1 /* 2 * panic.c - terminate fast in case of error 3 * Copyright (C) 1993 Thomas Koenig 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. The name of the author(s) may not be used to endorse or promote 11 * products derived from this software without specific prior written 12 * permission. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 17 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 21 * THEORY OF LIABILITY, WETHER IN CONTRACT, STRICT LIABILITY, OR TORT 22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 24 */ 25 26 /* System Headers */ 27 28 #include <errno.h> 29 #include <stdio.h> 30 #include <stdlib.h> 31 #include <unistd.h> 32 33 /* Local headers */ 34 35 #include "panic.h" 36 #include "at.h" 37 38 /* File scope variables */ 39 40 static char rcsid[] = "$Id: panic.c,v 1.6 1997/02/22 19:54:06 peter Exp $"; 41 42 /* External variables */ 43 44 /* Global functions */ 45 46 void 47 panic(char *a) 48 { 49 /* Something fatal has happened, print error message and exit. 50 */ 51 fprintf(stderr,"%s: %s\n",namep,a); 52 if (fcreated) 53 unlink(atfile); 54 55 exit (EXIT_FAILURE); 56 } 57 58 void 59 perr(char *a) 60 { 61 /* Some operating system error; print error message and exit. 62 */ 63 perror(a); 64 if (fcreated) 65 unlink(atfile); 66 67 exit(EXIT_FAILURE); 68 } 69 70 void 71 usage(void) 72 { 73 /* Print usage and exit. */ 74 fprintf(stderr, "usage: at [-V] [-q x] [-f file] [-m] time\n" 75 " at [-V] -c job [job ...]\n" 76 " atq [-V] [-q x] [-v]\n" 77 " atrm [-V] job [job ...]\n" 78 " batch [-V] [-f file] [-m]\n"); 79 exit(EXIT_FAILURE); 80 } 81