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27114e20 | 1 | /* Open a stdio stream on an anonymous temporary file. Generic/POSIX version. |
f1c30c98 | 2 | Copyright (C) 1991,93,1996-2000,2002,2003 Free Software Foundation, Inc. |
f8b87ef0 UD |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
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. | |
f8b87ef0 UD |
9 | |
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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
f8b87ef0 | 14 | |
41bdb6e2 AJ |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, write to the Free | |
17 | Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA | |
18 | 02111-1307 USA. */ | |
28f540f4 | 19 | |
28f540f4 | 20 | #include <stdio.h> |
9fbffc46 | 21 | #include <unistd.h> |
28f540f4 | 22 | |
7ce241a0 UD |
23 | #ifdef USE_IN_LIBIO |
24 | # include <iolibio.h> | |
77fe0b9c | 25 | # define __fdopen INTUSE(_IO_fdopen) |
650f6700 RM |
26 | # ifndef tmpfile |
27 | # define tmpfile __new_tmpfile | |
28 | # endif | |
7cabd57c | 29 | #endif |
28f540f4 | 30 | |
337738b7 RM |
31 | #ifndef GEN_THIS |
32 | # define GEN_THIS __GT_FILE | |
33 | #endif | |
34 | ||
28f540f4 | 35 | /* This returns a new stream opened on a temporary file (generated |
7ce241a0 | 36 | by tmpnam). The file is opened with mode "w+b" (binary read/write). |
28f540f4 RM |
37 | If we couldn't generate a unique filename or the file couldn't |
38 | be opened, NULL is returned. */ | |
39 | FILE * | |
7ce241a0 | 40 | tmpfile (void) |
28f540f4 | 41 | { |
d68171ed | 42 | char buf[FILENAME_MAX]; |
7cabd57c | 43 | int fd; |
28f540f4 RM |
44 | FILE *f; |
45 | ||
60876a75 | 46 | if (__path_search (buf, FILENAME_MAX, NULL, "tmpf", 0)) |
7cabd57c | 47 | return NULL; |
337738b7 | 48 | fd = __gen_tempname (buf, GEN_THIS); |
7ce241a0 | 49 | if (fd < 0) |
28f540f4 RM |
50 | return NULL; |
51 | ||
52 | /* Note that this relies on the Unix semantics that | |
53 | a file is not really removed until it is closed. */ | |
f1c30c98 | 54 | (void) __unlink (buf); |
7cabd57c | 55 | |
7ce241a0 UD |
56 | if ((f = __fdopen (fd, "w+b")) == NULL) |
57 | __close (fd); | |
28f540f4 RM |
58 | |
59 | return f; | |
60 | } | |
7ce241a0 | 61 | |
650f6700 | 62 | #if defined USE_IN_LIBIO && GEN_THIS == __GT_FILE /* Not for tmpfile64. */ |
7ce241a0 | 63 | # undef tmpfile |
9010d7f8 RM |
64 | # include <shlib-compat.h> |
65 | versioned_symbol (libc, __new_tmpfile, tmpfile, GLIBC_2_1); | |
7ce241a0 | 66 | #endif |