107 lines
3.7 KiB
C
107 lines
3.7 KiB
C
/****************************************************************************
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* libs/libc/spawn/lib_psfa_addopen.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdlib.h>
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#include <string.h>
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#include <spawn.h>
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#include <assert.h>
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#include <errno.h>
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#include <nuttx/spawn.h>
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#include "libc.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: posix_spawn_file_actions_addopen
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*
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* Description:
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* The posix_spawn_file_actions_addopen() function adds an open operation
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* to the list of operations associated with the object referenced by
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* file_actions, for subsequent use in a call to posix_spawn() or
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* posix_spawnp(). The descriptor referred to by fd is opened using
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* the path, oflag, and mode arguments as if open() had been called on it
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* prior to the new child process starting execution. The string path is
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* copied by the posix_spawn_file_actions_addopen() function during this
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* process, so storage need not be persistent in the caller.
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*
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* Input Parameters:
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* file_actions - The posix_spawn_file_actions_t to append the action.
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* fd - The file descriptor to be opened.
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* path - The path to be opened.
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* oflags - Open flags
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* mode - File creation mode
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*
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* Returned Value:
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* On success, these functions return 0; on failure they return an error
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* number from <errno.h>.
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*
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****************************************************************************/
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int posix_spawn_file_actions_addopen(
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FAR posix_spawn_file_actions_t *file_actions,
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int fd, FAR const char *path, int oflags,
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mode_t mode)
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{
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FAR struct spawn_open_file_action_s *entry;
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size_t len;
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size_t alloc;
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DEBUGASSERT(file_actions && path && fd >= 0);
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/* Get the size of the action including storage for the path plus its NUL
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* terminating character.
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*/
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len = strlen(path);
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alloc = SIZEOF_OPEN_FILE_ACTION_S(len);
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/* Allocate the action list entry of this size */
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entry = (FAR struct spawn_open_file_action_s *)lib_zalloc(alloc);
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if (!entry)
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{
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return ENOMEM;
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}
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/* Initialize the file action entry */
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entry->action = SPAWN_FILE_ACTION_OPEN;
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entry->fd = fd;
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entry->oflags = oflags;
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entry->mode = mode;
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strlcpy(entry->path, path, len + 1);
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/* And add it to the file action list */
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add_file_action(file_actions,
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(FAR struct spawn_general_file_action_s *)entry);
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return OK;
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}
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