[Solved] Shared directory between users with static perm.

[corec]

Hi all,

I'm trying to make a shared directory that all users could access with read/write permissions. I've used SETGID flag to preserve the group-id. Problem is that if some program writes a file to shared folder without setting write-flag for the group-id, nobody else in the group can modify the file.

Here are the specs of the directory:
drwxrws--- root users /home/Shared

Ideal solution to this would be that every time somebody creates or modifies a file or directory, permissions are adjusted immediately.

I've already made little research but not found any clear solution:

1. Make a bash script to alter permissions and put it to cron so that it would be executed every hour or so. Drawback of this approach is that the file permissions are checked in timed intervals.
   
   
2. While I was inspecting the possibility of using mount --bind (which can't use -o to set gid perm. with --bind btw) I found bindfs (http://code.google.com/p/bindfs/). bindfs is a FUSE filesystem for mirroring a directory to another directory, similarly to mount --bind. The permissions of the mirrored directory can be altered in various ways. With bindfs I could alter group permissions on the fly. Drawback of this is that I should have the shared folder in somewhere else to be able to mount it to /home/Shared. Also I didn't find an ebuild for bindfs anywhere.
   

From the solutions the latter one is definitely the better one though I'm little bit cautious when it comes to using a fuse system. I wouldn't want it to corrupt my files.

Do you guys have any suggestions to this?

Cheers,
corec

[aceFruchtsaft]

[corec]