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[] = "arch/$ARCH/defconfig";
29 static char* autoconfig_name= "autoconf.h";
31 static void conf_warning(const char *fmt, ...)
35 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
36 vfprintf(stderr, fmt, ap);
37 fprintf(stderr, "\n");
42 static void conf_default_message_callback(const char *fmt, va_list ap)
49 static void (*conf_message_callback) (const char *fmt, va_list ap) =
50 conf_default_message_callback;
51 void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap))
53 conf_message_callback = fn;
56 static void conf_message(const char *fmt, ...)
61 if (conf_message_callback)
62 conf_message_callback(fmt, ap);
65 const char *conf_get_configname(void)
67 char *name = getenv("KCONFIG_CONFIG");
69 return name ? name : ".config";
72 const char *conf_get_autoconfig_name(void)
74 // char *name = getenv("KCONFIG_AUTOCONFIG");
76 // return name ? name : "include/config/auto.conf";
77 return autoconfig_name;
80 static char *conf_expand_value(const char *in)
84 static char res_value[SYMBOL_MAXLENGTH];
85 char *dst, name[SYMBOL_MAXLENGTH];
89 while ((src = strchr(in, '$'))) {
90 strncat(res_value, in, src - in);
93 while (isalnum(*src) || *src == '_')
96 sym = sym_lookup(name, 0);
98 strcat(res_value, sym_get_string_value(sym));
101 strcat(res_value, in);
106 char *conf_get_default_confname(void)
109 static char fullname[PATH_MAX+1];
112 name = conf_expand_value(conf_defname);
113 env = getenv(SRCTREE);
115 sprintf(fullname, "%s/%s", env, name);
116 if (!stat(fullname, &buf))
122 static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
129 sym->def[def].tri = mod;
130 sym->flags |= def_flags;
136 sym->def[def].tri = yes;
137 sym->flags |= def_flags;
141 sym->def[def].tri = no;
142 sym->flags |= def_flags;
145 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
149 for (p2 = p; *p2 && !isspace(*p2); p2++)
151 sym->type = S_STRING;
158 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
163 memmove(p2, p2 + 1, strlen(p2));
166 conf_warning("invalid string found");
173 if (sym_string_valid(sym, p)) {
174 sym->def[def].val = strdup(p);
175 sym->flags |= def_flags;
177 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
187 #define LINE_GROWTH 16
188 static int add_byte(int c, char **lineptr, size_t slen, size_t *n)
191 size_t new_size = slen + 1;
193 new_size += LINE_GROWTH - 1;
195 nline = realloc(*lineptr, new_size);
203 (*lineptr)[slen] = c;
208 static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream)
210 char *line = *lineptr;
214 int c = getc(stream);
218 if (add_byte(c, &line, slen, n) < 0)
223 if (add_byte('\0', &line, slen, n) < 0)
230 if (add_byte(c, &line, slen, n) < 0)
242 int conf_read_simple(const char *name, int def)
246 size_t line_asize = 0;
252 in = zconf_fopen(name);
254 struct property *prop;
256 name = conf_get_configname();
257 in = zconf_fopen(name);
260 sym_add_change_count(1);
261 if (!sym_defconfig_list) {
263 sym_calc_value(modules_sym);
267 for_all_defaults(sym_defconfig_list, prop) {
268 if (expr_calc_value(prop->visible.expr) == no ||
269 prop->expr->type != E_SYMBOL)
271 name = conf_expand_value(prop->expr->left.sym->name);
272 in = zconf_fopen(name);
274 conf_message(_("using defaults found in %s"),
284 conf_filename = name;
289 def_flags = SYMBOL_DEF << def;
290 for_all_symbols(i, sym) {
291 sym->flags |= SYMBOL_CHANGED;
292 sym->flags &= ~(def_flags|SYMBOL_VALID);
293 if (sym_is_choice(sym))
294 sym->flags |= def_flags;
299 if (sym->def[def].val)
300 free(sym->def[def].val);
303 sym->def[def].val = NULL;
304 sym->def[def].tri = no;
308 while (compat_getline(&line, &line_asize, in) != -1) {
311 if (line[0] == '#') {
312 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
314 p = strchr(line + 2 + strlen(CONFIG_), ' ');
318 if (strncmp(p, "is not set", 10))
320 if (def == S_DEF_USER) {
321 sym = sym_find(line + 2 + strlen(CONFIG_));
323 sym_add_change_count(1);
327 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
328 if (sym->type == S_UNKNOWN)
329 sym->type = S_BOOLEAN;
331 if (sym->flags & def_flags) {
332 conf_warning("override: reassigning to symbol %s", sym->name);
337 sym->def[def].tri = no;
338 sym->flags |= def_flags;
343 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
344 p = strchr(line + strlen(CONFIG_), '=');
348 p2 = strchr(p, '\n');
354 if (def == S_DEF_USER) {
355 sym = sym_find(line + strlen(CONFIG_));
357 sym_add_change_count(1);
361 sym = sym_lookup(line + strlen(CONFIG_), 0);
362 if (sym->type == S_UNKNOWN)
365 if (sym->flags & def_flags) {
366 conf_warning("override: reassigning to symbol %s", sym->name);
368 if (conf_set_sym_val(sym, def, def_flags, p))
371 if (line[0] != '\r' && line[0] != '\n')
372 conf_warning("unexpected data");
376 if (sym && sym_is_choice_value(sym)) {
377 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
378 switch (sym->def[def].tri) {
382 if (cs->def[def].tri == yes) {
383 conf_warning("%s creates inconsistent choice state", sym->name);
384 cs->flags &= ~def_flags;
388 if (cs->def[def].tri != no)
389 conf_warning("override: %s changes choice state", sym->name);
390 cs->def[def].val = sym;
393 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
400 sym_calc_value(modules_sym);
404 int conf_read(const char *name)
409 sym_set_change_count(0);
411 if (conf_read_simple(name, S_DEF_USER))
414 for_all_symbols(i, sym) {
416 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
418 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
419 /* check that calculated value agrees with saved value */
423 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
425 if (!sym_is_choice(sym))
429 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
433 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
434 /* no previous value and not saved */
437 /* maybe print value in verbose mode... */
440 for_all_symbols(i, sym) {
441 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
442 /* Reset values of generates values, so they'll appear
443 * as new, if they should become visible, but that
444 * doesn't quite work if the Kconfig and the saved
445 * configuration disagree.
447 if (sym->visible == no && !conf_unsaved)
448 sym->flags &= ~SYMBOL_DEF_USER;
453 /* Reset a string value if it's out of range */
454 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
456 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
465 sym_add_change_count(conf_warnings || conf_unsaved);
471 * Kconfig configuration printer
473 * This printer is used when generating the resulting configuration after
474 * kconfig invocation and `defconfig' files. Unset symbol might be omitted by
475 * passing a non-NULL argument to the printer.
479 kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
486 bool skip_unset = (arg != NULL);
489 fprintf(fp, "# %s%s is not set\n",
498 fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
502 kconfig_print_comment(FILE *fp, const char *value, void *arg)
504 const char *p = value;
508 l = strcspn(p, "\n");
512 xfwrite(p, l, 1, fp);
521 static struct conf_printer kconfig_printer_cb =
523 .print_symbol = kconfig_print_symbol,
524 .print_comment = kconfig_print_comment,
530 * This printer is used when generating the `include/generated/autoconf.h' file.
533 header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
539 const char *suffix = "";
548 fprintf(fp, "#define %s%s%s 1\n",
549 CONFIG_, sym->name, suffix);
554 const char *prefix = "";
556 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
558 fprintf(fp, "#define %s%s %s%s\n",
559 CONFIG_, sym->name, prefix, value);
564 fprintf(fp, "#define %s%s %s\n",
565 CONFIG_, sym->name, value);
574 header_print_comment(FILE *fp, const char *value, void *arg)
576 const char *p = value;
581 l = strcspn(p, "\n");
585 xfwrite(p, l, 1, fp);
592 fprintf(fp, " */\n");
595 static struct conf_printer header_printer_cb =
597 .print_symbol = header_print_symbol,
598 .print_comment = header_print_comment,
604 * This printer is used when generating the `include/config/tristate.conf' file.
607 tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
610 if (sym->type == S_TRISTATE && *value != 'n')
611 fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
614 static struct conf_printer tristate_printer_cb =
616 .print_symbol = tristate_print_symbol,
617 .print_comment = kconfig_print_comment,
620 static void conf_write_symbol(FILE *fp, struct symbol *sym,
621 struct conf_printer *printer, void *printer_arg)
630 str = sym_get_string_value(sym);
631 str = sym_escape_string_value(str);
632 printer->print_symbol(fp, sym, str, printer_arg);
636 str = sym_get_string_value(sym);
637 printer->print_symbol(fp, sym, str, printer_arg);
642 conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
646 snprintf(buf, sizeof(buf),
648 "Automatically generated file; DO NOT EDIT.\n"
650 rootmenu.prompt->text);
652 printer->print_comment(fp, buf, printer_arg);
656 * Write out a minimal config.
657 * All values that has default values are skipped as this is redundant.
659 int conf_write_defconfig(const char *filename)
665 out = fopen(filename, "w");
669 sym_clear_all_valid();
671 /* Traverse all menus to find all relevant symbols */
672 menu = rootmenu.list;
678 if (!menu_is_visible(menu))
680 } else if (!sym_is_choice(sym)) {
682 if (!(sym->flags & SYMBOL_WRITE))
684 sym->flags &= ~SYMBOL_WRITE;
685 /* If we cannot change the symbol - skip */
686 if (!sym_is_changable(sym))
688 /* If symbol equals to default value - skip */
689 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
693 * If symbol is a choice value and equals to the
694 * default for a choice - skip.
695 * But only if value is bool and equal to "y" and
696 * choice is not "optional".
697 * (If choice is "optional" then all values can be "n")
699 if (sym_is_choice_value(sym)) {
703 cs = prop_get_symbol(sym_get_choice_prop(sym));
704 ds = sym_choice_default(cs);
705 if (!sym_is_optional(cs) && sym == ds) {
706 if ((sym->type == S_BOOLEAN) &&
707 sym_get_tristate_value(sym) == yes)
711 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
714 if (menu->list != NULL) {
717 else if (menu->next != NULL) {
720 while ((menu = menu->parent)) {
721 if (menu->next != NULL) {
732 int conf_write(const char *name)
737 const char *basename;
739 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
743 if (name && name[0]) {
747 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
748 strcpy(dirname, name);
749 strcat(dirname, "/");
750 basename = conf_get_configname();
751 } else if ((slash = strrchr(name, '/'))) {
752 int size = slash - name + 1;
753 memcpy(dirname, name, size);
756 basename = slash + 1;
758 basename = conf_get_configname();
762 basename = conf_get_configname();
764 sprintf(newname, "%s%s", dirname, basename);
765 env = getenv("KCONFIG_OVERWRITECONFIG");
767 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
768 out = fopen(tmpname, "w");
771 out = fopen(newname, "w");
776 conf_write_heading(out, &kconfig_printer_cb, NULL);
778 if (!conf_get_changed())
779 sym_clear_all_valid();
781 menu = rootmenu.list;
785 if (!menu_is_visible(menu))
787 str = menu_get_prompt(menu);
792 } else if (!(sym->flags & SYMBOL_CHOICE)) {
794 if (!(sym->flags & SYMBOL_WRITE))
796 sym->flags &= ~SYMBOL_WRITE;
798 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
808 else while ((menu = menu->parent)) {
818 strcat(dirname, basename);
819 strcat(dirname, ".old");
820 rename(newname, dirname);
821 if (rename(tmpname, newname))
825 conf_message(_("configuration written to %s"), newname);
827 sym_set_change_count(0);
832 static int conf_split_config(void)
835 char path[PATH_MAX+1];
841 name = conf_get_autoconfig_name();
842 conf_read_simple(name, S_DEF_AUTO);
845 if (mkdir("tmp", S_IRWXU | S_IRWXG | S_IROTH | S_IXOTH))
853 for_all_symbols(i, sym) {
855 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
857 if (sym->flags & SYMBOL_WRITE) {
858 if (sym->flags & SYMBOL_DEF_AUTO) {
860 * symbol has old and new value,
866 if (sym_get_tristate_value(sym) ==
867 sym->def[S_DEF_AUTO].tri)
873 if (!strcmp(sym_get_string_value(sym),
874 sym->def[S_DEF_AUTO].val))
882 * If there is no old value, only 'no' (unset)
883 * is allowed as new value.
888 if (sym_get_tristate_value(sym) == no)
895 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
896 /* There is neither an old nor a new value. */
899 * There is an old value, but no new value ('no' (unset)
900 * isn't saved in auto.conf, so the old value is always
901 * different from 'no').
904 /* Replace all '_' and append ".h" */
909 *d++ = (c == '_') ? '/' : c;
913 /* Assume directory path already exists. */
914 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
916 if (errno != ENOENT) {
921 * Create directory components,
922 * unless they exist already.
925 while ((d = strchr(d, '/'))) {
927 if (stat(path, &sb) && mkdir(path, 0755)) {
934 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
951 int conf_write_autoconf(const char* filename)
954 autoconfig_name=(char*)filename;
955 const char *name=conf_get_autoconfig_name();
956 FILE *out, *tristate, *out_h;
959 file_write_dep("include/config/auto.conf.cmd");
961 if (conf_split_config()) {
965 out = fopen(".tmpconfig", "w");
970 tristate = fopen(".tmpconfig_tristate", "w");
976 out_h = fopen(".tmpconfig.h", "w");
982 conf_write_heading(out, &kconfig_printer_cb, NULL);
984 conf_write_heading(tristate, &tristate_printer_cb, NULL);
986 conf_write_heading(out_h, &header_printer_cb, NULL);
988 for_all_symbols(i, sym) {
990 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
993 /* write symbol to auto.conf, tristate and header files */
994 conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
996 conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);
998 conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
1005 if (rename(".tmpconfig.h", name)) {
1012 static int sym_change_count;
1013 static void (*conf_changed_callback)(void);
1015 void sym_set_change_count(int count)
1017 int _sym_change_count = sym_change_count;
1018 sym_change_count = count;
1019 if (conf_changed_callback &&
1020 (bool)_sym_change_count != (bool)count)
1021 conf_changed_callback();
1024 void sym_add_change_count(int count)
1026 sym_set_change_count(count + sym_change_count);
1029 bool conf_get_changed(void)
1031 return sym_change_count;
1034 void conf_set_changed_callback(void (*fn)(void))
1036 conf_changed_callback = fn;
1039 static void randomize_choice_values(struct symbol *csym)
1041 struct property *prop;
1047 * If choice is mod then we may have more items selected
1048 * and if no then no-one.
1049 * In both cases stop.
1051 if (csym->curr.tri != yes)
1054 prop = sym_get_choice_prop(csym);
1056 /* count entries in choice block */
1058 expr_list_for_each_sym(prop->expr, e, sym)
1062 * find a random value and set it to yes,
1063 * set the rest to no so we have only one set
1065 def = (rand() % cnt);
1068 expr_list_for_each_sym(prop->expr, e, sym) {
1070 sym->def[S_DEF_USER].tri = yes;
1071 csym->def[S_DEF_USER].val = sym;
1074 sym->def[S_DEF_USER].tri = no;
1077 csym->flags |= SYMBOL_DEF_USER;
1078 /* clear VALID to get value calculated */
1079 csym->flags &= ~(SYMBOL_VALID);
1082 static void set_all_choice_values(struct symbol *csym)
1084 struct property *prop;
1088 prop = sym_get_choice_prop(csym);
1091 * Set all non-assinged choice values to no
1093 expr_list_for_each_sym(prop->expr, e, sym) {
1094 if (!sym_has_value(sym))
1095 sym->def[S_DEF_USER].tri = no;
1097 csym->flags |= SYMBOL_DEF_USER;
1098 /* clear VALID to get value calculated */
1099 csym->flags &= ~(SYMBOL_VALID);
1102 void conf_set_all_new_symbols(enum conf_def_mode mode)
1104 struct symbol *sym, *csym;
1107 for_all_symbols(i, sym) {
1108 if (sym_has_value(sym))
1110 switch (sym_get_type(sym)) {
1115 sym->def[S_DEF_USER].tri = yes;
1118 sym->def[S_DEF_USER].tri = mod;
1121 sym->def[S_DEF_USER].tri = no;
1124 cnt = sym_get_type(sym) == S_TRISTATE ? 3 : 2;
1125 sym->def[S_DEF_USER].tri = (tristate)(rand() % cnt);
1130 if (!(sym_is_choice(sym) && mode == def_random))
1131 sym->flags |= SYMBOL_DEF_USER;
1139 sym_clear_all_valid();
1142 * We have different type of choice blocks.
1143 * If curr.tri equals to mod then we can select several
1144 * choice symbols in one block.
1145 * In this case we do nothing.
1146 * If curr.tri equals yes then only one symbol can be
1147 * selected in a choice block and we set it to yes,
1148 * and the rest to no.
1150 for_all_symbols(i, csym) {
1151 if (sym_has_value(csym) || !sym_is_choice(csym))
1154 sym_calc_value(csym);
1155 if (mode == def_random)
1156 randomize_choice_values(csym);
1158 set_all_choice_values(csym);