2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
13 #define LKC_DIRECT_LINK
16 const char conf_def_filename[] = ".config";
18 const char conf_defname[] = "defconfig";
20 const char *conf_confnames[] = {
26 static char *conf_expand_value(const char *in)
30 static char res_value[SYMBOL_MAXLENGTH];
31 char *dst, name[SYMBOL_MAXLENGTH];
35 while ((src = strchr(in, '$'))) {
36 strncat(res_value, in, src - in);
39 while (isalnum(*src) || *src == '_')
42 sym = sym_lookup(name, 0);
44 strcat(res_value, sym_get_string_value(sym));
47 strcat(res_value, in);
52 char *conf_get_default_confname(void)
55 static char fullname[PATH_MAX+1];
58 name = conf_expand_value(conf_defname);
59 env = getenv(SRCTREE);
61 sprintf(fullname, "%s/%s", env, name);
62 if (!stat(fullname, &buf))
68 int conf_read(const char *name)
75 struct property *prop;
80 in = zconf_fopen(name);
82 const char **names = conf_confnames;
83 while ((name = *names++)) {
84 name = conf_expand_value(name);
85 in = zconf_fopen(name);
88 "# using defaults found in %s\n"
98 for_all_symbols(i, sym) {
99 sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
100 sym->flags &= ~SYMBOL_VALID;
107 sym->user.val = NULL;
112 while (fgets(line, sizeof(line), in)) {
119 p = strchr(line + 2, ' ');
123 if (strncmp(p, "is not set", 10))
125 sym = sym_find(line + 2);
127 fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 2);
134 sym->flags &= ~SYMBOL_NEW;
142 p = strchr(line, '=');
146 p2 = strchr(p, '\n');
149 sym = sym_find(line);
151 fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line);
158 sym->flags &= ~SYMBOL_NEW;
164 sym->flags &= ~SYMBOL_NEW;
169 sym->flags &= ~SYMBOL_NEW;
176 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
181 memmove(p2, p2 + 1, strlen(p2));
184 fprintf(stderr, "%s:%d: invalid string found\n", name, lineno);
189 if (sym_string_valid(sym, p)) {
190 sym->user.val = strdup(p);
191 sym->flags &= ~SYMBOL_NEW;
193 fprintf(stderr, "%s:%d: symbol value '%s' invalid for %s\n", name, lineno, p, sym->name);
206 if (sym && sym_is_choice_value(sym)) {
207 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
208 switch (sym->user.tri) {
212 if (cs->user.tri == yes)
216 if (cs->user.tri != no)
221 cs->user.tri = E_OR(cs->user.tri, sym->user.tri);
222 cs->flags &= ~SYMBOL_NEW;
228 sym_calc_value(modules_sym);
229 for_all_symbols(i, sym) {
231 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
232 if (sym->visible == no)
233 sym->flags |= SYMBOL_NEW;
238 if (!sym_string_within_range(sym, sym->user.val))
239 sym->flags |= SYMBOL_NEW;
244 if (!sym_is_choice(sym))
246 prop = sym_get_choice_prop(sym);
247 for (e = prop->expr; e; e = e->left.expr)
248 if (e->right.sym->visible != no)
249 sym->flags |= e->right.sym->flags & SYMBOL_NEW;
252 sym_change_count = 1;
257 struct menu *next_menu(struct menu *menu)
259 if (menu->list) return menu->list;
265 } while ((menu = menu->parent));
270 #define SYMBOL_FORCEWRITE (1<<31)
272 int conf_write(const char *name)
277 const char *basename;
278 char dirname[128], tmpname[128], newname[128];
283 const char *opt_name;
287 if (name && name[0]) {
291 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
292 strcpy(dirname, name);
293 strcat(dirname, "/");
294 basename = conf_def_filename;
295 } else if ((slash = strrchr(name, '/'))) {
296 int size = slash - name + 1;
297 memcpy(dirname, name, size);
300 basename = slash + 1;
302 basename = conf_def_filename;
306 basename = conf_def_filename;
308 sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid());
309 out = fopen(newname, "w");
314 out_h = fopen(".tmpconfig.h", "w");
319 "# Automatically generated make config: don't edit\n"
324 fprintf(out_h, "#ifndef BB_CONFIG_H\n#define BB_CONFIG_H\n");
325 fprintf(out_h, "/*\n"
326 " * Automatically generated header file: don't edit\n"
328 "/* Version Number */\n"
329 "#define BB_VER \"%s\"\n"
330 "#define BB_BT \"%s\"\n",
332 getenv("BUILDTIME"));
333 if (getenv("EXTRA_VERSION"))
334 fprintf(out_h, "#define BB_EXTRA_VERSION \"%s\"\n",
335 getenv("EXTRA_VERSION"));
336 fprintf(out_h, "\n");
338 /* end busybox`s code */
340 if (!sym_change_count)
341 sym_clear_all_valid();
343 /* Force write of all non-duplicate symbols. */
345 /* Write out everything by default. */
346 for(menu = rootmenu.list; menu; menu = next_menu(menu))
347 if (menu->sym) menu->sym->flags |= SYMBOL_FORCEWRITE;
349 menu = rootmenu.list;
353 if (!menu_is_visible(menu))
355 str = menu_get_prompt(menu);
365 } else if (!(sym->flags & SYMBOL_CHOICE)) {
367 if (!(sym->flags & SYMBOL_FORCEWRITE))
370 sym->flags &= ~SYMBOL_FORCEWRITE;
372 if (type == S_TRISTATE) {
373 sym_calc_value(modules_sym);
374 if (modules_sym->curr.tri == no)
379 opt_name = strchr(sym->name, '_');
381 opt_name = sym->name;
385 /* end busybox`s code */
390 switch (sym_get_tristate_value(sym)) {
392 fprintf(out, "# %s is not set\n", sym->name);
394 fprintf(out_h, "#undef %s\n", sym->name);
395 use_flg = 0; /* busybox`s code */
398 #if 0 /* busybox`s code */
399 fprintf(out, "%s=m\n", sym->name);
401 fprintf(out_h, "#define %s_MODULE 1\n", sym->name);
402 #endif /* busybox`s code */
405 fprintf(out, "%s=y\n", sym->name);
407 fprintf(out_h, "#define %s 1\n", sym->name);
413 str = sym_get_string_value(sym);
414 fprintf(out, "%s=\"", sym->name);
416 fprintf(out_h, "#define %s \"", sym->name);
418 l = strcspn(str, "\"\\");
420 fwrite(str, l, 1, out);
422 fwrite(str, l, 1, out_h);
425 while (*str == '\\' || *str == '"') {
426 fprintf(out, "\\%c", *str);
428 fprintf(out_h, "\\%c", *str);
434 fputs("\"\n", out_h);
437 str = sym_get_string_value(sym);
438 if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
439 fprintf(out, "%s=%s\n", sym->name, *str ? str : "0");
441 fprintf(out_h, "#define %s 0x%s\n", sym->name, str);
445 str = sym_get_string_value(sym);
446 fprintf(out, "%s=%s\n", sym->name, *str ? str : "0");
448 fprintf(out_h, "#define %s %s\n", sym->name, str);
453 fprintf(out_h, "#define ENABLE_%s %d\n", opt_name, use_flg);
454 fprintf(out_h, "#define USE_%s(...)%s\n", opt_name,
455 (use_flg ? " __VA_ARGS__" : ""));
456 fprintf(out_h, "#define SKIP_%s(...)%s\n\n", opt_name,
457 (use_flg ? "" : " __VA_ARGS__"));
459 /* end busybox`s code */
462 menu = next_menu(menu);
466 fprintf(out_h, "#endif /* BB_CONFIG_H */\n"); /* busybox`s code */
468 rename(".tmpconfig.h", "include/bb_config.h"); /* busybox`s config name */
469 file_write_dep(NULL);
471 if (!name || basename != conf_def_filename) {
473 name = conf_def_filename;
474 sprintf(tmpname, "%s.old", name);
475 rename(name, tmpname);
477 sprintf(tmpname, "%s%s", dirname, basename);
478 if (rename(newname, tmpname))
481 sym_change_count = 0;