2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
16 #define LKC_DIRECT_LINK
19 static void conf_warning(const char *fmt, ...)
20 __attribute__ ((format (printf, 1, 2)));
22 static void conf_message(const char *fmt, ...)
23 __attribute__ ((format (printf, 1, 2)));
25 static const char *conf_filename;
26 static int conf_lineno, conf_warnings, conf_unsaved;
28 const char conf_defname[] = "arch/$ARCH/defconfig";
30 static void conf_warning(const char *fmt, ...)
34 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
35 vfprintf(stderr, fmt, ap);
36 fprintf(stderr, "\n");
41 static void conf_default_message_callback(const char *fmt, va_list ap)
48 static void (*conf_message_callback) (const char *fmt, va_list ap) =
49 conf_default_message_callback;
50 void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap))
52 conf_message_callback = fn;
55 static void conf_message(const char *fmt, ...)
60 if (conf_message_callback)
61 conf_message_callback(fmt, ap);
64 const char *conf_get_configname(void)
66 char *name = getenv("KCONFIG_CONFIG");
68 return name ? name : ".config";
71 const char *conf_get_autoconfig_name(void)
73 char *name = getenv("KCONFIG_AUTOCONFIG");
75 return name ? name : "include/config/auto.conf";
78 static char *conf_expand_value(const char *in)
82 static char res_value[SYMBOL_MAXLENGTH];
83 char *dst, name[SYMBOL_MAXLENGTH];
87 while ((src = strchr(in, '$'))) {
88 strncat(res_value, in, src - in);
91 while (isalnum(*src) || *src == '_')
94 sym = sym_lookup(name, 0);
96 strcat(res_value, sym_get_string_value(sym));
99 strcat(res_value, in);
104 char *conf_get_default_confname(void)
107 static char fullname[PATH_MAX+1];
110 name = conf_expand_value(conf_defname);
111 env = getenv(SRCTREE);
113 sprintf(fullname, "%s/%s", env, name);
114 if (!stat(fullname, &buf))
120 static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
127 sym->def[def].tri = mod;
128 sym->flags |= def_flags;
134 sym->def[def].tri = yes;
135 sym->flags |= def_flags;
139 sym->def[def].tri = no;
140 sym->flags |= def_flags;
143 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
147 for (p2 = p; *p2 && !isspace(*p2); p2++)
149 sym->type = S_STRING;
156 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
161 memmove(p2, p2 + 1, strlen(p2));
164 conf_warning("invalid string found");
171 if (sym_string_valid(sym, p)) {
172 sym->def[def].val = strdup(p);
173 sym->flags |= def_flags;
175 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
185 int conf_read_simple(const char *name, int def)
194 in = zconf_fopen(name);
196 struct property *prop;
198 name = conf_get_configname();
199 in = zconf_fopen(name);
202 sym_add_change_count(1);
203 if (!sym_defconfig_list) {
205 sym_calc_value(modules_sym);
209 for_all_defaults(sym_defconfig_list, prop) {
210 if (expr_calc_value(prop->visible.expr) == no ||
211 prop->expr->type != E_SYMBOL)
213 name = conf_expand_value(prop->expr->left.sym->name);
214 in = zconf_fopen(name);
216 conf_message(_("using defaults found in %s"),
226 conf_filename = name;
231 def_flags = SYMBOL_DEF << def;
232 for_all_symbols(i, sym) {
233 sym->flags |= SYMBOL_CHANGED;
234 sym->flags &= ~(def_flags|SYMBOL_VALID);
235 if (sym_is_choice(sym))
236 sym->flags |= def_flags;
241 if (sym->def[def].val)
242 free(sym->def[def].val);
245 sym->def[def].val = NULL;
246 sym->def[def].tri = no;
250 while (fgets(line, sizeof(line), in)) {
253 if (line[0] == '#') {
254 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
256 p = strchr(line + 2 + strlen(CONFIG_), ' ');
260 if (strncmp(p, "is not set", 10))
262 if (def == S_DEF_USER) {
263 sym = sym_find(line + 2 + strlen(CONFIG_));
265 sym_add_change_count(1);
269 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
270 if (sym->type == S_UNKNOWN)
271 sym->type = S_BOOLEAN;
273 if (sym->flags & def_flags) {
274 conf_warning("override: reassigning to symbol %s", sym->name);
279 sym->def[def].tri = no;
280 sym->flags |= def_flags;
285 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
286 p = strchr(line + strlen(CONFIG_), '=');
290 p2 = strchr(p, '\n');
296 if (def == S_DEF_USER) {
297 sym = sym_find(line + strlen(CONFIG_));
299 sym_add_change_count(1);
303 sym = sym_lookup(line + strlen(CONFIG_), 0);
304 if (sym->type == S_UNKNOWN)
307 if (sym->flags & def_flags) {
308 conf_warning("override: reassigning to symbol %s", sym->name);
310 if (conf_set_sym_val(sym, def, def_flags, p))
313 if (line[0] != '\r' && line[0] != '\n')
314 conf_warning("unexpected data");
318 if (sym && sym_is_choice_value(sym)) {
319 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
320 switch (sym->def[def].tri) {
324 if (cs->def[def].tri == yes) {
325 conf_warning("%s creates inconsistent choice state", sym->name);
326 cs->flags &= ~def_flags;
330 if (cs->def[def].tri != no)
331 conf_warning("override: %s changes choice state", sym->name);
332 cs->def[def].val = sym;
335 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
341 sym_calc_value(modules_sym);
345 int conf_read(const char *name)
347 struct symbol *sym, *choice_sym;
348 struct property *prop;
352 sym_set_change_count(0);
354 if (conf_read_simple(name, S_DEF_USER))
357 for_all_symbols(i, sym) {
359 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
361 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
362 /* check that calculated value agrees with saved value */
366 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
368 if (!sym_is_choice(sym))
372 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
376 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
377 /* no previous value and not saved */
380 /* maybe print value in verbose mode... */
382 if (!sym_is_choice(sym))
384 /* The choice symbol only has a set value (and thus is not new)
385 * if all its visible childs have values.
387 prop = sym_get_choice_prop(sym);
389 expr_list_for_each_sym(prop->expr, e, choice_sym)
390 if (choice_sym->visible != no)
391 flags &= choice_sym->flags;
392 sym->flags &= flags | ~SYMBOL_DEF_USER;
395 for_all_symbols(i, sym) {
396 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
397 /* Reset values of generates values, so they'll appear
398 * as new, if they should become visible, but that
399 * doesn't quite work if the Kconfig and the saved
400 * configuration disagree.
402 if (sym->visible == no && !conf_unsaved)
403 sym->flags &= ~SYMBOL_DEF_USER;
408 /* Reset a string value if it's out of range */
409 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
411 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
420 sym_add_change_count(conf_warnings || conf_unsaved);
425 /* Write a S_STRING */
426 static void conf_write_string(bool headerfile, const char *name,
427 const char *str, FILE *out)
431 fprintf(out, "#define %s%s \"", CONFIG_, name);
433 fprintf(out, "%s%s=\"", CONFIG_, name);
436 l = strcspn(str, "\"\\");
438 xfwrite(str, l, 1, out);
443 fprintf(out, "\\%c", *str++);
448 static void conf_write_symbol(struct symbol *sym, FILE *out, bool write_no)
455 switch (sym_get_tristate_value(sym)) {
458 fprintf(out, "# %s%s is not set\n",
462 fprintf(out, "%s%s=m\n", CONFIG_, sym->name);
465 fprintf(out, "%s%s=y\n", CONFIG_, sym->name);
470 conf_write_string(false, sym->name, sym_get_string_value(sym), out);
474 str = sym_get_string_value(sym);
475 fprintf(out, "%s%s=%s\n", CONFIG_, sym->name, str);
484 * Write out a minimal config.
485 * All values that has default values are skipped as this is redundant.
487 int conf_write_defconfig(const char *filename)
493 out = fopen(filename, "w");
497 sym_clear_all_valid();
499 /* Traverse all menus to find all relevant symbols */
500 menu = rootmenu.list;
506 if (!menu_is_visible(menu))
508 } else if (!sym_is_choice(sym)) {
510 if (!(sym->flags & SYMBOL_WRITE))
512 sym->flags &= ~SYMBOL_WRITE;
513 /* If we cannot change the symbol - skip */
514 if (!sym_is_changable(sym))
516 /* If symbol equals to default value - skip */
517 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
521 * If symbol is a choice value and equals to the
522 * default for a choice - skip.
523 * But only if value is bool and equal to "y" and
524 * choice is not "optional".
525 * (If choice is "optional" then all values can be "n")
527 if (sym_is_choice_value(sym)) {
531 cs = prop_get_symbol(sym_get_choice_prop(sym));
532 ds = sym_choice_default(cs);
533 if (!sym_is_optional(cs) && sym == ds) {
534 if ((sym->type == S_BOOLEAN) &&
535 sym_get_tristate_value(sym) == yes)
539 conf_write_symbol(sym, out, true);
542 if (menu->list != NULL) {
545 else if (menu->next != NULL) {
548 while ((menu = menu->parent)) {
549 if (menu->next != NULL) {
560 int conf_write(const char *name)
565 const char *basename;
567 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
571 if (name && name[0]) {
575 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
576 strcpy(dirname, name);
577 strcat(dirname, "/");
578 basename = conf_get_configname();
579 } else if ((slash = strrchr(name, '/'))) {
580 int size = slash - name + 1;
581 memcpy(dirname, name, size);
584 basename = slash + 1;
586 basename = conf_get_configname();
590 basename = conf_get_configname();
592 sprintf(newname, "%s%s", dirname, basename);
593 env = getenv("KCONFIG_OVERWRITECONFIG");
595 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
596 out = fopen(tmpname, "w");
599 out = fopen(newname, "w");
605 "# Automatically generated make config: don't edit\n"
608 rootmenu.prompt->text);
610 if (!conf_get_changed())
611 sym_clear_all_valid();
613 menu = rootmenu.list;
617 if (!menu_is_visible(menu))
619 str = menu_get_prompt(menu);
624 } else if (!(sym->flags & SYMBOL_CHOICE)) {
626 if (!(sym->flags & SYMBOL_WRITE))
628 sym->flags &= ~SYMBOL_WRITE;
629 /* Write config symbol to file */
630 conf_write_symbol(sym, out, true);
640 else while ((menu = menu->parent)) {
650 strcat(dirname, basename);
651 strcat(dirname, ".old");
652 rename(newname, dirname);
653 if (rename(tmpname, newname))
657 conf_message(_("configuration written to %s"), newname);
659 sym_set_change_count(0);
664 static int conf_split_config(void)
667 char path[PATH_MAX+1];
673 name = conf_get_autoconfig_name();
674 conf_read_simple(name, S_DEF_AUTO);
676 if (chdir("include/config"))
680 for_all_symbols(i, sym) {
682 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
684 if (sym->flags & SYMBOL_WRITE) {
685 if (sym->flags & SYMBOL_DEF_AUTO) {
687 * symbol has old and new value,
693 if (sym_get_tristate_value(sym) ==
694 sym->def[S_DEF_AUTO].tri)
700 if (!strcmp(sym_get_string_value(sym),
701 sym->def[S_DEF_AUTO].val))
709 * If there is no old value, only 'no' (unset)
710 * is allowed as new value.
715 if (sym_get_tristate_value(sym) == no)
722 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
723 /* There is neither an old nor a new value. */
726 * There is an old value, but no new value ('no' (unset)
727 * isn't saved in auto.conf, so the old value is always
728 * different from 'no').
731 /* Replace all '_' and append ".h" */
736 *d++ = (c == '_') ? '/' : c;
740 /* Assume directory path already exists. */
741 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
743 if (errno != ENOENT) {
748 * Create directory components,
749 * unless they exist already.
752 while ((d = strchr(d, '/'))) {
754 if (stat(path, &sb) && mkdir(path, 0755)) {
761 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
776 int conf_write_autoconf(void)
781 FILE *out, *tristate, *out_h;
784 sym_clear_all_valid();
786 file_write_dep("include/config/auto.conf.cmd");
788 if (conf_split_config())
791 out = fopen(".tmpconfig", "w");
795 tristate = fopen(".tmpconfig_tristate", "w");
801 out_h = fopen(".tmpconfig.h", "w");
809 "# Automatically generated make config: don't edit\n"
812 rootmenu.prompt->text);
813 fprintf(tristate, "#\n"
814 "# Automatically generated - do not edit\n"
816 fprintf(out_h, "/*\n"
817 " * Automatically generated C config: don't edit\n"
820 rootmenu.prompt->text);
822 for_all_symbols(i, sym) {
824 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
827 /* write symbol to config file */
828 conf_write_symbol(sym, out, false);
830 /* update autoconf and tristate files */
834 switch (sym_get_tristate_value(sym)) {
838 fprintf(tristate, "%s%s=M\n",
840 fprintf(out_h, "#define %s%s_MODULE 1\n",
844 if (sym->type == S_TRISTATE)
845 fprintf(tristate,"%s%s=Y\n",
847 fprintf(out_h, "#define %s%s 1\n",
853 conf_write_string(true, sym->name, sym_get_string_value(sym), out_h);
856 str = sym_get_string_value(sym);
857 if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
858 fprintf(out_h, "#define %s%s 0x%s\n",
859 CONFIG_, sym->name, str);
863 str = sym_get_string_value(sym);
864 fprintf(out_h, "#define %s%s %s\n",
865 CONFIG_, sym->name, str);
875 name = getenv("KCONFIG_AUTOHEADER");
877 name = "include/generated/autoconf.h";
878 if (rename(".tmpconfig.h", name))
880 name = getenv("KCONFIG_TRISTATE");
882 name = "include/config/tristate.conf";
883 if (rename(".tmpconfig_tristate", name))
885 name = conf_get_autoconfig_name();
887 * This must be the last step, kbuild has a dependency on auto.conf
888 * and this marks the successful completion of the previous steps.
890 if (rename(".tmpconfig", name))
896 static int sym_change_count;
897 static void (*conf_changed_callback)(void);
899 void sym_set_change_count(int count)
901 int _sym_change_count = sym_change_count;
902 sym_change_count = count;
903 if (conf_changed_callback &&
904 (bool)_sym_change_count != (bool)count)
905 conf_changed_callback();
908 void sym_add_change_count(int count)
910 sym_set_change_count(count + sym_change_count);
913 bool conf_get_changed(void)
915 return sym_change_count;
918 void conf_set_changed_callback(void (*fn)(void))
920 conf_changed_callback = fn;
923 static void randomize_choice_values(struct symbol *csym)
925 struct property *prop;
931 * If choice is mod then we may have more items selected
932 * and if no then no-one.
933 * In both cases stop.
935 if (csym->curr.tri != yes)
938 prop = sym_get_choice_prop(csym);
940 /* count entries in choice block */
942 expr_list_for_each_sym(prop->expr, e, sym)
946 * find a random value and set it to yes,
947 * set the rest to no so we have only one set
949 def = (rand() % cnt);
952 expr_list_for_each_sym(prop->expr, e, sym) {
954 sym->def[S_DEF_USER].tri = yes;
955 csym->def[S_DEF_USER].val = sym;
958 sym->def[S_DEF_USER].tri = no;
961 csym->flags |= SYMBOL_DEF_USER;
962 /* clear VALID to get value calculated */
963 csym->flags &= ~(SYMBOL_VALID);
966 static void set_all_choice_values(struct symbol *csym)
968 struct property *prop;
972 prop = sym_get_choice_prop(csym);
975 * Set all non-assinged choice values to no
977 expr_list_for_each_sym(prop->expr, e, sym) {
978 if (!sym_has_value(sym))
979 sym->def[S_DEF_USER].tri = no;
981 csym->flags |= SYMBOL_DEF_USER;
982 /* clear VALID to get value calculated */
983 csym->flags &= ~(SYMBOL_VALID);
986 void conf_set_all_new_symbols(enum conf_def_mode mode)
988 struct symbol *sym, *csym;
991 for_all_symbols(i, sym) {
992 if (sym_has_value(sym))
994 switch (sym_get_type(sym)) {
999 sym->def[S_DEF_USER].tri = yes;
1002 sym->def[S_DEF_USER].tri = mod;
1005 sym->def[S_DEF_USER].tri = no;
1008 cnt = sym_get_type(sym) == S_TRISTATE ? 3 : 2;
1009 sym->def[S_DEF_USER].tri = (tristate)(rand() % cnt);
1014 if (!(sym_is_choice(sym) && mode == def_random))
1015 sym->flags |= SYMBOL_DEF_USER;
1023 sym_clear_all_valid();
1026 * We have different type of choice blocks.
1027 * If curr.tri equals to mod then we can select several
1028 * choice symbols in one block.
1029 * In this case we do nothing.
1030 * If curr.tri equals yes then only one symbol can be
1031 * selected in a choice block and we set it to yes,
1032 * and the rest to no.
1034 for_all_symbols(i, csym) {
1035 if (sym_has_value(csym) || !sym_is_choice(csym))
1038 sym_calc_value(csym);
1039 if (mode == def_random)
1040 randomize_choice_values(csym);
1042 set_all_choice_values(csym);