From: Ian Jackson <ijackson@chiark.greenend.org.uk>
Date: Sat, 12 Oct 2019 11:31:14 +0000 (+0100)
Subject: test: udp-preload: Fix binding, unlink
X-Git-Tag: v0.5.0~114
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=commitdiff_plain;h=e01a769c8f661bd5014b0445bf8974f71fcce46b;p=secnet.git

test: udp-preload: Fix binding, unlink

Avoids EADDRINUSE from the real bind(2).

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

diff --git a/test/udp-preload.c b/test/udp-preload.c
index 6667a67..55e4314 100644
--- a/test/udp-preload.c
+++ b/test/udp-preload.c
@@ -161,6 +161,7 @@ WRAP(bind) {
     *p++='/';
     if (addrport2str(p,addr,addrlen)) return -1;
 //fprintf(stderr,"binding %s\n",sun.sun_path);
+    if (unlink(sun.sun_path) && errno!=ENOENT) return -1;
     return old_bind(fd,(const void*)&sun,sizeof(sun));
 }