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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/$ARCH/defconfig"; |
25 | ||
c1a0f5e3 RZ |
26 | static void conf_warning(const char *fmt, ...) |
27 | { | |
28 | va_list ap; | |
29 | va_start(ap, fmt); | |
30 | fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno); | |
31 | vfprintf(stderr, fmt, ap); | |
32 | fprintf(stderr, "\n"); | |
33 | va_end(ap); | |
34 | conf_warnings++; | |
35 | } | |
36 | ||
14cdd3c4 RZ |
37 | const char *conf_get_configname(void) |
38 | { | |
39 | char *name = getenv("KCONFIG_CONFIG"); | |
40 | ||
41 | return name ? name : ".config"; | |
42 | } | |
43 | ||
48b9d03c | 44 | static char *conf_expand_value(const char *in) |
1da177e4 LT |
45 | { |
46 | struct symbol *sym; | |
48b9d03c | 47 | const char *src; |
1da177e4 LT |
48 | static char res_value[SYMBOL_MAXLENGTH]; |
49 | char *dst, name[SYMBOL_MAXLENGTH]; | |
50 | ||
51 | res_value[0] = 0; | |
52 | dst = name; | |
53 | while ((src = strchr(in, '$'))) { | |
54 | strncat(res_value, in, src - in); | |
55 | src++; | |
56 | dst = name; | |
57 | while (isalnum(*src) || *src == '_') | |
58 | *dst++ = *src++; | |
59 | *dst = 0; | |
60 | sym = sym_lookup(name, 0); | |
61 | sym_calc_value(sym); | |
62 | strcat(res_value, sym_get_string_value(sym)); | |
63 | in = src; | |
64 | } | |
65 | strcat(res_value, in); | |
66 | ||
67 | return res_value; | |
68 | } | |
69 | ||
70 | char *conf_get_default_confname(void) | |
71 | { | |
72 | struct stat buf; | |
73 | static char fullname[PATH_MAX+1]; | |
74 | char *env, *name; | |
75 | ||
76 | name = conf_expand_value(conf_defname); | |
77 | env = getenv(SRCTREE); | |
78 | if (env) { | |
79 | sprintf(fullname, "%s/%s", env, name); | |
80 | if (!stat(fullname, &buf)) | |
81 | return fullname; | |
82 | } | |
83 | return name; | |
84 | } | |
85 | ||
9c900a9c SR |
86 | static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p) |
87 | { | |
88 | char *p2; | |
89 | ||
90 | switch (sym->type) { | |
91 | case S_TRISTATE: | |
92 | if (p[0] == 'm') { | |
93 | sym->def[def].tri = mod; | |
94 | sym->flags |= def_flags; | |
95 | break; | |
96 | } | |
97 | case S_BOOLEAN: | |
98 | if (p[0] == 'y') { | |
99 | sym->def[def].tri = yes; | |
100 | sym->flags |= def_flags; | |
101 | break; | |
102 | } | |
103 | if (p[0] == 'n') { | |
104 | sym->def[def].tri = no; | |
105 | sym->flags |= def_flags; | |
106 | break; | |
107 | } | |
108 | conf_warning("symbol value '%s' invalid for %s", p, sym->name); | |
109 | break; | |
110 | case S_OTHER: | |
111 | if (*p != '"') { | |
112 | for (p2 = p; *p2 && !isspace(*p2); p2++) | |
113 | ; | |
114 | sym->type = S_STRING; | |
115 | goto done; | |
116 | } | |
117 | case S_STRING: | |
118 | if (*p++ != '"') | |
119 | break; | |
120 | for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) { | |
121 | if (*p2 == '"') { | |
122 | *p2 = 0; | |
123 | break; | |
124 | } | |
125 | memmove(p2, p2 + 1, strlen(p2)); | |
126 | } | |
127 | if (!p2) { | |
128 | conf_warning("invalid string found"); | |
129 | return 1; | |
130 | } | |
131 | case S_INT: | |
132 | case S_HEX: | |
133 | done: | |
134 | if (sym_string_valid(sym, p)) { | |
135 | sym->def[def].val = strdup(p); | |
136 | sym->flags |= def_flags; | |
137 | } else { | |
138 | conf_warning("symbol value '%s' invalid for %s", p, sym->name); | |
139 | return 1; | |
140 | } | |
141 | break; | |
142 | default: | |
143 | ; | |
144 | } | |
145 | return 0; | |
146 | } | |
147 | ||
669bfad9 | 148 | int conf_read_simple(const char *name, int def) |
1da177e4 LT |
149 | { |
150 | FILE *in = NULL; | |
151 | char line[1024]; | |
152 | char *p, *p2; | |
1da177e4 | 153 | struct symbol *sym; |
669bfad9 | 154 | int i, def_flags; |
1da177e4 LT |
155 | |
156 | if (name) { | |
157 | in = zconf_fopen(name); | |
158 | } else { | |
face4374 RZ |
159 | struct property *prop; |
160 | ||
14cdd3c4 | 161 | name = conf_get_configname(); |
ddc97cac RZ |
162 | in = zconf_fopen(name); |
163 | if (in) | |
164 | goto load; | |
bfc10001 | 165 | sym_add_change_count(1); |
face4374 RZ |
166 | if (!sym_defconfig_list) |
167 | return 1; | |
168 | ||
169 | for_all_defaults(sym_defconfig_list, prop) { | |
170 | if (expr_calc_value(prop->visible.expr) == no || | |
171 | prop->expr->type != E_SYMBOL) | |
172 | continue; | |
173 | name = conf_expand_value(prop->expr->left.sym->name); | |
1da177e4 LT |
174 | in = zconf_fopen(name); |
175 | if (in) { | |
3b9fa093 | 176 | printf(_("#\n" |
ddc97cac RZ |
177 | "# using defaults found in %s\n" |
178 | "#\n"), name); | |
179 | goto load; | |
1da177e4 LT |
180 | } |
181 | } | |
182 | } | |
1da177e4 LT |
183 | if (!in) |
184 | return 1; | |
185 | ||
ddc97cac | 186 | load: |
c1a0f5e3 RZ |
187 | conf_filename = name; |
188 | conf_lineno = 0; | |
189 | conf_warnings = 0; | |
190 | conf_unsaved = 0; | |
191 | ||
669bfad9 | 192 | def_flags = SYMBOL_DEF << def; |
1da177e4 | 193 | for_all_symbols(i, sym) { |
669bfad9 RZ |
194 | sym->flags |= SYMBOL_CHANGED; |
195 | sym->flags &= ~(def_flags|SYMBOL_VALID); | |
c1a0f5e3 | 196 | if (sym_is_choice(sym)) |
669bfad9 | 197 | sym->flags |= def_flags; |
1da177e4 LT |
198 | switch (sym->type) { |
199 | case S_INT: | |
200 | case S_HEX: | |
201 | case S_STRING: | |
669bfad9 RZ |
202 | if (sym->def[def].val) |
203 | free(sym->def[def].val); | |
1da177e4 | 204 | default: |
669bfad9 RZ |
205 | sym->def[def].val = NULL; |
206 | sym->def[def].tri = no; | |
1da177e4 LT |
207 | } |
208 | } | |
209 | ||
210 | while (fgets(line, sizeof(line), in)) { | |
c1a0f5e3 | 211 | conf_lineno++; |
1da177e4 LT |
212 | sym = NULL; |
213 | switch (line[0]) { | |
214 | case '#': | |
215 | if (memcmp(line + 2, "CONFIG_", 7)) | |
216 | continue; | |
217 | p = strchr(line + 9, ' '); | |
218 | if (!p) | |
219 | continue; | |
220 | *p++ = 0; | |
221 | if (strncmp(p, "is not set", 10)) | |
222 | continue; | |
669bfad9 RZ |
223 | if (def == S_DEF_USER) { |
224 | sym = sym_find(line + 9); | |
225 | if (!sym) { | |
226 | conf_warning("trying to assign nonexistent symbol %s", line + 9); | |
227 | break; | |
228 | } | |
229 | } else { | |
230 | sym = sym_lookup(line + 9, 0); | |
231 | if (sym->type == S_UNKNOWN) | |
232 | sym->type = S_BOOLEAN; | |
233 | } | |
234 | if (sym->flags & def_flags) { | |
c1a0f5e3 | 235 | conf_warning("trying to reassign symbol %s", sym->name); |
1da177e4 LT |
236 | break; |
237 | } | |
238 | switch (sym->type) { | |
239 | case S_BOOLEAN: | |
240 | case S_TRISTATE: | |
669bfad9 RZ |
241 | sym->def[def].tri = no; |
242 | sym->flags |= def_flags; | |
1da177e4 LT |
243 | break; |
244 | default: | |
245 | ; | |
246 | } | |
247 | break; | |
248 | case 'C': | |
c1a0f5e3 RZ |
249 | if (memcmp(line, "CONFIG_", 7)) { |
250 | conf_warning("unexpected data"); | |
1da177e4 | 251 | continue; |
c1a0f5e3 | 252 | } |
1da177e4 LT |
253 | p = strchr(line + 7, '='); |
254 | if (!p) | |
255 | continue; | |
256 | *p++ = 0; | |
257 | p2 = strchr(p, '\n'); | |
d3660a8c MW |
258 | if (p2) { |
259 | *p2-- = 0; | |
260 | if (*p2 == '\r') | |
261 | *p2 = 0; | |
262 | } | |
669bfad9 RZ |
263 | if (def == S_DEF_USER) { |
264 | sym = sym_find(line + 7); | |
265 | if (!sym) { | |
266 | conf_warning("trying to assign nonexistent symbol %s", line + 7); | |
267 | break; | |
268 | } | |
269 | } else { | |
270 | sym = sym_lookup(line + 7, 0); | |
271 | if (sym->type == S_UNKNOWN) | |
272 | sym->type = S_OTHER; | |
273 | } | |
274 | if (sym->flags & def_flags) { | |
c1a0f5e3 | 275 | conf_warning("trying to reassign symbol %s", sym->name); |
1da177e4 LT |
276 | break; |
277 | } | |
9c900a9c SR |
278 | if (conf_set_sym_val(sym, def, def_flags, p)) |
279 | continue; | |
1da177e4 | 280 | break; |
d3660a8c | 281 | case '\r': |
1da177e4 LT |
282 | case '\n': |
283 | break; | |
284 | default: | |
c1a0f5e3 | 285 | conf_warning("unexpected data"); |
1da177e4 LT |
286 | continue; |
287 | } | |
288 | if (sym && sym_is_choice_value(sym)) { | |
289 | struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); | |
669bfad9 | 290 | switch (sym->def[def].tri) { |
1da177e4 LT |
291 | case no: |
292 | break; | |
293 | case mod: | |
669bfad9 | 294 | if (cs->def[def].tri == yes) { |
c1a0f5e3 | 295 | conf_warning("%s creates inconsistent choice state", sym->name); |
669bfad9 | 296 | cs->flags &= ~def_flags; |
c1a0f5e3 | 297 | } |
1da177e4 LT |
298 | break; |
299 | case yes: | |
669bfad9 | 300 | if (cs->def[def].tri != no) { |
c1a0f5e3 | 301 | conf_warning("%s creates inconsistent choice state", sym->name); |
669bfad9 | 302 | cs->flags &= ~def_flags; |
c1a0f5e3 | 303 | } else |
669bfad9 | 304 | cs->def[def].val = sym; |
1da177e4 LT |
305 | break; |
306 | } | |
669bfad9 | 307 | cs->def[def].tri = E_OR(cs->def[def].tri, sym->def[def].tri); |
1da177e4 LT |
308 | } |
309 | } | |
310 | fclose(in); | |
311 | ||
312 | if (modules_sym) | |
313 | sym_calc_value(modules_sym); | |
90389160 RZ |
314 | return 0; |
315 | } | |
316 | ||
317 | int conf_read(const char *name) | |
318 | { | |
319 | struct symbol *sym; | |
320 | struct property *prop; | |
321 | struct expr *e; | |
669bfad9 | 322 | int i, flags; |
90389160 | 323 | |
bfc10001 | 324 | sym_set_change_count(0); |
ddc97cac | 325 | |
669bfad9 | 326 | if (conf_read_simple(name, S_DEF_USER)) |
90389160 RZ |
327 | return 1; |
328 | ||
1da177e4 LT |
329 | for_all_symbols(i, sym) { |
330 | sym_calc_value(sym); | |
c1a0f5e3 RZ |
331 | if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO)) |
332 | goto sym_ok; | |
333 | if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) { | |
334 | /* check that calculated value agrees with saved value */ | |
335 | switch (sym->type) { | |
336 | case S_BOOLEAN: | |
337 | case S_TRISTATE: | |
0c1822e6 | 338 | if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym)) |
c1a0f5e3 RZ |
339 | break; |
340 | if (!sym_is_choice(sym)) | |
341 | goto sym_ok; | |
342 | default: | |
0c1822e6 | 343 | if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val)) |
c1a0f5e3 RZ |
344 | goto sym_ok; |
345 | break; | |
346 | } | |
347 | } else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE)) | |
348 | /* no previous value and not saved */ | |
349 | goto sym_ok; | |
350 | conf_unsaved++; | |
351 | /* maybe print value in verbose mode... */ | |
352 | sym_ok: | |
d8982ba1 RZ |
353 | if (!sym_is_choice(sym)) |
354 | continue; | |
355 | /* The choice symbol only has a set value (and thus is not new) | |
356 | * if all its visible childs have values. | |
357 | */ | |
358 | prop = sym_get_choice_prop(sym); | |
359 | flags = sym->flags; | |
360 | for (e = prop->expr; e; e = e->left.expr) | |
361 | if (e->right.sym->visible != no) | |
362 | flags &= e->right.sym->flags; | |
363 | sym->flags &= flags | ~SYMBOL_DEF_USER; | |
364 | } | |
365 | ||
366 | for_all_symbols(i, sym) { | |
1da177e4 | 367 | if (sym_has_value(sym) && !sym_is_choice_value(sym)) { |
d8982ba1 RZ |
368 | /* Reset values of generates values, so they'll appear |
369 | * as new, if they should become visible, but that | |
370 | * doesn't quite work if the Kconfig and the saved | |
371 | * configuration disagree. | |
372 | */ | |
373 | if (sym->visible == no && !conf_unsaved) | |
669bfad9 | 374 | sym->flags &= ~SYMBOL_DEF_USER; |
1da177e4 LT |
375 | switch (sym->type) { |
376 | case S_STRING: | |
377 | case S_INT: | |
378 | case S_HEX: | |
d8982ba1 RZ |
379 | /* Reset a string value if it's out of range */ |
380 | if (sym_string_within_range(sym, sym->def[S_DEF_USER].val)) | |
381 | break; | |
382 | sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER); | |
383 | conf_unsaved++; | |
384 | break; | |
1da177e4 LT |
385 | default: |
386 | break; | |
387 | } | |
388 | } | |
1da177e4 LT |
389 | } |
390 | ||
bfc10001 | 391 | sym_add_change_count(conf_warnings || conf_unsaved); |
1da177e4 LT |
392 | |
393 | return 0; | |
394 | } | |
395 | ||
396 | int conf_write(const char *name) | |
397 | { | |
c955ccaf | 398 | FILE *out; |
1da177e4 LT |
399 | struct symbol *sym; |
400 | struct menu *menu; | |
401 | const char *basename; | |
402 | char dirname[128], tmpname[128], newname[128]; | |
403 | int type, l; | |
404 | const char *str; | |
405 | time_t now; | |
406 | int use_timestamp = 1; | |
407 | char *env; | |
408 | ||
409 | dirname[0] = 0; | |
410 | if (name && name[0]) { | |
411 | struct stat st; | |
412 | char *slash; | |
413 | ||
414 | if (!stat(name, &st) && S_ISDIR(st.st_mode)) { | |
415 | strcpy(dirname, name); | |
416 | strcat(dirname, "/"); | |
14cdd3c4 | 417 | basename = conf_get_configname(); |
1da177e4 LT |
418 | } else if ((slash = strrchr(name, '/'))) { |
419 | int size = slash - name + 1; | |
420 | memcpy(dirname, name, size); | |
421 | dirname[size] = 0; | |
422 | if (slash[1]) | |
423 | basename = slash + 1; | |
424 | else | |
14cdd3c4 | 425 | basename = conf_get_configname(); |
1da177e4 LT |
426 | } else |
427 | basename = name; | |
428 | } else | |
14cdd3c4 | 429 | basename = conf_get_configname(); |
1da177e4 | 430 | |
14cdd3c4 RZ |
431 | sprintf(newname, "%s%s", dirname, basename); |
432 | env = getenv("KCONFIG_OVERWRITECONFIG"); | |
433 | if (!env || !*env) { | |
434 | sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid()); | |
435 | out = fopen(tmpname, "w"); | |
436 | } else { | |
437 | *tmpname = 0; | |
438 | out = fopen(newname, "w"); | |
439 | } | |
1da177e4 LT |
440 | if (!out) |
441 | return 1; | |
14cdd3c4 | 442 | |
2244cbd8 | 443 | sym = sym_lookup("KERNELVERSION", 0); |
1da177e4 LT |
444 | sym_calc_value(sym); |
445 | time(&now); | |
446 | env = getenv("KCONFIG_NOTIMESTAMP"); | |
447 | if (env && *env) | |
448 | use_timestamp = 0; | |
449 | ||
3b9fa093 ACM |
450 | fprintf(out, _("#\n" |
451 | "# Automatically generated make config: don't edit\n" | |
452 | "# Linux kernel version: %s\n" | |
453 | "%s%s" | |
454 | "#\n"), | |
1da177e4 LT |
455 | sym_get_string_value(sym), |
456 | use_timestamp ? "# " : "", | |
457 | use_timestamp ? ctime(&now) : ""); | |
1da177e4 | 458 | |
b3214293 | 459 | if (!conf_get_changed()) |
1da177e4 LT |
460 | sym_clear_all_valid(); |
461 | ||
462 | menu = rootmenu.list; | |
463 | while (menu) { | |
464 | sym = menu->sym; | |
465 | if (!sym) { | |
466 | if (!menu_is_visible(menu)) | |
467 | goto next; | |
468 | str = menu_get_prompt(menu); | |
469 | fprintf(out, "\n" | |
470 | "#\n" | |
471 | "# %s\n" | |
472 | "#\n", str); | |
1da177e4 LT |
473 | } else if (!(sym->flags & SYMBOL_CHOICE)) { |
474 | sym_calc_value(sym); | |
475 | if (!(sym->flags & SYMBOL_WRITE)) | |
476 | goto next; | |
477 | sym->flags &= ~SYMBOL_WRITE; | |
478 | type = sym->type; | |
479 | if (type == S_TRISTATE) { | |
480 | sym_calc_value(modules_sym); | |
481 | if (modules_sym->curr.tri == no) | |
482 | type = S_BOOLEAN; | |
483 | } | |
484 | switch (type) { | |
485 | case S_BOOLEAN: | |
486 | case S_TRISTATE: | |
487 | switch (sym_get_tristate_value(sym)) { | |
488 | case no: | |
489 | fprintf(out, "# CONFIG_%s is not set\n", sym->name); | |
1da177e4 LT |
490 | break; |
491 | case mod: | |
492 | fprintf(out, "CONFIG_%s=m\n", sym->name); | |
1da177e4 LT |
493 | break; |
494 | case yes: | |
495 | fprintf(out, "CONFIG_%s=y\n", sym->name); | |
1da177e4 LT |
496 | break; |
497 | } | |
498 | break; | |
499 | case S_STRING: | |
1da177e4 LT |
500 | str = sym_get_string_value(sym); |
501 | fprintf(out, "CONFIG_%s=\"", sym->name); | |
c955ccaf | 502 | while (1) { |
1da177e4 LT |
503 | l = strcspn(str, "\"\\"); |
504 | if (l) { | |
505 | fwrite(str, l, 1, out); | |
c955ccaf | 506 | str += l; |
1da177e4 | 507 | } |
c955ccaf RZ |
508 | if (!*str) |
509 | break; | |
510 | fprintf(out, "\\%c", *str++); | |
511 | } | |
1da177e4 | 512 | fputs("\"\n", out); |
1da177e4 LT |
513 | break; |
514 | case S_HEX: | |
515 | str = sym_get_string_value(sym); | |
516 | if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) { | |
517 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str); | |
1da177e4 LT |
518 | break; |
519 | } | |
520 | case S_INT: | |
521 | str = sym_get_string_value(sym); | |
522 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str); | |
1da177e4 LT |
523 | break; |
524 | } | |
525 | } | |
526 | ||
527 | next: | |
528 | if (menu->list) { | |
529 | menu = menu->list; | |
530 | continue; | |
531 | } | |
532 | if (menu->next) | |
533 | menu = menu->next; | |
534 | else while ((menu = menu->parent)) { | |
535 | if (menu->next) { | |
536 | menu = menu->next; | |
537 | break; | |
538 | } | |
539 | } | |
540 | } | |
541 | fclose(out); | |
14cdd3c4 RZ |
542 | |
543 | if (*tmpname) { | |
9a3d0fe8 | 544 | strcat(dirname, basename); |
14cdd3c4 RZ |
545 | strcat(dirname, ".old"); |
546 | rename(newname, dirname); | |
547 | if (rename(tmpname, newname)) | |
548 | return 1; | |
1da177e4 | 549 | } |
1da177e4 | 550 | |
ddc97cac RZ |
551 | printf(_("#\n" |
552 | "# configuration written to %s\n" | |
14cdd3c4 | 553 | "#\n"), newname); |
ddc97cac | 554 | |
bfc10001 | 555 | sym_set_change_count(0); |
1da177e4 LT |
556 | |
557 | return 0; | |
558 | } | |
c955ccaf | 559 | |
2e3646e5 RZ |
560 | int conf_split_config(void) |
561 | { | |
562 | char *name, path[128]; | |
563 | char *s, *d, c; | |
564 | struct symbol *sym; | |
565 | struct stat sb; | |
566 | int res, i, fd; | |
567 | ||
568 | name = getenv("KCONFIG_AUTOCONFIG"); | |
569 | if (!name) | |
570 | name = "include/config/auto.conf"; | |
571 | conf_read_simple(name, S_DEF_AUTO); | |
572 | ||
573 | if (chdir("include/config")) | |
574 | return 1; | |
575 | ||
576 | res = 0; | |
577 | for_all_symbols(i, sym) { | |
578 | sym_calc_value(sym); | |
579 | if ((sym->flags & SYMBOL_AUTO) || !sym->name) | |
580 | continue; | |
581 | if (sym->flags & SYMBOL_WRITE) { | |
582 | if (sym->flags & SYMBOL_DEF_AUTO) { | |
583 | /* | |
584 | * symbol has old and new value, | |
585 | * so compare them... | |
586 | */ | |
587 | switch (sym->type) { | |
588 | case S_BOOLEAN: | |
589 | case S_TRISTATE: | |
590 | if (sym_get_tristate_value(sym) == | |
591 | sym->def[S_DEF_AUTO].tri) | |
592 | continue; | |
593 | break; | |
594 | case S_STRING: | |
595 | case S_HEX: | |
596 | case S_INT: | |
597 | if (!strcmp(sym_get_string_value(sym), | |
598 | sym->def[S_DEF_AUTO].val)) | |
599 | continue; | |
600 | break; | |
601 | default: | |
602 | break; | |
603 | } | |
604 | } else { | |
605 | /* | |
606 | * If there is no old value, only 'no' (unset) | |
607 | * is allowed as new value. | |
608 | */ | |
609 | switch (sym->type) { | |
610 | case S_BOOLEAN: | |
611 | case S_TRISTATE: | |
612 | if (sym_get_tristate_value(sym) == no) | |
613 | continue; | |
614 | break; | |
615 | default: | |
616 | break; | |
617 | } | |
618 | } | |
619 | } else if (!(sym->flags & SYMBOL_DEF_AUTO)) | |
620 | /* There is neither an old nor a new value. */ | |
621 | continue; | |
622 | /* else | |
623 | * There is an old value, but no new value ('no' (unset) | |
624 | * isn't saved in auto.conf, so the old value is always | |
625 | * different from 'no'). | |
626 | */ | |
627 | ||
628 | /* Replace all '_' and append ".h" */ | |
629 | s = sym->name; | |
630 | d = path; | |
631 | while ((c = *s++)) { | |
632 | c = tolower(c); | |
633 | *d++ = (c == '_') ? '/' : c; | |
634 | } | |
635 | strcpy(d, ".h"); | |
636 | ||
637 | /* Assume directory path already exists. */ | |
638 | fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); | |
639 | if (fd == -1) { | |
640 | if (errno != ENOENT) { | |
641 | res = 1; | |
642 | break; | |
643 | } | |
644 | /* | |
645 | * Create directory components, | |
646 | * unless they exist already. | |
647 | */ | |
648 | d = path; | |
649 | while ((d = strchr(d, '/'))) { | |
650 | *d = 0; | |
651 | if (stat(path, &sb) && mkdir(path, 0755)) { | |
652 | res = 1; | |
653 | goto out; | |
654 | } | |
655 | *d++ = '/'; | |
656 | } | |
657 | /* Try it again. */ | |
658 | fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); | |
659 | if (fd == -1) { | |
660 | res = 1; | |
661 | break; | |
662 | } | |
663 | } | |
664 | close(fd); | |
665 | } | |
666 | out: | |
667 | if (chdir("../..")) | |
668 | return 1; | |
669 | ||
670 | return res; | |
671 | } | |
672 | ||
c955ccaf RZ |
673 | int conf_write_autoconf(void) |
674 | { | |
675 | struct symbol *sym; | |
676 | const char *str; | |
677 | char *name; | |
678 | FILE *out, *out_h; | |
679 | time_t now; | |
680 | int i, l; | |
681 | ||
2e3646e5 RZ |
682 | sym_clear_all_valid(); |
683 | ||
c955ccaf RZ |
684 | file_write_dep("include/config/auto.conf.cmd"); |
685 | ||
2e3646e5 RZ |
686 | if (conf_split_config()) |
687 | return 1; | |
688 | ||
c955ccaf RZ |
689 | out = fopen(".tmpconfig", "w"); |
690 | if (!out) | |
691 | return 1; | |
692 | ||
693 | out_h = fopen(".tmpconfig.h", "w"); | |
694 | if (!out_h) { | |
695 | fclose(out); | |
696 | return 1; | |
697 | } | |
698 | ||
699 | sym = sym_lookup("KERNELVERSION", 0); | |
700 | sym_calc_value(sym); | |
701 | time(&now); | |
702 | fprintf(out, "#\n" | |
703 | "# Automatically generated make config: don't edit\n" | |
704 | "# Linux kernel version: %s\n" | |
705 | "# %s" | |
706 | "#\n", | |
707 | sym_get_string_value(sym), ctime(&now)); | |
708 | fprintf(out_h, "/*\n" | |
709 | " * Automatically generated C config: don't edit\n" | |
710 | " * Linux kernel version: %s\n" | |
711 | " * %s" | |
712 | " */\n" | |
713 | "#define AUTOCONF_INCLUDED\n", | |
714 | sym_get_string_value(sym), ctime(&now)); | |
715 | ||
c955ccaf RZ |
716 | for_all_symbols(i, sym) { |
717 | sym_calc_value(sym); | |
718 | if (!(sym->flags & SYMBOL_WRITE) || !sym->name) | |
719 | continue; | |
720 | switch (sym->type) { | |
721 | case S_BOOLEAN: | |
722 | case S_TRISTATE: | |
723 | switch (sym_get_tristate_value(sym)) { | |
724 | case no: | |
725 | break; | |
726 | case mod: | |
727 | fprintf(out, "CONFIG_%s=m\n", sym->name); | |
728 | fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name); | |
729 | break; | |
730 | case yes: | |
731 | fprintf(out, "CONFIG_%s=y\n", sym->name); | |
732 | fprintf(out_h, "#define CONFIG_%s 1\n", sym->name); | |
733 | break; | |
734 | } | |
735 | break; | |
736 | case S_STRING: | |
737 | str = sym_get_string_value(sym); | |
738 | fprintf(out, "CONFIG_%s=\"", sym->name); | |
739 | fprintf(out_h, "#define CONFIG_%s \"", sym->name); | |
740 | while (1) { | |
741 | l = strcspn(str, "\"\\"); | |
742 | if (l) { | |
743 | fwrite(str, l, 1, out); | |
744 | fwrite(str, l, 1, out_h); | |
745 | str += l; | |
746 | } | |
747 | if (!*str) | |
748 | break; | |
749 | fprintf(out, "\\%c", *str); | |
750 | fprintf(out_h, "\\%c", *str); | |
751 | str++; | |
752 | } | |
753 | fputs("\"\n", out); | |
754 | fputs("\"\n", out_h); | |
755 | break; | |
756 | case S_HEX: | |
757 | str = sym_get_string_value(sym); | |
758 | if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) { | |
759 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str); | |
760 | fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str); | |
761 | break; | |
762 | } | |
763 | case S_INT: | |
764 | str = sym_get_string_value(sym); | |
765 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str); | |
766 | fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str); | |
767 | break; | |
768 | default: | |
769 | break; | |
770 | } | |
771 | } | |
772 | fclose(out); | |
773 | fclose(out_h); | |
774 | ||
775 | name = getenv("KCONFIG_AUTOHEADER"); | |
776 | if (!name) | |
777 | name = "include/linux/autoconf.h"; | |
778 | if (rename(".tmpconfig.h", name)) | |
779 | return 1; | |
780 | name = getenv("KCONFIG_AUTOCONFIG"); | |
781 | if (!name) | |
782 | name = "include/config/auto.conf"; | |
783 | /* | |
784 | * This must be the last step, kbuild has a dependency on auto.conf | |
785 | * and this marks the successful completion of the previous steps. | |
786 | */ | |
787 | if (rename(".tmpconfig", name)) | |
788 | return 1; | |
789 | ||
790 | return 0; | |
791 | } | |
b3214293 | 792 | |
bfc10001 | 793 | static int sym_change_count; |
3b354c55 | 794 | static void (*conf_changed_callback)(void); |
bfc10001 KW |
795 | |
796 | void sym_set_change_count(int count) | |
797 | { | |
3b354c55 | 798 | int _sym_change_count = sym_change_count; |
bfc10001 | 799 | sym_change_count = count; |
3b354c55 KW |
800 | if (conf_changed_callback && |
801 | (bool)_sym_change_count != (bool)count) | |
802 | conf_changed_callback(); | |
bfc10001 KW |
803 | } |
804 | ||
805 | void sym_add_change_count(int count) | |
806 | { | |
3b354c55 | 807 | sym_set_change_count(count + sym_change_count); |
bfc10001 KW |
808 | } |
809 | ||
b3214293 KW |
810 | bool conf_get_changed(void) |
811 | { | |
812 | return sym_change_count; | |
813 | } | |
3b354c55 KW |
814 | |
815 | void conf_set_changed_callback(void (*fn)(void)) | |
816 | { | |
817 | conf_changed_callback = fn; | |
818 | } |