at.tproj/panic.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * "Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.0 (the 'License').  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License."
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * panic.c - terminate fast in case of error
  26  * Copyright (c) 1993 by Thomas Koenig
  27  * All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  * 1. Redistributions of source code must retain the above copyright
  33  *    notice, this list of conditions and the following disclaimer.
  34  * 2. The name of the author(s) may not be used to endorse or promote
  35  *    products derived from this software without specific prior written
  36  *    permission.
  37  *
  38  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
  39  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  40  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  41  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  42  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  43  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  44  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  45  * THEORY OF LIABILITY, WETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  46  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  47  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  48  */
  49
  50 /* System Headers */
  51
  52 #include <errno.h>
  53 #include <stdio.h>
  54 #include <stdlib.h>
  55 #include <unistd.h>
  56
  57 /* Local headers */
  58
  59 #include "panic.h"
  60 #include "at.h"
  61
  62 /* File scope variables */
  63
  64 static char rcsid[] = "$Id: panic.c,v 1.1.1.2 2000/01/11 02:10:05 wsanchez Exp $";
  65
  66 /* External variables */
  67
  68 /* Global functions */
  69
  70 #ifdef __APPLE__
  71 __private_extern__
  72 #endif
  73 void
  74 panic(a)
  75         char *a;
  76 {
  77 /* Something fatal has happened, print error message and exit.
  78  */
  79         fprintf(stderr, "%s: %s\n", namep, a);
  80         if (fcreated)
  81                 unlink(atfile);
  82
  83         exit(EXIT_FAILURE);
  84 }
  85
  86 void
  87 perr(a)
  88         char *a;
  89 {
  90 /* Some operating system error; print error message and exit.
  91  */
  92         perror(a);
  93         if (fcreated)
  94                 unlink(atfile);
  95
  96         exit(EXIT_FAILURE);
  97 }
  98
  99 void
 100 perr2(a, b)
 101         char *a, *b;
 102 {
 103         fprintf(stderr, "%s", a);
 104         perr(b);
 105 }
 106
 107 void
 108 usage(void)
 109 {
 110 /* Print usage and exit.
 111 */
 112         fprintf(stderr, "Usage: at [-q x] [-f file] [-m] time\n"
 113             "       atq [-q x] [-v]\n"
 114             "       atrm [-q x] job ...\n"
 115             "       batch [-f file] [-m]\n");
 116         exit(EXIT_FAILURE);
 117 }