ctdb/config/events.d/50.samba

   1 #!/bin/sh
   2 # ctdb event script for Samba
   3
   4 [ -n "$CTDB_BASE" ] || \
   5     export CTDB_BASE=$(cd -P $(dirname "$0") ; dirname "$PWD")
   6
   7 . $CTDB_BASE/functions
   8
   9 detect_init_style
  10
  11 case $CTDB_INIT_STYLE in
  12         suse)
  13                 CTDB_SERVICE_SMB=${CTDB_SERVICE_SMB:-smb}
  14                 CTDB_SERVICE_NMB=${CTDB_SERVICE_NMB:-nmb}
  15                 ;;
  16         debian)
  17                 CTDB_SERVICE_SMB=${CTDB_SERVICE_SMB:-samba}
  18                 CTDB_SERVICE_NMB=${CTDB_SERVICE_NMB:-""}
  19                 ;;
  20         *)
  21                 # Use redhat style as default:
  22                 CTDB_SERVICE_SMB=${CTDB_SERVICE_SMB:-smb}
  23                 CTDB_SERVICE_NMB=${CTDB_SERVICE_NMB:-""}
  24                 ;;
  25 esac
  26
  27 service_name="samba"
  28
  29 loadconfig
  30
  31 ctdb_setup_service_state_dir
  32
  33 service_start ()
  34 {
  35     # make sure samba is not already started
  36     service "$CTDB_SERVICE_SMB" stop > /dev/null 2>&1
  37     if [ -n "$CTDB_SERVICE_NMB" ] ; then
  38         service "$CTDB_SERVICE_NMB" stop > /dev/null 2>&1
  39     fi
  40     killall -0 -q smbd && {
  41         sleep 1
  42         # make absolutely sure samba is dead
  43         killall -q -9 smbd
  44     }
  45     killall -0 -q nmbd && {
  46         sleep 1
  47         # make absolutely sure samba is dead
  48         killall -q -9 nmbd
  49     }
  50
  51     # start Samba service. Start it reniced, as under very heavy load
  52     # the number of smbd processes will mean that it leaves few cycles
  53     # for anything else
  54     net serverid wipe
  55
  56     if [ -n "$CTDB_SERVICE_NMB" ] ; then
  57         nice_service "$CTDB_SERVICE_NMB" start || die "Failed to start nmbd"
  58     fi
  59
  60     nice_service "$CTDB_SERVICE_SMB" start || die "Failed to start samba"
  61 }
  62
  63 service_stop ()
  64 {
  65     service "$CTDB_SERVICE_SMB" stop
  66     if [ -n "$CTDB_SERVICE_NMB" ] ; then
  67         service "$CTDB_SERVICE_NMB" stop
  68     fi
  69 }
  70
  71 ######################################################################
  72 # Show the testparm output using a cached smb.conf to avoid delays due
  73 # to registry access.
  74
  75 smbconf_cache="$service_state_dir/smb.conf.cache"
  76
  77 testparm_foreground_update ()
  78 {
  79     _timeout="$1"
  80
  81     if ! _out=$(timeout $_timeout testparm -v -s 2>/dev/null) ; then
  82         if [ -f "$smbconf_cache" ] ; then
  83             echo "WARNING: smb.conf cache update failed - using old cache file"
  84             return 1
  85         else
  86             die "ERROR: smb.conf cache create failed"
  87         fi
  88     fi
  89
  90     _tmpfile="${smbconf_cache}.$$"
  91     # Patterns to exclude...
  92     pat='^[[:space:]]+(registry[[:space:]]+shares|include|copy|winbind[[:space:]]+separator)[[:space:]]+='
  93     echo "$_out" | grep -Ev "$pat" >"$_tmpfile"
  94     mv "$_tmpfile" "$smbconf_cache" # atomic
  95
  96     return 0
  97 }
  98
  99 testparm_background_update ()
 100 {
 101     _timeout="$1"
 102
 103     testparm_foreground_update $_timeout >/dev/null 2>&1 </dev/null &
 104 }
 105
 106 testparm_cat ()
 107 {
 108     testparm -s "$smbconf_cache" "$@" 2>/dev/null
 109 }
 110
 111 list_samba_shares ()
 112 {
 113     testparm_cat |
 114     sed -n -e 's@^[[:space:]]*path[[:space:]]*=[[:space:]]@@p' |
 115     sed -e 's/"//g'
 116 }
 117
 118 list_samba_ports ()
 119 {
 120     testparm_cat --parameter-name="smb ports" |
 121     sed -e 's@,@ @g'
 122 }
 123
 124 ###########################
 125
 126 ctdb_start_stop_service
 127
 128 is_ctdb_managed_service || exit 0
 129
 130 ###########################
 131
 132 case "$1" in
 133      startup)
 134         ctdb_service_start
 135         ;;
 136
 137      shutdown)
 138         ctdb_service_stop
 139         ;;
 140
 141      monitor)
 142         testparm_foreground_update 10
 143         ret=$?
 144
 145         smb_ports="$CTDB_SAMBA_CHECK_PORTS"
 146         if [ -z "$smb_ports" ] ; then
 147             smb_ports=$(list_samba_ports)
 148             [ -n "$smb_ports" ] || die "Failed to set smb ports"
 149         fi
 150         ctdb_check_tcp_ports $smb_ports || exit $?
 151
 152         if [ "$CTDB_SAMBA_SKIP_SHARE_CHECK" != "yes" ] ; then
 153             list_samba_shares | ctdb_check_directories || exit $?
 154         fi
 155
 156         if [ $ret -ne 0 ] ; then
 157             testparm_background_update 10
 158         fi
 159         ;;
 160
 161     *)
 162         ctdb_standard_event_handler "$@"
 163         ;;
 164 esac
 165
 166 exit 0