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: base.ipv6-polypath-fixes.v1~19
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=secnet.git;a=commitdiff_plain;h=94a1d5fce6a68fce8216d4b45ef6148d353c2c3a

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 770ffc2..58a89ee 100644
--- 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();
     }