mirror of
https://github.com/topjohnwu/Magisk.git
synced 2024-11-23 18:15:30 +00:00
542 lines
15 KiB
Bash
542 lines
15 KiB
Bash
#!/system/bin/sh
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LOGFILE=/cache/magisk.log
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DISABLEFILE=/cache/.disable_magisk
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UNINSTALLER=/cache/magisk_uninstaller.sh
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IMG=/data/magisk.img
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WHITELIST="/system/bin"
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MOUNTPOINT=/magisk
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COREDIR=$MOUNTPOINT/.core
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TMPDIR=/dev/magisk
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DUMMDIR=$TMPDIR/dummy
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MIRRDIR=$TMPDIR/mirror
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MOUNTINFO=$TMPDIR/mnt
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# Use the included busybox for maximum compatibility and reliable results
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# e.g. we rely on the option "-c" for cp (reserve contexts), and -exec for find
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TOOLPATH=/dev/busybox
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BINPATH=/data/magisk
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OLDPATH=$PATH
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export PATH=$TOOLPATH:$OLDPATH
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APPDIR=/data/data/com.topjohnwu.magisk/files
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# Default permissions
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umask 022
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log_print() {
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echo "$1"
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echo "$1" >> $LOGFILE
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log -p i -t Magisk "$1"
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}
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mktouch() {
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mkdir -p "${1%/*}" 2>/dev/null
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if [ -z "$2" ]; then
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touch "$1" 2>/dev/null
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else
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echo "$2" > "$1" 2>/dev/null
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fi
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}
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in_list() {
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for i in $2; do
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[ "$1" = "$i" ] && return 0
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done
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return 1
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}
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unblock() {
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touch /dev/.magisk.unblock
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chcon u:object_r:device:s0 /dev/.magisk.unblock
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exit
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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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mount -o bind "$1" "$2" || log_print "Mount Fail: $1 -> $2"
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fi
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}
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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 $1; then
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LOOPDEVICE=$DEV
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break
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fi
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done
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}
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image_size_check() {
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e2fsck -yf $1
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curBlocks=`e2fsck -n $1 2>/dev/null | cut -d, -f3 | cut -d\ -f2`;
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curUsedM=`echo "$curBlocks" | cut -d/ -f1`
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curSizeM=`echo "$curBlocks" | cut -d/ -f1`
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curFreeM=$(((curSizeM - curUsedM) * 4 / 1024))
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curUsedM=$((curUsedM * 4 / 1024 + 1))
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curSizeM=$((curSizeM * 4 / 1024))
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}
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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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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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sh $MOD/$1.sh
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fi
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fi
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done
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for SCRIPT in $COREDIR/${1}.d/* ; do
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if [ -f "$SCRIPT" ]; then
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chmod 755 $SCRIPT
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chcon u:object_r:system_file:s0 $SCRIPT
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log_print "${1}.d: $SCRIPT"
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sh $SCRIPT
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fi
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done
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}
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travel() {
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cd "$TRAVEL_ROOT/$1"
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if [ -f .replace ]; then
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log_print "Replace: /$1"
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rm -rf "$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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# This means it's an empty folder (shouldn't happen, but better to be safe)
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[ "$ITEM" = "*" ] && return
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# Ignore /system/vendor since we will handle it differently
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[ "$1" = "system" -a "$ITEM" = "vendor" ] && continue
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# Target not found or target/file is a symlink
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if [ ! -e "/$1/$ITEM" -o -L "/$1/$ITEM" -o -L "$ITEM" ]; then
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# If we are in a higher level, delete the lower levels
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rm -rf "$MOUNTINFO/dummy/$1" 2>/dev/null
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# Mount the dummy parent
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log_print "Replace with dummy: /$1"
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mktouch "$MOUNTINFO/dummy/$1"
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if [ -L "$ITEM" ]; then
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# Copy symlinks
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log_print "Symlink: /$1/$ITEM"
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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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elif [ -d "$ITEM" ]; then
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# Create new dummy directory and mount it
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log_print "New directory: /$1/$ITEM"
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mkdir -p "$DUMMDIR/$1/$ITEM"
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mktouch "$MOUNTINFO/$1/$ITEM" "$TRAVEL_ROOT"
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else
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# Create new dummy file and mount it
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log_print "New file: /$1/$ITEM"
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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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# 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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# Mount this file
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log_print "Replace: /$1/$ITEM"
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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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fi
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}
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clone_dummy() {
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LINK=false
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in_list "$1" "$WHITELIST" && LINK=true
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for ITEM in $MIRRDIR$1/* ; do
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REAL="${ITEM#$MIRRDIR}"
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if [ -d "$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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elif [ ! -f "$DUMMDIR$REAL" ]; then
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# It's not the file to be added/replaced, clone it
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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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if $LINK && [ ! -e "$MOUNTINFO$REAL" ]; then
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ln -sf "$MIRRDIR$REAL" "$DUMMDIR$REAL"
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else
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if [ -d "$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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if [ ! -e "$MOUNTINFO$REAL" ]; then
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log_print "Clone skeleton: $REAL"
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mktouch "$MOUNTINFO/mirror$REAL"
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fi
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fi
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fi
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fi
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done
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}
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merge_image() {
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if [ -f $1 ]; then
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log_print "$1 found"
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if [ -f $IMG ]; then
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log_print "$IMG found, attempt to merge"
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# Handle large images
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image_size_check $1
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mergeUsedM=$curUsedM
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image_size_check $IMG
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if [ "$mergeUsedM" -gt "$curFreeM" ]; then
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NEWDATASIZE=$(((mergeUsedM + curUsedM) / 32 * 32 + 32))
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log_print "Expanding $IMG to ${NEWDATASIZE}M..."
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resize2fs $IMG ${NEWDATASIZE}M
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fi
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# Start merging
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mkdir /cache/data_img
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mkdir /cache/merge_img
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# setup loop devices
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loopsetup $IMG
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LOOPDATA=$LOOPDEVICE
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log_print "$LOOPDATA $IMG"
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loopsetup $1
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LOOPMERGE=$LOOPDEVICE
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log_print "$LOOPMERGE $1"
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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 $OK; then
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# Merge (will reserve selinux contexts)
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cd /cache/merge_img
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for MOD in *; do
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if [ "$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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losetup -d $LOOPMERGE
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rmdir /cache/data_img
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rmdir /cache/merge_img
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else
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log_print "Moving $1 to $IMG "
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mv $1 $IMG
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fi
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rm -f $1
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fi
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}
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case $1 in
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post-fs )
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mv $LOGFILE /cache/last_magisk.log
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touch $LOGFILE
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chmod 644 $LOGFILE
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# No more cache mods!
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# Only for multirom!
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log_print "** Magisk post-fs mode running..."
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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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[ -f $DISABLEFILE -o -f $UNINSTALLER ] && unblock
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if [ -d /cache/magisk_mount ]; then
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log_print "* Mounting cache files"
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find /cache/magisk_mount -type f 2>/dev/null | while read ITEM ; do
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chmod 644 "$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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done
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fi
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unblock
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;;
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post-fs-data )
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# /data not mounted yet
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! mount | grep " /data " >/dev/null && unblock
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mount | grep " /data " | grep "tmpfs" >/dev/null && unblock
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# Don't run twice
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if [ "`getprop magisk.restart_pfsd`" != "1" ]; then
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log_print "** Magisk post-fs-data mode running..."
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# Cache support
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mv /cache/stock_boot* /data 2>/dev/null
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if [ -d /cache/data_bin ]; then
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rm -rf $BINPATH
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mv /cache/data_bin $BINPATH
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fi
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chmod -R 755 $BINPATH
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chown -R 0.0 $BINPATH
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# Live patch sepolicy
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$BINPATH/magiskpolicy --live
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if [ -f $UNINSTALLER ]; then
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touch /dev/.magisk.unblock
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chcon u:object_r:device:s0 /dev/.magisk.unblock
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sh $UNINSTALLER
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exit
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fi
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# Set up environment
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mkdir -p $TOOLPATH
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$BINPATH/busybox --install -s $TOOLPATH
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ln -sf $BINPATH/busybox $TOOLPATH/busybox
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# Prevent issues
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rm -f $TOOLPATH/su $TOOLPATH/sh $TOOLPATH/reboot
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chmod -R 755 $TOOLPATH
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chown -R 0.0 $TOOLPATH
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find $BINPATH $TOOLPATH -exec chcon -h u:object_r:system_file:s0 {} \;
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# Multirom functions should go here, not available right now
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MULTIROM=false
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# Image merging
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chmod 644 $IMG /cache/magisk.img /data/magisk_merge.img 2>/dev/null
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merge_image /cache/magisk.img
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merge_image /data/magisk_merge.img
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# Mount magisk.img
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[ ! -d $MOUNTPOINT ] && mkdir -p $MOUNTPOINT
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if ! mount | grep $MOUNTPOINT; then
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loopsetup $IMG
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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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# 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 $MOUNTPOINT/zzsupersu $MOUNTPOINT/phh $COREDIR/bin $COREDIR/dummy $COREDIR/mirror \
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$COREDIR/busybox $COREDIR/su /data/magisk/*.img /data/busybox 2>/dev/null
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# Remove modules that are labeled to be removed
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for MOD in $MOUNTPOINT/* ; do
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rm -f $MOD/system/placeholder 2>/dev/null
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if [ -f $MOD/remove ]; 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; then
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losetup -d $LOOPDEVICE 2>/dev/null
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image_size_check $IMG
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NEWDATASIZE=$((curUsedM / 32 * 32 + 32))
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if [ "$curSizeM" -gt "$NEWDATASIZE" ]; then
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log_print "Shrinking $IMG to ${NEWDATASIZE}M..."
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resize2fs $IMG ${NEWDATASIZE}M
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fi
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loopsetup $IMG
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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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log_print "* Linking binaries to /sbin"
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mount -o rw,remount rootfs /
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chmod 755 /sbin
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ln -sf $BINPATH/magiskpolicy /sbin/magiskpolicy
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ln -sf $BINPATH/magiskpolicy /sbin/sepolicy-inject
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ln -sf $BINPATH/resetprop /sbin/resetprop
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if [ ! -f /sbin/launch_daemonsu.sh ]; then
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log_print "* Starting MagiskSU"
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export PATH=$OLDPATH
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ln -sf $BINPATH/su /sbin/su
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ln -sf $BINPATH/magiskpolicy /sbin/supolicy
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/sbin/su --daemon
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export PATH=$TOOLPATH:$OLDPATH
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fi
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mount -o ro,remount rootfs /
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[ -f $DISABLEFILE ] && unblock
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log_print "* Preparing modules"
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# Remove crap folder
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rm -rf $MOUNTPOINT/lost+found
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# Link vendor if not exist
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if [ ! -e /vendor ]; then
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mount -o rw,remount rootfs /
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ln -sf /system/vendor /vendor
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mount -o ro,remount rootfs /
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fi
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for MOD in $MOUNTPOINT/* ; do
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if [ ! -f $MOD/disable ]; then
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# Travel through all mods
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if [ -f $MOD/auto_mount -a -d $MOD/system ]; then
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log_print "Analyzing module: $MOD"
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TRAVEL_ROOT=$MOD
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(travel system)
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rm -f $MOD/vendor 2>/dev/null
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if [ -d $MOD/system/vendor ]; then
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ln -sf $MOD/system/vendor $MOD/vendor
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(travel vendor)
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fi
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fi
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# Read in defined system props
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if [ -f $MOD/system.prop ]; then
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log_print "* Reading props from $MOD/system.prop"
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$BINPATH/resetprop --file $MOD/system.prop
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fi
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fi
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done
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# Proper permissions for generated items
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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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cp -afc /system/bin/linker* /system/bin/t*box $DUMMDIR/system/bin/
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fi
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# Start doing tasks
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# Stage 1
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log_print "* Stage 1: Mount system and vendor mirrors"
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SYSTEMBLOCK=`mount | grep " /system " | awk '{print $1}'`
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mkdir -p $MIRRDIR/system
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mount -o ro $SYSTEMBLOCK $MIRRDIR/system
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if [ `mount | grep -c " /vendor "` -ne 0 ]; then
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VENDORBLOCK=`mount | grep " /vendor " | 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 -sf $MIRRDIR/system/vendor $MIRRDIR/vendor
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fi
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# Since mirrors always exist, we load libraries and binaries from mirrors
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export LD_LIBRARY_PATH=$MIRRDIR/system/lib:$MIRRDIR/vendor/lib
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[ -d $MIRRDIR/system/lib64 ] && export LD_LIBRARY_PATH=$MIRRDIR/system/lib64:$MIRRDIR/vendor/lib64
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# Stage 2
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log_print "* Stage 2: Mount dummy skeletons"
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# Move /system/vendor to /vendor for consistency
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mv -f $MOUNTINFO/dummy/system/vendor $MOUNTINFO/dummy/vendor 2>/dev/null
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mv -f $DUMMDIR/system/vendor $DUMMDIR/vendor 2>/dev/null
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find $MOUNTINFO/dummy -type f 2>/dev/null | while read ITEM ; do
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TARGET="${ITEM#$MOUNTINFO/dummy}"
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ORIG="$DUMMDIR$TARGET"
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(clone_dummy "$TARGET")
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bind_mount "$ORIG" "$TARGET"
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done
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# Check if the dummy /system/bin is empty, it shouldn't
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[ -e $DUMMDIR/system/bin -a ! -e $DUMMDIR/system/bin/sh ] && clone_dummy /system/bin
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# Stage 3
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log_print "* Stage 3: Mount module items"
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find $MOUNTINFO/system $MOUNTINFO/vendor -type f 2>/dev/null | while read ITEM ; do
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TARGET="${ITEM#$MOUNTINFO}"
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ORIG="`cat "$ITEM"`$TARGET"
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bind_mount "$ORIG" "$TARGET"
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done
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# Stage 4
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log_print "* Stage 4: Execute scripts"
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run_scripts post-fs-data
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# Stage 5
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log_print "* Stage 5: Mount mirrored items back to dummy"
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find $MOUNTINFO/mirror -type f 2>/dev/null | while read ITEM ; do
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TARGET="${ITEM#$MOUNTINFO/mirror}"
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ORIG="$MIRRDIR$TARGET"
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bind_mount "$ORIG" "$TARGET"
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done
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# Bind hosts for Adblock apps
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if [ -f $COREDIR/hosts ]; then
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log_print "* Enabling systemless hosts file support"
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bind_mount $COREDIR/hosts /system/etc/hosts
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fi
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if [ -f /data/magisk/magisk.apk ]; then
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if [ -z `ls /data/app | grep com.topjohnwu.magisk` ]; then
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mkdir /data/app/com.topjohnwu.magisk-1
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cp /data/magisk/magisk.apk /data/app/com.topjohnwu.magisk-1/base.apk
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chown 1000.1000 /data/app/com.topjohnwu.magisk-1
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chown 1000.1000 /data/app/com.topjohnwu.magisk-1/base.apk
|
|
chmod 755 /data/app/com.topjohnwu.magisk-1
|
|
chmod 644 /data/app/com.topjohnwu.magisk-1/base.apk
|
|
chcon u:object_r:apk_data_file:s0 /data/app/com.topjohnwu.magisk-1
|
|
chcon u:object_r:apk_data_file:s0 /data/app/com.topjohnwu.magisk-1/base.apk
|
|
fi
|
|
rm -f /data/magisk/magisk.apk 2>/dev/null
|
|
fi
|
|
|
|
# Expose busybox
|
|
[ "`getprop persist.magisk.busybox`" = "1" ] && sh /sbin/magic_mask.sh mount_busybox
|
|
|
|
# Restart post-fs-data if necessary (multirom)
|
|
$MULTIROM && setprop magisk.restart_pfsd 1
|
|
|
|
fi
|
|
unblock
|
|
;;
|
|
|
|
mount_busybox )
|
|
log_print "* Enabling BusyBox"
|
|
cp -afc /system/xbin/. $TOOLPATH
|
|
umount /system/xbin 2>/dev/null
|
|
bind_mount $TOOLPATH /system/xbin
|
|
;;
|
|
|
|
service )
|
|
# Version info
|
|
MAGISK_VERSION_STUB
|
|
log_print "** Magisk late_start service mode running..."
|
|
if [ -f $DISABLEFILE ]; then
|
|
setprop ro.magisk.disable 1
|
|
exit
|
|
fi
|
|
run_scripts service
|
|
|
|
# Start MagiskHide
|
|
[ "`getprop persist.magisk.hide`" = "1" ] && sh $COREDIR/magiskhide/enable
|
|
;;
|
|
|
|
esac
|