1nbd_aio_get_fd(3)                   LIBNBD                   nbd_aio_get_fd(3)
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NAME

6       nbd_aio_get_fd - return file descriptor associated with this connection
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SYNOPSIS

9        #include <libnbd.h>
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11        int nbd_aio_get_fd (
12              struct nbd_handle *h
13            );
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DESCRIPTION

16       Return the underlying file descriptor associated with this connection.
17       You can use this to check if the file descriptor is ready for reading
18       or writing and call nbd_aio_notify_read(3) or nbd_aio_notify_write(3).
19       See also nbd_aio_get_direction(3).  Do not do anything else with the
20       file descriptor.
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RETURN VALUE

23       This call returns a file descriptor.
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ERRORS

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

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

43       nbd_aio_get_direction(3), nbd_aio_notify_read(3),
44       nbd_aio_notify_write(3), nbd_create(3), libnbd(3).
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AUTHORS

47       Eric Blake
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49       Richard W.M. Jones
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52       Copyright Red Hat
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LICENSE

55       This library is free software; you can redistribute it and/or modify it
56       under the terms of the GNU Lesser General Public License as published
57       by the Free Software Foundation; either version 2 of the License, or
58       (at your option) any later version.
59
60       This library is distributed in the hope that it will be useful, but
61       WITHOUT ANY WARRANTY; without even the implied warranty of
62       MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
63       Lesser General Public License for more details.
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65       You should have received a copy of the GNU Lesser General Public
66       License along with this library; if not, write to the Free Software
67       Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
68       02110-1301 USA
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72libnbd-1.16.5                     2023-09-26                 nbd_aio_get_fd(3)
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