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Differential D20318 Diff 57802 head/sys/dev/random/random_harvestq.c

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head/sys/dev/random/random_harvestq.c

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#if defined(RANDOM_LOADABLE) #if defined(RANDOM_LOADABLE)
RANDOM_CONFIG_S_LOCK(); RANDOM_CONFIG_S_LOCK();
if (p_random_alg_context) if (p_random_alg_context)
#endif #endif
p_random_alg_context->ra_event_processor(event); p_random_alg_context->ra_event_processor(event);
#if defined(RANDOM_LOADABLE) #if defined(RANDOM_LOADABLE)
RANDOM_CONFIG_S_UNLOCK(); RANDOM_CONFIG_S_UNLOCK();
#endif #endif
explicit_bzero(event, sizeof(*event));
} }
static void static void
random_kthread(void) random_kthread(void)
{ {
u_int maxloop, ring_out, i; u_int maxloop, ring_out, i;
/* /*
▲ Show 20 Lines • Show All 258 Lines • ▼ Show 20 Lines if (data != NULL && size != 0) {
count = sizeof(event.he_entropy); count = sizeof(event.he_entropy);
event.he_somecounter = (uint32_t)get_cyclecount(); event.he_somecounter = (uint32_t)get_cyclecount();
event.he_size = count; event.he_size = count;
event.he_source = RANDOM_CACHED; event.he_source = RANDOM_CACHED;
event.he_destination = event.he_destination =
harvest_context.hc_destination[RANDOM_CACHED]++; harvest_context.hc_destination[RANDOM_CACHED]++;
memcpy(event.he_entropy, data + i, sizeof(event.he_entropy)); memcpy(event.he_entropy, data + i, sizeof(event.he_entropy));
random_harvestq_fast_process_event(&event); random_harvestq_fast_process_event(&event);
explicit_bzero(&event, sizeof(event));
} }
explicit_bzero(data, size); explicit_bzero(data, size);
if (bootverbose) if (bootverbose)
printf("random: read %zu bytes from preloaded cache\n", size); printf("random: read %zu bytes from preloaded cache\n", size);
} else } else
if (bootverbose) if (bootverbose)
printf("random: no preloaded entropy cache\n"); printf("random: no preloaded entropy cache\n");
} }
▲ Show 20 Lines • Show All 86 Lines • ▼ Show 20 Linesrandom_harvest_direct_(const void *entropy, u_int size, enum random_entropy_source origin)
KASSERT(origin >= RANDOM_START && origin < ENTROPYSOURCE, ("%s: origin %d invalid\n", __func__, origin)); KASSERT(origin >= RANDOM_START && origin < ENTROPYSOURCE, ("%s: origin %d invalid\n", __func__, origin));
size = MIN(size, sizeof(event.he_entropy)); size = MIN(size, sizeof(event.he_entropy));
event.he_somecounter = (uint32_t)get_cyclecount(); event.he_somecounter = (uint32_t)get_cyclecount();
event.he_size = size; event.he_size = size;
event.he_source = origin; event.he_source = origin;
event.he_destination = harvest_context.hc_destination[origin]++; event.he_destination = harvest_context.hc_destination[origin]++;
memcpy(event.he_entropy, entropy, size); memcpy(event.he_entropy, entropy, size);
random_harvestq_fast_process_event(&event); random_harvestq_fast_process_event(&event);
explicit_bzero(&event, sizeof(event));
} }
void void
random_harvest_register_source(enum random_entropy_source source) random_harvest_register_source(enum random_entropy_source source)
{ {
hc_source_mask |= (1 << source); hc_source_mask |= (1 << source);
} }
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