text: /*	$OpenBSD: fts.h,v 1.12 2009/08/27 16:19:27 millert Exp $	*/
  /*	$NetBSD: fts.h,v 1.5 1994/12/28 01:41:50 mycroft Exp $	*/
  
  /*
   * Copyright (c) 1989, 1993
   *	The Regents of the University of California.  All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in the
   *    documentation and/or other materials provided with the distribution.
   * 3. Neither the name of the University nor the names of its contributors
   *    may be used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   * SUCH DAMAGE.
   *
   *	@(#)fts.h	8.3 (Berkeley) 8/14/94
   */
  
  #ifndef	_FTS_H_
  #define	_FTS_H_
  
  #include <sys/types.h>
  
  typedef struct {
  	struct _ftsent *fts_cur;	/* current node */
  	struct _ftsent *fts_child;	/* linked list of children */
  	struct _ftsent **fts_array;	/* sort array */
  	dev_t fts_dev;			/* starting device # */
  	char *fts_path;			/* path for this descent */
  	int fts_rfd;			/* fd for root */
  	size_t fts_pathlen;		/* sizeof(path) */
  	int fts_nitems;			/* elements in the sort array */
  	int (*fts_compar)();		/* compare function */
  
  #define	FTS_COMFOLLOW	0x0001		/* follow command line symlinks */
  #define	FTS_LOGICAL	0x0002		/* logical walk */
  #define	FTS_NOCHDIR	0x0004		/* don't change directories */
  #define	FTS_NOSTAT	0x0008		/* don't get stat info */
  #define	FTS_PHYSICAL	0x0010		/* physical walk */
  #define	FTS_SEEDOT	0x0020		/* return dot and dot-dot */
  #define	FTS_XDEV	0x0040		/* don't cross devices */
  #define	FTS_OPTIONMASK	0x00ff		/* valid user option mask */
  
  #define	FTS_NAMEONLY	0x1000		/* (private) child names only */
  #define	FTS_STOP	0x2000		/* (private) unrecoverable error */
  	int fts_options;		/* fts_open options, global flags */
  } FTS;
  
  typedef struct _ftsent {
  	struct _ftsent *fts_cycle;	/* cycle node */
  	struct _ftsent *fts_parent;	/* parent directory */
  	struct _ftsent *fts_link;	/* next file in directory */
  	long fts_number;	        /* local numeric value */
  	void *fts_pointer;	        /* local address value */
  	char *fts_accpath;		/* access path */
  	char *fts_path;			/* root path */
  	int fts_errno;			/* errno for this node */
  	int fts_symfd;			/* fd for symlink */
  	size_t fts_pathlen;		/* strlen(fts_path) */
  	size_t fts_namelen;		/* strlen(fts_name) */
  
  	ino_t fts_ino;			/* inode */
  	dev_t fts_dev;			/* device */
  	nlink_t fts_nlink;		/* link count */
  
  #define	FTS_ROOTPARENTLEVEL	-1
  #define	FTS_ROOTLEVEL		 0
  #define	FTS_MAXLEVEL		 0x7fff
  	short fts_level;		/* depth (-1 to N) */
  
  #define	FTS_D		 1		/* preorder directory */
  #define	FTS_DC		 2		/* directory that causes cycles */
  #define	FTS_DEFAULT	 3		/* none of the above */
  #define	FTS_DNR		 4		/* unreadable directory */
  #define	FTS_DOT		 5		/* dot or dot-dot */
  #define	FTS_DP		 6		/* postorder directory */
  #define	FTS_ERR		 7		/* error; errno is set */
  #define	FTS_F		 8		/* regular file */
  #define	FTS_INIT	 9		/* initialized only */
  #define	FTS_NS		10		/* stat(2) failed */
  #define	FTS_NSOK	11		/* no stat(2) requested */
  #define	FTS_SL		12		/* symbolic link */
  #define	FTS_SLNONE	13		/* symbolic link without target */
  	unsigned short fts_info;	/* user flags for FTSENT structure */
  
  #define	FTS_DONTCHDIR	 0x01		/* don't chdir .. to the parent */
  #define	FTS_SYMFOLLOW	 0x02		/* followed a symlink to get here */
  	unsigned short fts_flags;	/* private flags for FTSENT structure */
  
  #define	FTS_AGAIN	 1		/* read node again */
  #define	FTS_FOLLOW	 2		/* follow symbolic link */
  #define	FTS_NOINSTR	 3		/* no instructions */
  #define	FTS_SKIP	 4		/* discard node */
  	unsigned short fts_instr;	/* fts_set() instructions */
  
  	struct stat *fts_statp;		/* stat(2) information */
  	char fts_name[1];		/* file name */
  } FTSENT;
  
  __BEGIN_DECLS
  FTSENT	*fts_children(FTS *, int);
  int	 fts_close(FTS *);
  FTS	*fts_open(char * const *, int,
  	    int (*)(const FTSENT **, const FTSENT **));
  FTSENT	*fts_read(FTS *);
  int	 fts_set(FTS *, FTSENT *, int);
  __END_DECLS
  
  #endif /* !_FTS_H_ */
  