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[] = "/dev/null"; //bbox
27 const char *conf_confnames[] = {
33 static void conf_warning(const char *fmt, ...)
37 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
38 vfprintf(stderr, fmt, ap);
39 fprintf(stderr, "\n");
44 static char *conf_expand_value(const char *in)
48 static char res_value[SYMBOL_MAXLENGTH];
49 char *dst, name[SYMBOL_MAXLENGTH];
53 while ((src = strchr(in, '$'))) {
54 strncat(res_value, in, src - in);
57 while (isalnum(*src) || *src == '_')
60 sym = sym_lookup(name, 0);
62 strcat(res_value, sym_get_string_value(sym));
65 strcat(res_value, in);
70 char *conf_get_default_confname(void)
73 static char *fullname = NULL;
76 name = conf_expand_value(conf_defname);
77 env = getenv(SRCTREE);
79 fullname = realloc(fullname, strlen(env) + strlen(name) + 2);
80 sprintf(fullname, "%s/%s", env, name);
81 if (!stat(fullname, &buf))
87 int conf_read_simple(const char *name)
96 in = zconf_fopen(name);
98 const char **names = conf_confnames;
99 while ((name = *names++)) {
100 name = conf_expand_value(name);
101 in = zconf_fopen(name);
104 "# using defaults found in %s\n"
113 conf_filename = name;
118 for_all_symbols(i, sym) {
119 sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED;
120 if (sym_is_choice(sym))
121 sym->flags &= ~SYMBOL_NEW;
122 sym->flags &= ~SYMBOL_VALID;
130 sym->user.val = NULL;
135 while (fgets(line, sizeof(line), in)) {
140 if (memcmp(line + 2, "CONFIG_", 7))
142 p = strchr(line + 9, ' ');
146 if (strncmp(p, "is not set", 10))
148 sym = sym_find(line + 9);
150 conf_warning("trying to assign nonexistent symbol %s", line + 9);
152 } else if (!(sym->flags & SYMBOL_NEW)) {
153 conf_warning("trying to reassign symbol %s", sym->name);
160 sym->flags &= ~SYMBOL_NEW;
167 if (memcmp(line, "CONFIG_", 7)) {
168 conf_warning("unexpected data");
171 p = strchr(line + 7, '=');
175 p2 = strchr(p, '\n');
178 sym = sym_find(line + 7);
180 conf_warning("trying to assign nonexistent symbol %s", line + 7);
182 } else if (!(sym->flags & SYMBOL_NEW)) {
183 conf_warning("trying to reassign symbol %s", sym->name);
190 sym->flags &= ~SYMBOL_NEW;
196 sym->flags &= ~SYMBOL_NEW;
201 sym->flags &= ~SYMBOL_NEW;
204 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
209 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
214 memmove(p2, p2 + 1, strlen(p2));
217 conf_warning("invalid string found");
222 if (sym_string_valid(sym, p)) {
223 sym->user.val = strdup(p);
224 sym->flags &= ~SYMBOL_NEW;
227 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
238 conf_warning("unexpected data");
241 if (sym && sym_is_choice_value(sym)) {
242 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
243 switch (sym->user.tri) {
247 if (cs->user.tri == yes) {
248 conf_warning("%s creates inconsistent choice state", sym->name);
249 cs->flags |= SYMBOL_NEW;
253 if (cs->user.tri != no) {
254 conf_warning("%s creates inconsistent choice state", sym->name);
255 cs->flags |= SYMBOL_NEW;
260 cs->user.tri = E_OR(cs->user.tri, sym->user.tri);
266 sym_calc_value(modules_sym);
270 int conf_read(const char *name)
273 struct property *prop;
277 if (conf_read_simple(name))
280 for_all_symbols(i, sym) {
282 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
284 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
285 /* check that calculated value agrees with saved value */
289 if (sym->user.tri != sym_get_tristate_value(sym))
291 if (!sym_is_choice(sym))
294 if (!strcmp(sym->curr.val, sym->user.val))
298 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
299 /* no previous value and not saved */
302 /* maybe print value in verbose mode... */
304 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
305 if (sym->visible == no)
306 sym->flags |= SYMBOL_NEW;
311 if (!sym_string_within_range(sym, sym->user.val)) {
312 sym->flags |= SYMBOL_NEW;
313 sym->flags &= ~SYMBOL_VALID;
319 if (!sym_is_choice(sym))
321 prop = sym_get_choice_prop(sym);
322 for (e = prop->expr; e; e = e->left.expr)
323 if (e->right.sym->visible != no)
324 sym->flags |= e->right.sym->flags & SYMBOL_NEW;
327 sym_change_count = conf_warnings || conf_unsaved;
332 int conf_write(const char *name)
337 const char *basename;
338 char dirname[128], tmpname[128], newname[128];
342 int use_timestamp = 1;
346 if (name && name[0]) {
350 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
351 strcpy(dirname, name);
352 strcat(dirname, "/");
353 basename = conf_def_filename;
354 } else if ((slash = strrchr(name, '/'))) {
355 int size = slash - name + 1;
356 memcpy(dirname, name, size);
359 basename = slash + 1;
361 basename = conf_def_filename;
365 basename = conf_def_filename;
367 sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid());
368 out = fopen(newname, "w");
373 out_h = fopen(".tmpconfig.h", "w");
376 file_write_dep(NULL);
378 sym = sym_lookup("KERNELVERSION", 0);
381 env = getenv("KCONFIG_NOTIMESTAMP");
386 "# Automatically generated make config: don't edit\n"
387 "# Busybox version: %s\n"
390 sym_get_string_value(sym),
391 use_timestamp ? "# " : "",
392 use_timestamp ? ctime(&now) : "");
394 char buf[sizeof("#define AUTOCONF_TIMESTAMP "
395 "\"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 /* if user has Factory timezone or some other odd install, the
402 * %Z above will overflow the string leaving us with undefined
403 * results ... so let's try again without the timezone.
406 strftime(buf, sizeof(buf), "#define AUTOCONF_TIMESTAMP "
407 "\"%Y-%m-%d %H:%M:%S\"\n", localtime(&now));
409 strcpy(buf, "#define AUTOCONF_TIMESTAMP \"\"\n");
411 fprintf(out_h, "/*\n"
412 " * Automatically generated C config: don't edit\n"
413 " * Busybox version: %s\n"
417 sym_get_string_value(sym),
420 if (!sym_change_count)
421 sym_clear_all_valid();
423 menu = rootmenu.list;
427 if (!menu_is_visible(menu))
429 str = menu_get_prompt(menu);
439 } else if (!(sym->flags & SYMBOL_CHOICE)) {
441 /* bbox: we want to see all syms
442 if (!(sym->flags & SYMBOL_WRITE))
445 sym->flags &= ~SYMBOL_WRITE;
447 if (type == S_TRISTATE) {
448 sym_calc_value(modules_sym);
449 if (modules_sym->curr.tri == no)
455 switch (sym_get_tristate_value(sym)) {
457 fprintf(out, "# CONFIG_%s is not set\n", sym->name);
459 fprintf(out_h, "#undef CONFIG_%s\n", sym->name);
461 fprintf(out_h, "#define ENABLE_%s 0\n", sym->name);
462 fprintf(out_h, "#define IF_%s(...)\n", sym->name);
463 fprintf(out_h, "#define IF_NOT_%s(...) __VA_ARGS__\n", sym->name);
467 fprintf(out, "CONFIG_%s=m\n", sym->name);
469 fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name);
472 fprintf(out, "CONFIG_%s=y\n", sym->name);
474 fprintf(out_h, "#define CONFIG_%s 1\n", sym->name);
476 fprintf(out_h, "#define ENABLE_%s 1\n", sym->name);
477 fprintf(out_h, "#define IF_%s(...) __VA_ARGS__\n", sym->name);
478 fprintf(out_h, "#define IF_NOT_%s(...)\n", sym->name);
485 str = sym_get_string_value(sym);
486 fprintf(out, "CONFIG_%s=\"", sym->name);
488 fprintf(out_h, "#define CONFIG_%s \"", sym->name);
490 l = strcspn(str, "\"\\");
492 fwrite(str, l, 1, out);
494 fwrite(str, l, 1, out_h);
497 while (*str == '\\' || *str == '"') {
498 fprintf(out, "\\%c", *str);
500 fprintf(out_h, "\\%c", *str);
506 fputs("\"\n", out_h);
508 fprintf(out_h, "#define ENABLE_%s 1\n", sym->name);
509 fprintf(out_h, "#define IF_%s(...) __VA_ARGS__\n", sym->name);
510 fprintf(out_h, "#define IF_NOT_%s(...)\n", sym->name);
514 str = sym_get_string_value(sym);
515 if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
516 fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
518 fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str);
520 fprintf(out_h, "#define ENABLE_%s 1\n", sym->name);
521 fprintf(out_h, "#define IF_%s(...) __VA_ARGS__\n", sym->name);
522 fprintf(out_h, "#define IF_NOT_%s(...)\n", sym->name);
527 str = sym_get_string_value(sym);
530 fprintf(out, "CONFIG_%s=%s\n", sym->name, str);
532 fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str);
534 fprintf(out_h, "#define ENABLE_%s 1\n", sym->name);
535 fprintf(out_h, "#define IF_%s(...) __VA_ARGS__\n", sym->name);
536 fprintf(out_h, "#define IF_NOT_%s(...)\n", sym->name);
549 else while ((menu = menu->parent)) {
559 rename(".tmpconfig.h", "include/autoconf.h");
561 if (!name || basename != conf_def_filename) {
563 name = conf_def_filename;
564 sprintf(tmpname, "%s.old", name);
565 rename(name, tmpname);
567 sprintf(tmpname, "%s%s", dirname, basename);
568 if (rename(newname, tmpname))
571 sym_change_count = 0;