2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
14 #define LKC_DIRECT_LINK
17 const char conf_def_filename[] = ".config";
19 const char conf_defname[] = "arch/$ARCH/defconfig";
21 const char *conf_confnames[] = {
23 "/lib/modules/$UNAME_RELEASE/.config",
25 "/boot/config-$UNAME_RELEASE",
30 static char *conf_expand_value(const char *in)
34 static char res_value[SYMBOL_MAXLENGTH];
35 char *dst, name[SYMBOL_MAXLENGTH];
39 while ((src = strchr(in, '$'))) {
40 strncat(res_value, in, src - in);
43 while (isalnum(*src) || *src == '_')
46 sym = sym_lookup(name, 0);
48 strcat(res_value, sym_get_string_value(sym));
51 strcat(res_value, in);
56 char *conf_get_default_confname(void)
59 static char fullname[PATH_MAX+1];
62 name = conf_expand_value(conf_defname);
63 env = getenv(SRCTREE);
65 sprintf(fullname, "%s/%s", env, name);
66 if (!stat(fullname, &buf))
72 int conf_read_simple(const char *name)
82 in = zconf_fopen(name);
84 const char **names = conf_confnames;
85 while ((name = *names++)) {
86 name = conf_expand_value(name);
87 in = zconf_fopen(name);
90 "# using defaults found in %s\n"
100 for_all_symbols(i, sym) {
101 sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
102 sym->flags &= ~SYMBOL_VALID;
110 sym->user.val = NULL;
115 while (fgets(line, sizeof(line), in)) {
120 if (memcmp(line + 2, "CONFIG_", 7))
122 p = strchr(line + 9, ' ');
126 if (strncmp(p, "is not set", 10))
128 sym = sym_find(line + 9);
130 fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 9);
137 sym->flags &= ~SYMBOL_NEW;
144 if (memcmp(line, "CONFIG_", 7))
146 p = strchr(line + 7, '=');
150 p2 = strchr(p, '\n');
153 sym = sym_find(line + 7);
155 fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 7);
162 sym->flags &= ~SYMBOL_NEW;
168 sym->flags &= ~SYMBOL_NEW;
173 sym->flags &= ~SYMBOL_NEW;
180 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
185 memmove(p2, p2 + 1, strlen(p2));
188 fprintf(stderr, "%s:%d: invalid string found\n", name, lineno);
193 if (sym_string_valid(sym, p)) {
194 sym->user.val = strdup(p);
195 sym->flags &= ~SYMBOL_NEW;
197 fprintf(stderr, "%s:%d: symbol value '%s' invalid for %s\n", name, lineno, p, sym->name);
210 if (sym && sym_is_choice_value(sym)) {
211 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
212 switch (sym->user.tri) {
216 if (cs->user.tri == yes)
220 if (cs->user.tri != no)
225 cs->user.tri = E_OR(cs->user.tri, sym->user.tri);
226 cs->flags &= ~SYMBOL_NEW;
232 sym_calc_value(modules_sym);
236 int conf_read(const char *name)
239 struct property *prop;
243 if (conf_read_simple(name))
246 for_all_symbols(i, sym) {
248 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
249 if (sym->visible == no)
250 sym->flags |= SYMBOL_NEW;
255 if (!sym_string_within_range(sym, sym->user.val))
256 sym->flags |= SYMBOL_NEW;
261 if (!sym_is_choice(sym))
263 prop = sym_get_choice_prop(sym);
264 for (e = prop->expr; e; e = e->left.expr)
265 if (e->right.sym->visible != no)
266 sym->flags |= e->right.sym->flags & SYMBOL_NEW;
269 sym_change_count = 1;
274 int conf_write(const char *name)
279 const char *basename;
280 char dirname[128], tmpname[128], newname[128];
284 int use_timestamp = 1;
288 if (name && name[0]) {
292 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
293 strcpy(dirname, name);
294 strcat(dirname, "/");
295 basename = conf_def_filename;
296 } else if ((slash = strrchr(name, '/'))) {
297 int size = slash - name + 1;
298 memcpy(dirname, name, size);
301 basename = slash + 1;
303 basename = conf_def_filename;
307 basename = conf_def_filename;
309 sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid());
310 out = fopen(newname, "w");
315 out_h = fopen(".tmpconfig.h", "w");
319 sym = sym_lookup("KERNELRELEASE", 0);
322 env = getenv("KCONFIG_NOTIMESTAMP");
327 "# Automatically generated make config: don't edit\n"
328 "# Linux kernel version: %s\n"
331 sym_get_string_value(sym),
332 use_timestamp ? "# " : "",
333 use_timestamp ? ctime(&now) : "");
335 fprintf(out_h, "/*\n"
336 " * Automatically generated C config: don't edit\n"
337 " * Linux kernel version: %s\n"
340 "#define AUTOCONF_INCLUDED\n",
341 sym_get_string_value(sym),
342 use_timestamp ? " * " : "",
343 use_timestamp ? ctime(&now) : "");
345 if (!sym_change_count)
346 sym_clear_all_valid();
348 menu = rootmenu.list;
352 if (!menu_is_visible(menu))
354 str = menu_get_prompt(menu);
364 } else if (!(sym->flags & SYMBOL_CHOICE)) {
366 if (!(sym->flags & SYMBOL_WRITE))
368 sym->flags &= ~SYMBOL_WRITE;
370 if (type == S_TRISTATE) {
371 sym_calc_value(modules_sym);
372 if (modules_sym->curr.tri == no)
378 switch (sym_get_tristate_value(sym)) {
380 fprintf(out, "# CONFIG_%s is not set\n", sym->name);
382 fprintf(out_h, "#undef CONFIG_%s\n", sym->name);
385 fprintf(out, "CONFIG_%s=m\n", sym->name);
387 fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name);
390 fprintf(out, "CONFIG_%s=y\n", sym->name);
392 fprintf(out_h, "#define CONFIG_%s 1\n", sym->name);
398 str = sym_get_string_value(sym);
399 fprintf(out, "CONFIG_%s=\"", sym->name);
401 fprintf(out_h, "#define CONFIG_%s \"", sym->name);
403 l = strcspn(str, "\"\\");
405 fwrite(str, l, 1, out);
407 fwrite(str, l, 1, out_h);
410 while (*str == '\\' || *str == '"') {
411 fprintf(out, "\\%c", *str);
413 fprintf(out_h, "\\%c", *str);
419 fputs("\"\n", out_h);
422 str = sym_get_string_value(sym);
423 if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
424 fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
426 fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str);
430 str = sym_get_string_value(sym);
431 fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
433 fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str);
445 else while ((menu = menu->parent)) {
455 rename(".tmpconfig.h", "include/linux/autoconf.h");
456 file_write_dep(NULL);
458 if (!name || basename != conf_def_filename) {
460 name = conf_def_filename;
461 sprintf(tmpname, "%s.old", name);
462 rename(name, tmpname);
464 sprintf(tmpname, "%s%s", dirname, basename);
465 if (rename(newname, tmpname))
468 sym_change_count = 0;