Contents of /alx-src/tags/kernel26-2.6.12-alx-r9/scripts/kconfig/confdata.c
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Wed Mar 4 11:03:09 2009 UTC (15 years, 3 months ago) by niro
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File size: 9874 byte(s)
Wed Mar 4 11:03:09 2009 UTC (15 years, 3 months ago) by niro
File MIME type: text/plain
File size: 9874 byte(s)
Tag kernel26-2.6.12-alx-r9
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) { |
91 | printf(_("#\n" |
92 | "# using defaults found in %s\n" |
93 | "#\n"), name); |
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 | |
315 | fprintf(out, _("#\n" |
316 | "# Automatically generated make config: don't edit\n" |
317 | "# Linux kernel version: %s\n" |
318 | "%s%s" |
319 | "#\n"), |
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 | } |