projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| 10 | #include <linux/ioctl.h> | |
| 11 | ||
| 12 | /* ioctl()'s for the random number generator */ | |
| 13 | ||
| 14 | /* Get the entropy count. */ | |
| 15 | #define RNDGETENTCNT _IOR( 'R', 0x00, int ) | |
| 16 | ||
| 17 | /* Add to (or subtract from) the entropy count. (Superuser only.) */ | |
| 18 | #define RNDADDTOENTCNT _IOW( 'R', 0x01, int ) | |
| 19 | ||
| 20 | /* Get the contents of the entropy pool. (Superuser only.) */ | |
| 21 | #define RNDGETPOOL _IOR( 'R', 0x02, int [2] ) | |
| 22 | ||
| 23 | /* | |
| 24 | * Write bytes into the entropy pool and add to the entropy count. | |
| 25 | * (Superuser only.) | |
| 26 | */ | |
| 27 | #define RNDADDENTROPY _IOW( 'R', 0x03, int [2] ) | |
| 28 | ||
| 29 | /* Clear entropy count to 0. (Superuser only.) */ | |
| 30 | #define RNDZAPENTCNT _IO( 'R', 0x04 ) | |
| 31 | ||
| 32 | /* Clear the entropy pool and associated counters. (Superuser only.) */ | |
| 33 | #define RNDCLEARPOOL _IO( 'R', 0x06 ) | |
| 34 | ||
| 35 | struct rand_pool_info { | |
| 36 | int entropy_count; | |
| 37 | int buf_size; | |
| 38 | __u32 buf[0]; | |
| 39 | }; | |
| 40 | ||
| 41 | /* Exported functions */ | |
| 42 | ||
| 43 | #ifdef __KERNEL__ | |
| 44 | ||
| 45 | extern void rand_initialize_irq(int irq); | |
| 46 | ||
| 47 | extern void add_input_randomness(unsigned int type, unsigned int code, | |
| 48 | unsigned int value); | |
| 49 | extern void add_interrupt_randomness(int irq); | |
| 50 | ||
| 51 | extern void get_random_bytes(void *buf, int nbytes); | |
| 52 | void generate_random_uuid(unsigned char uuid_out[16]); | |
| 53 | ||
| 54 | extern __u32 secure_ip_id(__u32 daddr); | |
| 55 | extern u32 secure_tcp_port_ephemeral(__u32 saddr, __u32 daddr, __u16 dport); | |
| 56 | extern u32 secure_tcpv6_port_ephemeral(const __u32 *saddr, const __u32 *daddr, | |
| 57 | __u16 dport); | |
| 58 | extern __u32 secure_tcp_sequence_number(__u32 saddr, __u32 daddr, | |
| 59 | __u16 sport, __u16 dport); | |
| 60 | extern __u32 secure_tcpv6_sequence_number(__u32 *saddr, __u32 *daddr, | |
| 61 | __u16 sport, __u16 dport); | |
| c4365c92 ACM |
62 | extern u64 secure_dccp_sequence_number(__u32 saddr, __u32 daddr, |
| 63 | __u16 sport, __u16 dport); | |
| 1da177e4 LT |
64 | |
| 65 | #ifndef MODULE | |
| 66 | extern struct file_operations random_fops, urandom_fops; | |
| 67 | #endif | |
| 68 | ||
| 69 | unsigned int get_random_int(void); | |
| 70 | unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len); | |
| 71 | ||
| 72 | #endif /* __KERNEL___ */ | |
| 73 | ||
| 74 | #endif /* _LINUX_RANDOM_H */ |