Copyright 1989 AT&T. Copyright (c) 1992, X/Open Company Limited. All Rights Reserved. Portions Copyright (c) 2003, Sun Microsystems, Inc. All Rights Reserved.
Sun Microsystems, Inc. gratefully acknowledges The Open Group for permission to reproduce portions of its copyrighted documentation. Original documentation from The Open Group can be obtained online at
http://www.opengroup.org/bookstore/.
The Institute of Electrical and Electronics Engineers and The Open Group, have given us permission to reprint portions of their documentation. In the following statement, the phrase "this text" refers to portions of the system documentation. Portions of this text are reprinted and reproduced in electronic form in the Sun OS Reference Manual, from IEEE Std 1003.1, 2004 Edition, Standard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copyright (C) 2001-2004 by the Institute of Electrical and Electronics Engineers, Inc and The Open Group. In the event of any discrepancy between these versions and the original IEEE and The Open Group Standard, the original IEEE and The Open Group Standard is the referee document. The original Standard can be obtained online at http://www.opengroup.org/unix/online.html.
This notice shall appear on any product containing this material.
The contents of this file are subject to the terms of the Common Development and Distribution License (the "License"). You may not use this file except in compliance with the License.
You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE or http://www.opensolaris.org/os/licensing. See the License for the specific language governing permissions and limitations under the License.
When distributing Covered Code, include this CDDL HEADER in each file and include the License file at usr/src/OPENSOLARIS.LICENSE. If applicable, add the following below this CDDL HEADER, with the fields enclosed by brackets "[]" replaced with your own identifying information: Portions Copyright [yyyy] [name of copyright owner]
#include <stdio.h> FILE *tmpfile(void);
The tmpfile() function creates a temporary file and opens a corresponding stream. The file will automatically be deleted when all references to the file are closed. The file is opened as in fopen(3C) for update (w+).
The largest value that can be represented correctly in an object of type off_t will be established as the offset maximum in the open file description.
Upon successful completion, tmpfile() returns a pointer to the stream of the file that is created. Otherwise, it returns a null pointer and sets errno to indicate the error.
The tmpfile() function will fail if:
EINTR
A signal was caught during the execution of tmpfile().
EMFILE
There are OPEN_MAX file descriptors currently open in the calling process.
ENFILE
The maximum allowable number of files is currently open in the system.
ENOSPC
The directory or file system which would contain the new file cannot be expanded.
The tmpfile() function may fail if:
EMFILE
There are FOPEN_MAX streams currently open in the calling process.
ENOMEM
Insufficient storage space is available.
The stream refers to a file which is unlinked. If the process is killed in the period between file creation and unlinking, a permanent file may be left behind.
The tmpfile() function has a transitional interface for 64-bit file offsets. See lf64(5).
See attributes(5) for descriptions of the following attributes:
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
| Interface Stability | Standard |
unlink(2), fopen(3C), mkstemp(3C), mktemp(3C), tmpnam(3C), lf64(5), standards(5)