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/*
* 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
* $FreeBSD: src/include/fts.h,v 1.12 2008/01/26 17:09:40 yar Exp $
* $DragonFly: src/include/fts.h,v 1.3 2003/11/14 01:01:43 dillon Exp $
*/

#ifndef _FTS_H_
#define _FTS_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) */
size_t fts_nitems; /* elements in the sort array */
int (*fts_compar) /* compare function */
(const struct _ftsent * const *, const struct _ftsent * const *);

#define FTS_COMFOLLOW 0x001 /* follow command line symlinks */
#define FTS_LOGICAL 0x002 /* logical walk */
#define FTS_NOCHDIR 0x004 /* don't change directories */
#define FTS_NOSTAT 0x008 /* don't get stat info */
#define FTS_PHYSICAL 0x010 /* physical walk */
#define FTS_SEEDOT 0x020 /* return dot and dot-dot */
#define FTS_XDEV 0x040 /* don't cross devices */
#define FTS_WHITEOUT 0x080 /* return whiteout information */
#define FTS_OPTIONMASK 0x0ff /* valid user option mask */

#define FTS_NAMEONLY 0x100 /* (private) child names only */
#define FTS_STOP 0x200 /* (private) unrecoverable error */
int fts_options; /* fts_open options, global flags */
void *fts_clientptr; /* thunk for sort function */
} 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 long fts_number; /* local numeric value */
#define fts_bignum fts_number /* XXX non-std, should go away */
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
long 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 */
#define FTS_W 14 /* whiteout object */
int fts_info; /* user status for FTSENT structure */

#define FTS_DONTCHDIR 0x01 /* don't chdir .. to the parent */
#define FTS_SYMFOLLOW 0x02 /* followed a symlink to get here */
#define FTS_ISW 0x04 /* this is a whiteout object */
unsigned 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 */
int fts_instr; /* fts_set() instructions */

struct stat *fts_statp; /* stat(2) information */
char *fts_name; /* file name */
FTS *fts_fts; /* back pointer to main FTS */
} FTSENT;

#include <sys/cdefs.h>

__BEGIN_DECLS
FTSENT *fts_children(FTS *, int);
int fts_close(FTS *);
void *fts_get_clientptr(FTS *);
#define fts_get_clientptr(fts) ((fts)->fts_clientptr)
FTS *fts_get_stream(FTSENT *);
#define fts_get_stream(ftsent) ((ftsent)->fts_fts)
FTS *fts_open(char * const *, int,
int (*)(const FTSENT * const *, const FTSENT * const *));
FTSENT *fts_read(FTS *);
int fts_set(FTS *, FTSENT *, int);
void fts_set_clientptr(FTS *, void *);
__END_DECLS

#endif /* !_FTS_H_ */
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