This file is indexed.

/usr/share/initramfs-tools/hooks/btrfs is in btrfs-tools 3.17-1.1.

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
#!/bin/sh

set -e

PREREQ=""

prereqs()
{
	echo "${PREREQ}"
}

case "${1}" in
	prereqs)
		prereqs
		exit 0
		;;
esac

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

if [ -x /sbin/btrfs ]
then
	copy_exec /sbin/btrfs /sbin
	copy_exec /sbin/btrfs-zero-log
	if [ ! -x /usr/share/initramfs-tools/hooks/fsck ] && [ ! -x /etc/initramfs-tools/hooks/fsck ]
	then
	    copy_exec /sbin/fsck.btrfs /sbin
	fi
fi