[SCM] debian-live/live-initramfs branch, master, updated. 1.128.1-1-4-gfa39f4a

[Chris Lamb]

The following commit has been merged in the master branch:
commit b60b0ccf1f409d37cb427948a54c79123f0c45d9
Author: Chris Lamb <chris at chris-lamb.co.uk>
Date:   Tue Apr 15 18:59:26 2008 +0100

    Use triggers when calling update-initramfs in postinst and postrm
    
    One complication with the interaction between live-initramfs and
    update-initramfs is completeness - in a normal Debian system, we do not
    mind that not all the initrds are updated, so one would simply call
    "update-initramfs -u" when upgrading (for example) mdadm.
    
    However, live-initramfs needs to update *all* initrds (ie. '-u -k all'),
    but calling this would not use the trigger functionality as
    'update-initramfs' will only accept triggering with a single '-u' argument.
    This is sensible behaviour, as the trigger callback cannot (and shouldn't)
    be parameterised. The result is this is that we must detect how many kernel
    flavours we have and revert to the non-triggered call ('-u -k all') if we
    have more than one.
    
    My tests show that this is behaviour is sound, even in the slightly
    contrived example of updating live-initramfs whilst installing a second
    kernel, regardless of the interleaving of the calls to postinst.
    
    We additionally attempt the same logic in the postrm so that upgrading
    live-initramfs (for example, in chroot_local-packages) does not result in
    two calls expensive calls in update-initramfs.
    
    Signed-off-by: Chris Lamb <chris at chris-lamb.co.uk>

diff --git a/debian/postinst b/debian/postinst
index 752b161..805eb0a 100644
--- a/debian/postinst
+++ b/debian/postinst
@@ -1,8 +1,24 @@
 #!/bin/sh
 
-if [ -x /usr/sbin/update-initramfs ]
+case "$(ls -l /boot/vmlinuz* | wc -l)" in
+	1)
+		# We only have one kernel installed, so we can use "-u"
+		# which will use dpkg-trigger inside update-initramfs
+		INITRAMFS_ARGS="-u"
+		;;
+	*)
+		INITRAMFS_ARGS="-u -k all"
+		;;
+esac
+
+if [ -x /usr/sbin/update-initramfs ] && [ "x$1" != "xtriggered" ] && \
+   dpkg --compare-versions "$DPKG_RUNNING_VERSION" ge '1.14.18'
 then
-	update-initramfs -k all -u
+	# this activates the trigger, if triggers are working
+	update-initramfs ${INITRAMFS_ARGS}
+else
+	# force it to actually happen
+	DPKG_MAINTSCRIPT_PACKAGE='' update-initramfs ${INITRAMFS_ARGS}
 fi
 
 #DEBHELPER#
diff --git a/debian/postrm b/debian/postrm
index 752b161..805eb0a 100644
--- a/debian/postrm
+++ b/debian/postrm
@@ -1,8 +1,24 @@
 #!/bin/sh
 
-if [ -x /usr/sbin/update-initramfs ]
+case "$(ls -l /boot/vmlinuz* | wc -l)" in
+	1)
+		# We only have one kernel installed, so we can use "-u"
+		# which will use dpkg-trigger inside update-initramfs
+		INITRAMFS_ARGS="-u"
+		;;
+	*)
+		INITRAMFS_ARGS="-u -k all"
+		;;
+esac
+
+if [ -x /usr/sbin/update-initramfs ] && [ "x$1" != "xtriggered" ] && \
+   dpkg --compare-versions "$DPKG_RUNNING_VERSION" ge '1.14.18'
 then
-	update-initramfs -k all -u
+	# this activates the trigger, if triggers are working
+	update-initramfs ${INITRAMFS_ARGS}
+else
+	# force it to actually happen
+	DPKG_MAINTSCRIPT_PACKAGE='' update-initramfs ${INITRAMFS_ARGS}
 fi
 
 #DEBHELPER#
diff --git a/debian/triggers b/debian/triggers
new file mode 100644
index 0000000..6c9f454
--- /dev/null
+++ b/debian/triggers
@@ -0,0 +1 @@
+activate update-initramfs

-- 
debian-live/live-initramfs