summaryrefslogtreecommitdiff
blob: cfd35c2b8b4d45374184d42b1b73faadc587486e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
#!/sbin/runscript
# Copyright 2009 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

# To use this, symlink a target kvm instance to this script.
# Literally, ln -s kvm /etc/init.d/kvm.<vmname>
# then have a config named /etc/conf.d/kvm.<vmname>


VMNAME=${SVCNAME#*.}
PIDFILE=/var/run/vm/${VMNAME}.pid
MONITOR=/var/run/vm/${VMNAME}.monitor
QTAP_FILE=/var/run/vm/${VMNAME}.qtap

# Default to qemu-kvm in the absense of a setting, failing back
# to kvm if no binary is found, finally, back to qemu.
[ -z "$VMSOFTWARE" ] && VMSOFTWARE=$(type -p qemu-kvm)
[ -z "$VMSOFTWARE" ] && VMSOFTWARE=$(type -p kvm)
[ -z "$VMSOFTWARE" ] && VMSOFTWARE=$(type -p qemu)

DROP_USER=${DROP_USER:-nobody}
MEMORY=${MEMORY:-512M}
TIMEOUT=${TIMEOUT:-300}
SMP=${SMP:-1}
export KVM_USER=${KVM_USER:-"root"}

extra_commands="reboot"

depend() {
	need net.br0
}

send_command() {
	local command="socat -u - UNIX-CONNECT:${MONITOR}"
	type -p nc6 > /dev/null && command="nc6 -U ${MONITOR} --send-only"
	echo "$@" | ${command} > /dev/null 2>&1
}

sanity_check() {
	if [ "${VMNAME}" = "${SVCNAME}" ]; then
		eerror "You have to create an init script for each vm:"
		eerror " ln -s vm /etc/init.d/vm.vmname"
		return 1
	elif [ ! -f "${DISKIMAGE}" -a ! -b "${DISKIMAGE}" ]; then
		eerror "couldn't find \$DISKIMAGE '$DISKIMAGE'"
		return 1;
	fi
}

start() {
	sanity_check

	img=$(readlink -f "${DISKIMAGE}")
	[ -z "$img" ] && {
		eerror "couldn't find ${DISKIMAGE}"
		return 1;
	}

	mkdir -p "${PIDFILE%/*}" "${MONITOR%/*}"
	ebegin "creating qtap ${QTAP:-(auto allocating one)}"
	if [ -n "$QTAP" ]; then
		qtap-manipulate create_specific "${QTAP}" -u "${DROP_USER}"
	else
		QTAP=$(qtap-manipulate create -u "${DROP_USER}")
		if [ 0 != $? ]; then
			eerror "failed to create qtap interface"
			return 1
		fi
	fi
	echo "${QTAP}" > ${QTAP_FILE}
	eend $?

	ebegin "Starting ${VMSOFTWARE##*/} for ${VMNAME} at VNC port${VNC}"
	start-stop-daemon --start "${VMSOFTWARE}" \
		--pidfile ${PIDFILE} \
		-- -daemonize -pidfile ${PIDFILE} -monitor unix:${MONITOR},server,nowait \
		-runas ${DROP_USER} -name ${VMNAME} \
		-drive file="$img",if=${DRIVE_MODEL:-virtio},cache=${DRIVE_CACHE:-none} \
		-net nic,model=${NIC_MODEL:-virtio},macaddr=${MACADDR} -net tap,ifname=${QTAP},script=no \
		${DISABLE_KVM:---enable-kvm}  \
		${MEMORY:+-m ${MEMORY}} ${SMP:+-smp ${SMP}} ${VNC:+-vnc ${VNC}} ${OTHER_ARGS}
	ret=$?
	if [ "0" != "${ret}" ]; then
		qtap-manipulate destroy ${QTAP}
	fi
	eend ${ret}
}

reboot() {
	if [ ${VMNAME} = ${SVCNAME} ]; then
		eerror "You have to create an init script for each vm:"
		eerror " ln -s vm /etc/init.d/vm.vmname"
		return 1
	fi

	ebegin "Rebooting ${VMNAME}"
	send_command system_reset
	eend $?
}

stop() {
	sanity_check

	ebegin "Powering off ${VMNAME}"
	send_command system_powerdown
	eend $?

	ebegin "waiting up to ${TIMEOUT:-60} seconds for it to die"
	local pid
	[ -s "${PIDFILE}" ] && pid=$(cat "${PIDFILE}")
	if [ -z "$pid" ]; then
		eerror "Couldn't find stored pid at '$PIDFILE'; user will have to manually kill kvm"
		eerror "Will attempt to destroy qtap despite."
		eend 1
	else
		local ret=1
		for x in $(seq 0 ${TIMEOUT:-60}); do
			if kill -0 "${pid}" > /dev/null 2>&1; then
				sleep 1s
				continue
			fi
			ret=0
			break
		done
		eend $ret
	fi

	ebegin "Stopping ${VMSOFTWARE##*/} for ${VMNAME}"
	start-stop-daemon --stop "${VMSOFTWARE}" \
		--user "${DROP_USER}" \
		--pidfile "${PIDFILE}" \
		--quiet
	eend $?
	local qtap
	[ -s "${QTAP_FILE}" ] && qtap=$(cat "${QTAP_FILE}")
	if [ -n "$qtap" ]; then
		ebegin "destroying qtap ${qtap}"
		qtap-manipulate destroy ${qtap}
		eend $?
	fi
}