scripts/kconfig/conf.c

   1 /*
   2  * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
   3  * Released under the terms of the GNU GPL v2.0.
   4  */
   5
   6 #include <ctype.h>
   7 #include <stdlib.h>
   8 #include <string.h>
   9 #include <unistd.h>
  10 #include <time.h>
  11 #include <sys/stat.h>
  12
  13 #define LKC_DIRECT_LINK
  14 #include "lkc.h"
  15
  16 static void conf(struct menu *menu);
  17 static void check_conf(struct menu *menu);
  18
  19 enum {
  20         ask_all,
  21         ask_new,
  22         ask_silent,
  23         dont_ask,
  24         set_default,
  25         set_yes,
  26         set_mod,
  27         set_no,
  28         set_random
  29 } input_mode = ask_all;
  30 char *defconfig_file;
  31
  32 static int indent = 1;
  33 static int valid_stdin = 1;
  34 static int conf_cnt;
  35 static signed char line[128];
  36 static struct menu *rootEntry;
  37
  38 static char nohelp_text[] = "Sorry, no help available for this option yet.\n";
  39
  40 static int return_value = 0;
  41
  42 static void strip(signed char *str)
  43 {
  44         signed char *p = str;
  45         int l;
  46
  47         while ((isspace(*p)))
  48                 p++;
  49         l = strlen(p);
  50         if (p != str)
  51                 memmove(str, p, l + 1);
  52         if (!l)
  53                 return;
  54         p = str + l - 1;
  55         while ((isspace(*p)))
  56                 *p-- = 0;
  57 }
  58
  59 static void check_stdin(void)
  60 {
  61         if (!valid_stdin && input_mode == ask_silent) {
  62                 printf("aborted!\n\n");
  63                 printf("Console input/output is redirected. ");
  64                 printf("Run 'make oldconfig' to update configuration.\n\n");
  65                 exit(1);
  66         }
  67 }
  68
  69 static void conf_askvalue(struct symbol *sym, const char *def)
  70 {
  71         enum symbol_type type = sym_get_type(sym);
  72         tristate val;
  73
  74         if (!sym_has_value(sym))
  75                 printf("(NEW) ");
  76
  77         line[0] = '\n';
  78         line[1] = 0;
  79
  80         if (!sym_is_changable(sym)) {
  81                 printf("%s\n", def);
  82                 line[0] = '\n';
  83                 line[1] = 0;
  84                 return;
  85         }
  86
  87         switch (input_mode) {
  88         case ask_new:
  89         case ask_silent:
  90                 if (sym_has_value(sym)) {
  91                         printf("%s\n", def);
  92                         return;
  93                 }
  94                 check_stdin();
  95         case ask_all:
  96                 fflush(stdout);
  97                 fgets(line, 128, stdin);
  98                 return;
  99         case dont_ask:
 100                 if (!sym_has_value(sym)) {
 101                         fprintf(stderr,"CONFIG_%s\n",sym->name);
 102                         return_value++;
 103                 }
 104                 return;
 105         case set_default:
 106                 printf("%s\n", def);
 107                 return;
 108         default:
 109                 break;
 110         }
 111
 112         switch (type) {
 113         case S_INT:
 114         case S_HEX:
 115         case S_STRING:
 116                 printf("%s\n", def);
 117                 return;
 118         default:
 119                 ;
 120         }
 121         switch (input_mode) {
 122         case set_yes:
 123                 if (sym_tristate_within_range(sym, yes)) {
 124                         line[0] = 'y';
 125                         line[1] = '\n';
 126                         line[2] = 0;
 127                         break;
 128                 }
 129         case set_mod:
 130                 if (type == S_TRISTATE) {
 131                         if (sym_tristate_within_range(sym, mod)) {
 132                                 line[0] = 'm';
 133                                 line[1] = '\n';
 134                                 line[2] = 0;
 135                                 break;
 136                         }
 137                 } else {
 138                         if (sym_tristate_within_range(sym, yes)) {
 139                                 line[0] = 'y';
 140                                 line[1] = '\n';
 141                                 line[2] = 0;
 142                                 break;
 143                         }
 144                 }
 145         case set_no:
 146                 if (sym_tristate_within_range(sym, no)) {
 147                         line[0] = 'n';
 148                         line[1] = '\n';
 149                         line[2] = 0;
 150                         break;
 151                 }
 152         case set_random:
 153                 do {
 154                         val = (tristate)(random() % 3);
 155                 } while (!sym_tristate_within_range(sym, val));
 156                 switch (val) {
 157                 case no: line[0] = 'n'; break;
 158                 case mod: line[0] = 'm'; break;
 159                 case yes: line[0] = 'y'; break;
 160                 }
 161                 line[1] = '\n';
 162                 line[2] = 0;
 163                 break;
 164         default:
 165                 break;
 166         }
 167         printf("%s", line);
 168 }
 169
 170 int conf_string(struct menu *menu)
 171 {
 172         struct symbol *sym = menu->sym;
 173         const char *def, *help;
 174
 175         while (1) {
 176                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
 177                 printf("(%s) ", sym->name);
 178                 def = sym_get_string_value(sym);
 179                 if (sym_get_string_value(sym))
 180                         printf("[%s] ", def);
 181                 conf_askvalue(sym, def);
 182                 switch (line[0]) {
 183                 case '\n':
 184                         break;
 185                 case '?':
 186                         /* print help */
 187                         if (line[1] == '\n') {
 188                                 help = nohelp_text;
 189                                 if (menu->sym->help)
 190                                         help = menu->sym->help;
 191                                 printf("\n%s\n", menu->sym->help);
 192                                 def = NULL;
 193                                 break;
 194                         }
 195                 default:
 196                         line[strlen(line)-1] = 0;
 197                         def = line;
 198                 }
 199                 if (def && sym_set_string_value(sym, def))
 200                         return 0;
 201         }
 202 }
 203
 204 static int conf_sym(struct menu *menu)
 205 {
 206         struct symbol *sym = menu->sym;
 207         int type;
 208         tristate oldval, newval;
 209         const char *help;
 210
 211         while (1) {
 212                 printf("%*s%s ", indent - 1, "", menu->prompt->text);
 213                 if (sym->name)
 214                         printf("(%s) ", sym->name);
 215                 type = sym_get_type(sym);
 216                 putchar('[');
 217                 oldval = sym_get_tristate_value(sym);
 218                 switch (oldval) {
 219                 case no:
 220                         putchar('N');
 221                         break;
 222                 case mod:
 223                         putchar('M');
 224                         break;
 225                 case yes:
 226                         putchar('Y');
 227                         break;
 228                 }
 229                 if (oldval != no && sym_tristate_within_range(sym, no))
 230                         printf("/n");
 231                 if (oldval != mod && sym_tristate_within_range(sym, mod))
 232                         printf("/m");
 233                 if (oldval != yes && sym_tristate_within_range(sym, yes))
 234                         printf("/y");
 235                 if (sym->help)
 236                         printf("/?");
 237                 printf("] ");
 238                 conf_askvalue(sym, sym_get_string_value(sym));
 239                 strip(line);
 240
 241                 switch (line[0]) {
 242                 case 'n':
 243                 case 'N':
 244                         newval = no;
 245                         if (!line[1] || !strcmp(&line[1], "o"))
 246                                 break;
 247                         continue;
 248                 case 'm':
 249                 case 'M':
 250                         newval = mod;
 251                         if (!line[1])
 252                                 break;
 253                         continue;
 254                 case 'y':
 255                 case 'Y':
 256                         newval = yes;
 257                         if (!line[1] || !strcmp(&line[1], "es"))
 258                                 break;
 259                         continue;
 260                 case 0:
 261                         newval = oldval;
 262                         break;
 263                 case '?':
 264                         goto help;
 265                 default:
 266                         continue;
 267                 }
 268                 if (sym_set_tristate_value(sym, newval))
 269                         return 0;
 270 help:
 271                 help = nohelp_text;
 272                 if (sym->help)
 273                         help = sym->help;
 274                 printf("\n%s\n", help);
 275         }
 276 }
 277
 278 static int conf_choice(struct menu *menu)
 279 {
 280         struct symbol *sym, *def_sym;
 281         struct menu *child;
 282         int type;
 283         bool is_new;
 284
 285         sym = menu->sym;
 286         type = sym_get_type(sym);
 287         is_new = !sym_has_value(sym);
 288         if (sym_is_changable(sym)) {
 289                 conf_sym(menu);
 290                 sym_calc_value(sym);
 291                 switch (sym_get_tristate_value(sym)) {
 292                 case no:
 293                         return 1;
 294                 case mod:
 295                         return 0;
 296                 case yes:
 297                         break;
 298                 }
 299         } else {
 300                 switch (sym_get_tristate_value(sym)) {
 301                 case no:
 302                         return 1;
 303                 case mod:
 304                         printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
 305                         return 0;
 306                 case yes:
 307                         break;
 308                 }
 309         }
 310
 311         while (1) {
 312                 int cnt, def;
 313
 314                 printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
 315                 def_sym = sym_get_choice_value(sym);
 316                 cnt = def = 0;
 317                 line[0] = '0';
 318                 line[1] = 0;
 319                 for (child = menu->list; child; child = child->next) {
 320                         if (!menu_is_visible(child))
 321                                 continue;
 322                         if (!child->sym) {
 323                                 printf("%*c %s\n", indent, '*', menu_get_prompt(child));
 324                                 continue;
 325                         }
 326                         cnt++;
 327                         if (child->sym == def_sym) {
 328                                 def = cnt;
 329                                 printf("%*c", indent, '>');
 330                         } else
 331                                 printf("%*c", indent, ' ');
 332                         printf(" %d. %s", cnt, menu_get_prompt(child));
 333                         if (child->sym->name)
 334                                 printf(" (%s)", child->sym->name);
 335                         if (!sym_has_value(child->sym))
 336                                 printf(" (NEW)");
 337                         printf("\n");
 338                 }
 339                 printf("%*schoice", indent - 1, "");
 340                 if (cnt == 1) {
 341                         printf("[1]: 1\n");
 342                         goto conf_childs;
 343                 }
 344                 printf("[1-%d", cnt);
 345                 if (sym->help)
 346                         printf("?");
 347                 printf("]: ");
 348                 switch (input_mode) {
 349                 case dont_ask:
 350                         cnt = def;
 351                         printf("%d\n", cnt);
 352                         break;
 353                 case ask_new:
 354                 case ask_silent:
 355                         if (!is_new) {
 356                                 cnt = def;
 357                                 printf("%d\n", cnt);
 358                                 break;
 359                         }
 360                         check_stdin();
 361                 case ask_all:
 362                         fflush(stdout);
 363                         fgets(line, 128, stdin);
 364                         strip(line);
 365                         if (line[0] == '?') {
 366                                 printf("\n%s\n", menu->sym->help ?
 367                                         menu->sym->help : nohelp_text);
 368                                 continue;
 369                         }
 370                         if (!line[0])
 371                                 cnt = def;
 372                         else if (isdigit(line[0]))
 373                                 cnt = atoi(line);
 374                         else
 375                                 continue;
 376                         break;
 377                 case set_random:
 378                         def = (random() % cnt) + 1;
 379                 case set_default:
 380                 case set_yes:
 381                 case set_mod:
 382                 case set_no:
 383                         cnt = def;
 384                         printf("%d\n", cnt);
 385                         break;
 386                 }
 387
 388         conf_childs:
 389                 for (child = menu->list; child; child = child->next) {
 390                         if (!child->sym || !menu_is_visible(child))
 391                                 continue;
 392                         if (!--cnt)
 393                                 break;
 394                 }
 395                 if (!child)
 396                         continue;
 397                 if (line[strlen(line) - 1] == '?') {
 398                         printf("\n%s\n", child->sym->help ?
 399                                 child->sym->help : nohelp_text);
 400                         continue;
 401                 }
 402                 sym_set_choice_value(sym, child->sym);
 403                 if (child->list) {
 404                         indent += 2;
 405                         conf(child->list);
 406                         indent -= 2;
 407                 }
 408                 return 1;
 409         }
 410 }
 411
 412 static void conf(struct menu *menu)
 413 {
 414         struct symbol *sym;
 415         struct property *prop;
 416         struct menu *child;
 417
 418         if (!menu_is_visible(menu))
 419                 return;
 420
 421         sym = menu->sym;
 422         prop = menu->prompt;
 423         if (prop) {
 424                 const char *prompt;
 425
 426                 switch (prop->type) {
 427                 case P_MENU:
 428                         if (input_mode == ask_silent && rootEntry != menu) {
 429                                 check_conf(menu);
 430                                 return;
 431                         }
 432                 case P_COMMENT:
 433                         prompt = menu_get_prompt(menu);
 434                         if (prompt)
 435                                 printf("%*c\n%*c %s\n%*c\n",
 436                                         indent, '*',
 437                                         indent, '*', prompt,
 438                                         indent, '*');
 439                 default:
 440                         ;
 441                 }
 442         }
 443
 444         if (!sym)
 445                 goto conf_childs;
 446
 447         if (sym_is_choice(sym)) {
 448                 conf_choice(menu);
 449                 if (sym->curr.tri != mod)
 450                         return;
 451                 goto conf_childs;
 452         }
 453
 454         switch (sym->type) {
 455         case S_INT:
 456         case S_HEX:
 457         case S_STRING:
 458                 conf_string(menu);
 459                 break;
 460         default:
 461                 conf_sym(menu);
 462                 break;
 463         }
 464
 465 conf_childs:
 466         if (sym)
 467                 indent += 2;
 468         for (child = menu->list; child; child = child->next)
 469                 conf(child);
 470         if (sym)
 471                 indent -= 2;
 472 }
 473
 474 static void check_conf(struct menu *menu)
 475 {
 476         struct symbol *sym;
 477         struct menu *child;
 478
 479         if (!menu_is_visible(menu))
 480                 return;
 481
 482         sym = menu->sym;
 483         if (sym) {
 484                 if (sym_is_changable(sym) && !sym_has_value(sym)) {
 485                         if (!conf_cnt++)
 486                                 printf("*\n* Restart config...\n*\n");
 487                         rootEntry = menu_get_parent_menu(menu);
 488                         if (input_mode == dont_ask)
 489                                 fprintf(stderr,"CONFIG_%s\n",sym->name);
 490                         else
 491                                 conf(rootEntry);
 492                 }
 493                 if (sym_is_choice(sym) && sym_get_tristate_value(sym) != mod)
 494                         return;
 495         }
 496
 497         for (child = menu->list; child; child = child->next)
 498                 check_conf(child);
 499 }
 500
 501 int main(int ac, char **av)
 502 {
 503         int i = 1;
 504         const char *name;
 505         struct stat tmpstat;
 506
 507         if (ac > i && av[i][0] == '-') {
 508                 switch (av[i++][1]) {
 509                 case 'o':
 510                         input_mode = ask_new;
 511                         break;
 512                 case 'b':
 513                         input_mode = dont_ask;
 514                         break;
 515                 case 's':
 516                         input_mode = ask_silent;
 517                         valid_stdin = isatty(0) && isatty(1) && isatty(2);
 518                         break;
 519                 case 'd':
 520                         input_mode = set_default;
 521                         break;
 522                 case 'D':
 523                         input_mode = set_default;
 524                         defconfig_file = av[i++];
 525                         if (!defconfig_file) {
 526                                 printf("%s: No default config file specified\n",
 527                                         av[0]);
 528                                 exit(1);
 529                         }
 530                         break;
 531                 case 'n':
 532                         input_mode = set_no;
 533                         break;
 534                 case 'm':
 535                         input_mode = set_mod;
 536                         break;
 537                 case 'y':
 538                         input_mode = set_yes;
 539                         break;
 540                 case 'r':
 541                         input_mode = set_random;
 542                         srandom(time(NULL));
 543                         break;
 544                 case 'h':
 545                 case '?':
 546                         printf("%s [-o|-s] config\n", av[0]);
 547                         exit(0);
 548                 }
 549         }
 550         name = av[i];
 551         if (!name) {
 552                 printf("%s: Kconfig file missing\n", av[0]);
 553         }
 554         conf_parse(name);
 555         //zconfdump(stdout);
 556         switch (input_mode) {
 557         case set_default:
 558                 if (!defconfig_file)
 559                         defconfig_file = conf_get_default_confname();
 560                 if (conf_read(defconfig_file)) {
 561                         printf("***\n"
 562                                 "*** Can't find default configuration \"%s\"!\n"
 563                                 "***\n", defconfig_file);
 564                         exit(1);
 565                 }
 566                 break;
 567         case ask_silent:
 568                 if (stat(".config", &tmpstat)) {
 569                         printf("***\n"
 570                                 "*** You have not yet configured your kernel!\n"
 571                                 "***\n"
 572                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
 573                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
 574                                 "***\n");
 575                         exit(1);
 576                 }
 577         case ask_all:
 578         case ask_new:
 579         case dont_ask:
 580                 conf_read(NULL);
 581                 break;
 582         default:
 583                 break;
 584         }
 585
 586         if (input_mode != ask_silent) {
 587                 rootEntry = &rootmenu;
 588                 conf(&rootmenu);
 589                 if (input_mode == ask_all) {
 590                         input_mode = ask_silent;
 591                         valid_stdin = 1;
 592                 }
 593         }
 594         do {
 595                 conf_cnt = 0;
 596                 check_conf(&rootmenu);
 597         } while ((conf_cnt) && (input_mode != dont_ask));
 598         if (conf_write(NULL)) {
 599                 fprintf(stderr, "\n*** Error during writing of the kernel configuration.\n\n");
 600                 return 1;
 601         }
 602         return return_value;
 603 }