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| author |   Bin Jin <bjin@ctrl-d.org> | 2017-03-17 00:41:13 +0800 |
|---|---|---|
| committer | Bin Jin <bjin@ctrl-d.org> | 2017-03-17 00:41:13 +0800 |
| commit | 1006b2f7417939380bde54bcd82c38b996f1e0b7 (patch) | |
| tree | 133f914c83e604e2e0a180042c8b91a07dd93837 /src/Network/WireGuard | |
| parent | add flag for static build (diff) | |
| download | wireguard-hs-1006b2f7417939380bde54bcd82c38b996f1e0b7.tar.xz wireguard-hs-1006b2f7417939380bde54bcd82c38b996f1e0b7.zip | |
handle exception in openTun
Diffstat (limited to 'src/Network/WireGuard')
| -rw-r--r-- | src/Network/WireGuard/Foreign/Tun.hs | 14 |
1 files changed, 6 insertions, 8 deletions
diff --git a/src/Network/WireGuard/Foreign/Tun.hs b/src/Network/WireGuard/Foreign/Tun.hs index 2d0f929..3fdbbd4 100644 --- a/src/Network/WireGuard/Foreign/Tun.hs +++ b/src/Network/WireGuard/Foreign/Tun.hs @@ -14,17 +14,15 @@ import System.Posix.Types (Fd (..)) import Foreign import Foreign.C -openTun :: String -> Int -> IO (Maybe [Fd]) +openTun :: String -> Int -> IO [Fd] openTun intfName threads = withCString intfName $ \intf_name_c -> allocaArray threads $ \fds_c -> do - res <- tun_alloc_c intf_name_c (fromIntegral threads) fds_c -- TODO: handle exception - if res > 0 - then do - fds <- peekArray (fromIntegral res) fds_c - forM_ fds $ \fd -> setNonBlockingFD fd True - return (Just (map Fd fds)) - else return Nothing + res <- throwErrnoIfMinus1Retry "openTun" $ + tun_alloc_c intf_name_c (fromIntegral threads) fds_c + fds <- peekArray (fromIntegral res) fds_c + forM_ fds $ \fd -> setNonBlockingFD fd True + return (map Fd fds) tunReadBuf :: Fd -> Ptr Word8 -> CSize -> IO CSize tunReadBuf _fd _buf 0 = return 0 |