u-boot/scripts/kconfig/confdata.c
Stefan Roese 20c20826ef Kconfig: Enable usage of escape char '\' in string values
I might have missed something, but I failed to use the escape char '\'
in strings. To pass a printf format string like "foo %d bar\n" via
Kconfig to the code.

Right now its not possible to use the escape character '\' in Kconfig
string values correctly to e.g. set this string value "test output\n".
The '\n' will be converted to 'n'.

The current implementation removes some of the '\' chars from the input
string in conf_set_sym_val(). Examples:

'\'	-> ''
'\\'	-> '\'
'\\\'	-> '\'
'\\\\'	-> '\\'
...

And then doubles the backslash chars in the output string in
sym_escape_string_value(). Example:

'\'	-> ''	-> ''
'\\'	-> '\'	-> '\\'
'\\\'	-> '\'	-> '\\'
'\\\\'	-> '\\'	-> '\\\\'
...

As you see in these examples, its impossible to generate a single '\'
charater in the output string as its needed for something like '\n'.

This patch now changes this behavior to not drop some backslashes in
conf_set_sym_val() and to not add new backslashes in the resulting
output string. Removing the function sym_escape_string_value()
completely as its not needed anymore.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Tom Rini <trini@konsulko.com>
2015-06-08 10:45:04 -04:00

1240 lines
26 KiB
C

/*
* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
* Released under the terms of the GNU GPL v2.0.
*/
#include <sys/stat.h>
#include <ctype.h>
#include <errno.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "lkc.h"
static void conf_warning(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
static void conf_message(const char *fmt, ...)
__attribute__ ((format (printf, 1, 2)));
static const char *conf_filename;
static int conf_lineno, conf_warnings, conf_unsaved;
const char conf_defname[] = "arch/$ARCH/defconfig";
static void conf_warning(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
fprintf(stderr, "%s:%d:warning: ", conf_filename, conf_lineno);
vfprintf(stderr, fmt, ap);
fprintf(stderr, "\n");
va_end(ap);
conf_warnings++;
}
static void conf_default_message_callback(const char *fmt, va_list ap)
{
printf("#\n# ");
vprintf(fmt, ap);
printf("\n#\n");
}
static void (*conf_message_callback) (const char *fmt, va_list ap) =
conf_default_message_callback;
void conf_set_message_callback(void (*fn) (const char *fmt, va_list ap))
{
conf_message_callback = fn;
}
static void conf_message(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
if (conf_message_callback)
conf_message_callback(fmt, ap);
}
const char *conf_get_configname(void)
{
char *name = getenv("KCONFIG_CONFIG");
return name ? name : ".config";
}
const char *conf_get_autoconfig_name(void)
{
char *name = getenv("KCONFIG_AUTOCONFIG");
return name ? name : "include/config/auto.conf";
}
static char *conf_expand_value(const char *in)
{
struct symbol *sym;
const char *src;
static char res_value[SYMBOL_MAXLENGTH];
char *dst, name[SYMBOL_MAXLENGTH];
res_value[0] = 0;
dst = name;
while ((src = strchr(in, '$'))) {
strncat(res_value, in, src - in);
src++;
dst = name;
while (isalnum(*src) || *src == '_')
*dst++ = *src++;
*dst = 0;
sym = sym_lookup(name, 0);
sym_calc_value(sym);
strcat(res_value, sym_get_string_value(sym));
in = src;
}
strcat(res_value, in);
return res_value;
}
char *conf_get_default_confname(void)
{
struct stat buf;
static char fullname[PATH_MAX+1];
char *env, *name;
name = conf_expand_value(conf_defname);
env = getenv(SRCTREE);
if (env) {
sprintf(fullname, "%s/%s", env, name);
if (!stat(fullname, &buf))
return fullname;
}
return name;
}
static int conf_set_sym_val(struct symbol *sym, int def, int def_flags, char *p)
{
char *p2;
switch (sym->type) {
case S_TRISTATE:
if (p[0] == 'm') {
sym->def[def].tri = mod;
sym->flags |= def_flags;
break;
}
/* fall through */
case S_BOOLEAN:
if (p[0] == 'y') {
sym->def[def].tri = yes;
sym->flags |= def_flags;
break;
}
if (p[0] == 'n') {
sym->def[def].tri = no;
sym->flags |= def_flags;
break;
}
if (def != S_DEF_AUTO)
conf_warning("symbol value '%s' invalid for %s",
p, sym->name);
return 1;
case S_OTHER:
if (*p != '"') {
for (p2 = p; *p2 && !isspace(*p2); p2++)
;
sym->type = S_STRING;
goto done;
}
/* fall through */
case S_STRING:
if (*p++ != '"')
break;
/* Last char has to be a '"' */
if (p[strlen(p) - 1] != '"') {
if (def != S_DEF_AUTO)
conf_warning("invalid string found");
return 1;
}
/* Overwrite '"' with \0 for string termination */
p[strlen(p) - 1] = 0;
/* fall through */
case S_INT:
case S_HEX:
done:
if (sym_string_valid(sym, p)) {
sym->def[def].val = strdup(p);
sym->flags |= def_flags;
} else {
if (def != S_DEF_AUTO)
conf_warning("symbol value '%s' invalid for %s",
p, sym->name);
return 1;
}
break;
default:
;
}
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 = NULL;
size_t line_asize = 0;
char *p, *p2;
struct symbol *sym;
int i, def_flags;
if (name) {
in = zconf_fopen(name);
} else {
struct property *prop;
name = conf_get_configname();
in = zconf_fopen(name);
if (in)
goto load;
sym_add_change_count(1);
if (!sym_defconfig_list) {
if (modules_sym)
sym_calc_value(modules_sym);
return 1;
}
for_all_defaults(sym_defconfig_list, prop) {
if (expr_calc_value(prop->visible.expr) == no ||
prop->expr->type != E_SYMBOL)
continue;
name = conf_expand_value(prop->expr->left.sym->name);
in = zconf_fopen(name);
if (in) {
conf_message(_("using defaults found in %s"),
name);
goto load;
}
}
}
if (!in)
return 1;
load:
conf_filename = name;
conf_lineno = 0;
conf_warnings = 0;
conf_unsaved = 0;
def_flags = SYMBOL_DEF << def;
for_all_symbols(i, sym) {
sym->flags |= SYMBOL_CHANGED;
sym->flags &= ~(def_flags|SYMBOL_VALID);
if (sym_is_choice(sym))
sym->flags |= def_flags;
switch (sym->type) {
case S_INT:
case S_HEX:
case S_STRING:
if (sym->def[def].val)
free(sym->def[def].val);
/* fall through */
default:
sym->def[def].val = NULL;
sym->def[def].tri = no;
}
}
while (compat_getline(&line, &line_asize, in) != -1) {
conf_lineno++;
sym = NULL;
if (line[0] == '#') {
if (memcmp(line + 2, CONFIG_, strlen(CONFIG_)))
continue;
p = strchr(line + 2 + strlen(CONFIG_), ' ');
if (!p)
continue;
*p++ = 0;
if (strncmp(p, "is not set", 10))
continue;
if (def == S_DEF_USER) {
sym = sym_find(line + 2 + strlen(CONFIG_));
if (!sym) {
sym_add_change_count(1);
goto setsym;
}
} else {
sym = sym_lookup(line + 2 + strlen(CONFIG_), 0);
if (sym->type == S_UNKNOWN)
sym->type = S_BOOLEAN;
}
if (sym->flags & def_flags) {
conf_warning("override: reassigning to symbol %s", sym->name);
}
switch (sym->type) {
case S_BOOLEAN:
case S_TRISTATE:
sym->def[def].tri = no;
sym->flags |= def_flags;
break;
default:
;
}
} else if (memcmp(line, CONFIG_, strlen(CONFIG_)) == 0) {
p = strchr(line + strlen(CONFIG_), '=');
if (!p)
continue;
*p++ = 0;
p2 = strchr(p, '\n');
if (p2) {
*p2-- = 0;
if (*p2 == '\r')
*p2 = 0;
}
if (def == S_DEF_USER) {
sym = sym_find(line + strlen(CONFIG_));
if (!sym) {
sym_add_change_count(1);
goto setsym;
}
} else {
sym = sym_lookup(line + strlen(CONFIG_), 0);
if (sym->type == S_UNKNOWN)
sym->type = S_OTHER;
}
if (sym->flags & def_flags) {
conf_warning("override: reassigning to symbol %s", sym->name);
}
if (conf_set_sym_val(sym, def, def_flags, p))
continue;
} else {
if (line[0] != '\r' && line[0] != '\n')
conf_warning("unexpected data");
continue;
}
setsym:
if (sym && sym_is_choice_value(sym)) {
struct symbol *cs = prop_get_symbol(sym_get_choice_prop(sym));
switch (sym->def[def].tri) {
case no:
break;
case mod:
if (cs->def[def].tri == yes) {
conf_warning("%s creates inconsistent choice state", sym->name);
cs->flags &= ~def_flags;
}
break;
case yes:
if (cs->def[def].tri != no)
conf_warning("override: %s changes choice state", sym->name);
cs->def[def].val = sym;
break;
}
cs->def[def].tri = EXPR_OR(cs->def[def].tri, sym->def[def].tri);
}
}
free(line);
fclose(in);
if (modules_sym)
sym_calc_value(modules_sym);
return 0;
}
int conf_read(const char *name)
{
struct symbol *sym;
int i;
sym_set_change_count(0);
if (conf_read_simple(name, S_DEF_USER))
return 1;
for_all_symbols(i, sym) {
sym_calc_value(sym);
if (sym_is_choice(sym) || (sym->flags & SYMBOL_AUTO))
continue;
if (sym_has_value(sym) && (sym->flags & SYMBOL_WRITE)) {
/* check that calculated value agrees with saved value */
switch (sym->type) {
case S_BOOLEAN:
case S_TRISTATE:
if (sym->def[S_DEF_USER].tri != sym_get_tristate_value(sym))
break;
if (!sym_is_choice(sym))
continue;
/* fall through */
default:
if (!strcmp(sym->curr.val, sym->def[S_DEF_USER].val))
continue;
break;
}
} else if (!sym_has_value(sym) && !(sym->flags & SYMBOL_WRITE))
/* no previous value and not saved */
continue;
conf_unsaved++;
/* maybe print value in verbose mode... */
}
for_all_symbols(i, sym) {
if (sym_has_value(sym) && !sym_is_choice_value(sym)) {
/* Reset values of generates values, so they'll appear
* as new, if they should become visible, but that
* doesn't quite work if the Kconfig and the saved
* configuration disagree.
*/
if (sym->visible == no && !conf_unsaved)
sym->flags &= ~SYMBOL_DEF_USER;
switch (sym->type) {
case S_STRING:
case S_INT:
case S_HEX:
/* Reset a string value if it's out of range */
if (sym_string_within_range(sym, sym->def[S_DEF_USER].val))
break;
sym->flags &= ~(SYMBOL_VALID|SYMBOL_DEF_USER);
conf_unsaved++;
break;
default:
break;
}
}
}
sym_add_change_count(conf_warnings || conf_unsaved);
return 0;
}
/*
* Kconfig configuration printer
*
* This printer is used when generating the resulting configuration after
* kconfig invocation and `defconfig' files. Unset symbol might be omitted by
* passing a non-NULL argument to the printer.
*
*/
static void
kconfig_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
{
switch (sym->type) {
case S_BOOLEAN:
case S_TRISTATE:
if (*value == 'n') {
bool skip_unset = (arg != NULL);
if (!skip_unset)
fprintf(fp, "# %s%s is not set\n",
CONFIG_, sym->name);
return;
}
break;
default:
break;
}
fprintf(fp, "%s%s=%s\n", CONFIG_, sym->name, value);
}
static void
kconfig_print_comment(FILE *fp, const char *value, void *arg)
{
const char *p = value;
size_t l;
for (;;) {
l = strcspn(p, "\n");
fprintf(fp, "#");
if (l) {
fprintf(fp, " ");
xfwrite(p, l, 1, fp);
p += l;
}
fprintf(fp, "\n");
if (*p++ == '\0')
break;
}
}
static struct conf_printer kconfig_printer_cb =
{
.print_symbol = kconfig_print_symbol,
.print_comment = kconfig_print_comment,
};
/*
* Header printer
*
* This printer is used when generating the `include/generated/autoconf.h' file.
*/
static void
header_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
{
switch (sym->type) {
case S_BOOLEAN:
case S_TRISTATE: {
const char *suffix = "";
switch (*value) {
case 'n':
break;
case 'm':
suffix = "_MODULE";
/* fall through */
default:
fprintf(fp, "#define %s%s%s 1\n",
CONFIG_, sym->name, suffix);
}
break;
}
case S_HEX: {
const char *prefix = "";
if (value[0] != '0' || (value[1] != 'x' && value[1] != 'X'))
prefix = "0x";
fprintf(fp, "#define %s%s %s%s\n",
CONFIG_, sym->name, prefix, value);
break;
}
case S_STRING:
case S_INT:
fprintf(fp, "#define %s%s %s\n",
CONFIG_, sym->name, value);
break;
default:
break;
}
}
static void
header_print_comment(FILE *fp, const char *value, void *arg)
{
const char *p = value;
size_t l;
fprintf(fp, "/*\n");
for (;;) {
l = strcspn(p, "\n");
fprintf(fp, " *");
if (l) {
fprintf(fp, " ");
xfwrite(p, l, 1, fp);
p += l;
}
fprintf(fp, "\n");
if (*p++ == '\0')
break;
}
fprintf(fp, " */\n");
}
static struct conf_printer header_printer_cb =
{
.print_symbol = header_print_symbol,
.print_comment = header_print_comment,
};
/*
* Tristate printer
*
* This printer is used when generating the `include/config/tristate.conf' file.
*/
static void
tristate_print_symbol(FILE *fp, struct symbol *sym, const char *value, void *arg)
{
if (sym->type == S_TRISTATE && *value != 'n')
fprintf(fp, "%s%s=%c\n", CONFIG_, sym->name, (char)toupper(*value));
}
static struct conf_printer tristate_printer_cb =
{
.print_symbol = tristate_print_symbol,
.print_comment = kconfig_print_comment,
};
static void conf_write_symbol(FILE *fp, struct symbol *sym,
struct conf_printer *printer, void *printer_arg)
{
const char *str;
char *str2;
switch (sym->type) {
case S_OTHER:
case S_UNKNOWN:
break;
case S_STRING:
str = sym_get_string_value(sym);
str2 = xmalloc(strlen(str) + 3);
sprintf(str2, "\"%s\"", str);
printer->print_symbol(fp, sym, str2, printer_arg);
free((void *)str2);
break;
default:
str = sym_get_string_value(sym);
printer->print_symbol(fp, sym, str, printer_arg);
}
}
static void
conf_write_heading(FILE *fp, struct conf_printer *printer, void *printer_arg)
{
char buf[256];
snprintf(buf, sizeof(buf),
"\n"
"Automatically generated file; DO NOT EDIT.\n"
"%s\n",
rootmenu.prompt->text);
printer->print_comment(fp, buf, printer_arg);
}
/*
* Write out a minimal config.
* All values that has default values are skipped as this is redundant.
*/
int conf_write_defconfig(const char *filename)
{
struct symbol *sym;
struct menu *menu;
FILE *out;
out = fopen(filename, "w");
if (!out)
return 1;
sym_clear_all_valid();
/* Traverse all menus to find all relevant symbols */
menu = rootmenu.list;
while (menu != NULL)
{
sym = menu->sym;
if (sym == NULL) {
if (!menu_is_visible(menu))
goto next_menu;
} else if (!sym_is_choice(sym)) {
sym_calc_value(sym);
if (!(sym->flags & SYMBOL_WRITE))
goto next_menu;
sym->flags &= ~SYMBOL_WRITE;
/* If we cannot change the symbol - skip */
if (!sym_is_changable(sym))
goto next_menu;
/* If symbol equals to default value - skip */
if (strcmp(sym_get_string_value(sym), sym_get_string_default(sym)) == 0)
goto next_menu;
/*
* If symbol is a choice value and equals to the
* default for a choice - skip.
* But only if value is bool and equal to "y" and
* choice is not "optional".
* (If choice is "optional" then all values can be "n")
*/
if (sym_is_choice_value(sym)) {
struct symbol *cs;
struct symbol *ds;
cs = prop_get_symbol(sym_get_choice_prop(sym));
ds = sym_choice_default(cs);
if (!sym_is_optional(cs) && sym == ds) {
if ((sym->type == S_BOOLEAN) &&
sym_get_tristate_value(sym) == yes)
goto next_menu;
}
}
conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
}
next_menu:
if (menu->list != NULL) {
menu = menu->list;
}
else if (menu->next != NULL) {
menu = menu->next;
} else {
while ((menu = menu->parent)) {
if (menu->next != NULL) {
menu = menu->next;
break;
}
}
}
}
fclose(out);
return 0;
}
int conf_write(const char *name)
{
FILE *out;
struct symbol *sym;
struct menu *menu;
const char *basename;
const char *str;
char dirname[PATH_MAX+1], tmpname[PATH_MAX+1], newname[PATH_MAX+1];
char *env;
dirname[0] = 0;
if (name && name[0]) {
struct stat st;
char *slash;
if (!stat(name, &st) && S_ISDIR(st.st_mode)) {
strcpy(dirname, name);
strcat(dirname, "/");
basename = conf_get_configname();
} else if ((slash = strrchr(name, '/'))) {
int size = slash - name + 1;
memcpy(dirname, name, size);
dirname[size] = 0;
if (slash[1])
basename = slash + 1;
else
basename = conf_get_configname();
} else
basename = name;
} else
basename = conf_get_configname();
sprintf(newname, "%s%s", dirname, basename);
env = getenv("KCONFIG_OVERWRITECONFIG");
if (!env || !*env) {
sprintf(tmpname, "%s.tmpconfig.%d", dirname, (int)getpid());
out = fopen(tmpname, "w");
} else {
*tmpname = 0;
out = fopen(newname, "w");
}
if (!out)
return 1;
conf_write_heading(out, &kconfig_printer_cb, NULL);
if (!conf_get_changed())
sym_clear_all_valid();
menu = rootmenu.list;
while (menu) {
sym = menu->sym;
if (!sym) {
if (!menu_is_visible(menu))
goto next;
str = menu_get_prompt(menu);
fprintf(out, "\n"
"#\n"
"# %s\n"
"#\n", str);
} else if (!(sym->flags & SYMBOL_CHOICE)) {
sym_calc_value(sym);
if (!(sym->flags & SYMBOL_WRITE))
goto next;
sym->flags &= ~SYMBOL_WRITE;
conf_write_symbol(out, sym, &kconfig_printer_cb, NULL);
}
next:
if (menu->list) {
menu = menu->list;
continue;
}
if (menu->next)
menu = menu->next;
else while ((menu = menu->parent)) {
if (menu->next) {
menu = menu->next;
break;
}
}
}
fclose(out);
if (*tmpname) {
strcat(dirname, basename);
strcat(dirname, ".old");
rename(newname, dirname);
if (rename(tmpname, newname))
return 1;
}
conf_message(_("configuration written to %s"), newname);
sym_set_change_count(0);
return 0;
}
static int conf_split_config(void)
{
const char *name;
char path[PATH_MAX+1];
char *s, *d, c;
struct symbol *sym;
struct stat sb;
int res, i, fd;
name = conf_get_autoconfig_name();
conf_read_simple(name, S_DEF_AUTO);
if (chdir("include/config"))
return 1;
res = 0;
for_all_symbols(i, sym) {
sym_calc_value(sym);
if ((sym->flags & SYMBOL_AUTO) || !sym->name)
continue;
if (sym->flags & SYMBOL_WRITE) {
if (sym->flags & SYMBOL_DEF_AUTO) {
/*
* symbol has old and new value,
* so compare them...
*/
switch (sym->type) {
case S_BOOLEAN:
case S_TRISTATE:
if (sym_get_tristate_value(sym) ==
sym->def[S_DEF_AUTO].tri)
continue;
break;
case S_STRING:
case S_HEX:
case S_INT:
if (!strcmp(sym_get_string_value(sym),
sym->def[S_DEF_AUTO].val))
continue;
break;
default:
break;
}
} else {
/*
* If there is no old value, only 'no' (unset)
* is allowed as new value.
*/
switch (sym->type) {
case S_BOOLEAN:
case S_TRISTATE:
if (sym_get_tristate_value(sym) == no)
continue;
break;
default:
break;
}
}
} else if (!(sym->flags & SYMBOL_DEF_AUTO))
/* There is neither an old nor a new value. */
continue;
/* else
* There is an old value, but no new value ('no' (unset)
* isn't saved in auto.conf, so the old value is always
* different from 'no').
*/
/* Replace all '_' and append ".h" */
s = sym->name;
d = path;
while ((c = *s++)) {
c = tolower(c);
*d++ = (c == '_') ? '/' : c;
}
strcpy(d, ".h");
/* Assume directory path already exists. */
fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd == -1) {
if (errno != ENOENT) {
res = 1;
break;
}
/*
* Create directory components,
* unless they exist already.
*/
d = path;
while ((d = strchr(d, '/'))) {
*d = 0;
if (stat(path, &sb) && mkdir(path, 0755)) {
res = 1;
goto out;
}
*d++ = '/';
}
/* Try it again. */
fd = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0644);
if (fd == -1) {
res = 1;
break;
}
}
close(fd);
}
out:
if (chdir("../.."))
return 1;
return res;
}
int conf_write_autoconf(void)
{
struct symbol *sym;
const char *name;
FILE *out, *tristate, *out_h;
int i;
sym_clear_all_valid();
file_write_dep("include/config/auto.conf.cmd");
if (conf_split_config())
return 1;
out = fopen(".tmpconfig", "w");
if (!out)
return 1;
tristate = fopen(".tmpconfig_tristate", "w");
if (!tristate) {
fclose(out);
return 1;
}
out_h = fopen(".tmpconfig.h", "w");
if (!out_h) {
fclose(out);
fclose(tristate);
return 1;
}
conf_write_heading(out, &kconfig_printer_cb, NULL);
conf_write_heading(tristate, &tristate_printer_cb, NULL);
conf_write_heading(out_h, &header_printer_cb, NULL);
for_all_symbols(i, sym) {
sym_calc_value(sym);
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);
conf_write_symbol(out_h, sym, &header_printer_cb, NULL);
}
fclose(out);
fclose(tristate);
fclose(out_h);
name = getenv("KCONFIG_AUTOHEADER");
if (!name)
name = "include/generated/autoconf.h";
if (rename(".tmpconfig.h", name))
return 1;
name = getenv("KCONFIG_TRISTATE");
if (!name)
name = "include/config/tristate.conf";
if (rename(".tmpconfig_tristate", name))
return 1;
name = conf_get_autoconfig_name();
/*
* This must be the last step, kbuild has a dependency on auto.conf
* and this marks the successful completion of the previous steps.
*/
if (rename(".tmpconfig", name))
return 1;
return 0;
}
static int sym_change_count;
static void (*conf_changed_callback)(void);
void sym_set_change_count(int count)
{
int _sym_change_count = sym_change_count;
sym_change_count = count;
if (conf_changed_callback &&
(bool)_sym_change_count != (bool)count)
conf_changed_callback();
}
void sym_add_change_count(int count)
{
sym_set_change_count(count + sym_change_count);
}
bool conf_get_changed(void)
{
return sym_change_count;
}
void conf_set_changed_callback(void (*fn)(void))
{
conf_changed_callback = fn;
}
static bool randomize_choice_values(struct symbol *csym)
{
struct property *prop;
struct symbol *sym;
struct expr *e;
int cnt, def;
/*
* If choice is mod then we may have more items selected
* and if no then no-one.
* In both cases stop.
*/
if (csym->curr.tri != yes)
return false;
prop = sym_get_choice_prop(csym);
/* count entries in choice block */
cnt = 0;
expr_list_for_each_sym(prop->expr, e, sym)
cnt++;
/*
* find a random value and set it to yes,
* set the rest to no so we have only one set
*/
def = (rand() % cnt);
cnt = 0;
expr_list_for_each_sym(prop->expr, e, sym) {
if (def == cnt++) {
sym->def[S_DEF_USER].tri = yes;
csym->def[S_DEF_USER].val = sym;
}
else {
sym->def[S_DEF_USER].tri = no;
}
sym->flags |= SYMBOL_DEF_USER;
/* clear VALID to get value calculated */
sym->flags &= ~SYMBOL_VALID;
}
csym->flags |= SYMBOL_DEF_USER;
/* clear VALID to get value calculated */
csym->flags &= ~(SYMBOL_VALID);
return true;
}
void set_all_choice_values(struct symbol *csym)
{
struct property *prop;
struct symbol *sym;
struct expr *e;
prop = sym_get_choice_prop(csym);
/*
* Set all non-assinged choice values to no
*/
expr_list_for_each_sym(prop->expr, e, sym) {
if (!sym_has_value(sym))
sym->def[S_DEF_USER].tri = no;
}
csym->flags |= SYMBOL_DEF_USER;
/* clear VALID to get value calculated */
csym->flags &= ~(SYMBOL_VALID | SYMBOL_NEED_SET_CHOICE_VALUES);
}
bool conf_set_all_new_symbols(enum conf_def_mode mode)
{
struct symbol *sym, *csym;
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 );
}
}
bool has_changed = false;
for_all_symbols(i, sym) {
if (sym_has_value(sym) || (sym->flags & SYMBOL_VALID))
continue;
switch (sym_get_type(sym)) {
case S_BOOLEAN:
case S_TRISTATE:
has_changed = true;
switch (mode) {
case def_yes:
sym->def[S_DEF_USER].tri = yes;
break;
case def_mod:
sym->def[S_DEF_USER].tri = mod;
break;
case def_no:
if (sym->flags & SYMBOL_ALLNOCONFIG_Y)
sym->def[S_DEF_USER].tri = yes;
else
sym->def[S_DEF_USER].tri = no;
break;
case def_random:
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;
}
if (!(sym_is_choice(sym) && mode == def_random))
sym->flags |= SYMBOL_DEF_USER;
break;
default:
break;
}
}
sym_clear_all_valid();
/*
* We have different type of choice blocks.
* If curr.tri equals to mod then we can select several
* choice symbols in one block.
* In this case we do nothing.
* If curr.tri equals yes then only one symbol can be
* selected in a choice block and we set it to yes,
* and the rest to no.
*/
if (mode != def_random) {
for_all_symbols(i, csym) {
if ((sym_is_choice(csym) && !sym_has_value(csym)) ||
sym_is_choice_value(csym))
csym->flags |= SYMBOL_NEED_SET_CHOICE_VALUES;
}
}
for_all_symbols(i, csym) {
if (sym_has_value(csym) || !sym_is_choice(csym))
continue;
sym_calc_value(csym);
if (mode == def_random)
has_changed = randomize_choice_values(csym);
else {
set_all_choice_values(csym);
has_changed = true;
}
}
return has_changed;
}