at.tproj/panic.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * panic.c - terminate fast in case of error
  27  * Copyright (c) 1993 by Thomas Koenig
  28  * All rights reserved.
  29  *
  30  * Redistribution and use in source and binary forms, with or without
  31  * modification, are permitted provided that the following conditions
  32  * are met:
  33  * 1. Redistributions of source code must retain the above copyright
  34  *    notice, this list of conditions and the following disclaimer.
  35  * 2. The name of the author(s) may not be used to endorse or promote
  36  *    products derived from this software without specific prior written
  37  *    permission.
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
  40  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  41  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  42  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  43  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  44  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  45  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  46  * THEORY OF LIABILITY, WETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  47  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  48  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  49  */
  50
  51 /* System Headers */
  52
  53 #include <errno.h>
  54 #include <stdio.h>
  55 #include <stdlib.h>
  56 #include <unistd.h>
  57
  58 /* Local headers */
  59
  60 #include "panic.h"
  61 #include "at.h"
  62
  63 /* File scope variables */
  64
  65 static char rcsid[] = "$Id: panic.c,v 1.1.1.2 2000/01/11 02:10:05 wsanchez Exp $";
  66
  67 /* External variables */
  68
  69 /* Global functions */
  70
  71 #ifdef __APPLE__
  72 __private_extern__
  73 #endif
  74 void
  75 panic(a)
  76         char *a;
  77 {
  78 /* Something fatal has happened, print error message and exit.
  79  */
  80         fprintf(stderr, "%s: %s\n", namep, a);
  81         if (fcreated)
  82                 unlink(atfile);
  83
  84         exit(EXIT_FAILURE);
  85 }
  86
  87 void
  88 perr(a)
  89         char *a;
  90 {
  91 /* Some operating system error; print error message and exit.
  92  */
  93         perror(a);
  94         if (fcreated)
  95                 unlink(atfile);
  96
  97         exit(EXIT_FAILURE);
  98 }
  99
 100 void
 101 perr2(a, b)
 102         char *a, *b;
 103 {
 104         fprintf(stderr, "%s", a);
 105         perr(b);
 106 }
 107
 108 void
 109 usage(void)
 110 {
 111 /* Print usage and exit.
 112 */
 113         fprintf(stderr, "Usage: at [-q x] [-f file] [-m] time\n"
 114             "       atq [-q x] [-v]\n"
 115             "       atrm [-q x] job ...\n"
 116             "       batch [-f file] [-m]\n");
 117         exit(EXIT_FAILURE);
 118 }