mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-23 05:20:06 +00:00
68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/* Open a stdio stream on an anonymous temporary file. Generic/POSIX version.
|
|
Copyright (C) 1991,1993,1996-2000,2002,2003,2007,2009,2011
|
|
Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, write to the Free
|
|
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
|
02111-1307 USA. */
|
|
|
|
#include <fcntl.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
|
|
#include <iolibio.h>
|
|
#define __fdopen INTUSE(_IO_fdopen)
|
|
#ifndef tmpfile
|
|
# define tmpfile __new_tmpfile
|
|
#endif
|
|
|
|
|
|
/* This returns a new stream opened on a temporary file (generated
|
|
by tmpnam). The file is opened with mode "w+b" (binary read/write).
|
|
If we couldn't generate a unique filename or the file couldn't
|
|
be opened, NULL is returned. */
|
|
FILE *
|
|
tmpfile (void)
|
|
{
|
|
char buf[FILENAME_MAX];
|
|
int fd;
|
|
FILE *f;
|
|
|
|
if (__path_search (buf, FILENAME_MAX, NULL, "tmpf", 0))
|
|
return NULL;
|
|
int flags = 0;
|
|
#ifdef FLAGS
|
|
flags = FLAGS;
|
|
#endif
|
|
fd = __gen_tempname (buf, 0, flags, __GT_FILE);
|
|
if (fd < 0)
|
|
return NULL;
|
|
|
|
/* Note that this relies on the Unix semantics that
|
|
a file is not really removed until it is closed. */
|
|
(void) __unlink (buf);
|
|
|
|
if ((f = __fdopen (fd, "w+b")) == NULL)
|
|
__close (fd);
|
|
|
|
return f;
|
|
}
|
|
|
|
#ifndef FLAGS /* Not for tmpfile64. */
|
|
# undef tmpfile
|
|
# include <shlib-compat.h>
|
|
versioned_symbol (libc, __new_tmpfile, tmpfile, GLIBC_2_1);
|
|
#endif
|