GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: lib/libc/net/rresvport.c Lines: 0 31 0.0 %
Date: 2017-11-13 Branches: 0 13 0.0 %

Line Branch Exec Source
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/* $OpenBSD: rresvport.c,v 1.11 2015/09/12 14:56:50 guenther Exp $ */
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/*
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 * Copyright (c) 1995, 1996, 1998 Theo de Raadt.  All rights reserved.
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 * Copyright (c) 1983, 1993, 1994
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 *	The Regents of the University of California.  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. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``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 THE REGENTS OR CONTRIBUTORS 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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#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 <arpa/inet.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <netdb.h>
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#include <unistd.h>
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#include <pwd.h>
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#include <errno.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <string.h>
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#include <syslog.h>
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#include <stdlib.h>
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#include <netgroup.h>
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int
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rresvport(int *alport)
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{
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	return rresvport_af(alport, AF_INET);
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}
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int
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rresvport_af(int *alport, int af)
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{
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	struct sockaddr_storage ss;
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	struct sockaddr *sa;
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	u_int16_t *portp;
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	int s;
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	bzero(&ss, sizeof ss);
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	sa = (struct sockaddr *)&ss;
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	switch (af) {
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	case AF_INET:
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		sa->sa_len = sizeof(struct sockaddr_in);
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		portp = &((struct sockaddr_in *)sa)->sin_port;
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		break;
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	case AF_INET6:
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		sa->sa_len = sizeof(struct sockaddr_in6);
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		portp = &((struct sockaddr_in6 *)sa)->sin6_port;
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		break;
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	default:
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		errno = EPFNOSUPPORT;
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		return (-1);
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	}
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	sa->sa_family = af;
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	s = socket(af, SOCK_STREAM, 0);
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	if (s < 0)
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		return (-1);
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	*portp = htons(*alport);
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	if (*alport < IPPORT_RESERVED - 1) {
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		if (bind(s, sa, sa->sa_len) >= 0)
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			return (s);
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		if (errno != EADDRINUSE) {
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			(void)close(s);
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			return (-1);
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		}
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	}
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	*portp = 0;
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	sa->sa_family = af;
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	if (bindresvport_sa(s, sa) == -1) {
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		(void)close(s);
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		return (-1);
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	}
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	*alport = ntohs(*portp);
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	return (s);
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}
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DEF_WEAK(rresvport_af);