1nbdkit-example3-plugin(1) NBDKIT nbdkit-example3-plugin(1)
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6 nbdkit-example3-plugin - example nbdkit plugin
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9 nbdkit example3 [size=SIZE]
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12 nbdkit example3 size=1G
13 guestfish --ro --format=raw -a nbd://localhost
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16 "nbdkit-example3-plugin" is an example nbdkit(1) plugin.
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18 On each connection, it generates a temporary writable block device of
19 size "SIZE". The disk is thrown away when the client disconnects.
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21 The "size=SIZE" parameter can use a number of common formats to specify
22 the size, eg. "100M", "2G". If the parameter is omitted, it defaults
23 to 100M.
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25 Mainly this is useful for testing nbdkit and as an example for writing
26 nbdkit plugins (nbdkit-plugin(3)).
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29 $plugindir/nbdkit-example3-plugin.so
30 The plugin.
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32 Use "nbdkit --dump-config" to find the location of $plugindir.
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35 "nbdkit-example3-plugin" first appeared in nbdkit 1.0.
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38 https://github.com/libguestfs/nbdkit/blob/master/plugins/example3/example3.c,
39 nbdkit(1), nbdkit-plugin(3)
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42 Richard W.M. Jones
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45 Copyright (C) 2013 Red Hat Inc.
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48 Redistribution and use in source and binary forms, with or without
49 modification, are permitted provided that the following conditions are
50 met:
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52 · Redistributions of source code must retain the above copyright
53 notice, this list of conditions and the following disclaimer.
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55 · Redistributions in binary form must reproduce the above copyright
56 notice, this list of conditions and the following disclaimer in the
57 documentation and/or other materials provided with the
58 distribution.
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60 · Neither the name of Red Hat nor the names of its contributors may
61 be used to endorse or promote products derived from this software
62 without specific prior written permission.
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64 THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND ANY
65 EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
66 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
67 PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR CONTRIBUTORS BE
68 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
69 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
70 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
71 BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
72 WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
73 OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
74 ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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78nbdkit-1.24.2 2021-03-02 nbdkit-example3-plugin(1)