Function entry_for 

pub fn entry_for(
    root: &FsRoot,
    absolute: &Path,
    meta: &Metadata,
    sha256: Option<String>,
) -> FsEntry

Build an entry for one already-resolved path.

absolute must have come through the jail — resolve_existing, or a walk rooted at a resolved base. That precondition is what makes the unwrap_or_default() below sound: relative() returns None only for a path outside the scope, which a resolved path cannot be, so the default is unreachable rather than a fallback anyone should rely on.

If it were ever reached it would publish an entry with an empty path — a name that resolves to nothing, in a response a client reads as a real file. Both callers were checked when this was written (stat passes a resolve_existing result; list passes a walk entry from a resolved base). A third caller that can hand over an unresolved path must not use this function.