sh: convert /proc/cpu/aligmnent, /proc/cpu/kernel_alignment to seq_file
[safe/jmp/linux-2.6] / scripts / kconfig / confdata.c
index 66b15ef..b55e72f 100644 (file)
@@ -41,6 +41,13 @@ const char *conf_get_configname(void)
        return name ? name : ".config";
 }
 
+const char *conf_get_autoconfig_name(void)
+{
+       char *name = getenv("KCONFIG_AUTOCONFIG");
+
+       return name ? name : "include/config/auto.conf";
+}
+
 static char *conf_expand_value(const char *in)
 {
        struct symbol *sym;
@@ -83,6 +90,68 @@ char *conf_get_default_confname(void)
        return name;
 }
 
+static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
+{
+       char *p2;
+
+       switch (sym->type) {
+       case S_TRISTATE:
+               if (p[0] == 'm') {
+                       sym->def[def].tri = mod;
+                       sym->flags |= def_flags;
+                       break;
+               }
+       case S_BOOLEAN:
+               if (p[0] == 'y') {
+                       sym->def[def].tri = yes;
+                       sym->flags |= def_flags;
+                       break;
+               }
+               if (p[0] == 'n') {
+                       sym->def[def].tri = no;
+                       sym->flags |= def_flags;
+                       break;
+               }
+               conf_warning("symbol value '%s' invalid for %s", p, sym->name);
+               break;
+       case S_OTHER:
+               if (*p != '"') {
+                       for (p2 = p; *p2 && !isspace(*p2); p2++)
+                               ;
+                       sym->type = S_STRING;
+                       goto done;
+               }
+       case S_STRING:
+               if (*p++ != '"')
+                       break;
+               for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
+                       if (*p2 == '"') {
+                               *p2 = 0;
+                               break;
+                       }
+                       memmove(p2, p2 + 1, strlen(p2));
+               }
+               if (!p2) {
+                       conf_warning("invalid string found");
+                       return 1;
+               }
+       case S_INT:
+       case S_HEX:
+       done:
+               if (sym_string_valid(sym, p)) {
+                       sym->def[def].val = strdup(p);
+                       sym->flags |= def_flags;
+               } else {
+                       conf_warning("symbol value '%s' invalid for %s", p, sym->name);
+                       return 1;
+               }
+               break;
+       default:
+               ;
+       }
+       return 0;
+}
+
 int conf_read_simple(const char *name, int def)
 {
        FILE *in = NULL;
@@ -100,7 +169,7 @@ int conf_read_simple(const char *name, int def)
                in = zconf_fopen(name);
                if (in)
                        goto load;
-               sym_change_count++;
+               sym_add_change_count(1);
                if (!sym_defconfig_list)
                        return 1;
 
@@ -161,7 +230,7 @@ load:
                        if (def == S_DEF_USER) {
                                sym = sym_find(line + 9);
                                if (!sym) {
-                                       conf_warning("trying to assign nonexistent symbol %s", line + 9);
+                                       sym_add_change_count(1);
                                        break;
                                }
                        } else {
@@ -170,8 +239,7 @@ load:
                                        sym->type = S_BOOLEAN;
                        }
                        if (sym->flags & def_flags) {
-                               conf_warning("trying to reassign symbol %s", sym->name);
-                               break;
+                               conf_warning("override: reassigning to symbol %s", sym->name);
                        }
                        switch (sym->type) {
                        case S_BOOLEAN:
@@ -201,7 +269,7 @@ load:
                        if (def == S_DEF_USER) {
                                sym = sym_find(line + 7);
                                if (!sym) {
-                                       conf_warning("trying to assign nonexistent symbol %s", line + 7);
+                                       sym_add_change_count(1);
                                        break;
                                }
                        } else {
@@ -210,64 +278,10 @@ load:
                                        sym->type = S_OTHER;
                        }
                        if (sym->flags & def_flags) {
-                               conf_warning("trying to reassign symbol %s", sym->name);
-                               break;
-                       }
-                       switch (sym->type) {
-                       case S_TRISTATE:
-                               if (p[0] == 'm') {
-                                       sym->def[def].tri = mod;
-                                       sym->flags |= def_flags;
-                                       break;
-                               }
-                       case S_BOOLEAN:
-                               if (p[0] == 'y') {
-                                       sym->def[def].tri = yes;
-                                       sym->flags |= def_flags;
-                                       break;
-                               }
-                               if (p[0] == 'n') {
-                                       sym->def[def].tri = no;
-                                       sym->flags |= def_flags;
-                                       break;
-                               }
-                               conf_warning("symbol value '%s' invalid for %s", p, sym->name);
-                               break;
-                       case S_OTHER:
-                               if (*p != '"') {
-                                       for (p2 = p; *p2 && !isspace(*p2); p2++)
-                                               ;
-                                       sym->type = S_STRING;
-                                       goto done;
-                               }
-                       case S_STRING:
-                               if (*p++ != '"')
-                                       break;
-                               for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
-                                       if (*p2 == '"') {
-                                               *p2 = 0;
-                                               break;
-                                       }
-                                       memmove(p2, p2 + 1, strlen(p2));
-                               }
-                               if (!p2) {
-                                       conf_warning("invalid string found");
-                                       continue;
-                               }
-                       case S_INT:
-                       case S_HEX:
-                       done:
-                               if (sym_string_valid(sym, p)) {
-                                       sym->def[def].val = strdup(p);
-                                       sym->flags |= def_flags;
-                               } else {
-                                       conf_warning("symbol value '%s' invalid for %s", p, sym->name);
-                                       continue;
-                               }
-                               break;
-                       default:
-                               ;
+                               conf_warning("override: reassigning to symbol %s", sym->name);
                        }
+                       if (conf_set_sym_val(sym, def, def_flags, p))
+                               continue;
                        break;
                case '\r':
                case '\n':
@@ -288,14 +302,12 @@ load:
                                }
                                break;
                        case yes:
-                               if (cs->def[def].tri != no) {
-                                       conf_warning("%s creates inconsistent choice state", sym->name);
-                                       cs->flags &= ~def_flags;
-                               } else
-                                       cs->def[def].val = sym;
+                               if (cs->def[def].tri != no)
+                                       conf_warning("override: %s changes choice state", sym->name);
+                               cs->def[def].val = sym;
                                break;
                        }
-                       cs->def[def].tri = E_OR(cs->def[def].tri, sym->def[def].tri);
+                       cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
                }
        }
        fclose(in);
@@ -307,12 +319,12 @@ load:
 
 int conf_read(const char *name)
 {
-       struct symbol *sym;
+       struct symbol *sym, *choice_sym;
        struct property *prop;
        struct expr *e;
        int i, flags;
 
-       sym_change_count = 0;
+       sym_set_change_count(0);
 
        if (conf_read_simple(name, S_DEF_USER))
                return 1;
@@ -341,30 +353,45 @@ int conf_read(const char *name)
                conf_unsaved++;
                /* maybe print value in verbose mode... */
        sym_ok:
+               if (!sym_is_choice(sym))
+                       continue;
+               /* The choice symbol only has a set value (and thus is not new)
+                * if all its visible childs have values.
+                */
+               prop = sym_get_choice_prop(sym);
+               flags = sym->flags;
+               expr_list_for_each_sym(prop->expr, e, choice_sym)
+                       if (choice_sym->visible != no)
+                               flags &= choice_sym->flags;
+               sym->flags &= flags | ~SYMBOL_DEF_USER;
+       }
+
+       for_all_symbols(i, sym) {
                if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
-                       if (sym->visible == no)
+                       /* Reset values of generates values, so they'll appear
+                        * as new, if they should become visible, but that
+                        * doesn't quite work if the Kconfig and the saved
+                        * configuration disagree.
+                        */
+                       if (sym->visible == no && !conf_unsaved)
                                sym->flags &= ~SYMBOL_DEF_USER;
                        switch (sym->type) {
                        case S_STRING:
                        case S_INT:
                        case S_HEX:
-                               if (!sym_string_within_range(sym, sym->def[S_DEF_USER].val))
-                                       sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
+                               /* Reset a string value if it's out of range */
+                               if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
+                                       break;
+                               sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
+                               conf_unsaved++;
+                               break;
                        default:
                                break;
                        }
                }
-               if (!sym_is_choice(sym))
-                       continue;
-               prop = sym_get_choice_prop(sym);
-               flags = sym->flags;
-               for (e = prop->expr; e; e = e->left.expr)
-                       if (e->right.sym->visible != no)
-                               flags &= e->right.sym->flags;
-               sym->flags &= flags | ~SYMBOL_DEF_USER;
        }
 
-       sym_change_count += conf_warnings || conf_unsaved;
+       sym_add_change_count(conf_warnings || conf_unsaved);
 
        return 0;
 }
@@ -432,7 +459,7 @@ int conf_write(const char *name)
                     use_timestamp ? "# " : "",
                     use_timestamp ? ctime(&now) : "");
 
-       if (!sym_change_count)
+       if (!conf_get_changed())
                sym_clear_all_valid();
 
        menu = rootmenu.list;
@@ -528,22 +555,21 @@ int conf_write(const char *name)
                 "# configuration written to %s\n"
                 "#\n"), newname);
 
-       sym_change_count = 0;
+       sym_set_change_count(0);
 
        return 0;
 }
 
-int conf_split_config(void)
+static int conf_split_config(void)
 {
-       char *name, path[128];
+       const char *name;
+       char path[128];
        char *s, *d, c;
        struct symbol *sym;
        struct stat sb;
        int res, i, fd;
 
-       name = getenv("KCONFIG_AUTOCONFIG");
-       if (!name)
-               name = "include/config/auto.conf";
+       name = conf_get_autoconfig_name();
        conf_read_simple(name, S_DEF_AUTO);
 
        if (chdir("include/config"))
@@ -650,7 +676,7 @@ int conf_write_autoconf(void)
 {
        struct symbol *sym;
        const char *str;
-       char *name;
+       const char *name;
        FILE *out, *out_h;
        time_t now;
        int i, l;
@@ -753,9 +779,7 @@ int conf_write_autoconf(void)
                name = "include/linux/autoconf.h";
        if (rename(".tmpconfig.h", name))
                return 1;
-       name = getenv("KCONFIG_AUTOCONFIG");
-       if (!name)
-               name = "include/config/auto.conf";
+       name = conf_get_autoconfig_name();
        /*
         * This must be the last step, kbuild has a dependency on auto.conf
         * and this marks the successful completion of the previous steps.
@@ -765,3 +789,120 @@ int conf_write_autoconf(void)
 
        return 0;
 }
+
+static int sym_change_count;
+static void (*conf_changed_callback)(void);
+
+void sym_set_change_count(int count)
+{
+       int _sym_change_count = sym_change_count;
+       sym_change_count = count;
+       if (conf_changed_callback &&
+           (bool)_sym_change_count != (bool)count)
+               conf_changed_callback();
+}
+
+void sym_add_change_count(int count)
+{
+       sym_set_change_count(count + sym_change_count);
+}
+
+bool conf_get_changed(void)
+{
+       return sym_change_count;
+}
+
+void conf_set_changed_callback(void (*fn)(void))
+{
+       conf_changed_callback = fn;
+}
+
+
+void conf_set_all_new_symbols(enum conf_def_mode mode)
+{
+       struct symbol *sym, *csym;
+       struct property *prop;
+       struct expr *e;
+       int i, cnt, def;
+
+       for_all_symbols(i, sym) {
+               if (sym_has_value(sym))
+                       continue;
+               switch (sym_get_type(sym)) {
+               case S_BOOLEAN:
+               case S_TRISTATE:
+                       switch (mode) {
+                       case def_yes:
+                               sym->def[S_DEF_USER].tri = yes;
+                               break;
+                       case def_mod:
+                               sym->def[S_DEF_USER].tri = mod;
+                               break;
+                       case def_no:
+                               sym->def[S_DEF_USER].tri = no;
+                               break;
+                       case def_random:
+                               sym->def[S_DEF_USER].tri = (tristate)(rand() % 3);
+                               break;
+                       default:
+                               continue;
+                       }
+                       if (!(sym_is_choice(sym) && mode == def_random))
+                               sym->flags |= SYMBOL_DEF_USER;
+                       break;
+               default:
+                       break;
+               }
+
+       }
+
+       sym_clear_all_valid();
+
+       if (mode != def_random)
+               return;
+       /*
+        * We have different type of choice blocks.
+        * If curr.tri equal to mod then we can select several
+        * choice symbols in one block.
+        * In this case we do nothing.
+        * If curr.tri equal yes then only one symbol can be
+        * selected in a choice block and we set it to yes,
+        * and the rest to no.
+        */
+       for_all_symbols(i, csym) {
+               if (sym_has_value(csym) || !sym_is_choice(csym))
+                       continue;
+
+               sym_calc_value(csym);
+
+               if (csym->curr.tri != yes)
+                       continue;
+
+               prop = sym_get_choice_prop(csym);
+
+               /* count entries in choice block */
+               cnt = 0;
+               expr_list_for_each_sym(prop->expr, e, sym)
+                       cnt++;
+
+               /*
+                * find a random value and set it to yes,
+                * set the rest to no so we have only one set
+                */
+               def = (rand() % cnt);
+
+               cnt = 0;
+               expr_list_for_each_sym(prop->expr, e, sym) {
+                       if (def == cnt++) {
+                               sym->def[S_DEF_USER].tri = yes;
+                               csym->def[S_DEF_USER].val = sym;
+                       }
+                       else {
+                               sym->def[S_DEF_USER].tri = no;
+                       }
+               }
+               csym->flags |= SYMBOL_DEF_USER;
+               /* clear VALID to get value calculated */
+               csym->flags &= ~(SYMBOL_VALID);
+       }
+}