/usr/include/linux/random.h is in linux-libc-dev 4.9.144-3.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 | /*
* include/linux/random.h
*
* Include file for the random number generator.
*/
#ifndef _LINUX_RANDOM_H
#define _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[0];
};
/*
* Flags for getrandom(2)
*
* GRND_NONBLOCK Don't block and return EAGAIN instead
* GRND_RANDOM Use the /dev/random pool instead of /dev/urandom
*/
#define GRND_NONBLOCK 0x0001
#define GRND_RANDOM 0x0002
#endif /* _LINUX_RANDOM_H */
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