From d1737f2dabac5e338061863c78a91b4c115365c7 Mon Sep 17 00:00:00 2001
From: Oleksii Konoplitskyi <okonopli@cisco.com>
Date: Fri, 25 May 2018 16:56:48 +0300
Subject: initramfs-framework: add nfsrootfs module

nfsrootfs module mounts rootfs via nfs parsing "nfsroot" and "ip" cmdline options.

Signed-off-by: Oleksii Konoplitskyi <okonopli@cisco.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
---
 .../initrdscripts/initramfs-framework/nfsrootfs    | 48 ++++++++++++++++++++++
 1 file changed, 48 insertions(+)
 create mode 100644 meta/recipes-core/initrdscripts/initramfs-framework/nfsrootfs

(limited to 'meta/recipes-core/initrdscripts/initramfs-framework')

diff --git a/meta/recipes-core/initrdscripts/initramfs-framework/nfsrootfs b/meta/recipes-core/initrdscripts/initramfs-framework/nfsrootfs
new file mode 100644
index 0000000000..e67ee4c25d
--- /dev/null
+++ b/meta/recipes-core/initrdscripts/initramfs-framework/nfsrootfs
@@ -0,0 +1,48 @@
+#!/bin/sh
+
+nfsrootfs_enabled() {
+	if [ ${bootparam_root} != "/dev/nfs" ] || [ -z ${bootparam_nfsroot} ]; then
+		return 1
+	fi
+	return 0
+}
+
+nfsrootfs_run() {
+	local nfs_opts
+	local location
+	local flags
+	local server_ip
+
+	nfs_opts=""
+	if [ "${bootparam_nfsroot#*,}" != "${bootparam_nfsroot}" ]; then
+		nfs_opts="-o ${bootparam_nfsroot#*,}"
+	fi
+
+	location="${bootparam_nfsroot%%,*}"
+	if [ "${location#*:}" = "${location}" ]; then
+		# server-ip not given. Get server ip from ip option
+		server_ip=""
+		if [ "${bootparam_ip#*:}" != "${bootparam_ip}" ]; then
+			server_ip=$(echo "$bootparam_ip" | cut -d: -f2)
+		fi
+
+		if [ -z "$server_ip" ]; then
+			fatal "Server IP is not set. Update ip or nfsroot options."
+		fi
+		location=${server_ip}:${location}
+	fi
+
+	flags="-o nolock"
+	if [ -n "$bootparam_ro" ] && ! echo "$bootparam_rootflags" | grep -w -q "ro"; then
+		if [  -n "$bootparam_rootflags" ]; then
+			bootparam_rootflags="$bootparam_rootflags,"
+		fi
+		bootparam_rootflags="${bootparam_rootflags}ro"
+	fi
+	if [ -n "$bootparam_rootflags" ]; then
+		flags="$flags -o $bootparam_rootflags"
+	fi
+
+	mount -t nfs ${flags} ${nfs_opts} ${location} ${ROOTFS_DIR}
+}
+
-- 
cgit 1.2.3-korg