121 lines
4.5 KiB
C
121 lines
4.5 KiB
C
/****************************************************************************
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* libs/libc/string/lib_psfa_addopen.c
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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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(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 &&
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fd >= 0 && fd < CONFIG_NFILE_DESCRIPTORS);
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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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strncpy(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, (FAR struct spawn_general_file_action_s *)entry);
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return OK;
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}
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