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- /* Copyright (C) 1991, 1992 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., 675 Mass Ave,
- Cambridge, MA 02139, USA. */
-
- #include <ansidecl.h>
- #include <errno.h>
- #include <limits.h>
- #include <string.h>
- #include <unistd.h>
-
- /* Put the absolute pathname of the current working direction in BUF.
- If successful, return BUF. If not, put an error message in
- BUF and return NULL. BUF should be at least PATH_MAX bytes long. */
- char *
- DEFUN(getwd, (buf), char *buf)
- {
- if (buf == NULL)
- {
- errno = EINVAL;
- return NULL;
- }
-
- #ifndef PATH_MAX
- #define PATH_MAX 1024 /* Arbitrary; this function is unreliable. */
- #endif
- if (getcwd (buf, PATH_MAX) == NULL)
- {
- (void) strncpy (buf, strerror (errno), PATH_MAX);
- return NULL;
- }
-
- return buf;
- }
-