850460c0f1
An error message is written, the builtin is not executed, nonzero exit status is returned but the shell does not abort. This was already checked for special builtins and external commands, with the same consequences except that the shell aborts for special builtins. Obtained from: NetBSD
125 lines
4.1 KiB
C
125 lines
4.1 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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* 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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* $FreeBSD$
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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 0x01 /* variable is exported */
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#define VREADONLY 0x02 /* variable cannot be modified */
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#define VSTRFIXED 0x04 /* variable struct is statically allocated */
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#define VTEXTFIXED 0x08 /* text is statically allocated */
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#define VSTACK 0x10 /* text is allocated on the stack */
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#define VUNSET 0x20 /* the variable is not set */
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#define VNOFUNC 0x40 /* don't call the callback function */
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#define VNOSET 0x80 /* do not set variable - just readonly test */
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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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void (*func)(const char *);
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/* function to be called when */
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/* the variable gets set/unset */
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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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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 vppid;
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extern struct var vps1;
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extern struct var vps2;
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extern struct var vps4;
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#ifndef NO_HISTORY
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extern struct var vhistsize;
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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 ifsset() ((vifs.flags & VUNSET) == 0)
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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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#define ps4val() (vps4.text + 4)
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#define optindval() (voptind.text + 7)
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#ifndef NO_HISTORY
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#define histsizeval() (vhistsize.text + 9)
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#define termval() (vterm.text + 5)
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#endif
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#define mpathset() ((vmpath.flags & VUNSET) == 0)
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void initvar(void);
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void setvar(const char *, const char *, int);
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void setvareq(char *, int);
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struct strlist;
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void listsetvar(struct strlist *, int);
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char *lookupvar(const char *);
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char *bltinlookup(const char *, int);
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void bltinsetlocale(void);
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void bltinunsetlocale(void);
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char **environment(void);
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int showvarscmd(int, char **);
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int exportcmd(int, char **);
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int localcmd(int, char **);
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void mklocal(char *);
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void poplocalvars(void);
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int setvarcmd(int, char **);
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int unsetcmd(int, char **);
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int unsetvar(const char *);
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int setvarsafe(const char *, const char *, int);
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