diff options
Diffstat (limited to 'include/uapi/linux/random.h')
| -rw-r--r-- | include/uapi/linux/random.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/include/uapi/linux/random.h b/include/uapi/linux/random.h new file mode 100644 index 000000000..e744c2358 --- /dev/null +++ b/include/uapi/linux/random.h @@ -0,0 +1,58 @@ +/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ +/* + * include/linux/random.h + * + * Include file for the random number generator. + */ + +#ifndef _UAPI_LINUX_RANDOM_H +#define _UAPI_LINUX_RANDOM_H + +#include <linux/types.h> +#include <linux/ioctl.h> +#include <linux/irqnr.h> + +/* ioctl()'s for the random number generator */ + +/* Get the entropy count. */ +#define RNDGETENTCNT _IOR( 'R', 0x00, int ) + +/* 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.) */ +#define RNDGETPOOL _IOR( 'R', 0x02, int [2] ) + +/* + * Write bytes into the entropy pool and add to the entropy count. + * (Superuser only.) + */ +#define RNDADDENTROPY _IOW( 'R', 0x03, int [2] ) + +/* Clear entropy count to 0. (Superuser only.) */ +#define RNDZAPENTCNT _IO( 'R', 0x04 ) + +/* 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[]; +}; + +/* + * 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 + +#endif /* _UAPI_LINUX_RANDOM_H */ |