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1/*
2 * Copyright (c) 1983, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * Copyright (c) 2000
6 * Daniel Eischen. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $FreeBSD: head/lib/libc/gen/telldir.h 71579 2001-01-24 13:01:12Z deischen $
32 * $FreeBSD: head/lib/libc/gen/telldir.h 178772 2008-05-05 14:05:23Z kib $
33 */
34
35#ifndef _TELLDIR_H_
36#define _TELLDIR_H_
37
38#include <sys/queue.h>
39
40/*
41 * One of these structures is malloced to describe the current directory
42 * position each time telldir is called. It records the current magic
43 * cookie returned by getdirentries and the offset within the buffer
44 * associated with that return value.
45 */
46struct ddloc {
47 LIST_ENTRY(ddloc) loc_lqe; /* entry in list */
48 long loc_index; /* key associated with structure */
49 long loc_seek; /* magic cookie returned by getdirentries */
50 long loc_loc; /* offset of entry in buffer */
51};
52
53/*
54 * One of these structures is malloced for each DIR to record telldir
55 * positions.
56 */
57struct _telldir {
58 LIST_HEAD(, ddloc) td_locq; /* list of locations */
59 long td_loccnt; /* index of entry for sequential readdir's */
60};
61
62struct dirent *_readdir_unlocked(DIR *);
62struct dirent *_readdir_unlocked(DIR *, int);
63void _reclaim_telldir(DIR *);
64void _seekdir(DIR *, long);
65
66#endif