From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Wed, 1 Oct 2014 17:20:44 +0000 (+0100)
Subject: polypath: Close parent's socket in child
X-Git-Tag: proposed.polypath.v3~9
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?a=commitdiff_plain;h=02f4a4c7f8c77df8e49cf63b9371545cb5124fd4;p=secnet.git

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 a07bdfc..8b60ac2 100644
--- a/polypath.c
+++ b/polypath.c
@@ -474,6 +474,7 @@ 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();
     }