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 static void conf_warning(const char *fmt, ...)
18 __attribute__ ((format (printf, 1, 2)));
20 static const char *conf_filename;
21 static int conf_lineno, conf_warnings, conf_unsaved;
23 const char conf_def_filename[] = ".config";
25 const char conf_defname[] = "scripts/defconfig";
27 const char *conf_confnames[] = {
29 "/lib/modules/$UNAME_RELEASE/.config",
31 "/boot/config-$UNAME_RELEASE",
36 static void conf_warning(const char *fmt, ...)
40 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
41 vfprintf(stderr, fmt, ap);
42 fprintf(stderr, "\n");
47 static char *conf_expand_value(const char *in)
51 static char res_value[SYMBOL_MAXLENGTH];
52 char *dst, name[SYMBOL_MAXLENGTH];
56 while ((src = strchr(in, '$'))) {
57 strncat(res_value, in, src - in);
60 while (isalnum(*src) || *src == '_')
63 sym = sym_lookup(name, 0);
65 strcat(res_value, sym_get_string_value(sym));
68 strcat(res_value, in);
73 char *conf_get_default_confname(void)
76 static char fullname[PATH_MAX+1];
79 name = conf_expand_value(conf_defname);
80 env = getenv(SRCTREE);
82 sprintf(fullname, "%s/%s", env, name);
83 if (!stat(fullname, &buf))
89 int conf_read_simple(const char *name)
98 in = zconf_fopen(name);
100 const char **names = conf_confnames;
101 while ((name = *names++)) {
102 name = conf_expand_value(name);
103 in = zconf_fopen(name);
106 "# using defaults found in %s\n"
115 conf_filename = name;
120 for_all_symbols(i, sym) {
121 sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
122 if (sym_is_choice(sym))
123 sym->flags &= ~SYMBOL_NEW;
124 sym->flags &= ~SYMBOL_VALID;
132 sym->user.val = NULL;
137 while (fgets(line, sizeof(line), in)) {
142 if (memcmp(line + 2, "CONFIG_", 7))
144 p = strchr(line + 9, ' ');
148 if (strncmp(p, "is not set", 10))
150 sym = sym_find(line + 9);
152 conf_warning("trying to assign nonexistent symbol %s", line + 9);
154 } else if (!(sym->flags & SYMBOL_NEW)) {
155 conf_warning("trying to reassign symbol %s", sym->name);
162 sym->flags &= ~SYMBOL_NEW;
169 if (memcmp(line, "CONFIG_", 7)) {
170 conf_warning("unexpected data");
173 p = strchr(line + 7, '=');
177 p2 = strchr(p, '\n');
180 sym = sym_find(line + 7);
182 conf_warning("trying to assign nonexistent symbol %s", line + 7);
184 } else if (!(sym->flags & SYMBOL_NEW)) {
185 conf_warning("trying to reassign symbol %s", sym->name);
192 sym->flags &= ~SYMBOL_NEW;
198 sym->flags &= ~SYMBOL_NEW;
203 sym->flags &= ~SYMBOL_NEW;
206 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
211 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
216 memmove(p2, p2 + 1, strlen(p2));
219 conf_warning("invalid string found");
224 if (sym_string_valid(sym, p)) {
225 sym->user.val = strdup(p);
226 sym->flags &= ~SYMBOL_NEW;
228 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
239 conf_warning("unexpected data");
242 if (sym && sym_is_choice_value(sym)) {
243 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
244 switch (sym->user.tri) {
248 if (cs->user.tri == yes) {
249 conf_warning("%s creates inconsistent choice state", sym->name);
250 cs->flags |= SYMBOL_NEW;
254 if (cs->user.tri != no) {
255 conf_warning("%s creates inconsistent choice state", sym->name);
256 cs->flags |= SYMBOL_NEW;
261 cs->user.tri = E_OR(cs->user.tri, sym->user.tri);
267 sym_calc_value(modules_sym);
271 int conf_read(const char *name)
274 struct property *prop;
278 if (conf_read_simple(name))
281 for_all_symbols(i, sym) {
283 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
285 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
286 /* check that calculated value agrees with saved value */
290 if (sym->user.tri != sym_get_tristate_value(sym))
292 if (!sym_is_choice(sym))
295 if (!strcmp(sym->curr.val, sym->user.val))
299 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
300 /* no previous value and not saved */
303 /* maybe print value in verbose mode... */
305 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
306 if (sym->visible == no)
307 sym->flags |= SYMBOL_NEW;
312 if (!sym_string_within_range(sym, sym->user.val)) {
313 sym->flags |= SYMBOL_NEW;
314 sym->flags &= ~SYMBOL_VALID;
320 if (!sym_is_choice(sym))
322 prop = sym_get_choice_prop(sym);
323 for (e = prop->expr; e; e = e->left.expr)
324 if (e->right.sym->visible != no)
325 sym->flags |= e->right.sym->flags & SYMBOL_NEW;
328 sym_change_count = conf_warnings || conf_unsaved;
333 int conf_write(const char *name)
338 const char *basename;
339 char dirname[128], tmpname[128], newname[128];
343 int use_timestamp = 1;
347 if (name && name[0]) {
351 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
352 strcpy(dirname, name);
353 strcat(dirname, "/");
354 basename = conf_def_filename;
355 } else if ((slash = strrchr(name, '/'))) {
356 int size = slash - name + 1;
357 memcpy(dirname, name, size);
360 basename = slash + 1;
362 basename = conf_def_filename;
366 basename = conf_def_filename;
368 sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid());
369 out = fopen(newname, "w");
374 out_h = fopen(".tmpconfig.h", "w");
377 file_write_dep(NULL);
379 sym = sym_lookup("KERNELVERSION", 0);
382 env = getenv("KCONFIG_NOTIMESTAMP");
387 "# Automatically generated make config: don't edit\n"
388 "# Linux kernel version: %s\n"
391 sym_get_string_value(sym),
392 use_timestamp ? "# " : "",
393 use_timestamp ? ctime(&now) : "");
395 char buf[sizeof("#define AUTOCONF_TIMESTAMP "
396 "\"YYYY-MM-DD HH:MM:SS some_timezone\"\n")];
399 strftime(buf, sizeof(buf), "#define AUTOCONF_TIMESTAMP "
400 "\"%Y-%m-%d %H:%M:%S %Z\"\n", localtime(&now));
401 fprintf(out_h, "/*\n"
402 " * Automatically generated C config: don't edit\n"
403 " * Linux kernel version: %s\n"
406 "#define AUTOCONF_INCLUDED\n",
407 sym_get_string_value(sym),
410 if (!sym_change_count)
411 sym_clear_all_valid();
413 menu = rootmenu.list;
417 if (!menu_is_visible(menu))
419 str = menu_get_prompt(menu);
429 } else if (!(sym->flags & SYMBOL_CHOICE)) {
431 if (!(sym->flags & SYMBOL_WRITE))
433 sym->flags &= ~SYMBOL_WRITE;
435 if (type == S_TRISTATE) {
436 sym_calc_value(modules_sym);
437 if (modules_sym->curr.tri == no)
443 switch (sym_get_tristate_value(sym)) {
445 fprintf(out, "# CONFIG_%s is not set\n", sym->name);
447 fprintf(out_h, "#undef CONFIG_%s\n", sym->name);
449 fprintf(out_h, "#define ENABLE_%s 0\n", sym->name);
450 fprintf(out_h, "#define USE_%s(...)\n", sym->name);
451 fprintf(out_h, "#define SKIP_%s(...) __VA_ARGS__\n", sym->name);
455 fprintf(out, "CONFIG_%s=m\n", sym->name);
457 fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name);
460 fprintf(out, "CONFIG_%s=y\n", sym->name);
462 fprintf(out_h, "#define CONFIG_%s 1\n", sym->name);
464 fprintf(out_h, "#define ENABLE_%s 1\n", sym->name);
465 fprintf(out_h, "#define USE_%s(...) __VA_ARGS__\n", sym->name);
466 fprintf(out_h, "#define SKIP_%s(...)\n", sym->name);
473 str = sym_get_string_value(sym);
474 fprintf(out, "CONFIG_%s=\"", sym->name);
476 fprintf(out_h, "#define CONFIG_%s \"", sym->name);
478 l = strcspn(str, "\"\\");
480 fwrite(str, l, 1, out);
482 fwrite(str, l, 1, out_h);
485 while (*str == '\\' || *str == '"') {
486 fprintf(out, "\\%c", *str);
488 fprintf(out_h, "\\%c", *str);
494 fputs("\"\n", out_h);
496 fprintf(out_h, "#define ENABLE_%s 1\n", sym->name);
497 fprintf(out_h, "#define USE_%s(...) __VA_ARGS__\n", sym->name);
498 fprintf(out_h, "#define SKIP_%s(...)\n", sym->name);
502 str = sym_get_string_value(sym);
503 if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
504 fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
506 fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str);
508 fprintf(out_h, "#define ENABLE_%s 1\n", sym->name);
509 fprintf(out_h, "#define USE_%s(...) __VA_ARGS__\n", sym->name);
510 fprintf(out_h, "#define SKIP_%s(...)\n", sym->name);
515 str = sym_get_string_value(sym);
516 fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
518 fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str);
520 fprintf(out_h, "#define ENABLE_%s 1\n", sym->name);
521 fprintf(out_h, "#define USE_%s(...) __VA_ARGS__\n", sym->name);
522 fprintf(out_h, "#define SKIP_%s(...)\n", sym->name);
535 else while ((menu = menu->parent)) {
545 rename(".tmpconfig.h", "include/autoconf.h");
547 if (!name || basename != conf_def_filename) {
549 name = conf_def_filename;
550 sprintf(tmpname, "%s.old", name);
551 rename(name, tmpname);
553 sprintf(tmpname, "%s%s", dirname, basename);
554 if (rename(newname, tmpname))
557 sym_change_count = 0;