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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> | |
8 | #include <stdio.h> | |
9 | #include <stdlib.h> | |
10 | #include <string.h> | |
11 | #include <time.h> | |
12 | #include <unistd.h> | |
13 | ||
14 | #define LKC_DIRECT_LINK | |
15 | #include "lkc.h" | |
16 | ||
17 | const char conf_def_filename[] = ".config"; | |
18 | ||
19 | const char conf_defname[] = "arch/$ARCH/defconfig"; | |
20 | ||
21 | const char *conf_confnames[] = { | |
22 | ".config", | |
23 | "/lib/modules/$UNAME_RELEASE/.config", | |
24 | "/etc/kernel-config", | |
25 | "/boot/config-$UNAME_RELEASE", | |
26 | conf_defname, | |
27 | NULL, | |
28 | }; | |
29 | ||
30 | static char *conf_expand_value(const signed char *in) | |
31 | { | |
32 | struct symbol *sym; | |
33 | const signed char *src; | |
34 | static char res_value[SYMBOL_MAXLENGTH]; | |
35 | char *dst, name[SYMBOL_MAXLENGTH]; | |
36 | ||
37 | res_value[0] = 0; | |
38 | dst = name; | |
39 | while ((src = strchr(in, '$'))) { | |
40 | strncat(res_value, in, src - in); | |
41 | src++; | |
42 | dst = name; | |
43 | while (isalnum(*src) || *src == '_') | |
44 | *dst++ = *src++; | |
45 | *dst = 0; | |
46 | sym = sym_lookup(name, 0); | |
47 | sym_calc_value(sym); | |
48 | strcat(res_value, sym_get_string_value(sym)); | |
49 | in = src; | |
50 | } | |
51 | strcat(res_value, in); | |
52 | ||
53 | return res_value; | |
54 | } | |
55 | ||
56 | char *conf_get_default_confname(void) | |
57 | { | |
58 | struct stat buf; | |
59 | static char fullname[PATH_MAX+1]; | |
60 | char *env, *name; | |
61 | ||
62 | name = conf_expand_value(conf_defname); | |
63 | env = getenv(SRCTREE); | |
64 | if (env) { | |
65 | sprintf(fullname, "%s/%s", env, name); | |
66 | if (!stat(fullname, &buf)) | |
67 | return fullname; | |
68 | } | |
69 | return name; | |
70 | } | |
71 | ||
72 | int conf_read(const char *name) | |
73 | { | |
74 | FILE *in = NULL; | |
75 | char line[1024]; | |
76 | char *p, *p2; | |
77 | int lineno = 0; | |
78 | struct symbol *sym; | |
79 | struct property *prop; | |
80 | struct expr *e; | |
81 | int i; | |
82 | ||
83 | if (name) { | |
84 | in = zconf_fopen(name); | |
85 | } else { | |
86 | const char **names = conf_confnames; | |
87 | while ((name = *names++)) { | |
88 | name = conf_expand_value(name); | |
89 | in = zconf_fopen(name); | |
90 | if (in) { | |
3b9fa093 ACM |
91 | printf(_("#\n" |
92 | "# using defaults found in %s\n" | |
93 | "#\n"), name); | |
1da177e4 LT |
94 | break; |
95 | } | |
96 | } | |
97 | } | |
98 | ||
99 | if (!in) | |
100 | return 1; | |
101 | ||
102 | for_all_symbols(i, sym) { | |
103 | sym->flags |= SYMBOL_NEW | SYMBOL_CHANGED; | |
104 | sym->flags &= ~SYMBOL_VALID; | |
105 | switch (sym->type) { | |
106 | case S_INT: | |
107 | case S_HEX: | |
108 | case S_STRING: | |
109 | if (sym->user.val) | |
110 | free(sym->user.val); | |
111 | default: | |
112 | sym->user.val = NULL; | |
113 | sym->user.tri = no; | |
114 | } | |
115 | } | |
116 | ||
117 | while (fgets(line, sizeof(line), in)) { | |
118 | lineno++; | |
119 | sym = NULL; | |
120 | switch (line[0]) { | |
121 | case '#': | |
122 | if (memcmp(line + 2, "CONFIG_", 7)) | |
123 | continue; | |
124 | p = strchr(line + 9, ' '); | |
125 | if (!p) | |
126 | continue; | |
127 | *p++ = 0; | |
128 | if (strncmp(p, "is not set", 10)) | |
129 | continue; | |
130 | sym = sym_find(line + 9); | |
131 | if (!sym) { | |
132 | fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 9); | |
133 | break; | |
134 | } | |
135 | switch (sym->type) { | |
136 | case S_BOOLEAN: | |
137 | case S_TRISTATE: | |
138 | sym->user.tri = no; | |
139 | sym->flags &= ~SYMBOL_NEW; | |
140 | break; | |
141 | default: | |
142 | ; | |
143 | } | |
144 | break; | |
145 | case 'C': | |
146 | if (memcmp(line, "CONFIG_", 7)) | |
147 | continue; | |
148 | p = strchr(line + 7, '='); | |
149 | if (!p) | |
150 | continue; | |
151 | *p++ = 0; | |
152 | p2 = strchr(p, '\n'); | |
153 | if (p2) | |
154 | *p2 = 0; | |
155 | sym = sym_find(line + 7); | |
156 | if (!sym) { | |
157 | fprintf(stderr, "%s:%d: trying to assign nonexistent symbol %s\n", name, lineno, line + 7); | |
158 | break; | |
159 | } | |
160 | switch (sym->type) { | |
161 | case S_TRISTATE: | |
162 | if (p[0] == 'm') { | |
163 | sym->user.tri = mod; | |
164 | sym->flags &= ~SYMBOL_NEW; | |
165 | break; | |
166 | } | |
167 | case S_BOOLEAN: | |
168 | if (p[0] == 'y') { | |
169 | sym->user.tri = yes; | |
170 | sym->flags &= ~SYMBOL_NEW; | |
171 | break; | |
172 | } | |
173 | if (p[0] == 'n') { | |
174 | sym->user.tri = no; | |
175 | sym->flags &= ~SYMBOL_NEW; | |
176 | break; | |
177 | } | |
178 | break; | |
179 | case S_STRING: | |
180 | if (*p++ != '"') | |
181 | break; | |
182 | for (p2 = p; (p2 = strpbrk(p2, "\"\\")); p2++) { | |
183 | if (*p2 == '"') { | |
184 | *p2 = 0; | |
185 | break; | |
186 | } | |
187 | memmove(p2, p2 + 1, strlen(p2)); | |
188 | } | |
189 | if (!p2) { | |
190 | fprintf(stderr, "%s:%d: invalid string found\n", name, lineno); | |
191 | exit(1); | |
192 | } | |
193 | case S_INT: | |
194 | case S_HEX: | |
195 | if (sym_string_valid(sym, p)) { | |
196 | sym->user.val = strdup(p); | |
197 | sym->flags &= ~SYMBOL_NEW; | |
198 | } else { | |
199 | fprintf(stderr, "%s:%d: symbol value '%s' invalid for %s\n", name, lineno, p, sym->name); | |
200 | exit(1); | |
201 | } | |
202 | break; | |
203 | default: | |
204 | ; | |
205 | } | |
206 | break; | |
207 | case '\n': | |
208 | break; | |
209 | default: | |
210 | continue; | |
211 | } | |
212 | if (sym && sym_is_choice_value(sym)) { | |
213 | struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym)); | |
214 | switch (sym->user.tri) { | |
215 | case no: | |
216 | break; | |
217 | case mod: | |
218 | if (cs->user.tri == yes) | |
219 | /* warn? */; | |
220 | break; | |
221 | case yes: | |
222 | if (cs->user.tri != no) | |
223 | /* warn? */; | |
224 | cs->user.val = sym; | |
225 | break; | |
226 | } | |
227 | cs->user.tri = E_OR(cs->user.tri, sym->user.tri); | |
228 | cs->flags &= ~SYMBOL_NEW; | |
229 | } | |
230 | } | |
231 | fclose(in); | |
232 | ||
233 | if (modules_sym) | |
234 | sym_calc_value(modules_sym); | |
235 | for_all_symbols(i, sym) { | |
236 | sym_calc_value(sym); | |
237 | if (sym_has_value(sym) && !sym_is_choice_value(sym)) { | |
238 | if (sym->visible == no) | |
239 | sym->flags |= SYMBOL_NEW; | |
240 | switch (sym->type) { | |
241 | case S_STRING: | |
242 | case S_INT: | |
243 | case S_HEX: | |
244 | if (!sym_string_within_range(sym, sym->user.val)) | |
245 | sym->flags |= SYMBOL_NEW; | |
246 | default: | |
247 | break; | |
248 | } | |
249 | } | |
250 | if (!sym_is_choice(sym)) | |
251 | continue; | |
252 | prop = sym_get_choice_prop(sym); | |
253 | for (e = prop->expr; e; e = e->left.expr) | |
254 | if (e->right.sym->visible != no) | |
255 | sym->flags |= e->right.sym->flags & SYMBOL_NEW; | |
256 | } | |
257 | ||
258 | sym_change_count = 1; | |
259 | ||
260 | return 0; | |
261 | } | |
262 | ||
263 | int conf_write(const char *name) | |
264 | { | |
265 | FILE *out, *out_h; | |
266 | struct symbol *sym; | |
267 | struct menu *menu; | |
268 | const char *basename; | |
269 | char dirname[128], tmpname[128], newname[128]; | |
270 | int type, l; | |
271 | const char *str; | |
272 | time_t now; | |
273 | int use_timestamp = 1; | |
274 | char *env; | |
275 | ||
276 | dirname[0] = 0; | |
277 | if (name && name[0]) { | |
278 | struct stat st; | |
279 | char *slash; | |
280 | ||
281 | if (!stat(name, &st) && S_ISDIR(st.st_mode)) { | |
282 | strcpy(dirname, name); | |
283 | strcat(dirname, "/"); | |
284 | basename = conf_def_filename; | |
285 | } else if ((slash = strrchr(name, '/'))) { | |
286 | int size = slash - name + 1; | |
287 | memcpy(dirname, name, size); | |
288 | dirname[size] = 0; | |
289 | if (slash[1]) | |
290 | basename = slash + 1; | |
291 | else | |
292 | basename = conf_def_filename; | |
293 | } else | |
294 | basename = name; | |
295 | } else | |
296 | basename = conf_def_filename; | |
297 | ||
298 | sprintf(newname, "%s.tmpconfig.%d", dirname, (int)getpid()); | |
299 | out = fopen(newname, "w"); | |
300 | if (!out) | |
301 | return 1; | |
302 | out_h = NULL; | |
303 | if (!name) { | |
304 | out_h = fopen(".tmpconfig.h", "w"); | |
305 | if (!out_h) | |
306 | return 1; | |
307 | } | |
308 | sym = sym_lookup("KERNELRELEASE", 0); | |
309 | sym_calc_value(sym); | |
310 | time(&now); | |
311 | env = getenv("KCONFIG_NOTIMESTAMP"); | |
312 | if (env && *env) | |
313 | use_timestamp = 0; | |
314 | ||
3b9fa093 ACM |
315 | fprintf(out, _("#\n" |
316 | "# Automatically generated make config: don't edit\n" | |
317 | "# Linux kernel version: %s\n" | |
318 | "%s%s" | |
319 | "#\n"), | |
1da177e4 LT |
320 | sym_get_string_value(sym), |
321 | use_timestamp ? "# " : "", | |
322 | use_timestamp ? ctime(&now) : ""); | |
323 | if (out_h) | |
324 | fprintf(out_h, "/*\n" | |
325 | " * Automatically generated C config: don't edit\n" | |
326 | " * Linux kernel version: %s\n" | |
327 | "%s%s" | |
328 | " */\n" | |
329 | "#define AUTOCONF_INCLUDED\n", | |
330 | sym_get_string_value(sym), | |
331 | use_timestamp ? " * " : "", | |
332 | use_timestamp ? ctime(&now) : ""); | |
333 | ||
334 | if (!sym_change_count) | |
335 | sym_clear_all_valid(); | |
336 | ||
337 | menu = rootmenu.list; | |
338 | while (menu) { | |
339 | sym = menu->sym; | |
340 | if (!sym) { | |
341 | if (!menu_is_visible(menu)) | |
342 | goto next; | |
343 | str = menu_get_prompt(menu); | |
344 | fprintf(out, "\n" | |
345 | "#\n" | |
346 | "# %s\n" | |
347 | "#\n", str); | |
348 | if (out_h) | |
349 | fprintf(out_h, "\n" | |
350 | "/*\n" | |
351 | " * %s\n" | |
352 | " */\n", str); | |
353 | } else if (!(sym->flags & SYMBOL_CHOICE)) { | |
354 | sym_calc_value(sym); | |
355 | if (!(sym->flags & SYMBOL_WRITE)) | |
356 | goto next; | |
357 | sym->flags &= ~SYMBOL_WRITE; | |
358 | type = sym->type; | |
359 | if (type == S_TRISTATE) { | |
360 | sym_calc_value(modules_sym); | |
361 | if (modules_sym->curr.tri == no) | |
362 | type = S_BOOLEAN; | |
363 | } | |
364 | switch (type) { | |
365 | case S_BOOLEAN: | |
366 | case S_TRISTATE: | |
367 | switch (sym_get_tristate_value(sym)) { | |
368 | case no: | |
369 | fprintf(out, "# CONFIG_%s is not set\n", sym->name); | |
370 | if (out_h) | |
371 | fprintf(out_h, "#undef CONFIG_%s\n", sym->name); | |
372 | break; | |
373 | case mod: | |
374 | fprintf(out, "CONFIG_%s=m\n", sym->name); | |
375 | if (out_h) | |
376 | fprintf(out_h, "#define CONFIG_%s_MODULE 1\n", sym->name); | |
377 | break; | |
378 | case yes: | |
379 | fprintf(out, "CONFIG_%s=y\n", sym->name); | |
380 | if (out_h) | |
381 | fprintf(out_h, "#define CONFIG_%s 1\n", sym->name); | |
382 | break; | |
383 | } | |
384 | break; | |
385 | case S_STRING: | |
386 | // fix me | |
387 | str = sym_get_string_value(sym); | |
388 | fprintf(out, "CONFIG_%s=\"", sym->name); | |
389 | if (out_h) | |
390 | fprintf(out_h, "#define CONFIG_%s \"", sym->name); | |
391 | do { | |
392 | l = strcspn(str, "\"\\"); | |
393 | if (l) { | |
394 | fwrite(str, l, 1, out); | |
395 | if (out_h) | |
396 | fwrite(str, l, 1, out_h); | |
397 | } | |
398 | str += l; | |
399 | while (*str == '\\' || *str == '"') { | |
400 | fprintf(out, "\\%c", *str); | |
401 | if (out_h) | |
402 | fprintf(out_h, "\\%c", *str); | |
403 | str++; | |
404 | } | |
405 | } while (*str); | |
406 | fputs("\"\n", out); | |
407 | if (out_h) | |
408 | fputs("\"\n", out_h); | |
409 | break; | |
410 | case S_HEX: | |
411 | str = sym_get_string_value(sym); | |
412 | if (str[0] != '0' || (str[1] != 'x' && str[1] != 'X')) { | |
413 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str); | |
414 | if (out_h) | |
415 | fprintf(out_h, "#define CONFIG_%s 0x%s\n", sym->name, str); | |
416 | break; | |
417 | } | |
418 | case S_INT: | |
419 | str = sym_get_string_value(sym); | |
420 | fprintf(out, "CONFIG_%s=%s\n", sym->name, str); | |
421 | if (out_h) | |
422 | fprintf(out_h, "#define CONFIG_%s %s\n", sym->name, str); | |
423 | break; | |
424 | } | |
425 | } | |
426 | ||
427 | next: | |
428 | if (menu->list) { | |
429 | menu = menu->list; | |
430 | continue; | |
431 | } | |
432 | if (menu->next) | |
433 | menu = menu->next; | |
434 | else while ((menu = menu->parent)) { | |
435 | if (menu->next) { | |
436 | menu = menu->next; | |
437 | break; | |
438 | } | |
439 | } | |
440 | } | |
441 | fclose(out); | |
442 | if (out_h) { | |
443 | fclose(out_h); | |
444 | rename(".tmpconfig.h", "include/linux/autoconf.h"); | |
445 | file_write_dep(NULL); | |
446 | } | |
447 | if (!name || basename != conf_def_filename) { | |
448 | if (!name) | |
449 | name = conf_def_filename; | |
450 | sprintf(tmpname, "%s.old", name); | |
451 | rename(name, tmpname); | |
452 | } | |
453 | sprintf(tmpname, "%s%s", dirname, basename); | |
454 | if (rename(newname, tmpname)) | |
455 | return 1; | |
456 | ||
457 | sym_change_count = 0; | |
458 | ||
459 | return 0; | |
460 | } |