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