blob: 87f723804079ed3b6c1fbb0d1470f717582c4a28 [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/$ARCH/defconfig";
29
Roman Zippelc1a0f5e2005-11-08 21:34:54 -080030static void conf_warning(const char *fmt, ...)
31{
32 va_list ap;
33 va_start(ap, fmt);
34 fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
35 vfprintf(stderr, fmt, ap);
36 fprintf(stderr, "\n");
37 va_end(ap);
38 conf_warnings++;
39}
40
Michal Marek42368c32010-08-17 10:21:19 +020041static void conf_default_message_callback(const char *fmt, va_list ap)
42{
43 printf("#\n# ");
44 vprintf(fmt, ap);
45 printf("\n#\n");
46}
47
48static void (*conf_message_callback) (const char *fmt, va_list ap) =
49 conf_default_message_callback;
50void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap))
51{
52 conf_message_callback = fn;
53}
54
55static void conf_message(const char *fmt, ...)
56{
57 va_list ap;
58
59 va_start(ap, fmt);
60 if (conf_message_callback)
61 conf_message_callback(fmt, ap);
62}
63
Roman Zippel14cdd3c2006-06-08 22:12:51 -070064const char *conf_get_configname(void)
65{
66 char *name = getenv("KCONFIG_CONFIG");
67
68 return name ? name : ".config";
69}
70
Markus Heidelberg12122f62009-05-18 01:36:54 +020071const char *conf_get_autoconfig_name(void)
72{
73 char *name = getenv("KCONFIG_AUTOCONFIG");
74
75 return name ? name : "include/config/auto.conf";
76}
77
J.A. Magallon48b9d032005-06-25 14:59:22 -070078static char *conf_expand_value(const char *in)
Linus Torvalds1da177e2005-04-16 15:20:36 -070079{
80 struct symbol *sym;
J.A. Magallon48b9d032005-06-25 14:59:22 -070081 const char *src;
Linus Torvalds1da177e2005-04-16 15:20:36 -070082 static char res_value[SYMBOL_MAXLENGTH];
83 char *dst, name[SYMBOL_MAXLENGTH];
84
85 res_value[0] = 0;
86 dst = name;
87 while ((src = strchr(in, '$'))) {
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 }
Yann E. MORIN04b19b72013-08-06 18:45:07 +0200143 if (def != S_DEF_AUTO)
144 conf_warning("symbol value '%s' invalid for %s",
145 p, sym->name);
Arnaud Lacombe75f14682011-05-31 12:31:57 -0400146 return 1;
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100147 case S_OTHER:
148 if (*p != '"') {
149 for (p2 = p; *p2 && !isspace(*p2); p2++)
150 ;
151 sym->type = S_STRING;
152 goto done;
153 }
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400154 /* fall through */
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100155 case S_STRING:
156 if (*p++ != '"')
157 break;
158 for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) {
159 if (*p2 == '"') {
160 *p2 = 0;
161 break;
162 }
163 memmove(p2, p2 + 1, strlen(p2));
164 }
165 if (!p2) {
Yann E. MORIN04b19b72013-08-06 18:45:07 +0200166 if (def != S_DEF_AUTO)
167 conf_warning("invalid string found");
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100168 return 1;
169 }
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400170 /* fall through */
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100171 case S_INT:
172 case S_HEX:
173 done:
174 if (sym_string_valid(sym, p)) {
175 sym->def[def].val = strdup(p);
176 sym->flags |= def_flags;
177 } else {
Yann E. MORIN04b19b72013-08-06 18:45:07 +0200178 if (def != S_DEF_AUTO)
179 conf_warning("symbol value '%s' invalid for %s",
180 p, sym->name);
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100181 return 1;
182 }
183 break;
184 default:
185 ;
186 }
187 return 0;
188}
189
Cody Schafer1a7a8c62012-07-13 11:27:12 -0700190#define LINE_GROWTH 16
191static int add_byte(int c, char **lineptr, size_t slen, size_t *n)
192{
193 char *nline;
194 size_t new_size = slen + 1;
195 if (new_size > *n) {
196 new_size += LINE_GROWTH - 1;
197 new_size *= 2;
198 nline = realloc(*lineptr, new_size);
199 if (!nline)
200 return -1;
201
202 *lineptr = nline;
203 *n = new_size;
204 }
205
206 (*lineptr)[slen] = c;
207
208 return 0;
209}
210
211static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream)
212{
213 char *line = *lineptr;
214 size_t slen = 0;
215
216 for (;;) {
217 int c = getc(stream);
218
219 switch (c) {
220 case '\n':
221 if (add_byte(c, &line, slen, n) < 0)
222 goto e_out;
223 slen++;
224 /* fall through */
225 case EOF:
226 if (add_byte('\0', &line, slen, n) < 0)
227 goto e_out;
228 *lineptr = line;
229 if (slen == 0)
230 return -1;
231 return slen;
232 default:
233 if (add_byte(c, &line, slen, n) < 0)
234 goto e_out;
235 slen++;
236 }
237 }
238
239e_out:
240 line[slen-1] = '\0';
241 *lineptr = line;
242 return -1;
243}
244
Roman Zippel669bfad2006-06-08 22:12:42 -0700245int conf_read_simple(const char *name, int def)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700246{
247 FILE *in = NULL;
Cody Schafer1a7a8c62012-07-13 11:27:12 -0700248 char *line = NULL;
249 size_t line_asize = 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700250 char *p, *p2;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700251 struct symbol *sym;
Roman Zippel669bfad2006-06-08 22:12:42 -0700252 int i, def_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700253
254 if (name) {
255 in = zconf_fopen(name);
256 } else {
Roman Zippelface4372006-06-08 22:12:45 -0700257 struct property *prop;
258
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700259 name = conf_get_configname();
Roman Zippelddc97ca2006-06-08 22:12:38 -0700260 in = zconf_fopen(name);
261 if (in)
262 goto load;
Karsten Wiesebfc10002006-12-13 00:34:07 -0800263 sym_add_change_count(1);
Ulf Magnussonac1ffde2010-07-27 21:57:43 +0200264 if (!sym_defconfig_list) {
265 if (modules_sym)
266 sym_calc_value(modules_sym);
Roman Zippelface4372006-06-08 22:12:45 -0700267 return 1;
Ulf Magnussonac1ffde2010-07-27 21:57:43 +0200268 }
Roman Zippelface4372006-06-08 22:12:45 -0700269
270 for_all_defaults(sym_defconfig_list, prop) {
271 if (expr_calc_value(prop->visible.expr) == no ||
272 prop->expr->type != E_SYMBOL)
273 continue;
274 name = conf_expand_value(prop->expr->left.sym->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700275 in = zconf_fopen(name);
276 if (in) {
Michal Marek42368c32010-08-17 10:21:19 +0200277 conf_message(_("using defaults found in %s"),
278 name);
Roman Zippelddc97ca2006-06-08 22:12:38 -0700279 goto load;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700280 }
281 }
282 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700283 if (!in)
284 return 1;
285
Roman Zippelddc97ca2006-06-08 22:12:38 -0700286load:
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800287 conf_filename = name;
288 conf_lineno = 0;
289 conf_warnings = 0;
290 conf_unsaved = 0;
291
Roman Zippel669bfad2006-06-08 22:12:42 -0700292 def_flags = SYMBOL_DEF << def;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293 for_all_symbols(i, sym) {
Roman Zippel669bfad2006-06-08 22:12:42 -0700294 sym->flags |= SYMBOL_CHANGED;
295 sym->flags &= ~(def_flags|SYMBOL_VALID);
Yann E. MORIN490f1612013-06-25 23:37:44 +0200296 if (sym_is_choice(sym))
297 sym->flags |= def_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700298 switch (sym->type) {
299 case S_INT:
300 case S_HEX:
301 case S_STRING:
Roman Zippel669bfad2006-06-08 22:12:42 -0700302 if (sym->def[def].val)
303 free(sym->def[def].val);
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400304 /* fall through */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700305 default:
Roman Zippel669bfad2006-06-08 22:12:42 -0700306 sym->def[def].val = NULL;
307 sym->def[def].tri = no;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700308 }
309 }
310
Cody Schafer1a7a8c62012-07-13 11:27:12 -0700311 while (compat_getline(&line, &line_asize, in) != -1) {
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800312 conf_lineno++;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700313 sym = NULL;
Arnaud Lacombe8baefd32010-08-24 00:14:47 -0400314 if (line[0] == '#') {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400315 if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700316 continue;
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400317 p = strchr(line + 2 + strlen(CONFIG_), ' ');
Linus Torvalds1da177e2005-04-16 15:20:36 -0700318 if (!p)
319 continue;
320 *p++ = 0;
321 if (strncmp(p, "is not set", 10))
322 continue;
Roman Zippel669bfad2006-06-08 22:12:42 -0700323 if (def == S_DEF_USER) {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400324 sym = sym_find(line + 2 + strlen(CONFIG_));
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200325 if (!sym) {
326 sym_add_change_count(1);
Naohiro Aota8bea7542010-10-01 04:23:17 +0900327 goto setsym;
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200328 }
Roman Zippel669bfad2006-06-08 22:12:42 -0700329 } else {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400330 sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
Roman Zippel669bfad2006-06-08 22:12:42 -0700331 if (sym->type == S_UNKNOWN)
332 sym->type = S_BOOLEAN;
333 }
334 if (sym->flags & def_flags) {
Jan Engelhardtd84876f2008-01-03 23:33:44 +0100335 conf_warning("override: reassigning to symbol %s", sym->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700336 }
337 switch (sym->type) {
338 case S_BOOLEAN:
339 case S_TRISTATE:
Roman Zippel669bfad2006-06-08 22:12:42 -0700340 sym->def[def].tri = no;
341 sym->flags |= def_flags;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700342 break;
343 default:
344 ;
345 }
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400346 } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
347 p = strchr(line + strlen(CONFIG_), '=');
Linus Torvalds1da177e2005-04-16 15:20:36 -0700348 if (!p)
349 continue;
350 *p++ = 0;
351 p2 = strchr(p, '\n');
Matthew Wilcoxd3660a82006-07-13 12:54:07 -0600352 if (p2) {
353 *p2-- = 0;
354 if (*p2 == '\r')
355 *p2 = 0;
356 }
Roman Zippel669bfad2006-06-08 22:12:42 -0700357 if (def == S_DEF_USER) {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400358 sym = sym_find(line + strlen(CONFIG_));
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200359 if (!sym) {
360 sym_add_change_count(1);
Naohiro Aota8bea7542010-10-01 04:23:17 +0900361 goto setsym;
zippel@linux-m68k.org661b0682008-09-29 05:27:11 +0200362 }
Roman Zippel669bfad2006-06-08 22:12:42 -0700363 } else {
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400364 sym = sym_lookup(line + strlen(CONFIG_), 0);
Roman Zippel669bfad2006-06-08 22:12:42 -0700365 if (sym->type == S_UNKNOWN)
366 sym->type = S_OTHER;
367 }
368 if (sym->flags & def_flags) {
Jan Engelhardtd84876f2008-01-03 23:33:44 +0100369 conf_warning("override: reassigning to symbol %s", sym->name);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700370 }
Sam Ravnborg9c900a92007-11-10 20:01:56 +0100371 if (conf_set_sym_val(sym, def, def_flags, p))
372 continue;
Arnaud Lacombe8baefd32010-08-24 00:14:47 -0400373 } else {
374 if (line[0] != '\r' && line[0] != '\n')
375 conf_warning("unexpected data");
Linus Torvalds1da177e2005-04-16 15:20:36 -0700376 continue;
377 }
Naohiro Aota8bea7542010-10-01 04:23:17 +0900378setsym:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700379 if (sym && sym_is_choice_value(sym)) {
380 struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
Roman Zippel669bfad2006-06-08 22:12:42 -0700381 switch (sym->def[def].tri) {
Linus Torvalds1da177e2005-04-16 15:20:36 -0700382 case no:
383 break;
384 case mod:
Roman Zippel669bfad2006-06-08 22:12:42 -0700385 if (cs->def[def].tri == yes) {
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800386 conf_warning("%s creates inconsistent choice state", sym->name);
Yann E. MORIN490f1612013-06-25 23:37:44 +0200387 cs->flags &= ~def_flags;
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800388 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700389 break;
390 case yes:
Jan Engelhardtd84876f2008-01-03 23:33:44 +0100391 if (cs->def[def].tri != no)
392 conf_warning("override: %s changes choice state", sym->name);
393 cs->def[def].val = sym;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700394 break;
395 }
Sam Ravnborgd6ee3572008-01-07 21:09:55 +0100396 cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700397 }
398 }
Cody Schafer1a7a8c62012-07-13 11:27:12 -0700399 free(line);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400 fclose(in);
401
402 if (modules_sym)
403 sym_calc_value(modules_sym);
Roman Zippel90389162005-11-08 21:34:49 -0800404 return 0;
405}
406
407int conf_read(const char *name)
408{
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500409 struct symbol *sym;
410 int i;
Roman Zippel90389162005-11-08 21:34:49 -0800411
Karsten Wiesebfc10002006-12-13 00:34:07 -0800412 sym_set_change_count(0);
Roman Zippelddc97ca2006-06-08 22:12:38 -0700413
Roman Zippel669bfad2006-06-08 22:12:42 -0700414 if (conf_read_simple(name, S_DEF_USER))
Roman Zippel90389162005-11-08 21:34:49 -0800415 return 1;
416
Linus Torvalds1da177e2005-04-16 15:20:36 -0700417 for_all_symbols(i, sym) {
418 sym_calc_value(sym);
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800419 if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500420 continue;
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800421 if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
422 /* check that calculated value agrees with saved value */
423 switch (sym->type) {
424 case S_BOOLEAN:
425 case S_TRISTATE:
Roman Zippel0c1822e2006-06-08 22:12:41 -0700426 if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800427 break;
428 if (!sym_is_choice(sym))
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500429 continue;
Arnaud Lacombed8fc3202011-05-31 12:30:26 -0400430 /* fall through */
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800431 default:
Roman Zippel0c1822e2006-06-08 22:12:41 -0700432 if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500433 continue;
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800434 break;
435 }
436 } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
437 /* no previous value and not saved */
Arnaud Lacombe5d095982012-01-23 17:29:05 -0500438 continue;
Roman Zippelc1a0f5e2005-11-08 21:34:54 -0800439 conf_unsaved++;
440 /* maybe print value in verbose mode... */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700441 }
442
Roman Zippeld8982ba2007-07-09 11:43:58 -0700443 for_all_symbols(i, sym) {
444 if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
445 /* Reset values of generates values, so they'll appear
446 * as new, if they should become visible, but that
447 * doesn't quite work if the Kconfig and the saved
448 * configuration disagree.
449 */
450 if (sym->visible == no && !conf_unsaved)
451 sym->flags &= ~SYMBOL_DEF_USER;
452 switch (sym->type) {
453 case S_STRING:
454 case S_INT:
455 case S_HEX:
456 /* Reset a string value if it's out of range */
457 if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
458 break;
459 sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
460 conf_unsaved++;
461 break;
462 default:
463 break;
464 }
465 }
466 }
467
Karsten Wiesebfc10002006-12-13 00:34:07 -0800468 sym_add_change_count(conf_warnings || conf_unsaved);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700469
470 return 0;
471}
472
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400473/*
474 * Kconfig configuration printer
475 *
476 * This printer is used when generating the resulting configuration after
477 * kconfig invocation and `defconfig' files. Unset symbol might be omitted by
478 * passing a non-NULL argument to the printer.
479 *
480 */
481static void
482kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
Sam Ravnborg49192f22010-07-31 23:35:33 +0200483{
Sam Ravnborg49192f22010-07-31 23:35:33 +0200484
Arnaud Lacombe0dce6312010-12-05 01:33:16 -0500485 switch (sym->type) {
Sam Ravnborg49192f22010-07-31 23:35:33 +0200486 case S_BOOLEAN:
487 case S_TRISTATE:
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400488 if (*value == 'n') {
489 bool skip_unset = (arg != NULL);
490
491 if (!skip_unset)
492 fprintf(fp, "# %s%s is not set\n",
Arnaud Lacombeffb59572010-08-14 23:57:43 -0400493 CONFIG_, sym->name);
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400494 return;
Sam Ravnborg49192f22010-07-31 23:35:33 +0200495 }
496 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400497 default:
Sam Ravnborg49192f22010-07-31 23:35:33 +0200498 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400499 }
500
501 fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
502}
503
504static void
505kconfig_print_comment(FILE *fp, const char *value, void *arg)
506{
507 const char *p = value;
508 size_t l;
509
510 for (;;) {
511 l = strcspn(p, "\n");
512 fprintf(fp, "#");
513 if (l) {
514 fprintf(fp, " ");
Peter Foley70cc01e2011-10-22 10:48:49 -0400515 xfwrite(p, l, 1, fp);
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400516 p += l;
517 }
518 fprintf(fp, "\n");
519 if (*p++ == '\0')
520 break;
521 }
522}
523
524static struct conf_printer kconfig_printer_cb =
525{
526 .print_symbol = kconfig_print_symbol,
527 .print_comment = kconfig_print_comment,
528};
529
530/*
531 * Header printer
532 *
533 * This printer is used when generating the `include/generated/autoconf.h' file.
534 */
535static void
536header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
537{
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400538
539 switch (sym->type) {
540 case S_BOOLEAN:
Arnaud Lacombeeb4cf5a2011-07-14 15:31:07 -0400541 case S_TRISTATE: {
542 const char *suffix = "";
543
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400544 switch (*value) {
545 case 'n':
Michal Marek2a11c8e2011-07-20 17:38:57 +0200546 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400547 case 'm':
548 suffix = "_MODULE";
Arnaud Lacombeeb4cf5a2011-07-14 15:31:07 -0400549 /* fall through */
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400550 default:
Michal Marek2a11c8e2011-07-20 17:38:57 +0200551 fprintf(fp, "#define %s%s%s 1\n",
552 CONFIG_, sym->name, suffix);
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400553 }
Arnaud Lacombeeb4cf5a2011-07-14 15:31:07 -0400554 break;
555 }
556 case S_HEX: {
557 const char *prefix = "";
558
559 if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
560 prefix = "0x";
561 fprintf(fp, "#define %s%s %s%s\n",
562 CONFIG_, sym->name, prefix, value);
563 break;
564 }
565 case S_STRING:
566 case S_INT:
567 fprintf(fp, "#define %s%s %s\n",
568 CONFIG_, sym->name, value);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200569 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400570 default:
571 break;
572 }
573
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400574}
575
576static void
577header_print_comment(FILE *fp, const char *value, void *arg)
578{
579 const char *p = value;
580 size_t l;
581
582 fprintf(fp, "/*\n");
583 for (;;) {
584 l = strcspn(p, "\n");
585 fprintf(fp, " *");
586 if (l) {
587 fprintf(fp, " ");
Peter Foley70cc01e2011-10-22 10:48:49 -0400588 xfwrite(p, l, 1, fp);
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400589 p += l;
590 }
591 fprintf(fp, "\n");
592 if (*p++ == '\0')
593 break;
594 }
595 fprintf(fp, " */\n");
596}
597
598static struct conf_printer header_printer_cb =
599{
600 .print_symbol = header_print_symbol,
601 .print_comment = header_print_comment,
602};
603
604/*
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400605 * Tristate printer
606 *
607 * This printer is used when generating the `include/config/tristate.conf' file.
608 */
609static void
610tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
611{
612
613 if (sym->type == S_TRISTATE && *value != 'n')
614 fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
615}
616
617static struct conf_printer tristate_printer_cb =
618{
619 .print_symbol = tristate_print_symbol,
620 .print_comment = kconfig_print_comment,
621};
622
623static void conf_write_symbol(FILE *fp, struct symbol *sym,
624 struct conf_printer *printer, void *printer_arg)
625{
626 const char *str;
627
628 switch (sym->type) {
Sam Ravnborg49192f22010-07-31 23:35:33 +0200629 case S_OTHER:
630 case S_UNKNOWN:
631 break;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400632 case S_STRING:
633 str = sym_get_string_value(sym);
634 str = sym_escape_string_value(str);
635 printer->print_symbol(fp, sym, str, printer_arg);
636 free((void *)str);
637 break;
638 default:
639 str = sym_get_string_value(sym);
640 printer->print_symbol(fp, sym, str, printer_arg);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200641 }
642}
643
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400644static void
645conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
646{
647 char buf[256];
648
649 snprintf(buf, sizeof(buf),
650 "\n"
651 "Automatically generated file; DO NOT EDIT.\n"
652 "%s\n",
653 rootmenu.prompt->text);
654
655 printer->print_comment(fp, buf, printer_arg);
656}
657
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200658/*
659 * Write out a minimal config.
660 * All values that has default values are skipped as this is redundant.
661 */
662int conf_write_defconfig(const char *filename)
663{
664 struct symbol *sym;
665 struct menu *menu;
666 FILE *out;
667
668 out = fopen(filename, "w");
669 if (!out)
670 return 1;
671
672 sym_clear_all_valid();
673
674 /* Traverse all menus to find all relevant symbols */
675 menu = rootmenu.list;
676
677 while (menu != NULL)
678 {
679 sym = menu->sym;
680 if (sym == NULL) {
681 if (!menu_is_visible(menu))
682 goto next_menu;
683 } else if (!sym_is_choice(sym)) {
684 sym_calc_value(sym);
685 if (!(sym->flags & SYMBOL_WRITE))
686 goto next_menu;
687 sym->flags &= ~SYMBOL_WRITE;
688 /* If we cannot change the symbol - skip */
689 if (!sym_is_changable(sym))
690 goto next_menu;
691 /* If symbol equals to default value - skip */
692 if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
693 goto next_menu;
694
695 /*
696 * If symbol is a choice value and equals to the
697 * default for a choice - skip.
Sam Ravnborg84062dd2010-08-14 23:22:16 +0200698 * But only if value is bool and equal to "y" and
699 * choice is not "optional".
700 * (If choice is "optional" then all values can be "n")
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200701 */
702 if (sym_is_choice_value(sym)) {
703 struct symbol *cs;
704 struct symbol *ds;
705
706 cs = prop_get_symbol(sym_get_choice_prop(sym));
707 ds = sym_choice_default(cs);
Sam Ravnborg84062dd2010-08-14 23:22:16 +0200708 if (!sym_is_optional(cs) && sym == ds) {
Sam Ravnborg801690c2010-08-12 09:11:51 +0200709 if ((sym->type == S_BOOLEAN) &&
710 sym_get_tristate_value(sym) == yes)
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200711 goto next_menu;
712 }
713 }
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400714 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
Sam Ravnborg7cf3d732010-07-31 23:35:34 +0200715 }
716next_menu:
717 if (menu->list != NULL) {
718 menu = menu->list;
719 }
720 else if (menu->next != NULL) {
721 menu = menu->next;
722 } else {
723 while ((menu = menu->parent)) {
724 if (menu->next != NULL) {
725 menu = menu->next;
726 break;
727 }
728 }
729 }
730 }
731 fclose(out);
732 return 0;
733}
734
Linus Torvalds1da177e2005-04-16 15:20:36 -0700735int conf_write(const char *name)
736{
Roman Zippelc955cca2006-06-08 22:12:39 -0700737 FILE *out;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700738 struct symbol *sym;
739 struct menu *menu;
740 const char *basename;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700741 const char *str;
Will Newton1408b152010-09-22 15:59:13 +0100742 char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
Linus Torvalds1da177e2005-04-16 15:20:36 -0700743 char *env;
744
745 dirname[0] = 0;
746 if (name && name[0]) {
747 struct stat st;
748 char *slash;
749
750 if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
751 strcpy(dirname, name);
752 strcat(dirname, "/");
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700753 basename = conf_get_configname();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700754 } else if ((slash = strrchr(name, '/'))) {
755 int size = slash - name + 1;
756 memcpy(dirname, name, size);
757 dirname[size] = 0;
758 if (slash[1])
759 basename = slash + 1;
760 else
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700761 basename = conf_get_configname();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700762 } else
763 basename = name;
764 } else
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700765 basename = conf_get_configname();
Linus Torvalds1da177e2005-04-16 15:20:36 -0700766
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700767 sprintf(newname, "%s%s", dirname, basename);
768 env = getenv("KCONFIG_OVERWRITECONFIG");
769 if (!env || !*env) {
770 sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
771 out = fopen(tmpname, "w");
772 } else {
773 *tmpname = 0;
774 out = fopen(newname, "w");
775 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700776 if (!out)
777 return 1;
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700778
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400779 conf_write_heading(out, &kconfig_printer_cb, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700780
Karsten Wieseb3214292006-12-13 00:34:06 -0800781 if (!conf_get_changed())
Linus Torvalds1da177e2005-04-16 15:20:36 -0700782 sym_clear_all_valid();
783
784 menu = rootmenu.list;
785 while (menu) {
786 sym = menu->sym;
787 if (!sym) {
788 if (!menu_is_visible(menu))
789 goto next;
790 str = menu_get_prompt(menu);
791 fprintf(out, "\n"
792 "#\n"
793 "# %s\n"
794 "#\n", str);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795 } else if (!(sym->flags & SYMBOL_CHOICE)) {
796 sym_calc_value(sym);
797 if (!(sym->flags & SYMBOL_WRITE))
798 goto next;
799 sym->flags &= ~SYMBOL_WRITE;
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400800
801 conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700802 }
803
Sam Ravnborg49192f22010-07-31 23:35:33 +0200804next:
Linus Torvalds1da177e2005-04-16 15:20:36 -0700805 if (menu->list) {
806 menu = menu->list;
807 continue;
808 }
809 if (menu->next)
810 menu = menu->next;
811 else while ((menu = menu->parent)) {
812 if (menu->next) {
813 menu = menu->next;
814 break;
815 }
816 }
817 }
818 fclose(out);
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700819
820 if (*tmpname) {
Sam Ravnborg9a3d0fe2006-10-01 11:48:53 +0200821 strcat(dirname, basename);
Roman Zippel14cdd3c2006-06-08 22:12:51 -0700822 strcat(dirname, ".old");
823 rename(newname, dirname);
824 if (rename(tmpname, newname))
825 return 1;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700826 }
Linus Torvalds1da177e2005-04-16 15:20:36 -0700827
Michal Marek42368c32010-08-17 10:21:19 +0200828 conf_message(_("configuration written to %s"), newname);
Roman Zippelddc97ca2006-06-08 22:12:38 -0700829
Karsten Wiesebfc10002006-12-13 00:34:07 -0800830 sym_set_change_count(0);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700831
832 return 0;
833}
Roman Zippelc955cca2006-06-08 22:12:39 -0700834
Trevor Keith4356f482009-09-18 12:49:23 -0700835static int conf_split_config(void)
Roman Zippel2e3646e2006-06-08 22:12:42 -0700836{
Markus Heidelberg12122f62009-05-18 01:36:54 +0200837 const char *name;
Will Newton1408b152010-09-22 15:59:13 +0100838 char path[PATH_MAX+1];
Roman Zippel2e3646e2006-06-08 22:12:42 -0700839 char *s, *d, c;
840 struct symbol *sym;
841 struct stat sb;
842 int res, i, fd;
843
Markus Heidelberg12122f62009-05-18 01:36:54 +0200844 name = conf_get_autoconfig_name();
Roman Zippel2e3646e2006-06-08 22:12:42 -0700845 conf_read_simple(name, S_DEF_AUTO);
846
847 if (chdir("include/config"))
848 return 1;
849
850 res = 0;
851 for_all_symbols(i, sym) {
852 sym_calc_value(sym);
853 if ((sym->flags & SYMBOL_AUTO) || !sym->name)
854 continue;
855 if (sym->flags & SYMBOL_WRITE) {
856 if (sym->flags & SYMBOL_DEF_AUTO) {
857 /*
858 * symbol has old and new value,
859 * so compare them...
860 */
861 switch (sym->type) {
862 case S_BOOLEAN:
863 case S_TRISTATE:
864 if (sym_get_tristate_value(sym) ==
865 sym->def[S_DEF_AUTO].tri)
866 continue;
867 break;
868 case S_STRING:
869 case S_HEX:
870 case S_INT:
871 if (!strcmp(sym_get_string_value(sym),
872 sym->def[S_DEF_AUTO].val))
873 continue;
874 break;
875 default:
876 break;
877 }
878 } else {
879 /*
880 * If there is no old value, only 'no' (unset)
881 * is allowed as new value.
882 */
883 switch (sym->type) {
884 case S_BOOLEAN:
885 case S_TRISTATE:
886 if (sym_get_tristate_value(sym) == no)
887 continue;
888 break;
889 default:
890 break;
891 }
892 }
893 } else if (!(sym->flags & SYMBOL_DEF_AUTO))
894 /* There is neither an old nor a new value. */
895 continue;
896 /* else
897 * There is an old value, but no new value ('no' (unset)
898 * isn't saved in auto.conf, so the old value is always
899 * different from 'no').
900 */
901
902 /* Replace all '_' and append ".h" */
903 s = sym->name;
904 d = path;
905 while ((c = *s++)) {
906 c = tolower(c);
907 *d++ = (c == '_') ? '/' : c;
908 }
909 strcpy(d, ".h");
910
911 /* Assume directory path already exists. */
912 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
913 if (fd == -1) {
914 if (errno != ENOENT) {
915 res = 1;
916 break;
917 }
918 /*
919 * Create directory components,
920 * unless they exist already.
921 */
922 d = path;
923 while ((d = strchr(d, '/'))) {
924 *d = 0;
925 if (stat(path, &sb) && mkdir(path, 0755)) {
926 res = 1;
927 goto out;
928 }
929 *d++ = '/';
930 }
931 /* Try it again. */
932 fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
933 if (fd == -1) {
934 res = 1;
935 break;
936 }
937 }
938 close(fd);
939 }
940out:
941 if (chdir("../.."))
942 return 1;
943
944 return res;
945}
946
Roman Zippelc955cca2006-06-08 22:12:39 -0700947int conf_write_autoconf(void)
948{
949 struct symbol *sym;
Markus Heidelberg12122f62009-05-18 01:36:54 +0200950 const char *name;
Michal Marekbc081dd2009-12-07 16:38:33 +0100951 FILE *out, *tristate, *out_h;
Sam Ravnborg49192f22010-07-31 23:35:33 +0200952 int i;
Roman Zippelc955cca2006-06-08 22:12:39 -0700953
Roman Zippel2e3646e2006-06-08 22:12:42 -0700954 sym_clear_all_valid();
955
Roman Zippelc955cca2006-06-08 22:12:39 -0700956 file_write_dep("include/config/auto.conf.cmd");
957
Roman Zippel2e3646e2006-06-08 22:12:42 -0700958 if (conf_split_config())
959 return 1;
960
Roman Zippelc955cca2006-06-08 22:12:39 -0700961 out = fopen(".tmpconfig", "w");
962 if (!out)
963 return 1;
964
Michal Marekbc081dd2009-12-07 16:38:33 +0100965 tristate = fopen(".tmpconfig_tristate", "w");
966 if (!tristate) {
967 fclose(out);
968 return 1;
969 }
970
Roman Zippelc955cca2006-06-08 22:12:39 -0700971 out_h = fopen(".tmpconfig.h", "w");
972 if (!out_h) {
973 fclose(out);
Michal Marekbc081dd2009-12-07 16:38:33 +0100974 fclose(tristate);
Roman Zippelc955cca2006-06-08 22:12:39 -0700975 return 1;
976 }
977
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400978 conf_write_heading(out, &kconfig_printer_cb, NULL);
979
980 conf_write_heading(tristate, &tristate_printer_cb, NULL);
981
982 conf_write_heading(out_h, &header_printer_cb, NULL);
Roman Zippelc955cca2006-06-08 22:12:39 -0700983
Roman Zippelc955cca2006-06-08 22:12:39 -0700984 for_all_symbols(i, sym) {
Arnaud Lacombe953742c2011-08-16 01:20:20 -0400985 sym_calc_value(sym);
Paul Gortmakera9596132012-04-12 19:46:33 -0400986 if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
Arnaud Lacombe953742c2011-08-16 01:20:20 -0400987 continue;
988
Paul Gortmakera9596132012-04-12 19:46:33 -0400989 /* write symbol to auto.conf, tristate and header files */
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400990 conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
Sam Ravnborg49192f22010-07-31 23:35:33 +0200991
Arnaud Lacombee54e6922011-05-15 23:42:09 -0400992 conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);
993
994 conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
Roman Zippelc955cca2006-06-08 22:12:39 -0700995 }
996 fclose(out);
Michal Marekbc081dd2009-12-07 16:38:33 +0100997 fclose(tristate);
Roman Zippelc955cca2006-06-08 22:12:39 -0700998 fclose(out_h);
999
1000 name = getenv("KCONFIG_AUTOHEADER");
1001 if (!name)
Sam Ravnborg264a2682009-10-18 00:49:24 +02001002 name = "include/generated/autoconf.h";
Roman Zippelc955cca2006-06-08 22:12:39 -07001003 if (rename(".tmpconfig.h", name))
1004 return 1;
Michal Marekbc081dd2009-12-07 16:38:33 +01001005 name = getenv("KCONFIG_TRISTATE");
1006 if (!name)
1007 name = "include/config/tristate.conf";
1008 if (rename(".tmpconfig_tristate", name))
1009 return 1;
Markus Heidelberg12122f62009-05-18 01:36:54 +02001010 name = conf_get_autoconfig_name();
Roman Zippelc955cca2006-06-08 22:12:39 -07001011 /*
1012 * This must be the last step, kbuild has a dependency on auto.conf
1013 * and this marks the successful completion of the previous steps.
1014 */
1015 if (rename(".tmpconfig", name))
1016 return 1;
1017
1018 return 0;
1019}
Karsten Wieseb3214292006-12-13 00:34:06 -08001020
Karsten Wiesebfc10002006-12-13 00:34:07 -08001021static int sym_change_count;
Karsten Wiese3b354c52006-12-13 00:34:08 -08001022static void (*conf_changed_callback)(void);
Karsten Wiesebfc10002006-12-13 00:34:07 -08001023
1024void sym_set_change_count(int count)
1025{
Karsten Wiese3b354c52006-12-13 00:34:08 -08001026 int _sym_change_count = sym_change_count;
Karsten Wiesebfc10002006-12-13 00:34:07 -08001027 sym_change_count = count;
Karsten Wiese3b354c52006-12-13 00:34:08 -08001028 if (conf_changed_callback &&
1029 (bool)_sym_change_count != (bool)count)
1030 conf_changed_callback();
Karsten Wiesebfc10002006-12-13 00:34:07 -08001031}
1032
1033void sym_add_change_count(int count)
1034{
Karsten Wiese3b354c52006-12-13 00:34:08 -08001035 sym_set_change_count(count + sym_change_count);
Karsten Wiesebfc10002006-12-13 00:34:07 -08001036}
1037
Karsten Wieseb3214292006-12-13 00:34:06 -08001038bool conf_get_changed(void)
1039{
1040 return sym_change_count;
1041}
Karsten Wiese3b354c52006-12-13 00:34:08 -08001042
1043void conf_set_changed_callback(void (*fn)(void))
1044{
1045 conf_changed_callback = fn;
1046}
Roman Zippeldc7862e2008-05-06 04:55:55 +02001047
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001048static bool randomize_choice_values(struct symbol *csym)
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001049{
1050 struct property *prop;
1051 struct symbol *sym;
1052 struct expr *e;
1053 int cnt, def;
1054
1055 /*
Arnaud Lacombe579fb8e2010-12-05 01:41:16 -05001056 * If choice is mod then we may have more items selected
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001057 * and if no then no-one.
1058 * In both cases stop.
1059 */
1060 if (csym->curr.tri != yes)
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001061 return false;
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001062
1063 prop = sym_get_choice_prop(csym);
1064
1065 /* count entries in choice block */
1066 cnt = 0;
1067 expr_list_for_each_sym(prop->expr, e, sym)
1068 cnt++;
1069
1070 /*
1071 * find a random value and set it to yes,
1072 * set the rest to no so we have only one set
1073 */
1074 def = (rand() % cnt);
1075
1076 cnt = 0;
1077 expr_list_for_each_sym(prop->expr, e, sym) {
1078 if (def == cnt++) {
1079 sym->def[S_DEF_USER].tri = yes;
1080 csym->def[S_DEF_USER].val = sym;
1081 }
1082 else {
1083 sym->def[S_DEF_USER].tri = no;
1084 }
Yann E. MORINe6abf122013-04-28 17:33:15 +02001085 sym->flags |= SYMBOL_DEF_USER;
1086 /* clear VALID to get value calculated */
1087 sym->flags &= ~SYMBOL_VALID;
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001088 }
1089 csym->flags |= SYMBOL_DEF_USER;
1090 /* clear VALID to get value calculated */
1091 csym->flags &= ~(SYMBOL_VALID);
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001092
1093 return true;
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001094}
1095
Arve Hjønnevågfbe98bb2013-06-06 20:37:00 -07001096void set_all_choice_values(struct symbol *csym)
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001097{
1098 struct property *prop;
1099 struct symbol *sym;
1100 struct expr *e;
1101
1102 prop = sym_get_choice_prop(csym);
1103
1104 /*
1105 * Set all non-assinged choice values to no
1106 */
1107 expr_list_for_each_sym(prop->expr, e, sym) {
1108 if (!sym_has_value(sym))
1109 sym->def[S_DEF_USER].tri = no;
1110 }
1111 csym->flags |= SYMBOL_DEF_USER;
1112 /* clear VALID to get value calculated */
Arve Hjønnevågfbe98bb2013-06-06 20:37:00 -07001113 csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES);
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001114}
Roman Zippeldc7862e2008-05-06 04:55:55 +02001115
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001116bool conf_set_all_new_symbols(enum conf_def_mode mode)
Roman Zippeldc7862e2008-05-06 04:55:55 +02001117{
1118 struct symbol *sym, *csym;
Yann E. MORINe43956e2013-04-13 17:18:36 +02001119 int i, cnt, pby, pty, ptm; /* pby: probability of boolean = y
1120 * pty: probability of tristate = y
1121 * ptm: probability of tristate = m
1122 */
1123
1124 pby = 50; pty = ptm = 33; /* can't go as the default in switch-case
1125 * below, otherwise gcc whines about
1126 * -Wmaybe-uninitialized */
1127 if (mode == def_random) {
1128 int n, p[3];
1129 char *env = getenv("KCONFIG_PROBABILITY");
1130 n = 0;
1131 while( env && *env ) {
1132 char *endp;
1133 int tmp = strtol( env, &endp, 10 );
1134 if( tmp >= 0 && tmp <= 100 ) {
1135 p[n++] = tmp;
1136 } else {
1137 errno = ERANGE;
1138 perror( "KCONFIG_PROBABILITY" );
1139 exit( 1 );
1140 }
1141 env = (*endp == ':') ? endp+1 : endp;
1142 if( n >=3 ) {
1143 break;
1144 }
1145 }
1146 switch( n ) {
1147 case 1:
1148 pby = p[0]; ptm = pby/2; pty = pby-ptm;
1149 break;
1150 case 2:
1151 pty = p[0]; ptm = p[1]; pby = pty + ptm;
1152 break;
1153 case 3:
1154 pby = p[0]; pty = p[1]; ptm = p[2];
1155 break;
1156 }
1157
1158 if( pty+ptm > 100 ) {
1159 errno = ERANGE;
1160 perror( "KCONFIG_PROBABILITY" );
1161 exit( 1 );
1162 }
1163 }
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001164 bool has_changed = false;
Roman Zippeldc7862e2008-05-06 04:55:55 +02001165
1166 for_all_symbols(i, sym) {
Yann E. MORINcfa98f22013-04-24 22:00:04 +02001167 if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID))
Roman Zippeldc7862e2008-05-06 04:55:55 +02001168 continue;
1169 switch (sym_get_type(sym)) {
1170 case S_BOOLEAN:
1171 case S_TRISTATE:
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001172 has_changed = true;
Roman Zippeldc7862e2008-05-06 04:55:55 +02001173 switch (mode) {
1174 case def_yes:
1175 sym->def[S_DEF_USER].tri = yes;
1176 break;
1177 case def_mod:
1178 sym->def[S_DEF_USER].tri = mod;
1179 break;
1180 case def_no:
1181 sym->def[S_DEF_USER].tri = no;
1182 break;
1183 case def_random:
Yann E. MORINe43956e2013-04-13 17:18:36 +02001184 sym->def[S_DEF_USER].tri = no;
1185 cnt = rand() % 100;
1186 if (sym->type == S_TRISTATE) {
1187 if (cnt < pty)
1188 sym->def[S_DEF_USER].tri = yes;
1189 else if (cnt < (pty+ptm))
1190 sym->def[S_DEF_USER].tri = mod;
1191 } else if (cnt < pby)
1192 sym->def[S_DEF_USER].tri = yes;
Roman Zippeldc7862e2008-05-06 04:55:55 +02001193 break;
1194 default:
1195 continue;
1196 }
Sam Ravnborg184832c2009-03-15 11:05:12 +01001197 if (!(sym_is_choice(sym) && mode == def_random))
Roman Zippeldc7862e2008-05-06 04:55:55 +02001198 sym->flags |= SYMBOL_DEF_USER;
1199 break;
1200 default:
1201 break;
1202 }
1203
1204 }
1205
Al Viroce97e132008-10-26 05:12:34 +00001206 sym_clear_all_valid();
Roman Zippeldc7862e2008-05-06 04:55:55 +02001207
Sam Ravnborg184832c2009-03-15 11:05:12 +01001208 /*
1209 * We have different type of choice blocks.
Arnaud Lacombe579fb8e2010-12-05 01:41:16 -05001210 * If curr.tri equals to mod then we can select several
Sam Ravnborg184832c2009-03-15 11:05:12 +01001211 * choice symbols in one block.
1212 * In this case we do nothing.
Arnaud Lacombe579fb8e2010-12-05 01:41:16 -05001213 * If curr.tri equals yes then only one symbol can be
Sam Ravnborg184832c2009-03-15 11:05:12 +01001214 * selected in a choice block and we set it to yes,
1215 * and the rest to no.
1216 */
Arve Hjønnevågfbe98bb2013-06-06 20:37:00 -07001217 if (mode != def_random) {
1218 for_all_symbols(i, csym) {
1219 if ((sym_is_choice(csym) && !sym_has_value(csym)) ||
1220 sym_is_choice_value(csym))
1221 csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES;
1222 }
1223 }
1224
Roman Zippeldc7862e2008-05-06 04:55:55 +02001225 for_all_symbols(i, csym) {
1226 if (sym_has_value(csym) || !sym_is_choice(csym))
1227 continue;
1228
1229 sym_calc_value(csym);
Sam Ravnborga64b44e2010-08-12 09:11:52 +02001230 if (mode == def_random)
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001231 has_changed = randomize_choice_values(csym);
1232 else {
1233 set_all_choice_values(csym);
1234 has_changed = true;
1235 }
Roman Zippeldc7862e2008-05-06 04:55:55 +02001236 }
Yann E. MORIN3b9a19e2013-04-28 22:36:38 +02001237
1238 return has_changed;
Roman Zippeldc7862e2008-05-06 04:55:55 +02001239}