From d6345c3d0099a52a38262ca1bc3638994c6df069 Mon Sep 17 00:00:00 2001
From: Mikhail Chernonog <snowmix@altlinux.org>
Date: Wed, 7 Apr 2021 14:19:56 +0300
Subject: [PATCH] iscsi: Add new feature

Signed-off-by: Mikhail Chernonog <snowmix@basealt.ru>
---
 features/iscsi/README.md                      | 14 +++++++
 features/iscsi/config.mk                      | 12 ++++++
 .../iscsi/data/etc/initrd/cmdline.d/iscsi     |  9 ++++
 features/iscsi/data/etc/rc.d/init.d/iscsi     | 41 +++++++++++++++++++
 features/iscsi/rules.mk                       |  5 +++
 5 files changed, 81 insertions(+)
 create mode 100644 features/iscsi/README.md
 create mode 100644 features/iscsi/config.mk
 create mode 100644 features/iscsi/data/etc/initrd/cmdline.d/iscsi
 create mode 100755 features/iscsi/data/etc/rc.d/init.d/iscsi
 create mode 100644 features/iscsi/rules.mk

diff --git a/features/iscsi/README.md b/features/iscsi/README.md
new file mode 100644
index 00000000..b72b8c46
--- /dev/null
+++ b/features/iscsi/README.md
@@ -0,0 +1,14 @@
+# Feature: iscsi-boot
+
+Feature adds you to perform a diskless system boot using pxe and iSCSI.
+
+## Parameters
+- **ISCSI_TARGET_NAME** -- Target name iSCSI, required parameter
+- **ISCSI_TARGET_IP** -- Target IP address iSCSI, required parameter 
+- **ISCSI_TARGET_PORT** -- Target port iSCSI 
+- **ISCSI_TARGET_LUN** -- Target group tag iSCSI
+- **ISCSI_INITIATOR** -- Initiator name iSCSI
+- **ISCSI_USERNAME** -- Username for initiator authentication by the target(s)
+- **ISCSI_PASSWORD** -- Password for initiator authentication by the target(s) 
+- **ISCSI_IN_USERNAME** -- Username for target(s) authentication by the initiator
+- **ISCSI_IN_PASSWORD** -- Password for target(s) authentication by the initiator
diff --git a/features/iscsi/config.mk b/features/iscsi/config.mk
new file mode 100644
index 00000000..02f0c84b
--- /dev/null
+++ b/features/iscsi/config.mk
@@ -0,0 +1,12 @@
+ISCSI_MODULES = iscsi-ibft \
+                     iscsi-tcp \
+                     iscsi-boot-sysfs \
+                     iscsi-target-mod \
+                     target-core-mod \
+                     libiscsi \
+                     libiscsi-tcp \
+                     scsi-transport-iscsi \
+                     sd_mod \
+                     sr_mod
+
+ISCSI_DATADIR = $(FEATURESDIR)/iscsi/data
diff --git a/features/iscsi/data/etc/initrd/cmdline.d/iscsi b/features/iscsi/data/etc/initrd/cmdline.d/iscsi
new file mode 100644
index 00000000..27d0e0eb
--- /dev/null
+++ b/features/iscsi/data/etc/initrd/cmdline.d/iscsi
@@ -0,0 +1,9 @@
+register_parameter string ISCSI_TARGET_NAME
+register_parameter string ISCSI_TARGET_IP
+register_parameter number ISCSI_TARGET_PORT
+register_parameter number ISCSI_TARGET_LUN
+register_parameter string ISCSI_INITIATOR
+register_parameter string ISCSI_USERNAME
+register_parameter string ISCSI_PASSWORD
+register_parameter string ISCSI_IN_USERNAME
+register_parameter string ISCSI_IN_PASSWORD
diff --git a/features/iscsi/data/etc/rc.d/init.d/iscsi b/features/iscsi/data/etc/rc.d/init.d/iscsi
new file mode 100755
index 00000000..a4fa805b
--- /dev/null
+++ b/features/iscsi/data/etc/rc.d/init.d/iscsi
@@ -0,0 +1,41 @@
+#!/bin/bash
+### BEGIN INIT INFO
+# Provides:            iscsi
+# Required-Start:      cmdline modules network-up
+# Should-Start:
+# Required-Stop:
+# Should-Stop:
+# Default-Start:       3 4 5
+# Default-Stop:
+### END INIT INFO
+
+[ -z "${1-}" ] || [ "$1" = start ] || exit 0
+
+if [ -z "$ISCSI_TARGET_NAME" ] || [ -z "$ISCSI_TARGET_IP" ]; then
+        exit 0
+fi
+
+if [ -z "$ISCSI_INITIATOR" ]; then
+	if [ ! -f /etc/iscsi/initiatorname.iscsi ]; then
+		mkdir -p /etc/iscsi
+		iscsi-gen-initiatorname
+	fi
+	. /etc/iscsi/initiatorname.iscsi
+        ISCSI_INITIATOR="$InitiatorName"
+fi
+
+if [ -z "$ISCSI_TARGET_PORT" ]; then
+	ISCSI_TARGET_PORT=3260
+fi
+
+if [ -z "$ISCSI_TARGET_GROUP" ]; then
+	ISCSI_TARGET_GROUP=1
+fi
+
+iscsistart -i "$ISCSI_INITIATOR" -t "$ISCSI_TARGET_NAME" \
+	-g "$ISCSI_TARGET_GROUP" -a "$ISCSI_TARGET_IP" \
+	-p "$ISCSI_TARGET_PORT" \
+	"${ISCSI_USERNAME:+-u "$ISCSI_USERNAME"}" \
+	"${ISCSI_PASSWORD:+-w "$ISCSI_PASSWORD"}" \
+	"${ISCSI_IN_USERNAME:+-U "$ISCSI_IN_USERNAME"}" \
+	"${ISCSI_IN_PASSWORD:+-W "$ISCSI_IN_PASSWORD"}"
diff --git a/features/iscsi/rules.mk b/features/iscsi/rules.mk
new file mode 100644
index 00000000..42a20880
--- /dev/null
+++ b/features/iscsi/rules.mk
@@ -0,0 +1,5 @@
+MODULES_LOAD += $(ISCSI_MODULES)
+
+PUT_PROGS += iscsistart iscsi-gen-initiatorname iscsi-iname
+PUT_FILES += $(wildcard /etc/iscsi/initiatorname.iscsi)
+PUT_FEATURE_DIRS  += $(ISCSI_DATADIR)