diff --git a/rootdir/Android.mk b/rootdir/Android.mk index ebc0cde27..2dbdb6022 100644 --- a/rootdir/Android.mk +++ b/rootdir/Android.mk @@ -72,7 +72,7 @@ endif # # create some directories (some are mount points) and symlinks LOCAL_POST_INSTALL_CMD := mkdir -p $(addprefix $(TARGET_ROOT_OUT)/, \ - dev proc sys system data odm oem acct config storage mnt apex debug_ramdisk \ + dev proc sys system data data_mirror odm oem acct config storage mnt apex debug_ramdisk \ linkerconfig $(BOARD_ROOT_EXTRA_FOLDERS)); \ ln -sf /system/bin $(TARGET_ROOT_OUT)/bin; \ ln -sf /system/etc $(TARGET_ROOT_OUT)/etc; \ diff --git a/rootdir/init.rc b/rootdir/init.rc index 2ec066910..b89c45e0d 100644 --- a/rootdir/init.rc +++ b/rootdir/init.rc @@ -650,12 +650,35 @@ on post-fs-data mkdir /data/user 0711 system system encryption=None mkdir /data/user_de 0711 system system encryption=None - symlink /data/data /data/user/0 + + # Unlink /data/user/0 if we previously symlink it to /data/data + rm /data/user/0 + + # Bind mount /data/user/0 to /data/data + mkdir /data/user/0 0700 system system encryption=None + mount none /data/data /data/user/0 bind rec # Special-case /data/media/obb per b/64566063 mkdir /data/media 0770 media_rw media_rw encryption=None mkdir /data/media/obb 0770 media_rw media_rw encryption=Attempt + # A tmpfs directory, which will contain all apps CE DE data directory that + # bind mount from the original source. + chown root root /data_mirror + chmod 0700 /data_mirror + mount tmpfs tmpfs /data_mirror mode=0700,uid=0,gid=1000 nodev noexec nosuid + restorecon /data_mirror + mkdir /data_mirror/data_ce 0700 root root + mkdir /data_mirror/data_de 0700 root root + + # Create CE and DE data directory for default volume + mkdir /data_mirror/data_ce/null 0700 root root + mkdir /data_mirror/data_de/null 0700 root root + + # Bind mount CE and DE data directory to mirror's default volume directory + mount none /data/user /data_mirror/data_ce/null bind rec + mount none /data/user_de /data_mirror/data_de/null bind rec + mkdir /data/cache 0770 system cache encryption=Require mkdir /data/cache/recovery 0770 system cache mkdir /data/cache/backup_stage 0700 system system