net/tgt/files/etc/init.d/tgt

   1 #!/bin/sh /etc/rc.common
   2 START=91
   3 STOP=10
   4
   5 EXTRA_COMMANDS="show"
   6 EXTRA_HELP="    show    Show current configuration of tgtd"
   7
   8 NAME=tgt
   9 PROG=/usr/sbin/tgtd
  10 USE_PROCD=1
  11
  12 tgtadm="/usr/sbin/tgtadm --lld iscsi"
  13 logger="logger -p daemon.err -s -t $NAME"
  14
  15 validate_lun_section() {
  16         uci_validate_section tgt lun $1 \
  17                 'device:or(file, device)' \
  18                 'type:or("disk", "cd", "pt"):disk' \
  19                 'bstype:or("rdwr", "aio", "sg"):rdwr' \
  20                 'sync:bool:0' \
  21                 'direct:bool:0' \
  22                 'blocksize:uinteger' \
  23                 'mode_page:string' \
  24                 'product_id:string' \
  25                 'product_rev:string' \
  26                 'readonly:bool:0' \
  27                 'removable:bool' \
  28                 'scsi_id:string' \
  29                 'scsi_sn:string' \
  30                 'sense_format:range(0, 1)' \
  31                 'vendor_id:string'
  32 }
  33
  34 handle_lun() {
  35         local tgt_lun=$1
  36         local tgtid=$2
  37         local readonly device type bstype sync direct
  38         local my_tgtid=${tgt_lun%_*}
  39         local lun=${tgt_lun#*_}
  40
  41         [ $my_tgtid -eq $tgtid ] || return 0
  42
  43         validate_lun_section $tgt_lun || {
  44                 $logger "Validation failed for LUN $tgt_lun"
  45                 return 1
  46         }
  47         [ "$device" ] || {
  48                 $logger "Device is required for target $tgt_lun"
  49                 return 1
  50         }
  51
  52         if [ $sync -ne 0 -o $direct -ne 0 ]; then
  53                 local bsoflags
  54                 [ $sync -ne 0 ] && bsoflags="sync"
  55                 [ $direct -ne 0 ] && bsoflags="direct"
  56                 [ $sync -ne 0 -a $direct -ne 0 ] && bsoflags="sync:direct"
  57                 bsoflags="--bsoflags $bsoflags"
  58         fi
  59
  60         blocksize=${blocksize+--blocksize=$blocksize}
  61         local params='' i
  62         for i in mode_page product_id product_rev readonly removable scsi_id scsi_sn sense_format vendor_id; do
  63                 eval params=\${$i+$i=\$$i,}\$params
  64         done
  65
  66         local _tgtadm="$tgtadm --mode logicalunit --tid $tgtid --lun $lun"
  67         $_tgtadm --op new --backing-store $device --device-type $type --bstype $bstype --bstype $bstype $bsoflags $blocksize || {
  68                 $logger "Failed to create lun $tgt_lun"
  69                 return 1
  70         }
  71         $_tgtadm --op update --param $params || {
  72                 $logger "Failed to update lun $tgt_lun"
  73                 return 1
  74         }
  75 }
  76
  77 validate_account_section () {
  78         uci_validate_section tgt account $1 \
  79                 'target:list(uinteger)' \
  80                 'user:string' \
  81                 'password:string' \
  82                 'outgoing:bool:0'
  83 }
  84
  85 handle_account() {
  86         local _tgtadm="$tgtadm --mode account"
  87         local user password target outgoing
  88
  89         validate_account_section $1 || {
  90                 $logger "Validation failed for account ${user:-$1}"
  91                 return 1
  92         }
  93         [ "$user" ] || {
  94                 $logger "User is required for account $1. Run 'uci show tgt.$1' and check options"
  95                 return 1
  96         }
  97         [ "$target" ] || {
  98                 $logger "Target is required for account $user"
  99                 return 1
 100         }
 101         [ "$password" ] || {
 102                 $logger "Password is required for account $user"
 103                 return 1
 104         }
 105         $_tgtadm --op new --user "$user" --password "$password" || {
 106                 $logger "Failed to create user $username"
 107                 return 1
 108         }
 109 }
 110
 111 bind_account_to_target() {
 112         local _tgtadm="$tgtadm --mode account"
 113         local tgtid=$2 user password outgoing
 114
 115         validate_account_section $1 || {
 116                 $logger "Validation failed for account ${user:-$1}"
 117                 return 1
 118         }
 119
 120         [ "$outgoing" -ne 0 ] && outgoing=--outgoing || outgoing=""
 121         local t
 122         for t in $target; do
 123                 [ "$t" -eq "$tgtid" ] && {
 124                         $_tgtadm --op bind --tid $tgtid --user "$user" $outgoing || {
 125                                 $logger "Failed to bind user $username to target $tgtid"
 126                                 return 1
 127                         }
 128                 }
 129         done
 130         return 0
 131 }
 132
 133 validate_target_section() {
 134         uci_validate_section tgt target $1 \
 135                 'name:string:iqn.2012-06.org.openwrt' \
 136                 'allow_address:list(string):ALL' \
 137                 'allow_name:list(string)'
 138 }
 139
 140 handle_target() {
 141         local tgtid=$1
 142         local _tgtadm="$tgtadm --mode target"
 143         local name allow
 144
 145         [ $tgtid -ge 0 ] || return 1
 146         validate_target_section $tgtid || {
 147                 $logger "Validation failed for target $tgtid"
 148                 return 1
 149         }
 150         $_tgtadm --op new --tid $tgtid --targetname $name || {
 151                 $logger "Failed to create target $tgtid"
 152                 return 1
 153         }
 154         local i
 155         for i in $allow_address; do
 156                 $_tgtadm --op bind --tid $tgtid --initiator-address $i || {
 157                         $logger "Failed to set allow $i to connect to target $tgtid"
 158                         return 1
 159                 }
 160         done
 161         for i in $allow_name; do
 162                 $_tgtadm --op bind --tid $tgtid --initiator-name $i || {
 163                         $logger "Failed to set allow $i to connect to target $tgtid"
 164                         return 1
 165                 }
 166         done
 167         config_foreach handle_lun lun $tgtid || return 1
 168         config_foreach bind_account_to_target account $tgtid || return 1
 169 }
 170
 171 configure() {
 172         config_load $NAME
 173         $tgtadm --mode sys --op update --name State -v offline || {
 174                 $logger "Failed to set system state to Offline"
 175                 return 1
 176         }
 177         config_foreach handle_account account || return 1
 178         config_foreach handle_target target || return 1
 179         $tgtadm --mode sys --op update --name State -v ready || {
 180                 $logger "Failed to set system state to Ready"
 181                 return 1
 182         }
 183         return 0
 184 }
 185
 186 validate_tgt_section() {
 187         uci_validate_section tgt options $1 \
 188                 'iothreads:uinteger' \
 189                 'portal:list(string)' \
 190                 'nop_interval:uinteger' \
 191                 'nop_count:uinteger'
 192 }
 193
 194 start_service() {
 195         local iothreads portal nop_interval nop_count
 196         validate_tgt_section tgt || {
 197                 $logger "Validation failed for tgt options"
 198                 return 1
 199         }
 200         procd_open_instance
 201         procd_set_param command $PROG -f
 202         [ "$iothreads" ] && procd_append_param command -t $iothreads
 203         [ "${portal}${nop_interval}${nop_count}" ] && {
 204                 local iscsi="" i
 205                 for i in nop_interval nop_count; do
 206                         eval iscsi=\${$i+$i=\$$i,}\$iscsi
 207                 done
 208                 for i in $portal; do
 209                         iscsi="portal=$i,$iscsi"
 210                 done
 211                 procd_append_param command --iscsi $iscsi
 212         }
 213         procd_set_param respawn
 214         procd_close_instance
 215         logger -p daemon.info -t $NAME -s "Configuration will be loaded in seconds"
 216         ( sleep 5; configure || { stop_service; exit 1; } ) &
 217 }
 218
 219 stop_service() {
 220         $tgtadm --mode sys --op update --name State -v offline || {
 221                 $logger "Failed to set system state to Offline"
 222                 return 1
 223         }
 224         $tgtadm --mode target --op show \
 225                 | awk '$1 == "Target" {sub(/:/,"",$2); print $2}' \
 226                 | xargs -r -n1 $tgtadm --mode target --op delete --force --tid
 227         $tgtadm --mode sys --op delete
 228 }
 229
 230 reload_service() {
 231         stop_service
 232         start_service
 233 }
 234
 235 show() {
 236         $tgtadm --mode target --op show
 237 }