Update.
[glibc.git] / io / getwd.c
blob7ec56eebbfae468b267c73a24f398323d346bdce
1 /* Obsolete function to get current working directory.
2 Copyright (C) 1991, 1992, 1996, 1997, 1998 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Library General Public License as
7 published by the Free Software Foundation; either version 2 of the
8 License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Library General Public License for more details.
15 You should have received a copy of the GNU Library General Public
16 License along with the GNU C Library; see the file COPYING.LIB. If not,
17 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA. */
20 #include <errno.h>
21 #include <limits.h>
22 #include <string.h>
23 #include <unistd.h>
26 char *
27 getwd (buf)
28 char *buf;
30 #ifndef PATH_MAX
31 #define PATH_MAX 1024
32 #endif
33 char tmpbuf[PATH_MAX];
35 if (buf == NULL)
37 __set_errno (EINVAL);
38 return NULL;
41 if (__getcwd (tmpbuf, PATH_MAX) == NULL)
43 /* We use 1024 here since it should really be enough and because
44 this is a safe value. */
45 __strerror_r (errno, buf, 1024);
46 return NULL;
49 /* This is completely unsafe. Nobody can say how big the user
50 provided buffer is. Perhaps the application and the libc
51 disagree about the value of PATH_MAX. */
52 return strcpy (buf, tmpbuf);
55 link_warning (getwd,
56 "the `getwd' function is dangerous and should not be used.")