CODEWITHSUNDEEP
clinuxfilesystemsmountfuse
milo
milo

Reputation: 1220

How to bind root (/) to itself with fuse on linux?

I'm writing a fuse file system that mount one directory to itself. I want to log some calls (flush for example). I've started to adapt fuse tutorial sample code. If I try to bind any directory it works great:

./bbfs -o nonempty ./test ./test

but if I try to bind particular root directory ("/"):

sudo ./bbfs -o nonempty / /

no one line is in logfile.

Is it possible?

My mangled version of sample program. I've changed only bbfs.c file.

Upvotes: 4

Views: 2274

Answers (1)

user149341
user149341

Reputation:

You can't mount a FUSE filesystem (or any other type of filesystem, for that matter) at /, because your root filesystem is already there.

Doing so would be disastrous anyway, as mounting a filesystem at a path makes any files which previously existed under that path inaccessible. You can't use FUSE as a filter like this -- you will need to find another solution to whatever it is you're trying to do.

Upvotes: 1

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