70 lines
1.4 KiB
Bash
70 lines
1.4 KiB
Bash
#!/bin/sh
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#
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# $NetBSD: block-file-nbsd,v 1.3 2006/04/18 15:29:36 jlam Exp $
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#
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# Usage: block-file bind file [flags]
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#
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# The file argument is the path to the file to which a vnd(4) device
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# will be bound. The flags argument is an optional block of flags
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# to modify how the file is bound to the vnd(4) device. The valid
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# flags are:
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#
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# r bind the file as read-only
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#
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# Usage: block-file unbind node
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#
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# The node argument is the name of the device node to unbind.
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#
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case "$1" in
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bind)
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FILE="$2"
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FLAGS="$3"
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# Store the list of available vnd(4) devices in ``available_disks'',
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# and mark them as ``free''.
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#
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list=`/bin/ls -1 /dev/vnd[0-9]*d | sed "s,/dev/vnd,,;s,d,," | sort -n`
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for i in $list; do
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disk="vnd$i"
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available_disks="$available_disks $disk"
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eval $disk=free
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done
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# Mark the used vnd(4) devices as ``used''.
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for disk in `sysctl hw.disknames`; do
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case $disk in
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vnd[0-9]*) eval $disk=used ;;
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esac
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done
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vnconfig_flags=
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case "$FLAGS" in
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*r*) vnconfig_flags="$vnconfig_flags -r" ;;
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esac
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# Configure the first free vnd(4) device.
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for disk in $available_disks; do
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eval status=\$$disk
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vnconfig_cmd="vnconfig $vnconfig_flags /dev/${disk}d $FILE"
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if [ "$status" = "free" ] && \
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eval $vnconfig_cmd >/dev/null; then
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echo /dev/${disk}d
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exit 0
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fi
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done
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exit 1
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;;
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unbind)
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NODE="$2"
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vnconfig -u $NODE
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exit 0
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;;
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*)
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echo "Unknown command: $1"
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echo "Valid commands are: bind, unbind"
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exit 1
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;;
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esac
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