diff options
Diffstat (limited to 'shared/systemd/src/basic/random-util.h')
| -rw-r--r-- | shared/systemd/src/basic/random-util.h | 42 |
1 files changed, 0 insertions, 42 deletions
diff --git a/shared/systemd/src/basic/random-util.h b/shared/systemd/src/basic/random-util.h deleted file mode 100644 index f661fc09..00000000 --- a/shared/systemd/src/basic/random-util.h +++ /dev/null @@ -1,42 +0,0 @@ -/* SPDX-License-Identifier: LGPL-2.1-or-later */ -#pragma once - -#include <stdbool.h> -#include <stddef.h> -#include <stdint.h> - -typedef enum RandomFlags { - RANDOM_EXTEND_WITH_PSEUDO = 1 << 0, /* If we can't get enough genuine randomness, but some, fill up the rest with pseudo-randomness */ - RANDOM_BLOCK = 1 << 1, /* Rather block than return crap randomness (only if the kernel supports that) */ - RANDOM_MAY_FAIL = 1 << 2, /* If we can't get any randomness at all, return early with -ENODATA */ - RANDOM_ALLOW_RDRAND = 1 << 3, /* Allow usage of the CPU RNG */ - RANDOM_ALLOW_INSECURE = 1 << 4, /* Allow usage of GRND_INSECURE flag to kernel's getrandom() API */ -} RandomFlags; - -int genuine_random_bytes(void *p, size_t n, RandomFlags flags); /* returns "genuine" randomness, optionally filled up with pseudo random, if not enough is available */ -void pseudo_random_bytes(void *p, size_t n); /* returns only pseudo-randommess (but possibly seeded from something better) */ -void random_bytes(void *p, size_t n); /* returns genuine randomness if cheaply available, and pseudo randomness if not. */ - -void initialize_srand(void); - -static inline uint64_t random_u64(void) { - uint64_t u; - random_bytes(&u, sizeof(u)); - return u; -} - -static inline uint32_t random_u32(void) { - uint32_t u; - random_bytes(&u, sizeof(u)); - return u; -} - -int rdrand(unsigned long *ret); - -/* Some limits on the pool sizes when we deal with the kernel random pool */ -#define RANDOM_POOL_SIZE_MIN 512U -#define RANDOM_POOL_SIZE_MAX (10U*1024U*1024U) - -size_t random_pool_size(void); - -int random_write_entropy(int fd, const void *seed, size_t size, bool credit); |