score: Add _Objects_Get_by_name()

Replace _Objects_Name_to_id_string() with _Objects_Get_by_name() since
all users of this function are interested in the object itself and not
the identifier.

Use the object allocator lock to protect the search.

Update #2555.

3 files changed, 33 insertions, 39 deletions

diff --git a/cpukit/posix/include/rtems/posix/mqueueimpl.h b/cpukit/posix/include/rtems/posix/mqueueimpl.h
index 6646fa2c65..cf0f76af32 100644
--- a/cpukit/posix/include/rtems/posix/mqueueimpl.h
+++ b/cpukit/posix/include/rtems/posix/mqueueimpl.h
@@ -246,17 +246,20 @@ _POSIX_Message_queue_Get_fd_interrupt_disable(
     lock_context
   );
 }
- 
-/**
- * @see _POSIX_Name_to_id().
- */
-RTEMS_INLINE_ROUTINE int _POSIX_Message_queue_Name_to_id(
-  const char          *name,
-  Objects_Id          *id,
-  size_t              *len
+
+RTEMS_INLINE_ROUTINE POSIX_Message_queue_Control *
+_POSIX_Message_queue_Get_by_name(
+  const char                *name,
+  size_t                    *name_length_p,
+  Objects_Get_by_name_error *error
 )
 {
-  return _POSIX_Name_to_id( &_POSIX_Message_queue_Information, name, id, len );
+  return (POSIX_Message_queue_Control *) _Objects_Get_by_name(
+    &_POSIX_Message_queue_Information,
+    name,
+    name_length_p,
+    error
+  );
 }
 
 #ifdef __cplusplus
diff --git a/cpukit/posix/include/rtems/posix/posixapi.h b/cpukit/posix/include/rtems/posix/posixapi.h
index 8fee7a4f32..0348e28e16 100644
--- a/cpukit/posix/include/rtems/posix/posixapi.h
+++ b/cpukit/posix/include/rtems/posix/posixapi.h
@@ -20,6 +20,7 @@
 #define _RTEMS_POSIX_POSIXAPI_H
 
 #include <rtems/config.h>
+#include <rtems/score/assert.h>
 #include <rtems/score/objectimpl.h>
 
 /**
@@ -48,27 +49,15 @@ typedef enum {
  */
 void _POSIX_Fatal_error( POSIX_Fatal_domain domain, int eno );
 
-/**
- * @brief Queries the object identifier @a id for a @a name.
- *
- * @param[in] information Object information.
- * @param[in] name Zero terminated name string to look up.
- * @param[out] id Pointer for identifier.  The pointer must be valid.
- * @param[out] len Pointer for string length.  The pointer must be valid.
- *
- * @retval 0 Successful operation.
- * @retval EINVAL The @a name pointer is @c NULL or the @a name string has
- * zero length.
- * @retval ENAMETOOLONG The @a name string length is greater than or equal to
- * @c NAME_MAX.
- * @retval ENOENT Found no corresponding identifier.
- */
-int _POSIX_Name_to_id(
-  Objects_Information *information,
-  const char          *name,
-  Objects_Id          *id,
-  size_t              *len
-);
+extern const int _POSIX_Get_by_name_error_table[ 3 ];
+
+RTEMS_INLINE_ROUTINE int _POSIX_Get_by_name_error(
+  Objects_Get_by_name_error error
+)
+{
+  _Assert( (size_t) error < RTEMS_ARRAY_SIZE( _POSIX_Get_by_name_error_table ) );
+  return _POSIX_Get_by_name_error_table[ error ];
+}
 
 /** @} */
 
diff --git a/cpukit/posix/include/rtems/posix/semaphoreimpl.h b/cpukit/posix/include/rtems/posix/semaphoreimpl.h
index fe5ee44034..8608e6f33d 100644
--- a/cpukit/posix/include/rtems/posix/semaphoreimpl.h
+++ b/cpukit/posix/include/rtems/posix/semaphoreimpl.h
@@ -163,17 +163,19 @@ RTEMS_INLINE_ROUTINE void _POSIX_Semaphore_Namespace_remove (
   _Objects_Namespace_remove( 
     &_POSIX_Semaphore_Information, &the_semaphore->Object );
 }
- 
-/**
- * @see _POSIX_Name_to_id().
- */
-RTEMS_INLINE_ROUTINE int _POSIX_Semaphore_Name_to_id(
-  const char *name,
-  Objects_Id *id,
-  size_t     *len
+
+RTEMS_INLINE_ROUTINE POSIX_Semaphore_Control *_POSIX_Semaphore_Get_by_name(
+  const char                *name,
+  size_t                    *name_length_p,
+  Objects_Get_by_name_error *error
 )
 {
-  return _POSIX_Name_to_id( &_POSIX_Semaphore_Information, name, id, len );
+  return (POSIX_Semaphore_Control *) _Objects_Get_by_name(
+    &_POSIX_Semaphore_Information,
+    name,
+    name_length_p,
+    error
+  );
 }
 
 #ifdef __cplusplus