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TOMOYO Linux Cross Reference
Linux/scripts/kconfig/conf.c

Version: ~ [ linux-5.15-rc6 ] ~ [ linux-5.14.14 ] ~ [ linux-5.13.19 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.75 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.155 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.213 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.252 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.287 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.289 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
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  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 static void xfgets(char *str, int size, FILE *in);
 24 
 25 enum input_mode {
 26         oldaskconfig,
 27         silentoldconfig,
 28         oldconfig,
 29         allnoconfig,
 30         allyesconfig,
 31         allmodconfig,
 32         alldefconfig,
 33         randconfig,
 34         defconfig,
 35         savedefconfig,
 36         listnewconfig,
 37         olddefconfig,
 38 } 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 static int conf_askvalue(struct symbol *sym, const char *def)
 86 {
 87         enum symbol_type type = sym_get_type(sym);
 88 
 89         if (!sym_has_value(sym))
 90                 printf(_("(NEW) "));
 91 
 92         line[0] = '\n';
 93         line[1] = 0;
 94 
 95         if (!sym_is_changable(sym)) {
 96                 printf("%s\n", def);
 97                 line[0] = '\n';
 98                 line[1] = 0;
 99                 return 0;
100         }
101 
102         switch (input_mode) {
103         case oldconfig:
104         case silentoldconfig:
105                 if (sym_has_value(sym)) {
106                         printf("%s\n", def);
107                         return 0;
108                 }
109                 check_stdin();
110                 /* fall through */
111         case oldaskconfig:
112                 fflush(stdout);
113                 xfgets(line, sizeof(line), stdin);
114                 if (!tty_stdio)
115                         printf("\n");
116                 return 1;
117         default:
118                 break;
119         }
120 
121         switch (type) {
122         case S_INT:
123         case S_HEX:
124         case S_STRING:
125                 printf("%s\n", def);
126                 return 1;
127         default:
128                 ;
129         }
130         printf("%s", line);
131         return 1;
132 }
133 
134 static int conf_string(struct menu *menu)
135 {
136         struct symbol *sym = menu->sym;
137         const char *def;
138 
139         while (1) {
140                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
141                 printf("(%s) ", sym->name);
142                 def = sym_get_string_value(sym);
143                 if (sym_get_string_value(sym))
144                         printf("[%s] ", def);
145                 if (!conf_askvalue(sym, def))
146                         return 0;
147                 switch (line[0]) {
148                 case '\n':
149                         break;
150                 case '?':
151                         /* print help */
152                         if (line[1] == '\n') {
153                                 print_help(menu);
154                                 def = NULL;
155                                 break;
156                         }
157                         /* fall through */
158                 default:
159                         line[strlen(line)-1] = 0;
160                         def = line;
161                 }
162                 if (def && sym_set_string_value(sym, def))
163                         return 0;
164         }
165 }
166 
167 static int conf_sym(struct menu *menu)
168 {
169         struct symbol *sym = menu->sym;
170         tristate oldval, newval;
171 
172         while (1) {
173                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
174                 if (sym->name)
175                         printf("(%s) ", sym->name);
176                 putchar('[');
177                 oldval = sym_get_tristate_value(sym);
178                 switch (oldval) {
179                 case no:
180                         putchar('N');
181                         break;
182                 case mod:
183                         putchar('M');
184                         break;
185                 case yes:
186                         putchar('Y');
187                         break;
188                 }
189                 if (oldval != no && sym_tristate_within_range(sym, no))
190                         printf("/n");
191                 if (oldval != mod && sym_tristate_within_range(sym, mod))
192                         printf("/m");
193                 if (oldval != yes && sym_tristate_within_range(sym, yes))
194                         printf("/y");
195                 if (menu_has_help(menu))
196                         printf("/?");
197                 printf("] ");
198                 if (!conf_askvalue(sym, sym_get_string_value(sym)))
199                         return 0;
200                 strip(line);
201 
202                 switch (line[0]) {
203                 case 'n':
204                 case 'N':
205                         newval = no;
206                         if (!line[1] || !strcmp(&line[1], "o"))
207                                 break;
208                         continue;
209                 case 'm':
210                 case 'M':
211                         newval = mod;
212                         if (!line[1])
213                                 break;
214                         continue;
215                 case 'y':
216                 case 'Y':
217                         newval = yes;
218                         if (!line[1] || !strcmp(&line[1], "es"))
219                                 break;
220                         continue;
221                 case 0:
222                         newval = oldval;
223                         break;
224                 case '?':
225                         goto help;
226                 default:
227                         continue;
228                 }
229                 if (sym_set_tristate_value(sym, newval))
230                         return 0;
231 help:
232                 print_help(menu);
233         }
234 }
235 
236 static int conf_choice(struct menu *menu)
237 {
238         struct symbol *sym, *def_sym;
239         struct menu *child;
240         bool is_new;
241 
242         sym = menu->sym;
243         is_new = !sym_has_value(sym);
244         if (sym_is_changable(sym)) {
245                 conf_sym(menu);
246                 sym_calc_value(sym);
247                 switch (sym_get_tristate_value(sym)) {
248                 case no:
249                         return 1;
250                 case mod:
251                         return 0;
252                 case yes:
253                         break;
254                 }
255         } else {
256                 switch (sym_get_tristate_value(sym)) {
257                 case no:
258                         return 1;
259                 case mod:
260                         printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
261                         return 0;
262                 case yes:
263                         break;
264                 }
265         }
266 
267         while (1) {
268                 int cnt, def;
269 
270                 printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
271                 def_sym = sym_get_choice_value(sym);
272                 cnt = def = 0;
273                 line[0] = 0;
274                 for (child = menu->list; child; child = child->next) {
275                         if (!menu_is_visible(child))
276                                 continue;
277                         if (!child->sym) {
278                                 printf("%*c %s\n", indent, '*', _(menu_get_prompt(child)));
279                                 continue;
280                         }
281                         cnt++;
282                         if (child->sym == def_sym) {
283                                 def = cnt;
284                                 printf("%*c", indent, '>');
285                         } else
286                                 printf("%*c", indent, ' ');
287                         printf(" %d. %s", cnt, _(menu_get_prompt(child)));
288                         if (child->sym->name)
289                                 printf(" (%s)", child->sym->name);
290                         if (!sym_has_value(child->sym))
291                                 printf(_(" (NEW)"));
292                         printf("\n");
293                 }
294                 printf(_("%*schoice"), indent - 1, "");
295                 if (cnt == 1) {
296                         printf("[1]: 1\n");
297                         goto conf_childs;
298                 }
299                 printf("[1-%d", cnt);
300                 if (menu_has_help(menu))
301                         printf("?");
302                 printf("]: ");
303                 switch (input_mode) {
304                 case oldconfig:
305                 case silentoldconfig:
306                         if (!is_new) {
307                                 cnt = def;
308                                 printf("%d\n", cnt);
309                                 break;
310                         }
311                         check_stdin();
312                         /* fall through */
313                 case oldaskconfig:
314                         fflush(stdout);
315                         xfgets(line, sizeof(line), stdin);
316                         strip(line);
317                         if (line[0] == '?') {
318                                 print_help(menu);
319                                 continue;
320                         }
321                         if (!line[0])
322                                 cnt = def;
323                         else if (isdigit(line[0]))
324                                 cnt = atoi(line);
325                         else
326                                 continue;
327                         break;
328                 default:
329                         break;
330                 }
331 
332         conf_childs:
333                 for (child = menu->list; child; child = child->next) {
334                         if (!child->sym || !menu_is_visible(child))
335                                 continue;
336                         if (!--cnt)
337                                 break;
338                 }
339                 if (!child)
340                         continue;
341                 if (line[0] && line[strlen(line) - 1] == '?') {
342                         print_help(child);
343                         continue;
344                 }
345                 sym_set_choice_value(sym, child->sym);
346                 for (child = child->list; child; child = child->next) {
347                         indent += 2;
348                         conf(child);
349                         indent -= 2;
350                 }
351                 return 1;
352         }
353 }
354 
355 static void conf(struct menu *menu)
356 {
357         struct symbol *sym;
358         struct property *prop;
359         struct menu *child;
360 
361         if (!menu_is_visible(menu))
362                 return;
363 
364         sym = menu->sym;
365         prop = menu->prompt;
366         if (prop) {
367                 const char *prompt;
368 
369                 switch (prop->type) {
370                 case P_MENU:
371                         if ((input_mode == silentoldconfig ||
372                              input_mode == listnewconfig ||
373                              input_mode == olddefconfig) &&
374                             rootEntry != menu) {
375                                 check_conf(menu);
376                                 return;
377                         }
378                         /* fall through */
379                 case P_COMMENT:
380                         prompt = menu_get_prompt(menu);
381                         if (prompt)
382                                 printf("%*c\n%*c %s\n%*c\n",
383                                         indent, '*',
384                                         indent, '*', _(prompt),
385                                         indent, '*');
386                 default:
387                         ;
388                 }
389         }
390 
391         if (!sym)
392                 goto conf_childs;
393 
394         if (sym_is_choice(sym)) {
395                 conf_choice(menu);
396                 if (sym->curr.tri != mod)
397                         return;
398                 goto conf_childs;
399         }
400 
401         switch (sym->type) {
402         case S_INT:
403         case S_HEX:
404         case S_STRING:
405                 conf_string(menu);
406                 break;
407         default:
408                 conf_sym(menu);
409                 break;
410         }
411 
412 conf_childs:
413         if (sym)
414                 indent += 2;
415         for (child = menu->list; child; child = child->next)
416                 conf(child);
417         if (sym)
418                 indent -= 2;
419 }
420 
421 static void check_conf(struct menu *menu)
422 {
423         struct symbol *sym;
424         struct menu *child;
425 
426         if (!menu_is_visible(menu))
427                 return;
428 
429         sym = menu->sym;
430         if (sym && !sym_has_value(sym)) {
431                 if (sym_is_changable(sym) ||
432                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
433                         if (input_mode == listnewconfig) {
434                                 if (sym->name && !sym_is_choice_value(sym)) {
435                                         printf("%s%s\n", CONFIG_, sym->name);
436                                 }
437                         } else if (input_mode != olddefconfig) {
438                                 if (!conf_cnt++)
439                                         printf(_("*\n* Restart config...\n*\n"));
440                                 rootEntry = menu_get_parent_menu(menu);
441                                 conf(rootEntry);
442                         }
443                 }
444         }
445 
446         for (child = menu->list; child; child = child->next)
447                 check_conf(child);
448 }
449 
450 static struct option long_opts[] = {
451         {"oldaskconfig",    no_argument,       NULL, oldaskconfig},
452         {"oldconfig",       no_argument,       NULL, oldconfig},
453         {"silentoldconfig", no_argument,       NULL, silentoldconfig},
454         {"defconfig",       optional_argument, NULL, defconfig},
455         {"savedefconfig",   required_argument, NULL, savedefconfig},
456         {"allnoconfig",     no_argument,       NULL, allnoconfig},
457         {"allyesconfig",    no_argument,       NULL, allyesconfig},
458         {"allmodconfig",    no_argument,       NULL, allmodconfig},
459         {"alldefconfig",    no_argument,       NULL, alldefconfig},
460         {"randconfig",      no_argument,       NULL, randconfig},
461         {"listnewconfig",   no_argument,       NULL, listnewconfig},
462         {"olddefconfig",    no_argument,       NULL, olddefconfig},
463         /*
464          * oldnoconfig is an alias of olddefconfig, because people already
465          * are dependent on its behavior(sets new symbols to their default
466          * value but not 'n') with the counter-intuitive name.
467          */
468         {"oldnoconfig",     no_argument,       NULL, olddefconfig},
469         {NULL, 0, NULL, 0}
470 };
471 
472 static void conf_usage(const char *progname)
473 {
474 
475         printf("Usage: %s [-s] [option] <kconfig-file>\n", progname);
476         printf("[option] is _one_ of the following:\n");
477         printf("  --listnewconfig         List new options\n");
478         printf("  --oldaskconfig          Start a new configuration using a line-oriented program\n");
479         printf("  --oldconfig             Update a configuration using a provided .config as base\n");
480         printf("  --silentoldconfig       Same as oldconfig, but quietly, additionally update deps\n");
481         printf("  --olddefconfig          Same as silentoldconfig but sets new symbols to their default value\n");
482         printf("  --oldnoconfig           An alias of olddefconfig\n");
483         printf("  --defconfig <file>      New config with default defined in <file>\n");
484         printf("  --savedefconfig <file>  Save the minimal current configuration to <file>\n");
485         printf("  --allnoconfig           New config where all options are answered with no\n");
486         printf("  --allyesconfig          New config where all options are answered with yes\n");
487         printf("  --allmodconfig          New config where all options are answered with mod\n");
488         printf("  --alldefconfig          New config with all symbols set to default\n");
489         printf("  --randconfig            New config with random answer to all options\n");
490 }
491 
492 int main(int ac, char **av)
493 {
494         const char *progname = av[0];
495         int opt;
496         const char *name, *defconfig_file = NULL /* gcc uninit */;
497         struct stat tmpstat;
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, "s", long_opts, NULL)) != -1) {
506                 if (opt == 's') {
507                         conf_set_message_callback(NULL);
508                         continue;
509                 }
510                 input_mode = (enum input_mode)opt;
511                 switch (opt) {
512                 case silentoldconfig:
513                         sync_kconfig = 1;
514                         break;
515                 case defconfig:
516                 case savedefconfig:
517                         defconfig_file = optarg;
518                         break;
519                 case randconfig:
520                 {
521                         struct timeval now;
522                         unsigned int seed;
523                         char *seed_env;
524 
525                         /*
526                          * Use microseconds derived seed,
527                          * compensate for systems where it may be zero
528                          */
529                         gettimeofday(&now, NULL);
530                         seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
531 
532                         seed_env = getenv("KCONFIG_SEED");
533                         if( seed_env && *seed_env ) {
534                                 char *endp;
535                                 int tmp = (int)strtol(seed_env, &endp, 0);
536                                 if (*endp == '\0') {
537                                         seed = tmp;
538                                 }
539                         }
540                         fprintf( stderr, "KCONFIG_SEED=0x%X\n", seed );
541                         srand(seed);
542                         break;
543                 }
544                 case oldaskconfig:
545                 case oldconfig:
546                 case allnoconfig:
547                 case allyesconfig:
548                 case allmodconfig:
549                 case alldefconfig:
550                 case listnewconfig:
551                 case olddefconfig:
552                         break;
553                 case '?':
554                         conf_usage(progname);
555                         exit(1);
556                         break;
557                 }
558         }
559         if (ac == optind) {
560                 printf(_("%s: Kconfig file missing\n"), av[0]);
561                 conf_usage(progname);
562                 exit(1);
563         }
564         name = av[optind];
565         conf_parse(name);
566         //zconfdump(stdout);
567         if (sync_kconfig) {
568                 name = conf_get_configname();
569                 if (stat(name, &tmpstat)) {
570                         fprintf(stderr, _("***\n"
571                                 "*** Configuration file \"%s\" not found!\n"
572                                 "***\n"
573                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
574                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
575                                 "***\n"), name);
576                         exit(1);
577                 }
578         }
579 
580         switch (input_mode) {
581         case defconfig:
582                 if (!defconfig_file)
583                         defconfig_file = conf_get_default_confname();
584                 if (conf_read(defconfig_file)) {
585                         printf(_("***\n"
586                                 "*** Can't find default configuration \"%s\"!\n"
587                                 "***\n"), defconfig_file);
588                         exit(1);
589                 }
590                 break;
591         case savedefconfig:
592         case silentoldconfig:
593         case oldaskconfig:
594         case oldconfig:
595         case listnewconfig:
596         case olddefconfig:
597                 conf_read(NULL);
598                 break;
599         case allnoconfig:
600         case allyesconfig:
601         case allmodconfig:
602         case alldefconfig:
603         case randconfig:
604                 name = getenv("KCONFIG_ALLCONFIG");
605                 if (!name)
606                         break;
607                 if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) {
608                         if (conf_read_simple(name, S_DEF_USER)) {
609                                 fprintf(stderr,
610                                         _("*** Can't read seed configuration \"%s\"!\n"),
611                                         name);
612                                 exit(1);
613                         }
614                         break;
615                 }
616                 switch (input_mode) {
617                 case allnoconfig:       name = "allno.config"; break;
618                 case allyesconfig:      name = "allyes.config"; break;
619                 case allmodconfig:      name = "allmod.config"; break;
620                 case alldefconfig:      name = "alldef.config"; break;
621                 case randconfig:        name = "allrandom.config"; break;
622                 default: break;
623                 }
624                 if (conf_read_simple(name, S_DEF_USER) &&
625                     conf_read_simple("all.config", S_DEF_USER)) {
626                         fprintf(stderr,
627                                 _("*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n"),
628                                 name);
629                         exit(1);
630                 }
631                 break;
632         default:
633                 break;
634         }
635 
636         if (sync_kconfig) {
637                 if (conf_get_changed()) {
638                         name = getenv("KCONFIG_NOSILENTUPDATE");
639                         if (name && *name) {
640                                 fprintf(stderr,
641                                         _("\n*** The configuration requires explicit update.\n\n"));
642                                 return 1;
643                         }
644                 }
645                 valid_stdin = tty_stdio;
646         }
647 
648         switch (input_mode) {
649         case allnoconfig:
650                 conf_set_all_new_symbols(def_no);
651                 break;
652         case allyesconfig:
653                 conf_set_all_new_symbols(def_yes);
654                 break;
655         case allmodconfig:
656                 conf_set_all_new_symbols(def_mod);
657                 break;
658         case alldefconfig:
659                 conf_set_all_new_symbols(def_default);
660                 break;
661         case randconfig:
662                 /* Really nothing to do in this loop */
663                 while (conf_set_all_new_symbols(def_random)) ;
664                 break;
665         case defconfig:
666                 conf_set_all_new_symbols(def_default);
667                 break;
668         case savedefconfig:
669                 break;
670         case oldaskconfig:
671                 rootEntry = &rootmenu;
672                 conf(&rootmenu);
673                 input_mode = silentoldconfig;
674                 /* fall through */
675         case oldconfig:
676         case listnewconfig:
677         case olddefconfig:
678         case silentoldconfig:
679                 /* Update until a loop caused no more changes */
680                 do {
681                         conf_cnt = 0;
682                         check_conf(&rootmenu);
683                 } while (conf_cnt &&
684                          (input_mode != listnewconfig &&
685                           input_mode != olddefconfig));
686                 break;
687         }
688 
689         if (sync_kconfig) {
690                 /* silentoldconfig is used during the build so we shall update autoconf.
691                  * All other commands are only used to generate a config.
692                  */
693                 if (conf_get_changed() && conf_write(NULL)) {
694                         fprintf(stderr, _("\n*** Error during writing of the configuration.\n\n"));
695                         exit(1);
696                 }
697                 if (conf_write_autoconf()) {
698                         fprintf(stderr, _("\n*** Error during update of the configuration.\n\n"));
699                         return 1;
700                 }
701         } else if (input_mode == savedefconfig) {
702                 if (conf_write_defconfig(defconfig_file)) {
703                         fprintf(stderr, _("n*** Error while saving defconfig to: %s\n\n"),
704                                 defconfig_file);
705                         return 1;
706                 }
707         } else if (input_mode != listnewconfig) {
708                 if (conf_write(NULL)) {
709                         fprintf(stderr, _("\n*** Error during writing of the configuration.\n\n"));
710                         exit(1);
711                 }
712         }
713         return 0;
714 }
715 
716 /*
717  * Helper function to facilitate fgets() by Jean Sacren.
718  */
719 void xfgets(char *str, int size, FILE *in)
720 {
721         if (fgets(str, size, in) == NULL)
722                 fprintf(stderr, "\nError in reading or end of file.\n");
723 }
724 

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