From 803204e6cb2e5ca17edea2f396796577d55444bb Mon Sep 17 00:00:00 2001
From: Ray Strode <rstrode@redhat.com>
Date: Fri, 28 Aug 2009 20:00:08 -0400
Subject: [PATCH] [scripts] add plymouth-generate-initrd script

One useful way to use plymouth is by installing it into
an auxillary initrd image, that overlays the primary one.

This allows plymouth and its current theme to get updated
indepedently of the kernel and the rest of the initrd
stuff.

plymouth-generate-initrd creates an initrd named:

     initrd-plymouth.img

in /boot that is suitable for use a second initrd on
the initrd line in grub.conf.
---
 scripts/Makefile.am              |  3 ++-
 scripts/plymouth-generate-initrd | 24 ++++++++++++++++++++++++
 2 files changed, 26 insertions(+), 1 deletion(-)
 create mode 100755 scripts/plymouth-generate-initrd

diff --git a/scripts/Makefile.am b/scripts/Makefile.am
index 714bd03b..3de5046f 100644
--- a/scripts/Makefile.am
+++ b/scripts/Makefile.am
@@ -1,7 +1,7 @@
 noinst_SCRIPTS = new-object.sh 
 
 initrdscriptdir = $(libexecdir)/plymouth
-initrdscript_SCRIPTS = plymouth-update-initrd plymouth-populate-initrd
+initrdscript_SCRIPTS = plymouth-update-initrd plymouth-generate-initrd plymouth-populate-initrd
 
 sbinscriptsdir = $(sbindir)
 sbinscripts_SCRIPTS = plymouth-set-default-theme
@@ -20,6 +20,7 @@ plymouth-set-default-theme: $(srcdir)/plymouth-set-default-theme.in
 	    $(srcdir)/plymouth-set-default-theme.in > plymouth-set-default-theme
 
 EXTRA_DIST= plymouth-update-initrd                                             \
+	    plymouth-generate-initrd                                           \
 	    plymouth-populate-initrd.in                                        \
 	    plymouth-set-default-theme.in                                     \
 	    $(noinst_SCRIPTS)                                                  \
diff --git a/scripts/plymouth-generate-initrd b/scripts/plymouth-generate-initrd
new file mode 100755
index 00000000..1a2ca831
--- /dev/null
+++ b/scripts/plymouth-generate-initrd
@@ -0,0 +1,24 @@
+#!/bin/bash
+
+[ -z "$DESTDIR" ] || exit 0
+
+[ -z "$PLYMOUTH_LIBEXECDIR" ] && PLYMOUTH_LIBEXECDIR="/usr/libexec"
+[ -z "$PLYMOUTH_DATADIR" ] && PLYMOUTH_DATADIR="/usr/share"
+[ -z "$PLYMOUTH_POPULATE_INITRD" ] && PLYMOUTH_POPULATE_INITRD="$PLYMOUTH_LIBEXECDIR/plymouth/plymouth-populate-initrd"
+[ -z "$PLYMOUTH_DESTDIR" ] && PLYMOUTH_DESTDIR="/boot"
+[ -z "$PLYMOUTH_IMAGE_FILE" ] && PLYMOUTH_IMAGE_FILE="$PLYMOUTH_DESTDIR/initrd-plymouth.img"
+
+PLYMOUTH_INITRD_DIR="$(mktemp --tmpdir -d plymouth-XXXXXXX)"
+
+$PLYMOUTH_POPULATE_INITRD -t "$PLYMOUTH_INITRD_DIR"
+
+if [ $? -eq 0 ]; then
+    (cd $PLYMOUTH_INITRD_DIR;
+        # FIXME: might make sense to add a flag to plymouth-populate-initrd to
+        #        skip these from the start
+        rm -f lib*/{ld*,libc*,libdl*,libm*,libz*,libpthread*}
+        find | cpio -Hnewc -o | gzip -9 > $PLYMOUTH_IMAGE_FILE
+    )
+fi
+
+rm -rf $PLYMOUTH_INITRD_DIR