Remove from CVS, since the bootstrap script generates them automatically.

1 files changed, 0 insertions, 1468 deletions

diff --git a/lib/fts.c b/lib/fts.c
deleted file mode 100644
index ea33805ea..000000000
--- a/lib/fts.c
+++ /dev/null
@@ -1,1468 +0,0 @@
-/* Traverse a file hierarchy.
-
-   Copyright (C) 2004, 2005, 2006 Free Software Foundation, Inc.
-
-   This program is free software; you can redistribute it and/or modify
-   it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
-
-   This program is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-   GNU General Public License for more details.
-
-   You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
-
-/*-
- * Copyright (c) 1990, 1993, 1994
- *	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.
- * 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.
- */
-
-#ifdef HAVE_CONFIG_H
-# include <config.h>
-#endif
-
-#if defined(LIBC_SCCS) && !defined(lint)
-static char sccsid[] = "@(#)fts.c	8.6 (Berkeley) 8/14/94";
-#endif /* LIBC_SCCS and not lint */
-
-#include "fts_.h"
-
-#if HAVE_SYS_PARAM_H || defined _LIBC
-# include <sys/param.h>
-#endif
-#ifdef _LIBC
-# include <include/sys/stat.h>
-#else
-# include <sys/stat.h>
-#endif
-#include <fcntl.h>
-#include <errno.h>
-#include "dirfd.h"
-#include <stdbool.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-#if ! _LIBC
-# include "fcntl--.h"
-# include "lstat.h"
-# include "openat.h"
-# include "unistd--.h"
-#endif
-
-#include <dirent.h>
-#ifndef _D_EXACT_NAMLEN
-# define _D_EXACT_NAMLEN(dirent) strlen ((dirent)->d_name)
-#endif
-
-#ifdef _LIBC
-# undef close
-# define close __close
-# undef closedir
-# define closedir __closedir
-# undef fchdir
-# define fchdir __fchdir
-# undef open
-# define open __open
-# undef opendir
-# define opendir __opendir
-# undef readdir
-# define readdir __readdir
-#else
-# undef internal_function
-# define internal_function /* empty */
-#endif
-
-#ifndef __set_errno
-# define __set_errno(Val) errno = (Val)
-#endif
-
-#ifndef __attribute__
-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__
-#  define __attribute__(x) /* empty */
-# endif
-#endif
-
-#ifndef ATTRIBUTE_UNUSED
-# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
-#endif
-
-#if !defined O_NOFOLLOW
-# define O_NOFOLLOW 0
-#endif
-
-/* If this host provides the openat function, then we can avoid
-   attempting to open "." in some initialization code below.  */
-#ifdef HAVE_OPENAT
-# define HAVE_OPENAT_SUPPORT 1
-#else
-# define HAVE_OPENAT_SUPPORT 0
-#endif
-
-static FTSENT	*fts_alloc (FTS *, const char *, size_t) internal_function;
-static FTSENT	*fts_build (FTS *, int) internal_function;
-static void	 fts_lfree (FTSENT *) internal_function;
-static void	 fts_load (FTS *, FTSENT *) internal_function;
-static size_t	 fts_maxarglen (char * const *) internal_function;
-static void	 fts_padjust (FTS *, FTSENT *) internal_function;
-static bool	 fts_palloc (FTS *, size_t) internal_function;
-static FTSENT	*fts_sort (FTS *, FTSENT *, size_t) internal_function;
-static unsigned short int fts_stat (FTS *, FTSENT *, bool) internal_function;
-static int      fts_safe_changedir (FTS *, FTSENT *, int, const char *)
-     internal_function;
-
-#if _LGPL_PACKAGE
-static bool enter_dir (FTS *fts, FTSENT *ent) { return true; }
-static void leave_dir (FTS *fts, FTSENT *ent) {}
-static bool setup_dir (FTS *fts) { return true; }
-static void free_dir (FTS *fts) {}
-#else
-# include "fcntl--.h"
-# include "fts-cycle.c"
-#endif
-
-#ifndef MAX
-# define MAX(a,b) ((a) > (b) ? (a) : (b))
-#endif
-
-#ifndef SIZE_MAX
-# define SIZE_MAX ((size_t) -1)
-#endif
-
-#ifndef O_DIRECTORY
-# define O_DIRECTORY 0
-#endif
-
-#define ISDOT(a)	(a[0] == '.' && (!a[1] || (a[1] == '.' && !a[2])))
-#define STREQ(a, b)	(strcmp ((a), (b)) == 0)
-
-#define CLR(opt)	(sp->fts_options &= ~(opt))
-#define ISSET(opt)	(sp->fts_options & (opt))
-#define SET(opt)	(sp->fts_options |= (opt))
-
-#define RESTORE_INITIAL_CWD(sp)	FCHDIR (sp, (ISSET (FTS_CWDFD) \
-					     ? AT_FDCWD	       \
-					     : sp->fts_rfd))
-
-#define FCHDIR(sp, fd)	(!ISSET(FTS_NOCHDIR)		    \
-			 && (ISSET(FTS_CWDFD)		    \
-                             ? (cwd_advance_fd (sp, fd), 0) \
-			     : fchdir(fd)))
-
-
-/* fts_build flags */
-#define BCHILD		1		/* fts_children */
-#define BNAMES		2		/* fts_children, names only */
-#define BREAD		3		/* fts_read */
-
-#if FTS_DEBUG
-# include <inttypes.h>
-# include <stdint.h>
-# include <stdio.h>
-bool fts_debug = false;
-# define Dprintf(x) do { if (fts_debug) printf x; } while (0)
-#else
-# define Dprintf(x)
-#endif
-
-#define LEAVE_DIR(Fts, Ent, Tag)				\
-  do								\
-    {								\
-      Dprintf (("  %s-leaving: %s\n", Tag, (Ent)->fts_path));	\
-      leave_dir (Fts, Ent);					\
-    }								\
-  while (false)
-
-/* file-descriptor-relative opendir.  */
-/* FIXME: if others need this function, move it into lib/openat.c */
-static inline DIR *
-internal_function
-opendirat (int fd, char const *dir)
-{
-  int new_fd = openat (fd, dir, O_RDONLY);
-  DIR *dirp;
-
-  if (new_fd < 0)
-    return NULL;
-  dirp = fdopendir (new_fd);
-  if (dirp == NULL)
-    {
-      int saved_errno = errno;
-      close (new_fd);
-      errno = saved_errno;
-    }
-  return dirp;
-}
-
-/* Virtual fchdir.  Advance SP's working directory
-   file descriptor, SP->fts_cwd_fd, to FD, and close
-   the previous one, ignoring any error.  */
-static void
-internal_function
-cwd_advance_fd (FTS *sp, int fd)
-{
-  int old = sp->fts_cwd_fd;
-  if (old == fd && old != AT_FDCWD)
-    abort ();
-  sp->fts_cwd_fd = fd;
-  if (0 <= old)
-    close (old); /* ignore any close failure */
-}
-
-/* Open the directory DIR if possible, and return a file
-   descriptor.  Return -1 and set errno on failure.  It doesn't matter
-   whether the file descriptor has read or write access.  */
-
-static inline int
-internal_function
-diropen (FTS const *sp, char const *dir)
-{
-  int open_flags = (O_RDONLY | O_DIRECTORY | O_NOCTTY | O_NONBLOCK
-		    | (ISSET (FTS_PHYSICAL) ? O_NOFOLLOW : 0));
-
-  return (ISSET (FTS_CWDFD)
-	  ? openat (sp->fts_cwd_fd, dir, open_flags)
-	  : open (dir, open_flags));
-}
-
-FTS *
-fts_open (char * const *argv,
-	  register int options,
-	  int (*compar) (FTSENT const **, FTSENT const **))
-{
-	register FTS *sp;
-	register FTSENT *p, *root;
-	register size_t nitems;
-	FTSENT *parent = NULL;
-	FTSENT *tmp = NULL;	/* pacify gcc */
-	size_t len;
-
-	/* Options check. */
-	if (options & ~FTS_OPTIONMASK) {
-		__set_errno (EINVAL);
-		return (NULL);
-	}
-	if ((options & FTS_NOCHDIR) && (options & FTS_CWDFD)) {
-		__set_errno (EINVAL);
-		return (NULL);
-	}
-	if ( ! (options & (FTS_LOGICAL | FTS_PHYSICAL))) {
-		__set_errno (EINVAL);
-		return (NULL);
-	}
-
-	/* Allocate/initialize the stream */
-	if ((sp = malloc(sizeof(FTS))) == NULL)
-		return (NULL);
-	memset(sp, 0, sizeof(FTS));
-	sp->fts_compar = compar;
-	sp->fts_options = options;
-
-	/* Logical walks turn on NOCHDIR; symbolic links are too hard. */
-	if (ISSET(FTS_LOGICAL)) {
-		SET(FTS_NOCHDIR);
-		CLR(FTS_CWDFD);
-	}
-
-	/* Initialize fts_cwd_fd.  */
-	sp->fts_cwd_fd = AT_FDCWD;
-	if ( ISSET(FTS_CWDFD) && ! HAVE_OPENAT_SUPPORT)
-	  {
-	    /* While it isn't technically necessary to open "." this
-	       early, doing it here saves us the trouble of ensuring
-	       later (where it'd be messier) that "." can in fact
-	       be opened.  If not, revert to FTS_NOCHDIR mode.  */
-	    int fd = open (".", O_RDONLY);
-	    if (fd < 0)
-	      {
-		/* Even if `.' is unreadable, don't revert to FTS_NOCHDIR mode
-		   on systems like Linux+PROC_FS, where our openat emulation
-		   is good enough.  Note: on a system that emulates
-		   openat via /proc, this technique can still fail, but
-		   only in extreme conditions, e.g., when the working
-		   directory cannot be saved (i.e. save_cwd fails) --
-		   and that happens only on Linux only when "." is unreadable
-		   and the CWD would be longer than PATH_MAX.
-		   FIXME: once Linux kernel openat support is well established,
-		   replace the above open call and this entire if/else block
-		   with the body of the if-block below.  */
-		if ( openat_needs_fchdir ())
-		  {
-		    SET(FTS_NOCHDIR);
-		    CLR(FTS_CWDFD);
-		  }
-	      }
-	    else
-	      {
-		close (fd);
-	      }
-	  }
-
-	/*
-	 * Start out with 1K of file name space, and enough, in any case,
-	 * to hold the user's file names.
-	 */
-#ifndef MAXPATHLEN
-# define MAXPATHLEN 1024
-#endif
-	{
-	  size_t maxarglen = fts_maxarglen(argv);
-	  if (! fts_palloc(sp, MAX(maxarglen, MAXPATHLEN)))
-		  goto mem1;
-	}
-
-	/* Allocate/initialize root's parent. */
-	if (*argv != NULL) {
-		if ((parent = fts_alloc(sp, "", 0)) == NULL)
-			goto mem2;
-		parent->fts_level = FTS_ROOTPARENTLEVEL;
-	  }
-
-	/* Allocate/initialize root(s). */
-	for (root = NULL, nitems = 0; *argv != NULL; ++argv, ++nitems) {
-		/* Don't allow zero-length file names. */
-		if ((len = strlen(*argv)) == 0) {
-			__set_errno (ENOENT);
-			goto mem3;
-		}
-
-		if ((p = fts_alloc(sp, *argv, len)) == NULL)
-			goto mem3;
-		p->fts_level = FTS_ROOTLEVEL;
-		p->fts_parent = parent;
-		p->fts_accpath = p->fts_name;
-		p->fts_info = fts_stat(sp, p, ISSET(FTS_COMFOLLOW) != 0);
-
-		/* Command-line "." and ".." are real directories. */
-		if (p->fts_info == FTS_DOT)
-			p->fts_info = FTS_D;
-
-		/*
-		 * If comparison routine supplied, traverse in sorted
-		 * order; otherwise traverse in the order specified.
-		 */
-		if (compar) {
-			p->fts_link = root;
-			root = p;
-		} else {
-			p->fts_link = NULL;
-			if (root == NULL)
-				tmp = root = p;
-			else {
-				tmp->fts_link = p;
-				tmp = p;
-			}
-		}
-	}
-	if (compar && nitems > 1)
-		root = fts_sort(sp, root, nitems);
-
-	/*
-	 * Allocate a dummy pointer and make fts_read think that we've just
-	 * finished the node before the root(s); set p->fts_info to FTS_INIT
-	 * so that everything about the "current" node is ignored.
-	 */
-	if ((sp->fts_cur = fts_alloc(sp, "", 0)) == NULL)
-		goto mem3;
-	sp->fts_cur->fts_link = root;
-	sp->fts_cur->fts_info = FTS_INIT;
-	if (! setup_dir (sp))
-	  goto mem3;
-
-	/*
-	 * If using chdir(2), grab a file descriptor pointing to dot to ensure
-	 * that we can get back here; this could be avoided for some file names,
-	 * but almost certainly not worth the effort.  Slashes, symbolic links,
-	 * and ".." are all fairly nasty problems.  Note, if we can't get the
-	 * descriptor we run anyway, just more slowly.
-	 */
-	if (!ISSET(FTS_NOCHDIR) && !ISSET(FTS_CWDFD)
-	    && (sp->fts_rfd = diropen (sp, ".")) < 0)
-		SET(FTS_NOCHDIR);
-
-	return (sp);
-
-mem3:	fts_lfree(root);
-	free(parent);
-mem2:	free(sp->fts_path);
-mem1:	free(sp);
-	return (NULL);
-}
-
-static void
-internal_function
-fts_load (FTS *sp, register FTSENT *p)
-{
-	register size_t len;
-	register char *cp;
-
-	/*
-	 * Load the stream structure for the next traversal.  Since we don't
-	 * actually enter the directory until after the preorder visit, set
-	 * the fts_accpath field specially so the chdir gets done to the right
-	 * place and the user can access the first node.  From fts_open it's
-	 * known that the file name will fit.
-	 */
-	len = p->fts_pathlen = p->fts_namelen;
-	memmove(sp->fts_path, p->fts_name, len + 1);
-	if ((cp = strrchr(p->fts_name, '/')) && (cp != p->fts_name || cp[1])) {
-		len = strlen(++cp);
-		memmove(p->fts_name, cp, len + 1);
-		p->fts_namelen = len;
-	}
-	p->fts_accpath = p->fts_path = sp->fts_path;
-	sp->fts_dev = p->fts_statp->st_dev;
-}
-
-int
-fts_close (FTS *sp)
-{
-	register FTSENT *freep, *p;
-	int saved_errno = 0;
-
-	/*
-	 * This still works if we haven't read anything -- the dummy structure
-	 * points to the root list, so we step through to the end of the root
-	 * list which has a valid parent pointer.
-	 */
-	if (sp->fts_cur) {
-		for (p = sp->fts_cur; p->fts_level >= FTS_ROOTLEVEL;) {
-			freep = p;
-			p = p->fts_link != NULL ? p->fts_link : p->fts_parent;
-			free(freep);
-		}
-		free(p);
-	}
-
-	/* Free up child linked list, sort array, file name buffer. */
-	if (sp->fts_child)
-		fts_lfree(sp->fts_child);
-	if (sp->fts_array)
-		free(sp->fts_array);
-	free(sp->fts_path);
-
-	if (ISSET(FTS_CWDFD))
-	  {
-	    if (0 <= sp->fts_cwd_fd)
-	      close (sp->fts_cwd_fd);
-	  }
-	else if (!ISSET(FTS_NOCHDIR))
-	  {
-	    /* Return to original directory, save errno if necessary. */
-	    if (fchdir(sp->fts_rfd))
-	      saved_errno = errno;
-	    close(sp->fts_rfd);
-	  }
-
-	free_dir (sp);
-
-	/* Free up the stream pointer. */
-	free(sp);
-
-	/* Set errno and return. */
-	if (saved_errno) {
-		__set_errno (saved_errno);
-		return (-1);
-	}
-
-	return (0);
-}
-
-/*
- * Special case of "/" at the end of the file name so that slashes aren't
- * appended which would cause file names to be written as "....//foo".
- */
-#define NAPPEND(p)							\
-	(p->fts_path[p->fts_pathlen - 1] == '/'				\
-	    ? p->fts_pathlen - 1 : p->fts_pathlen)
-
-FTSENT *
-fts_read (register FTS *sp)
-{
-	register FTSENT *p, *tmp;
-	register unsigned short int instr;
-	register char *t;
-
-	/* If finished or unrecoverable error, return NULL. */
-	if (sp->fts_cur == NULL || ISSET(FTS_STOP))
-		return (NULL);
-
-	/* Set current node pointer. */
-	p = sp->fts_cur;
-
-	/* Save and zero out user instructions. */
-	instr = p->fts_instr;
-	p->fts_instr = FTS_NOINSTR;
-
-	/* Any type of file may be re-visited; re-stat and re-turn. */
-	if (instr == FTS_AGAIN) {
-		p->fts_info = fts_stat(sp, p, false);
-		return (p);
-	}
-	Dprintf (("fts_read: p=%s\n",
-		  p->fts_info == FTS_INIT ? "" : p->fts_path));
-
-	/*
-	 * Following a symlink -- SLNONE test allows application to see
-	 * SLNONE and recover.  If indirecting through a symlink, have
-	 * keep a pointer to current location.  If unable to get that
-	 * pointer, follow fails.
-	 */
-	if (instr == FTS_FOLLOW &&
-	    (p->fts_info == FTS_SL || p->fts_info == FTS_SLNONE)) {
-		p->fts_info = fts_stat(sp, p, true);
-		if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR)) {
-			if ((p->fts_symfd = diropen (sp, ".")) < 0) {
-				p->fts_errno = errno;
-				p->fts_info = FTS_ERR;
-			} else
-				p->fts_flags |= FTS_SYMFOLLOW;
-		}
-		goto check_for_dir;
-	}
-
-	/* Directory in pre-order. */
-	if (p->fts_info == FTS_D) {
-		/* If skipped or crossed mount point, do post-order visit. */
-		if (instr == FTS_SKIP ||
-		    (ISSET(FTS_XDEV) && p->fts_statp->st_dev != sp->fts_dev)) {
-			if (p->fts_flags & FTS_SYMFOLLOW)
-				(void)close(p->fts_symfd);
-			if (sp->fts_child) {
-				fts_lfree(sp->fts_child);
-				sp->fts_child = NULL;
-			}
-			p->fts_info = FTS_DP;
-			LEAVE_DIR (sp, p, "1");
-			return (p);
-		}
-
-		/* Rebuild if only read the names and now traversing. */
-		if (sp->fts_child != NULL && ISSET(FTS_NAMEONLY)) {
-			CLR(FTS_NAMEONLY);
-			fts_lfree(sp->fts_child);
-			sp->fts_child = NULL;
-		}
-
-		/*
-		 * Cd to the subdirectory.
-		 *
-		 * If have already read and now fail to chdir, whack the list
-		 * to make the names come out right, and set the parent errno
-		 * so the application will eventually get an error condition.
-		 * Set the FTS_DONTCHDIR flag so that when we logically change
-		 * directories back to the parent we don't do a chdir.
-		 *
-		 * If haven't read do so.  If the read fails, fts_build sets
-		 * FTS_STOP or the fts_info field of the node.
-		 */
-		if (sp->fts_child != NULL) {
-			if (fts_safe_changedir(sp, p, -1, p->fts_accpath)) {
-				p->fts_errno = errno;
-				p->fts_flags |= FTS_DONTCHDIR;
-				for (p = sp->fts_child; p != NULL;
-				     p = p->fts_link)
-					p->fts_accpath =
-					    p->fts_parent->fts_accpath;
-			}
-		} else if ((sp->fts_child = fts_build(sp, BREAD)) == NULL) {
-			if (ISSET(FTS_STOP))
-				return (NULL);
-			/* If fts_build's call to fts_safe_changedir failed
-			   because it was not able to fchdir into a
-			   subdirectory, tell the caller.  */
-			if (p->fts_errno)
-				p->fts_info = FTS_ERR;
-			LEAVE_DIR (sp, p, "2");
-			return (p);
-		}
-		p = sp->fts_child;
-		sp->fts_child = NULL;
-		goto name;
-	}
-
-	/* Move to the next node on this level. */
-next:	tmp = p;
-	if ((p = p->fts_link) != NULL) {
-		free(tmp);
-
-		/*
-		 * If reached the top, return to the original directory (or
-		 * the root of the tree), and load the file names for the next
-		 * root.
-		 */
-		if (p->fts_level == FTS_ROOTLEVEL) {
-			if (RESTORE_INITIAL_CWD(sp)) {
-				SET(FTS_STOP);
-				sp->fts_cur = p;
-				return (NULL);
-			}
-			fts_load(sp, p);
-			goto check_for_dir;
-		}
-
-		/*
-		 * User may have called fts_set on the node.  If skipped,
-		 * ignore.  If followed, get a file descriptor so we can
-		 * get back if necessary.
-		 */
-		if (p->fts_instr == FTS_SKIP)
-			goto next;
-		if (p->fts_instr == FTS_FOLLOW) {
-			p->fts_info = fts_stat(sp, p, true);
-			if (p->fts_info == FTS_D && !ISSET(FTS_NOCHDIR)) {
-				if ((p->fts_symfd = diropen (sp, ".")) < 0) {
-					p->fts_errno = errno;
-					p->fts_info = FTS_ERR;
-				} else
-					p->fts_flags |= FTS_SYMFOLLOW;
-			}
-			p->fts_instr = FTS_NOINSTR;
-		}
-
-name:		t = sp->fts_path + NAPPEND(p->fts_parent);
-		*t++ = '/';
-		memmove(t, p->fts_name, p->fts_namelen + 1);
-check_for_dir:
-		sp->fts_cur = p;
-		if (p->fts_info == FTS_D)
-		  {
-		    Dprintf (("  %s-entering: %s\n", sp, p->fts_path));
-		    if (! enter_dir (sp, p))
-		      {
-			__set_errno (ENOMEM);
-			return NULL;
-		      }
-		  }
-		return p;
-	}
-
-	/* Move up to the parent node. */
-	p = tmp->fts_parent;
-	free(tmp);
-
-	if (p->fts_level == FTS_ROOTPARENTLEVEL) {
-		/*
-		 * Done; free everything up and set errno to 0 so the user
-		 * can distinguish between error and EOF.
-		 */
-		free(p);
-		__set_errno (0);
-		return (sp->fts_cur = NULL);
-	}
-
-	/* NUL terminate the file name.  */
-	sp->fts_path[p->fts_pathlen] = '\0';
-
-	/*
-	 * Return to the parent directory.  If at a root node, restore
-	 * the initial working directory.  If we came through a symlink,
-	 * go back through the file descriptor.  Otherwise, move up
-	 * one level, via "..".
-	 */
-	if (p->fts_level == FTS_ROOTLEVEL) {
-		if (RESTORE_INITIAL_CWD(sp)) {
-			p->fts_errno = errno;
-			SET(FTS_STOP);
-		}
-	} else if (p->fts_flags & FTS_SYMFOLLOW) {
-		if (FCHDIR(sp, p->fts_symfd)) {
-			int saved_errno = errno;
-			(void)close(p->fts_symfd);
-			__set_errno (saved_errno);
-			p->fts_errno = errno;
-			SET(FTS_STOP);
-		}
-		(void)close(p->fts_symfd);
-	} else if (!(p->fts_flags & FTS_DONTCHDIR) &&
-		   fts_safe_changedir(sp, p->fts_parent, -1, "..")) {
-		p->fts_errno = errno;
-		SET(FTS_STOP);
-	}
-	p->fts_info = p->fts_errno ? FTS_ERR : FTS_DP;
-	if (p->fts_errno == 0)
-		LEAVE_DIR (sp, p, "3");
-	sp->fts_cur = p;
-	return ISSET(FTS_STOP) ? NULL : p;
-}
-
-/*
- * Fts_set takes the stream as an argument although it's not used in this
- * implementation; it would be necessary if anyone wanted to add global
- * semantics to fts using fts_set.  An error return is allowed for similar
- * reasons.
- */
-/* ARGSUSED */
-int
-fts_set(FTS *sp ATTRIBUTE_UNUSED, FTSENT *p, int instr)
-{
-	if (instr != 0 && instr != FTS_AGAIN && instr != FTS_FOLLOW &&
-	    instr != FTS_NOINSTR && instr != FTS_SKIP) {
-		__set_errno (EINVAL);
-		return (1);
-	}
-	p->fts_instr = instr;
-	return (0);
-}
-
-FTSENT *
-fts_children (register FTS *sp, int instr)
-{
-	register FTSENT *p;
-	int fd;
-
-	if (instr != 0 && instr != FTS_NAMEONLY) {
-		__set_errno (EINVAL);
-		return (NULL);
-	}
-
-	/* Set current node pointer. */
-	p = sp->fts_cur;
-
-	/*
-	 * Errno set to 0 so user can distinguish empty directory from
-	 * an error.
-	 */
-	__set_errno (0);
-
-	/* Fatal errors stop here. */
-	if (ISSET(FTS_STOP))
-		return (NULL);
-
-	/* Return logical hierarchy of user's arguments. */
-	if (p->fts_info == FTS_INIT)
-		return (p->fts_link);
-
-	/*
-	 * If not a directory being visited in pre-order, stop here.  Could
-	 * allow FTS_DNR, assuming the user has fixed the problem, but the
-	 * same effect is available with FTS_AGAIN.
-	 */
-	if (p->fts_info != FTS_D /* && p->fts_info != FTS_DNR */)
-		return (NULL);
-
-	/* Free up any previous child list. */
-	if (sp->fts_child != NULL)
-		fts_lfree(sp->fts_child);
-
-	if (instr == FTS_NAMEONLY) {
-		SET(FTS_NAMEONLY);
-		instr = BNAMES;
-	} else
-		instr = BCHILD;
-
-	/*
-	 * If using chdir on a relative file name and called BEFORE fts_read
-	 * does its chdir to the root of a traversal, we can lose -- we need to
-	 * chdir into the subdirectory, and we don't know where the current
-	 * directory is, so we can't get back so that the upcoming chdir by
-	 * fts_read will work.
-	 */
-	if (p->fts_level != FTS_ROOTLEVEL || p->fts_accpath[0] == '/' ||
-	    ISSET(FTS_NOCHDIR))
-		return (sp->fts_child = fts_build(sp, instr));
-
-	if ((fd = diropen (sp, ".")) < 0)
-		return (sp->fts_child = NULL);
-	sp->fts_child = fts_build(sp, instr);
-	if (ISSET(FTS_CWDFD))
-	  {
-	    cwd_advance_fd (sp, fd);
-	  }
-	else
-	  {
-	    if (fchdir(fd))
-	      {
-		int saved_errno = errno;
-		close (fd);
-		__set_errno (saved_errno);
-		return NULL;
-	      }
-	    close (fd);
-	  }
-	return (sp->fts_child);
-}
-
-/*
- * This is the tricky part -- do not casually change *anything* in here.  The
- * idea is to build the linked list of entries that are used by fts_children
- * and fts_read.  There are lots of special cases.
- *
- * The real slowdown in walking the tree is the stat calls.  If FTS_NOSTAT is
- * set and it's a physical walk (so that symbolic links can't be directories),
- * we can do things quickly.  First, if it's a 4.4BSD file system, the type
- * of the file is in the directory entry.  Otherwise, we assume that the number
- * of subdirectories in a node is equal to the number of links to the parent.
- * The former skips all stat calls.  The latter skips stat calls in any leaf
- * directories and for any files after the subdirectories in the directory have
- * been found, cutting the stat calls by about 2/3.
- */
-static FTSENT *
-internal_function
-fts_build (register FTS *sp, int type)
-{
-	register struct dirent *dp;
-	register FTSENT *p, *head;
-	register size_t nitems;
-	FTSENT *cur, *tail;
-	DIR *dirp;
-	void *oldaddr;
-	int saved_errno;
-	bool descend;
-	bool doadjust;
-	ptrdiff_t level;
-	nlink_t nlinks;
-	bool nostat;
-	size_t len, maxlen, new_len;
-	char *cp;
-
-	/* Set current node pointer. */
-	cur = sp->fts_cur;
-
-	/*
-	 * Open the directory for reading.  If this fails, we're done.
-	 * If being called from fts_read, set the fts_info field.
-	 */
-#if defined FTS_WHITEOUT && 0
-	if (ISSET(FTS_WHITEOUT))
-		oflag = DTF_NODUP|DTF_REWIND;
-	else
-		oflag = DTF_HIDEW|DTF_NODUP|DTF_REWIND;
-#else
-# define __opendir2(file, flag) \
-	( ! ISSET(FTS_NOCHDIR) && ISSET(FTS_CWDFD) \
-	  ? opendirat(sp->fts_cwd_fd, file)	   \
-	  : opendir(file))
-#endif
-       if ((dirp = __opendir2(cur->fts_accpath, oflag)) == NULL) {
-		if (type == BREAD) {
-			cur->fts_info = FTS_DNR;
-			cur->fts_errno = errno;
-		}
-		return (NULL);
-	}
-
-	/*
-	 * Nlinks is the number of possible entries of type directory in the
-	 * directory if we're cheating on stat calls, 0 if we're not doing
-	 * any stat calls at all, (nlink_t) -1 if we're statting everything.
-	 */
-	if (type == BNAMES) {
-		nlinks = 0;
-		/* Be quiet about nostat, GCC. */
-		nostat = false;
-	} else if (ISSET(FTS_NOSTAT) && ISSET(FTS_PHYSICAL)) {
-		nlinks = (cur->fts_statp->st_nlink
-			  - (ISSET(FTS_SEEDOT) ? 0 : 2));
-		nostat = true;
-	} else {
-		nlinks = -1;
-		nostat = false;
-	}
-
-	/*
-	 * If we're going to need to stat anything or we want to descend
-	 * and stay in the directory, chdir.  If this fails we keep going,
-	 * but set a flag so we don't chdir after the post-order visit.
-	 * We won't be able to stat anything, but we can still return the
-	 * names themselves.  Note, that since fts_read won't be able to
-	 * chdir into the directory, it will have to return different file
-	 * names than before, i.e. "a/b" instead of "b".  Since the node
-	 * has already been visited in pre-order, have to wait until the
-	 * post-order visit to return the error.  There is a special case
-	 * here, if there was nothing to stat then it's not an error to
-	 * not be able to stat.  This is all fairly nasty.  If a program
-	 * needed sorted entries or stat information, they had better be
-	 * checking FTS_NS on the returned nodes.
-	 */
-	if (nlinks || type == BREAD) {
-		int dir_fd = dirfd(dirp);
-		if (ISSET(FTS_CWDFD) && 0 <= dir_fd)
-		  dir_fd = dup (dir_fd);
-		if (dir_fd < 0 || fts_safe_changedir(sp, cur, dir_fd, NULL)) {
-			if (nlinks && type == BREAD)
-				cur->fts_errno = errno;
-			cur->fts_flags |= FTS_DONTCHDIR;
-			descend = false;
-			closedir(dirp);
-			if (ISSET(FTS_CWDFD) && 0 <= dir_fd)
-				close (dir_fd);
-			dirp = NULL;
-		} else
-			descend = true;
-	} else
-		descend = false;
-
-	/*
-	 * Figure out the max file name length that can be stored in the
-	 * current buffer -- the inner loop allocates more space as necessary.
-	 * We really wouldn't have to do the maxlen calculations here, we
-	 * could do them in fts_read before returning the name, but it's a
-	 * lot easier here since the length is part of the dirent structure.
-	 *
-	 * If not changing directories set a pointer so that can just append
-	 * each new component into the file name.
-	 */
-	len = NAPPEND(cur);
-	if (ISSET(FTS_NOCHDIR)) {
-		cp = sp->fts_path + len;
-		*cp++ = '/';
-	} else {
-		/* GCC, you're too verbose. */
-		cp = NULL;
-	}
-	len++;
-	maxlen = sp->fts_pathlen - len;
-
-	level = cur->fts_level + 1;
-
-	/* Read the directory, attaching each entry to the `link' pointer. */
-	doadjust = false;
-	for (head = tail = NULL, nitems = 0; dirp && (dp = readdir(dirp));) {
-		if (!ISSET(FTS_SEEDOT) && ISDOT(dp->d_name))
-			continue;
-
-		if ((p = fts_alloc (sp, dp->d_name,
-				    _D_EXACT_NAMLEN (dp))) == NULL)
-			goto mem1;
-		if (_D_EXACT_NAMLEN (dp) >= maxlen) {
-			/* include space for NUL */
-			oldaddr = sp->fts_path;
-			if (! fts_palloc(sp, _D_EXACT_NAMLEN (dp) + len + 1)) {
-				/*
-				 * No more memory.  Save
-				 * errno, free up the current structure and the
-				 * structures already allocated.
-				 */
-mem1:				saved_errno = errno;
-				if (p)
-					free(p);
-				fts_lfree(head);
-				closedir(dirp);
-				cur->fts_info = FTS_ERR;
-				SET(FTS_STOP);
-				__set_errno (saved_errno);
-				return (NULL);
-			}
-			/* Did realloc() change the pointer? */
-			if (oldaddr != sp->fts_path) {
-				doadjust = true;
-				if (ISSET(FTS_NOCHDIR))
-					cp = sp->fts_path + len;
-			}
-			maxlen = sp->fts_pathlen - len;
-		}
-
-		new_len = len + _D_EXACT_NAMLEN (dp);
-		if (new_len < len) {
-			/*
-			 * In the unlikely even that we would end up
-			 * with a file name longer than SIZE_MAX, free up
-			 * the current structure and the structures already
-			 * allocated, then error out with ENAMETOOLONG.
-			 */
-			free(p);
-			fts_lfree(head);
-			closedir(dirp);
-			cur->fts_info = FTS_ERR;
-			SET(FTS_STOP);
-			__set_errno (ENAMETOOLONG);
-			return (NULL);
-		}
-		p->fts_level = level;
-		p->fts_parent = sp->fts_cur;
-		p->fts_pathlen = new_len;
-
-#if defined FTS_WHITEOUT && 0
-		if (dp->d_type == DT_WHT)
-			p->fts_flags |= FTS_ISW;
-#endif
-
-		/* Build a file name for fts_stat to stat. */
-		if (ISSET(FTS_NOCHDIR)) {
-			p->fts_accpath = p->fts_path;
-			memmove(cp, p->fts_name, p->fts_namelen + 1);
-		} else
-			p->fts_accpath = p->fts_name;
-		/* Stat it. */
-		p->fts_info = fts_stat(sp, p, false);
-
-		/* Decrement link count if applicable. */
-		if (nlinks > 0 && (p->fts_info == FTS_D ||
-		    p->fts_info == FTS_DC || p->fts_info == FTS_DOT))
-			nlinks -= nostat;
-
-		/* We walk in directory order so "ls -f" doesn't get upset. */
-		p->fts_link = NULL;
-		if (head == NULL)
-			head = tail = p;
-		else {
-			tail->fts_link = p;
-			tail = p;
-		}
-		++nitems;
-	}
-	if (dirp)
-		closedir(dirp);
-
-	/*
-	 * If realloc() changed the address of the file name, adjust the
-	 * addresses for the rest of the tree and the dir list.
-	 */
-	if (doadjust)
-		fts_padjust(sp, head);
-
-	/*
-	 * If not changing directories, reset the file name back to original
-	 * state.
-	 */
-	if (ISSET(FTS_NOCHDIR)) {
-		if (len == sp->fts_pathlen || nitems == 0)
-			--cp;
-		*cp = '\0';
-	}
-
-	/*
-	 * If descended after called from fts_children or after called from
-	 * fts_read and nothing found, get back.  At the root level we use
-	 * the saved fd; if one of fts_open()'s arguments is a relative name
-	 * to an empty directory, we wind up here with no other way back.  If
-	 * can't get back, we're done.
-	 */
-	if (descend && (type == BCHILD || !nitems) &&
-	    (cur->fts_level == FTS_ROOTLEVEL
-	     ? RESTORE_INITIAL_CWD(sp)
-	     : fts_safe_changedir(sp, cur->fts_parent, -1, ".."))) {
-		cur->fts_info = FTS_ERR;
-		SET(FTS_STOP);
-		fts_lfree(head);
-		return (NULL);
-	}
-
-	/* If didn't find anything, return NULL. */
-	if (!nitems) {
-		if (type == BREAD)
-			cur->fts_info = FTS_DP;
-		fts_lfree(head);
-		return (NULL);
-	}
-
-	/* Sort the entries. */
-	if (sp->fts_compar && nitems > 1)
-		head = fts_sort(sp, head, nitems);
-	return (head);
-}
-
-#if FTS_DEBUG
-
-/* Walk ->fts_parent links starting at E_CURR, until the root of the
-   current hierarchy.  There should be a directory with dev/inode
-   matching those of AD.  If not, print a lot of diagnostics.  */
-static void
-find_matching_ancestor (FTSENT const *e_curr, struct Active_dir const *ad)
-{
-  FTSENT const *ent;
-  for (ent = e_curr; ent->fts_level >= FTS_ROOTLEVEL; ent = ent->fts_parent)
-    {
-      if (ad->ino == ent->fts_statp->st_ino
-	  && ad->dev == ent->fts_statp->st_dev)
-	return;
-    }
-  printf ("ERROR: tree dir, %s, not active\n", ad->fts_ent->fts_accpath);
-  printf ("active dirs:\n");
-  for (ent = e_curr;
-       ent->fts_level >= FTS_ROOTLEVEL; ent = ent->fts_parent)
-    printf ("  %s(%"PRIuMAX"/%"PRIuMAX") to %s(%"PRIuMAX"/%"PRIuMAX")...\n",
-	    ad->fts_ent->fts_accpath,
-	    (uintmax_t) ad->dev,
-	    (uintmax_t) ad->ino,
-	    ent->fts_accpath,
-	    (uintmax_t) ent->fts_statp->st_dev,
-	    (uintmax_t) ent->fts_statp->st_ino);
-}
-
-void
-fts_cross_check (FTS const *sp)
-{
-  FTSENT const *ent = sp->fts_cur;
-  FTSENT const *t;
-  if ( ! ISSET (FTS_TIGHT_CYCLE_CHECK))
-    return;
-
-  Dprintf (("fts-cross-check cur=%s\n", ent->fts_path));
-  /* Make sure every parent dir is in the tree.  */
-  for (t = ent->fts_parent; t->fts_level >= FTS_ROOTLEVEL; t = t->fts_parent)
-    {
-      struct Active_dir ad;
-      ad.ino = t->fts_statp->st_ino;
-      ad.dev = t->fts_statp->st_dev;
-      if ( ! hash_lookup (sp->fts_cycle.ht, &ad))
-	printf ("ERROR: active dir, %s, not in tree\n", t->fts_path);
-    }
-
-  /* Make sure every dir in the tree is an active dir.
-     But ENT is not necessarily a directory.  If so, just skip this part. */
-  if (ent->fts_parent->fts_level >= FTS_ROOTLEVEL
-      && (ent->fts_info == FTS_DP
-	  || ent->fts_info == FTS_D))
-    {
-      struct Active_dir *ad;
-      for (ad = hash_get_first (sp->fts_cycle.ht); ad != NULL;
-	   ad = hash_get_next (sp->fts_cycle.ht, ad))
-	{
-	  find_matching_ancestor (ent, ad);
-	}
-    }
-}
-#endif
-
-static unsigned short int
-internal_function
-fts_stat(FTS *sp, register FTSENT *p, bool follow)
-{
-	struct stat *sbp = p->fts_statp;
-	int saved_errno;
-
-#if defined FTS_WHITEOUT && 0
-	/* check for whiteout */
-	if (p->fts_flags & FTS_ISW) {
-		memset(sbp, '\0', sizeof (*sbp));
-		sbp->st_mode = S_IFWHT;
-		return (FTS_W);
-       }
-#endif
-
-	/*
-	 * If doing a logical walk, or application requested FTS_FOLLOW, do
-	 * a stat(2).  If that fails, check for a non-existent symlink.  If
-	 * fail, set the errno from the stat call.
-	 */
-	if (ISSET(FTS_LOGICAL) || follow) {
-		if (stat(p->fts_accpath, sbp)) {
-			saved_errno = errno;
-			if (errno == ENOENT
-			    && lstat(p->fts_accpath, sbp) == 0) {
-				__set_errno (0);
-				return (FTS_SLNONE);
-			}
-			p->fts_errno = saved_errno;
-			goto err;
-		}
-	} else if (fstatat(sp->fts_cwd_fd, p->fts_accpath, sbp,
-			   AT_SYMLINK_NOFOLLOW)) {
-		p->fts_errno = errno;
-err:		memset(sbp, 0, sizeof(struct stat));
-		return (FTS_NS);
-	}
-
-	if (S_ISDIR(sbp->st_mode)) {
-		if (ISDOT(p->fts_name))
-			return (FTS_DOT);
-
-#if _LGPL_PACKAGE
-		{
-		  /*
-		   * Cycle detection is done by brute force when the directory
-		   * is first encountered.  If the tree gets deep enough or the
-		   * number of symbolic links to directories is high enough,
-		   * something faster might be worthwhile.
-		   */
-		  FTSENT *t;
-
-		  for (t = p->fts_parent;
-		       t->fts_level >= FTS_ROOTLEVEL; t = t->fts_parent)
-		    if (sbp->st_ino == t->fts_statp->st_ino
-			&& sbp->st_dev == t->fts_statp->st_dev)
-		      {
-			p->fts_cycle = t;
-			return (FTS_DC);
-		      }
-		}
-#endif
-
-		return (FTS_D);
-	}
-	if (S_ISLNK(sbp->st_mode))
-		return (FTS_SL);
-	if (S_ISREG(sbp->st_mode))
-		return (FTS_F);
-	return (FTS_DEFAULT);
-}
-
-static int
-fts_compar (void const *a, void const *b)
-{
-  /* Convert A and B to the correct types, to pacify the compiler, and
-     for portability to bizarre hosts where "void const *" and "FTSENT
-     const **" differ in runtime representation.  The comparison
-     function cannot modify *a and *b, but there is no compile-time
-     check for this.  */
-  FTSENT const **pa = (FTSENT const **) a;
-  FTSENT const **pb = (FTSENT const **) b;
-  return pa[0]->fts_fts->fts_compar (pa, pb);
-}
-
-static FTSENT *
-internal_function
-fts_sort (FTS *sp, FTSENT *head, register size_t nitems)
-{
-	register FTSENT **ap, *p;
-
-	/* On most modern hosts, void * and FTSENT ** have the same
-	   run-time representation, and one can convert sp->fts_compar to
-	   the type qsort expects without problem.  Use the heuristic that
-	   this is OK if the two pointer types are the same size, and if
-	   converting FTSENT ** to long int is the same as converting
-	   FTSENT ** to void * and then to long int.  This heuristic isn't
-	   valid in general but we don't know of any counterexamples.  */
-	FTSENT *dummy;
-	int (*compare) (void const *, void const *) =
-	  ((sizeof &dummy == sizeof (void *)
-	    && (long int) &dummy == (long int) (void *) &dummy)
-	   ? (int (*) (void const *, void const *)) sp->fts_compar
-	   : fts_compar);
-
-	/*
-	 * Construct an array of pointers to the structures and call qsort(3).
-	 * Reassemble the array in the order returned by qsort.  If unable to
-	 * sort for memory reasons, return the directory entries in their
-	 * current order.  Allocate enough space for the current needs plus
-	 * 40 so don't realloc one entry at a time.
-	 */
-	if (nitems > sp->fts_nitems) {
-		struct _ftsent **a;
-
-		sp->fts_nitems = nitems + 40;
-		if (SIZE_MAX / sizeof *a < sp->fts_nitems
-		    || ! (a = realloc (sp->fts_array,
-				       sp->fts_nitems * sizeof *a))) {
-			free(sp->fts_array);
-			sp->fts_array = NULL;
-			sp->fts_nitems = 0;
-			return (head);
-		}
-		sp->fts_array = a;
-	}
-	for (ap = sp->fts_array, p = head; p; p = p->fts_link)
-		*ap++ = p;
-	qsort((void *)sp->fts_array, nitems, sizeof(FTSENT *), compare);
-	for (head = *(ap = sp->fts_array); --nitems; ++ap)
-		ap[0]->fts_link = ap[1];
-	ap[0]->fts_link = NULL;
-	return (head);
-}
-
-static FTSENT *
-internal_function
-fts_alloc (FTS *sp, const char *name, register size_t namelen)
-{
-	register FTSENT *p;
-	size_t len;
-
-	/*
-	 * The file name is a variable length array.  Allocate the FTSENT
-	 * structure and the file name in one chunk.
-	 */
-	len = sizeof(FTSENT) + namelen;
-	if ((p = malloc(len)) == NULL)
-		return (NULL);
-
-	/* Copy the name and guarantee NUL termination. */
-	memmove(p->fts_name, name, namelen);
-	p->fts_name[namelen] = '\0';
-
-	p->fts_namelen = namelen;
-	p->fts_fts = sp;
-	p->fts_path = sp->fts_path;
-	p->fts_errno = 0;
-	p->fts_flags = 0;
-	p->fts_instr = FTS_NOINSTR;
-	p->fts_number = 0;
-	p->fts_pointer = NULL;
-	return (p);
-}
-
-static void
-internal_function
-fts_lfree (register FTSENT *head)
-{
-	register FTSENT *p;
-
-	/* Free a linked list of structures. */
-	while ((p = head)) {
-		head = head->fts_link;
-		free(p);
-	}
-}
-
-/*
- * Allow essentially unlimited file name lengths; find, rm, ls should
- * all work on any tree.  Most systems will allow creation of file
- * names much longer than MAXPATHLEN, even though the kernel won't
- * resolve them.  Add the size (not just what's needed) plus 256 bytes
- * so don't realloc the file name 2 bytes at a time.
- */
-static bool
-internal_function
-fts_palloc (FTS *sp, size_t more)
-{
-	char *p;
-	size_t new_len = sp->fts_pathlen + more + 256;
-
-	/*
-	 * See if fts_pathlen would overflow.
-	 */
-	if (new_len < sp->fts_pathlen) {
-		if (sp->fts_path) {
-			free(sp->fts_path);
-			sp->fts_path = NULL;
-		}
-		sp->fts_path = NULL;
-		__set_errno (ENAMETOOLONG);
-		return false;
-	}
-	sp->fts_pathlen = new_len;
-	p = realloc(sp->fts_path, sp->fts_pathlen);
-	if (p == NULL) {
-		free(sp->fts_path);
-		sp->fts_path = NULL;
-		return false;
-	}
-	sp->fts_path = p;
-	return true;
-}
-
-/*
- * When the file name is realloc'd, have to fix all of the pointers in
- *  structures already returned.
- */
-static void
-internal_function
-fts_padjust (FTS *sp, FTSENT *head)
-{
-	FTSENT *p;
-	char *addr = sp->fts_path;
-
-#define ADJUST(p) do {							\
-	if ((p)->fts_accpath != (p)->fts_name) {			\
-		(p)->fts_accpath =					\
-		    (char *)addr + ((p)->fts_accpath - (p)->fts_path);	\
-	}								\
-	(p)->fts_path = addr;						\
-} while (0)
-	/* Adjust the current set of children. */
-	for (p = sp->fts_child; p; p = p->fts_link)
-		ADJUST(p);
-
-	/* Adjust the rest of the tree, including the current level. */
-	for (p = head; p->fts_level >= FTS_ROOTLEVEL;) {
-		ADJUST(p);
-		p = p->fts_link ? p->fts_link : p->fts_parent;
-	}
-}
-
-static size_t
-internal_function
-fts_maxarglen (char * const *argv)
-{
-	size_t len, max;
-
-	for (max = 0; *argv; ++argv)
-		if ((len = strlen(*argv)) > max)
-			max = len;
-	return (max + 1);
-}
-
-/*
- * Change to dir specified by fd or file name without getting
- * tricked by someone changing the world out from underneath us.
- * Assumes p->fts_statp->st_dev and p->fts_statp->st_ino are filled in.
- * If FD is non-negative, expect it to be used after this function returns,
- * and to be closed eventually.  So don't pass e.g., `dirfd(dirp)' and then
- * do closedir(dirp), because that would invalidate the saved FD.
- * Upon failure, close FD immediately and return nonzero.
- */
-static int
-internal_function
-fts_safe_changedir (FTS *sp, FTSENT *p, int fd, char const *dir)
-{
-	int ret;
-
-	int newfd = fd;
-	if (ISSET(FTS_NOCHDIR)) {
-		if (ISSET(FTS_CWDFD) && 0 <= fd)
-			close (fd);
-		return (0);
-	}
-	if (fd < 0 && (newfd = diropen (sp, dir)) < 0)
-		return (-1);
-
-	/* The following dev/inode check is necessary if we're doing
-	   a `logical' traversal (through symlinks, a la chown -L),
-	   if the system lacks O_NOFOLLOW support, or if we're changing
-	   to "..".  In the latter case, O_NOFOLLOW can't help.  In
-	   general (when the target is not ".."), diropen's use of
-	   O_NOFOLLOW ensures we don't mistakenly follow a symlink,
-	   so we can avoid the expense of this fstat.  */
-	if (ISSET(FTS_LOGICAL) || O_NOFOLLOW == 0
-	    || (dir && STREQ (dir, "..")))
-	  {
-	    struct stat sb;
-	    if (fstat(newfd, &sb))
-	      {
-		ret = -1;
-		goto bail;
-	      }
-	    if (p->fts_statp->st_dev != sb.st_dev
-		|| p->fts_statp->st_ino != sb.st_ino)
-	      {
-		__set_errno (ENOENT);		/* disinformation */
-		ret = -1;
-		goto bail;
-	      }
-	  }
-
-	if (ISSET(FTS_CWDFD))
-	  {
-	    cwd_advance_fd (sp, newfd);
-	    return 0;
-	  }
-
-	ret = fchdir(newfd);
-bail:
-	if (fd < 0)
-	  {
-	    int oerrno = errno;
-	    (void)close(newfd);
-	    __set_errno (oerrno);
-	  }
-	return (ret);
-}