polypath: Close parent's socket in child

Previously this would happen automatically due to CLOEXEC, but we are
going to have a long-running child, which needs to not have a copy of
this fd.

Signed-off-by: Ian Jackson <ijackson@chiark.greenend.org.uk>

diff --git a/polypath.c b/polypath.c
index 770ffc2a3d81879681f6bf72042b81e15e3578cf..58a89ee9f0cc978add45ca6a95d170103360b69a 100644 (file)
--- a/polypath.c
+++ b/polypath.c
@@ -475,6 +475,7 @@ static void start_subproc(struct polypath *st, void (*make_fdpair)(int[2]),
     pid_t pid=fork();
     if (!pid) {
        afterfork();
+       close(pfds[0]);
        child(st,pfds[1]);
        abort();
     }