pmt: revert 7f8090b

include/libgnulib/cycle-check.h

@@ -1,61 +0,0 @@
-/* help detect directory cycles efficiently
-
-   Copyright (C) 2003-2004, 2006, 2009-2024 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 3 of the License, 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, see <https://www.gnu.org/licenses/>.  */
-
-/* Written by Jim Meyering */
-
-#ifndef CYCLE_CHECK_H
-#define CYCLE_CHECK_H 1
-
-#include <stdint.h>
-#include "dev-ino.h"
-#include "same-inode.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-
-struct cycle_check_state
-{
-  struct dev_ino dev_ino;
-  uintmax_t chdir_counter;
-  int magic;
-};
-
-void cycle_check_init (struct cycle_check_state *state);
-bool cycle_check (struct cycle_check_state *state, struct stat const *sb);
-
-#define CYCLE_CHECK_REFLECT_CHDIR_UP(State, SB_dir, SB_subdir) \
-  do                                                            \
-    {                                                           \
-      /* You must call cycle_check at least once before using this macro.  */ \
-      if ((State)->chdir_counter == 0)                          \
-        abort ();                                               \
-      if (SAME_INODE ((State)->dev_ino, SB_subdir))             \
-        {                                                       \
-          (State)->dev_ino.st_dev = (SB_dir).st_dev;            \
-          (State)->dev_ino.st_ino = (SB_dir).st_ino;            \
-        }                                                       \
-    }                                                           \
-  while (0)
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif