mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-16 10:20:30 +00:00
115 lines
3.9 KiB
C
115 lines
3.9 KiB
C
/*-
|
|
* Copyright (c) 1991, 1993
|
|
* The Regents of the University of California. All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to Berkeley by
|
|
* Kenneth Almquist.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
* 3. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. Neither the name of the University nor the names of its contributors
|
|
* may be used to endorse or promote products derived from this software
|
|
* without specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
|
* SUCH DAMAGE.
|
|
*
|
|
* @(#)error.h 8.1 (Berkeley) 5/31/93
|
|
* $Id$
|
|
*/
|
|
|
|
/*
|
|
* Types of operations (passed to the errmsg routine).
|
|
*/
|
|
|
|
#define E_OPEN 01 /* opening a file */
|
|
#define E_CREAT 02 /* creating a file */
|
|
#define E_EXEC 04 /* executing a program */
|
|
|
|
|
|
/*
|
|
* We enclose jmp_buf in a structure so that we can declare pointers to
|
|
* jump locations. The global variable handler contains the location to
|
|
* jump to when an exception occurs, and the global variable exception
|
|
* contains a code identifying the exeception. To implement nested
|
|
* exception handlers, the user should save the value of handler on entry
|
|
* to an inner scope, set handler to point to a jmploc structure for the
|
|
* inner scope, and restore handler on exit from the scope.
|
|
*/
|
|
|
|
#include <setjmp.h>
|
|
|
|
struct jmploc {
|
|
jmp_buf loc;
|
|
};
|
|
|
|
extern struct jmploc *handler;
|
|
extern int exception;
|
|
|
|
/* exceptions */
|
|
#define EXINT 0 /* SIGINT received */
|
|
#define EXERROR 1 /* a generic error */
|
|
#define EXSHELLPROC 2 /* execute a shell procedure */
|
|
|
|
|
|
/*
|
|
* These macros allow the user to suspend the handling of interrupt signals
|
|
* over a period of time. This is similar to SIGHOLD to or sigblock, but
|
|
* much more efficient and portable. (But hacking the kernel is so much
|
|
* more fun than worrying about efficiency and portability. :-))
|
|
*/
|
|
|
|
extern volatile int suppressint;
|
|
extern volatile int intpending;
|
|
extern char *commandname; /* name of command--printed on error */
|
|
|
|
#define INTOFF suppressint++
|
|
#define INTON if (--suppressint == 0 && intpending) onint(); else
|
|
#define FORCEINTON {suppressint = 0; if (intpending) onint();}
|
|
#define CLEAR_PENDING_INT intpending = 0
|
|
#define int_pending() intpending
|
|
|
|
#ifdef __STDC__
|
|
void exraise(int);
|
|
void onint(void);
|
|
void error2(char *, char *);
|
|
void error(char *, ...);
|
|
char *errmsg(int, int);
|
|
#else
|
|
void exraise();
|
|
void onint();
|
|
void error2();
|
|
void error();
|
|
char *errmsg();
|
|
#endif
|
|
|
|
|
|
/*
|
|
* BSD setjmp saves the signal mask, which violates ANSI C and takes time,
|
|
* so we use _setjmp instead.
|
|
*/
|
|
|
|
#ifdef BSD
|
|
#define setjmp(jmploc) _setjmp(jmploc)
|
|
#define longjmp(jmploc, val) _longjmp(jmploc, val)
|
|
#endif
|