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    /*	$OpenBSD: config.c,v 1.28 2015/10/12 06:50:08 reyk Exp $ */  | 
    
    
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    /*  | 
    
    
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     * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>  | 
    
    
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     *  | 
    
    
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     * Permission to use, copy, modify, and distribute this software for any  | 
    
    
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     * purpose with or without fee is hereby granted, provided that the above  | 
    
    
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     * copyright notice and this permission notice appear in all copies.  | 
    
    
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     *  | 
    
    
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     * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES  | 
    
    
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     * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF  | 
    
    
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     * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR  | 
    
    
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     * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES  | 
    
    
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     * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN  | 
    
    
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     * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF  | 
    
    
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     * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.  | 
    
    
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     */  | 
    
    
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    #include <sys/types.h>  | 
    
    
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    #include <sys/socket.h>  | 
    
    
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    #include <sys/stat.h>  | 
    
    
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    #include <netinet/in.h>  | 
    
    
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    #include <errno.h>  | 
    
    
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    #include <stdlib.h>  | 
    
    
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    #include <string.h>  | 
    
    
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    #include <unistd.h>  | 
    
    
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    #include "ntpd.h"  | 
    
    
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    struct ntp_addr	*host_v4(const char *);  | 
    
    
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    struct ntp_addr	*host_v6(const char *);  | 
    
    
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    static u_int32_t		 maxid = 0;  | 
    
    
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    static u_int32_t		 constraint_maxid = 0;  | 
    
    
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    void  | 
    
    
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    host(const char *s, struct ntp_addr **hn)  | 
    
    
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    { | 
    
    
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    	struct ntp_addr	*h = NULL;  | 
    
    
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    	if (!strcmp(s, "*"))  | 
    
    
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    		if ((h = calloc(1, sizeof(struct ntp_addr))) == NULL)  | 
    
    
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    			fatal(NULL);  | 
    
    
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    	/* IPv4 address? */  | 
    
    
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    	if (h == NULL)  | 
    
    
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    		h = host_v4(s);  | 
    
    
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    	/* IPv6 address? */  | 
    
    
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    	if (h == NULL)  | 
    
    
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    		h = host_v6(s);  | 
    
    
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    	if (h == NULL)  | 
    
    
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    		return;  | 
    
    
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    	*hn = h;  | 
    
    
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    }  | 
    
    
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    struct ntp_addr	*  | 
    
    
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    host_v4(const char *s)  | 
    
    
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    { | 
    
    
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    	struct in_addr		 ina;  | 
    
    
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    	struct sockaddr_in	*sa_in;  | 
    
    
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    	struct ntp_addr		*h;  | 
    
    
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    	memset(&ina, 0, sizeof(struct in_addr));  | 
    
    
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    	if (inet_pton(AF_INET, s, &ina) != 1)  | 
    
    
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    		return (NULL);  | 
    
    
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    	if ((h = calloc(1, sizeof(struct ntp_addr))) == NULL)  | 
    
    
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    		fatal(NULL);  | 
    
    
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    	sa_in = (struct sockaddr_in *)&h->ss;  | 
    
    
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    	sa_in->sin_len = sizeof(struct sockaddr_in);  | 
    
    
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    	sa_in->sin_family = AF_INET;  | 
    
    
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    	sa_in->sin_addr.s_addr = ina.s_addr;  | 
    
    
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    	return (h);  | 
    
    
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    }  | 
    
    
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    struct ntp_addr	*  | 
    
    
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    host_v6(const char *s)  | 
    
    
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    { | 
    
    
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    	struct addrinfo		 hints, *res;  | 
    
    
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    	struct sockaddr_in6	*sa_in6;  | 
    
    
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    	struct ntp_addr		*h = NULL;  | 
    
    
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    	memset(&hints, 0, sizeof(hints));  | 
    
    
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    	hints.ai_family = AF_INET6;  | 
    
    
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    	hints.ai_socktype = SOCK_DGRAM; /*dummy*/  | 
    
    
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    	hints.ai_flags = AI_NUMERICHOST;  | 
    
    
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    	if (getaddrinfo(s, "0", &hints, &res) == 0) { | 
    
    
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    		if ((h = calloc(1, sizeof(struct ntp_addr))) == NULL)  | 
    
    
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    			fatal(NULL);  | 
    
    
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    		sa_in6 = (struct sockaddr_in6 *)&h->ss;  | 
    
    
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    		sa_in6->sin6_len = sizeof(struct sockaddr_in6);  | 
    
    
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    		sa_in6->sin6_family = AF_INET6;  | 
    
    
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    		memcpy(&sa_in6->sin6_addr,  | 
    
    
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    		    &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,  | 
    
    
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    		    sizeof(sa_in6->sin6_addr));  | 
    
    
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    		sa_in6->sin6_scope_id =  | 
    
    
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    		    ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;  | 
    
    
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    		freeaddrinfo(res);  | 
    
    
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    	}  | 
    
    
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    	return (h);  | 
    
    
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    }  | 
    
    
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    void  | 
    
    
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    host_dns_free(struct ntp_addr *hn)  | 
    
    
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    { | 
    
    
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    	struct ntp_addr	*h = hn, *tmp;  | 
    
    
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    	while (h) { | 
    
    
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    		tmp = h;  | 
    
    
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    		h = h->next;  | 
    
    
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    		free(tmp);  | 
    
    
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    	}  | 
    
    
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    }  | 
    
    
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    int  | 
    
    
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    host_dns(const char *s, struct ntp_addr **hn)  | 
    
    
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    { | 
    
    
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    	struct addrinfo		 hints, *res0, *res;  | 
    
    
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    	int			 error, cnt = 0;  | 
    
    
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    	struct sockaddr_in	*sa_in;  | 
    
    
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    	struct sockaddr_in6	*sa_in6;  | 
    
    
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    	struct ntp_addr		*h, *hh = NULL;  | 
    
    
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    	memset(&hints, 0, sizeof(hints));  | 
    
    
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    	hints.ai_family = PF_UNSPEC;  | 
    
    
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    	hints.ai_socktype = SOCK_DGRAM; /* DUMMY */  | 
    
    
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    	/* ntpd MUST NOT use AI_ADDRCONFIG here */  | 
    
    
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    	error = getaddrinfo(s, NULL, &hints, &res0);  | 
    
    
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    	if (error == EAI_AGAIN || error == EAI_NODATA || error == EAI_NONAME)  | 
    
    
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    			return (0);  | 
    
    
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    	if (error) { | 
    
    
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    		log_warnx("could not parse \"%s\": %s", s, | 
    
    
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    		    gai_strerror(error));  | 
    
    
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    		return (-1);  | 
    
    
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    	}  | 
    
    
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    	for (res = res0; res && cnt < MAX_SERVERS_DNS; res = res->ai_next) { | 
    
    
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    		if (res->ai_family != AF_INET &&  | 
    
    
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    		    res->ai_family != AF_INET6)  | 
    
    
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    			continue;  | 
    
    
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    		if ((h = calloc(1, sizeof(struct ntp_addr))) == NULL)  | 
    
    
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    			fatal(NULL);  | 
    
    
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    		h->ss.ss_family = res->ai_family;  | 
    
    
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    		if (res->ai_family == AF_INET) { | 
    
    
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    			sa_in = (struct sockaddr_in *)&h->ss;  | 
    
    
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    			sa_in->sin_len = sizeof(struct sockaddr_in);  | 
    
    
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    			sa_in->sin_addr.s_addr = ((struct sockaddr_in *)  | 
    
    
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    			    res->ai_addr)->sin_addr.s_addr;  | 
    
    
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    		} else { | 
    
    
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    			sa_in6 = (struct sockaddr_in6 *)&h->ss;  | 
    
    
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    			sa_in6->sin6_len = sizeof(struct sockaddr_in6);  | 
    
    
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    			memcpy(&sa_in6->sin6_addr, &((struct sockaddr_in6 *)  | 
    
    
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    			    res->ai_addr)->sin6_addr, sizeof(struct in6_addr));  | 
    
    
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    		}  | 
    
    
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    		h->next = hh;  | 
    
    
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    		hh = h;  | 
    
    
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    		cnt++;  | 
    
    
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    	}  | 
    
    
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    	freeaddrinfo(res0);  | 
    
    
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    	*hn = hh;  | 
    
    
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    	return (cnt);  | 
    
    
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    }  | 
    
    
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    struct ntp_peer *  | 
    
    
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    new_peer(void)  | 
    
    
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    { | 
    
    
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    	struct ntp_peer	*p;  | 
    
    
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    	if ((p = calloc(1, sizeof(struct ntp_peer))) == NULL)  | 
    
    
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    		fatal("new_peer calloc"); | 
    
    
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    	p->id = ++maxid;  | 
    
    
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    	return (p);  | 
    
    
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    }  | 
    
    
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    struct ntp_conf_sensor *  | 
    
    
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    new_sensor(char *device)  | 
    
    
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    { | 
    
    
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    	struct ntp_conf_sensor	*s;  | 
    
    
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    	if ((s = calloc(1, sizeof(struct ntp_conf_sensor))) == NULL)  | 
    
    
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    		fatal("new_sensor calloc"); | 
    
    
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    	if ((s->device = strdup(device)) == NULL)  | 
    
    
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    		fatal("new_sensor strdup"); | 
    
    
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    	return (s);  | 
    
    
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    }  | 
    
    
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    struct constraint *  | 
    
    
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    new_constraint(void)  | 
    
    
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    { | 
    
    
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    	struct constraint	*p;  | 
    
    
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    	if ((p = calloc(1, sizeof(struct constraint))) == NULL)  | 
    
    
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    		fatal("new_constraint calloc"); | 
    
    
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    	p->id = ++constraint_maxid;  | 
    
    
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    	p->fd = -1;  | 
    
    
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    	return (p);  | 
    
    
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    }  | 
    
    
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