From: Sean Hefty <sean.hefty@intel.com>
Date: Mon, 30 Jul 2012 23:06:32 +0000 (-0700)
Subject: rspreload: Support dup2 calls
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=810924b05f1448e9da2916d16c71a44996ade3dc;p=~shefty%2Flibrdmacm.git

rspreload: Support dup2 calls

vsftpd requires dup2() support.  To handle dup2, we need to add
reference count tracking to the preload fd's.

Signed-off-by: Sean Hefty <sean.hefty@intel.com>
---

diff --git a/src/preload.c b/src/preload.c
index a6801434..4b891a10 100644
--- a/src/preload.c
+++ b/src/preload.c
@@ -886,3 +886,10 @@ int fcntl(int socket, int cmd, ... /* arg */)
 	va_end(args);
 	return ret;
 }
+
+int dup2(int oldfd, int newfd)
+{
+	int fd;
+	return (fd_get(oldfd, &fd) == fd_rsocket) ?
+		: dup2(oldfd, newfd);
+}