Magic Mount Total Re-factor Part 2
1. It seems that many part of the system is upset about symlinks, revert to bind mounts 2. New system and vendor mirror implementation found, no need to copy anything 3. Thanks to the new mirror implementation, adding new items to /system and /vendor is now possible 4. Re-written some coding style
This commit is contained in:
topjohnwu
parent
c07e9ac29d
commit
1e3586621b
2
.gitignore
vendored
2
.gitignore
vendored
@ -11,7 +11,7 @@ uninstaller/arm/*
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uninstaller/arm64/*
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uninstaller/x86/*
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uninstaller/x64/*
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zipsigntools/zipadjust
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ziptools/zipadjust
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# Generated scripts
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zip_static/common/magic_mask.sh
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@ -47,8 +47,8 @@ unblock() {
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run_scripts() {
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BASE=$MOUNTPOINT
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for MOD in $BASE/* ; do
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if [ ! -f "$MOD/disable" ]; then
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if [ -f "$MOD/$1.sh" ]; then
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if [ ! -f $MOD/disable ]; then
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if [ -f $MOD/$1.sh ]; then
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chmod 755 $MOD/$1.sh
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chcon "u:object_r:system_file:s0" "$MOD/$1.sh"
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log_print "$1: $MOD/$1.sh"
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@ -60,8 +60,8 @@ run_scripts() {
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loopsetup() {
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LOOPDEVICE=
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for DEV in $(ls /dev/block/loop*); do
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if [ `losetup $DEV $1 >/dev/null 2>&1; echo $?` -eq 0 ]; then
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for DEV in `ls /dev/block/loop*`; do
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if losetup $DEV $1; then
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LOOPDEVICE=$DEV
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break
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fi
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@ -77,44 +77,39 @@ target_size_check() {
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}
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travel() {
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cd "$TRAVEL_ROOT/$1"
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if [ -f ".replace" ]; then
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rm -rf "$MOUNTINFO/$1"
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mktouch "$MOUNTINFO/$1" "$TRAVEL_ROOT"
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cd $TRAVEL_ROOT/$1
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if [ -f .replace ]; then
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rm -rf $MOUNTINFO/$1
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mktouch $MOUNTINFO/$1 $TRAVEL_ROOT
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else
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for ITEM in * ; do
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if [ ! -e "/$1/$ITEM" ]; then
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if [ ! -e /$1/$ITEM ]; then
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# New item found
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if [ "$1" = "system" ]; then
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# We cannot add new items to /system root, delete it
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rm -rf "$ITEM"
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else
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# If we are in a higher level, delete the lower levels
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rm -rf "$MOUNTINFO/dummy/$1"
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# Mount the dummy parent
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mktouch "$MOUNTINFO/dummy/$1"
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# If we are in a higher level, delete the lower levels
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rm -rf $MOUNTINFO/dummy/$1
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# Mount the dummy parent
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mktouch $MOUNTINFO/dummy/$1
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if [ -d "$ITEM" ]; then
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# Create new dummy directory and mount it
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mkdir -p "$DUMMDIR/$1/$ITEM"
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mktouch "$MOUNTINFO/$1/$ITEM" "$TRAVEL_ROOT"
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elif [ -L "$ITEM" ]; then
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# Symlinks are small, copy them
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mkdir -p "$DUMMDIR/$1" 2>/dev/null
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cp -afc "$ITEM" "$DUMMDIR/$1/$ITEM"
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else
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# Create new dummy file and mount it
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mktouch "$DUMMDIR/$1/$ITEM"
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mktouch "$MOUNTINFO/$1/$ITEM" "$TRAVEL_ROOT"
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fi
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if [ -d $ITEM ]; then
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# Create new dummy directory and mount it
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mkdir -p $DUMMDIR/$1/$ITEM
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mktouch $MOUNTINFO/$1/$ITEM $TRAVEL_ROOT
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elif [ -L $ITEM ]; then
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# Symlinks are small, copy them
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mkdir -p $DUMMDIR/$1 2>/dev/null
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cp -afc $ITEM $DUMMDIR/$1/$ITEM
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else
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# Create new dummy file and mount it
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mktouch $DUMMDIR/$1/$ITEM
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mktouch $MOUNTINFO/$1/$ITEM $TRAVEL_ROOT
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fi
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else
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if [ -d "$ITEM" ]; then
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if [ -d $ITEM ]; then
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# It's an directory, travel deeper
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(travel "$1/$ITEM")
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elif [ ! -L "$ITEM" ]; then
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(travel $1/$ITEM)
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elif [ ! -L $ITEM ]; then
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# Mount this file
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mktouch "$MOUNTINFO/$1/$ITEM" "$TRAVEL_ROOT"
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mktouch $MOUNTINFO/$1/$ITEM $TRAVEL_ROOT
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fi
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fi
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done
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@ -122,55 +117,33 @@ travel() {
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}
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clone_dummy() {
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for ITEM in $1/* ; do
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if [ ! -e "$TRAVEL_ROOT$ITEM" ]; then
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if [ ! -d "$MOUNTINFO$ITEM" ]; then
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if [ -L "$ITEM" ]; then
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# Copy original symlink
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cp -afc "$ITEM" "$TRAVEL_ROOT$ITEM"
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else
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# Link to mirror item
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ln -s "$MIRRDIR$ITEM" "$TRAVEL_ROOT$ITEM"
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fi
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for ITEM in $MIRRDIR$1/* ; do
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REAL=${ITEM#$MIRRDIR}
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if [ ! -e $MOUNTINFO$REAL ]; then
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if [ -L $ITEM ]; then
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# Copy original symlink
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cp -afc $ITEM $DUMMDIR$REAL
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else
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# Need to clone a skeleton
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(clone_dummy "$ITEM")
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if [ -d $ITEM ]; then
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mkdir -p $DUMMDIR$REAL
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else
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mktouch $DUMMDIR$REAL
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fi
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# Mount the mirror
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mktouch $MOUNTINFO/mirror$REAL
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fi
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elif [ -d "$TRAVEL_ROOT$ITEM" ]; then
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# Need to clone a skeleton
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(clone_dummy "$ITEM")
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elif [ -d $MOUNTINFO$REAL ]; then
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# Need to clone deeper
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mkdir -p $DUMMDIR$REAL
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(clone_dummy $REAL)
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fi
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done
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}
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make_copy_image() {
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TARGETSIZE=$2
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if [ -z $TARGETSIZE ]; then
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TARGETSIZE=`du -s $1 | awk '{print $1}'`
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TARGETSIZE=$((($TARGETSIZE / 10240 + 2) * 10240))
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fi
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TARGETIMG=/data/magisk/${1//\//_}.img
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make_ext4fs -l ${TARGETSIZE}K -a $1 $TARGETIMG
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loopsetup $TARGETIMG
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mkdir -p $MIRRDIR/copy$1
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mount -t ext4 -o rw,noatime $LOOPDEVICE $MIRRDIR/copy$1
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return $?
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}
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mount_copy_image() {
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TARGETIMG=/data/magisk/${1//\//_}.img
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umount $MIRRDIR/copy$1
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rm -rf $MIRRDIR/copy
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losetup -d $LOOPDEVICE 2>/dev/null
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loopsetup $TARGETIMG
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mount -t ext4 -o rw,noatime $LOOPDEVICE $1
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return $?
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}
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bind_mount() {
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if [ -e "$1" -a -e "$2" ]; then
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if [ -e $1 -a -e $2 ]; then
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mount -o bind $1 $2
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if [ "$?" -eq "0" ]; then
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if [ $? -eq 0 ]; then
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log_print "Mount: $1"
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else
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log_print "Mount Fail: $1"
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@ -179,9 +152,9 @@ bind_mount() {
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}
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merge_image() {
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if [ -f "$1" ]; then
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if [ -f $1 ]; then
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log_print "$1 found"
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if [ -f "$IMG" ]; then
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if [ -f $IMG ]; then
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log_print "$IMG found, attempt to merge"
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# Handle large images
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@ -207,36 +180,29 @@ merge_image() {
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LOOPMERGE=$LOOPDEVICE
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log_print "$LOOPMERGE $1"
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if [ ! -z "$LOOPDATA" ]; then
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if [ ! -z "$LOOPMERGE" ]; then
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# if loop devices have been setup, mount images
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OK=true
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if [ ! -z $LOOPDATA -a ! -z $LOOPMERGE ]; then
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# if loop devices have been setup, mount images
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OK=false
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mount -t ext4 -o rw,noatime $LOOPDATA /cache/data_img && \
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mount -t ext4 -o rw,noatime $LOOPMERGE /cache/merge_img && \
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OK=true
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if [ `mount -t ext4 -o rw,noatime $LOOPDATA /cache/data_img >/dev/null 2>&1; echo $?` -ne 0 ]; then
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OK=false
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fi
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if [ `mount -t ext4 -o rw,noatime $LOOPMERGE /cache/merge_img >/dev/null 2>&1; echo $?` -ne 0 ]; then
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OK=false
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fi
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if $OK; then
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# Merge (will reserve selinux contexts)
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cd /cache/merge_img
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for MOD in *; do
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if [ "$MOD" != "lost+found" ]; then
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log_print "Merging: $MOD"
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rm -rf /cache/data_img/$MOD
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fi
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done
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cp -afc . /cache/data_img
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log_print "Merge complete"
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cd /
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fi
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umount /cache/data_img
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umount /cache/merge_img
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if $OK; then
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# Merge (will reserve selinux contexts)
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cd /cache/merge_img
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for MOD in *; do
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if [ "$MOD" != "lost+found" ]; then
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log_print "Merging: $MOD"
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rm -rf /cache/data_img/$MOD
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fi
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done
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cp -afc . /cache/data_img
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log_print "Merge complete"
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cd /
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fi
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umount /cache/data_img
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umount /cache/merge_img
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fi
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losetup -d $LOOPDATA
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@ -263,16 +229,16 @@ case $1 in
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log_print "** Magisk post-fs mode running..."
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# Cleanup previous version stuffs...
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# Cleanup legacy stuffs...
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rm -rf /cache/magisk /cache/magisk_merge /cache/magiskhide.log
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if [ -d "/cache/magisk_mount" ]; then
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if [ -d /cache/magisk_mount ]; then
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log_print "* Mounting cache files"
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find /cache/magisk_mount -type f 2>/dev/null | while read ITEM ; do
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chmod 644 "$ITEM"
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chcon "u:object_r:system_file:s0" "$ITEM"
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TARGET="${ITEM#/cache/magisk_mount}"
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bind_mount "$ITEM" "$TARGET"
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chmod 644 $ITEM
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chcon "u:object_r:system_file:s0" $ITEM
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TARGET=${ITEM#/cache/magisk_mount}
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bind_mount $ITEM $TARGET
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done
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fi
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@ -280,15 +246,9 @@ case $1 in
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;;
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post-fs-data )
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if [ `mount | grep " /data " >/dev/null 2>&1; echo $?` -ne 0 ]; then
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# /data not mounted yet, we will be called again later
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unblock
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fi
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if [ `mount | grep " /data " | grep "tmpfs" >/dev/null 2>&1; echo $?` -eq 0 ]; then
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# /data not mounted yet, we will be called again later
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unblock
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fi
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# /data not mounted yet
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! mount | grep " /data " && unblock
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mount | grep " /data " | grep "tmpfs" && unblock
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# Don't run twice
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if [ "`getprop magisk.restart_pfsd`" != "1" ]; then
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@ -326,32 +286,29 @@ case $1 in
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# Mount magisk.img
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[ ! -d $MOUNTPOINT ] && mkdir -p $MOUNTPOINT
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if [ `cat /proc/mounts | grep $MOUNTPOINT >/dev/null 2>&1; echo $?` -ne 0 ]; then
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if ! mount | grep $MOUNTPOINT; then
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loopsetup $IMG
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if [ ! -z "$LOOPDEVICE" ]; then
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mount -t ext4 -o rw,noatime $LOOPDEVICE $MOUNTPOINT
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[ ! -z $LOOPDEVICE ] && mount -t ext4 -o rw,noatime $LOOPDEVICE $MOUNTPOINT
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if [ $? -ne 0 ]; then
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log_print "magisk.img mount failed, nothing to do :("
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unblock
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fi
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fi
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if [ `cat /proc/mounts | grep $MOUNTPOINT >/dev/null 2>&1; echo $?` -ne 0 ]; then
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log_print "magisk.img mount failed, nothing to do :("
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unblock
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fi
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# Remove empty directories, legacy paths, symlinks, old temporary images
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find $MOUNTPOINT -type d -depth ! -path "*core*" -exec rmdir {} \; 2>/dev/null
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rm -rf $COREDIR/bin $COREDIR/dummy $COREDIR/mirror /data/magisk/*.img
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# Remove modules that is labeled to be removed
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for MOD in $MOUNTPOINT/* ; do
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if [ -f "$MOD/remove" ] || [ "$MOD" = "zzsupersu" ]; then
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if [ -f $MOD/remove ] || [ $MOD = zzsupersu ]; then
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log_print "Remove module: $MOD"
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rm -rf $MOD
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fi
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done
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# Unmount, shrink, remount
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if [ `umount $MOUNTPOINT >/dev/null 2>&1; echo $?` -eq 0 ]; then
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if umount $MOUNTPOINT; then
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losetup -d $LOOPDEVICE
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target_size_check $IMG
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NEWDATASIZE=$(((curUsedM / 32 + 2) * 32))
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@ -360,10 +317,8 @@ case $1 in
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resize2fs $IMG ${NEWDATASIZE}M
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fi
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loopsetup $IMG
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if [ ! -z "$LOOPDEVICE" ]; then
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mount -t ext4 -o rw,noatime $LOOPDEVICE $MOUNTPOINT
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fi
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if [ `cat /proc/mounts | grep $MOUNTPOINT >/dev/null 2>&1; echo $?` -ne 0 ]; then
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[ ! -z $LOOPDEVICE ] && mount -t ext4 -o rw,noatime $LOOPDEVICE $MOUNTPOINT
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if [ $? -ne 0 ]; then
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log_print "magisk.img mount failed, nothing to do :("
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unblock
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fi
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@ -376,7 +331,7 @@ case $1 in
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# Travel through all mods
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for MOD in $MOUNTPOINT/* ; do
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if [ -f "$MOD/auto_mount" -a -d "$MOD/system" -a ! -f "$MOD/disable" ]; then
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if [ -f $MOD/auto_mount -a -d $MOD/system -a ! -f $MOD/disable ]; then
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TRAVEL_ROOT=$MOD
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(travel system)
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fi
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@ -386,130 +341,80 @@ case $1 in
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find $TMPDIR -exec chcon -h "u:object_r:system_file:s0" {} \;
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# linker(64), t*box required for bin
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if [ -f "$MOUNTINFO/dummy/system/bin" ]; then
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if [ -f $MOUNTINFO/dummy/system/bin ]; then
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cp -afc /system/bin/linker* /system/bin/t*box $DUMMDIR/system/bin/
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fi
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BACKUPLIBS=false
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DISABLEHIDE=false
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# Libraries are full of issues, copy a full clone to data
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# lib
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if [ -f "$MOUNTINFO/dummy/system/lib" ]; then
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BACKUPLIBS=true
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make_copy_image /system/lib
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cp -afc /system/lib/. $MIRRDIR/copy/system/lib
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cp -afc $DUMMDIR/system/lib/. $MIRRDIR/copy/system/lib
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mount_copy_image /system/lib
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rm -f $MOUNTINFO/dummy/system/lib
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fi
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# lib64
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if [ -f "$MOUNTINFO/dummy/system/lib64" ]; then
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BACKUPLIBS=true
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make_copy_image /system/lib64
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cp -afc /system/lib64/. $MIRRDIR/copy/system/lib64
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cp -afc $DUMMDIR/system/lib64/. $MIRRDIR/copy/system/lib64
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mount_copy_image /system/lib64
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rm -f $MOUNTINFO/dummy/system/lib64
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fi
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# Whole vendor
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if [ -f "$MOUNTINFO/dummy/system/vendor" ]; then
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BACKUPLIBS=true
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LIBSIZE=`du -s /vendor/lib | awk '{print $1}'`
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if [ -d /vendor/lib64 ]; then
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LIB64SIZE=`du -s /vendor/lib64 | awk '{print $1}'`
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VENDORLIBSIZE=$(((($LIBSIZE + $LIB64SIZE) / 10240 + 2) * 10240))
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else
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VENDORLIBSIZE=$((($LIBSIZE / 10240 + 2) * 10240))
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fi
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make_copy_image /vendor $VENDORLIBSIZE
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# Copy lib/lib64
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mkdir -p $MIRRDIR/copy/vendor/lib
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cp -afc /vendor/lib/. $MIRRDIR/copy/vendor/lib
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cp -afc $DUMMDIR/system/vendor/lib/. $MIRRDIR/copy/vendor/lib 2>/dev/null
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if [ -d /vendor/lib64 ]; then
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mkdir -p $MIRRDIR/copy/vendor/lib64
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cp -afc /vendor/lib64/. $MIRRDIR/copy/vendor/lib64
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cp -afc $DUMMDIR/system/vendor/lib64/. $MIRRDIR/copy/vendor/lib64 2>/dev/null
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fi
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cp -afc $DUMMDIR/system/vendor/. $MIRRDIR/copy/vendor
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TRAVEL_ROOT=$MIRRDIR/copy
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(clone_dummy /vendor)
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# Create vendor mirror
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if [ `mount | grep -c "on /vendor type"` -ne 0 ]; then
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VENDORBLOCK=`mount | grep "on /vendor type" | awk '{print $1}'`
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mkdir -p $MIRRDIR/vendor
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mount -o ro $VENDORBLOCK $MIRRDIR/vendor
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else
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ln -s $MIRRDIR/system/vendor $MIRRDIR/vendor
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fi
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mount_copy_image /vendor
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rm -f $MOUNTINFO/dummy/system/vendor
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fi
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# vendor lib
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if [ -f "$MOUNTINFO/dummy/system/vendor/lib" ]; then
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BACKUPLIBS=true
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make_copy_image /system/vendor/lib
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cp -afc /system/vendor/lib/. $MIRRDIR/copy/system/vendor/lib
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cp -afc $DUMMDIR/system/vendor/lib/. $MIRRDIR/copy/system/vendor/lib
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mount_copy_image /system/vendor/lib
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rm -f $MOUNTINFO/dummy/system/vendor/lib
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fi
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# vendor lib64
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if [ -f "$MOUNTINFO/dummy/system/vendor/lib64" ]; then
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BACKUPLIBS=true
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make_copy_image /system/vendor/lib64
|
||||
cp -afc /system/vendor/lib64/. $MIRRDIR/copy/system/vendor/lib64
|
||||
cp -afc $DUMMDIR/system/vendor/lib64/. $MIRRDIR/copy/system/vendor/lib64
|
||||
mount_copy_image /system/vendor/lib64
|
||||
rm -f $MOUNTINFO/dummy/system/vendor/lib64
|
||||
fi
|
||||
for i in /system /system/lib /system/lib64 /system/vendor /system/vendor/lib /system/vendor/lib64; do
|
||||
[ -f $MOUNTINFO/dummy$1 ] && DISABLEHIDE=true && break
|
||||
done
|
||||
|
||||
# Crash prevention!!
|
||||
$BACKUPLIBS && rm -f $COREDIR/magiskhide/enable 2>/dev/null
|
||||
$DISABLEHIDE && rm -f $COREDIR/magiskhide/enable 2>/dev/null
|
||||
|
||||
# Remove crap folder
|
||||
rm -rf $MOUNTPOINT/lost+found
|
||||
|
||||
# Start doing tasks
|
||||
|
||||
|
||||
# Stage 1
|
||||
TRAVEL_ROOT=$DUMMDIR
|
||||
log_print "* Bind mount dummy system"
|
||||
find $MOUNTINFO/dummy -type f 2>/dev/null | while read ITEM ; do
|
||||
TARGET=${ITEM#$MOUNTINFO/dummy}
|
||||
ORIG="$DUMMDIR$TARGET"
|
||||
(clone_dummy "$TARGET")
|
||||
bind_mount "$ORIG" "$TARGET"
|
||||
done
|
||||
log_print "* Stage 1: Mount system and vendor mirrors"
|
||||
SYSTEMBLOCK=`mount | grep " /system " | awk '{print $1}'`
|
||||
mkdir -p $MIRRDIR/system
|
||||
mount -o ro $SYSTEMBLOCK $MIRRDIR/system
|
||||
if [ `mount | grep -c " /vendor "` -ne 0 ]; then
|
||||
VENDORBLOCK=`mount | grep " /vendor " | awk '{print $1}'`
|
||||
mkdir -p $MIRRDIR/vendor
|
||||
mount -o ro $VENDORBLOCK $MIRRDIR/vendor
|
||||
else
|
||||
ln -s $MIRRDIR/system/vendor $MIRRDIR/vendor
|
||||
fi
|
||||
# Since mirrors always exist, we load libraries from mirrors
|
||||
LD_LIBRARY_PATH=$MIRRDIR/system/lib:$MIRRDIR/vendor/lib
|
||||
[ -d /system/lib64 ] LD_LIBRARY_PATH=$MIRRDIR/system/lib64:$MIRRDIR/vendor/lib64
|
||||
|
||||
# Stage 2
|
||||
log_print "* Bind mount module items"
|
||||
log_print "* Stage 2: Mount dummy skeletons"
|
||||
# Move dummy /system/vendor to /vendor for consistency
|
||||
mv -f $MOUNTINFO/dummy/system/vendor $MOUNTINFO/dummy/vendor 2>/dev/null
|
||||
mv -f $DUMMDIR/system/vendor $DUMMDIR/vendor 2>/dev/null
|
||||
find $MOUNTINFO/dummy -type f 2>/dev/null | while read ITEM ; do
|
||||
TARGET=${ITEM#$MOUNTINFO/dummy}
|
||||
ORIG=$DUMMDIR$TARGET
|
||||
(clone_dummy $TARGET)
|
||||
bind_mount $ORIG $TARGET
|
||||
done
|
||||
|
||||
# Stage 3
|
||||
log_print "* Stage 3: Mount module items"
|
||||
find $MOUNTINFO/system -type f 2>/dev/null | while read ITEM ; do
|
||||
TARGET=${ITEM#$MOUNTINFO}
|
||||
ORIG=`cat $ITEM`$TARGET
|
||||
bind_mount $ORIG $TARGET
|
||||
rm -f $DUMMDIR${TARGET%/*}/.dummy 2>/dev/null
|
||||
done
|
||||
|
||||
# Run scripts
|
||||
# Stage 4
|
||||
log_print "* Stage 4: Execute module scripts"
|
||||
run_scripts post-fs-data
|
||||
|
||||
# Stage 5
|
||||
log_print "* Stage 5: Mount mirrored items back to dummy"
|
||||
find $MOUNTINFO/mirror -type f 2>/dev/null | while read ITEM ; do
|
||||
TARGET=${ITEM#$MOUNTINFO/mirror}
|
||||
ORIG=$MIRRDIR$TARGET
|
||||
bind_mount $ORIG $TARGET
|
||||
done
|
||||
|
||||
# Bind hosts for Adblock apps
|
||||
if [ -f "$COREDIR/hosts" ]; then
|
||||
if [ -f $COREDIR/hosts ]; then
|
||||
log_print "* Enabling systemless hosts file support"
|
||||
bind_mount $COREDIR/hosts /system/etc/hosts
|
||||
fi
|
||||
|
||||
# Expose busybox
|
||||
if [ -f "$COREDIR/busybox/enable" ]; then
|
||||
if [ -f $COREDIR/busybox/enable ]; then
|
||||
log_print "* Enabling BusyBox"
|
||||
cp -afc /data/busybox/. $COREDIR/busybox
|
||||
cp -afc /system/xbin/. $COREDIR/busybox
|
||||
@ -518,10 +423,6 @@ case $1 in
|
||||
bind_mount $COREDIR/busybox /system/xbin
|
||||
fi
|
||||
|
||||
# Stage 3
|
||||
log_print "* Bind mount system mirror"
|
||||
bind_mount /system $MIRRDIR/system
|
||||
|
||||
# Restart post-fs-data if necessary (multirom)
|
||||
$MULTIROM && setprop magisk.restart_pfsd 1
|
||||
|
||||
@ -536,7 +437,7 @@ case $1 in
|
||||
run_scripts service
|
||||
|
||||
# Magisk Hide
|
||||
if [ -f "$COREDIR/magiskhide/enable" ]; then
|
||||
if [ -f $COREDIR/magiskhide/enable ]; then
|
||||
log_print "* Removing tampered read-only system props"
|
||||
|
||||
VERIFYBOOT=`getprop ro.boot.verifiedbootstate`
|
||||
|
||||
Loading…
Reference in New Issue
Block a user