1<ftw.h>(0P) POSIX Programmer's Manual <ftw.h>(0P)
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6 ftw.h - file tree traversal
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9 #include <ftw.h>
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12 The <ftw.h> header shall define the FTW structure that includes at
13 least the following members:
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15
16 int base
17 int level
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19 The <ftw.h> header shall define macros for use as values of the third
20 argument to the application-supplied function that is passed as the
21 second argument to ftw() and nftw():
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23 FTW_F File.
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25 FTW_D Directory.
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27 FTW_DNR
28 Directory without read permission.
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30 FTW_DP Directory with subdirectories visited.
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32 FTW_NS Unknown type; stat() failed.
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34 FTW_SL Symbolic link.
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36 FTW_SLN
37 Symbolic link that names a nonexistent file.
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40 The <ftw.h> header shall define macros for use as values of the fourth
41 argument to nftw():
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43 FTW_PHYS
44 Physical walk, does not follow symbolic links. Otherwise, nftw()
45 follows links but does not walk down any path that crosses
46 itself.
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48 FTW_MOUNT
49 The walk does not cross a mount point.
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51 FTW_DEPTH
52 All subdirectories are visited before the directory itself.
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54 FTW_CHDIR
55 The walk changes to each directory before reading it.
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58 The following shall be declared as functions and may also be defined as
59 macros. Function prototypes shall be provided.
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62 int ftw(const char *, int (*)(const char *, const struct stat *,
63 int), int);
64 int nftw(const char *, int (*)(const char *, const struct stat *,
65 int, struct FTW*), int, int);
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67 The <ftw.h> header shall define the stat structure and the symbolic
68 names for st_mode and the file type test macros as described in
69 <sys/stat.h> .
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71 Inclusion of the <ftw.h> header may also make visible all symbols from
72 <sys/stat.h>.
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74 The following sections are informative.
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77 None.
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80 None.
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83 None.
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86 <sys/stat.h>, the System Interfaces volume of IEEE Std 1003.1-2001,
87 ftw(), nftw()
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90 Portions of this text are reprinted and reproduced in electronic form
91 from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
92 -- Portable Operating System Interface (POSIX), The Open Group Base
93 Specifications Issue 6, Copyright (C) 2001-2003 by the Institute of
94 Electrical and Electronics Engineers, Inc and The Open Group. In the
95 event of any discrepancy between this version and the original IEEE and
96 The Open Group Standard, the original IEEE and The Open Group Standard
97 is the referee document. The original Standard can be obtained online
98 at http://www.opengroup.org/unix/online.html .
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102IEEE/The Open Group 2003 <ftw.h>(0P)