/*      $NetBSD: fts.h,v 1.19 2009/08/16 19:33:38 christos 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_

#ifndef __fts_stat_t
#define __fts_stat_t    struct stat
#endif
#ifndef __fts_nlink_t
#define __fts_nlink_t   nlink_t
#endif
#ifndef __fts_ino_t
#define __fts_ino_t     ino_t
#endif
#ifndef __fts_length_t
#define __fts_length_t  unsigned int
#endif
#ifndef __fts_number_t
#define __fts_number_t  int64_t
#endif
#ifndef __fts_dev_t
#define __fts_dev_t     dev_t
#endif
#ifndef __fts_level_t
#define __fts_level_t   int
#endif

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 */
       unsigned int fts_pathlen;       /* sizeof(path) */
       unsigned int fts_nitems;        /* elements in the sort array */
       int (*fts_compar)               /* compare function */
               (const struct _ftsent **, const struct _ftsent **);

#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 */
} FTS;

typedef struct _ftsent {
       struct _ftsent *fts_cycle;      /* cycle node */
       struct _ftsent *fts_parent;     /* parent directory */
       struct _ftsent *fts_link;       /* next file in directory */
       __fts_number_t 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 */
       __fts_length_t fts_pathlen;     /* strlen(fts_path) */
       __fts_length_t fts_namelen;     /* strlen(fts_name) */

       __fts_ino_t fts_ino;            /* inode */
       __fts_dev_t fts_dev;            /* device */
       __fts_nlink_t fts_nlink;        /* link count */

#define FTS_ROOTPARENTLEVEL     -1
#define FTS_ROOTLEVEL            0
       __fts_level_t 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 */
       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 */
#define FTS_ISW          0x04           /* this is a whiteout object */
       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 */

       __fts_stat_t *fts_statp;        /* stat(2) information */
       char fts_name[1];               /* file name */
} FTSENT;

#include <sys/cdefs.h>

__BEGIN_DECLS
#ifndef __LIBC12_SOURCE__
FTSENT  *fts_children(FTS *, int)               __RENAME(__fts_children60);
int      fts_close(FTS *)                       __RENAME(__fts_close60);
FTS     *fts_open(char * const *, int,
   int (*)(const FTSENT **, const FTSENT **))  __RENAME(__fts_open60);
FTSENT  *fts_read(FTS *)                        __RENAME(__fts_read60);
int      fts_set(FTS *, FTSENT *, int)          __RENAME(__fts_set60);
#endif
__END_DECLS

#endif /* !_FTS_H_ */

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