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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(void);
extern void rand_initialize_irq(int irq);
extern void rand_initialize_blkdev(int irq, int mode);
extern void add_keyboard_randomness(unsigned char scancode);
extern void add_mouse_randomness(__u32 mouse_data);
extern void add_interrupt_randomness(int irq);
extern void add_blkdev_randomness(int major);
extern void get_random_bytes(void *buf, int nbytes);
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);
#ifndef MODULE
extern struct file_operations random_fops, urandom_fops;
#endif
#endif /* __KERNEL___ */
#endif /* _LINUX_RANDOM_H */
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