# Rerun with sudo if needed
[ $(id -u) = 0 ] || exec sudo $0 $@
+export ACTION="$(basename $0)"
+
# Function to write a message and exit with error code
die() {
echo "$*" >&2
exit 1
}
+beginswith() {
+ [ "$1" != "${1#$2}" ]
+}
+
# Function to setup subhost name and log file
subhost_name() {
CONFIG="$1"
config UPPER "$BASE/root"
config WORK "$BASE/work"
config LOWER "/"
- config START "!networking ssh"
+ config START "networking ssh"
config PREMOUNT "$PROGRAMDIR/overlay-premount"
config POSTMOUNT "$PROGRAMDIR/overlay-postmount"
config INIT "$PROGRAMDIR/overlay-init"
# Setup the network namespace for the given $CABLES
# $1=netns ( $2="br=mac" .. )
+# br is optional, mac is optional.
+# If mac is .N then it's taken as vlan tag on prior outer interface
+# (with ifup configuration) and the inner interface is left alone.
setup_veth_cables() {
local NETNS BR IF MAC C i ADD
NETNS="$1"
for C in "$@" ; do
IF=$NETNS$i
MAC="${C#*=}"
- [ -z "$MAC" ] || MAC="address $MAC"
- ip link add $IF type veth peer name eth$i $MAC netns $NETNS
- ip link set $IF up
+ if [ -z "$MAC" ] ; then
+ # set up veth with "random" mac address
+ ip link add $IF type veth peer name eth$i netns $NETNS
+ elif [ -z "${MAC%%.*}" ] ; then
+ # set up a host vlan with specified tag on previous eth
+ i=$((i-1))
+ IF=$NETNS$i$MAC
+ ifup $IF
+ else
+ # set up veth with specified mac address
+ ip link add $IF type veth peer name eth$i address $MAC netns $NETNS
+ fi
BR="${C%=*}"
if [ -z "$BR" ] ; then
- ip link set $IF
- ifup $IF
+ ifup $IF || ip link set $IF up
else
+ ip link set $IF up
brctl addif $BR $IF
fi
i=$((i+1))
elif [ "$LIVE" != "$UPPER" ] ; then
# With UPPER = LOWER we rather make a bind mount to LIVE
env CONFIG="$CONFIG" $PREMOUNT "$UPPER"
- mount --bind $UPPER $LOWER
+ mount --bind $UPPER $LIVE
fi
+ grep ^SHARE= "$CONFIG" | while read A ; do
+ B="$(echo ${A#SHARE=})"
+ D="$(realpath "$B")"
+ [ "$D" = "$LOWER" ] && continue
+ if [ -d "$D" ] ; then
+ echo bind mount $D onto $LIVE$B
+ mkdir -p $LIVE$D
+ mount --bind $D $LIVE$B
+ fi
+ done
+
env CONFIG="$CONFIG" $POSTMOUNT "LIVE" "$UPPER"
}
list_running() {
pgrep -a overlay-boot | awk '{print $4}'
}
+
+# Start cgroup v2 cpuset accounting if enabled.
+# Needs manual enabling, with:
+# mount -t cgroup2 cgroup2 /sys/fs/cgroup
+setup_cgroup2_accounting() {
+ local NAME="$1" ME="$2"
+ local ACCDIR="$(awk '$3 == "cgroup2" {print $2; exit}' /proc/mounts)"
+ [ -z "$ACCDIR" ] && return 0
+ mkdir -p "$ACCDIR/$NAME"
+ echo "$ME" > $ACCDIR/$NAME/cgroup.procs
+}