current state: udev disk detection still not done!

also improved module structure and code commentary

1 files changed, 98 insertions, 0 deletions

diff --git a/testModule/scripts/prepare-disks b/testModule/scripts/prepare-disks
new file mode 100755
index 00000000..28113cc7
--- /dev/null
+++ b/testModule/scripts/prepare-disks
@@ -0,0 +1,98 @@
+#!/bin/bash
+###############################################################################
+# GLOBALS
+#
+
+declare -rg FLAG="/tmp/openslx.disks"
+declare -rg OPENSLX_SYS_MOUNT="/opt/openslx/system"
+
+#
+# END GLOBALS
+###############################################################################
+
+###############################################################################
+# FUNCTION DEFINITIONS
+#
+# helper to mount the OPENSLX_SYS partition to /opt/openslx/system
+# Usage: mount_sys_part <path_to_sys_partition>
+mount_sys_part() {
+	if [ ! -b "$1" ]; then
+		warn "'$1' is not a block device?"
+		echo "!block: $1" >> /tmp/openslx.disks.log
+		return 1
+	fi
+
+	local OPENSLX_SYS_DEVICE="$1"
+	mkdir -p ${OPENSLX_SYS_MOUNT}
+	if ! mount -t auto "${OPENSLX_SYS_DEVICE}" "${OPENSLX_SYS_MOUNT}"; then
+		warn "Mounting '${OPENSLX_SYS_DEVICE}' to '${OPENSLX_SYS_MOUNT}' failed."
+		echo "mount phail" >> /tmp/openslx.disks.log
+		return 1
+	fi
+	echo "ZOMG" >> /tmp/openslx.disks.log
+	return 0
+
+}
+#
+# END FUNCTION DEFINITIONS
+###############################################################################
+
+###############################################################################
+# MAIN CODE
+#
+
+command -v warn >/dev/null || . /lib/dracut-lib.sh
+
+# let check the arguments
+if [ "$#" -ne 2 ]; then
+	warn "'$0' need 2 arguments: '$0 [OPENSLX_SYS|OPENSLX_TMP] <dev_path>'"
+	echo "Not enough args!" >> /tmp/openslx.disks.log
+	exit 1
+fi
+# $1 sane?
+if [ "x$1" != "xOPENSLX_SYS" ] && [ "x$1" != "xOPENSLX_TMP" ]; then
+	warn "First arg needs to be either 'OPENSLX_SYS' or 'OPENSLX_TMP'."
+	warn "Given: $1"
+	echo "OPENSLX? $1" >> /tmp/openslx.disks.log
+	exit 1
+fi
+# $2 sane?
+if [ ! -b "/dev/$2" ]; then
+	warn "Second arg appears not to be a block device!"
+	echo "block? $2" >> /tmp/openslx.disks.log
+	exit 1
+fi
+
+# ok all seems well
+PART_TYPE="$1"
+PART_DEV="/dev/$2"
+
+# lets check if we are already running
+INSTANCES="$(grep "$PART_TYPE" "$FLAG" | busybox wc -l)"
+if [ "$INSTANCES" -ge 1 ]; then
+	# uhoh we are not alone!
+	warn "'$0' already running for $PART_TYPE ... ignoring."
+	echo "already running for $PART_TYPE" >> /tmp/openslx.disks.log
+	exit 1
+fi
+
+# now comes the funny part. We write our pid to $FLAG in order to make sure
+# we are the only instance of this script running.
+echo "$PART_TYPE.$$" >> "$FLAG"
+
+# if we are still here, then we can go on and process the partition
+echo "Processing: $PART_TYPE -> $PART_DEV" >> /tmp/openslx.disks.log
+
+if [ "$PART_TYPE" = "OPENSLX_TMP" ]; then
+	# mark it for later mounting!
+	echo "$PART_DEV" > /tmp/openslx.disk.tmp
+	exit 0
+fi
+if [ "$PART_TYPE" = "OPENSLX_SYS" ]; then
+	# mount it now, since qemu-nbd needs it asap!
+	exit $(mount_sys_part "$PART_DEV")
+fi
+
+#
+# END MAIN CODE
+###############################################################################