From: David Woodhouse <David.Woodhouse@intel.com>
Date: Sat, 6 Jun 2009 12:19:27 +0000 (+0100)
Subject: Add netunshare
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=e7735d5560eabf9da8edcc9cba306c232a8a714b;p=users%2Fdwmw2%2Fvpnc-scripts.git

Add netunshare

Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
---

diff --git a/netunshare.c b/netunshare.c
new file mode 100644
index 0000000..6c3fbfd
--- /dev/null
+++ b/netunshare.c
@@ -0,0 +1,30 @@
+#define _GNU_SOURCE
+#include <sched.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <errno.h>
+
+#ifndef CLONE_NEWNET
+#error CLONE_NEWNET not defined
+#endif
+
+int main(int argc, char *argv[])
+{	
+	if (argc < 1) {
+		fprintf(stderr, "usage: %s <command> [<args...>]\n",
+			basename(argv[0]));
+		return 1;
+	}
+	argv++;
+
+	if (unshare(CLONE_NEWNET) == -1) {
+		perror("unshare");
+		return 1;
+	} 
+	
+	execv(argv[0], argv);
+	/* Failed... */
+	perror("execve");
+	return 1;
+}
+