void-packages/srcpkgs/xbps-casper/files/scripts/casper-bottom/13swap

#!/bin/sh

PREREQ=""
DESCRIPTION="Setting up swap"
FSTAB=${rootmnt}/etc/fstab

. /scripts/casper-functions

prereqs()
{
       echo "$PREREQ"
}

case $1 in
# get pre-requisites
prereqs)
       prereqs
       exit 0
       ;;
esac

log_begin_msg "$DESCRIPTION"

devices=""
for device in /dev/[hs]d[a-z][0-9]*; do
    if ! [ -b "$device" ]; then
        continue
    fi

    /sbin/blkid -o udev -p ${device%%[0-9]*} | \
	grep -q "^ID_FS_USAGE=raid" && continue

    magic=$(/bin/dd if="$device" bs=4086 skip=1 count=1 2>/dev/null | /bin/dd bs=10 count=1 2>/dev/null) || continue
    
    if [ "$magic" = "SWAPSPACE2" -o "$magic" = "SWAP-SPACE" ]; then
#        log "Found $device"
        devices="$devices $device"
    fi
done

for device in $devices; do
    cat >> $FSTAB <<EOF
$device swap swap defaults 0 0
EOF
done

log_end_msg