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CommonInstaller: find_block() from Magisk

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This commit is contained in:
Christopher Roy Bratusek 2021-01-12 20:47:31 +01:00
parent 0f8db95609
commit cac483552f
1 changed files with 38 additions and 20 deletions
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58
CommonInstaller
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@ -229,39 +229,52 @@ is_mounted () {
# mount partitions
##########################################################################################
toupper() {
echo "$@" | tr '[:lower:]' '[:upper:]'
}
find_block () {
unset tmp
tmp=$(find /dev/block \( -type b -o -type c -o -type l \) -name ${1}${SLOT} | head -n 1)
[ -z "${tmp}" ] && tmp=$(find /dev \( -type b -o -type c -o -type l \) -maxdepth 1 -iname ${1}${SLOT} | head -n 1)
if [ -z "${tmp}" ]; then
for uevent in /sys/dev/block/*/uevent; do
partname=$(awk -F= '/PARTNAME/{print $2}' ${uevent})
if [ "${1}${SLOT}" = "${partname}" ]; then
tmp="/dev/block/$(awk -F= '/DEVNAME/{print $2}' ${uevent})"
break
fi
done
local block tmp partname devname device
block=${1}${SLOT}
device=$(find /dev/block \( -type b -o -type c -o -type l \) -name ${block} | head -n 1)
if [ ! -z ${device} ]; then
readlink -f ${device}
return 0
fi
readlink -f "${tmp}"
for uevent in /sys/dev/block/*/uevent; do
partname=$(awk -F= '/PARTNAME/{print $2}' ${uevent})
devname=$(awk -F= '/DEVNAME/{print $2}' ${uevent})
if [ "$(toupper ${block})" = "$(toupper ${partname})" ]; then
echo /dev/block/${devname}
return 0
fi
done
device=$(find /dev \( -type b -o -type c -o -type l \) -maxdepth 1 -iname ${block} | head -n 1)
if [ ! -z ${device} ]; then
readlink -f ${device}
return 0
fi
return 1
}
mount_partitions () {
if ! ${BOOTMODE}; then
DEVICE_AB=FALSE
VENDOR_COMPAT=FALSE
SYSTEM_AS_ROOT=FALSE
SLOT=$(grep_cmdline androidboot.slot_suffix)
decho " INFO: #1 [SLOT] ${SLOT}"
if [ -z ${SLOT} ]; then
SLOT=$(grep_cmdline androidboot.slot)
echo " INFO: #2 [SLOT] ${SLOT}"
if [ ! -z ${SLOT} ]; then
SLOT=_${SLOT}
echo " INFO: #3 [SLOT] ${SLOT}"
DEVICE_AB=TRUE
fi
[ -z ${SLOT} ] || SLOT=_${SLOT}
fi
[ -z ${SLOT} ] && DEVICE_AB=FALSE || DEVICE_AB=TRUE
decho " INFO: #1 [SLOT] ${SLOT}"
is_mounted /data || mount /data || decho "failed to mount /data!"
@ -270,6 +283,11 @@ mount_partitions () {
SYSTEM_BLOCK=$(find_block system)
decho " INFO: #5 [SYSTEM_BLOCK] ${SYSTEM_BLOCK}"
if is_mounted /system_root; then
umount /system 2&>/dev/null
umount /system_root 2&>/dev/null
fi
mkdir -p /system /system_root
mount -o rw ${SYSTEM_BLOCK} /system