/* 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; }