mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-11 13:50:06 +00:00
e5448d7ad2
2000-09-26 Ulrich Drepper <drepper@redhat.com> * sysdeps/unix/sysv/linux/gethostid.c (sethostid): Use O_TRUNC to remove possible garbage at the end of the file. * stdio-common/tmpnam_r.c: Warn about insecure tmpnam_r. * stdio-common/tmpnam.c: Warn about insecure tmpnam. * stdio-common/tempnam.c: Warn about insecure tempnam. * misc/mktemp.c: Warn about insecure mktemp.
45 lines
1.7 KiB
C
45 lines
1.7 KiB
C
/* 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>
|
|
|
|
/* 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, __GT_NOCREATE))
|
|
return NULL;
|
|
|
|
return __strdup (buf);
|
|
}
|
|
|
|
link_warning (tempnam,
|
|
"the use of `tempnam' is dangerous, better use `mkstemp'")
|