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#!/usr/bin/perl
=head1 NAME
dh_installinitramfs - install initramfs hooks and setup maintscripts
=cut
use strict;
use warnings;
use Debian::Debhelper::Dh_Lib;
our $VERSION = DH_BUILTIN_VERSION;
=head1 SYNOPSIS
B<dh_installinitramfs> [S<B<debhelper options>>] [B<-n>]
=head1 DESCRIPTION
B<dh_installinitramfs> is a debhelper program that is responsible for
installing Debian package provided initramfs hooks.
If B<dh_installinitramfs> installs or detects one or more initramfs
hooks in the package, then it also automatically generates the noawait
trigger B<update-initframfs> command needed to interface with the
Debian initramfs system. This trigger is inserted into the
packaging by L<dh_installdeb(1)>.
=head1 FILES
=over 4
=item debian/I<package>.initramfs-hook
Assumed to be an initramfs hook that will be installed into F<<
usr/share/initramfs-tools/hooks/I<package> >> in the package build
directory. See B<HOOK SCRIPTS> in L<initramfs-tools(8)> for more
information about initramfs hooks.
=back
=head1 OPTIONS
=over 4
=item B<-n>, B<--no-scripts>
Do not add the B<update-initramfs> trigger even if it seems like the package
might need it. The option is called B<--no-scripts> for historical
reasons as B<dh_installinitramfs> would previously generate maintainer
scripts that called B<update-initramfs -u>.
Use this option, if you need to interface with the B<update-initramfs>
system that is not satisfied by the noawait trigger (e.g. because you need
the extra guarantees and head-aches of a await trigger).
=back
=head1 NOTES
Note that this command is not idempotent. L<dh_prep(1)> should be called
between invocations of this command. Otherwise, it may cause multiple
instances of the same text to be added to triggers file.
=cut
init();
# PROMISE: DH NOOP WITHOUT initramfs-hook tmp(usr/share/initramfs-tools/hooks) cli-options()
foreach my $package (@{$dh{DOPACKAGES}}) {
my $tmp = tmpdir($package);
my $hook_script = pkgfile($package, 'initramfs-hook');
my $has_hooks;
my $hook_dir = "${tmp}/usr/share/initramfs-tools/hooks";
if ($hook_script ne '') {
install_dir($hook_dir);
install_prog($hook_script, "${hook_dir}/${package}");
$has_hooks = 1;
} elsif (-d $hook_dir and not is_empty_dir($hook_dir)) {
$has_hooks = 1;
}
if ($has_hooks && ! $dh{NOSCRIPTS}) {
autotrigger($package, 'activate-noawait', 'update-initramfs');
}
}
=head1 SEE ALSO
L<debhelper(7)>
L<update-initramfs(8)>
L<initramfs-tools(8)>
This program is a part of debhelper.
=head1 AUTHOR
Niels Thykier <niels@thykier.net>
=cut
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