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 int 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 0;
  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 0;
  93                 }
  94                 break;
  95         case ask_new:
  96         case ask_silent:
  97                 if (sym_has_value(sym)) {
  98                         printf("%s\n", def);
  99                         return 0;
 100                 }
 101                 check_stdin();
 102         case ask_all:
 103                 fflush(stdout);
 104                 fgets(line, 128, stdin);
 105                 return 1;
 106         case set_default:
 107                 printf("%s\n", def);
 108                 return 1;
 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 1;
 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         return 1;
 170 }
 171
 172 int conf_string(struct menu *menu)
 173 {
 174         struct symbol *sym = menu->sym;
 175         const char *def, *help;
 176
 177         while (1) {
 178                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
 179                 printf("(%s) ", sym->name);
 180                 def = sym_get_string_value(sym);
 181                 if (sym_get_string_value(sym))
 182                         printf("[%s] ", def);
 183                 if (!conf_askvalue(sym, def))
 184                         return 0;
 185                 switch (line[0]) {
 186                 case '\n':
 187                         break;
 188                 case '?':
 189                         /* print help */
 190                         if (line[1] == '\n') {
 191                                 help = nohelp_text;
 192                                 if (menu->sym->help)
 193                                         help = menu->sym->help;
 194                                 printf("\n%s\n", menu->sym->help);
 195                                 def = NULL;
 196                                 break;
 197                         }
 198                 default:
 199                         line[strlen(line)-1] = 0;
 200                         def = line;
 201                 }
 202                 if (def && sym_set_string_value(sym, def))
 203                         return 0;
 204         }
 205 }
 206
 207 static int conf_sym(struct menu *menu)
 208 {
 209         struct symbol *sym = menu->sym;
 210         int type;
 211         tristate oldval, newval;
 212         const char *help;
 213
 214         while (1) {
 215                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
 216                 if (sym->name)
 217                         printf("(%s) ", sym->name);
 218                 type = sym_get_type(sym);
 219                 putchar('[');
 220                 oldval = sym_get_tristate_value(sym);
 221                 switch (oldval) {
 222                 case no:
 223                         putchar('N');
 224                         break;
 225                 case mod:
 226                         putchar('M');
 227                         break;
 228                 case yes:
 229                         putchar('Y');
 230                         break;
 231                 }
 232                 if (oldval != no && sym_tristate_within_range(sym, no))
 233                         printf("/n");
 234                 if (oldval != mod && sym_tristate_within_range(sym, mod))
 235                         printf("/m");
 236                 if (oldval != yes && sym_tristate_within_range(sym, yes))
 237                         printf("/y");
 238                 if (sym->help)
 239                         printf("/?");
 240                 printf("] ");
 241                 if (!conf_askvalue(sym, sym_get_string_value(sym)))
 242                         return 0;
 243                 strip(line);
 244
 245                 switch (line[0]) {
 246                 case 'n':
 247                 case 'N':
 248                         newval = no;
 249                         if (!line[1] || !strcmp(&line[1], "o"))
 250                                 break;
 251                         continue;
 252                 case 'm':
 253                 case 'M':
 254                         newval = mod;
 255                         if (!line[1])
 256                                 break;
 257                         continue;
 258                 case 'y':
 259                 case 'Y':
 260                         newval = yes;
 261                         if (!line[1] || !strcmp(&line[1], "es"))
 262                                 break;
 263                         continue;
 264                 case 0:
 265                         newval = oldval;
 266                         break;
 267                 case '?':
 268                         goto help;
 269                 default:
 270                         continue;
 271                 }
 272                 if (sym_set_tristate_value(sym, newval))
 273                         return 0;
 274 help:
 275                 help = nohelp_text;
 276                 if (sym->help)
 277                         help = sym->help;
 278                 printf("\n%s\n", help);
 279         }
 280 }
 281
 282 static int conf_choice(struct menu *menu)
 283 {
 284         struct symbol *sym, *def_sym;
 285         struct menu *child;
 286         int type;
 287         bool is_new;
 288
 289         sym = menu->sym;
 290         type = sym_get_type(sym);
 291         is_new = !sym_has_value(sym);
 292         if (sym_is_changable(sym)) {
 293                 conf_sym(menu);
 294                 sym_calc_value(sym);
 295                 switch (sym_get_tristate_value(sym)) {
 296                 case no:
 297                         return 1;
 298                 case mod:
 299                         return 0;
 300                 case yes:
 301                         break;
 302                 }
 303         } else {
 304                 switch (sym_get_tristate_value(sym)) {
 305                 case no:
 306                         return 1;
 307                 case mod:
 308                         printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
 309                         return 0;
 310                 case yes:
 311                         break;
 312                 }
 313         }
 314
 315         while (1) {
 316                 int cnt, def;
 317
 318                 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
 319                 def_sym = sym_get_choice_value(sym);
 320                 cnt = def = 0;
 321                 line[0] = 0;
 322                 for (child = menu->list; child; child = child->next) {
 323                         if (!menu_is_visible(child))
 324                                 continue;
 325                         if (!child->sym) {
 326                                 printf("%*c %s\n", indent, '*', menu_get_prompt(child));
 327                                 continue;
 328                         }
 329                         cnt++;
 330                         if (child->sym == def_sym) {
 331                                 def = cnt;
 332                                 printf("%*c", indent, '>');
 333                         } else
 334                                 printf("%*c", indent, ' ');
 335                         printf(" %d. %s", cnt, menu_get_prompt(child));
 336                         if (child->sym->name)
 337                                 printf(" (%s)", child->sym->name);
 338                         if (!sym_has_value(child->sym))
 339                                 printf(" (NEW)");
 340                         printf("\n");
 341                 }
 342                 printf("%*schoice", indent - 1, "");
 343                 if (cnt == 1) {
 344                         printf("[1]: 1\n");
 345                         goto conf_childs;
 346                 }
 347                 printf("[1-%d", cnt);
 348                 if (sym->help)
 349                         printf("?");
 350                 printf("]: ");
 351                 switch (input_mode) {
 352                 case ask_new:
 353                 case ask_silent:
 354                         if (!is_new) {
 355                                 cnt = def;
 356                                 printf("%d\n", cnt);
 357                                 break;
 358                         }
 359                         check_stdin();
 360                 case ask_all:
 361                         fflush(stdout);
 362                         fgets(line, 128, stdin);
 363                         strip(line);
 364                         if (line[0] == '?') {
 365                                 printf("\n%s\n", menu->sym->help ?
 366                                         menu->sym->help : nohelp_text);
 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", child->sym->help ?
 398                                 child->sym->help : nohelp_text);
 399                         continue;
 400                 }
 401                 sym_set_choice_value(sym, child->sym);
 402                 if (child->list) {
 403                         indent += 2;
 404                         conf(child->list);
 405                         indent -= 2;
 406                 }
 407                 return 1;
 408         }
 409 }
 410
 411 static void conf(struct menu *menu)
 412 {
 413         struct symbol *sym;
 414         struct property *prop;
 415         struct menu *child;
 416
 417         if (!menu_is_visible(menu))
 418                 return;
 419
 420         sym = menu->sym;
 421         prop = menu->prompt;
 422         if (prop) {
 423                 const char *prompt;
 424
 425                 switch (prop->type) {
 426                 case P_MENU:
 427                         if (input_mode == ask_silent && rootEntry != menu) {
 428                                 check_conf(menu);
 429                                 return;
 430                         }
 431                 case P_COMMENT:
 432                         prompt = menu_get_prompt(menu);
 433                         if (prompt)
 434                                 printf("%*c\n%*c %s\n%*c\n",
 435                                         indent, '*',
 436                                         indent, '*', prompt,
 437                                         indent, '*');
 438                 default:
 439                         ;
 440                 }
 441         }
 442
 443         if (!sym)
 444                 goto conf_childs;
 445
 446         if (sym_is_choice(sym)) {
 447                 conf_choice(menu);
 448                 if (sym->curr.tri != mod)
 449                         return;
 450                 goto conf_childs;
 451         }
 452
 453         switch (sym->type) {
 454         case S_INT:
 455         case S_HEX:
 456         case S_STRING:
 457                 conf_string(menu);
 458                 break;
 459         default:
 460                 conf_sym(menu);
 461                 break;
 462         }
 463
 464 conf_childs:
 465         if (sym)
 466                 indent += 2;
 467         for (child = menu->list; child; child = child->next)
 468                 conf(child);
 469         if (sym)
 470                 indent -= 2;
 471 }
 472
 473 static void check_conf(struct menu *menu)
 474 {
 475         struct symbol *sym;
 476         struct menu *child;
 477
 478         if (!menu_is_visible(menu))
 479                 return;
 480
 481         sym = menu->sym;
 482         if (sym && !sym_has_value(sym)) {
 483                 if (sym_is_changable(sym) ||
 484                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
 485                         if (!conf_cnt++)
 486                                 printf(_("*\n* Restart config...\n*\n"));
 487                         rootEntry = menu_get_parent_menu(menu);
 488                         conf(rootEntry);
 489                 }
 490         }
 491
 492         for (child = menu->list; child; child = child->next)
 493                 check_conf(child);
 494 }
 495
 496 int main(int ac, char **av)
 497 {
 498         int i = 1;
 499         const char *name;
 500         struct stat tmpstat;
 501
 502         if (ac > i && av[i][0] == '-') {
 503                 switch (av[i++][1]) {
 504                 case 'o':
 505                         input_mode = ask_new;
 506                         break;
 507                 case 's':
 508                         input_mode = ask_silent;
 509                         valid_stdin = isatty(0) && isatty(1) && isatty(2);
 510                         break;
 511                 case 'd':
 512                         input_mode = set_default;
 513                         break;
 514                 case 'D':
 515                         input_mode = set_default;
 516                         defconfig_file = av[i++];
 517                         if (!defconfig_file) {
 518                                 printf(_("%s: No default config file specified\n"),
 519                                         av[0]);
 520                                 exit(1);
 521                         }
 522                         break;
 523                 case 'n':
 524                         input_mode = set_no;
 525                         break;
 526                 case 'm':
 527                         input_mode = set_mod;
 528                         break;
 529                 case 'y':
 530                         input_mode = set_yes;
 531                         break;
 532                 case 'r':
 533                         input_mode = set_random;
 534                         srandom(time(NULL));
 535                         break;
 536                 case 'h':
 537                 case '?':
 538                         fprintf(stderr, "See README for usage info\n");
 539                         exit(0);
 540                 }
 541         }
 542         name = av[i];
 543         if (!name) {
 544                 printf(_("%s: Kconfig file missing\n"), av[0]);
 545                 exit(1);
 546         }
 547         conf_parse(name);
 548         //zconfdump(stdout);
 549         switch (input_mode) {
 550         case set_default:
 551                 if (!defconfig_file)
 552                         defconfig_file = conf_get_default_confname();
 553                 if (conf_read(defconfig_file)) {
 554                         printf("***\n"
 555                                 "*** Can't find default configuration \"%s\"!\n"
 556                                 "***\n", defconfig_file);
 557                         exit(1);
 558                 }
 559                 break;
 560         case ask_silent:
 561                 if (stat(".config", &tmpstat)) {
 562                         printf(_("***\n"
 563                                 "*** You have not yet configured your kernel!\n"
 564                                 "*** (missing kernel .config file)\n"
 565                                 "***\n"
 566                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
 567                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
 568                                 "***\n"));
 569                         exit(1);
 570                 }
 571         case ask_all:
 572         case ask_new:
 573                 conf_read(NULL);
 574                 break;
 575         case set_no:
 576         case set_mod:
 577         case set_yes:
 578         case set_random:
 579                 name = getenv("KCONFIG_ALLCONFIG");
 580                 if (name && !stat(name, &tmpstat)) {
 581                         conf_read_simple(name, S_DEF_USER);
 582                         break;
 583                 }
 584                 switch (input_mode) {
 585                 case set_no:     name = "allno.config"; break;
 586                 case set_mod:    name = "allmod.config"; break;
 587                 case set_yes:    name = "allyes.config"; break;
 588                 case set_random: name = "allrandom.config"; break;
 589                 default: break;
 590                 }
 591                 if (!stat(name, &tmpstat))
 592                         conf_read_simple(name, S_DEF_USER);
 593                 else if (!stat("all.config", &tmpstat))
 594                         conf_read_simple("all.config", S_DEF_USER);
 595                 break;
 596         default:
 597                 break;
 598         }
 599
 600         if (input_mode != ask_silent) {
 601                 rootEntry = &rootmenu;
 602                 conf(&rootmenu);
 603                 if (input_mode == ask_all) {
 604                         input_mode = ask_silent;
 605                         valid_stdin = 1;
 606                 }
 607         } else if (conf_get_changed()) {
 608                 name = getenv("KCONFIG_NOSILENTUPDATE");
 609                 if (name && *name) {
 610                         fprintf(stderr, _("\n*** Kernel configuration requires explicit update.\n\n"));
 611                         return 1;
 612                 }
 613         } else
 614                 goto skip_check;
 615
 616         do {
 617                 conf_cnt = 0;
 618                 check_conf(&rootmenu);
 619         } while (conf_cnt);
 620         if (conf_write(NULL)) {
 621                 fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 622                 return 1;
 623         }
 624 skip_check:
 625         if (input_mode == ask_silent && conf_write_autoconf()) {
 626                 fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
 627                 return 1;
 628         }
 629
 630         return 0;
 631 }