1 /* Copyright (C) 1992,1996,1997,1998,1999,2003 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 * X/Open Portability Guide 4.2: ftw.h
28 #include <sys/types.h>
34 /* Values for the FLAG argument to the user function passed to `ftw'
38 FTW_F, /* Regular file. */
40 FTW_D, /* Directory. */
42 FTW_DNR, /* Unreadable directory. */
43 #define FTW_DNR FTW_DNR
44 FTW_NS, /* Unstatable file. */
47 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
49 FTW_SL, /* Symbolic link. */
50 # define FTW_SL FTW_SL
53 #ifdef __USE_XOPEN_EXTENDED
54 /* These flags are only passed from the `nftw' function. */
55 FTW_DP, /* Directory, all subdirs have been visited. */
56 # define FTW_DP FTW_DP
57 FTW_SLN /* Symbolic link naming non-existing file. */
58 # define FTW_SLN FTW_SLN
60 #endif /* extended X/Open */
64 #ifdef __USE_XOPEN_EXTENDED
65 /* Flags for fourth argument of `nftw'. */
68 FTW_PHYS = 1, /* Perform physical walk, ignore symlinks. */
69 # define FTW_PHYS FTW_PHYS
70 FTW_MOUNT = 2, /* Report only files on same file system as the
72 # define FTW_MOUNT FTW_MOUNT
73 FTW_CHDIR = 4, /* Change to current directory while processing it. */
74 # define FTW_CHDIR FTW_CHDIR
75 FTW_DEPTH = 8 /* Report files in directory before directory itself.*/
76 # define FTW_DEPTH FTW_DEPTH
79 /* Structure used for fourth argument to callback function for `nftw'. */
85 #endif /* extended X/Open */
88 /* Convenient types for callback functions. */
89 typedef int (*__ftw_func_t) (__const char *__filename,
90 __const struct stat *__status, int __flag);
91 #ifdef __USE_LARGEFILE64
92 typedef int (*__ftw64_func_t) (__const char *__filename,
93 __const struct stat64 *__status, int __flag);
95 #ifdef __USE_XOPEN_EXTENDED
96 typedef int (*__nftw_func_t) (__const char *__filename,
97 __const struct stat *__status, int __flag,
99 # ifdef __USE_LARGEFILE64
100 typedef int (*__nftw64_func_t) (__const char *__filename,
101 __const struct stat64 *__status,
102 int __flag, struct FTW *__info);
106 /* Call a function on every element in a directory tree.
108 This function is a possible cancellation point and therefore not
109 marked with __THROW. */
110 #ifndef __USE_FILE_OFFSET64
111 extern int ftw (__const char *__dir, __ftw_func_t __func, int __descriptors);
114 extern int __REDIRECT (ftw, (__const char *__dir, __ftw_func_t __func,
115 int __descriptors), ftw64);
120 #ifdef __USE_LARGEFILE64
121 extern int ftw64 (__const char *__dir, __ftw64_func_t __func,
125 #ifdef __USE_XOPEN_EXTENDED
126 /* Call a function on every element in a directory tree. FLAG allows
127 to specify the behaviour more detailed.
129 This function is a possible cancellation point and therefore not
130 marked with __THROW. */
131 # ifndef __USE_FILE_OFFSET64
132 extern int nftw (__const char *__dir, __nftw_func_t __func, int __descriptors,
136 extern int __REDIRECT (nftw, (__const char *__dir, __nftw_func_t __func,
137 int __descriptors, int __flag), nftw64);
142 # ifdef __USE_LARGEFILE64
143 extern int nftw64 (__const char *__dir, __nftw64_func_t __func,
144 int __descriptors, int __flag);