glibc/stdio-common/tmpfile.c
Ulrich Drepper 60876a7544 Update.
* include/stdio.h: Add new parameter to __path_search.
	* libio/oldtmpfile.c: Add 0 as new parameter to __path_search.
	* stdio-common/tmpfile.c: Likewise.
	* stdio-common/tmpfile64.c: Likewise.
	* stdio-common/tmpnam.c: Likewise.
	* stdio-common/tmpnam_r.c: Likewise.
	* stdio-common/tempnam.c: Add 1 as new parameter to __path_search.
	* sysdeps/posix/tempname.c: Add new parameter.  If value is nonzero
	consider TMPDIR environment variable and dir parameter.  Otherwise not.
	* stdio-common/Makefile (tests): Add tst-tmpnam.
	* stdio-common/tst-tmpnam.c: New file.
1998-12-14 15:23:56 +00:00

65 lines
1.9 KiB
C

/* Copyright (C) 1991, 1993, 1996, 1997, 1998 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <stdio.h>
#include <unistd.h>
#ifdef USE_IN_LIBIO
# include <iolibio.h>
# define __fdopen _IO_fdopen
# 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;
fd = __gen_tempname (buf, 1, 0);
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) remove (buf);
if ((f = __fdopen (fd, "w+b")) == NULL)
__close (fd);
return f;
}
#ifdef USE_IN_LIBIO
# undef tmpfile
# if defined PIC && DO_VERSIONING
default_symbol_version (__new_tmpfile, tmpfile, GLIBC_2.1);
# else
# ifdef weak_alias
weak_alias (__new_tmpfile, tmpfile)
# endif
# endif
#endif