LCOV - code coverage report
Current view: top level - include/linux - random.h (source / functions) Hit Total Coverage
Test: coverage.info Lines: 1 1 100.0 %
Date: 2017-01-25 Functions: 0 0 -

          Line data    Source code
       1             : /*
       2             :  * include/linux/random.h
       3             :  *
       4             :  * Include file for the random number generator.
       5             :  */
       6             : 
       7             : #ifndef _LINUX_RANDOM_H
       8             : #define _LINUX_RANDOM_H
       9             : 
      10             : #include <linux/types.h>
      11             : #include <linux/ioctl.h>
      12             : #include <linux/irqnr.h>
      13             : 
      14             : /* ioctl()'s for the random number generator */
      15             : 
      16             : /* Get the entropy count. */
      17             : #define RNDGETENTCNT    _IOR( 'R', 0x00, int )
      18             : 
      19             : /* Add to (or subtract from) the entropy count.  (Superuser only.) */
      20             : #define RNDADDTOENTCNT  _IOW( 'R', 0x01, int )
      21             : 
      22             : /* Get the contents of the entropy pool.  (Superuser only.) */
      23             : #define RNDGETPOOL      _IOR( 'R', 0x02, int [2] )
      24             : 
      25             : /* 
      26             :  * Write bytes into the entropy pool and add to the entropy count.
      27             :  * (Superuser only.)
      28             :  */
      29             : #define RNDADDENTROPY   _IOW( 'R', 0x03, int [2] )
      30             : 
      31             : /* Clear entropy count to 0.  (Superuser only.) */
      32             : #define RNDZAPENTCNT    _IO( 'R', 0x04 )
      33             : 
      34             : /* Clear the entropy pool and associated counters.  (Superuser only.) */
      35             : #define RNDCLEARPOOL    _IO( 'R', 0x06 )
      36             : 
      37             : struct rand_pool_info {
      38             :         int     entropy_count;
      39             :         int     buf_size;
      40             :         __u32   buf[0];
      41             : };
      42             : 
      43             : /* Exported functions */
      44             : 
      45             : #ifdef __KERNEL__
      46             : 
      47             : extern void rand_initialize_irq(int irq);
      48             : 
      49             : extern void add_input_randomness(unsigned int type, unsigned int code,
      50             :                                  unsigned int value);
      51             : extern void add_interrupt_randomness(int irq);
      52             : 
      53             : extern void get_random_bytes(void *buf, int nbytes);
      54             : void generate_random_uuid(unsigned char uuid_out[16]);
      55             : 
      56             : #ifndef MODULE
      57             : extern const struct file_operations random_fops, urandom_fops;
      58             : #endif
      59             : 
      60             : unsigned int get_random_int(void);
      61             : unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len);
      62             : 
      63             : u32 random32(void);
      64             : void srandom32(u32 seed);
      65           1 : 
      66             : #endif /* __KERNEL___ */
      67             : 
      68             : #endif /* _LINUX_RANDOM_H */

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