diff options
| author | Jack Lloyd <[email protected]> | 2016-10-04 04:47:51 -0400 |
|---|---|---|
| committer | Jack Lloyd <[email protected]> | 2016-10-04 04:47:51 -0400 |
| commit | 921cd40cbde252b36fb59cb4f957ab49abf39279 (patch) | |
| tree | 397bf29eec1756fc7e1546d84a7a3a8b27c74d22 /src | |
| parent | 210f82b75591eb6ca57cfefa6a72242a598a947f (diff) | |
| parent | 467007928b2e929a67d68b22ff6d59a7a40b236a (diff) | |
Merge GH #648 Accept read-only access to /dev/urandom
See also GH #647
Diffstat (limited to 'src')
| -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 |