[Huawei P30 Pro Guides, News, & Discussion] Dispossible:
To extra some files from EROFS image, we can mount the img. BUT, look at the results of [MENTION=3339433]ph03n!x[/MENTION]:

drwxr-xr-x. 2 root root 0 Aug 7 2018 3rdmodem
drwxr-xr-x. 2 root root 0 Aug 7 2018 3rdmodemnvm
drwxr-xr-x. 2 root root 0 Aug 7 2018 3rdmodemnvmbkp
drwxr-xr-x. 2 root root 0 Aug 7 2018 acct
lrw-r--r--. 1 root root 11 Aug 7 2018 bin -> /system/bin
lrw-r--r--. 1 root root 50 Aug 7 2018 bugreports -> /data/user_de/0/com.android.shell/files/bugreports
drwxrwx---. 2 ph03n1x 2001 0 Aug 7 2018 cache
lrw-r--r--. 1 root root 13 Aug 7 2018 charger -> /sbin/charger
dr-xr-xr-x. 2 root root 0 Aug 7 2018 config
drwxr-xr-x. 2 root root 0 Aug 7 2018 cust
lrw-r--r--. 1 root root 17 Aug 7 2018 d -> /sys/kernel/debug
drwxrwx--x. 2 ph03n1x ph03n1x 0 Aug 7 2018 data
drwxrwx--x. 2 ph03n1x ph03n1x 0 Aug 7 2018 data_old
lrw-------. 1 root root 23 Aug 7 2018 default.prop -> system/etc/prop.default
drwxr-xr-x. 2 root root 0 Aug 7 2018 dev
drwxr-xr-x. 2 root root 35 Aug 7 2018 dload
drwxr-xr-x. 2 root root 0 Aug 7 2018 eng
lrw-r--r--. 1 root root 11 Aug 7 2018 etc -> /system/etc
-rw-r-----. 1 root 2000 423 Aug 7 2018 fstab.zram1024m
-rw-r-----. 1 root 2000 423 Aug 7 2018 fstab.zram1280m
-rw-r-----. 1 root 2000 423 Aug 7 2018 fstab.zram1536m
-rw-r-----. 1 root 2000 422 Aug 7 2018 fstab.zram2240m
-rw-r-----. 1 root 2000 422 Aug 7 2018 fstab.zram256m
-rw-r-----. 1 root 2000 422 Aug 7 2018 fstab.zram4096m
-rw-r-----. 1 root 2000 422 Aug 7 2018 fstab.zram512m
-rw-r-----. 1 root 2000 422 Aug 7 2018 fstab.zram768m
-?????????? ? ? ? ? ? init
-rwxr-x---. 1 root 2000 1717 Aug 7 2018 init.environ.rc
-?????????? ? ? ? ? ? init.rc
-?????????? ? ? ? ? ? init.usb.configfs.rc
-?????????? ? ? ? ? ? init.usb.rc
-rwxr-x---. 1 root 2000 580 Aug 7 2018 init.zygote32.rc
-rwxr-x---. 1 root 2000 1042 Aug 7 2018 init.zygote64_32.rc
lrw-r--r--. 1 root root 8 Aug 7 2018 log -> /splash2
drwxr-xr-x. 2 root ph03n1x 0 Aug 7 2018 mnt
drwxr-xr-x. 2 root root 0 Aug 7 2018 modem_log
drwxr-xr-x. 2 root root 0 Aug 7 2018 odm
drwxr-xr-x. 2 root root 0 Aug 7 2018 oem
drwxr-xr-x. 6 root root 71 Aug 7 2018 patch
drwxr-xr-x. 2 root root 0 Aug 7 2018 patch_hw
drwxr-xr-x. 2 root root 0 Aug 7 2018 preload
drwxr-xr-x. 2 root root 0 Aug 7 2018 proc
drwxr-xr-x. 2 root root 0 Aug 7 2018 product
drwxr-xr-x. 2 root root 47 Aug 7 2018 res
-rw-r--r--. 1 root root 32 Aug 7 2018 resetFactory.cfg
drwxr-xr-x. 2 root root 0 Aug 7 2018 root
drwxr-x---. 2 root 2000 183 Aug 7 2018 sbin
lrw-r--r--. 1 root root 21 Aug 7 2018 sdcard -> /storage/self/primary
drwxr-xr-x. 2 root root 0 Aug 7 2018 sec_storage
drwxr-xr-x. 2 root root 0 Aug 7 2018 splash2
drwxr-x--x. 2 root 1028 0 Aug 7 2018 storage
drwxr-xr-x. 2 root root 0 Aug 7 2018 sys
drwxr-xr-x. 23 root root 478 Aug 7 2018 system
-?????????? ? ? ? ? ? ueventd.rc
drwxr-xr-x. 2 root 2000 0 Aug 7 2018 vendor
-rw-r--r--. 1 root root 524 Aug 7 2018 verity_key
drwxr-xr-x. 2 root root 0 Aug 7 2018 version

We can find that there are some files with ????. In practice, these file can't read and can't be copied to other path. So these method maybe have some bugs.

In EMUI10, Huawei used more ??? files. It means that most files can't be correctly unpacked.

Is there any way to unpack the EROFS image?