How to create a link outside of the jail, but accessable within the jail?

Question

I have created a chroot jail, but now I want to be able to create a link within the jail which links outside of the jail. Is this possible?

becomingwisest · Answer 1 · 2012-01-18 00:15:39Z

up vote 4 down vote accepted

The only method I can think of is used of a bind mount. A quick google found http://docs.1h.com/Bind_mounts

answered Jan 18 at 0:15

This is, pretty much the only way to do it, and it's how openvz does it. – Tom O'Connor Jan 18 at 0:22

1

Yes, indeed: mount --bind /old /new – yarek Jan 18 at 0:37

Thanks, worked perfectly. – chudapati09 Jan 18 at 22:21

feedback

user842313 · Answer 2 · 2012-01-18 00:25:33Z

Yes, as Christopher said, a bind mount will work. But I think it will work only with directories and not at file level.

If you need file links you can use hard links but it will only work within a Linux ext filesystem (don't know if other fs support it)

See Here for a description of the difference between hard and soft links.

2 Answers