How to copy to overlayFS using adb shell?

[Uzver123]

Using ADB shell command to write directly to location gives error even after overlayFS is installed:

mv: /vendor/etc/camera/camxoverridesettings.txt: Read-only file system

I found this answer suggesting need to write to location where overlayFS is mounted instead /tmp/overlay/, but on android this path is not existing, what's the path where overlayFS is mounted so i can use command line to move files to read only partitions?

[link-fgfgui]

same problem

[Uzver123]

I found command mount in android terminal shows list of all mounts, got to figure out which mount corresponds to what partition though because too many.

You can run

adb shell
su
mount

one of the records

overlay on /vendor/etc type overlay (ro,seclabel,relatime,lowerdir=/vendor,upperdir=/dev/mount_overlayfs/upper/vendor,workdir=/dev/mount_overlayfs/worker/64521/2)

lowerdir=/vendor
upperdir=/dev/mount_overlayfs/upper/vendor
workdir=/dev/mount_overlayfs/worker/64521/2

ls: /dev/mount_overlayfs/: No such file or directory

[Uzver123]

Solution turned out to be was very simple

find the overlay mount i.e. /odm/lib64
mount | grep /odm/lib64

remount as RW

mount -o remount,rw /odm/lib64

now can with ADB push files to /odm/lib64