815 lines
17 KiB
C
815 lines
17 KiB
C
/*
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* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
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* Released under the terms of the GNU GPL v2.0.
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*/
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#include <sys/stat.h>
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#include <ctype.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include <unistd.h>
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#define LKC_DIRECT_LINK
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#include "lkc.h"
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static void conf_warning(const char *fmt, ...)
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__attribute__ ((format (printf, 1, 2)));
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static const char *conf_filename;
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static int conf_lineno, conf_warnings, conf_unsaved;
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const char conf_defname[] = "arch/$ARCH/defconfig";
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static void conf_warning(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
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vfprintf(stderr, fmt, ap);
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fprintf(stderr, "\n");
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va_end(ap);
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conf_warnings++;
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}
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const char *conf_get_configname(void)
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{
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char *name = getenv("KCONFIG_CONFIG");
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return name ? name : ".config";
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}
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static char *conf_expand_value(const char *in)
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{
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struct symbol *sym;
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const char *src;
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static char res_value[SYMBOL_MAXLENGTH];
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char *dst, name[SYMBOL_MAXLENGTH];
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res_value[0] = 0;
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dst = name;
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while ((src = strchr(in, '$'))) {
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strncat(res_value, in, src - in);
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src++;
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dst = name;
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while (isalnum(*src) || *src == '_')
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*dst++ = *src++;
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*dst = 0;
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sym = sym_lookup(name, 0);
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sym_calc_value(sym);
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strcat(res_value, sym_get_string_value(sym));
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in = src;
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}
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strcat(res_value, in);
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return res_value;
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}
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char *conf_get_default_confname(void)
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{
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struct stat buf;
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static char fullname[PATH_MAX+1];
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char *env, *name;
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name = conf_expand_value(conf_defname);
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env = getenv(SRCTREE);
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if (env) {
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sprintf(fullname, "%s/%s", env, name);
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if (!stat(fullname, &buf))
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return fullname;
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}
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return name;
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}
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static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
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{
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char *p2;
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switch (sym->type) {
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case S_TRISTATE:
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if (p[0] == 'm') {
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sym->def[def].tri = mod;
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sym->flags |= def_flags;
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break;
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}
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case S_BOOLEAN:
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if (p[0] == 'y') {
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sym->def[def].tri = yes;
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sym->flags |= def_flags;
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break;
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}
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if (p[0] == 'n') {
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sym->def[def].tri = no;
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sym->flags |= def_flags;
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break;
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}
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conf_warning("symbol value '%s' invalid for %s", p, sym->name);
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break;
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case S_OTHER:
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if (*p != '"') {
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for (p2 = p; *p2 && !isspace(*p2); p2++)
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;
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sym->type = S_STRING;
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goto done;
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}
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case S_STRING:
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if (*p++ != '"')
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break;
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for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
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if (*p2 == '"') {
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*p2 = 0;
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break;
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}
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memmove(p2, p2 + 1, strlen(p2));
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}
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if (!p2) {
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conf_warning("invalid string found");
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return 1;
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}
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case S_INT:
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case S_HEX:
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done:
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if (sym_string_valid(sym, p)) {
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sym->def[def].val = strdup(p);
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sym->flags |= def_flags;
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} else {
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conf_warning("symbol value '%s' invalid for %s", p, sym->name);
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return 1;
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}
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break;
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default:
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;
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}
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return 0;
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}
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int conf_read_simple(const char *name, int def)
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{
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FILE *in = NULL;
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char line[1024];
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char *p, *p2;
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struct symbol *sym;
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int i, def_flags;
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if (name) {
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in = zconf_fopen(name);
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} else {
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struct property *prop;
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name = conf_get_configname();
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in = zconf_fopen(name);
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if (in)
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goto load;
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sym_add_change_count(1);
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if (!sym_defconfig_list)
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return 1;
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for_all_defaults(sym_defconfig_list, prop) {
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if (expr_calc_value(prop->visible.expr) == no ||
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prop->expr->type != E_SYMBOL)
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continue;
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name = conf_expand_value(prop->expr->left.sym->name);
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in = zconf_fopen(name);
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if (in) {
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printf(_("#\n"
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"# using defaults found in %s\n"
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"#\n"), name);
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goto load;
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}
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}
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}
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if (!in)
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return 1;
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load:
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conf_filename = name;
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conf_lineno = 0;
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conf_warnings = 0;
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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;
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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) {
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case S_INT:
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case S_HEX:
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case S_STRING:
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if (sym->def[def].val)
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free(sym->def[def].val);
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default:
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sym->def[def].val = NULL;
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sym->def[def].tri = no;
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}
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}
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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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switch (line[0]) {
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case '#':
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if (memcmp(line + 2, "CONFIG_", 7))
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continue;
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p = strchr(line + 9, ' ');
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if (!p)
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continue;
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*p++ = 0;
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if (strncmp(p, "is not set", 10))
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continue;
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if (def == S_DEF_USER) {
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sym = sym_find(line + 9);
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if (!sym) {
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conf_warning("trying to assign nonexistent symbol %s", line + 9);
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break;
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}
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} else {
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sym = sym_lookup(line + 9, 0);
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if (sym->type == S_UNKNOWN)
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sym->type = S_BOOLEAN;
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}
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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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switch (sym->type) {
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case S_BOOLEAN:
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case S_TRISTATE:
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sym->def[def].tri = no;
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sym->flags |= def_flags;
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break;
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default:
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;
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}
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break;
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case 'C':
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if (memcmp(line, "CONFIG_", 7)) {
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conf_warning("unexpected data");
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continue;
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}
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p = strchr(line + 7, '=');
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if (!p)
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continue;
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*p++ = 0;
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p2 = strchr(p, '\n');
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if (p2) {
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*p2-- = 0;
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if (*p2 == '\r')
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*p2 = 0;
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}
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if (def == S_DEF_USER) {
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sym = sym_find(line + 7);
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if (!sym) {
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conf_warning("trying to assign nonexistent symbol %s", line + 7);
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break;
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}
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} else {
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sym = sym_lookup(line + 7, 0);
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if (sym->type == S_UNKNOWN)
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sym->type = S_OTHER;
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}
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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))
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continue;
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break;
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case '\r':
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case '\n':
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break;
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default:
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conf_warning("unexpected data");
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continue;
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}
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if (sym && sym_is_choice_value(sym)) {
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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:
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break;
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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;
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case yes:
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if (cs->def[def].tri != no)
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conf_warning("override: %s changes choice state", sym->name);
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cs->def[def].val = sym;
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break;
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}
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cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
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}
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}
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fclose(in);
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if (modules_sym)
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sym_calc_value(modules_sym);
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return 0;
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}
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int conf_read(const char *name)
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{
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struct symbol *sym, *choice_sym;
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struct property *prop;
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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) {
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sym_calc_value(sym);
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if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
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goto sym_ok;
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if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
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/* check that calculated value agrees with saved value */
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switch (sym->type) {
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case S_BOOLEAN:
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case S_TRISTATE:
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if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
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break;
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if (!sym_is_choice(sym))
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goto sym_ok;
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default:
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if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
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goto sym_ok;
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break;
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}
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} else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
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/* no previous value and not saved */
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goto sym_ok;
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conf_unsaved++;
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/* maybe print value in verbose mode... */
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sym_ok:
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if (!sym_is_choice(sym))
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continue;
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/* The choice symbol only has a set value (and thus is not new)
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* if all its visible childs have values.
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*/
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prop = sym_get_choice_prop(sym);
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flags = sym->flags;
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expr_list_for_each_sym(prop->expr, e, choice_sym)
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if (choice_sym->visible != no)
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flags &= choice_sym->flags;
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sym->flags &= flags | ~SYMBOL_DEF_USER;
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}
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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
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* as new, if they should become visible, but that
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* doesn't quite work if the Kconfig and the saved
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* configuration disagree.
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*/
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if (sym->visible == no && !conf_unsaved)
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sym->flags &= ~SYMBOL_DEF_USER;
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switch (sym->type) {
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case S_STRING:
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case S_INT:
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case S_HEX:
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/* Reset a string value if it's out of range */
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if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
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break;
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sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
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conf_unsaved++;
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break;
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default:
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break;
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}
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}
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}
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sym_add_change_count(conf_warnings || conf_unsaved);
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return 0;
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}
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int conf_write(const char *name)
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{
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FILE *out;
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struct symbol *sym;
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struct menu *menu;
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const char *basename;
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char dirname[128], tmpname[128], newname[128];
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int type, l;
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const char *str;
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time_t now;
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int use_timestamp = 1;
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char *env;
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dirname[0] = 0;
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if (name && name[0]) {
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struct stat st;
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char *slash;
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if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
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strcpy(dirname, name);
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strcat(dirname, "/");
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basename = conf_get_configname();
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} else if ((slash = strrchr(name, '/'))) {
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int size = slash - name + 1;
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memcpy(dirname, name, size);
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dirname[size] = 0;
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if (slash[1])
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basename = slash + 1;
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else
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basename = conf_get_configname();
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} else
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basename = name;
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} else
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basename = conf_get_configname();
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sprintf(newname, "%s%s", dirname, basename);
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env = getenv("KCONFIG_OVERWRITECONFIG");
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if (!env || !*env) {
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sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
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out = fopen(tmpname, "w");
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} else {
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*tmpname = 0;
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out = fopen(newname, "w");
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}
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if (!out)
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return 1;
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|
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sym = sym_lookup("KERNELVERSION", 0);
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sym_calc_value(sym);
|
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time(&now);
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env = getenv("KCONFIG_NOTIMESTAMP");
|
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if (env && *env)
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use_timestamp = 0;
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|
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fprintf(out, _("#\n"
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"# Automatically generated make config: don't edit\n"
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"# coreinfo version: %s\n"
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"%s%s"
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"#\n"),
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getenv("KERNELVERSION"),
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use_timestamp ? "# " : "",
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use_timestamp ? ctime(&now) : "");
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|
|
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if (!conf_get_changed())
|
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sym_clear_all_valid();
|
|
|
|
menu = rootmenu.list;
|
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while (menu) {
|
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sym = menu->sym;
|
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if (!sym) {
|
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if (!menu_is_visible(menu))
|
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goto next;
|
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str = menu_get_prompt(menu);
|
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fprintf(out, "\n"
|
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"#\n"
|
|
"# %s\n"
|
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"#\n", str);
|
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} else if (!(sym->flags & SYMBOL_CHOICE)) {
|
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sym_calc_value(sym);
|
|
if (!(sym->flags & SYMBOL_WRITE))
|
|
goto next;
|
|
sym->flags &= ~SYMBOL_WRITE;
|
|
type = sym->type;
|
|
if (type == S_TRISTATE) {
|
|
sym_calc_value(modules_sym);
|
|
if (modules_sym->curr.tri == no)
|
|
type = S_BOOLEAN;
|
|
}
|
|
switch (type) {
|
|
case S_BOOLEAN:
|
|
case S_TRISTATE:
|
|
switch (sym_get_tristate_value(sym)) {
|
|
case no:
|
|
fprintf(out, "# CONFIG_%s is not set\n", sym->name);
|
|
break;
|
|
case mod:
|
|
fprintf(out, "CONFIG_%s=m\n", sym->name);
|
|
break;
|
|
case yes:
|
|
fprintf(out, "CONFIG_%s=y\n", sym->name);
|
|
break;
|
|
}
|
|
break;
|
|
case S_STRING:
|
|
str = sym_get_string_value(sym);
|
|
fprintf(out, "CONFIG_%s=\"", sym->name);
|
|
while (1) {
|
|
l = strcspn(str, "\"\\");
|
|
if (l) {
|
|
fwrite(str, l, 1, out);
|
|
str += l;
|
|
}
|
|
if (!*str)
|
|
break;
|
|
fprintf(out, "\\%c", *str++);
|
|
}
|
|
fputs("\"\n", out);
|
|
break;
|
|
case S_HEX:
|
|
str = sym_get_string_value(sym);
|
|
if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
|
|
fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
|
|
break;
|
|
}
|
|
case S_INT:
|
|
str = sym_get_string_value(sym);
|
|
fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
|
|
break;
|
|
}
|
|
}
|
|
|
|
next:
|
|
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);
|
|
|
|
if (*tmpname) {
|
|
strcat(dirname, basename);
|
|
strcat(dirname, ".old");
|
|
rename(newname, dirname);
|
|
if (rename(tmpname, newname))
|
|
return 1;
|
|
}
|
|
|
|
printf(_("#\n"
|
|
"# configuration written to %s\n"
|
|
"#\n"), newname);
|
|
|
|
sym_set_change_count(0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int conf_split_config(void)
|
|
{
|
|
char *name, 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";
|
|
conf_read_simple(name, S_DEF_AUTO);
|
|
|
|
if (chdir("build"))
|
|
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;
|
|
}
|
|
|
|
int conf_write_autoconf(void)
|
|
{
|
|
struct symbol *sym;
|
|
const char *str;
|
|
char *name;
|
|
FILE *out, *out_h;
|
|
time_t now;
|
|
int i, l;
|
|
|
|
sym_clear_all_valid();
|
|
|
|
file_write_dep("build/auto.conf.cmd");
|
|
|
|
if (conf_split_config())
|
|
return 1;
|
|
|
|
out = fopen(".tmpconfig", "w");
|
|
if (!out)
|
|
return 1;
|
|
|
|
out_h = fopen(".tmpconfig.h", "w");
|
|
if (!out_h) {
|
|
fclose(out);
|
|
return 1;
|
|
}
|
|
|
|
sym = sym_lookup("KERNELVERSION", 0);
|
|
sym_calc_value(sym);
|
|
time(&now);
|
|
fprintf(out, "#\n"
|
|
"# Automatically generated make config: don't edit\n"
|
|
"# coreinfo version: %s\n"
|
|
"# %s"
|
|
"#\n",
|
|
getenv("KERNELVERSION"), ctime(&now));
|
|
fprintf(out_h, "/*\n"
|
|
" * Automatically generated C config: don't edit\n"
|
|
" * coreinfo version: %s\n"
|
|
" * %s"
|
|
" */\n"
|
|
"#define AUTOCONF_INCLUDED\n",
|
|
getenv("KERNELVERSION"), ctime(&now));
|
|
|
|
for_all_symbols(i, sym) {
|
|
sym_calc_value(sym);
|
|
if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
|
|
continue;
|
|
switch (sym->type) {
|
|
case S_BOOLEAN:
|
|
case S_TRISTATE:
|
|
switch (sym_get_tristate_value(sym)) {
|
|
case no:
|
|
break;
|
|
case mod:
|
|
fprintf(out, "CONFIG_%s=m\n", sym->name);
|
|
fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name);
|
|
break;
|
|
case yes:
|
|
fprintf(out, "CONFIG_%s=y\n", sym->name);
|
|
fprintf(out_h, "#define CONFIG_%s 1\n", sym->name);
|
|
break;
|
|
}
|
|
break;
|
|
case S_STRING:
|
|
str = sym_get_string_value(sym);
|
|
fprintf(out, "CONFIG_%s=\"", sym->name);
|
|
fprintf(out_h, "#define CONFIG_%s \"", sym->name);
|
|
while (1) {
|
|
l = strcspn(str, "\"\\");
|
|
if (l) {
|
|
fwrite(str, l, 1, out);
|
|
fwrite(str, l, 1, out_h);
|
|
str += l;
|
|
}
|
|
if (!*str)
|
|
break;
|
|
fprintf(out, "\\%c", *str);
|
|
fprintf(out_h, "\\%c", *str);
|
|
str++;
|
|
}
|
|
fputs("\"\n", out);
|
|
fputs("\"\n", out_h);
|
|
break;
|
|
case S_HEX:
|
|
str = sym_get_string_value(sym);
|
|
if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
|
|
fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
|
|
fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str);
|
|
break;
|
|
}
|
|
case S_INT:
|
|
str = sym_get_string_value(sym);
|
|
fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
|
|
fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str);
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
fclose(out);
|
|
fclose(out_h);
|
|
|
|
name = getenv("KCONFIG_AUTOHEADER");
|
|
if (!name)
|
|
name = "include/linux/autoconf.h";
|
|
if (rename(".tmpconfig.h", name))
|
|
return 1;
|
|
name = getenv("KCONFIG_AUTOCONFIG");
|
|
if (!name)
|
|
name = "include/config/auto.conf";
|
|
/*
|
|
* 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;
|
|
}
|
|
|
|
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;
|
|
}
|