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    /*	$OpenBSD: ipcrm.c,v 1.12 2015/07/26 22:17:34 chl Exp $*/  | 
    
    
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    /*  | 
    
    
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     * Copyright (c) 1994 Adam Glass  | 
    
    
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     * All rights reserved.  | 
    
    
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     *  | 
    
    
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     * Redistribution and use in source and binary forms, with or without  | 
    
    
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     * modification, are permitted provided that the following conditions  | 
    
    
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     * are met:  | 
    
    
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     * 1. Redistributions of source code must retain the above copyright  | 
    
    
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     *    notice, this list of conditions and the following disclaimer.  | 
    
    
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     * 2. Redistributions in binary form must reproduce the above copyright  | 
    
    
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     *    notice, this list of conditions and the following disclaimer in the  | 
    
    
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     *    documentation and/or other materials provided with the distribution.  | 
    
    
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     * 3. All advertising materials mentioning features or use of this software  | 
    
    
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     *    must display the following acknowledgement:  | 
    
    
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     *	This product includes software developed by Adam Glass.  | 
    
    
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     * 4. The name of the Author may not be used to endorse or promote products  | 
    
    
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     *    derived from this software without specific prior written permission.  | 
    
    
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     *  | 
    
    
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     * THIS SOFTWARE IS PROVIDED BY Adam Glass ``AS IS'' AND  | 
    
    
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     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE  | 
    
    
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     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE  | 
    
    
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     * ARE DISCLAIMED.  IN NO EVENT SHALL Adam Glass BE LIABLE  | 
    
    
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     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL  | 
    
    
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     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS  | 
    
    
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     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)  | 
    
    
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     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT  | 
    
    
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     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY  | 
    
    
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     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF  | 
    
    
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     * SUCH DAMAGE.  | 
    
    
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     *  | 
    
    
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     */  | 
    
    
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    #include <sys/types.h>  | 
    
    
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    #include <sys/ipc.h>  | 
    
    
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    #include <sys/msg.h>  | 
    
    
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    #include <sys/sem.h>  | 
    
    
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    #include <sys/shm.h>  | 
    
    
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    #include <stdio.h>  | 
    
    
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    #include <unistd.h>  | 
    
    
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    #include <limits.h>  | 
    
    
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    #include <stdlib.h>  | 
    
    
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    #include <ctype.h>  | 
    
    
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    #include <err.h>  | 
    
    
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    #include <signal.h>  | 
    
    
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    #define IPC_TO_STR(x) (x == 'Q' ? "msq" : (x == 'M' ? "shm" : "sem"))  | 
    
    
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    #define IPC_TO_STRING(x) (x == 'Q' ? "message queue" : \  | 
    
    
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    	(x == 'M' ? "shared memory segment" : "semaphore"))  | 
    
    
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    int signaled;  | 
    
    
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    void	usage(void);  | 
    
    
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    int	msgrm(key_t, int);  | 
    
    
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    int	shmrm(key_t, int);  | 
    
    
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    int	semrm(key_t, int);  | 
    
    
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    void	not_configured(int);  | 
    
    
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    void  | 
    
    
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    usage(void)  | 
    
    
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    { | 
    
    
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    	extern char *__progname;  | 
    
    
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    	fprintf(stderr, "usage: %s [-M shmkey] [-m shmid] [-Q msgkey]\n"  | 
    
    
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    			"         [-q msqid] [-S semkey] [-s semid] ...\n",  | 
    
    
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    		__progname);  | 
    
    
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    	exit(1);  | 
    
    
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    }  | 
    
    
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    int  | 
    
    
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    msgrm(key_t key, int id)  | 
    
    
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    { | 
    
    
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    	if (key) { | 
    
    
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    		id = msgget(key, 0);  | 
    
    
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    		if (id == -1)  | 
    
    
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    			return (-1);  | 
    
    
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    	}  | 
    
    
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    	return (msgctl(id, IPC_RMID, NULL));  | 
    
    
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    }  | 
    
    
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    int  | 
    
    
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    shmrm(key_t key, int id)  | 
    
    
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    { | 
    
    
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    	if (key) { | 
    
    
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    		id = shmget(key, 0, 0);  | 
    
    
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    		if (id == -1)  | 
    
    
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    			return (-1);  | 
    
    
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    	}  | 
    
    
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    	return (shmctl(id, IPC_RMID, NULL));  | 
    
    
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    }  | 
    
    
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    int  | 
    
    
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    semrm(key_t key, int id)  | 
    
    
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    { | 
    
    
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    	union semun arg;  | 
    
    
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    	if (key) { | 
    
    
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    		id = semget(key, 0, 0);  | 
    
    
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    		if (id == -1)  | 
    
    
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    			return (-1);  | 
    
    
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    	}  | 
    
    
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    	return (semctl(id, 0, IPC_RMID, arg));  | 
    
    
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    }  | 
    
    
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    /* ARGSUSED */  | 
    
    
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    void  | 
    
    
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    not_configured(int signo)  | 
    
    
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    { | 
    
    
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    	signaled++;  | 
    
    
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    }  | 
    
    
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    int  | 
    
    
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    main(int argc, char *argv[])  | 
    
    
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    { | 
    
    
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    	int c, result, errflg, target_id;  | 
    
    
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    	const char *errstr;  | 
    
    
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    	key_t target_key;  | 
    
    
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    	errflg = 0;  | 
    
    
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    	signal(SIGSYS, not_configured);  | 
    
    
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    	while ((c = getopt(argc, argv, ":q:m:s:Q:M:S:")) != -1) { | 
    
    
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    		signaled = 0;  | 
    
    
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    		switch (c) { | 
    
    
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    		case 'q':  | 
    
    
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    		case 'm':  | 
    
    
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    		case 's':  | 
    
    
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    			target_id = strtonum(optarg, 0, INT_MAX, &errstr);  | 
    
    
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    			if (errstr)  | 
    
    
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    				errx(1, "-%c %s: %s\n", c, optarg, errstr);  | 
    
    
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    			if (c == 'q')  | 
    
    
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    				result = msgrm(0, target_id);  | 
    
    
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    			else if (c == 'm')  | 
    
    
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    				result = shmrm(0, target_id);  | 
    
    
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    			else  | 
    
    
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    				result = semrm(0, target_id);  | 
    
    
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    			if (result < 0) { | 
    
    
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    				errflg++;  | 
    
    
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    				if (!signaled)  | 
    
    
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    					warn("%sid(%d)", | 
    
    
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    					    IPC_TO_STR(toupper(c)), target_id);  | 
    
    
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    				else  | 
    
    
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    					warnx("%ss are not configured in the running kernel", | 
    
    
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    					    IPC_TO_STRING(toupper(c)));  | 
    
    
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    			}  | 
    
    
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    			break;  | 
    
    
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    		case 'Q':  | 
    
    
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    		case 'M':  | 
    
    
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    		case 'S':  | 
    
    
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    			target_key = atol(optarg);  | 
    
    
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    			if (target_key == IPC_PRIVATE) { | 
    
    
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    				warnx("can't remove private %ss", IPC_TO_STRING(c)); | 
    
    
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    				continue;  | 
    
    
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    			}  | 
    
    
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    			if (c == 'Q')  | 
    
    
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    				result = msgrm(target_key, 0);  | 
    
    
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    			else if (c == 'M')  | 
    
    
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    				result = shmrm(target_key, 0);  | 
    
    
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    			else  | 
    
    
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    				result = semrm(target_key, 0);  | 
    
    
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    			if (result < 0) { | 
    
    
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    				errflg++;  | 
    
    
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    				if (!signaled)  | 
    
    
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    					warn("%skey(%ld)", IPC_TO_STR(c), | 
    
    
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    					    target_key);  | 
    
    
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    				else  | 
    
    
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    					warnx("%ss are not configured in the running kernel", | 
    
    
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    					    IPC_TO_STRING(c));  | 
    
    
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    			}  | 
    
    
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    			break;  | 
    
    
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    		case ':':  | 
    
    
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    			warnx("option -%c requires an argument", optopt); | 
    
    
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    			usage();  | 
    
    
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    		default:  | 
    
    
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    			warnx("unrecognized option: -%c", optopt); | 
    
    
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    			usage();  | 
    
    
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    		}  | 
    
    
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    	}  | 
    
    
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    	if (optind != argc) { | 
    
    
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    		warnx("unknown argument: %s", argv[optind]); | 
    
    
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    		usage();  | 
    
    
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    	}  | 
    
    
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    	exit(errflg);  | 
    
    
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    }  |