aa9caaf657
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
107 lines
3.9 KiB
C
107 lines
3.9 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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* @(#)error.h 8.2 (Berkeley) 5/4/95
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* $Id: error.h,v 1.2 1994/09/24 02:57:28 davidg Exp $
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*/
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/*
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* Types of operations (passed to the errmsg routine).
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*/
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#define E_OPEN 01 /* opening a file */
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#define E_CREAT 02 /* creating a file */
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#define E_EXEC 04 /* executing a program */
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/*
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* We enclose jmp_buf in a structure so that we can declare pointers to
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* jump locations. The global variable handler contains the location to
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* jump to when an exception occurs, and the global variable exception
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* contains a code identifying the exeception. To implement nested
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* exception handlers, the user should save the value of handler on entry
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* to an inner scope, set handler to point to a jmploc structure for the
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* inner scope, and restore handler on exit from the scope.
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*/
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#include <setjmp.h>
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struct jmploc {
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jmp_buf loc;
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};
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extern struct jmploc *handler;
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extern int exception;
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/* exceptions */
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#define EXINT 0 /* SIGINT received */
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#define EXERROR 1 /* a generic error */
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#define EXSHELLPROC 2 /* execute a shell procedure */
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/*
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* These macros allow the user to suspend the handling of interrupt signals
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* over a period of time. This is similar to SIGHOLD to or sigblock, but
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* much more efficient and portable. (But hacking the kernel is so much
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* more fun than worrying about efficiency and portability. :-))
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*/
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extern volatile int suppressint;
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extern volatile int intpending;
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extern char *commandname; /* name of command--printed on error */
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#define INTOFF suppressint++
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#define INTON { if (--suppressint == 0 && intpending) onint(); }
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#define FORCEINTON {suppressint = 0; if (intpending) onint();}
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#define CLEAR_PENDING_INT intpending = 0
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#define int_pending() intpending
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void exraise __P((int));
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void onint __P((void));
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void error2 __P((char *, char *));
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void error __P((char *, ...));
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char *errmsg __P((int, int));
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/*
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* BSD setjmp saves the signal mask, which violates ANSI C and takes time,
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* so we use _setjmp instead.
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*/
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#ifdef BSD
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#define setjmp(jmploc) _setjmp(jmploc)
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#define longjmp(jmploc, val) _longjmp(jmploc, val)
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#endif
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