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.

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

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