1nbd_set_debug(3)                    LIBNBD                    nbd_set_debug(3)
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NAME

6       nbd_set_debug - set or clear the debug flag
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SYNOPSIS

9        #include <libnbd.h>
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11        int nbd_set_debug (struct nbd_handle *h, bool debug);
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DESCRIPTION

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

22       If the call is successful the function returns 0.
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ERRORS

25       On error "-1" is returned.
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27       Refer to "ERROR HANDLING" in libnbd(3) for how to get further details
28       of the error.
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30       The following parameters must not be NULL: "h".  For more information
31       see "Non-NULL parameters" in libnbd(3).
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VERSION

34       This function first appeared in libnbd 1.0.
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36       If you need to test if this function is available at compile time check
37       if the following macro is defined:
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39        #define LIBNBD_HAVE_NBD_SET_DEBUG 1
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SEE ALSO

42       nbd_create(3), nbd_set_debug_callback(3), nbd_set_handle_name(3),
43       libnbd(3).
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AUTHORS

46       Eric Blake
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48       Richard W.M. Jones
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51       Copyright (C) 2019-2021 Red Hat Inc.
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LICENSE

54       This library is free software; you can redistribute it and/or modify it
55       under the terms of the GNU Lesser General Public License as published
56       by the Free Software Foundation; either version 2 of the License, or
57       (at your option) any later version.
58
59       This library is distributed in the hope that it will be useful, but
60       WITHOUT ANY WARRANTY; without even the implied warranty of
61       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
62       Lesser General Public License for more details.
63
64       You should have received a copy of the GNU Lesser General Public
65       License along with this library; if not, write to the Free Software
66       Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
67       02110-1301 USA
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71libnbd-1.14.2                     2023-01-03                  nbd_set_debug(3)
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