initial scattered import

1 files changed, 81 insertions, 0 deletions

diff --git a/kvm-manager b/kvm-manager
new file mode 100755
index 0000000..40972ce
--- /dev/null
+++ b/kvm-manager
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+#!/bin/sh
+
+set -e
+set -x
+
+# Author: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
+# Date: 2009-10-08
+# License: GPL v3+
+
+## expect to pull these values from the environment:
+# VMNAME=snapper
+# OWNER=jrollins
+# TAP=tap0
+# RAM=512
+# MAC=52:54:00:12:34:56
+
+if [ -z "$VMNAME" ] ; then
+    exit 1
+fi
+
+###################
+OWNERGROUP=$(groups "$OWNER" | cut -f1 -d\  )
+OWNERHOME=$(getent passwd "$OWNER" | cut -f6 -d: )
+
+VGNAME=vg_$(hostname)0
+
+up() {
+# bring up the network tap:
+    modprobe -v tun
+    tunctl -u "$OWNER" -t "$TAP"
+    ip link set "$TAP" up
+    brctl addif br0 "$TAP"
+    
+# make sure the block device is readable by the owner:
+    chgrp "$OWNERGROUP" "/dev/mapper/${VGNAME}-$VMNAME"
+    
+    chpst -u "$OWNER:$OWNERGROUP" mkdir -p "$OWNERHOME/vms/$VMNAME"
+
+    CDISO="$OWNERHOME/vms/$VMNAME/cd.iso"
+    NETBOOT="$OWNERHOME/vms/$VMNAME/netboot"
+    KVMARGS=
+    
+    if [ -e "$NETBOOT" ] ; then
+	KVMARGS="-boot n"
+    elif [ -e "$CDISO" ] && [ -e $(readlink -f "$CDISO") ] ; then
+	KVMARGS="-cdrom $CDISO -boot d"
+    fi
+
+    LOGNAME="$OWNERHOME/vms/$VMNAME/console"
+    ln -sfT "$LOGNAME" ./servicelog
+    if [ -e "$LOGNAME" ] ; then
+	chpst -u "$OWNER" mv "$LOGNAME" "$LOGNAME".$(date +%F_%T%z|tr : .)
+    fi
+
+    exec chpst -u "$OWNER:$OWNERGROUP:kvm" /usr/bin/screen -D -m -L -c /etc/screenrc.kvm-manager -S "$VMNAME" -t "$VMNAME" -s /bin/false /usr/bin/kvm $KVMARGS -nographic -name "$VMNAME" -m "$RAM" -net nic,"macaddr=$MAC" -net "tap,hostname=$VMNAME,ifname=$TAP,script=no,downscript=no" -no-reboot -serial stdio "/dev/mapper/${VGNAME}-$VMNAME" 
+}
+
+
+down() {
+    brctl delif br0 "$TAP"
+    ip link set "$TAP" down
+    tunctl -d "$TAP"
+# no need to lock up the block device as well, since the owner might
+# prefer to manipulate the disk directly.
+}
+
+log() {
+    LOGDIR="$OWNERHOME/vms/$VMNAME/servicelog"
+    chpst -u "$OWNER" mkdir -p "$LOGDIR"
+    exec chpst -u "$OWNER" svlogd -tt "$LOGDIR"
+}
+
+case "$1" in
+    up|down|log)
+	"$1"
+	;;
+    *)
+	echo "Usage: $0 [up|down]"
+	exit 1
+	;;
+esac