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diff --git a/nuttx/sched/sem_unlink.c b/nuttx/sched/sem_unlink.c
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-/****************************************************************************
- * sched/sem_unlink.c
- *
- * Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-
-#include <stdbool.h>
-#include <semaphore.h>
-#include <sched.h>
-#include <queue.h>
-
-#include "os_internal.h"
-#include "sem_internal.h"
-
-/****************************************************************************
- * Pre-processor Definitions
- ****************************************************************************/
-
-/****************************************************************************
- * Private Type Declarations
- ****************************************************************************/
-
-/****************************************************************************
- * Global Variables
- ****************************************************************************/
-
-/****************************************************************************
- * Private Variables
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: sem_unlink
- *
- * Description:
- * This function removes the semaphore named by the input parameter 'name.'
- * If the semaphore named by 'name' is currently referenced by other task,
- * the sem_unlink() will have no effect on the state of the semaphore. If
- * one or more processes have the semaphore open when sem_unlink() is
- * called, destruction of the semaphore will be postponed until all
- * references to the semaphore have been destroyed by calls of sem_close().
- *
- * Parameters:
- * name - Semaphore name
- *
- * Return Value:
- * 0 (OK), or -1 (ERROR) if unsuccessful.
- *
- * Assumptions:
- *
- ****************************************************************************/
-
-int sem_unlink(FAR const char *name)
-{
- FAR nsem_t *psem;
- int ret = ERROR;
-
- /* Verify the input values */
-
- if (name)
- {
- sched_lock();
-
- /* Find the named semaphore */
-
- psem = sem_findnamed(name);
-
- /* Check if the semaphore was found */
-
- if (psem)
- {
- /* If the named semaphore was found and if there are no
- * connects to it, then deallocate it
- */
-
- if (!psem->nconnect)
- {
- dq_rem((FAR dq_entry_t*)psem, &g_nsems);
- sched_free(psem);
- }
-
- /* If one or more process still has the semaphore open,
- * then just mark it as unlinked. The unlinked semaphore will
- * be deleted when the final process closes the semaphore.
- */
-
- else
- {
- psem->unlinked = true;
- }
- ret = OK;
- }
-
- sched_unlock();
- }
-
- return ret;
-}