mirror of
https://gitlab.alpinelinux.org/alpine/aports.git
synced 2026-01-08 10:12:59 +01:00
27c594dd0b
- do not re-download the modloop on netboot when restarting service - rename unionfs to overlayfs (including the conf.d variable) - allow size setting to 0 to mount with default size
128 lines
3.0 KiB
Plaintext
128 lines
3.0 KiB
Plaintext
#!/sbin/openrc-run
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# script that will mount image with modules
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depend() {
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after dev-mount
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before checkfs fsck hwdrivers modules hwclock dev sysfs
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keyword -vserver -lxc
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}
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# read kernel options
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init_KOPT() {
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for opt in $(cat /proc/cmdline 2>/dev/null); do
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case "$opt" in
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modloop=*)
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eval "KOPT_${opt%%=*}='${opt#*=}'" ;;
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esac
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done
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}
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mountdirs() {
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awk '$2 !~ /^\/(sys|proc|dev|run)/ && $2 != "/" {print $2}' /proc/mounts
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}
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find_modloop() {
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local dir="$1"
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local kver=$(uname -r)
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local oifs="$IFS"
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IFS=$'\n'
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set -- $(blkid "$dir"/boot/* "$dir"/*)
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IFS="$oifs"
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for line; do
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img=${line%%:*}
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mount "$img" -o loop,ro /.modloop || continue
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if [ -d /.modloop/modules/$kver ]; then
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return 0
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fi
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umount /.modloop
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done
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return 1
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}
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find_backing_file() {
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local dir="$1"
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local dev=$(df -P "$dir" | tail -1 | awk '{print $1}')
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cat /sys/block/${dev#/dev/}/loop/backing_file 2>/dev/null
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}
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start() {
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local modloop= mount_opts= modloop_dldir="/lib"
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init_KOPT
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mkdir -p /.modloop /lib
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case "$KOPT_modloop" in
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http://*|https://*|ftp://*)
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modloop=$modloop_dldir/${KOPT_modloop##*/}
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[ ! -f "$modloop" ] && wget -P "$modloop_dldir" "$KOPT_modloop"
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;;
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*)
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for dir in $(mountdirs); do
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if [ -f "$dir"/$KOPT_modloop ]; then
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modloop="$dir/${KOPT_modloop##/}"
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alpine_mnt="$dir"
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break
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fi
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done
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;;
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esac
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ebegin "Mounting modloop $modloop"
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if [ -n "$modloop" ]; then
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mount -o loop,ro $modloop /.modloop
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eend $? || return 1
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else
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for dir in $(mountdirs); do
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if find_modloop "$dir"; then
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alpine_mnt="$dir"
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break
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fi
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done
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if [ -d /.modloop/modules/$(uname -r) ]; then
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eend 0
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else
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eend 1 || return 1
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fi
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fi
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#use overlayfs if available and configured
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if grep -q -w "overlay$" /proc/filesystems && [ ! -z ${unionfs_size+x} ]; then
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ewarn "Use of unionfs_size is deprecated use overlay_size instead"
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overlay_size="$unionfs_size"
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fi
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if grep -q -w "overlay$" /proc/filesystems && [ -n "$overlay_size" ]; then
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ebegin "OverlayFS detected, mounting modloop rw"
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[ "$overlay_size" != 0 ] && mount_ops="-o size=$overlay_size"
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mkdir -p /.modoverlayfs /lib/modules
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mount -t tmpfs $mount_ops tmpfs /.modoverlayfs
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mkdir -p /.modoverlayfs/modules /.modoverlayfs/work
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mount -t overlay -o upperdir=/.modoverlayfs/modules,lowerdir=/.modloop/modules,workdir=/.modoverlayfs/work overlay /lib/modules
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eend $? || return 1
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else
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rm -rf /lib/modules && ln -sf /.modloop/modules /lib/
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fi
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# copy firmware if there are any
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if [ -d $alpine_mnt/firmware ]; then
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ebegin "Copying firmware from $alpine_mnt/firmware"
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cp -R -a $alpine_mnt/firmware /lib/
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eend $?
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elif [ -d /lib/modules/firmware ]; then
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rmdir /lib/firmware 2>/dev/null \
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&& ln -s /lib/modules/firmware /lib/
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fi
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return 0
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}
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stop() {
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local ret=0
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local mnt; for mnt in /lib/modules /.modoverlayfs /.modloop; do
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if mountinfo --quiet "$mnt"; then
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ebegin "Unmounting $mnt"
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umount -d "$mnt" || ret=1
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fi
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done
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eend $ret || return 1
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}
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