Cross Reference: /illumos-gate/usr/src/cmd/svc/milestone/fs-root

	fs-root revision a227b7f4f323ad89c40a86c430a5e891504a8e8b
#!/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 2008 Sun Microsystems, Inc.  All rights reserved.
# Use is subject to license terms.
#
# ident "%Z%%M% %I% %E% SMI"
#
# Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T.
# All rights reserved.
#

# 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.
    #
    MOE=`/usr/bin/moe -32 '/usr/lib/libc/$HWCAP'`
    if [ -n "$MOE" ]; then
        /usr/sbin/mount | egrep -s "^/lib/libc.so.1 on "
        if [ $? -ne 0 ]; then
            /usr/sbin/mount -O -F lofs $MOE /lib/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 [ "$ARCH" = "sun4v" ]; then
        sun4v_libc_psr_mount
    elif [ "$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