nbd_set_debug(3)                    LIBNBD                    nbd_set_debug(3)


NAME
       nbd_set_debug - set or clear the debug flag

SYNOPSIS
        #include <libnbd.h>

        int nbd_set_debug (
              struct nbd_handle *h, bool debug
            );

DESCRIPTION
       Set or clear the debug flag.  When debugging is enabled, debugging
       messages from the library are printed to stderr, unless a debugging
       callback has been defined too (see nbd_set_debug_callback(3)) in which
       case they are sent to that function.  This flag defaults to false on
       newly created handles, except if "LIBNBD_DEBUG=1" is set in the
       environment in which case it defaults to true.

RETURN VALUE
       If the call is successful the function returns 0.

ERRORS
       On error -1 is returned.

       Refer to "ERROR HANDLING" in libnbd(3) for how to get further details
       of the error.

       The following parameters must not be NULL: "h".  For more information
       see "Non-NULL parameters" in libnbd(3).

VERSION
       This function first appeared in libnbd 1.0.

       If you need to test if this function is available at compile time check
       if the following macro is defined:

        #define LIBNBD_HAVE_NBD_SET_DEBUG 1

SEE ALSO
       nbd_create(3), nbd_set_debug_callback(3), nbd_set_handle_name(3),
       libnbd(3).

AUTHORS
       Eric Blake

       Richard W.M. Jones

COPYRIGHT
       Copyright Red Hat

LICENSE
       This library is free software; you can redistribute it and/or modify it
       under the terms of the GNU Lesser General Public License as published
       by the Free Software Foundation; either version 2 of the License, or
       (at your option) any later version.

       This library is distributed in the hope that it will be useful, but
       WITHOUT ANY WARRANTY; without even the implied warranty of
       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
       Lesser General Public License for more details.

       You should have received a copy of the GNU Lesser General Public
       License along with this library; if not, write to the Free Software
       Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
       02110-1301 USA

libnbd-1.20.0                     2024-05-31                  nbd_set_debug(3)