If the keystore daemon chdir's into /data/misc/keystore, /data can
never be unmounted. During bringup, it's helpful if we can umount
/data and reformat it.
Change-Id: Id5b93ee8a54846fd07e6e0e57bfd0a6fabf603ee
1. We will progressively migrate to this implementation.
2. For richc to have a quick review on the keymgmt part.
3. Add remove_key and make sure all functions are working.
4. Add permission check for get operation.
5. Return the retry count if unlock failed.
6. Add the reset operation for keystore reset.
7. Add the putfile shell command for putting the key value from file.
8. Fix the boundary issue during parsing command.
9. Use the ' ' as delimiter and reset the reply structure for each request.
10. Add change password retry count check.
11. Extract the read_marshal/write_marshal for certtool.h.
12. Remove the old implementation.
The keystore service is protected by the user 'keystore'. Only keystore
user/group can access the key content. All users are able to do the
following commands from shell as well:
listcerts
listuserkeys
installcert
removecert
installuserkey
removeuserkey
