| #!/bin/sh |
| # Copyright (C) 2013, Parallels, Inc. All rights reserved. |
| # |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 2 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program; if not, write to the Free Software |
| # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| # |
| # This script is called by CRIU (http://criu.org) after creating namespaces. |
| # |
| # Parameters are passed in environment variables. |
| # Required parameters: |
| # VZCTL_PID - pid of vzctl |
| # STATUSFD - file descriptor for sending signal to vzctl |
| # WAITFD - file descriptor for receiving signal from vzctl |
| # VE_STATE_FILE - file with PID of container init process |
| # VE_NETNS_FILE - file, which used by ip netns |
| # CRTOOLS_SCRIPT_ACTION - current action (set by criu) |
| |
| exec 1>&2 |
| . @SCRIPTDIR@/vps-functions |
| |
| vzcheckvar CRTOOLS_SCRIPT_ACTION |
| [ "$CRTOOLS_SCRIPT_ACTION" = "setup-namespaces" ] || exit 0 |
| |
| vzcheckvar VZCTL_PID |
| vzcheckvar STATUSFD |
| vzcheckvar WAITFD |
| vzcheckvar VE_NETNS_FILE |
| vzcheckvar VE_STATE_FILE |
| |
| set -e |
| |
| pid=$(cat $VE_STATE_FILE) |
| ln -s /proc/$pid/ns/net $VE_NETNS_FILE |
| |
| printf '\0\0\0\0' > /proc/$VZCTL_PID/fd/$STATUSFD |
| ret=$(cat /proc/$VZCTL_PID/fd/$WAITFD | hexdump -e '"%d"' -n 4) |
| |
| [ "$ret" -eq "0" ] |