/* libExt+gcc: $Id: fts.h,v 1.3 2000/08/22 22:20:23 amai 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. All advertising materials mentioning features or use of this software

 *    must display the following acknowledgement:

 *	This product includes software developed by the University of

 *	California, Berkeley and its contributors.

 * 4. 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_

#if defined(__cplusplus)

# ifndef __const__

#  define __const__  const

# endif

extern "C" {

#endif

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

	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 */

#if 0

#define	FTS_W		14		/* whiteout object */

#endif

	u_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 */

#if 0

#define	FTS_ISW		 0x04		/* this is a whiteout object */

#endif

	u_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 */

	u_short fts_instr;		/* fts_set() instructions */

	struct stat *fts_statp;		/* stat(2) information */

	char fts_name[1];		/* file name */

};

typedef struct _ftsent FTSENT;

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) */

	size_t fts_nitems;		/* elements in the sort array */

	int (*fts_compar)(const FTSENT **,const FTSENT **);	/* 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 */

#if 0

#define	FTS_WHITEOUT	0x0080		/* return whiteout information */

#endif

#define	FTS_CHDIRROOT	0x0100		/* chdir to root of tree not orig cwd */

#define	FTS_OPTIONMASK	0x0fff		/* 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;

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);

#ifdef	__cplusplus

}

#endif

#endif /* !_FTS_H_ */