diff options
Diffstat (limited to 'include/uapi/linux/random.h')
| -rw-r--r-- | include/uapi/linux/random.h | 37 |
1 files changed, 30 insertions, 7 deletions
diff --git a/include/uapi/linux/random.h b/include/uapi/linux/random.h index 7471b5b3b8ba..1dd047ec98a1 100644 --- a/include/uapi/linux/random.h +++ b/include/uapi/linux/random.h @@ -1,3 +1,4 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ /* * include/linux/random.h * @@ -19,7 +20,7 @@ /* Add to (or subtract from) the entropy count. (Superuser only.) */ #define RNDADDTOENTCNT _IOW( 'R', 0x01, int ) -/* Get the contents of the entropy pool. (Superuser only.) */ +/* Get the contents of the entropy pool. (Superuser only.) (Removed in 2.6.9-rc2.) */ #define RNDGETPOOL _IOR( 'R', 0x02, int [2] ) /* @@ -34,17 +35,39 @@ /* Clear the entropy pool and associated counters. (Superuser only.) */ #define RNDCLEARPOOL _IO( 'R', 0x06 ) +/* Reseed CRNG. (Superuser only.) */ +#define RNDRESEEDCRNG _IO( 'R', 0x07 ) + struct rand_pool_info { int entropy_count; int buf_size; - __u32 buf[0]; -}; - -struct rnd_state { - __u32 s1, s2, s3; + __u32 buf[]; }; -/* Exported functions */ +/* + * Flags for getrandom(2) + * + * GRND_NONBLOCK Don't block and return EAGAIN instead + * GRND_RANDOM No effect + * GRND_INSECURE Return non-cryptographic random bytes + */ +#define GRND_NONBLOCK 0x0001 +#define GRND_RANDOM 0x0002 +#define GRND_INSECURE 0x0004 +/** + * struct vgetrandom_opaque_params - arguments for allocating memory for vgetrandom + * + * @size_per_opaque_state: Size of each state that is to be passed to vgetrandom(). + * @mmap_prot: Value of the prot argument in mmap(2). + * @mmap_flags: Value of the flags argument in mmap(2). + * @reserved: Reserved for future use. + */ +struct vgetrandom_opaque_params { + __u32 size_of_opaque_state; + __u32 mmap_prot; + __u32 mmap_flags; + __u32 reserved[13]; +}; #endif /* _UAPI_LINUX_RANDOM_H */ |