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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
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> | |
2e3646e5 | 8 | #include <fcntl.h> |
1da177e4 LT |
9 | #include <stdio.h> |
10 | #include <stdlib.h> | |
11 | #include <string.h> | |
12 | #include <time.h> | |
13 | #include <unistd.h> | |
14 | ||
15 | #define LKC_DIRECT_LINK | |
16 | #include "lkc.h" | |
17 | ||
c1a0f5e3 RZ |
18 | static void conf_warning(const char *fmt, ...) |
19 | __attribute__ ((format (printf, 1, 2))); | |
20 | ||
21 | static const char *conf_filename; | |
22 | static int conf_lineno, conf_warnings, conf_unsaved; | |
23 | ||
1da177e4 LT |
24 | const char conf_defname[] = "arch/$ARCH/defconfig"; |
25 | ||
c1a0f5e3 RZ |
26 | static void conf_warning(const char *fmt, ...) |
27 | { | |
28 | va_list ap; | |
29 | va_start(ap, fmt); | |
30 | fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno); | |
31 | vfprintf(stderr, fmt, ap); | |
32 | fprintf(stderr, "\n"); | |
33 | va_end(ap); | |
34 | conf_warnings++; | |
35 | } | |
36 | ||
14cdd3c4 RZ |
37 | const char *conf_get_configname(void) |
38 | { | |
39 | char *name = getenv("KCONFIG_CONFIG"); | |
40 | ||
41 | return name ? name : ".config"; | |
42 | } | |
43 | ||
12122f62 MH |
44 | const char *conf_get_autoconfig_name(void) |
45 | { | |
46 | char *name = getenv("KCONFIG_AUTOCONFIG"); | |
47 | ||
48 | return name ? name : "include/config/auto.conf"; | |
49 | } | |
50 | ||
48b9d03c | 51 | static char *conf_expand_value(const char *in) |
1da177e4 LT |
52 | { |
53 | struct symbol *sym; | |
48b9d03c | 54 | const char *src; |
1da177e4 LT |
55 | static char res_value[SYMBOL_MAXLENGTH]; |
56 | char *dst, name[SYMBOL_MAXLENGTH]; | |
57 | ||
58 | res_value[0] = 0; | |
59 | dst = name; | |
60 | while ((src = strchr(in, '$'))) { | |
61 | strncat(res_value, in, src - in); | |
62 | src++; | |
63 | dst = name; | |
64 | while (isalnum(*src) || *src == '_') | |
65 | *dst++ = *src++; | |
66 | *dst = 0; | |
67 | sym = sym_lookup(name, 0); | |
68 | sym_calc_value(sym); | |
69 | strcat(res_value, sym_get_string_value(sym)); | |
70 | in = src; | |
71 | } | |
72 | strcat(res_value, in); | |
73 | ||
74 | return res_value; | |
75 | } | |
76 | ||
77 | char *conf_get_default_confname(void) | |
78 | { | |
79 | struct stat buf; | |
80 | static char fullname[PATH_MAX+1]; | |
81 | char *env, *name; | |
82 | ||
83 | name = conf_expand_value(conf_defname); | |
84 | env = getenv(SRCTREE); | |
85 | if (env) { | |
86 | sprintf(fullname, "%s/%s", env, name); | |
87 | if (!stat(fullname, &buf)) | |
88 | return fullname; | |
89 | } | |
90 | return name; | |
91 | } | |
92 | ||
9c900a9c SR |
93 | static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p) |
94 | { | |
95 | char *p2; | |
96 | ||
97 | switch (sym->type) { | |
98 | case S_TRISTATE: | |
99 | if (p[0] == 'm') { | |
100 | sym->def[def].tri = mod; | |
101 | sym->flags |= def_flags; | |
102 | break; | |
103 | } | |
104 | case S_BOOLEAN: | |
105 | if (p[0] == 'y') { | |
106 | sym->def[def].tri = yes; | |
107 | sym->flags |= def_flags; | |
108 | break; | |
109 | } | |
110 | if (p[0] == 'n') { | |
111 | sym->def[def].tri = no; | |
112 | sym->flags |= def_flags; | |
113 | break; | |
114 | } | |
115 | conf_warning("symbol value '%s' invalid for %s", p, sym->name); | |
116 | break; | |
117 | case S_OTHER: | |
118 | if (*p != '"') { | |
119 | for (p2 = p; *p2 && !isspace(*p2); p2++) | |
120 | ; | |
121 | sym->type = S_STRING; | |
122 | goto done; | |
123 | } | |
124 | case S_STRING: | |
125 | if (*p++ != '"') | |
126 | break; | |
127 | for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) { | |
128 | if (*p2 == '"') { | |
129 | *p2 = 0; | |
130 | break; | |
131 | } | |
132 | memmove(p2, p2 + 1, strlen(p2)); | |
133 | } | |
134 | if (!p2) { | |
135 | conf_warning("invalid string found"); | |
136 | return 1; | |
137 | } | |
138 | case S_INT: | |
139 | case S_HEX: | |
140 | done: | |
141 | if (sym_string_valid(sym, p)) { | |
142 | sym->def[def].val = strdup(p); | |
143 | sym->flags |= def_flags; | |
144 | } else { | |
145 | conf_warning("symbol value '%s' invalid for %s", p, sym->name); | |
146 | return 1; | |
147 | } | |
148 | break; | |
149 | default: | |
150 | ; | |
151 | } | |
152 | return 0; | |
153 | } | |
154 | ||
669bfad9 | 155 | int conf_read_simple(const char *name, int def) |
1da177e4 LT |
156 | { |
157 | FILE *in = NULL; | |
158 | char line[1024]; | |
159 | char *p, *p2; | |
1da177e4 | 160 | struct symbol *sym; |
669bfad9 | 161 | int i, def_flags; |
1da177e4 LT |
162 | |
163 | if (name) { | |
164 | in = zconf_fopen(name); | |
165 | } else { | |
face4374 RZ |
166 | struct property *prop; |
167 | ||
14cdd3c4 | 168 | name = conf_get_configname(); |
ddc97cac RZ |
169 | in = zconf_fopen(name); |
170 | if (in) | |
171 | goto load; | |
bfc10001 | 172 | sym_add_change_count(1); |
ac1ffde1 UM |
173 | if (!sym_defconfig_list) { |
174 | if (modules_sym) | |
175 | sym_calc_value(modules_sym); | |
face4374 | 176 | return 1; |
ac1ffde1 | 177 | } |
face4374 RZ |
178 | |
179 | for_all_defaults(sym_defconfig_list, prop) { | |
180 | if (expr_calc_value(prop->visible.expr) == no || | |
181 | prop->expr->type != E_SYMBOL) | |
182 | continue; | |
183 | name = conf_expand_value(prop->expr->left.sym->name); | |
1da177e4 LT |
184 | in = zconf_fopen(name); |
185 | if (in) { | |
3b9fa093 | 186 | printf(_("#\n" |
ddc97cac RZ |
187 | "# using defaults found in %s\n" |
188 | "#\n"), name); | |
189 | goto load; | |
1da177e4 LT |
190 | } |
191 | } | |
192 | } | |
1da177e4 LT |
193 | if (!in) |
194 | return 1; | |
195 | ||
ddc97cac | 196 | load: |
c1a0f5e3 RZ |
197 | conf_filename = name; |
198 | conf_lineno = 0; | |
199 | conf_warnings = 0; | |
200 | conf_unsaved = 0; | |
201 | ||
669bfad9 | 202 | def_flags = SYMBOL_DEF << def; |
1da177e4 | 203 | for_all_symbols(i, sym) { |
669bfad9 RZ |
204 | sym->flags |= SYMBOL_CHANGED; |
205 | sym->flags &= ~(def_flags|SYMBOL_VALID); | |
c1a0f5e3 | 206 | if (sym_is_choice(sym)) |
669bfad9 | 207 | sym->flags |= def_flags; |
1da177e4 LT |
208 | switch (sym->type) { |
209 | case S_INT: | |
210 | case S_HEX: | |
211 | case S_STRING: | |
669bfad9 RZ |
212 | if (sym->def[def].val) |
213 | free(sym->def[def].val); | |
1da177e4 | 214 | default: |
669bfad9 RZ |
215 | sym->def[def].val = NULL; |
216 | sym->def[def].tri = no; | |
1da177e4 LT |
217 | } |
218 | } | |
219 | ||
220 | while (fgets(line, sizeof(line), in)) { | |
c1a0f5e3 | 221 | conf_lineno++; |
1da177e4 LT |
222 | sym = NULL; |
223 | switch (line[0]) { | |
224 | case '#': | |
225 | if (memcmp(line + 2, "CONFIG_", 7)) | |
226 | continue; | |
227 | p = strchr(line + 9, ' '); | |
228 | if (!p) | |
229 | continue; | |
230 | *p++ = 0; | |
231 | if (strncmp(p, "is not set", 10)) | |
232 | continue; | |
669bfad9 RZ |
233 | if (def == S_DEF_USER) { |
234 | sym = sym_find(line + 9); | |
661b0680 | 235 | if (!sym) { |
236 | sym_add_change_count(1); | |
669bfad9 | 237 | break; |
661b0680 | 238 | } |
669bfad9 RZ |
239 | } else { |
240 | sym = sym_lookup(line + 9, 0); | |
241 | if (sym->type == S_UNKNOWN) | |
242 | sym->type = S_BOOLEAN; | |
243 | } | |
244 | if (sym->flags & def_flags) { | |
d84876f9 | 245 | conf_warning("override: reassigning to symbol %s", sym->name); |
1da177e4 LT |
246 | } |
247 | switch (sym->type) { | |
248 | case S_BOOLEAN: | |
249 | case S_TRISTATE: | |
669bfad9 RZ |
250 | sym->def[def].tri = no; |
251 | sym->flags |= def_flags; | |
1da177e4 LT |
252 | break; |
253 | default: | |
254 | ; | |
255 | } | |
256 | break; | |
257 | case 'C': | |
c1a0f5e3 RZ |
258 | if (memcmp(line, "CONFIG_", 7)) { |
259 | conf_warning("unexpected data"); | |
1da177e4 | 260 | continue; |
c1a0f5e3 | 261 | } |
1da177e4 LT |
262 | p = strchr(line + 7, '='); |
263 | if (!p) | |
264 | continue; | |
265 | *p++ = 0; | |
266 | p2 = strchr(p, '\n'); | |
d3660a8c MW |
267 | if (p2) { |
268 | *p2-- = 0; | |
269 | if (*p2 == '\r') | |
270 | *p2 = 0; | |
271 | } | |
669bfad9 RZ |
272 | if (def == S_DEF_USER) { |
273 | sym = sym_find(line + 7); | |
661b0680 | 274 | if (!sym) { |
275 | sym_add_change_count(1); | |
669bfad9 | 276 | break; |
661b0680 | 277 | } |
669bfad9 RZ |
278 | } else { |
279 | sym = sym_lookup(line + 7, 0); | |
280 | if (sym->type == S_UNKNOWN) | |
281 | sym->type = S_OTHER; | |
282 | } | |
283 | if (sym->flags & def_flags) { | |
d84876f9 | 284 | conf_warning("override: reassigning to symbol %s", sym->name); |
1da177e4 | 285 | } |
9c900a9c SR |
286 | if (conf_set_sym_val(sym, def, def_flags, p)) |
287 | continue; | |
1da177e4 | 288 | break; |
d3660a8c | 289 | case '\r': |
1da177e4 LT |
290 | case '\n': |
291 | break; | |
292 | default: | |
c1a0f5e3 | 293 | conf_warning("unexpected data"); |
1da177e4 LT |
294 | continue; |
295 | } | |
296 | if (sym && sym_is_choice_value(sym)) { | |
297 | struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); | |
669bfad9 | 298 | switch (sym->def[def].tri) { |
1da177e4 LT |
299 | case no: |
300 | break; | |
301 | case mod: | |
669bfad9 | 302 | if (cs->def[def].tri == yes) { |
c1a0f5e3 | 303 | conf_warning("%s creates inconsistent choice state", sym->name); |
669bfad9 | 304 | cs->flags &= ~def_flags; |
c1a0f5e3 | 305 | } |
1da177e4 LT |
306 | break; |
307 | case yes: | |
d84876f9 JE |
308 | if (cs->def[def].tri != no) |
309 | conf_warning("override: %s changes choice state", sym->name); | |
310 | cs->def[def].val = sym; | |
1da177e4 LT |
311 | break; |
312 | } | |
d6ee3576 | 313 | cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri); |
1da177e4 LT |
314 | } |
315 | } | |
316 | fclose(in); | |
317 | ||
318 | if (modules_sym) | |
319 | sym_calc_value(modules_sym); | |
90389160 RZ |
320 | return 0; |
321 | } | |
322 | ||
323 | int conf_read(const char *name) | |
324 | { | |
7a962923 | 325 | struct symbol *sym, *choice_sym; |
90389160 RZ |
326 | struct property *prop; |
327 | struct expr *e; | |
669bfad9 | 328 | int i, flags; |
90389160 | 329 | |
bfc10001 | 330 | sym_set_change_count(0); |
ddc97cac | 331 | |
669bfad9 | 332 | if (conf_read_simple(name, S_DEF_USER)) |
90389160 RZ |
333 | return 1; |
334 | ||
1da177e4 LT |
335 | for_all_symbols(i, sym) { |
336 | sym_calc_value(sym); | |
c1a0f5e3 RZ |
337 | if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO)) |
338 | goto sym_ok; | |
339 | if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) { | |
340 | /* check that calculated value agrees with saved value */ | |
341 | switch (sym->type) { | |
342 | case S_BOOLEAN: | |
343 | case S_TRISTATE: | |
0c1822e6 | 344 | if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym)) |
c1a0f5e3 RZ |
345 | break; |
346 | if (!sym_is_choice(sym)) | |
347 | goto sym_ok; | |
348 | default: | |
0c1822e6 | 349 | if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val)) |
c1a0f5e3 RZ |
350 | goto sym_ok; |
351 | break; | |
352 | } | |
353 | } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE)) | |
354 | /* no previous value and not saved */ | |
355 | goto sym_ok; | |
356 | conf_unsaved++; | |
357 | /* maybe print value in verbose mode... */ | |
358 | sym_ok: | |
d8982ba1 RZ |
359 | if (!sym_is_choice(sym)) |
360 | continue; | |
361 | /* The choice symbol only has a set value (and thus is not new) | |
362 | * if all its visible childs have values. | |
363 | */ | |
364 | prop = sym_get_choice_prop(sym); | |
365 | flags = sym->flags; | |
7a962923 RZ |
366 | expr_list_for_each_sym(prop->expr, e, choice_sym) |
367 | if (choice_sym->visible != no) | |
368 | flags &= choice_sym->flags; | |
d8982ba1 RZ |
369 | sym->flags &= flags | ~SYMBOL_DEF_USER; |
370 | } | |
371 | ||
372 | for_all_symbols(i, sym) { | |
1da177e4 | 373 | if (sym_has_value(sym) && !sym_is_choice_value(sym)) { |
d8982ba1 RZ |
374 | /* Reset values of generates values, so they'll appear |
375 | * as new, if they should become visible, but that | |
376 | * doesn't quite work if the Kconfig and the saved | |
377 | * configuration disagree. | |
378 | */ | |
379 | if (sym->visible == no && !conf_unsaved) | |
669bfad9 | 380 | sym->flags &= ~SYMBOL_DEF_USER; |
1da177e4 LT |
381 | switch (sym->type) { |
382 | case S_STRING: | |
383 | case S_INT: | |
384 | case S_HEX: | |
d8982ba1 RZ |
385 | /* Reset a string value if it's out of range */ |
386 | if (sym_string_within_range(sym, sym->def[S_DEF_USER].val)) | |
387 | break; | |
388 | sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER); | |
389 | conf_unsaved++; | |
390 | break; | |
1da177e4 LT |
391 | default: |
392 | break; | |
393 | } | |
394 | } | |
1da177e4 LT |
395 | } |
396 | ||
bfc10001 | 397 | sym_add_change_count(conf_warnings || conf_unsaved); |
1da177e4 LT |
398 | |
399 | return 0; | |
400 | } | |
401 | ||
49192f26 SR |
402 | /* Write a S_STRING */ |
403 | static void conf_write_string(bool headerfile, const char *name, | |
404 | const char *str, FILE *out) | |
405 | { | |
406 | int l; | |
407 | if (headerfile) | |
408 | fprintf(out, "#define CONFIG_%s \"", name); | |
409 | else | |
410 | fprintf(out, "CONFIG_%s=\"", name); | |
411 | ||
412 | while (1) { | |
413 | l = strcspn(str, "\"\\"); | |
414 | if (l) { | |
bf5e327a | 415 | xfwrite(str, l, 1, out); |
49192f26 SR |
416 | str += l; |
417 | } | |
418 | if (!*str) | |
419 | break; | |
420 | fprintf(out, "\\%c", *str++); | |
421 | } | |
422 | fputs("\"\n", out); | |
423 | } | |
424 | ||
425 | static void conf_write_symbol(struct symbol *sym, enum symbol_type type, | |
426 | FILE *out, bool write_no) | |
427 | { | |
428 | const char *str; | |
429 | ||
430 | switch (type) { | |
431 | case S_BOOLEAN: | |
432 | case S_TRISTATE: | |
433 | switch (sym_get_tristate_value(sym)) { | |
434 | case no: | |
435 | if (write_no) | |
436 | fprintf(out, "# CONFIG_%s is not set\n", sym->name); | |
437 | break; | |
438 | case mod: | |
439 | fprintf(out, "CONFIG_%s=m\n", sym->name); | |
440 | break; | |
441 | case yes: | |
442 | fprintf(out, "CONFIG_%s=y\n", sym->name); | |
443 | break; | |
444 | } | |
445 | break; | |
446 | case S_STRING: | |
447 | conf_write_string(false, sym->name, sym_get_string_value(sym), out); | |
448 | break; | |
449 | case S_HEX: | |
450 | case S_INT: | |
451 | str = sym_get_string_value(sym); | |
452 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str); | |
453 | break; | |
454 | case S_OTHER: | |
455 | case S_UNKNOWN: | |
456 | break; | |
457 | } | |
458 | } | |
459 | ||
7cf3d73b SR |
460 | /* |
461 | * Write out a minimal config. | |
462 | * All values that has default values are skipped as this is redundant. | |
463 | */ | |
464 | int conf_write_defconfig(const char *filename) | |
465 | { | |
466 | struct symbol *sym; | |
467 | struct menu *menu; | |
468 | FILE *out; | |
469 | ||
470 | out = fopen(filename, "w"); | |
471 | if (!out) | |
472 | return 1; | |
473 | ||
474 | sym_clear_all_valid(); | |
475 | ||
476 | /* Traverse all menus to find all relevant symbols */ | |
477 | menu = rootmenu.list; | |
478 | ||
479 | while (menu != NULL) | |
480 | { | |
481 | sym = menu->sym; | |
482 | if (sym == NULL) { | |
483 | if (!menu_is_visible(menu)) | |
484 | goto next_menu; | |
485 | } else if (!sym_is_choice(sym)) { | |
486 | sym_calc_value(sym); | |
487 | if (!(sym->flags & SYMBOL_WRITE)) | |
488 | goto next_menu; | |
489 | sym->flags &= ~SYMBOL_WRITE; | |
490 | /* If we cannot change the symbol - skip */ | |
491 | if (!sym_is_changable(sym)) | |
492 | goto next_menu; | |
493 | /* If symbol equals to default value - skip */ | |
494 | if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0) | |
495 | goto next_menu; | |
496 | ||
497 | /* | |
498 | * If symbol is a choice value and equals to the | |
499 | * default for a choice - skip. | |
84062dd3 SR |
500 | * But only if value is bool and equal to "y" and |
501 | * choice is not "optional". | |
502 | * (If choice is "optional" then all values can be "n") | |
7cf3d73b SR |
503 | */ |
504 | if (sym_is_choice_value(sym)) { | |
505 | struct symbol *cs; | |
506 | struct symbol *ds; | |
507 | ||
508 | cs = prop_get_symbol(sym_get_choice_prop(sym)); | |
509 | ds = sym_choice_default(cs); | |
84062dd3 | 510 | if (!sym_is_optional(cs) && sym == ds) { |
801690ca SR |
511 | if ((sym->type == S_BOOLEAN) && |
512 | sym_get_tristate_value(sym) == yes) | |
7cf3d73b SR |
513 | goto next_menu; |
514 | } | |
515 | } | |
516 | conf_write_symbol(sym, sym->type, out, true); | |
517 | } | |
518 | next_menu: | |
519 | if (menu->list != NULL) { | |
520 | menu = menu->list; | |
521 | } | |
522 | else if (menu->next != NULL) { | |
523 | menu = menu->next; | |
524 | } else { | |
525 | while ((menu = menu->parent)) { | |
526 | if (menu->next != NULL) { | |
527 | menu = menu->next; | |
528 | break; | |
529 | } | |
530 | } | |
531 | } | |
532 | } | |
533 | fclose(out); | |
534 | return 0; | |
535 | } | |
536 | ||
1da177e4 LT |
537 | int conf_write(const char *name) |
538 | { | |
c955ccaf | 539 | FILE *out; |
1da177e4 LT |
540 | struct symbol *sym; |
541 | struct menu *menu; | |
542 | const char *basename; | |
1da177e4 | 543 | const char *str; |
49192f26 SR |
544 | char dirname[128], tmpname[128], newname[128]; |
545 | enum symbol_type type; | |
1da177e4 LT |
546 | time_t now; |
547 | int use_timestamp = 1; | |
548 | char *env; | |
549 | ||
550 | dirname[0] = 0; | |
551 | if (name && name[0]) { | |
552 | struct stat st; | |
553 | char *slash; | |
554 | ||
555 | if (!stat(name, &st) && S_ISDIR(st.st_mode)) { | |
556 | strcpy(dirname, name); | |
557 | strcat(dirname, "/"); | |
14cdd3c4 | 558 | basename = conf_get_configname(); |
1da177e4 LT |
559 | } else if ((slash = strrchr(name, '/'))) { |
560 | int size = slash - name + 1; | |
561 | memcpy(dirname, name, size); | |
562 | dirname[size] = 0; | |
563 | if (slash[1]) | |
564 | basename = slash + 1; | |
565 | else | |
14cdd3c4 | 566 | basename = conf_get_configname(); |
1da177e4 LT |
567 | } else |
568 | basename = name; | |
569 | } else | |
14cdd3c4 | 570 | basename = conf_get_configname(); |
1da177e4 | 571 | |
14cdd3c4 RZ |
572 | sprintf(newname, "%s%s", dirname, basename); |
573 | env = getenv("KCONFIG_OVERWRITECONFIG"); | |
574 | if (!env || !*env) { | |
575 | sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid()); | |
576 | out = fopen(tmpname, "w"); | |
577 | } else { | |
578 | *tmpname = 0; | |
579 | out = fopen(newname, "w"); | |
580 | } | |
1da177e4 LT |
581 | if (!out) |
582 | return 1; | |
14cdd3c4 | 583 | |
2244cbd8 | 584 | sym = sym_lookup("KERNELVERSION", 0); |
1da177e4 LT |
585 | sym_calc_value(sym); |
586 | time(&now); | |
587 | env = getenv("KCONFIG_NOTIMESTAMP"); | |
588 | if (env && *env) | |
589 | use_timestamp = 0; | |
590 | ||
3b9fa093 ACM |
591 | fprintf(out, _("#\n" |
592 | "# Automatically generated make config: don't edit\n" | |
593 | "# Linux kernel version: %s\n" | |
594 | "%s%s" | |
595 | "#\n"), | |
1da177e4 LT |
596 | sym_get_string_value(sym), |
597 | use_timestamp ? "# " : "", | |
598 | use_timestamp ? ctime(&now) : ""); | |
1da177e4 | 599 | |
b3214293 | 600 | if (!conf_get_changed()) |
1da177e4 LT |
601 | sym_clear_all_valid(); |
602 | ||
603 | menu = rootmenu.list; | |
604 | while (menu) { | |
605 | sym = menu->sym; | |
606 | if (!sym) { | |
607 | if (!menu_is_visible(menu)) | |
608 | goto next; | |
609 | str = menu_get_prompt(menu); | |
610 | fprintf(out, "\n" | |
611 | "#\n" | |
612 | "# %s\n" | |
613 | "#\n", str); | |
1da177e4 LT |
614 | } else if (!(sym->flags & SYMBOL_CHOICE)) { |
615 | sym_calc_value(sym); | |
616 | if (!(sym->flags & SYMBOL_WRITE)) | |
617 | goto next; | |
618 | sym->flags &= ~SYMBOL_WRITE; | |
619 | type = sym->type; | |
620 | if (type == S_TRISTATE) { | |
621 | sym_calc_value(modules_sym); | |
622 | if (modules_sym->curr.tri == no) | |
623 | type = S_BOOLEAN; | |
624 | } | |
49192f26 SR |
625 | /* Write config symbol to file */ |
626 | conf_write_symbol(sym, type, out, true); | |
1da177e4 LT |
627 | } |
628 | ||
49192f26 | 629 | next: |
1da177e4 LT |
630 | if (menu->list) { |
631 | menu = menu->list; | |
632 | continue; | |
633 | } | |
634 | if (menu->next) | |
635 | menu = menu->next; | |
636 | else while ((menu = menu->parent)) { | |
637 | if (menu->next) { | |
638 | menu = menu->next; | |
639 | break; | |
640 | } | |
641 | } | |
642 | } | |
643 | fclose(out); | |
14cdd3c4 RZ |
644 | |
645 | if (*tmpname) { | |
9a3d0fe8 | 646 | strcat(dirname, basename); |
14cdd3c4 RZ |
647 | strcat(dirname, ".old"); |
648 | rename(newname, dirname); | |
649 | if (rename(tmpname, newname)) | |
650 | return 1; | |
1da177e4 | 651 | } |
1da177e4 | 652 | |
ddc97cac RZ |
653 | printf(_("#\n" |
654 | "# configuration written to %s\n" | |
14cdd3c4 | 655 | "#\n"), newname); |
ddc97cac | 656 | |
bfc10001 | 657 | sym_set_change_count(0); |
1da177e4 LT |
658 | |
659 | return 0; | |
660 | } | |
c955ccaf | 661 | |
4356f489 | 662 | static int conf_split_config(void) |
2e3646e5 | 663 | { |
12122f62 MH |
664 | const char *name; |
665 | char path[128]; | |
2e3646e5 RZ |
666 | char *s, *d, c; |
667 | struct symbol *sym; | |
668 | struct stat sb; | |
669 | int res, i, fd; | |
670 | ||
12122f62 | 671 | name = conf_get_autoconfig_name(); |
2e3646e5 RZ |
672 | conf_read_simple(name, S_DEF_AUTO); |
673 | ||
674 | if (chdir("include/config")) | |
675 | return 1; | |
676 | ||
677 | res = 0; | |
678 | for_all_symbols(i, sym) { | |
679 | sym_calc_value(sym); | |
680 | if ((sym->flags & SYMBOL_AUTO) || !sym->name) | |
681 | continue; | |
682 | if (sym->flags & SYMBOL_WRITE) { | |
683 | if (sym->flags & SYMBOL_DEF_AUTO) { | |
684 | /* | |
685 | * symbol has old and new value, | |
686 | * so compare them... | |
687 | */ | |
688 | switch (sym->type) { | |
689 | case S_BOOLEAN: | |
690 | case S_TRISTATE: | |
691 | if (sym_get_tristate_value(sym) == | |
692 | sym->def[S_DEF_AUTO].tri) | |
693 | continue; | |
694 | break; | |
695 | case S_STRING: | |
696 | case S_HEX: | |
697 | case S_INT: | |
698 | if (!strcmp(sym_get_string_value(sym), | |
699 | sym->def[S_DEF_AUTO].val)) | |
700 | continue; | |
701 | break; | |
702 | default: | |
703 | break; | |
704 | } | |
705 | } else { | |
706 | /* | |
707 | * If there is no old value, only 'no' (unset) | |
708 | * is allowed as new value. | |
709 | */ | |
710 | switch (sym->type) { | |
711 | case S_BOOLEAN: | |
712 | case S_TRISTATE: | |
713 | if (sym_get_tristate_value(sym) == no) | |
714 | continue; | |
715 | break; | |
716 | default: | |
717 | break; | |
718 | } | |
719 | } | |
720 | } else if (!(sym->flags & SYMBOL_DEF_AUTO)) | |
721 | /* There is neither an old nor a new value. */ | |
722 | continue; | |
723 | /* else | |
724 | * There is an old value, but no new value ('no' (unset) | |
725 | * isn't saved in auto.conf, so the old value is always | |
726 | * different from 'no'). | |
727 | */ | |
728 | ||
729 | /* Replace all '_' and append ".h" */ | |
730 | s = sym->name; | |
731 | d = path; | |
732 | while ((c = *s++)) { | |
733 | c = tolower(c); | |
734 | *d++ = (c == '_') ? '/' : c; | |
735 | } | |
736 | strcpy(d, ".h"); | |
737 | ||
738 | /* Assume directory path already exists. */ | |
739 | fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); | |
740 | if (fd == -1) { | |
741 | if (errno != ENOENT) { | |
742 | res = 1; | |
743 | break; | |
744 | } | |
745 | /* | |
746 | * Create directory components, | |
747 | * unless they exist already. | |
748 | */ | |
749 | d = path; | |
750 | while ((d = strchr(d, '/'))) { | |
751 | *d = 0; | |
752 | if (stat(path, &sb) && mkdir(path, 0755)) { | |
753 | res = 1; | |
754 | goto out; | |
755 | } | |
756 | *d++ = '/'; | |
757 | } | |
758 | /* Try it again. */ | |
759 | fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); | |
760 | if (fd == -1) { | |
761 | res = 1; | |
762 | break; | |
763 | } | |
764 | } | |
765 | close(fd); | |
766 | } | |
767 | out: | |
768 | if (chdir("../..")) | |
769 | return 1; | |
770 | ||
771 | return res; | |
772 | } | |
773 | ||
c955ccaf RZ |
774 | int conf_write_autoconf(void) |
775 | { | |
776 | struct symbol *sym; | |
777 | const char *str; | |
12122f62 | 778 | const char *name; |
bc081dd6 | 779 | FILE *out, *tristate, *out_h; |
c955ccaf | 780 | time_t now; |
49192f26 | 781 | int i; |
c955ccaf | 782 | |
2e3646e5 RZ |
783 | sym_clear_all_valid(); |
784 | ||
c955ccaf RZ |
785 | file_write_dep("include/config/auto.conf.cmd"); |
786 | ||
2e3646e5 RZ |
787 | if (conf_split_config()) |
788 | return 1; | |
789 | ||
c955ccaf RZ |
790 | out = fopen(".tmpconfig", "w"); |
791 | if (!out) | |
792 | return 1; | |
793 | ||
bc081dd6 MM |
794 | tristate = fopen(".tmpconfig_tristate", "w"); |
795 | if (!tristate) { | |
796 | fclose(out); | |
797 | return 1; | |
798 | } | |
799 | ||
c955ccaf RZ |
800 | out_h = fopen(".tmpconfig.h", "w"); |
801 | if (!out_h) { | |
802 | fclose(out); | |
bc081dd6 | 803 | fclose(tristate); |
c955ccaf RZ |
804 | return 1; |
805 | } | |
806 | ||
807 | sym = sym_lookup("KERNELVERSION", 0); | |
808 | sym_calc_value(sym); | |
809 | time(&now); | |
810 | fprintf(out, "#\n" | |
811 | "# Automatically generated make config: don't edit\n" | |
812 | "# Linux kernel version: %s\n" | |
813 | "# %s" | |
814 | "#\n", | |
815 | sym_get_string_value(sym), ctime(&now)); | |
bc081dd6 MM |
816 | fprintf(tristate, "#\n" |
817 | "# Automatically generated - do not edit\n" | |
818 | "\n"); | |
c955ccaf RZ |
819 | fprintf(out_h, "/*\n" |
820 | " * Automatically generated C config: don't edit\n" | |
821 | " * Linux kernel version: %s\n" | |
822 | " * %s" | |
823 | " */\n" | |
824 | "#define AUTOCONF_INCLUDED\n", | |
825 | sym_get_string_value(sym), ctime(&now)); | |
826 | ||
c955ccaf RZ |
827 | for_all_symbols(i, sym) { |
828 | sym_calc_value(sym); | |
829 | if (!(sym->flags & SYMBOL_WRITE) || !sym->name) | |
830 | continue; | |
49192f26 SR |
831 | |
832 | /* write symbol to config file */ | |
833 | conf_write_symbol(sym, sym->type, out, false); | |
834 | ||
835 | /* update autoconf and tristate files */ | |
c955ccaf RZ |
836 | switch (sym->type) { |
837 | case S_BOOLEAN: | |
838 | case S_TRISTATE: | |
839 | switch (sym_get_tristate_value(sym)) { | |
840 | case no: | |
841 | break; | |
842 | case mod: | |
bc081dd6 | 843 | fprintf(tristate, "CONFIG_%s=M\n", sym->name); |
c955ccaf RZ |
844 | fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name); |
845 | break; | |
846 | case yes: | |
bc081dd6 MM |
847 | if (sym->type == S_TRISTATE) |
848 | fprintf(tristate, "CONFIG_%s=Y\n", | |
849 | sym->name); | |
c955ccaf RZ |
850 | fprintf(out_h, "#define CONFIG_%s 1\n", sym->name); |
851 | break; | |
852 | } | |
853 | break; | |
854 | case S_STRING: | |
49192f26 | 855 | conf_write_string(true, sym->name, sym_get_string_value(sym), out_h); |
c955ccaf RZ |
856 | break; |
857 | case S_HEX: | |
858 | str = sym_get_string_value(sym); | |
859 | if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) { | |
c955ccaf RZ |
860 | fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str); |
861 | break; | |
862 | } | |
863 | case S_INT: | |
864 | str = sym_get_string_value(sym); | |
c955ccaf RZ |
865 | fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str); |
866 | break; | |
867 | default: | |
868 | break; | |
869 | } | |
870 | } | |
871 | fclose(out); | |
bc081dd6 | 872 | fclose(tristate); |
c955ccaf RZ |
873 | fclose(out_h); |
874 | ||
875 | name = getenv("KCONFIG_AUTOHEADER"); | |
876 | if (!name) | |
264a2683 | 877 | name = "include/generated/autoconf.h"; |
c955ccaf RZ |
878 | if (rename(".tmpconfig.h", name)) |
879 | return 1; | |
bc081dd6 MM |
880 | name = getenv("KCONFIG_TRISTATE"); |
881 | if (!name) | |
882 | name = "include/config/tristate.conf"; | |
883 | if (rename(".tmpconfig_tristate", name)) | |
884 | return 1; | |
12122f62 | 885 | name = conf_get_autoconfig_name(); |
c955ccaf RZ |
886 | /* |
887 | * This must be the last step, kbuild has a dependency on auto.conf | |
888 | * and this marks the successful completion of the previous steps. | |
889 | */ | |
890 | if (rename(".tmpconfig", name)) | |
891 | return 1; | |
892 | ||
893 | return 0; | |
894 | } | |
b3214293 | 895 | |
bfc10001 | 896 | static int sym_change_count; |
3b354c55 | 897 | static void (*conf_changed_callback)(void); |
bfc10001 KW |
898 | |
899 | void sym_set_change_count(int count) | |
900 | { | |
3b354c55 | 901 | int _sym_change_count = sym_change_count; |
bfc10001 | 902 | sym_change_count = count; |
3b354c55 KW |
903 | if (conf_changed_callback && |
904 | (bool)_sym_change_count != (bool)count) | |
905 | conf_changed_callback(); | |
bfc10001 KW |
906 | } |
907 | ||
908 | void sym_add_change_count(int count) | |
909 | { | |
3b354c55 | 910 | sym_set_change_count(count + sym_change_count); |
bfc10001 KW |
911 | } |
912 | ||
b3214293 KW |
913 | bool conf_get_changed(void) |
914 | { | |
915 | return sym_change_count; | |
916 | } | |
3b354c55 KW |
917 | |
918 | void conf_set_changed_callback(void (*fn)(void)) | |
919 | { | |
920 | conf_changed_callback = fn; | |
921 | } | |
dc7862e5 | 922 | |
a64b44ea SR |
923 | static void randomize_choice_values(struct symbol *csym) |
924 | { | |
925 | struct property *prop; | |
926 | struct symbol *sym; | |
927 | struct expr *e; | |
928 | int cnt, def; | |
dc7862e5 | 929 | |
a64b44ea SR |
930 | /* |
931 | * If choice is mod then we may have more items slected | |
932 | * and if no then no-one. | |
933 | * In both cases stop. | |
934 | */ | |
935 | if (csym->curr.tri != yes) | |
936 | return; | |
937 | ||
938 | prop = sym_get_choice_prop(csym); | |
939 | ||
940 | /* count entries in choice block */ | |
941 | cnt = 0; | |
942 | expr_list_for_each_sym(prop->expr, e, sym) | |
943 | cnt++; | |
944 | ||
945 | /* | |
946 | * find a random value and set it to yes, | |
947 | * set the rest to no so we have only one set | |
948 | */ | |
949 | def = (rand() % cnt); | |
950 | ||
951 | cnt = 0; | |
952 | expr_list_for_each_sym(prop->expr, e, sym) { | |
953 | if (def == cnt++) { | |
954 | sym->def[S_DEF_USER].tri = yes; | |
955 | csym->def[S_DEF_USER].val = sym; | |
956 | } | |
957 | else { | |
958 | sym->def[S_DEF_USER].tri = no; | |
959 | } | |
960 | } | |
961 | csym->flags |= SYMBOL_DEF_USER; | |
962 | /* clear VALID to get value calculated */ | |
963 | csym->flags &= ~(SYMBOL_VALID); | |
964 | } | |
965 | ||
966 | static void set_all_choice_values(struct symbol *csym) | |
dc7862e5 | 967 | { |
dc7862e5 | 968 | struct property *prop; |
a64b44ea | 969 | struct symbol *sym; |
dc7862e5 | 970 | struct expr *e; |
a64b44ea SR |
971 | |
972 | prop = sym_get_choice_prop(csym); | |
973 | ||
974 | /* | |
975 | * Set all non-assinged choice values to no | |
976 | */ | |
977 | expr_list_for_each_sym(prop->expr, e, sym) { | |
978 | if (!sym_has_value(sym)) | |
979 | sym->def[S_DEF_USER].tri = no; | |
980 | } | |
981 | csym->flags |= SYMBOL_DEF_USER; | |
982 | /* clear VALID to get value calculated */ | |
983 | csym->flags &= ~(SYMBOL_VALID); | |
984 | } | |
985 | ||
986 | void conf_set_all_new_symbols(enum conf_def_mode mode) | |
987 | { | |
988 | struct symbol *sym, *csym; | |
989 | int i, cnt; | |
dc7862e5 RZ |
990 | |
991 | for_all_symbols(i, sym) { | |
992 | if (sym_has_value(sym)) | |
993 | continue; | |
994 | switch (sym_get_type(sym)) { | |
995 | case S_BOOLEAN: | |
996 | case S_TRISTATE: | |
997 | switch (mode) { | |
998 | case def_yes: | |
999 | sym->def[S_DEF_USER].tri = yes; | |
1000 | break; | |
1001 | case def_mod: | |
1002 | sym->def[S_DEF_USER].tri = mod; | |
1003 | break; | |
1004 | case def_no: | |
1005 | sym->def[S_DEF_USER].tri = no; | |
1006 | break; | |
1007 | case def_random: | |
1244b41d PK |
1008 | cnt = sym_get_type(sym) == S_TRISTATE ? 3 : 2; |
1009 | sym->def[S_DEF_USER].tri = (tristate)(rand() % cnt); | |
dc7862e5 RZ |
1010 | break; |
1011 | default: | |
1012 | continue; | |
1013 | } | |
184832c9 | 1014 | if (!(sym_is_choice(sym) && mode == def_random)) |
dc7862e5 RZ |
1015 | sym->flags |= SYMBOL_DEF_USER; |
1016 | break; | |
1017 | default: | |
1018 | break; | |
1019 | } | |
1020 | ||
1021 | } | |
1022 | ||
ce97e13e | 1023 | sym_clear_all_valid(); |
dc7862e5 | 1024 | |
184832c9 SR |
1025 | /* |
1026 | * We have different type of choice blocks. | |
1027 | * If curr.tri equal to mod then we can select several | |
1028 | * choice symbols in one block. | |
1029 | * In this case we do nothing. | |
1030 | * If curr.tri equal yes then only one symbol can be | |
1031 | * selected in a choice block and we set it to yes, | |
1032 | * and the rest to no. | |
1033 | */ | |
dc7862e5 RZ |
1034 | for_all_symbols(i, csym) { |
1035 | if (sym_has_value(csym) || !sym_is_choice(csym)) | |
1036 | continue; | |
1037 | ||
1038 | sym_calc_value(csym); | |
a64b44ea SR |
1039 | if (mode == def_random) |
1040 | randomize_choice_values(csym); | |
1041 | else | |
1042 | set_all_choice_values(csym); | |
dc7862e5 RZ |
1043 | } |
1044 | } |