Add a set of flags to rmt(8) to make it run in a restricted mode,

designed to work with rdump(8) to remote disk.

  -d <directory>   confines rmt to operate within a single directory.
  -r               enforces read-only mode.
  -w               enforces write-only mode.

This is quite usable with public ssh key setup, e.g. having the following in .ssh/authorized/keys:

  command="/etc/rmt -rd /backups/machine.example.conf",no-agent-forwarding,... ssh-rsa AAAAB3...

ok semarie@

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