diff options
Diffstat (limited to 'src/lib/rng/system_rng/system_rng.cpp')
| -rw-r--r-- | src/lib/rng/system_rng/system_rng.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/lib/rng/system_rng/system_rng.cpp b/src/lib/rng/system_rng/system_rng.cpp index 135f4fabd..1ea749327 100644 --- a/src/lib/rng/system_rng/system_rng.cpp +++ b/src/lib/rng/system_rng/system_rng.cpp @@ -75,6 +75,12 @@ System_RNG_Impl::System_RNG_Impl() #endif m_fd = ::open(BOTAN_SYSTEM_RNG_DEVICE, O_RDWR | O_NOCTTY); + + // Cannot open in read-write mode. Fall back to read-only + // Calls to add_entropy will fail, but randomize will work + if(m_fd < 0) + m_fd = ::open(BOTAN_SYSTEM_RNG_DEVICE, O_RDONLY | O_NOCTTY); + if(m_fd < 0) throw Exception("System_RNG failed to open RNG device"); #endif |