Add support for ftw and nftw

1 files changed, 150 insertions, 0 deletions

diff --git a/include/ftw.h b/include/ftw.h
new file mode 100644
index 000000000..4939297b3
--- /dev/null
+++ b/include/ftw.h
@@ -0,0 +1,150 @@
+/* Copyright (C) 1992,1996,1997,1998,1999,2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+/*
+ *	X/Open Portability Guide 4.2: ftw.h
+ */
+
+#ifndef _FTW_H
+#define	_FTW_H	1
+
+#include <features.h>
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+
+__BEGIN_DECLS
+
+/* Values for the FLAG argument to the user function passed to `ftw'
+   and 'nftw'.  */
+enum
+{
+  FTW_F,		/* Regular file.  */
+#define FTW_F	 FTW_F
+  FTW_D,		/* Directory.  */
+#define FTW_D	 FTW_D
+  FTW_DNR,		/* Unreadable directory.  */
+#define FTW_DNR	 FTW_DNR
+  FTW_NS,		/* Unstatable file.  */
+#define FTW_NS	 FTW_NS
+
+#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
+
+  FTW_SL,		/* Symbolic link.  */
+# define FTW_SL	 FTW_SL
+#endif
+
+#ifdef __USE_XOPEN_EXTENDED
+/* These flags are only passed from the `nftw' function.  */
+  FTW_DP,		/* Directory, all subdirs have been visited. */
+# define FTW_DP	 FTW_DP
+  FTW_SLN		/* Symbolic link naming non-existing file.  */
+# define FTW_SLN FTW_SLN
+
+#endif	/* extended X/Open */
+};
+
+
+#ifdef __USE_XOPEN_EXTENDED
+/* Flags for fourth argument of `nftw'.  */
+enum
+{
+  FTW_PHYS = 1,		/* Perform physical walk, ignore symlinks.  */
+# define FTW_PHYS	FTW_PHYS
+  FTW_MOUNT = 2,	/* Report only files on same file system as the
+			   argument.  */
+# define FTW_MOUNT	FTW_MOUNT
+  FTW_CHDIR = 4,	/* Change to current directory while processing it.  */
+# define FTW_CHDIR	FTW_CHDIR
+  FTW_DEPTH = 8		/* Report files in directory before directory itself.*/
+# define FTW_DEPTH	FTW_DEPTH
+};
+
+/* Structure used for fourth argument to callback function for `nftw'.  */
+struct FTW
+  {
+    int base;
+    int level;
+  };
+#endif	/* extended X/Open */
+
+
+/* Convenient types for callback functions.  */
+typedef int (*__ftw_func_t) (__const char *__filename,
+			     __const struct stat *__status, int __flag);
+#ifdef __USE_LARGEFILE64
+typedef int (*__ftw64_func_t) (__const char *__filename,
+			       __const struct stat64 *__status, int __flag);
+#endif
+#ifdef __USE_XOPEN_EXTENDED
+typedef int (*__nftw_func_t) (__const char *__filename,
+			      __const struct stat *__status, int __flag,
+			      struct FTW *__info);
+# ifdef __USE_LARGEFILE64
+typedef int (*__nftw64_func_t) (__const char *__filename,
+				__const struct stat64 *__status,
+				int __flag, struct FTW *__info);
+# endif
+#endif
+
+/* Call a function on every element in a directory tree.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+#ifndef __USE_FILE_OFFSET64
+extern int ftw (__const char *__dir, __ftw_func_t __func, int __descriptors);
+#else
+# ifdef __REDIRECT
+extern int __REDIRECT (ftw, (__const char *__dir, __ftw_func_t __func,
+			     int __descriptors), ftw64);
+# else
+#  define ftw ftw64
+# endif
+#endif
+#ifdef __USE_LARGEFILE64
+extern int ftw64 (__const char *__dir, __ftw64_func_t __func,
+		  int __descriptors);
+#endif
+
+#ifdef __USE_XOPEN_EXTENDED
+/* Call a function on every element in a directory tree.  FLAG allows
+   to specify the behaviour more detailed.
+
+   This function is a possible cancellation point and therefore not
+   marked with __THROW.  */
+# ifndef __USE_FILE_OFFSET64
+extern int nftw (__const char *__dir, __nftw_func_t __func, int __descriptors,
+		 int __flag);
+# else
+#  ifdef __REDIRECT
+extern int __REDIRECT (nftw, (__const char *__dir, __nftw_func_t __func,
+			      int __descriptors, int __flag), nftw64);
+#  else
+#   define nftw nftw64
+#  endif
+# endif
+# ifdef __USE_LARGEFILE64
+extern int nftw64 (__const char *__dir, __nftw64_func_t __func,
+		   int __descriptors, int __flag);
+# endif
+#endif
+
+__END_DECLS
+
+#endif	/* ftw.h */