1 /* $OpenBSD: telldir.h,v 1.3 2007/10/12 22:41:42 chl Exp $ */ 2 /* 3 * Copyright (c) 1983, 1993 4 * The Regents of the University of California. All rights reserved. 5 * 6 * Copyright (c) 2000 7 * Daniel Eischen. All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 * 33 * $FreeBSD: src/lib/libc/gen/telldir.h,v 1.2 2001/01/24 12:59:24 deischen Exp $ 34 */ 35 36 #ifndef _TELLDIR_H_ 37 #define _TELLDIR_H_ 38 39 /* 40 * One of these structures is malloced to describe the current directory 41 * position each time telldir is called. It records the current magic 42 * cookie returned by getdirentries and the offset within the buffer 43 * associated with that return value. 44 */ 45 struct ddloc { 46 long loc_seek; /* magic cookie returned by getdirentries */ 47 long loc_loc; /* offset of entry in buffer */ 48 }; 49 50 /* 51 * One of these structures is malloced for each DIR to record telldir 52 * positions. 53 */ 54 struct _telldir { 55 struct ddloc *td_locs; /* locations */ 56 size_t td_sz; /* size of locations */ 57 long td_loccnt; /* index of entry for sequential readdir's */ 58 long td_last; /* last tell/seekdir */ 59 }; 60 61 long _telldir_unlocked(DIR *); 62 void __seekdir(DIR *, long); 63 64 #endif 65