File: libvirt-daemon-system.postinst

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libvirt 5.0.0-4+deb10u1
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#!/bin/sh
# postinst script for libvirt-daemon-system
#
# see: dh_installdeb(1)

set -e

# summary of how this script can be called:
#        * <postinst> `configure' <most-recently-configured-version>
#        * <old-postinst> `abort-upgrade' <new version>
#        * <conflictor's-postinst> `abort-remove' `in-favour' <package>
#          <new-version>
#        * <postinst> `abort-remove'
#        * <deconfigured's-postinst> `abort-deconfigure' `in-favour'
#          <failed-install-package> <version> `removing'
#          <conflicting-package> <version>
# for details, see http://www.debian.org/doc/debian-policy/ or
# the debian-policy package

# Source debconf library.
. /usr/share/debconf/confmodule

# Allocated UID and GID for libvirt-qemu
LIBVIRT_QEMU_UID=64055
LIBVIRT_QEMU_GID=64055

add_users_groups()
{
    if ! getent group libvirt >/dev/null; then
        addgroup --quiet --system libvirt
    fi

    if ! getent group kvm >/dev/null; then
        addgroup --quiet --system kvm
    fi
    # user and group libvirt runs qemu/kvm instances with
    if ! getent passwd libvirt-qemu >/dev/null; then

        # set uid if available (expected); don't fail otherwise.
        PARAMETER_UID=''
        if ! getent passwd $LIBVIRT_QEMU_UID >/dev/null; then
            PARAMETER_UID="--uid $LIBVIRT_QEMU_UID"
        fi

        adduser --quiet \
            --system \
            --ingroup kvm \
            --quiet \
            --disabled-login \
            --disabled-password \
            --home /var/lib/libvirt \
            --no-create-home \
            --gecos "Libvirt Qemu" \
            $PARAMETER_UID \
            libvirt-qemu
    fi
    if ! getent group libvirt-qemu >/dev/null; then

        # set gid if available (expected); don't fail otherwise.
        PARAMETER_GID=''
        if ! getent group $LIBVIRT_QEMU_GID >/dev/null; then
            PARAMETER_GID="--gid $LIBVIRT_QEMU_GID"
        fi

        addgroup --quiet --system $PARAMETER_GID libvirt-qemu
        adduser --quiet libvirt-qemu libvirt-qemu
    fi
}


add_statoverrides()
{
    ROOT_DIRS="\
        /var/lib/libvirt/images/ \
        /var/lib/libvirt/boot/   \
        /var/cache/libvirt/      \
    "

    QEMU_DIRS="\
         /var/lib/libvirt/qemu/   \
         /var/cache/libvirt/qemu/ \
         /var/lib/libvirt/qemu/channel/ \
         /var/lib/libvirt/qemu/channel/target/ \
    "

    SANLOCK_DIR="/var/lib/libvirt/sanlock"

    QEMU_CONF="/etc/libvirt/qemu.conf"

    for dir in ${ROOT_DIRS}; do
        if ! dpkg-statoverride --list "${dir}" >/dev/null 2>&1; then
            [ ! -e "${dir}" ] || chown root:root "${dir}"
            [ ! -e "${dir}" ] || chmod 0711 "${dir}"
        fi
    done

    for dir in ${QEMU_DIRS}; do
        if ! dpkg-statoverride --list "${dir}" >/dev/null 2>&1; then
            [ ! -e "${dir}" ] || chown libvirt-qemu:libvirt-qemu "${dir}"
            [ ! -e "${dir}" ] || chmod 0750 "${dir}"
        fi
    done

    if ! dpkg-statoverride --list "${SANLOCK_DIR}" >/dev/null 2>&1; then
        [ ! -e "${SANLOCK_DIR}" ] || chown root:root "${SANLOCK_DIR}"
        [ ! -e "${SANLOCK_DIR}" ] || chmod 0700 "${SANLOCK_DIR}"
    fi

    if ! dpkg-statoverride --list "${QEMU_CONF}" >/dev/null 2>&1; then
        [ ! -e "${QEMU_CONF}" ] || chown root:root "${QEMU_CONF}"
        [ ! -e "${QEMU_CONF}" ] || chmod 0600 "${QEMU_CONF}"
    fi
}


case "$1" in
    configure)
        add_users_groups
        add_statoverrides

	# Make sure the directories don't get removed on package removal since
	# logrotate chokes otherwise.
	for dir in qemu uml lxc; do
	    touch /var/log/libvirt/"${dir}"/.placeholder
	done
        # Remove left over empty directory from pre 1.2.7
        [ ! -d /etc/apparmor.d/libvirtd ] || rmdir --ignore-fail-on-non-empty /etc/apparmor.d/libvirtd
	
        # Force virtlockd to reexec if enabled
        if [ -d /run/systemd/system ]; then
          ! systemctl is-active -q virtlogd || systemctl reload virtlogd.service >/dev/null
          ! systemctl is-active -q virtlockd || systemctl reload virtlockd.service >/dev/null
        fi

        # Force refresh of capabilties (#731815)
        rm -f /var/cache/libvirt/qemu/capabilities/*.xml
    ;;

    abort-upgrade|abort-remove|abort-deconfigure)
    ;;

    *)
        echo "postinst called with unknown argument \`$1'" >&2
        exit 1
    ;;
esac

db_stop

# dh_installdeb will replace this with shell code automatically
# generated by other debhelper scripts.

#DEBHELPER#

exit 0