From c9a9cf7363a2f2bdf932b5f5fded53bdcf1542b0 Mon Sep 17 00:00:00 2001
From: Harald Hoyer <harald@redhat.com>
Date: Tue, 24 Mar 2009 11:36:56 +0100
Subject: [PATCH] add module for rootfs mounting via udev rules

---
 modules.d/95rootfs-block-udev/genrules.sh     | 15 +++++++++++
 modules.d/95rootfs-block-udev/install         |  3 +++
 .../95rootfs-block-udev/parse-root-opts.sh    | 27 +++++++++++++++++++
 3 files changed, 45 insertions(+)
 create mode 100755 modules.d/95rootfs-block-udev/genrules.sh
 create mode 100755 modules.d/95rootfs-block-udev/install
 create mode 100755 modules.d/95rootfs-block-udev/parse-root-opts.sh

diff --git a/modules.d/95rootfs-block-udev/genrules.sh b/modules.d/95rootfs-block-udev/genrules.sh
new file mode 100755
index 000000000..d4e226ce3
--- /dev/null
+++ b/modules.d/95rootfs-block-udev/genrules.sh
@@ -0,0 +1,15 @@
+
+resume=$(getarg resume=) && ! getarg noresume && [ -b "$resume" ] && {
+    # parsing the output of ls is Bad, but until there is a better way...
+    (
+    	echo -e 'KERNEL=="'${resume#/dev/}'", RUN+="/bin/sh -c \047 echo %M:%m > /sys/power/resume \047 "'
+    	echo -e 'SYMLINK=="'${resume#/dev/}'", RUN+="/bin/sh -c \047 echo %M:%m > /sys/power/resume \047 "'
+    ) >> /etc/udev/rules.d/99-resume.rules
+}
+
+(
+ echo -e 'KERNEL=="'${root#/dev/}'", RUN+="/bin/sh -c \047 mount '$fstype' -o '$rflags' '$root' '$NEWROOT' \047 " '
+ echo -e 'SYMLINK=="'${root#/dev/}'", RUN+="/bin/sh -c \047 mount '$fstype' -o '$rflags' '$root' '$NEWROOT' \047 " '
+) >> /etc/udev/rules.d/99-mount.rules
+
+
diff --git a/modules.d/95rootfs-block-udev/install b/modules.d/95rootfs-block-udev/install
new file mode 100755
index 000000000..641e7df0d
--- /dev/null
+++ b/modules.d/95rootfs-block-udev/install
@@ -0,0 +1,3 @@
+#!/bin/sh
+inst_hook pre-udev 10 "$moddir/parse-root-opts.sh"
+inst_hook pre-udev 20 "$moddir/genrules.sh"
diff --git a/modules.d/95rootfs-block-udev/parse-root-opts.sh b/modules.d/95rootfs-block-udev/parse-root-opts.sh
new file mode 100755
index 000000000..473c34dc1
--- /dev/null
+++ b/modules.d/95rootfs-block-udev/parse-root-opts.sh
@@ -0,0 +1,27 @@
+#!/bin/sh
+if resume=$(getarg resume=) && ! getarg noresume; then 
+    export resume
+    echo "$resume" >/.resume
+else
+    unset resume
+fi
+
+root=$(getarg root=)
+case $root in
+    LABEL=*) root=${root#LABEL=}
+    root="$(echo $root |sed 's,/,\\x2f,g')"
+    root="/dev/disk/by-label/${root}" ;;
+    UUID=*) root="/dev/disk/by-uuid/${root#UUID=}" ;;
+    '') echo "Warning: no root specified"
+        root="/dev/sda1" ;;
+esac
+
+if rflags="$(getarg rootflags=)"; then
+    getarg rw && rflags="${rflags},rw" || rflags="${rflags},ro"
+else
+    getarg rw && rflags=rw || rflags=ro
+fi
+
+fstype="$(getarg rootfstype=)" && fstype="-t ${fstype}"
+
+export fstype rflags root
-- 
2.47.3