2 * Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
3 * Released under the terms of the GNU GPL v2.0.
16 #define LKC_DIRECT_LINK
19 static void conf_warning(const char *fmt
, ...)
20 __attribute__ ((format (printf
, 1, 2)));
22 static const char *conf_filename
;
23 static int conf_lineno
, conf_warnings
, conf_unsaved
;
25 const char conf_defname
[] = "arch/$ARCH/defconfig";
27 static void conf_warning(const char *fmt
, ...)
31 fprintf(stderr
, "%s:%d:warning: ", conf_filename
, conf_lineno
);
32 vfprintf(stderr
, fmt
, ap
);
33 fprintf(stderr
, "\n");
38 const char *conf_get_configname(void)
40 char *name
= getenv("KCONFIG_CONFIG");
42 return name
? name
: ".config";
45 const char *conf_get_autoconfig_name(void)
47 char *name
= getenv("KCONFIG_AUTOCONFIG");
49 return name
? name
: "include/config/auto.conf";
52 static char *conf_expand_value(const char *in
)
56 static char res_value
[SYMBOL_MAXLENGTH
];
57 char *dst
, name
[SYMBOL_MAXLENGTH
];
61 while ((src
= strchr(in
, '$'))) {
62 strncat(res_value
, in
, src
- in
);
65 while (isalnum(*src
) || *src
== '_')
68 sym
= sym_lookup(name
, 0);
70 strcat(res_value
, sym_get_string_value(sym
));
73 strcat(res_value
, in
);
78 char *conf_get_default_confname(void)
81 static char fullname
[PATH_MAX
+1];
84 name
= conf_expand_value(conf_defname
);
85 env
= getenv(SRCTREE
);
87 sprintf(fullname
, "%s/%s", env
, name
);
88 if (!stat(fullname
, &buf
))
94 static int conf_set_sym_val(struct symbol
*sym
, int def
, int def_flags
, char *p
)
101 sym
->def
[def
].tri
= mod
;
102 sym
->flags
|= def_flags
;
107 sym
->def
[def
].tri
= yes
;
108 sym
->flags
|= def_flags
;
112 sym
->def
[def
].tri
= no
;
113 sym
->flags
|= def_flags
;
116 conf_warning("symbol value '%s' invalid for %s", p
, sym
->name
);
120 for (p2
= p
; *p2
&& !isspace(*p2
); p2
++)
122 sym
->type
= S_STRING
;
128 for (p2
= p
; (p2
= strpbrk(p2
, "\"\\")); p2
++) {
133 memmove(p2
, p2
+ 1, strlen(p2
));
136 conf_warning("invalid string found");
142 if (sym_string_valid(sym
, p
)) {
143 sym
->def
[def
].val
= strdup(p
);
144 sym
->flags
|= def_flags
;
146 conf_warning("symbol value '%s' invalid for %s", p
, sym
->name
);
156 int conf_read_simple(const char *name
, int def
)
165 in
= zconf_fopen(name
);
167 struct property
*prop
;
169 name
= conf_get_configname();
170 in
= zconf_fopen(name
);
173 sym_add_change_count(1);
174 if (!sym_defconfig_list
) {
176 sym_calc_value(modules_sym
);
180 for_all_defaults(sym_defconfig_list
, prop
) {
181 if (expr_calc_value(prop
->visible
.expr
) == no
||
182 prop
->expr
->type
!= E_SYMBOL
)
184 name
= conf_expand_value(prop
->expr
->left
.sym
->name
);
185 in
= zconf_fopen(name
);
188 "# using defaults found in %s\n"
198 conf_filename
= name
;
203 def_flags
= SYMBOL_DEF
<< def
;
204 for_all_symbols(i
, sym
) {
205 sym
->flags
|= SYMBOL_CHANGED
;
206 sym
->flags
&= ~(def_flags
|SYMBOL_VALID
);
207 if (sym_is_choice(sym
))
208 sym
->flags
|= def_flags
;
213 if (sym
->def
[def
].val
)
214 free(sym
->def
[def
].val
);
216 sym
->def
[def
].val
= NULL
;
217 sym
->def
[def
].tri
= no
;
221 while (fgets(line
, sizeof(line
), in
)) {
224 if (line
[0] == '#') {
225 if (memcmp(line
+ 2, CONFIG_
, strlen(CONFIG_
)))
227 p
= strchr(line
+ 2 + strlen(CONFIG_
), ' ');
231 if (strncmp(p
, "is not set", 10))
233 if (def
== S_DEF_USER
) {
234 sym
= sym_find(line
+ 2 + strlen(CONFIG_
));
236 sym_add_change_count(1);
240 sym
= sym_lookup(line
+ 2 + strlen(CONFIG_
), 0);
241 if (sym
->type
== S_UNKNOWN
)
242 sym
->type
= S_BOOLEAN
;
244 if (sym
->flags
& def_flags
) {
245 conf_warning("override: reassigning to symbol %s", sym
->name
);
250 sym
->def
[def
].tri
= no
;
251 sym
->flags
|= def_flags
;
256 } else if (memcmp(line
, CONFIG_
, strlen(CONFIG_
)) == 0) {
257 p
= strchr(line
+ strlen(CONFIG_
), '=');
261 p2
= strchr(p
, '\n');
267 if (def
== S_DEF_USER
) {
268 sym
= sym_find(line
+ strlen(CONFIG_
));
270 sym_add_change_count(1);
274 sym
= sym_lookup(line
+ strlen(CONFIG_
), 0);
275 if (sym
->type
== S_UNKNOWN
)
278 if (sym
->flags
& def_flags
) {
279 conf_warning("override: reassigning to symbol %s", sym
->name
);
281 if (conf_set_sym_val(sym
, def
, def_flags
, p
))
284 if (line
[0] != '\r' && line
[0] != '\n')
285 conf_warning("unexpected data");
289 if (sym
&& sym_is_choice_value(sym
)) {
290 struct symbol
*cs
= prop_get_symbol(sym_get_choice_prop(sym
));
291 switch (sym
->def
[def
].tri
) {
295 if (cs
->def
[def
].tri
== yes
) {
296 conf_warning("%s creates inconsistent choice state", sym
->name
);
297 cs
->flags
&= ~def_flags
;
301 if (cs
->def
[def
].tri
!= no
)
302 conf_warning("override: %s changes choice state", sym
->name
);
303 cs
->def
[def
].val
= sym
;
306 cs
->def
[def
].tri
= EXPR_OR(cs
->def
[def
].tri
, sym
->def
[def
].tri
);
312 sym_calc_value(modules_sym
);
316 int conf_read(const char *name
)
318 struct symbol
*sym
, *choice_sym
;
319 struct property
*prop
;
323 sym_set_change_count(0);
325 if (conf_read_simple(name
, S_DEF_USER
))
328 for_all_symbols(i
, sym
) {
330 if (sym_is_choice(sym
) || (sym
->flags
& SYMBOL_AUTO
))
332 if (sym_has_value(sym
) && (sym
->flags
& SYMBOL_WRITE
)) {
333 /* check that calculated value agrees with saved value */
337 if (sym
->def
[S_DEF_USER
].tri
!= sym_get_tristate_value(sym
))
339 if (!sym_is_choice(sym
))
342 if (!strcmp(sym
->curr
.val
, sym
->def
[S_DEF_USER
].val
))
346 } else if (!sym_has_value(sym
) && !(sym
->flags
& SYMBOL_WRITE
))
347 /* no previous value and not saved */
350 /* maybe print value in verbose mode... */
352 if (!sym_is_choice(sym
))
354 /* The choice symbol only has a set value (and thus is not new)
355 * if all its visible childs have values.
357 prop
= sym_get_choice_prop(sym
);
359 expr_list_for_each_sym(prop
->expr
, e
, choice_sym
)
360 if (choice_sym
->visible
!= no
)
361 flags
&= choice_sym
->flags
;
362 sym
->flags
&= flags
| ~SYMBOL_DEF_USER
;
365 for_all_symbols(i
, sym
) {
366 if (sym_has_value(sym
) && !sym_is_choice_value(sym
)) {
367 /* Reset values of generates values, so they'll appear
368 * as new, if they should become visible, but that
369 * doesn't quite work if the Kconfig and the saved
370 * configuration disagree.
372 if (sym
->visible
== no
&& !conf_unsaved
)
373 sym
->flags
&= ~SYMBOL_DEF_USER
;
378 /* Reset a string value if it's out of range */
379 if (sym_string_within_range(sym
, sym
->def
[S_DEF_USER
].val
))
381 sym
->flags
&= ~(SYMBOL_VALID
|SYMBOL_DEF_USER
);
390 sym_add_change_count(conf_warnings
|| conf_unsaved
);
395 /* Write a S_STRING */
396 static void conf_write_string(bool headerfile
, const char *name
,
397 const char *str
, FILE *out
)
401 fprintf(out
, "#define %s%s \"", CONFIG_
, name
);
403 fprintf(out
, "%s%s=\"", CONFIG_
, name
);
406 l
= strcspn(str
, "\"\\");
408 xfwrite(str
, l
, 1, out
);
413 fprintf(out
, "\\%c", *str
++);
418 static void conf_write_symbol(struct symbol
*sym
, enum symbol_type type
,
419 FILE *out
, bool write_no
)
426 switch (sym_get_tristate_value(sym
)) {
429 fprintf(out
, "# %s%s is not set\n",
433 fprintf(out
, "%s%s=m\n", CONFIG_
, sym
->name
);
436 fprintf(out
, "%s%s=y\n", CONFIG_
, sym
->name
);
441 conf_write_string(false, sym
->name
, sym_get_string_value(sym
), out
);
445 str
= sym_get_string_value(sym
);
446 fprintf(out
, "%s%s=%s\n", CONFIG_
, sym
->name
, str
);
455 * Write out a minimal config.
456 * All values that has default values are skipped as this is redundant.
458 int conf_write_defconfig(const char *filename
)
464 out
= fopen(filename
, "w");
468 sym_clear_all_valid();
470 /* Traverse all menus to find all relevant symbols */
471 menu
= rootmenu
.list
;
477 if (!menu_is_visible(menu
))
479 } else if (!sym_is_choice(sym
)) {
481 if (!(sym
->flags
& SYMBOL_WRITE
))
483 sym
->flags
&= ~SYMBOL_WRITE
;
484 /* If we cannot change the symbol - skip */
485 if (!sym_is_changable(sym
))
487 /* If symbol equals to default value - skip */
488 if (strcmp(sym_get_string_value(sym
), sym_get_string_default(sym
)) == 0)
492 * If symbol is a choice value and equals to the
493 * default for a choice - skip.
494 * But only if value is bool and equal to "y" and
495 * choice is not "optional".
496 * (If choice is "optional" then all values can be "n")
498 if (sym_is_choice_value(sym
)) {
502 cs
= prop_get_symbol(sym_get_choice_prop(sym
));
503 ds
= sym_choice_default(cs
);
504 if (!sym_is_optional(cs
) && sym
== ds
) {
505 if ((sym
->type
== S_BOOLEAN
) &&
506 sym_get_tristate_value(sym
) == yes
)
510 conf_write_symbol(sym
, sym
->type
, out
, true);
513 if (menu
->list
!= NULL
) {
516 else if (menu
->next
!= NULL
) {
519 while ((menu
= menu
->parent
)) {
520 if (menu
->next
!= NULL
) {
531 int conf_write(const char *name
)
536 const char *basename
;
538 char dirname
[PATH_MAX
+1], tmpname
[PATH_MAX
+1], newname
[PATH_MAX
+1];
539 enum symbol_type type
;
541 int use_timestamp
= 1;
545 if (name
&& name
[0]) {
549 if (!stat(name
, &st
) && S_ISDIR(st
.st_mode
)) {
550 strcpy(dirname
, name
);
551 strcat(dirname
, "/");
552 basename
= conf_get_configname();
553 } else if ((slash
= strrchr(name
, '/'))) {
554 int size
= slash
- name
+ 1;
555 memcpy(dirname
, name
, size
);
558 basename
= slash
+ 1;
560 basename
= conf_get_configname();
564 basename
= conf_get_configname();
566 sprintf(newname
, "%s%s", dirname
, basename
);
567 env
= getenv("KCONFIG_OVERWRITECONFIG");
569 sprintf(tmpname
, "%s.tmpconfig.%d", dirname
, (int)getpid());
570 out
= fopen(tmpname
, "w");
573 out
= fopen(newname
, "w");
579 env
= getenv("KCONFIG_NOTIMESTAMP");
584 "# Automatically generated make config: don't edit\n"
588 rootmenu
.prompt
->text
,
589 use_timestamp
? "# " : "",
590 use_timestamp
? ctime(&now
) : "");
592 if (!conf_get_changed())
593 sym_clear_all_valid();
595 menu
= rootmenu
.list
;
599 if (!menu_is_visible(menu
))
601 str
= menu_get_prompt(menu
);
606 } else if (!(sym
->flags
& SYMBOL_CHOICE
)) {
608 if (!(sym
->flags
& SYMBOL_WRITE
))
610 sym
->flags
&= ~SYMBOL_WRITE
;
612 if (type
== S_TRISTATE
) {
613 sym_calc_value(modules_sym
);
614 if (modules_sym
->curr
.tri
== no
)
617 /* Write config symbol to file */
618 conf_write_symbol(sym
, type
, out
, true);
628 else while ((menu
= menu
->parent
)) {
638 strcat(dirname
, basename
);
639 strcat(dirname
, ".old");
640 rename(newname
, dirname
);
641 if (rename(tmpname
, newname
))
646 "# configuration written to %s\n"
649 sym_set_change_count(0);
654 static int conf_split_config(void)
657 char path
[PATH_MAX
+1];
663 name
= conf_get_autoconfig_name();
664 conf_read_simple(name
, S_DEF_AUTO
);
666 if (chdir("include/config"))
670 for_all_symbols(i
, sym
) {
672 if ((sym
->flags
& SYMBOL_AUTO
) || !sym
->name
)
674 if (sym
->flags
& SYMBOL_WRITE
) {
675 if (sym
->flags
& SYMBOL_DEF_AUTO
) {
677 * symbol has old and new value,
683 if (sym_get_tristate_value(sym
) ==
684 sym
->def
[S_DEF_AUTO
].tri
)
690 if (!strcmp(sym_get_string_value(sym
),
691 sym
->def
[S_DEF_AUTO
].val
))
699 * If there is no old value, only 'no' (unset)
700 * is allowed as new value.
705 if (sym_get_tristate_value(sym
) == no
)
712 } else if (!(sym
->flags
& SYMBOL_DEF_AUTO
))
713 /* There is neither an old nor a new value. */
716 * There is an old value, but no new value ('no' (unset)
717 * isn't saved in auto.conf, so the old value is always
718 * different from 'no').
721 /* Replace all '_' and append ".h" */
726 *d
++ = (c
== '_') ? '/' : c
;
730 /* Assume directory path already exists. */
731 fd
= open(path
, O_WRONLY
| O_CREAT
| O_TRUNC
, 0644);
733 if (errno
!= ENOENT
) {
738 * Create directory components,
739 * unless they exist already.
742 while ((d
= strchr(d
, '/'))) {
744 if (stat(path
, &sb
) && mkdir(path
, 0755)) {
751 fd
= open(path
, O_WRONLY
| O_CREAT
| O_TRUNC
, 0644);
766 int conf_write_autoconf(void)
771 FILE *out
, *tristate
, *out_h
;
775 sym_clear_all_valid();
777 file_write_dep("include/config/auto.conf.cmd");
779 if (conf_split_config())
782 out
= fopen(".tmpconfig", "w");
786 tristate
= fopen(".tmpconfig_tristate", "w");
792 out_h
= fopen(".tmpconfig.h", "w");
801 "# Automatically generated make config: don't edit\n"
805 rootmenu
.prompt
->text
, ctime(&now
));
806 fprintf(tristate
, "#\n"
807 "# Automatically generated - do not edit\n"
809 fprintf(out_h
, "/*\n"
810 " * Automatically generated C config: don't edit\n"
814 "#define AUTOCONF_INCLUDED\n",
815 rootmenu
.prompt
->text
, ctime(&now
));
817 for_all_symbols(i
, sym
) {
819 if (!(sym
->flags
& SYMBOL_WRITE
) || !sym
->name
)
822 /* write symbol to config file */
823 conf_write_symbol(sym
, sym
->type
, out
, false);
825 /* update autoconf and tristate files */
829 switch (sym_get_tristate_value(sym
)) {
833 fprintf(tristate
, "%s%s=M\n",
835 fprintf(out_h
, "#define %s%s_MODULE 1\n",
839 if (sym
->type
== S_TRISTATE
)
840 fprintf(tristate
,"%s%s=Y\n",
842 fprintf(out_h
, "#define %s%s 1\n",
848 conf_write_string(true, sym
->name
, sym_get_string_value(sym
), out_h
);
851 str
= sym_get_string_value(sym
);
852 if (str
[0] != '0' || (str
[1] != 'x' && str
[1] != 'X')) {
853 fprintf(out_h
, "#define %s%s 0x%s\n",
854 CONFIG_
, sym
->name
, str
);
858 str
= sym_get_string_value(sym
);
859 fprintf(out_h
, "#define %s%s %s\n",
860 CONFIG_
, sym
->name
, str
);
870 name
= getenv("KCONFIG_AUTOHEADER");
872 name
= "include/generated/autoconf.h";
873 if (rename(".tmpconfig.h", name
))
875 name
= getenv("KCONFIG_TRISTATE");
877 name
= "include/config/tristate.conf";
878 if (rename(".tmpconfig_tristate", name
))
880 name
= conf_get_autoconfig_name();
882 * This must be the last step, kbuild has a dependency on auto.conf
883 * and this marks the successful completion of the previous steps.
885 if (rename(".tmpconfig", name
))
891 static int sym_change_count
;
892 static void (*conf_changed_callback
)(void);
894 void sym_set_change_count(int count
)
896 int _sym_change_count
= sym_change_count
;
897 sym_change_count
= count
;
898 if (conf_changed_callback
&&
899 (bool)_sym_change_count
!= (bool)count
)
900 conf_changed_callback();
903 void sym_add_change_count(int count
)
905 sym_set_change_count(count
+ sym_change_count
);
908 bool conf_get_changed(void)
910 return sym_change_count
;
913 void conf_set_changed_callback(void (*fn
)(void))
915 conf_changed_callback
= fn
;
918 static void randomize_choice_values(struct symbol
*csym
)
920 struct property
*prop
;
926 * If choice is mod then we may have more items slected
927 * and if no then no-one.
928 * In both cases stop.
930 if (csym
->curr
.tri
!= yes
)
933 prop
= sym_get_choice_prop(csym
);
935 /* count entries in choice block */
937 expr_list_for_each_sym(prop
->expr
, e
, sym
)
941 * find a random value and set it to yes,
942 * set the rest to no so we have only one set
944 def
= (rand() % cnt
);
947 expr_list_for_each_sym(prop
->expr
, e
, sym
) {
949 sym
->def
[S_DEF_USER
].tri
= yes
;
950 csym
->def
[S_DEF_USER
].val
= sym
;
953 sym
->def
[S_DEF_USER
].tri
= no
;
956 csym
->flags
|= SYMBOL_DEF_USER
;
957 /* clear VALID to get value calculated */
958 csym
->flags
&= ~(SYMBOL_VALID
);
961 static void set_all_choice_values(struct symbol
*csym
)
963 struct property
*prop
;
967 prop
= sym_get_choice_prop(csym
);
970 * Set all non-assinged choice values to no
972 expr_list_for_each_sym(prop
->expr
, e
, sym
) {
973 if (!sym_has_value(sym
))
974 sym
->def
[S_DEF_USER
].tri
= no
;
976 csym
->flags
|= SYMBOL_DEF_USER
;
977 /* clear VALID to get value calculated */
978 csym
->flags
&= ~(SYMBOL_VALID
);
981 void conf_set_all_new_symbols(enum conf_def_mode mode
)
983 struct symbol
*sym
, *csym
;
986 for_all_symbols(i
, sym
) {
987 if (sym_has_value(sym
))
989 switch (sym_get_type(sym
)) {
994 sym
->def
[S_DEF_USER
].tri
= yes
;
997 sym
->def
[S_DEF_USER
].tri
= mod
;
1000 sym
->def
[S_DEF_USER
].tri
= no
;
1003 cnt
= sym_get_type(sym
) == S_TRISTATE
? 3 : 2;
1004 sym
->def
[S_DEF_USER
].tri
= (tristate
)(rand() % cnt
);
1009 if (!(sym_is_choice(sym
) && mode
== def_random
))
1010 sym
->flags
|= SYMBOL_DEF_USER
;
1018 sym_clear_all_valid();
1021 * We have different type of choice blocks.
1022 * If curr.tri equal to mod then we can select several
1023 * choice symbols in one block.
1024 * In this case we do nothing.
1025 * If curr.tri equal yes then only one symbol can be
1026 * selected in a choice block and we set it to yes,
1027 * and the rest to no.
1029 for_all_symbols(i
, csym
) {
1030 if (sym_has_value(csym
) || !sym_is_choice(csym
))
1033 sym_calc_value(csym
);
1034 if (mode
== def_random
)
1035 randomize_choice_values(csym
);
1037 set_all_choice_values(csym
);