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