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58 lines
1.4 KiB
58 lines
1.4 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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/* |
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* include/linux/random.h |
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* |
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* Include file for the random number generator. |
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*/ |
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#ifndef _UAPI_LINUX_RANDOM_H |
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#define _UAPI_LINUX_RANDOM_H |
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#include <linux/types.h> |
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#include <linux/ioctl.h> |
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#include <linux/irqnr.h> |
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/* ioctl()'s for the random number generator */ |
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/* Get the entropy count. */ |
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#define RNDGETENTCNT _IOR( 'R', 0x00, int ) |
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/* Add to (or subtract from) the entropy count. (Superuser only.) */ |
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#define RNDADDTOENTCNT _IOW( 'R', 0x01, int ) |
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/* Get the contents of the entropy pool. (Superuser only.) */ |
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#define RNDGETPOOL _IOR( 'R', 0x02, int [2] ) |
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/* |
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* Write bytes into the entropy pool and add to the entropy count. |
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* (Superuser only.) |
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*/ |
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#define RNDADDENTROPY _IOW( 'R', 0x03, int [2] ) |
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/* Clear entropy count to 0. (Superuser only.) */ |
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#define RNDZAPENTCNT _IO( 'R', 0x04 ) |
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/* Clear the entropy pool and associated counters. (Superuser only.) */ |
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#define RNDCLEARPOOL _IO( 'R', 0x06 ) |
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/* Reseed CRNG. (Superuser only.) */ |
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#define RNDRESEEDCRNG _IO( 'R', 0x07 ) |
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struct rand_pool_info { |
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int entropy_count; |
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int buf_size; |
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__u32 buf[0]; |
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}; |
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/* |
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* Flags for getrandom(2) |
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* |
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* GRND_NONBLOCK Don't block and return EAGAIN instead |
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* GRND_RANDOM No effect |
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* GRND_INSECURE Return non-cryptographic random bytes |
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*/ |
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#define GRND_NONBLOCK 0x0001 |
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#define GRND_RANDOM 0x0002 |
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#define GRND_INSECURE 0x0004 |
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#endif /* _UAPI_LINUX_RANDOM_H */
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