/*
* The first collection of entropy occurs at system boot while interrupts
- * are still turned off. Here we push in RDSEED, a timestamp, and utsname().
- * Depending on the above configuration knob, RDSEED may be considered
- * sufficient for initialization. Note that much earlier setup may already
- * have pushed entropy into the input pool by the time we get here.
+ * are still turned off. Here we push in latent entropy, RDSEED, a timestamp,
+ * utsname(), and the command line. Depending on the above configuration knob,
+ * RDSEED may be considered sufficient for initialization. Note that much
+ * earlier setup may already have pushed entropy into the input pool by the
+ * time we get here.
*/
-int __init rand_initialize(void)
+int __init random_init(const char *command_line)
{
- size_t i;
ktime_t now = ktime_get_real();
- bool arch_init = true;
+ unsigned int i, arch_bytes;
unsigned long rv;
#if defined(LATENT_ENTROPY_PLUGIN)
_mix_pool_bytes(compiletime_seed, sizeof(compiletime_seed));
#endif
- for (i = 0; i < BLAKE2S_BLOCK_SIZE; i += sizeof(rv)) {
+ for (i = 0, arch_bytes = BLAKE2S_BLOCK_SIZE;
+ i < BLAKE2S_BLOCK_SIZE; i += sizeof(rv)) {
if (!arch_get_random_seed_long_early(&rv) &&
!arch_get_random_long_early(&rv)) {
rv = random_get_entropy();
- arch_init = false;
+ arch_bytes -= sizeof(rv);
}
_mix_pool_bytes(&rv, sizeof(rv));
}
_mix_pool_bytes(&now, sizeof(now));
_mix_pool_bytes(utsname(), sizeof(*(utsname())));
+ _mix_pool_bytes(command_line, strlen(command_line));
+ add_latent_entropy();
if (crng_ready())
crng_reseed();
- else if (arch_init && trust_cpu)
- credit_init_bits(BLAKE2S_BLOCK_SIZE * 8);
+ else if (trust_cpu)
+ credit_init_bits(arch_bytes * 8);
WARN_ON(register_pm_notifier(&pm_notifier));
};
/*
- * rand_initialize() is called before sysctl_init(),
- * so we cannot call register_sysctl_init() in rand_initialize()
+ * random_init() is called before sysctl_init(),
+ * so we cannot call register_sysctl_init() in random_init()
*/
static int __init random_sysctls_init(void)
{