/* * include/linux/random.h * * Include file for the random number generator. */ #ifndef _LINUX_RANDOM_H #define _LINUX_RANDOM_H #include <linux/ioctl.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 ) struct rand_pool_info { int entropy_count; int buf_size; __u32 buf[0]; }; /* Exported functions */ #ifdef __KERNEL__ extern void rand_initialize_irq(int irq); extern void add_input_randomness(unsigned int type, unsigned int code, unsigned int value); extern void add_interrupt_randomness(int irq); extern void get_random_bytes(void *buf, int nbytes); void generate_random_uuid(unsigned char uuid_out[16]); extern __u32 secure_ip_id(__be32 daddr); extern u32 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport); extern u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr, __be16 dport); extern __u32 secure_tcp_sequence_number(__be32 saddr, __be32 daddr, __be16 sport, __be16 dport); extern __u32 secure_tcpv6_sequence_number(__be32 *saddr, __be32 *daddr, __be16 sport, __be16 dport); extern u64 secure_dccp_sequence_number(__be32 saddr, __be32 daddr, __be16 sport, __be16 dport); #ifndef MODULE extern const struct file_operations random_fops, urandom_fops; #endif unsigned int get_random_int(void); unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len); u32 random32(void); void srandom32(u32 seed); #endif /* __KERNEL___ */ #endif /* _LINUX_RANDOM_H */