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kconfig: split randconfig setup code into set_randconfig_seed()

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This code is too big to be placed in the switch statement.

Move the code into a new helper function. I slightly refactor the code
without changing the behavior.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Masahiro Yamada 2021-03-14 04:48:24 +09:00
parent 1e28eed176
commit 89145649b0
1 changed files with 31 additions and 23 deletions
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54
scripts/kconfig/conf.c
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@ -82,6 +82,36 @@ static void xfgets(char *str, int size, FILE *in)
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 int conf_askvalue(struct symbol *sym, const char *def)
{
if (!sym_has_value(sym))
@ -515,30 +545,8 @@ int main(int ac, char **av)
defconfig_file = optarg;
break;
case randconfig:
{
struct timeval now;
unsigned int seed;
char *seed_env;
/*
* Use microseconds derived seed,
* compensate for systems where it may be zero
*/
gettimeofday(&now, NULL);
seed = (unsigned int)((now.tv_sec + 1) * (now.tv_usec + 1));
seed_env = getenv("KCONFIG_SEED");
if( seed_env && *seed_env ) {
char *endp;
int tmp = (int)strtol(seed_env, &endp, 0);
if (*endp == '\0') {
seed = tmp;
}
}
fprintf( stderr, "KCONFIG_SEED=0x%X\n", seed );
srand(seed);
set_randconfig_seed();
break;
}
case oldaskconfig:
case oldconfig:
case allnoconfig: