vold: add support for ext4 media

Depends on:
http://review.cyanogenmod.org/31202
http://review.cyanogenmod.org/31211

Result:
http://pastebin.com/nzUbvW7K

Change-Id: I5bd227e637f2a1ed4d13a2eb81390c56c953f482

Merge tag 'android-4.2.2_r1' of https://android.googlesource.com/plat…

…form/system/vold into 1.1

Android 4.2.2 release 1

vold: do not try and unmount asec when unmounting non-primary storage

patch was lost in the merge

Change-Id: I9de6c2dc99c1484ac86fec7ee94eea5977a4aa11

vold: extend the syntax of vold.fstab

Now vold.fstab can accept the following:

dev_mount sdcard /mnt/sdcard auto <devpath>       // use normal DirectVolume
dev_mount sdcard /mnt/sdcard auto SDCARD=dev_node // use AutoVolume for specified device node
dev_mount sdcard /mnt/sdcard auto                 // use AutoVolume to mount USB/MMC/SD automatically

Change-Id: I5c74fcce9cee552d0e3d51898865bb4e11c461dc

Check BOARD_VOLD_EMMC_SHARES_DEV_MAJOR to share volumes to

get the correct partition number for the volume.

Change-Id: I6c6dfc5bb617f5f2a7298d647f75ba58b3846f99

Check BOARD_VOLD_EMMC_SHARES_DEV_MAJOR to share volumes to

get the correct partition number for the volume.

Change-Id: I6c6dfc5bb617f5f2a7298d647f75ba58b3846f99

Check BOARD_VOLD_EMMC_SHARES_DEV_MAJOR to share volumes to

get the correct partition number for the volume.

Change-Id: I6c6dfc5bb617f5f2a7298d647f75ba58b3846f99

vold: Don't mess with EXT when a FAT partition was just dirty

When fsck_msdos returns 4, that means it fixed things on the partition,
so it should be allowed to loop and try again.  So we shouldn't be
gobbling all non-zero returns as a sign to try EXT instead.

This patch tries to better reconcile the return codes between fsck_msdos
and e2fsck with a common enum status.  The original rc is still kept so
that unknown codes can still be reported in the default case of the
switch.

Change-Id: Ibb749948780759e41ffc25d77c5c69cc562dc0d1