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;
133 sym->def[def].tri = yes;
134 sym->flags |= def_flags;
138 sym->def[def].tri = no;
139 sym->flags |= def_flags;
142 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
146 for (p2 = p; *p2 && !isspace(*p2); p2++)
148 sym->type = S_STRING;
154 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
159 memmove(p2, p2 + 1, strlen(p2));
162 conf_warning("invalid string found");
168 if (sym_string_valid(sym, p)) {
169 sym->def[def].val = strdup(p);
170 sym->flags |= def_flags;
172 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
182 int conf_read_simple(const char *name, int def)
191 in = zconf_fopen(name);
193 struct property *prop;
195 name = conf_get_configname();
196 in = zconf_fopen(name);
199 sym_add_change_count(1);
200 if (!sym_defconfig_list) {
202 sym_calc_value(modules_sym);
206 for_all_defaults(sym_defconfig_list, prop) {
207 if (expr_calc_value(prop->visible.expr) == no ||
208 prop->expr->type != E_SYMBOL)
210 name = conf_expand_value(prop->expr->left.sym->name);
211 in = zconf_fopen(name);
213 conf_message(_("using defaults found in %s"),
223 conf_filename = name;
228 def_flags = SYMBOL_DEF << def;
229 for_all_symbols(i, sym) {
230 sym->flags |= SYMBOL_CHANGED;
231 sym->flags &= ~(def_flags|SYMBOL_VALID);
232 if (sym_is_choice(sym))
233 sym->flags |= def_flags;
238 if (sym->def[def].val)
239 free(sym->def[def].val);
241 sym->def[def].val = NULL;
242 sym->def[def].tri = no;
246 while (fgets(line, sizeof(line), in)) {
249 if (line[0] == '#') {
250 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
252 p = strchr(line + 2 + strlen(CONFIG_), ' ');
256 if (strncmp(p, "is not set", 10))
258 if (def == S_DEF_USER) {
259 sym = sym_find(line + 2 + strlen(CONFIG_));
261 sym_add_change_count(1);
265 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
266 if (sym->type == S_UNKNOWN)
267 sym->type = S_BOOLEAN;
269 if (sym->flags & def_flags) {
270 conf_warning("override: reassigning to symbol %s", sym->name);
275 sym->def[def].tri = no;
276 sym->flags |= def_flags;
281 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
282 p = strchr(line + strlen(CONFIG_), '=');
286 p2 = strchr(p, '\n');
292 if (def == S_DEF_USER) {
293 sym = sym_find(line + strlen(CONFIG_));
295 sym_add_change_count(1);
299 sym = sym_lookup(line + strlen(CONFIG_), 0);
300 if (sym->type == S_UNKNOWN)
303 if (sym->flags & def_flags) {
304 conf_warning("override: reassigning to symbol %s", sym->name);
306 if (conf_set_sym_val(sym, def, def_flags, p))
309 if (line[0] != '\r' && line[0] != '\n')
310 conf_warning("unexpected data");
314 if (sym && sym_is_choice_value(sym)) {
315 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
316 switch (sym->def[def].tri) {
320 if (cs->def[def].tri == yes) {
321 conf_warning("%s creates inconsistent choice state", sym->name);
322 cs->flags &= ~def_flags;
326 if (cs->def[def].tri != no)
327 conf_warning("override: %s changes choice state", sym->name);
328 cs->def[def].val = sym;
331 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
337 sym_calc_value(modules_sym);
341 int conf_read(const char *name)
343 struct symbol *sym, *choice_sym;
344 struct property *prop;
348 sym_set_change_count(0);
350 if (conf_read_simple(name, S_DEF_USER))
353 for_all_symbols(i, sym) {
355 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
357 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
358 /* check that calculated value agrees with saved value */
362 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
364 if (!sym_is_choice(sym))
367 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
371 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
372 /* no previous value and not saved */
375 /* maybe print value in verbose mode... */
377 if (!sym_is_choice(sym))
379 /* The choice symbol only has a set value (and thus is not new)
380 * if all its visible childs have values.
382 prop = sym_get_choice_prop(sym);
384 expr_list_for_each_sym(prop->expr, e, choice_sym)
385 if (choice_sym->visible != no)
386 flags &= choice_sym->flags;
387 sym->flags &= flags | ~SYMBOL_DEF_USER;
390 for_all_symbols(i, sym) {
391 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
392 /* Reset values of generates values, so they'll appear
393 * as new, if they should become visible, but that
394 * doesn't quite work if the Kconfig and the saved
395 * configuration disagree.
397 if (sym->visible == no && !conf_unsaved)
398 sym->flags &= ~SYMBOL_DEF_USER;
403 /* Reset a string value if it's out of range */
404 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
406 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
415 sym_add_change_count(conf_warnings || conf_unsaved);
420 /* Write a S_STRING */
421 static void conf_write_string(bool headerfile, const char *name,
422 const char *str, FILE *out)
426 fprintf(out, "#define %s%s \"", CONFIG_, name);
428 fprintf(out, "%s%s=\"", CONFIG_, name);
431 l = strcspn(str, "\"\\");
433 xfwrite(str, l, 1, out);
438 fprintf(out, "\\%c", *str++);
443 static void conf_write_symbol(struct symbol *sym, FILE *out, bool write_no)
450 switch (sym_get_tristate_value(sym)) {
453 fprintf(out, "# %s%s is not set\n",
457 fprintf(out, "%s%s=m\n", CONFIG_, sym->name);
460 fprintf(out, "%s%s=y\n", CONFIG_, sym->name);
465 conf_write_string(false, sym->name, sym_get_string_value(sym), out);
469 str = sym_get_string_value(sym);
470 fprintf(out, "%s%s=%s\n", CONFIG_, sym->name, str);
479 * Write out a minimal config.
480 * All values that has default values are skipped as this is redundant.
482 int conf_write_defconfig(const char *filename)
488 out = fopen(filename, "w");
492 sym_clear_all_valid();
494 /* Traverse all menus to find all relevant symbols */
495 menu = rootmenu.list;
501 if (!menu_is_visible(menu))
503 } else if (!sym_is_choice(sym)) {
505 if (!(sym->flags & SYMBOL_WRITE))
507 sym->flags &= ~SYMBOL_WRITE;
508 /* If we cannot change the symbol - skip */
509 if (!sym_is_changable(sym))
511 /* If symbol equals to default value - skip */
512 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
516 * If symbol is a choice value and equals to the
517 * default for a choice - skip.
518 * But only if value is bool and equal to "y" and
519 * choice is not "optional".
520 * (If choice is "optional" then all values can be "n")
522 if (sym_is_choice_value(sym)) {
526 cs = prop_get_symbol(sym_get_choice_prop(sym));
527 ds = sym_choice_default(cs);
528 if (!sym_is_optional(cs) && sym == ds) {
529 if ((sym->type == S_BOOLEAN) &&
530 sym_get_tristate_value(sym) == yes)
534 conf_write_symbol(sym, out, true);
537 if (menu->list != NULL) {
540 else if (menu->next != NULL) {
543 while ((menu = menu->parent)) {
544 if (menu->next != NULL) {
555 int conf_write(const char *name)
560 const char *basename;
562 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
566 if (name && name[0]) {
570 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
571 strcpy(dirname, name);
572 strcat(dirname, "/");
573 basename = conf_get_configname();
574 } else if ((slash = strrchr(name, '/'))) {
575 int size = slash - name + 1;
576 memcpy(dirname, name, size);
579 basename = slash + 1;
581 basename = conf_get_configname();
585 basename = conf_get_configname();
587 sprintf(newname, "%s%s", dirname, basename);
588 env = getenv("KCONFIG_OVERWRITECONFIG");
590 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
591 out = fopen(tmpname, "w");
594 out = fopen(newname, "w");
600 "# Automatically generated make config: don't edit\n"
603 rootmenu.prompt->text);
605 if (!conf_get_changed())
606 sym_clear_all_valid();
608 menu = rootmenu.list;
612 if (!menu_is_visible(menu))
614 str = menu_get_prompt(menu);
619 } else if (!(sym->flags & SYMBOL_CHOICE)) {
621 if (!(sym->flags & SYMBOL_WRITE))
623 sym->flags &= ~SYMBOL_WRITE;
624 /* Write config symbol to file */
625 conf_write_symbol(sym, out, true);
635 else while ((menu = menu->parent)) {
645 strcat(dirname, basename);
646 strcat(dirname, ".old");
647 rename(newname, dirname);
648 if (rename(tmpname, newname))
652 conf_message(_("configuration written to %s"), newname);
654 sym_set_change_count(0);
659 static int conf_split_config(void)
662 char path[PATH_MAX+1];
668 name = conf_get_autoconfig_name();
669 conf_read_simple(name, S_DEF_AUTO);
671 if (chdir("include/config"))
675 for_all_symbols(i, sym) {
677 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
679 if (sym->flags & SYMBOL_WRITE) {
680 if (sym->flags & SYMBOL_DEF_AUTO) {
682 * symbol has old and new value,
688 if (sym_get_tristate_value(sym) ==
689 sym->def[S_DEF_AUTO].tri)
695 if (!strcmp(sym_get_string_value(sym),
696 sym->def[S_DEF_AUTO].val))
704 * If there is no old value, only 'no' (unset)
705 * is allowed as new value.
710 if (sym_get_tristate_value(sym) == no)
717 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
718 /* There is neither an old nor a new value. */
721 * There is an old value, but no new value ('no' (unset)
722 * isn't saved in auto.conf, so the old value is always
723 * different from 'no').
726 /* Replace all '_' and append ".h" */
731 *d++ = (c == '_') ? '/' : c;
735 /* Assume directory path already exists. */
736 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
738 if (errno != ENOENT) {
743 * Create directory components,
744 * unless they exist already.
747 while ((d = strchr(d, '/'))) {
749 if (stat(path, &sb) && mkdir(path, 0755)) {
756 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
771 int conf_write_autoconf(void)
776 FILE *out, *tristate, *out_h;
779 sym_clear_all_valid();
781 file_write_dep("include/config/auto.conf.cmd");
783 if (conf_split_config())
786 out = fopen(".tmpconfig", "w");
790 tristate = fopen(".tmpconfig_tristate", "w");
796 out_h = fopen(".tmpconfig.h", "w");
804 "# Automatically generated make config: don't edit\n"
807 rootmenu.prompt->text);
808 fprintf(tristate, "#\n"
809 "# Automatically generated - do not edit\n"
811 fprintf(out_h, "/*\n"
812 " * Automatically generated C config: don't edit\n"
815 rootmenu.prompt->text);
817 for_all_symbols(i, sym) {
819 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
822 /* write symbol to config file */
823 conf_write_symbol(sym, out, false);
825 /* update autoconf and tristate files */
829 switch (sym_get_tristate_value(sym)) {
833 fprintf(tristate, "%s%s=M\n",
835 fprintf(out_h, "#define %s%s_MODULE 1\n",
839 if (sym->type == S_TRISTATE)
840 fprintf(tristate,"%s%s=Y\n",
842 fprintf(out_h, "#define %s%s 1\n",
848 conf_write_string(true, sym->name, sym_get_string_value(sym), out_h);
851 str = sym_get_string_value(sym);
852 if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
853 fprintf(out_h, "#define %s%s 0x%s\n",
854 CONFIG_, sym->name, str);
858 str = sym_get_string_value(sym);
859 fprintf(out_h, "#define %s%s %s\n",
860 CONFIG_, sym->name, str);
870 name = getenv("KCONFIG_AUTOHEADER");
872 name = "include/generated/autoconf.h";
873 if (rename(".tmpconfig.h", name))
875 name = getenv("KCONFIG_TRISTATE");
877 name = "include/config/tristate.conf";
878 if (rename(".tmpconfig_tristate", name))
880 name = conf_get_autoconfig_name();
882 * This must be the last step, kbuild has a dependency on auto.conf
883 * and this marks the successful completion of the previous steps.
885 if (rename(".tmpconfig", name))
891 static int sym_change_count;
892 static void (*conf_changed_callback)(void);
894 void sym_set_change_count(int count)
896 int _sym_change_count = sym_change_count;
897 sym_change_count = count;
898 if (conf_changed_callback &&
899 (bool)_sym_change_count != (bool)count)
900 conf_changed_callback();
903 void sym_add_change_count(int count)
905 sym_set_change_count(count + sym_change_count);
908 bool conf_get_changed(void)
910 return sym_change_count;
913 void conf_set_changed_callback(void (*fn)(void))
915 conf_changed_callback = fn;
918 static void randomize_choice_values(struct symbol *csym)
920 struct property *prop;
926 * If choice is mod then we may have more items selected
927 * and if no then no-one.
928 * In both cases stop.
930 if (csym->curr.tri != yes)
933 prop = sym_get_choice_prop(csym);
935 /* count entries in choice block */
937 expr_list_for_each_sym(prop->expr, e, sym)
941 * find a random value and set it to yes,
942 * set the rest to no so we have only one set
944 def = (rand() % cnt);
947 expr_list_for_each_sym(prop->expr, e, sym) {
949 sym->def[S_DEF_USER].tri = yes;
950 csym->def[S_DEF_USER].val = sym;
953 sym->def[S_DEF_USER].tri = no;
956 csym->flags |= SYMBOL_DEF_USER;
957 /* clear VALID to get value calculated */
958 csym->flags &= ~(SYMBOL_VALID);
961 static void set_all_choice_values(struct symbol *csym)
963 struct property *prop;
967 prop = sym_get_choice_prop(csym);
970 * Set all non-assinged choice values to no
972 expr_list_for_each_sym(prop->expr, e, sym) {
973 if (!sym_has_value(sym))
974 sym->def[S_DEF_USER].tri = no;
976 csym->flags |= SYMBOL_DEF_USER;
977 /* clear VALID to get value calculated */
978 csym->flags &= ~(SYMBOL_VALID);
981 void conf_set_all_new_symbols(enum conf_def_mode mode)
983 struct symbol *sym, *csym;
986 for_all_symbols(i, sym) {
987 if (sym_has_value(sym))
989 switch (sym_get_type(sym)) {
994 sym->def[S_DEF_USER].tri = yes;
997 sym->def[S_DEF_USER].tri = mod;
1000 sym->def[S_DEF_USER].tri = no;
1003 cnt = sym_get_type(sym) == S_TRISTATE ? 3 : 2;
1004 sym->def[S_DEF_USER].tri = (tristate)(rand() % cnt);
1009 if (!(sym_is_choice(sym) && mode == def_random))
1010 sym->flags |= SYMBOL_DEF_USER;
1018 sym_clear_all_valid();
1021 * We have different type of choice blocks.
1022 * If curr.tri equals to mod then we can select several
1023 * choice symbols in one block.
1024 * In this case we do nothing.
1025 * If curr.tri equals yes then only one symbol can be
1026 * selected in a choice block and we set it to yes,
1027 * and the rest to no.
1029 for_all_symbols(i, csym) {
1030 if (sym_has_value(csym) || !sym_is_choice(csym))
1033 sym_calc_value(csym);
1034 if (mode == def_random)
1035 randomize_choice_values(csym);
1037 set_all_choice_values(csym);