xref: /illumos-gate/usr/src/cmd/svc/milestone/fs-root (revision b1593d50e783f7d66722dde093752b74ffa95176)

#!/sbin/sh
#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
#
#

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

libc_mount() {
	#
	# If there is an optimized libc available in /usr that fits this
	# processor, mount it on top of the base libc.
	#
	LIBC_MOE_32=`/usr/bin/moe -32 '/usr/lib/libc/$HWCAP'`
	if [ -n "$LIBC_MOE_32" ]; then
		/usr/sbin/mount | egrep -s "^/lib/libc.so.1 on "
		if [ $? -ne 0 ]; then
			/usr/sbin/mount -O -F lofs $LIBC_MOE_32 /lib/libc.so.1
		fi
	fi

	ARCH64=`isainfo | awk '{print $1}'`
	LIBC_MOE_64=`/usr/bin/moe -64 /usr/lib/$ARCH64/libc/'$HWCAP'`
	if [ -n "$LIBC_MOE_64" ]; then
		/usr/sbin/mount | egrep -s "^/lib/$ARCH64/libc.so.1 on "
		if [ $? -ne 0 ]; then
			/usr/sbin/mount -O -F lofs $LIBC_MOE_64 \
				/lib/$ARCH64/libc.so.1
		fi
	fi
}

# This mount function is sun4v only. It may be melded with the sun4u-us3
# version later.
sun4v_libc_psr_mount() {
	LIBC_MOE_32=`/usr/bin/moe -32 /platform/$PLAT/lib/libc_psr/'$HWCAP'`
	if [ -n "$LIBC_MOE_32" ]; then
		/usr/sbin/mount |
		    egrep -s "^/platform/[^/]*/lib/libc_psr.so.1 on "
		if [ $? -ne 0 ]; then
			/usr/sbin/mount -O -F lofs $LIBC_MOE_32 \
			    /platform/$PLAT/lib/libc_psr.so.1
		fi
	fi

	LIBC_MOE_64=`/usr/bin/moe -64 \
	    /platform/$PLAT/lib/sparcv9/libc_psr/'$HWCAP'`
	if [ -n "$LIBC_MOE_64" ]; then
		/usr/sbin/mount |
		    egrep -s "^/platform/[^/]*/lib/sparcv9/libc_psr.so.1 on "
		if [ $? -ne 0 ]; then
			/usr/sbin/mount -O -F lofs $LIBC_MOE_64 \
			    /platform/$PLAT/lib/sparcv9/libc_psr.so.1
		fi
	fi
}

# This is specific to sun4u[-us3].
# try to intelligently handle the various ways that a hwcap library can
# be present for libc_psr for sun4u.
sun4u_libc_psr_mount() {
	# first look for $PLAT specific
	# the string $HWCAP is not an env var but part of the argument to moe
	LIBC_MOE_32=`/usr/bin/moe -32 /platform/$PLAT/lib/libc_psr/'$HWCAP'`
	if [ -n "$LIBC_MOE_32" ]; then
		/usr/sbin/mount |
		    egrep -s "^/platform/$PLAT/lib/libc_psr.so.1 on "
		if [ $? -ne 0 ]; then
			/usr/sbin/mount -O -F lofs $LIBC_MOE_32 \
			    /platform/$PLAT/lib/libc_psr.so.1
		fi
	else
		# try the 'generic' one under $ARCH
		LIBC_MOE_32=`/usr/bin/moe -32 \
		    /platform/$ARCH/lib/libc_psr/'$HWCAP'`
		if [ -n "$LIBC_MOE_32" ]; then
			/usr/sbin/mount |
			    egrep -s "^/platform/$ARCH/lib/libc_psr.so.1 on "
			if [ $? -ne 0 ]; then
				/usr/sbin/mount -O -F lofs $LIBC_MOE_32 \
				    /platform/$ARCH/lib/libc_psr.so.1
			fi
		fi

	fi

	# now repeat for 64 bit.

	LIBC_MOE_64=`/usr/bin/moe -64 \
	    /platform/$PLAT/lib/sparcv9/libc_psr/'$HWCAP'`
	if [ -n "$LIBC_MOE_64" ]; then
		/usr/sbin/mount |
		    egrep -s "^/platform/$PLAT/lib/sparcv9/libc_psr.so.1 on "
		if [ $? -ne 0 ]; then
			/usr/sbin/mount -O -F lofs $LIBC_MOE_64 \
			    /platform/$PLAT/lib/sparcv9/libc_psr.so.1
		fi
	else
		# now try $ARCH version
		LIBC_MOE_64=`/usr/bin/moe -64 \
		    /platform/$ARCH/lib/sparcv9/libc_psr/'$HWCAP'`
		if [ -n "$LIBC_MOE_64" ]; then
			/usr/sbin/mount |
			    egrep -s \
			    "^/platform/$ARCH/lib/sparcv9/libc_psr.so.1 on "
			if [ $? -ne 0 ]; then
				/usr/sbin/mount -O -F lofs $LIBC_MOE_64 \
				    /platform/$ARCH/lib/sparcv9/libc_psr.so.1
			fi
		fi
	fi
}

#
# Discover architecture and find and mount optimal libc_psr
#
libc_psr_mount() {
	PLAT=`/usr/bin/uname -i`
	ARCH=`/usr/bin/uname -m`
	if [ "$ARCH" = "sun4v" ]; then
		# Check if we already loaded libc_hwcapX.so.1 thru libc_mount
		# We can get rid of this check (and the libc_psr mount),
		# if all the sun4v platforms start using libc_hwcap.
		if [ ! -n "$LIBC_MOE_32" ]; then
			sun4v_libc_psr_mount
		fi
	elif [ "$ARCH" = "sun4u" ]; then
		if [ -h /platform/$PLAT/lib/libc_psr.so.1 ]; then
			LINKSTO=`/usr/bin/ls -l \
			    /platform/$PLAT/lib/libc_psr.so.1 |
			    /usr/bin/awk '{print $NF}'`
			if [ "$LINKSTO" = \
			    "../../sun4u-us3/lib/libc_psr.so.1" ]; then
				ARCH=sun4u-us3
			fi
		fi
		sun4u_libc_psr_mount
	fi
}

. /lib/svc/share/smf_include.sh
. /lib/svc/share/fs_include.sh

#
# Most of the operations in this script are only necessary in the global
# zone but due to the way initialization scripts like this are packaged,
# it needs to currently exist for all zones.
#
if smf_is_nonglobalzone; then
	libc_mount
	libc_psr_mount
	exit $SMF_EXIT_OK
fi

#
# Root is already mounted (by the kernel), but still needs to be
# checked, possibly remounted and entered into mnttab.  First
# mount /usr if it is a separate file system.  If the file system
# type is something other than zfs, mount it read-only.  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.
#
readvfstab "/usr" < $vfstab
if [ -n "$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
			;;
		*)
			msg='invalid vfstab entry for /usr'
			echo $msg
			echo "$SMF_FMRI:" $msg >/dev/msglog
			cfsbacktype=nfs
			;;
		esac
		mountfs - /usr $cfsbacktype ro $special ||
		    exit $SMF_EXIT_ERR_FATAL
	elif [ "$fstype" = zfs ]; then
		mountfs - /usr $fstype $mntopts - || exit $SMF_EXIT_ERR_FATAL
	else
		#
		# Must use -o largefiles here to ensure the
		# read-only mount does not fail as a result of
		# having a large file present on /usr. This gives
		# fsck a chance to fix up the largefiles flag
		# before we remount /usr read-write.
		#
		if [ "x$mntopts" = x- ]; then
			mntopts='ro,largefiles'
		else
			checkopt largefiles $mntopts
			if [ "x$option" != xlargefiles ]; then
				mntopts="largefiles,$mntopts"
			fi

			checkopt ro $mntopts
			if [ "x$option" != xro ]; then
				mntopts="ro,$mntopts"
			fi

			#
			# Requesting logging on a read-only mount
			# causes errors to be displayed, so remove
			# "logging" from the list of options for now.
			# The read-write mount performed later will
			# specify the logging option if appropriate.
			#

			checkopt logging $mntopts
			if [ "x$option" = xlogging ]; then
				mntopts="$otherops"
			fi
		fi

		mountfs -O /usr $fstype $mntopts - || exit $SMF_EXIT_ERR_FATAL
	fi
fi

#
# if we are booted from zfs, the /usr mount probably won't be a
# legacy mount.  Use the standard zfs mount command instead.

readmnttab "/" < /etc/mnttab
if [ "$fstype" = zfs ]; then
	mountp=`/sbin/zfs get -H -o value mountpoint $special/usr 2>/dev/null`
	#
	# if mountp = /usr, there is a non-legacy mount of /usr
	# in the boot environment being booted.
	#
	if [ "x$mountp" = "x/usr" ] ; then
		/sbin/zfs mount $special/usr
		if [ $? != 0 ] ; then
				msg='zfs-mount failed'
				echo $msg
				echo "$SMF_FMRI:" $msg >/dev/msglog
		 	exit $SMF_EXIT_ERR_FATAL
		fi
	fi
fi

#
# Also mount /boot now so that things like keymap.sh can access
# boot properties through eeprom.  Readonly isn't required because
# /boot (and other pcfs filesystems) aren't fsck'ed at boot yet.
# Also, we don't account for caching /boot as it must be on a local
# disk.  So what's in vfstab is fine as it stands; just look to see
# if it's there and avoid the mount if not.
#
readvfstab "/boot" < $vfstab

if [ -n "$mountp" ]; then
	mountfs - /boot $fstype $mntopts - || exit $SMF_EXIT_ERR_FATAL
fi

#
# Update kernel driver.conf cache with any additional driver.conf
# files found on /usr, and device permissions from /etc/minor_perm.
#
/usr/sbin/devfsadm -I -P

libc_mount
libc_psr_mount

exit $SMF_EXIT_OK