var.h revision 1.8
1 1.8 cgd /* $NetBSD: var.h,v 1.8 1995/03/21 09:10:38 cgd Exp $ */ 2 1.8 cgd 3 1.1 cgd /*- 4 1.5 jtc * Copyright (c) 1991, 1993 5 1.5 jtc * The Regents of the University of California. All rights reserved. 6 1.1 cgd * 7 1.1 cgd * This code is derived from software contributed to Berkeley by 8 1.1 cgd * Kenneth Almquist. 9 1.1 cgd * 10 1.1 cgd * Redistribution and use in source and binary forms, with or without 11 1.1 cgd * modification, are permitted provided that the following conditions 12 1.1 cgd * are met: 13 1.1 cgd * 1. Redistributions of source code must retain the above copyright 14 1.1 cgd * notice, this list of conditions and the following disclaimer. 15 1.1 cgd * 2. Redistributions in binary form must reproduce the above copyright 16 1.1 cgd * notice, this list of conditions and the following disclaimer in the 17 1.1 cgd * documentation and/or other materials provided with the distribution. 18 1.1 cgd * 3. All advertising materials mentioning features or use of this software 19 1.1 cgd * must display the following acknowledgement: 20 1.1 cgd * This product includes software developed by the University of 21 1.1 cgd * California, Berkeley and its contributors. 22 1.1 cgd * 4. Neither the name of the University nor the names of its contributors 23 1.1 cgd * may be used to endorse or promote products derived from this software 24 1.1 cgd * without specific prior written permission. 25 1.1 cgd * 26 1.1 cgd * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 1.1 cgd * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 1.1 cgd * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 1.1 cgd * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 1.1 cgd * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 1.1 cgd * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 1.1 cgd * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 1.1 cgd * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 1.1 cgd * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 1.1 cgd * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 1.1 cgd * SUCH DAMAGE. 37 1.1 cgd * 38 1.8 cgd * @(#)var.h 8.1 (Berkeley) 5/31/93 39 1.1 cgd */ 40 1.1 cgd 41 1.1 cgd /* 42 1.1 cgd * Shell variables. 43 1.1 cgd */ 44 1.1 cgd 45 1.1 cgd /* flags */ 46 1.1 cgd #define VEXPORT 01 /* variable is exported */ 47 1.1 cgd #define VREADONLY 02 /* variable cannot be modified */ 48 1.1 cgd #define VSTRFIXED 04 /* variable struct is staticly allocated */ 49 1.1 cgd #define VTEXTFIXED 010 /* text is staticly allocated */ 50 1.1 cgd #define VSTACK 020 /* text is allocated on the stack */ 51 1.1 cgd #define VUNSET 040 /* the variable is not set */ 52 1.1 cgd 53 1.1 cgd 54 1.1 cgd struct var { 55 1.1 cgd struct var *next; /* next entry in hash list */ 56 1.1 cgd int flags; /* flags are defined above */ 57 1.1 cgd char *text; /* name=value */ 58 1.1 cgd }; 59 1.1 cgd 60 1.1 cgd 61 1.1 cgd struct localvar { 62 1.1 cgd struct localvar *next; /* next local variable in list */ 63 1.1 cgd struct var *vp; /* the variable that was made local */ 64 1.1 cgd int flags; /* saved flags */ 65 1.1 cgd char *text; /* saved text */ 66 1.1 cgd }; 67 1.1 cgd 68 1.1 cgd 69 1.1 cgd struct localvar *localvars; 70 1.1 cgd 71 1.1 cgd #if ATTY 72 1.1 cgd extern struct var vatty; 73 1.1 cgd #endif 74 1.1 cgd extern struct var vifs; 75 1.1 cgd extern struct var vmail; 76 1.1 cgd extern struct var vmpath; 77 1.1 cgd extern struct var vpath; 78 1.1 cgd extern struct var vps1; 79 1.1 cgd extern struct var vps2; 80 1.1 cgd #if ATTY 81 1.1 cgd extern struct var vterm; 82 1.1 cgd #endif 83 1.1 cgd 84 1.1 cgd /* 85 1.1 cgd * The following macros access the values of the above variables. 86 1.1 cgd * They have to skip over the name. They return the null string 87 1.1 cgd * for unset variables. 88 1.1 cgd */ 89 1.1 cgd 90 1.1 cgd #define ifsval() (vifs.text + 4) 91 1.1 cgd #define mailval() (vmail.text + 5) 92 1.1 cgd #define mpathval() (vmpath.text + 9) 93 1.1 cgd #define pathval() (vpath.text + 5) 94 1.1 cgd #define ps1val() (vps1.text + 4) 95 1.1 cgd #define ps2val() (vps2.text + 4) 96 1.1 cgd #if ATTY 97 1.1 cgd #define termval() (vterm.text + 5) 98 1.1 cgd #endif 99 1.1 cgd 100 1.1 cgd #if ATTY 101 1.1 cgd #define attyset() ((vatty.flags & VUNSET) == 0) 102 1.1 cgd #endif 103 1.1 cgd #define mpathset() ((vmpath.flags & VUNSET) == 0) 104 1.1 cgd 105 1.1 cgd 106 1.1 cgd #ifdef __STDC__ 107 1.1 cgd void initvar(); 108 1.1 cgd void setvar(char *, char *, int); 109 1.1 cgd void setvareq(char *, int); 110 1.1 cgd struct strlist; 111 1.1 cgd void listsetvar(struct strlist *); 112 1.1 cgd char *lookupvar(char *); 113 1.1 cgd char *bltinlookup(char *, int); 114 1.1 cgd char **environment(); 115 1.1 cgd int showvarscmd(int, char **); 116 1.1 cgd void mklocal(char *); 117 1.1 cgd void poplocalvars(void); 118 1.7 cgd int unsetcmd(int, char **); 119 1.1 cgd #else 120 1.1 cgd void initvar(); 121 1.1 cgd void setvar(); 122 1.1 cgd void setvareq(); 123 1.1 cgd void listsetvar(); 124 1.1 cgd char *lookupvar(); 125 1.1 cgd char *bltinlookup(); 126 1.1 cgd char **environment(); 127 1.1 cgd int showvarscmd(); 128 1.1 cgd void mklocal(); 129 1.1 cgd void poplocalvars(); 130 1.7 cgd int unsetcmd(); 131 1.1 cgd #endif 132
Indexes created Mon Sep 29 21:09:56 GMT 2025