vendor/openssl-0.9.19/src/rand.rs

   1 use libc::c_int;
   2 use ffi;
   3
   4 use cvt;
   5 use error::ErrorStack;
   6
   7 pub fn rand_bytes(buf: &mut [u8]) -> Result<(), ErrorStack> {
   8     unsafe {
   9         ffi::init();
  10         assert!(buf.len() <= c_int::max_value() as usize);
  11         cvt(ffi::RAND_bytes(buf.as_mut_ptr(), buf.len() as c_int)).map(|_| ())
  12     }
  13 }
  14
  15 #[cfg(test)]
  16 mod tests {
  17     use super::rand_bytes;
  18
  19     #[test]
  20     fn test_rand_bytes() {
  21         let mut buf = [0; 32];
  22         rand_bytes(&mut buf).unwrap();
  23     }
  24 }