/etc/xen/scripts/block-enbd is in xen-utils-common 4.1.4-3+deb7u9.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | #!/bin/bash
# Usage: block-enbd [bind server ctl_port |unbind node]
#
# The node argument to unbind is the name of the device node we are to
# unbind.
#
# This assumes you're running a correctly configured server at the other end!
dir=$(dirname "$0")
. "$dir/block-common.sh"
case "$command" in
add)
for dev in /dev/nd*; do
if nbd-client $2:$3 $dev; then
write_dev $dev
exit 0
fi
done
exit 1
;;
remove)
nbd-client -d $2
exit 0
;;
esac
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