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                 printf("/?] ");
 203                 if (!conf_askvalue(sym, sym_get_string_value(sym)))
 204                         return 0;
 205                 strip(line);
 206
 207                 switch (line[0]) {
 208                 case 'n':
 209                 case 'N':
 210                         newval = no;
 211                         if (!line[1] || !strcmp(&line[1], "o"))
 212                                 break;
 213                         continue;
 214                 case 'm':
 215                 case 'M':
 216                         newval = mod;
 217                         if (!line[1])
 218                                 break;
 219                         continue;
 220                 case 'y':
 221                 case 'Y':
 222                         newval = yes;
 223                         if (!line[1] || !strcmp(&line[1], "es"))
 224                                 break;
 225                         continue;
 226                 case 0:
 227                         newval = oldval;
 228                         break;
 229                 case '?':
 230                         goto help;
 231                 default:
 232                         continue;
 233                 }
 234                 if (sym_set_tristate_value(sym, newval))
 235                         return 0;
 236 help:
 237                 print_help(menu);
 238         }
 239 }
 240
 241 static int conf_choice(struct menu *menu)
 242 {
 243         struct symbol *sym, *def_sym;
 244         struct menu *child;
 245         bool is_new;
 246
 247         sym = menu->sym;
 248         is_new = !sym_has_value(sym);
 249         if (sym_is_changable(sym)) {
 250                 conf_sym(menu);
 251                 sym_calc_value(sym);
 252                 switch (sym_get_tristate_value(sym)) {
 253                 case no:
 254                         return 1;
 255                 case mod:
 256                         return 0;
 257                 case yes:
 258                         break;
 259                 }
 260         } else {
 261                 switch (sym_get_tristate_value(sym)) {
 262                 case no:
 263                         return 1;
 264                 case mod:
 265                         printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
 266                         return 0;
 267                 case yes:
 268                         break;
 269                 }
 270         }
 271
 272         while (1) {
 273                 int cnt, def;
 274
 275                 printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
 276                 def_sym = sym_get_choice_value(sym);
 277                 cnt = def = 0;
 278                 line[0] = 0;
 279                 for (child = menu->list; child; child = child->next) {
 280                         if (!menu_is_visible(child))
 281                                 continue;
 282                         if (!child->sym) {
 283                                 printf("%*c %s\n", indent, '*', _(menu_get_prompt(child)));
 284                                 continue;
 285                         }
 286                         cnt++;
 287                         if (child->sym == def_sym) {
 288                                 def = cnt;
 289                                 printf("%*c", indent, '>');
 290                         } else
 291                                 printf("%*c", indent, ' ');
 292                         printf(" %d. %s", cnt, _(menu_get_prompt(child)));
 293                         if (child->sym->name)
 294                                 printf(" (%s)", child->sym->name);
 295                         if (!sym_has_value(child->sym))
 296                                 printf(_(" (NEW)"));
 297                         printf("\n");
 298                 }
 299                 printf(_("%*schoice"), indent - 1, "");
 300                 if (cnt == 1) {
 301                         printf("[1]: 1\n");
 302                         goto conf_childs;
 303                 }
 304                 printf("[1-%d?]: ", cnt);
 305                 switch (input_mode) {
 306                 case oldconfig:
 307                 case silentoldconfig:
 308                         if (!is_new) {
 309                                 cnt = def;
 310                                 printf("%d\n", cnt);
 311                                 break;
 312                         }
 313                         check_stdin();
 314                         /* fall through */
 315                 case oldaskconfig:
 316                         fflush(stdout);
 317                         xfgets(line, sizeof(line), stdin);
 318                         strip(line);
 319                         if (line[0] == '?') {
 320                                 print_help(menu);
 321                                 continue;
 322                         }
 323                         if (!line[0])
 324                                 cnt = def;
 325                         else if (isdigit(line[0]))
 326                                 cnt = atoi(line);
 327                         else
 328                                 continue;
 329                         break;
 330                 default:
 331                         break;
 332                 }
 333
 334         conf_childs:
 335                 for (child = menu->list; child; child = child->next) {
 336                         if (!child->sym || !menu_is_visible(child))
 337                                 continue;
 338                         if (!--cnt)
 339                                 break;
 340                 }
 341                 if (!child)
 342                         continue;
 343                 if (line[0] && line[strlen(line) - 1] == '?') {
 344                         print_help(child);
 345                         continue;
 346                 }
 347                 sym_set_choice_value(sym, child->sym);
 348                 for (child = child->list; child; child = child->next) {
 349                         indent += 2;
 350                         conf(child);
 351                         indent -= 2;
 352                 }
 353                 return 1;
 354         }
 355 }
 356
 357 static void conf(struct menu *menu)
 358 {
 359         struct symbol *sym;
 360         struct property *prop;
 361         struct menu *child;
 362
 363         if (!menu_is_visible(menu))
 364                 return;
 365
 366         sym = menu->sym;
 367         prop = menu->prompt;
 368         if (prop) {
 369                 const char *prompt;
 370
 371                 switch (prop->type) {
 372                 case P_MENU:
 373                         if ((input_mode == silentoldconfig ||
 374                              input_mode == listnewconfig ||
 375                              input_mode == olddefconfig) &&
 376                             rootEntry != menu) {
 377                                 check_conf(menu);
 378                                 return;
 379                         }
 380                         /* fall through */
 381                 case P_COMMENT:
 382                         prompt = menu_get_prompt(menu);
 383                         if (prompt)
 384                                 printf("%*c\n%*c %s\n%*c\n",
 385                                         indent, '*',
 386                                         indent, '*', _(prompt),
 387                                         indent, '*');
 388                 default:
 389                         ;
 390                 }
 391         }
 392
 393         if (!sym)
 394                 goto conf_childs;
 395
 396         if (sym_is_choice(sym)) {
 397                 conf_choice(menu);
 398                 if (sym->curr.tri != mod)
 399                         return;
 400                 goto conf_childs;
 401         }
 402
 403         switch (sym->type) {
 404         case S_INT:
 405         case S_HEX:
 406         case S_STRING:
 407                 conf_string(menu);
 408                 break;
 409         default:
 410                 conf_sym(menu);
 411                 break;
 412         }
 413
 414 conf_childs:
 415         if (sym)
 416                 indent += 2;
 417         for (child = menu->list; child; child = child->next)
 418                 conf(child);
 419         if (sym)
 420                 indent -= 2;
 421 }
 422
 423 static void check_conf(struct menu *menu)
 424 {
 425         struct symbol *sym;
 426         struct menu *child;
 427
 428         if (!menu_is_visible(menu))
 429                 return;
 430
 431         sym = menu->sym;
 432         if (sym && !sym_has_value(sym)) {
 433                 if (sym_is_changable(sym) ||
 434                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
 435                         if (input_mode == listnewconfig) {
 436                                 if (sym->name && !sym_is_choice_value(sym)) {
 437                                         printf("%s%s\n", CONFIG_, sym->name);
 438                                 }
 439                         } else if (input_mode != olddefconfig) {
 440                                 if (!conf_cnt++)
 441                                         printf(_("*\n* Restart config...\n*\n"));
 442                                 rootEntry = menu_get_parent_menu(menu);
 443                                 conf(rootEntry);
 444                         }
 445                 }
 446         }
 447
 448         for (child = menu->list; child; child = child->next)
 449                 check_conf(child);
 450 }
 451
 452 static struct option long_opts[] = {
 453         {"oldaskconfig",    no_argument,       NULL, oldaskconfig},
 454         {"oldconfig",       no_argument,       NULL, oldconfig},
 455         {"silentoldconfig", no_argument,       NULL, silentoldconfig},
 456         {"defconfig",       optional_argument, NULL, defconfig},
 457         {"savedefconfig",   required_argument, NULL, savedefconfig},
 458         {"allnoconfig",     no_argument,       NULL, allnoconfig},
 459         {"allyesconfig",    no_argument,       NULL, allyesconfig},
 460         {"allmodconfig",    no_argument,       NULL, allmodconfig},
 461         {"alldefconfig",    no_argument,       NULL, alldefconfig},
 462         {"randconfig",      no_argument,       NULL, randconfig},
 463         {"listnewconfig",   no_argument,       NULL, listnewconfig},
 464         {"olddefconfig",    no_argument,       NULL, olddefconfig},
 465         /*
 466          * oldnoconfig is an alias of olddefconfig, because people already
 467          * are dependent on its behavior(sets new symbols to their default
 468          * value but not 'n') with the counter-intuitive name.
 469          */
 470         {"oldnoconfig",     no_argument,       NULL, olddefconfig},
 471         {NULL, 0, NULL, 0}
 472 };
 473
 474 static void conf_usage(const char *progname)
 475 {
 476
 477         printf("Usage: %s [-s] [option] <kconfig-file>\n", progname);
 478         printf("[option] is _one_ of the following:\n");
 479         printf("  --listnewconfig         List new options\n");
 480         printf("  --oldaskconfig          Start a new configuration using a line-oriented program\n");
 481         printf("  --oldconfig             Update a configuration using a provided .config as base\n");
 482         printf("  --silentoldconfig       Similar to oldconfig but generates configuration in\n"
 483                "                          include/{generated/,config/} (oldconfig used to be more verbose)\n");
 484         printf("  --olddefconfig          Same as oldconfig but sets new symbols to their default value\n");
 485         printf("  --oldnoconfig           An alias of olddefconfig\n");
 486         printf("  --defconfig <file>      New config with default defined in <file>\n");
 487         printf("  --savedefconfig <file>  Save the minimal current configuration to <file>\n");
 488         printf("  --allnoconfig           New config where all options are answered with no\n");
 489         printf("  --allyesconfig          New config where all options are answered with yes\n");
 490         printf("  --allmodconfig          New config where all options are answered with mod\n");
 491         printf("  --alldefconfig          New config with all symbols set to default\n");
 492         printf("  --randconfig            New config with random answer to all options\n");
 493 }
 494
 495 int main(int ac, char **av)
 496 {
 497         const char *progname = av[0];
 498         int opt;
 499         const char *name, *defconfig_file = NULL /* gcc uninit */;
 500         struct stat tmpstat;
 501
 502         setlocale(LC_ALL, "");
 503         bindtextdomain(PACKAGE, LOCALEDIR);
 504         textdomain(PACKAGE);
 505
 506         tty_stdio = isatty(0) && isatty(1) && isatty(2);
 507
 508         while ((opt = getopt_long(ac, av, "s", long_opts, NULL)) != -1) {
 509                 if (opt == 's') {
 510                         conf_set_message_callback(NULL);
 511                         continue;
 512                 }
 513                 input_mode = (enum input_mode)opt;
 514                 switch (opt) {
 515                 case silentoldconfig:
 516                         sync_kconfig = 1;
 517                         break;
 518                 case defconfig:
 519                 case savedefconfig:
 520                         defconfig_file = optarg;
 521                         break;
 522                 case randconfig:
 523                 {
 524                         struct timeval now;
 525                         unsigned int seed;
 526                         char *seed_env;
 527
 528                         /*
 529                          * Use microseconds derived seed,
 530                          * compensate for systems where it may be zero
 531                          */
 532                         gettimeofday(&now, NULL);
 533                         seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
 534
 535                         seed_env = getenv("KCONFIG_SEED");
 536                         if( seed_env && *seed_env ) {
 537                                 char *endp;
 538                                 int tmp = (int)strtol(seed_env, &endp, 0);
 539                                 if (*endp == '\0') {
 540                                         seed = tmp;
 541                                 }
 542                         }
 543                         fprintf( stderr, "KCONFIG_SEED=0x%X\n", seed );
 544                         srand(seed);
 545                         break;
 546                 }
 547                 case oldaskconfig:
 548                 case oldconfig:
 549                 case allnoconfig:
 550                 case allyesconfig:
 551                 case allmodconfig:
 552                 case alldefconfig:
 553                 case listnewconfig:
 554                 case olddefconfig:
 555                         break;
 556                 case '?':
 557                         conf_usage(progname);
 558                         exit(1);
 559                         break;
 560                 }
 561         }
 562         if (ac == optind) {
 563                 printf(_("%s: Kconfig file missing\n"), av[0]);
 564                 conf_usage(progname);
 565                 exit(1);
 566         }
 567         name = av[optind];
 568         conf_parse(name);
 569         //zconfdump(stdout);
 570         if (sync_kconfig) {
 571                 name = conf_get_configname();
 572                 if (stat(name, &tmpstat)) {
 573                         fprintf(stderr, _("***\n"
 574                                 "*** Configuration file \"%s\" not found!\n"
 575                                 "***\n"
 576                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
 577                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
 578                                 "***\n"), name);
 579                         exit(1);
 580                 }
 581         }
 582
 583         switch (input_mode) {
 584         case defconfig:
 585                 if (!defconfig_file)
 586                         defconfig_file = conf_get_default_confname();
 587                 if (conf_read(defconfig_file)) {
 588                         printf(_("***\n"
 589                                 "*** Can't find default configuration \"%s\"!\n"
 590                                 "***\n"), defconfig_file);
 591                         exit(1);
 592                 }
 593                 break;
 594         case savedefconfig:
 595         case silentoldconfig:
 596         case oldaskconfig:
 597         case oldconfig:
 598         case listnewconfig:
 599         case olddefconfig:
 600                 conf_read(NULL);
 601                 break;
 602         case allnoconfig:
 603         case allyesconfig:
 604         case allmodconfig:
 605         case alldefconfig:
 606         case randconfig:
 607                 name = getenv("KCONFIG_ALLCONFIG");
 608                 if (!name)
 609                         break;
 610                 if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) {
 611                         if (conf_read_simple(name, S_DEF_USER)) {
 612                                 fprintf(stderr,
 613                                         _("*** Can't read seed configuration \"%s\"!\n"),
 614                                         name);
 615                                 exit(1);
 616                         }
 617                         break;
 618                 }
 619                 switch (input_mode) {
 620                 case allnoconfig:       name = "allno.config"; break;
 621                 case allyesconfig:      name = "allyes.config"; break;
 622                 case allmodconfig:      name = "allmod.config"; break;
 623                 case alldefconfig:      name = "alldef.config"; break;
 624                 case randconfig:        name = "allrandom.config"; break;
 625                 default: break;
 626                 }
 627                 if (conf_read_simple(name, S_DEF_USER) &&
 628                     conf_read_simple("all.config", S_DEF_USER)) {
 629                         fprintf(stderr,
 630                                 _("*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n"),
 631                                 name);
 632                         exit(1);
 633                 }
 634                 break;
 635         default:
 636                 break;
 637         }
 638
 639         if (sync_kconfig) {
 640                 if (conf_get_changed()) {
 641                         name = getenv("KCONFIG_NOSILENTUPDATE");
 642                         if (name && *name) {
 643                                 fprintf(stderr,
 644                                         _("\n*** The configuration requires explicit update.\n\n"));
 645                                 return 1;
 646                         }
 647                 }
 648                 valid_stdin = tty_stdio;
 649         }
 650
 651         switch (input_mode) {
 652         case allnoconfig:
 653                 conf_set_all_new_symbols(def_no);
 654                 break;
 655         case allyesconfig:
 656                 conf_set_all_new_symbols(def_yes);
 657                 break;
 658         case allmodconfig:
 659                 conf_set_all_new_symbols(def_mod);
 660                 break;
 661         case alldefconfig:
 662                 conf_set_all_new_symbols(def_default);
 663                 break;
 664         case randconfig:
 665                 /* Really nothing to do in this loop */
 666                 while (conf_set_all_new_symbols(def_random)) ;
 667                 break;
 668         case defconfig:
 669                 conf_set_all_new_symbols(def_default);
 670                 break;
 671         case savedefconfig:
 672                 break;
 673         case oldaskconfig:
 674                 rootEntry = &rootmenu;
 675                 conf(&rootmenu);
 676                 input_mode = silentoldconfig;
 677                 /* fall through */
 678         case oldconfig:
 679         case listnewconfig:
 680         case olddefconfig:
 681         case silentoldconfig:
 682                 /* Update until a loop caused no more changes */
 683                 do {
 684                         conf_cnt = 0;
 685                         check_conf(&rootmenu);
 686                 } while (conf_cnt &&
 687                          (input_mode != listnewconfig &&
 688                           input_mode != olddefconfig));
 689                 break;
 690         }
 691
 692         if (sync_kconfig) {
 693                 /* silentoldconfig is used during the build so we shall update autoconf.
 694                  * All other commands are only used to generate a config.
 695                  */
 696                 if (conf_get_changed() && conf_write(NULL)) {
 697                         fprintf(stderr, _("\n*** Error during writing of the configuration.\n\n"));
 698                         exit(1);
 699                 }
 700                 if (conf_write_autoconf()) {
 701                         fprintf(stderr, _("\n*** Error during update of the configuration.\n\n"));
 702                         return 1;
 703                 }
 704         } else if (input_mode == savedefconfig) {
 705                 if (conf_write_defconfig(defconfig_file)) {
 706                         fprintf(stderr, _("n*** Error while saving defconfig to: %s\n\n"),
 707                                 defconfig_file);
 708                         return 1;
 709                 }
 710         } else if (input_mode != listnewconfig) {
 711                 if (conf_write(NULL)) {
 712                         fprintf(stderr, _("\n*** Error during writing of the configuration.\n\n"));
 713                         exit(1);
 714                 }
 715         }
 716         return 0;
 717 }