this post was submitted on 04 Apr 2024
0 points (NaN% liked)

Linux

47233 readers
792 users here now

From Wikipedia, the free encyclopedia

Linux is a family of open source Unix-like operating systems based on the Linux kernel, an operating system kernel first released on September 17, 1991 by Linus Torvalds. Linux is typically packaged in a Linux distribution (or distro for short).

Distributions include the Linux kernel and supporting system software and libraries, many of which are provided by the GNU Project. Many Linux distributions use the word "Linux" in their name, but the Free Software Foundation uses the name GNU/Linux to emphasize the importance of GNU software, causing some controversy.

Rules

Related Communities

Community icon by Alpár-Etele Méder, licensed under CC BY 3.0

founded 5 years ago
MODERATORS
 

Hello !

Getting a bit annoyed with permission issues with samba and sshfs. If someone could give me some input on how to find an other more elegant and secure way to share a folder path owned by root, I would really appreciate it !

Context

  • The following folder path is owned by root (docker volume):

/var/lib/docker/volumes/syncthing_data/_data/folder

  • The child folders are owned by the user server

/var/lib/docker/volumes/syncthing_data/_data/folder

  • The user server is in the sudoers file
  • Server is in the docker groupe
  • fuse.confhas the user_allow_other uncommented

Mount point with sshfs

sudo sshfs server@10.0.0.100:/var/lib/docker/volumes/syncthing_data/_data/folder /home/user/folder -o allow_other

Permission denied

Things I tried

  • Adding other options like gid 0,27,1000 uid 0,27,1000 default_permissions...
  • Finding my way through stackoverflow, unix.stackexchange...

Solution I found

  1. Making a bind mount from the root owned path to a new path owned by server

sudo mount --bind /var/lib/docker/volumes/syncthing_data/_data/folder /home/server/folder

  1. Mount point with sshfs

sshfs server@10.0.0.100:/home/server/folder /home/user/folder

Question

While the above solution works, It overcomplicates my setup and adds an unecessary mount point to my laptop and fstab.

Isn't there a more elegant solution to work directly with the user server (which has root access) to mount the folder with sshfs directly even if the folder path is owned by root?

I mean the user has root access so something like:

sshfs server@10.0.0.100:/home/server/folder /home/user/folder -o allow_other should work even if the first part of the path is owned by root.

Changing owner/permission of the path recursively is out of question !

Thank you for your insights !

you are viewing a single comment's thread
view the rest of the comments
[–] redcalcium@lemmy.institute 0 points 5 months ago (1 children)

In that case, perhaps replacing -o sftp_server="/usr/bin/sudo /usr/lib/openssh/sftp-server" with -o sftp_server="/usr/bin/sudo -u <syncthing_user> /usr/lib/openssh/sftp-server" is a good compromise?

[–] Successful_Try543@feddit.de 0 points 5 months ago

Yes, the permissions of <syncthing_user> should be sufficient. I was not aware, that OP might not really need root access.