d6cfa0ffbaf086398dd3f7b054ad9bf9a6d13ca4
[linux-2.6.git] / scripts / kconfig / conf.c
1 /*
2  * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3  * Released under the terms of the GNU GPL v2.0.
4  */
5
6 #include <locale.h>
7 #include <ctype.h>
8 #include <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 #define LKC_DIRECT_LINK
18 #include "lkc.h"
19
20 static void conf(struct menu *menu);
21 static void check_conf(struct menu *menu);
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         oldnoconfig,
36 } input_mode = oldaskconfig;
37
38 char *defconfig_file;
39
40 static int indent = 1;
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         case oldaskconfig:
110                 fflush(stdout);
111                 xfgets(line, 128, stdin);
112                 return 1;
113         default:
114                 break;
115         }
116
117         switch (type) {
118         case S_INT:
119         case S_HEX:
120         case S_STRING:
121                 printf("%s\n", def);
122                 return 1;
123         default:
124                 ;
125         }
126         printf("%s", line);
127         return 1;
128 }
129
130 static int conf_string(struct menu *menu)
131 {
132         struct symbol *sym = menu->sym;
133         const char *def;
134
135         while (1) {
136                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
137                 printf("(%s) ", sym->name);
138                 def = sym_get_string_value(sym);
139                 if (sym_get_string_value(sym))
140                         printf("[%s] ", def);
141                 if (!conf_askvalue(sym, def))
142                         return 0;
143                 switch (line[0]) {
144                 case '\n':
145                         break;
146                 case '?':
147                         /* print help */
148                         if (line[1] == '\n') {
149                                 print_help(menu);
150                                 def = NULL;
151                                 break;
152                         }
153                 default:
154                         line[strlen(line)-1] = 0;
155                         def = line;
156                 }
157                 if (def && sym_set_string_value(sym, def))
158                         return 0;
159         }
160 }
161
162 static int conf_sym(struct menu *menu)
163 {
164         struct symbol *sym = menu->sym;
165         tristate oldval, newval;
166
167         while (1) {
168                 printf("%*s%s ", indent - 1, "", _(menu->prompt->text));
169                 if (sym->name)
170                         printf("(%s) ", sym->name);
171                 putchar('[');
172                 oldval = sym_get_tristate_value(sym);
173                 switch (oldval) {
174                 case no:
175                         putchar('N');
176                         break;
177                 case mod:
178                         putchar('M');
179                         break;
180                 case yes:
181                         putchar('Y');
182                         break;
183                 }
184                 if (oldval != no && sym_tristate_within_range(sym, no))
185                         printf("/n");
186                 if (oldval != mod && sym_tristate_within_range(sym, mod))
187                         printf("/m");
188                 if (oldval != yes && sym_tristate_within_range(sym, yes))
189                         printf("/y");
190                 if (menu_has_help(menu))
191                         printf("/?");
192                 printf("] ");
193                 if (!conf_askvalue(sym, sym_get_string_value(sym)))
194                         return 0;
195                 strip(line);
196
197                 switch (line[0]) {
198                 case 'n':
199                 case 'N':
200                         newval = no;
201                         if (!line[1] || !strcmp(&line[1], "o"))
202                                 break;
203                         continue;
204                 case 'm':
205                 case 'M':
206                         newval = mod;
207                         if (!line[1])
208                                 break;
209                         continue;
210                 case 'y':
211                 case 'Y':
212                         newval = yes;
213                         if (!line[1] || !strcmp(&line[1], "es"))
214                                 break;
215                         continue;
216                 case 0:
217                         newval = oldval;
218                         break;
219                 case '?':
220                         goto help;
221                 default:
222                         continue;
223                 }
224                 if (sym_set_tristate_value(sym, newval))
225                         return 0;
226 help:
227                 print_help(menu);
228         }
229 }
230
231 static int conf_choice(struct menu *menu)
232 {
233         struct symbol *sym, *def_sym;
234         struct menu *child;
235         bool is_new;
236
237         sym = menu->sym;
238         is_new = !sym_has_value(sym);
239         if (sym_is_changable(sym)) {
240                 conf_sym(menu);
241                 sym_calc_value(sym);
242                 switch (sym_get_tristate_value(sym)) {
243                 case no:
244                         return 1;
245                 case mod:
246                         return 0;
247                 case yes:
248                         break;
249                 }
250         } else {
251                 switch (sym_get_tristate_value(sym)) {
252                 case no:
253                         return 1;
254                 case mod:
255                         printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
256                         return 0;
257                 case yes:
258                         break;
259                 }
260         }
261
262         while (1) {
263                 int cnt, def;
264
265                 printf("%*s%s\n", indent - 1, "", _(menu_get_prompt(menu)));
266                 def_sym = sym_get_choice_value(sym);
267                 cnt = def = 0;
268                 line[0] = 0;
269                 for (child = menu->list; child; child = child->next) {
270                         if (!menu_is_visible(child))
271                                 continue;
272                         if (!child->sym) {
273                                 printf("%*c %s\n", indent, '*', _(menu_get_prompt(child)));
274                                 continue;
275                         }
276                         cnt++;
277                         if (child->sym == def_sym) {
278                                 def = cnt;
279                                 printf("%*c", indent, '>');
280                         } else
281                                 printf("%*c", indent, ' ');
282                         printf(" %d. %s", cnt, _(menu_get_prompt(child)));
283                         if (child->sym->name)
284                                 printf(" (%s)", child->sym->name);
285                         if (!sym_has_value(child->sym))
286                                 printf(_(" (NEW)"));
287                         printf("\n");
288                 }
289                 printf(_("%*schoice"), indent - 1, "");
290                 if (cnt == 1) {
291                         printf("[1]: 1\n");
292                         goto conf_childs;
293                 }
294                 printf("[1-%d", cnt);
295                 if (menu_has_help(menu))
296                         printf("?");
297                 printf("]: ");
298                 switch (input_mode) {
299                 case oldconfig:
300                 case silentoldconfig:
301                         if (!is_new) {
302                                 cnt = def;
303                                 printf("%d\n", cnt);
304                                 break;
305                         }
306                         check_stdin();
307                 case oldaskconfig:
308                         fflush(stdout);
309                         xfgets(line, 128, stdin);
310                         strip(line);
311                         if (line[0] == '?') {
312                                 print_help(menu);
313                                 continue;
314                         }
315                         if (!line[0])
316                                 cnt = def;
317                         else if (isdigit(line[0]))
318                                 cnt = atoi(line);
319                         else
320                                 continue;
321                         break;
322                 default:
323                         break;
324                 }
325
326         conf_childs:
327                 for (child = menu->list; child; child = child->next) {
328                         if (!child->sym || !menu_is_visible(child))
329                                 continue;
330                         if (!--cnt)
331                                 break;
332                 }
333                 if (!child)
334                         continue;
335                 if (line[strlen(line) - 1] == '?') {
336                         print_help(child);
337                         continue;
338                 }
339                 sym_set_choice_value(sym, child->sym);
340                 for (child = child->list; child; child = child->next) {
341                         indent += 2;
342                         conf(child);
343                         indent -= 2;
344                 }
345                 return 1;
346         }
347 }
348
349 static void conf(struct menu *menu)
350 {
351         struct symbol *sym;
352         struct property *prop;
353         struct menu *child;
354
355         if (!menu_is_visible(menu))
356                 return;
357
358         sym = menu->sym;
359         prop = menu->prompt;
360         if (prop) {
361                 const char *prompt;
362
363                 switch (prop->type) {
364                 case P_MENU:
365                         if ((input_mode == silentoldconfig ||
366                              input_mode == listnewconfig ||
367                              input_mode == oldnoconfig) &&
368                             rootEntry != menu) {
369                                 check_conf(menu);
370                                 return;
371                         }
372                 case P_COMMENT:
373                         prompt = menu_get_prompt(menu);
374                         if (prompt)
375                                 printf("%*c\n%*c %s\n%*c\n",
376                                         indent, '*',
377                                         indent, '*', _(prompt),
378                                         indent, '*');
379                 default:
380                         ;
381                 }
382         }
383
384         if (!sym)
385                 goto conf_childs;
386
387         if (sym_is_choice(sym)) {
388                 conf_choice(menu);
389                 if (sym->curr.tri != mod)
390                         return;
391                 goto conf_childs;
392         }
393
394         switch (sym->type) {
395         case S_INT:
396         case S_HEX:
397         case S_STRING:
398                 conf_string(menu);
399                 break;
400         default:
401                 conf_sym(menu);
402                 break;
403         }
404
405 conf_childs:
406         if (sym)
407                 indent += 2;
408         for (child = menu->list; child; child = child->next)
409                 conf(child);
410         if (sym)
411                 indent -= 2;
412 }
413
414 static void check_conf(struct menu *menu)
415 {
416         struct symbol *sym;
417         struct menu *child;
418
419         if (!menu_is_visible(menu))
420                 return;
421
422         sym = menu->sym;
423         if (sym && !sym_has_value(sym)) {
424                 if (sym_is_changable(sym) ||
425                     (sym_is_choice(sym) && sym_get_tristate_value(sym) == yes)) {
426                         if (input_mode == listnewconfig) {
427                                 if (sym->name && !sym_is_choice_value(sym)) {
428                                         printf("%s%s\n", CONFIG_, sym->name);
429                                 }
430                         } else if (input_mode != oldnoconfig) {
431                                 if (!conf_cnt++)
432                                         printf(_("*\n* Restart config...\n*\n"));
433                                 rootEntry = menu_get_parent_menu(menu);
434                                 conf(rootEntry);
435                         }
436                 }
437         }
438
439         for (child = menu->list; child; child = child->next)
440                 check_conf(child);
441 }
442
443 static struct option long_opts[] = {
444         {"oldaskconfig",    no_argument,       NULL, oldaskconfig},
445         {"oldconfig",       no_argument,       NULL, oldconfig},
446         {"silentoldconfig", no_argument,       NULL, silentoldconfig},
447         {"defconfig",       optional_argument, NULL, defconfig},
448         {"savedefconfig",   required_argument, NULL, savedefconfig},
449         {"allnoconfig",     no_argument,       NULL, allnoconfig},
450         {"allyesconfig",    no_argument,       NULL, allyesconfig},
451         {"allmodconfig",    no_argument,       NULL, allmodconfig},
452         {"alldefconfig",    no_argument,       NULL, alldefconfig},
453         {"randconfig",      no_argument,       NULL, randconfig},
454         {"listnewconfig",   no_argument,       NULL, listnewconfig},
455         {"oldnoconfig",     no_argument,       NULL, oldnoconfig},
456         {NULL, 0, NULL, 0}
457 };
458
459 int main(int ac, char **av)
460 {
461         int opt;
462         const char *name;
463         struct stat tmpstat;
464
465         setlocale(LC_ALL, "");
466         bindtextdomain(PACKAGE, LOCALEDIR);
467         textdomain(PACKAGE);
468
469         while ((opt = getopt_long(ac, av, "", long_opts, NULL)) != -1) {
470                 input_mode = (enum input_mode)opt;
471                 switch (opt) {
472                 case silentoldconfig:
473                         sync_kconfig = 1;
474                         break;
475                 case defconfig:
476                 case savedefconfig:
477                         defconfig_file = optarg;
478                         break;
479                 case randconfig:
480                 {
481                         struct timeval now;
482                         unsigned int seed;
483
484                         /*
485                          * Use microseconds derived seed,
486                          * compensate for systems where it may be zero
487                          */
488                         gettimeofday(&now, NULL);
489
490                         seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
491                         srand(seed);
492                         break;
493                 }
494                 case '?':
495                         fprintf(stderr, _("See README for usage info\n"));
496                         exit(1);
497                         break;
498                 }
499         }
500         if (ac == optind) {
501                 printf(_("%s: Kconfig file missing\n"), av[0]);
502                 exit(1);
503         }
504         name = av[optind];
505         conf_parse(name);
506         //zconfdump(stdout);
507         if (sync_kconfig) {
508                 name = conf_get_configname();
509                 if (stat(name, &tmpstat)) {
510                         fprintf(stderr, _("***\n"
511                                 "*** You have not yet configured your kernel!\n"
512                                 "*** (missing kernel config file \"%s\")\n"
513                                 "***\n"
514                                 "*** Please run some configurator (e.g. \"make oldconfig\" or\n"
515                                 "*** \"make menuconfig\" or \"make xconfig\").\n"
516                                 "***\n"), name);
517                         exit(1);
518                 }
519         }
520
521         switch (input_mode) {
522         case defconfig:
523                 if (!defconfig_file)
524                         defconfig_file = conf_get_default_confname();
525                 if (conf_read(defconfig_file)) {
526                         printf(_("***\n"
527                                 "*** Can't find default configuration \"%s\"!\n"
528                                 "***\n"), defconfig_file);
529                         exit(1);
530                 }
531                 break;
532         case savedefconfig:
533                 conf_read(NULL);
534                 break;
535         case silentoldconfig:
536         case oldaskconfig:
537         case oldconfig:
538         case listnewconfig:
539         case oldnoconfig:
540                 conf_read(NULL);
541                 break;
542         case allnoconfig:
543         case allyesconfig:
544         case allmodconfig:
545         case alldefconfig:
546         case randconfig:
547                 name = getenv("KCONFIG_ALLCONFIG");
548                 if (name && !stat(name, &tmpstat)) {
549                         conf_read_simple(name, S_DEF_USER);
550                         break;
551                 }
552                 switch (input_mode) {
553                 case allnoconfig:       name = "allno.config"; break;
554                 case allyesconfig:      name = "allyes.config"; break;
555                 case allmodconfig:      name = "allmod.config"; break;
556                 case alldefconfig:      name = "alldef.config"; break;
557                 case randconfig:        name = "allrandom.config"; break;
558                 default: break;
559                 }
560                 if (!stat(name, &tmpstat))
561                         conf_read_simple(name, S_DEF_USER);
562                 else if (!stat("all.config", &tmpstat))
563                         conf_read_simple("all.config", S_DEF_USER);
564                 break;
565         default:
566                 break;
567         }
568
569         if (sync_kconfig) {
570                 if (conf_get_changed()) {
571                         name = getenv("KCONFIG_NOSILENTUPDATE");
572                         if (name && *name) {
573                                 fprintf(stderr,
574                                         _("\n*** Kernel configuration requires explicit update.\n\n"));
575                                 return 1;
576                         }
577                 }
578                 valid_stdin = isatty(0) && isatty(1) && isatty(2);
579         }
580
581         switch (input_mode) {
582         case allnoconfig:
583                 conf_set_all_new_symbols(def_no);
584                 break;
585         case allyesconfig:
586                 conf_set_all_new_symbols(def_yes);
587                 break;
588         case allmodconfig:
589                 conf_set_all_new_symbols(def_mod);
590                 break;
591         case alldefconfig:
592                 conf_set_all_new_symbols(def_default);
593                 break;
594         case randconfig:
595                 conf_set_all_new_symbols(def_random);
596                 break;
597         case defconfig:
598                 conf_set_all_new_symbols(def_default);
599                 break;
600         case savedefconfig:
601                 break;
602         case oldconfig:
603         case oldaskconfig:
604                 rootEntry = &rootmenu;
605                 conf(&rootmenu);
606                 input_mode = silentoldconfig;
607                 /* fall through */
608         case listnewconfig:
609         case oldnoconfig:
610         case silentoldconfig:
611                 /* Update until a loop caused no more changes */
612                 do {
613                         conf_cnt = 0;
614                         check_conf(&rootmenu);
615                 } while (conf_cnt &&
616                          (input_mode != listnewconfig &&
617                           input_mode != oldnoconfig));
618                 break;
619         }
620
621         if (sync_kconfig) {
622                 /* silentoldconfig is used during the build so we shall update autoconf.
623                  * All other commands are only used to generate a config.
624                  */
625                 if (conf_get_changed() && conf_write(NULL)) {
626                         fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
627                         exit(1);
628                 }
629                 if (conf_write_autoconf()) {
630                         fprintf(stderr, _("\n*** Error during update of the kernel configuration.\n\n"));
631                         return 1;
632                 }
633         } else if (input_mode == savedefconfig) {
634                 if (conf_write_defconfig(defconfig_file)) {
635                         fprintf(stderr, _("n*** Error while saving defconfig to: %s\n\n"),
636                                 defconfig_file);
637                         return 1;
638                 }
639         } else if (input_mode != listnewconfig) {
640                 if (conf_write(NULL)) {
641                         fprintf(stderr, _("\n*** Error during writing of the kernel configuration.\n\n"));
642                         exit(1);
643                 }
644         }
645         return 0;
646 }
647 /*
648  * Helper function to facilitate fgets() by Jean Sacren.
649  */
650 void xfgets(str, size, in)
651         char *str;
652         int size;
653         FILE *in;
654 {
655         if (fgets(str, size, in) == NULL)
656                 fprintf(stderr, "\nError in reading or end of file.\n");
657 }