Android存储设备管理

相关链接：

http://source.android.com/devices/tech/storage/index.html
http://source.android.com/devices/tech/storage/config.html
http://source.android.com/devices/tech/storage/config-example.html

storage_list.xml示例： ./device/asus/flo/overlay/frameworks/base/core/res/res/xml/storage_list.xml

init.hardware.rc示例：./device/asus/flo/init.flo.rc

on init
    # See storage config details at http://source.android.com/tech/storage/
    mkdir /mnt/shell/emulated 0700 shell shell
    mkdir /storage/emulated 0555 root root

    export EXTERNAL_STORAGE /storage/emulated/legacy
    export EMULATED_STORAGE_SOURCE /mnt/shell/emulated
    export EMULATED_STORAGE_TARGET /storage/emulated

    # Support legacy paths
    symlink /storage/emulated/legacy /sdcard
    symlink /storage/emulated/legacy /mnt/sdcard
    symlink /storage/emulated/legacy /storage/sdcard0
    symlink /mnt/shell/emulated/0 /storage/emulated/legacy

on fs
    mount_all ./fstab.flo
    restorecon_recursive /persist
    setprop ro.crypto.fuse_sdcard true
    write /sys/kernel/boot_adsp/boot 1


# virtual sdcard daemon running as media_rw (1023)
service sdcard /system/bin/sdcard -u 1023 -g 1023 -l /data/media /mnt/shell/emulated
    class late_start

fstab.hardware示例：./device/asus/flo/fstab.flo

# Android fstab file.
#                                               
# The filesystem that contains the filesystem checker binary (typically /system) cannot
# specify MF_CHECK, and must come before any filesystems that do specify MF_CHECK

/dev/block/platform/msm_sdcc.1/by-name/system       /system         ext4    ro,barrier=1                                                                 wait
/dev/block/platform/msm_sdcc.1/by-name/cache        /cache          ext4    noatime,nosuid,nodev,barrier=1,data=ordered,nomblk_io_submit,errors=panic    wait,check
/dev/block/platform/msm_sdcc.1/by-name/userdata     /data           ext4    noatime,nosuid,nodev,barrier=1,data=ordered,nomblk_io_submit,errors=panic    wait,check,encryptable=/dev/block/platform/msm_sdcc.1/by-name/metadata
/dev/block/platform/msm_sdcc.1/by-name/persist      /persist        ext4    nosuid,nodev,barrier=1,data=ordered,nodelalloc                               wait
/dev/block/platform/msm_sdcc.1/by-name/boot         /boot           emmc    defaults                                                                     defaults
/dev/block/platform/msm_sdcc.1/by-name/recovery     /recovery       emmc    defaults                                                                     defaults
/dev/block/platform/msm_sdcc.1/by-name/misc         /misc           emmc    defaults                                                                     defaults