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