b09b845ca6
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
78 lines
2.1 KiB
C
78 lines
2.1 KiB
C
/*
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* include/linux/random.h
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*
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* Include file for the random number generator.
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*/
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#ifndef _LINUX_RANDOM_H
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#define _LINUX_RANDOM_H
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#include <linux/ioctl.h>
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/* ioctl()'s for the random number generator */
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/* Get the entropy count. */
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#define RNDGETENTCNT _IOR( 'R', 0x00, int )
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/* Add to (or subtract from) the entropy count. (Superuser only.) */
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#define RNDADDTOENTCNT _IOW( 'R', 0x01, int )
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/* Get the contents of the entropy pool. (Superuser only.) */
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#define RNDGETPOOL _IOR( 'R', 0x02, int [2] )
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/*
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* Write bytes into the entropy pool and add to the entropy count.
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* (Superuser only.)
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*/
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#define RNDADDENTROPY _IOW( 'R', 0x03, int [2] )
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/* Clear entropy count to 0. (Superuser only.) */
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#define RNDZAPENTCNT _IO( 'R', 0x04 )
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/* Clear the entropy pool and associated counters. (Superuser only.) */
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#define RNDCLEARPOOL _IO( 'R', 0x06 )
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struct rand_pool_info {
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int entropy_count;
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int buf_size;
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__u32 buf[0];
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};
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/* Exported functions */
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#ifdef __KERNEL__
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extern void rand_initialize_irq(int irq);
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extern void add_input_randomness(unsigned int type, unsigned int code,
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unsigned int value);
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extern void add_interrupt_randomness(int irq);
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extern void get_random_bytes(void *buf, int nbytes);
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void generate_random_uuid(unsigned char uuid_out[16]);
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extern __u32 secure_ip_id(__be32 daddr);
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extern u32 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport);
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extern u32 secure_ipv6_port_ephemeral(const __be32 *saddr, const __be32 *daddr,
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__be16 dport);
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extern __u32 secure_tcp_sequence_number(__be32 saddr, __be32 daddr,
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__be16 sport, __be16 dport);
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extern __u32 secure_tcpv6_sequence_number(__be32 *saddr, __be32 *daddr,
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__be16 sport, __be16 dport);
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extern u64 secure_dccp_sequence_number(__be32 saddr, __be32 daddr,
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__be16 sport, __be16 dport);
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#ifndef MODULE
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extern struct file_operations random_fops, urandom_fops;
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#endif
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unsigned int get_random_int(void);
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unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len);
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u32 random32(void);
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void srandom32(u32 seed);
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#endif /* __KERNEL___ */
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#endif /* _LINUX_RANDOM_H */
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