/**************************************************************************** * libs/libc/semaphore/sem_getprotocol.c * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. The * ASF licenses this file to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance with the * License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the * License for the specific language governing permissions and limitations * under the License. * ****************************************************************************/ /**************************************************************************** * Included Files ****************************************************************************/ #include #include #include /**************************************************************************** * Public Functions ****************************************************************************/ /**************************************************************************** * Name: sem_getprotocol * * Description: * Return the value of the semaphore protocol attribute. * * Input Parameters: * sem - A pointer to the semaphore whose attributes are to be * queried. * protocol - The user provided location in which to store the protocol * value. * * Returned Value: * This function is exposed as a non-standard application interface. It * returns zero (OK). Otherwise, an error code. * ****************************************************************************/ int sem_getprotocol(FAR sem_t *sem, FAR int *protocol) { DEBUGASSERT(sem != NULL && protocol != NULL); #ifdef CONFIG_PRIORITY_INHERITANCE if ((sem->flags & PRIOINHERIT_FLAGS_DISABLE) != 0) { *protocol = SEM_PRIO_NONE; } else { *protocol = SEM_PRIO_INHERIT; } #else *protocol = SEM_PRIO_NONE; #endif return OK; }