1 /* $NetBSD: getcwd.c,v 1.1.1.1 2016/01/13 18:41:48 christos Exp $ */ 2 3 /* Copyright (C) 2000 Free Software Foundation, Inc. 4 Written by James Clark (jjc@jclark.com) 5 6 This file is part of groff. 7 8 groff is free software; you can redistribute it and/or modify it under 9 the terms of the GNU General Public License as published by the Free 10 Software Foundation; either version 2, or (at your option) any later 11 version. 12 13 groff is distributed in the hope that it will be useful, but WITHOUT ANY 14 WARRANTY; without even the implied warranty of MERCHANTABILITY or 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 16 for more details. 17 18 You should have received a copy of the GNU General Public License along 19 with groff; see the file COPYING. If not, write to the Free Software 20 Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */ 21 22 /* Partial emulation of getcwd in terms of getwd. */ 23 24 #include <sys/param.h> 25 #include <string.h> 26 #include <errno.h> 27 28 char *getwd(); 29 30 char *getcwd(buf, size) 31 char *buf; 32 int size; /* POSIX says this should be size_t */ 33 { 34 if (size <= 0) { 35 errno = EINVAL; 36 return 0; 37 } 38 else { 39 char mybuf[MAXPATHLEN]; 40 int saved_errno = errno; 41 42 errno = 0; 43 if (!getwd(mybuf)) { 44 if (errno == 0) 45 ; /* what to do? */ 46 return 0; 47 } 48 errno = saved_errno; 49 if (strlen(mybuf) + 1 > size) { 50 errno = ERANGE; 51 return 0; 52 } 53 strcpy(buf, mybuf); 54 return buf; 55 } 56 } 57