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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 | struct conf_printer { | |
20 | void (*print_symbol)(FILE *, struct symbol *, const char *, void *); | |
21 | void (*print_comment)(FILE *, const char *, void *); | |
22 | }; | |
23 | ||
24 | static void conf_warning(const char *fmt, ...) | |
25 | __attribute__ ((format (printf, 1, 2))); | |
26 | ||
27 | static void conf_message(const char *fmt, ...) | |
28 | __attribute__ ((format (printf, 1, 2))); | |
29 | ||
30 | static const char *conf_filename; | |
31 | static int conf_lineno, conf_warnings, conf_unsaved; | |
32 | ||
33 | const char conf_defname[] = "arch/$ARCH/defconfig"; | |
34 | ||
35 | static void conf_warning(const char *fmt, ...) | |
36 | { | |
37 | va_list ap; | |
38 | va_start(ap, fmt); | |
39 | fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno); | |
40 | vfprintf(stderr, fmt, ap); | |
41 | fprintf(stderr, "\n"); | |
42 | va_end(ap); | |
43 | conf_warnings++; | |
44 | } | |
45 | ||
46 | static void conf_default_message_callback(const char *fmt, va_list ap) | |
47 | { | |
48 | printf("#\n# "); | |
49 | vprintf(fmt, ap); | |
50 | printf("\n#\n"); | |
51 | } | |
52 | ||
53 | static void (*conf_message_callback) (const char *fmt, va_list ap) = | |
54 | conf_default_message_callback; | |
55 | void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap)) | |
56 | { | |
57 | conf_message_callback = fn; | |
58 | } | |
59 | ||
60 | static void conf_message(const char *fmt, ...) | |
61 | { | |
62 | va_list ap; | |
63 | ||
64 | va_start(ap, fmt); | |
65 | if (conf_message_callback) | |
66 | conf_message_callback(fmt, ap); | |
67 | va_end(ap); | |
68 | } | |
69 | ||
70 | const char *conf_get_configname(void) | |
71 | { | |
72 | char *name = getenv("KCONFIG_CONFIG"); | |
73 | ||
74 | return name ? name : ".config"; | |
75 | } | |
76 | ||
77 | const char *conf_get_autoconfig_name(void) | |
78 | { | |
79 | char *name = getenv("KCONFIG_AUTOCONFIG"); | |
80 | ||
81 | return name ? name : "include/config/auto.conf"; | |
82 | } | |
83 | ||
84 | static char *conf_expand_value(const char *in) | |
85 | { | |
86 | struct symbol *sym; | |
87 | const char *src; | |
88 | static char res_value[SYMBOL_MAXLENGTH]; | |
89 | char *dst, name[SYMBOL_MAXLENGTH]; | |
90 | ||
91 | res_value[0] = 0; | |
92 | dst = name; | |
93 | while ((src = strchr(in, '$'))) { | |
94 | strncat(res_value, in, src - in); | |
95 | src++; | |
96 | dst = name; | |
97 | while (isalnum(*src) || *src == '_') | |
98 | *dst++ = *src++; | |
99 | *dst = 0; | |
100 | sym = sym_lookup(name, 0); | |
101 | sym_calc_value(sym); | |
102 | strcat(res_value, sym_get_string_value(sym)); | |
103 | in = src; | |
104 | } | |
105 | strcat(res_value, in); | |
106 | ||
107 | return res_value; | |
108 | } | |
109 | ||
110 | char *conf_get_default_confname(void) | |
111 | { | |
112 | struct stat buf; | |
113 | static char fullname[PATH_MAX+1]; | |
114 | char *env, *name; | |
115 | ||
116 | name = conf_expand_value(conf_defname); | |
117 | env = getenv(SRCTREE); | |
118 | if (env) { | |
119 | sprintf(fullname, "%s/%s", env, name); | |
120 | if (!stat(fullname, &buf)) | |
121 | return fullname; | |
122 | } | |
123 | return name; | |
124 | } | |
125 | ||
126 | static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p) | |
127 | { | |
128 | char *p2; | |
129 | ||
130 | switch (sym->type) { | |
131 | case S_TRISTATE: | |
132 | if (p[0] == 'm') { | |
133 | sym->def[def].tri = mod; | |
134 | sym->flags |= def_flags; | |
135 | break; | |
136 | } | |
137 | /* fall through */ | |
138 | case S_BOOLEAN: | |
139 | if (p[0] == 'y') { | |
140 | sym->def[def].tri = yes; | |
141 | sym->flags |= def_flags; | |
142 | break; | |
143 | } | |
144 | if (p[0] == 'n') { | |
145 | sym->def[def].tri = no; | |
146 | sym->flags |= def_flags; | |
147 | break; | |
148 | } | |
149 | if (def != S_DEF_AUTO) | |
150 | conf_warning("symbol value '%s' invalid for %s", | |
151 | p, sym->name); | |
152 | return 1; | |
153 | case S_OTHER: | |
154 | if (*p != '"') { | |
155 | for (p2 = p; *p2 && !isspace(*p2); p2++) | |
156 | ; | |
157 | sym->type = S_STRING; | |
158 | goto done; | |
159 | } | |
160 | /* fall through */ | |
161 | case S_STRING: | |
162 | if (*p++ != '"') | |
163 | break; | |
164 | /* Last char has to be a '"' */ | |
165 | if (p[strlen(p) - 1] != '"') { | |
166 | if (def != S_DEF_AUTO) | |
167 | conf_warning("invalid string found"); | |
168 | return 1; | |
169 | } | |
170 | /* Overwrite '"' with \0 for string termination */ | |
171 | p[strlen(p) - 1] = 0; | |
172 | /* fall through */ | |
173 | case S_INT: | |
174 | case S_HEX: | |
175 | done: | |
176 | if (sym_string_valid(sym, p)) { | |
177 | sym->def[def].val = strdup(p); | |
178 | sym->flags |= def_flags; | |
179 | } else { | |
180 | if (def != S_DEF_AUTO) | |
181 | conf_warning("symbol value '%s' invalid for %s", | |
182 | p, sym->name); | |
183 | return 1; | |
184 | } | |
185 | break; | |
186 | default: | |
187 | ; | |
188 | } | |
189 | return 0; | |
190 | } | |
191 | ||
192 | #define LINE_GROWTH 16 | |
193 | static int add_byte(int c, char **lineptr, size_t slen, size_t *n) | |
194 | { | |
195 | char *nline; | |
196 | size_t new_size = slen + 1; | |
197 | if (new_size > *n) { | |
198 | new_size += LINE_GROWTH - 1; | |
199 | new_size *= 2; | |
200 | nline = realloc(*lineptr, new_size); | |
201 | if (!nline) | |
202 | return -1; | |
203 | ||
204 | *lineptr = nline; | |
205 | *n = new_size; | |
206 | } | |
207 | ||
208 | (*lineptr)[slen] = c; | |
209 | ||
210 | return 0; | |
211 | } | |
212 | ||
213 | static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream) | |
214 | { | |
215 | char *line = *lineptr; | |
216 | size_t slen = 0; | |
217 | ||
218 | for (;;) { | |
219 | int c = getc(stream); | |
220 | ||
221 | switch (c) { | |
222 | case '\n': | |
223 | if (add_byte(c, &line, slen, n) < 0) | |
224 | goto e_out; | |
225 | slen++; | |
226 | /* fall through */ | |
227 | case EOF: | |
228 | if (add_byte('\0', &line, slen, n) < 0) | |
229 | goto e_out; | |
230 | *lineptr = line; | |
231 | if (slen == 0) | |
232 | return -1; | |
233 | return slen; | |
234 | default: | |
235 | if (add_byte(c, &line, slen, n) < 0) | |
236 | goto e_out; | |
237 | slen++; | |
238 | } | |
239 | } | |
240 | ||
241 | e_out: | |
242 | line[slen-1] = '\0'; | |
243 | *lineptr = line; | |
244 | return -1; | |
245 | } | |
246 | ||
247 | int conf_read_simple(const char *name, int def) | |
248 | { | |
249 | FILE *in = NULL; | |
250 | char *line = NULL; | |
251 | size_t line_asize = 0; | |
252 | char *p, *p2; | |
253 | struct symbol *sym; | |
254 | int i, def_flags; | |
255 | ||
256 | if (name) { | |
257 | in = zconf_fopen(name); | |
258 | } else { | |
259 | struct property *prop; | |
260 | ||
261 | name = conf_get_configname(); | |
262 | in = zconf_fopen(name); | |
263 | if (in) | |
264 | goto load; | |
265 | sym_add_change_count(1); | |
266 | if (!sym_defconfig_list) { | |
267 | if (modules_sym) | |
268 | sym_calc_value(modules_sym); | |
269 | return 1; | |
270 | } | |
271 | ||
272 | for_all_defaults(sym_defconfig_list, prop) { | |
273 | if (expr_calc_value(prop->visible.expr) == no || | |
274 | prop->expr->type != E_SYMBOL) | |
275 | continue; | |
276 | name = conf_expand_value(prop->expr->left.sym->name); | |
277 | in = zconf_fopen(name); | |
278 | if (in) { | |
279 | conf_message(_("using defaults found in %s"), | |
280 | name); | |
281 | goto load; | |
282 | } | |
283 | } | |
284 | } | |
285 | if (!in) | |
286 | return 1; | |
287 | ||
288 | load: | |
289 | conf_filename = name; | |
290 | conf_lineno = 0; | |
291 | conf_warnings = 0; | |
292 | conf_unsaved = 0; | |
293 | ||
294 | def_flags = SYMBOL_DEF << def; | |
295 | for_all_symbols(i, sym) { | |
296 | sym->flags |= SYMBOL_CHANGED; | |
297 | sym->flags &= ~(def_flags|SYMBOL_VALID); | |
298 | if (sym_is_choice(sym)) | |
299 | sym->flags |= def_flags; | |
300 | switch (sym->type) { | |
301 | case S_INT: | |
302 | case S_HEX: | |
303 | case S_STRING: | |
304 | if (sym->def[def].val) | |
305 | free(sym->def[def].val); | |
306 | /* fall through */ | |
307 | default: | |
308 | sym->def[def].val = NULL; | |
309 | sym->def[def].tri = no; | |
310 | } | |
311 | } | |
312 | ||
313 | while (compat_getline(&line, &line_asize, in) != -1) { | |
314 | conf_lineno++; | |
315 | sym = NULL; | |
316 | if (line[0] == '#') { | |
317 | if (memcmp(line + 2, CONFIG_, strlen(CONFIG_))) | |
318 | continue; | |
319 | p = strchr(line + 2 + strlen(CONFIG_), ' '); | |
320 | if (!p) | |
321 | continue; | |
322 | *p++ = 0; | |
323 | if (strncmp(p, "is not set", 10)) | |
324 | continue; | |
325 | if (def == S_DEF_USER) { | |
326 | sym = sym_find(line + 2 + strlen(CONFIG_)); | |
327 | if (!sym) { | |
328 | sym_add_change_count(1); | |
329 | goto setsym; | |
330 | } | |
331 | } else { | |
332 | sym = sym_lookup(line + 2 + strlen(CONFIG_), 0); | |
333 | if (sym->type == S_UNKNOWN) | |
334 | sym->type = S_BOOLEAN; | |
335 | } | |
336 | if (sym->flags & def_flags) { | |
337 | conf_warning("override: reassigning to symbol %s", sym->name); | |
338 | } | |
339 | switch (sym->type) { | |
340 | case S_BOOLEAN: | |
341 | case S_TRISTATE: | |
342 | sym->def[def].tri = no; | |
343 | sym->flags |= def_flags; | |
344 | break; | |
345 | default: | |
346 | ; | |
347 | } | |
348 | } else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) { | |
349 | p = strchr(line + strlen(CONFIG_), '='); | |
350 | if (!p) | |
351 | continue; | |
352 | *p++ = 0; | |
353 | p2 = strchr(p, '\n'); | |
354 | if (p2) { | |
355 | *p2-- = 0; | |
356 | if (*p2 == '\r') | |
357 | *p2 = 0; | |
358 | } | |
359 | if (def == S_DEF_USER) { | |
360 | sym = sym_find(line + strlen(CONFIG_)); | |
361 | if (!sym) { | |
362 | sym_add_change_count(1); | |
363 | goto setsym; | |
364 | } | |
365 | } else { | |
366 | sym = sym_lookup(line + strlen(CONFIG_), 0); | |
367 | if (sym->type == S_UNKNOWN) | |
368 | sym->type = S_OTHER; | |
369 | } | |
370 | if (sym->flags & def_flags) { | |
371 | conf_warning("override: reassigning to symbol %s", sym->name); | |
372 | } | |
373 | if (conf_set_sym_val(sym, def, def_flags, p)) | |
374 | continue; | |
375 | } else { | |
376 | if (line[0] != '\r' && line[0] != '\n') | |
377 | conf_warning("unexpected data"); | |
378 | continue; | |
379 | } | |
380 | setsym: | |
381 | if (sym && sym_is_choice_value(sym)) { | |
382 | struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); | |
383 | switch (sym->def[def].tri) { | |
384 | case no: | |
385 | break; | |
386 | case mod: | |
387 | if (cs->def[def].tri == yes) { | |
388 | conf_warning("%s creates inconsistent choice state", sym->name); | |
389 | cs->flags &= ~def_flags; | |
390 | } | |
391 | break; | |
392 | case yes: | |
393 | if (cs->def[def].tri != no) | |
394 | conf_warning("override: %s changes choice state", sym->name); | |
395 | cs->def[def].val = sym; | |
396 | break; | |
397 | } | |
398 | cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri); | |
399 | } | |
400 | } | |
401 | free(line); | |
402 | fclose(in); | |
403 | ||
404 | if (modules_sym) | |
405 | sym_calc_value(modules_sym); | |
406 | return 0; | |
407 | } | |
408 | ||
409 | int conf_read(const char *name) | |
410 | { | |
411 | struct symbol *sym; | |
412 | int i; | |
413 | ||
414 | sym_set_change_count(0); | |
415 | ||
416 | if (conf_read_simple(name, S_DEF_USER)) | |
417 | return 1; | |
418 | ||
419 | for_all_symbols(i, sym) { | |
420 | sym_calc_value(sym); | |
421 | if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO)) | |
422 | continue; | |
423 | if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) { | |
424 | /* check that calculated value agrees with saved value */ | |
425 | switch (sym->type) { | |
426 | case S_BOOLEAN: | |
427 | case S_TRISTATE: | |
428 | if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym)) | |
429 | break; | |
430 | if (!sym_is_choice(sym)) | |
431 | continue; | |
432 | /* fall through */ | |
433 | default: | |
434 | if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val)) | |
435 | continue; | |
436 | break; | |
437 | } | |
438 | } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE)) | |
439 | /* no previous value and not saved */ | |
440 | continue; | |
441 | conf_unsaved++; | |
442 | /* maybe print value in verbose mode... */ | |
443 | } | |
444 | ||
445 | for_all_symbols(i, sym) { | |
446 | if (sym_has_value(sym) && !sym_is_choice_value(sym)) { | |
447 | /* Reset values of generates values, so they'll appear | |
448 | * as new, if they should become visible, but that | |
449 | * doesn't quite work if the Kconfig and the saved | |
450 | * configuration disagree. | |
451 | */ | |
452 | if (sym->visible == no && !conf_unsaved) | |
453 | sym->flags &= ~SYMBOL_DEF_USER; | |
454 | switch (sym->type) { | |
455 | case S_STRING: | |
456 | case S_INT: | |
457 | case S_HEX: | |
458 | /* Reset a string value if it's out of range */ | |
459 | if (sym_string_within_range(sym, sym->def[S_DEF_USER].val)) | |
460 | break; | |
461 | sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER); | |
462 | conf_unsaved++; | |
463 | break; | |
464 | default: | |
465 | break; | |
466 | } | |
467 | } | |
468 | } | |
469 | ||
470 | sym_add_change_count(conf_warnings || conf_unsaved); | |
471 | ||
472 | return 0; | |
473 | } | |
474 | ||
475 | /* | |
476 | * Kconfig configuration printer | |
477 | * | |
478 | * This printer is used when generating the resulting configuration after | |
479 | * kconfig invocation and `defconfig' files. Unset symbol might be omitted by | |
480 | * passing a non-NULL argument to the printer. | |
481 | * | |
482 | */ | |
483 | static void | |
484 | kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) | |
485 | { | |
486 | ||
487 | switch (sym->type) { | |
488 | case S_BOOLEAN: | |
489 | case S_TRISTATE: | |
490 | if (*value == 'n') { | |
491 | bool skip_unset = (arg != NULL); | |
492 | ||
493 | if (!skip_unset) | |
494 | fprintf(fp, "# %s%s is not set\n", | |
495 | CONFIG_, sym->name); | |
496 | return; | |
497 | } | |
498 | break; | |
499 | default: | |
500 | break; | |
501 | } | |
502 | ||
503 | fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value); | |
504 | } | |
505 | ||
506 | static void | |
507 | kconfig_print_comment(FILE *fp, const char *value, void *arg) | |
508 | { | |
509 | const char *p = value; | |
510 | size_t l; | |
511 | ||
512 | for (;;) { | |
513 | l = strcspn(p, "\n"); | |
514 | fprintf(fp, "#"); | |
515 | if (l) { | |
516 | fprintf(fp, " "); | |
517 | xfwrite(p, l, 1, fp); | |
518 | p += l; | |
519 | } | |
520 | fprintf(fp, "\n"); | |
521 | if (*p++ == '\0') | |
522 | break; | |
523 | } | |
524 | } | |
525 | ||
526 | static struct conf_printer kconfig_printer_cb = | |
527 | { | |
528 | .print_symbol = kconfig_print_symbol, | |
529 | .print_comment = kconfig_print_comment, | |
530 | }; | |
531 | ||
532 | /* | |
533 | * Header printer | |
534 | * | |
535 | * This printer is used when generating the `include/generated/autoconf.h' file. | |
536 | */ | |
537 | static void | |
538 | header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) | |
539 | { | |
540 | ||
541 | switch (sym->type) { | |
542 | case S_BOOLEAN: | |
543 | case S_TRISTATE: { | |
544 | const char *suffix = ""; | |
545 | ||
546 | switch (*value) { | |
547 | case 'n': | |
548 | break; | |
549 | case 'm': | |
550 | suffix = "_MODULE"; | |
551 | /* fall through */ | |
552 | default: | |
553 | fprintf(fp, "#define %s%s%s 1\n", | |
554 | CONFIG_, sym->name, suffix); | |
555 | } | |
556 | break; | |
557 | } | |
558 | case S_HEX: { | |
559 | const char *prefix = ""; | |
560 | ||
561 | if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X')) | |
562 | prefix = "0x"; | |
563 | fprintf(fp, "#define %s%s %s%s\n", | |
564 | CONFIG_, sym->name, prefix, value); | |
565 | break; | |
566 | } | |
567 | case S_STRING: | |
568 | case S_INT: | |
569 | fprintf(fp, "#define %s%s %s\n", | |
570 | CONFIG_, sym->name, value); | |
571 | break; | |
572 | default: | |
573 | break; | |
574 | } | |
575 | ||
576 | } | |
577 | ||
578 | static void | |
579 | header_print_comment(FILE *fp, const char *value, void *arg) | |
580 | { | |
581 | const char *p = value; | |
582 | size_t l; | |
583 | ||
584 | fprintf(fp, "/*\n"); | |
585 | for (;;) { | |
586 | l = strcspn(p, "\n"); | |
587 | fprintf(fp, " *"); | |
588 | if (l) { | |
589 | fprintf(fp, " "); | |
590 | xfwrite(p, l, 1, fp); | |
591 | p += l; | |
592 | } | |
593 | fprintf(fp, "\n"); | |
594 | if (*p++ == '\0') | |
595 | break; | |
596 | } | |
597 | fprintf(fp, " */\n"); | |
598 | } | |
599 | ||
600 | static struct conf_printer header_printer_cb = | |
601 | { | |
602 | .print_symbol = header_print_symbol, | |
603 | .print_comment = header_print_comment, | |
604 | }; | |
605 | ||
606 | /* | |
607 | * Tristate printer | |
608 | * | |
609 | * This printer is used when generating the `include/config/tristate.conf' file. | |
610 | */ | |
611 | static void | |
612 | tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg) | |
613 | { | |
614 | ||
615 | if (sym->type == S_TRISTATE && *value != 'n') | |
616 | fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value)); | |
617 | } | |
618 | ||
619 | static struct conf_printer tristate_printer_cb = | |
620 | { | |
621 | .print_symbol = tristate_print_symbol, | |
622 | .print_comment = kconfig_print_comment, | |
623 | }; | |
624 | ||
625 | static void conf_write_symbol(FILE *fp, struct symbol *sym, | |
626 | struct conf_printer *printer, void *printer_arg) | |
627 | { | |
628 | const char *str; | |
629 | char *str2; | |
630 | ||
631 | switch (sym->type) { | |
632 | case S_OTHER: | |
633 | case S_UNKNOWN: | |
634 | break; | |
635 | case S_STRING: | |
636 | str = sym_get_string_value(sym); | |
637 | str2 = xmalloc(strlen(str) + 3); | |
638 | sprintf(str2, "\"%s\"", str); | |
639 | printer->print_symbol(fp, sym, str2, printer_arg); | |
640 | free((void *)str2); | |
641 | break; | |
642 | default: | |
643 | str = sym_get_string_value(sym); | |
644 | printer->print_symbol(fp, sym, str, printer_arg); | |
645 | } | |
646 | } | |
647 | ||
648 | static void | |
649 | conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg) | |
650 | { | |
651 | char buf[256]; | |
652 | ||
653 | snprintf(buf, sizeof(buf), | |
654 | "\n" | |
655 | "Automatically generated file; DO NOT EDIT.\n" | |
656 | "%s\n", | |
657 | rootmenu.prompt->text); | |
658 | ||
659 | printer->print_comment(fp, buf, printer_arg); | |
660 | } | |
661 | ||
662 | /* | |
663 | * Write out a minimal config. | |
664 | * All values that has default values are skipped as this is redundant. | |
665 | */ | |
666 | int conf_write_defconfig(const char *filename) | |
667 | { | |
668 | struct symbol *sym; | |
669 | struct menu *menu; | |
670 | FILE *out; | |
671 | ||
672 | out = fopen(filename, "w"); | |
673 | if (!out) | |
674 | return 1; | |
675 | ||
676 | sym_clear_all_valid(); | |
677 | ||
678 | /* Traverse all menus to find all relevant symbols */ | |
679 | menu = rootmenu.list; | |
680 | ||
681 | while (menu != NULL) | |
682 | { | |
683 | sym = menu->sym; | |
684 | if (sym == NULL) { | |
685 | if (!menu_is_visible(menu)) | |
686 | goto next_menu; | |
687 | } else if (!sym_is_choice(sym)) { | |
688 | sym_calc_value(sym); | |
689 | if (!(sym->flags & SYMBOL_WRITE)) | |
690 | goto next_menu; | |
691 | sym->flags &= ~SYMBOL_WRITE; | |
692 | /* If we cannot change the symbol - skip */ | |
693 | if (!sym_is_changable(sym)) | |
694 | goto next_menu; | |
695 | /* If symbol equals to default value - skip */ | |
696 | if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0) | |
697 | goto next_menu; | |
698 | ||
699 | /* | |
700 | * If symbol is a choice value and equals to the | |
701 | * default for a choice - skip. | |
702 | * But only if value is bool and equal to "y" and | |
703 | * choice is not "optional". | |
704 | * (If choice is "optional" then all values can be "n") | |
705 | */ | |
706 | if (sym_is_choice_value(sym)) { | |
707 | struct symbol *cs; | |
708 | struct symbol *ds; | |
709 | ||
710 | cs = prop_get_symbol(sym_get_choice_prop(sym)); | |
711 | ds = sym_choice_default(cs); | |
712 | if (!sym_is_optional(cs) && sym == ds) { | |
713 | if ((sym->type == S_BOOLEAN) && | |
714 | sym_get_tristate_value(sym) == yes) | |
715 | goto next_menu; | |
716 | } | |
717 | } | |
718 | conf_write_symbol(out, sym, &kconfig_printer_cb, NULL); | |
719 | } | |
720 | next_menu: | |
721 | if (menu->list != NULL) { | |
722 | menu = menu->list; | |
723 | } | |
724 | else if (menu->next != NULL) { | |
725 | menu = menu->next; | |
726 | } else { | |
727 | while ((menu = menu->parent)) { | |
728 | if (menu->next != NULL) { | |
729 | menu = menu->next; | |
730 | break; | |
731 | } | |
732 | } | |
733 | } | |
734 | } | |
735 | fclose(out); | |
736 | return 0; | |
737 | } | |
738 | ||
739 | int conf_write(const char *name) | |
740 | { | |
741 | FILE *out; | |
742 | struct symbol *sym; | |
743 | struct menu *menu; | |
744 | const char *basename; | |
745 | const char *str; | |
746 | char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1]; | |
747 | char *env; | |
748 | ||
749 | dirname[0] = 0; | |
750 | if (name && name[0]) { | |
751 | struct stat st; | |
752 | char *slash; | |
753 | ||
754 | if (!stat(name, &st) && S_ISDIR(st.st_mode)) { | |
755 | strcpy(dirname, name); | |
756 | strcat(dirname, "/"); | |
757 | basename = conf_get_configname(); | |
758 | } else if ((slash = strrchr(name, '/'))) { | |
759 | int size = slash - name + 1; | |
760 | memcpy(dirname, name, size); | |
761 | dirname[size] = 0; | |
762 | if (slash[1]) | |
763 | basename = slash + 1; | |
764 | else | |
765 | basename = conf_get_configname(); | |
766 | } else | |
767 | basename = name; | |
768 | } else | |
769 | basename = conf_get_configname(); | |
770 | ||
771 | sprintf(newname, "%s%s", dirname, basename); | |
772 | env = getenv("KCONFIG_OVERWRITECONFIG"); | |
773 | if (!env || !*env) { | |
774 | sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid()); | |
775 | out = fopen(tmpname, "w"); | |
776 | } else { | |
777 | *tmpname = 0; | |
778 | out = fopen(newname, "w"); | |
779 | } | |
780 | if (!out) | |
781 | return 1; | |
782 | ||
783 | conf_write_heading(out, &kconfig_printer_cb, NULL); | |
784 | ||
785 | if (!conf_get_changed()) | |
786 | sym_clear_all_valid(); | |
787 | ||
788 | menu = rootmenu.list; | |
789 | while (menu) { | |
790 | sym = menu->sym; | |
791 | if (!sym) { | |
792 | if (!menu_is_visible(menu)) | |
793 | goto next; | |
794 | str = menu_get_prompt(menu); | |
795 | fprintf(out, "\n" | |
796 | "#\n" | |
797 | "# %s\n" | |
798 | "#\n", str); | |
799 | } else if (!(sym->flags & SYMBOL_CHOICE)) { | |
800 | sym_calc_value(sym); | |
801 | if (!(sym->flags & SYMBOL_WRITE)) | |
802 | goto next; | |
803 | sym->flags &= ~SYMBOL_WRITE; | |
804 | ||
805 | conf_write_symbol(out, sym, &kconfig_printer_cb, NULL); | |
806 | } | |
807 | ||
808 | next: | |
809 | if (menu->list) { | |
810 | menu = menu->list; | |
811 | continue; | |
812 | } | |
813 | if (menu->next) | |
814 | menu = menu->next; | |
815 | else while ((menu = menu->parent)) { | |
816 | if (menu->next) { | |
817 | menu = menu->next; | |
818 | break; | |
819 | } | |
820 | } | |
821 | } | |
822 | fclose(out); | |
823 | ||
824 | if (*tmpname) { | |
825 | strcat(dirname, basename); | |
826 | strcat(dirname, ".old"); | |
827 | rename(newname, dirname); | |
828 | if (rename(tmpname, newname)) | |
829 | return 1; | |
830 | } | |
831 | ||
832 | conf_message(_("configuration written to %s"), newname); | |
833 | ||
834 | sym_set_change_count(0); | |
835 | ||
836 | return 0; | |
837 | } | |
838 | ||
839 | static int conf_split_config(void) | |
840 | { | |
841 | const char *name; | |
842 | char path[PATH_MAX+1]; | |
843 | char *s, *d, c; | |
844 | struct symbol *sym; | |
845 | struct stat sb; | |
846 | int res, i, fd; | |
847 | ||
848 | name = conf_get_autoconfig_name(); | |
849 | conf_read_simple(name, S_DEF_AUTO); | |
850 | ||
851 | if (chdir("include/config")) | |
852 | return 1; | |
853 | ||
854 | res = 0; | |
855 | for_all_symbols(i, sym) { | |
856 | sym_calc_value(sym); | |
857 | if ((sym->flags & SYMBOL_AUTO) || !sym->name) | |
858 | continue; | |
859 | if (sym->flags & SYMBOL_WRITE) { | |
860 | if (sym->flags & SYMBOL_DEF_AUTO) { | |
861 | /* | |
862 | * symbol has old and new value, | |
863 | * so compare them... | |
864 | */ | |
865 | switch (sym->type) { | |
866 | case S_BOOLEAN: | |
867 | case S_TRISTATE: | |
868 | if (sym_get_tristate_value(sym) == | |
869 | sym->def[S_DEF_AUTO].tri) | |
870 | continue; | |
871 | break; | |
872 | case S_STRING: | |
873 | case S_HEX: | |
874 | case S_INT: | |
875 | if (!strcmp(sym_get_string_value(sym), | |
876 | sym->def[S_DEF_AUTO].val)) | |
877 | continue; | |
878 | break; | |
879 | default: | |
880 | break; | |
881 | } | |
882 | } else { | |
883 | /* | |
884 | * If there is no old value, only 'no' (unset) | |
885 | * is allowed as new value. | |
886 | */ | |
887 | switch (sym->type) { | |
888 | case S_BOOLEAN: | |
889 | case S_TRISTATE: | |
890 | if (sym_get_tristate_value(sym) == no) | |
891 | continue; | |
892 | break; | |
893 | default: | |
894 | break; | |
895 | } | |
896 | } | |
897 | } else if (!(sym->flags & SYMBOL_DEF_AUTO)) | |
898 | /* There is neither an old nor a new value. */ | |
899 | continue; | |
900 | /* else | |
901 | * There is an old value, but no new value ('no' (unset) | |
902 | * isn't saved in auto.conf, so the old value is always | |
903 | * different from 'no'). | |
904 | */ | |
905 | ||
906 | /* Replace all '_' and append ".h" */ | |
907 | s = sym->name; | |
908 | d = path; | |
909 | while ((c = *s++)) { | |
910 | c = tolower(c); | |
911 | *d++ = (c == '_') ? '/' : c; | |
912 | } | |
913 | strcpy(d, ".h"); | |
914 | ||
915 | /* Assume directory path already exists. */ | |
916 | fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); | |
917 | if (fd == -1) { | |
918 | if (errno != ENOENT) { | |
919 | res = 1; | |
920 | break; | |
921 | } | |
922 | /* | |
923 | * Create directory components, | |
924 | * unless they exist already. | |
925 | */ | |
926 | d = path; | |
927 | while ((d = strchr(d, '/'))) { | |
928 | *d = 0; | |
929 | if (stat(path, &sb) && mkdir(path, 0755)) { | |
930 | res = 1; | |
931 | goto out; | |
932 | } | |
933 | *d++ = '/'; | |
934 | } | |
935 | /* Try it again. */ | |
936 | fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); | |
937 | if (fd == -1) { | |
938 | res = 1; | |
939 | break; | |
940 | } | |
941 | } | |
942 | close(fd); | |
943 | } | |
944 | out: | |
945 | if (chdir("../..")) | |
946 | return 1; | |
947 | ||
948 | return res; | |
949 | } | |
950 | ||
951 | int conf_write_autoconf(void) | |
952 | { | |
953 | struct symbol *sym; | |
954 | const char *name; | |
955 | FILE *out, *tristate, *out_h; | |
956 | int i; | |
957 | ||
958 | sym_clear_all_valid(); | |
959 | ||
960 | file_write_dep("include/config/auto.conf.cmd"); | |
961 | ||
962 | if (conf_split_config()) | |
963 | return 1; | |
964 | ||
965 | out = fopen(".tmpconfig", "w"); | |
966 | if (!out) | |
967 | return 1; | |
968 | ||
969 | tristate = fopen(".tmpconfig_tristate", "w"); | |
970 | if (!tristate) { | |
971 | fclose(out); | |
972 | return 1; | |
973 | } | |
974 | ||
975 | out_h = fopen(".tmpconfig.h", "w"); | |
976 | if (!out_h) { | |
977 | fclose(out); | |
978 | fclose(tristate); | |
979 | return 1; | |
980 | } | |
981 | ||
982 | conf_write_heading(out, &kconfig_printer_cb, NULL); | |
983 | ||
984 | conf_write_heading(tristate, &tristate_printer_cb, NULL); | |
985 | ||
986 | conf_write_heading(out_h, &header_printer_cb, NULL); | |
987 | ||
988 | for_all_symbols(i, sym) { | |
989 | sym_calc_value(sym); | |
990 | if (!(sym->flags & SYMBOL_WRITE) || !sym->name) | |
991 | continue; | |
992 | ||
993 | /* write symbol to auto.conf, tristate and header files */ | |
994 | conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1); | |
995 | ||
996 | conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1); | |
997 | ||
998 | conf_write_symbol(out_h, sym, &header_printer_cb, NULL); | |
999 | } | |
1000 | fclose(out); | |
1001 | fclose(tristate); | |
1002 | fclose(out_h); | |
1003 | ||
1004 | name = getenv("KCONFIG_AUTOHEADER"); | |
1005 | if (!name) | |
1006 | name = "include/generated/autoconf.h"; | |
1007 | if (rename(".tmpconfig.h", name)) | |
1008 | return 1; | |
1009 | name = getenv("KCONFIG_TRISTATE"); | |
1010 | if (!name) | |
1011 | name = "include/config/tristate.conf"; | |
1012 | if (rename(".tmpconfig_tristate", name)) | |
1013 | return 1; | |
1014 | name = conf_get_autoconfig_name(); | |
1015 | /* | |
1016 | * This must be the last step, kbuild has a dependency on auto.conf | |
1017 | * and this marks the successful completion of the previous steps. | |
1018 | */ | |
1019 | if (rename(".tmpconfig", name)) | |
1020 | return 1; | |
1021 | ||
1022 | return 0; | |
1023 | } | |
1024 | ||
1025 | static int sym_change_count; | |
1026 | static void (*conf_changed_callback)(void); | |
1027 | ||
1028 | void sym_set_change_count(int count) | |
1029 | { | |
1030 | int _sym_change_count = sym_change_count; | |
1031 | sym_change_count = count; | |
1032 | if (conf_changed_callback && | |
1033 | (bool)_sym_change_count != (bool)count) | |
1034 | conf_changed_callback(); | |
1035 | } | |
1036 | ||
1037 | void sym_add_change_count(int count) | |
1038 | { | |
1039 | sym_set_change_count(count + sym_change_count); | |
1040 | } | |
1041 | ||
1042 | bool conf_get_changed(void) | |
1043 | { | |
1044 | return sym_change_count; | |
1045 | } | |
1046 | ||
1047 | void conf_set_changed_callback(void (*fn)(void)) | |
1048 | { | |
1049 | conf_changed_callback = fn; | |
1050 | } | |
1051 | ||
1052 | static bool randomize_choice_values(struct symbol *csym) | |
1053 | { | |
1054 | struct property *prop; | |
1055 | struct symbol *sym; | |
1056 | struct expr *e; | |
1057 | int cnt, def; | |
1058 | ||
1059 | /* | |
1060 | * If choice is mod then we may have more items selected | |
1061 | * and if no then no-one. | |
1062 | * In both cases stop. | |
1063 | */ | |
1064 | if (csym->curr.tri != yes) | |
1065 | return false; | |
1066 | ||
1067 | prop = sym_get_choice_prop(csym); | |
1068 | ||
1069 | /* count entries in choice block */ | |
1070 | cnt = 0; | |
1071 | expr_list_for_each_sym(prop->expr, e, sym) | |
1072 | cnt++; | |
1073 | ||
1074 | /* | |
1075 | * find a random value and set it to yes, | |
1076 | * set the rest to no so we have only one set | |
1077 | */ | |
1078 | def = (rand() % cnt); | |
1079 | ||
1080 | cnt = 0; | |
1081 | expr_list_for_each_sym(prop->expr, e, sym) { | |
1082 | if (def == cnt++) { | |
1083 | sym->def[S_DEF_USER].tri = yes; | |
1084 | csym->def[S_DEF_USER].val = sym; | |
1085 | } | |
1086 | else { | |
1087 | sym->def[S_DEF_USER].tri = no; | |
1088 | } | |
1089 | sym->flags |= SYMBOL_DEF_USER; | |
1090 | /* clear VALID to get value calculated */ | |
1091 | sym->flags &= ~SYMBOL_VALID; | |
1092 | } | |
1093 | csym->flags |= SYMBOL_DEF_USER; | |
1094 | /* clear VALID to get value calculated */ | |
1095 | csym->flags &= ~(SYMBOL_VALID); | |
1096 | ||
1097 | return true; | |
1098 | } | |
1099 | ||
1100 | void set_all_choice_values(struct symbol *csym) | |
1101 | { | |
1102 | struct property *prop; | |
1103 | struct symbol *sym; | |
1104 | struct expr *e; | |
1105 | ||
1106 | prop = sym_get_choice_prop(csym); | |
1107 | ||
1108 | /* | |
1109 | * Set all non-assinged choice values to no | |
1110 | */ | |
1111 | expr_list_for_each_sym(prop->expr, e, sym) { | |
1112 | if (!sym_has_value(sym)) | |
1113 | sym->def[S_DEF_USER].tri = no; | |
1114 | } | |
1115 | csym->flags |= SYMBOL_DEF_USER; | |
1116 | /* clear VALID to get value calculated */ | |
1117 | csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES); | |
1118 | } | |
1119 | ||
1120 | bool conf_set_all_new_symbols(enum conf_def_mode mode) | |
1121 | { | |
1122 | struct symbol *sym, *csym; | |
1123 | int i, cnt, pby, pty, ptm; /* pby: probability of boolean = y | |
1124 | * pty: probability of tristate = y | |
1125 | * ptm: probability of tristate = m | |
1126 | */ | |
1127 | ||
1128 | pby = 50; pty = ptm = 33; /* can't go as the default in switch-case | |
1129 | * below, otherwise gcc whines about | |
1130 | * -Wmaybe-uninitialized */ | |
1131 | if (mode == def_random) { | |
1132 | int n, p[3]; | |
1133 | char *env = getenv("KCONFIG_PROBABILITY"); | |
1134 | n = 0; | |
1135 | while( env && *env ) { | |
1136 | char *endp; | |
1137 | int tmp = strtol( env, &endp, 10 ); | |
1138 | if( tmp >= 0 && tmp <= 100 ) { | |
1139 | p[n++] = tmp; | |
1140 | } else { | |
1141 | errno = ERANGE; | |
1142 | perror( "KCONFIG_PROBABILITY" ); | |
1143 | exit( 1 ); | |
1144 | } | |
1145 | env = (*endp == ':') ? endp+1 : endp; | |
1146 | if( n >=3 ) { | |
1147 | break; | |
1148 | } | |
1149 | } | |
1150 | switch( n ) { | |
1151 | case 1: | |
1152 | pby = p[0]; ptm = pby/2; pty = pby-ptm; | |
1153 | break; | |
1154 | case 2: | |
1155 | pty = p[0]; ptm = p[1]; pby = pty + ptm; | |
1156 | break; | |
1157 | case 3: | |
1158 | pby = p[0]; pty = p[1]; ptm = p[2]; | |
1159 | break; | |
1160 | } | |
1161 | ||
1162 | if( pty+ptm > 100 ) { | |
1163 | errno = ERANGE; | |
1164 | perror( "KCONFIG_PROBABILITY" ); | |
1165 | exit( 1 ); | |
1166 | } | |
1167 | } | |
1168 | bool has_changed = false; | |
1169 | ||
1170 | for_all_symbols(i, sym) { | |
1171 | if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID)) | |
1172 | continue; | |
1173 | switch (sym_get_type(sym)) { | |
1174 | case S_BOOLEAN: | |
1175 | case S_TRISTATE: | |
1176 | has_changed = true; | |
1177 | switch (mode) { | |
1178 | case def_yes: | |
1179 | sym->def[S_DEF_USER].tri = yes; | |
1180 | break; | |
1181 | case def_mod: | |
1182 | sym->def[S_DEF_USER].tri = mod; | |
1183 | break; | |
1184 | case def_no: | |
1185 | if (sym->flags & SYMBOL_ALLNOCONFIG_Y) | |
1186 | sym->def[S_DEF_USER].tri = yes; | |
1187 | else | |
1188 | sym->def[S_DEF_USER].tri = no; | |
1189 | break; | |
1190 | case def_random: | |
1191 | sym->def[S_DEF_USER].tri = no; | |
1192 | cnt = rand() % 100; | |
1193 | if (sym->type == S_TRISTATE) { | |
1194 | if (cnt < pty) | |
1195 | sym->def[S_DEF_USER].tri = yes; | |
1196 | else if (cnt < (pty+ptm)) | |
1197 | sym->def[S_DEF_USER].tri = mod; | |
1198 | } else if (cnt < pby) | |
1199 | sym->def[S_DEF_USER].tri = yes; | |
1200 | break; | |
1201 | default: | |
1202 | continue; | |
1203 | } | |
1204 | if (!(sym_is_choice(sym) && mode == def_random)) | |
1205 | sym->flags |= SYMBOL_DEF_USER; | |
1206 | break; | |
1207 | default: | |
1208 | break; | |
1209 | } | |
1210 | ||
1211 | } | |
1212 | ||
1213 | sym_clear_all_valid(); | |
1214 | ||
1215 | /* | |
1216 | * We have different type of choice blocks. | |
1217 | * If curr.tri equals to mod then we can select several | |
1218 | * choice symbols in one block. | |
1219 | * In this case we do nothing. | |
1220 | * If curr.tri equals yes then only one symbol can be | |
1221 | * selected in a choice block and we set it to yes, | |
1222 | * and the rest to no. | |
1223 | */ | |
1224 | if (mode != def_random) { | |
1225 | for_all_symbols(i, csym) { | |
1226 | if ((sym_is_choice(csym) && !sym_has_value(csym)) || | |
1227 | sym_is_choice_value(csym)) | |
1228 | csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES; | |
1229 | } | |
1230 | } | |
1231 | ||
1232 | for_all_symbols(i, csym) { | |
1233 | if (sym_has_value(csym) || !sym_is_choice(csym)) | |
1234 | continue; | |
1235 | ||
1236 | sym_calc_value(csym); | |
1237 | if (mode == def_random) | |
1238 | has_changed = randomize_choice_values(csym); | |
1239 | else { | |
1240 | set_all_choice_values(csym); | |
1241 | has_changed = true; | |
1242 | } | |
1243 | } | |
1244 | ||
1245 | return has_changed; | |
1246 | } |