struct symbol *modules_sym;
tristate modules_val;
+struct expr *sym_env_list;
+
void sym_add_default(struct symbol *sym, const char *def)
{
struct property *prop = prop_alloc(P_DEFAULT, sym);
- prop->expr = expr_alloc_symbol(sym_lookup(def, 1));
+ prop->expr = expr_alloc_symbol(sym_lookup(def, SYMBOL_CONST));
}
void sym_init(void)
{
struct symbol *sym;
struct utsname uts;
- char *p;
static bool inited = false;
if (inited)
uname(&uts);
- sym = sym_lookup("ARCH", 0);
- sym->type = S_STRING;
- sym->flags |= SYMBOL_AUTO;
- p = getenv("ARCH");
- if (p)
- sym_add_default(sym, p);
-
- sym = sym_lookup("KERNELVERSION", 0);
- sym->type = S_STRING;
- sym->flags |= SYMBOL_AUTO;
- p = getenv("KERNELVERSION");
- if (p)
- sym_add_default(sym, p);
-
sym = sym_lookup("UNAME_RELEASE", 0);
sym->type = S_STRING;
sym->flags |= SYMBOL_AUTO;
return NULL;
}
+struct property *sym_get_env_prop(struct symbol *sym)
+{
+ struct property *prop;
+
+ for_all_properties(sym, prop, P_ENV)
+ return prop;
+ return NULL;
+}
+
struct property *sym_get_default_prop(struct symbol *sym)
{
struct property *prop;
if (sym_is_choice_value(sym) && sym->visible == yes) {
prop = sym_get_choice_prop(sym);
newval.tri = (prop_get_symbol(prop)->curr.val == sym) ? yes : no;
- } else if (EXPR_OR(sym->visible, sym->rev_dep.tri) != no) {
- sym->flags |= SYMBOL_WRITE;
- if (sym_has_value(sym))
- newval.tri = sym->def[S_DEF_USER].tri;
- else if (!sym_is_choice(sym)) {
- prop = sym_get_default_prop(sym);
- if (prop)
- newval.tri = expr_calc_value(prop->expr);
+ } else {
+ if (sym->visible != no) {
+ /* if the symbol is visible use the user value
+ * if available, otherwise try the default value
+ */
+ sym->flags |= SYMBOL_WRITE;
+ if (sym_has_value(sym)) {
+ newval.tri = EXPR_AND(sym->def[S_DEF_USER].tri,
+ sym->visible);
+ goto calc_newval;
+ }
}
- newval.tri = EXPR_OR(EXPR_AND(newval.tri, sym->visible), sym->rev_dep.tri);
- } else if (!sym_is_choice(sym)) {
- prop = sym_get_default_prop(sym);
- if (prop) {
+ if (sym->rev_dep.tri != no)
sym->flags |= SYMBOL_WRITE;
- newval.tri = expr_calc_value(prop->expr);
+ if (!sym_is_choice(sym)) {
+ prop = sym_get_default_prop(sym);
+ if (prop) {
+ sym->flags |= SYMBOL_WRITE;
+ newval.tri = EXPR_AND(expr_calc_value(prop->expr),
+ prop->visible.tri);
+ }
}
+ calc_newval:
+ newval.tri = EXPR_OR(newval.tri, sym->rev_dep.tri);
}
if (newval.tri == mod && sym_get_type(sym) == S_BOOLEAN)
newval.tri = yes;
sym_set_changed(choice_sym);
}
}
+
+ if (sym->flags & SYMBOL_AUTO)
+ sym->flags &= ~SYMBOL_WRITE;
}
void sym_clear_all_valid(void)
return sym->visible > sym->rev_dep.tri;
}
-struct symbol *sym_lookup(const char *name, int isconst)
+struct symbol *sym_lookup(const char *name, int flags)
{
struct symbol *symbol;
const char *ptr;
hash &= 0xff;
for (symbol = symbol_hash[hash]; symbol; symbol = symbol->next) {
- if (!strcmp(symbol->name, name)) {
- if ((isconst && symbol->flags & SYMBOL_CONST) ||
- (!isconst && !(symbol->flags & SYMBOL_CONST)))
- return symbol;
- }
+ if (!strcmp(symbol->name, name) &&
+ (flags ? symbol->flags & flags
+ : !(symbol->flags & (SYMBOL_CONST|SYMBOL_CHOICE))))
+ return symbol;
}
new_name = strdup(name);
} else {
memset(symbol, 0, sizeof(*symbol));
symbol->name = new_name;
symbol->type = S_UNKNOWN;
- if (isconst)
- symbol->flags |= SYMBOL_CONST;
+ symbol->flags |= flags;
symbol->next = symbol_hash[hash];
symbol_hash[hash] = symbol;
}
-struct symbol *sym_check_deps(struct symbol *sym);
-
static struct symbol *sym_check_expr_deps(struct expr *e)
{
struct symbol *sym;
}
/* return NULL when dependencies are OK */
-struct symbol *sym_check_deps(struct symbol *sym)
+static struct symbol *sym_check_sym_deps(struct symbol *sym)
{
struct symbol *sym2;
struct property *prop;
- if (sym->flags & SYMBOL_CHECK) {
- fprintf(stderr, "%s:%d:error: found recursive dependency: %s",
- sym->prop->file->name, sym->prop->lineno, sym->name);
- return sym;
- }
- if (sym->flags & SYMBOL_CHECKED)
- return NULL;
-
- sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
sym2 = sym_check_expr_deps(sym->rev_dep.expr);
if (sym2)
- goto out;
+ return sym2;
for (prop = sym->prop; prop; prop = prop->next) {
if (prop->type == P_CHOICE || prop->type == P_SELECT)
continue;
sym2 = sym_check_expr_deps(prop->visible.expr);
if (sym2)
- goto out;
+ break;
if (prop->type != P_DEFAULT || sym_is_choice(sym))
continue;
sym2 = sym_check_expr_deps(prop->expr);
if (sym2)
- goto out;
+ break;
}
-out:
+
+ return sym2;
+}
+
+static struct symbol *sym_check_choice_deps(struct symbol *choice)
+{
+ struct symbol *sym, *sym2;
+ struct property *prop;
+ struct expr *e;
+
+ prop = sym_get_choice_prop(choice);
+ expr_list_for_each_sym(prop->expr, e, sym)
+ sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
+
+ choice->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
+ sym2 = sym_check_sym_deps(choice);
+ choice->flags &= ~SYMBOL_CHECK;
if (sym2)
- fprintf(stderr, " -> %s%s", sym->name, sym2 == sym? "\n": "");
- sym->flags &= ~SYMBOL_CHECK;
+ goto out;
+
+ expr_list_for_each_sym(prop->expr, e, sym) {
+ sym2 = sym_check_sym_deps(sym);
+ if (sym2) {
+ fprintf(stderr, " -> %s", sym->name);
+ break;
+ }
+ }
+out:
+ expr_list_for_each_sym(prop->expr, e, sym)
+ sym->flags &= ~SYMBOL_CHECK;
+
+ if (sym2 && sym_is_choice_value(sym2) &&
+ prop_get_symbol(sym_get_choice_prop(sym2)) == choice)
+ sym2 = choice;
+
+ return sym2;
+}
+
+struct symbol *sym_check_deps(struct symbol *sym)
+{
+ struct symbol *sym2;
+ struct property *prop;
+
+ if (sym->flags & SYMBOL_CHECK) {
+ fprintf(stderr, "%s:%d:error: found recursive dependency: %s",
+ sym->prop->file->name, sym->prop->lineno,
+ sym->name ? sym->name : "<choice>");
+ return sym;
+ }
+ if (sym->flags & SYMBOL_CHECKED)
+ return NULL;
+
+ if (sym_is_choice_value(sym)) {
+ /* for choice groups start the check with main choice symbol */
+ prop = sym_get_choice_prop(sym);
+ sym2 = sym_check_deps(prop_get_symbol(prop));
+ } else if (sym_is_choice(sym)) {
+ sym2 = sym_check_choice_deps(sym);
+ } else {
+ sym->flags |= (SYMBOL_CHECK | SYMBOL_CHECKED);
+ sym2 = sym_check_sym_deps(sym);
+ sym->flags &= ~SYMBOL_CHECK;
+ }
+
+ if (sym2) {
+ fprintf(stderr, " -> %s", sym->name ? sym->name : "<choice>");
+ if (sym2 == sym) {
+ fprintf(stderr, "\n");
+ zconfnerrs++;
+ sym2 = NULL;
+ }
+ }
+
return sym2;
}
switch (type) {
case P_PROMPT:
return "prompt";
+ case P_ENV:
+ return "env";
case P_COMMENT:
return "comment";
case P_MENU:
}
return "unknown";
}
+
+void prop_add_env(const char *env)
+{
+ struct symbol *sym, *sym2;
+ struct property *prop;
+ char *p;
+
+ sym = current_entry->sym;
+ sym->flags |= SYMBOL_AUTO;
+ for_all_properties(sym, prop, P_ENV) {
+ sym2 = prop_get_symbol(prop);
+ if (strcmp(sym2->name, env))
+ menu_warn(current_entry, "redefining environment symbol from %s",
+ sym2->name);
+ return;
+ }
+
+ prop = prop_alloc(P_ENV, sym);
+ prop->expr = expr_alloc_symbol(sym_lookup(env, SYMBOL_CONST));
+
+ sym_env_list = expr_alloc_one(E_LIST, sym_env_list);
+ sym_env_list->right.sym = sym;
+
+ p = getenv(env);
+ if (p)
+ sym_add_default(sym, p);
+ else
+ menu_warn(current_entry, "environment variable %s undefined", env);
+}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff