Copyright (c) 2000-2007 Apple Inc. All rights reserved.

@APPLE_OSREFERENCE_LICENSE_HEADER_START@

This file contains Original Code and/or Modifications of Original Code
as defined in and that are subject to the Apple Public Source License
Version 2.0 (the 'License'). You may not use this file except in
compliance with the License. The rights granted to you under the License
may not be used to create, or enable the creation or redistribution of,
unlawful or unlicensed copies of an Apple operating system, or to
circumvent, violate, or enable the circumvention or violation of, any
terms of an Apple operating system software license agreement.

Please obtain a copy of the License at
http://www.opensource.apple.com/apsl/ and read it before using this file.

The Original Code and all software distributed under the License are
distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
Please see the License for the specific language governing rights and
limitations under the License.

@APPLE_OSREFERENCE_LICENSE_HEADER_END@

@(#)posix_spawn_file_actions_addclose.3
. .Dd August 22, 2007 .Dt POSIX_SPAWN_FILE_ACTIONS_ADDCLOSE 3 .Os "Mac OS X" .Sh NAME .Nm posix_spawn_file_actions_addclose .Nm posix_spawn_file_actions_addopen .Nd add open or close actions to a .Em posix_spawn_file_actions_t .Sh SYNOPSIS .Fd #include <spawn.h> .Ft int .Fo posix_spawn_file_actions_addclose .Fa "posix_spawn_file_actions_t *file_actions" .Fa "int filedes" .Fc .Ft int .Fo posix_spawn_file_actions_addopen .Fa "posix_spawn_file_actions_t *restrict file_actions" .Fa "int filedes" .Fa "const char *restrict path" .Fa "int oflag" .Fa "mode_t mode" .Fc .Ft int .Fo posix_spawn_file_actions_adddup2 .Fa "posix_spawn_file_actions_t *file_actions" .Fa "int filedes" .Fa "int newfiledes" .Fc .Sh DESCRIPTION The .Fn posix_spawn_file_actions_addclose function adds a close operation to the list of operations associated with the object referenced by .Em file_actions , for subsequent use in a call to .Xr posix_spawn 2 or .Xr posix_spawnp 2 . The descriptor referred to by .Em filedes is closed as if .Fn close had been called on it prior to the new child process starting execution.

p The .Fn posix_spawn_file_actions_addopen function adds an open operation to the list of operations associated with the object referenced by .Em file_actions , for subsequent use in a call to .Xr posix_spawn 2 or .Xr posix_spawnp 2 . The descriptor referred to by .Em filedes is opened using the .Em path , .Em oflag , and .Em mode arguments as if .Fn open had been called on it prior to the new child process starting execution. The string .Em path is copied by the .Fn posix_spawn_file_actions_addopen function during this process, so storage need not be persistent in the caller.

p The .Fn posix_spawn_file_actions_adddup2 function adds a dup2 operation to the list of operations associated with the object referenced by .Em file_actions , for subsequent use in a call to .Xr posix_spawn 2 or .Xr posix_spawnp 2 . The descriptor referred to by .Em newfiledes is created as if .Fn dup2 had been called on .Em filedes prior to the new child process starting execution. .Sh RETURN VALUES On success, these functions return 0; on failure they return an error number from n errno.h . .Sh ERRORS These functions may fail if: l -tag -width Er ==========
t Bq Er EBADF The value specified by .Fa filedes is negative or would cause the process to exceed the maximum number of open files it is allowed.. ==========
t Bq Er EINVAL The value of .Fa file_actions is invalid. ==========
t Bq Er ENOMEM Insufficient memory was available eo add to the .Fa file_actions . .El .Sh SEE ALSO .Xr posix_spawn 2 , .Xr posix_spawnp 2 , .Xr posix_spawn_file_actions_init 3 , .Xr posix_spawn_file_actions_destroy 3 , .Sh STANDARDS .St -susv3 [SPN] .Sh HISTORY The .Fn posix_spawn_file_actions_init and .Fn posix_spawn_file_actions_destroy function calls appeared in .St -susv3 [SPN] .