1/*	$NetBSD: panic.c,v 1.14 2016/03/13 00:32:09 dholland 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
47static char rcsid[] = "$OpenBSD: panic.c,v 1.4 1997/03/01 23:40:09 millert Exp $";
48#else
49__RCSID("$NetBSD: panic.c,v 1.14 2016/03/13 00:32:09 dholland Exp $");
50#endif
51#endif
52
53/* Global functions */
54
55__dead
56void
57panic(const char *a)
58{
59
60	/*
61	 * Something fatal has happened, print error message and exit.
62	 */
63	if (fcreated) {
64		privs_enter();
65		(void)unlink(atfile);
66		privs_exit();
67	}
68	errx(EXIT_FAILURE, "%s", a);
69}
70
71__dead
72void
73perr(const char *a)
74{
75
76	/*
77	 * Some operating system error; print error message and exit.
78	 */
79	perror(a);
80	if (fcreated) {
81		privs_enter();
82		(void)unlink(atfile);
83		privs_exit();
84	}
85	exit(EXIT_FAILURE);
86}
87
88__dead
89void
90privs_fail(const char *msg)
91{
92	perr(msg);
93}
94
95__dead
96void
97usage(void)
98{
99
100	/* Print usage and exit.  */
101	(void)fprintf(stderr,
102	    "usage: at [-bdlmrVv] [-f file] [-q queue] -t [[CC]YY]MMDDhhmm[.SS]\n"
103	    "       at [-bdlmrVv] [-f file] [-q queue] time\n"
104	    "       at [-V] -c job [job ...]\n"
105	    "       atq [-Vv] [-q queue]\n"
106	    "       atrm [-V] job [job ...]\n"
107	    "       batch [-mVv] [-f file] [-q queue] [-t [[CC]YY]MMDDhhmm[.SS]]\n"
108	    "       batch [-mVv] [-f file] [-q queue] [time]\n");
109	exit(EXIT_FAILURE);
110}
111