Very Computer

Hi!

In my program, I need to temporrarily disable the stderr.
the reason is when I call a purchased library function, it always
dumps a message "Not for Resale" to stderr. I wonder how I can
disable the stderr before I call that function and then enable
it later?

Thanks.

David

: Hi!

: In my program, I need to temporrarily disable the stderr.
: the reason is when I call a purchased library function, it always
: dumps a message "Not for Resale" to stderr. I wonder how I can
: disable the stderr before I call that function and then enable
: it later?

        stderr is just a file descriptor that you should just be able
to close just like any other file descriptor.  As far as reopening it
after it's been closed, I'm not sure -- you probably won't be able to,
since it's a constant (and opening it would try to redefine it).

--

[%> "Life is just a candle and your dreams must give it flame" - Neil Peart <%]
[%> "Defer no time, delays have dangerous ends!" - Shakespeare's Henry VI   <%]

        oldStderr=dup(2);
        newStderr=open("/dev/null",O_WRONLY);
        close(2)
        dup2(newStderr,2);
        close(newStderr);
        /* call you library routine here */
        close(2)
        dup2(oldStderr,2);

All error checks are missing.

73, Mario
--

Institut fuer Robotik und Prozessinformatik der TU Braunschweig
Hamburger Strasse 267, 38114 Braunschweig, Germany

stderr is NOT a constant, it might be a constant pointer.
Icarus

                --Ken Pizzini