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-rw-r--r--scripts/kconfig/confdata.c188
1 files changed, 124 insertions, 64 deletions
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 5a58965d88..43eda40c38 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -182,10 +182,66 @@ static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
return 0;
}
+#define LINE_GROWTH 16
+static int add_byte(int c, char **lineptr, size_t slen, size_t *n)
+{
+ char *nline;
+ size_t new_size = slen + 1;
+ if (new_size > *n) {
+ new_size += LINE_GROWTH - 1;
+ new_size *= 2;
+ nline = realloc(*lineptr, new_size);
+ if (!nline)
+ return -1;
+
+ *lineptr = nline;
+ *n = new_size;
+ }
+
+ (*lineptr)[slen] = c;
+
+ return 0;
+}
+
+static ssize_t compat_getline(char **lineptr, size_t *n, FILE *stream)
+{
+ char *line = *lineptr;
+ size_t slen = 0;
+
+ for (;;) {
+ int c = getc(stream);
+
+ switch (c) {
+ case '\n':
+ if (add_byte(c, &line, slen, n) < 0)
+ goto e_out;
+ slen++;
+ /* fall through */
+ case EOF:
+ if (add_byte('\0', &line, slen, n) < 0)
+ goto e_out;
+ *lineptr = line;
+ if (slen == 0)
+ return -1;
+ return slen;
+ default:
+ if (add_byte(c, &line, slen, n) < 0)
+ goto e_out;
+ slen++;
+ }
+ }
+
+e_out:
+ line[slen-1] = '\0';
+ *lineptr = line;
+ return -1;
+}
+
int conf_read_simple(const char *name, int def)
{
FILE *in = NULL;
- char line[1024];
+ char *line = NULL;
+ size_t line_asize = 0;
char *p, *p2;
struct symbol *sym;
int i, def_flags;
@@ -247,7 +303,7 @@ load:
}
}
- while (fgets(line, sizeof(line), in)) {
+ while (compat_getline(&line, &line_asize, in) != -1) {
conf_lineno++;
sym = NULL;
if (line[0] == '#') {
@@ -335,6 +391,7 @@ setsym:
cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
}
}
+ free(line);
fclose(in);
if (modules_sym)
@@ -344,10 +401,8 @@ setsym:
int conf_read(const char *name)
{
- struct symbol *sym, *choice_sym;
- struct property *prop;
- struct expr *e;
- int i, flags;
+ struct symbol *sym;
+ int i;
sym_set_change_count(0);
@@ -357,7 +412,7 @@ int conf_read(const char *name)
for_all_symbols(i, sym) {
sym_calc_value(sym);
if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
- goto sym_ok;
+ continue;
if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
/* check that calculated value agrees with saved value */
switch (sym->type) {
@@ -366,30 +421,18 @@ int conf_read(const char *name)
if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
break;
if (!sym_is_choice(sym))
- goto sym_ok;
+ continue;
/* fall through */
default:
if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
- goto sym_ok;
+ continue;
break;
}
} else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
/* no previous value and not saved */
- goto sym_ok;
+ continue;
conf_unsaved++;
/* maybe print value in verbose mode... */
- sym_ok:
- if (!sym_is_choice(sym))
- continue;
- /* The choice symbol only has a set value (and thus is not new)
- * if all its visible childs have values.
- */
- prop = sym_get_choice_prop(sym);
- flags = sym->flags;
- expr_list_for_each_sym(prop->expr, e, choice_sym)
- if (choice_sym->visible != no)
- flags &= choice_sym->flags;
- sym->flags &= flags | ~SYMBOL_DEF_USER;
}
for_all_symbols(i, sym) {
@@ -464,7 +507,7 @@ kconfig_print_comment(FILE *fp, const char *value, void *arg)
fprintf(fp, "#");
if (l) {
fprintf(fp, " ");
- fwrite(p, l, 1, fp);
+ xfwrite(p, l, 1, fp);
p += l;
}
fprintf(fp, "\n");
@@ -537,7 +580,7 @@ header_print_comment(FILE *fp, const char *value, void *arg)
fprintf(fp, " *");
if (l) {
fprintf(fp, " ");
- fwrite(p, l, 1, fp);
+ xfwrite(p, l, 1, fp);
p += l;
}
fprintf(fp, "\n");
@@ -554,35 +597,6 @@ static struct conf_printer header_printer_cb =
};
/*
- * Generate the __enabled_CONFIG_* and __enabled_CONFIG_*_MODULE macros for
- * use by the IS_{ENABLED,BUILTIN,MODULE} macros. The _MODULE variant is
- * generated even for booleans so that the IS_ENABLED() macro works.
- */
-static void
-header_print__enabled_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
-{
-
- switch (sym->type) {
- case S_BOOLEAN:
- case S_TRISTATE: {
- fprintf(fp, "#define __enabled_" CONFIG_ "%s %d\n",
- sym->name, (*value == 'y'));
- fprintf(fp, "#define __enabled_" CONFIG_ "%s_MODULE %d\n",
- sym->name, (*value == 'm'));
- break;
- }
- default:
- break;
- }
-}
-
-static struct conf_printer header__enabled_printer_cb =
-{
- .print_symbol = header_print__enabled_symbol,
- .print_comment = header_print_comment,
-};
-
-/*
* Tristate printer
*
* This printer is used when generating the `include/config/tristate.conf' file.
@@ -963,16 +977,11 @@ int conf_write_autoconf(void)
conf_write_heading(out_h, &header_printer_cb, NULL);
for_all_symbols(i, sym) {
- if (!sym->name)
- continue;
-
sym_calc_value(sym);
-
- conf_write_symbol(out_h, sym, &header__enabled_printer_cb, NULL);
-
- if (!(sym->flags & SYMBOL_WRITE))
+ if (!(sym->flags & SYMBOL_WRITE) || !sym->name)
continue;
+ /* write symbol to auto.conf, tristate and header files */
conf_write_symbol(out, sym, &kconfig_printer_cb, (void *)1);
conf_write_symbol(tristate, sym, &tristate_printer_cb, (void *)1);
@@ -1097,10 +1106,54 @@ static void set_all_choice_values(struct symbol *csym)
void conf_set_all_new_symbols(enum conf_def_mode mode)
{
struct symbol *sym, *csym;
- int i, cnt;
+ int i, cnt, pby, pty, ptm; /* pby: probability of boolean = y
+ * pty: probability of tristate = y
+ * ptm: probability of tristate = m
+ */
+
+ pby = 50; pty = ptm = 33; /* can't go as the default in switch-case
+ * below, otherwise gcc whines about
+ * -Wmaybe-uninitialized */
+ if (mode == def_random) {
+ int n, p[3];
+ char *env = getenv("KCONFIG_PROBABILITY");
+ n = 0;
+ while( env && *env ) {
+ char *endp;
+ int tmp = strtol( env, &endp, 10 );
+ if( tmp >= 0 && tmp <= 100 ) {
+ p[n++] = tmp;
+ } else {
+ errno = ERANGE;
+ perror( "KCONFIG_PROBABILITY" );
+ exit( 1 );
+ }
+ env = (*endp == ':') ? endp+1 : endp;
+ if( n >=3 ) {
+ break;
+ }
+ }
+ switch( n ) {
+ case 1:
+ pby = p[0]; ptm = pby/2; pty = pby-ptm;
+ break;
+ case 2:
+ pty = p[0]; ptm = p[1]; pby = pty + ptm;
+ break;
+ case 3:
+ pby = p[0]; pty = p[1]; ptm = p[2];
+ break;
+ }
+
+ if( pty+ptm > 100 ) {
+ errno = ERANGE;
+ perror( "KCONFIG_PROBABILITY" );
+ exit( 1 );
+ }
+ }
for_all_symbols(i, sym) {
- if (sym_has_value(sym))
+ if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID))
continue;
switch (sym_get_type(sym)) {
case S_BOOLEAN:
@@ -1116,8 +1169,15 @@ void conf_set_all_new_symbols(enum conf_def_mode mode)
sym->def[S_DEF_USER].tri = no;
break;
case def_random:
- cnt = sym_get_type(sym) == S_TRISTATE ? 3 : 2;
- sym->def[S_DEF_USER].tri = (tristate)(rand() % cnt);
+ sym->def[S_DEF_USER].tri = no;
+ cnt = rand() % 100;
+ if (sym->type == S_TRISTATE) {
+ if (cnt < pty)
+ sym->def[S_DEF_USER].tri = yes;
+ else if (cnt < (pty+ptm))
+ sym->def[S_DEF_USER].tri = mod;
+ } else if (cnt < pby)
+ sym->def[S_DEF_USER].tri = yes;
break;
default:
continue;
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-19 11:21:45 +0000