Cross Reference: /pkg/src/svc/svc-pkg-mdns

#!/usr/bin/ksh -p
#
# 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 (c) 2010, 2016, Oracle and/or its affiliates. All rights reserved.
#

# Load SMF constants and functions
. /lib/svc/share/smf_include.sh

if [[ -z "$SMF_FMRI" ]]; then
    echo "this script can only be invoked by smf(7)"
    exit $SMF_EXIT_ERR_NOSMF
fi

case "$1" in
'start')
    # Handles mDNS depot startup

    # retrieve the pkg_root property. If the variable is left empty
    # pkg_root is /
    pkg_root=$(svcprop -p pkg/pkg_root $SMF_FMRI)
    if [[ $? -ne 0 ]]; then
        echo "service property pkg/pkg_root not defined for" \
            "service: $SMF_FMRI"
        exit $SMF_EXIT_ERR_CONFIG
    fi

    # make sure pkg_root ends with a /
    echo $pkg_root | grep /$ >/dev/null
    if [[ $? -ne 0 ]]; then
        pkg_root="${pkg_root}/"
    fi

    # adjust the PYTHONPATH to point to the current environment
    # we need to make sure to adjust the PYTHONPATH accordingly
    # to a Python 2.7 or 3.4 environment
    python_ver=$(head -1 ${pkg_root}usr/lib/pkg.depotd 2>/dev/null |
        awk -F/ '{print $NF}')
    if [[ $python_ver != *python* ]]; then
        echo "invalid python version $python_ver found in"
        echo "${pkg_root}usr/lib/pkg.depotd"
        exit $SMF_EXIT_ERR_FATAL
    fi

    PYTHONPATH=${pkg_root}usr/lib/${python_ver}/vendor-packages/:$PYTHONPATH

    export PYTHONPATH

    #
    # If this process has net_privaddr, then we pass it along.
    # If not, we ensure that we don't specify it, since that will
    # cause ppriv to throw an error.
    #
    privaddr=""
    ppriv -v $$ | grep 'E: ' | grep net_privaddr > /dev/null 2>&1
    if [[ $? == 0 ]]; then
        echo "Dropping net_privaddr privilege."
        privaddr=",net_privaddr"
    fi

    #
    # Build up the privileges available starting with "basic".  This
    # provides some protection even when the depot runs as root.
    #
    wrapper="ppriv -s \
            A=basic,-file_link_any,-proc_info,-proc_session$privaddr -e"

    # Build the command to start pkg.depotd.
    cmd="$wrapper ${pkg_root}usr/lib/pkg.depotd --llmirror --cfg $SMF_FMRI"
    # Echo the command so that the log contains the command used to start
    # the depot.
    echo $cmd

    exec $cmd

    ;;

'stop')
    #
    # Strategy: First, try shutting down depot using polite kill.  Use up
    # as much as possible of the allotted timeout period waiting for polite
    # kill to take effect.  As time runs out, try a more aggressive kill.
    #
    SVC_TIMEOUT=`svcprop -p stop/timeout_seconds $SMF_FMRI`
    if [[ $? -ne 0 ]]; then
        echo "service property stop/timeout_seconds not defined" \
            "for service: $SMF_FMRI"
        exit $SMF_EXIT_ERR_CONFIG
    fi

    #
    # Note that we're working around an oddity in smf_kill_contract: it
    # waits in 5 second chunks and can overshoot the specified timeout
    # by as many as 4 seconds.  Example: a specified wait of 6 will result
    # in a wait of 10 seconds in reality.  Since we may potentially do a
    # first kill and then a second, we must ensure that at least 8 seconds
    # of slop is left in reserve.  To be paranoid, we go for 10.
    #
    ((POLITE=$SVC_TIMEOUT - 10))
    if [[ $POLITE -gt 0 ]]; then
        smf_kill_contract $2 TERM 1 $POLITE
        ret=$?
        # '2' indicates timeout with non-empty contract.
        if [[ $ret -eq 2 ]]; then
            echo "Gentle contract kill timed out after" \
                    "$POLITE seconds, trying SIGKILL." >&2
            #
            # Again, despite the specified timeout, this will
            # take a minimum of 5 seconds to complete.
            #
            smf_kill_contract $2 KILL 1 1
            if [[ $ret -ne 0 ]]; then
                exit $SMF_EXIT_ERR_FATAL
            fi
        fi
    else
        # If the timeout is too short, we just try once, politely.
        smf_kill_contract $2 TERM
    fi
    ;;

*)
    echo "Usage: $0 { start | stop }"
    exit $SMF_EXIT_ERR_CONFIG
    ;;

esac
exit $SMF_EXIT_OK