Plan 9 from Bell Labs’s /usr/web/sources/plan9/rc/bin/diskparts

Copyright © 2021 Plan 9 Foundation.
Distributed under the MIT License.
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#!/bin/rc
# diskparts [/dev/sd?? ...] - set up any disk partitions
rfork e
if (! test -e /dev/sdctl)
	bind -b '#S' /dev
if (~ $#* 0)
	*=`{ls -d /dev/sd* | uniq}

bind -a /bin/disk /bin >[2]/dev/null		# work with /boot too

# set up any /dev/sd partitions.
# note that really big disks (e.g., aoe devices) may have no mbr
# partition table because the mbr partition table can't cope with large
# block numbers, so we may have to examine the data file with prep if
# there's no plan9 file.  beware that `disk/prep -p data' on a disk with
# no plan 9 partition table will delete all extant partitions.
for(disk) {
	if(test -f $disk/data && test -f $disk/ctl)
		{ fdisk -p $disk/data |
			grep -v '^delpart ' >$disk/ctl } >[2]/dev/null
	if(test -f $disk/plan9)
		parts=($disk/plan9*)
	if not
		parts=($disk/data)
	for(part in $parts)
		if(test -f $part)
			 { prep -p $part |
				grep -v '^delpart ' >$disk/ctl } >[2]/dev/null
}

sysname=`{cat /dev/sysname}

# set up any fs(3) partitions
if (! test -e /dev/fs/ctl && test -e '#k/fs')
	bind -b '#k' /dev
if (~ $#sysname 1 && ! ~ $sysname '' &&
    test -r /cfg/$sysname/fsconfig && test -w /dev/fs/ctl)
	read -m /cfg/$sysname/fsconfig >/dev/fs/ctl

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