Rev 2714 | Details | Compare with Previous | Last modification | View Log | RSS feed
| Rev | Author | Line No. | Line |
|---|---|---|---|
| 2714 | cejka | 1 | /* $NetBSD: error.h,v 1.13 1999/07/09 03:05:49 christos Exp $ */ |
| 2 | |||
| 3 | /*- |
||
| 4 | * Copyright (c) 1991, 1993 |
||
| 5 | * The Regents of the University of California. All rights reserved. |
||
| 6 | * |
||
| 7 | * This code is derived from software contributed to Berkeley by |
||
| 8 | * Kenneth Almquist. |
||
| 9 | * |
||
| 10 | * Redistribution and use in source and binary forms, with or without |
||
| 11 | * modification, are permitted provided that the following conditions |
||
| 12 | * are met: |
||
| 13 | * 1. Redistributions of source code must retain the above copyright |
||
| 14 | * notice, this list of conditions and the following disclaimer. |
||
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
||
| 16 | * notice, this list of conditions and the following disclaimer in the |
||
| 17 | * documentation and/or other materials provided with the distribution. |
||
| 18 | * 3. All advertising materials mentioning features or use of this software |
||
| 19 | * must display the following acknowledgement: |
||
| 20 | * This product includes software developed by the University of |
||
| 21 | * California, Berkeley and its contributors. |
||
| 22 | * 4. Neither the name of the University nor the names of its contributors |
||
| 23 | * may be used to endorse or promote products derived from this software |
||
| 24 | * without specific prior written permission. |
||
| 25 | * |
||
| 26 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
||
| 27 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
||
| 28 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
||
| 29 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
||
| 30 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
||
| 31 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
||
| 32 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
||
| 33 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
||
| 34 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
||
| 35 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
||
| 36 | * SUCH DAMAGE. |
||
| 37 | * |
||
| 38 | * @(#)error.h 8.2 (Berkeley) 5/4/95 |
||
| 39 | */ |
||
| 40 | |||
| 41 | /* |
||
| 42 | * Types of operations (passed to the errmsg routine). |
||
| 43 | */ |
||
| 44 | |||
| 45 | #define E_OPEN 01 /* opening a file */ |
||
| 46 | #define E_CREAT 02 /* creating a file */ |
||
| 47 | #define E_EXEC 04 /* executing a program */ |
||
| 48 | |||
| 49 | |||
| 50 | /* |
||
| 51 | * We enclose jmp_buf in a structure so that we can declare pointers to |
||
| 52 | * jump locations. The global variable handler contains the location to |
||
| 53 | * jump to when an exception occurs, and the global variable exception |
||
| 54 | * contains a code identifying the exeception. To implement nested |
||
| 55 | * exception handlers, the user should save the value of handler on entry |
||
| 56 | * to an inner scope, set handler to point to a jmploc structure for the |
||
| 57 | * inner scope, and restore handler on exit from the scope. |
||
| 58 | */ |
||
| 59 | |||
| 60 | #include <setjmp.h> |
||
| 61 | #include "fake.h" |
||
| 62 | |||
| 63 | struct jmploc { |
||
| 64 | jmp_buf loc; |
||
| 65 | }; |
||
| 66 | |||
| 67 | extern struct jmploc *handler; |
||
| 68 | extern int exception; |
||
| 69 | |||
| 70 | /* exceptions */ |
||
| 71 | #define EXINT 0 /* SIGINT received */ |
||
| 72 | #define EXERROR 1 /* a generic error */ |
||
| 73 | #define EXSHELLPROC 2 /* execute a shell procedure */ |
||
| 74 | #define EXEXEC 3 /* command execution failed */ |
||
| 75 | |||
| 76 | |||
| 77 | /* |
||
| 78 | * These macros allow the user to suspend the handling of interrupt signals |
||
| 79 | * over a period of time. This is similar to SIGHOLD to or sigblock, but |
||
| 80 | * much more efficient and portable. (But hacking the kernel is so much |
||
| 81 | * more fun than worrying about efficiency and portability. :-)) |
||
| 82 | */ |
||
| 83 | |||
| 84 | extern volatile int suppressint; |
||
| 85 | extern volatile int intpending; |
||
| 86 | extern char *commandname; /* name of command--printed on error */ |
||
| 87 | |||
| 88 | #define INTOFF suppressint++ |
||
| 89 | #define INTON { if (--suppressint == 0 && intpending) onint(); } |
||
| 90 | #define FORCEINTON {suppressint = 0; if (intpending) onint();} |
||
| 91 | #define CLEAR_PENDING_INT intpending = 0 |
||
| 92 | #define int_pending() intpending |
||
| 93 | |||
| 94 | void exraise (int) __attribute__((__noreturn__)); |
||
| 95 | void onint (void); |
||
| 96 | void error (const char *, ...) __attribute__((__noreturn__)); |
||
| 97 | void exerror (int, const char *, ...) __attribute__((__noreturn__)); |
||
| 98 | const char *errmsg (int, int); |
||
| 99 | |||
| 100 | |||
| 101 | /* |
||
| 102 | * BSD setjmp saves the signal mask, which violates ANSI C and takes time, |
||
| 103 | * so we use _setjmp instead. |
||
| 104 | */ |
||
| 105 | |||
| 106 | #if defined(BSD) && !defined(__SVR4) && !defined(__GLIBC__) |
||
| 107 | #define setjmp(jmploc) _setjmp(jmploc) |
||
| 108 | #define longjmp(jmploc, val) _longjmp(jmploc, val) |
||
| 109 | #endif |