75 lines
2.1 KiB
Bash
75 lines
2.1 KiB
Bash
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#! /bin/sh
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arg1=$1
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if [ "${arg1:0:6}" == mmcblk ];then
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destdir=/mnt/sdcard/
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fi
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if [ "${arg1:0:2}" == sd ];then
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destdir=/mnt/${1}/
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fi
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umount_partition()
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{
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if grep -qs "^/dev/$1 " /proc/mounts ; then
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umount -lf "${destdir}";
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fi
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if ! grep -qs "^/dev/$1 " /proc/mounts ; then
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rmdir "${destdir}";
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fi
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}
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mount_partition()
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{
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if [ ! -d "${destdir}" ]; then
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mkdir "${destdir}"
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if [ ! -d "${destdir}" ]; then
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mount -o remount -rw /
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mkdir "${destdir}"
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fi
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fi
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if ! mount -t auto "/dev/$1" "${destdir}" -o nodev,noexec,nosuid; then
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# failed to mount
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exit 1
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fi
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}
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check_if_boot_dev()
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{
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ret_val=`cat /proc/cmdline | grep "androidboot.bootdevice" |wc -l`
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if [ $ret_val -ne 0 ]; then
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boot_dev_list=`cat /proc/cmdline | awk '{ for ( n=1; n<=NF; n++ ) if($n ~ "androidboot.bootdevice") print $n }' | awk '{split($0,a, "=");print a[2]}'`
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boot_dev=`echo $boot_dev_list | awk '{print $NF}'`
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real_sysfs_path=`realpath /sys/class/block/$1`
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ret_val=`echo $real_sysfs_path | grep /sys/devices/ | grep $boot_dev | wc -l`
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fi
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echo $ret_val
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}
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create_symlink()
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{
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real_sysfs_path=`realpath /sys/class/block/$1`
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partition_name=`cat $real_sysfs_path/uevent | awk '{ for ( n=1; n<=NF; n++ ) if($n ~ "PARTNAME") print $n }' | awk '{split($0,a, "=");print a[2]}'`
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mkdir -p /dev/block/bootdevice/by-name/
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partition_name=/dev/block/bootdevice/by-name/$partition_name
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target_dev=/dev/$1
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ln -s $target_dev $partition_name
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}
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case "${ACTION}" in
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add|"")
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result=`check_if_boot_dev $1`
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if [ $result -eq 1 ]; then
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create_symlink $1 &
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else
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umount_partition ${1}
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mount_partition ${1}
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fi
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;;
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remove)
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umount_partition ${1}
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;;
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esac
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