diff options
Diffstat (limited to 'main/openrc/modloop.initd')
| -rw-r--r-- | main/openrc/modloop.initd | 147 |
1 files changed, 62 insertions, 85 deletions
diff --git a/main/openrc/modloop.initd b/main/openrc/modloop.initd index 2e7331be112..6bd2e8a2f53 100644 --- a/main/openrc/modloop.initd +++ b/main/openrc/modloop.initd @@ -11,115 +11,89 @@ depend() { # read kernel options init_KOPT() { eval set -- $(cat /proc/cmdline 2>/dev/null) - # in case syslinux does not set BOOT_IMAGE - KOPT_BOOT_IMAGE="${1}" for opt; do case "$opt" in - alpine_dev=*|modloop=*|BOOT_IMAGE=*) + modloop=*) eval "KOPT_${opt%%=*}='${opt#*=}'" ;; - esac + esac done } -resolve_dev() { - case "$1" in - UUID=*|LABEL=*) findfs "$1";; - *) readlink -f "$1";; - esac +mountdirs() { + awk '$2 !~ /^\/(sys|proc|dev|run)/ && $2 != "/" {print $2}' /proc/mounts } -find_mnt() { - local search_dev="$1" fstab="$2" - local dev mnt fs mntopts chk - case "$search_dev" in - UUID=*|LABEL=*|/dev/*);; - nfs) search_dev="${KOPT_alpine_dev#nfs:}";; - *) search_dev=/dev/$search_dev;; - esac - local search_real_dev=$(resolve_dev $search_dev) - while read dev mnt fs mntopts chk; do - local real_dev=$(resolve_dev $dev) - local i j - for i in "$search_dev" "$search_real_dev"; do - [ -z "$i" ] && continue - for j in "$dev" "$real_dev"; do - [ -z "$j" ] && continue - if [ "$i" = "$j" ]; then - echo "$mnt" - return - fi - done - done - done < $fstab 2>/dev/null +find_modloop() { + local dir="$1" + local kver=$(uname -r) + local oifs="$IFS" + IFS=$'\n' + set -- $(blkid "$dir"/boot/* "$dir"/*) + IFS="$oifs" + for line; do + img=${line%%:*} + mount "$img" -o loop,ro /.modloop || continue + if [ -d /.modloop/modules/$kver ]; then + return 0 + fi + umount /.modloop + done + return 1 } -# initialies: alpine_dev, alpine_mnt, alpine_fs, alpine_mounted -find_media() { - init_KOPT - [ -z "$KOPT_alpine_dev" ] && return 0 - alpine_mounted= - alpine_dev=${KOPT_alpine_dev%%:*} - alpine_fs=${KOPT_alpine_dev#*:} - [ "$alpine_fs" = "$KOPT_alpine_dev" ] && unset alpine_fs - # first we check if alpine_dev is mounted and use this - alpine_mnt=$(find_mnt $alpine_dev /proc/mounts) - if [ -z "$alpine_mnt" ]; then - # then we check fstab - alpine_mnt=$(find_mnt $alpine_dev /etc/fstab) - else - alpine_mounted=yes +find_backing_file() { + local dir="$1" + local dev=$(df -P "$dir" | tail -1 | awk '{print $1}') + cat /sys/block/${dev#/dev/}/loop/backing_file 2>/dev/null +} + +find_alpine_mnt() { + local img="$(find_backing_file $1)" + if [ -n "$img" ]; then + df -P "$img" | tail -1 | awk '{print $6}' fi - # finally we fallback to /media/<devicename> - [ -z "$alpine_mnt" ] && alpine_mnt=/media/$alpine_dev } start() { local modloop= mount_opts= modloop_dldir="/lib" - find_media - + mkdir -p /.modloop /lib case "$KOPT_modloop" in http://*|https://|ftp://*) wget -P "$modloop_dldir" "$KOPT_modloop" \ && modloop=$modloop_dldir/$(basename $KOPT_modloop) ;; + "") + ewarn "WARNING! modloop boot option is missing." + ;; *) - if [ -z "$alpine_dev" ]; then - return 0 - fi - if [ -z "$alpine_mounted" ]; then - ebegin "Mounting $alpine_mnt" - [ -n "$alpine_fs" ] && mount_opts="-t $alpine_fs" - mount $mount_opts /dev/$alpine_dev $alpine_mnt 2>/dev/null - eend $? || return 1 - fi - - bootimagedir=${KOPT_BOOT_IMAGE%/*} - bootdir=${alpine_mnt}${bootimagedir} - kver=$(uname -r) - case $kver in - *-rc[0-9]) kflavor=vanilla;; - *-[a-z]*) kflavor=${kver##*-};; - *) kflavor=vanilla;; - esac - for modloop in ${alpine_mnt}$KOPT_modloop \ - ${bootdir}/modloop-$kver \ - ${bootdir}/modloop-$kflavor \ - ${bootdir}/modloop \ - ${alpine_mnt}/boot/modloop-$kver \ - ${alpine_mnt}/boot/modloop-$kflavor \ - ${alpine_mnt}/boot/modloop \ - ${alpine_mnt}$KOPT_BOOT_IMAGE.modloop.*; do - - [ -f "$modloop" -o -n "$KOPT_modloop" ] && break + for dir in $(mountdirs); do + if [ -f "$dir"/$KOPT_modloop ]; then + modloop="$dir/${KOPT_modloop##/}" + alpine_mnt="$dir" + break + fi done ;; esac ebegin "Mounting modloop $modloop" - mkdir -p /.modloop /lib - mount -o loop,ro $fs_opt $modloop /.modloop - eend $? || return 1 + if [ -n "$modloop" ]; then + mount -o loop,ro $modloop /.modloop + eend $? || return 1 + else + for dir in $(mountdirs); do + if find_modloop "$dir"; then + alpine_mnt="$dir" + break + fi + done + if [ -d /.modloop/modules/$(uname -r) ]; then + eend 0 + else + eend 1 || return 1 + fi + fi #use unionfs is available and configured if grep -q -w "unionfs$" /proc/filesystems && [ -n "$unionfs_size" ]; then @@ -146,14 +120,17 @@ start() { stop() { local rc=0 - find_media - [ -z "$alpine_dev" ] && return 0 + alpine_mnt=$(find_alpine_mnt /.modloop) + if mountinfo --quiet /.modunisonfs/modules && mountinfo --quiet /lib/modules; then + umount /lib/modules + umount /.modunisonfs/modules + fi if mountinfo --quiet /.modloop; then ebegin "Unmounting /.modloop" umount -d /.modloop eend $? || return 1 fi - if mountinfo --quiet $alpine_mnt; then + if [ -n "$alpine_mnt" ] && mountinfo --quiet $alpine_mnt; then ebegin "Unmounting $alpine_mnt" umount $alpine_mnt eend $? |