From 0ecb606cb6cf65de1d9fc8a919bceb4be476c602 Mon Sep 17 00:00:00 2001 From: Jakub Jelinek Date: Thu, 12 Jul 2007 18:26:36 +0000 Subject: 2.5-18.1 --- stdio-common/tmpfile.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 66 insertions(+) create mode 100644 stdio-common/tmpfile.c (limited to 'stdio-common/tmpfile.c') diff --git a/stdio-common/tmpfile.c b/stdio-common/tmpfile.c new file mode 100644 index 0000000000..41f12bc8ba --- /dev/null +++ b/stdio-common/tmpfile.c @@ -0,0 +1,66 @@ +/* Open a stdio stream on an anonymous temporary file. Generic/POSIX version. + Copyright (C) 1991,93,1996-2000,2002,2003 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 +#include + +#ifdef USE_IN_LIBIO +# include +# define __fdopen INTUSE(_IO_fdopen) +# ifndef tmpfile +# define tmpfile __new_tmpfile +# endif +#endif + +#ifndef GEN_THIS +# define GEN_THIS __GT_FILE +#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, GEN_THIS); + 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; +} + +#if defined USE_IN_LIBIO && GEN_THIS == __GT_FILE /* Not for tmpfile64. */ +# undef tmpfile +# include +versioned_symbol (libc, __new_tmpfile, tmpfile, GLIBC_2_1); +#endif -- cgit v1.2.3