145 lines
3.8 KiB
Bash
Executable file
145 lines
3.8 KiB
Bash
Executable file
#!/bin/sh
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#
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# systemd trigger to enable/disable services, create/remove files via
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# systemd-tmpfiles(5) and load/unload modules via modules-load.d(5).
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#
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# The following env vars are recognized:
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# - systemd_services (expects at least two arguments: service name
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# and a boolean to restart automatically the service on upgrade).
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# - systemd_tmpfiles (expects a black separated list of fileanmes).
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# - systemd_modules (expects a blank separated list of filenames).
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#
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# Examples:
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# systemd_services="foo.service off blah.service on"
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# systemd_tmpfiles="foo.conf blah.conf"
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# systemd_modules="foo.conf blah.conf"
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#
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# Arguments: $ACTION = [run/targets]
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# $TARGET = [post-install/pre-remove]
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# $PKGNAME
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# $VERSION
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# $UPDATE = [yes/no]
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#
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ACTION="$1"
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TARGET="$2"
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PKGNAME="$3"
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VERSION="$4"
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UPDATE="$5"
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export PATH="$PATH:/usr/local/bin"
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case "$ACTION" in
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targets)
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echo "post-install pre-remove"
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;;
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run)
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[ ! -x bin/systemctl ] && exit 0
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[ -z "$systemd_services" -a -z "$systemd_tmpfiles" -a -z "$systemd_modules" ] && exit 1
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systemd-notify --booted
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if [ $? -eq 0 ]; then
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systemd_booted=yes
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fi
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set -- ${systemd_services}
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while [ $# -gt 0 ]; do
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_srv="$1"
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case "$2" in
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[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
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restart=1
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;;
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*)
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unset restart
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;;
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esac
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if [ "$TARGET" = "pre-remove" ]; then
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if [ "$UPDATE" = "no" ]; then
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# package is being removed.
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# stop and disable the unit.
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echo "Stopping systemd service ${_srv}..."
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systemctl stop ${_srv} >/dev/null 2>&1 || :
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echo "Disabling systemd service ${_srv}..."
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systemctl --no-reload disable ${_srv} >/dev/null 2>&1 || :
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else
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# Package update, just disable the unit.
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echo "Disabling systemd service ${_srv}..."
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systemctl --no-reload disable ${_srv} >/dev/null 2>&1 || :
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fi
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else
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if [ "$UPDATE" = "no" ]; then
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# package is being installed.
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# enable (but don't start) the unit by default.
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echo "Enabling systemd service ${_srv}..."
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systemctl enable ${_srv} >/dev/null 2>&1 || :
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if [ -n "$systemd_booted" ]; then
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# reload systemd if running.
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systemctl daemon-reload >/dev/null 2>&1 || :
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fi
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cat <<_EOF
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==========================================================================
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The service "${_srv}" has been enabled by default,
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that means that it will be started in next boot. To start it immediately,
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execute the following command (as root):
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$ systemctl start ${_srv}
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And to stop it:
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$ systemctl stop ${_srv}
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Refer to the systemd documentation if more information is required.
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==========================================================================
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_EOF
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else
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# Enable the unit in case it wasn't added.
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systemctl enable ${_srv} >/dev/null 2>&1 || :
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# package is being updated.
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if [ -n "$system_booted" ]; then
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# reload systemd if running.
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systemctl daemon-reload >/dev/null 2>&1 || :
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fi
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if [ -n "$restart" ]; then
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# try restarting package service.
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systemctl try-restart ${_srv} >/dev/null 2>&1 || :
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else
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echo "systemd ${_srv} service must be restarted manually!"
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fi
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fi
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fi
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shift; shift
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done
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if [ "$TARGET" = "pre-remove" ]; then
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# Unload the modules specified in systemd_modules files.
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for f in ${systemd_modules}; do
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for j in $(cat usr/lib/modules-load.d/${f}); do
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modprobe -rq ${j} || :
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done
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done
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else
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# Create stuff specified in systemd_tmpfiles files.
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for f in ${systemd_tmpfiles}; do
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if [ "$PKGNAME" = "systemd" -a "$f" = "systemd.conf" ]; then
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# This file is only meant to be run at boot-time.
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continue
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fi
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systemd-tmpfiles --create ${f} || :
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done
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# Load modules specified in systemd_modules files.
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for f in ${systemd_modules}; do
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for j in $(cat usr/lib/modules-load.d/${f}); do
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modprobe -q ${j} || :
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done
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done
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fi
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;;
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*)
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exit 1
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;;
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esac
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exit 0
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