1 /* help detect directory cycles efficiently 2 3 Copyright (C) 2003, 2004 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 2, or (at your option) 8 any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program; see the file COPYING. 17 If not, write to the Free Software Foundation, 18 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ 19 20 /* Written by Jim Meyering */ 21 22 #ifndef CYCLE_CHECK_H 23 # define CYCLE_CHECK_H 1 24 25 # if HAVE_INTTYPES_H 26 # include <inttypes.h> 27 # endif 28 # if HAVE_STDINT_H 29 # include <stdint.h> 30 # endif 31 # include <stdbool.h> 32 # include "dev-ino.h" 33 34 struct cycle_check_state 35 { 36 struct dev_ino dev_ino; 37 uintmax_t chdir_counter; 38 int magic; 39 }; 40 41 void cycle_check_init (struct cycle_check_state *state); 42 bool cycle_check (struct cycle_check_state *state, struct stat const *sb); 43 44 #endif 45