TMPFILE64(3)

NAME
tmpfile64, _tmpfile64_r - create a large temporary file

SYNOPSIS

#include <stdio.h>

FILE *tmpfile64(void);

FILE *_tmpfile64_r(void *reent);

DESCRIPTION

Create a large temporary file (a file which will be deleted automatically), using a name generated by tmpnam. The temporary file is opened with the mode "wb+", permitting you to read and write anywhere in it as a binary file (without any data transformations the host system may perform for text files). The file may be larger than 2GB.

The alternate function _tmpfile64_r is a reentrant version. The argument reent is a pointer to a reentrancy structure.

Both tmpfile64 and _tmpfile64_r are only defined if __LARGE64_FILES is defined.

RETURNS

tmpfile64 normally returns a pointer to the temporary file. If no temporary file could be created, the result is NULL, and errno records the reason for failure.

PORTABILITY

tmpfile64 is a glibc extension.

Supporting OS subroutines required: close, fstat, getpid, isatty, lseek64, open64, read, sbrk, write.

tmpfile64 also requires the global pointer environ.

AUTHORS

Steve Chamberlain
    Author.

Roland Pesch
    Author.

Red Hat Support

Jeff Johnston
    Author.

COPYRIGHT

This file documents the ANSI C library.

Copyright (C) 1992, 1993, 1994-2014 Red Hat, Inc.

libc includes software developed by the University of California, Berkeley and its contributors.

libc includes software developed by Martin Jackson, Graham Haley and Steve Chamberlain of Tadpole Technology and released to Cygnus.

libc uses floating-point conversion software developed at AT&T, which includes this copyright information:

The author of this software is David M. Gay.

Copyright (c) 1991 by AT&T.

Permission to use, copy, modify, and distribute this software for any purpose without fee is hereby granted, provided that this entire notice is included in all copies of any software which is or includes a copy or modification of this software and in all copies of the supporting documentation for such software.

THIS SOFTWARE IS BEING PROVIDED "AS IS", WITHOUT ANY EXPRESS OR IMPLIED WARRANTY. IN PARTICULAR, NEITHER THE AUTHOR NOR AT&T MAKES ANY REPRESENTATION OR WARRANTY OF ANY KIND CONCERNING THE MERCHANTABILITY OF THIS SOFTWARE OR ITS FITNESS FOR ANY PARTICULAR PURPOSE.

Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies.

Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, subject to the terms of the GNU General Public License, which includes the provision that the entire resulting derived work is distributed under the terms of a permission notice identical to this one.

Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions.