1 |
|
|
/* $OpenBSD: nftw.c,v 1.7 2006/03/31 19:41:44 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 |
|
|
#include <sys/types.h> |
24 |
|
|
#include <sys/stat.h> |
25 |
|
|
#include <errno.h> |
26 |
|
|
#include <fts.h> |
27 |
|
|
#include <ftw.h> |
28 |
|
|
|
29 |
|
|
int |
30 |
|
|
nftw(const char *path, int (*fn)(const char *, const struct stat *, int, |
31 |
|
|
struct FTW *), int nfds, int ftwflags) |
32 |
|
|
{ |
33 |
|
|
char * const paths[2] = { (char *)path, NULL }; |
34 |
|
|
struct FTW ftw; |
35 |
|
|
FTSENT *cur; |
36 |
|
|
FTS *ftsp; |
37 |
|
|
int error = 0, ftsflags, fnflag, postorder, sverrno; |
38 |
|
|
|
39 |
|
|
/* XXX - nfds is currently unused */ |
40 |
|
|
if (nfds < 1) { |
41 |
|
|
errno = EINVAL; |
42 |
|
|
return (-1); |
43 |
|
|
} |
44 |
|
|
|
45 |
|
|
ftsflags = FTS_COMFOLLOW; |
46 |
|
|
if (!(ftwflags & FTW_CHDIR)) |
47 |
|
|
ftsflags |= FTS_NOCHDIR; |
48 |
|
|
if (ftwflags & FTW_MOUNT) |
49 |
|
|
ftsflags |= FTS_XDEV; |
50 |
|
|
if (ftwflags & FTW_PHYS) |
51 |
|
|
ftsflags |= FTS_PHYSICAL; |
52 |
|
|
else |
53 |
|
|
ftsflags |= FTS_LOGICAL; |
54 |
|
|
postorder = (ftwflags & FTW_DEPTH) != 0; |
55 |
|
|
ftsp = fts_open(paths, ftsflags, NULL); |
56 |
|
|
if (ftsp == NULL) |
57 |
|
|
return (-1); |
58 |
|
|
while ((cur = fts_read(ftsp)) != NULL) { |
59 |
|
|
switch (cur->fts_info) { |
60 |
|
|
case FTS_D: |
61 |
|
|
if (postorder) |
62 |
|
|
continue; |
63 |
|
|
fnflag = FTW_D; |
64 |
|
|
break; |
65 |
|
|
case FTS_DNR: |
66 |
|
|
fnflag = FTW_DNR; |
67 |
|
|
break; |
68 |
|
|
case FTS_DP: |
69 |
|
|
if (!postorder) |
70 |
|
|
continue; |
71 |
|
|
fnflag = FTW_DP; |
72 |
|
|
break; |
73 |
|
|
case FTS_F: |
74 |
|
|
case FTS_DEFAULT: |
75 |
|
|
fnflag = FTW_F; |
76 |
|
|
break; |
77 |
|
|
case FTS_NS: |
78 |
|
|
case FTS_NSOK: |
79 |
|
|
fnflag = FTW_NS; |
80 |
|
|
break; |
81 |
|
|
case FTS_SL: |
82 |
|
|
fnflag = FTW_SL; |
83 |
|
|
break; |
84 |
|
|
case FTS_SLNONE: |
85 |
|
|
fnflag = FTW_SLN; |
86 |
|
|
break; |
87 |
|
|
case FTS_DC: |
88 |
|
|
errno = ELOOP; |
89 |
|
|
/* FALLTHROUGH */ |
90 |
|
|
default: |
91 |
|
|
error = -1; |
92 |
|
|
goto done; |
93 |
|
|
} |
94 |
|
|
ftw.base = cur->fts_pathlen - cur->fts_namelen; |
95 |
|
|
ftw.level = cur->fts_level; |
96 |
|
|
error = fn(cur->fts_path, cur->fts_statp, fnflag, &ftw); |
97 |
|
|
if (error != 0) |
98 |
|
|
break; |
99 |
|
|
} |
100 |
|
|
done: |
101 |
|
|
sverrno = errno; |
102 |
|
|
if (fts_close(ftsp) != 0 && error == 0) |
103 |
|
|
error = -1; |
104 |
|
|
else |
105 |
|
|
errno = sverrno; |
106 |
|
|
return (error); |
107 |
|
|
} |