confdata.c 22.0 KB
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/*
 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
 * Released under the terms of the GNU GPL v2.0.
 */

#include <sys/stat.h>
#include <ctype.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>

#define LKC_DIRECT_LINK
#include "lkc.h"

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static void conf_warning(const char *fmt, ...)
	__attribute__ ((format (printf, 1, 2)));

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static void conf_message(const char *fmt, ...)
	__attribute__ ((format (printf, 1, 2)));

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static const char *conf_filename;
static int conf_lineno, conf_warnings, conf_unsaved;

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const char conf_defname[] = "arch/$ARCH/defconfig";

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static void conf_warning(const char *fmt, ...)
{
	va_list ap;
	va_start(ap, fmt);
	fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
	vfprintf(stderr, fmt, ap);
	fprintf(stderr, "\n");
	va_end(ap);
	conf_warnings++;
}

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static void conf_default_message_callback(const char *fmt, va_list ap)
{
	printf("#\n# ");
	vprintf(fmt, ap);
	printf("\n#\n");
}

static void (*conf_message_callback) (const char *fmt, va_list ap) =
	conf_default_message_callback;
void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap))
{
	conf_message_callback = fn;
}

static void conf_message(const char *fmt, ...)
{
	va_list ap;

	va_start(ap, fmt);
	if (conf_message_callback)
		conf_message_callback(fmt, ap);
}

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const char *conf_get_configname(void)
{
	char *name = getenv("KCONFIG_CONFIG");

	return name ? name : ".config";
}

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const char *conf_get_autoconfig_name(void)
{
	char *name = getenv("KCONFIG_AUTOCONFIG");

	return name ? name : "include/config/auto.conf";
}

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static char *conf_expand_value(const char *in)
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{
	struct symbol *sym;
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	const char *src;
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	static char res_value[SYMBOL_MAXLENGTH];
	char *dst, name[SYMBOL_MAXLENGTH];

	res_value[0] = 0;
	dst = name;
	while ((src = strchr(in, '$'))) {
		strncat(res_value, in, src - in);
		src++;
		dst = name;
		while (isalnum(*src) || *src == '_')
			*dst++ = *src++;
		*dst = 0;
		sym = sym_lookup(name, 0);
		sym_calc_value(sym);
		strcat(res_value, sym_get_string_value(sym));
		in = src;
	}
	strcat(res_value, in);

	return res_value;
}

char *conf_get_default_confname(void)
{
	struct stat buf;
	static char fullname[PATH_MAX+1];
	char *env, *name;

	name = conf_expand_value(conf_defname);
	env = getenv(SRCTREE);
	if (env) {
		sprintf(fullname, "%s/%s", env, name);
		if (!stat(fullname, &buf))
			return fullname;
	}
	return name;
}

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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;
}

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int conf_read_simple(const char *name, int def)
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{
	FILE *in = NULL;
	char line[1024];
	char *p, *p2;
	struct symbol *sym;
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	int i, def_flags;
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	if (name) {
		in = zconf_fopen(name);
	} else {
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		struct property *prop;

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		name = conf_get_configname();
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		in = zconf_fopen(name);
		if (in)
			goto load;
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		sym_add_change_count(1);
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		if (!sym_defconfig_list) {
			if (modules_sym)
				sym_calc_value(modules_sym);
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			return 1;
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		}
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		for_all_defaults(sym_defconfig_list, prop) {
			if (expr_calc_value(prop->visible.expr) == no ||
			    prop->expr->type != E_SYMBOL)
				continue;
			name = conf_expand_value(prop->expr->left.sym->name);
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			in = zconf_fopen(name);
			if (in) {
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				conf_message(_("using defaults found in %s"),
					 name);
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				goto load;
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			}
		}
	}
	if (!in)
		return 1;

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load:
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	conf_filename = name;
	conf_lineno = 0;
	conf_warnings = 0;
	conf_unsaved = 0;

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	def_flags = SYMBOL_DEF << def;
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	for_all_symbols(i, sym) {
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		sym->flags |= SYMBOL_CHANGED;
		sym->flags &= ~(def_flags|SYMBOL_VALID);
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		if (sym_is_choice(sym))
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			sym->flags |= def_flags;
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		switch (sym->type) {
		case S_INT:
		case S_HEX:
		case S_STRING:
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			if (sym->def[def].val)
				free(sym->def[def].val);
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		default:
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			sym->def[def].val = NULL;
			sym->def[def].tri = no;
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		}
	}

	while (fgets(line, sizeof(line), in)) {
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		conf_lineno++;
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		sym = NULL;
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		if (line[0] == '#') {
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			if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
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				continue;
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			p = strchr(line + 2 + strlen(CONFIG_), ' ');
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			if (!p)
				continue;
			*p++ = 0;
			if (strncmp(p, "is not set", 10))
				continue;
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			if (def == S_DEF_USER) {
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				sym = sym_find(line + 2 + strlen(CONFIG_));
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				if (!sym) {
					sym_add_change_count(1);
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					goto setsym;
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				}
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			} else {
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				sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
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				if (sym->type == S_UNKNOWN)
					sym->type = S_BOOLEAN;
			}
			if (sym->flags & def_flags) {
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				conf_warning("override: reassigning to symbol %s", sym->name);
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			}
			switch (sym->type) {
			case S_BOOLEAN:
			case S_TRISTATE:
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				sym->def[def].tri = no;
				sym->flags |= def_flags;
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				break;
			default:
				;
			}
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		} else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
			p = strchr(line + strlen(CONFIG_), '=');
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			if (!p)
				continue;
			*p++ = 0;
			p2 = strchr(p, '\n');
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			if (p2) {
				*p2-- = 0;
				if (*p2 == '\r')
					*p2 = 0;
			}
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			if (def == S_DEF_USER) {
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				sym = sym_find(line + strlen(CONFIG_));
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				if (!sym) {
					sym_add_change_count(1);
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					goto setsym;
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				}
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			} else {
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				sym = sym_lookup(line + strlen(CONFIG_), 0);
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				if (sym->type == S_UNKNOWN)
					sym->type = S_OTHER;
			}
			if (sym->flags & def_flags) {
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				conf_warning("override: reassigning to symbol %s", sym->name);
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			}
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			if (conf_set_sym_val(sym, def, def_flags, p))
				continue;
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		} else {
			if (line[0] != '\r' && line[0] != '\n')
				conf_warning("unexpected data");
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			continue;
		}
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setsym:
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		if (sym && sym_is_choice_value(sym)) {
			struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
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			switch (sym->def[def].tri) {
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			case no:
				break;
			case mod:
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				if (cs->def[def].tri == yes) {
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					conf_warning("%s creates inconsistent choice state", sym->name);
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					cs->flags &= ~def_flags;
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				}
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				break;
			case yes:
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				if (cs->def[def].tri != no)
					conf_warning("override: %s changes choice state", sym->name);
				cs->def[def].val = sym;
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				break;
			}
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			cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
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		}
	}
	fclose(in);

	if (modules_sym)
		sym_calc_value(modules_sym);
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	return 0;
}

int conf_read(const char *name)
{
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	struct symbol *sym, *choice_sym;
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	struct property *prop;
	struct expr *e;
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	int i, flags;
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	sym_set_change_count(0);
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	if (conf_read_simple(name, S_DEF_USER))
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		return 1;

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	for_all_symbols(i, sym) {
		sym_calc_value(sym);
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		if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
			goto sym_ok;
		if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
			/* check that calculated value agrees with saved value */
			switch (sym->type) {
			case S_BOOLEAN:
			case S_TRISTATE:
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				if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
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					break;
				if (!sym_is_choice(sym))
					goto sym_ok;
			default:
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				if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
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					goto sym_ok;
				break;
			}
		} else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
			/* no previous value and not saved */
			goto sym_ok;
		conf_unsaved++;
		/* maybe print value in verbose mode... */
	sym_ok:
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		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;
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		expr_list_for_each_sym(prop->expr, e, choice_sym)
			if (choice_sym->visible != no)
				flags &= choice_sym->flags;
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		sym->flags &= flags | ~SYMBOL_DEF_USER;
	}

	for_all_symbols(i, sym) {
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		if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
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			/* 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)
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				sym->flags &= ~SYMBOL_DEF_USER;
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			switch (sym->type) {
			case S_STRING:
			case S_INT:
			case S_HEX:
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				/* 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;
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			default:
				break;
			}
		}
	}

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	sym_add_change_count(conf_warnings || conf_unsaved);
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	return 0;
}

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/* Write a S_STRING */
static void conf_write_string(bool headerfile, const char *name,
                              const char *str, FILE *out)
{
	int l;
	if (headerfile)
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		fprintf(out, "#define %s%s \"", CONFIG_, name);
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	else
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		fprintf(out, "%s%s=\"", CONFIG_, name);
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	while (1) {
		l = strcspn(str, "\"\\");
		if (l) {
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			xfwrite(str, l, 1, out);
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			str += l;
		}
		if (!*str)
			break;
		fprintf(out, "\\%c", *str++);
	}
	fputs("\"\n", out);
}

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static void conf_write_symbol(struct symbol *sym, FILE *out, bool write_no)
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{
	const char *str;

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	switch (sym->type) {
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	case S_BOOLEAN:
	case S_TRISTATE:
		switch (sym_get_tristate_value(sym)) {
		case no:
			if (write_no)
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				fprintf(out, "# %s%s is not set\n",
				    CONFIG_, sym->name);
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			break;
		case mod:
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			fprintf(out, "%s%s=m\n", CONFIG_, sym->name);
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			break;
		case yes:
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			fprintf(out, "%s%s=y\n", CONFIG_, sym->name);
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			break;
		}
		break;
	case S_STRING:
		conf_write_string(false, sym->name, sym_get_string_value(sym), out);
		break;
	case S_HEX:
	case S_INT:
		str = sym_get_string_value(sym);
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		fprintf(out, "%s%s=%s\n", CONFIG_, sym->name, str);
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		break;
	case S_OTHER:
	case S_UNKNOWN:
		break;
	}
}

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/*
 * Write out a minimal config.
 * All values that has default values are skipped as this is redundant.
 */
int conf_write_defconfig(const char *filename)
{
	struct symbol *sym;
	struct menu *menu;
	FILE *out;

	out = fopen(filename, "w");
	if (!out)
		return 1;

	sym_clear_all_valid();

	/* Traverse all menus to find all relevant symbols */
	menu = rootmenu.list;

	while (menu != NULL)
	{
		sym = menu->sym;
		if (sym == NULL) {
			if (!menu_is_visible(menu))
				goto next_menu;
		} else if (!sym_is_choice(sym)) {
			sym_calc_value(sym);
			if (!(sym->flags & SYMBOL_WRITE))
				goto next_menu;
			sym->flags &= ~SYMBOL_WRITE;
			/* If we cannot change the symbol - skip */
			if (!sym_is_changable(sym))
				goto next_menu;
			/* If symbol equals to default value - skip */
			if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
				goto next_menu;

			/*
			 * If symbol is a choice value and equals to the
			 * default for a choice - skip.
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			 * But only if value is bool and equal to "y" and
			 * choice is not "optional".
			 * (If choice is "optional" then all values can be "n")
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			 */
			if (sym_is_choice_value(sym)) {
				struct symbol *cs;
				struct symbol *ds;

				cs = prop_get_symbol(sym_get_choice_prop(sym));
				ds = sym_choice_default(cs);
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				if (!sym_is_optional(cs) && sym == ds) {
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					if ((sym->type == S_BOOLEAN) &&
					    sym_get_tristate_value(sym) == yes)
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						goto next_menu;
				}
			}
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			conf_write_symbol(sym, out, true);
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		}
next_menu:
		if (menu->list != NULL) {
			menu = menu->list;
		}
		else if (menu->next != NULL) {
			menu = menu->next;
		} else {
			while ((menu = menu->parent)) {
				if (menu->next != NULL) {
					menu = menu->next;
					break;
				}
			}
		}
	}
	fclose(out);
	return 0;
}

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int conf_write(const char *name)
{
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	FILE *out;
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	struct symbol *sym;
	struct menu *menu;
	const char *basename;
	const char *str;
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	char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
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	time_t now;
	int use_timestamp = 1;
	char *env;

	dirname[0] = 0;
	if (name && name[0]) {
		struct stat st;
		char *slash;

		if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
			strcpy(dirname, name);
			strcat(dirname, "/");
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			basename = conf_get_configname();
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		} else if ((slash = strrchr(name, '/'))) {
			int size = slash - name + 1;
			memcpy(dirname, name, size);
			dirname[size] = 0;
			if (slash[1])
				basename = slash + 1;
			else
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				basename = conf_get_configname();
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		} else
			basename = name;
	} else
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		basename = conf_get_configname();
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	sprintf(newname, "%s%s", dirname, basename);
	env = getenv("KCONFIG_OVERWRITECONFIG");
	if (!env || !*env) {
		sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
		out = fopen(tmpname, "w");
	} else {
		*tmpname = 0;
		out = fopen(newname, "w");
	}
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	if (!out)
		return 1;
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	time(&now);
	env = getenv("KCONFIG_NOTIMESTAMP");
	if (env && *env)
		use_timestamp = 0;

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	fprintf(out, _("#\n"
		       "# Automatically generated make config: don't edit\n"
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		       "# %s\n"
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		       "%s%s"
		       "#\n"),
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		     rootmenu.prompt->text,
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		     use_timestamp ? "# " : "",
		     use_timestamp ? ctime(&now) : "");

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	if (!conf_get_changed())
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		sym_clear_all_valid();

	menu = rootmenu.list;
	while (menu) {
		sym = menu->sym;
		if (!sym) {
			if (!menu_is_visible(menu))
				goto next;
			str = menu_get_prompt(menu);
			fprintf(out, "\n"
				     "#\n"
				     "# %s\n"
				     "#\n", str);
		} else if (!(sym->flags & SYMBOL_CHOICE)) {
			sym_calc_value(sym);
			if (!(sym->flags & SYMBOL_WRITE))
				goto next;
			sym->flags &= ~SYMBOL_WRITE;
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			/* Write config symbol to file */
635
			conf_write_symbol(sym, out, true);
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		}

638
next:
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		if (menu->list) {
			menu = menu->list;
			continue;
		}
		if (menu->next)
			menu = menu->next;
		else while ((menu = menu->parent)) {
			if (menu->next) {
				menu = menu->next;
				break;
			}
		}
	}
	fclose(out);
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	if (*tmpname) {
655
		strcat(dirname, basename);
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		strcat(dirname, ".old");
		rename(newname, dirname);
		if (rename(tmpname, newname))
			return 1;
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	}

662
	conf_message(_("configuration written to %s"), newname);
663

664
	sym_set_change_count(0);
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	return 0;
}
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static int conf_split_config(void)
670
{
671
	const char *name;
672
	char path[PATH_MAX+1];
673 674 675 676 677
	char *s, *d, c;
	struct symbol *sym;
	struct stat sb;
	int res, i, fd;

678
	name = conf_get_autoconfig_name();
679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780
	conf_read_simple(name, S_DEF_AUTO);

	if (chdir("include/config"))
		return 1;

	res = 0;
	for_all_symbols(i, sym) {
		sym_calc_value(sym);
		if ((sym->flags & SYMBOL_AUTO) || !sym->name)
			continue;
		if (sym->flags & SYMBOL_WRITE) {
			if (sym->flags & SYMBOL_DEF_AUTO) {
				/*
				 * symbol has old and new value,
				 * so compare them...
				 */
				switch (sym->type) {
				case S_BOOLEAN:
				case S_TRISTATE:
					if (sym_get_tristate_value(sym) ==
					    sym->def[S_DEF_AUTO].tri)
						continue;
					break;
				case S_STRING:
				case S_HEX:
				case S_INT:
					if (!strcmp(sym_get_string_value(sym),
						    sym->def[S_DEF_AUTO].val))
						continue;
					break;
				default:
					break;
				}
			} else {
				/*
				 * If there is no old value, only 'no' (unset)
				 * is allowed as new value.
				 */
				switch (sym->type) {
				case S_BOOLEAN:
				case S_TRISTATE:
					if (sym_get_tristate_value(sym) == no)
						continue;
					break;
				default:
					break;
				}
			}
		} else if (!(sym->flags & SYMBOL_DEF_AUTO))
			/* There is neither an old nor a new value. */
			continue;
		/* else
		 *	There is an old value, but no new value ('no' (unset)
		 *	isn't saved in auto.conf, so the old value is always
		 *	different from 'no').
		 */

		/* Replace all '_' and append ".h" */
		s = sym->name;
		d = path;
		while ((c = *s++)) {
			c = tolower(c);
			*d++ = (c == '_') ? '/' : c;
		}
		strcpy(d, ".h");

		/* Assume directory path already exists. */
		fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
		if (fd == -1) {
			if (errno != ENOENT) {
				res = 1;
				break;
			}
			/*
			 * Create directory components,
			 * unless they exist already.
			 */
			d = path;
			while ((d = strchr(d, '/'))) {
				*d = 0;
				if (stat(path, &sb) && mkdir(path, 0755)) {
					res = 1;
					goto out;
				}
				*d++ = '/';
			}
			/* Try it again. */
			fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
			if (fd == -1) {
				res = 1;
				break;
			}
		}
		close(fd);
	}
out:
	if (chdir("../.."))
		return 1;

	return res;
}

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int conf_write_autoconf(void)
{
	struct symbol *sym;
	const char *str;
785
	const char *name;
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	FILE *out, *tristate, *out_h;
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	time_t now;
788
	int i;
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790 791
	sym_clear_all_valid();

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	file_write_dep("include/config/auto.conf.cmd");

794 795 796
	if (conf_split_config())
		return 1;

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	out = fopen(".tmpconfig", "w");
	if (!out)
		return 1;

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	tristate = fopen(".tmpconfig_tristate", "w");
	if (!tristate) {
		fclose(out);
		return 1;
	}

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	out_h = fopen(".tmpconfig.h", "w");
	if (!out_h) {
		fclose(out);
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		fclose(tristate);
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		return 1;
	}

	time(&now);
	fprintf(out, "#\n"
		     "# Automatically generated make config: don't edit\n"
817
		     "# %s\n"
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		     "# %s"
		     "#\n",
820
		     rootmenu.prompt->text, ctime(&now));
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	fprintf(tristate, "#\n"
			  "# Automatically generated - do not edit\n"
			  "\n");
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	fprintf(out_h, "/*\n"
		       " * Automatically generated C config: don't edit\n"
826
		       " * %s\n"
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		       " * %s"
828
		       " */\n",
829
		       rootmenu.prompt->text, ctime(&now));
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	for_all_symbols(i, sym) {
		sym_calc_value(sym);
		if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
			continue;
835 836

		/* write symbol to config file */
837
		conf_write_symbol(sym, out, false);
838 839

		/* update autoconf and tristate files */
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		switch (sym->type) {
		case S_BOOLEAN:
		case S_TRISTATE:
			switch (sym_get_tristate_value(sym)) {
			case no:
				break;
			case mod:
847 848 849 850
				fprintf(tristate, "%s%s=M\n",
				    CONFIG_, sym->name);
				fprintf(out_h, "#define %s%s_MODULE 1\n",
				    CONFIG_, sym->name);
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				break;
			case yes:
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				if (sym->type == S_TRISTATE)
854 855 856 857
					fprintf(tristate,"%s%s=Y\n",
					    CONFIG_, sym->name);
				fprintf(out_h, "#define %s%s 1\n",
				    CONFIG_, sym->name);
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				break;
			}
			break;
		case S_STRING:
862
			conf_write_string(true, sym->name, sym_get_string_value(sym), out_h);
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			break;
		case S_HEX:
			str = sym_get_string_value(sym);
			if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
867 868
				fprintf(out_h, "#define %s%s 0x%s\n",
				    CONFIG_, sym->name, str);
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				break;
			}
		case S_INT:
			str = sym_get_string_value(sym);
873 874
			fprintf(out_h, "#define %s%s %s\n",
			    CONFIG_, sym->name, str);
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			break;
		default:
			break;
		}
	}
	fclose(out);
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	fclose(tristate);
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	fclose(out_h);

	name = getenv("KCONFIG_AUTOHEADER");
	if (!name)
886
		name = "include/generated/autoconf.h";
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	if (rename(".tmpconfig.h", name))
		return 1;
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	name = getenv("KCONFIG_TRISTATE");
	if (!name)
		name = "include/config/tristate.conf";
	if (rename(".tmpconfig_tristate", name))
		return 1;
894
	name = conf_get_autoconfig_name();
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	/*
	 * This must be the last step, kbuild has a dependency on auto.conf
	 * and this marks the successful completion of the previous steps.
	 */
	if (rename(".tmpconfig", name))
		return 1;

	return 0;
}
904

905
static int sym_change_count;
906
static void (*conf_changed_callback)(void);
907 908 909

void sym_set_change_count(int count)
{
910
	int _sym_change_count = sym_change_count;
911
	sym_change_count = count;
912 913 914
	if (conf_changed_callback &&
	    (bool)_sym_change_count != (bool)count)
		conf_changed_callback();
915 916 917 918
}

void sym_add_change_count(int count)
{
919
	sym_set_change_count(count + sym_change_count);
920 921
}

922 923 924 925
bool conf_get_changed(void)
{
	return sym_change_count;
}
926 927 928 929 930

void conf_set_changed_callback(void (*fn)(void))
{
	conf_changed_callback = fn;
}
931

932 933 934 935 936 937
static void randomize_choice_values(struct symbol *csym)
{
	struct property *prop;
	struct symbol *sym;
	struct expr *e;
	int cnt, def;
938

939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975
	/*
	 * If choice is mod then we may have more items slected
	 * and if no then no-one.
	 * In both cases stop.
	 */
	if (csym->curr.tri != yes)
		return;

	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);
}

static void set_all_choice_values(struct symbol *csym)
976 977
{
	struct property *prop;
978
	struct symbol *sym;
979
	struct expr *e;
980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998

	prop = sym_get_choice_prop(csym);

	/*
	 * Set all non-assinged choice values to no
	 */
	expr_list_for_each_sym(prop->expr, e, sym) {
		if (!sym_has_value(sym))
			sym->def[S_DEF_USER].tri = no;
	}
	csym->flags |= SYMBOL_DEF_USER;
	/* clear VALID to get value calculated */
	csym->flags &= ~(SYMBOL_VALID);
}

void conf_set_all_new_symbols(enum conf_def_mode mode)
{
	struct symbol *sym, *csym;
	int i, cnt;
999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016

	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:
1017 1018
				cnt = sym_get_type(sym) == S_TRISTATE ? 3 : 2;
				sym->def[S_DEF_USER].tri = (tristate)(rand() % cnt);
1019 1020 1021 1022
				break;
			default:
				continue;
			}
1023
			if (!(sym_is_choice(sym) && mode == def_random))
1024 1025 1026 1027 1028 1029 1030 1031
				sym->flags |= SYMBOL_DEF_USER;
			break;
		default:
			break;
		}

	}

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1032
	sym_clear_all_valid();
1033

1034 1035 1036 1037 1038 1039 1040 1041 1042
	/*
	 * 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.
	 */
1043 1044 1045 1046 1047
	for_all_symbols(i, csym) {
		if (sym_has_value(csym) || !sym_is_choice(csym))
			continue;

		sym_calc_value(csym);
1048 1049 1050 1051
		if (mode == def_random)
			randomize_choice_values(csym);
		else
			set_all_choice_values(csym);
1052 1053
	}
}