Return to panic.c CVS log

Up to [local] / src / usr.bin / at

Only print usage for the command that was run (at, atq, atrm, batch), not
all four.  Also differentiate between the touch(1) style time as time_arg
and the at(1) style time as timespec (which is what SUS3 does).
Instead of referring to the touch time format as POSIX time, reference
touch.  This is what SUS3 does and it is what users will know.

/*	$OpenBSD: panic.c,v 1.9 2002/05/13 16:12:07 millert Exp $	*/
/*	$NetBSD: panic.c,v 1.2 1995/03/25 18:13:33 glass Exp $	*/

/*
 * panic.c - terminate fast in case of error
 * Copyright (c) 1993 by Thomas Koenig
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. The name of the author(s) may not be used to endorse or promote
 *    products derived from this software without specific prior written
 *    permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/* System Headers */

#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

/* Local headers */

#include "panic.h"
#include "at.h"
#include "privs.h"

/* File scope variables */

#ifndef lint
static const char rcsid[] = "$OpenBSD: panic.c,v 1.9 2002/05/13 16:12:07 millert Exp $";
#endif

/* External variables */

/* Global functions */

__dead void
panic(const char *a)
{
	/*
	 * Something fatal has happened, print error message and exit.
	 */
	(void)fprintf(stderr, "%s: %s\n", __progname, a);
	if (fcreated) {
		PRIV_START;
		unlink(atfile);
		PRIV_END;
	}

	exit(EXIT_FAILURE);
}

__dead void
perr(const char *a)
{
	/*
	 * Some operating system error; print error message and exit.
	 */
	perror(a);
	if (fcreated) {
		PRIV_START;
		unlink(atfile);
		PRIV_END;
	}

	exit(EXIT_FAILURE);
}

__dead void 
perr2(const char *a, const char *b)
{
	(void)fputs(a, stderr);
	perr(b);
}

__dead void
usage(void)
{
	/* Print usage and exit.  */
	switch (program) {
	case AT:
	case CAT:
		(void)fprintf(stderr,
		    "Usage: at [-blmrv] [-f file] [-q queue] -t time_arg\n"
		    "       at [-blmrv] [-f file] [-q queue] timespec\n"
		    "       at -c job [job ...]\n");
		break;
	case ATQ:
		(void)fprintf(stderr, "Usage: atq [-q queue] [-v]\n");
		break;
	case ATRM:
		(void)fprintf(stderr, "Usage: atrm job [job ...]\n");
		break;
	case BATCH:
		(void)fprintf(stderr,
		    "Usage: batch [-mv] [-f file] [-q queue] [timespec]\n");
		break;
	}
	exit(EXIT_FAILURE);
}