xref: /OK3568_Linux_fs/kernel/tools/testing/selftests/net/in_netns.sh (revision 4882a59341e53eb6f0b4789bf948001014eff981) 
1*4882a593Smuzhiyun#!/bin/sh
2*4882a593Smuzhiyun# SPDX-License-Identifier: GPL-2.0
3*4882a593Smuzhiyun#
4*4882a593Smuzhiyun# Execute a subprocess in a network namespace
5*4882a593Smuzhiyun
6*4882a593Smuzhiyunset -e
7*4882a593Smuzhiyun
8*4882a593Smuzhiyunreadonly NETNS="ns-$(mktemp -u XXXXXX)"
9*4882a593Smuzhiyun
10*4882a593Smuzhiyunsetup() {
11*4882a593Smuzhiyun	ip netns add "${NETNS}"
12*4882a593Smuzhiyun	ip -netns "${NETNS}" link set lo up
13*4882a593Smuzhiyun}
14*4882a593Smuzhiyun
15*4882a593Smuzhiyuncleanup() {
16*4882a593Smuzhiyun	ip netns del "${NETNS}"
17*4882a593Smuzhiyun}
18*4882a593Smuzhiyun
19*4882a593Smuzhiyuntrap cleanup EXIT
20*4882a593Smuzhiyunsetup
21*4882a593Smuzhiyun
22*4882a593Smuzhiyunip netns exec "${NETNS}" "$@"
23*4882a593Smuzhiyunexit "$?"
24