incubator-nuttx/libs/libc/spawn/lib_psfa_addaction.c

78 lines
2.5 KiB
C

/****************************************************************************
* libs/libc/spawn/lib_psfa_addaction.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 <nuttx/config.h>
#include <spawn.h>
#include <nuttx/spawn.h>
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: add_file_action
*
* Description:
* Add the file action to the end for the file action list.
*
* Input Parameters:
* file_actions - The head of the file action list.
* entry - The file action to be added
*
* Returned Value:
* None
*
****************************************************************************/
void add_file_action(FAR posix_spawn_file_actions_t *file_actions,
FAR struct spawn_general_file_action_s *entry)
{
FAR struct spawn_general_file_action_s *prev;
FAR struct spawn_general_file_action_s *next;
/* Find the end of the list */
for (prev = NULL,
next = (FAR struct spawn_general_file_action_s *)*file_actions;
next;
prev = next, next = next->flink);
/* Here next is NULL and prev points to the last entry in the list (or
* is NULL if the list is empty).
*/
if (prev)
{
prev->flink = entry;
}
else
{
*file_actions = (posix_spawn_file_actions_t)entry;
}
entry->flink = NULL;
}