Add in tempnam()

1 files changed, 48 insertions, 0 deletions

diff --git a/libc/stdio/tempnam.c b/libc/stdio/tempnam.c
new file mode 100644
index 000000000..f1ea626b6
--- /dev/null
+++ b/libc/stdio/tempnam.c
@@ -0,0 +1,48 @@
+/* Copyright (C) 1991,1993,1996-1999,2000 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 <stdio.h>
+#include <string.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);
+
+
+/* Generate a unique temporary filename using up to five characters of PFX
+   if it is not NULL.  The directory to put this file in is searched for
+   as follows: First the environment variable "TMPDIR" is checked.
+   If it contains the name of a writable directory, that directory is used.
+   If not and if DIR is not NULL, that value is checked.  If that fails,
+   P_tmpdir is tried and finally "/tmp".  The storage for the filename
+   is allocated by `malloc'.  */
+char *
+tempnam (const char *dir, const char *pfx)
+{
+  char buf[FILENAME_MAX];
+
+  if (__path_search (buf, FILENAME_MAX, dir, pfx, 1))
+    return NULL;
+
+  if (__gen_tempname (buf, 0))
+    return NULL;
+
+  return strdup (buf);
+}
+
+link_warning (tempnam, "`tempnam' is dangerous, use `mkstemp'")