diff options
| -rw-r--r-- | src/libstd/sys/unix/rand.rs | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/libstd/sys/unix/rand.rs b/src/libstd/sys/unix/rand.rs index 92c3bf8829a..7f52a9c1bee 100644 --- a/src/libstd/sys/unix/rand.rs +++ b/src/libstd/sys/unix/rand.rs @@ -41,8 +41,10 @@ mod imp { #[cfg(target_arch = "aarch64")] const NR_GETRANDOM: libc::c_long = 278; + const GRND_NONBLOCK: libc::c_uint = 0x0001; + unsafe { - libc::syscall(NR_GETRANDOM, buf.as_mut_ptr(), buf.len(), 0) + libc::syscall(NR_GETRANDOM, buf.as_mut_ptr(), buf.len(), GRND_NONBLOCK) } } @@ -63,6 +65,11 @@ mod imp { let err = errno() as libc::c_int; if err == libc::EINTR { continue; + } else if err == libc::EAGAIN { + let reader = File::open("/dev/urandom").expect("Unable to open /dev/urandom"); + let mut reader_rng = ReaderRng::new(reader); + reader_rng.fill_bytes(& mut v[read..]); + read += v.len() as usize; } else { panic!("unexpected getrandom error: {}", err); } |