/usr/share/initramfs-tools/scripts/casper-bottom/13swap is in casper 1.394.
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 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | #!/bin/sh
PREREQ=""
DESCRIPTION="Setting up swap..."
prereqs()
{
echo "$PREREQ"
}
case $1 in
# get pre-requisites
prereqs)
prereqs
exit 0
;;
esac
. /scripts/casper-functions
log_begin_msg "$DESCRIPTION"
devices=""
for device in /dev/[hsv]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
swapon $device || true
done
log_end_msg
|