Can’t rename file through SFTP even though user has permissions

I have two computers both running Windows 10.

Computer A is running an ssh server, and computer B tries to connect through sftp.

I have the sshd_config set as follows:

Subsystem   sftp    sftp-server.exe

AllowUsers test
ForceCommand internal-sftp
ChrootDirectory "E:MyData"

User test doesn’t belong to any group.

Inside E:MyData there is a file named test.txt, and user test has permissions to read, write and modify it on computer A.

Connecting through sftp works fine, and I can read the file properly. But when I try to rename or delete it I get an error saying I don’t have enough permissions:

> sftp test@myip
> rename test.txt new.txt
Couldn't rename file "/test.txt" to "/new.txt": Permission denied

What am I missing?

Answer

The “permissions to read, write and modify” do not give you permissions to rename nor delete.

The renaming and deleting are considered operations with a parent directory, not with the file. So you need permissions to modify the parent directory. That’s true both on Windows and *nix. It’s not really SFTP question.