1 /* $NetBSD: panic.c,v 1.13 2008/04/05 16:26:57 christos Exp $ */ 2 3 /* 4 * panic.c - terminate fast in case of error 5 * Copyright (c) 1993 by Thomas Koenig 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. The name of the author(s) may not be used to endorse or promote 13 * products derived from this software without specific prior written 14 * permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* System Headers */ 29 30 #include <err.h> 31 #include <errno.h> 32 #include <stdbool.h> 33 #include <stdio.h> 34 #include <stdlib.h> 35 #include <unistd.h> 36 37 /* Local headers */ 38 39 #include "panic.h" 40 #include "at.h" 41 #include "privs.h" 42 43 /* File scope variables */ 44 45 #ifndef lint 46 #if 0 47 static char rcsid[] = "$OpenBSD: panic.c,v 1.4 1997/03/01 23:40:09 millert Exp $"; 48 #else 49 __RCSID("$NetBSD: panic.c,v 1.13 2008/04/05 16:26:57 christos Exp $"); 50 #endif 51 #endif 52 53 /* Global functions */ 54 55 __dead 56 void 57 panic(const char *a) 58 { 59 60 /* 61 * Something fatal has happened, print error message and exit. 62 */ 63 if (fcreated) { 64 PRIV_START; 65 (void)unlink(atfile); 66 PRIV_END; 67 } 68 errx(EXIT_FAILURE, "%s", a); 69 } 70 71 __dead 72 void 73 perr(const char *a) 74 { 75 76 /* 77 * Some operating system error; print error message and exit. 78 */ 79 perror(a); 80 if (fcreated) { 81 PRIV_START; 82 (void)unlink(atfile); 83 PRIV_END; 84 } 85 exit(EXIT_FAILURE); 86 } 87 88 __dead 89 void 90 usage(void) 91 { 92 93 /* Print usage and exit. */ 94 (void)fprintf(stderr, 95 "usage: at [-bdlmrVv] [-f file] [-q queue] -t [[CC]YY]MMDDhhmm[.SS]\n" 96 " at [-bdlmrVv] [-f file] [-q queue] time\n" 97 " at [-V] -c job [job ...]\n" 98 " atq [-Vv] [-q queue]\n" 99 " atrm [-V] job [job ...]\n" 100 " batch [-mVv] [-f file] [-q queue] [-t [[CC]YY]MMDDhhmm[.SS]]\n" 101 " batch [-mVv] [-f file] [-q queue] [time]\n"); 102 exit(EXIT_FAILURE); 103 } 104