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Commit 287776dd authored by Daichi Hirono's avatar Daichi Hirono
Browse files

Use SO_SNDBUFFORCE instead of SO_SNDBUF 

When /proc/sys/net/core/wmem_max is smaller than kMaxMessageSize, we
need to override the limitation.

Bug: 37561460
Test: libappfuse_tests

Change-Id: Ibaac8db61290d661459fdc46f0ae8416f7db1d9e
parent df54d0ef

libappfuse/FuseBuffer.cc

+2 −2
Original line number Diff line number Diff line
@@ -141,8 +141,8 @@ bool SetupMessageSockets(base::unique_fd (*result)[2]) { 
    }



    constexpr int kMaxMessageSize = sizeof(FuseBuffer);

    if (setsockopt(fds[0], SOL_SOCKET, SO_SNDBUF, &kMaxMessageSize, sizeof(int)) != 0 ||

        setsockopt(fds[1], SOL_SOCKET, SO_SNDBUF, &kMaxMessageSize, sizeof(int)) != 0) {

    if (setsockopt(fds[0], SOL_SOCKET, SO_SNDBUFFORCE, &kMaxMessageSize, sizeof(int)) != 0 ||

        setsockopt(fds[1], SOL_SOCKET, SO_SNDBUFFORCE, &kMaxMessageSize, sizeof(int)) != 0) {

        PLOG(ERROR) << "Failed to update buffer size for socket";

        return false;

    }