sshfs with different gid on remote

I don't know how to mount a remote directory "remote_dir" on computer "remote", having remote gid "wgrp". Help is welcome.

  me@local$ sshfs me@remote:/remote_dir remote_as_wgrp ...wanted_options...

A workaround is to create a new user "me_wgrp" belonging to group "wgrp". But the problem seems conceptually so simple that I'm sure there is a solution.

Context:

I'm able to connect using ssh on remote compute, and then to change my gid:

  me@local$ ssh me@remote
  me@remote$ newgrp wgrp

Now I can create files in directories which are only writable by the开发者_JAVA百科 group "wgrp".

I have tried

  sshfs me@remote:/remote_dir remote_as_wgrp -o ssh_command='newgrp wgrp'

but sshfs seems blocked.

Also, if I try

  ssh me@remote 'newgrp wgrp'

ssh doesn't give the prompt, but it accepts commands.

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You should consider changing the default group on the remote host has newgrp will never return because it opens a new shell. "newgrp - return you to a prompt of a new shell."

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unfortunately it looks like newgrp group, or "newgrp group -" causes sshfs to not work in the newgrp environment. You won't be able to cd into the sshfs directory or ls, basically you'll get a permission denied error (and it's not due to permissions issues). You'll also notice that df no longer shows the sshfs fuse mount.

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Ten years after the question was asked, I needed this myself.

I found that it is now possible to add a parameter to sshfs:

sshfs -o sftp_server="sg <group> -c '/usr/lib/misc/sftp-server -u <umask>'" ...

where /usr/lib/misc/sftp-server is the location of sftp-server on the remote system, <group> is the desired group on the remote system, and -u <umask> is an optional way of providing a default umask for the particular sftp-server.