To support processes running in mount namespaces that aren't the root one we can access the files in their mount via procfs's root directory.
Not only this was broken in terms of the paths being joined, but also the way Path::join works is that the joined path starts with a slash (so it's recognised as absolute) it will replace the whole path (!).
To support processes running in mount namespaces that aren't the root one we can access the files in their mount via procfs's root directory.
Not only this was broken in terms of the paths being joined, but also the way
Path::joinworks is that the joined path starts with a slash (so it's recognised as absolute) it will replace the whole path (!).This was reported upstream in https://github.com/rust-lang/rust/issues/16507.
Test Plan
Ran lightswitch for a little bit, and containerised workloads worked fine.