/* Copyright (C) 1991, 1993, 1996, 1997, 1998 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 Library General Public License as published by the Free Software Foundation; either version 2 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 Library General Public License for more details. You should have received a copy of the GNU Library General Public License along with the GNU C Library; see the file COPYING.LIB. If not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include <features.h> #include <stdio.h> #include <unistd.h> extern int __path_search (char *tmpl, size_t tmpl_len, const char *dir, const char *pfx, int try_tmpdir); extern int __gen_tempname (char *tmpl, int openit); /* 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, 1); 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 __UCLIBC_HAVE_LFS__ weak_alias(tmpfile, tmpfile64); #endif