TMPFILE
Section: Linux Programmer's Manual (3)
Updated: 2016-03-15
Page Index
NAME
tmpfile - create a temporary file
SYNOPSIS
#include <stdio.h>
FILE *tmpfile(void);
DESCRIPTION
The
tmpfile()
function opens a unique temporary file
in binary read/write (w+b) mode.
The file will be automatically deleted when it is closed or the
program terminates.
RETURN VALUE
The
tmpfile()
function returns a stream descriptor, or NULL if
a unique filename cannot be generated or the unique file cannot be
opened.
In the latter case,
errno
is set to indicate the error.
ERRORS
- EACCES
-
Search permission denied for directory in file's path prefix.
- EEXIST
-
Unable to generate a unique filename.
- EINTR
-
The call was interrupted by a signal; see
signal(7).
- EMFILE
-
The per-process limit on the number of open file descriptors has been reached.
- ENFILE
-
The system-wide limit on the total number of open files has been reached.
- ENOSPC
-
There was no room in the directory to add the new filename.
- EROFS
-
Read-only filesystem.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
tmpfile()
| Thread safety | MT-Safe
|
CONFORMING TO
POSIX.1-2001, POSIX.1-2008, C89, C99, SVr4, 4.3BSD, SUSv2.
NOTES
POSIX.1-2001 specifies:
an error message may be written to
stdout
if the stream
cannot be opened.
The standard does not specify the directory that
tmpfile()
will use.
Glibc will try the path prefix
P_tmpdir
defined
in
<stdio.h>,
and if that fails the directory
/tmp.
SEE ALSO
exit(3),
mkstemp(3),
mktemp(3),
tempnam(3),
tmpnam(3)
COLOPHON
This page is part of release 5.10 of the Linux
man-pages
project.
A description of the project,
information about reporting bugs,
and the latest version of this page,
can be found at
https://www.kernel.org/doc/man-pages/.