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