init-system-helpers (1.18+dyson1) unstable; urgency=mediumHEADdyson/1.18+dyson1master

  * Package for Dyson
  * deb-systemd-helper and deb-systemd-invoke work only on Linux; on
    other archs they do nothing and return 0
  * dh_systemd_enable and dh_systemd_start work only for Linux; for
    other archs they do nothing and return 0

4 files changed, 42 insertions, 0 deletions

diff --git a/script/deb-systemd-helper b/script/deb-systemd-helper
index 59e76a0..8ab1ad8 100755
--- a/script/deb-systemd-helper
+++ b/script/deb-systemd-helper
@@ -78,6 +78,11 @@ filing a bugreport.
 
 =back
 
+=head1 NOTES
+
+This command currently works on Linux only, on other Debian archs
+it does nothing and returns 0;
+
 =cut
 
 use strict;
@@ -444,6 +449,12 @@ if (!$ENV{DPKG_MAINTSCRIPT_PACKAGE}) {
     exit 1;
 }
 
+my $deb_host_arch_os = `dpkg-architecture -qDEB_HOST_ARCH_OS`;
+if ($deb_host_arch_os !~ /linux/) {
+    debug "systemd is unsupported on $deb_host_arch_os";
+    exit(0);
+}
+
 if ($action eq 'purge') {
     $ENV{_DEB_SYSTEMD_HELPER_PURGE} = 1;
     $action = 'disable';
diff --git a/script/deb-systemd-invoke b/script/deb-systemd-invoke
index fbc5aea..c9254ce 100755
--- a/script/deb-systemd-invoke
+++ b/script/deb-systemd-invoke
@@ -47,6 +47,11 @@ systemd unit files. It is specifically NOT intended to be used interactively by
 users. Instead, users should run systemd and use systemctl, or not bother about
 the systemd enabled state in case they are not running systemd.
 
+=head1 NOTES
+
+This command currently works on Linux only, on other Debian archs
+it does nothing and returns 0;
+
 =cut
 
 use strict;
@@ -57,6 +62,12 @@ if (@ARGV < 2) {
     exit 1;
 }
 
+my $deb_host_arch_os = `dpkg-architecture -qDEB_HOST_ARCH_OS`;
+if ($deb_host_arch_os !~ /linux/) {
+    print STDERR "systemd is unsupported on $deb_host_arch_os\n";
+    exit(0);
+}
+
 my $policyhelper = '/usr/sbin/policy-rc.d';
 my @units = @ARGV;
 my $action = shift @units;
diff --git a/script/dh_systemd_enable b/script/dh_systemd_enable
index 564dce3..e2948df 100755
--- a/script/dh_systemd_enable
+++ b/script/dh_systemd_enable
@@ -11,6 +11,13 @@ use Debian::Debhelper::Dh_Lib;
 use File::Find;
 use Text::ParseWords qw(shellwords); # in core since Perl 5
 
+my $deb_host_arch_os = dpkg_architecture_value('DEB_HOST_ARCH_OS');
+if ($deb_host_arch_os ne 'linux')
+{
+    warning("systemd is unsupported on $deb_host_arch_os, doing nothing");
+    exit(0);
+}
+
 =head1 SYNOPSIS
 
 B<dh_systemd_enable> [S<I<debhelper options>>] [B<--no-enable>] [S<I<unit file> ...>]
@@ -70,6 +77,9 @@ Note that B<dh_systemd_enable> should be run before B<dh_installinit>.
 The default sequence in B<dh> does the right thing, this note is only relevant
 when you are calling B<dh_systemd_enable> manually.
 
+This command currently works for Linux only, for other Debian archs
+it does nothing and returns 0;
+
 =cut
 
 init(options => {
diff --git a/script/dh_systemd_start b/script/dh_systemd_start
index bd02d92..ccd6c1d 100755
--- a/script/dh_systemd_start
+++ b/script/dh_systemd_start
@@ -12,6 +12,13 @@ use File::Find;
 use Text::ParseWords qw(shellwords); # in core since Perl 5
 use Cwd qw(getcwd abs_path);
 
+my $deb_host_arch_os = dpkg_architecture_value('DEB_HOST_ARCH_OS');
+if ($deb_host_arch_os ne 'linux')
+{
+    warning("systemd is unsupported on $deb_host_arch_os, doing nothing");
+    exit(0);
+}
+
 =head1 SYNOPSIS
 
 B<dh_systemd_start> [S<I<debhelper options>>] [B<--restart-after-upgrade>] [B<--no-restart-on-upgrade>] [S<I<unit file> ...>]
@@ -66,6 +73,9 @@ can detect corresponding SysV init scripts. The default sequence in B<dh> does
 the right thing, this note is only relevant when you are calling
 B<dh_systemd_start> manually.
 
+This command currently works for Linux only, for other Debian archs
+it does nothing and returns 0;
+
 =cut
 
 init(options => {