#!/sbin/sh
#	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T
#	  All Rights Reserved

#	THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T
#	The copyright notice above does not evidence any
#	actual or intended publication of such source code.

#
#	Copyright (c) 1991, Sun Microsystems Inc.
#

#ident	"@(#)rootusr	1.8	95/02/24 SMI"


# Make sure that the libraries essential
# to this stage of booting can be found.
LD_LIBRARY_PATH=/etc/lib; export LD_LIBRARY_PATH

#
#
# Configure the software loopback driver. The network initialization is
# done early to support diskless and dataless configurations.
#
/sbin/ifconfig lo0 127.0.0.1 up 2>&1 >/dev/null

#
# For interfaces that were configured by the kernel (e.g. those on diskless
# machines), reset the netmask using the local "/etc/netmasks" file, if 
# one exists.
#
/sbin/ifconfig -au netmask + broadcast + 2>&1 >/dev/null

#
# Get the list of network interfaces to configure by breaking 
# /etc/hostname.* into separate args by using "." as a shell separator 
# character, then step through args and ifconfig every other arg.
# Set the netmask along the way using local "/etc/netmasks" file.
# This also sets up the streams plumbing for the interface.
# With an empty /etc/hostname.* file this only sets up the streams plumbing
# allowing the ifconfig auto-revarp command will attempt to set the address.
#
interface_names="`echo /etc/hostname.*[0-9]		2>/dev/null`"
if test "$interface_names" != "/etc/hostname.*[0-9]"
then
        (
		echo "configuring network interfaces:\c"
                IFS="$IFS."
                set `echo /etc/hostname\.*[0-9]`
                while test $# -ge 2
                do
                        shift
                        if [ "$1" != "xx0" ]; then
				 addr=`shcat /etc/hostname\.$1`
				 /sbin/ifconfig $1 plumb
				 if test -n "$addr"
				 then
					/sbin/ifconfig $1 inet "$addr" netmask + \
						broadcast + -trailers up \
						2>&1 > /dev/null
				 fi
				 echo " $1\c"
                        fi
                        shift
                done
		echo "."
        )
fi

#
# configure the rest of the interfaces automatically, quietly.
#
/sbin/ifconfig -ad auto-revarp netmask + broadcast + -trailers up \
	2>&1 >/dev/null

#
# Set the hostname from a local config file, if one exists.
#
hostname="`shcat /etc/nodename		2>/dev/null`"
if [ ! -z "$hostname" ]; \
then
        /sbin/uname -S $hostname
fi

#
# Otherwise, set host information from bootparams RPC protocol.
#
if [ -z "`/sbin/uname -n`" ]; then
        /sbin/hostconfig -p bootparams
fi

# 
# If local and network configuration failed, re-try network
# configuration until we get an answer.  We want this loop to be
# interruptible so that the machine can still be brought up manually
# when the servers are not cooperating.
#

trap 'intr=1' 2 3
while [ -z "`/sbin/uname -n`" -a ! -f /etc/.UNCONFIGURED  -a -z "${intr}" ]; do
        echo "re-trying host configuration..."
        /sbin/ifconfig -ad auto-revarp up 2>&1 >/dev/null
        /sbin/hostconfig -p bootparams 2>&1 >/dev/null
done
trap 2 3

echo "Hostname: `/sbin/uname -n`" >&2

#
# If "/usr" is going to be NFS mounted from a host on a different
# network, we must have a routing table entry before the mount is
# attempted.  One may be added by the diskless kernel or by the
# "hostconfig" program above.  Setting a default router here is a problem
# because the default system configuration does not include the
# "route" program in "/sbin".  Thus we only try to add a default route
# at this point if someone managed to place a static version of "route" into
# "/sbin".  Otherwise, we may add the route at run level 2 after "/usr"
# has been mounted and NIS is running.
#
# Note that since NIS is not running at this point, the router's name
# must be in "/etc/hosts" or its numeric IP address must be used in the file.
#
if [ -f /sbin/route -a -f /etc/defaultrouter ]; then
        /sbin/route -f add default `cat /etc/defaultrouter` 1
fi

#
# Root is already mounted (by the kernel), but still needs to be checked,
# possibly remounted and entered into mnttab. First mount /usr read only
# if it is a separate file system. This must be done first to allow
# utilities such as fsck and setmnt to reside on /usr minimizing the space
# required by the root file system.
#
exec < ${vfstab}; readvfstab "/usr"
if [ "${mountp}" ]
then
	if [ "${fstype}" = "cachefs" ]; then
		#
		# Mount without the cache initially.  We'll enable it
		# later at remount time.  This lets us avoid
		# teaching the statically linked mount program about
		# cachefs.  Here we determine the backfstype.
		# This is not pretty, but we have no tools for parsing
		# the option string until we get /usr mounted...
		#
		case "$mntopts" in
		*backfstype=nfs*)
			cfsbacktype=nfs
			;;
		*backfstype=hsfs*)
			cfsbacktype=hsfs
			;;
		*)
			echo "invalid vfstab entry for /usr"
			cfsbacktype=nfs
			;;
		esac
		/sbin/mount -m -F ${cfsbacktype} -o ro ${special} ${mountp}
	else
		/sbin/mount -m -o ro /usr
	fi
fi

# Reset the library path now that we are
# past the critical stage.
LD_LIBRARY_PATH=/usr/lib; export LD_LIBRARY_PATH