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- /*
- * 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(__u32 daddr);
- extern u32 secure_tcp_port_ephemeral(__u32 saddr, __u32 daddr, __u16 dport);
- extern __u32 secure_tcp_sequence_number(__u32 saddr, __u32 daddr,
- __u16 sport, __u16 dport);
- extern __u32 secure_tcp_syn_cookie(__u32 saddr, __u32 daddr,
- __u16 sport, __u16 dport,
- __u32 sseq, __u32 count,
- __u32 data);
- extern __u32 check_tcp_syn_cookie(__u32 cookie, __u32 saddr,
- __u32 daddr, __u16 sport,
- __u16 dport, __u32 sseq,
- __u32 count, __u32 maxdiff);
- extern __u32 secure_tcpv6_sequence_number(__u32 *saddr, __u32 *daddr,
- __u16 sport, __u16 dport);
-
- #ifndef MODULE
- extern struct file_operations random_fops, urandom_fops;
- #endif
-
- #endif /* __KERNEL___ */
-
- #endif /* _LINUX_RANDOM_H */
-