Current File : //usr/lib/modules/6.8.0-45-generic/build/scripts/kconfig/conf.c
// SPDX-License-Identifier: GPL-2.0
/*
* Copyright (C) 2002 Roman Zippel <zippel@linux-m68k.org>
*/
#include <ctype.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <getopt.h>
#include <sys/time.h>
#include <errno.h>
#include "lkc.h"
static void conf(struct menu *menu);
static void check_conf(struct menu *menu);
enum input_mode {
oldaskconfig,
syncconfig,
oldconfig,
allnoconfig,
allyesconfig,
allmodconfig,
alldefconfig,
randconfig,
defconfig,
savedefconfig,
listnewconfig,
helpnewconfig,
olddefconfig,
yes2modconfig,
mod2yesconfig,
mod2noconfig,
};
static enum input_mode input_mode = oldaskconfig;
static int input_mode_opt;
static int indent = 1;
static int tty_stdio;
static int sync_kconfig;
static int conf_cnt;
static char line[PATH_MAX];
static struct menu *rootEntry;
static void print_help(struct menu *menu)
{
struct gstr help = str_new();
menu_get_ext_help(menu, &help);
printf("\n%s\n", str_get(&help));
str_free(&help);
}
static void strip(char *str)
{
char *p = str;
int l;
while ((isspace(*p)))
p++;
l = strlen(p);
if (p != str)
memmove(str, p, l + 1);
if (!l)
return;
p = str + l - 1;
while ((isspace(*p)))
*p-- = 0;
}
/* Helper function to facilitate fgets() by Jean Sacren. */
static void xfgets(char *str, int size, FILE *in)
{
if (!fgets(str, size, in))
fprintf(stderr, "\nError in reading or end of file.\n");
if (!tty_stdio)
printf("%s", str);
}
static void set_randconfig_seed(void)
{
unsigned int seed;
char *env;
bool seed_set = false;
env = getenv("KCONFIG_SEED");
if (env && *env) {
char *endp;
seed = strtol(env, &endp, 0);
if (*endp == '\0')
seed_set = true;
}
if (!seed_set) {
struct timeval now;
/*
* Use microseconds derived seed, compensate for systems where it may
* be zero.
*/
gettimeofday(&now, NULL);
seed = (now.tv_sec + 1) * (now.tv_usec + 1);
}
printf("KCONFIG_SEED=0x%X\n", seed);
srand(seed);
}
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;
}
enum conf_def_mode {
def_default,
def_yes,
def_mod,
def_no,
def_random
};
static bool conf_set_all_new_symbols(enum conf_def_mode mode)
{
struct symbol *sym, *csym;
int i, cnt;
/*
* can't go as the default in switch-case below, otherwise gcc whines
* about -Wmaybe-uninitialized
*/
int pby = 50; /* probability of bool = y */
int pty = 33; /* probability of tristate = y */
int ptm = 33; /* probability of tristate = m */
bool has_changed = false;
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) || 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:
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;
}
static void conf_rewrite_tristates(tristate old_val, tristate new_val)
{
struct symbol *sym;
int i;
for_all_symbols(i, sym) {
if (sym_get_type(sym) == S_TRISTATE &&
sym->def[S_DEF_USER].tri == old_val)
sym->def[S_DEF_USER].tri = new_val;
}
sym_clear_all_valid();
}
static int conf_askvalue(struct symbol *sym, const char *def)
{
if (!sym_has_value(sym))
printf("(NEW) ");
line[0] = '\n';
line[1] = 0;
if (!sym_is_changeable(sym)) {
printf("%s\n", def);
line[0] = '\n';
line[1] = 0;
return 0;
}
switch (input_mode) {
case oldconfig:
case syncconfig:
if (sym_has_value(sym)) {
printf("%s\n", def);
return 0;
}
/* fall through */
default:
fflush(stdout);
xfgets(line, sizeof(line), stdin);
break;
}
return 1;
}
static int conf_string(struct menu *menu)
{
struct symbol *sym = menu->sym;
const char *def;
while (1) {
printf("%*s%s ", indent - 1, "", menu->prompt->text);
printf("(%s) ", sym->name);
def = sym_get_string_value(sym);
if (def)
printf("[%s] ", def);
if (!conf_askvalue(sym, def))
return 0;
switch (line[0]) {
case '\n':
break;
case '?':
/* print help */
if (line[1] == '\n') {
print_help(menu);
def = NULL;
break;
}
/* fall through */
default:
line[strlen(line)-1] = 0;
def = line;
}
if (def && sym_set_string_value(sym, def))
return 0;
}
}
static int conf_sym(struct menu *menu)
{
struct symbol *sym = menu->sym;
tristate oldval, newval;
while (1) {
printf("%*s%s ", indent - 1, "", menu->prompt->text);
if (sym->name)
printf("(%s) ", sym->name);
putchar('[');
oldval = sym_get_tristate_value(sym);
switch (oldval) {
case no:
putchar('N');
break;
case mod:
putchar('M');
break;
case yes:
putchar('Y');
break;
}
if (oldval != no && sym_tristate_within_range(sym, no))
printf("/n");
if (oldval != mod && sym_tristate_within_range(sym, mod))
printf("/m");
if (oldval != yes && sym_tristate_within_range(sym, yes))
printf("/y");
printf("/?] ");
if (!conf_askvalue(sym, sym_get_string_value(sym)))
return 0;
strip(line);
switch (line[0]) {
case 'n':
case 'N':
newval = no;
if (!line[1] || !strcmp(&line[1], "o"))
break;
continue;
case 'm':
case 'M':
newval = mod;
if (!line[1])
break;
continue;
case 'y':
case 'Y':
newval = yes;
if (!line[1] || !strcmp(&line[1], "es"))
break;
continue;
case 0:
newval = oldval;
break;
case '?':
goto help;
default:
continue;
}
if (sym_set_tristate_value(sym, newval))
return 0;
help:
print_help(menu);
}
}
static int conf_choice(struct menu *menu)
{
struct symbol *sym, *def_sym;
struct menu *child;
bool is_new;
sym = menu->sym;
is_new = !sym_has_value(sym);
if (sym_is_changeable(sym)) {
conf_sym(menu);
sym_calc_value(sym);
switch (sym_get_tristate_value(sym)) {
case no:
return 1;
case mod:
return 0;
case yes:
break;
}
} else {
switch (sym_get_tristate_value(sym)) {
case no:
return 1;
case mod:
printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
return 0;
case yes:
break;
}
}
while (1) {
int cnt, def;
printf("%*s%s\n", indent - 1, "", menu_get_prompt(menu));
def_sym = sym_get_choice_value(sym);
cnt = def = 0;
line[0] = 0;
for (child = menu->list; child; child = child->next) {
if (!menu_is_visible(child))
continue;
if (!child->sym) {
printf("%*c %s\n", indent, '*', menu_get_prompt(child));
continue;
}
cnt++;
if (child->sym == def_sym) {
def = cnt;
printf("%*c", indent, '>');
} else
printf("%*c", indent, ' ');
printf(" %d. %s", cnt, menu_get_prompt(child));
if (child->sym->name)
printf(" (%s)", child->sym->name);
if (!sym_has_value(child->sym))
printf(" (NEW)");
printf("\n");
}
printf("%*schoice", indent - 1, "");
if (cnt == 1) {
printf("[1]: 1\n");
goto conf_childs;
}
printf("[1-%d?]: ", cnt);
switch (input_mode) {
case oldconfig:
case syncconfig:
if (!is_new) {
cnt = def;
printf("%d\n", cnt);
break;
}
/* fall through */
case oldaskconfig:
fflush(stdout);
xfgets(line, sizeof(line), stdin);
strip(line);
if (line[0] == '?') {
print_help(menu);
continue;
}
if (!line[0])
cnt = def;
else if (isdigit(line[0]))
cnt = atoi(line);
else
continue;
break;
default:
break;
}
conf_childs:
for (child = menu->list; child; child = child->next) {
if (!child->sym || !menu_is_visible(child))
continue;
if (!--cnt)
break;
}
if (!child)
continue;
if (line[0] && line[strlen(line) - 1] == '?') {
print_help(child);
continue;
}
sym_set_tristate_value(child->sym, yes);
for (child = child->list; child; child = child->next) {
indent += 2;
conf(child);
indent -= 2;
}
return 1;
}
}
static void conf(struct menu *menu)
{
struct symbol *sym;
struct property *prop;
struct menu *child;
if (!menu_is_visible(menu))
return;
sym = menu->sym;
prop = menu->prompt;
if (prop) {
const char *prompt;
switch (prop->type) {
case P_MENU:
/*
* Except in oldaskconfig mode, we show only menus that
* contain new symbols.
*/
if (input_mode != oldaskconfig && rootEntry != menu) {
check_conf(menu);
return;
}
/* fall through */
case P_COMMENT:
prompt = menu_get_prompt(menu);
if (prompt)
printf("%*c\n%*c %s\n%*c\n",
indent, '*',
indent, '*', prompt,
indent, '*');
default:
;
}
}
if (!sym)
goto conf_childs;
if (sym_is_choice(sym)) {
conf_choice(menu);
if (sym->curr.tri != mod)
return;
goto conf_childs;
}
switch (sym->type) {
case S_INT:
case S_HEX:
case S_STRING:
conf_string(menu);
break;
default:
conf_sym(menu);
break;
}
conf_childs:
if (sym)
indent += 2;
for (child = menu->list; child; child = child->next)
conf(child);
if (sym)
indent -= 2;
}
static void check_conf(struct menu *menu)
{
struct symbol *sym;
struct menu *child;
if (!menu_is_visible(menu))
return;
sym = menu->sym;
if (sym && !sym_has_value(sym) &&
(sym_is_changeable(sym) ||
(sym_is_choice(sym) && sym_get_tristate_value(sym) == yes))) {
switch (input_mode) {
case listnewconfig:
if (sym->name)
print_symbol_for_listconfig(sym);
break;
case helpnewconfig:
printf("-----\n");
print_help(menu);
printf("-----\n");
break;
default:
if (!conf_cnt++)
printf("*\n* Restart config...\n*\n");
rootEntry = menu_get_parent_menu(menu);
conf(rootEntry);
break;
}
}
for (child = menu->list; child; child = child->next)
check_conf(child);
}
static const struct option long_opts[] = {
{"help", no_argument, NULL, 'h'},
{"silent", no_argument, NULL, 's'},
{"oldaskconfig", no_argument, &input_mode_opt, oldaskconfig},
{"oldconfig", no_argument, &input_mode_opt, oldconfig},
{"syncconfig", no_argument, &input_mode_opt, syncconfig},
{"defconfig", required_argument, &input_mode_opt, defconfig},
{"savedefconfig", required_argument, &input_mode_opt, savedefconfig},
{"allnoconfig", no_argument, &input_mode_opt, allnoconfig},
{"allyesconfig", no_argument, &input_mode_opt, allyesconfig},
{"allmodconfig", no_argument, &input_mode_opt, allmodconfig},
{"alldefconfig", no_argument, &input_mode_opt, alldefconfig},
{"randconfig", no_argument, &input_mode_opt, randconfig},
{"listnewconfig", no_argument, &input_mode_opt, listnewconfig},
{"helpnewconfig", no_argument, &input_mode_opt, helpnewconfig},
{"olddefconfig", no_argument, &input_mode_opt, olddefconfig},
{"yes2modconfig", no_argument, &input_mode_opt, yes2modconfig},
{"mod2yesconfig", no_argument, &input_mode_opt, mod2yesconfig},
{"mod2noconfig", no_argument, &input_mode_opt, mod2noconfig},
{NULL, 0, NULL, 0}
};
static void conf_usage(const char *progname)
{
printf("Usage: %s [options] <kconfig-file>\n", progname);
printf("\n");
printf("Generic options:\n");
printf(" -h, --help Print this message and exit.\n");
printf(" -s, --silent Do not print log.\n");
printf("\n");
printf("Mode options:\n");
printf(" --listnewconfig List new options\n");
printf(" --helpnewconfig List new options and help text\n");
printf(" --oldaskconfig Start a new configuration using a line-oriented program\n");
printf(" --oldconfig Update a configuration using a provided .config as base\n");
printf(" --syncconfig Similar to oldconfig but generates configuration in\n"
" include/{generated/,config/}\n");
printf(" --olddefconfig Same as oldconfig but sets new symbols to their default value\n");
printf(" --defconfig <file> New config with default defined in <file>\n");
printf(" --savedefconfig <file> Save the minimal current configuration to <file>\n");
printf(" --allnoconfig New config where all options are answered with no\n");
printf(" --allyesconfig New config where all options are answered with yes\n");
printf(" --allmodconfig New config where all options are answered with mod\n");
printf(" --alldefconfig New config with all symbols set to default\n");
printf(" --randconfig New config with random answer to all options\n");
printf(" --yes2modconfig Change answers from yes to mod if possible\n");
printf(" --mod2yesconfig Change answers from mod to yes if possible\n");
printf(" --mod2noconfig Change answers from mod to no if possible\n");
printf(" (If none of the above is given, --oldaskconfig is the default)\n");
}
int main(int ac, char **av)
{
const char *progname = av[0];
int opt;
const char *name, *defconfig_file = NULL /* gcc uninit */;
int no_conf_write = 0;
tty_stdio = isatty(0) && isatty(1);
while ((opt = getopt_long(ac, av, "hs", long_opts, NULL)) != -1) {
switch (opt) {
case 'h':
conf_usage(progname);
exit(1);
break;
case 's':
conf_set_message_callback(NULL);
break;
case 0:
input_mode = input_mode_opt;
switch (input_mode) {
case syncconfig:
/*
* syncconfig is invoked during the build stage.
* Suppress distracting
* "configuration written to ..."
*/
conf_set_message_callback(NULL);
sync_kconfig = 1;
break;
case defconfig:
case savedefconfig:
defconfig_file = optarg;
break;
case randconfig:
set_randconfig_seed();
break;
default:
break;
}
default:
break;
}
}
if (ac == optind) {
fprintf(stderr, "%s: Kconfig file missing\n", av[0]);
conf_usage(progname);
exit(1);
}
conf_parse(av[optind]);
//zconfdump(stdout);
switch (input_mode) {
case defconfig:
if (conf_read(defconfig_file)) {
fprintf(stderr,
"***\n"
"*** Can't find default configuration \"%s\"!\n"
"***\n",
defconfig_file);
exit(1);
}
break;
case savedefconfig:
case syncconfig:
case oldaskconfig:
case oldconfig:
case listnewconfig:
case helpnewconfig:
case olddefconfig:
case yes2modconfig:
case mod2yesconfig:
case mod2noconfig:
conf_read(NULL);
break;
case allnoconfig:
case allyesconfig:
case allmodconfig:
case alldefconfig:
case randconfig:
name = getenv("KCONFIG_ALLCONFIG");
if (!name)
break;
if ((strcmp(name, "") != 0) && (strcmp(name, "1") != 0)) {
if (conf_read_simple(name, S_DEF_USER)) {
fprintf(stderr,
"*** Can't read seed configuration \"%s\"!\n",
name);
exit(1);
}
break;
}
switch (input_mode) {
case allnoconfig: name = "allno.config"; break;
case allyesconfig: name = "allyes.config"; break;
case allmodconfig: name = "allmod.config"; break;
case alldefconfig: name = "alldef.config"; break;
case randconfig: name = "allrandom.config"; break;
default: break;
}
if (conf_read_simple(name, S_DEF_USER) &&
conf_read_simple("all.config", S_DEF_USER)) {
fprintf(stderr,
"*** KCONFIG_ALLCONFIG set, but no \"%s\" or \"all.config\" file found\n",
name);
exit(1);
}
break;
default:
break;
}
if (conf_errors())
exit(1);
if (sync_kconfig) {
name = getenv("KCONFIG_NOSILENTUPDATE");
if (name && *name) {
if (conf_get_changed()) {
fprintf(stderr,
"\n*** The configuration requires explicit update.\n\n");
return 1;
}
no_conf_write = 1;
}
}
switch (input_mode) {
case allnoconfig:
conf_set_all_new_symbols(def_no);
break;
case allyesconfig:
conf_set_all_new_symbols(def_yes);
break;
case allmodconfig:
conf_set_all_new_symbols(def_mod);
break;
case alldefconfig:
conf_set_all_new_symbols(def_default);
break;
case randconfig:
/* Really nothing to do in this loop */
while (conf_set_all_new_symbols(def_random)) ;
break;
case defconfig:
conf_set_all_new_symbols(def_default);
break;
case savedefconfig:
break;
case yes2modconfig:
conf_rewrite_tristates(yes, mod);
break;
case mod2yesconfig:
conf_rewrite_tristates(mod, yes);
break;
case mod2noconfig:
conf_rewrite_tristates(mod, no);
break;
case oldaskconfig:
rootEntry = &rootmenu;
conf(&rootmenu);
input_mode = oldconfig;
/* fall through */
case oldconfig:
case listnewconfig:
case helpnewconfig:
case syncconfig:
/* Update until a loop caused no more changes */
do {
conf_cnt = 0;
check_conf(&rootmenu);
} while (conf_cnt);
break;
case olddefconfig:
default:
break;
}
if (sym_dep_errors())
exit(1);
if (input_mode == savedefconfig) {
if (conf_write_defconfig(defconfig_file)) {
fprintf(stderr, "n*** Error while saving defconfig to: %s\n\n",
defconfig_file);
return 1;
}
} else if (input_mode != listnewconfig && input_mode != helpnewconfig) {
if (!no_conf_write && conf_write(NULL)) {
fprintf(stderr, "\n*** Error during writing of the configuration.\n\n");
exit(1);
}
/*
* Create auto.conf if it does not exist.
* This prevents GNU Make 4.1 or older from emitting
* "include/config/auto.conf: No such file or directory"
* in the top-level Makefile
*
* syncconfig always creates or updates auto.conf because it is
* used during the build.
*/
if (conf_write_autoconf(sync_kconfig) && sync_kconfig) {
fprintf(stderr,
"\n*** Error during sync of the configuration.\n\n");
return 1;
}
}
return 0;
}
Mini Shell