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