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You are here: manpages





TMPFILE

Section: Linux Programmer's Manual (3)
Updated: 2015-03-02
Index Return to Main Contents
 

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.
EMFILE
Too many file descriptors in use by the process.
ENFILE
Too many files open in the system.
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).
InterfaceAttributeValue
tmpfile() Thread safetyMT-Safe
 

CONFORMING TO

SVr4, 4.3BSD, C89, C99, SUSv2, POSIX.1-2001.  

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 3.81 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 http://www.kernel.org/doc/man-pages/.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUE
ERRORS
ATTRIBUTES
CONFORMING TO
NOTES
SEE ALSO
COLOPHON


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