                         cnt++;
 328                         if (child->sym == def_sym) {
 329                                 def = cnt;
 330                                 printf("%*c", indent, '>');
 331                         } else
 332                                 printf("%*c", indent, ' ');
 333                         printf(" %d. %s", cnt, menu_get_prompt(child));
 334                         if (child->sym->name)
 335                                 printf(" (%s)", child->sym->name);
 336                         if (!sym_has_value(child->sym))
 337                                 printf(" (NEW)");
 338                         printf("\n");
 339                 }
 340                 printf("%*schoice", indent - 1, "");
 341                 if (cnt == 1) {
 342                         printf("[1]: 1\n");
 343                         goto conf_childs;
 344                 }
 345                 printf("[1-%d", cnt);
 346                 if (menu_has_help(menu))
 347                         printf("?");
 348                 printf("]: ");
 349                 switch (input_mode) {
 350                 case ask_new:
 351                 case ask_silent:
 352                         if (!is_new) {
 353                                 cnt = def;
 354                                 printf("%d\n", cnt);
 355                                 break;
 356                         }
 357                         check_stdin();
 358                 case ask_all:
 359                         fflush(stdout);
 360                         fgets(line, 128, stdin);
 361                         strip(line);
 362                         if (line[0] == '?') {
 363                                 printf("\n%s\n", get_help(menu));
 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", get_help(child));
 395                         continue;
 396                 }
 397                 sym_set_choice_value(sym, child->sym);
 398                 if (child->list) {
 399                         indent += 2;
 400                         conf(child->list);
 401                         indent -= 2;
 402                 }
 403                 return 1;
 404         }
 405 }
 406
 407 static void conf(struct menu *menu)
 408 {
 409         struct symbol *sym;
 410         struct property *prop;
 411         struct menu *child;
 412
 413         if (!menu_is_visible(menu))
 414                 return;
 415
 416         sym = menu->sym;
 417         prop = menu->prompt;
 418         if (prop) {
 419                 const char *prompt;
 420
 421                 switch (prop->type) {
 422                 case P_MENU:
 423                         if (input_mode == ask_silent && rootEntry != menu) {
 424                                 check_conf(menu);
 425                                 return;
 426                         }
 427                 case P_COMMENT:
 428                         prompt = menu_get_prompt(menu);
 429                         if (prompt)
 430                                 printf("%*c\n%*c %s\n%*c\n",
 431                                         indent, '*',
 432                                         indent, '*', prompt,
 433                                         indent, '*');
 434                 default:
 435                         ;
 436                 }
 437         }
 438
 439         if (!sym)
 440                 goto conf_childs;
 441
 442         if (sym_is_choice(sym)) {
 443                 conf_choice(menu);
 444                 if (sym->curr.tri != mod)
 445                         return;
 446                 goto conf_childs;
 447         }
 448
 449         switch (sym->type) {
 450         case S_INT:
 451         case S_HEX:
 452         case S_STRING:
 453                 conf_string(menu);
 454                 break;
 455         default:
 456                 conf_sym(menu);
 457                 break;
 458         }
 459
 460 conf_childs:
 461         if (sym)
 462                 indent += 2;
 463         for (child = menu->list; child; child = child->next)
 464                 conf(child);
 465         if (sym)
 466                 indent -= 2;
 467 }
 468
 469 static void check_conf(struct menu *menu)
 470 {
 471         struct symbol *sym;
 472         struct menu *child;
 473
 474         if (!menu_is_visible(menu))
 475                 return;
 476
 477         sym = menu->sym;
 478         if (sym && !sym_has_value(sym)) {
 479                 if (sym_is_changable(sym) ||
 480                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
 481                         if (!conf_cnt++)
 482                                 printf(_("*\n* Restart config...\n*\n"));
 483                         rootEntry = menu_get_parent_menu(menu);
 484                         conf(rootEntry);
 485                 }
 486         }
 487
 488         for (child = menu->list; child; child = child->next)
 489                 check_conf(child);
 490 }
 491
 492 int main(int ac, char **av)
 493 {
 494         int i = 1;
 495         const char *name;
 496         struct stat tmpstat;
 497
 498         if (ac > i && av[i][0] == '-') {
 499                 switch (av[i++][1]) {
 500                 case 'o':
 501                         input_mode = ask_new;
 502                         break;
 503                 case 's':
 504                         input_mode = ask_silent;
 505                         valid_stdin = isatty(0) && isatty(1) && isatty(2);
 506                         break;
 507                 case 'd':
 508                         input_mode = set_default;
 509                         break;
 510                 case 'D':
 511                         input_mode = set_default;
 512                         defconfig_file = av[i++];
 513                         if (!defconfig_file) {
 514                                 printf(_("%s: No default config file specified\n"),
 515                                         av[0]);
 516                                 exit(1);
 517                         }
 518                         break;
 519                 case 'n':
 520                         input_mode = set_no;
 521                         break;
 522                 case 'm':
 523                         input_mode = set_mod;
 524                         break;
 525                 case 'y':
 526                         input_mode = set_yes;
 527                         break;
 528                 case 'r':
 529                         input_mode = set_random;
 530                         srandom(time(NULL));
 531                         break;
 532                 case 'h':
 533                 case '?':
 534                         fprintf(stderr, "See README for usage info\n");
 535                         exit(0);
 536                 }
 537         }
 538         name = av[i];
 539         if (!name) {
 540                 printf(_("%s: Kconfig file missing\n"), av[0]);
 541                 exit(1);
 542         }
 543         conf_parse(name);
 544         //zconfdump(stdout);
 545         switch (input_mode) {
 546         case set_default:
 547                 if (!defconfig_file)
 548                         defconfig_file = conf_get_default_confname();
 549                 if (conf_read(defconfig_file)) {
 550                         printf("***\n"
 551                                 "*** Can't find default configuration \"%s\"!\n"
 552                                 "***\n", defconfig_file);
 553                         exit(1);
 554                 }
 555                 break;
 556         case ask_silent:
 557                 if (stat(".config", &tmpstat)) {
 558                         printf(_("***\n"
 559                                 "*** You have not yet configured your kernel!\n"
 560                                 "*** (missing kernel .config file)\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 (conf_get_changed()) {
 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 }