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-rw-r--r--io/ftw.h81
1 files changed, 70 insertions, 11 deletions
diff --git a/io/ftw.h b/io/ftw.h
index e6d0b63626..70fb9e22fd 100644
--- a/io/ftw.h
+++ b/io/ftw.h
@@ -1,6 +1,5 @@
 /* Copyright (C) 1992, 1996, 1997 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
-   Contributed by Ian Lance Taylor (ian@airs.com).
 
    The GNU C Library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public License as
@@ -26,22 +25,82 @@
 #define	_FTW_H	1
 #include <features.h>
 
+#include <sys/types.h>
 #include <statbuf.h>
 
-/* The FLAG argument to the user function passed to ftw.  */
-#define FTW_F	0		/* Regular file.  */
-#define FTW_D	1		/* Directory.  */
-#define FTW_DNR	2		/* Unreadable directory.  */
-#define FTW_NS	3		/* Unstatable file.  */
 
 __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
+
+#ifdef __USE_XOPEN_EXTENDED
+
+  FTW_SL,		/* Symbolic link.  */
+# define FTW_SL	 FTW_SL
+
+/* 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) __P ((__const char *filename,
+				  __const struct stat *status, int flag));
+#ifdef __USE_XOPEN_EXTENDED
+typedef int (*__nftw_func_t) __P ((__const char *filename,
+				   __const struct stat *status, int flag,
+				   struct FTW *));
+#endif
+
 /* Call a function on every element in a directory tree.  */
-extern int ftw __P ((__const char *__dir,
-		     int (*__func) (__const char *__file,
-				    __const struct stat *__status,
-				    int __flag),
-		     int __descriptors));
+extern int ftw __P ((__const char *dir, __ftw_func_t func, int descriptors));
+
+#ifdef __USE_XOPEN_EXTENDED
+/* Call a function on every element in a directory tree.  FLAG allows
+   to specify the behaviour more detailed.  */
+extern int nftw __P ((__const char *dir, __nftw_func_t func,
+		      int descriptors, int flag));
+#endif
 
 __END_DECLS