The problem is that the error message has to be transferred from
the remote end and there are a limited number of status messages.
These are defined by the (draft) RFC for the protocol. OpenSSH
supports the following:
SSH_FX_OK 0
SSH_FX_EOF 1
SSH_FX_NO_SUCH_FILE 2
SSH_FX_PERMISSION_DENIED 3
SSH_FX_FAILURE 4
SSH_FX_BAD_MESSAGE 5
SSH_FX_NO_CONNECTION 6
SSH_FX_CONNECTION_LOST 7
SSH_FX_OP_UNSUPPORTED 8
It looks like there are more status codes defined by the draft
specification(s). For example:
SSH_FX_WRITE_PROTECT 12
But that is not currently supported by OpenSSH. I don't know whether
there is interest in supporting other sftp v3 error codes in OpenSSH.
- todd
