| 0,0 → 1,109 |
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| /* $NetBSD: error.h,v 1.13 1999/07/09 03:05:49 christos Exp $ */ |
| |
| /*- |
| * 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 8.2 (Berkeley) 5/4/95 |
| */ |
| |
| /* |
| * 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> |
| #include "fake.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 */ |
| #define EXEXEC 3 /* command execution failed */ |
| |
| |
| /* |
| * 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(); } |
| #define FORCEINTON {suppressint = 0; if (intpending) onint();} |
| #define CLEAR_PENDING_INT intpending = 0 |
| #define int_pending() intpending |
| |
| void exraise (int) __attribute__((__noreturn__)); |
| void onint (void); |
| void error (const char *, ...) __attribute__((__noreturn__)); |
| void exerror (int, const char *, ...) __attribute__((__noreturn__)); |
| const char *errmsg (int, int); |
| |
| |
| /* |
| * BSD setjmp saves the signal mask, which violates ANSI C and takes time, |
| * so we use _setjmp instead. |
| */ |
| |
| #if defined(BSD) && !defined(__SVR4) && !defined(__GLIBC__) |
| #define setjmp(jmploc) _setjmp(jmploc) |
| #define longjmp(jmploc, val) _longjmp(jmploc, val) |
| #endif |