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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; | |
103 | sym_change_count++; | |
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 | |
ddc97cac RZ |
315 | sym_change_count = 0; |
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: | |
1da177e4 LT |
344 | if (sym_has_value(sym) && !sym_is_choice_value(sym)) { |
345 | if (sym->visible == no) | |
669bfad9 | 346 | sym->flags &= ~SYMBOL_DEF_USER; |
1da177e4 LT |
347 | switch (sym->type) { |
348 | case S_STRING: | |
349 | case S_INT: | |
350 | case S_HEX: | |
669bfad9 RZ |
351 | if (!sym_string_within_range(sym, sym->def[S_DEF_USER].val)) |
352 | sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER); | |
1da177e4 LT |
353 | default: |
354 | break; | |
355 | } | |
356 | } | |
357 | if (!sym_is_choice(sym)) | |
358 | continue; | |
359 | prop = sym_get_choice_prop(sym); | |
669bfad9 | 360 | flags = sym->flags; |
1da177e4 LT |
361 | for (e = prop->expr; e; e = e->left.expr) |
362 | if (e->right.sym->visible != no) | |
669bfad9 | 363 | flags &= e->right.sym->flags; |
002d27b1 | 364 | sym->flags &= flags | ~SYMBOL_DEF_USER; |
1da177e4 LT |
365 | } |
366 | ||
ddc97cac | 367 | sym_change_count += conf_warnings || conf_unsaved; |
1da177e4 LT |
368 | |
369 | return 0; | |
370 | } | |
371 | ||
372 | int conf_write(const char *name) | |
373 | { | |
c955ccaf | 374 | FILE *out; |
1da177e4 LT |
375 | struct symbol *sym; |
376 | struct menu *menu; | |
377 | const char *basename; | |
378 | char dirname[128], tmpname[128], newname[128]; | |
379 | int type, l; | |
380 | const char *str; | |
381 | time_t now; | |
382 | int use_timestamp = 1; | |
383 | char *env; | |
384 | ||
385 | dirname[0] = 0; | |
386 | if (name && name[0]) { | |
387 | struct stat st; | |
388 | char *slash; | |
389 | ||
390 | if (!stat(name, &st) && S_ISDIR(st.st_mode)) { | |
391 | strcpy(dirname, name); | |
392 | strcat(dirname, "/"); | |
14cdd3c4 | 393 | basename = conf_get_configname(); |
1da177e4 LT |
394 | } else if ((slash = strrchr(name, '/'))) { |
395 | int size = slash - name + 1; | |
396 | memcpy(dirname, name, size); | |
397 | dirname[size] = 0; | |
398 | if (slash[1]) | |
399 | basename = slash + 1; | |
400 | else | |
14cdd3c4 | 401 | basename = conf_get_configname(); |
1da177e4 LT |
402 | } else |
403 | basename = name; | |
404 | } else | |
14cdd3c4 | 405 | basename = conf_get_configname(); |
1da177e4 | 406 | |
14cdd3c4 RZ |
407 | sprintf(newname, "%s%s", dirname, basename); |
408 | env = getenv("KCONFIG_OVERWRITECONFIG"); | |
409 | if (!env || !*env) { | |
410 | sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid()); | |
411 | out = fopen(tmpname, "w"); | |
412 | } else { | |
413 | *tmpname = 0; | |
414 | out = fopen(newname, "w"); | |
415 | } | |
1da177e4 LT |
416 | if (!out) |
417 | return 1; | |
14cdd3c4 | 418 | |
2244cbd8 | 419 | sym = sym_lookup("KERNELVERSION", 0); |
1da177e4 LT |
420 | sym_calc_value(sym); |
421 | time(&now); | |
422 | env = getenv("KCONFIG_NOTIMESTAMP"); | |
423 | if (env && *env) | |
424 | use_timestamp = 0; | |
425 | ||
3b9fa093 ACM |
426 | fprintf(out, _("#\n" |
427 | "# Automatically generated make config: don't edit\n" | |
428 | "# Linux kernel version: %s\n" | |
429 | "%s%s" | |
430 | "#\n"), | |
1da177e4 LT |
431 | sym_get_string_value(sym), |
432 | use_timestamp ? "# " : "", | |
433 | use_timestamp ? ctime(&now) : ""); | |
1da177e4 LT |
434 | |
435 | if (!sym_change_count) | |
436 | sym_clear_all_valid(); | |
437 | ||
438 | menu = rootmenu.list; | |
439 | while (menu) { | |
440 | sym = menu->sym; | |
441 | if (!sym) { | |
442 | if (!menu_is_visible(menu)) | |
443 | goto next; | |
444 | str = menu_get_prompt(menu); | |
445 | fprintf(out, "\n" | |
446 | "#\n" | |
447 | "# %s\n" | |
448 | "#\n", str); | |
1da177e4 LT |
449 | } else if (!(sym->flags & SYMBOL_CHOICE)) { |
450 | sym_calc_value(sym); | |
451 | if (!(sym->flags & SYMBOL_WRITE)) | |
452 | goto next; | |
453 | sym->flags &= ~SYMBOL_WRITE; | |
454 | type = sym->type; | |
455 | if (type == S_TRISTATE) { | |
456 | sym_calc_value(modules_sym); | |
457 | if (modules_sym->curr.tri == no) | |
458 | type = S_BOOLEAN; | |
459 | } | |
460 | switch (type) { | |
461 | case S_BOOLEAN: | |
462 | case S_TRISTATE: | |
463 | switch (sym_get_tristate_value(sym)) { | |
464 | case no: | |
465 | fprintf(out, "# CONFIG_%s is not set\n", sym->name); | |
1da177e4 LT |
466 | break; |
467 | case mod: | |
468 | fprintf(out, "CONFIG_%s=m\n", sym->name); | |
1da177e4 LT |
469 | break; |
470 | case yes: | |
471 | fprintf(out, "CONFIG_%s=y\n", sym->name); | |
1da177e4 LT |
472 | break; |
473 | } | |
474 | break; | |
475 | case S_STRING: | |
1da177e4 LT |
476 | str = sym_get_string_value(sym); |
477 | fprintf(out, "CONFIG_%s=\"", sym->name); | |
c955ccaf | 478 | while (1) { |
1da177e4 LT |
479 | l = strcspn(str, "\"\\"); |
480 | if (l) { | |
481 | fwrite(str, l, 1, out); | |
c955ccaf | 482 | str += l; |
1da177e4 | 483 | } |
c955ccaf RZ |
484 | if (!*str) |
485 | break; | |
486 | fprintf(out, "\\%c", *str++); | |
487 | } | |
1da177e4 | 488 | fputs("\"\n", out); |
1da177e4 LT |
489 | break; |
490 | case S_HEX: | |
491 | str = sym_get_string_value(sym); | |
492 | if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) { | |
493 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str); | |
1da177e4 LT |
494 | break; |
495 | } | |
496 | case S_INT: | |
497 | str = sym_get_string_value(sym); | |
498 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str); | |
1da177e4 LT |
499 | break; |
500 | } | |
501 | } | |
502 | ||
503 | next: | |
504 | if (menu->list) { | |
505 | menu = menu->list; | |
506 | continue; | |
507 | } | |
508 | if (menu->next) | |
509 | menu = menu->next; | |
510 | else while ((menu = menu->parent)) { | |
511 | if (menu->next) { | |
512 | menu = menu->next; | |
513 | break; | |
514 | } | |
515 | } | |
516 | } | |
517 | fclose(out); | |
14cdd3c4 RZ |
518 | |
519 | if (*tmpname) { | |
9a3d0fe8 | 520 | strcat(dirname, basename); |
14cdd3c4 RZ |
521 | strcat(dirname, ".old"); |
522 | rename(newname, dirname); | |
523 | if (rename(tmpname, newname)) | |
524 | return 1; | |
1da177e4 | 525 | } |
1da177e4 | 526 | |
ddc97cac RZ |
527 | printf(_("#\n" |
528 | "# configuration written to %s\n" | |
14cdd3c4 | 529 | "#\n"), newname); |
ddc97cac | 530 | |
1da177e4 LT |
531 | sym_change_count = 0; |
532 | ||
533 | return 0; | |
534 | } | |
c955ccaf | 535 | |
2e3646e5 RZ |
536 | int conf_split_config(void) |
537 | { | |
538 | char *name, path[128]; | |
539 | char *s, *d, c; | |
540 | struct symbol *sym; | |
541 | struct stat sb; | |
542 | int res, i, fd; | |
543 | ||
544 | name = getenv("KCONFIG_AUTOCONFIG"); | |
545 | if (!name) | |
546 | name = "include/config/auto.conf"; | |
547 | conf_read_simple(name, S_DEF_AUTO); | |
548 | ||
549 | if (chdir("include/config")) | |
550 | return 1; | |
551 | ||
552 | res = 0; | |
553 | for_all_symbols(i, sym) { | |
554 | sym_calc_value(sym); | |
555 | if ((sym->flags & SYMBOL_AUTO) || !sym->name) | |
556 | continue; | |
557 | if (sym->flags & SYMBOL_WRITE) { | |
558 | if (sym->flags & SYMBOL_DEF_AUTO) { | |
559 | /* | |
560 | * symbol has old and new value, | |
561 | * so compare them... | |
562 | */ | |
563 | switch (sym->type) { | |
564 | case S_BOOLEAN: | |
565 | case S_TRISTATE: | |
566 | if (sym_get_tristate_value(sym) == | |
567 | sym->def[S_DEF_AUTO].tri) | |
568 | continue; | |
569 | break; | |
570 | case S_STRING: | |
571 | case S_HEX: | |
572 | case S_INT: | |
573 | if (!strcmp(sym_get_string_value(sym), | |
574 | sym->def[S_DEF_AUTO].val)) | |
575 | continue; | |
576 | break; | |
577 | default: | |
578 | break; | |
579 | } | |
580 | } else { | |
581 | /* | |
582 | * If there is no old value, only 'no' (unset) | |
583 | * is allowed as new value. | |
584 | */ | |
585 | switch (sym->type) { | |
586 | case S_BOOLEAN: | |
587 | case S_TRISTATE: | |
588 | if (sym_get_tristate_value(sym) == no) | |
589 | continue; | |
590 | break; | |
591 | default: | |
592 | break; | |
593 | } | |
594 | } | |
595 | } else if (!(sym->flags & SYMBOL_DEF_AUTO)) | |
596 | /* There is neither an old nor a new value. */ | |
597 | continue; | |
598 | /* else | |
599 | * There is an old value, but no new value ('no' (unset) | |
600 | * isn't saved in auto.conf, so the old value is always | |
601 | * different from 'no'). | |
602 | */ | |
603 | ||
604 | /* Replace all '_' and append ".h" */ | |
605 | s = sym->name; | |
606 | d = path; | |
607 | while ((c = *s++)) { | |
608 | c = tolower(c); | |
609 | *d++ = (c == '_') ? '/' : c; | |
610 | } | |
611 | strcpy(d, ".h"); | |
612 | ||
613 | /* Assume directory path already exists. */ | |
614 | fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); | |
615 | if (fd == -1) { | |
616 | if (errno != ENOENT) { | |
617 | res = 1; | |
618 | break; | |
619 | } | |
620 | /* | |
621 | * Create directory components, | |
622 | * unless they exist already. | |
623 | */ | |
624 | d = path; | |
625 | while ((d = strchr(d, '/'))) { | |
626 | *d = 0; | |
627 | if (stat(path, &sb) && mkdir(path, 0755)) { | |
628 | res = 1; | |
629 | goto out; | |
630 | } | |
631 | *d++ = '/'; | |
632 | } | |
633 | /* Try it again. */ | |
634 | fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644); | |
635 | if (fd == -1) { | |
636 | res = 1; | |
637 | break; | |
638 | } | |
639 | } | |
640 | close(fd); | |
641 | } | |
642 | out: | |
643 | if (chdir("../..")) | |
644 | return 1; | |
645 | ||
646 | return res; | |
647 | } | |
648 | ||
c955ccaf RZ |
649 | int conf_write_autoconf(void) |
650 | { | |
651 | struct symbol *sym; | |
652 | const char *str; | |
653 | char *name; | |
654 | FILE *out, *out_h; | |
655 | time_t now; | |
656 | int i, l; | |
657 | ||
2e3646e5 RZ |
658 | sym_clear_all_valid(); |
659 | ||
c955ccaf RZ |
660 | file_write_dep("include/config/auto.conf.cmd"); |
661 | ||
2e3646e5 RZ |
662 | if (conf_split_config()) |
663 | return 1; | |
664 | ||
c955ccaf RZ |
665 | out = fopen(".tmpconfig", "w"); |
666 | if (!out) | |
667 | return 1; | |
668 | ||
669 | out_h = fopen(".tmpconfig.h", "w"); | |
670 | if (!out_h) { | |
671 | fclose(out); | |
672 | return 1; | |
673 | } | |
674 | ||
675 | sym = sym_lookup("KERNELVERSION", 0); | |
676 | sym_calc_value(sym); | |
677 | time(&now); | |
678 | fprintf(out, "#\n" | |
679 | "# Automatically generated make config: don't edit\n" | |
680 | "# Linux kernel version: %s\n" | |
681 | "# %s" | |
682 | "#\n", | |
683 | sym_get_string_value(sym), ctime(&now)); | |
684 | fprintf(out_h, "/*\n" | |
685 | " * Automatically generated C config: don't edit\n" | |
686 | " * Linux kernel version: %s\n" | |
687 | " * %s" | |
688 | " */\n" | |
689 | "#define AUTOCONF_INCLUDED\n", | |
690 | sym_get_string_value(sym), ctime(&now)); | |
691 | ||
c955ccaf RZ |
692 | for_all_symbols(i, sym) { |
693 | sym_calc_value(sym); | |
694 | if (!(sym->flags & SYMBOL_WRITE) || !sym->name) | |
695 | continue; | |
696 | switch (sym->type) { | |
697 | case S_BOOLEAN: | |
698 | case S_TRISTATE: | |
699 | switch (sym_get_tristate_value(sym)) { | |
700 | case no: | |
701 | break; | |
702 | case mod: | |
703 | fprintf(out, "CONFIG_%s=m\n", sym->name); | |
704 | fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name); | |
705 | break; | |
706 | case yes: | |
707 | fprintf(out, "CONFIG_%s=y\n", sym->name); | |
708 | fprintf(out_h, "#define CONFIG_%s 1\n", sym->name); | |
709 | break; | |
710 | } | |
711 | break; | |
712 | case S_STRING: | |
713 | str = sym_get_string_value(sym); | |
714 | fprintf(out, "CONFIG_%s=\"", sym->name); | |
715 | fprintf(out_h, "#define CONFIG_%s \"", sym->name); | |
716 | while (1) { | |
717 | l = strcspn(str, "\"\\"); | |
718 | if (l) { | |
719 | fwrite(str, l, 1, out); | |
720 | fwrite(str, l, 1, out_h); | |
721 | str += l; | |
722 | } | |
723 | if (!*str) | |
724 | break; | |
725 | fprintf(out, "\\%c", *str); | |
726 | fprintf(out_h, "\\%c", *str); | |
727 | str++; | |
728 | } | |
729 | fputs("\"\n", out); | |
730 | fputs("\"\n", out_h); | |
731 | break; | |
732 | case S_HEX: | |
733 | str = sym_get_string_value(sym); | |
734 | if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) { | |
735 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str); | |
736 | fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str); | |
737 | break; | |
738 | } | |
739 | case S_INT: | |
740 | str = sym_get_string_value(sym); | |
741 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str); | |
742 | fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str); | |
743 | break; | |
744 | default: | |
745 | break; | |
746 | } | |
747 | } | |
748 | fclose(out); | |
749 | fclose(out_h); | |
750 | ||
751 | name = getenv("KCONFIG_AUTOHEADER"); | |
752 | if (!name) | |
753 | name = "include/linux/autoconf.h"; | |
754 | if (rename(".tmpconfig.h", name)) | |
755 | return 1; | |
756 | name = getenv("KCONFIG_AUTOCONFIG"); | |
757 | if (!name) | |
758 | name = "include/config/auto.conf"; | |
759 | /* | |
760 | * This must be the last step, kbuild has a dependency on auto.conf | |
761 | * and this marks the successful completion of the previous steps. | |
762 | */ | |
763 | if (rename(".tmpconfig", name)) | |
764 | return 1; | |
765 | ||
766 | return 0; | |
767 | } |