1#!/bin/bash
2#
3# Copyright (c) 2005-2009 Wind River Systems, Inc.
4#
5# SPDX-License-Identifier: GPL-2.0-only
6#
7
8usage() {
9	echo "Usage: $0 {start|stop|restart} <nfs-export-dir>"
10}
11
12if [ $# != 2 ]; then
13	usage
14	exit 1
15fi
16
17if [[ "$1" != "start" && "$1" != "stop" && "$1" != "restart" ]]; then
18	echo "Unknown command '$1'"
19	usage
20	exit 1
21fi
22
23if [ ! -d "$2" ]; then
24	echo "Error: '$2' does not exist"
25	usage
26	exit 1
27fi
28# Ensure the nfs-export-dir is an absolute path
29NFS_EXPORT_DIR=$(cd "$2" && pwd)
30
31SYSROOT_SETUP_SCRIPT=`which oe-find-native-sysroot 2> /dev/null`
32if [ -z "$SYSROOT_SETUP_SCRIPT" ]; then
33	echo "Error: Unable to find the oe-find-native-sysroot script"
34	echo "Did you forget to source your build environment setup script?"
35	exit 1
36fi
37. $SYSROOT_SETUP_SCRIPT qemu-helper-native
38
39if [ ! -e "$OECORE_NATIVE_SYSROOT/usr/bin/unfsd" ]; then
40	echo "Error: Unable to find unfsd binary in $OECORE_NATIVE_SYSROOT/usr/bin/"
41
42	echo "This shouldn't happen - something is missing from your toolchain installation"
43	exit 1
44fi
45
46if [ ! -d ~/.runqemu-sdk ]; then
47	mkdir -p ~/.runqemu-sdk
48fi
49
50NFS_INSTANCE=${NFS_INSTANCE:=0}
51EXPORTS=~/.runqemu-sdk/exports$NFS_INSTANCE
52RMTAB=~/.runqemu-sdk/rmtab$NFS_INSTANCE
53NFSPID=~/.runqemu-sdk/nfs$NFS_INSTANCE.pid
54MOUNTPID=~/.runqemu-sdk/mount$NFS_INSTANCE.pid
55
56PSEUDO_OPTS="-P $OECORE_NATIVE_SYSROOT/usr"
57PSEUDO_LOCALSTATEDIR="$NFS_EXPORT_DIR/../$(basename $NFS_EXPORT_DIR).pseudo_state"
58export PSEUDO_LOCALSTATEDIR
59
60if [ ! -d "$PSEUDO_LOCALSTATEDIR" ]; then
61	echo "Error: $PSEUDO_LOCALSTATEDIR does not exist."
62	echo "Did you create the export directory using runqemu-extract-sdk?"
63	exit 1
64fi
65
66# NFS server port number
67NFSD_PORT=${NFSD_PORT:=$[ 3049 + 2 * $NFS_INSTANCE ]}
68# mountd port number
69MOUNTD_PORT=${MOUNTD_PORT:=$[ 3048 + 2 * $NFS_INSTANCE ]}
70
71## For debugging you would additionally add
72## --debug all
73UNFSD_OPTS="-p -i $NFSPID -e $EXPORTS -n $NFSD_PORT -m $MOUNTD_PORT"
74
75# See how we were called.
76case "$1" in
77  start)
78	echo "Creating exports file..."
79	echo "$NFS_EXPORT_DIR (rw,no_root_squash,no_all_squash,insecure)" > $EXPORTS
80
81	echo "Starting User Mode nfsd"
82	echo "  $PSEUDO $PSEUDO_OPTS $OECORE_NATIVE_SYSROOT/usr/bin/unfsd $UNFSD_OPTS"
83	$PSEUDO $PSEUDO_OPTS $OECORE_NATIVE_SYSROOT/usr/bin/unfsd $UNFSD_OPTS
84	if [ ! $? = 0 ]; then
85		echo "Error starting nfsd"
86		exit 1
87	fi
88	# Check to make sure everything started ok.
89	if [ ! -f $NFSPID ]; then
90		echo "rpc.nfsd did not start correctly"
91		exit 1
92	fi
93	ps -fp `cat $NFSPID` > /dev/null 2> /dev/null
94	if [ ! $? = 0 ]; then
95		echo "rpc.nfsd did not start correctly"
96		exit 1
97	fi
98	echo " "
99	echo "On your target please remember to add the following options for NFS"
100	echo "nfsroot=IP_ADDRESS:$NFS_EXPORT_DIR,nfsvers=3,port=$NFSD_PORT,udp,mountport=$MOUNTD_PORT"
101	;;
102  stop)
103	if [ -f "$NFSPID" ]; then
104		echo "Stopping rpc.nfsd"
105		kill `cat $NFSPID`
106		rm -f $NFSPID
107	else
108		echo "No PID file, not stopping rpc.nfsd"
109	fi
110	if [ -f "$EXPORTS" ]; then
111		echo "Removing exports file"
112		rm -f $EXPORTS
113	fi
114	;;
115  restart)
116	$0 stop $NFS_EXPORT_DIR
117	$0 start $NFS_EXPORT_DIR
118	if [ ! $? = 0 ]; then
119		exit 1
120	fi
121	;;
122  *)
123	echo "$0 {start|stop|restart} <nfs-export-dir>"
124	;;
125esac
126
127exit 0
128