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panic.c revision 1.8 
      1 /*	$NetBSD: panic.c,v 1.8 2000/10/04 19:24:59 mjl 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 <stdio.h>
     33 #include <stdlib.h>
     34 #include <unistd.h>
     35 
     36 /* Local headers */
     37 
     38 #include "panic.h"
     39 #include "at.h"
     40 #include "privs.h"
     41 
     42 /* File scope variables */
     43 
     44 #ifndef lint
     45 #if 0
     46 static char rcsid[] = "$OpenBSD: panic.c,v 1.4 1997/03/01 23:40:09 millert Exp $";
     47 #else
     48 __RCSID("$NetBSD: panic.c,v 1.8 2000/10/04 19:24:59 mjl Exp $");
     49 #endif
     50 #endif
     51 
     52 /* External variables */
     53 
     54 /* Global functions */
     55 
     56 void
     57 panic(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 
     69 	errx(EXIT_FAILURE, "%s: %s", namep, a);
     70 }
     71 
     72 void
     73 perr(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 
     86 	exit(EXIT_FAILURE);
     87 }
     88 
     89 void
     90 perr2(char *a, char *b)
     91 {
     92 
     93 	(void)fputs(a, stderr);
     94 	perr(b);
     95 }
     96 
     97 void
     98 usage(void)
     99 {
    100 
    101 	/* Print usage and exit.  */
    102 	(void)fprintf(stderr,   "Usage: at [-V] [-q x] [-f file] [-m] time\n"
    103 				"       at [-V] -c job [job ...]\n"
    104 				"       atq [-V] [-q x] [-v]\n"
    105 				"       atrm [-V] job [job ...]\n"
    106 				"       batch [-V] [-f file] [-m]\n");
    107 	exit(EXIT_FAILURE);
    108 }
    109