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/*
* getcwd.c --
*
* This file provides an implementation of the getcwd procedure
* that uses getwd, for systems with getwd but without getcwd.
*
* Copyright (c) 1993 The Regents of the University of California.
* All rights reserved.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
#ifndef lint
static char rcsid[] = "$Header: /user6/ouster/tcl/compat/RCS/getcwd.c,v 1.2 93/07/12 14:00:59 ouster Exp $ SPRITE (Berkeley)";
#endif /* not lint */
#include "tclInt.h"
#include "tclUnix.h"
extern char *getwd _ANSI_ARGS_((char *pathname));
char *
getcwd(buf, size)
char *buf; /* Where to put path for current directory. */
size_t size; /* Number of bytes at buf. */
{
char realBuffer[MAXPATHLEN+1];
int length;
if (getwd(realBuffer) == NULL) {
/*
* There's not much we can do besides guess at an errno to
* use for the result (the error message in realBuffer isn't
* much use...).
*/
errno = EACCES;
return NULL;
}
length = strlen(realBuffer);
if (length >= size) {
errno = ERANGE;
return NULL;
}
strcpy(buf, realBuffer);
return buf;
}
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