2 * include/linux/random.h
4 * Include file for the random number generator.
6 #ifndef _LINUX_RANDOM_H
7 #define _LINUX_RANDOM_H
9 #include <linux/list.h>
10 #include <linux/once.h>
12 #include <uapi/linux/random.h>
14 struct random_ready_callback {
15 struct list_head list;
16 void (*func)(struct random_ready_callback *rdy);
20 extern void add_device_randomness(const void *, unsigned int);
22 #if defined(CONFIG_GCC_PLUGIN_LATENT_ENTROPY) && !defined(__CHECKER__)
23 static inline void add_latent_entropy(void)
25 add_device_randomness((const void *)&latent_entropy,
26 sizeof(latent_entropy));
29 static inline void add_latent_entropy(void) {}
32 extern void add_input_randomness(unsigned int type, unsigned int code,
33 unsigned int value) __latent_entropy;
34 extern void add_interrupt_randomness(int irq, int irq_flags) __latent_entropy;
36 extern void get_random_bytes(void *buf, int nbytes);
37 extern int add_random_ready_callback(struct random_ready_callback *rdy);
38 extern void del_random_ready_callback(struct random_ready_callback *rdy);
39 extern void get_random_bytes_arch(void *buf, int nbytes);
42 extern const struct file_operations random_fops, urandom_fops;
45 unsigned int get_random_int(void);
46 unsigned long get_random_long(void);
47 unsigned long randomize_page(unsigned long start, unsigned long range);
50 * This is designed to be standalone for just prandom
51 * users, but for now we include it from <linux/random.h>
54 #include <linux/prandom.h>
56 #ifdef CONFIG_ARCH_RANDOM
57 # include <asm/archrandom.h>
59 static inline bool arch_get_random_long(unsigned long *v)
63 static inline bool arch_get_random_int(unsigned int *v)
67 static inline bool arch_has_random(void)
71 static inline bool arch_get_random_seed_long(unsigned long *v)
75 static inline bool arch_get_random_seed_int(unsigned int *v)
79 static inline bool arch_has_random_seed(void)
85 #endif /* _LINUX_RANDOM_H */