1 /* $Header: /p/tcsh/cvsroot/tcsh/sh.dir.h,v 3.6 2002/03/08 17:36:46 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. 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 #ifndef _h_sh_dir 34 #define _h_sh_dir 35 /* 36 * Structure for entries in directory stack. 37 */ 38 struct directory { 39 struct directory *di_next; /* next in loop */ 40 struct directory *di_prev; /* prev in loop */ 41 unsigned short *di_count; /* refcount of processes */ 42 Char *di_name; /* actual name */ 43 }; 44 EXTERN struct directory *dcwd IZERO_STRUCT; /* the one we are in now */ 45 EXTERN int symlinks; 46 47 #define SYM_CHASE 1 48 #define SYM_IGNORE 2 49 #define SYM_EXPAND 3 50 51 #define TRM(a) ((a) & TRIM) 52 #define NTRM(a) (a) 53 #define ISDOT(c) (NTRM((c)[0]) == '.' && ((NTRM((c)[1]) == '\0') || \ 54 (NTRM((c)[1]) == '/'))) 55 #define ISDOTDOT(c) (NTRM((c)[0]) == '.' && ISDOT(&((c)[1]))) 56 57 #endif /* _h_sh_dir */ 58