From 52c4c9484d0cdccad7d9a3cc684677e784edab53 Mon Sep 17 00:00:00 2001

From: Will Woods <wwoods@redhat.com>

Date: Thu, 8 Mar 2012 18:03:48 -0500

Subject: [PATCH] Add 'live.updates' to livenet module

live.updates allows you to specify the URL for an "updates image" that

should be applied to the live runtime before switch_root.

The URL can be anything supported by url-lib (http, https, ftp, possibly

nfs) and the image can be anything supported by img-lib (xz/gzip

compressed cpio/tar, uncompressed cpio/tar, filesystem image, etc.)

---

 modules.d/90livenet/fetch-liveupdate.sh |   32 +++++++++++++++++++++++++++++++

 modules.d/90livenet/module-setup.sh     |    1 +

 modules.d/90livenet/parse-livenet.sh    |   12 +++++++++++-

 3 files changed, 44 insertions(+), 1 deletion(-)

 create mode 100755 modules.d/90livenet/fetch-liveupdate.sh

diff --git a/modules.d/90livenet/fetch-liveupdate.sh b/modules.d/90livenet/fetch-liveupdate.sh

new file mode 100755

index 0000000..8a5fdec

--- /dev/null

+++ b/modules.d/90livenet/fetch-liveupdate.sh

@@ -0,0 +1,32 @@

+#!/bin/sh

+# fetch-liveupdate - fetch an update image for dmsquash-live media.

+# this gets called by the "initqueue/online" hook for each network interface

+# that comes online.

+

+# no updates requested? we're not needed.

+[ -e /tmp/liveupdates.info ] || return 0

+

+command -v getarg >/dev/null || . /lib/dracut-lib.sh

+command -v fetch_url >/dev/null || . /lib/url-lib.sh

+command -v unpack_img >/dev/null || . /lib/img-lib.sh

+

+read url < /tmp/liveupdates.info

+

+info "fetching live updates from $url"

+

+fetch_url "$url" /tmp/updates.img

+if [ $? != 0 ]; then

+    warn "failed to fetch update image!"

+    warn "url: $url"

+    return 1

+fi

+

+unpack_img /tmp/updates.img /updates.tmp.$$

+if [ $? != 0 ]; then

+    warn "failed to unpack update image!"

+    warn "url: $url"

+    return 1

+fi

+rm -rf /updates

+mv -f /updates.tmp.$$ /updates

+mv /tmp/liveupdates.info /tmp/liveupdates.done

diff --git a/modules.d/90livenet/module-setup.sh b/modules.d/90livenet/module-setup.sh

index c650ef3..2071553 100755

--- a/modules.d/90livenet/module-setup.sh

+++ b/modules.d/90livenet/module-setup.sh

@@ -12,6 +12,7 @@ depends() {

 install() {

     inst_hook cmdline 29 "$moddir/parse-livenet.sh"

+    inst_hook initqueue/online 95 "$moddir/fetch-liveupdate.sh"

     inst "$moddir/livenetroot.sh" "/sbin/livenetroot"

 }

diff --git a/modules.d/90livenet/parse-livenet.sh b/modules.d/90livenet/parse-livenet.sh

index 926dba2..3553cef 100755

--- a/modules.d/90livenet/parse-livenet.sh

+++ b/modules.d/90livenet/parse-livenet.sh

@@ -1,10 +1,20 @@

-#!/bin/bash

+#!/bin/sh

 # live net images - just like live images, but specified like:

 # root=live:[url-to-backing-file]

 [ -z "$root" ] && root=$(getarg root=)

 . /lib/url-lib.sh

+# live updates

+updates=$(getarg live.updates=)

+if [ -n "$updates" ]; then

+    # make sure network comes up even if we're doing a local live device

+    [ -z "$netroot" ] && echo "rd.neednet=1" > /etc/cmdline.d/90livenet.conf

+    echo "$updates" > /tmp/liveupdates.info

+    echo '[ -e /tmp/liveupdates.done ]' > \

+        $hookdir/initqueue/finished/liveupdates.sh

+fi

+

 str_starts "$root" "live:" && liveurl="$root"

 str_starts "$liveurl" "live:" || return

 liveurl="${liveurl#live:}"