2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
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[] = "include/generated/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/generated/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)
350 sym_set_change_count(0);
352 if (conf_read_simple(name, S_DEF_USER))
355 for_all_symbols(i, sym) {
357 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
359 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
360 /* check that calculated value agrees with saved value */
364 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
366 if (!sym_is_choice(sym))
370 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
374 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
375 /* no previous value and not saved */
378 /* maybe print value in verbose mode... */
381 for_all_symbols(i, sym) {
382 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
383 /* Reset values of generates values, so they'll appear
384 * as new, if they should become visible, but that
385 * doesn't quite work if the Kconfig and the saved
386 * configuration disagree.
388 if (sym->visible == no && !conf_unsaved)
389 sym->flags &= ~SYMBOL_DEF_USER;
394 /* Reset a string value if it's out of range */
395 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
397 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
406 sym_add_change_count(conf_warnings || conf_unsaved);
412 * Kconfig configuration printer
414 * This printer is used when generating the resulting configuration after
415 * kconfig invocation and `defconfig' files. Unset symbol might be omitted by
416 * passing a non-NULL argument to the printer.
420 kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
427 bool skip_unset = (arg != NULL);
430 fprintf(fp, "# %s%s is not set\n",
439 fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
443 kconfig_print_cmake_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
450 bool skip_unset = (arg != NULL);
453 fprintf(fp, "set(%s%s false)\n",
454 CONFIG_, sym->name, value);
456 } else if (*value == 'm') {
459 fprintf(fp, "set(%s%s true)\n", CONFIG_, sym->name, value);
463 const char *prefix = "";
465 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
467 fprintf(fp, "set(%s%s %s%s)\n",
468 CONFIG_, sym->name, prefix, value);
473 fprintf(fp, "set(%s%s %s)\n",
474 CONFIG_, sym->name, value);
483 kconfig_print_comment(FILE *fp, const char *value, void *arg)
485 const char *p = value;
489 l = strcspn(p, "\n");
493 xfwrite(p, l, 1, fp);
502 static struct conf_printer kconfig_printer_cb =
504 .print_symbol = kconfig_print_symbol,
505 .print_comment = kconfig_print_comment,
508 static struct conf_printer kconfig_printer_cmake_cb =
510 .print_symbol = kconfig_print_cmake_symbol,
511 .print_comment = kconfig_print_comment,
517 * This printer is used when generating the `include/generated/autoconf.h' file.
520 header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
526 const char *suffix = "";
535 fprintf(fp, "#define %s%s%s 1\n",
536 CONFIG_, sym->name, suffix);
541 const char *prefix = "";
543 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
545 fprintf(fp, "#define %s%s %s%s\n",
546 CONFIG_, sym->name, prefix, value);
551 fprintf(fp, "#define %s%s %s\n",
552 CONFIG_, sym->name, value);
561 header_print_comment(FILE *fp, const char *value, void *arg)
563 const char *p = value;
568 l = strcspn(p, "\n");
572 xfwrite(p, l, 1, fp);
579 fprintf(fp, " */\n");
582 static struct conf_printer header_printer_cb =
584 .print_symbol = header_print_symbol,
585 .print_comment = header_print_comment,
591 * This printer is used when generating the `include/generated/tristate.conf' file.
594 tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
597 if (sym->type == S_TRISTATE && *value != 'n')
598 fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
601 static struct conf_printer tristate_printer_cb =
603 .print_symbol = tristate_print_symbol,
604 .print_comment = kconfig_print_comment,
607 static void conf_write_symbol(FILE *fp, struct symbol *sym,
608 struct conf_printer *printer, void *printer_arg)
617 str = sym_get_string_value(sym);
618 str = sym_escape_string_value(str);
619 printer->print_symbol(fp, sym, str, printer_arg);
623 str = sym_get_string_value(sym);
624 printer->print_symbol(fp, sym, str, printer_arg);
629 conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
633 snprintf(buf, sizeof(buf),
635 "Automatically generated file; DO NOT EDIT.\n"
637 rootmenu.prompt->text);
639 printer->print_comment(fp, buf, printer_arg);
643 * Write out a minimal config.
644 * All values that has default values are skipped as this is redundant.
646 int conf_write_defconfig(const char *filename)
652 out = fopen(filename, "w");
656 sym_clear_all_valid();
658 /* Traverse all menus to find all relevant symbols */
659 menu = rootmenu.list;
665 if (!menu_is_visible(menu))
667 } else if (!sym_is_choice(sym)) {
669 if (!(sym->flags & SYMBOL_WRITE))
671 sym->flags &= ~SYMBOL_WRITE;
672 /* If we cannot change the symbol - skip */
673 if (!sym_is_changable(sym))
675 /* If symbol equals to default value - skip */
676 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
680 * If symbol is a choice value and equals to the
681 * default for a choice - skip.
682 * But only if value is bool and equal to "y" and
683 * choice is not "optional".
684 * (If choice is "optional" then all values can be "n")
686 if (sym_is_choice_value(sym)) {
690 cs = prop_get_symbol(sym_get_choice_prop(sym));
691 ds = sym_choice_default(cs);
692 if (!sym_is_optional(cs) && sym == ds) {
693 if ((sym->type == S_BOOLEAN) &&
694 sym_get_tristate_value(sym) == yes)
698 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
701 if (menu->list != NULL) {
704 else if (menu->next != NULL) {
707 while ((menu = menu->parent)) {
708 if (menu->next != NULL) {
719 int conf_write(const char *name)
724 const char *basename;
726 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
730 if (name && name[0]) {
734 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
735 strcpy(dirname, name);
736 strcat(dirname, "/");
737 basename = conf_get_configname();
738 } else if ((slash = strrchr(name, '/'))) {
739 int size = slash - name + 1;
740 memcpy(dirname, name, size);
743 basename = slash + 1;
745 basename = conf_get_configname();
749 basename = conf_get_configname();
751 sprintf(newname, "%s%s", dirname, basename);
752 env = getenv("KCONFIG_OVERWRITECONFIG");
754 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
755 out = fopen(tmpname, "w");
758 out = fopen(newname, "w");
763 conf_write_heading(out, &kconfig_printer_cb, NULL);
765 if (!conf_get_changed())
766 sym_clear_all_valid();
768 menu = rootmenu.list;
772 if (!menu_is_visible(menu))
774 str = menu_get_prompt(menu);
779 } else if (!(sym->flags & SYMBOL_CHOICE)) {
781 if (!(sym->flags & SYMBOL_WRITE))
783 sym->flags &= ~SYMBOL_WRITE;
785 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
795 else while ((menu = menu->parent)) {
805 strcat(dirname, basename);
806 strcat(dirname, ".old");
807 rename(newname, dirname);
808 if (rename(tmpname, newname))
812 conf_message(_("configuration written to %s"), newname);
814 sym_set_change_count(0);
819 static int conf_split_config(void)
822 char path[PATH_MAX+1];
828 name = conf_get_autoconfig_name();
829 conf_read_simple(name, S_DEF_AUTO);
831 if (chdir("include/generated"))
835 for_all_symbols(i, sym) {
837 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
839 if (sym->flags & SYMBOL_WRITE) {
840 if (sym->flags & SYMBOL_DEF_AUTO) {
842 * symbol has old and new value,
848 if (sym_get_tristate_value(sym) ==
849 sym->def[S_DEF_AUTO].tri)
855 if (!strcmp(sym_get_string_value(sym),
856 sym->def[S_DEF_AUTO].val))
864 * If there is no old value, only 'no' (unset)
865 * is allowed as new value.
870 if (sym_get_tristate_value(sym) == no)
877 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
878 /* There is neither an old nor a new value. */
881 * There is an old value, but no new value ('no' (unset)
882 * isn't saved in auto.conf, so the old value is always
883 * different from 'no').
886 /* Replace all '_' and append ".h" */
891 *d++ = (c == '_') ? '/' : c;
895 /* Assume directory path already exists. */
896 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
898 if (errno != ENOENT) {
903 * Create directory components,
904 * unless they exist already.
907 while ((d = strchr(d, '/'))) {
909 if (stat(path, &sb) && mkdir(path, 0755)) {
916 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
931 int conf_write_autoconf(void)
935 FILE *out, *tristate, *out_h, *out_c;
938 sym_clear_all_valid();
940 file_write_dep("include/generated/auto.conf.cmd");
942 if (conf_split_config())
945 out = fopen(".tmpconfig", "w");
949 tristate = fopen(".tmpconfig_tristate", "w");
955 out_h = fopen(".tmpconfig.h", "w");
962 out_c = fopen(".tmpconfig.cmake", "w");
969 conf_write_heading(out, &kconfig_printer_cb, NULL);
971 conf_write_heading(tristate, &tristate_printer_cb, NULL);
973 conf_write_heading(out_h, &header_printer_cb, NULL);
975 conf_write_heading(out_c, &kconfig_printer_cmake_cb, NULL);
977 for_all_symbols(i, sym) {
979 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
982 /* write symbol to auto.conf, tristate and header files */
983 conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
985 conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);
987 conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
989 conf_write_symbol(out_c, sym, &kconfig_printer_cmake_cb, NULL);
996 name = getenv("KCONFIG_AUTOHEADER");
998 name = "include/generated/autoconf.h";
999 if (rename(".tmpconfig.h", name))
1001 name = getenv("KCONFIG_TRISTATE");
1003 name = "include/generated/tristate.conf";
1004 if (rename(".tmpconfig_tristate", name))
1006 name = getenv("KCONFIG_CMAKE");
1008 name = "config.cmake";
1009 if (rename(".tmpconfig.cmake", name))
1011 name = conf_get_autoconfig_name();
1013 * This must be the last step, kbuild has a dependency on auto.conf
1014 * and this marks the successful completion of the previous steps.
1016 if (rename(".tmpconfig", name))
1022 static int sym_change_count;
1023 static void (*conf_changed_callback)(void);
1025 void sym_set_change_count(int count)
1027 int _sym_change_count = sym_change_count;
1028 sym_change_count = count;
1029 if (conf_changed_callback &&
1030 (bool)_sym_change_count != (bool)count)
1031 conf_changed_callback();
1034 void sym_add_change_count(int count)
1036 sym_set_change_count(count + sym_change_count);
1039 bool conf_get_changed(void)
1041 return sym_change_count;
1044 void conf_set_changed_callback(void (*fn)(void))
1046 conf_changed_callback = fn;
1049 static void randomize_choice_values(struct symbol *csym)
1051 struct property *prop;
1057 * If choice is mod then we may have more items selected
1058 * and if no then no-one.
1059 * In both cases stop.
1061 if (csym->curr.tri != yes)
1064 prop = sym_get_choice_prop(csym);
1066 /* count entries in choice block */
1068 expr_list_for_each_sym(prop->expr, e, sym)
1072 * find a random value and set it to yes,
1073 * set the rest to no so we have only one set
1075 def = (rand() % cnt);
1078 expr_list_for_each_sym(prop->expr, e, sym) {
1080 sym->def[S_DEF_USER].tri = yes;
1081 csym->def[S_DEF_USER].val = sym;
1084 sym->def[S_DEF_USER].tri = no;
1087 csym->flags |= SYMBOL_DEF_USER;
1088 /* clear VALID to get value calculated */
1089 csym->flags &= ~(SYMBOL_VALID);
1092 static void set_all_choice_values(struct symbol *csym)
1094 struct property *prop;
1098 prop = sym_get_choice_prop(csym);
1101 * Set all non-assinged choice values to no
1103 expr_list_for_each_sym(prop->expr, e, sym) {
1104 if (!sym_has_value(sym))
1105 sym->def[S_DEF_USER].tri = no;
1107 csym->flags |= SYMBOL_DEF_USER;
1108 /* clear VALID to get value calculated */
1109 csym->flags &= ~(SYMBOL_VALID);
1112 void conf_set_all_new_symbols(enum conf_def_mode mode)
1114 struct symbol *sym, *csym;
1117 for_all_symbols(i, sym) {
1118 if (sym_has_value(sym))
1120 switch (sym_get_type(sym)) {
1125 sym->def[S_DEF_USER].tri = yes;
1128 sym->def[S_DEF_USER].tri = mod;
1131 sym->def[S_DEF_USER].tri = no;
1134 cnt = sym_get_type(sym) == S_TRISTATE ? 3 : 2;
1135 sym->def[S_DEF_USER].tri = (tristate)(rand() % cnt);
1140 if (!(sym_is_choice(sym) && mode == def_random))
1141 sym->flags |= SYMBOL_DEF_USER;
1149 sym_clear_all_valid();
1152 * We have different type of choice blocks.
1153 * If curr.tri equals to mod then we can select several
1154 * choice symbols in one block.
1155 * In this case we do nothing.
1156 * If curr.tri equals yes then only one symbol can be
1157 * selected in a choice block and we set it to yes,
1158 * and the rest to no.
1160 for_all_symbols(i, csym) {
1161 if (sym_has_value(csym) || !sym_is_choice(csym))
1164 sym_calc_value(csym);
1165 if (mode == def_random)
1166 randomize_choice_values(csym);
1168 set_all_choice_values(csym);