osx 'mount' local directory

Question

is it possible to mount a local directory into another one. Using perfoce I want to do something equivalent to symlinking a directory, but in a way that fools it into thinking it's really just another directory in the project.

I would like to do something like:

mount /foo/bar /home/foo/bar

Is this possible, and if so what options do I need to give it.

Answer 1

You can only mount different filesystems under the directory tree. You may be able to achieve what you're looking to do by hard linking the directories. OS X allows hard linking directories and to perforce it would like like different directories

Answer 2

To make a hard link from one directory to another, run:

$ ln /foo/bar /home/foo/bar

It is important to note that from the OS's perspective, both links are treated equally. You can delete /foo/bar and /home/foo/bar will remain a valid reference to the data on disk.

Answer 3

bindfs seems like what you're after...

Answer 4

mount --bind /foo/bar /foo/baz works on linux at least, so unless OSX doesn't allow this syntax (haven't got a mac to try on), or you need the extra features of bindfs, don't over-complicate ;)

Answer 5

--bind wont work

Answer 6

The BSD (and thus Darwin/OSX) method of achieving this is nullfs. It's not in a standard build of OSX, but perhaps it's possible to build from source if you have the time to play around with it.