1/*	$OpenBSD: ftw.c,v 1.5 2005/08/08 08:05:34 espie Exp $	*/
2
3/*
4 * Copyright (c) 2003, 2004 Todd C. Miller <Todd.Miller@courtesan.com>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 *
18 * Sponsored in part by the Defense Advanced Research Projects
19 * Agency (DARPA) and Air Force Research Laboratory, Air Force
20 * Materiel Command, USAF, under agreement number F39502-99-1-0512.
21 */
22
23#include <sys/cdefs.h>
24__FBSDID("$FreeBSD$");
25
26#include <sys/types.h>
27#include <sys/stat.h>
28#include <errno.h>
29#include <fts.h>
30#include <ftw.h>
31
32int
33ftw(const char *path, int (*fn)(const char *, const struct stat *, int),
34    int nfds)
35{
36	char * const paths[2] = { (char *)path, NULL };
37	FTSENT *cur;
38	FTS *ftsp;
39	int error = 0, fnflag, sverrno;
40
41	/* XXX - nfds is currently unused */
42	if (nfds < 1) {
43		errno = EINVAL;
44		return (-1);
45	}
46
47	ftsp = fts_open(paths, FTS_LOGICAL | FTS_COMFOLLOW | FTS_NOCHDIR, NULL);
48	if (ftsp == NULL)
49		return (-1);
50	while ((cur = fts_read(ftsp)) != NULL) {
51		switch (cur->fts_info) {
52		case FTS_D:
53			fnflag = FTW_D;
54			break;
55		case FTS_DNR:
56			fnflag = FTW_DNR;
57			break;
58		case FTS_DP:
59			/* we only visit in preorder */
60			continue;
61		case FTS_F:
62		case FTS_DEFAULT:
63			fnflag = FTW_F;
64			break;
65		case FTS_NS:
66		case FTS_NSOK:
67		case FTS_SLNONE:
68			fnflag = FTW_NS;
69			break;
70		case FTS_SL:
71			fnflag = FTW_SL;
72			break;
73		case FTS_DC:
74			errno = ELOOP;
75			/* FALLTHROUGH */
76		default:
77			error = -1;
78			goto done;
79		}
80		error = fn(cur->fts_path, cur->fts_statp, fnflag);
81		if (error != 0)
82			break;
83	}
84done:
85	sverrno = errno;
86	if (fts_close(ftsp) != 0 && error == 0)
87		error = -1;
88	else
89		errno = sverrno;
90	return (error);
91}
92