Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * include/linux/random.h | |
3 | * | |
4 | * Include file for the random number generator. | |
5 | */ | |
6 | ||
7 | #ifndef _LINUX_RANDOM_H | |
8 | #define _LINUX_RANDOM_H | |
9 | ||
68622c61 | 10 | #include <linux/types.h> |
1da177e4 | 11 | #include <linux/ioctl.h> |
0ebb26e7 | 12 | #include <linux/irqnr.h> |
1da177e4 LT |
13 | |
14 | /* ioctl()'s for the random number generator */ | |
15 | ||
16 | /* Get the entropy count. */ | |
17 | #define RNDGETENTCNT _IOR( 'R', 0x00, int ) | |
18 | ||
19 | /* Add to (or subtract from) the entropy count. (Superuser only.) */ | |
20 | #define RNDADDTOENTCNT _IOW( 'R', 0x01, int ) | |
21 | ||
22 | /* Get the contents of the entropy pool. (Superuser only.) */ | |
23 | #define RNDGETPOOL _IOR( 'R', 0x02, int [2] ) | |
24 | ||
25 | /* | |
26 | * Write bytes into the entropy pool and add to the entropy count. | |
27 | * (Superuser only.) | |
28 | */ | |
29 | #define RNDADDENTROPY _IOW( 'R', 0x03, int [2] ) | |
30 | ||
31 | /* Clear entropy count to 0. (Superuser only.) */ | |
32 | #define RNDZAPENTCNT _IO( 'R', 0x04 ) | |
33 | ||
34 | /* Clear the entropy pool and associated counters. (Superuser only.) */ | |
35 | #define RNDCLEARPOOL _IO( 'R', 0x06 ) | |
36 | ||
37 | struct rand_pool_info { | |
38 | int entropy_count; | |
39 | int buf_size; | |
40 | __u32 buf[0]; | |
41 | }; | |
42 | ||
43 | /* Exported functions */ | |
44 | ||
45 | #ifdef __KERNEL__ | |
46 | ||
47 | extern void rand_initialize_irq(int irq); | |
48 | ||
49 | extern void add_input_randomness(unsigned int type, unsigned int code, | |
50 | unsigned int value); | |
51 | extern void add_interrupt_randomness(int irq); | |
52 | ||
53 | extern void get_random_bytes(void *buf, int nbytes); | |
54 | void generate_random_uuid(unsigned char uuid_out[16]); | |
55 | ||
b09b845c AV |
56 | extern __u32 secure_ip_id(__be32 daddr); |
57 | extern u32 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport); | |
58 | extern u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr, | |
59 | __be16 dport); | |
60 | extern __u32 secure_tcp_sequence_number(__be32 saddr, __be32 daddr, | |
61 | __be16 sport, __be16 dport); | |
62 | extern __u32 secure_tcpv6_sequence_number(__be32 *saddr, __be32 *daddr, | |
63 | __be16 sport, __be16 dport); | |
64 | extern u64 secure_dccp_sequence_number(__be32 saddr, __be32 daddr, | |
65 | __be16 sport, __be16 dport); | |
1da177e4 LT |
66 | |
67 | #ifndef MODULE | |
54047320 | 68 | extern const struct file_operations random_fops, urandom_fops; |
1da177e4 LT |
69 | #endif |
70 | ||
71 | unsigned int get_random_int(void); | |
72 | unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len); | |
73 | ||
aaa248f6 SH |
74 | u32 random32(void); |
75 | void srandom32(u32 seed); | |
76 | ||
1da177e4 LT |
77 | #endif /* __KERNEL___ */ |
78 | ||
79 | #endif /* _LINUX_RANDOM_H */ |