blob: 297b079ae4d9f0decbabc76d0f7e833e20aadadb [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
Michal Marekad8d40c2015-02-24 16:37:13 +010019struct conf_printer {
20 void (*print_symbol)(FILE *, struct symbol *, const char *, void *);
21 void (*print_comment)(FILE *, const char *, void *);
22};
23
Roman Zippelc1a0f5e2005-11-08 21:34:54 -080024static void conf_warning(const char *fmt, ...)
25 __attribute__ ((format (printf, 1, 2)));
26
Michal Marek42368c32010-08-17 10:21:19 +020027static void conf_message(const char *fmt, ...)
28 __attribute__ ((format (printf, 1, 2)));
29
Roman Zippelc1a0f5e2005-11-08 21:34:54 -080030static const char *conf_filename;
31static int conf_lineno, conf_warnings, conf_unsaved;
32
Linus Torvalds1da177e2005-04-16 15:20:36 -070033const char conf_defname[] = "arch/$ARCH/defconfig";
34
Roman Zippelc1a0f5e2005-11-08 21:34:54 -080035static void conf_warning(const char *fmt, ...)
36{
37 va_list ap;
38 va_start(ap, fmt);
39 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
40 vfprintf(stderr, fmt, ap);
41 fprintf(stderr, "\n");
42 va_end(ap);
43 conf_warnings++;
44}
45
Michal Marek42368c32010-08-17 10:21:19 +020046static void conf_default_message_callback(const char *fmt, va_list ap)
47{
48 printf("#\n# ");
49 vprintf(fmt, ap);
50 printf("\n#\n");
51}
52
53static void (*conf_message_callback) (const char *fmt, va_list ap) =
54 conf_default_message_callback;
55void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap))
56{
57 conf_message_callback = fn;
58}
59
60static void conf_message(const char *fmt, ...)
61{
62 va_list ap;
63
64 va_start(ap, fmt);
65 if (conf_message_callback)
66 conf_message_callback(fmt, ap);
Colin Ian Kingb6a2ab22015-01-12 13:18:26 +000067 va_end(ap);
Michal Marek42368c32010-08-17 10:21:19 +020068}
69
Roman Zippel14cdd3c2006-06-08 22:12:51 -070070const char *conf_get_configname(void)
71{
72 char *name = getenv("KCONFIG_CONFIG");
73
74 return name ? name : ".config";
75}
76
Markus Heidelberg12122f62009-05-18 01:36:54 +020077const char *conf_get_autoconfig_name(void)
78{
79 char *name = getenv("KCONFIG_AUTOCONFIG");
80
81 return name ? name : "include/config/auto.conf";
82}
83
J.A. Magallon48b9d032005-06-25 14:59:22 -070084static char *conf_expand_value(const char *in)
Linus Torvalds1da177e2005-04-16 15:20:36 -070085{
86 struct symbol *sym;
J.A. Magallon48b9d032005-06-25 14:59:22 -070087 const char *src;
Linus Torvalds1da177e2005-04-16 15:20:36 -070088 static char res_value[SYMBOL_MAXLENGTH];
89 char *dst, name[SYMBOL_MAXLENGTH];
90
91 res_value[0] = 0;
92 dst = name;
93 while ((src = strchr(in, '$'))) {
94 strncat(res_value, in, src - in);
95 src++;
96 dst = name;
97 while (isalnum(*src) || *src == '_')
98 *dst++ = *src++;
99 *dst = 0;
100 sym = sym_lookup(name, 0);
101 sym_calc_value(sym);
102 strcat(res_value, sym_get_string_value(sym));
103 in = src;
104 }
105 strcat(res_value, in);
106
107 return res_value;
108}
109
110char *conf_get_default_confname(void)
111{
112 struct stat buf;
113 static char fullname[PATH_MAX+1];
114 char *env, *name;
115
116 name = conf_expand_value(conf_defname);
117 env = getenv(SRCTREE);
118 if (env) {
119 sprintf(fullname, "%s/%s", env, name);
120 if (!stat(fullname, &buf))
121 return fullname;
122 }
123 return name;
124}
125
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100126static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
127{
128 char *p2;
129
130 switch (sym->type) {
131 case S_TRISTATE:
132 if (p[0] == 'm') {
133 sym->def[def].tri = mod;
134 sym->flags |= def_flags;
135 break;
136 }
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400137 /* fall through */
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100138 case S_BOOLEAN:
139 if (p[0] == 'y') {
140 sym->def[def].tri = yes;
141 sym->flags |= def_flags;
142 break;
143 }
144 if (p[0] == 'n') {
145 sym->def[def].tri = no;
146 sym->flags |= def_flags;
147 break;
148 }
Yann E. MORIN04b19b72013-08-06 18:45:07 +0200149 if (def != S_DEF_AUTO)
150 conf_warning("symbol value '%s' invalid for %s",
151 p, sym->name);
Arnaud Lacombe75f14682011-05-31 12:31:57 -0400152 return 1;
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100153 case S_OTHER:
154 if (*p != '"') {
155 for (p2 = p; *p2 && !isspace(*p2); p2++)
156 ;
157 sym->type = S_STRING;
158 goto done;
159 }
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400160 /* fall through */
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100161 case S_STRING:
162 if (*p++ != '"')
163 break;
164 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
165 if (*p2 == '"') {
166 *p2 = 0;
167 break;
168 }
169 memmove(p2, p2 + 1, strlen(p2));
170 }
171 if (!p2) {
Yann E. MORIN04b19b72013-08-06 18:45:07 +0200172 if (def != S_DEF_AUTO)
173 conf_warning("invalid string found");
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100174 return 1;
175 }
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400176 /* fall through */
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100177 case S_INT:
178 case S_HEX:
179 done:
180 if (sym_string_valid(sym, p)) {
181 sym->def[def].val = strdup(p);
182 sym->flags |= def_flags;
183 } else {
Yann E. MORIN04b19b72013-08-06 18:45:07 +0200184 if (def != S_DEF_AUTO)
185 conf_warning("symbol value '%s' invalid for %s",
186 p, sym->name);
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100187 return 1;
188 }
189 break;
190 default:
191 ;
192 }
193 return 0;
194}
195
Cody Schafer1a7a8c62012-07-13 11:27:12 -0700196#define LINE_GROWTH 16
197static int add_byte(int c, char **lineptr, size_t slen, size_t *n)
198{
199 char *nline;
200 size_t new_size = slen + 1;
201 if (new_size > *n) {
202 new_size += LINE_GROWTH - 1;
203 new_size *= 2;
204 nline = realloc(*lineptr, new_size);
205 if (!nline)
206 return -1;
207
208 *lineptr = nline;
209 *n = new_size;
210 }
211
212 (*lineptr)[slen] = c;
213
214 return 0;
215}
216
217static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream)
218{
219 char *line = *lineptr;
220 size_t slen = 0;
221
222 for (;;) {
223 int c = getc(stream);
224
225 switch (c) {
226 case '\n':
227 if (add_byte(c, &line, slen, n) < 0)
228 goto e_out;
229 slen++;
230 /* fall through */
231 case EOF:
232 if (add_byte('\0', &line, slen, n) < 0)
233 goto e_out;
234 *lineptr = line;
235 if (slen == 0)
236 return -1;
237 return slen;
238 default:
239 if (add_byte(c, &line, slen, n) < 0)
240 goto e_out;
241 slen++;
242 }
243 }
244
245e_out:
246 line[slen-1] = '\0';
247 *lineptr = line;
248 return -1;
249}
250
Roman Zippel669bfad2006-06-08 22:12:42 -0700251int conf_read_simple(const char *name, int def)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700252{
253 FILE *in = NULL;
Cody Schafer1a7a8c62012-07-13 11:27:12 -0700254 char *line = NULL;
255 size_t line_asize = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700256 char *p, *p2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700257 struct symbol *sym;
Roman Zippel669bfad2006-06-08 22:12:42 -0700258 int i, def_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700259
260 if (name) {
261 in = zconf_fopen(name);
262 } else {
Roman Zippelface4372006-06-08 22:12:45 -0700263 struct property *prop;
264
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700265 name = conf_get_configname();
Roman Zippelddc97ca2006-06-08 22:12:38 -0700266 in = zconf_fopen(name);
267 if (in)
268 goto load;
Karsten Wiesebfc10002006-12-13 00:34:07 -0800269 sym_add_change_count(1);
Al Viro6b87b702016-01-14 18:13:49 +0000270 if (!sym_defconfig_list)
Roman Zippelface4372006-06-08 22:12:45 -0700271 return 1;
272
273 for_all_defaults(sym_defconfig_list, prop) {
274 if (expr_calc_value(prop->visible.expr) == no ||
275 prop->expr->type != E_SYMBOL)
276 continue;
277 name = conf_expand_value(prop->expr->left.sym->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700278 in = zconf_fopen(name);
279 if (in) {
Michal Marek42368c32010-08-17 10:21:19 +0200280 conf_message(_("using defaults found in %s"),
281 name);
Roman Zippelddc97ca2006-06-08 22:12:38 -0700282 goto load;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283 }
284 }
285 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700286 if (!in)
287 return 1;
288
Roman Zippelddc97ca2006-06-08 22:12:38 -0700289load:
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800290 conf_filename = name;
291 conf_lineno = 0;
292 conf_warnings = 0;
293 conf_unsaved = 0;
294
Roman Zippel669bfad2006-06-08 22:12:42 -0700295 def_flags = SYMBOL_DEF << def;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296 for_all_symbols(i, sym) {
Roman Zippel669bfad2006-06-08 22:12:42 -0700297 sym->flags |= SYMBOL_CHANGED;
298 sym->flags &= ~(def_flags|SYMBOL_VALID);
Yann E. MORIN490f1612013-06-25 23:37:44 +0200299 if (sym_is_choice(sym))
300 sym->flags |= def_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700301 switch (sym->type) {
302 case S_INT:
303 case S_HEX:
304 case S_STRING:
Roman Zippel669bfad2006-06-08 22:12:42 -0700305 if (sym->def[def].val)
306 free(sym->def[def].val);
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400307 /* fall through */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 default:
Roman Zippel669bfad2006-06-08 22:12:42 -0700309 sym->def[def].val = NULL;
310 sym->def[def].tri = no;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700311 }
312 }
313
Cody Schafer1a7a8c62012-07-13 11:27:12 -0700314 while (compat_getline(&line, &line_asize, in) != -1) {
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800315 conf_lineno++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 sym = NULL;
Arnaud Lacombe8baefd32010-08-24 00:14:47 -0400317 if (line[0] == '#') {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400318 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700319 continue;
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400320 p = strchr(line + 2 + strlen(CONFIG_), ' ');
Linus Torvalds1da177e2005-04-16 15:20:36 -0700321 if (!p)
322 continue;
323 *p++ = 0;
324 if (strncmp(p, "is not set", 10))
325 continue;
Roman Zippel669bfad2006-06-08 22:12:42 -0700326 if (def == S_DEF_USER) {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400327 sym = sym_find(line + 2 + strlen(CONFIG_));
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200328 if (!sym) {
329 sym_add_change_count(1);
Naohiro Aota8bea7542010-10-01 04:23:17 +0900330 goto setsym;
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200331 }
Roman Zippel669bfad2006-06-08 22:12:42 -0700332 } else {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400333 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
Roman Zippel669bfad2006-06-08 22:12:42 -0700334 if (sym->type == S_UNKNOWN)
335 sym->type = S_BOOLEAN;
336 }
337 if (sym->flags & def_flags) {
Jan Engelhardtd84876f2008-01-03 23:33:44 +0100338 conf_warning("override: reassigning to symbol %s", sym->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700339 }
340 switch (sym->type) {
341 case S_BOOLEAN:
342 case S_TRISTATE:
Roman Zippel669bfad2006-06-08 22:12:42 -0700343 sym->def[def].tri = no;
344 sym->flags |= def_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700345 break;
346 default:
347 ;
348 }
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400349 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
350 p = strchr(line + strlen(CONFIG_), '=');
Linus Torvalds1da177e2005-04-16 15:20:36 -0700351 if (!p)
352 continue;
353 *p++ = 0;
354 p2 = strchr(p, '\n');
Matthew Wilcoxd3660a82006-07-13 12:54:07 -0600355 if (p2) {
356 *p2-- = 0;
357 if (*p2 == '\r')
358 *p2 = 0;
359 }
Roman Zippel669bfad2006-06-08 22:12:42 -0700360 if (def == S_DEF_USER) {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400361 sym = sym_find(line + strlen(CONFIG_));
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200362 if (!sym) {
363 sym_add_change_count(1);
Naohiro Aota8bea7542010-10-01 04:23:17 +0900364 goto setsym;
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200365 }
Roman Zippel669bfad2006-06-08 22:12:42 -0700366 } else {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400367 sym = sym_lookup(line + strlen(CONFIG_), 0);
Roman Zippel669bfad2006-06-08 22:12:42 -0700368 if (sym->type == S_UNKNOWN)
369 sym->type = S_OTHER;
370 }
371 if (sym->flags & def_flags) {
Jan Engelhardtd84876f2008-01-03 23:33:44 +0100372 conf_warning("override: reassigning to symbol %s", sym->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700373 }
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100374 if (conf_set_sym_val(sym, def, def_flags, p))
375 continue;
Arnaud Lacombe8baefd32010-08-24 00:14:47 -0400376 } else {
377 if (line[0] != '\r' && line[0] != '\n')
Paul Bollea4663912016-03-16 21:27:27 +0100378 conf_warning("unexpected data: %.*s",
379 (int)strcspn(line, "\r\n"), line);
380
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381 continue;
382 }
Naohiro Aota8bea7542010-10-01 04:23:17 +0900383setsym:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700384 if (sym && sym_is_choice_value(sym)) {
385 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
Roman Zippel669bfad2006-06-08 22:12:42 -0700386 switch (sym->def[def].tri) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700387 case no:
388 break;
389 case mod:
Roman Zippel669bfad2006-06-08 22:12:42 -0700390 if (cs->def[def].tri == yes) {
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800391 conf_warning("%s creates inconsistent choice state", sym->name);
Yann E. MORIN490f1612013-06-25 23:37:44 +0200392 cs->flags &= ~def_flags;
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800393 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 break;
395 case yes:
Jan Engelhardtd84876f2008-01-03 23:33:44 +0100396 if (cs->def[def].tri != no)
397 conf_warning("override: %s changes choice state", sym->name);
398 cs->def[def].val = sym;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700399 break;
400 }
Sam Ravnborgd6ee3572008-01-07 21:09:55 +0100401 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700402 }
403 }
Cody Schafer1a7a8c62012-07-13 11:27:12 -0700404 free(line);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700405 fclose(in);
Roman Zippel90389162005-11-08 21:34:49 -0800406 return 0;
407}
408
409int conf_read(const char *name)
410{
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500411 struct symbol *sym;
412 int i;
Roman Zippel90389162005-11-08 21:34:49 -0800413
Karsten Wiesebfc10002006-12-13 00:34:07 -0800414 sym_set_change_count(0);
Roman Zippelddc97ca2006-06-08 22:12:38 -0700415
Al Viro6b87b702016-01-14 18:13:49 +0000416 if (conf_read_simple(name, S_DEF_USER)) {
417 sym_calc_value(modules_sym);
Roman Zippel90389162005-11-08 21:34:49 -0800418 return 1;
Al Viro6b87b702016-01-14 18:13:49 +0000419 }
420
421 sym_calc_value(modules_sym);
Roman Zippel90389162005-11-08 21:34:49 -0800422
Linus Torvalds1da177e2005-04-16 15:20:36 -0700423 for_all_symbols(i, sym) {
424 sym_calc_value(sym);
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800425 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500426 continue;
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800427 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
428 /* check that calculated value agrees with saved value */
429 switch (sym->type) {
430 case S_BOOLEAN:
431 case S_TRISTATE:
Roman Zippel0c1822e2006-06-08 22:12:41 -0700432 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800433 break;
434 if (!sym_is_choice(sym))
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500435 continue;
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400436 /* fall through */
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800437 default:
Roman Zippel0c1822e2006-06-08 22:12:41 -0700438 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500439 continue;
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800440 break;
441 }
442 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
443 /* no previous value and not saved */
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500444 continue;
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800445 conf_unsaved++;
446 /* maybe print value in verbose mode... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700447 }
448
Roman Zippeld8982ba2007-07-09 11:43:58 -0700449 for_all_symbols(i, sym) {
450 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
451 /* Reset values of generates values, so they'll appear
452 * as new, if they should become visible, but that
453 * doesn't quite work if the Kconfig and the saved
454 * configuration disagree.
455 */
456 if (sym->visible == no && !conf_unsaved)
457 sym->flags &= ~SYMBOL_DEF_USER;
458 switch (sym->type) {
459 case S_STRING:
460 case S_INT:
461 case S_HEX:
462 /* Reset a string value if it's out of range */
463 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
464 break;
465 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
466 conf_unsaved++;
467 break;
468 default:
469 break;
470 }
471 }
472 }
473
Karsten Wiesebfc10002006-12-13 00:34:07 -0800474 sym_add_change_count(conf_warnings || conf_unsaved);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700475
476 return 0;
477}
478
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400479/*
480 * Kconfig configuration printer
481 *
482 * This printer is used when generating the resulting configuration after
483 * kconfig invocation and `defconfig' files. Unset symbol might be omitted by
484 * passing a non-NULL argument to the printer.
485 *
486 */
487static void
488kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
Sam Ravnborg49192f22010-07-31 23:35:33 +0200489{
Sam Ravnborg49192f22010-07-31 23:35:33 +0200490
Arnaud Lacombe0dce6312010-12-05 01:33:16 -0500491 switch (sym->type) {
Sam Ravnborg49192f22010-07-31 23:35:33 +0200492 case S_BOOLEAN:
493 case S_TRISTATE:
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400494 if (*value == 'n') {
495 bool skip_unset = (arg != NULL);
496
497 if (!skip_unset)
498 fprintf(fp, "# %s%s is not set\n",
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400499 CONFIG_, sym->name);
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400500 return;
Sam Ravnborg49192f22010-07-31 23:35:33 +0200501 }
502 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400503 default:
Sam Ravnborg49192f22010-07-31 23:35:33 +0200504 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400505 }
506
507 fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
508}
509
510static void
511kconfig_print_comment(FILE *fp, const char *value, void *arg)
512{
513 const char *p = value;
514 size_t l;
515
516 for (;;) {
517 l = strcspn(p, "\n");
518 fprintf(fp, "#");
519 if (l) {
520 fprintf(fp, " ");
Peter Foley70cc01e2011-10-22 10:48:49 -0400521 xfwrite(p, l, 1, fp);
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400522 p += l;
523 }
524 fprintf(fp, "\n");
525 if (*p++ == '\0')
526 break;
527 }
528}
529
530static struct conf_printer kconfig_printer_cb =
531{
532 .print_symbol = kconfig_print_symbol,
533 .print_comment = kconfig_print_comment,
534};
535
536/*
537 * Header printer
538 *
539 * This printer is used when generating the `include/generated/autoconf.h' file.
540 */
541static void
542header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
543{
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400544
545 switch (sym->type) {
546 case S_BOOLEAN:
Arnaud Lacombeeb4cf5a2011-07-14 15:31:07 -0400547 case S_TRISTATE: {
548 const char *suffix = "";
549
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400550 switch (*value) {
551 case 'n':
Michal Marek2a11c8e2011-07-20 17:38:57 +0200552 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400553 case 'm':
554 suffix = "_MODULE";
Arnaud Lacombeeb4cf5a2011-07-14 15:31:07 -0400555 /* fall through */
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400556 default:
Michal Marek2a11c8e2011-07-20 17:38:57 +0200557 fprintf(fp, "#define %s%s%s 1\n",
558 CONFIG_, sym->name, suffix);
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400559 }
Arnaud Lacombeeb4cf5a2011-07-14 15:31:07 -0400560 break;
561 }
562 case S_HEX: {
563 const char *prefix = "";
564
565 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
566 prefix = "0x";
567 fprintf(fp, "#define %s%s %s%s\n",
568 CONFIG_, sym->name, prefix, value);
569 break;
570 }
571 case S_STRING:
572 case S_INT:
573 fprintf(fp, "#define %s%s %s\n",
574 CONFIG_, sym->name, value);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200575 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400576 default:
577 break;
578 }
579
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400580}
581
582static void
583header_print_comment(FILE *fp, const char *value, void *arg)
584{
585 const char *p = value;
586 size_t l;
587
588 fprintf(fp, "/*\n");
589 for (;;) {
590 l = strcspn(p, "\n");
591 fprintf(fp, " *");
592 if (l) {
593 fprintf(fp, " ");
Peter Foley70cc01e2011-10-22 10:48:49 -0400594 xfwrite(p, l, 1, fp);
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400595 p += l;
596 }
597 fprintf(fp, "\n");
598 if (*p++ == '\0')
599 break;
600 }
601 fprintf(fp, " */\n");
602}
603
604static struct conf_printer header_printer_cb =
605{
606 .print_symbol = header_print_symbol,
607 .print_comment = header_print_comment,
608};
609
610/*
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400611 * Tristate printer
612 *
613 * This printer is used when generating the `include/config/tristate.conf' file.
614 */
615static void
616tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
617{
618
619 if (sym->type == S_TRISTATE && *value != 'n')
620 fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
621}
622
623static struct conf_printer tristate_printer_cb =
624{
625 .print_symbol = tristate_print_symbol,
626 .print_comment = kconfig_print_comment,
627};
628
629static void conf_write_symbol(FILE *fp, struct symbol *sym,
630 struct conf_printer *printer, void *printer_arg)
631{
632 const char *str;
633
634 switch (sym->type) {
Sam Ravnborg49192f22010-07-31 23:35:33 +0200635 case S_OTHER:
636 case S_UNKNOWN:
637 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400638 case S_STRING:
639 str = sym_get_string_value(sym);
640 str = sym_escape_string_value(str);
641 printer->print_symbol(fp, sym, str, printer_arg);
642 free((void *)str);
643 break;
644 default:
645 str = sym_get_string_value(sym);
646 printer->print_symbol(fp, sym, str, printer_arg);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200647 }
648}
649
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400650static void
651conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
652{
653 char buf[256];
654
655 snprintf(buf, sizeof(buf),
656 "\n"
657 "Automatically generated file; DO NOT EDIT.\n"
658 "%s\n",
659 rootmenu.prompt->text);
660
661 printer->print_comment(fp, buf, printer_arg);
662}
663
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200664/*
665 * Write out a minimal config.
666 * All values that has default values are skipped as this is redundant.
667 */
668int conf_write_defconfig(const char *filename)
669{
670 struct symbol *sym;
671 struct menu *menu;
672 FILE *out;
673
674 out = fopen(filename, "w");
675 if (!out)
676 return 1;
677
678 sym_clear_all_valid();
679
680 /* Traverse all menus to find all relevant symbols */
681 menu = rootmenu.list;
682
683 while (menu != NULL)
684 {
685 sym = menu->sym;
686 if (sym == NULL) {
687 if (!menu_is_visible(menu))
688 goto next_menu;
689 } else if (!sym_is_choice(sym)) {
690 sym_calc_value(sym);
691 if (!(sym->flags & SYMBOL_WRITE))
692 goto next_menu;
693 sym->flags &= ~SYMBOL_WRITE;
694 /* If we cannot change the symbol - skip */
695 if (!sym_is_changable(sym))
696 goto next_menu;
697 /* If symbol equals to default value - skip */
698 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
699 goto next_menu;
700
701 /*
702 * If symbol is a choice value and equals to the
703 * default for a choice - skip.
Sam Ravnborg84062dd2010-08-14 23:22:16 +0200704 * But only if value is bool and equal to "y" and
705 * choice is not "optional".
706 * (If choice is "optional" then all values can be "n")
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200707 */
708 if (sym_is_choice_value(sym)) {
709 struct symbol *cs;
710 struct symbol *ds;
711
712 cs = prop_get_symbol(sym_get_choice_prop(sym));
713 ds = sym_choice_default(cs);
Sam Ravnborg84062dd2010-08-14 23:22:16 +0200714 if (!sym_is_optional(cs) && sym == ds) {
Sam Ravnborg801690c2010-08-12 09:11:51 +0200715 if ((sym->type == S_BOOLEAN) &&
716 sym_get_tristate_value(sym) == yes)
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200717 goto next_menu;
718 }
719 }
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400720 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200721 }
722next_menu:
723 if (menu->list != NULL) {
724 menu = menu->list;
725 }
726 else if (menu->next != NULL) {
727 menu = menu->next;
728 } else {
729 while ((menu = menu->parent)) {
730 if (menu->next != NULL) {
731 menu = menu->next;
732 break;
733 }
734 }
735 }
736 }
737 fclose(out);
738 return 0;
739}
740
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741int conf_write(const char *name)
742{
Roman Zippelc955cca2006-06-08 22:12:39 -0700743 FILE *out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700744 struct symbol *sym;
745 struct menu *menu;
746 const char *basename;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700747 const char *str;
Will Newton1408b152010-09-22 15:59:13 +0100748 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700749 char *env;
750
751 dirname[0] = 0;
752 if (name && name[0]) {
753 struct stat st;
754 char *slash;
755
756 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
757 strcpy(dirname, name);
758 strcat(dirname, "/");
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700759 basename = conf_get_configname();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700760 } else if ((slash = strrchr(name, '/'))) {
761 int size = slash - name + 1;
762 memcpy(dirname, name, size);
763 dirname[size] = 0;
764 if (slash[1])
765 basename = slash + 1;
766 else
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700767 basename = conf_get_configname();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700768 } else
769 basename = name;
770 } else
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700771 basename = conf_get_configname();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700772
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700773 sprintf(newname, "%s%s", dirname, basename);
774 env = getenv("KCONFIG_OVERWRITECONFIG");
775 if (!env || !*env) {
776 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
777 out = fopen(tmpname, "w");
778 } else {
779 *tmpname = 0;
780 out = fopen(newname, "w");
781 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782 if (!out)
783 return 1;
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700784
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400785 conf_write_heading(out, &kconfig_printer_cb, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700786
Karsten Wieseb3214292006-12-13 00:34:06 -0800787 if (!conf_get_changed())
Linus Torvalds1da177e2005-04-16 15:20:36 -0700788 sym_clear_all_valid();
789
790 menu = rootmenu.list;
791 while (menu) {
792 sym = menu->sym;
793 if (!sym) {
794 if (!menu_is_visible(menu))
795 goto next;
796 str = menu_get_prompt(menu);
797 fprintf(out, "\n"
798 "#\n"
799 "# %s\n"
800 "#\n", str);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700801 } else if (!(sym->flags & SYMBOL_CHOICE)) {
802 sym_calc_value(sym);
803 if (!(sym->flags & SYMBOL_WRITE))
804 goto next;
805 sym->flags &= ~SYMBOL_WRITE;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400806
807 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700808 }
809
Sam Ravnborg49192f22010-07-31 23:35:33 +0200810next:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811 if (menu->list) {
812 menu = menu->list;
813 continue;
814 }
815 if (menu->next)
816 menu = menu->next;
817 else while ((menu = menu->parent)) {
818 if (menu->next) {
819 menu = menu->next;
820 break;
821 }
822 }
823 }
824 fclose(out);
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700825
826 if (*tmpname) {
Sam Ravnborg9a3d0fe2006-10-01 11:48:53 +0200827 strcat(dirname, basename);
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700828 strcat(dirname, ".old");
829 rename(newname, dirname);
830 if (rename(tmpname, newname))
831 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700832 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700833
Michal Marek42368c32010-08-17 10:21:19 +0200834 conf_message(_("configuration written to %s"), newname);
Roman Zippelddc97ca2006-06-08 22:12:38 -0700835
Karsten Wiesebfc10002006-12-13 00:34:07 -0800836 sym_set_change_count(0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700837
838 return 0;
839}
Roman Zippelc955cca2006-06-08 22:12:39 -0700840
Trevor Keith4356f482009-09-18 12:49:23 -0700841static int conf_split_config(void)
Roman Zippel2e3646e2006-06-08 22:12:42 -0700842{
Markus Heidelberg12122f62009-05-18 01:36:54 +0200843 const char *name;
Will Newton1408b152010-09-22 15:59:13 +0100844 char path[PATH_MAX+1];
Roman Zippel2e3646e2006-06-08 22:12:42 -0700845 char *s, *d, c;
846 struct symbol *sym;
847 struct stat sb;
848 int res, i, fd;
849
Markus Heidelberg12122f62009-05-18 01:36:54 +0200850 name = conf_get_autoconfig_name();
Roman Zippel2e3646e2006-06-08 22:12:42 -0700851 conf_read_simple(name, S_DEF_AUTO);
Al Viro6b87b702016-01-14 18:13:49 +0000852 sym_calc_value(modules_sym);
Roman Zippel2e3646e2006-06-08 22:12:42 -0700853
854 if (chdir("include/config"))
855 return 1;
856
857 res = 0;
858 for_all_symbols(i, sym) {
859 sym_calc_value(sym);
860 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
861 continue;
862 if (sym->flags & SYMBOL_WRITE) {
863 if (sym->flags & SYMBOL_DEF_AUTO) {
864 /*
865 * symbol has old and new value,
866 * so compare them...
867 */
868 switch (sym->type) {
869 case S_BOOLEAN:
870 case S_TRISTATE:
871 if (sym_get_tristate_value(sym) ==
872 sym->def[S_DEF_AUTO].tri)
873 continue;
874 break;
875 case S_STRING:
876 case S_HEX:
877 case S_INT:
878 if (!strcmp(sym_get_string_value(sym),
879 sym->def[S_DEF_AUTO].val))
880 continue;
881 break;
882 default:
883 break;
884 }
885 } else {
886 /*
887 * If there is no old value, only 'no' (unset)
888 * is allowed as new value.
889 */
890 switch (sym->type) {
891 case S_BOOLEAN:
892 case S_TRISTATE:
893 if (sym_get_tristate_value(sym) == no)
894 continue;
895 break;
896 default:
897 break;
898 }
899 }
900 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
901 /* There is neither an old nor a new value. */
902 continue;
903 /* else
904 * There is an old value, but no new value ('no' (unset)
905 * isn't saved in auto.conf, so the old value is always
906 * different from 'no').
907 */
908
909 /* Replace all '_' and append ".h" */
910 s = sym->name;
911 d = path;
912 while ((c = *s++)) {
913 c = tolower(c);
914 *d++ = (c == '_') ? '/' : c;
915 }
916 strcpy(d, ".h");
917
918 /* Assume directory path already exists. */
919 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
920 if (fd == -1) {
921 if (errno != ENOENT) {
922 res = 1;
923 break;
924 }
925 /*
926 * Create directory components,
927 * unless they exist already.
928 */
929 d = path;
930 while ((d = strchr(d, '/'))) {
931 *d = 0;
932 if (stat(path, &sb) && mkdir(path, 0755)) {
933 res = 1;
934 goto out;
935 }
936 *d++ = '/';
937 }
938 /* Try it again. */
939 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
940 if (fd == -1) {
941 res = 1;
942 break;
943 }
944 }
945 close(fd);
946 }
947out:
948 if (chdir("../.."))
949 return 1;
950
951 return res;
952}
953
Roman Zippelc955cca2006-06-08 22:12:39 -0700954int conf_write_autoconf(void)
955{
956 struct symbol *sym;
Markus Heidelberg12122f62009-05-18 01:36:54 +0200957 const char *name;
Michal Marekbc081dd2009-12-07 16:38:33 +0100958 FILE *out, *tristate, *out_h;
Sam Ravnborg49192f22010-07-31 23:35:33 +0200959 int i;
Roman Zippelc955cca2006-06-08 22:12:39 -0700960
Roman Zippel2e3646e2006-06-08 22:12:42 -0700961 sym_clear_all_valid();
962
Roman Zippelc955cca2006-06-08 22:12:39 -0700963 file_write_dep("include/config/auto.conf.cmd");
964
Roman Zippel2e3646e2006-06-08 22:12:42 -0700965 if (conf_split_config())
966 return 1;
967
Roman Zippelc955cca2006-06-08 22:12:39 -0700968 out = fopen(".tmpconfig", "w");
969 if (!out)
970 return 1;
971
Michal Marekbc081dd2009-12-07 16:38:33 +0100972 tristate = fopen(".tmpconfig_tristate", "w");
973 if (!tristate) {
974 fclose(out);
975 return 1;
976 }
977
Roman Zippelc955cca2006-06-08 22:12:39 -0700978 out_h = fopen(".tmpconfig.h", "w");
979 if (!out_h) {
980 fclose(out);
Michal Marekbc081dd2009-12-07 16:38:33 +0100981 fclose(tristate);
Roman Zippelc955cca2006-06-08 22:12:39 -0700982 return 1;
983 }
984
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400985 conf_write_heading(out, &kconfig_printer_cb, NULL);
986
987 conf_write_heading(tristate, &tristate_printer_cb, NULL);
988
989 conf_write_heading(out_h, &header_printer_cb, NULL);
Roman Zippelc955cca2006-06-08 22:12:39 -0700990
Roman Zippelc955cca2006-06-08 22:12:39 -0700991 for_all_symbols(i, sym) {
Arnaud Lacombe953742c2011-08-16 01:20:20 -0400992 sym_calc_value(sym);
Paul Gortmakera9596132012-04-12 19:46:33 -0400993 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
Arnaud Lacombe953742c2011-08-16 01:20:20 -0400994 continue;
995
Paul Gortmakera9596132012-04-12 19:46:33 -0400996 /* write symbol to auto.conf, tristate and header files */
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400997 conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200998
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400999 conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);
1000
1001 conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
Roman Zippelc955cca2006-06-08 22:12:39 -07001002 }
1003 fclose(out);
Michal Marekbc081dd2009-12-07 16:38:33 +01001004 fclose(tristate);
Roman Zippelc955cca2006-06-08 22:12:39 -07001005 fclose(out_h);
1006
1007 name = getenv("KCONFIG_AUTOHEADER");
1008 if (!name)
Sam Ravnborg264a2682009-10-18 00:49:24 +02001009 name = "include/generated/autoconf.h";
Roman Zippelc955cca2006-06-08 22:12:39 -07001010 if (rename(".tmpconfig.h", name))
1011 return 1;
Michal Marekbc081dd2009-12-07 16:38:33 +01001012 name = getenv("KCONFIG_TRISTATE");
1013 if (!name)
1014 name = "include/config/tristate.conf";
1015 if (rename(".tmpconfig_tristate", name))
1016 return 1;
Markus Heidelberg12122f62009-05-18 01:36:54 +02001017 name = conf_get_autoconfig_name();
Roman Zippelc955cca2006-06-08 22:12:39 -07001018 /*
1019 * This must be the last step, kbuild has a dependency on auto.conf
1020 * and this marks the successful completion of the previous steps.
1021 */
1022 if (rename(".tmpconfig", name))
1023 return 1;
1024
1025 return 0;
1026}
Karsten Wieseb3214292006-12-13 00:34:06 -08001027
Karsten Wiesebfc10002006-12-13 00:34:07 -08001028static int sym_change_count;
Karsten Wiese3b354c52006-12-13 00:34:08 -08001029static void (*conf_changed_callback)(void);
Karsten Wiesebfc10002006-12-13 00:34:07 -08001030
1031void sym_set_change_count(int count)
1032{
Karsten Wiese3b354c52006-12-13 00:34:08 -08001033 int _sym_change_count = sym_change_count;
Karsten Wiesebfc10002006-12-13 00:34:07 -08001034 sym_change_count = count;
Karsten Wiese3b354c52006-12-13 00:34:08 -08001035 if (conf_changed_callback &&
1036 (bool)_sym_change_count != (bool)count)
1037 conf_changed_callback();
Karsten Wiesebfc10002006-12-13 00:34:07 -08001038}
1039
1040void sym_add_change_count(int count)
1041{
Karsten Wiese3b354c52006-12-13 00:34:08 -08001042 sym_set_change_count(count + sym_change_count);
Karsten Wiesebfc10002006-12-13 00:34:07 -08001043}
1044
Karsten Wieseb3214292006-12-13 00:34:06 -08001045bool conf_get_changed(void)
1046{
1047 return sym_change_count;
1048}
Karsten Wiese3b354c52006-12-13 00:34:08 -08001049
1050void conf_set_changed_callback(void (*fn)(void))
1051{
1052 conf_changed_callback = fn;
1053}
Roman Zippeldc7862e2008-05-06 04:55:55 +02001054
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001055static bool randomize_choice_values(struct symbol *csym)
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001056{
1057 struct property *prop;
1058 struct symbol *sym;
1059 struct expr *e;
1060 int cnt, def;
1061
1062 /*
Arnaud Lacombe579fb8e2010-12-05 01:41:16 -05001063 * If choice is mod then we may have more items selected
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001064 * and if no then no-one.
1065 * In both cases stop.
1066 */
1067 if (csym->curr.tri != yes)
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001068 return false;
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001069
1070 prop = sym_get_choice_prop(csym);
1071
1072 /* count entries in choice block */
1073 cnt = 0;
1074 expr_list_for_each_sym(prop->expr, e, sym)
1075 cnt++;
1076
1077 /*
1078 * find a random value and set it to yes,
1079 * set the rest to no so we have only one set
1080 */
1081 def = (rand() % cnt);
1082
1083 cnt = 0;
1084 expr_list_for_each_sym(prop->expr, e, sym) {
1085 if (def == cnt++) {
1086 sym->def[S_DEF_USER].tri = yes;
1087 csym->def[S_DEF_USER].val = sym;
1088 }
1089 else {
1090 sym->def[S_DEF_USER].tri = no;
1091 }
Yann E. MORINe6abf122013-04-28 17:33:15 +02001092 sym->flags |= SYMBOL_DEF_USER;
1093 /* clear VALID to get value calculated */
1094 sym->flags &= ~SYMBOL_VALID;
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001095 }
1096 csym->flags |= SYMBOL_DEF_USER;
1097 /* clear VALID to get value calculated */
1098 csym->flags &= ~(SYMBOL_VALID);
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001099
1100 return true;
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001101}
1102
Arve Hjønnevågfbe98bb2013-06-06 20:37:00 -07001103void set_all_choice_values(struct symbol *csym)
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001104{
1105 struct property *prop;
1106 struct symbol *sym;
1107 struct expr *e;
1108
1109 prop = sym_get_choice_prop(csym);
1110
1111 /*
1112 * Set all non-assinged choice values to no
1113 */
1114 expr_list_for_each_sym(prop->expr, e, sym) {
1115 if (!sym_has_value(sym))
1116 sym->def[S_DEF_USER].tri = no;
1117 }
1118 csym->flags |= SYMBOL_DEF_USER;
1119 /* clear VALID to get value calculated */
Arve Hjønnevågfbe98bb2013-06-06 20:37:00 -07001120 csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES);
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001121}
Roman Zippeldc7862e2008-05-06 04:55:55 +02001122
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001123bool conf_set_all_new_symbols(enum conf_def_mode mode)
Roman Zippeldc7862e2008-05-06 04:55:55 +02001124{
1125 struct symbol *sym, *csym;
Yann E. MORINe43956e2013-04-13 17:18:36 +02001126 int i, cnt, pby, pty, ptm; /* pby: probability of boolean = y
1127 * pty: probability of tristate = y
1128 * ptm: probability of tristate = m
1129 */
1130
1131 pby = 50; pty = ptm = 33; /* can't go as the default in switch-case
1132 * below, otherwise gcc whines about
1133 * -Wmaybe-uninitialized */
1134 if (mode == def_random) {
1135 int n, p[3];
1136 char *env = getenv("KCONFIG_PROBABILITY");
1137 n = 0;
1138 while( env && *env ) {
1139 char *endp;
1140 int tmp = strtol( env, &endp, 10 );
1141 if( tmp >= 0 && tmp <= 100 ) {
1142 p[n++] = tmp;
1143 } else {
1144 errno = ERANGE;
1145 perror( "KCONFIG_PROBABILITY" );
1146 exit( 1 );
1147 }
1148 env = (*endp == ':') ? endp+1 : endp;
1149 if( n >=3 ) {
1150 break;
1151 }
1152 }
1153 switch( n ) {
1154 case 1:
1155 pby = p[0]; ptm = pby/2; pty = pby-ptm;
1156 break;
1157 case 2:
1158 pty = p[0]; ptm = p[1]; pby = pty + ptm;
1159 break;
1160 case 3:
1161 pby = p[0]; pty = p[1]; ptm = p[2];
1162 break;
1163 }
1164
1165 if( pty+ptm > 100 ) {
1166 errno = ERANGE;
1167 perror( "KCONFIG_PROBABILITY" );
1168 exit( 1 );
1169 }
1170 }
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001171 bool has_changed = false;
Roman Zippeldc7862e2008-05-06 04:55:55 +02001172
1173 for_all_symbols(i, sym) {
Yann E. MORINcfa98f22013-04-24 22:00:04 +02001174 if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID))
Roman Zippeldc7862e2008-05-06 04:55:55 +02001175 continue;
1176 switch (sym_get_type(sym)) {
1177 case S_BOOLEAN:
1178 case S_TRISTATE:
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001179 has_changed = true;
Roman Zippeldc7862e2008-05-06 04:55:55 +02001180 switch (mode) {
1181 case def_yes:
1182 sym->def[S_DEF_USER].tri = yes;
1183 break;
1184 case def_mod:
1185 sym->def[S_DEF_USER].tri = mod;
1186 break;
1187 case def_no:
Josh Triplett5d2acfc2014-04-07 15:39:09 -07001188 if (sym->flags & SYMBOL_ALLNOCONFIG_Y)
1189 sym->def[S_DEF_USER].tri = yes;
1190 else
1191 sym->def[S_DEF_USER].tri = no;
Roman Zippeldc7862e2008-05-06 04:55:55 +02001192 break;
1193 case def_random:
Yann E. MORINe43956e2013-04-13 17:18:36 +02001194 sym->def[S_DEF_USER].tri = no;
1195 cnt = rand() % 100;
1196 if (sym->type == S_TRISTATE) {
1197 if (cnt < pty)
1198 sym->def[S_DEF_USER].tri = yes;
1199 else if (cnt < (pty+ptm))
1200 sym->def[S_DEF_USER].tri = mod;
1201 } else if (cnt < pby)
1202 sym->def[S_DEF_USER].tri = yes;
Roman Zippeldc7862e2008-05-06 04:55:55 +02001203 break;
1204 default:
1205 continue;
1206 }
Sam Ravnborg184832c2009-03-15 11:05:12 +01001207 if (!(sym_is_choice(sym) && mode == def_random))
Roman Zippeldc7862e2008-05-06 04:55:55 +02001208 sym->flags |= SYMBOL_DEF_USER;
1209 break;
1210 default:
1211 break;
1212 }
1213
1214 }
1215
Al Viroce97e132008-10-26 05:12:34 +00001216 sym_clear_all_valid();
Roman Zippeldc7862e2008-05-06 04:55:55 +02001217
Sam Ravnborg184832c2009-03-15 11:05:12 +01001218 /*
1219 * We have different type of choice blocks.
Arnaud Lacombe579fb8e2010-12-05 01:41:16 -05001220 * If curr.tri equals to mod then we can select several
Sam Ravnborg184832c2009-03-15 11:05:12 +01001221 * choice symbols in one block.
1222 * In this case we do nothing.
Arnaud Lacombe579fb8e2010-12-05 01:41:16 -05001223 * If curr.tri equals yes then only one symbol can be
Sam Ravnborg184832c2009-03-15 11:05:12 +01001224 * selected in a choice block and we set it to yes,
1225 * and the rest to no.
1226 */
Arve Hjønnevågfbe98bb2013-06-06 20:37:00 -07001227 if (mode != def_random) {
1228 for_all_symbols(i, csym) {
1229 if ((sym_is_choice(csym) && !sym_has_value(csym)) ||
1230 sym_is_choice_value(csym))
1231 csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES;
1232 }
1233 }
1234
Roman Zippeldc7862e2008-05-06 04:55:55 +02001235 for_all_symbols(i, csym) {
1236 if (sym_has_value(csym) || !sym_is_choice(csym))
1237 continue;
1238
1239 sym_calc_value(csym);
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001240 if (mode == def_random)
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001241 has_changed = randomize_choice_values(csym);
1242 else {
1243 set_all_choice_values(csym);
1244 has_changed = true;
1245 }
Roman Zippeldc7862e2008-05-06 04:55:55 +02001246 }
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001247
1248 return has_changed;
Roman Zippeldc7862e2008-05-06 04:55:55 +02001249}