git.sesse.net Git - bcachefs-tools-debian/blob - include/linux/prandom.h

   1 #ifndef _LINUX_PRANDOM_H
   2 #define _LINUX_PRANDOM_H
   3
   4 #include <linux/random.h>
   5
   6 static inline void prandom_bytes(void *buf, int nbytes)
   7 {
   8         return get_random_bytes(buf, nbytes);
   9 }
  10
  11 #define prandom_type(type)                              \
  12 static inline type prandom_##type(void)                 \
  13 {                                                       \
  14         type v;                                         \
  15                                                         \
  16         prandom_bytes(&v, sizeof(v));                   \
  17         return v;                                       \
  18 }
  19
  20 prandom_type(int);
  21 prandom_type(long);
  22 prandom_type(u32);
  23 prandom_type(u64);
  24 #undef prandom_type
  25
  26 static inline u32 prandom_u32_max(u32 max)
  27 {
  28         return prandom_u32() % max;
  29
  30 }
  31
  32 #endif /* _LINUX_PRANDOM_H */
  33