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 #define LINE_GROWTH 16
186 static int add_byte(int c, char **lineptr, size_t slen, size_t *n)
189 size_t new_size = slen + 1;
191 new_size += LINE_GROWTH - 1;
193 nline = realloc(*lineptr, new_size);
201 (*lineptr)[slen] = c;
206 static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream)
208 char *line = *lineptr;
212 int c = getc(stream);
216 if (add_byte(c, &line, slen, n) < 0)
221 if (add_byte('\0', &line, slen, n) < 0)
228 if (add_byte(c, &line, slen, n) < 0)
240 int conf_read_simple(const char *name, int def)
244 size_t line_asize = 0;
250 in = zconf_fopen(name);
252 struct property *prop;
254 name = conf_get_configname();
255 in = zconf_fopen(name);
258 sym_add_change_count(1);
259 if (!sym_defconfig_list) {
261 sym_calc_value(modules_sym);
265 for_all_defaults(sym_defconfig_list, prop) {
266 if (expr_calc_value(prop->visible.expr) == no ||
267 prop->expr->type != E_SYMBOL)
269 name = conf_expand_value(prop->expr->left.sym->name);
270 in = zconf_fopen(name);
272 conf_message(_("using defaults found in %s"),
282 conf_filename = name;
287 def_flags = SYMBOL_DEF << def;
288 for_all_symbols(i, sym) {
289 sym->flags |= SYMBOL_CHANGED;
290 sym->flags &= ~(def_flags|SYMBOL_VALID);
295 if (sym->def[def].val)
296 free(sym->def[def].val);
299 sym->def[def].val = NULL;
300 sym->def[def].tri = no;
304 while (compat_getline(&line, &line_asize, in) != -1) {
307 if (line[0] == '#') {
308 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
310 p = strchr(line + 2 + strlen(CONFIG_), ' ');
314 if (strncmp(p, "is not set", 10))
316 if (def == S_DEF_USER) {
317 sym = sym_find(line + 2 + strlen(CONFIG_));
319 sym_add_change_count(1);
323 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
324 if (sym->type == S_UNKNOWN)
325 sym->type = S_BOOLEAN;
327 if (sym->flags & def_flags) {
328 conf_warning("override: reassigning to symbol %s", sym->name);
333 sym->def[def].tri = no;
334 sym->flags |= def_flags;
339 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
340 p = strchr(line + strlen(CONFIG_), '=');
344 p2 = strchr(p, '\n');
350 if (def == S_DEF_USER) {
351 sym = sym_find(line + strlen(CONFIG_));
353 sym_add_change_count(1);
357 sym = sym_lookup(line + strlen(CONFIG_), 0);
358 if (sym->type == S_UNKNOWN)
361 if (sym->flags & def_flags) {
362 conf_warning("override: reassigning to symbol %s", sym->name);
364 if (conf_set_sym_val(sym, def, def_flags, p))
367 if (line[0] != '\r' && line[0] != '\n')
368 conf_warning("unexpected data");
372 if (sym && sym_is_choice_value(sym)) {
373 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
374 switch (sym->def[def].tri) {
378 if (cs->def[def].tri == yes) {
379 conf_warning("%s creates inconsistent choice state", sym->name);
383 if (cs->def[def].tri != no)
384 conf_warning("override: %s changes choice state", sym->name);
385 cs->def[def].val = sym;
386 cs->flags |= def_flags;
389 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
396 sym_calc_value(modules_sym);
400 int conf_read(const char *name)
405 sym_set_change_count(0);
407 if (conf_read_simple(name, S_DEF_USER))
410 for_all_symbols(i, sym) {
412 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
414 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
415 /* check that calculated value agrees with saved value */
419 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
421 if (!sym_is_choice(sym))
425 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
429 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
430 /* no previous value and not saved */
433 /* maybe print value in verbose mode... */
436 for_all_symbols(i, sym) {
437 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
438 /* Reset values of generates values, so they'll appear
439 * as new, if they should become visible, but that
440 * doesn't quite work if the Kconfig and the saved
441 * configuration disagree.
443 if (sym->visible == no && !conf_unsaved)
444 sym->flags &= ~SYMBOL_DEF_USER;
449 /* Reset a string value if it's out of range */
450 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
452 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
461 sym_add_change_count(conf_warnings || conf_unsaved);
467 * Kconfig configuration printer
469 * This printer is used when generating the resulting configuration after
470 * kconfig invocation and `defconfig' files. Unset symbol might be omitted by
471 * passing a non-NULL argument to the printer.
475 kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
482 bool skip_unset = (arg != NULL);
485 fprintf(fp, "# %s%s is not set\n",
494 fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
498 kconfig_print_cmake_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
505 bool skip_unset = (arg != NULL);
508 fprintf(fp, "set(%s%s false)\n",
509 CONFIG_, sym->name, value);
511 } else if (*value == 'm') {
514 fprintf(fp, "set(%s%s true)\n", CONFIG_, sym->name, value);
518 const char *prefix = "";
520 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
522 fprintf(fp, "set(%s%s %s%s)\n",
523 CONFIG_, sym->name, prefix, value);
528 fprintf(fp, "set(%s%s %s)\n",
529 CONFIG_, sym->name, value);
538 kconfig_print_comment(FILE *fp, const char *value, void *arg)
540 const char *p = value;
544 l = strcspn(p, "\n");
548 xfwrite(p, l, 1, fp);
557 static struct conf_printer kconfig_printer_cb =
559 .print_symbol = kconfig_print_symbol,
560 .print_comment = kconfig_print_comment,
563 static struct conf_printer kconfig_printer_cmake_cb =
565 .print_symbol = kconfig_print_cmake_symbol,
566 .print_comment = kconfig_print_comment,
572 * This printer is used when generating the `include/generated/autoconf.h' file.
575 header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
581 const char *suffix = "";
590 fprintf(fp, "#define %s%s%s 1\n",
591 CONFIG_, sym->name, suffix);
596 const char *prefix = "";
598 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
600 fprintf(fp, "#define %s%s %s%s\n",
601 CONFIG_, sym->name, prefix, value);
606 fprintf(fp, "#define %s%s %s\n",
607 CONFIG_, sym->name, value);
616 header_print_comment(FILE *fp, const char *value, void *arg)
618 const char *p = value;
623 l = strcspn(p, "\n");
627 xfwrite(p, l, 1, fp);
634 fprintf(fp, " */\n");
637 static struct conf_printer header_printer_cb =
639 .print_symbol = header_print_symbol,
640 .print_comment = header_print_comment,
646 * This printer is used when generating the `include/generated/tristate.conf' file.
649 tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
652 if (sym->type == S_TRISTATE && *value != 'n')
653 fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
656 static struct conf_printer tristate_printer_cb =
658 .print_symbol = tristate_print_symbol,
659 .print_comment = kconfig_print_comment,
662 static void conf_write_symbol(FILE *fp, struct symbol *sym,
663 struct conf_printer *printer, void *printer_arg)
672 str = sym_get_string_value(sym);
673 str = sym_escape_string_value(str);
674 printer->print_symbol(fp, sym, str, printer_arg);
678 str = sym_get_string_value(sym);
679 printer->print_symbol(fp, sym, str, printer_arg);
684 conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
688 snprintf(buf, sizeof(buf),
690 "Automatically generated file; DO NOT EDIT.\n"
692 rootmenu.prompt->text);
694 printer->print_comment(fp, buf, printer_arg);
698 * Write out a minimal config.
699 * All values that has default values are skipped as this is redundant.
701 int conf_write_defconfig(const char *filename)
707 out = fopen(filename, "w");
711 sym_clear_all_valid();
713 /* Traverse all menus to find all relevant symbols */
714 menu = rootmenu.list;
720 if (!menu_is_visible(menu))
722 } else if (!sym_is_choice(sym)) {
724 if (!(sym->flags & SYMBOL_WRITE))
726 sym->flags &= ~SYMBOL_WRITE;
727 /* If we cannot change the symbol - skip */
728 if (!sym_is_changable(sym))
730 /* If symbol equals to default value - skip */
731 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
735 * If symbol is a choice value and equals to the
736 * default for a choice - skip.
737 * But only if value is bool and equal to "y" and
738 * choice is not "optional".
739 * (If choice is "optional" then all values can be "n")
741 if (sym_is_choice_value(sym)) {
745 cs = prop_get_symbol(sym_get_choice_prop(sym));
746 ds = sym_choice_default(cs);
747 if (!sym_is_optional(cs) && sym == ds) {
748 if ((sym->type == S_BOOLEAN) &&
749 sym_get_tristate_value(sym) == yes)
753 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
756 if (menu->list != NULL) {
759 else if (menu->next != NULL) {
762 while ((menu = menu->parent)) {
763 if (menu->next != NULL) {
774 int conf_write(const char *name)
779 const char *basename;
781 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
785 if (name && name[0]) {
789 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
790 strcpy(dirname, name);
791 strcat(dirname, "/");
792 basename = conf_get_configname();
793 } else if ((slash = strrchr(name, '/'))) {
794 int size = slash - name + 1;
795 memcpy(dirname, name, size);
798 basename = slash + 1;
800 basename = conf_get_configname();
804 basename = conf_get_configname();
806 sprintf(newname, "%s%s", dirname, basename);
807 env = getenv("KCONFIG_OVERWRITECONFIG");
809 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
810 out = fopen(tmpname, "w");
813 out = fopen(newname, "w");
818 conf_write_heading(out, &kconfig_printer_cb, NULL);
820 if (!conf_get_changed())
821 sym_clear_all_valid();
823 menu = rootmenu.list;
827 if (!menu_is_visible(menu))
829 str = menu_get_prompt(menu);
834 } else if (!(sym->flags & SYMBOL_CHOICE)) {
836 if (!(sym->flags & SYMBOL_WRITE))
838 if (sym_is_choice_value(sym) && !menu_is_visible(menu->parent))
840 sym->flags &= ~SYMBOL_WRITE;
842 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
852 else while ((menu = menu->parent)) {
862 strcat(dirname, basename);
863 strcat(dirname, ".old");
864 rename(newname, dirname);
865 if (rename(tmpname, newname))
869 conf_message(_("configuration written to %s"), newname);
871 sym_set_change_count(0);
876 static int conf_split_config(void)
879 char path[PATH_MAX+1];
885 name = conf_get_autoconfig_name();
886 conf_read_simple(name, S_DEF_AUTO);
888 if (chdir("include/generated"))
892 for_all_symbols(i, sym) {
894 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
896 if (sym->flags & SYMBOL_WRITE) {
897 if (sym->flags & SYMBOL_DEF_AUTO) {
899 * symbol has old and new value,
905 if (sym_get_tristate_value(sym) ==
906 sym->def[S_DEF_AUTO].tri)
912 if (!strcmp(sym_get_string_value(sym),
913 sym->def[S_DEF_AUTO].val))
921 * If there is no old value, only 'no' (unset)
922 * is allowed as new value.
927 if (sym_get_tristate_value(sym) == no)
934 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
935 /* There is neither an old nor a new value. */
938 * There is an old value, but no new value ('no' (unset)
939 * isn't saved in auto.conf, so the old value is always
940 * different from 'no').
943 /* Replace all '_' and append ".h" */
948 *d++ = (c == '_') ? '/' : c;
952 /* Assume directory path already exists. */
953 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
955 if (errno != ENOENT) {
960 * Create directory components,
961 * unless they exist already.
964 while ((d = strchr(d, '/'))) {
966 if (stat(path, &sb) && mkdir(path, 0755)) {
973 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
988 int conf_write_autoconf(void)
992 FILE *out, *tristate, *out_h, *out_c;
995 sym_clear_all_valid();
997 file_write_dep("include/generated/auto.conf.cmd");
999 if (conf_split_config())
1002 out = fopen(".tmpconfig", "w");
1006 tristate = fopen(".tmpconfig_tristate", "w");
1012 out_h = fopen(".tmpconfig.h", "w");
1019 out_c = fopen(".tmpconfig.cmake", "w");
1026 conf_write_heading(out, &kconfig_printer_cb, NULL);
1028 conf_write_heading(tristate, &tristate_printer_cb, NULL);
1030 conf_write_heading(out_h, &header_printer_cb, NULL);
1032 conf_write_heading(out_c, &kconfig_printer_cmake_cb, NULL);
1034 for_all_symbols(i, sym) {
1035 sym_calc_value(sym);
1036 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
1039 /* write symbol to auto.conf, tristate and header files */
1040 conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
1042 conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);
1044 conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
1046 conf_write_symbol(out_c, sym, &kconfig_printer_cmake_cb, NULL);
1053 name = getenv("KCONFIG_AUTOHEADER");
1055 name = "include/generated/autoconf.h";
1056 if (rename(".tmpconfig.h", name))
1058 name = getenv("KCONFIG_TRISTATE");
1060 name = "include/generated/tristate.conf";
1061 if (rename(".tmpconfig_tristate", name))
1063 name = getenv("KCONFIG_CMAKE");
1065 name = "config.cmake";
1066 if (rename(".tmpconfig.cmake", name))
1068 name = conf_get_autoconfig_name();
1070 * This must be the last step, kbuild has a dependency on auto.conf
1071 * and this marks the successful completion of the previous steps.
1073 if (rename(".tmpconfig", name))
1079 static int sym_change_count;
1080 static void (*conf_changed_callback)(void);
1082 void sym_set_change_count(int count)
1084 int _sym_change_count = sym_change_count;
1085 sym_change_count = count;
1086 if (conf_changed_callback &&
1087 (bool)_sym_change_count != (bool)count)
1088 conf_changed_callback();
1091 void sym_add_change_count(int count)
1093 sym_set_change_count(count + sym_change_count);
1096 bool conf_get_changed(void)
1098 return sym_change_count;
1101 void conf_set_changed_callback(void (*fn)(void))
1103 conf_changed_callback = fn;
1106 static void randomize_choice_values(struct symbol *csym)
1108 struct property *prop;
1114 * If choice is mod then we may have more items selected
1115 * and if no then no-one.
1116 * In both cases stop.
1118 if (csym->curr.tri != yes)
1121 prop = sym_get_choice_prop(csym);
1123 /* count entries in choice block */
1125 expr_list_for_each_sym(prop->expr, e, sym)
1129 * find a random value and set it to yes,
1130 * set the rest to no so we have only one set
1132 def = (rand() % cnt);
1135 expr_list_for_each_sym(prop->expr, e, sym) {
1137 sym->def[S_DEF_USER].tri = yes;
1138 csym->def[S_DEF_USER].val = sym;
1141 sym->def[S_DEF_USER].tri = no;
1143 sym->flags &= ~(SYMBOL_VALID);
1145 csym->flags |= SYMBOL_DEF_USER;
1146 /* clear VALID to get value calculated */
1147 csym->flags &= ~(SYMBOL_VALID);
1150 static void set_all_choice_values(struct symbol *csym)
1152 struct property *prop;
1156 prop = sym_get_choice_prop(csym);
1159 * Set all non-assinged choice values to no
1161 expr_list_for_each_sym(prop->expr, e, sym) {
1162 if (!sym_has_value(sym))
1163 sym->def[S_DEF_USER].tri = no;
1165 csym->flags |= SYMBOL_DEF_USER;
1166 /* clear VALID to get value calculated */
1167 csym->flags &= ~(SYMBOL_VALID);
1170 void conf_set_all_new_symbols(enum conf_def_mode mode)
1172 struct symbol *sym, *csym;
1175 for_all_symbols(i, sym) {
1176 if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID))
1178 switch (sym_get_type(sym)) {
1183 sym->def[S_DEF_USER].tri = yes;
1186 sym->def[S_DEF_USER].tri = mod;
1189 sym->def[S_DEF_USER].tri = no;
1192 cnt = sym->type == S_TRISTATE ? 3 : 2;
1193 sym->def[S_DEF_USER].tri = (tristate)(rand() % cnt);
1198 if (!(sym_is_choice(sym) && mode == def_random))
1199 sym->flags |= SYMBOL_DEF_USER;
1207 sym_clear_all_valid();
1210 * We have different type of choice blocks.
1211 * If curr.tri equals to mod then we can select several
1212 * choice symbols in one block.
1213 * In this case we do nothing.
1214 * If curr.tri equals yes then only one symbol can be
1215 * selected in a choice block and we set it to yes,
1216 * and the rest to no.
1218 for_all_symbols(i, csym) {
1219 if (sym_has_value(csym) || !sym_is_choice(csym))
1222 sym_calc_value(csym);
1223 if (mode == def_random)
1224 randomize_choice_values(csym);
1226 set_all_choice_values(csym);