1 files changed, 163 insertions, 0 deletions
diff --git a/ctdb/config/events/legacy/50.samba.script b/ctdb/config/events/legacy/50.samba.script
new file mode 100755
index 0000000..81c6e7f
--- /dev/null
+++ b/ctdb/config/events/legacy/50.samba.script
@@ -0,0 +1,163 @@
+#!/bin/sh
+# ctdb event script for Samba
+
+[ -n "$CTDB_BASE" ] || \
+	CTDB_BASE=$(d=$(dirname "$0") && cd -P "$d" && dirname "$PWD")
+
+. "${CTDB_BASE}/functions"
+
+detect_init_style
+
+case $CTDB_INIT_STYLE in
+	suse)
+		CTDB_SERVICE_SMB=${CTDB_SERVICE_SMB:-smb}
+		;;
+	debian)
+		CTDB_SERVICE_SMB=${CTDB_SERVICE_SMB:-smbd}
+		;;
+	*)
+		# Use redhat style as default:
+		CTDB_SERVICE_SMB=${CTDB_SERVICE_SMB:-smb}
+		;;
+esac
+
+service_name="samba"
+
+load_script_options
+
+ctdb_setup_state_dir "service" "$service_name"
+
+service_start ()
+{
+    # make sure samba is not already started
+    service "$CTDB_SERVICE_SMB" stop > /dev/null 2>&1
+    killall -0 -q smbd && {
+	sleep 1
+	# make absolutely sure samba is dead
+	killall -q -9 smbd
+    }
+    # start Samba service. Start it reniced, as under very heavy load
+    # the number of smbd processes will mean that it leaves few cycles
+    # for anything else
+    nice_service "$CTDB_SERVICE_SMB" start || die "Failed to start samba"
+}
+
+service_stop ()
+{
+    service "$CTDB_SERVICE_SMB" stop
+    program_stack_traces "smbd" 5
+}
+
+######################################################################
+# Show the testparm output using a cached smb.conf to avoid delays due
+# to registry access.
+
+# script_state_dir set by ctdb_setup_state_dir()
+# shellcheck disable=SC2154
+smbconf_cache="$script_state_dir/smb.conf.cache"
+
+testparm_foreground_update ()
+{
+    _timeout="$1"
+
+    # No need to remove these temporary files, since there are only 2
+    # of them.
+    _out="${smbconf_cache}.out"
+    _err="${smbconf_cache}.err"
+
+    timeout "$_timeout" testparm -v -s >"$_out" 2>"$_err"
+    case $? in
+	0) : ;;
+	124)
+	    if [ -f "$smbconf_cache" ] ; then
+		echo "WARNING: smb.conf cache update timed out - using old cache file"
+		return 1
+	    else
+		echo "ERROR: smb.conf cache create failed - testparm command timed out"
+		exit 1
+	    fi
+	    ;;
+	*)
+	    if [ -f "$smbconf_cache" ] ; then
+		echo "WARNING: smb.conf cache update failed - using old cache file"
+		cat "$_err"
+		return 1
+	    else
+		echo "ERROR: smb.conf cache create failed - testparm failed with:"
+		cat "$_err"
+		exit 1
+	    fi
+    esac
+
+    # Only using $$ here to avoid a collision.  This is written into
+    # CTDB's own state directory so there is no real need for a secure
+    # temporary file.
+    _tmpfile="${smbconf_cache}.$$"
+    # Patterns to exclude...
+    _pat='^[[:space:]]+(registry[[:space:]]+shares|include|copy|winbind[[:space:]]+separator)[[:space:]]+='
+    grep -Ev "$_pat" <"$_out" >"$_tmpfile"
+    mv "$_tmpfile" "$smbconf_cache" # atomic
+
+    return 0
+}
+
+testparm_background_update ()
+{
+    _timeout="$1"
+
+    testparm_foreground_update "$_timeout" >/dev/null 2>&1 </dev/null &
+}
+
+testparm_cat ()
+{
+    testparm -s "$smbconf_cache" "$@" 2>/dev/null
+}
+
+list_samba_shares ()
+{
+    testparm_cat |
+    sed -n -e 's@^[[:space:]]*path[[:space:]]*=[[:space:]]@@p' |
+    sed -e 's/"//g'
+}
+
+list_samba_ports ()
+{
+    testparm_cat --parameter-name="smb ports" |
+    sed -e 's@,@ @g'
+}
+
+###########################
+
+case "$1" in
+startup)
+	service_start
+	;;
+
+shutdown)
+	service_stop
+	;;
+
+monitor)
+	testparm_foreground_update 10
+	ret=$?
+
+	smb_ports="$CTDB_SAMBA_CHECK_PORTS"
+	if [ -z "$smb_ports" ] ; then
+	    smb_ports=$(list_samba_ports)
+	    [ -n "$smb_ports" ] || die "Failed to set smb ports"
+	fi
+	# Intentionally unquoted multi-word value here
+	# shellcheck disable=SC2086
+	ctdb_check_tcp_ports $smb_ports || exit $?
+
+	if [ "$CTDB_SAMBA_SKIP_SHARE_CHECK" != "yes" ] ; then
+	    list_samba_shares | ctdb_check_directories || exit $?
+	fi
+
+	if [ $ret -ne 0 ] ; then
+	    testparm_background_update 10
+	fi
+	;;
+esac
+
+exit 0