look in /proc to find the process start time so that we can verify that this pid has started after ourself.

Returns a []byte slice if the xattr is set and nil otherwise Requires path and its attribute as arguments.

Returns the size of xattrs and nil error Requires path, takes allocated []byte or nil as last argument.

RunningInUserNS detects whether we are currently running in a user namespace.

Setgid sets the gid of the calling thread to the specified gid.

SetSubreaper sets the value i as the subreaper setting for the calling process.

Setuid sets the uid of the calling thread to the specified uid.

If arg2 is nonzero, set the "child subreaper" attribute of the calling process; if arg2 is zero, unset the attribute.