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(const char *name)
79 struct property *prop;
84 in = zconf_fopen(name);
86 const char **names = conf_confnames;
87 while ((name = *names++)) {
88 name = conf_expand_value(name);
89 in = zconf_fopen(name);
92 "# using defaults found in %s\n"
102 for_all_symbols(i, sym) {
103 sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
104 sym->flags &= ~SYMBOL_VALID;
112 sym->user.val = NULL;
117 while (fgets(line, sizeof(line), in)) {
122 if (memcmp(line + 2, "CONFIG_", 7))
124 p = strchr(line + 9, ' ');
128 if (strncmp(p, "is not set", 10))
130 sym = sym_find(line + 9);
132 fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 9);
139 sym->flags &= ~SYMBOL_NEW;
146 if (memcmp(line, "CONFIG_", 7))
148 p = strchr(line + 7, '=');
152 p2 = strchr(p, '\n');
155 sym = sym_find(line + 7);
157 fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 7);
164 sym->flags &= ~SYMBOL_NEW;
170 sym->flags &= ~SYMBOL_NEW;
175 sym->flags &= ~SYMBOL_NEW;
182 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
187 memmove(p2, p2 + 1, strlen(p2));
190 fprintf(stderr, "%s:%d: invalid string found\n", name, lineno);
195 if (sym_string_valid(sym, p)) {
196 sym->user.val = strdup(p);
197 sym->flags &= ~SYMBOL_NEW;
199 fprintf(stderr, "%s:%d: symbol value '%s' invalid for %s\n", name, lineno, p, sym->name);
212 if (sym && sym_is_choice_value(sym)) {
213 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
214 switch (sym->user.tri) {
218 if (cs->user.tri == yes)
222 if (cs->user.tri != no)
227 cs->user.tri = E_OR(cs->user.tri, sym->user.tri);
228 cs->flags &= ~SYMBOL_NEW;
234 sym_calc_value(modules_sym);
235 for_all_symbols(i, sym) {
237 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
238 if (sym->visible == no)
239 sym->flags |= SYMBOL_NEW;
244 if (!sym_string_within_range(sym, sym->user.val))
245 sym->flags |= SYMBOL_NEW;
250 if (!sym_is_choice(sym))
252 prop = sym_get_choice_prop(sym);
253 for (e = prop->expr; e; e = e->left.expr)
254 if (e->right.sym->visible != no)
255 sym->flags |= e->right.sym->flags & SYMBOL_NEW;
258 sym_change_count = 1;
263 int conf_write(const char *name)
268 const char *basename;
269 char dirname[128], tmpname[128], newname[128];
275 if (name && name[0]) {
279 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
280 strcpy(dirname, name);
281 strcat(dirname, "/");
282 basename = conf_def_filename;
283 } else if ((slash = strrchr(name, '/'))) {
284 int size = slash - name + 1;
285 memcpy(dirname, name, size);
288 basename = slash + 1;
290 basename = conf_def_filename;
294 basename = conf_def_filename;
296 sprintf(newname, "%s.tmpconfig.%d", dirname, getpid());
297 out = fopen(newname, "w");
302 out_h = fopen(".tmpconfig.h", "w");
306 sym = sym_lookup("KERNELRELEASE", 0);
310 "# Automatically generated make config: don't edit\n"
311 "# Linux kernel version: %s\n"
314 sym_get_string_value(sym),
317 fprintf(out_h, "/*\n"
318 " * Automatically generated C config: don't edit\n"
319 " * Linux kernel version: %s\n"
322 "#define AUTOCONF_INCLUDED\n",
323 sym_get_string_value(sym),
326 if (!sym_change_count)
327 sym_clear_all_valid();
329 menu = rootmenu.list;
333 if (!menu_is_visible(menu))
335 str = menu_get_prompt(menu);
345 } else if (!(sym->flags & SYMBOL_CHOICE)) {
347 if (!(sym->flags & SYMBOL_WRITE))
349 sym->flags &= ~SYMBOL_WRITE;
351 if (type == S_TRISTATE) {
352 sym_calc_value(modules_sym);
353 if (modules_sym->curr.tri == no)
359 switch (sym_get_tristate_value(sym)) {
361 fprintf(out, "# CONFIG_%s is not set\n", sym->name);
363 fprintf(out_h, "#undef CONFIG_%s\n", sym->name);
366 fprintf(out, "CONFIG_%s=m\n", sym->name);
368 fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name);
371 fprintf(out, "CONFIG_%s=y\n", sym->name);
373 fprintf(out_h, "#define CONFIG_%s 1\n", sym->name);
379 str = sym_get_string_value(sym);
380 fprintf(out, "CONFIG_%s=\"", sym->name);
382 fprintf(out_h, "#define CONFIG_%s \"", sym->name);
384 l = strcspn(str, "\"\\");
386 fwrite(str, l, 1, out);
388 fwrite(str, l, 1, out_h);
391 while (*str == '\\' || *str == '"') {
392 fprintf(out, "\\%c", *str);
394 fprintf(out_h, "\\%c", *str);
400 fputs("\"\n", out_h);
403 str = sym_get_string_value(sym);
404 if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
405 fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
407 fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str);
411 str = sym_get_string_value(sym);
412 fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
414 fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str);
426 else while ((menu = menu->parent)) {
436 rename(".tmpconfig.h", "include/linux/autoconf.h");
437 file_write_dep(NULL);
439 if (!name || basename != conf_def_filename) {
441 name = conf_def_filename;
442 sprintf(tmpname, "%s.old", name);
443 rename(name, tmpname);
445 sprintf(tmpname, "%s%s", dirname, basename);
446 if (rename(newname, tmpname))
449 sym_change_count = 0;