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 <locale.h>
   7 #include <ctype.h>
   8 #include <limits.h>
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <time.h>
  13 #include <unistd.h>
  14 #include <getopt.h>
  15 #include <sys/stat.h>
  16 #include <sys/time.h>
  17 #include <errno.h>
  18
  19 #include "lkc.h"
  20
  21 static void conf(struct menu *menu);
  22 static void check_conf(struct menu *menu);
  23
  24 enum input_mode {
  25         oldaskconfig,
  26         silentoldconfig,
  27         oldconfig,
  28         allnoconfig,
  29         allyesconfig,
  30         allmodconfig,
  31         alldefconfig,
  32         randconfig,
  33         defconfig,
  34         savedefconfig,
  35         listnewconfig,
  36         olddefconfig,
  37 };
  38 static enum input_mode input_mode = oldaskconfig;
  39
  40 static int indent = 1;
  41 static int tty_stdio;
  42 static int valid_stdin = 1;
  43 static int sync_kconfig;
  44 static int conf_cnt;
  45 static char line[PATH_MAX];
  46 static struct menu *rootEntry;
  47
  48 static void print_help(struct menu *menu)
  49 {
  50         struct gstr help = str_new();
  51
  52         menu_get_ext_help(menu, &help);
  53
  54         printf("\n%s\n", str_get(&help));
  55         str_free(&help);
  56 }
  57
  58 static void strip(char *str)
  59 {
  60         char *p = str;
  61         int l;
  62
  63         while ((isspace(*p)))
  64                 p++;
  65         l = strlen(p);
  66         if (p != str)
  67                 memmove(str, p, l + 1);
  68         if (!l)
  69                 return;
  70         p = str + l - 1;
  71         while ((isspace(*p)))
  72                 *p-- = 0;
  73 }
  74
  75 static void check_stdin(void)
  76 {
  77         if (!valid_stdin) {
  78                 printf(_("aborted!\n\n"));
  79                 printf(_("Console input/output is redirected. "));
  80                 printf(_("Run 'make oldconfig' to update configuration.\n\n"));
  81                 exit(1);
  82         }
  83 }
  84
  85 /* Helper function to facilitate fgets() by Jean Sacren. */
  86 static void xfgets(char *str, int size, FILE *in)
  87 {
  88         if (!fgets(str, size, in))
  89                 fprintf(stderr, "\nError in reading or end of file.\n");
  90 }
  91
  92 static int conf_askvalue(struct symbol *sym, const char *def)
  93 {
  94         enum symbol_type type = sym_get_type(sym);
  95
  96         if (!sym_has_value(sym))
  97                 printf(_("(NEW) "));
  98
  99         line[0] = '\n';
 100         line[1] = 0;
 101
 102         if (!sym_is_changable(sym)) {
 103                 printf("%s\n", def);
 104                 line[0] = '\n';
 105                 line[1] = 0;
 106                 return 0;
 107         }
 108
 109         switch (input_mode) {
 110         case oldconfig:
 111         case silentoldconfig:
 112                 if (sym_has_value(sym)) {
 113                         printf("%s\n", def);
 114                         return 0;
 115                 }
 116                 check_stdin();
 117                 /* fall through */
 118         case oldaskconfig:
 119                 fflush(stdout);
 120                 xfgets(line, sizeof(line), stdin);
 121                 if (!tty_stdio)
 122                         printf("\n");
 123                 return 1;
 124         default:
 125                 break;
 126         }
 127
 128         switch (type) {
 129         case S_INT:
 130         case S_HEX:
 131         case S_STRING:
 132                 printf("%s\n", def);
 133                 return 1;
 134         default:
 135                 ;
 136         }
 137         printf("%s", line);
 138         return 1;
 139 }
 140
 141 static int conf_string(struct menu *menu)
 142 {
 143         struct symbol *sym = menu->sym;
 144         const char *def;
 145
 146         while (1) {
 147                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
 148                 printf("(%s) ", sym->name);
 149                 def = sym_get_string_value(sym);
 150                 if (sym_get_string_value(sym))
 151                         printf("[%s] ", def);
 152                 if (!conf_askvalue(sym, def))
 153                         return 0;
 154                 switch (line[0]) {
 155                 case '\n':
 156                         break;
 157                 case '?':
 158                         /* print help */
 159                         if (line[1] == '\n') {
 160                                 print_help(menu);
 161                                 def = NULL;
 162                                 break;
 163                         }
 164                         /* fall through */
 165                 default:
 166                         line[strlen(line)-1] = 0;
 167                         def = line;
 168                 }
 169                 if (def && sym_set_string_value(sym, def))
 170                         return 0;
 171         }
 172 }
 173
 174 static int conf_sym(struct menu *menu)
 175 {
 176         struct symbol *sym = menu->sym;
 177         tristate oldval, newval;
 178
 179         while (1) {
 180                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
 181                 if (sym->name)
 182                         printf("(%s) ", sym->name);
 183                 putchar('[');
 184                 oldval = sym_get_tristate_value(sym);
 185                 switch (oldval) {
 186                 case no:
 187                         putchar('N');
 188                         break;
 189                 case mod:
 190                         putchar('M');
 191                         break;
 192                 case yes:
 193                         putchar('Y');
 194                         break;
 195                 }
 196                 if (oldval != no && sym_tristate_within_range(sym, no))
 197                         printf("/n");
 198                 if (oldval != mod && sym_tristate_within_range(sym, mod))
 199                         printf("/m");
 200                 if (oldval != yes && sym_tristate_within_range(sym, yes))
 201                         printf("/y");
 202                 if (menu_has_help(menu))
 203                         printf("/?");
 204                 printf("] ");
 205                 if (!conf_askvalue(sym, sym_get_string_value(sym)))
 206                         return 0;
 207                 strip(line);
 208
 209                 switch (line[0]) {
 210                 case 'n':
 211                 case 'N':
 212                         newval = no;
 213                         if (!line[1] || !strcmp(&line[1], "o"))
 214                                 break;
 215                         continue;
 216                 case 'm':
 217                 case 'M':
 218                         newval = mod;
 219                         if (!line[1])
 220                                 break;
 221                         continue;
 222                 case 'y':
 223                 case 'Y':
 224                         newval = yes;
 225                         if (!line[1] || !strcmp(&line[1], "es"))
 226                                 break;
 227                         continue;
 228                 case 0:
 229                         newval = oldval;
 230                         break;
 231                 case '?':
 232                         goto help;
 233                 default:
 234                         continue;
 235                 }
 236                 if (sym_set_tristate_value(sym, newval))
 237                         return 0;
 238 help:
 239                 print_help(menu);
 240         }
 241 }
 242
 243 static int conf_choice(struct menu *menu)
 244 {
 245         struct symbol *sym, *def_sym;
 246         struct menu *child;
 247         bool is_new;
 248
 249         sym = menu->sym;
 250         is_new = !sym_has_value(sym);
 251         if (sym_is_changable(sym)) {
 252                 conf_sym(menu);
 253                 sym_calc_value(sym);
 254                 switch (sym_get_tristate_value(sym)) {
 255                 case no:
 256                         return 1;
 257                 case mod:
 258                         return 0;
 259                 case yes:
 260                         break;
 261                 }
 262         } else {
 263                 switch (sym_get_tristate_value(sym)) {
 264                 case no:
 265                         return 1;
 266                 case mod:
 267                         printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
 268                         return 0;
 269                 case yes:
 270                         break;
 271                 }
 272         }
 273
 274         while (1) {
 275                 int cnt, def;
 276
 277                 printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
 278                 def_sym = sym_get_choice_value(sym);
 279                 cnt = def = 0;
 280                 line[0] = 0;
 281                 for (child = menu->list; child; child = child->next) {
 282                         if (!menu_is_visible(child))
 283                                 continue;
 284                         if (!child->sym) {
 285                                 printf("%*c %s\n", indent, '*', _(menu_get_prompt(child)));
 286                                 continue;
 287                         }
 288                         cnt++;
 289                         if (child->sym == def_sym) {
 290                                 def = cnt;
 291                                 printf("%*c", indent, '>');
 292                         } else
 293                                 printf("%*c", indent, ' ');
 294                         printf(" %d. %s", cnt, _(menu_get_prompt(child)));
 295                         if (child->sym->name)
 296                                 printf(" (%s)", child->sym->name);
 297                         if (!sym_has_value(child->sym))
 298                                 printf(_(" (NEW)"));
 299                         printf("\n");
 300                 }
 301                 printf(_("%*schoice"), indent - 1, "");
 302                 if (cnt == 1) {
 303                         printf("[1]: 1\n");
 304                         goto conf_childs;
 305                 }
 306                 printf("[1-%d", cnt);
 307                 if (menu_has_help(menu))
 308                         printf("?");
 309                 printf("]: ");
 310                 switch (input_mode) {
 311                 case oldconfig:
 312                 case silentoldconfig:
 313                         if (!is_new) {
 314                                 cnt = def;
 315                                 printf("%d\n", cnt);
 316                                 break;
 317                         }
 318                         check_stdin();
 319                         /* fall through */
 320                 case oldaskconfig:
 321                         fflush(stdout);
 322                         xfgets(line, sizeof(line), stdin);
 323                         strip(line);
 324                         if (line[0] == '?') {
 325                                 print_help(menu);
 326                                 continue;
 327                         }
 328                         if (!line[0])
 329                                 cnt = def;
 330                         else if (isdigit(line[0]))
 331                                 cnt = atoi(line);
 332                         else
 333                                 continue;
 334                         break;
 335                 default:
 336                         break;
 337                 }
 338
 339         conf_childs:
 340                 for (child = menu->list; child; child = child->next) {
 341                         if (!child->sym || !menu_is_visible(child))
 342                                 continue;
 343                         if (!--cnt)
 344                                 break;
 345                 }
 346                 if (!child)
 347                         continue;
 348                 if (line[0] && line[strlen(line) - 1] == '?') {
 349                         print_help(child);
 350                         continue;
 351                 }
 352                 sym_set_choice_value(sym, child->sym);
 353                 for (child = child->list; child; child = child->next) {
 354                         indent += 2;
 355                         conf(child);
 356                         indent -= 2;
 357                 }
 358                 return 1;
 359         }
 360 }
 361
 362 static void conf(struct menu *menu)
 363 {
 364         struct symbol *sym;
 365         struct property *prop;
 366         struct menu *child;
 367
 368         if (!menu_is_visible(menu))
 369                 return;
 370
 371         sym = menu->sym;
 372         prop = menu->prompt;
 373         if (prop) {
 374                 const char *prompt;
 375
 376                 switch (prop->type) {
 377                 case P_MENU:
 378                         if ((input_mode == silentoldconfig ||
 379                              input_mode == listnewconfig ||
 380                              input_mode == olddefconfig) &&
 381                             rootEntry != menu) {
 382                                 check_conf(menu);
 383                                 return;
 384                         }
 385                         /* fall through */
 386                 case P_COMMENT:
 387                         prompt = menu_get_prompt(menu);
 388                         if (prompt)
 389                                 printf("%*c\n%*c %s\n%*c\n",
 390                                         indent, '*',
 391                                         indent, '*', _(prompt),
 392                                         indent, '*');
 393                 default:
 394                         ;
 395                 }
 396         }
 397
 398         if (!sym)
 399                 goto conf_childs;
 400
 401         if (sym_is_choice(sym)) {
 402                 conf_choice(menu);
 403                 if (sym->curr.tri != mod)
 404                         return;
 405                 goto conf_childs;
 406         }
 407
 408         switch (sym->type) {
 409         case S_INT:
 410         case S_HEX:
 411         case S_STRING:
 412                 conf_string(menu);
 413                 break;
 414         default:
 415                 conf_sym(menu);
 416                 break;
 417         }
 418
 419 conf_childs:
 420         if (sym)
 421                 indent += 2;
 422         for (child = menu->list; child; child = child->next)
 423                 conf(child);
 424         if (sym)
 425                 indent -= 2;
 426 }
 427
 428 static void check_conf(struct menu *menu)
 429 {
 430         struct symbol *sym;
 431         struct menu *child;
 432
 433         if (!menu_is_visible(menu))
 434                 return;
 435
 436         sym = menu->sym;
 437         if (sym && !sym_has_value(sym)) {
 438                 if (sym_is_changable(sym) ||
 439                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
 440                         if (input_mode == listnewconfig) {
 441                                 if (sym->name && !sym_is_choice_value(sym)) {
 442                                         printf("%s%s\n", CONFIG_, sym->name);
 443                                 }
 444                         } else if (input_mode != olddefconfig) {
 445                                 if (!conf_cnt++)
 446                                         printf(_("*\n* Restart config...\n*\n"));
 447                                 rootEntry = menu_get_parent_menu(menu);
 448                                 conf(rootEntry);
 449                         }
 450                 }
 451         }
 452
 453         for (child = menu->list; child; child = child->next)
 454                 check_conf(child);
 455 }
 456
 457 static struct option long_opts[] = {
 458         {"oldaskconfig",    no_argument,       NULL, oldaskconfig},
 459         {"oldconfig",       no_argument,       NULL, oldconfig},
 460         {"silentoldconfig", no_argument,       NULL, silentoldconfig},
 461         {"defconfig",       optional_argument, NULL, defconfig},
 462         {"savedefconfig",   required_argument, NULL, savedefconfig},
 463         {"allnoconfig",     no_argument,       NULL, allnoconfig},
 464         {"allyesconfig",    no_argument,       NULL, allyesconfig},
 465         {"allmodconfig",    no_argument,       NULL, allmodconfig},
 466         {"alldefconfig",    no_argument,       NULL, alldefconfig},
 467         {"randconfig",      no_argument,       NULL, randconfig},
 468         {"listnewconfig",   no_argument,       NULL, listnewconfig},
 469         {"olddefconfig",    no_argument,       NULL, olddefconfig},
 470         /*
 471          * oldnoconfig is an alias of olddefconfig, because people already
 472          * are dependent on its behavior(sets new symbols to their default
 473          * value but not 'n') with the counter-intuitive name.
 474          */
 475         {"oldnoconfig",     no_argument,       NULL, olddefconfig},
 476         {NULL, 0, NULL, 0}
 477 };
 478
 479 static void conf_usage(const char *progname)
 480 {
 481
 482         printf("Usage: %s [-s] [option] <kconfig-file>\n", progname);
 483         printf("[option] is _one_ of the following:\n");
 484         printf("  --listnewconfig         List new options\n");
 485         printf("  --oldaskconfig          Start a new configuration using a line-oriented program\n");
 486         printf("  --oldconfig             Update a configuration using a provided .config as base\n");
 487         printf("  --silentoldconfig       Similar to oldconfig but generates configuration in\n"
 488                "                          include/{generated/,config/} (oldconfig used to be more verbose)\n");
 489         printf("  --olddefconfig          Same as oldconfig but sets new symbols to their default value\n");
 490         printf("  --oldnoconfig           An alias of olddefconfig\n");
 491         printf("  --defconfig <file>      New config with default defined in <file>\n");
 492         printf("  --savedefconfig <file>  Save the minimal current configuration to <file>\n");
 493         printf("  --allnoconfig           New config where all options are answered with no\n");
 494         printf("  --allyesconfig          New config where all options are answered with yes\n");
 495         printf("  --allmodconfig          New config where all options are answered with mod\n");
 496         printf("  --alldefconfig          New config with all symbols set to default\n");
 497         printf("  --randconfig            New config with random answer to all options\n");
 498 }
 499
 500 int main(int ac, char **av)
 501 {
 502         const char *progname = av[0];
 503         int opt;
 504         const char *name, *defconfig_file = NULL /* gcc uninit */;
 505         struct stat tmpstat;
 506
 507         setlocale(LC_ALL, "");
 508         bindtextdomain(PACKAGE, LOCALEDIR);
 509         textdomain(PACKAGE);
 510
 511         tty_stdio = isatty(0) && isatty(1) && isatty(2);
 512
 513         while ((opt = getopt_long(ac, av, "s", long_opts, NULL)) != -1) {
 514                 if (opt == 's') {
 515                         conf_set_message_callback(NULL);
 516                         continue;
 517                 }
 518                 input_mode = (enum input_mode)opt;
 519                 switch (opt) {
 520                 case silentoldconfig:
 521                         sync_kconfig = 1;
 522                         break;
 523                 case defconfig:
 524                 case savedefconfig:
 525                         defconfig_file = optarg;
 526                         break;
 527                 case randconfig:
 528                 {
 529                         struct timeval now;
 530                         unsigned int seed;
 531                         char *seed_env;
 532
 533                         /*
 534                          * Use microseconds derived seed,
 535                          * compensate for systems where it may be zero
 536                          */
 537                         gettimeofday(&now, NULL);
 538                         seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
 539
 540                         seed_env = getenv("KCONFIG_SEED");
 541                         if( seed_env && *seed_env ) {
 542                                 char *endp;
 543                                 int tmp = (int)strtol(seed_env, &endp, 0);
 544                                 if (*endp == '\0') {
 545                                         seed = tmp;
 546                                 }
 547                         }
 548                         fprintf( stderr, "KCONFIG_SEED=0x%X\n", seed );
 549                         srand(seed);
 550                         break;
 551                 }
 552                 case oldaskconfig:
 553                 case oldconfig:
 554                 case allnoconfig:
 555                 case allyesconfig:
 556                 case allmodconfig:
 557                 case alldefconfig:
 558                 case listnewconfig:
 559                 case olddefconfig:
 560                         break;
 561                 case '?':
 562                         conf_usage(progname);
 563                         exit(1);
 564                         break;
 565                 }
 566         }
 567         if (ac == optind) {
 568                 printf(_("%s: Kconfig file missing\n"), av[0]);
 569                 conf_usage(progname);
 570                 exit(1);
 571         }
 572         name = av[optind];
 573         conf_parse(name);
 574         //zconfdump(stdout);
 575         if (sync_kconfig) {
 576                 name = conf_get_configname();
 577                 if (stat(name, &tmpstat)) {
 578                         fprintf(stderr, _("***\n"
 579                                 "*** Configuration file \"%s\" not found!\n"
 580                                 "***\n"
 581                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
 582                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
 583                                 "***\n"), name);
 584                         exit(1);
 585                 }
 586         }
 587
 588         switch (input_mode) {
 589         case defconfig:
 590                 if (!defconfig_file)
 591                         defconfig_file = conf_get_default_confname();
 592                 if (conf_read(defconfig_file)) {
 593                         printf(_("***\n"
 594                                 "*** Can't find default configuration \"%s\"!\n"
 595                                 "***\n"), defconfig_file);
 596                         exit(1);
 597                 }
 598                 break;
 599         case savedefconfig:
 600         case silentoldconfig:
 601         case oldaskconfig:
 602         case oldconfig:
 603         case listnewconfig:
 604         case olddefconfig:
 605                 conf_read(NULL);
 606                 break;
 607         case allnoconfig:
 608         case allyesconfig:
 609         case allmodconfig:
 610         case alldefconfig:
 611         case randconfig:
 612                 name = getenv("KCONFIG_ALLCONFIG");
 613                 if (!name)
 614                         break;
 615                 if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) {
 616                         if (conf_read_simple(name, S_DEF_USER)) {
 617                                 fprintf(stderr,
 618                                         _("*** Can't read seed configuration \"%s\"!\n"),
 619                                         name);
 620                                 exit(1);
 621                         }
 622                         break;
 623                 }
 624                 switch (input_mode) {
 625                 case allnoconfig:       name = "allno.config"; break;
 626                 case allyesconfig:      name = "allyes.config"; break;
 627                 case allmodconfig:      name = "allmod.config"; break;
 628                 case alldefconfig:      name = "alldef.config"; break;
 629                 case randconfig:        name = "allrandom.config"; break;
 630                 default: break;
 631                 }
 632                 if (conf_read_simple(name, S_DEF_USER) &&
 633                     conf_read_simple("all.config", S_DEF_USER)) {
 634                         fprintf(stderr,
 635                                 _("*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n"),
 636                                 name);
 637                         exit(1);
 638                 }
 639                 break;
 640         default:
 641                 break;
 642         }
 643
 644         if (sync_kconfig) {
 645                 if (conf_get_changed()) {
 646                         name = getenv("KCONFIG_NOSILENTUPDATE");
 647                         if (name && *name) {
 648                                 fprintf(stderr,
 649                                         _("\n*** The configuration requires explicit update.\n\n"));
 650                                 return 1;
 651                         }
 652                 }
 653                 valid_stdin = tty_stdio;
 654         }
 655
 656         switch (input_mode) {
 657         case allnoconfig:
 658                 conf_set_all_new_symbols(def_no);
 659                 break;
 660         case allyesconfig:
 661                 conf_set_all_new_symbols(def_yes);
 662                 break;
 663         case allmodconfig:
 664                 conf_set_all_new_symbols(def_mod);
 665                 break;
 666         case alldefconfig:
 667                 conf_set_all_new_symbols(def_default);
 668                 break;
 669         case randconfig:
 670                 /* Really nothing to do in this loop */
 671                 while (conf_set_all_new_symbols(def_random)) ;
 672                 break;
 673         case defconfig:
 674                 conf_set_all_new_symbols(def_default);
 675                 break;
 676         case savedefconfig:
 677                 break;
 678         case oldaskconfig:
 679                 rootEntry = &rootmenu;
 680                 conf(&rootmenu);
 681                 input_mode = silentoldconfig;
 682                 /* fall through */
 683         case oldconfig:
 684         case listnewconfig:
 685         case olddefconfig:
 686         case silentoldconfig:
 687                 /* Update until a loop caused no more changes */
 688                 do {
 689                         conf_cnt = 0;
 690                         check_conf(&rootmenu);
 691                 } while (conf_cnt &&
 692                          (input_mode != listnewconfig &&
 693                           input_mode != olddefconfig));
 694                 break;
 695         }
 696
 697         if (sync_kconfig) {
 698                 /* silentoldconfig is used during the build so we shall update autoconf.
 699                  * All other commands are only used to generate a config.
 700                  */
 701                 if (conf_get_changed() && conf_write(NULL)) {
 702                         fprintf(stderr, _("\n*** Error during writing of the configuration.\n\n"));
 703                         exit(1);
 704                 }
 705                 if (conf_write_autoconf()) {
 706                         fprintf(stderr, _("\n*** Error during update of the configuration.\n\n"));
 707                         return 1;
 708                 }
 709         } else if (input_mode == savedefconfig) {
 710                 if (conf_write_defconfig(defconfig_file)) {
 711                         fprintf(stderr, _("n*** Error while saving defconfig to: %s\n\n"),
 712                                 defconfig_file);
 713                         return 1;
 714                 }
 715         } else if (input_mode != listnewconfig) {
 716                 if (conf_write(NULL)) {
 717                         fprintf(stderr, _("\n*** Error during writing of the configuration.\n\n"));
 718                         exit(1);
 719                 }
 720         }
 721         return 0;
 722 }