sh.dir.h revision 59243
1/* $Header: /src/pub/tcsh/sh.dir.h,v 3.5 1997/10/27 22:44:26 christos Exp $ */ 2/* 3 * sh.dir.h: Directory data structures and globals 4 */ 5/*- 6 * Copyright (c) 1980, 1991 The Regents of the University of California. 7 * 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. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed by the University of 20 * California, Berkeley and its contributors. 21 * 4. Neither the name of the University nor the names of its contributors 22 * may be used to endorse or promote products derived from this software 23 * without specific prior written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 */ 37#ifndef _h_sh_dir 38#define _h_sh_dir 39/* 40 * Structure for entries in directory stack. 41 */ 42struct directory { 43 struct directory *di_next; /* next in loop */ 44 struct directory *di_prev; /* prev in loop */ 45 unsigned short *di_count; /* refcount of processes */ 46 Char *di_name; /* actual name */ 47}; 48EXTERN struct directory *dcwd IZERO_STRUCT; /* the one we are in now */ 49EXTERN int symlinks; 50 51#define SYM_CHASE 1 52#define SYM_IGNORE 2 53#define SYM_EXPAND 3 54 55#define TRM(a) ((a) & TRIM) 56#define NTRM(a) (a) 57#define ISDOT(c) (NTRM((c)[0]) == '.' && ((NTRM((c)[1]) == '\0') || \ 58 (NTRM((c)[1]) == '/'))) 59#define ISDOTDOT(c) (NTRM((c)[0]) == '.' && ISDOT(&((c)[1]))) 60 61#endif /* _h_sh_dir */ 62