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/types.h>
24 #include <sys/stat.h>
25 #include <errno.h>
26 #include <fts.h>
27 #include <ftw.h>
28
29 int
ftw(const char * path,int (* fn)(const char *,const struct stat *,int),int nfds)30 ftw(const char *path, int (*fn)(const char *, const struct stat *, int),
31 int nfds)
32 {
33 char * const paths[2] = { (char *)path, NULL };
34 FTSENT *cur;
35 FTS *ftsp;
36 int error = 0, fnflag, sverrno;
37
38 /* XXX - nfds is currently unused */
39 if (nfds < 1) {
40 errno = EINVAL;
41 return (-1);
42 }
43
44 ftsp = fts_open(paths, FTS_LOGICAL | FTS_COMFOLLOW | FTS_NOCHDIR, NULL);
45 if (ftsp == NULL)
46 return (-1);
47 while ((cur = fts_read(ftsp)) != NULL) {
48 switch (cur->fts_info) {
49 case FTS_D:
50 fnflag = FTW_D;
51 break;
52 case FTS_DNR:
53 fnflag = FTW_DNR;
54 break;
55 case FTS_DP:
56 /* we only visit in preorder */
57 continue;
58 case FTS_F:
59 case FTS_DEFAULT:
60 fnflag = FTW_F;
61 break;
62 case FTS_NS:
63 case FTS_NSOK:
64 case FTS_SLNONE:
65 fnflag = FTW_NS;
66 break;
67 case FTS_SL:
68 fnflag = FTW_SL;
69 break;
70 case FTS_DC:
71 errno = ELOOP;
72 /* FALLTHROUGH */
73 default:
74 error = -1;
75 goto done;
76 }
77 error = fn(cur->fts_path, cur->fts_statp, fnflag);
78 if (error != 0)
79 break;
80 }
81 done:
82 sverrno = errno;
83 if (fts_close(ftsp) != 0 && error == 0)
84 error = -1;
85 else
86 errno = sverrno;
87 return (error);
88 }
89