1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or https://opensource.org/licenses/CDDL-1.0.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22/*
23 * Copyright (c) 1989, 2010, Oracle and/or its affiliates. All rights reserved.
24 */
25
26/*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
27/*	  All Rights Reserved  	*/
28
29/*
30 * Portions of this source code were derived from Berkeley 4.3 BSD
31 * under license from the Regents of the University of California.
32 */
33
34#ifndef _SYS_PATHNAME_H
35#define	_SYS_PATHNAME_H
36
37#ifdef	__cplusplus
38extern "C" {
39#endif
40
41/*
42 * Pathname structure.
43 * System calls that operate on path names gather the path name
44 * from the system call into this structure and reduce it by
45 * peeling off translated components.  If a symbolic link is
46 * encountered the new path name to be translated is also
47 * assembled in this structure.
48 *
49 * By convention pn_buf is not changed once it's been set to point
50 * to the underlying storage; routines which manipulate the pathname
51 * do so by changing pn_path and pn_pathlen.  pn_pathlen is redundant
52 * since the path name is null-terminated, but is provided to make
53 * some computations faster.
54 */
55typedef struct pathname {
56	char	*pn_buf;		/* underlying storage */
57	size_t	pn_bufsize;		/* total size of pn_buf */
58} pathname_t;
59
60extern void	pn_alloc(struct pathname *);
61extern void	pn_alloc_sz(struct pathname *, size_t);
62extern void	pn_free(struct pathname *);
63
64#ifdef	__cplusplus
65}
66#endif
67
68#endif	/* _SYS_PATHNAME_H */
69