lprm.c

<B>Digital的Unix操作系统VAX 4.2源码</B>

#ifndef lint
static char *sccsid = "@(#)lprm.c	4.1      ULTRIX 7/2/90";
#endif

/************************************************************************
 *									*
 *			Copyright (c) 1988 by				*
 *		Digital Equipment Corporation, Maynard, MA		*
 *			All rights reserved.				*
 *									*
 *   This software is furnished under a license and may be used and	*
 *   copied  only  in accordance with the terms of such license and	*
 *   with the  inclusion  of  the  above  copyright  notice.   This	*
 *   software  or  any  other copies thereof may not be provided or	*
 *   otherwise made available to any other person.  No title to and	*
 *   ownership of the software is hereby transferred.			*
 *									*
 *   This software is  derived  from  software  received  from  the	*
 *   University    of   California,   Berkeley,   and   from   Bell	*
 *   Laboratories.  Use, duplication, or disclosure is  subject  to	*
 *   restrictions  under  license  agreements  with  University  of	*
 *   California and with AT&T.						*
 *									*
 *   The information in this software is subject to change  without	*
 *   notice  and should not be construed as a commitment by Digital	*
 *   Equipment Corporation.						*
 *									*
 *   Digital assumes no responsibility for the use  or  reliability	*
 *   of its software on equipment which is not supplied by Digital.	*
 *									*
 ************************************************************************/


/*
 * lprm - remove the current user's spool entry
 *
 * lprm [-] [[job #] [user] ...]
 *
 * Using information in the lock file, lprm will kill the
 * currently active daemon (if necessary), remove the associated files,
 * and startup a new daemon.  Priviledged users may remove anyone's spool
 * entries, otherwise one can only remove their own.
 */

/* SCCS history beginning
 * ***************************************************************
 *                -- Revision History --
 * ***************************************************************
 * 
 * 1.1  01/11/83 -- sccs
 * date and time created 83/11/01 20:58:15 by sccs
 * 
 * ***************************************************************
 * 
 * 1.2  12/07/88 -- maxwell
 * moved usage message from stdout to stderr
 * 
 * 
 * ***************************************************************
 *
 * 1.3  19/07/88 -- thoms
 * Added copyright notice and modification history
 *
 * SCCS history end
 */


#include "lp.h"

/*
 * Stuff for handling job specifications
 */
char	*user[MAXUSERS];	/* users to process */
int	users;			/* # of users in user array */
int	requ[MAXREQUESTS];	/* job number of spool entries */
int	requests;		/* # of spool requests */
char	*person;		/* name of person doing lprm */
static char 	*logfile = DEFLOGF;

static char	luser[16];	/* buffer for person */

struct passwd *getpwuid();

main(argc, argv)
	char *argv[];
{
	register char *arg;
	struct passwd *p;
	struct direct **files;
	int nitems, assasinated = 0;

	name = argv[0];
	gethostname(host, sizeof(host));
	if ((p = getpwuid(getuid())) == NULL)
		fatal("Who are you?");
	if (strlen(p->pw_name) >= sizeof(luser))
		fatal("Your name is too long");
	strcpy(luser, p->pw_name);
	person = luser;
	while (--argc) {
		if ((arg = *++argv)[0] == '-')
			switch (arg[1]) {
			case 'L':
				argc--;
				logfile = *++argv;
				(void) freopen(logfile, O_WRONLY|O_APPEND, stderr);
				break;
			case 'P':
				if (arg[2])
					printer = &arg[2];
				else if (argc > 1) {
					argc--;
					printer = *++argv;
				}
				break;
			case '\0':
				if (!users) {
					users = -1;
					break;
				}
			default:
				usage();
			}
		else {
			if (users < 0)
				usage();
			if (isdigit(arg[0])) {
				if (requests >= MAXREQUESTS)
					fatal("Too many requests");
				requ[requests++] = atoi(arg);
			} else {
				if (users >= MAXUSERS)
					fatal("Too many users");
				user[users++] = arg;
			}
		}
	}
	if (printer == NULL && (printer = getenv("PRINTER")) == NULL)
		printer = DEFLP;

	rmjob();
}

static
usage()
{
	fprintf(stderr,"usage: lprm [-] [-Pprinter] [[job #] [user] ...]\n");
	exit(2);
}