From 0d13caa0714c32af45165310e93f62c965f45b01 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Zbigniew=20J=C4=99drzejewski-Szmek?= <zbyszek@in.waw.pl>
Date: Thu, 12 Oct 2017 22:34:54 +0200
Subject: [PATCH] units: replace remote-cryptsetup-pre.target with
 remote-fs-pre.target

remote-cryptsetup-pre.target was designed as an active unit (that pulls in
network-online.target), the opposite of remote-fs-pre.target (a passive unit,
with individual provider services ordering itself before it and pulling it in,
for example iscsi.service and nfs-client.target).

To make remote-cryptsetup-pre.target really work, those services should be
ordered before it too. But this would require updates to all those services,
not just changes from systemd side.

But the requirements for remote-fs-pre.target and remote-cryptset-pre.target
are fairly similar (e.g. iscsi devices can certainly be used for both), so
let's reuse remote-fs-pre.target also for remote cryptsetup units. This loses
a bit of flexibility, but does away with the requirement for various provider
services to know about remote-cryptsetup-pre.target.

Cherry-picked from: a0dd209763f9e67054ee322a2dfd52bccf345c2e
Resolves: #1477757
---
 Makefile.am                           |  3 +--
 man/crypttab.xml                      |  2 +-
 man/systemd.special.xml               | 20 ++++----------------
 src/cryptsetup/cryptsetup-generator.c |  2 +-
 units/remote-cryptsetup-pre.target    | 15 ---------------
 units/remote-cryptsetup.target        |  2 +-
 6 files changed, 8 insertions(+), 36 deletions(-)
 delete mode 100644 units/remote-cryptsetup-pre.target

diff --git a/Makefile.am b/Makefile.am
index 13c93f485e..f06bc29c25 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -4864,8 +4864,7 @@ systemgenerator_PROGRAMS += \
 dist_systemunit_DATA += \
 	units/cryptsetup.target \
 	units/cryptsetup-pre.target \
-	units/remote-cryptsetup.target \
-	units/remote-cryptsetup-pre.target
+	units/remote-cryptsetup.target
 
 systemd_cryptsetup_SOURCES = \
 	src/cryptsetup/cryptsetup.c
diff --git a/man/crypttab.xml b/man/crypttab.xml
index 7085a16234..a9197ab40e 100644
--- a/man/crypttab.xml
+++ b/man/crypttab.xml
@@ -196,7 +196,7 @@
         started after the network is available, similarly to
         <citerefentry><refentrytitle>systemd.mount</refentrytitle><manvolnum>5</manvolnum></citerefentry>
         units marked with <option>_netdev</option>. The service unit to set up this device
-        will be ordered between <filename>remote-cryptsetup-pre.target</filename> and
+        will be ordered between <filename>remote-fs-pre.target</filename> and
         <filename>remote-cryptsetup.target</filename>, instead of
         <filename>cryptsetup-pre.target</filename> and
         <filename>cryptsetup.target</filename>.</para></listitem>
diff --git a/man/systemd.special.xml b/man/systemd.special.xml
index 5529d3bf7e..e04f08bd37 100644
--- a/man/systemd.special.xml
+++ b/man/systemd.special.xml
@@ -81,7 +81,6 @@
     <filename>poweroff.target</filename>,
     <filename>printer.target</filename>,
     <filename>reboot.target</filename>,
-    <filename>remote-cryptsetup-pre.target</filename>,
     <filename>remote-cryptsetup.target</filename>,
     <filename>remote-fs.target</filename>,
     <filename>remote-fs-pre.target</filename>,
@@ -406,18 +405,6 @@
           this target unit, for compatibility with SysV.</para>
         </listitem>
       </varlistentry>
-      <varlistentry>
-        <term><filename>remote-cryptsetup-pre.target</filename></term>
-        <listitem>
-          <para>This target unit is automatically ordered before all cryptsetup devices
-          marked with the <option>_netdev</option>. It can be used to execute additional
-          units before such devices are set up.</para>
-
-          <para>It is ordered after <filename>network.target</filename> and
-          <filename>network-online.target</filename>, and also pulls the latter in as a
-          <varname>Wants=</varname> dependency.</para>
-        </listitem>
-      </varlistentry>
       <varlistentry>
         <term><filename>remote-cryptsetup.target</filename></term>
         <listitem>
@@ -768,9 +755,10 @@
         <term><filename>remote-fs-pre.target</filename></term>
         <listitem>
           <para>This target unit is automatically ordered before all
-          remote mount point units (see above). It can be used to run
-          certain units before the remote mounts are established. Note
-          that this unit is generally not part of the initial
+          mount point units (see above) and cryptsetup devices
+          marked with the <option>_netdev</option>. It can be used to run
+          certain units before remote encrypted devices and mounts are established.
+          Note that this unit is generally not part of the initial
           transaction, unless the unit that wants to be ordered before
           all remote mounts pulls it in via a
           <varname>Wants=</varname> type dependency. If the unit wants
diff --git a/src/cryptsetup/cryptsetup-generator.c b/src/cryptsetup/cryptsetup-generator.c
index 49dc8f14b4..82a280d865 100644
--- a/src/cryptsetup/cryptsetup-generator.c
+++ b/src/cryptsetup/cryptsetup-generator.c
@@ -114,7 +114,7 @@ static int create_disk(
                 "IgnoreOnIsolate=true\n"
                 "After=systemd-readahead-collect.service systemd-readahead-replay.service\n"
                 "After=%s\n",
-                netdev ? "remote-cryptsetup-pre.target" : "cryptsetup-pre.target");
+                netdev ? "remote-fs-pre.target" : "cryptsetup-pre.target");
 
         if (!nofail)
                 fprintf(f,
diff --git a/units/remote-cryptsetup-pre.target b/units/remote-cryptsetup-pre.target
deleted file mode 100644
index a375e61889..0000000000
--- a/units/remote-cryptsetup-pre.target
+++ /dev/null
@@ -1,15 +0,0 @@
-#  This file is part of systemd.
-#
-#  systemd is free software; you can redistribute it and/or modify it
-#  under the terms of the GNU Lesser General Public License as published by
-#  the Free Software Foundation; either version 2.1 of the License, or
-#  (at your option) any later version.
-
-[Unit]
-Description=Remote Encrypted Volumes (Pre)
-Documentation=man:systemd.special(7)
-RefuseManualStart=yes
-Before=remote-cryptsetup.target
-
-After=network.target network-online.target
-Wants=network-online.target
diff --git a/units/remote-cryptsetup.target b/units/remote-cryptsetup.target
index c306d521f7..d485b06726 100644
--- a/units/remote-cryptsetup.target
+++ b/units/remote-cryptsetup.target
@@ -8,7 +8,7 @@
 [Unit]
 Description=Remote Encrypted Volumes
 Documentation=man:systemd.special(7)
-After=remote-cryptsetup-pre.target
+After=remote-fs-pre.target
 DefaultDependencies=no
 Conflicts=shutdown.target