/* Copyright (C) 2000-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   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/>.  */

#define scandir __no_scandir_decl

#include <dirent.h>

#undef scandir

int

__scandir64 (const char *dir, struct dirent64 ***namelist,

	   int (*select) (const struct dirent64 *),

	   int (*cmp) (const struct dirent64 **, const struct dirent64 **))

{

  return __scandir64_tail (__opendir (dir), namelist, select, cmp);

}

#if _DIRENT_MATCHES_DIRENT64

weak_alias (__scandir64, scandir64)

weak_alias (__scandir64, scandir)

#else

# include <shlib-compat.h>

versioned_symbol (libc, __scandir64, scandir64, GLIBC_2_2);

# if SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_2)

#  include <string.h>

#  include <errno.h>

#  include "olddirent.h"

int

__old_scandir64 (const char *dir, struct __old_dirent64 ***namelist,

		 int (*select) (const struct __old_dirent64 *),

		 int (*cmp) (const struct __old_dirent64 **,

			     const struct __old_dirent64 **))

{

  DIR *dp = __opendir (dir);

  struct __old_dirent64 **v = NULL;

  size_t vsize = 0;

  struct scandir_cancel_struct c;

  struct __old_dirent64 *d;

  int save;

  if (dp == NULL)

    return -1;

  save = errno;

  __set_errno (0);

  c.dp = dp;

  c.v = NULL;

  c.cnt = 0;

  __libc_cleanup_push (__scandir_cancel_handler, &c);

  while ((d = __old_readdir64 (dp)) != NULL)

    {

      int use_it = select == NULL;

      if (! use_it)

	{

	  use_it = select (d);

	  /* The select function might have changed errno.  It was

	     zero before and it need to be again to make the latter

	     tests work.  */

	  __set_errno (0);

	}

      if (use_it)

	{

	  struct __old_dirent64 *vnew;

	  size_t dsize;

	  /* Ignore errors from select or readdir */

	  __set_errno (0);

	  if (__glibc_unlikely (c.cnt == vsize))

	    {

	      struct __old_dirent64 **new;

	      if (vsize == 0)

		vsize = 10;

	      else

		vsize *= 2;

	      new = (struct __old_dirent64 **) realloc (v,

							vsize * sizeof (*v));

	      if (new == NULL)

		break;

	      v = new;

	      c.v = (void *) v;

	    }

	  dsize = &d->d_name[_D_ALLOC_NAMLEN (d)] - (char *) d;

	  vnew = (struct __old_dirent64 *) malloc (dsize);

	  if (vnew == NULL)

	    break;

	  v[c.cnt++] = (struct __old_dirent64 *) memcpy (vnew, d, dsize);

	}

    }

  if (__builtin_expect (errno, 0) != 0)

    {

      save = errno;

      while (c.cnt > 0)

	free (v[--c.cnt]);

      free (v);

      c.cnt = -1;

    }

  else

    {

      /* Sort the list if we have a comparison function to sort with.  */

      if (cmp != NULL)

	qsort (v, c.cnt, sizeof (*v),

	       (int (*) (const void *, const void *)) cmp);

      *namelist = v;

    }

  __libc_cleanup_pop (0);

  (void) __closedir (dp);

  __set_errno (save);

  return c.cnt;

}

compat_symbol (libc, __old_scandir64, scandir64, GLIBC_2_1);

# endif /* SHLIB_COMPAT (libc, GLIBC_2_1, GLIBC_2_2)  */

#endif /* _DIRENT_MATCHES_DIRENT64  */