dd-refactor: dracut + build bits

Here's where we actually modify stuff to use `driver_updates.py`:

* Parse commandline options to /tmp/dd_{net,disk,interactive,todo}
* Generate udev rules etc. in `driver-updates-genrules.sh`
* `fetch-driver-net.sh`: fetch .iso file and call driver-updates
* Modify `driver-updates@.service`:
  * Use `dmesg -n1` and `/proc/sys/kernel/printk` to hide console messages
  * Make sure we run after vconsole is set up
  * Use `plymouth --hide-splash` rather than `plymouth quit`
    (this is how dracut handles emergency shells)
* Drop `driver-updates.sh` (which ran driver-updates in `pre-trigger`)
* Drop `driver-updates-net.sh` (`driver_updates.py` handles saving repos)
* Drop old `driver-updates`
* Make necessary changes to `Makefile.am` and `module-setup.sh`
* Add `dracut/test_*.py` to `nosetests.sh`
* `anaconda-lib.sh`: Add `wait_for_dd`, remove `start_driver_update`,
                     fix `run_kickstart` for the new stuff above

Resolves: RHBZ#1084197
Resolves: RHBZ#1164131
Related: RHBZ#1213546

dracut/Makefile.am

@@ -44,9 +44,9 @@ dist_dracut_SCRIPTS = module-setup.sh \
 		      parse-anaconda-dd.sh \
 		      fetch-driver-net.sh \
 		      driver-updates@.service \
-		      driver-updates.sh \
-		      driver-updates-net.sh \
+		      driver-updates-genrules.sh \
 		      anaconda-depmod.sh \
-		      driver-updates
+		      driver_updates.py \
+		      test_driver_updates.py
 
 MAINTAINERCLEANFILES = Makefile.in

dracut/anaconda-lib.sh

@@ -216,39 +216,21 @@ run_kickstart() {
     . $hookdir/cmdline/*parse-anaconda-repo.sh
     . $hookdir/cmdline/*parse-livenet.sh
     . $hookdir/cmdline/*parse-anaconda-dd.sh
-    case "$repotype" in
-        http*|ftp|nfs*) do_net=1 ;;
-        cdrom|hd|bd)    do_disk=1 ;;
-    esac
-    [ "$root" = "anaconda-auto-cd" ] && do_disk=1
-
-    # kickstart Driver Disk Handling
-    # parse-kickstart may have added network inst.dd entries to the cmdline
-    # Or it may have written devices to /tmp/dd_ks
-
-    # Does network need to be rerun?
-    dd_args="$(getargs dd= inst.dd=)"
-    for dd in $dd_args; do
-        case "${dd%%:*}" in
-            http|https|ftp|nfs|nfs4)
-                do_net=1
-                rm /tmp/dd_net.done
-                break
-            ;;
-        esac
-    done
 
-    # Run the driver update UI for disks
-    if [ -e "/tmp/dd_args_ks" ]; then
-        # TODO: Seems like this should be a function, a mostly same version is used in 3 places
-        start_driver_update "Kickstart Driver Update Disk"
-        rm /tmp/dd_args_ks
-    fi
+    # Figure out whether we need to retry disk/net stuff
+    case "$root" in
+        anaconda-net:*)   do_net=1 ;;
+        anaconda-disk:*)  do_disk=1 ;;
+        anaconda-auto-cd) do_disk=1 ;;
+    esac
+    [ -f /tmp/dd_net ] && do_net=1
+    [ -f /tmp/dd_disk ] && do_disk=1
 
     # disk: replay udev events to trigger actions
     if [ "$do_disk" ]; then
         # set up new rules
         . $hookdir/pre-trigger/*repo-genrules.sh
+        . $hookdir/pre-trigger/*driver-updates-genrules.sh
         udevadm control --reload
         # trigger the rules for all the block devices we see
         udevadm trigger --action=change --subsystem-match=block
@@ -277,16 +259,6 @@ wait_for_updates() {
     echo "[ -e /tmp/liveupdates.done ]" > $hookdir/initqueue/finished/updates.sh
 }
 
-start_driver_update() {
-    local title="$1"
-
-    tty=$(find_tty)
-
-    # save module state
-    cat /proc/modules > /tmp/dd_modules
-
-    info "Starting $title Service on $tty"
-    systemctl start driver-updates@$tty.service
-    status=$(systemctl -p ExecMainStatus show driver-updates@$tty.service)
-    info "DD status=$status"
+wait_for_dd() {
+    echo "[ -e /tmp/dd.done ]" > $hookdir/initqueue/finished/dd.sh
 }