glibc/sysdeps/generic/tmpfile.c
Roland McGrath 27114e2046 * stdio-common/tmpfile.c: Moved to ...
* sysdeps/generic/tmpfile.c: ... here.
	* sysdeps/mach/hurd/tmpfile.c: New file.

	* hurd/fopenport.c (__fopenport): Renamed from fopenport.
	[USE_IN_LIBIO] (fopencookie): #define as _IO_fopencookie.
	(fopenport): Define as weak alias.

	* libio/iofopncook.c (_IO_fopencookie): Move forward declaration ...
	* libio/libioP.h: ... to here.
2001-11-13 10:07:33 +00:00

61 lines
1.9 KiB
C

/* Open a stdio stream on an anonymous temporary file. Generic/POSIX version.
Copyright (C) 1991,93,96,97,98,99,2000 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 <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, __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) remove (buf);
if ((f = __fdopen (fd, "w+b")) == NULL)
__close (fd);
return f;
}
#ifdef USE_IN_LIBIO
# undef tmpfile
# include <shlib-compat.h>
versioned_symbol (libc, __new_tmpfile, tmpfile, GLIBC_2_1);
#endif