5195be912e
merge of parallel duplicate work by Steve Price and myself. :-] There are some changes to the build that are my fault... mkinit.c was trying (poorly) to duplicate some of the work that make(1) is designed to do. The Makefile hackery is my fault too, the depend list was incomplete because of some explicit OBJS+= entries, so mkdep wasn't picking up their source file #includes. This closes a pile of /bin/sh PR's, but not all of them.. Submitted by: Steve Price <steve@bonsai.hiwaay.net>, peter
120 lines
4.0 KiB
C
120 lines
4.0 KiB
C
/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Kenneth Almquist.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* @(#)var.h 8.2 (Berkeley) 5/4/95
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* $Id: var.h,v 1.2 1994/09/24 02:58:23 davidg Exp $
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*/
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/*
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* Shell variables.
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*/
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/* flags */
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#define VEXPORT 01 /* variable is exported */
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#define VREADONLY 02 /* variable cannot be modified */
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#define VSTRFIXED 04 /* variable struct is staticly allocated */
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#define VTEXTFIXED 010 /* text is staticly allocated */
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#define VSTACK 020 /* text is allocated on the stack */
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#define VUNSET 040 /* the variable is not set */
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struct var {
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struct var *next; /* next entry in hash list */
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int flags; /* flags are defined above */
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char *text; /* name=value */
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};
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struct localvar {
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struct localvar *next; /* next local variable in list */
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struct var *vp; /* the variable that was made local */
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int flags; /* saved flags */
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char *text; /* saved text */
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};
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struct localvar *localvars;
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#if ATTY
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extern struct var vatty;
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#endif
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extern struct var vifs;
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extern struct var vmail;
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extern struct var vmpath;
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extern struct var vpath;
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extern struct var vps1;
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extern struct var vps2;
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#if ATTY
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extern struct var vterm;
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#endif
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/*
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* The following macros access the values of the above variables.
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* They have to skip over the name. They return the null string
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* for unset variables.
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*/
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#define ifsval() (vifs.text + 4)
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#define mailval() (vmail.text + 5)
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#define mpathval() (vmpath.text + 9)
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#define pathval() (vpath.text + 5)
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#define ps1val() (vps1.text + 4)
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#define ps2val() (vps2.text + 4)
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#if ATTY
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#define termval() (vterm.text + 5)
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#endif
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#if ATTY
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#define attyset() ((vatty.flags & VUNSET) == 0)
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#endif
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#define mpathset() ((vmpath.flags & VUNSET) == 0)
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void initvar __P((void));
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void setvar __P((char *, char *, int));
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void setvareq __P((char *, int));
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struct strlist;
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void listsetvar __P((struct strlist *));
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char *lookupvar __P((char *));
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char *bltinlookup __P((char *, int));
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char **environment __P((void));
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void shprocvar __P((void));
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int showvarscmd __P((int, char **));
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int exportcmd __P((int, char **));
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int localcmd __P((int, char **));
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void mklocal __P((char *));
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void poplocalvars __P((void));
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int setvarcmd __P((int, char **));
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int unsetcmd __P((int, char **));
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