ftw.c revision 134244 
1/*	$OpenBSD: ftw.c,v 1.4 2004/07/07 16:05:23 millert 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#if 0
24#if defined(LIBC_SCCS) && !defined(lint)
25static const char rcsid[] = "$OpenBSD: ftw.c,v 1.4 2004/07/07 16:05:23 millert Exp $";
26#endif /* LIBC_SCCS and not lint */
27#endif
28
29#include <sys/cdefs.h>
30__FBSDID("$FreeBSD: head/lib/libc/gen/ftw.c 134244 2004-08-24 13:00:55Z tjr $");
31
32#include <sys/types.h>
33#include <sys/stat.h>
34#include <errno.h>
35#include <fts.h>
36#include <ftw.h>
37#include <limits.h>
38
39int
40ftw(const char *path, int (*fn)(const char *, const struct stat *, int),
41    int nfds)
42{
43	char * const paths[2] = { (char *)path, NULL };
44	FTSENT *cur;
45	FTS *ftsp;
46	int error = 0, fnflag, sverrno;
47
48	/* XXX - nfds is currently unused */
49	if (nfds < 1 || nfds > OPEN_MAX) {
50		errno = EINVAL;
51		return (-1);
52	}
53
54	ftsp = fts_open(paths, FTS_LOGICAL | FTS_COMFOLLOW | FTS_NOCHDIR, NULL);
55	if (ftsp == NULL)
56		return (-1);
57	while ((cur = fts_read(ftsp)) != NULL) {
58		switch (cur->fts_info) {
59		case FTS_D:
60			fnflag = FTW_D;
61			break;
62		case FTS_DNR:
63			fnflag = FTW_DNR;
64			break;
65		case FTS_DP:
66			/* we only visit in preorder */
67			continue;
68		case FTS_F:
69		case FTS_DEFAULT:
70			fnflag = FTW_F;
71			break;
72		case FTS_NS:
73		case FTS_NSOK:
74		case FTS_SLNONE:
75			fnflag = FTW_NS;
76			break;
77		case FTS_SL:
78			fnflag = FTW_SL;
79			break;
80		case FTS_DC:
81			errno = ELOOP;
82			/* FALLTHROUGH */
83		default:
84			error = -1;
85			goto done;
86		}
87		error = fn(cur->fts_path, cur->fts_statp, fnflag);
88		if (error != 0)
89			break;
90	}
91done:
92	sverrno = errno;
93	if (fts_close(ftsp) != 0 && error == 0)
94		error = -1;
95	else
96		errno = sverrno;
97	return (error);
98}
99