1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux <<
2 /* 1 /*
3 * include/linux/random.h 2 * include/linux/random.h
4 * 3 *
5 * Include file for the random number generato 4 * Include file for the random number generator.
6 */ 5 */
7 6
8 #ifndef _UAPI_LINUX_RANDOM_H 7 #ifndef _UAPI_LINUX_RANDOM_H
9 #define _UAPI_LINUX_RANDOM_H 8 #define _UAPI_LINUX_RANDOM_H
10 9
11 #include <linux/types.h> 10 #include <linux/types.h>
12 #include <linux/ioctl.h> 11 #include <linux/ioctl.h>
13 #include <linux/irqnr.h> 12 #include <linux/irqnr.h>
14 13
15 /* ioctl()'s for the random number generator * 14 /* ioctl()'s for the random number generator */
16 15
17 /* Get the entropy count. */ 16 /* Get the entropy count. */
18 #define RNDGETENTCNT _IOR( 'R', 0x00, int ) 17 #define RNDGETENTCNT _IOR( 'R', 0x00, int )
19 18
20 /* Add to (or subtract from) the entropy count 19 /* Add to (or subtract from) the entropy count. (Superuser only.) */
21 #define RNDADDTOENTCNT _IOW( 'R', 0x01, int ) 20 #define RNDADDTOENTCNT _IOW( 'R', 0x01, int )
22 21
23 /* Get the contents of the entropy pool. (Sup !! 22 /* Get the contents of the entropy pool. (Superuser only.) */
24 #define RNDGETPOOL _IOR( 'R', 0x02, int [ 23 #define RNDGETPOOL _IOR( 'R', 0x02, int [2] )
25 24
26 /* 25 /*
27 * Write bytes into the entropy pool and add t 26 * Write bytes into the entropy pool and add to the entropy count.
28 * (Superuser only.) 27 * (Superuser only.)
29 */ 28 */
30 #define RNDADDENTROPY _IOW( 'R', 0x03, int [ 29 #define RNDADDENTROPY _IOW( 'R', 0x03, int [2] )
31 30
32 /* Clear entropy count to 0. (Superuser only. 31 /* Clear entropy count to 0. (Superuser only.) */
33 #define RNDZAPENTCNT _IO( 'R', 0x04 ) 32 #define RNDZAPENTCNT _IO( 'R', 0x04 )
34 33
35 /* Clear the entropy pool and associated count 34 /* Clear the entropy pool and associated counters. (Superuser only.) */
36 #define RNDCLEARPOOL _IO( 'R', 0x06 ) 35 #define RNDCLEARPOOL _IO( 'R', 0x06 )
37 36
38 /* Reseed CRNG. (Superuser only.) */ <<
39 #define RNDRESEEDCRNG _IO( 'R', 0x07 ) <<
40 <<
41 struct rand_pool_info { 37 struct rand_pool_info {
42 int entropy_count; 38 int entropy_count;
43 int buf_size; 39 int buf_size;
44 __u32 buf[]; !! 40 __u32 buf[0];
45 }; 41 };
46 42
47 /* 43 /*
48 * Flags for getrandom(2) 44 * Flags for getrandom(2)
49 * 45 *
50 * GRND_NONBLOCK Don't block and return 46 * GRND_NONBLOCK Don't block and return EAGAIN instead
51 * GRND_RANDOM No effect !! 47 * GRND_RANDOM Use the /dev/random pool instead of /dev/urandom
52 * GRND_INSECURE Return non-cryptograph <<
53 */ 48 */
54 #define GRND_NONBLOCK 0x0001 49 #define GRND_NONBLOCK 0x0001
55 #define GRND_RANDOM 0x0002 50 #define GRND_RANDOM 0x0002
56 #define GRND_INSECURE 0x0004 <<
57 <<
58 /** <<
59 * struct vgetrandom_opaque_params - arguments <<
60 * <<
61 * @size_per_opaque_state: Size of each s <<
62 * @mmap_prot: Value of the p <<
63 * @mmap_flags: Value of the f <<
64 * @reserved: Reserved for f <<
65 */ <<
66 struct vgetrandom_opaque_params { <<
67 __u32 size_of_opaque_state; <<
68 __u32 mmap_prot; <<
69 __u32 mmap_flags; <<
70 __u32 reserved[13]; <<
71 }; <<
72 51
73 #endif /* _UAPI_LINUX_RANDOM_H */ 52 #endif /* _UAPI_LINUX_RANDOM_H */
74 53
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.