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|
#!/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"
}
###########################
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
|
