2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
15 #define LKC_DIRECT_LINK
18 static void conf_warning(const char *fmt
, ...)
19 __attribute__ ((format (printf
, 1, 2)));
21 static const char *conf_filename
;
22 static int conf_lineno
, conf_warnings
, conf_unsaved
;
24 const char conf_defname
[] = "arch/$ARCH/defconfig";
26 static void conf_warning(const char *fmt
, ...)
30 fprintf(stderr
, "%s:%d:warning: ", conf_filename
, conf_lineno
);
31 vfprintf(stderr
, fmt
, ap
);
32 fprintf(stderr
, "\n");
37 const char *conf_get_configname(void)
39 char *name
= getenv("KCONFIG_CONFIG");
41 return name
? name
: ".config";
44 const char *conf_get_autoconfig_name(void)
46 char *name
= getenv("KCONFIG_AUTOCONFIG");
48 return name
? name
: "include/config/auto.conf";
51 static char *conf_expand_value(const char *in
)
55 static char res_value
[SYMBOL_MAXLENGTH
];
56 char *dst
, name
[SYMBOL_MAXLENGTH
];
60 while ((src
= strchr(in
, '$'))) {
61 strncat(res_value
, in
, src
- in
);
64 while (isalnum(*src
) || *src
== '_')
67 sym
= sym_lookup(name
, 0);
69 strcat(res_value
, sym_get_string_value(sym
));
72 strcat(res_value
, in
);
77 char *conf_get_default_confname(void)
80 static char fullname
[PATH_MAX
+1];
83 name
= conf_expand_value(conf_defname
);
84 env
= getenv(SRCTREE
);
86 sprintf(fullname
, "%s/%s", env
, name
);
87 if (!stat(fullname
, &buf
))
93 static int conf_set_sym_val(struct symbol
*sym
, int def
, int def_flags
, char *p
)
100 sym
->def
[def
].tri
= mod
;
101 sym
->flags
|= def_flags
;
106 sym
->def
[def
].tri
= yes
;
107 sym
->flags
|= def_flags
;
111 sym
->def
[def
].tri
= no
;
112 sym
->flags
|= def_flags
;
115 conf_warning("symbol value '%s' invalid for %s", p
, sym
->name
);
119 for (p2
= p
; *p2
&& !isspace(*p2
); p2
++)
121 sym
->type
= S_STRING
;
127 for (p2
= p
; (p2
= strpbrk(p2
, "\"\\")); p2
++) {
132 memmove(p2
, p2
+ 1, strlen(p2
));
135 conf_warning("invalid string found");
141 if (sym_string_valid(sym
, p
)) {
142 sym
->def
[def
].val
= strdup(p
);
143 sym
->flags
|= def_flags
;
145 conf_warning("symbol value '%s' invalid for %s", p
, sym
->name
);
155 int conf_read_simple(const char *name
, int def
)
164 in
= zconf_fopen(name
);
166 struct property
*prop
;
168 name
= conf_get_configname();
169 in
= zconf_fopen(name
);
172 sym_add_change_count(1);
173 if (!sym_defconfig_list
)
176 for_all_defaults(sym_defconfig_list
, prop
) {
177 if (expr_calc_value(prop
->visible
.expr
) == no
||
178 prop
->expr
->type
!= E_SYMBOL
)
180 name
= conf_expand_value(prop
->expr
->left
.sym
->name
);
181 in
= zconf_fopen(name
);
184 "# using defaults found in %s\n"
194 conf_filename
= name
;
199 def_flags
= SYMBOL_DEF
<< def
;
200 for_all_symbols(i
, sym
) {
201 sym
->flags
|= SYMBOL_CHANGED
;
202 sym
->flags
&= ~(def_flags
|SYMBOL_VALID
);
203 if (sym_is_choice(sym
))
204 sym
->flags
|= def_flags
;
209 if (sym
->def
[def
].val
)
210 free(sym
->def
[def
].val
);
212 sym
->def
[def
].val
= NULL
;
213 sym
->def
[def
].tri
= no
;
217 while (fgets(line
, sizeof(line
), in
)) {
222 p
= strchr(line
+ 2, ' ');
226 if (strncmp(p
, "is not set", 10))
228 if (def
== S_DEF_USER
) {
229 sym
= sym_find(line
+ 2);
231 sym_add_change_count(1);
235 sym
= sym_lookup(line
+ 2, 0);
236 if (sym
->type
== S_UNKNOWN
)
237 sym
->type
= S_BOOLEAN
;
239 if (sym
->flags
& def_flags
) {
240 conf_warning("override: reassigning to symbol %s", sym
->name
);
245 sym
->def
[def
].tri
= no
;
246 sym
->flags
|= def_flags
;
253 p
= strchr(line
, '=');
257 p2
= strchr(p
, '\n');
263 if (def
== S_DEF_USER
) {
264 sym
= sym_find(line
);
266 sym_add_change_count(1);
270 sym
= sym_lookup(line
, 0);
271 if (sym
->type
== S_UNKNOWN
)
274 if (sym
->flags
& def_flags
) {
275 conf_warning("override: reassigning to symbol %s", sym
->name
);
277 if (conf_set_sym_val(sym
, def
, def_flags
, p
))
284 if (sym
&& sym_is_choice_value(sym
)) {
285 struct symbol
*cs
= prop_get_symbol(sym_get_choice_prop(sym
));
286 switch (sym
->def
[def
].tri
) {
290 if (cs
->def
[def
].tri
== yes
) {
291 conf_warning("%s creates inconsistent choice state", sym
->name
);
292 cs
->flags
&= ~def_flags
;
296 if (cs
->def
[def
].tri
!= no
)
297 conf_warning("override: %s changes choice state", sym
->name
);
298 cs
->def
[def
].val
= sym
;
301 cs
->def
[def
].tri
= EXPR_OR(cs
->def
[def
].tri
, sym
->def
[def
].tri
);
307 sym_calc_value(modules_sym
);
311 int conf_read(const char *name
)
313 struct symbol
*sym
, *choice_sym
;
314 struct property
*prop
;
318 sym_set_change_count(0);
320 if (conf_read_simple(name
, S_DEF_USER
))
323 for_all_symbols(i
, sym
) {
325 if (sym_is_choice(sym
) || (sym
->flags
& SYMBOL_AUTO
))
327 if (sym_has_value(sym
) && (sym
->flags
& SYMBOL_WRITE
)) {
328 /* check that calculated value agrees with saved value */
332 if (sym
->def
[S_DEF_USER
].tri
!= sym_get_tristate_value(sym
))
334 if (!sym_is_choice(sym
))
337 if (!strcmp(sym
->curr
.val
, sym
->def
[S_DEF_USER
].val
))
341 } else if (!sym_has_value(sym
) && !(sym
->flags
& SYMBOL_WRITE
))
342 /* no previous value and not saved */
345 /* maybe print value in verbose mode... */
347 if (!sym_is_choice(sym
))
349 /* The choice symbol only has a set value (and thus is not new)
350 * if all its visible childs have values.
352 prop
= sym_get_choice_prop(sym
);
354 expr_list_for_each_sym(prop
->expr
, e
, choice_sym
)
355 if (choice_sym
->visible
!= no
)
356 flags
&= choice_sym
->flags
;
357 sym
->flags
&= flags
| ~SYMBOL_DEF_USER
;
360 for_all_symbols(i
, sym
) {
361 if (sym_has_value(sym
) && !sym_is_choice_value(sym
)) {
362 /* Reset values of generates values, so they'll appear
363 * as new, if they should become visible, but that
364 * doesn't quite work if the Kconfig and the saved
365 * configuration disagree.
367 if (sym
->visible
== no
&& !conf_unsaved
)
368 sym
->flags
&= ~SYMBOL_DEF_USER
;
373 /* Reset a string value if it's out of range */
374 if (sym_string_within_range(sym
, sym
->def
[S_DEF_USER
].val
))
376 sym
->flags
&= ~(SYMBOL_VALID
|SYMBOL_DEF_USER
);
385 sym_add_change_count(conf_warnings
|| conf_unsaved
);
390 int conf_write(const char *name
)
395 const char *basename
;
396 char dirname
[128], tmpname
[128], newname
[128];
400 int use_timestamp
= 1;
404 if (name
&& name
[0]) {
408 if (!stat(name
, &st
) && S_ISDIR(st
.st_mode
)) {
409 strcpy(dirname
, name
);
410 strcat(dirname
, "/");
411 basename
= conf_get_configname();
412 } else if ((slash
= strrchr(name
, '/'))) {
413 int size
= slash
- name
+ 1;
414 memcpy(dirname
, name
, size
);
417 basename
= slash
+ 1;
419 basename
= conf_get_configname();
423 basename
= conf_get_configname();
425 sprintf(newname
, "%s%s", dirname
, basename
);
426 env
= getenv("KCONFIG_OVERWRITECONFIG");
428 sprintf(tmpname
, "%s.tmpconfig.%d", dirname
, (int)getpid());
429 out
= fopen(tmpname
, "w");
432 out
= fopen(newname
, "w");
437 sym
= sym_lookup("ADKVERSION", 0);
440 env
= getenv("KCONFIG_NOTIMESTAMP");
445 "# Automatically generated make config: don't edit\n"
446 "# OpenADK version: %s\n"
449 sym_get_string_value(sym
),
450 use_timestamp
? "# " : "",
451 use_timestamp
? ctime(&now
) : "");
453 if (!conf_get_changed())
454 sym_clear_all_valid();
456 menu
= rootmenu
.list
;
460 if (!menu_is_visible(menu
))
462 str
= menu_get_prompt(menu
);
467 } else if (!(sym
->flags
& SYMBOL_CHOICE
)) {
469 if (!(sym
->flags
& SYMBOL_WRITE
))
471 sym
->flags
&= ~SYMBOL_WRITE
;
473 if (type
== S_TRISTATE
) {
474 sym_calc_value(modules_sym
);
475 if (modules_sym
->curr
.tri
== no
)
481 switch (sym_get_tristate_value(sym
)) {
483 fprintf(out
, "# %s is not set\n", sym
->name
);
486 fprintf(out
, "%s=m\n", sym
->name
);
489 fprintf(out
, "%s=y\n", sym
->name
);
494 str
= sym_get_string_value(sym
);
495 fprintf(out
, "%s=\"", sym
->name
);
497 l
= strcspn(str
, "\"\\");
499 fwrite(str
, l
, 1, out
);
504 fprintf(out
, "\\%c", *str
++);
509 str
= sym_get_string_value(sym
);
510 if (str
[0] != '0' || (str
[1] != 'x' && str
[1] != 'X')) {
511 fprintf(out
, "%s=%s\n", sym
->name
, str
);
515 str
= sym_get_string_value(sym
);
516 fprintf(out
, "%s=%s\n", sym
->name
, str
);
528 else while ((menu
= menu
->parent
)) {
538 strcat(dirname
, basename
);
539 strcat(dirname
, ".old");
540 rename(newname
, dirname
);
541 if (rename(tmpname
, newname
))
546 "# configuration written to %s\n"
549 sym_set_change_count(0);
554 int conf_split_config(void)
563 name
= conf_get_autoconfig_name();
564 conf_read_simple(name
, S_DEF_AUTO
);
566 if (chdir("include/config"))
570 for_all_symbols(i
, sym
) {
572 if ((sym
->flags
& SYMBOL_AUTO
) || !sym
->name
)
574 if (sym
->flags
& SYMBOL_WRITE
) {
575 if (sym
->flags
& SYMBOL_DEF_AUTO
) {
577 * symbol has old and new value,
583 if (sym_get_tristate_value(sym
) ==
584 sym
->def
[S_DEF_AUTO
].tri
)
590 if (!strcmp(sym_get_string_value(sym
),
591 sym
->def
[S_DEF_AUTO
].val
))
599 * If there is no old value, only 'no' (unset)
600 * is allowed as new value.
605 if (sym_get_tristate_value(sym
) == no
)
612 } else if (!(sym
->flags
& SYMBOL_DEF_AUTO
))
613 /* There is neither an old nor a new value. */
616 * There is an old value, but no new value ('no' (unset)
617 * isn't saved in auto.conf, so the old value is always
618 * different from 'no').
621 /* Replace all '_' and append ".h" */
626 *d
++ = (c
== '_') ? '/' : c
;
630 /* Assume directory path already exists. */
631 fd
= open(path
, O_WRONLY
| O_CREAT
| O_TRUNC
, 0644);
633 if (errno
!= ENOENT
) {
638 * Create directory components,
639 * unless they exist already.
642 while ((d
= strchr(d
, '/'))) {
644 if (stat(path
, &sb
) && mkdir(path
, 0755)) {
651 fd
= open(path
, O_WRONLY
| O_CREAT
| O_TRUNC
, 0644);
666 int conf_write_autoconf(void)
675 sym_clear_all_valid();
677 file_write_dep("include/config/auto.conf.cmd");
679 if (conf_split_config())
682 out
= fopen(".tmpconfig", "w");
686 out_h
= fopen(".tmpconfig.h", "w");
692 sym
= sym_lookup("ADKVERSION", 0);
696 "# Automatically generated make config: don't edit\n"
697 "# OpenADK version: %s\n"
700 sym_get_string_value(sym
), ctime(&now
));
701 fprintf(out_h
, "/*\n"
702 " * Automatically generated C config: don't edit\n"
703 " * OpenADK version: %s\n"
706 "#define AUTOCONF_INCLUDED\n",
707 sym_get_string_value(sym
), ctime(&now
));
709 for_all_symbols(i
, sym
) {
711 if (!(sym
->flags
& SYMBOL_WRITE
) || !sym
->name
)
716 switch (sym_get_tristate_value(sym
)) {
720 fprintf(out
, "%s=m\n", sym
->name
);
721 fprintf(out_h
, "#define %s_MODULE 1\n", sym
->name
);
724 fprintf(out
, "%s=y\n", sym
->name
);
725 fprintf(out_h
, "#define %s 1\n", sym
->name
);
730 str
= sym_get_string_value(sym
);
731 fprintf(out
, "%s=\"", sym
->name
);
732 fprintf(out_h
, "#define %s \"", sym
->name
);
734 l
= strcspn(str
, "\"\\");
736 fwrite(str
, l
, 1, out
);
737 fwrite(str
, l
, 1, out_h
);
742 fprintf(out
, "\\%c", *str
);
743 fprintf(out_h
, "\\%c", *str
);
747 fputs("\"\n", out_h
);
750 str
= sym_get_string_value(sym
);
751 if (str
[0] != '0' || (str
[1] != 'x' && str
[1] != 'X')) {
752 fprintf(out
, "%s=%s\n", sym
->name
, str
);
753 fprintf(out_h
, "#define %s 0x%s\n", sym
->name
, str
);
757 str
= sym_get_string_value(sym
);
758 fprintf(out
, "%s=%s\n", sym
->name
, str
);
759 fprintf(out_h
, "#define %s %s\n", sym
->name
, str
);
768 name
= getenv("KCONFIG_AUTOHEADER");
770 name
= "include/linux/autoconf.h";
771 if (rename(".tmpconfig.h", name
))
773 name
= conf_get_autoconfig_name();
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.
778 if (rename(".tmpconfig", name
))
784 static int sym_change_count
;
785 static void (*conf_changed_callback
)(void);
787 void sym_set_change_count(int count
)
789 int _sym_change_count
= sym_change_count
;
790 sym_change_count
= count
;
791 if (conf_changed_callback
&&
792 (bool)_sym_change_count
!= (bool)count
)
793 conf_changed_callback();
796 void sym_add_change_count(int count
)
798 sym_set_change_count(count
+ sym_change_count
);
801 bool conf_get_changed(void)
803 return sym_change_count
;
806 void conf_set_changed_callback(void (*fn
)(void))
808 conf_changed_callback
= fn
;
812 void conf_set_all_new_symbols(enum conf_def_mode mode
)
814 struct symbol
*sym
, *csym
;
815 struct property
*prop
;
819 for_all_symbols(i
, sym
) {
820 if (sym_has_value(sym
))
822 switch (sym_get_type(sym
)) {
827 sym
->def
[S_DEF_USER
].tri
= yes
;
830 sym
->def
[S_DEF_USER
].tri
= mod
;
833 sym
->def
[S_DEF_USER
].tri
= no
;
836 sym
->def
[S_DEF_USER
].tri
= (tristate
)(rand() % 3);
841 if (!(sym_is_choice(sym
) && mode
== def_random
))
842 sym
->flags
|= SYMBOL_DEF_USER
;
850 sym_clear_all_valid();
852 if (mode
!= def_random
)
855 * We have different type of choice blocks.
856 * If curr.tri equal to mod then we can select several
857 * choice symbols in one block.
858 * In this case we do nothing.
859 * If curr.tri equal yes then only one symbol can be
860 * selected in a choice block and we set it to yes,
861 * and the rest to no.
863 for_all_symbols(i
, csym
) {
864 if (sym_has_value(csym
) || !sym_is_choice(csym
))
867 sym_calc_value(csym
);
869 if (csym
->curr
.tri
!= yes
)
872 prop
= sym_get_choice_prop(csym
);
874 /* count entries in choice block */
876 expr_list_for_each_sym(prop
->expr
, e
, sym
)
880 * find a random value and set it to yes,
881 * set the rest to no so we have only one set
883 def
= (rand() % cnt
);
886 expr_list_for_each_sym(prop
->expr
, e
, sym
) {
888 sym
->def
[S_DEF_USER
].tri
= yes
;
889 csym
->def
[S_DEF_USER
].val
= sym
;
892 sym
->def
[S_DEF_USER
].tri
= no
;
895 csym
->flags
|= SYMBOL_DEF_USER
;
896 /* clear VALID to get value calculated */
897 csym
->flags
&= ~(SYMBOL_VALID
);