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perform size checks on various operations

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Signed-off-by: Tavi <tavi@divested.dev>
Co-authored-by: =?UTF-8?q?Christian=20G=C3=B6ttsche?= <cgzones@googlemail.com>
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Tavi 2025-03-22 02:54:10 -04:00
parent 7481c8857f
commit 2f06cddeb7
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46 changed files with 1166 additions and 13 deletions
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10
random.c
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@ -5,6 +5,10 @@
#include "random.h"
#include "util.h"
#if CONFIG_BLOCK_OPS_CHECK_SIZE && !defined(HAS_ARM_MTE)
#include "musl.h"
#endif
#include <sys/random.h>
static void get_random_seed(void *buf, size_t size) {
@ -65,7 +69,7 @@ void get_random_bytes(struct random_state *state, void *buf, size_t size) {
size_t remaining = RANDOM_CACHE_SIZE - state->index;
size_t copy_size = min(size, remaining);
memcpy(buf, state->cache + state->index, copy_size);
h_memcpy_internal(buf, state->cache + state->index, copy_size);
state->index += copy_size;
buf = (char *)buf + copy_size;
@ -79,7 +83,7 @@ u16 get_random_u16(struct random_state *state) {
if (remaining < sizeof(value)) {
refill(state);
}
memcpy(&value, state->cache + state->index, sizeof(value));
h_memcpy_internal(&value, state->cache + state->index, sizeof(value));
state->index += sizeof(value);
return value;
}
@ -106,7 +110,7 @@ u64 get_random_u64(struct random_state *state) {
if (remaining < sizeof(value)) {
refill(state);
}
memcpy(&value, state->cache + state->index, sizeof(value));
h_memcpy_internal(&value, state->cache + state->index, sizeof(value));
state->index += sizeof(value);
return value;
}