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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> | |
8 | #include <errno.h> | |
9 | #include <fcntl.h> | |
10 | #include <stdarg.h> | |
11 | #include <stdio.h> | |
12 | #include <stdlib.h> | |
13 | #include <string.h> | |
14 | #include <time.h> | |
15 | #include <unistd.h> | |
16 | ||
17 | #include "lkc.h" | |
18 | ||
19 | static void conf_warning(const char *fmt, ...) | |
20 | __attribute__ ((format (printf, 1, 2))); | |
21 | ||
22 | static void conf_message(const char *fmt, ...) | |
23 | __attribute__ ((format (printf, 1, 2))); | |
24 | ||
25 | static const char *conf_filename; | |
26 | static int conf_lineno, conf_warnings, conf_unsaved; | |
27 | ||
28 | const char conf_defname[] = "arch/$ARCH/defconfig"; | |
29 | ||
30 | static void conf_warning(const char *fmt, ...) | |
31 | { | |
32 | va_list ap; | |
33 | va_start(ap, fmt); | |
34 | fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno); | |
35 | vfprintf(stderr, fmt, ap); | |
36 | fprintf(stderr, "\n"); | |
37 | va_end(ap); | |
38 | conf_warnings++; | |
39 | } | |
40 | ||
41 | static void conf_default_message_callback(const char *fmt, va_list ap) | |
42 | { | |
43 | printf("#\n# "); | |
44 | vprintf(fmt, ap); | |
45 | printf("\n#\n"); | |
46 | } | |
47 | ||
48 | static void (*conf_message_callback) (const char *fmt, va_list ap) = | |
49 | conf_default_message_callback; | |
50 | void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap)) | |
51 | { | |
52 | conf_message_callback = fn; | |
53 | } | |
54 | ||
55 | static void conf_message(const char *fmt, ...) | |
56 | { | |
57 | va_list ap; | |
58 | ||
59 | va_start(ap, fmt); | |
60 | if (conf_message_callback) | |
61 | conf_message_callback(fmt, ap); | |
62 | } | |
63 | ||
64 | const char *conf_get_configname(void) | |
65 | { | |
66 | char *name = getenv("KCONFIG_CONFIG"); | |
67 | ||
68 | return name ? name : ".config"; | |
69 | } | |
70 | ||
71 | const char *conf_get_autoconfig_name(void) | |
72 | { | |
73 | char *name = getenv("KCONFIG_AUTOCONFIG"); | |
74 | ||
75 | return name ? name : "include/config/auto.conf"; | |
76 | } | |
77 | ||
78 | static char *conf_expand_value(const char *in) | |
79 | { | |
80 | struct symbol *sym; | |
81 | const char *src; | |
82 | static char res_value[SYMBOL_MAXLENGTH]; | |
83 | char *dst, name[SYMBOL_MAXLENGTH]; | |
84 | ||
85 | res_value[0] = 0; | |
86 | dst = name; | |
87 | while ((src = strchr(in, '$'))) { | |
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 | ||
104 | char *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 | ||
120 | static 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 | } | |
131 | /* fall through */ | |
132 | case S_BOOLEAN: | |
133 | if (p[0] == 'y') { | |
134 | sym->def[def].tri = yes; | |
135 | sym->flags |= def_flags; | |
136 | break; | |
137 | } | |
138 | if (p[0] == 'n') { | |
139 | sym->def[def].tri = no; | |
140 | sym->flags |= def_flags; | |
141 | break; | |
142 | } | |
143 | if (def != S_DEF_AUTO) | |
144 | conf_warning("symbol value '%s' invalid for %s", | |
145 | p, sym->name); | |
146 | return 1; | |
147 | case S_OTHER: | |
148 | if (*p != '"') { | |
149 | for (p2 = p; *p2 && !isspace(*p2); p2++) | |
150 | ; | |
151 | sym->type = S_STRING; | |
152 | goto done; | |
153 | } | |
154 | /* fall through */ | |
155 | case S_STRING: | |
156 | if (*p++ != '"') | |
157 | break; | |
158 | /* Last char has to be a '"' */ | |
159 | if (p[strlen(p) - 1] != '"') { | |
160 | if (def != S_DEF_AUTO) | |
161 | conf_warning("invalid string found"); | |
162 | return 1; | |
163 | } | |
164 | /* Overwrite '"' with \0 for string termination */ | |
165 | p[strlen(p) - 1] = 0; | |
166 | /* fall through */ | |
167 | case S_INT: | |
168 | case S_HEX: | |
169 | done: | |
170 | if (sym_string_valid(sym, p)) { | |
171 | sym->def[def].val = strdup(p); | |
172 | sym->flags |= def_flags; | |
173 | } else { | |
174 | if (def != S_DEF_AUTO) | |
175 | conf_warning("symbol value '%s' invalid for %s", | |
176 | p, sym->name); | |
177 | return 1; | |
178 | } | |
179 | break; | |
180 | default: | |
181 | ; | |
182 | } | |
183 | return 0; | |
184 | } | |
185 | ||
186 | #define LINE_GROWTH 16 | |
187 | static int add_byte(int c, char **lineptr, size_t slen, size_t *n) | |
188 | { | |
189 | char *nline; | |
190 | size_t new_size = slen + 1; | |
191 | if (new_size > *n) { | |
192 | new_size += LINE_GROWTH - 1; | |
193 | new_size *= 2; | |
194 | nline = realloc(*lineptr, new_size); | |
195 | if (!nline) | |
196 | return -1; | |
197 | ||
198 | *lineptr = nline; | |
199 | *n = new_size; | |
200 | } | |
201 | ||
202 | (*lineptr)[slen] = c; | |
203 | ||
204 | return 0; | |
205 | } | |
206 | ||
207 | static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream) | |
208 | { | |
209 | char *line = *lineptr; | |
210 | size_t slen = 0; | |
211 | ||
212 | for (;;) { | |
213 | int c = getc(stream); | |
214 | ||
215 | switch (c) { | |
216 | case '\n': | |
217 | if (add_byte(c, &line, slen, n) < 0) | |
218 | goto e_out; | |
219 | slen++; | |
220 | /* fall through */ | |
221 | case EOF: | |
222 | if (add_byte('\0', &line, slen, n) < 0) | |
223 | goto e_out; | |
224 | *lineptr = line; | |
225 | if (slen == 0) | |
226 | return -1; | |
227 | return slen; | |
228 | default: | |
229 | if (add_byte(c, &line, slen, n) < 0) | |
230 | goto e_out; | |
231 | slen++; | |
232 | } | |
233 | } | |
234 | ||
235 | e_out: | |
236 | line[slen-1] = '\0'; | |
237 | *lineptr = line; | |
238 | return -1; | |
239 | } | |
240 | ||
241 | int conf_read_simple(const char *name, int def) | |
242 | { | |
243 | FILE *in = NULL; | |
244 | char *line = NULL; | |
245 | size_t line_asize = 0; | |
246 | char *p, *p2; | |
247 | struct symbol *sym; | |
248 | int i, def_flags; | |
249 | ||
250 | if (name) { | |
251 | in = zconf_fopen(name); | |
252 | } else { | |
253 | struct property *prop; | |
254 | ||
255 | name = conf_get_configname(); | |
256 | in = zconf_fopen(name); | |
257 | if (in) | |
258 | goto load; | |
259 | sym_add_change_count(1); | |
260 | if (!sym_defconfig_list) { | |
261 | if (modules_sym) | |
262 | sym_calc_value(modules_sym); | |
263 | return 1; | |
264 | } | |
265 | ||
266 | for_all_defaults(sym_defconfig_list, prop) { | |
267 | if (expr_calc_value(prop->visible.expr) == no || | |
268 | prop->expr->type != E_SYMBOL) | |
269 | continue; | |
270 | name = conf_expand_value(prop->expr->left.sym->name); | |
271 | in = zconf_fopen(name); | |
272 | if (in) { | |
273 | conf_message(_("using defaults found in %s"), | |
274 | name); | |
275 | goto load; | |
276 | } | |
277 | } | |
278 | } | |
279 | if (!in) | |
280 | return 1; | |
281 | ||
282 | load: | |
283 | conf_filename = name; | |
284 | conf_lineno = 0; | |
285 | conf_warnings = 0; | |
286 | conf_unsaved = 0; | |
287 | ||
288 | def_flags = SYMBOL_DEF << def; | |
289 | for_all_symbols(i, sym) { | |
290 | sym->flags |= SYMBOL_CHANGED; | |
291 | sym->flags &= ~(def_flags|SYMBOL_VALID); | |
292 | if (sym_is_choice(sym)) | |
293 | sym->flags |= def_flags; | |
294 | switch (sym->type) { | |
295 | case S_INT: | |
296 | case S_HEX: | |
297 | case S_STRING: | |
298 | if (sym->def[def].val) | |
299 | free(sym->def[def].val); | |
300 | /* fall through */ | |
301 | default: | |
302 | sym->def[def].val = NULL; | |
303 | sym->def[def].tri = no; | |
304 | } | |
305 | } | |
306 | ||
307 | while (compat_getline(&line, &line_asize, in) != -1) { | |
308 | conf_lineno++; | |
309 | sym = NULL; | |
310 | if (line[0] == '#') { | |
311 | if (memcmp(line + 2, CONFIG_, strlen(CONFIG_))) | |
312 | continue; | |
313 | p = strchr(line + 2 + strlen(CONFIG_), ' '); | |
314 | if (!p) | |
315 | continue; | |
316 | *p++ = 0; | |
317 | if (strncmp(p, "is not set", 10)) | |
318 | continue; | |
319 | if (def == S_DEF_USER) { | |
320 | sym = sym_find(line + 2 + strlen(CONFIG_)); | |
321 | if (!sym) { | |
322 | sym_add_change_count(1); | |
323 | goto setsym; | |
324 | } | |
325 | } else { | |
326 | sym = sym_lookup(line + 2 + strlen(CONFIG_), 0); | |
327 | if (sym->type == S_UNKNOWN) | |
328 | sym->type = S_BOOLEAN; | |
329 | } | |
330 | if (sym->flags & def_flags) { | |
331 | conf_warning("override: reassigning to symbol %s", sym->name); | |
332 | } | |
333 | switch (sym->type) { | |
334 | case S_BOOLEAN: | |
335 | case S_TRISTATE: | |
336 | sym->def[def].tri = no; | |
337 | sym->flags |= def_flags; | |
338 | break; | |
339 | default: | |
340 | ; | |
341 | } | |
342 | } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) { | |
343 | p = strchr(line + strlen(CONFIG_), '='); | |
344 | if (!p) | |
345 | continue; | |
346 | *p++ = 0; | |
347 | p2 = strchr(p, '\n'); | |
348 | if (p2) { | |
349 | *p2-- = 0; | |
350 | if (*p2 == '\r') | |
351 | *p2 = 0; | |
352 | } | |
353 | if (def == S_DEF_USER) { | |
354 | sym = sym_find(line + strlen(CONFIG_)); | |
355 | if (!sym) { | |
356 | sym_add_change_count(1); | |
357 | goto setsym; | |
358 | } | |
359 | } else { | |
360 | sym = sym_lookup(line + strlen(CONFIG_), 0); | |
361 | if (sym->type == S_UNKNOWN) | |
362 | sym->type = S_OTHER; | |
363 | } | |
364 | if (sym->flags & def_flags) { | |
365 | conf_warning("override: reassigning to symbol %s", sym->name); | |
366 | } | |
367 | if (conf_set_sym_val(sym, def, def_flags, p)) | |
368 | continue; | |
369 | } else { | |
370 | if (line[0] != '\r' && line[0] != '\n') | |
371 | conf_warning("unexpected data"); | |
372 | continue; | |
373 | } | |
374 | setsym: | |
375 | if (sym && sym_is_choice_value(sym)) { | |
376 | struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); | |
377 | switch (sym->def[def].tri) { | |
378 | case no: | |
379 | break; | |
380 | case mod: | |
381 | if (cs->def[def].tri == yes) { | |
382 | conf_warning("%s creates inconsistent choice state", sym->name); | |
383 | cs->flags &= ~def_flags; | |
384 | } | |
385 | break; | |
386 | case yes: | |
387 | if (cs->def[def].tri != no) | |
388 | conf_warning("override: %s changes choice state", sym->name); | |
389 | cs->def[def].val = sym; | |
390 | break; | |
391 | } | |
392 | cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri); | |
393 | } | |
394 | } | |
395 | free(line); | |
396 | fclose(in); | |
397 | ||
398 | if (modules_sym) | |
399 | sym_calc_value(modules_sym); | |
400 | return 0; | |
401 | } | |
402 | ||
403 | int conf_read(const char *name) | |
404 | { | |
405 | struct symbol *sym; | |
406 | int i; | |
407 | ||
408 | sym_set_change_count(0); | |
409 | ||
410 | if (conf_read_simple(name, S_DEF_USER)) | |
411 | return 1; | |
412 | ||
413 | for_all_symbols(i, sym) { | |
414 | sym_calc_value(sym); | |
415 | if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO)) | |
416 | continue; | |
417 | if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) { | |
418 | /* check that calculated value agrees with saved value */ | |
419 | switch (sym->type) { | |
420 | case S_BOOLEAN: | |
421 | case S_TRISTATE: | |
422 | if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym)) | |
423 | break; | |
424 | if (!sym_is_choice(sym)) | |
425 | continue; | |
426 | /* fall through */ | |
427 | default: | |
428 | if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val)) | |
429 | continue; | |
430 | break; | |
431 | } | |
432 | } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE)) | |
433 | /* no previous value and not saved */ | |
434 | continue; | |
435 | conf_unsaved++; | |
436 | /* maybe print value in verbose mode... */ | |
437 | } | |
438 | ||
439 | for_all_symbols(i, sym) { | |
440 | if (sym_has_value(sym) && !sym_is_choice_value(sym)) { | |
441 | /* Reset values of generates values, so they'll appear | |
442 | * as new, if they should become visible, but that | |
443 | * doesn't quite work if the Kconfig and the saved | |
444 | * configuration disagree. | |
445 | */ | |
446 | if (sym->visible == no && !conf_unsaved) | |
447 | sym->flags &= ~SYMBOL_DEF_USER; | |
448 | switch (sym->type) { | |
449 | case S_STRING: | |
450 | case S_INT: | |
451 | case S_HEX: | |
452 | /* Reset a string value if it's out of range */ | |
453 | if (sym_string_within_range(sym, sym->def[S_DEF_USER].val)) | |
454 | break; | |
455 | sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER); | |
456 | conf_unsaved++; | |
457 | break; | |
458 | default: | |
459 | break; | |
460 | } | |
461 | } | |
462 | } | |
463 | ||
464 | sym_add_change_count(conf_warnings || conf_unsaved); | |
465 | ||
466 | return 0; | |
467 | } | |
468 | ||
469 | /* | |
470 | * Kconfig configuration printer | |
471 | * | |
472 | * This printer is used when generating the resulting configuration after | |
473 | * kconfig invocation and `defconfig' files. Unset symbol might be omitted by | |
474 | * passing a non-NULL argument to the printer. | |
475 | * | |
476 | */ | |
477 | static void | |
478 | kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) | |
479 | { | |
480 | ||
481 | switch (sym->type) { | |
482 | case S_BOOLEAN: | |
483 | case S_TRISTATE: | |
484 | if (*value == 'n') { | |
485 | bool skip_unset = (arg != NULL); | |
486 | ||
487 | if (!skip_unset) | |
488 | fprintf(fp, "# %s%s is not set\n", | |
489 | CONFIG_, sym->name); | |
490 | return; | |
491 | } | |
492 | break; | |
493 | default: | |
494 | break; | |
495 | } | |
496 | ||
497 | fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value); | |
498 | } | |
499 | ||
500 | static void | |
501 | kconfig_print_comment(FILE *fp, const char *value, void *arg) | |
502 | { | |
503 | const char *p = value; | |
504 | size_t l; | |
505 | ||
506 | for (;;) { | |
507 | l = strcspn(p, "\n"); | |
508 | fprintf(fp, "#"); | |
509 | if (l) { | |
510 | fprintf(fp, " "); | |
511 | xfwrite(p, l, 1, fp); | |
512 | p += l; | |
513 | } | |
514 | fprintf(fp, "\n"); | |
515 | if (*p++ == '\0') | |
516 | break; | |
517 | } | |
518 | } | |
519 | ||
520 | static struct conf_printer kconfig_printer_cb = | |
521 | { | |
522 | .print_symbol = kconfig_print_symbol, | |
523 | .print_comment = kconfig_print_comment, | |
524 | }; | |
525 | ||
526 | /* | |
527 | * Header printer | |
528 | * | |
529 | * This printer is used when generating the `include/generated/autoconf.h' file. | |
530 | */ | |
531 | static void | |
532 | header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) | |
533 | { | |
534 | ||
535 | switch (sym->type) { | |
536 | case S_BOOLEAN: | |
537 | case S_TRISTATE: { | |
538 | const char *suffix = ""; | |
539 | ||
540 | switch (*value) { | |
541 | case 'n': | |
542 | break; | |
543 | case 'm': | |
544 | suffix = "_MODULE"; | |
545 | /* fall through */ | |
546 | default: | |
547 | fprintf(fp, "#define %s%s%s 1\n", | |
548 | CONFIG_, sym->name, suffix); | |
549 | } | |
550 | break; | |
551 | } | |
552 | case S_HEX: { | |
553 | const char *prefix = ""; | |
554 | ||
555 | if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X')) | |
556 | prefix = "0x"; | |
557 | fprintf(fp, "#define %s%s %s%s\n", | |
558 | CONFIG_, sym->name, prefix, value); | |
559 | break; | |
560 | } | |
561 | case S_STRING: | |
562 | case S_INT: | |
563 | fprintf(fp, "#define %s%s %s\n", | |
564 | CONFIG_, sym->name, value); | |
565 | break; | |
566 | default: | |
567 | break; | |
568 | } | |
569 | ||
570 | } | |
571 | ||
572 | static void | |
573 | header_print_comment(FILE *fp, const char *value, void *arg) | |
574 | { | |
575 | const char *p = value; | |
576 | size_t l; | |
577 | ||
578 | fprintf(fp, "/*\n"); | |
579 | for (;;) { | |
580 | l = strcspn(p, "\n"); | |
581 | fprintf(fp, " *"); | |
582 | if (l) { | |
583 | fprintf(fp, " "); | |
584 | xfwrite(p, l, 1, fp); | |
585 | p += l; | |
586 | } | |
587 | fprintf(fp, "\n"); | |
588 | if (*p++ == '\0') | |
589 | break; | |
590 | } | |
591 | fprintf(fp, " */\n"); | |
592 | } | |
593 | ||
594 | static struct conf_printer header_printer_cb = | |
595 | { | |
596 | .print_symbol = header_print_symbol, | |
597 | .print_comment = header_print_comment, | |
598 | }; | |
599 | ||
600 | /* | |
601 | * Tristate printer | |
602 | * | |
603 | * This printer is used when generating the `include/config/tristate.conf' file. | |
604 | */ | |
605 | static void | |
606 | tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) | |
607 | { | |
608 | ||
609 | if (sym->type == S_TRISTATE && *value != 'n') | |
610 | fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value)); | |
611 | } | |
612 | ||
613 | static struct conf_printer tristate_printer_cb = | |
614 | { | |
615 | .print_symbol = tristate_print_symbol, | |
616 | .print_comment = kconfig_print_comment, | |
617 | }; | |
618 | ||
619 | static void conf_write_symbol(FILE *fp, struct symbol *sym, | |
620 | struct conf_printer *printer, void *printer_arg) | |
621 | { | |
622 | const char *str; | |
623 | char *str2; | |
624 | ||
625 | switch (sym->type) { | |
626 | case S_OTHER: | |
627 | case S_UNKNOWN: | |
628 | break; | |
629 | case S_STRING: | |
630 | str = sym_get_string_value(sym); | |
631 | str2 = xmalloc(strlen(str) + 3); | |
632 | sprintf(str2, "\"%s\"", str); | |
633 | printer->print_symbol(fp, sym, str2, printer_arg); | |
634 | free((void *)str2); | |
635 | break; | |
636 | default: | |
637 | str = sym_get_string_value(sym); | |
638 | printer->print_symbol(fp, sym, str, printer_arg); | |
639 | } | |
640 | } | |
641 | ||
642 | static void | |
643 | conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg) | |
644 | { | |
645 | char buf[256]; | |
646 | ||
647 | snprintf(buf, sizeof(buf), | |
648 | "\n" | |
649 | "Automatically generated file; DO NOT EDIT.\n" | |
650 | "%s\n", | |
651 | rootmenu.prompt->text); | |
652 | ||
653 | printer->print_comment(fp, buf, printer_arg); | |
654 | } | |
655 | ||
656 | /* | |
657 | * Write out a minimal config. | |
658 | * All values that has default values are skipped as this is redundant. | |
659 | */ | |
660 | int conf_write_defconfig(const char *filename) | |
661 | { | |
662 | struct symbol *sym; | |
663 | struct menu *menu; | |
664 | FILE *out; | |
665 | ||
666 | out = fopen(filename, "w"); | |
667 | if (!out) | |
668 | return 1; | |
669 | ||
670 | sym_clear_all_valid(); | |
671 | ||
672 | /* Traverse all menus to find all relevant symbols */ | |
673 | menu = rootmenu.list; | |
674 | ||
675 | while (menu != NULL) | |
676 | { | |
677 | sym = menu->sym; | |
678 | if (sym == NULL) { | |
679 | if (!menu_is_visible(menu)) | |
680 | goto next_menu; | |
681 | } else if (!sym_is_choice(sym)) { | |
682 | sym_calc_value(sym); | |
683 | if (!(sym->flags & SYMBOL_WRITE)) | |
684 | goto next_menu; | |
685 | sym->flags &= ~SYMBOL_WRITE; | |
686 | /* If we cannot change the symbol - skip */ | |
687 | if (!sym_is_changable(sym)) | |
688 | goto next_menu; | |
689 | /* If symbol equals to default value - skip */ | |
690 | if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0) | |
691 | goto next_menu; | |
692 | ||
693 | /* | |
694 | * If symbol is a choice value and equals to the | |
695 | * default for a choice - skip. | |
696 | * But only if value is bool and equal to "y" and | |
697 | * choice is not "optional". | |
698 | * (If choice is "optional" then all values can be "n") | |
699 | */ | |
700 | if (sym_is_choice_value(sym)) { | |
701 | struct symbol *cs; | |
702 | struct symbol *ds; | |
703 | ||
704 | cs = prop_get_symbol(sym_get_choice_prop(sym)); | |
705 | ds = sym_choice_default(cs); | |
706 | if (!sym_is_optional(cs) && sym == ds) { | |
707 | if ((sym->type == S_BOOLEAN) && | |
708 | sym_get_tristate_value(sym) == yes) | |
709 | goto next_menu; | |
710 | } | |
711 | } | |
712 | conf_write_symbol(out, sym, &kconfig_printer_cb, NULL); | |
713 | } | |
714 | next_menu: | |
715 | if (menu->list != NULL) { | |
716 | menu = menu->list; | |
717 | } | |
718 | else if (menu->next != NULL) { | |
719 | menu = menu->next; | |
720 | } else { | |
721 | while ((menu = menu->parent)) { | |
722 | if (menu->next != NULL) { | |
723 | menu = menu->next; | |
724 | break; | |
725 | } | |
726 | } | |
727 | } | |
728 | } | |
729 | fclose(out); | |
730 | return 0; | |
731 | } | |
732 | ||
733 | int conf_write(const char *name) | |
734 | { | |
735 | FILE *out; | |
736 | struct symbol *sym; | |
737 | struct menu *menu; | |
738 | const char *basename; | |
739 | const char *str; | |
740 | char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1]; | |
741 | char *env; | |
742 | ||
743 | dirname[0] = 0; | |
744 | if (name && name[0]) { | |
745 | struct stat st; | |
746 | char *slash; | |
747 | ||
748 | if (!stat(name, &st) && S_ISDIR(st.st_mode)) { | |
749 | strcpy(dirname, name); | |
750 | strcat(dirname, "/"); | |
751 | basename = conf_get_configname(); | |
752 | } else if ((slash = strrchr(name, '/'))) { | |
753 | int size = slash - name + 1; | |
754 | memcpy(dirname, name, size); | |
755 | dirname[size] = 0; | |
756 | if (slash[1]) | |
757 | basename = slash + 1; | |
758 | else | |
759 | basename = conf_get_configname(); | |
760 | } else | |
761 | basename = name; | |
762 | } else | |
763 | basename = conf_get_configname(); | |
764 | ||
765 | sprintf(newname, "%s%s", dirname, basename); | |
766 | env = getenv("KCONFIG_OVERWRITECONFIG"); | |
767 | if (!env || !*env) { | |
768 | sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid()); | |
769 | out = fopen(tmpname, "w"); | |
770 | } else { | |
771 | *tmpname = 0; | |
772 | out = fopen(newname, "w"); | |
773 | } | |
774 | if (!out) | |
775 | return 1; | |
776 | ||
777 | conf_write_heading(out, &kconfig_printer_cb, NULL); | |
778 | ||
779 | if (!conf_get_changed()) | |
780 | sym_clear_all_valid(); | |
781 | ||
782 | menu = rootmenu.list; | |
783 | while (menu) { | |
784 | sym = menu->sym; | |
785 | if (!sym) { | |
786 | if (!menu_is_visible(menu)) | |
787 | goto next; | |
788 | str = menu_get_prompt(menu); | |
789 | fprintf(out, "\n" | |
790 | "#\n" | |
791 | "# %s\n" | |
792 | "#\n", str); | |
793 | } else if (!(sym->flags & SYMBOL_CHOICE)) { | |
794 | sym_calc_value(sym); | |
795 | if (!(sym->flags & SYMBOL_WRITE)) | |
796 | goto next; | |
797 | sym->flags &= ~SYMBOL_WRITE; | |
798 | ||
799 | conf_write_symbol(out, sym, &kconfig_printer_cb, NULL); | |
800 | } | |
801 | ||
802 | next: | |
803 | if (menu->list) { | |
804 | menu = menu->list; | |
805 | continue; | |
806 | } | |
807 | if (menu->next) | |
808 | menu = menu->next; | |
809 | else while ((menu = menu->parent)) { | |
810 | if (menu->next) { | |
811 | menu = menu->next; | |
812 | break; | |
813 | } | |
814 | } | |
815 | } | |
816 | fclose(out); | |
817 | ||
818 | if (*tmpname) { | |
819 | strcat(dirname, basename); | |
820 | strcat(dirname, ".old"); | |
821 | rename(newname, dirname); | |
822 | if (rename(tmpname, newname)) | |
823 | return 1; | |
824 | } | |
825 | ||
826 | conf_message(_("configuration written to %s"), newname); | |
827 | ||
828 | sym_set_change_count(0); | |
829 | ||
830 | return 0; | |
831 | } | |
832 | ||
833 | static int conf_split_config(void) | |
834 | { | |
835 | const char *name; | |
836 | char path[PATH_MAX+1]; | |
837 | char *s, *d, c; | |
838 | struct symbol *sym; | |
839 | struct stat sb; | |
840 | int res, i, fd; | |
841 | ||
842 | name = conf_get_autoconfig_name(); | |
843 | conf_read_simple(name, S_DEF_AUTO); | |
844 | ||
845 | if (chdir("include/config")) | |
846 | return 1; | |
847 | ||
848 | res = 0; | |
849 | for_all_symbols(i, sym) { | |
850 | sym_calc_value(sym); | |
851 | if ((sym->flags & SYMBOL_AUTO) || !sym->name) | |
852 | continue; | |
853 | if (sym->flags & SYMBOL_WRITE) { | |
854 | if (sym->flags & SYMBOL_DEF_AUTO) { | |
855 | /* | |
856 | * symbol has old and new value, | |
857 | * so compare them... | |
858 | */ | |
859 | switch (sym->type) { | |
860 | case S_BOOLEAN: | |
861 | case S_TRISTATE: | |
862 | if (sym_get_tristate_value(sym) == | |
863 | sym->def[S_DEF_AUTO].tri) | |
864 | continue; | |
865 | break; | |
866 | case S_STRING: | |
867 | case S_HEX: | |
868 | case S_INT: | |
869 | if (!strcmp(sym_get_string_value(sym), | |
870 | sym->def[S_DEF_AUTO].val)) | |
871 | continue; | |
872 | break; | |
873 | default: | |
874 | break; | |
875 | } | |
876 | } else { | |
877 | /* | |
878 | * If there is no old value, only 'no' (unset) | |
879 | * is allowed as new value. | |
880 | */ | |
881 | switch (sym->type) { | |
882 | case S_BOOLEAN: | |
883 | case S_TRISTATE: | |
884 | if (sym_get_tristate_value(sym) == no) | |
885 | continue; | |
886 | break; | |
887 | default: | |
888 | break; | |
889 | } | |
890 | } | |
891 | } else if (!(sym->flags & SYMBOL_DEF_AUTO)) | |
892 | /* There is neither an old nor a new value. */ | |
893 | continue; | |
894 | /* else | |
895 | * There is an old value, but no new value ('no' (unset) | |
896 | * isn't saved in auto.conf, so the old value is always | |
897 | * different from 'no'). | |
898 | */ | |
899 | ||
900 | /* Replace all '_' and append ".h" */ | |
901 | s = sym->name; | |
902 | d = path; | |
903 | while ((c = *s++)) { | |
904 | c = tolower(c); | |
905 | *d++ = (c == '_') ? '/' : c; | |
906 | } | |
907 | strcpy(d, ".h"); | |
908 | ||
909 | /* Assume directory path already exists. */ | |
910 | fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); | |
911 | if (fd == -1) { | |
912 | if (errno != ENOENT) { | |
913 | res = 1; | |
914 | break; | |
915 | } | |
916 | /* | |
917 | * Create directory components, | |
918 | * unless they exist already. | |
919 | */ | |
920 | d = path; | |
921 | while ((d = strchr(d, '/'))) { | |
922 | *d = 0; | |
923 | if (stat(path, &sb) && mkdir(path, 0755)) { | |
924 | res = 1; | |
925 | goto out; | |
926 | } | |
927 | *d++ = '/'; | |
928 | } | |
929 | /* Try it again. */ | |
930 | fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); | |
931 | if (fd == -1) { | |
932 | res = 1; | |
933 | break; | |
934 | } | |
935 | } | |
936 | close(fd); | |
937 | } | |
938 | out: | |
939 | if (chdir("../..")) | |
940 | return 1; | |
941 | ||
942 | return res; | |
943 | } | |
944 | ||
945 | int conf_write_autoconf(void) | |
946 | { | |
947 | struct symbol *sym; | |
948 | const char *name; | |
949 | FILE *out, *tristate, *out_h; | |
950 | int i; | |
951 | ||
952 | sym_clear_all_valid(); | |
953 | ||
954 | file_write_dep("include/config/auto.conf.cmd"); | |
955 | ||
956 | if (conf_split_config()) | |
957 | return 1; | |
958 | ||
959 | out = fopen(".tmpconfig", "w"); | |
960 | if (!out) | |
961 | return 1; | |
962 | ||
963 | tristate = fopen(".tmpconfig_tristate", "w"); | |
964 | if (!tristate) { | |
965 | fclose(out); | |
966 | return 1; | |
967 | } | |
968 | ||
969 | out_h = fopen(".tmpconfig.h", "w"); | |
970 | if (!out_h) { | |
971 | fclose(out); | |
972 | fclose(tristate); | |
973 | return 1; | |
974 | } | |
975 | ||
976 | conf_write_heading(out, &kconfig_printer_cb, NULL); | |
977 | ||
978 | conf_write_heading(tristate, &tristate_printer_cb, NULL); | |
979 | ||
980 | conf_write_heading(out_h, &header_printer_cb, NULL); | |
981 | ||
982 | for_all_symbols(i, sym) { | |
983 | sym_calc_value(sym); | |
984 | if (!(sym->flags & SYMBOL_WRITE) || !sym->name) | |
985 | continue; | |
986 | ||
987 | /* write symbol to auto.conf, tristate and header files */ | |
988 | conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1); | |
989 | ||
990 | conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1); | |
991 | ||
992 | conf_write_symbol(out_h, sym, &header_printer_cb, NULL); | |
993 | } | |
994 | fclose(out); | |
995 | fclose(tristate); | |
996 | fclose(out_h); | |
997 | ||
998 | name = getenv("KCONFIG_AUTOHEADER"); | |
999 | if (!name) | |
1000 | name = "include/generated/autoconf.h"; | |
1001 | if (rename(".tmpconfig.h", name)) | |
1002 | return 1; | |
1003 | name = getenv("KCONFIG_TRISTATE"); | |
1004 | if (!name) | |
1005 | name = "include/config/tristate.conf"; | |
1006 | if (rename(".tmpconfig_tristate", name)) | |
1007 | return 1; | |
1008 | name = conf_get_autoconfig_name(); | |
1009 | /* | |
1010 | * This must be the last step, kbuild has a dependency on auto.conf | |
1011 | * and this marks the successful completion of the previous steps. | |
1012 | */ | |
1013 | if (rename(".tmpconfig", name)) | |
1014 | return 1; | |
1015 | ||
1016 | return 0; | |
1017 | } | |
1018 | ||
1019 | static int sym_change_count; | |
1020 | static void (*conf_changed_callback)(void); | |
1021 | ||
1022 | void sym_set_change_count(int count) | |
1023 | { | |
1024 | int _sym_change_count = sym_change_count; | |
1025 | sym_change_count = count; | |
1026 | if (conf_changed_callback && | |
1027 | (bool)_sym_change_count != (bool)count) | |
1028 | conf_changed_callback(); | |
1029 | } | |
1030 | ||
1031 | void sym_add_change_count(int count) | |
1032 | { | |
1033 | sym_set_change_count(count + sym_change_count); | |
1034 | } | |
1035 | ||
1036 | bool conf_get_changed(void) | |
1037 | { | |
1038 | return sym_change_count; | |
1039 | } | |
1040 | ||
1041 | void conf_set_changed_callback(void (*fn)(void)) | |
1042 | { | |
1043 | conf_changed_callback = fn; | |
1044 | } | |
1045 | ||
1046 | static bool randomize_choice_values(struct symbol *csym) | |
1047 | { | |
1048 | struct property *prop; | |
1049 | struct symbol *sym; | |
1050 | struct expr *e; | |
1051 | int cnt, def; | |
1052 | ||
1053 | /* | |
1054 | * If choice is mod then we may have more items selected | |
1055 | * and if no then no-one. | |
1056 | * In both cases stop. | |
1057 | */ | |
1058 | if (csym->curr.tri != yes) | |
1059 | return false; | |
1060 | ||
1061 | prop = sym_get_choice_prop(csym); | |
1062 | ||
1063 | /* count entries in choice block */ | |
1064 | cnt = 0; | |
1065 | expr_list_for_each_sym(prop->expr, e, sym) | |
1066 | cnt++; | |
1067 | ||
1068 | /* | |
1069 | * find a random value and set it to yes, | |
1070 | * set the rest to no so we have only one set | |
1071 | */ | |
1072 | def = (rand() % cnt); | |
1073 | ||
1074 | cnt = 0; | |
1075 | expr_list_for_each_sym(prop->expr, e, sym) { | |
1076 | if (def == cnt++) { | |
1077 | sym->def[S_DEF_USER].tri = yes; | |
1078 | csym->def[S_DEF_USER].val = sym; | |
1079 | } | |
1080 | else { | |
1081 | sym->def[S_DEF_USER].tri = no; | |
1082 | } | |
1083 | sym->flags |= SYMBOL_DEF_USER; | |
1084 | /* clear VALID to get value calculated */ | |
1085 | sym->flags &= ~SYMBOL_VALID; | |
1086 | } | |
1087 | csym->flags |= SYMBOL_DEF_USER; | |
1088 | /* clear VALID to get value calculated */ | |
1089 | csym->flags &= ~(SYMBOL_VALID); | |
1090 | ||
1091 | return true; | |
1092 | } | |
1093 | ||
1094 | void set_all_choice_values(struct symbol *csym) | |
1095 | { | |
1096 | struct property *prop; | |
1097 | struct symbol *sym; | |
1098 | struct expr *e; | |
1099 | ||
1100 | prop = sym_get_choice_prop(csym); | |
1101 | ||
1102 | /* | |
1103 | * Set all non-assinged choice values to no | |
1104 | */ | |
1105 | expr_list_for_each_sym(prop->expr, e, sym) { | |
1106 | if (!sym_has_value(sym)) | |
1107 | sym->def[S_DEF_USER].tri = no; | |
1108 | } | |
1109 | csym->flags |= SYMBOL_DEF_USER; | |
1110 | /* clear VALID to get value calculated */ | |
1111 | csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES); | |
1112 | } | |
1113 | ||
1114 | bool conf_set_all_new_symbols(enum conf_def_mode mode) | |
1115 | { | |
1116 | struct symbol *sym, *csym; | |
1117 | int i, cnt, pby, pty, ptm; /* pby: probability of boolean = y | |
1118 | * pty: probability of tristate = y | |
1119 | * ptm: probability of tristate = m | |
1120 | */ | |
1121 | ||
1122 | pby = 50; pty = ptm = 33; /* can't go as the default in switch-case | |
1123 | * below, otherwise gcc whines about | |
1124 | * -Wmaybe-uninitialized */ | |
1125 | if (mode == def_random) { | |
1126 | int n, p[3]; | |
1127 | char *env = getenv("KCONFIG_PROBABILITY"); | |
1128 | n = 0; | |
1129 | while( env && *env ) { | |
1130 | char *endp; | |
1131 | int tmp = strtol( env, &endp, 10 ); | |
1132 | if( tmp >= 0 && tmp <= 100 ) { | |
1133 | p[n++] = tmp; | |
1134 | } else { | |
1135 | errno = ERANGE; | |
1136 | perror( "KCONFIG_PROBABILITY" ); | |
1137 | exit( 1 ); | |
1138 | } | |
1139 | env = (*endp == ':') ? endp+1 : endp; | |
1140 | if( n >=3 ) { | |
1141 | break; | |
1142 | } | |
1143 | } | |
1144 | switch( n ) { | |
1145 | case 1: | |
1146 | pby = p[0]; ptm = pby/2; pty = pby-ptm; | |
1147 | break; | |
1148 | case 2: | |
1149 | pty = p[0]; ptm = p[1]; pby = pty + ptm; | |
1150 | break; | |
1151 | case 3: | |
1152 | pby = p[0]; pty = p[1]; ptm = p[2]; | |
1153 | break; | |
1154 | } | |
1155 | ||
1156 | if( pty+ptm > 100 ) { | |
1157 | errno = ERANGE; | |
1158 | perror( "KCONFIG_PROBABILITY" ); | |
1159 | exit( 1 ); | |
1160 | } | |
1161 | } | |
1162 | bool has_changed = false; | |
1163 | ||
1164 | for_all_symbols(i, sym) { | |
1165 | if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID)) | |
1166 | continue; | |
1167 | switch (sym_get_type(sym)) { | |
1168 | case S_BOOLEAN: | |
1169 | case S_TRISTATE: | |
1170 | has_changed = true; | |
1171 | switch (mode) { | |
1172 | case def_yes: | |
1173 | sym->def[S_DEF_USER].tri = yes; | |
1174 | break; | |
1175 | case def_mod: | |
1176 | sym->def[S_DEF_USER].tri = mod; | |
1177 | break; | |
1178 | case def_no: | |
1179 | if (sym->flags & SYMBOL_ALLNOCONFIG_Y) | |
1180 | sym->def[S_DEF_USER].tri = yes; | |
1181 | else | |
1182 | sym->def[S_DEF_USER].tri = no; | |
1183 | break; | |
1184 | case def_random: | |
1185 | sym->def[S_DEF_USER].tri = no; | |
1186 | cnt = rand() % 100; | |
1187 | if (sym->type == S_TRISTATE) { | |
1188 | if (cnt < pty) | |
1189 | sym->def[S_DEF_USER].tri = yes; | |
1190 | else if (cnt < (pty+ptm)) | |
1191 | sym->def[S_DEF_USER].tri = mod; | |
1192 | } else if (cnt < pby) | |
1193 | sym->def[S_DEF_USER].tri = yes; | |
1194 | break; | |
1195 | default: | |
1196 | continue; | |
1197 | } | |
1198 | if (!(sym_is_choice(sym) && mode == def_random)) | |
1199 | sym->flags |= SYMBOL_DEF_USER; | |
1200 | break; | |
1201 | default: | |
1202 | break; | |
1203 | } | |
1204 | ||
1205 | } | |
1206 | ||
1207 | sym_clear_all_valid(); | |
1208 | ||
1209 | /* | |
1210 | * We have different type of choice blocks. | |
1211 | * If curr.tri equals to mod then we can select several | |
1212 | * choice symbols in one block. | |
1213 | * In this case we do nothing. | |
1214 | * If curr.tri equals yes then only one symbol can be | |
1215 | * selected in a choice block and we set it to yes, | |
1216 | * and the rest to no. | |
1217 | */ | |
1218 | if (mode != def_random) { | |
1219 | for_all_symbols(i, csym) { | |
1220 | if ((sym_is_choice(csym) && !sym_has_value(csym)) || | |
1221 | sym_is_choice_value(csym)) | |
1222 | csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES; | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | for_all_symbols(i, csym) { | |
1227 | if (sym_has_value(csym) || !sym_is_choice(csym)) | |
1228 | continue; | |
1229 | ||
1230 | sym_calc_value(csym); | |
1231 | if (mode == def_random) | |
1232 | has_changed = randomize_choice_values(csym); | |
1233 | else { | |
1234 | set_all_choice_values(csym); | |
1235 | has_changed = true; | |
1236 | } | |
1237 | } | |
1238 | ||
1239 | return has_changed; | |
1240 | } |