10Sstevel@tonic-gate /*
20Sstevel@tonic-gate * CDDL HEADER START
30Sstevel@tonic-gate *
40Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*6812Sraf * Common Development and Distribution License (the "License").
6*6812Sraf * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate *
80Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate * See the License for the specific language governing permissions
110Sstevel@tonic-gate * and limitations under the License.
120Sstevel@tonic-gate *
130Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate *
190Sstevel@tonic-gate * CDDL HEADER END
200Sstevel@tonic-gate */
21*6812Sraf
220Sstevel@tonic-gate /*
23*6812Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
240Sstevel@tonic-gate * Use is subject to license terms.
250Sstevel@tonic-gate */
260Sstevel@tonic-gate
270Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
280Sstevel@tonic-gate
290Sstevel@tonic-gate /*
300Sstevel@tonic-gate * getcwd() returns the pathname of the current working directory.
310Sstevel@tonic-gate * On error, a NULL pointer is returned and errno is set.
320Sstevel@tonic-gate */
330Sstevel@tonic-gate
34*6812Sraf #pragma weak _getcwd = getcwd
350Sstevel@tonic-gate
36*6812Sraf #include "lint.h"
370Sstevel@tonic-gate #include <sys/syscall.h>
380Sstevel@tonic-gate #include <sys/types.h>
390Sstevel@tonic-gate #include <errno.h>
400Sstevel@tonic-gate #include <stdlib.h>
410Sstevel@tonic-gate
420Sstevel@tonic-gate char *
getcwd(char * pathname,size_t size)430Sstevel@tonic-gate getcwd(char *pathname, size_t size)
440Sstevel@tonic-gate {
450Sstevel@tonic-gate int alloc = 0;
460Sstevel@tonic-gate
470Sstevel@tonic-gate if (size == 0) {
480Sstevel@tonic-gate errno = EINVAL;
490Sstevel@tonic-gate return (NULL);
500Sstevel@tonic-gate }
510Sstevel@tonic-gate
520Sstevel@tonic-gate if (pathname == NULL) {
530Sstevel@tonic-gate if ((pathname = malloc(size)) == NULL) {
540Sstevel@tonic-gate errno = ENOMEM;
550Sstevel@tonic-gate return (NULL);
560Sstevel@tonic-gate }
570Sstevel@tonic-gate alloc = 1;
580Sstevel@tonic-gate }
590Sstevel@tonic-gate
600Sstevel@tonic-gate if (syscall(SYS_getcwd, pathname, size) == 0)
610Sstevel@tonic-gate return (pathname);
620Sstevel@tonic-gate
630Sstevel@tonic-gate if (alloc)
640Sstevel@tonic-gate free(pathname);
650Sstevel@tonic-gate
660Sstevel@tonic-gate return (NULL);
670Sstevel@tonic-gate }
68