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Proper support for special mounts

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topjohnwu 2016-11-14 04:30:05 +08:00
parent 0e69201f05
commit f1d3e35aac
1 changed files with 52 additions and 28 deletions
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80
scripts/magic_mask.sh
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@ -16,10 +16,8 @@ MOUNTINFO=$TMPDIR/mnt
# e.g. we rely on the option "-c" for cp (reserve contexts), and -exec for find # e.g. we rely on the option "-c" for cp (reserve contexts), and -exec for find
TOOLPATH=/data/busybox TOOLPATH=/data/busybox
BINPATH=/data/magisk BINPATH=/data/magisk
OLDPATH=$PATH
# Legacy support for old phh, we don't change PATH now PATH=$TOOLPATH:$OLDPATH
# Will remove in the next release
export OLDPATH=$PATH
# Default permissions # Default permissions
umask 022 umask 022
@ -34,9 +32,9 @@ log_print() {
mktouch() { mktouch() {
mkdir -p ${1%/*} 2>/dev/null mkdir -p ${1%/*} 2>/dev/null
if [ -z "$2" ]; then if [ -z "$2" ]; then
touch $1 2>/dev/null touch "$1" 2>/dev/null
else else
echo $2 > $1 2>/dev/null echo "$2" > "$1" 2>/dev/null
fi fi
} }
@ -46,6 +44,7 @@ unblock() {
} }
run_scripts() { run_scripts() {
PATH=$OLDPATH
BASE=$MOUNTPOINT BASE=$MOUNTPOINT
for MOD in $BASE/* ; do for MOD in $BASE/* ; do
if [ ! -f "$MOD/disable" ]; then if [ ! -f "$MOD/disable" ]; then
@ -57,12 +56,13 @@ run_scripts() {
fi fi
fi fi
done done
PATH=$TOOLPATH:$OLDPATH
} }
loopsetup() { loopsetup() {
LOOPDEVICE= LOOPDEVICE=
for DEV in $(ls /dev/block/loop*); do for DEV in $(ls /dev/block/loop*); do
if [ `$TOOLPATH/losetup $DEV $1 >/dev/null 2>&1; echo $?` -eq 0 ]; then if [ `losetup $DEV $1 >/dev/null 2>&1; echo $?` -eq 0 ]; then
LOOPDEVICE=$DEV LOOPDEVICE=$DEV
break break
fi fi
@ -102,7 +102,7 @@ travel() {
elif [ -L "$ITEM" ]; then elif [ -L "$ITEM" ]; then
# Symlinks are small, copy them # Symlinks are small, copy them
mkdir -p "$DUMMDIR/$2" 2>/dev/null mkdir -p "$DUMMDIR/$2" 2>/dev/null
$TOOLPATH/cp -afc "$ITEM" "$DUMMDIR/$2/$ITEM" cp -afc "$ITEM" "$DUMMDIR/$2/$ITEM"
else else
# Create new dummy file and mount it # Create new dummy file and mount it
mktouch "$DUMMDIR/$2/$ITEM" mktouch "$DUMMDIR/$2/$ITEM"
@ -126,17 +126,18 @@ clone_dummy() {
for ITEM in "$1/"* ; do for ITEM in "$1/"* ; do
if [ -d "$DUMMDIR$ITEM" ]; then if [ -d "$DUMMDIR$ITEM" ]; then
(clone_dummy "$ITEM") (clone_dummy "$ITEM")
else elif [ ! -e "$DUMMDIR$ITEM" ]; then
if [ -d "$ITEM" ]; then if [ -d "$ITEM" ]; then
# Create dummy directory # Create dummy directory
mkdir -p "$DUMMDIR$ITEM" mkdir -p "$DUMMDIR$ITEM"
elif [ -L "$ITEM" ]; then elif [ -L "$ITEM" ]; then
# Symlinks are small, copy them # Symlinks are small, copy them
$TOOLPATH/cp -afc "$ITEM" "$DUMMDIR$ITEM" cp -afc "$ITEM" "$DUMMDIR$ITEM"
else else
# Create dummy file # Create dummy file
mktouch "$DUMMDIR$ITEM" mktouch "$DUMMDIR$ITEM"
fi fi
chcon -f "u:object_r:system_file:s0" "$DUMMDIR$ITEM"
fi fi
done done
} }
@ -203,7 +204,7 @@ merge_image() {
rm -rf /cache/data_img/$MOD rm -rf /cache/data_img/$MOD
fi fi
done done
$TOOLPATH/cp -afc . /cache/data_img cp -afc . /cache/data_img
log_print "Merge complete" log_print "Merge complete"
cd / cd /
fi fi
@ -213,8 +214,8 @@ merge_image() {
fi fi
fi fi
$TOOLPATH/losetup -d $LOOPDATA losetup -d $LOOPDATA
$TOOLPATH/losetup -d $LOOPMERGE losetup -d $LOOPMERGE
rmdir /cache/data_img rmdir /cache/data_img
rmdir /cache/merge_img rmdir /cache/merge_img
@ -289,7 +290,8 @@ case $1 in
mv /cache/stock_boot.img /data 2>/dev/null mv /cache/stock_boot.img /data 2>/dev/null
chcon -hR "u:object_r:system_file:s0" $BINPATH $TOOLPATH find $BINPATH -exec chcon -h "u:object_r:system_file:s0" {} \;
find $TOOLPATH -exec chcon -h "u:object_r:system_file:s0" {} \;
chmod -R 755 $BINPATH $TOOLPATH chmod -R 755 $BINPATH $TOOLPATH
# Image merging # Image merging
@ -313,7 +315,7 @@ case $1 in
# Remove empty directories, legacy paths and symlinks # Remove empty directories, legacy paths and symlinks
rm -rf $COREDIR/bin $COREDIR/dummy $COREDIR/mirror rm -rf $COREDIR/bin $COREDIR/dummy $COREDIR/mirror
$TOOLPATH/find $MOUNTPOINT -type d -depth ! -path "*core*" -exec rmdir {} \; 2>/dev/null find $MOUNTPOINT -type d -depth ! -path "*core*" -exec rmdir {} \; 2>/dev/null
# Remove modules # Remove modules
for MOD in $MOUNTPOINT/* ; do for MOD in $MOUNTPOINT/* ; do
@ -325,7 +327,7 @@ case $1 in
# Unmount, shrink, remount # Unmount, shrink, remount
if [ `umount $MOUNTPOINT >/dev/null 2>&1; echo $?` -eq 0 ]; then if [ `umount $MOUNTPOINT >/dev/null 2>&1; echo $?` -eq 0 ]; then
$TOOLPATH/losetup -d $LOOPDEVICE losetup -d $LOOPDEVICE
target_size_check $IMG target_size_check $IMG
NEWDATASIZE=$(((curUsedM / 32 + 2) * 32)) NEWDATASIZE=$(((curUsedM / 32 + 2) * 32))
if [ "$curSizeM" -gt "$NEWDATASIZE" ]; then if [ "$curSizeM" -gt "$NEWDATASIZE" ]; then
@ -354,11 +356,36 @@ case $1 in
fi fi
done done
# linker(64), t*box, and app_process* are required if we need to dummy mount bin folder # Proper permissions for generated items
find $TMPDIR -exec chcon -h "u:object_r:system_file:s0" {} \;
# linker(64), t*box required
if [ -f "$MOUNTINFO/dummy/system/bin" ]; then if [ -f "$MOUNTINFO/dummy/system/bin" ]; then
rm -f $DUMMDIR/system/bin/linker* $DUMMDIR/system/bin/t*box $DUMMDIR/system/bin/app_process*
cd /system/bin cd /system/bin
$TOOLPATH/cp -afc linker* t*box app_process* $DUMMDIR/system/bin/ cp -afc linker* t*box $DUMMDIR/system/bin/
fi
# Some libraries are required
LIBS="libc++.so libc.so libcutils.so libm.so libstdc++.so libcrypto.so liblog.so libpcre.so libselinux.so libpackagelistparser.so"
if [ -f "$MOUNTINFO/dummy/system/lib" ]; then
cd /system/lib
cp -afc $LIBS $DUMMDIR/system/lib
fi
if [ -f "$MOUNTINFO/dummy/system/lib64" ]; then
cd /system/lib64
cp -afc $LIBS $DUMMDIR/system/lib64
fi
# vendor libraries are device dependent, had no choice but copy them all if needed....
if [ -f "$MOUNTINFO/dummy/system/vendor" ]; then
cp -afc /system/vendor/lib/. $DUMMDIR/system/vendor/lib
[ -d "/system/vendor/lib64" ] && cp -afc /system/vendor/lib64/. $DUMMDIR/system/vendor/lib64
fi
if [ -f "$MOUNTINFO/dummy/system/vendor/lib" ]; then
cp -afc /system/vendor/lib/. $DUMMDIR/system/vendor/lib
fi
if [ -f "$MOUNTINFO/dummy/system/vendor/lib64" ]; then
cp -afc /system/vendor/lib64/. $DUMMDIR/system/vendor/lib64
fi fi
# Remove crap folder # Remove crap folder
@ -368,19 +395,16 @@ case $1 in
# Stage 1 # Stage 1
log_print "Bind mount dummy system" log_print "Bind mount dummy system"
$TOOLPATH/find $MOUNTINFO/dummy -type f 2>/dev/null | while read ITEM ; do find $MOUNTINFO/dummy -type f 2>/dev/null | while read ITEM ; do
TARGET=${ITEM#$MOUNTINFO/dummy} TARGET=${ITEM#$MOUNTINFO/dummy}
ORIG="$DUMMDIR$TARGET" ORIG="$DUMMDIR$TARGET"
clone_dummy "$TARGET" clone_dummy "$TARGET"
bind_mount "$ORIG" "$TARGET" bind_mount "$ORIG" "$TARGET"
done done
# Proper permissions for generated items
chcon -hR "u:object_r:system_file:s0" $TMPDIR
# Stage 2 # Stage 2
log_print "Bind mount module items" log_print "Bind mount module items"
$TOOLPATH/find $MOUNTINFO/system -type f 2>/dev/null | while read ITEM ; do find $MOUNTINFO/system -type f 2>/dev/null | while read ITEM ; do
TARGET=${ITEM#$MOUNTINFO} TARGET=${ITEM#$MOUNTINFO}
ORIG=`cat $ITEM`$TARGET ORIG=`cat $ITEM`$TARGET
bind_mount $ORIG $TARGET bind_mount $ORIG $TARGET
@ -399,8 +423,8 @@ case $1 in
# Expose busybox # Expose busybox
if [ -f "$COREDIR/busybox/enable" ]; then if [ -f "$COREDIR/busybox/enable" ]; then
log_print "Enabling BusyBox" log_print "Enabling BusyBox"
$TOOLPATH/cp -afc /data/busybox/. $COREDIR/busybox cp -afc /data/busybox/. $COREDIR/busybox
$TOOLPATH/cp -afc /system/xbin/. $COREDIR/busybox cp -afc /system/xbin/. $COREDIR/busybox
chmod -R 755 $COREDIR/busybox chmod -R 755 $COREDIR/busybox
chcon -hR "u:object_r:system_file:s0" $COREDIR/busybox chcon -hR "u:object_r:system_file:s0" $COREDIR/busybox
bind_mount $COREDIR/busybox /system/xbin bind_mount $COREDIR/busybox /system/xbin
@ -413,8 +437,8 @@ case $1 in
# Stage 4 # Stage 4
log_print "Bind mount mirror items" log_print "Bind mount mirror items"
# Find all empty directores and dummy files, they should be mounted by original files in /system # Find all empty directores and dummy files, they should be mounted by original files in /system
TOOLPATH=/data/busybox $TOOLPATH/find $DUMMDIR -type d \ TOOLPATH=/data/busybox find $DUMMDIR -type d \
-exec sh -c '[ -z "`$TOOLPATH/ls -A $1`" ] && echo $1' -- {} \; \ -exec sh -c '[ -z "`ls -A $1`" ] && echo $1' -- {} \; \
-o \( -type f -size 0 -print \) | \ -o \( -type f -size 0 -print \) | \
while read ITEM ; do while read ITEM ; do
ORIG=${ITEM/dummy/mirror} ORIG=${ITEM/dummy/mirror}