/usr/share/initramfs-tools/hooks/casper 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 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 | #!/bin/sh -e
# initramfs hook for casper
PREREQS=""
# Output pre-requisites
prereqs()
{
echo "$PREREQS"
}
case "$1" in
prereqs)
prereqs
exit 0
;;
esac
. /usr/share/initramfs-tools/hook-functions
manual_add_modules unionfs
manual_add_modules aufs
manual_add_modules overlay
# unionfs-fuse, if available
if [ -x /usr/bin/unionfs-fuse ]; then
copy_exec /usr/bin/unionfs-fuse /bin
fi
# We need losetup
copy_exec /sbin/losetup /sbin
# Casper hooks
mkdir -p ${DESTDIR}/lib/casper
copy_exec /usr/share/casper/casper-reconfigure /bin
copy_exec /usr/share/casper/casper-preseed /bin
copy_exec /usr/share/casper/casper-set-selections /bin
mkdir -p ${DESTDIR}/lib/udev/rules.d
cp -p /lib/udev/rules.d/60-cdrom_id.rules ${DESTDIR}/lib/udev/rules.d/
copy_exec /lib/udev/cdrom_id /lib/udev
copy_exec /usr/bin/eject /bin
copy_exec /sbin/swapon /sbin
# cifs boot
if [ -x /sbin/mount.cifs ]; then
copy_exec /sbin/mount.cifs /sbin
for x in cifs md4 des_generic; do
manual_add_modules ${x}
done
fi
# squashfs
manual_add_modules squashfs
manual_add_modules loop
# random file system modules
manual_add_modules vfat
manual_add_modules ext3
manual_add_modules ext4
manual_add_modules btrfs
# needed for vfat. :-/
manual_add_modules nls_cp437
manual_add_modules nls_utf8
manual_add_modules nls_iso8859-1
# cdrom modules
manual_add_modules sr_mod
manual_add_modules ide-cd
manual_add_modules sbp2
manual_add_modules ohci1394
# integrity check
copy_exec /usr/lib/casper/casper-md5check /bin
cp /usr/share/initramfs-tools/scripts/casper-functions $DESTDIR/scripts
cp /usr/share/initramfs-tools/scripts/casper-helpers $DESTDIR/scripts
auto_add_modules net
if [ -e /etc/casper.conf ]; then
mkdir -p ${DESTDIR}/etc
cp /etc/casper.conf ${DESTDIR}/etc
fi
if [ "$CASPER_GENERATE_UUID" ]; then
# Unique ID
mkdir -p $DESTDIR/conf
uuidgen -r > $DESTDIR/conf/uuid.conf
fi
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