mirror of
https://github.com/eclipse-threadx/threadx.git
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114 lines
5.3 KiB
C
114 lines
5.3 KiB
C
/***************************************************************************
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* Copyright (c) 2024 Microsoft Corporation
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*
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* This program and the accompanying materials are made available under the
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* terms of the MIT License which is available at
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* https://opensource.org/licenses/MIT.
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*
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* SPDX-License-Identifier: MIT
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**************************************************************************/
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/**************************************************************************/
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/**************************************************************************/
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/** */
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/** POSIX wrapper for THREADX */
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/** */
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/** */
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/** */
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/**************************************************************************/
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/**************************************************************************/
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/* Include necessary system files. */
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#include "tx_api.h" /* Threadx API */
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#include "pthread.h" /* Posix API */
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#include "px_int.h" /* Posix helper functions */
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/**************************************************************************/
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/* */
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/* FUNCTION RELEASE */
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/* */
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/* sem_unlink PORTABLE C */
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/* 6.2.0 */
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/* AUTHOR */
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/* */
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/* William E. Lamie, Microsoft Corporation */
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/* */
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/* DESCRIPTION */
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/* */
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/* This routine removes the string from the semaphore name table ,and */
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/* marks the corresponding semaphore for destruction. */
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/* */
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/* INPUT */
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/* */
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/* name Semaphore name. */
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/* */
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/* OUTPUT */
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/* */
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/* OK If successful */
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/* ERROR IF fails */
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/* */
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/* CALLS */
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/* */
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/* posix_find_sem checks the name of semaphore with the names */
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/* of the already created semaphore. */
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/* posix_sem_reset Resets the semaphore structure */
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/* */
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/* CALLED BY */
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/* */
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/* Application Code */
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/* */
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/* RELEASE HISTORY */
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/* */
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/* DATE NAME DESCRIPTION */
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/* */
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/* 06-02-2021 William E. Lamie Initial Version 6.1.7 */
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/* 10-31-2022 Scott Larson Remove double parenthesis, */
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/* resulting in version 6.2.0 */
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/* */
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/**************************************************************************/
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INT sem_unlink(const CHAR * name)
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{
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struct POSIX_SEMAPHORE_STRUCT * sem;
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ULONG len;
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/* Checking for the invalid length. */
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len = strlen(name);
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if(len > SEM_NAME_MAX)
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{
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/* Return appropriate error. */
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posix_errno=ENAMETOOLONG;
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posix_set_pthread_errno(ENAMETOOLONG);
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/* Return error. */
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return(ERROR);
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}
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if(!(sem=posix_find_sem(name)))
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{
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/* Set error in global variable. */
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posix_errno = ENOENT;
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posix_set_pthread_errno(ENOENT);
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/* Return Error. */
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return(ERROR);
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}
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if(sem)
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sem->unlink_flag =TX_TRUE;
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/* Check for the count. */
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if(sem->count == 0)
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{
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posix_sem_reset(sem );
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sem = NULL;
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}
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return(OK);
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}
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