projects / linux-2.6-block.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> | |
| 0ebb26e7 | 11 | #include <linux/irqnr.h> |
| 1da177e4 LT |
12 | |
| 13 | /* ioctl()'s for the random number generator */ | |
| 14 | ||
| 15 | /* Get the entropy count. */ | |
| 16 | #define RNDGETENTCNT _IOR( 'R', 0x00, int ) | |
| 17 | ||
| 18 | /* Add to (or subtract from) the entropy count. (Superuser only.) */ | |
| 19 | #define RNDADDTOENTCNT _IOW( 'R', 0x01, int ) | |
| 20 | ||
| 21 | /* Get the contents of the entropy pool. (Superuser only.) */ | |
| 22 | #define RNDGETPOOL _IOR( 'R', 0x02, int [2] ) | |
| 23 | ||
| 24 | /* | |
| 25 | * Write bytes into the entropy pool and add to the entropy count. | |
| 26 | * (Superuser only.) | |
| 27 | */ | |
| 28 | #define RNDADDENTROPY _IOW( 'R', 0x03, int [2] ) | |
| 29 | ||
| 30 | /* Clear entropy count to 0. (Superuser only.) */ | |
| 31 | #define RNDZAPENTCNT _IO( 'R', 0x04 ) | |
| 32 | ||
| 33 | /* Clear the entropy pool and associated counters. (Superuser only.) */ | |
| 34 | #define RNDCLEARPOOL _IO( 'R', 0x06 ) | |
| 35 | ||
| 36 | struct rand_pool_info { | |
| 37 | int entropy_count; | |
| 38 | int buf_size; | |
| 39 | __u32 buf[0]; | |
| 40 | }; | |
| 41 | ||
| 42 | /* Exported functions */ | |
| 43 | ||
| 44 | #ifdef __KERNEL__ | |
| 45 | ||
| 46 | extern void rand_initialize_irq(int irq); | |
| 47 | ||
| 48 | extern void add_input_randomness(unsigned int type, unsigned int code, | |
| 49 | unsigned int value); | |
| 50 | extern void add_interrupt_randomness(int irq); | |
| 51 | ||
| 52 | extern void get_random_bytes(void *buf, int nbytes); | |
| 53 | void generate_random_uuid(unsigned char uuid_out[16]); | |
| 54 | ||
| b09b845c AV |
55 | extern __u32 secure_ip_id(__be32 daddr); |
| 56 | extern u32 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport); | |
| 57 | extern u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr, | |
| 58 | __be16 dport); | |
| 59 | extern __u32 secure_tcp_sequence_number(__be32 saddr, __be32 daddr, | |
| 60 | __be16 sport, __be16 dport); | |
| 61 | extern __u32 secure_tcpv6_sequence_number(__be32 *saddr, __be32 *daddr, | |
| 62 | __be16 sport, __be16 dport); | |
| 63 | extern u64 secure_dccp_sequence_number(__be32 saddr, __be32 daddr, | |
| 64 | __be16 sport, __be16 dport); | |
| 1da177e4 LT |
65 | |
| 66 | #ifndef MODULE | |
| 54047320 | 67 | extern const struct file_operations random_fops, urandom_fops; |
| 1da177e4 LT |
68 | #endif |
| 69 | ||
| 70 | unsigned int get_random_int(void); | |
| 71 | unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len); | |
| 72 | ||
| aaa248f6 SH |
73 | u32 random32(void); |
| 74 | void srandom32(u32 seed); | |
| 75 | ||
| 1da177e4 LT |
76 | #endif /* __KERNEL___ */ |
| 77 | ||
| 78 | #endif /* _LINUX_RANDOM_H */ |