/* File tree walker functions.

   Copyright (C) 1996-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1996.

   The GNU C Library is free software; you can redistribute it and/or

   modify it under the terms of the GNU Lesser General Public

   License as published by the Free Software Foundation; either

   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library 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

   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public

   License along with the GNU C Library; if not, see

   <http://www.gnu.org/licenses/>.  */

#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#if __GNUC__

# define alloca __builtin_alloca

#else

# if HAVE_ALLOCA_H

#  include <alloca.h>

# else

#  ifdef _AIX

 #  pragma alloca

#  else

char *alloca ();

#  endif

# endif

#endif

#ifdef _LIBC

# include <dirent.h>

# define NAMLEN(dirent) _D_EXACT_NAMLEN (dirent)

#else

# if HAVE_DIRENT_H

#  include <dirent.h>

#  define NAMLEN(dirent) strlen ((dirent)->d_name)

# else

#  define dirent direct

#  define NAMLEN(dirent) (dirent)->d_namlen

#  if HAVE_SYS_NDIR_H

#   include <sys/ndir.h>

#  endif

#  if HAVE_SYS_DIR_H

#   include <sys/dir.h>

#  endif

#  if HAVE_NDIR_H

#   include <ndir.h>

#  endif

# endif

#endif

#include <errno.h>

#include <fcntl.h>

#include <ftw.h>

#include <limits.h>

#include <search.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>

#include <not-cancel.h>

#include <sys/param.h>

#ifdef _LIBC

# include <include/sys/stat.h>

#else

# include <sys/stat.h>

#endif

#if ! _LIBC && !HAVE_DECL_STPCPY && !defined stpcpy

char *stpcpy ();

#endif

#if ! _LIBC && ! defined HAVE_MEMPCPY && ! defined mempcpy

/* Be CAREFUL that there are no side effects in N.  */

# define mempcpy(D, S, N) ((void *) ((char *) memcpy (D, S, N) + (N)))

#endif

/* #define NDEBUG 1 */

#include <assert.h>

#ifndef _LIBC

# undef __chdir

# define __chdir chdir

# undef __closedir

# define __closedir closedir

# undef __fchdir

# define __fchdir fchdir

# undef __getcwd

# define __getcwd(P, N) xgetcwd ()

extern char *xgetcwd (void);

# undef __mempcpy

# define __mempcpy mempcpy

# undef __opendir

# define __opendir opendir

# undef __readdir64

# define __readdir64 readdir

# undef __stpcpy

# define __stpcpy stpcpy

# undef __tdestroy

# define __tdestroy tdestroy

# undef __tfind

# define __tfind tfind

# undef __tsearch

# define __tsearch tsearch

# undef dirent64

# define dirent64 dirent

# undef MAX

# define MAX(a, b) ((a) > (b) ? (a) : (b))

#endif

/* Arrange to make lstat calls go through the wrapper function

   on systems with an lstat function that does not dereference symlinks

   that are specified with a trailing slash.  */

#if ! _LIBC && ! LSTAT_FOLLOWS_SLASHED_SYMLINK

int rpl_lstat (const char *, struct stat *);

# undef lstat

# define lstat(Name, Stat_buf) rpl_lstat(Name, Stat_buf)

#endif

#ifndef __set_errno

# define __set_errno(Val) errno = (Val)

#endif

/* Support for the LFS API version.  */

#ifndef FTW_NAME

# define FTW_NAME ftw

# define NFTW_NAME nftw

# define NFTW_OLD_NAME __old_nftw

# define NFTW_NEW_NAME __new_nftw

# define INO_T ino_t

# define STAT stat

# ifdef _LIBC

#  define LXSTAT __lxstat

#  define XSTAT __xstat

#  define FXSTATAT __fxstatat

# else

#  define LXSTAT(V,f,sb) lstat (f,sb)

#  define XSTAT(V,f,sb) stat (f,sb)

#  define FXSTATAT(V,d,f,sb,m) fstatat (d, f, sb, m)

# endif

# define FTW_FUNC_T __ftw_func_t

# define NFTW_FUNC_T __nftw_func_t

#endif

/* We define PATH_MAX if the system does not provide a definition.

   This does not artificially limit any operation.  PATH_MAX is simply

   used as a guesstimate for the expected maximal path length.

   Buffers will be enlarged if necessary.  */

#ifndef PATH_MAX

# define PATH_MAX 1024

#endif

struct dir_data

{

  DIR *stream;

  int streamfd;

  char *content;

};

struct known_object

{

  dev_t dev;

  INO_T ino;

};

struct ftw_data

{

  /* Array with pointers to open directory streams.  */

  struct dir_data **dirstreams;

  size_t actdir;

  size_t maxdir;

  /* Buffer containing name of currently processed object.  */

  char *dirbuf;

  size_t dirbufsize;

  /* Passed as fourth argument to `nftw' callback.  The `base' member

     tracks the content of the `dirbuf'.  */

  struct FTW ftw;

  /* Flags passed to `nftw' function.  0 for `ftw'.  */

  int flags;

  /* Conversion array for flag values.  It is the identity mapping for

     `nftw' calls, otherwise it maps the values to those known by

     `ftw'.  */

  const int *cvt_arr;

  /* Callback function.  We always use the `nftw' form.  */

  NFTW_FUNC_T func;

  /* Device of starting point.  Needed for FTW_MOUNT.  */

  dev_t dev;

  /* Data structure for keeping fingerprints of already processed

     object.  This is needed when not using FTW_PHYS.  */

  void *known_objects;

};

/* Internally we use the FTW_* constants used for `nftw'.  When invoked

   as `ftw', map each flag to the subset of values used by `ftw'.  */

static const int nftw_arr[] =

{

  FTW_F, FTW_D, FTW_DNR, FTW_NS, FTW_SL, FTW_DP, FTW_SLN

};

static const int ftw_arr[] =

{

  FTW_F, FTW_D, FTW_DNR, FTW_NS, FTW_F, FTW_D, FTW_NS

};

/* Forward declarations of local functions.  */

static int ftw_dir (struct ftw_data *data, struct STAT *st,

		    struct dir_data *old_dir);

static int

object_compare (const void *p1, const void *p2)

{

  /* We don't need a sophisticated and useful comparison.  We are only

     interested in equality.  However, we must be careful not to

     accidentally compare `holes' in the structure.  */

  const struct known_object *kp1 = p1, *kp2 = p2;

  int cmp1;

  cmp1 = (kp1->ino > kp2->ino) - (kp1->ino < kp2->ino);

  if (cmp1 != 0)

    return cmp1;

  return (kp1->dev > kp2->dev) - (kp1->dev < kp2->dev);

}

static int

add_object (struct ftw_data *data, struct STAT *st)

{

  struct known_object *newp = malloc (sizeof (struct known_object));

  if (newp == NULL)

    return -1;

  newp->dev = st->st_dev;

  newp->ino = st->st_ino;

  return __tsearch (newp, &data->known_objects, object_compare) ? 0 : -1;

}

static inline int

find_object (struct ftw_data *data, struct STAT *st)

{

  struct known_object obj;

  obj.dev = st->st_dev;

  obj.ino = st->st_ino;

  return __tfind (&obj, &data->known_objects, object_compare) != NULL;

}

static inline int

__attribute ((always_inline))

open_dir_stream (int *dfdp, struct ftw_data *data, struct dir_data *dirp)

{

  int result = 0;

  if (data->dirstreams[data->actdir] != NULL)

    {

      /* Oh, oh.  We must close this stream.  Get all remaining

	 entries and store them as a list in the `content' member of

	 the `struct dir_data' variable.  */

      size_t bufsize = 1024;

      char *buf = malloc (bufsize);

      if (buf == NULL)

	result = -1;

      else

	{

	  DIR *st = data->dirstreams[data->actdir]->stream;

	  struct dirent64 *d;

	  size_t actsize = 0;

	  while ((d = __readdir64 (st)) != NULL)

	    {

	      size_t this_len = NAMLEN (d);

	      if (actsize + this_len + 2 >= bufsize)

		{

		  char *newp;

		  bufsize += MAX (1024, 2 * this_len);

		  newp = (char *) realloc (buf, bufsize);

		  if (newp == NULL)

		    {

		      /* No more memory.  */

		      int save_err = errno;

		      free (buf);

		      __set_errno (save_err);

		      return -1;

		    }

		  buf = newp;

		}

	      *((char *) __mempcpy (buf + actsize, d->d_name, this_len))

		= '\0';

	      actsize += this_len + 1;

	    }

	  /* Terminate the list with an additional NUL byte.  */

	  buf[actsize++] = '\0';

	  /* Shrink the buffer to what we actually need.  */

	  data->dirstreams[data->actdir]->content = realloc (buf, actsize);

	  if (data->dirstreams[data->actdir]->content == NULL)

	    {

	      int save_err = errno;

	      free (buf);

	      __set_errno (save_err);

	      result = -1;

	    }

	  else

	    {

	      __closedir (st);

	      data->dirstreams[data->actdir]->stream = NULL;

	      data->dirstreams[data->actdir]->streamfd = -1;

	      data->dirstreams[data->actdir] = NULL;

	    }

	}

    }

  /* Open the new stream.  */

  if (result == 0)

    {

      assert (data->dirstreams[data->actdir] == NULL);

      if (dfdp != NULL && *dfdp != -1)

	{

	  int fd = __openat64_nocancel (*dfdp, data->dirbuf + data->ftw.base,

					O_RDONLY | O_DIRECTORY | O_NDELAY);

	  dirp->stream = NULL;

	  if (fd != -1 && (dirp->stream = __fdopendir (fd)) == NULL)

	    __close_nocancel_nostatus (fd);

	}

      else

	{

	  const char *name;

	  if (data->flags & FTW_CHDIR)

	    {

	      name = data->dirbuf + data->ftw.base;

	      if (name[0] == '\0')

		name = ".";

	    }

	  else

	    name = data->dirbuf;

	  dirp->stream = __opendir (name);

	}

      if (dirp->stream == NULL)

	result = -1;

      else

	{

	  dirp->streamfd = __dirfd (dirp->stream);

	  dirp->content = NULL;

	  data->dirstreams[data->actdir] = dirp;

	  if (++data->actdir == data->maxdir)

	    data->actdir = 0;

	}

    }

  return result;

}

static int

process_entry (struct ftw_data *data, struct dir_data *dir, const char *name,

	       size_t namlen, int d_type)

{

  struct STAT st;

  int result = 0;

  int flag = 0;

  size_t new_buflen;

  if (name[0] == '.' && (name[1] == '\0'

			 || (name[1] == '.' && name[2] == '\0')))

    /* Don't process the "." and ".." entries.  */

    return 0;

  new_buflen = data->ftw.base + namlen + 2;

  if (data->dirbufsize < new_buflen)

    {

      /* Enlarge the buffer.  */

      char *newp;

      data->dirbufsize = 2 * new_buflen;

      newp = (char *) realloc (data->dirbuf, data->dirbufsize);

      if (newp == NULL)

	return -1;

      data->dirbuf = newp;

    }

  *((char *) __mempcpy (data->dirbuf + data->ftw.base, name, namlen)) = '\0';

  int statres;

  if (dir->streamfd != -1)

    statres = FXSTATAT (_STAT_VER, dir->streamfd, name, &st,

			(data->flags & FTW_PHYS) ? AT_SYMLINK_NOFOLLOW : 0);

  else

    {

      if ((data->flags & FTW_CHDIR) == 0)

	name = data->dirbuf;

      statres = ((data->flags & FTW_PHYS)

		 ? LXSTAT (_STAT_VER, name, &st)

		 : XSTAT (_STAT_VER, name, &st);;

    }

  if (statres < 0)

    {

      if (errno != EACCES && errno != ENOENT)

	result = -1;

      else if (data->flags & FTW_PHYS)

	flag = FTW_NS;

      else if (d_type == DT_LNK)

	flag = FTW_SLN;

      else

	{

	  if (dir->streamfd != -1)

	    statres = FXSTATAT (_STAT_VER, dir->streamfd, name, &st,

				AT_SYMLINK_NOFOLLOW);

	  else

	    statres = LXSTAT (_STAT_VER, name, &st);

	  if (statres == 0 && S_ISLNK (st.st_mode))

	    flag = FTW_SLN;

	  else

	    flag = FTW_NS;

	}

    }

  else

    {

      if (S_ISDIR (st.st_mode))

	flag = FTW_D;

      else if (S_ISLNK (st.st_mode))

	flag = FTW_SL;

      else

	flag = FTW_F;

    }

  if (result == 0

      && (flag == FTW_NS

	  || !(data->flags & FTW_MOUNT) || st.st_dev == data->dev))

    {

      if (flag == FTW_D)

	{

	  if ((data->flags & FTW_PHYS)

	      || (!find_object (data, &st)

		  /* Remember the object.  */

		  && (result = add_object (data, &st)) == 0))

	    result = ftw_dir (data, &st, dir);

	}

      else

	result = (*data->func) (data->dirbuf, &st, data->cvt_arr[flag],

				&data->ftw);

    }

  if ((data->flags & FTW_ACTIONRETVAL) && result == FTW_SKIP_SUBTREE)

    result = 0;

  return result;

}

static int

__attribute ((noinline))

ftw_dir (struct ftw_data *data, struct STAT *st, struct dir_data *old_dir)

{

  struct dir_data dir;

  struct dirent64 *d;

  int previous_base = data->ftw.base;

  int result;

  char *startp;

  /* Open the stream for this directory.  This might require that

     another stream has to be closed.  */

  result = open_dir_stream (old_dir == NULL ? NULL : &old_dir->streamfd,

			    data, &dir;;

  if (result != 0)

    {

      if (errno == EACCES)

	/* We cannot read the directory.  Signal this with a special flag.  */

	result = (*data->func) (data->dirbuf, st, FTW_DNR, &data->ftw);

      return result;

    }

  /* First, report the directory (if not depth-first).  */

  if (!(data->flags & FTW_DEPTH))

    {

      result = (*data->func) (data->dirbuf, st, FTW_D, &data->ftw);

      if (result != 0)

	{

	  int save_err;

fail:

	  save_err = errno;

	  __closedir (dir.stream);

	  dir.streamfd = -1;

	  __set_errno (save_err);

	  if (data->actdir-- == 0)

	    data->actdir = data->maxdir - 1;

	  data->dirstreams[data->actdir] = NULL;

	  return result;

	}

    }

  /* If necessary, change to this directory.  */

  if (data->flags & FTW_CHDIR)

    {

      if (__fchdir (__dirfd (dir.stream)) < 0)

	{

	  result = -1;

	  goto fail;

	}

    }

  /* Next, update the `struct FTW' information.  */

  ++data->ftw.level;

  startp = __rawmemchr (data->dirbuf, '\0');

  /* There always must be a directory name.  */

  assert (startp != data->dirbuf);

  if (startp[-1] != '/')

    *startp++ = '/';

  data->ftw.base = startp - data->dirbuf;

  while (dir.stream != NULL && (d = __readdir64 (dir.stream)) != NULL)

    {

      int d_type = DT_UNKNOWN;

#ifdef _DIRENT_HAVE_D_TYPE

      d_type = d->d_type;

#endif

      result = process_entry (data, &dir, d->d_name, NAMLEN (d), d_type);

      if (result != 0)

	break;

    }

  if (dir.stream != NULL)

    {

      /* The stream is still open.  I.e., we did not need more

	 descriptors.  Simply close the stream now.  */

      int save_err = errno;

      assert (dir.content == NULL);

      __closedir (dir.stream);

      dir.streamfd = -1;

      __set_errno (save_err);

      if (data->actdir-- == 0)

	data->actdir = data->maxdir - 1;

      data->dirstreams[data->actdir] = NULL;

    }

  else

    {

      int save_err;

      char *runp = dir.content;

      while (result == 0 && *runp != '\0')

	{

	  char *endp = strchr (runp, '\0');

	  // XXX Should store the d_type values as well?!

	  result = process_entry (data, &dir, runp, endp - runp, DT_UNKNOWN);

	  runp = endp + 1;

	}

      save_err = errno;

      free (dir.content);

      __set_errno (save_err);

    }

  if ((data->flags & FTW_ACTIONRETVAL) && result == FTW_SKIP_SIBLINGS)

    result = 0;

  /* Prepare the return, revert the `struct FTW' information.  */

  data->dirbuf[data->ftw.base - 1] = '\0';

  --data->ftw.level;

  data->ftw.base = previous_base;

  /* Finally, if we process depth-first report the directory.  */

  if (result == 0 && (data->flags & FTW_DEPTH))

    result = (*data->func) (data->dirbuf, st, FTW_DP, &data->ftw);

  if (old_dir

      && (data->flags & FTW_CHDIR)

      && (result == 0

	  || ((data->flags & FTW_ACTIONRETVAL)

	      && (result != -1 && result != FTW_STOP))))

    {

      /* Change back to the parent directory.  */

      int done = 0;

      if (old_dir->stream != NULL)

	if (__fchdir (__dirfd (old_dir->stream)) == 0)

	  done = 1;

      if (!done)

	{

	  if (data->ftw.base == 1)

	    {

	      if (__chdir ("/") < 0)

		result = -1;

	    }

	  else

	    if (__chdir ("..") < 0)

	      result = -1;

	}

    }

  return result;

}

static int

__attribute ((noinline))

ftw_startup (const char *dir, int is_nftw, void *func, int descriptors,

	     int flags)

{

  struct ftw_data data;

  struct STAT st;

  int result = 0;

  int save_err;

  int cwdfd = -1;

  char *cwd = NULL;

  char *cp;

  /* First make sure the parameters are reasonable.  */

  if (dir[0] == '\0')

    {

      __set_errno (ENOENT);

      return -1;

    }

  data.maxdir = descriptors < 1 ? 1 : descriptors;

  data.actdir = 0;

  data.dirstreams = (struct dir_data **) alloca (data.maxdir

						 * sizeof (struct dir_data *));

  memset (data.dirstreams, '\0', data.maxdir * sizeof (struct dir_data *));

  /* PATH_MAX is always defined when we get here.  */

  data.dirbufsize = MAX (2 * strlen (dir), PATH_MAX);

  data.dirbuf = (char *) malloc (data.dirbufsize);

  if (data.dirbuf == NULL)

    return -1;

  cp = __stpcpy (data.dirbuf, dir);

  /* Strip trailing slashes.  */

  while (cp > data.dirbuf + 1 && cp[-1] == '/')

    --cp;

  *cp = '\0';

  data.ftw.level = 0;

  /* Find basename.  */

  while (cp > data.dirbuf && cp[-1] != '/')

    --cp;

  data.ftw.base = cp - data.dirbuf;

  data.flags = flags;

  /* This assignment might seem to be strange but it is what we want.

     The trick is that the first three arguments to the `ftw' and

     `nftw' callback functions are equal.  Therefore we can call in

     every case the callback using the format of the `nftw' version

     and get the correct result since the stack layout for a function

     call in C allows this.  */

  data.func = (NFTW_FUNC_T) func;

  /* Since we internally use the complete set of FTW_* values we need

     to reduce the value range before calling a `ftw' callback.  */

  data.cvt_arr = is_nftw ? nftw_arr : ftw_arr;

  /* No object known so far.  */

  data.known_objects = NULL;

  /* Now go to the directory containing the initial file/directory.  */

  if (flags & FTW_CHDIR)

    {

      /* We have to be able to go back to the current working

	 directory.  The best way to do this is to use a file

	 descriptor.  */

      cwdfd = __open (".", O_RDONLY | O_DIRECTORY);

      if (cwdfd == -1)

	{

	  /* Try getting the directory name.  This can be needed if

	     the current directory is executable but not readable.  */

	  if (errno == EACCES)

	    /* GNU extension ahead.  */

	    cwd =  __getcwd (NULL, 0);

	  if (cwd == NULL)

	    goto out_fail;

	}

      else if (data.maxdir > 1)

	/* Account for the file descriptor we use here.  */

	--data.maxdir;

      if (data.ftw.base > 0)

	{

	  /* Change to the directory the file is in.  In data.dirbuf

	     we have a writable copy of the file name.  Just NUL

	     terminate it for now and change the directory.  */

	  if (data.ftw.base == 1)

	    /* I.e., the file is in the root directory.  */

	    result = __chdir ("/");

	  else

	    {

	      char ch = data.dirbuf[data.ftw.base - 1];

	      data.dirbuf[data.ftw.base - 1] = '\0';

	      result = __chdir (data.dirbuf);

	      data.dirbuf[data.ftw.base - 1] = ch;

	    }

	}

    }

  /* Get stat info for start directory.  */

  if (result == 0)

    {

      const char *name;

      if (data.flags & FTW_CHDIR)

	{

	  name = data.dirbuf + data.ftw.base;

	  if (name[0] == '\0')

	    name = ".";

	}

      else

	name = data.dirbuf;

      if (((flags & FTW_PHYS)

	   ? LXSTAT (_STAT_VER, name, &st)

	   : XSTAT (_STAT_VER, name, &st)) < 0)

	{

	  if (!(flags & FTW_PHYS)

	      && errno == ENOENT

	      && LXSTAT (_STAT_VER, name, &st) == 0

	      && S_ISLNK (st.st_mode))

	    result = (*data.func) (data.dirbuf, &st, data.cvt_arr[FTW_SLN],

				   &data.ftw);

	  else

	    /* No need to call the callback since we cannot say anything

	       about the object.  */

	    result = -1;

	}

      else

	{

	  if (S_ISDIR (st.st_mode))

	    {

	      /* Remember the device of the initial directory in case

		 FTW_MOUNT is given.  */

	      data.dev = st.st_dev;

	      /* We know this directory now.  */

	      if (!(flags & FTW_PHYS))

		result = add_object (&data, &st);

	      if (result == 0)

		result = ftw_dir (&data, &st, NULL);

	    }

	  else

	    {

	      int flag = S_ISLNK (st.st_mode) ? FTW_SL : FTW_F;

	      result = (*data.func) (data.dirbuf, &st, data.cvt_arr[flag],

				     &data.ftw);

	    }

	}

      if ((flags & FTW_ACTIONRETVAL)

	  && (result == FTW_SKIP_SUBTREE || result == FTW_SKIP_SIBLINGS))

	result = 0;

    }

  /* Return to the start directory (if necessary).  */

  if (cwdfd != -1)

    {

      int save_err = errno;

      __fchdir (cwdfd);

      __close_nocancel_nostatus (cwdfd);

      __set_errno (save_err);

    }

  else if (cwd != NULL)

    {

      int save_err = errno;

      __chdir (cwd);

      free (cwd);

      __set_errno (save_err);

    }

  /* Free all memory.  */

 out_fail:

  save_err = errno;

  __tdestroy (data.known_objects, free);

  free (data.dirbuf);

  __set_errno (save_err);

  return result;

}

/* Entry points.  */

int

FTW_NAME (const char *path, FTW_FUNC_T func, int descriptors)

{

  return ftw_startup (path, 0, func, descriptors, 0);

}

#ifndef _LIBC

int

NFTW_NAME (const char *path, NFTW_FUNC_T func, int descriptors, int flags)

{

  return ftw_startup (path, 1, func, descriptors, flags);

}

#else

# include <shlib-compat.h>

int NFTW_NEW_NAME (const char *, NFTW_FUNC_T, int, int);

int

NFTW_NEW_NAME (const char *path, NFTW_FUNC_T func, int descriptors, int flags)

{

  if (flags

      & ~(FTW_PHYS | FTW_MOUNT | FTW_CHDIR | FTW_DEPTH | FTW_ACTIONRETVAL))

    {

      __set_errno (EINVAL);

      return -1;

    }

  return ftw_startup (path, 1, func, descriptors, flags);

}

versioned_symbol (libc, NFTW_NEW_NAME, NFTW_NAME, GLIBC_2_3_3);

# if SHLIB_COMPAT(libc, GLIBC_2_1, GLIBC_2_3_3)

/* Older nftw* version just ignored all unknown flags.  */

int NFTW_OLD_NAME (const char *, NFTW_FUNC_T, int, int);

int

attribute_compat_text_section

NFTW_OLD_NAME (const char *path, NFTW_FUNC_T func, int descriptors, int flags)

{

  flags &= (FTW_PHYS | FTW_MOUNT | FTW_CHDIR | FTW_DEPTH);

  return ftw_startup (path, 1, func, descriptors, flags);

}

compat_symbol (libc, NFTW_OLD_NAME, NFTW_NAME, GLIBC_2_1);

# endif

#endif