nfssetup.sh

来自「<B>Digital的Unix操作系统VAX 4.2源码</B>」· Shell 代码 · 共 992 行 · 第 1/2 页

#! /bin/sh
#  @(#)nfssetup.sh	4.2	(ULTRIX)	10/16/90
#									
# 			Copyright (c) 1986 by				
# 		Digital Equipment Corporation, Maynard, MA		
# 			All rights reserved.				
# 									
#    This software is furnished under a license and may be used and	
#    copied  only  in accordance with the terms of such license and	
#    with the  inclusion  of  the  above  copyright  notice.    This	
#    software  or  any  other copies thereof may not be provided or	
#    otherwise made available to any other person.   No title to and	
#    ownership of the software is hereby transferred.			
# 									
#    The information in this software is subject to change  without	
#    notice  and should not be construed as a commitment by Digital	
#    Equipment Corporation.						
# 									
#    Digital assumes no responsibility for the use  or  reliability	
#    of its software on equipment which is not supplied by Digital.	
#
# Purpose:	Set up NFS environment
# Usage:	nfssetup [client] [server]
# Environment:	Bourne shell script
# Date:		6/11/86
# Author:	Fred L. Templin
# 
# Remarks:
#    Sets up files:
#	/etc/rc.local
#	/etc/exports
#	/etc/fstab
#
#    Much of this has been borrowed from "netsetup.sh"
#

#
# Modification History:
#
#       03-Dec-89 lebel
#               Added -i option to mountd for ip address checking
#
#	28-Jul-88 Fred Glover
#		Add newlines, error checking for #nfsds, #biods
#
#	16-Feb-88 fglover
#		Add support for NFS locking
#

#
# Set up interrupt handlers:
#
QUIT='
	if [ -r $EXTMP ]
	then
		rm $EXTMP
	fi
	if [ -r $FSTMP ]
	then
		rm $FSTMP
	fi
	if [ -r $RCTMP ]
	then
		rm $RCTMP
	fi
	echo "Nfssetup terminated with no installations made."
	exit 1
'
#
# Trap ^c signal, etc.
#
trap 'eval "$QUIT"' 1 2 3 15

EXTMP=/tmp/nfssetup.ex.$$
FSTMP=/tmp/nfssetup.fs.$$
RCTMP=/tmp/nfssetup.rc.$$
VMUNIX=/vmunix
RCFILE=/etc/rc.local
FSFILE=/etc/fstab
EXFILE=/etc/exports
NFILE=/etc/networks
NFSSETUP=/etc/nfssetup
LOCAL_KEY="echo -n 'local daemons:'"
NFSSTART_KEY="# %NFSSTART% - NFS daemons added by \"nfssetup\""
NFSEND_KEY="# %NFSEND%"
NFSLOCKSTART_KEY="# %NFSLOCKSTART%"
NFSLOCKEND_KEY="# %NFSLOCKEND%"
USR_BIN=/usr/bin

nnfsd=0
nbiod=4
rwall=n
rlock=n
serving=""
startup=""
verbose=y
first_time=y
full_config=n


#
# PHASE ONE: Gather data!!
#

if [ $1 ]
then
	#
	# Set up default environments for client or server. Runs fast
	# and silent for ease of use in other scripts.
	#
	if [ $1 = "client" ]
	then
		verbose=""
		nbiod=4
	elif [ $1 = "server" ]
	then
		verbose=""
		nnfsd=4
		nbiod=4
		serving=y
	else
		echo "usage: nfssetup [ client ] [ server ]"
		eval "$QUIT"
	fi

	#
	# Require it to be run by root
	#
	if [ \! -w $RCFILE ]
	then
		exit 1
	fi

	#
	# Run it multi-user
	#
	if [ \! -d $USR_BIN ]
	then
		exit 1
	fi

	#
	# See if this is a re-install
	#
	egrep -s "$NFSSTART_KEY" $RCFILE
	if [ $? -eq 0 ]
	then
		egrep -s "$NFSEND_KEY" $RCFILE
		if [ $? -ne 0 ]
		then
			exit 1
		fi
		first_time=""
	fi
else
	if [ \! -w $RCFILE ]
	then
		echo "Please su to root first."
		eval "$QUIT"
	fi

	if [ \! -d $USR_BIN ]
	then
		echo "
Please bring the system to multi-user mode before running nfssetup."
		eval "$QUIT"
	fi

	egrep -s "$NFSSTART_KEY" $RCFILE
	if [ $? -eq 0 ]
	then
		egrep -s "$NFSEND_KEY" $RCFILE
		if [ $? -ne 0 ]
		then
			echo "
The network file system has already been installed but can not
be reconfigured automatically. To change the current NFS config-
uration, edit the file $RCFILE to remove the old NFS environment
and run nfssettup again."
			eval "$QUIT"
		fi
		echo "
The network file system has already been installed.  Would
you like to change the current NFS configuration?"
		again=y
		while [ $again ]
		do
			again=""
			echo -n "
Enter \"y\" or \"n\" [n]: "
			read ans
			case $ans in
			[yY]*)
				first_time=""
				;;
			[nN]*|"")
				eval "$QUIT"
				;;
			*)
				again=y
				;;
			esac
		done
	fi

	if [ $first_time ]
	then
		echo "Checking kernel configuration..."
		nm $VMUNIX | grep -s 'nfs_namei' 
		if [ $? -ne 0 ]
		then
			echo "
In order to make use of the network file system (NFS) services,
you must first configure the NFS support code into your ULTRIX-32
kernel.  Please consult the System Management Guide for information
on how to configure and bootstrap the new ULTRIX-32 kernel."
			eval "$QUIT"
		fi
		echo "
The nfssetup command configures the network file system (NFS)
environment for your system.  All systems using NFS facilities
must run the Remote Procedure Call (RPC) port mapper daemon.
An entry for this daemon is placed in the /etc/rc.local file
along with entries for the optional daemons you select."
	else
		echo "
Changing the current NFS configuration."
	fi

	echo "
You will be asked a series of questions about your system.
Default answers are shown in square brackets ([]).  To use a
default answer, press the RETURN key."
	#
	# Ask if NFS locking should be enabled
	#
	echo ""

	echo "
	Local locking supports local file and file region locking. Local
	locking is the default.  NFS locking supports local and remote (NFS) 
	file and file region locking. If you would like to enable the NFS
	locking functionality, then answer 'y' to the following question."

	again=y
	while [ $again ]
	do
		again=""
		echo ""
		echo -n "	NFS locking to be enabled [n] ? "
		read rlock
		case $rlock in
		[yY]*)
			rlock=y
			;;
		[nN]*|"")
			rlock=n
			;;
		*)
			again=y
			;;
		esac
	done

	#
	# Ask if he wants to run a full NFS Configuration...
	#
	if [ -z "$first_time" ]
	then
	again=y
	while [ $again ]
	do
		again=""
		echo ""
		echo -n "	Would you like to change the rest of your NFS configuration [n] ? "
		read full_config
		case $full_config in
		[yY]*)
			full_config=y
			;;
		[nN]*|"")
			full_config=n
			;;
		*)
			again=y
			;;
		esac
	done
	if [ $full_config = n ]
	then
	#
	# Copy curent rc.local to temp file
	# stripping %NFSLOCKSTART% to %NFSLOCKEND%
	#
	cat $RCFILE | sed "/%NFSLOCKSTART%/,/%NFSLOCKEND%/ d" > $RCTMP
	cp $RCTMP $RCFILE
	rm $RCTMP
	if [ $rlock = y ]
	then
	echo $NFSLOCKSTART_KEY >> $RCTMP
	echo "echo -n 'NFS Locking: '						>/dev/console" >> $RCTMP
	echo "[ -f /usr/etc/nfssetlock ] && {
	/usr/etc/nfssetlock on & echo -n 'enabled; '	>/dev/console
}" >> $RCTMP
	echo "[ -f /usr/etc/statd ] && {
	/usr/etc/statd & echo -n 'daemons: statd '			>/dev/console
}" >> $RCTMP
	echo "[ -f /usr/etc/lockd ] && {
	/usr/etc/lockd & echo 'and lockd'				>/dev/console
}" >> $RCTMP
	echo $NFSLOCKEND_KEY >> $RCTMP
	ed - $RCFILE << END >> /dev/null
/%NFSEND%/-1
.r $RCTMP
-
w
q 	
END
	rm $RCTMP
        else
	ed - $RCFILE << END >> /dev/null
/$NFSLOCKSTART_KEY/,/$NFSLOCKEND_KEY/ d
-
w
q 	
END
	fi
	echo
	echo -n "Nfssetup terminated with NFS locking "
	if [ $rlock = y ]
	then
		echo "enabled"
	else
		echo "disabled"
	fi	
	echo "and prior NFS configuration maintained."
	echo
	exit 0
	fi
	#
	# End of if not full config
	#
	fi
	#
	# End of if not first time
	#

	#
	#   Determine state of this NFS machine.  PURE client (no exports made),
	# or exporter.
	#
	again=y
	while [ $again ]
	do
		again=""
		echo ""
		echo -n "	Will you be exporting any directories [n] ? "
		read serving
		case $serving in
		[yY]*)
			serving=y
			;;
		[nN]*|"")
			serving=""
			;;
		*)
			again=y
			;;
		esac
	done

	if [ $serving ]
	then
	#
	# Since we'll be serving up directories, need to put "nfsd"
	# in the local rc script along with the others.  We'll ask
	# to see if the user wants more or less daemons than usual.
	#
		nnfsd=4
		echo ""
		if [ $first_time ]
		then
			echo "
	Systems that export NFS directories must run /etc/nfsd to
	handle NFS requests from clients.  You can configure up
	to 20 nfsd daemons, but for average workload situations,
	4 is a good number to run."
		fi
		flag=y
		while [ $flag ]
		do
			flag=""
			echo ""
			echo -n "	Enter the number of nfsd servers to run [4] : "
			read num
			if [ $num ]
			then
				if [ $num -le 0 ]
				then
					flag=y
					echo "	Number must be greater than zero"
				elif [ $num -ge 20 ]
				then
					nnfsd=20
				else
					nnfsd=$num
				fi
			fi
		done

	fi
	#
	# Ask if he wants any "biod" daemons.
	#
	if [ $first_time ]
	then
		echo ""
		echo "
	NFS clients can use block I/O daemons for buffering
	data transfers, although their use is not required.
	You can configure up to 5 biod daemons on your system
	based upon the workload you expect, but for average
	workload situations, 4 is a good number to run."
	fi
	flag=y
	while [ $flag ]
	do
		flag=""
		echo ""
		echo -n "	Enter the number of block I/O daemons to run [4] : "
		read num
		if [ $num ]
		then
			if [ $num -lt 0 ]
			then
				flag=y
				echo "	Number must be greater than or equal zero"
			elif [ $num -ge 5 ]
			then
				nbiod=5
			else
				nbiod=$num
			fi
		fi
	done

	#
	# Ask if he wants to run the rwalld daemon...
	#
	if [ $first_time ]
	then
		echo ""
		echo "
	NFS clients that rely heavily on having certain NFS
	directories mounted may wish to be notified in the
	event of NFS servers going down.  In order for users
	on your system to receive notifications, you must run
	the remote wall daemon. (rwalld)"
	fi
	again=y
	while [ $again ]
	do
		again=""
		echo ""
		echo -n "	Would you like to run the rwalld daemon [n] ? "
		read rwall
		case $rwall in
		[yY]*)
			rwall=y
			;;
		[nN]*|"")
			rwall=n
			;;
		*)
			again=y
			;;
		esac
	done

	#
	# He's exporting directories.  Find out which ones and validate them
	# but don't add them to "/etc/exports" just yet!
	#
	if [ $serving ]
	then
		if [ $first_time ] || [ \! -f $EXFILE ]
		then
			echo "
You are now setting up your directory export list.  Enter the
full pathnames of the directories to be exported.  For each
pathname, enter the network group names and/or machine names to
be given access permission to this directory, or a null list to
indicate general permission.  (Network groups are ONLY available
on machines using Yellow Pages).  This information is placed in the
/etc/exports file.  Press the RETURN key to terminate the pathname
and permissions lists."