1 /* Open a stdio stream on an anonymous temporary file. Generic/POSIX version.
2 Copyright (C) 1991-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <https://www.gnu.org/licenses/>. */
24 #define __fdopen _IO_fdopen
26 # define tmpfile __new_tmpfile
30 /* This returns a new stream opened on a temporary file (generated
31 by tmpnam). The file is opened with mode "w+b" (binary read/write).
32 If we couldn't generate a unique filename or the file couldn't
33 be opened, NULL is returned. */
44 /* First try a system specific method. */
45 fd
= __gen_tempfd (flags
);
49 char buf
[FILENAME_MAX
];
51 if (__path_search (buf
, sizeof buf
, NULL
, "tmpf", 0))
54 fd
= __gen_tempname (buf
, 0, flags
, __GT_FILE
);
58 /* Note that this relies on the Unix semantics that
59 a file is not really removed until it is closed. */
60 (void) __unlink (buf
);
63 if ((f
= __fdopen (fd
, "w+b")) == NULL
)
69 #if !defined O_LARGEFILE || O_LARGEFILE == 0
70 weak_alias (__new_tmpfile
, tmpfile64
)
73 #ifndef FLAGS /* Not for tmpfile64. */
75 # include <shlib-compat.h>
76 versioned_symbol (libc
, __new_tmpfile
, tmpfile
, GLIBC_2_1
);