This file is indexed.

/usr/share/initramfs-tools/hooks/cryptkeyctl is in cryptsetup 2:2.0.2-1ubuntu1.

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
#!/bin/sh

set -e

PREREQ="cryptroot"

prereqs()
{
	echo "$PREREQ"
}

case $1 in
prereqs)
	prereqs
	exit 0
	;;
esac

. /usr/share/initramfs-tools/hook-functions

# Hooks for loading keyctl software into the initramfs

# Check whether cryptroot hook has installed decrypt_keyctl script
if [ ! -x ${DESTDIR}/lib/cryptsetup/scripts/decrypt_keyctl ]; then
    exit 0
fi

# Install binaries into initramfs
copy_exec /bin/keyctl
copy_exec /bin/stty

exit 0