systemd: Start ctrl-alt-del.target irreversibly

This fixes hangs during EC2 reboots (which are implemented by sending
a ctrl-alt-del to the instance).

pkgs/os-specific/linux/systemd/0001-Make-systemctl-daemon-reexec-do-the-right-thing-on-N.patch

@@ -1,7 +1,7 @@
 From 8f861550827e750fb56954c3f91a2f565abb42bb Mon Sep 17 00:00:00 2001
 From: Eelco Dolstra <eelco.dolstra@logicblox.com>
 Date: Tue, 8 Jan 2013 15:44:33 +0100
-Subject: [PATCH 1/8] Make "systemctl daemon-reexec" do the right thing on
+Subject: [PATCH 1/9] Make "systemctl daemon-reexec" do the right thing on
  NixOS
 
 ---

pkgs/os-specific/linux/systemd/0002-Ignore-duplicate-paths-in-systemctl-start.patch

@@ -1,7 +1,7 @@
 From 2afcee0b4da066fb5f8fc00b749d88f5bd9df3d3 Mon Sep 17 00:00:00 2001
 From: Eelco Dolstra <eelco.dolstra@logicblox.com>
 Date: Tue, 8 Jan 2013 15:45:01 +0100
-Subject: [PATCH 2/8] Ignore duplicate paths in "systemctl start"
+Subject: [PATCH 2/9] Ignore duplicate paths in "systemctl start"
 
 ---
  src/systemctl/systemctl.c | 2 +-

pkgs/os-specific/linux/systemd/0003-Start-device-units-for-uninitialised-encrypted-devic.patch

@@ -1,7 +1,7 @@
 From b288ca7d376e3a78368a2b59529ebe5ba812babf Mon Sep 17 00:00:00 2001
 From: Eelco Dolstra <eelco.dolstra@logicblox.com>
 Date: Tue, 8 Jan 2013 15:46:30 +0100
-Subject: [PATCH 3/8] Start device units for uninitialised encrypted devices
+Subject: [PATCH 3/9] Start device units for uninitialised encrypted devices
 
 This is necessary because the NixOS service that initialises the
 filesystem depends on the appearance of the device unit.  Also, this

pkgs/os-specific/linux/systemd/0004-Set-switch-to-configuration-hints-for-some-units.patch

@@ -1,7 +1,7 @@
 From 7a498e661f3d111fa09700a6cfa62cfd6733b1cc Mon Sep 17 00:00:00 2001
 From: Eelco Dolstra <eelco.dolstra@logicblox.com>
 Date: Tue, 8 Jan 2013 15:48:19 +0100
-Subject: [PATCH 4/8] Set switch-to-configuration hints for some units
+Subject: [PATCH 4/9] Set switch-to-configuration hints for some units
 MIME-Version: 1.0
 Content-Type: text/plain; charset=UTF-8
 Content-Transfer-Encoding: 8bit

pkgs/os-specific/linux/systemd/0005-sysinit.target-Drop-the-dependency-on-local-fs.targe.patch

@@ -1,7 +1,7 @@
 From e6bbe5fa858bd8196c8e1f264904679e6bda426d Mon Sep 17 00:00:00 2001
 From: Eelco Dolstra <eelco.dolstra@logicblox.com>
 Date: Tue, 8 Jan 2013 15:56:03 +0100
-Subject: [PATCH 5/8] sysinit.target: Drop the dependency on local-fs.target
+Subject: [PATCH 5/9] sysinit.target: Drop the dependency on local-fs.target
  and swap.target
 
 Having all services with DefaultDependencies=yes depend on

pkgs/os-specific/linux/systemd/0006-Don-t-call-plymouth-quit.patch

@@ -1,7 +1,7 @@
 From 4731a9074538e9e24d2b81fc737917b064e194e6 Mon Sep 17 00:00:00 2001
 From: Eelco Dolstra <eelco.dolstra@logicblox.com>
 Date: Tue, 8 Jan 2013 18:36:28 +0100
-Subject: [PATCH 6/8] Don't call "plymouth quit"
+Subject: [PATCH 6/9] Don't call "plymouth quit"
 
 NixOS doesn't use Plymouth (yet).
 ---

pkgs/os-specific/linux/systemd/0007-Ignore-IPv6-link-local-addresses.patch

@@ -1,7 +1,7 @@
 From f0c362873860526579bf9bda216005fd5a0936dd Mon Sep 17 00:00:00 2001
 From: Eelco Dolstra <eelco.dolstra@logicblox.com>
 Date: Mon, 4 Feb 2013 12:41:14 +0100
-Subject: [PATCH 7/8] Ignore IPv6 link-local addresses
+Subject: [PATCH 7/9] Ignore IPv6 link-local addresses
 
 Returning IPv6 link-local addresses is a bad idea, because they only
 work if an application connects specifically over the corresponding

pkgs/os-specific/linux/systemd/0008-Don-t-try-to-unmount-nix-or-nix-store.patch

@@ -1,7 +1,7 @@
 From 0112df74e576dd683c132ec33861b7099dc94454 Mon Sep 17 00:00:00 2001
 From: Eelco Dolstra <eelco.dolstra@logicblox.com>
 Date: Fri, 12 Apr 2013 13:16:57 +0200
-Subject: [PATCH 8/8] Don't try to unmount /nix or /nix/store
+Subject: [PATCH 8/9] Don't try to unmount /nix or /nix/store
 
 They'll still be remounted read-only.
 

pkgs/os-specific/linux/systemd/0009-Start-ctrl-alt-del.target-irreversibly.patch

@@ -0,0 +1,27 @@
+From ed7c22c76e1399861ec8e0216f08a7f9419eea50 Mon Sep 17 00:00:00 2001
+From: Eelco Dolstra <eelco.dolstra@logicblox.com>
+Date: Tue, 7 May 2013 14:03:13 +0200
+Subject: [PATCH 9/9] Start ctrl-alt-del.target irreversibly
+
+This makes ctrl-alt-del reboots more robust, just like "systemctl
+reboot".
+---
+ src/core/manager.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/src/core/manager.c b/src/core/manager.c
+index c7f8f20..0508628 100644
+--- a/src/core/manager.c
++++ b/src/core/manager.c
+@@ -1372,7 +1372,7 @@ static int manager_process_signal_fd(Manager *m) {
+ 
+                 case SIGINT:
+                         if (m->running_as == SYSTEMD_SYSTEM) {
+-                                manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE);
++                                manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
+                                 break;
+                         }
+ 
+-- 
+1.8.2.1
+

pkgs/os-specific/linux/systemd/default.nix

@@ -22,6 +22,7 @@ stdenv.mkDerivation rec {
       ./0006-Don-t-call-plymouth-quit.patch
       ./0007-Ignore-IPv6-link-local-addresses.patch
       ./0008-Don-t-try-to-unmount-nix-or-nix-store.patch
+      ./0009-Start-ctrl-alt-del.target-irreversibly.patch
     ] ++ stdenv.lib.optional stdenv.isArm ./libc-bug-accept4-arm.patch;
 
   buildInputs =