You can use :redirto send message output to a register or file.
redir @c
cs f s symbol
redir END
Now you can put the register cin the file and filter it.
I do not get many results from cscope (all this in quickfix), but it will do what you describe.
In general, you can filter shell commands (see :help :!cmd) with |(bar):
:!echo 0updateView | cscope -dl | grep global
ex ( ):
:if &ft != 'help' | silent! cd %:p:h | endif
, ex , redir. , Benoit .