blob: 4e878dda1add03cf9c700852a5249b50e7e69817 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
4 */
5
6#include <sys/stat.h>
7#include <ctype.h>
Arnaud Lacombe94bedec2010-08-17 01:40:20 -04008#include <errno.h>
Roman Zippel2e3646e2006-06-08 22:12:42 -07009#include <fcntl.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070010#include <stdio.h>
11#include <stdlib.h>
12#include <string.h>
13#include <time.h>
14#include <unistd.h>
15
16#define LKC_DIRECT_LINK
17#include "lkc.h"
18
Roman Zippelc1a0f5e2005-11-08 21:34:54 -080019static void conf_warning(const char *fmt, ...)
20 __attribute__ ((format (printf, 1, 2)));
21
Michal Marek42368c32010-08-17 10:21:19 +020022static void conf_message(const char *fmt, ...)
23 __attribute__ ((format (printf, 1, 2)));
24
Roman Zippelc1a0f5e2005-11-08 21:34:54 -080025static const char *conf_filename;
26static int conf_lineno, conf_warnings, conf_unsaved;
27
Linus Torvalds1da177e2005-04-16 15:20:36 -070028const char conf_defname[] = "arch/$ARCH/defconfig";
29
Roman Zippelc1a0f5e2005-11-08 21:34:54 -080030static void conf_warning(const char *fmt, ...)
31{
32 va_list ap;
33 va_start(ap, fmt);
34 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
35 vfprintf(stderr, fmt, ap);
36 fprintf(stderr, "\n");
37 va_end(ap);
38 conf_warnings++;
39}
40
Michal Marek42368c32010-08-17 10:21:19 +020041static void conf_default_message_callback(const char *fmt, va_list ap)
42{
43 printf("#\n# ");
44 vprintf(fmt, ap);
45 printf("\n#\n");
46}
47
48static void (*conf_message_callback) (const char *fmt, va_list ap) =
49 conf_default_message_callback;
50void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap))
51{
52 conf_message_callback = fn;
53}
54
55static void conf_message(const char *fmt, ...)
56{
57 va_list ap;
58
59 va_start(ap, fmt);
60 if (conf_message_callback)
61 conf_message_callback(fmt, ap);
62}
63
Roman Zippel14cdd3c2006-06-08 22:12:51 -070064const char *conf_get_configname(void)
65{
66 char *name = getenv("KCONFIG_CONFIG");
67
68 return name ? name : ".config";
69}
70
Markus Heidelberg12122f62009-05-18 01:36:54 +020071const char *conf_get_autoconfig_name(void)
72{
73 char *name = getenv("KCONFIG_AUTOCONFIG");
74
75 return name ? name : "include/config/auto.conf";
76}
77
J.A. Magallon48b9d032005-06-25 14:59:22 -070078static char *conf_expand_value(const char *in)
Linus Torvalds1da177e2005-04-16 15:20:36 -070079{
80 struct symbol *sym;
J.A. Magallon48b9d032005-06-25 14:59:22 -070081 const char *src;
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 static char res_value[SYMBOL_MAXLENGTH];
83 char *dst, name[SYMBOL_MAXLENGTH];
84
85 res_value[0] = 0;
86 dst = name;
87 while ((src = strchr(in, '$'))) {
88 strncat(res_value, in, src - in);
89 src++;
90 dst = name;
91 while (isalnum(*src) || *src == '_')
92 *dst++ = *src++;
93 *dst = 0;
94 sym = sym_lookup(name, 0);
95 sym_calc_value(sym);
96 strcat(res_value, sym_get_string_value(sym));
97 in = src;
98 }
99 strcat(res_value, in);
100
101 return res_value;
102}
103
104char *conf_get_default_confname(void)
105{
106 struct stat buf;
107 static char fullname[PATH_MAX+1];
108 char *env, *name;
109
110 name = conf_expand_value(conf_defname);
111 env = getenv(SRCTREE);
112 if (env) {
113 sprintf(fullname, "%s/%s", env, name);
114 if (!stat(fullname, &buf))
115 return fullname;
116 }
117 return name;
118}
119
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100120static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
121{
122 char *p2;
123
124 switch (sym->type) {
125 case S_TRISTATE:
126 if (p[0] == 'm') {
127 sym->def[def].tri = mod;
128 sym->flags |= def_flags;
129 break;
130 }
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400131 /* fall through */
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100132 case S_BOOLEAN:
133 if (p[0] == 'y') {
134 sym->def[def].tri = yes;
135 sym->flags |= def_flags;
136 break;
137 }
138 if (p[0] == 'n') {
139 sym->def[def].tri = no;
140 sym->flags |= def_flags;
141 break;
142 }
143 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
Arnaud Lacombe75f14682011-05-31 12:31:57 -0400144 return 1;
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100145 case S_OTHER:
146 if (*p != '"') {
147 for (p2 = p; *p2 && !isspace(*p2); p2++)
148 ;
149 sym->type = S_STRING;
150 goto done;
151 }
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400152 /* fall through */
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100153 case S_STRING:
154 if (*p++ != '"')
155 break;
156 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
157 if (*p2 == '"') {
158 *p2 = 0;
159 break;
160 }
161 memmove(p2, p2 + 1, strlen(p2));
162 }
163 if (!p2) {
164 conf_warning("invalid string found");
165 return 1;
166 }
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400167 /* fall through */
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100168 case S_INT:
169 case S_HEX:
170 done:
171 if (sym_string_valid(sym, p)) {
172 sym->def[def].val = strdup(p);
173 sym->flags |= def_flags;
174 } else {
175 conf_warning("symbol value '%s' invalid for %s", p, sym->name);
176 return 1;
177 }
178 break;
179 default:
180 ;
181 }
182 return 0;
183}
184
Roman Zippel669bfad2006-06-08 22:12:42 -0700185int conf_read_simple(const char *name, int def)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700186{
187 FILE *in = NULL;
188 char line[1024];
189 char *p, *p2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700190 struct symbol *sym;
Roman Zippel669bfad2006-06-08 22:12:42 -0700191 int i, def_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700192
193 if (name) {
194 in = zconf_fopen(name);
195 } else {
Roman Zippelface4372006-06-08 22:12:45 -0700196 struct property *prop;
197
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700198 name = conf_get_configname();
Roman Zippelddc97ca2006-06-08 22:12:38 -0700199 in = zconf_fopen(name);
200 if (in)
201 goto load;
Karsten Wiesebfc10002006-12-13 00:34:07 -0800202 sym_add_change_count(1);
Ulf Magnussonac1ffde2010-07-27 21:57:43 +0200203 if (!sym_defconfig_list) {
204 if (modules_sym)
205 sym_calc_value(modules_sym);
Roman Zippelface4372006-06-08 22:12:45 -0700206 return 1;
Ulf Magnussonac1ffde2010-07-27 21:57:43 +0200207 }
Roman Zippelface4372006-06-08 22:12:45 -0700208
209 for_all_defaults(sym_defconfig_list, prop) {
210 if (expr_calc_value(prop->visible.expr) == no ||
211 prop->expr->type != E_SYMBOL)
212 continue;
213 name = conf_expand_value(prop->expr->left.sym->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700214 in = zconf_fopen(name);
215 if (in) {
Michal Marek42368c32010-08-17 10:21:19 +0200216 conf_message(_("using defaults found in %s"),
217 name);
Roman Zippelddc97ca2006-06-08 22:12:38 -0700218 goto load;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700219 }
220 }
221 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700222 if (!in)
223 return 1;
224
Roman Zippelddc97ca2006-06-08 22:12:38 -0700225load:
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800226 conf_filename = name;
227 conf_lineno = 0;
228 conf_warnings = 0;
229 conf_unsaved = 0;
230
Roman Zippel669bfad2006-06-08 22:12:42 -0700231 def_flags = SYMBOL_DEF << def;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700232 for_all_symbols(i, sym) {
Roman Zippel669bfad2006-06-08 22:12:42 -0700233 sym->flags |= SYMBOL_CHANGED;
234 sym->flags &= ~(def_flags|SYMBOL_VALID);
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800235 if (sym_is_choice(sym))
Roman Zippel669bfad2006-06-08 22:12:42 -0700236 sym->flags |= def_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700237 switch (sym->type) {
238 case S_INT:
239 case S_HEX:
240 case S_STRING:
Roman Zippel669bfad2006-06-08 22:12:42 -0700241 if (sym->def[def].val)
242 free(sym->def[def].val);
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400243 /* fall through */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700244 default:
Roman Zippel669bfad2006-06-08 22:12:42 -0700245 sym->def[def].val = NULL;
246 sym->def[def].tri = no;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247 }
248 }
249
250 while (fgets(line, sizeof(line), in)) {
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800251 conf_lineno++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 sym = NULL;
Arnaud Lacombe8baefd32010-08-24 00:14:47 -0400253 if (line[0] == '#') {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400254 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700255 continue;
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400256 p = strchr(line + 2 + strlen(CONFIG_), ' ');
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257 if (!p)
258 continue;
259 *p++ = 0;
260 if (strncmp(p, "is not set", 10))
261 continue;
Roman Zippel669bfad2006-06-08 22:12:42 -0700262 if (def == S_DEF_USER) {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400263 sym = sym_find(line + 2 + strlen(CONFIG_));
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200264 if (!sym) {
265 sym_add_change_count(1);
Naohiro Aota8bea7542010-10-01 04:23:17 +0900266 goto setsym;
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200267 }
Roman Zippel669bfad2006-06-08 22:12:42 -0700268 } else {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400269 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
Roman Zippel669bfad2006-06-08 22:12:42 -0700270 if (sym->type == S_UNKNOWN)
271 sym->type = S_BOOLEAN;
272 }
273 if (sym->flags & def_flags) {
Jan Engelhardtd84876f2008-01-03 23:33:44 +0100274 conf_warning("override: reassigning to symbol %s", sym->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 }
276 switch (sym->type) {
277 case S_BOOLEAN:
278 case S_TRISTATE:
Roman Zippel669bfad2006-06-08 22:12:42 -0700279 sym->def[def].tri = no;
280 sym->flags |= def_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 break;
282 default:
283 ;
284 }
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400285 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
286 p = strchr(line + strlen(CONFIG_), '=');
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287 if (!p)
288 continue;
289 *p++ = 0;
290 p2 = strchr(p, '\n');
Matthew Wilcoxd3660a82006-07-13 12:54:07 -0600291 if (p2) {
292 *p2-- = 0;
293 if (*p2 == '\r')
294 *p2 = 0;
295 }
Roman Zippel669bfad2006-06-08 22:12:42 -0700296 if (def == S_DEF_USER) {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400297 sym = sym_find(line + strlen(CONFIG_));
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200298 if (!sym) {
299 sym_add_change_count(1);
Naohiro Aota8bea7542010-10-01 04:23:17 +0900300 goto setsym;
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200301 }
Roman Zippel669bfad2006-06-08 22:12:42 -0700302 } else {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400303 sym = sym_lookup(line + strlen(CONFIG_), 0);
Roman Zippel669bfad2006-06-08 22:12:42 -0700304 if (sym->type == S_UNKNOWN)
305 sym->type = S_OTHER;
306 }
307 if (sym->flags & def_flags) {
Jan Engelhardtd84876f2008-01-03 23:33:44 +0100308 conf_warning("override: reassigning to symbol %s", sym->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 }
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100310 if (conf_set_sym_val(sym, def, def_flags, p))
311 continue;
Arnaud Lacombe8baefd32010-08-24 00:14:47 -0400312 } else {
313 if (line[0] != '\r' && line[0] != '\n')
314 conf_warning("unexpected data");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315 continue;
316 }
Naohiro Aota8bea7542010-10-01 04:23:17 +0900317setsym:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 if (sym && sym_is_choice_value(sym)) {
319 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
Roman Zippel669bfad2006-06-08 22:12:42 -0700320 switch (sym->def[def].tri) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321 case no:
322 break;
323 case mod:
Roman Zippel669bfad2006-06-08 22:12:42 -0700324 if (cs->def[def].tri == yes) {
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800325 conf_warning("%s creates inconsistent choice state", sym->name);
Roman Zippel669bfad2006-06-08 22:12:42 -0700326 cs->flags &= ~def_flags;
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800327 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700328 break;
329 case yes:
Jan Engelhardtd84876f2008-01-03 23:33:44 +0100330 if (cs->def[def].tri != no)
331 conf_warning("override: %s changes choice state", sym->name);
332 cs->def[def].val = sym;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700333 break;
334 }
Sam Ravnborgd6ee3572008-01-07 21:09:55 +0100335 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 }
337 }
338 fclose(in);
339
340 if (modules_sym)
341 sym_calc_value(modules_sym);
Roman Zippel90389162005-11-08 21:34:49 -0800342 return 0;
343}
344
345int conf_read(const char *name)
346{
Roman Zippel7a962922008-01-14 04:50:23 +0100347 struct symbol *sym, *choice_sym;
Roman Zippel90389162005-11-08 21:34:49 -0800348 struct property *prop;
349 struct expr *e;
Roman Zippel669bfad2006-06-08 22:12:42 -0700350 int i, flags;
Roman Zippel90389162005-11-08 21:34:49 -0800351
Karsten Wiesebfc10002006-12-13 00:34:07 -0800352 sym_set_change_count(0);
Roman Zippelddc97ca2006-06-08 22:12:38 -0700353
Roman Zippel669bfad2006-06-08 22:12:42 -0700354 if (conf_read_simple(name, S_DEF_USER))
Roman Zippel90389162005-11-08 21:34:49 -0800355 return 1;
356
Linus Torvalds1da177e2005-04-16 15:20:36 -0700357 for_all_symbols(i, sym) {
358 sym_calc_value(sym);
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800359 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
360 goto sym_ok;
361 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
362 /* check that calculated value agrees with saved value */
363 switch (sym->type) {
364 case S_BOOLEAN:
365 case S_TRISTATE:
Roman Zippel0c1822e2006-06-08 22:12:41 -0700366 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800367 break;
368 if (!sym_is_choice(sym))
369 goto sym_ok;
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400370 /* fall through */
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800371 default:
Roman Zippel0c1822e2006-06-08 22:12:41 -0700372 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800373 goto sym_ok;
374 break;
375 }
376 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
377 /* no previous value and not saved */
378 goto sym_ok;
379 conf_unsaved++;
380 /* maybe print value in verbose mode... */
381 sym_ok:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382 if (!sym_is_choice(sym))
383 continue;
Roman Zippeld8982ba2007-07-09 11:43:58 -0700384 /* The choice symbol only has a set value (and thus is not new)
385 * if all its visible childs have values.
386 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 prop = sym_get_choice_prop(sym);
Roman Zippel669bfad2006-06-08 22:12:42 -0700388 flags = sym->flags;
Roman Zippel7a962922008-01-14 04:50:23 +0100389 expr_list_for_each_sym(prop->expr, e, choice_sym)
390 if (choice_sym->visible != no)
391 flags &= choice_sym->flags;
Roman Zippel002d27b2006-07-13 13:22:38 +0200392 sym->flags &= flags | ~SYMBOL_DEF_USER;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700393 }
394
Roman Zippeld8982ba2007-07-09 11:43:58 -0700395 for_all_symbols(i, sym) {
396 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
397 /* Reset values of generates values, so they'll appear
398 * as new, if they should become visible, but that
399 * doesn't quite work if the Kconfig and the saved
400 * configuration disagree.
401 */
402 if (sym->visible == no && !conf_unsaved)
403 sym->flags &= ~SYMBOL_DEF_USER;
404 switch (sym->type) {
405 case S_STRING:
406 case S_INT:
407 case S_HEX:
408 /* Reset a string value if it's out of range */
409 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
410 break;
411 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
412 conf_unsaved++;
413 break;
414 default:
415 break;
416 }
417 }
418 }
419
Karsten Wiesebfc10002006-12-13 00:34:07 -0800420 sym_add_change_count(conf_warnings || conf_unsaved);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700421
422 return 0;
423}
424
Sam Ravnborg49192f22010-07-31 23:35:33 +0200425/* Write a S_STRING */
426static void conf_write_string(bool headerfile, const char *name,
427 const char *str, FILE *out)
428{
429 int l;
430 if (headerfile)
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400431 fprintf(out, "#define %s%s \"", CONFIG_, name);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200432 else
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400433 fprintf(out, "%s%s=\"", CONFIG_, name);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200434
435 while (1) {
436 l = strcspn(str, "\"\\");
437 if (l) {
Jean Sacrenbf5e3272010-08-04 16:01:02 -0600438 xfwrite(str, l, 1, out);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200439 str += l;
440 }
441 if (!*str)
442 break;
443 fprintf(out, "\\%c", *str++);
444 }
445 fputs("\"\n", out);
446}
447
Arnaud Lacombe0dce6312010-12-05 01:33:16 -0500448static void conf_write_symbol(struct symbol *sym, FILE *out, bool write_no)
Sam Ravnborg49192f22010-07-31 23:35:33 +0200449{
450 const char *str;
451
Arnaud Lacombe0dce6312010-12-05 01:33:16 -0500452 switch (sym->type) {
Sam Ravnborg49192f22010-07-31 23:35:33 +0200453 case S_BOOLEAN:
454 case S_TRISTATE:
455 switch (sym_get_tristate_value(sym)) {
456 case no:
457 if (write_no)
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400458 fprintf(out, "# %s%s is not set\n",
459 CONFIG_, sym->name);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200460 break;
461 case mod:
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400462 fprintf(out, "%s%s=m\n", CONFIG_, sym->name);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200463 break;
464 case yes:
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400465 fprintf(out, "%s%s=y\n", CONFIG_, sym->name);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200466 break;
467 }
468 break;
469 case S_STRING:
470 conf_write_string(false, sym->name, sym_get_string_value(sym), out);
471 break;
472 case S_HEX:
473 case S_INT:
474 str = sym_get_string_value(sym);
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400475 fprintf(out, "%s%s=%s\n", CONFIG_, sym->name, str);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200476 break;
477 case S_OTHER:
478 case S_UNKNOWN:
479 break;
480 }
481}
482
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200483/*
484 * Write out a minimal config.
485 * All values that has default values are skipped as this is redundant.
486 */
487int conf_write_defconfig(const char *filename)
488{
489 struct symbol *sym;
490 struct menu *menu;
491 FILE *out;
492
493 out = fopen(filename, "w");
494 if (!out)
495 return 1;
496
497 sym_clear_all_valid();
498
499 /* Traverse all menus to find all relevant symbols */
500 menu = rootmenu.list;
501
502 while (menu != NULL)
503 {
504 sym = menu->sym;
505 if (sym == NULL) {
506 if (!menu_is_visible(menu))
507 goto next_menu;
508 } else if (!sym_is_choice(sym)) {
509 sym_calc_value(sym);
510 if (!(sym->flags & SYMBOL_WRITE))
511 goto next_menu;
512 sym->flags &= ~SYMBOL_WRITE;
513 /* If we cannot change the symbol - skip */
514 if (!sym_is_changable(sym))
515 goto next_menu;
516 /* If symbol equals to default value - skip */
517 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
518 goto next_menu;
519
520 /*
521 * If symbol is a choice value and equals to the
522 * default for a choice - skip.
Sam Ravnborg84062dd2010-08-14 23:22:16 +0200523 * But only if value is bool and equal to "y" and
524 * choice is not "optional".
525 * (If choice is "optional" then all values can be "n")
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200526 */
527 if (sym_is_choice_value(sym)) {
528 struct symbol *cs;
529 struct symbol *ds;
530
531 cs = prop_get_symbol(sym_get_choice_prop(sym));
532 ds = sym_choice_default(cs);
Sam Ravnborg84062dd2010-08-14 23:22:16 +0200533 if (!sym_is_optional(cs) && sym == ds) {
Sam Ravnborg801690c2010-08-12 09:11:51 +0200534 if ((sym->type == S_BOOLEAN) &&
535 sym_get_tristate_value(sym) == yes)
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200536 goto next_menu;
537 }
538 }
Arnaud Lacombe0dce6312010-12-05 01:33:16 -0500539 conf_write_symbol(sym, out, true);
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200540 }
541next_menu:
542 if (menu->list != NULL) {
543 menu = menu->list;
544 }
545 else if (menu->next != NULL) {
546 menu = menu->next;
547 } else {
548 while ((menu = menu->parent)) {
549 if (menu->next != NULL) {
550 menu = menu->next;
551 break;
552 }
553 }
554 }
555 }
556 fclose(out);
557 return 0;
558}
559
Linus Torvalds1da177e2005-04-16 15:20:36 -0700560int conf_write(const char *name)
561{
Roman Zippelc955cca2006-06-08 22:12:39 -0700562 FILE *out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563 struct symbol *sym;
564 struct menu *menu;
565 const char *basename;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700566 const char *str;
Will Newton1408b152010-09-22 15:59:13 +0100567 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700568 char *env;
569
570 dirname[0] = 0;
571 if (name && name[0]) {
572 struct stat st;
573 char *slash;
574
575 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
576 strcpy(dirname, name);
577 strcat(dirname, "/");
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700578 basename = conf_get_configname();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700579 } else if ((slash = strrchr(name, '/'))) {
580 int size = slash - name + 1;
581 memcpy(dirname, name, size);
582 dirname[size] = 0;
583 if (slash[1])
584 basename = slash + 1;
585 else
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700586 basename = conf_get_configname();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700587 } else
588 basename = name;
589 } else
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700590 basename = conf_get_configname();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700591
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700592 sprintf(newname, "%s%s", dirname, basename);
593 env = getenv("KCONFIG_OVERWRITECONFIG");
594 if (!env || !*env) {
595 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
596 out = fopen(tmpname, "w");
597 } else {
598 *tmpname = 0;
599 out = fopen(newname, "w");
600 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700601 if (!out)
602 return 1;
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700603
Arnaldo Carvalho de Melo3b9fa092005-05-05 15:09:46 -0700604 fprintf(out, _("#\n"
605 "# Automatically generated make config: don't edit\n"
Arnaud Lacombe09548282010-08-18 01:57:13 -0400606 "# %s\n"
Arnaldo Carvalho de Melo3b9fa092005-05-05 15:09:46 -0700607 "#\n"),
Arnaud Lacombebdebd482011-05-15 23:22:56 -0400608 rootmenu.prompt->text);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700609
Karsten Wieseb3214292006-12-13 00:34:06 -0800610 if (!conf_get_changed())
Linus Torvalds1da177e2005-04-16 15:20:36 -0700611 sym_clear_all_valid();
612
613 menu = rootmenu.list;
614 while (menu) {
615 sym = menu->sym;
616 if (!sym) {
617 if (!menu_is_visible(menu))
618 goto next;
619 str = menu_get_prompt(menu);
620 fprintf(out, "\n"
621 "#\n"
622 "# %s\n"
623 "#\n", str);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700624 } else if (!(sym->flags & SYMBOL_CHOICE)) {
625 sym_calc_value(sym);
626 if (!(sym->flags & SYMBOL_WRITE))
627 goto next;
628 sym->flags &= ~SYMBOL_WRITE;
Sam Ravnborg49192f22010-07-31 23:35:33 +0200629 /* Write config symbol to file */
Arnaud Lacombe0dce6312010-12-05 01:33:16 -0500630 conf_write_symbol(sym, out, true);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700631 }
632
Sam Ravnborg49192f22010-07-31 23:35:33 +0200633next:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700634 if (menu->list) {
635 menu = menu->list;
636 continue;
637 }
638 if (menu->next)
639 menu = menu->next;
640 else while ((menu = menu->parent)) {
641 if (menu->next) {
642 menu = menu->next;
643 break;
644 }
645 }
646 }
647 fclose(out);
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700648
649 if (*tmpname) {
Sam Ravnborg9a3d0fe2006-10-01 11:48:53 +0200650 strcat(dirname, basename);
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700651 strcat(dirname, ".old");
652 rename(newname, dirname);
653 if (rename(tmpname, newname))
654 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700655 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700656
Michal Marek42368c32010-08-17 10:21:19 +0200657 conf_message(_("configuration written to %s"), newname);
Roman Zippelddc97ca2006-06-08 22:12:38 -0700658
Karsten Wiesebfc10002006-12-13 00:34:07 -0800659 sym_set_change_count(0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700660
661 return 0;
662}
Roman Zippelc955cca2006-06-08 22:12:39 -0700663
Trevor Keith4356f482009-09-18 12:49:23 -0700664static int conf_split_config(void)
Roman Zippel2e3646e2006-06-08 22:12:42 -0700665{
Markus Heidelberg12122f62009-05-18 01:36:54 +0200666 const char *name;
Will Newton1408b152010-09-22 15:59:13 +0100667 char path[PATH_MAX+1];
Roman Zippel2e3646e2006-06-08 22:12:42 -0700668 char *s, *d, c;
669 struct symbol *sym;
670 struct stat sb;
671 int res, i, fd;
672
Markus Heidelberg12122f62009-05-18 01:36:54 +0200673 name = conf_get_autoconfig_name();
Roman Zippel2e3646e2006-06-08 22:12:42 -0700674 conf_read_simple(name, S_DEF_AUTO);
675
676 if (chdir("include/config"))
677 return 1;
678
679 res = 0;
680 for_all_symbols(i, sym) {
681 sym_calc_value(sym);
682 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
683 continue;
684 if (sym->flags & SYMBOL_WRITE) {
685 if (sym->flags & SYMBOL_DEF_AUTO) {
686 /*
687 * symbol has old and new value,
688 * so compare them...
689 */
690 switch (sym->type) {
691 case S_BOOLEAN:
692 case S_TRISTATE:
693 if (sym_get_tristate_value(sym) ==
694 sym->def[S_DEF_AUTO].tri)
695 continue;
696 break;
697 case S_STRING:
698 case S_HEX:
699 case S_INT:
700 if (!strcmp(sym_get_string_value(sym),
701 sym->def[S_DEF_AUTO].val))
702 continue;
703 break;
704 default:
705 break;
706 }
707 } else {
708 /*
709 * If there is no old value, only 'no' (unset)
710 * is allowed as new value.
711 */
712 switch (sym->type) {
713 case S_BOOLEAN:
714 case S_TRISTATE:
715 if (sym_get_tristate_value(sym) == no)
716 continue;
717 break;
718 default:
719 break;
720 }
721 }
722 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
723 /* There is neither an old nor a new value. */
724 continue;
725 /* else
726 * There is an old value, but no new value ('no' (unset)
727 * isn't saved in auto.conf, so the old value is always
728 * different from 'no').
729 */
730
731 /* Replace all '_' and append ".h" */
732 s = sym->name;
733 d = path;
734 while ((c = *s++)) {
735 c = tolower(c);
736 *d++ = (c == '_') ? '/' : c;
737 }
738 strcpy(d, ".h");
739
740 /* Assume directory path already exists. */
741 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
742 if (fd == -1) {
743 if (errno != ENOENT) {
744 res = 1;
745 break;
746 }
747 /*
748 * Create directory components,
749 * unless they exist already.
750 */
751 d = path;
752 while ((d = strchr(d, '/'))) {
753 *d = 0;
754 if (stat(path, &sb) && mkdir(path, 0755)) {
755 res = 1;
756 goto out;
757 }
758 *d++ = '/';
759 }
760 /* Try it again. */
761 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
762 if (fd == -1) {
763 res = 1;
764 break;
765 }
766 }
767 close(fd);
768 }
769out:
770 if (chdir("../.."))
771 return 1;
772
773 return res;
774}
775
Roman Zippelc955cca2006-06-08 22:12:39 -0700776int conf_write_autoconf(void)
777{
778 struct symbol *sym;
779 const char *str;
Markus Heidelberg12122f62009-05-18 01:36:54 +0200780 const char *name;
Michal Marekbc081dd2009-12-07 16:38:33 +0100781 FILE *out, *tristate, *out_h;
Sam Ravnborg49192f22010-07-31 23:35:33 +0200782 int i;
Roman Zippelc955cca2006-06-08 22:12:39 -0700783
Roman Zippel2e3646e2006-06-08 22:12:42 -0700784 sym_clear_all_valid();
785
Roman Zippelc955cca2006-06-08 22:12:39 -0700786 file_write_dep("include/config/auto.conf.cmd");
787
Roman Zippel2e3646e2006-06-08 22:12:42 -0700788 if (conf_split_config())
789 return 1;
790
Roman Zippelc955cca2006-06-08 22:12:39 -0700791 out = fopen(".tmpconfig", "w");
792 if (!out)
793 return 1;
794
Michal Marekbc081dd2009-12-07 16:38:33 +0100795 tristate = fopen(".tmpconfig_tristate", "w");
796 if (!tristate) {
797 fclose(out);
798 return 1;
799 }
800
Roman Zippelc955cca2006-06-08 22:12:39 -0700801 out_h = fopen(".tmpconfig.h", "w");
802 if (!out_h) {
803 fclose(out);
Michal Marekbc081dd2009-12-07 16:38:33 +0100804 fclose(tristate);
Roman Zippelc955cca2006-06-08 22:12:39 -0700805 return 1;
806 }
807
Roman Zippelc955cca2006-06-08 22:12:39 -0700808 fprintf(out, "#\n"
809 "# Automatically generated make config: don't edit\n"
Arnaud Lacombe09548282010-08-18 01:57:13 -0400810 "# %s\n"
Roman Zippelc955cca2006-06-08 22:12:39 -0700811 "#\n",
Michal Marekc33724a2009-04-28 15:05:20 +0200812 rootmenu.prompt->text);
Michal Marekbc081dd2009-12-07 16:38:33 +0100813 fprintf(tristate, "#\n"
814 "# Automatically generated - do not edit\n"
815 "\n");
Roman Zippelc955cca2006-06-08 22:12:39 -0700816 fprintf(out_h, "/*\n"
817 " * Automatically generated C config: don't edit\n"
Arnaud Lacombe09548282010-08-18 01:57:13 -0400818 " * %s\n"
Arnaud Lacombe6e71fab2010-12-05 01:31:57 -0500819 " */\n",
Michal Marekc33724a2009-04-28 15:05:20 +0200820 rootmenu.prompt->text);
Roman Zippelc955cca2006-06-08 22:12:39 -0700821
Roman Zippelc955cca2006-06-08 22:12:39 -0700822 for_all_symbols(i, sym) {
823 sym_calc_value(sym);
824 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
825 continue;
Sam Ravnborg49192f22010-07-31 23:35:33 +0200826
827 /* write symbol to config file */
Arnaud Lacombe0dce6312010-12-05 01:33:16 -0500828 conf_write_symbol(sym, out, false);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200829
830 /* update autoconf and tristate files */
Roman Zippelc955cca2006-06-08 22:12:39 -0700831 switch (sym->type) {
832 case S_BOOLEAN:
833 case S_TRISTATE:
834 switch (sym_get_tristate_value(sym)) {
835 case no:
836 break;
837 case mod:
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400838 fprintf(tristate, "%s%s=M\n",
839 CONFIG_, sym->name);
840 fprintf(out_h, "#define %s%s_MODULE 1\n",
841 CONFIG_, sym->name);
Roman Zippelc955cca2006-06-08 22:12:39 -0700842 break;
843 case yes:
Michal Marekbc081dd2009-12-07 16:38:33 +0100844 if (sym->type == S_TRISTATE)
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400845 fprintf(tristate,"%s%s=Y\n",
846 CONFIG_, sym->name);
847 fprintf(out_h, "#define %s%s 1\n",
848 CONFIG_, sym->name);
Roman Zippelc955cca2006-06-08 22:12:39 -0700849 break;
850 }
851 break;
852 case S_STRING:
Sam Ravnborg49192f22010-07-31 23:35:33 +0200853 conf_write_string(true, sym->name, sym_get_string_value(sym), out_h);
Roman Zippelc955cca2006-06-08 22:12:39 -0700854 break;
855 case S_HEX:
856 str = sym_get_string_value(sym);
857 if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400858 fprintf(out_h, "#define %s%s 0x%s\n",
859 CONFIG_, sym->name, str);
Roman Zippelc955cca2006-06-08 22:12:39 -0700860 break;
861 }
862 case S_INT:
863 str = sym_get_string_value(sym);
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400864 fprintf(out_h, "#define %s%s %s\n",
865 CONFIG_, sym->name, str);
Roman Zippelc955cca2006-06-08 22:12:39 -0700866 break;
867 default:
868 break;
869 }
870 }
871 fclose(out);
Michal Marekbc081dd2009-12-07 16:38:33 +0100872 fclose(tristate);
Roman Zippelc955cca2006-06-08 22:12:39 -0700873 fclose(out_h);
874
875 name = getenv("KCONFIG_AUTOHEADER");
876 if (!name)
Sam Ravnborg264a2682009-10-18 00:49:24 +0200877 name = "include/generated/autoconf.h";
Roman Zippelc955cca2006-06-08 22:12:39 -0700878 if (rename(".tmpconfig.h", name))
879 return 1;
Michal Marekbc081dd2009-12-07 16:38:33 +0100880 name = getenv("KCONFIG_TRISTATE");
881 if (!name)
882 name = "include/config/tristate.conf";
883 if (rename(".tmpconfig_tristate", name))
884 return 1;
Markus Heidelberg12122f62009-05-18 01:36:54 +0200885 name = conf_get_autoconfig_name();
Roman Zippelc955cca2006-06-08 22:12:39 -0700886 /*
887 * This must be the last step, kbuild has a dependency on auto.conf
888 * and this marks the successful completion of the previous steps.
889 */
890 if (rename(".tmpconfig", name))
891 return 1;
892
893 return 0;
894}
Karsten Wieseb3214292006-12-13 00:34:06 -0800895
Karsten Wiesebfc10002006-12-13 00:34:07 -0800896static int sym_change_count;
Karsten Wiese3b354c52006-12-13 00:34:08 -0800897static void (*conf_changed_callback)(void);
Karsten Wiesebfc10002006-12-13 00:34:07 -0800898
899void sym_set_change_count(int count)
900{
Karsten Wiese3b354c52006-12-13 00:34:08 -0800901 int _sym_change_count = sym_change_count;
Karsten Wiesebfc10002006-12-13 00:34:07 -0800902 sym_change_count = count;
Karsten Wiese3b354c52006-12-13 00:34:08 -0800903 if (conf_changed_callback &&
904 (bool)_sym_change_count != (bool)count)
905 conf_changed_callback();
Karsten Wiesebfc10002006-12-13 00:34:07 -0800906}
907
908void sym_add_change_count(int count)
909{
Karsten Wiese3b354c52006-12-13 00:34:08 -0800910 sym_set_change_count(count + sym_change_count);
Karsten Wiesebfc10002006-12-13 00:34:07 -0800911}
912
Karsten Wieseb3214292006-12-13 00:34:06 -0800913bool conf_get_changed(void)
914{
915 return sym_change_count;
916}
Karsten Wiese3b354c52006-12-13 00:34:08 -0800917
918void conf_set_changed_callback(void (*fn)(void))
919{
920 conf_changed_callback = fn;
921}
Roman Zippeldc7862e2008-05-06 04:55:55 +0200922
Sam Ravnborga64b44e2010-08-12 09:11:52 +0200923static void randomize_choice_values(struct symbol *csym)
924{
925 struct property *prop;
926 struct symbol *sym;
927 struct expr *e;
928 int cnt, def;
929
930 /*
Arnaud Lacombe579fb8e2010-12-05 01:41:16 -0500931 * If choice is mod then we may have more items selected
Sam Ravnborga64b44e2010-08-12 09:11:52 +0200932 * and if no then no-one.
933 * In both cases stop.
934 */
935 if (csym->curr.tri != yes)
936 return;
937
938 prop = sym_get_choice_prop(csym);
939
940 /* count entries in choice block */
941 cnt = 0;
942 expr_list_for_each_sym(prop->expr, e, sym)
943 cnt++;
944
945 /*
946 * find a random value and set it to yes,
947 * set the rest to no so we have only one set
948 */
949 def = (rand() % cnt);
950
951 cnt = 0;
952 expr_list_for_each_sym(prop->expr, e, sym) {
953 if (def == cnt++) {
954 sym->def[S_DEF_USER].tri = yes;
955 csym->def[S_DEF_USER].val = sym;
956 }
957 else {
958 sym->def[S_DEF_USER].tri = no;
959 }
960 }
961 csym->flags |= SYMBOL_DEF_USER;
962 /* clear VALID to get value calculated */
963 csym->flags &= ~(SYMBOL_VALID);
964}
965
966static void set_all_choice_values(struct symbol *csym)
967{
968 struct property *prop;
969 struct symbol *sym;
970 struct expr *e;
971
972 prop = sym_get_choice_prop(csym);
973
974 /*
975 * Set all non-assinged choice values to no
976 */
977 expr_list_for_each_sym(prop->expr, e, sym) {
978 if (!sym_has_value(sym))
979 sym->def[S_DEF_USER].tri = no;
980 }
981 csym->flags |= SYMBOL_DEF_USER;
982 /* clear VALID to get value calculated */
983 csym->flags &= ~(SYMBOL_VALID);
984}
Roman Zippeldc7862e2008-05-06 04:55:55 +0200985
986void conf_set_all_new_symbols(enum conf_def_mode mode)
987{
988 struct symbol *sym, *csym;
Sam Ravnborga64b44e2010-08-12 09:11:52 +0200989 int i, cnt;
Roman Zippeldc7862e2008-05-06 04:55:55 +0200990
991 for_all_symbols(i, sym) {
992 if (sym_has_value(sym))
993 continue;
994 switch (sym_get_type(sym)) {
995 case S_BOOLEAN:
996 case S_TRISTATE:
997 switch (mode) {
998 case def_yes:
999 sym->def[S_DEF_USER].tri = yes;
1000 break;
1001 case def_mod:
1002 sym->def[S_DEF_USER].tri = mod;
1003 break;
1004 case def_no:
1005 sym->def[S_DEF_USER].tri = no;
1006 break;
1007 case def_random:
Peter Korsgaard1244b412010-07-22 14:24:57 +02001008 cnt = sym_get_type(sym) == S_TRISTATE ? 3 : 2;
1009 sym->def[S_DEF_USER].tri = (tristate)(rand() % cnt);
Roman Zippeldc7862e2008-05-06 04:55:55 +02001010 break;
1011 default:
1012 continue;
1013 }
Sam Ravnborg184832c2009-03-15 11:05:12 +01001014 if (!(sym_is_choice(sym) && mode == def_random))
Roman Zippeldc7862e2008-05-06 04:55:55 +02001015 sym->flags |= SYMBOL_DEF_USER;
1016 break;
1017 default:
1018 break;
1019 }
1020
1021 }
1022
Al Viroce97e132008-10-26 05:12:34 +00001023 sym_clear_all_valid();
Roman Zippeldc7862e2008-05-06 04:55:55 +02001024
Sam Ravnborg184832c2009-03-15 11:05:12 +01001025 /*
1026 * We have different type of choice blocks.
Arnaud Lacombe579fb8e2010-12-05 01:41:16 -05001027 * If curr.tri equals to mod then we can select several
Sam Ravnborg184832c2009-03-15 11:05:12 +01001028 * choice symbols in one block.
1029 * In this case we do nothing.
Arnaud Lacombe579fb8e2010-12-05 01:41:16 -05001030 * If curr.tri equals yes then only one symbol can be
Sam Ravnborg184832c2009-03-15 11:05:12 +01001031 * selected in a choice block and we set it to yes,
1032 * and the rest to no.
1033 */
Roman Zippeldc7862e2008-05-06 04:55:55 +02001034 for_all_symbols(i, csym) {
1035 if (sym_has_value(csym) || !sym_is_choice(csym))
1036 continue;
1037
1038 sym_calc_value(csym);
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001039 if (mode == def_random)
1040 randomize_choice_values(csym);
1041 else
1042 set_all_choice_values(csym);
Roman Zippeldc7862e2008-05-06 04:55:55 +02001043 }
1044}