/**
* Use a TDB to store an incrementing random seed.
*
* Initialised to the current pid, the very first time Samba starts,
* and incremented by one each time it is needed.
*
* @note Not called by systems with a working /dev/urandom.
*/
static void get_rand_seed(struct tdb_wrap *secretsdb, int *new_seed)
{
*new_seed = getpid();
if (secretsdb != NULL) {
tdb_change_int32_atomic(secretsdb->tdb, "INFO/random_seed", new_seed, 1);
}
}
void reset_globals_after_fork(void)
{
unsigned char dummy;
/*
* Increment the global seed value to ensure every smbd starts
* with a new random seed.
*/
if (tdb) {
int32 initial_val = sys_getpid();
tdb_change_int32_atomic(tdb, "INFO/random_seed", (int *)&initial_val, 1);
set_rand_reseed_data((unsigned char *)&initial_val, sizeof(initial_val));
}
/*
* Re-seed the random crypto generator, so all smbd's
* started from the same parent won't generate the same
* sequence.
*/
generate_random_buffer( &dummy, 1, True);
}
