spec: Document name to id directives

1 files changed, 56 insertions, 9 deletions

diff --git a/spec/if/rtems/tasks/ident.yml b/spec/if/rtems/tasks/ident.yml
index 9405b54e..f7f22743 100644
--- a/spec/if/rtems/tasks/ident.yml
+++ b/spec/if/rtems/tasks/ident.yml
@@ -1,8 +1,9 @@
 SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
-brief: '%'
+brief: |
+  Identifies a task object by the specified object name.
 copyrights:
 - Copyright (C) 2020 embedded brains GmbH (http://www.embedded-brains.de)
-- Copyright (C) 1988, 2017 On-Line Applications Research Corporation (OAR)
+- Copyright (C) 1988, 2008 On-Line Applications Research Corporation (OAR)
 definition:
   default:
     body: null
@@ -12,7 +13,24 @@ definition:
     - ${../types/id:/name} *${.:/params[2]/name}
     return: ${../status/code:/name}
   variants: []
-description: null
+description: |
+  This directive obtains the task identifier associated with the task name
+  specified in ``${.:/params[0]/name}``.
+
+  A task may obtain its own identifier by specifying ${self-define:/name} for
+  the name.
+
+  The node to search is specified in ``${.:/params[1]/name}``.  It shall be
+
+  * a valid node number,
+
+  * the constant ${../object/search-all-nodes:/name} to search in all nodes,
+
+  * the constant ${../object/search-local-node:/name} to search in the local
+    node only, or
+
+  * the constant ${../object/search-other-nodes:/name} to search in all nodes
+    except the local node.
 enabled-by: true
 interface-type: function
 links:
@@ -21,18 +39,47 @@ links:
 - role: interface-ingroup
   uid: /groups/api/classic/tasks
 name: rtems_task_ident
-notes: null
+notes: |
+  If the task name is not unique, then the task identifier will match the first
+  task with that name in the search order.  However, this task identifier is
+  not guaranteed to correspond to the desired task.  The task identifier is
+  used with other task related directives to access the task.
+
+  If node is ${../object/search-all-nodes:/name}, all nodes are searched with
+  the local node being searched first.  All other nodes are searched with the
+  lowest numbered node searched first.
+
+  If node is a valid node number which does not represent the local node, then
+  only the tasks exported by the designated node are searched.
+
+  This directive does not generate activity on remote nodes.  It accesses only
+  the local copy of the global object table.
 params:
-- description: '%'
+- description: is the object name to look up.
   dir: null
   name: name
-- description: '%'
+- description: is the node or node set to search for a matching object.
   dir: null
   name: node
-- description: '%'
-  dir: null
+- description: |
+    is the pointer to an object identifier variable.  The object identifier of
+    an object with the specified name will be stored in this variable, in case
+    of a successful operation.
+  dir: out
   name: id
 return:
   return: null
-  return-values: []
+  return-values:
+  - description: |
+      The requested operation was successful.
+    value: ${../status/successful:/name}
+  - description: |
+      The ${.:/params[2]/name} parameter was ${/if/c/null:/name}.
+    value: ${../status/invalid-address:/name}
+  - description: |
+      There was no object with the specified name on the specified nodes.
+    value: ${../status/invalid-name:/name}
+  - description: |
+      In multiprocessing configurations, the specified node was invalid.
+    value: ${../status/invalid-node:/name}
 type: interface