Blame libio/oldtmpfile.c

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/* Copyright (C) 1991-2018 Free Software Foundation, Inc.
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   This file is part of the GNU C Library.
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   The GNU C Library is free software; you can redistribute it and/or
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   modify it under the terms of the GNU Lesser General Public
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   License as published by the Free Software Foundation; either
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   version 2.1 of the License, or (at your option) any later version.
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   The GNU C Library is distributed in the hope that it will be useful,
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   but WITHOUT ANY WARRANTY; without even the implied warranty of
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   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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   Lesser General Public License for more details.
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   You should have received a copy of the GNU Lesser General Public
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   License along with the GNU C Library; if not, see
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   <http://www.gnu.org/licenses/>.  */
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#include <shlib-compat.h>
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#if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_1)
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#define _IO_USE_OLD_IO_FILE
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#include <stdio.h>
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#include <unistd.h>
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#include <iolibio.h>
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/* This returns a new stream opened on a temporary file (generated
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   by tmpnam).  The file is opened with mode "w+b" (binary read/write).
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   If we couldn't generate a unique filename or the file couldn't
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   be opened, NULL is returned.  */
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FILE *
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attribute_compat_text_section
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__old_tmpfile (void)
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{
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  char buf[FILENAME_MAX];
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  int fd;
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  FILE *f;
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  if (__path_search (buf, FILENAME_MAX, NULL, "tmpf", 0))
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    return NULL;
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  fd = __gen_tempname (buf, 0, 0, __GT_FILE);
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  if (fd < 0)
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    return NULL;
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  /* Note that this relies on the Unix semantics that
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     a file is not really removed until it is closed.  */
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  (void) __unlink (buf);
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  if ((f = _IO_old_fdopen (fd, "w+b")) == NULL)
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    __close (fd);
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  return f;
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}
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compat_symbol (libc, __old_tmpfile, tmpfile, GLIBC_2_0);
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#endif