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-rw-r--r--libc/stdio/tmpnam.c55
1 files changed, 30 insertions, 25 deletions
diff --git a/libc/stdio/tmpnam.c b/libc/stdio/tmpnam.c
index 38475a8ec..bc4ffeb6a 100644
--- a/libc/stdio/tmpnam.c
+++ b/libc/stdio/tmpnam.c
@@ -1,20 +1,20 @@
-/* Copyright (C) 1991, 1993, 1996, 1997, 1998 Free Software Foundation, Inc.
+/* 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.
+ 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
- Library General Public License for more details.
+ Lesser 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. */
+ 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 <stdio.h>
#include <string.h>
@@ -25,26 +25,31 @@ libc_hidden_proto(memcpy)
static char tmpnam_buffer[L_tmpnam];
/* Generate a unique filename in P_tmpdir.
- This function is *not* thread safe when S == NULL!
-*/
-char * tmpnam (char *s)
+
+ This function is *not* thread safe! */
+char *
+tmpnam (char *s)
{
- /* By using two buffers we manage to be thread safe in the case
- where S != NULL. */
- char tmpbuf[L_tmpnam];
+ /* By using two buffers we manage to be thread safe in the case
+ where S != NULL. */
+ char tmpbufmem[L_tmpnam];
+ char *tmpbuf = s ?: tmpbufmem;
- /* In the following call we use the buffer pointed to by S if
- non-NULL although we don't know the size. But we limit the size
- to L_tmpnam characters in any case. */
- if (__path_search (s ? : tmpbuf, L_tmpnam, NULL, NULL, 0))
- return NULL;
+ /* In the following call we use the buffer pointed to by S if
+ non-NULL although we don't know the size. But we limit the size
+ to L_tmpnam characters in any case. */
+ if (__builtin_expect (__path_search (tmpbuf, L_tmpnam, NULL, NULL, 0),
+ 0))
+ return NULL;
- if (__gen_tempname (s ? : tmpbuf, __GT_NOCREATE))
- return NULL;
+ if (__builtin_expect (__gen_tempname (tmpbuf, __GT_NOCREATE), 0))
+ return NULL;
- if (s == NULL)
- return (char *) memcpy (tmpnam_buffer, tmpbuf, L_tmpnam);
+ if (s == NULL)
+ return (char *) memcpy (tmpnam_buffer, tmpbuf, L_tmpnam);
- return s;
+ return s;
}
+link_warning (tmpnam,
+ "the use of `tmpnam' is dangerous, better use `mkstemp'")