5 files changed, 219 insertions, 0 deletions
diff --git a/.SRCINFO b/.SRCINFO
new file mode 100644
index 000000000000..1b69106cb9b6
--- /dev/null
+++ b/.SRCINFO
@@ -0,0 +1,20 @@
+pkgbase = device-mapper-openrc
+	pkgdesc = OpenRC device-mapper init script
+	pkgver = 20210106
+	pkgrel = 1
+	arch = any
+	license = GPL2
+	depends = device-mapper
+	depends = openrc
+	provides = init-device-mapper
+	conflicts = init-device-mapper
+	backup = etc/conf.d/device-mapper
+	source = device-mapper.confd
+	source = device-mapper.initd
+	source = dmeventd.initd
+	sha256sums = 57777904f12a35617e5a4193c964ebb32396452487fd02353e71e16e7b46bc22
+	sha256sums = 630fbe07721c2a264c1b2f0195caf658c591bdef13cb82d5605bb489f59971a4
+	sha256sums = b4b91555f1486754717073dae83715d1e03adfdd5e56d80be8ac9689a85bc717
+
+pkgname = device-mapper-openrc
+
diff --git a/PKGBUILD b/PKGBUILD
new file mode 100644
index 000000000000..3a5551961b22
--- /dev/null
+++ b/PKGBUILD
@@ -0,0 +1,27 @@
+# Maintainer: m00n <lmarianski@protonmail.com>
+# Contributor: artoo <artoo@artixlinux.org>
+
+pkgname=device-mapper-openrc
+pkgver=20210106
+pkgrel=1
+pkgdesc="OpenRC device-mapper init script"
+arch=('any')
+license=('GPL2')
+provides=('init-device-mapper')
+depends=('device-mapper' 'openrc')
+conflicts=('init-device-mapper')
+backup=('etc/conf.d/device-mapper')
+source=("device-mapper.confd"
+        "device-mapper.initd"
+        "dmeventd.initd")
+sha256sums=('57777904f12a35617e5a4193c964ebb32396452487fd02353e71e16e7b46bc22'
+            '630fbe07721c2a264c1b2f0195caf658c591bdef13cb82d5605bb489f59971a4'
+            'b4b91555f1486754717073dae83715d1e03adfdd5e56d80be8ac9689a85bc717')
+
+package() {
+    install -Dm755 "${srcdir}"/device-mapper.confd "${pkgdir}"/etc/openrc/conf.d/device-mapper
+
+    for f in device-mapper dmeventd; do
+        install -Dm755 "${srcdir}"/"$f".initd "${pkgdir}"/etc/openrc/init.d/"$f"
+    done
+}
diff --git a/device-mapper.confd b/device-mapper.confd
new file mode 100644
index 000000000000..bc7a25158635
--- /dev/null
+++ b/device-mapper.confd
@@ -0,0 +1 @@
+RC_AFTER="lvm"
diff --git a/device-mapper.initd b/device-mapper.initd
new file mode 100644
index 000000000000..dd4ec76e4496
--- /dev/null
+++ b/device-mapper.initd
@@ -0,0 +1,146 @@
+#!/usr/bin/openrc-run
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+depend() {
+	# As of .67-r1, we call ALL lvm start/stop scripts with --sysinit, that
+	# means dmeventd is NOT notified, as it cannot be safely running
+	before dmeventd checkfs fsck
+	after modules
+}
+
+dm_in_proc() {
+	local retval=0
+	for x in devices misc ; do
+		grep -qs 'device-mapper' /proc/${x}
+		retval=$((${retval} + $?))
+	done
+	return ${retval}
+}
+
+# char **build_dmsetup_command(volume)
+#
+# Returns complete dmsetup command given single volume name
+build_dmsetup_command() {
+	local count dmsetup_cmd
+
+	# Number of lines mentioning volume name
+	count=$(grep -v -e '^[[:space:]]*\(#\|$\)' /etc/dmtab | grep -c ${1})
+
+	# If there's just one line:
+	if [ ${count} -eq 1 ] ; then
+		echo "echo $(grep -v -e '^[[:space:]]*\(#\|$\)' /etc/dmtab | \
+			  grep ${1} | awk '{$1=""; print $0}') | /usr/bin/dmsetup create ${1}"
+
+	# For all cases with more lines:
+	elif [ ${count} -gt 1 ] ; then
+		for c in $( seq 1 ${count} ) ; do
+			if [ ${c} -eq 1 ] ; then
+				# Heavy escaping in awk-statement because we cannot use apostrophes
+				dmsetup_cmd="echo -e $(grep -v -e '^[[:space:]]*\(#\|$\)' /etc/dmtab | \
+							 grep ${1} | awk NR==${c}\ \{\$1=\"\"\;\ print\ \$0\})"
+			else
+				# Append starting with newline
+				dmsetup_cmd="${dmsetup_cmd}\\\\n \
+							 $(grep -v -e '^[[:space:]]*\(#\|$\)' /etc/dmtab | \
+							 grep ${1} | awk NR==${c}\ \{\$1=\"\"\;\ print\ \$0\})"
+			fi
+		done
+		echo "${dmsetup_cmd} | /usr/bin/dmsetup create ${1}"
+	fi
+
+	return 0
+}
+
+# char **get_new_dm_volumes(void)
+#
+#   Return unique volumes from /etc/dmtab
+get_new_dm_volumes() {
+	local volume
+
+	# Filter comments and blank lines
+	grep -v -e '^[[:space:]]*\(#\|$\)' /etc/dmtab | \
+	awk '{ print $1 }' | \
+	uniq | \
+	while read volume ; do
+		# If it exists, skip it
+		dmvolume_exists "${volume%:}" && continue
+
+		echo "${volume%:}"
+	done
+
+	return 0
+}
+
+# int dmvolume_exists(volume)
+#
+#   Return true if volume exists in DM table
+dmvolume_exists() {
+	local x line volume=$1
+
+	[ -z "${volume}" ] && return 1
+
+	/usr/bin/dmsetup ls 2>/dev/null | \
+	while read line ; do
+		for x in ${line} ; do
+			# the following conditonal return only breaks out
+			# of the while loop, as it is running in a pipe.
+			[ "${x}" = "${volume}" ] && return 1
+			# We only want to check the volume name
+			break
+		done
+	done
+
+	# if 1 was returned from the above loop, then indicate that
+	# volume exists
+	[ $? = 1 ] && return 0
+
+	# otherwise the loop exited normally and the volume does not
+	# exist
+	return 1
+}
+
+# int is_empty_dm_volume(volume)
+#
+#   Return true if the volume exists in DM table, but is empty/non-valid
+is_empty_dm_volume() {
+	local table volume=$1
+
+	set -- $(/usr/bin/dmsetup table 2>/dev/null | grep -e "^${volume}:")
+	[ "${volume}" = "$1" -a -z "$2" ]
+}
+
+
+start() {
+	if [ -e /proc/modules ] && ! dm_in_proc ; then
+		modprobe dm-mod 2>/dev/null
+	fi
+	# Ensure the dirs exist for locking and running
+	checkpath -q -d -m 0700 -o root:root /run/lvm /run/lock/lvm
+
+	local x volume
+
+	if [ -x /usr/bin/dmsetup -a -c /dev/mapper/control -a -f /etc/dmtab ] ; then
+		[ -n "$(get_new_dm_volumes)" ] && \
+			einfo " Setting up device-mapper volumes:"
+
+		get_new_dm_volumes | \
+		while read x ; do
+			[ -n "${x}" ] || continue
+
+			volume="${x##* }"
+
+			ebegin "  Creating volume: ${volume}"
+			if ! eval $(build_dmsetup_command ${volume}) >/dev/null 2>/dev/null ; then
+				eend 1 "  Error creating volume: ${volume}"
+				# dmsetup still adds an empty volume in some cases,
+				#  so lets remove it
+				is_empty_dm_volume "${volume}" && \
+					/usr/bin/dmsetup remove "${volume}" 2>/dev/null
+			else
+				eend 0
+			fi
+		done
+	fi
+}
+
diff --git a/dmeventd.initd b/dmeventd.initd
new file mode 100644
index 000000000000..746470418a6f
--- /dev/null
+++ b/dmeventd.initd
@@ -0,0 +1,25 @@
+#!/usr/bin/openrc-run
+# Copyright 1999-2016 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+PIDFILE=/run/dmeventd.pid
+BIN=/usr/bin/dmeventd
+
+depend() {
+	# As of .67-r1, we call ALL lvm start/stop scripts with --sysinit, that
+	# means dmeventd is NOT notified, as it cannot be safely running
+	after lvm device-mapper
+}
+
+start() {
+	ebegin "Starting dmeventd"
+	start-stop-daemon --start --exec $BIN --pidfile $PIDFILE
+	eend $?
+}
+
+stop() {
+	ebegin "Stopping dmeventd"
+	start-stop-daemon --stop --exec $BIN --pidfile $PIDFILE
+	eend $?
+}
+