/*
* 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>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#define LKC_DIRECT_LINK
#include "lkc.h"
static void conf_warning(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
static const char *conf_filename;
static int conf_lineno, conf_warnings, conf_unsaved;
const char conf_defname[] = "arch/$ARCH/defconfig";
static void conf_warning(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
va_end(ap);
conf_warnings++;
}
const char *conf_get_configname(void)
{
char *name = getenv("KCONFIG_CONFIG");
return name ? name : ".config";
}
static char *conf_expand_value(const char *in)
{
struct symbol *sym;
const char *src;
static char res_value[SYMBOL_MAXLENGTH];
char *dst, name[SYMBOL_MAXLENGTH];
res_value[0] = 0;
dst = name;
while ((src = strchr(in, '$'))) {
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;
}
int conf_read_simple(const char *name, int def)
{
FILE *in = NULL;
char line[1024];
char *p, *p2;
struct symbol *sym;
int i, def_flags;
if (name) {
in = zconf_fopen(name);
} else {
struct property *prop;
name = conf_get_configname();
in = zconf_fopen(name);
if (in)
goto load;
sym_change_count++;
if (!sym_defconfig_list)
return 1;
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);
in = zconf_fopen(name);
if (in) {
printf(_("#\n"
"# using defaults found in %s\n"
"#\n"), name);
goto load;
}
}
}
if (!in)
return 1;
load:
conf_filename = name;
conf_lineno = 0;
conf_warnings = 0;
conf_unsaved = 0;
def_flags = SYMBOL_DEF << def;
for_all_symbols(i, sym) {
sym->flags |= SYMBOL_CHANGED;
sym->flags &= ~(def_flags|SYMBOL_VALID);
if (sym_is_choice(sym))
sym->flags |= def_flags;
switch (sym->type) {
case S_INT:
case S_HEX:
case S_STRING:
if (sym->def[def].val)
free(sym->def[def].val);
default:
sym->def[def].val = NULL;
sym->def[def].tri = no;
}
}
while (fgets(line, sizeof(line), in)) {
conf_lineno++;
sym = NULL;
switch (line[0]) {
case '#':
if (memcmp(line + 2, "CONFIG_", 7))
continue;
p = strchr(line + 9, ' ');
if (!p)
continue;
*p++ = 0;
if (strncmp(p, "is not set", 10))
continue;
if (def == S_DEF_USER) {
sym = sym_find(line + 9);
if (!sym) {
conf_warning("trying to assign nonexistent symbol %s", line + 9);
break;
}
} else {
sym = sym_lookup(line + 9, 0);
if (sym->type == S_UNKNOWN)
sym->type = S_BOOLEAN;
}
if (sym->flags & def_flags) {
conf_warning("trying to reassign symbol %s", sym->name