introduce "device confirmed" when device is plugged

tcl/seacom.tcl

@@ -1040,6 +1040,7 @@ proc samenv args {
       set inside_samenv 0
     }
     set device_name none
+    device makeitem confirmed ""
     restore killerr
     save_samenv none
     return "samenv = none"
@@ -1150,6 +1151,10 @@ proc samenv args {
   default load
 
   device name $name
+  if {$name ne [silent 0 hval /device/confirmed]} {
+    device makeitem confirmed ""
+  }
+
   obj_list savefile ""
   if { [string length $objects_created] != 0 } {
     clientput "create: $objects_created"
@@ -1706,6 +1711,7 @@ proc autodeviceCron {} {
     }
     device action ""
   } elseif {$act eq "rebuild"} {
+    # rebuild SECoP objects after description change
     device action ""
     set objdict [dict create]
     foreach obj [obj_list items] {
@@ -1756,24 +1762,33 @@ clientput "CONFIG $device/$stick/$addons"
         set unplugged_device [result device name]
         if {$unplugged_device ne "none"} {
           clientput "unplugged $unplugged_device"
+          device makeitem confirmed ""
           set change_device_to_none [expr $now + 60]
         }
       } else {
         clientput "none $act"
+        device makeitem confirmed none
         samenv -q none
       }
     } elseif {$act eq "plugged" && $new eq [result device name]} {
       clientput "$new plugged, no change"
+      device makeitem confirmed $new
     } else {
-      clientput "$new $act"
+      if {[result device name] ne "none" && $act eq "plugged"} {
+        clientlog "unplugged time too short [result device name] -> $new"
+      } else {
+        device makeitem confirmed $new
+        clientput "LOAD $new $act"
         catch {samenv -q $new} msg
         clientput $msg
       }
+    }
     device action ""
   } else {
     set c2n [silent 0 set change_device_to_none]
     if {$c2n != 0 && $now > $c2n} {
       set change_device_to_none 0
+      device makeitem confirmed none
       samenv -q none
     }
     if {![device exists force_status_save]} {

tcl/seainit.tcl

@@ -143,7 +143,7 @@ if {$instrument eq "seaman"} {
 restore $statusfile
 backup
 
-array_init device name unknown changetime 0 stick_menu {} stick_name {} newdevice {} olddevice {} rack {}
+array_init device name unknown changetime 0 stick_menu {} stick_name {} newdevice {} olddevice {} rack {} confirmed {}
 array_init device frappy_u_config 0 frappy_u_stick 0 frappy_u_addon 0 frappy_main {} frappy_stick {} frappy_addons {}
 
 connect_sics

tcl/startup/frappy.tcl

@@ -177,10 +177,12 @@ proc get_param_values {hp} {
 }
 
 proc check_or_do {doit service cfgs} {
+  # result: 1: no change needed, 0: change needed, 2: failure
   set result 1
   set config ""
   set stick ""
   set addons [list]
+
   foreach cfg $cfgs {
     if {[regexp {(.*)\.addon} $cfg -> addon]} {
       if {![addon_list exists $addon]} {
@@ -195,10 +197,20 @@ proc check_or_do {doit service cfgs} {
     device makeitem frappy_u_config 1
     if {$config ne [hval /device/name]} {
       if {$doit} {
+        if {[hval /device/confirmed] eq [hval /device/name]} {
+          set msg "do not allow frappy to change from [hval /device/name] to $config"
+          clientlog $msg
+          return $msg
+        }
+        clientlog 0
+        clientlog TRANSACTIONFINISHED
         samenv -q $config
       } else {
         device makeitem frappy_u_config 0
       }
+      if {[hval /device/name] == "none"} {
+        return none
+      }
       set result 0
     }
   }
@@ -206,15 +218,22 @@ proc check_or_do {doit service cfgs} {
     device makeitem frappy_u_stick 1
     if {$stick ne [hval /device/stick_name]} {
       if {$doit} {
+        clientlog 0
+        clientlog TRANSACTIONFINISHED
         addon stick $stick
       } else {
         device makeitem frappy_u_stick 0
       }
+      if {[hval /device/name] == "none"} {
+        return nonestick
+      }
       set result 0
     }
   }
   foreach addon $addons {
     if {$doit} {
+      clientlog 0
+      clientlog TRANSACTIONFINISHED
       addon $addon
     } else {
       device makeitem frappy_u_addon 0