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Fix SuperSU installation
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@topjohnwu
topjohnwu committed Mar 30, 2017
1 parent 0a0eb3f commit d274e45
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Showing 6 changed files with 117 additions and 80 deletions.
2 changes: 1 addition & 1 deletion build.cmd
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Original file line number Diff line number Diff line change
Expand Up @@ -102,7 +102,7 @@ EXIT /B %ERRORLEVEL%
ECHO ************************
ECHO * Copying Files
ECHO ************************
COPY /Y scripts\ramdisk_patch.sh zip_static\common\ramdisk_patch.sh
COPY /Y scripts\custom_ramdisk_patch.sh zip_static\common\custom_ramdisk_patch.sh
COPY /Y scripts\init.magisk.rc zip_static\common\init.magisk.rc
COPY /Y binaries\busybox-arm zip_static\arm\busybox
COPY /Y binaries\busybox-arm64 zip_static\arm64\busybox
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2 changes: 1 addition & 1 deletion build.sh
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Expand Up @@ -75,7 +75,7 @@ zip_package() {
echo "************************"
echo "* Copying files"
echo "************************"
cp -afv scripts/ramdisk_patch.sh zip_static/common/ramdisk_patch.sh
cp -afv scripts/custom_ramdisk_patch.sh zip_static/common/custom_ramdisk_patch.sh
cp -afv scripts/init.magisk.rc zip_static/common/init.magisk.rc
cp -afv binaries/busybox-arm zip_static/arm/busybox
cp -afv binaries/busybox-arm64 zip_static/arm64/busybox
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9 changes: 5 additions & 4 deletions jni/magiskboot/cpio.c
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Expand Up @@ -195,18 +195,19 @@ static void cpio_add(mode_t mode, const char *entry, const char *filename, vecto
}

static void cpio_test(vector *v) {
#define MAGISK_PATCH 0x1
#define SUPERSU_PATCH 0x2
int ret = 0;
cpio_file *f;
vec_for_each(v, f) {
if (strcmp(f->filename, "sbin/launch_daemonsu.sh") == 0) {
if (!ret) ret = 2;
ret |= SUPERSU_PATCH;
} else if (strcmp(f->filename, "init.magisk.rc") == 0) {
ret = 1;
break;
ret |= MAGISK_PATCH;
}
}
cpio_vec_destroy(v);
exit(ret);
exit((ret & SUPERSU_PATCH) ? SUPERSU_PATCH : (ret & MAGISK_PATCH));
}

static int check_verity_pattern(const char *s) {
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57 changes: 57 additions & 0 deletions scripts/custom_ramdisk_patch.sh
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Original file line number Diff line number Diff line change
@@ -0,0 +1,57 @@
#!/system/bin/sh

RAMDISK=$1

TMPDIR=/dev/tmp
MAGISKBIN=/data/magisk
[ ! -e $MAGISKBIN ] && MAGISKBIN=/cache/data_bin
[ ! -e $MAGISKBIN ] && exit 1
SYSTEMLIB=/system/lib
[ -d /system/lib64 ] && SYSTEMLIB=/system/lib64

mkdir -p $TMPDIR 2>/dev/null
cd $TMPDIR

cpio_add() {
LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-add $RAMDISK $RAMDISK $1 $2 $3
}

cpio_extract() {
LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-extract $RAMDISK $1 $2
}

cpio_mkdir() {
LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-mkdir $RAMDISK $RAMDISK $1 $2
}

# Recursive
cpio_rm() {
if [ "$1" = "-r" ]; then
LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-ls $RAMDISK | grep "^$2/" | while read i ; do
LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-rm $RAMDISK $RAMDISK $i
done
LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-rmdir $RAMDISK $RAMDISK $2
else
LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-rm $RAMDISK $RAMDISK $1
fi
}

# Cleanup SuperSU backups
cpio_rm -r .subackup

# Add magisk entrypoint
cpio_extract init.rc init.rc
grep "import /init.magisk.rc" init.rc >/dev/null || sed -i '1,/.*import.*/s/.*import.*/import \/init.magisk.rc\n&/' init.rc
sed -i "/selinux.reload_policy/d" init.rc
cpio_add 750 init.rc init.rc

# sepolicy patches
cpio_extract sepolicy sepolicy
LD_LIBRARY_PATH=$SYSTEMLIB $MAGISKBIN/magiskpolicy --load sepolicy --save sepolicy --minimal
cpio_add 644 sepolicy sepolicy

# Add new items
cpio_mkdir 755 magisk
cpio_add 750 init.magisk.rc $MAGISKBIN/init.magisk.rc
cpio_add 750 sbin/magic_mask.sh $MAGISKBIN/magic_mask.sh

70 changes: 53 additions & 17 deletions scripts/flash_script.sh
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Original file line number Diff line number Diff line change
Expand Up @@ -171,6 +171,21 @@ remove_system_su() {
fi
}

# --cpio-add <incpio> <mode> <entry> <infile>
cpio_add() {
LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-add ramdisk.cpio $1 $2 $3
}

# --cpio-extract <incpio> <entry> <outfile>
cpio_extract() {
LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-extract ramdisk.cpio $1 $2
}

# --cpio-mkdir <incpio> <mode> <entry>
cpio_mkdir() {
LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-mkdir ramdisk.cpio $1 $2
}

##########################################################################################
# Detection
##########################################################################################
Expand Down Expand Up @@ -249,7 +264,7 @@ is_mounted /data && MAGISKBIN=/data/magisk || MAGISKBIN=/cache/data_bin
rm -rf $MAGISKBIN 2>/dev/null
mkdir -p $MAGISKBIN
cp -af $BINDIR/busybox $BINDIR/magiskboot $BINDIR/magiskpolicy $COMMONDIR/magisk.apk \
$COMMONDIR/init.magisk.rc $COMMONDIR/ramdisk_patch.sh $COMMONDIR/magic_mask.sh $MAGISKBIN
$COMMONDIR/init.magisk.rc $COMMONDIR/custom_ramdisk_patch.sh $COMMONDIR/magic_mask.sh $MAGISKBIN
# Legacy support
ln -sf /data/magisk/magiskpolicy $MAGISKBIN/sepolicy-inject

Expand Down Expand Up @@ -372,8 +387,9 @@ case $? in
2 ) # SuperSU patched
SUPERSU=true
ui_print "- SuperSU patched boot detected!"
ui_print "- Adding auto patch script for SuperSU"
cp -af $COMMONDIR/ramdisk_patch.sh /data/custom_ramdisk_patch.sh
ui_print "- Adding ramdisk patch script for SuperSU"
cp -af $COMMONDIR/custom_ramdisk_patch.sh /data/custom_ramdisk_patch.sh
ui_print "- We are using SuperSU's own tools, mounting su.img"
is_mounted /data && SUIMG=/data/su.img || SUIMG=/cache/su.img
mount_image $SUIMG /su
SUPERSULOOP=$LOOPDEVICE
Expand All @@ -390,21 +406,15 @@ case $? in
rm stock_boot.img
else
ui_print "! Cannot find stock boot image backup"
ui_print "! Will still try to complete installation"
# Since no backup at all, let's try our best...
LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-restore ramdisk.cpio
cp -af ramdisk.cpio ramdisk.cpio.orig
exit 1
fi
fi
else
ui_print "! SuperSU image mount failed..."
ui_print "! Will still try to complete installation"
# Since we cannot rely on sukernel, do it outselves...
LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-restore ramdisk.cpio
cp -af ramdisk.cpio ramdisk.cpio.orig
ui_print "! Magisk scripts are placed correctly"
ui_print "! Flash SuperSU immediately to finish installation"
exit 1
fi
# Remove SuperSU backups, since we are recreating it
LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-rm ramdisk.cpio -r .subackup
;;
esac

Expand All @@ -414,13 +424,39 @@ esac

# All ramdisk patch commands are stored in a separate script
ui_print "- Patching ramdisk"
source $COMMONDIR/ramdisk_patch.sh $BOOTTMP/ramdisk.cpio

cd $BOOTTMP
# Create ramdisk backups
if $SUPERSU; then
[ -f /su/bin/sukernel ] && LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-backup ramdisk.cpio.orig ramdisk.cpio ramdisk.cpio
# Use sukernel to patch ramdisk, so we can use its own tools to backup
sh $COMMONDIR/custom_ramdisk_patch.sh $BOOTTMP/ramdisk.cpio

# Create ramdisk backups
LD_LIBRARY_PATH=$SYSTEMLIB /su/bin/sukernel --cpio-backup ramdisk.cpio.orig ramdisk.cpio ramdisk.cpio

else
# The common patches
$KEEPVERITY || LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-patch-dmverity ramdisk.cpio
$KEEPFORCEENCRYPT || LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-patch-forceencrypt ramdisk.cpio

# Add magisk entrypoint
cpio_extract init.rc init.rc
grep "import /init.magisk.rc" init.rc >/dev/null || sed -i '1,/.*import.*/s/.*import.*/import \/init.magisk.rc\n&/' init.rc
sed -i "/selinux.reload_policy/d" init.rc
cpio_add 750 init.rc init.rc

# sepolicy patches
cpio_extract sepolicy sepolicy
LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskpolicy --load sepolicy --save sepolicy --minimal
cpio_add 644 sepolicy sepolicy

# Add new items
cpio_mkdir 755 magisk

[ ! -z $SHA1 ] && echo "# STOCKSHA1=$SHA1" >> $COMMONDIR/init.magisk.rc
cpio_add 750 init.magisk.rc $COMMONDIR/init.magisk.rc

cpio_add 750 sbin/magic_mask.sh $COMMONDIR/magic_mask.sh

# Create ramdisk backups
LD_LIBRARY_PATH=$SYSTEMLIB $BINDIR/magiskboot --cpio-backup ramdisk.cpio ramdisk.cpio.orig
fi

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57 changes: 0 additions & 57 deletions scripts/ramdisk_patch.sh
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