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#!/bin/sh /etc/rc.common
START=91
STOP=10
EXTRA_COMMANDS="show"
EXTRA_HELP=" show Show current configuration of tgtd"
NAME=tgt
PROG=/usr/sbin/tgtd
USE_PROCD=1
tgtadm="/usr/sbin/tgtadm --lld iscsi"
logger="logger -p daemon.err -s -t $NAME"
validate_lun_section() {
uci_load_validate tgt lun "$1" "$2" \
'device:or(file, device)' \
'type:or("disk", "cd", "pt"):disk' \
'bstype:or("rdwr", "aio", "sg"):rdwr' \
'sync:bool:0' \
'direct:bool:0' \
'blocksize:uinteger' \
'mode_page:string' \
'product_id:string' \
'product_rev:string' \
'readonly:bool:0' \
'removable:bool' \
'scsi_id:string' \
'scsi_sn:string' \
'sense_format:range(0, 1)' \
'vendor_id:string'
}
handle_lun() {
local tgt_lun=$1
local my_tgtid=${tgt_lun%_*}
local lun=${tgt_lun#*_}
[ $my_tgtid -eq $tgtid ] || return 0
[ "$2" = 0 ] || {
$logger "Validation failed for LUN $tgt_lun"
return 1
}
[ "$device" ] || {
$logger "Device is required for target $tgt_lun"
return 1
}
if [ $sync -ne 0 -o $direct -ne 0 ]; then
local bsoflags
[ $sync -ne 0 ] && bsoflags="sync"
[ $direct -ne 0 ] && bsoflags="direct"
[ $sync -ne 0 -a $direct -ne 0 ] && bsoflags="sync:direct"
bsoflags="--bsoflags $bsoflags"
fi
blocksize=${blocksize+--blocksize=$blocksize}
local params='' i
for i in mode_page product_id product_rev readonly removable scsi_id scsi_sn sense_format vendor_id; do
eval params=\${$i+$i=\$$i,}\$params
done
local _tgtadm="$tgtadm --mode logicalunit --tid $tgtid --lun $lun"
$_tgtadm --op new --backing-store $device --device-type $type --bstype $bstype $bsoflags $blocksize || {
$logger "Failed to create lun $tgt_lun"
return 1
}
$_tgtadm --op update --param $params || {
$logger "Failed to update lun $tgt_lun"
return 1
}
}
validate_account_section () {
uci_load_validate tgt account "$1" "$2" \
'target:list(uinteger)' \
'user:string' \
'password:string' \
'outgoing:bool:0'
}
handle_account() {
local _tgtadm="$tgtadm --mode account"
[ "$2" = 0 ] || {
$logger "Validation failed for account ${user:-$1}"
return 1
}
[ "$user" ] || {
$logger "User is required for account $1. Run 'uci show tgt.$1' and check options"
return 1
}
[ "$target" ] || {
$logger "Target is required for account $user"
return 1
}
[ "$password" ] || {
$logger "Password is required for account $user"
return 1
}
$_tgtadm --op new --user "$user" --password "$password" || {
$logger "Failed to create user $username"
return 1
}
}
bind_account_to_target() {
local _tgtadm="$tgtadm --mode account"
[ "$2" = 0 ] || {
$logger "Validation failed for account ${user:-$1}"
return 1
}
[ "$outgoing" -ne 0 ] && outgoing=--outgoing || outgoing=""
local t
for t in $target; do
[ "$t" -eq "$tgtid" ] && {
$_tgtadm --op bind --tid $tgtid --user "$user" $outgoing || {
$logger "Failed to bind user $username to target $tgtid"
return 1
}
}
done
return 0
}
validate_target_section() {
uci_load_validate tgt target "$1" "$2" \
'name:string:iqn.2012-06.org.openwrt' \
'allow_address:list(string):ALL' \
'allow_name:list(string)'
}
handle_target() {
local tgtid=$1
local _tgtadm="$tgtadm --mode target"
[ $tgtid -ge 0 ] || return 1
[ "$2" = 0 ] || {
$logger "Validation failed for target $tgtid"
return 1
}
$_tgtadm --op new --tid $tgtid --targetname $name || {
$logger "Failed to create target $tgtid"
return 1
}
local i
for i in $allow_address; do
$_tgtadm --op bind --tid $tgtid --initiator-address $i || {
$logger "Failed to set allow $i to connect to target $tgtid"
return 1
}
done
for i in $allow_name; do
$_tgtadm --op bind --tid $tgtid --initiator-name $i || {
$logger "Failed to set allow $i to connect to target $tgtid"
return 1
}
done
config_foreach validate_lun_section lun handle_lun || return 1
config_foreach validate_account_section account bind_account_to_target || return 1
}
configure() {
config_load $NAME
$tgtadm --mode sys --op update --name State -v offline || {
$logger "Failed to set system state to Offline"
return 1
}
config_foreach validate_account_section account handle_account || return 1
config_foreach validate_target_section target handle_target || return 1
$tgtadm --mode sys --op update --name State -v ready || {
$logger "Failed to set system state to Ready"
return 1
}
return 0
}
validate_tgt_section() {
uci_load_validate tgt options "$1" "$2" \
'iothreads:uinteger' \
'portal:list(string)' \
'nop_interval:uinteger' \
'nop_count:uinteger'
}
start_tgt_instance() {
[ "$2" = 0 ] || {
$logger "Validation failed for tgt options"
return 1
}
procd_open_instance
procd_set_param command $PROG -f
[ "$iothreads" ] && procd_append_param command -t $iothreads
[ "$portal$nop_interval$nop_count" ] && {
local iscsi="" i
for i in nop_interval nop_count; do
eval iscsi=\${$i+$i=\$$i,}\$iscsi
done
for i in $portal; do
iscsi="portal=$i,$iscsi"
done
procd_append_param command --iscsi $iscsi
}
procd_set_param respawn
procd_close_instance
logger -p daemon.info -t $NAME -s "Configuration will be loaded in seconds"
( sleep 5; configure || { stop_service; exit 1; } ) &
}
start_service() {
validate_tgt_section tgt start_tgt_instance
}
stop_service() {
$tgtadm --mode sys --op update --name State -v offline || {
$logger "Failed to set system state to Offline"
return 1
}
$tgtadm --mode target --op show \
| awk '$1 == "Target" {sub(/:/,"",$2); print $2}' \
| xargs -r -n1 $tgtadm --mode target --op delete --force --tid
$tgtadm --mode sys --op delete
procd_kill tgt
}
reload_service() {
stop_service
start_service
}
service_triggers() {
procd_add_reload_trigger "tgt"
procd_open_validate
validate_tgt_section
validate_account_section
validate_target_section
validate_lun_section
procd_close_validate
}
show() {
$tgtadm --mode target --op show
}