blob: 28df18dd1147f60b555fea428afe42513b592410 [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>
Arnaud Lacombe10a4b272011-06-01 16:00:46 -040010#include <stdarg.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070011#include <stdio.h>
12#include <stdlib.h>
13#include <string.h>
14#include <time.h>
15#include <unistd.h>
16
Linus Torvalds1da177e2005-04-16 15:20:36 -070017#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/$ARCH/defconfig";
29
Roman Zippelc1a0f5e2005-11-08 21:34:54 -080030static void conf_warning(const char *fmt, ...)
31{
32 va_list ap;
33 va_start(ap, fmt);
34 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
35 vfprintf(stderr, fmt, ap);
36 fprintf(stderr, "\n");
37 va_end(ap);
38 conf_warnings++;
39}
40
Michal Marek42368c32010-08-17 10:21:19 +020041static void conf_default_message_callback(const char *fmt, va_list ap)
42{
43 printf("#\n# ");
44 vprintf(fmt, ap);
45 printf("\n#\n");
46}
47
48static void (*conf_message_callback) (const char *fmt, va_list ap) =
49 conf_default_message_callback;
50void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap))
51{
52 conf_message_callback = fn;
53}
54
55static void conf_message(const char *fmt, ...)
56{
57 va_list ap;
58
59 va_start(ap, fmt);
60 if (conf_message_callback)
61 conf_message_callback(fmt, ap);
Colin Ian Kingb6a2ab22015-01-12 13:18:26 +000062 va_end(ap);
Michal Marek42368c32010-08-17 10:21:19 +020063}
64
Roman Zippel14cdd3c2006-06-08 22:12:51 -070065const char *conf_get_configname(void)
66{
67 char *name = getenv("KCONFIG_CONFIG");
68
69 return name ? name : ".config";
70}
71
Markus Heidelberg12122f62009-05-18 01:36:54 +020072const char *conf_get_autoconfig_name(void)
73{
74 char *name = getenv("KCONFIG_AUTOCONFIG");
75
76 return name ? name : "include/config/auto.conf";
77}
78
J.A. Magallon48b9d032005-06-25 14:59:22 -070079static char *conf_expand_value(const char *in)
Linus Torvalds1da177e2005-04-16 15:20:36 -070080{
81 struct symbol *sym;
J.A. Magallon48b9d032005-06-25 14:59:22 -070082 const char *src;
Linus Torvalds1da177e2005-04-16 15:20:36 -070083 static char res_value[SYMBOL_MAXLENGTH];
84 char *dst, name[SYMBOL_MAXLENGTH];
85
86 res_value[0] = 0;
87 dst = name;
88 while ((src = strchr(in, '$'))) {
89 strncat(res_value, in, src - in);
90 src++;
91 dst = name;
92 while (isalnum(*src) || *src == '_')
93 *dst++ = *src++;
94 *dst = 0;
95 sym = sym_lookup(name, 0);
96 sym_calc_value(sym);
97 strcat(res_value, sym_get_string_value(sym));
98 in = src;
99 }
100 strcat(res_value, in);
101
102 return res_value;
103}
104
105char *conf_get_default_confname(void)
106{
107 struct stat buf;
108 static char fullname[PATH_MAX+1];
109 char *env, *name;
110
111 name = conf_expand_value(conf_defname);
112 env = getenv(SRCTREE);
113 if (env) {
114 sprintf(fullname, "%s/%s", env, name);
115 if (!stat(fullname, &buf))
116 return fullname;
117 }
118 return name;
119}
120
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100121static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
122{
123 char *p2;
124
125 switch (sym->type) {
126 case S_TRISTATE:
127 if (p[0] == 'm') {
128 sym->def[def].tri = mod;
129 sym->flags |= def_flags;
130 break;
131 }
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400132 /* fall through */
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100133 case S_BOOLEAN:
134 if (p[0] == 'y') {
135 sym->def[def].tri = yes;
136 sym->flags |= def_flags;
137 break;
138 }
139 if (p[0] == 'n') {
140 sym->def[def].tri = no;
141 sym->flags |= def_flags;
142 break;
143 }
Yann E. MORIN04b19b72013-08-06 18:45:07 +0200144 if (def != S_DEF_AUTO)
145 conf_warning("symbol value '%s' invalid for %s",
146 p, sym->name);
Arnaud Lacombe75f14682011-05-31 12:31:57 -0400147 return 1;
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100148 case S_OTHER:
149 if (*p != '"') {
150 for (p2 = p; *p2 && !isspace(*p2); p2++)
151 ;
152 sym->type = S_STRING;
153 goto done;
154 }
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400155 /* fall through */
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100156 case S_STRING:
157 if (*p++ != '"')
158 break;
159 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
160 if (*p2 == '"') {
161 *p2 = 0;
162 break;
163 }
164 memmove(p2, p2 + 1, strlen(p2));
165 }
166 if (!p2) {
Yann E. MORIN04b19b72013-08-06 18:45:07 +0200167 if (def != S_DEF_AUTO)
168 conf_warning("invalid string found");
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100169 return 1;
170 }
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400171 /* fall through */
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100172 case S_INT:
173 case S_HEX:
174 done:
175 if (sym_string_valid(sym, p)) {
176 sym->def[def].val = strdup(p);
177 sym->flags |= def_flags;
178 } else {
Yann E. MORIN04b19b72013-08-06 18:45:07 +0200179 if (def != S_DEF_AUTO)
180 conf_warning("symbol value '%s' invalid for %s",
181 p, sym->name);
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100182 return 1;
183 }
184 break;
185 default:
186 ;
187 }
188 return 0;
189}
190
Cody Schafer1a7a8c62012-07-13 11:27:12 -0700191#define LINE_GROWTH 16
192static int add_byte(int c, char **lineptr, size_t slen, size_t *n)
193{
194 char *nline;
195 size_t new_size = slen + 1;
196 if (new_size > *n) {
197 new_size += LINE_GROWTH - 1;
198 new_size *= 2;
199 nline = realloc(*lineptr, new_size);
200 if (!nline)
201 return -1;
202
203 *lineptr = nline;
204 *n = new_size;
205 }
206
207 (*lineptr)[slen] = c;
208
209 return 0;
210}
211
212static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream)
213{
214 char *line = *lineptr;
215 size_t slen = 0;
216
217 for (;;) {
218 int c = getc(stream);
219
220 switch (c) {
221 case '\n':
222 if (add_byte(c, &line, slen, n) < 0)
223 goto e_out;
224 slen++;
225 /* fall through */
226 case EOF:
227 if (add_byte('\0', &line, slen, n) < 0)
228 goto e_out;
229 *lineptr = line;
230 if (slen == 0)
231 return -1;
232 return slen;
233 default:
234 if (add_byte(c, &line, slen, n) < 0)
235 goto e_out;
236 slen++;
237 }
238 }
239
240e_out:
241 line[slen-1] = '\0';
242 *lineptr = line;
243 return -1;
244}
245
Roman Zippel669bfad2006-06-08 22:12:42 -0700246int conf_read_simple(const char *name, int def)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700247{
248 FILE *in = NULL;
Cody Schafer1a7a8c62012-07-13 11:27:12 -0700249 char *line = NULL;
250 size_t line_asize = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 char *p, *p2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252 struct symbol *sym;
Roman Zippel669bfad2006-06-08 22:12:42 -0700253 int i, def_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700254
255 if (name) {
256 in = zconf_fopen(name);
257 } else {
Roman Zippelface4372006-06-08 22:12:45 -0700258 struct property *prop;
259
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700260 name = conf_get_configname();
Roman Zippelddc97ca2006-06-08 22:12:38 -0700261 in = zconf_fopen(name);
262 if (in)
263 goto load;
Karsten Wiesebfc10002006-12-13 00:34:07 -0800264 sym_add_change_count(1);
Ulf Magnussonac1ffde2010-07-27 21:57:43 +0200265 if (!sym_defconfig_list) {
266 if (modules_sym)
267 sym_calc_value(modules_sym);
Roman Zippelface4372006-06-08 22:12:45 -0700268 return 1;
Ulf Magnussonac1ffde2010-07-27 21:57:43 +0200269 }
Roman Zippelface4372006-06-08 22:12:45 -0700270
271 for_all_defaults(sym_defconfig_list, prop) {
272 if (expr_calc_value(prop->visible.expr) == no ||
273 prop->expr->type != E_SYMBOL)
274 continue;
275 name = conf_expand_value(prop->expr->left.sym->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276 in = zconf_fopen(name);
277 if (in) {
Michal Marek42368c32010-08-17 10:21:19 +0200278 conf_message(_("using defaults found in %s"),
279 name);
Roman Zippelddc97ca2006-06-08 22:12:38 -0700280 goto load;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700281 }
282 }
283 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700284 if (!in)
285 return 1;
286
Roman Zippelddc97ca2006-06-08 22:12:38 -0700287load:
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800288 conf_filename = name;
289 conf_lineno = 0;
290 conf_warnings = 0;
291 conf_unsaved = 0;
292
Roman Zippel669bfad2006-06-08 22:12:42 -0700293 def_flags = SYMBOL_DEF << def;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700294 for_all_symbols(i, sym) {
Roman Zippel669bfad2006-06-08 22:12:42 -0700295 sym->flags |= SYMBOL_CHANGED;
296 sym->flags &= ~(def_flags|SYMBOL_VALID);
Yann E. MORIN490f1612013-06-25 23:37:44 +0200297 if (sym_is_choice(sym))
298 sym->flags |= def_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700299 switch (sym->type) {
300 case S_INT:
301 case S_HEX:
302 case S_STRING:
Roman Zippel669bfad2006-06-08 22:12:42 -0700303 if (sym->def[def].val)
304 free(sym->def[def].val);
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400305 /* fall through */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700306 default:
Roman Zippel669bfad2006-06-08 22:12:42 -0700307 sym->def[def].val = NULL;
308 sym->def[def].tri = no;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700309 }
310 }
311
Cody Schafer1a7a8c62012-07-13 11:27:12 -0700312 while (compat_getline(&line, &line_asize, in) != -1) {
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800313 conf_lineno++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700314 sym = NULL;
Arnaud Lacombe8baefd32010-08-24 00:14:47 -0400315 if (line[0] == '#') {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400316 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700317 continue;
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400318 p = strchr(line + 2 + strlen(CONFIG_), ' ');
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 if (!p)
320 continue;
321 *p++ = 0;
322 if (strncmp(p, "is not set", 10))
323 continue;
Roman Zippel669bfad2006-06-08 22:12:42 -0700324 if (def == S_DEF_USER) {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400325 sym = sym_find(line + 2 + strlen(CONFIG_));
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200326 if (!sym) {
327 sym_add_change_count(1);
Naohiro Aota8bea7542010-10-01 04:23:17 +0900328 goto setsym;
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200329 }
Roman Zippel669bfad2006-06-08 22:12:42 -0700330 } else {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400331 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
Roman Zippel669bfad2006-06-08 22:12:42 -0700332 if (sym->type == S_UNKNOWN)
333 sym->type = S_BOOLEAN;
334 }
335 if (sym->flags & def_flags) {
Jan Engelhardtd84876f2008-01-03 23:33:44 +0100336 conf_warning("override: reassigning to symbol %s", sym->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700337 }
338 switch (sym->type) {
339 case S_BOOLEAN:
340 case S_TRISTATE:
Roman Zippel669bfad2006-06-08 22:12:42 -0700341 sym->def[def].tri = no;
342 sym->flags |= def_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700343 break;
344 default:
345 ;
346 }
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400347 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
348 p = strchr(line + strlen(CONFIG_), '=');
Linus Torvalds1da177e2005-04-16 15:20:36 -0700349 if (!p)
350 continue;
351 *p++ = 0;
352 p2 = strchr(p, '\n');
Matthew Wilcoxd3660a82006-07-13 12:54:07 -0600353 if (p2) {
354 *p2-- = 0;
355 if (*p2 == '\r')
356 *p2 = 0;
357 }
Roman Zippel669bfad2006-06-08 22:12:42 -0700358 if (def == S_DEF_USER) {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400359 sym = sym_find(line + strlen(CONFIG_));
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200360 if (!sym) {
361 sym_add_change_count(1);
Naohiro Aota8bea7542010-10-01 04:23:17 +0900362 goto setsym;
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200363 }
Roman Zippel669bfad2006-06-08 22:12:42 -0700364 } else {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400365 sym = sym_lookup(line + strlen(CONFIG_), 0);
Roman Zippel669bfad2006-06-08 22:12:42 -0700366 if (sym->type == S_UNKNOWN)
367 sym->type = S_OTHER;
368 }
369 if (sym->flags & def_flags) {
Jan Engelhardtd84876f2008-01-03 23:33:44 +0100370 conf_warning("override: reassigning to symbol %s", sym->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700371 }
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100372 if (conf_set_sym_val(sym, def, def_flags, p))
373 continue;
Arnaud Lacombe8baefd32010-08-24 00:14:47 -0400374 } else {
375 if (line[0] != '\r' && line[0] != '\n')
376 conf_warning("unexpected data");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700377 continue;
378 }
Naohiro Aota8bea7542010-10-01 04:23:17 +0900379setsym:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700380 if (sym && sym_is_choice_value(sym)) {
381 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
Roman Zippel669bfad2006-06-08 22:12:42 -0700382 switch (sym->def[def].tri) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700383 case no:
384 break;
385 case mod:
Roman Zippel669bfad2006-06-08 22:12:42 -0700386 if (cs->def[def].tri == yes) {
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800387 conf_warning("%s creates inconsistent choice state", sym->name);
Yann E. MORIN490f1612013-06-25 23:37:44 +0200388 cs->flags &= ~def_flags;
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800389 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700390 break;
391 case yes:
Jan Engelhardtd84876f2008-01-03 23:33:44 +0100392 if (cs->def[def].tri != no)
393 conf_warning("override: %s changes choice state", sym->name);
394 cs->def[def].val = sym;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700395 break;
396 }
Sam Ravnborgd6ee3572008-01-07 21:09:55 +0100397 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700398 }
399 }
Cody Schafer1a7a8c62012-07-13 11:27:12 -0700400 free(line);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700401 fclose(in);
402
403 if (modules_sym)
404 sym_calc_value(modules_sym);
Roman Zippel90389162005-11-08 21:34:49 -0800405 return 0;
406}
407
408int conf_read(const char *name)
409{
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500410 struct symbol *sym;
411 int i;
Roman Zippel90389162005-11-08 21:34:49 -0800412
Karsten Wiesebfc10002006-12-13 00:34:07 -0800413 sym_set_change_count(0);
Roman Zippelddc97ca2006-06-08 22:12:38 -0700414
Roman Zippel669bfad2006-06-08 22:12:42 -0700415 if (conf_read_simple(name, S_DEF_USER))
Roman Zippel90389162005-11-08 21:34:49 -0800416 return 1;
417
Linus Torvalds1da177e2005-04-16 15:20:36 -0700418 for_all_symbols(i, sym) {
419 sym_calc_value(sym);
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800420 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500421 continue;
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800422 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
423 /* check that calculated value agrees with saved value */
424 switch (sym->type) {
425 case S_BOOLEAN:
426 case S_TRISTATE:
Roman Zippel0c1822e2006-06-08 22:12:41 -0700427 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800428 break;
429 if (!sym_is_choice(sym))
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500430 continue;
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400431 /* fall through */
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800432 default:
Roman Zippel0c1822e2006-06-08 22:12:41 -0700433 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500434 continue;
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800435 break;
436 }
437 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
438 /* no previous value and not saved */
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500439 continue;
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800440 conf_unsaved++;
441 /* maybe print value in verbose mode... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700442 }
443
Roman Zippeld8982ba2007-07-09 11:43:58 -0700444 for_all_symbols(i, sym) {
445 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
446 /* Reset values of generates values, so they'll appear
447 * as new, if they should become visible, but that
448 * doesn't quite work if the Kconfig and the saved
449 * configuration disagree.
450 */
451 if (sym->visible == no && !conf_unsaved)
452 sym->flags &= ~SYMBOL_DEF_USER;
453 switch (sym->type) {
454 case S_STRING:
455 case S_INT:
456 case S_HEX:
457 /* Reset a string value if it's out of range */
458 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
459 break;
460 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
461 conf_unsaved++;
462 break;
463 default:
464 break;
465 }
466 }
467 }
468
Karsten Wiesebfc10002006-12-13 00:34:07 -0800469 sym_add_change_count(conf_warnings || conf_unsaved);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700470
471 return 0;
472}
473
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400474/*
475 * Kconfig configuration printer
476 *
477 * This printer is used when generating the resulting configuration after
478 * kconfig invocation and `defconfig' files. Unset symbol might be omitted by
479 * passing a non-NULL argument to the printer.
480 *
481 */
482static void
483kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
Sam Ravnborg49192f22010-07-31 23:35:33 +0200484{
Sam Ravnborg49192f22010-07-31 23:35:33 +0200485
Arnaud Lacombe0dce6312010-12-05 01:33:16 -0500486 switch (sym->type) {
Sam Ravnborg49192f22010-07-31 23:35:33 +0200487 case S_BOOLEAN:
488 case S_TRISTATE:
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400489 if (*value == 'n') {
490 bool skip_unset = (arg != NULL);
491
492 if (!skip_unset)
493 fprintf(fp, "# %s%s is not set\n",
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400494 CONFIG_, sym->name);
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400495 return;
Sam Ravnborg49192f22010-07-31 23:35:33 +0200496 }
497 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400498 default:
Sam Ravnborg49192f22010-07-31 23:35:33 +0200499 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400500 }
501
502 fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
503}
504
505static void
506kconfig_print_comment(FILE *fp, const char *value, void *arg)
507{
508 const char *p = value;
509 size_t l;
510
511 for (;;) {
512 l = strcspn(p, "\n");
513 fprintf(fp, "#");
514 if (l) {
515 fprintf(fp, " ");
Peter Foley70cc01e2011-10-22 10:48:49 -0400516 xfwrite(p, l, 1, fp);
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400517 p += l;
518 }
519 fprintf(fp, "\n");
520 if (*p++ == '\0')
521 break;
522 }
523}
524
525static struct conf_printer kconfig_printer_cb =
526{
527 .print_symbol = kconfig_print_symbol,
528 .print_comment = kconfig_print_comment,
529};
530
531/*
532 * Header printer
533 *
534 * This printer is used when generating the `include/generated/autoconf.h' file.
535 */
536static void
537header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
538{
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400539
540 switch (sym->type) {
541 case S_BOOLEAN:
Arnaud Lacombeeb4cf5a2011-07-14 15:31:07 -0400542 case S_TRISTATE: {
543 const char *suffix = "";
544
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400545 switch (*value) {
546 case 'n':
Michal Marek2a11c8e2011-07-20 17:38:57 +0200547 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400548 case 'm':
549 suffix = "_MODULE";
Arnaud Lacombeeb4cf5a2011-07-14 15:31:07 -0400550 /* fall through */
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400551 default:
Michal Marek2a11c8e2011-07-20 17:38:57 +0200552 fprintf(fp, "#define %s%s%s 1\n",
553 CONFIG_, sym->name, suffix);
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400554 }
Arnaud Lacombeeb4cf5a2011-07-14 15:31:07 -0400555 break;
556 }
557 case S_HEX: {
558 const char *prefix = "";
559
560 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
561 prefix = "0x";
562 fprintf(fp, "#define %s%s %s%s\n",
563 CONFIG_, sym->name, prefix, value);
564 break;
565 }
566 case S_STRING:
567 case S_INT:
568 fprintf(fp, "#define %s%s %s\n",
569 CONFIG_, sym->name, value);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200570 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400571 default:
572 break;
573 }
574
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400575}
576
577static void
578header_print_comment(FILE *fp, const char *value, void *arg)
579{
580 const char *p = value;
581 size_t l;
582
583 fprintf(fp, "/*\n");
584 for (;;) {
585 l = strcspn(p, "\n");
586 fprintf(fp, " *");
587 if (l) {
588 fprintf(fp, " ");
Peter Foley70cc01e2011-10-22 10:48:49 -0400589 xfwrite(p, l, 1, fp);
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400590 p += l;
591 }
592 fprintf(fp, "\n");
593 if (*p++ == '\0')
594 break;
595 }
596 fprintf(fp, " */\n");
597}
598
599static struct conf_printer header_printer_cb =
600{
601 .print_symbol = header_print_symbol,
602 .print_comment = header_print_comment,
603};
604
605/*
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400606 * Tristate printer
607 *
608 * This printer is used when generating the `include/config/tristate.conf' file.
609 */
610static void
611tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
612{
613
614 if (sym->type == S_TRISTATE && *value != 'n')
615 fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
616}
617
618static struct conf_printer tristate_printer_cb =
619{
620 .print_symbol = tristate_print_symbol,
621 .print_comment = kconfig_print_comment,
622};
623
624static void conf_write_symbol(FILE *fp, struct symbol *sym,
625 struct conf_printer *printer, void *printer_arg)
626{
627 const char *str;
628
629 switch (sym->type) {
Sam Ravnborg49192f22010-07-31 23:35:33 +0200630 case S_OTHER:
631 case S_UNKNOWN:
632 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400633 case S_STRING:
634 str = sym_get_string_value(sym);
635 str = sym_escape_string_value(str);
636 printer->print_symbol(fp, sym, str, printer_arg);
637 free((void *)str);
638 break;
639 default:
640 str = sym_get_string_value(sym);
641 printer->print_symbol(fp, sym, str, printer_arg);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200642 }
643}
644
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400645static void
646conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
647{
648 char buf[256];
649
650 snprintf(buf, sizeof(buf),
651 "\n"
652 "Automatically generated file; DO NOT EDIT.\n"
653 "%s\n",
654 rootmenu.prompt->text);
655
656 printer->print_comment(fp, buf, printer_arg);
657}
658
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200659/*
660 * Write out a minimal config.
661 * All values that has default values are skipped as this is redundant.
662 */
663int conf_write_defconfig(const char *filename)
664{
665 struct symbol *sym;
666 struct menu *menu;
667 FILE *out;
668
669 out = fopen(filename, "w");
670 if (!out)
671 return 1;
672
673 sym_clear_all_valid();
674
675 /* Traverse all menus to find all relevant symbols */
676 menu = rootmenu.list;
677
678 while (menu != NULL)
679 {
680 sym = menu->sym;
681 if (sym == NULL) {
682 if (!menu_is_visible(menu))
683 goto next_menu;
684 } else if (!sym_is_choice(sym)) {
685 sym_calc_value(sym);
686 if (!(sym->flags & SYMBOL_WRITE))
687 goto next_menu;
688 sym->flags &= ~SYMBOL_WRITE;
689 /* If we cannot change the symbol - skip */
690 if (!sym_is_changable(sym))
691 goto next_menu;
692 /* If symbol equals to default value - skip */
693 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
694 goto next_menu;
695
696 /*
697 * If symbol is a choice value and equals to the
698 * default for a choice - skip.
Sam Ravnborg84062dd2010-08-14 23:22:16 +0200699 * But only if value is bool and equal to "y" and
700 * choice is not "optional".
701 * (If choice is "optional" then all values can be "n")
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200702 */
703 if (sym_is_choice_value(sym)) {
704 struct symbol *cs;
705 struct symbol *ds;
706
707 cs = prop_get_symbol(sym_get_choice_prop(sym));
708 ds = sym_choice_default(cs);
Sam Ravnborg84062dd2010-08-14 23:22:16 +0200709 if (!sym_is_optional(cs) && sym == ds) {
Sam Ravnborg801690c2010-08-12 09:11:51 +0200710 if ((sym->type == S_BOOLEAN) &&
711 sym_get_tristate_value(sym) == yes)
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200712 goto next_menu;
713 }
714 }
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400715 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200716 }
717next_menu:
718 if (menu->list != NULL) {
719 menu = menu->list;
720 }
721 else if (menu->next != NULL) {
722 menu = menu->next;
723 } else {
724 while ((menu = menu->parent)) {
725 if (menu->next != NULL) {
726 menu = menu->next;
727 break;
728 }
729 }
730 }
731 }
732 fclose(out);
733 return 0;
734}
735
Linus Torvalds1da177e2005-04-16 15:20:36 -0700736int conf_write(const char *name)
737{
Roman Zippelc955cca2006-06-08 22:12:39 -0700738 FILE *out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700739 struct symbol *sym;
740 struct menu *menu;
741 const char *basename;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700742 const char *str;
Will Newton1408b152010-09-22 15:59:13 +0100743 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744 char *env;
745
746 dirname[0] = 0;
747 if (name && name[0]) {
748 struct stat st;
749 char *slash;
750
751 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
752 strcpy(dirname, name);
753 strcat(dirname, "/");
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700754 basename = conf_get_configname();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700755 } else if ((slash = strrchr(name, '/'))) {
756 int size = slash - name + 1;
757 memcpy(dirname, name, size);
758 dirname[size] = 0;
759 if (slash[1])
760 basename = slash + 1;
761 else
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700762 basename = conf_get_configname();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700763 } else
764 basename = name;
765 } else
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700766 basename = conf_get_configname();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700767
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700768 sprintf(newname, "%s%s", dirname, basename);
769 env = getenv("KCONFIG_OVERWRITECONFIG");
770 if (!env || !*env) {
771 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
772 out = fopen(tmpname, "w");
773 } else {
774 *tmpname = 0;
775 out = fopen(newname, "w");
776 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700777 if (!out)
778 return 1;
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700779
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400780 conf_write_heading(out, &kconfig_printer_cb, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700781
Karsten Wieseb3214292006-12-13 00:34:06 -0800782 if (!conf_get_changed())
Linus Torvalds1da177e2005-04-16 15:20:36 -0700783 sym_clear_all_valid();
784
785 menu = rootmenu.list;
786 while (menu) {
787 sym = menu->sym;
788 if (!sym) {
789 if (!menu_is_visible(menu))
790 goto next;
791 str = menu_get_prompt(menu);
792 fprintf(out, "\n"
793 "#\n"
794 "# %s\n"
795 "#\n", str);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700796 } else if (!(sym->flags & SYMBOL_CHOICE)) {
797 sym_calc_value(sym);
798 if (!(sym->flags & SYMBOL_WRITE))
799 goto next;
800 sym->flags &= ~SYMBOL_WRITE;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400801
802 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700803 }
804
Sam Ravnborg49192f22010-07-31 23:35:33 +0200805next:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806 if (menu->list) {
807 menu = menu->list;
808 continue;
809 }
810 if (menu->next)
811 menu = menu->next;
812 else while ((menu = menu->parent)) {
813 if (menu->next) {
814 menu = menu->next;
815 break;
816 }
817 }
818 }
819 fclose(out);
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700820
821 if (*tmpname) {
Sam Ravnborg9a3d0fe2006-10-01 11:48:53 +0200822 strcat(dirname, basename);
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700823 strcat(dirname, ".old");
824 rename(newname, dirname);
825 if (rename(tmpname, newname))
826 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700828
Michal Marek42368c32010-08-17 10:21:19 +0200829 conf_message(_("configuration written to %s"), newname);
Roman Zippelddc97ca2006-06-08 22:12:38 -0700830
Karsten Wiesebfc10002006-12-13 00:34:07 -0800831 sym_set_change_count(0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700832
833 return 0;
834}
Roman Zippelc955cca2006-06-08 22:12:39 -0700835
Trevor Keith4356f482009-09-18 12:49:23 -0700836static int conf_split_config(void)
Roman Zippel2e3646e2006-06-08 22:12:42 -0700837{
Markus Heidelberg12122f62009-05-18 01:36:54 +0200838 const char *name;
Will Newton1408b152010-09-22 15:59:13 +0100839 char path[PATH_MAX+1];
Roman Zippel2e3646e2006-06-08 22:12:42 -0700840 char *s, *d, c;
841 struct symbol *sym;
842 struct stat sb;
843 int res, i, fd;
844
Markus Heidelberg12122f62009-05-18 01:36:54 +0200845 name = conf_get_autoconfig_name();
Roman Zippel2e3646e2006-06-08 22:12:42 -0700846 conf_read_simple(name, S_DEF_AUTO);
847
848 if (chdir("include/config"))
849 return 1;
850
851 res = 0;
852 for_all_symbols(i, sym) {
853 sym_calc_value(sym);
854 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
855 continue;
856 if (sym->flags & SYMBOL_WRITE) {
857 if (sym->flags & SYMBOL_DEF_AUTO) {
858 /*
859 * symbol has old and new value,
860 * so compare them...
861 */
862 switch (sym->type) {
863 case S_BOOLEAN:
864 case S_TRISTATE:
865 if (sym_get_tristate_value(sym) ==
866 sym->def[S_DEF_AUTO].tri)
867 continue;
868 break;
869 case S_STRING:
870 case S_HEX:
871 case S_INT:
872 if (!strcmp(sym_get_string_value(sym),
873 sym->def[S_DEF_AUTO].val))
874 continue;
875 break;
876 default:
877 break;
878 }
879 } else {
880 /*
881 * If there is no old value, only 'no' (unset)
882 * is allowed as new value.
883 */
884 switch (sym->type) {
885 case S_BOOLEAN:
886 case S_TRISTATE:
887 if (sym_get_tristate_value(sym) == no)
888 continue;
889 break;
890 default:
891 break;
892 }
893 }
894 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
895 /* There is neither an old nor a new value. */
896 continue;
897 /* else
898 * There is an old value, but no new value ('no' (unset)
899 * isn't saved in auto.conf, so the old value is always
900 * different from 'no').
901 */
902
903 /* Replace all '_' and append ".h" */
904 s = sym->name;
905 d = path;
906 while ((c = *s++)) {
907 c = tolower(c);
908 *d++ = (c == '_') ? '/' : c;
909 }
910 strcpy(d, ".h");
911
912 /* Assume directory path already exists. */
913 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
914 if (fd == -1) {
915 if (errno != ENOENT) {
916 res = 1;
917 break;
918 }
919 /*
920 * Create directory components,
921 * unless they exist already.
922 */
923 d = path;
924 while ((d = strchr(d, '/'))) {
925 *d = 0;
926 if (stat(path, &sb) && mkdir(path, 0755)) {
927 res = 1;
928 goto out;
929 }
930 *d++ = '/';
931 }
932 /* Try it again. */
933 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
934 if (fd == -1) {
935 res = 1;
936 break;
937 }
938 }
939 close(fd);
940 }
941out:
942 if (chdir("../.."))
943 return 1;
944
945 return res;
946}
947
Roman Zippelc955cca2006-06-08 22:12:39 -0700948int conf_write_autoconf(void)
949{
950 struct symbol *sym;
Markus Heidelberg12122f62009-05-18 01:36:54 +0200951 const char *name;
Michal Marekbc081dd2009-12-07 16:38:33 +0100952 FILE *out, *tristate, *out_h;
Sam Ravnborg49192f22010-07-31 23:35:33 +0200953 int i;
Roman Zippelc955cca2006-06-08 22:12:39 -0700954
Roman Zippel2e3646e2006-06-08 22:12:42 -0700955 sym_clear_all_valid();
956
Roman Zippelc955cca2006-06-08 22:12:39 -0700957 file_write_dep("include/config/auto.conf.cmd");
958
Roman Zippel2e3646e2006-06-08 22:12:42 -0700959 if (conf_split_config())
960 return 1;
961
Roman Zippelc955cca2006-06-08 22:12:39 -0700962 out = fopen(".tmpconfig", "w");
963 if (!out)
964 return 1;
965
Michal Marekbc081dd2009-12-07 16:38:33 +0100966 tristate = fopen(".tmpconfig_tristate", "w");
967 if (!tristate) {
968 fclose(out);
969 return 1;
970 }
971
Roman Zippelc955cca2006-06-08 22:12:39 -0700972 out_h = fopen(".tmpconfig.h", "w");
973 if (!out_h) {
974 fclose(out);
Michal Marekbc081dd2009-12-07 16:38:33 +0100975 fclose(tristate);
Roman Zippelc955cca2006-06-08 22:12:39 -0700976 return 1;
977 }
978
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400979 conf_write_heading(out, &kconfig_printer_cb, NULL);
980
981 conf_write_heading(tristate, &tristate_printer_cb, NULL);
982
983 conf_write_heading(out_h, &header_printer_cb, NULL);
Roman Zippelc955cca2006-06-08 22:12:39 -0700984
Roman Zippelc955cca2006-06-08 22:12:39 -0700985 for_all_symbols(i, sym) {
Arnaud Lacombe953742c2011-08-16 01:20:20 -0400986 sym_calc_value(sym);
Paul Gortmakera9596132012-04-12 19:46:33 -0400987 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
Arnaud Lacombe953742c2011-08-16 01:20:20 -0400988 continue;
989
Paul Gortmakera9596132012-04-12 19:46:33 -0400990 /* write symbol to auto.conf, tristate and header files */
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400991 conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200992
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400993 conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);
994
995 conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
Roman Zippelc955cca2006-06-08 22:12:39 -0700996 }
997 fclose(out);
Michal Marekbc081dd2009-12-07 16:38:33 +0100998 fclose(tristate);
Roman Zippelc955cca2006-06-08 22:12:39 -0700999 fclose(out_h);
1000
1001 name = getenv("KCONFIG_AUTOHEADER");
1002 if (!name)
Sam Ravnborg264a2682009-10-18 00:49:24 +02001003 name = "include/generated/autoconf.h";
Roman Zippelc955cca2006-06-08 22:12:39 -07001004 if (rename(".tmpconfig.h", name))
1005 return 1;
Michal Marekbc081dd2009-12-07 16:38:33 +01001006 name = getenv("KCONFIG_TRISTATE");
1007 if (!name)
1008 name = "include/config/tristate.conf";
1009 if (rename(".tmpconfig_tristate", name))
1010 return 1;
Markus Heidelberg12122f62009-05-18 01:36:54 +02001011 name = conf_get_autoconfig_name();
Roman Zippelc955cca2006-06-08 22:12:39 -07001012 /*
1013 * This must be the last step, kbuild has a dependency on auto.conf
1014 * and this marks the successful completion of the previous steps.
1015 */
1016 if (rename(".tmpconfig", name))
1017 return 1;
1018
1019 return 0;
1020}
Karsten Wieseb3214292006-12-13 00:34:06 -08001021
Karsten Wiesebfc10002006-12-13 00:34:07 -08001022static int sym_change_count;
Karsten Wiese3b354c52006-12-13 00:34:08 -08001023static void (*conf_changed_callback)(void);
Karsten Wiesebfc10002006-12-13 00:34:07 -08001024
1025void sym_set_change_count(int count)
1026{
Karsten Wiese3b354c52006-12-13 00:34:08 -08001027 int _sym_change_count = sym_change_count;
Karsten Wiesebfc10002006-12-13 00:34:07 -08001028 sym_change_count = count;
Karsten Wiese3b354c52006-12-13 00:34:08 -08001029 if (conf_changed_callback &&
1030 (bool)_sym_change_count != (bool)count)
1031 conf_changed_callback();
Karsten Wiesebfc10002006-12-13 00:34:07 -08001032}
1033
1034void sym_add_change_count(int count)
1035{
Karsten Wiese3b354c52006-12-13 00:34:08 -08001036 sym_set_change_count(count + sym_change_count);
Karsten Wiesebfc10002006-12-13 00:34:07 -08001037}
1038
Karsten Wieseb3214292006-12-13 00:34:06 -08001039bool conf_get_changed(void)
1040{
1041 return sym_change_count;
1042}
Karsten Wiese3b354c52006-12-13 00:34:08 -08001043
1044void conf_set_changed_callback(void (*fn)(void))
1045{
1046 conf_changed_callback = fn;
1047}
Roman Zippeldc7862e2008-05-06 04:55:55 +02001048
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001049static bool randomize_choice_values(struct symbol *csym)
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001050{
1051 struct property *prop;
1052 struct symbol *sym;
1053 struct expr *e;
1054 int cnt, def;
1055
1056 /*
Arnaud Lacombe579fb8e2010-12-05 01:41:16 -05001057 * If choice is mod then we may have more items selected
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001058 * and if no then no-one.
1059 * In both cases stop.
1060 */
1061 if (csym->curr.tri != yes)
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001062 return false;
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001063
1064 prop = sym_get_choice_prop(csym);
1065
1066 /* count entries in choice block */
1067 cnt = 0;
1068 expr_list_for_each_sym(prop->expr, e, sym)
1069 cnt++;
1070
1071 /*
1072 * find a random value and set it to yes,
1073 * set the rest to no so we have only one set
1074 */
1075 def = (rand() % cnt);
1076
1077 cnt = 0;
1078 expr_list_for_each_sym(prop->expr, e, sym) {
1079 if (def == cnt++) {
1080 sym->def[S_DEF_USER].tri = yes;
1081 csym->def[S_DEF_USER].val = sym;
1082 }
1083 else {
1084 sym->def[S_DEF_USER].tri = no;
1085 }
Yann E. MORINe6abf122013-04-28 17:33:15 +02001086 sym->flags |= SYMBOL_DEF_USER;
1087 /* clear VALID to get value calculated */
1088 sym->flags &= ~SYMBOL_VALID;
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001089 }
1090 csym->flags |= SYMBOL_DEF_USER;
1091 /* clear VALID to get value calculated */
1092 csym->flags &= ~(SYMBOL_VALID);
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001093
1094 return true;
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001095}
1096
Arve Hjønnevågfbe98bb2013-06-06 20:37:00 -07001097void set_all_choice_values(struct symbol *csym)
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001098{
1099 struct property *prop;
1100 struct symbol *sym;
1101 struct expr *e;
1102
1103 prop = sym_get_choice_prop(csym);
1104
1105 /*
1106 * Set all non-assinged choice values to no
1107 */
1108 expr_list_for_each_sym(prop->expr, e, sym) {
1109 if (!sym_has_value(sym))
1110 sym->def[S_DEF_USER].tri = no;
1111 }
1112 csym->flags |= SYMBOL_DEF_USER;
1113 /* clear VALID to get value calculated */
Arve Hjønnevågfbe98bb2013-06-06 20:37:00 -07001114 csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES);
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001115}
Roman Zippeldc7862e2008-05-06 04:55:55 +02001116
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001117bool conf_set_all_new_symbols(enum conf_def_mode mode)
Roman Zippeldc7862e2008-05-06 04:55:55 +02001118{
1119 struct symbol *sym, *csym;
Yann E. MORINe43956e2013-04-13 17:18:36 +02001120 int i, cnt, pby, pty, ptm; /* pby: probability of boolean = y
1121 * pty: probability of tristate = y
1122 * ptm: probability of tristate = m
1123 */
1124
1125 pby = 50; pty = ptm = 33; /* can't go as the default in switch-case
1126 * below, otherwise gcc whines about
1127 * -Wmaybe-uninitialized */
1128 if (mode == def_random) {
1129 int n, p[3];
1130 char *env = getenv("KCONFIG_PROBABILITY");
1131 n = 0;
1132 while( env && *env ) {
1133 char *endp;
1134 int tmp = strtol( env, &endp, 10 );
1135 if( tmp >= 0 && tmp <= 100 ) {
1136 p[n++] = tmp;
1137 } else {
1138 errno = ERANGE;
1139 perror( "KCONFIG_PROBABILITY" );
1140 exit( 1 );
1141 }
1142 env = (*endp == ':') ? endp+1 : endp;
1143 if( n >=3 ) {
1144 break;
1145 }
1146 }
1147 switch( n ) {
1148 case 1:
1149 pby = p[0]; ptm = pby/2; pty = pby-ptm;
1150 break;
1151 case 2:
1152 pty = p[0]; ptm = p[1]; pby = pty + ptm;
1153 break;
1154 case 3:
1155 pby = p[0]; pty = p[1]; ptm = p[2];
1156 break;
1157 }
1158
1159 if( pty+ptm > 100 ) {
1160 errno = ERANGE;
1161 perror( "KCONFIG_PROBABILITY" );
1162 exit( 1 );
1163 }
1164 }
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001165 bool has_changed = false;
Roman Zippeldc7862e2008-05-06 04:55:55 +02001166
1167 for_all_symbols(i, sym) {
Yann E. MORINcfa98f22013-04-24 22:00:04 +02001168 if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID))
Roman Zippeldc7862e2008-05-06 04:55:55 +02001169 continue;
1170 switch (sym_get_type(sym)) {
1171 case S_BOOLEAN:
1172 case S_TRISTATE:
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001173 has_changed = true;
Roman Zippeldc7862e2008-05-06 04:55:55 +02001174 switch (mode) {
1175 case def_yes:
1176 sym->def[S_DEF_USER].tri = yes;
1177 break;
1178 case def_mod:
1179 sym->def[S_DEF_USER].tri = mod;
1180 break;
1181 case def_no:
Josh Triplett5d2acfc2014-04-07 15:39:09 -07001182 if (sym->flags & SYMBOL_ALLNOCONFIG_Y)
1183 sym->def[S_DEF_USER].tri = yes;
1184 else
1185 sym->def[S_DEF_USER].tri = no;
Roman Zippeldc7862e2008-05-06 04:55:55 +02001186 break;
1187 case def_random:
Yann E. MORINe43956e2013-04-13 17:18:36 +02001188 sym->def[S_DEF_USER].tri = no;
1189 cnt = rand() % 100;
1190 if (sym->type == S_TRISTATE) {
1191 if (cnt < pty)
1192 sym->def[S_DEF_USER].tri = yes;
1193 else if (cnt < (pty+ptm))
1194 sym->def[S_DEF_USER].tri = mod;
1195 } else if (cnt < pby)
1196 sym->def[S_DEF_USER].tri = yes;
Roman Zippeldc7862e2008-05-06 04:55:55 +02001197 break;
1198 default:
1199 continue;
1200 }
Sam Ravnborg184832c2009-03-15 11:05:12 +01001201 if (!(sym_is_choice(sym) && mode == def_random))
Roman Zippeldc7862e2008-05-06 04:55:55 +02001202 sym->flags |= SYMBOL_DEF_USER;
1203 break;
1204 default:
1205 break;
1206 }
1207
1208 }
1209
Al Viroce97e132008-10-26 05:12:34 +00001210 sym_clear_all_valid();
Roman Zippeldc7862e2008-05-06 04:55:55 +02001211
Sam Ravnborg184832c2009-03-15 11:05:12 +01001212 /*
1213 * We have different type of choice blocks.
Arnaud Lacombe579fb8e2010-12-05 01:41:16 -05001214 * If curr.tri equals to mod then we can select several
Sam Ravnborg184832c2009-03-15 11:05:12 +01001215 * choice symbols in one block.
1216 * In this case we do nothing.
Arnaud Lacombe579fb8e2010-12-05 01:41:16 -05001217 * If curr.tri equals yes then only one symbol can be
Sam Ravnborg184832c2009-03-15 11:05:12 +01001218 * selected in a choice block and we set it to yes,
1219 * and the rest to no.
1220 */
Arve Hjønnevågfbe98bb2013-06-06 20:37:00 -07001221 if (mode != def_random) {
1222 for_all_symbols(i, csym) {
1223 if ((sym_is_choice(csym) && !sym_has_value(csym)) ||
1224 sym_is_choice_value(csym))
1225 csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES;
1226 }
1227 }
1228
Roman Zippeldc7862e2008-05-06 04:55:55 +02001229 for_all_symbols(i, csym) {
1230 if (sym_has_value(csym) || !sym_is_choice(csym))
1231 continue;
1232
1233 sym_calc_value(csym);
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001234 if (mode == def_random)
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001235 has_changed = randomize_choice_values(csym);
1236 else {
1237 set_all_choice_values(csym);
1238 has_changed = true;
1239 }
Roman Zippeldc7862e2008-05-06 04:55:55 +02001240 }
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001241
1242 return has_changed;
Roman Zippeldc7862e2008-05-06 04:55:55 +02001243}