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 void conf_message(const char *fmt
, ...)
23 __attribute__ ((format (printf
, 1, 2)));
25 static const char *conf_filename
;
26 static int conf_lineno
, conf_warnings
, conf_unsaved
;
28 const char conf_defname
[] = "arch/$ARCH/defconfig";
30 static void conf_warning(const char *fmt
, ...)
34 fprintf(stderr
, "%s:%d:warning: ", conf_filename
, conf_lineno
);
35 vfprintf(stderr
, fmt
, ap
);
36 fprintf(stderr
, "\n");
41 static void conf_default_message_callback(const char *fmt
, va_list ap
)
48 static void (*conf_message_callback
) (const char *fmt
, va_list ap
) =
49 conf_default_message_callback
;
50 void conf_set_message_callback(void (*fn
) (const char *fmt
, va_list ap
))
52 conf_message_callback
= fn
;
55 static void conf_message(const char *fmt
, ...)
60 if (conf_message_callback
)
61 conf_message_callback(fmt
, ap
);
64 const char *conf_get_configname(void)
66 char *name
= getenv("KCONFIG_CONFIG");
68 return name
? name
: ".config";
71 const char *conf_get_autoconfig_name(void)
73 char *name
= getenv("KCONFIG_AUTOCONFIG");
75 return name
? name
: "include/config/auto.conf";
78 static char *conf_expand_value(const char *in
)
82 static char res_value
[SYMBOL_MAXLENGTH
];
83 char *dst
, name
[SYMBOL_MAXLENGTH
];
87 while ((src
= strchr(in
, '$'))) {
88 strncat(res_value
, in
, src
- in
);
91 while (isalnum(*src
) || *src
== '_')
94 sym
= sym_lookup(name
, 0);
96 strcat(res_value
, sym_get_string_value(sym
));
99 strcat(res_value
, in
);
104 char *conf_get_default_confname(void)
107 static char fullname
[PATH_MAX
+1];
110 name
= conf_expand_value(conf_defname
);
111 env
= getenv(SRCTREE
);
113 sprintf(fullname
, "%s/%s", env
, name
);
114 if (!stat(fullname
, &buf
))
120 static int conf_set_sym_val(struct symbol
*sym
, int def
, int def_flags
, char *p
)
127 sym
->def
[def
].tri
= mod
;
128 sym
->flags
|= def_flags
;
133 sym
->def
[def
].tri
= yes
;
134 sym
->flags
|= def_flags
;
138 sym
->def
[def
].tri
= no
;
139 sym
->flags
|= def_flags
;
142 conf_warning("symbol value '%s' invalid for %s", p
, sym
->name
);
146 for (p2
= p
; *p2
&& !isspace(*p2
); p2
++)
148 sym
->type
= S_STRING
;
154 for (p2
= p
; (p2
= strpbrk(p2
, "\"\\")); p2
++) {
159 memmove(p2
, p2
+ 1, strlen(p2
));
162 conf_warning("invalid string found");
168 if (sym_string_valid(sym
, p
)) {
169 sym
->def
[def
].val
= strdup(p
);
170 sym
->flags
|= def_flags
;
172 conf_warning("symbol value '%s' invalid for %s", p
, sym
->name
);
182 int conf_read_simple(const char *name
, int def
)
191 in
= zconf_fopen(name
);
193 struct property
*prop
;
195 name
= conf_get_configname();
196 in
= zconf_fopen(name
);
199 sym_add_change_count(1);
200 if (!sym_defconfig_list
) {
202 sym_calc_value(modules_sym
);
206 for_all_defaults(sym_defconfig_list
, prop
) {
207 if (expr_calc_value(prop
->visible
.expr
) == no
||
208 prop
->expr
->type
!= E_SYMBOL
)
210 name
= conf_expand_value(prop
->expr
->left
.sym
->name
);
211 in
= zconf_fopen(name
);
213 conf_message(_("using defaults found in %s"),
223 conf_filename
= name
;
228 def_flags
= SYMBOL_DEF
<< def
;
229 for_all_symbols(i
, sym
) {
230 sym
->flags
|= SYMBOL_CHANGED
;
231 sym
->flags
&= ~(def_flags
|SYMBOL_VALID
);
232 if (sym_is_choice(sym
))
233 sym
->flags
|= def_flags
;
238 if (sym
->def
[def
].val
)
239 free(sym
->def
[def
].val
);
241 sym
->def
[def
].val
= NULL
;
242 sym
->def
[def
].tri
= no
;
246 while (fgets(line
, sizeof(line
), in
)) {
249 if (line
[0] == '#') {
250 if (memcmp(line
+ 2, CONFIG_
, strlen(CONFIG_
)))
252 p
= strchr(line
+ 2 + strlen(CONFIG_
), ' ');
256 if (strncmp(p
, "is not set", 10))
258 if (def
== S_DEF_USER
) {
259 sym
= sym_find(line
+ 2 + strlen(CONFIG_
));
261 sym_add_change_count(1);
265 sym
= sym_lookup(line
+ 2 + strlen(CONFIG_
), 0);
266 if (sym
->type
== S_UNKNOWN
)
267 sym
->type
= S_BOOLEAN
;
269 if (sym
->flags
& def_flags
) {
270 conf_warning("override: reassigning to symbol %s", sym
->name
);
275 sym
->def
[def
].tri
= no
;
276 sym
->flags
|= def_flags
;
281 } else if (memcmp(line
, CONFIG_
, strlen(CONFIG_
)) == 0) {
282 p
= strchr(line
+ strlen(CONFIG_
), '=');
286 p2
= strchr(p
, '\n');
292 if (def
== S_DEF_USER
) {
293 sym
= sym_find(line
+ strlen(CONFIG_
));
295 sym_add_change_count(1);
299 sym
= sym_lookup(line
+ strlen(CONFIG_
), 0);
300 if (sym
->type
== S_UNKNOWN
)
303 if (sym
->flags
& def_flags
) {
304 conf_warning("override: reassigning to symbol %s", sym
->name
);
306 if (conf_set_sym_val(sym
, def
, def_flags
, p
))
309 if (line
[0] != '\r' && line
[0] != '\n')
310 conf_warning("unexpected data");
314 if (sym
&& sym_is_choice_value(sym
)) {
315 struct symbol
*cs
= prop_get_symbol(sym_get_choice_prop(sym
));
316 switch (sym
->def
[def
].tri
) {
320 if (cs
->def
[def
].tri
== yes
) {
321 conf_warning("%s creates inconsistent choice state", sym
->name
);
322 cs
->flags
&= ~def_flags
;
326 if (cs
->def
[def
].tri
!= no
)
327 conf_warning("override: %s changes choice state", sym
->name
);
328 cs
->def
[def
].val
= sym
;
331 cs
->def
[def
].tri
= EXPR_OR(cs
->def
[def
].tri
, sym
->def
[def
].tri
);
337 sym_calc_value(modules_sym
);
341 int conf_read(const char *name
)
343 struct symbol
*sym
, *choice_sym
;
344 struct property
*prop
;
348 sym_set_change_count(0);
350 if (conf_read_simple(name
, S_DEF_USER
))
353 for_all_symbols(i
, sym
) {
355 if (sym_is_choice(sym
) || (sym
->flags
& SYMBOL_AUTO
))
357 if (sym_has_value(sym
) && (sym
->flags
& SYMBOL_WRITE
)) {
358 /* check that calculated value agrees with saved value */
362 if (sym
->def
[S_DEF_USER
].tri
!= sym_get_tristate_value(sym
))
364 if (!sym_is_choice(sym
))
367 if (!strcmp(sym
->curr
.val
, sym
->def
[S_DEF_USER
].val
))
371 } else if (!sym_has_value(sym
) && !(sym
->flags
& SYMBOL_WRITE
))
372 /* no previous value and not saved */
375 /* maybe print value in verbose mode... */
377 if (!sym_is_choice(sym
))
379 /* The choice symbol only has a set value (and thus is not new)
380 * if all its visible childs have values.
382 prop
= sym_get_choice_prop(sym
);
384 expr_list_for_each_sym(prop
->expr
, e
, choice_sym
)
385 if (choice_sym
->visible
!= no
)
386 flags
&= choice_sym
->flags
;
387 sym
->flags
&= flags
| ~SYMBOL_DEF_USER
;
390 for_all_symbols(i
, sym
) {
391 if (sym_has_value(sym
) && !sym_is_choice_value(sym
)) {
392 /* Reset values of generates values, so they'll appear
393 * as new, if they should become visible, but that
394 * doesn't quite work if the Kconfig and the saved
395 * configuration disagree.
397 if (sym
->visible
== no
&& !conf_unsaved
)
398 sym
->flags
&= ~SYMBOL_DEF_USER
;
403 /* Reset a string value if it's out of range */
404 if (sym_string_within_range(sym
, sym
->def
[S_DEF_USER
].val
))
406 sym
->flags
&= ~(SYMBOL_VALID
|SYMBOL_DEF_USER
);
415 sym_add_change_count(conf_warnings
|| conf_unsaved
);
420 /* Write a S_STRING */
421 static void conf_write_string(bool headerfile
, const char *name
,
422 const char *str
, FILE *out
)
426 fprintf(out
, "#define %s%s \"", CONFIG_
, name
);
428 fprintf(out
, "%s%s=\"", CONFIG_
, name
);
431 l
= strcspn(str
, "\"\\");
433 xfwrite(str
, l
, 1, out
);
438 fprintf(out
, "\\%c", *str
++);
443 static void conf_write_symbol(struct symbol
*sym
, enum symbol_type type
,
444 FILE *out
, bool write_no
)
451 switch (sym_get_tristate_value(sym
)) {
454 fprintf(out
, "# %s%s is not set\n",
458 fprintf(out
, "%s%s=m\n", CONFIG_
, sym
->name
);
461 fprintf(out
, "%s%s=y\n", CONFIG_
, sym
->name
);
466 conf_write_string(false, sym
->name
, sym_get_string_value(sym
), out
);
470 str
= sym_get_string_value(sym
);
471 fprintf(out
, "%s%s=%s\n", CONFIG_
, sym
->name
, str
);
480 * Write out a minimal config.
481 * All values that has default values are skipped as this is redundant.
483 int conf_write_defconfig(const char *filename
)
489 out
= fopen(filename
, "w");
493 sym_clear_all_valid();
495 /* Traverse all menus to find all relevant symbols */
496 menu
= rootmenu
.list
;
502 if (!menu_is_visible(menu
))
504 } else if (!sym_is_choice(sym
)) {
506 if (!(sym
->flags
& SYMBOL_WRITE
))
508 sym
->flags
&= ~SYMBOL_WRITE
;
509 /* If we cannot change the symbol - skip */
510 if (!sym_is_changable(sym
))
512 /* If symbol equals to default value - skip */
513 if (strcmp(sym_get_string_value(sym
), sym_get_string_default(sym
)) == 0)
517 * If symbol is a choice value and equals to the
518 * default for a choice - skip.
519 * But only if value is bool and equal to "y" and
520 * choice is not "optional".
521 * (If choice is "optional" then all values can be "n")
523 if (sym_is_choice_value(sym
)) {
527 cs
= prop_get_symbol(sym_get_choice_prop(sym
));
528 ds
= sym_choice_default(cs
);
529 if (!sym_is_optional(cs
) && sym
== ds
) {
530 if ((sym
->type
== S_BOOLEAN
) &&
531 sym_get_tristate_value(sym
) == yes
)
535 conf_write_symbol(sym
, sym
->type
, out
, true);
538 if (menu
->list
!= NULL
) {
541 else if (menu
->next
!= NULL
) {
544 while ((menu
= menu
->parent
)) {
545 if (menu
->next
!= NULL
) {
556 int conf_write(const char *name
)
561 const char *basename
;
563 char dirname
[PATH_MAX
+1], tmpname
[PATH_MAX
+1], newname
[PATH_MAX
+1];
564 enum symbol_type type
;
566 int use_timestamp
= 1;
570 if (name
&& name
[0]) {
574 if (!stat(name
, &st
) && S_ISDIR(st
.st_mode
)) {
575 strcpy(dirname
, name
);
576 strcat(dirname
, "/");
577 basename
= conf_get_configname();
578 } else if ((slash
= strrchr(name
, '/'))) {
579 int size
= slash
- name
+ 1;
580 memcpy(dirname
, name
, size
);
583 basename
= slash
+ 1;
585 basename
= conf_get_configname();
589 basename
= conf_get_configname();
591 sprintf(newname
, "%s%s", dirname
, basename
);
592 env
= getenv("KCONFIG_OVERWRITECONFIG");
594 sprintf(tmpname
, "%s.tmpconfig.%d", dirname
, (int)getpid());
595 out
= fopen(tmpname
, "w");
598 out
= fopen(newname
, "w");
604 env
= getenv("KCONFIG_NOTIMESTAMP");
609 "# Automatically generated make config: don't edit\n"
613 rootmenu
.prompt
->text
,
614 use_timestamp
? "# " : "",
615 use_timestamp
? ctime(&now
) : "");
617 if (!conf_get_changed())
618 sym_clear_all_valid();
620 menu
= rootmenu
.list
;
624 if (!menu_is_visible(menu
))
626 str
= menu_get_prompt(menu
);
631 } else if (!(sym
->flags
& SYMBOL_CHOICE
)) {
633 if (!(sym
->flags
& SYMBOL_WRITE
))
635 sym
->flags
&= ~SYMBOL_WRITE
;
637 if (type
== S_TRISTATE
) {
638 sym_calc_value(modules_sym
);
639 if (modules_sym
->curr
.tri
== no
)
642 /* Write config symbol to file */
643 conf_write_symbol(sym
, type
, out
, true);
653 else while ((menu
= menu
->parent
)) {
663 strcat(dirname
, basename
);
664 strcat(dirname
, ".old");
665 rename(newname
, dirname
);
666 if (rename(tmpname
, newname
))
670 conf_message(_("configuration written to %s"), newname
);
672 sym_set_change_count(0);
677 static int conf_split_config(void)
680 char path
[PATH_MAX
+1];
686 name
= conf_get_autoconfig_name();
687 conf_read_simple(name
, S_DEF_AUTO
);
689 if (chdir("include/config"))
693 for_all_symbols(i
, sym
) {
695 if ((sym
->flags
& SYMBOL_AUTO
) || !sym
->name
)
697 if (sym
->flags
& SYMBOL_WRITE
) {
698 if (sym
->flags
& SYMBOL_DEF_AUTO
) {
700 * symbol has old and new value,
706 if (sym_get_tristate_value(sym
) ==
707 sym
->def
[S_DEF_AUTO
].tri
)
713 if (!strcmp(sym_get_string_value(sym
),
714 sym
->def
[S_DEF_AUTO
].val
))
722 * If there is no old value, only 'no' (unset)
723 * is allowed as new value.
728 if (sym_get_tristate_value(sym
) == no
)
735 } else if (!(sym
->flags
& SYMBOL_DEF_AUTO
))
736 /* There is neither an old nor a new value. */
739 * There is an old value, but no new value ('no' (unset)
740 * isn't saved in auto.conf, so the old value is always
741 * different from 'no').
744 /* Replace all '_' and append ".h" */
749 *d
++ = (c
== '_') ? '/' : c
;
753 /* Assume directory path already exists. */
754 fd
= open(path
, O_WRONLY
| O_CREAT
| O_TRUNC
, 0644);
756 if (errno
!= ENOENT
) {
761 * Create directory components,
762 * unless they exist already.
765 while ((d
= strchr(d
, '/'))) {
767 if (stat(path
, &sb
) && mkdir(path
, 0755)) {
774 fd
= open(path
, O_WRONLY
| O_CREAT
| O_TRUNC
, 0644);
789 int conf_write_autoconf(void)
794 FILE *out
, *tristate
, *out_h
;
798 sym_clear_all_valid();
800 file_write_dep("include/config/auto.conf.cmd");
802 if (conf_split_config())
805 out
= fopen(".tmpconfig", "w");
809 tristate
= fopen(".tmpconfig_tristate", "w");
815 out_h
= fopen(".tmpconfig.h", "w");
824 "# Automatically generated make config: don't edit\n"
828 rootmenu
.prompt
->text
, ctime(&now
));
829 fprintf(tristate
, "#\n"
830 "# Automatically generated - do not edit\n"
832 fprintf(out_h
, "/*\n"
833 " * Automatically generated C config: don't edit\n"
837 "#define AUTOCONF_INCLUDED\n",
838 rootmenu
.prompt
->text
, ctime(&now
));
840 for_all_symbols(i
, sym
) {
842 if (!(sym
->flags
& SYMBOL_WRITE
) || !sym
->name
)
845 /* write symbol to config file */
846 conf_write_symbol(sym
, sym
->type
, out
, false);
848 /* update autoconf and tristate files */
852 switch (sym_get_tristate_value(sym
)) {
856 fprintf(tristate
, "%s%s=M\n",
858 fprintf(out_h
, "#define %s%s_MODULE 1\n",
862 if (sym
->type
== S_TRISTATE
)
863 fprintf(tristate
,"%s%s=Y\n",
865 fprintf(out_h
, "#define %s%s 1\n",
871 conf_write_string(true, sym
->name
, sym_get_string_value(sym
), out_h
);
874 str
= sym_get_string_value(sym
);
875 if (str
[0] != '0' || (str
[1] != 'x' && str
[1] != 'X')) {
876 fprintf(out_h
, "#define %s%s 0x%s\n",
877 CONFIG_
, sym
->name
, str
);
881 str
= sym_get_string_value(sym
);
882 fprintf(out_h
, "#define %s%s %s\n",
883 CONFIG_
, sym
->name
, str
);
893 name
= getenv("KCONFIG_AUTOHEADER");
895 name
= "include/generated/autoconf.h";
896 if (rename(".tmpconfig.h", name
))
898 name
= getenv("KCONFIG_TRISTATE");
900 name
= "include/config/tristate.conf";
901 if (rename(".tmpconfig_tristate", name
))
903 name
= conf_get_autoconfig_name();
905 * This must be the last step, kbuild has a dependency on auto.conf
906 * and this marks the successful completion of the previous steps.
908 if (rename(".tmpconfig", name
))
914 static int sym_change_count
;
915 static void (*conf_changed_callback
)(void);
917 void sym_set_change_count(int count
)
919 int _sym_change_count
= sym_change_count
;
920 sym_change_count
= count
;
921 if (conf_changed_callback
&&
922 (bool)_sym_change_count
!= (bool)count
)
923 conf_changed_callback();
926 void sym_add_change_count(int count
)
928 sym_set_change_count(count
+ sym_change_count
);
931 bool conf_get_changed(void)
933 return sym_change_count
;
936 void conf_set_changed_callback(void (*fn
)(void))
938 conf_changed_callback
= fn
;
941 static void randomize_choice_values(struct symbol
*csym
)
943 struct property
*prop
;
949 * If choice is mod then we may have more items slected
950 * and if no then no-one.
951 * In both cases stop.
953 if (csym
->curr
.tri
!= yes
)
956 prop
= sym_get_choice_prop(csym
);
958 /* count entries in choice block */
960 expr_list_for_each_sym(prop
->expr
, e
, sym
)
964 * find a random value and set it to yes,
965 * set the rest to no so we have only one set
967 def
= (rand() % cnt
);
970 expr_list_for_each_sym(prop
->expr
, e
, sym
) {
972 sym
->def
[S_DEF_USER
].tri
= yes
;
973 csym
->def
[S_DEF_USER
].val
= sym
;
976 sym
->def
[S_DEF_USER
].tri
= no
;
979 csym
->flags
|= SYMBOL_DEF_USER
;
980 /* clear VALID to get value calculated */
981 csym
->flags
&= ~(SYMBOL_VALID
);
984 static void set_all_choice_values(struct symbol
*csym
)
986 struct property
*prop
;
990 prop
= sym_get_choice_prop(csym
);
993 * Set all non-assinged choice values to no
995 expr_list_for_each_sym(prop
->expr
, e
, sym
) {
996 if (!sym_has_value(sym
))
997 sym
->def
[S_DEF_USER
].tri
= no
;
999 csym
->flags
|= SYMBOL_DEF_USER
;
1000 /* clear VALID to get value calculated */
1001 csym
->flags
&= ~(SYMBOL_VALID
);
1004 void conf_set_all_new_symbols(enum conf_def_mode mode
)
1006 struct symbol
*sym
, *csym
;
1009 for_all_symbols(i
, sym
) {
1010 if (sym_has_value(sym
))
1012 switch (sym_get_type(sym
)) {
1017 sym
->def
[S_DEF_USER
].tri
= yes
;
1020 sym
->def
[S_DEF_USER
].tri
= mod
;
1023 sym
->def
[S_DEF_USER
].tri
= no
;
1026 cnt
= sym_get_type(sym
) == S_TRISTATE
? 3 : 2;
1027 sym
->def
[S_DEF_USER
].tri
= (tristate
)(rand() % cnt
);
1032 if (!(sym_is_choice(sym
) && mode
== def_random
))
1033 sym
->flags
|= SYMBOL_DEF_USER
;
1041 sym_clear_all_valid();
1044 * We have different type of choice blocks.
1045 * If curr.tri equal to mod then we can select several
1046 * choice symbols in one block.
1047 * In this case we do nothing.
1048 * If curr.tri equal yes then only one symbol can be
1049 * selected in a choice block and we set it to yes,
1050 * and the rest to no.
1052 for_all_symbols(i
, csym
) {
1053 if (sym_has_value(csym
) || !sym_is_choice(csym
))
1056 sym_calc_value(csym
);
1057 if (mode
== def_random
)
1058 randomize_choice_values(csym
);
1060 set_all_choice_values(csym
);