nfs/Connection: nfs_get_fd() can return -1

While reconnecting to the NFS server, the socket is -1, because there is no socket. Fixes a potential crash (assertion failure).

nfs/Connection: nfs_get_fd() can return -1
559a01f5 · Max Kellermann · ba8e3f11 · 559a01f5
Commit 559a01f5 authored Aug 31, 2014 by Max Kellermann
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Connection.cxx src/lib/nfs/Connection.cxx +3 -0

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--- a/src/lib/nfs/Connection.cxx
+++ b/src/lib/nfs/Connection.cxx
@@ -237,6 +237,9 @@ NfsConnection::ScheduleSocket()

 	if (!SocketMonitor::IsDefined()) {
 		int _fd = nfs_get_fd(context);
+		if (_fd < 0)
+			return;
+
 		fd_set_cloexec(_fd, true);
 		SocketMonitor::Open(_fd);
 	}