+#!/bin/sh
+
+#set -x
+
+ROOTMOUNTPT=/media/realroot
+REALMOUNT=/bin/mount.busybox
+UNIONMOUNT=$0
+INCDIRS="^/media/\|^/mnt/"
+DEVICE="\/dev\/"
+
+newargs=""
+
+ONESHIFTARGS='aVhvfFilnsrw'
+TWOSHIFTARGS="pLUtOo"
+IGNOREARGS='--bind --move'
+
+resolvelink () {
+ if test -h $1; then
+ echo `readlink $1`
+ else
+ echo $1
+ fi
+}
+
+# Retrieves arguments/mount-point
+for var in $@; do
+ if [ -z "$SKIP" ]; then
+ if echo $var | grep -q "^-.*"; then
+ if echo $var | grep -q "[$TWOSHIFTARGS]"; then
+ SKIP="yes"
+ fi
+ if echo $var | grep -q "^-[^- ]*a"; then
+ DO_FSTAB="yes"
+ fi
+ ARGS="$ARGS $var"
+ else
+ if [ -z "$MOUNT_POINT" ]; then
+ MOUNT_POINT=$var
+ else
+ DEV_PATH="$MOUNT_POINT"
+ MOUNT_POINT="$var"
+ fi
+ fi
+ else
+ ARGS="$ARGS $var"
+ unset SKIP
+ fi
+done
+
+# Parse fstab if -a is used
+if ! [ -z "$DO_FSTAB" ]; then
+ # FIXME: This doesn't handle -t or -O
+ awk '/^[^ #]/ {print "-t " $3 " -o " $4 " " $1 " " $2}' /etc/fstab |
+ while read line; do
+ ${UNIONMOUNT} $line
+ done
+ exit 0
+fi
+
+# Get mount-point for device name, if device name is given
+if echo "$MOUNT_POINT" | grep -q "^${DEVICE}"; then
+ MOUNT_POINT_TEMP=`echo $MOUNT_POINT | sed -e "s/\//\\\\\\\\\//g"`
+ NEW_MOUNT_POINT=`awk "/$MOUNT_POINT_TEMP/ {print "'$2'"}" /etc/fstab`
+ if ! [ -z "$NEW_MOUNT_POINT" ]; then
+ MOUNT_POINT=$NEW_MOUNT_POINT
+ fi
+fi
+
+if ! (echo "$MOUNT_POINT" | grep -q "$INCDIRS"||[ "$MOUNT_POINT" = "/" ]); then
+ exec ${REALMOUNT} $@
+fi
+
+# Replace requests to mount '/' (from init scripts and such)
+# with mount ROOTMOUNTPT (the real-root mount point for the
+# unionfs'd system).
+packagedir=""
+if ([ "$MOUNT_POINT" = "/" ]||[ "$MOUNT_POINT" = "${ROOTMOUNTPT}" ]); then
+ MOUNT_POINT=${ROOTMOUNTPT}
+else
+ PACKAGE_DIR="/packages"
+fi
+
+# Finally, mount and union-mount
+if ${REALMOUNT} $ARGS $DEV_PATH $MOUNT_POINT; then
+ if mkdir -p $MOUNT_POINT$PACKAGE_DIR; then
+ unionctl /. --add --after ${ROOTMOUNTPT} --mode rw `resolvelink $MOUNT_POINT`$PACKAGE_DIR
+ fi
+fi
+#!/bin/sh
+
+#set -x
+
+ROOTMOUNTPT=/media/realroot
+REALUMOUNT=/bin/umount.busybox
+UNIONUMOUNT=$0
+INCDIRS="^/media/\|^/mnt/"
+DEVICE="\/dev\/"
+
+newargs=""
+
+ONESHIFTARGS='adflnrv'
+TWOSHIFTARGS="tO"
+
+resolvelink () {
+ if test -h $1; then
+ echo `readlink $1`
+ else
+ echo $1
+ fi
+}
+
+# Retrieves arguments/mount-point
+for var in $@; do
+ if [ -z "$SKIP" ]; then
+ if echo $var | grep -q "^-.*"; then
+ if echo $var | grep -q "[$TWOSHIFTARGS]"; then
+ SKIP="yes"
+ fi
+ if echo $var | grep -q "^-[^- ]*a"; then
+ DO_FSTAB="yes"
+ fi
+ ARGS="$ARGS $var"
+ else
+ if [ -z "$MOUNT_POINT" ]; then
+ MOUNT_POINT=$var
+ else
+ # This really shouldn't happen when unmounting
+ DEV_PATH="$MOUNT_POINT"
+ MOUNT_POINT="$var"
+ fi
+ fi
+ else
+ ARGS="$ARGS $var"
+ unset SKIP
+ fi
+done
+
+# Parse fstab if -a is used
+if ! [ -z "$DO_FSTAB" ]; then
+ # FIXME: This doesn't handle -t or -O
+ awk '/^[^ #]/ {print $1}' /etc/fstab |
+ while read line; do
+ ${UNIONUMOUNT} $line
+ done
+ exit 0
+fi
+
+# Get mount-point for device name, if device name is given
+if echo "$MOUNT_POINT" | grep -q "^${DEVICE}"; then
+ MOUNT_POINT_TEMP=`echo $MOUNT_POINT | sed -e "s/\//\\\\\\\\\//g"`
+ NEW_MOUNT_POINT=`awk "/$MOUNT_POINT_TEMP/ {print "'$2'"}" /etc/fstab`
+ if ! [ -z "$NEW_MOUNT_POINT" ]; then
+ MOUNT_POINT=$NEW_MOUNT_POINT
+ fi
+fi
+
+if ! (echo "$MOUNT_POINT" | grep -q "$INCDIRS"||[ "$MOUNT_POINT" = "/" ]); then
+ exec ${REALMOUNT} $@
+fi
+
+# Replace requests to mount '/' (from init scripts and such)
+# with mount ROOTMOUNTPT (the real-root mount point for the
+# unionfs'd system).
+packagedir=""
+if ([ "$MOUNT_POINT" = "/" ]||[ "$MOUNT_POINT" = "${ROOTMOUNTPT}" ]); then
+ MOUNT_POINT=${ROOTMOUNTPT}
+else
+ PACKAGE_DIR="/packages"
+fi
+
+# Finally, umount and union-umount
+unionctl /. --remove `resolvelink $MOUNT_POINT`$PACKAGE_DIR
+exec ${REALUMOUNT} $ARGS $MOUNT_POINT
+
+++ /dev/null
-LICENSE = "GPL"
-
-DESCRIPTION = "Tools for administering a system that utilises unionroot."
-DEPENDS = "ipkg-collateral unionroot busybox"
-RDEPENDS = "ipkg-collateral unionroot busybox"
-SECTION = "base"
-PRIORITY = "optional"
-MAINTAINER = "Chris Lord <cwiiis@handhelds.org>"
-PR = "r1"
-
-SRC_URI = "file://mount.unionroot \
- file://umount.unionroot"
-
-do_install () {
- install -d ${D}/bin
- install -m 0755 ${WORKDIR}/mount.unionroot ${D}/bin/
- install -m 0755 ${WORKDIR}/umount.unionroot ${D}/bin/
-}
-
-pkg_postinst () {
- update-alternatives --install /bin/mount mount /bin/mount.unionroot 100
- update-alternatives --install /bin/umount umount /bin/umount.unionroot 100
-
- # Alter /etc/ipkg.conf
- mv $D/${sysconfdir}/ipkg.conf $D/${sysconfdir}/ipkg.conf.old
- awk 'BEGIN { print "# Altered by unionroot" }
- { if ( $3 == "/" )
- {
- print $1 " " $2 " /media/realroot"
- }
- else
- {
- print $0
- }
- }' $D/${sysconfdir}/ipkg.conf.old > $D/${sysconfdir}/ipkg.conf
-}
-
-pkg_prerm () {
- update-alternatives --remove mount /bin/mount.unionroot
- update-alternatives --remove umount /bin/umount.unionroot
-}
-
#!/bin/sh
+PATH=/usr/bin:/usr/sbin:/bin:/sbin
INIT=/sbin/init.sysvinit
-#OVERLAYS=/media/ram /media/cf /media/card
ROOTBACKUP=/media/realroot
UNION=/media/union
-PATH=/usr/bin:/usr/sbin:/bin:/sbin
-
-if ! test -e ${INIT}; then
- echo >&2 "ERROR: ${INIT} not found"
- exit 1
-fi
-if test x"$*" != "x"; then
- exec ${INIT} $*
+if ! which unionctl; then
+ echo >&2 "ERROR: Package unionfs-utils not installed!"
+ exec ${INIT} $@
fi
-if ! which unionctl; then
- exec ${INIT}
+# For shutdown
+if ! [ -z "$@" ]; then
+ exec ${INIT} $@
fi
-nodupmount () {
- opts=""
- type=""
- while true; do
- if test "$1" = "-o"; then
- shift
- opts="-o $1"
- shift
- elif test "$1" = "-t"; then
- shift
- type="$1"
- shift
- else
- break
- fi
- done
- if test x"$2" = "x"; then
- mountpt="$1"
- else
- device="$1"
- mountpt="$2"
- fi
- mountmatch="^[^ ]+ $mountpt $type"
- # echo "NOTE: grep -E -q \"$mountmatch\" /proc/mounts"
- if grep -E -q "$mountmatch" /proc/mounts; then
- return 0;
- fi
- if test x"$type" != "x"; then
- type="-t $type"
- fi
- echo >&2 "NOTE: executing mount $type $opts $device $mountpt"
- mkdir -p $mountpt
- /bin/mount.busybox $type $opts $device $mountpt
- ret="$?"
- if test "$ret" = "0"; then
- wemounted="$wemounted $mountpt"
- fi
- return $ret
-}
+mount.busybox /proc
+insmod /lib/modules/`uname -r`/kernel/fs/unionfs.o
+mount.busybox -t unionfs -o dirs=/.=rw,setattr=all none ${UNION}
+umount.busybox /proc
-#set -x
-wemounted=""
-(
- set -e
- /bin/mount.busybox /proc
- insmod /lib/modules/`uname -r`/kernel/fs/unionfs.o
- nodupmount -t unionfs -o dirs=/.=rw none ${UNION}
-# nodupmount -o bind / ${UNION}/${ROOTBACKUP}
-# for OVERLAY in ${OVERLAYS}; do
-# nodupmount ${OVERLAY}
-# union-ctl /. --add --mode rw ${OVERLAY}
-# nodupmount -o bind ${OVERLAY} ${UNION}/${OVERLAY}
-# done
- /bin/umount.busybox /proc
-# nodupmount -o bind /proc ${UNION}/proc
-# nodupmount -o bind / ${ROOTBACKUP}
-) || (
- echo >&2 "ERROR: unable to setup mounts for chroot";
- if test x"$wemounted" != "x"; then
- # cleanup
- for mount in $wemounted; do
- /bin/umount.busybox $mount
- done
- fi
- exec ${INIT}
-)
cd ${UNION}
pivot_root . ./${ROOTBACKUP}
exec chroot . ${INIT}
+++ /dev/null
-LICENSE = "GPL"
-
-DESCRIPTION = "Provides an init script that changes the root file-system to unionfs."
-DEPENDS = "busybox base-files"
-RDEPENDS = "busybox base-files"
-SECTION = "base"
-PRIORITY = "optional"
-MAINTAINER = "Chris Lord <cwiiis@handhelds.org>"
-
-PR = "r2"
-
-SRC_URI = "file://init.unionroot"
-
-inherit update-alternatives
-
-ALTERNATIVE_NAME = "init"
-ALTERNATIVE_LINK = "/sbin/init"
-ALTERNATIVE_PATH = "/sbin/init.unionroot"
-ALTERNATIVE_PRIORITY = "100"
-
-do_install () {
- install -d ${D}/sbin
- install -m 0755 ${WORKDIR}/init.unionroot ${D}/sbin/
-}
-
-pkg_postinst () {
- # Alter /etc/fstab
- mv $D/${sysconfdir}/fstab $D/${sysconfdir}/fstab.old
- awk 'BEGIN { print "# Altered by unionroot" }
- { if ( $2 == "/" )
- {
- print $1 "\t/media/realroot\t" $3 "\t" $4 "\t" $5 "\t" $6
- }
- else
- {
- print $0
- }
- }' $D/${sysconfdir}/fstab.old > $D/${sysconfdir}/fstab
-}
-
git.openpandora.org / openembedded.git / commitdiff