1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
21 /* return true if 'path' exists, false otherwise */
22 static bool is_present(const char *path)
26 return !stat(path, &st);
29 /* return true if 'path' exists and it is a directory, false otherwise */
30 static bool is_dir(const char *path)
37 return S_ISDIR(st.st_mode);
40 /* return true if the given two files are the same, false otherwise */
41 static bool is_same(const char *file1, const char *file2)
48 fd1 = open(file1, O_RDONLY);
52 fd2 = open(file2, O_RDONLY);
56 ret = fstat(fd1, &st1);
59 ret = fstat(fd2, &st2);
63 if (st1.st_size != st2.st_size)
66 map1 = mmap(NULL, st1.st_size, PROT_READ, MAP_PRIVATE, fd1, 0);
67 if (map1 == MAP_FAILED)
70 map2 = mmap(NULL, st2.st_size, PROT_READ, MAP_PRIVATE, fd2, 0);
71 if (map2 == MAP_FAILED)
74 if (bcmp(map1, map2, st1.st_size))
87 * Create the parent directory of the given path.
89 * For example, if 'include/config/auto.conf' is given, create 'include/config'.
91 static int make_parent_dir(const char *path)
93 char tmp[PATH_MAX + 1];
96 strncpy(tmp, path, sizeof(tmp));
97 tmp[sizeof(tmp) - 1] = 0;
99 /* Remove the base name. Just return if nothing is left */
100 p = strrchr(tmp, '/');
105 /* Just in case it is an absolute path */
110 while ((p = strchr(p, '/'))) {
113 /* skip if the directory exists */
114 if (!is_dir(tmp) && mkdir(tmp, 0755))
125 static char depfile_path[PATH_MAX];
126 static size_t depfile_prefix_len;
128 /* touch depfile for symbol 'name' */
129 static int conf_touch_dep(const char *name)
135 /* check overflow: prefix + name + ".h" + '\0' must fit in buffer. */
136 if (depfile_prefix_len + strlen(name) + 3 > sizeof(depfile_path))
139 d = depfile_path + depfile_prefix_len;
143 *d++ = (c == '_') ? '/' : tolower(c);
146 /* Assume directory path already exists. */
147 fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
152 ret = make_parent_dir(depfile_path);
157 fd = open(depfile_path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
166 struct conf_printer {
167 void (*print_symbol)(FILE *, struct symbol *, const char *, void *);
168 void (*print_comment)(FILE *, const char *, void *);
171 static void conf_warning(const char *fmt, ...)
172 __attribute__ ((format (printf, 1, 2)));
174 static void conf_message(const char *fmt, ...)
175 __attribute__ ((format (printf, 1, 2)));
177 static const char *conf_filename;
178 static int conf_lineno, conf_warnings;
180 static void conf_warning(const char *fmt, ...)
184 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
185 vfprintf(stderr, fmt, ap);
186 fprintf(stderr, "\n");
191 static void conf_default_message_callback(const char *s)
198 static void (*conf_message_callback)(const char *s) =
199 conf_default_message_callback;
200 void conf_set_message_callback(void (*fn)(const char *s))
202 conf_message_callback = fn;
205 static void conf_message(const char *fmt, ...)
210 if (!conf_message_callback)
215 vsnprintf(buf, sizeof(buf), fmt, ap);
216 conf_message_callback(buf);
220 const char *conf_get_configname(void)
222 char *name = getenv("KCONFIG_CONFIG");
224 return name ? name : ".config";
227 static const char *conf_get_autoconfig_name(void)
229 char *name = getenv("KCONFIG_AUTOCONFIG");
231 return name ? name : "include/config/auto.conf";
234 static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
241 sym->def[def].tri = mod;
242 sym->flags |= def_flags;
248 sym->def[def].tri = yes;
249 sym->flags |= def_flags;
253 sym->def[def].tri = no;
254 sym->flags |= def_flags;
257 if (def != S_DEF_AUTO)
258 conf_warning("symbol value '%s' invalid for %s",
264 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
269 memmove(p2, p2 + 1, strlen(p2));
272 if (def != S_DEF_AUTO)
273 conf_warning("invalid string found");
279 if (sym_string_valid(sym, p)) {
280 sym->def[def].val = xstrdup(p);
281 sym->flags |= def_flags;
283 if (def != S_DEF_AUTO)
284 conf_warning("symbol value '%s' invalid for %s",
295 #define LINE_GROWTH 16
296 static int add_byte(int c, char **lineptr, size_t slen, size_t *n)
299 size_t new_size = slen + 1;
301 new_size += LINE_GROWTH - 1;
303 nline = xrealloc(*lineptr, new_size);
311 (*lineptr)[slen] = c;
316 static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream)
318 char *line = *lineptr;
322 int c = getc(stream);
326 if (add_byte(c, &line, slen, n) < 0)
331 if (add_byte('\0', &line, slen, n) < 0)
338 if (add_byte(c, &line, slen, n) < 0)
350 void conf_reset(int def)
355 def_flags = SYMBOL_DEF << def;
356 for_all_symbols(i, sym) {
357 sym->flags |= SYMBOL_CHANGED;
358 sym->flags &= ~(def_flags|SYMBOL_VALID);
359 if (sym_is_choice(sym))
360 sym->flags |= def_flags;
365 if (sym->def[def].val)
366 free(sym->def[def].val);
369 sym->def[def].val = NULL;
370 sym->def[def].tri = no;
375 int conf_read_simple(const char *name, int def)
379 size_t line_asize = 0;
385 in = zconf_fopen(name);
387 struct property *prop;
389 name = conf_get_configname();
390 in = zconf_fopen(name);
393 sym_add_change_count(1);
394 if (!sym_defconfig_list)
397 for_all_defaults(sym_defconfig_list, prop) {
398 if (expr_calc_value(prop->visible.expr) == no ||
399 prop->expr->type != E_SYMBOL)
401 sym_calc_value(prop->expr->left.sym);
402 name = sym_get_string_value(prop->expr->left.sym);
403 in = zconf_fopen(name);
405 conf_message("using defaults found in %s",
415 conf_filename = name;
419 def_flags = SYMBOL_DEF << def;
422 while (compat_getline(&line, &line_asize, in) != -1) {
425 if (line[0] == '#') {
426 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
428 p = strchr(line + 2 + strlen(CONFIG_), ' ');
432 if (strncmp(p, "is not set", 10))
434 if (def == S_DEF_USER) {
435 sym = sym_find(line + 2 + strlen(CONFIG_));
437 sym_add_change_count(1);
441 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
442 if (sym->type == S_UNKNOWN)
443 sym->type = S_BOOLEAN;
448 sym->def[def].tri = no;
449 sym->flags |= def_flags;
454 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
455 p = strchr(line + strlen(CONFIG_), '=');
459 p2 = strchr(p, '\n');
466 sym = sym_find(line + strlen(CONFIG_));
468 if (def == S_DEF_AUTO)
470 * Reading from include/config/auto.conf
471 * If CONFIG_FOO previously existed in
472 * auto.conf but it is missing now,
473 * include/config/foo.h must be touched.
475 conf_touch_dep(line + strlen(CONFIG_));
477 sym_add_change_count(1);
481 if (conf_set_sym_val(sym, def, def_flags, p))
484 if (line[0] != '\r' && line[0] != '\n')
485 conf_warning("unexpected data: %.*s",
486 (int)strcspn(line, "\r\n"), line);
491 if (sym && sym_is_choice_value(sym)) {
492 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
493 switch (sym->def[def].tri) {
497 if (cs->def[def].tri == yes) {
498 conf_warning("%s creates inconsistent choice state", sym->name);
499 cs->flags &= ~def_flags;
503 if (cs->def[def].tri != no)
504 conf_warning("override: %s changes choice state", sym->name);
505 cs->def[def].val = sym;
508 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
516 int conf_read(const char *name)
519 int conf_unsaved = 0;
522 sym_set_change_count(0);
524 if (conf_read_simple(name, S_DEF_USER)) {
525 sym_calc_value(modules_sym);
529 sym_calc_value(modules_sym);
531 for_all_symbols(i, sym) {
533 if (sym_is_choice(sym) || (sym->flags & SYMBOL_NO_WRITE))
535 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
536 /* check that calculated value agrees with saved value */
540 if (sym->def[S_DEF_USER].tri == sym_get_tristate_value(sym))
544 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
548 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
549 /* no previous value and not saved */
552 /* maybe print value in verbose mode... */
555 for_all_symbols(i, sym) {
556 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
557 /* Reset values of generates values, so they'll appear
558 * as new, if they should become visible, but that
559 * doesn't quite work if the Kconfig and the saved
560 * configuration disagree.
562 if (sym->visible == no && !conf_unsaved)
563 sym->flags &= ~SYMBOL_DEF_USER;
568 /* Reset a string value if it's out of range */
569 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
571 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
580 sym_add_change_count(conf_warnings || conf_unsaved);
586 * Kconfig configuration printer
588 * This printer is used when generating the resulting configuration after
589 * kconfig invocation and `defconfig' files. Unset symbol might be omitted by
590 * passing a non-NULL argument to the printer.
594 kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
601 bool skip_unset = (arg != NULL);
604 fprintf(fp, "# %s%s is not set\n",
613 fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
617 kconfig_print_comment(FILE *fp, const char *value, void *arg)
619 const char *p = value;
623 l = strcspn(p, "\n");
627 xfwrite(p, l, 1, fp);
636 static struct conf_printer kconfig_printer_cb =
638 .print_symbol = kconfig_print_symbol,
639 .print_comment = kconfig_print_comment,
645 * This printer is used when generating the `include/generated/autoconf.h' file.
648 header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
654 const char *suffix = "";
663 fprintf(fp, "#define %s%s%s 1\n",
664 CONFIG_, sym->name, suffix);
669 const char *prefix = "";
671 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
673 fprintf(fp, "#define %s%s %s%s\n",
674 CONFIG_, sym->name, prefix, value);
679 fprintf(fp, "#define %s%s %s\n",
680 CONFIG_, sym->name, value);
689 header_print_comment(FILE *fp, const char *value, void *arg)
691 const char *p = value;
696 l = strcspn(p, "\n");
700 xfwrite(p, l, 1, fp);
707 fprintf(fp, " */\n");
710 static struct conf_printer header_printer_cb =
712 .print_symbol = header_print_symbol,
713 .print_comment = header_print_comment,
716 static void conf_write_symbol(FILE *fp, struct symbol *sym,
717 struct conf_printer *printer, void *printer_arg)
725 str = sym_get_string_value(sym);
726 str = sym_escape_string_value(str);
727 printer->print_symbol(fp, sym, str, printer_arg);
731 str = sym_get_string_value(sym);
732 printer->print_symbol(fp, sym, str, printer_arg);
737 conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
741 snprintf(buf, sizeof(buf),
743 "Automatically generated file; DO NOT EDIT.\n"
745 rootmenu.prompt->text);
747 printer->print_comment(fp, buf, printer_arg);
751 * Write out a minimal config.
752 * All values that has default values are skipped as this is redundant.
754 int conf_write_defconfig(const char *filename)
760 out = fopen(filename, "w");
764 sym_clear_all_valid();
766 /* Traverse all menus to find all relevant symbols */
767 menu = rootmenu.list;
773 if (!menu_is_visible(menu))
775 } else if (!sym_is_choice(sym)) {
777 if (!(sym->flags & SYMBOL_WRITE))
779 sym->flags &= ~SYMBOL_WRITE;
780 /* If we cannot change the symbol - skip */
781 if (!sym_is_changeable(sym))
783 /* If symbol equals to default value - skip */
784 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
788 * If symbol is a choice value and equals to the
789 * default for a choice - skip.
790 * But only if value is bool and equal to "y" and
791 * choice is not "optional".
792 * (If choice is "optional" then all values can be "n")
794 if (sym_is_choice_value(sym)) {
798 cs = prop_get_symbol(sym_get_choice_prop(sym));
799 ds = sym_choice_default(cs);
800 if (!sym_is_optional(cs) && sym == ds) {
801 if ((sym->type == S_BOOLEAN) &&
802 sym_get_tristate_value(sym) == yes)
806 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
809 if (menu->list != NULL) {
812 else if (menu->next != NULL) {
815 while ((menu = menu->parent)) {
816 if (menu->next != NULL) {
827 int conf_write(const char *name)
833 char tmpname[PATH_MAX + 1], oldname[PATH_MAX + 1];
836 bool need_newline = false;
839 name = conf_get_configname();
842 fprintf(stderr, "config name is empty\n");
847 fprintf(stderr, "%s: Is a directory\n", name);
851 if (make_parent_dir(name))
854 env = getenv("KCONFIG_OVERWRITECONFIG");
857 out = fopen(name, "w");
859 snprintf(tmpname, sizeof(tmpname), "%s.%d.tmp",
860 name, (int)getpid());
861 out = fopen(tmpname, "w");
866 conf_write_heading(out, &kconfig_printer_cb, NULL);
868 if (!conf_get_changed())
869 sym_clear_all_valid();
871 menu = rootmenu.list;
875 if (!menu_is_visible(menu))
877 str = menu_get_prompt(menu);
882 need_newline = false;
883 } else if (!(sym->flags & SYMBOL_CHOICE) &&
884 !(sym->flags & SYMBOL_WRITTEN)) {
886 if (!(sym->flags & SYMBOL_WRITE))
890 need_newline = false;
892 sym->flags |= SYMBOL_WRITTEN;
893 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
903 else while ((menu = menu->parent)) {
904 if (!menu->sym && menu_is_visible(menu) &&
906 str = menu_get_prompt(menu);
907 fprintf(out, "# end of %s\n", str);
918 for_all_symbols(i, sym)
919 sym->flags &= ~SYMBOL_WRITTEN;
922 if (is_same(name, tmpname)) {
923 conf_message("No change to %s", name);
925 sym_set_change_count(0);
929 snprintf(oldname, sizeof(oldname), "%s.old", name);
930 rename(name, oldname);
931 if (rename(tmpname, name))
935 conf_message("configuration written to %s", name);
937 sym_set_change_count(0);
942 /* write a dependency file as used by kbuild to track dependencies */
943 static int conf_write_dep(const char *name)
948 out = fopen("..config.tmp", "w");
951 fprintf(out, "deps_config := \\\n");
952 for (file = file_list; file; file = file->next) {
954 fprintf(out, "\t%s \\\n", file->name);
956 fprintf(out, "\t%s\n", file->name);
958 fprintf(out, "\n%s: \\\n"
959 "\t$(deps_config)\n\n", conf_get_autoconfig_name());
961 env_write_dep(out, conf_get_autoconfig_name());
963 fprintf(out, "\n$(deps_config): ;\n");
966 if (make_parent_dir(name))
968 rename("..config.tmp", name);
972 static int conf_touch_deps(void)
978 strcpy(depfile_path, "include/config/");
979 depfile_prefix_len = strlen(depfile_path);
981 name = conf_get_autoconfig_name();
982 conf_read_simple(name, S_DEF_AUTO);
983 sym_calc_value(modules_sym);
985 for_all_symbols(i, sym) {
987 if ((sym->flags & SYMBOL_NO_WRITE) || !sym->name)
989 if (sym->flags & SYMBOL_WRITE) {
990 if (sym->flags & SYMBOL_DEF_AUTO) {
992 * symbol has old and new value,
998 if (sym_get_tristate_value(sym) ==
999 sym->def[S_DEF_AUTO].tri)
1005 if (!strcmp(sym_get_string_value(sym),
1006 sym->def[S_DEF_AUTO].val))
1014 * If there is no old value, only 'no' (unset)
1015 * is allowed as new value.
1017 switch (sym->type) {
1020 if (sym_get_tristate_value(sym) == no)
1027 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
1028 /* There is neither an old nor a new value. */
1031 * There is an old value, but no new value ('no' (unset)
1032 * isn't saved in auto.conf, so the old value is always
1033 * different from 'no').
1036 res = conf_touch_dep(sym->name);
1044 int conf_write_autoconf(int overwrite)
1048 const char *autoconf_name = conf_get_autoconfig_name();
1052 #ifndef OPENWRT_DOES_NOT_WANT_THIS
1055 if (!overwrite && is_present(autoconf_name))
1058 conf_write_dep("include/config/auto.conf.cmd");
1060 if (conf_touch_deps())
1063 out = fopen(".tmpconfig", "w");
1067 out_h = fopen(".tmpconfig.h", "w");
1073 conf_write_heading(out, &kconfig_printer_cb, NULL);
1074 conf_write_heading(out_h, &header_printer_cb, NULL);
1076 for_all_symbols(i, sym) {
1077 sym_calc_value(sym);
1078 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
1081 /* write symbols to auto.conf and autoconf.h */
1082 conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
1083 conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
1088 name = getenv("KCONFIG_AUTOHEADER");
1090 name = "include/generated/autoconf.h";
1091 if (make_parent_dir(name))
1093 if (rename(".tmpconfig.h", name))
1096 if (make_parent_dir(autoconf_name))
1099 * This must be the last step, kbuild has a dependency on auto.conf
1100 * and this marks the successful completion of the previous steps.
1102 if (rename(".tmpconfig", autoconf_name))
1108 static int sym_change_count;
1109 static void (*conf_changed_callback)(void);
1111 void sym_set_change_count(int count)
1113 int _sym_change_count = sym_change_count;
1114 sym_change_count = count;
1115 if (conf_changed_callback &&
1116 (bool)_sym_change_count != (bool)count)
1117 conf_changed_callback();
1120 void sym_add_change_count(int count)
1122 sym_set_change_count(count + sym_change_count);
1125 bool conf_get_changed(void)
1127 return sym_change_count;
1130 void conf_set_changed_callback(void (*fn)(void))
1132 conf_changed_callback = fn;
1135 static bool randomize_choice_values(struct symbol *csym)
1137 struct property *prop;
1143 * If choice is mod then we may have more items selected
1144 * and if no then no-one.
1145 * In both cases stop.
1147 if (csym->curr.tri != yes)
1150 prop = sym_get_choice_prop(csym);
1152 /* count entries in choice block */
1154 expr_list_for_each_sym(prop->expr, e, sym)
1158 * find a random value and set it to yes,
1159 * set the rest to no so we have only one set
1161 def = (rand() % cnt);
1164 expr_list_for_each_sym(prop->expr, e, sym) {
1166 sym->def[S_DEF_USER].tri = yes;
1167 csym->def[S_DEF_USER].val = sym;
1170 sym->def[S_DEF_USER].tri = no;
1172 sym->flags |= SYMBOL_DEF_USER;
1173 /* clear VALID to get value calculated */
1174 sym->flags &= ~SYMBOL_VALID;
1176 csym->flags |= SYMBOL_DEF_USER;
1177 /* clear VALID to get value calculated */
1178 csym->flags &= ~(SYMBOL_VALID);
1183 void set_all_choice_values(struct symbol *csym)
1185 struct property *prop;
1189 prop = sym_get_choice_prop(csym);
1192 * Set all non-assinged choice values to no
1194 expr_list_for_each_sym(prop->expr, e, sym) {
1195 if (!sym_has_value(sym))
1196 sym->def[S_DEF_USER].tri = no;
1198 csym->flags |= SYMBOL_DEF_USER;
1199 /* clear VALID to get value calculated */
1200 csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES);
1203 bool conf_set_all_new_symbols(enum conf_def_mode mode)
1205 struct symbol *sym, *csym;
1206 int i, cnt, pby, pty, ptm; /* pby: probability of bool = y
1207 * pty: probability of tristate = y
1208 * ptm: probability of tristate = m
1211 pby = 50; pty = ptm = 33; /* can't go as the default in switch-case
1212 * below, otherwise gcc whines about
1213 * -Wmaybe-uninitialized */
1214 if (mode == def_random) {
1216 char *env = getenv("KCONFIG_PROBABILITY");
1218 while( env && *env ) {
1220 int tmp = strtol( env, &endp, 10 );
1221 if( tmp >= 0 && tmp <= 100 ) {
1225 perror( "KCONFIG_PROBABILITY" );
1228 env = (*endp == ':') ? endp+1 : endp;
1235 pby = p[0]; ptm = pby/2; pty = pby-ptm;
1238 pty = p[0]; ptm = p[1]; pby = pty + ptm;
1241 pby = p[0]; pty = p[1]; ptm = p[2];
1245 if( pty+ptm > 100 ) {
1247 perror( "KCONFIG_PROBABILITY" );
1251 bool has_changed = false;
1253 sym_clear_all_valid();
1255 for_all_symbols(i, sym) {
1256 if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID))
1258 switch (sym_get_type(sym)) {
1264 sym->def[S_DEF_USER].tri = yes;
1267 sym->def[S_DEF_USER].tri = mod;
1270 if (sym->flags & SYMBOL_ALLNOCONFIG_Y)
1271 sym->def[S_DEF_USER].tri = yes;
1273 sym->def[S_DEF_USER].tri = no;
1276 sym->def[S_DEF_USER].tri = no;
1278 if (sym->type == S_TRISTATE) {
1280 sym->def[S_DEF_USER].tri = yes;
1281 else if (cnt < (pty+ptm))
1282 sym->def[S_DEF_USER].tri = mod;
1283 } else if (cnt < pby)
1284 sym->def[S_DEF_USER].tri = yes;
1289 if (!(sym_is_choice(sym) && mode == def_random))
1290 sym->flags |= SYMBOL_DEF_USER;
1299 * We have different type of choice blocks.
1300 * If curr.tri equals to mod then we can select several
1301 * choice symbols in one block.
1302 * In this case we do nothing.
1303 * If curr.tri equals yes then only one symbol can be
1304 * selected in a choice block and we set it to yes,
1305 * and the rest to no.
1307 if (mode != def_random) {
1308 for_all_symbols(i, csym) {
1309 if ((sym_is_choice(csym) && !sym_has_value(csym)) ||
1310 sym_is_choice_value(csym))
1311 csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES;
1315 for_all_symbols(i, csym) {
1316 if (sym_has_value(csym) || !sym_is_choice(csym))
1319 sym_calc_value(csym);
1320 if (mode == def_random)
1321 has_changed = randomize_choice_values(csym);
1323 set_all_choice_values(csym);
1331 void conf_rewrite_mod_or_yes(enum conf_def_mode mode)
1335 tristate old_val = (mode == def_y2m) ? yes : mod;
1336 tristate new_val = (mode == def_y2m) ? mod : yes;
1338 for_all_symbols(i, sym) {
1339 if (sym_get_type(sym) == S_TRISTATE &&
1340 sym->def[S_DEF_USER].tri == old_val) {
1341 sym->def[S_DEF_USER].tri = new_val;
1342 sym_add_change_count(1);