From cd6679c71665a53e2a55a204e7ea64b4a6d14030 Mon Sep 17 00:00:00 2001

From: Harald Hoyer <harald@redhat.com>

Date: Fri, 22 Jul 2016 13:32:47 +0200

Subject: [PATCH] add rd.emergency=[reboot|poweroff|halt]

specifies what action to execute in case of a critical failure

(cherry picked from commit c45e856a659a37537c107f7ef3e680abf60a96a5)

https://bugzilla.redhat.com/show_bug.cgi?id=1359144

---

 dracut.cmdline.7.asc                    |  3 +++

 modules.d/98systemd/dracut-emergency.sh | 12 +++++++++++-

 modules.d/99base/dracut-lib.sh          | 24 ++++++++++++++++--------

 3 files changed, 30 insertions(+), 9 deletions(-)

diff --git a/dracut.cmdline.7.asc b/dracut.cmdline.7.asc

index 1cf962e..1fb4f74 100644

--- a/dracut.cmdline.7.asc

+++ b/dracut.cmdline.7.asc

@@ -108,6 +108,9 @@ resume=UUID=3f5ad593-4546-4a94-a374-bcfb68aa11f7

 Misc

 ~~~~

+**rd.emergency=**__[reboot|poweroff|halt]__::

+    specify, what action to execute in case of a critical failure.

+

 **rd.driver.blacklist=**__<drivername>__[,__<drivername>__,...]::

     do not load kernel module <drivername>. This parameter can be specified

     multiple times.

diff --git a/modules.d/98systemd/dracut-emergency.sh b/modules.d/98systemd/dracut-emergency.sh

index 5771dc5..b3e8d08 100755

--- a/modules.d/98systemd/dracut-emergency.sh

+++ b/modules.d/98systemd/dracut-emergency.sh

@@ -16,6 +16,7 @@ export _rdshell_name="dracut" action="Boot" hook="emergency"

 source_hook "$hook"

+_emergency_action=$(getarg rd.emergency)

 if getargbool 1 rd.shell -d -y rdshell || getarg rd.break -d rdbreak; then

     echo

@@ -33,9 +34,18 @@ if getargbool 1 rd.shell -d -y rdshell || getarg rd.break -d rdbreak; then

     exec sh -i -l

 else

     warn "$action has failed. To debug this issue add \"rd.shell rd.debug\" to the kernel command line."

-    exit 1

+    [ -z "$_emergency_action" ] && _emergency_action=halt

 fi

 /bin/rm -f -- /.console_lock

+case "$_emergency_action" in

+    reboot)

+        reboot || exit 1;;

+    poweroff)

+        poweroff || exit 1;;

+    halt)

+        halt || exit 1;;

+esac

+

 exit 0

diff --git a/modules.d/99base/dracut-lib.sh b/modules.d/99base/dracut-lib.sh

index 16bc74d..10d9cbc 100755

--- a/modules.d/99base/dracut-lib.sh

+++ b/modules.d/99base/dracut-lib.sh

@@ -1068,6 +1068,8 @@ emergency_shell()

     local _ctty

     set +e

     local _rdshell_name="dracut" action="Boot" hook="emergency"

+    local _emergency_action

+

     if [ "$1" = "-n" ]; then

         _rdshell_name=$2

         shift 2

@@ -1086,20 +1088,26 @@ emergency_shell()

     source_hook "$hook"

     echo

+    _emergency_action=$(getarg rd.emergency)

+    [ -z "$_emergency_action" ] \

+        && [ -e /run/initramfs/.die ] \

+        && _emergency_action=halt

+

     if getargbool 1 rd.shell -d -y rdshell || getarg rd.break -d rdbreak; then

         _emergency_shell $_rdshell_name

     else

         warn "$action has failed. To debug this issue add \"rd.shell rd.debug\" to the kernel command line."

-        # cause a kernel panic

-        exit 1

+        [ -z "$_emergency_action" ] && _emergency_action=halt

     fi

-    if [ -e /run/initramfs/.die ]; then

-        if [ -n "$DRACUT_SYSTEMD" ]; then

-            systemctl --no-block --force halt

-        fi

-        exit 1

-    fi

+    case "$_emergency_action" in

+        reboot)

+            reboot || exit 1;;

+        poweroff)

+            poweroff || exit 1;;

+        halt)

+            halt || exit 1;;

+    esac

 }

 action_on_fail()