106 lines
3.9 KiB
Diff
106 lines
3.9 KiB
Diff
From 2e7257a2e3bf91c11e8cc56f609b288403f9be14 Mon Sep 17 00:00:00 2001
|
|
From: Dave Young <dyoung@redhat.com>
|
|
Date: Thu, 19 Apr 2012 12:01:36 +0800
|
|
Subject: [PATCH] add pre-pivot-cleanup hook
|
|
|
|
Sometimes some hook script will need to be before the cleanup hook scripts
|
|
For example dhclient killing, nfs cleanup, etc. must not happen before kdump
|
|
because it will use their fuctionalities.
|
|
|
|
So here introduce a new hook pre-pivot-cleanup, all cleanup scripts will go there.
|
|
that means pre-pivot hook is splited to two hooks pre-pivot and pre-pivot-cleanup
|
|
|
|
Signed-off-by: Dave Young <dyoung@redhat.com>
|
|
---
|
|
README.modules | 3 +++
|
|
dracut-functions.sh | 2 +-
|
|
dracut.asc | 7 ++++++-
|
|
dracut.cmdline.7.asc | 2 +-
|
|
modules.d/99base/init.sh | 7 ++++++-
|
|
5 Dateien geändert, 17 Zeilen hinzugefügt(+), 4 Zeilen entfernt(-)
|
|
|
|
diff --git a/README.modules b/README.modules
|
|
index 21461de..188d011 100644
|
|
--- a/README.modules
|
|
+++ b/README.modules
|
|
@@ -103,6 +103,9 @@ init has the following hook points to inject scripts:
|
|
a timeout.
|
|
|
|
/lib/dracut/hooks/pre-pivot/*.sh
|
|
+ scripts to run before latter initramfs cleanups
|
|
+
|
|
+/lib/dracut/hooks/pre-pivot-cleanup/*.sh
|
|
scripts to run before the real init is executed and the initramfs
|
|
disappears
|
|
All processes started before should be killed here.
|
|
diff --git a/dracut-functions.sh b/dracut-functions.sh
|
|
index f5611dc..ccf3ba6 100755
|
|
--- a/dracut-functions.sh
|
|
+++ b/dracut-functions.sh
|
|
@@ -36,7 +36,7 @@ fi
|
|
[[ $hookdirs ]] || {
|
|
hookdirs="cmdline pre-udev pre-trigger netroot "
|
|
hookdirs+="initqueue initqueue/settled initqueue/online initqueue/finished initqueue/timeout "
|
|
- hookdirs+="pre-mount pre-pivot mount "
|
|
+ hookdirs+="pre-mount pre-pivot pre-pivot-cleanup mount "
|
|
hookdirs+="emergency shutdown-emergency shutdown cleanup "
|
|
export hookdirs
|
|
}
|
|
diff --git a/dracut.asc b/dracut.asc
|
|
index 1a0e3d2..9621db2 100644
|
|
--- a/dracut.asc
|
|
+++ b/dracut.asc
|
|
@@ -854,12 +854,17 @@ This hook is mainly to mount the real root device.
|
|
|
|
=== Hook: pre-pivot
|
|
|
|
+This hook is called before pre-pivot-cleanup hook, This is a good place for
|
|
+actions other than cleanups which need to be called before pivot.
|
|
+
|
|
+
|
|
+=== Hook: pre-pivot-cleanup
|
|
+
|
|
This hook is the last hook and is called before init finally switches root to
|
|
the real root device. This is a good place to clean up and kill processes not
|
|
needed anymore.
|
|
|
|
|
|
-
|
|
=== Cleanup and switch_root
|
|
|
|
Init kills all udev processes, cleans up the environment, sets up the arguments
|
|
diff --git a/dracut.cmdline.7.asc b/dracut.cmdline.7.asc
|
|
index c77fee5..76db651 100644
|
|
--- a/dracut.cmdline.7.asc
|
|
+++ b/dracut.cmdline.7.asc
|
|
@@ -105,7 +105,7 @@ Debug
|
|
**rd.break**::
|
|
drop to a shell at the end
|
|
|
|
-**rd.break=**_{cmdline|pre-udev|pre-trigger|initqueue|pre-mount|mount|pre-pivot}_::
|
|
+**rd.break=**_{cmdline|pre-udev|pre-trigger|initqueue|pre-mount|mount|pre-pivot|pre-pivot-cleanup}_::
|
|
drop to a shell on defined breakpoint
|
|
|
|
**rd.udev.info**::
|
|
diff --git a/modules.d/99base/init.sh b/modules.d/99base/init.sh
|
|
index 65bc88f..88ec184 100755
|
|
--- a/modules.d/99base/init.sh
|
|
+++ b/modules.d/99base/init.sh
|
|
@@ -224,10 +224,15 @@ done
|
|
while read dev mp rest; do [ "$mp" = "$NEWROOT" ] && echo $dev; done < /proc/mounts
|
|
} | vinfo
|
|
|
|
-# pre pivot scripts are sourced just before we switch over to the new root.
|
|
+# pre pivot scripts are sourced just before we doing cleanup and switch over
|
|
+# to the new root.
|
|
getarg 'rd.break=pre-pivot' 'rdbreak=pre-pivot' && emergency_shell -n pre-pivot "Break pre-pivot"
|
|
source_hook pre-pivot
|
|
|
|
+# pre pivot cleanup scripts are sourced just before we switch over to the new root.
|
|
+getarg 'rd.break=pre-pivot-cleanup' 'rdbreak=pre-pivot-cleanup' && emergency_shell -n pre-pivot-cleanup "Break pre-pivot-cleanup"
|
|
+source_hook pre-pivot-cleanup
|
|
+
|
|
# By the time we get here, the root filesystem should be mounted.
|
|
# Try to find init.
|
|
for i in "$(getarg real_init=)" "$(getarg init=)" $(getargs rd.distroinit=) /sbin/init; do
|