[PATCH v2 10/10] vchan-socket-proxy: Handle closing shared input/output_fd

[Jason Andryuk <jandryuk@xxxxxxxxx>]

input_fd & output_fd may be the same FD.  In that case, mark both as -1
when closing one.  That avoids a dangling FD reference.

Signed-off-by: Jason Andryuk <jandryuk@xxxxxxxxx>
---
 tools/libvchan/vchan-socket-proxy.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tools/libvchan/vchan-socket-proxy.c 
b/tools/libvchan/vchan-socket-proxy.c
index 3552783ec2..e1d959c6d1 100644
--- a/tools/libvchan/vchan-socket-proxy.c
+++ b/tools/libvchan/vchan-socket-proxy.c
@@ -349,6 +349,8 @@ int data_loop(struct vchan_proxy_state *state)
                     libxenvchan_wait(state->ctrl);
                 }
                 close(state->input_fd);
+                if (state->input_fd == state->output_fd)
+                    state->output_fd = -1;
                 state->input_fd = -1;
                 /* TODO: maybe signal the vchan client somehow? */
                 break;
-- 
2.25.1