Date: Thu, 3 Jul 2014 15:56:30 +0000 (UTC) From: Hajimu UMEMOTO <ume@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org Subject: svn commit: r268216 - stable/10/lib/libc/net Message-ID: <201407031556.s63FuUCr027909@svn.freebsd.org>
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Author: ume Date: Thu Jul 3 15:56:30 2014 New Revision: 268216 URL: http://svnweb.freebsd.org/changeset/base/268216 Log: MFC r267912, r267915: - Exclude loopback address rather than loopback interface. - style(9) Spotted by: melifaro Modified: stable/10/lib/libc/net/getaddrinfo.c Directory Properties: stable/10/ (props changed) Modified: stable/10/lib/libc/net/getaddrinfo.c ============================================================================== --- stable/10/lib/libc/net/getaddrinfo.c Thu Jul 3 13:51:10 2014 (r268215) +++ stable/10/lib/libc/net/getaddrinfo.c Thu Jul 3 15:56:30 2014 (r268216) @@ -1532,7 +1532,7 @@ find_afd(int af) } /* - * post-2553: AI_ADDRCONFIG check. Determines which address families are + * RFC 3493: AI_ADDRCONFIG check. Determines which address families are * configured on the local system and correlates with pai->ai_family value. * If an address family is not configured on the system, it will not be * queried for. For this purpose, loopback addresses are not considered @@ -1545,24 +1545,40 @@ static int addrconfig(struct addrinfo *pai) { struct ifaddrs *ifaddrs, *ifa; + struct sockaddr_in *sin; +#ifdef INET6 + struct sockaddr_in6 *sin6; +#endif int seen_inet = 0, seen_inet6 = 0; if (getifaddrs(&ifaddrs) != 0) - return 0; + return (0); for (ifa = ifaddrs; ifa != NULL; ifa = ifa->ifa_next) { if (ifa->ifa_addr == NULL || (ifa->ifa_flags & IFF_UP) == 0) continue; - if ((ifa->ifa_flags & IFT_LOOP) != 0) - continue; switch (ifa->ifa_addr->sa_family) { case AF_INET: + if (seen_inet) + continue; + sin = (struct sockaddr_in *)(ifa->ifa_addr); + if (IN_LOOPBACK(htonl(sin->sin_addr.s_addr))) + continue; seen_inet = 1; break; #ifdef INET6 case AF_INET6: - if (!seen_inet6 && !is_ifdisabled(ifa->ifa_name)) - seen_inet6 = 1; + if (seen_inet6) + continue; + sin6 = (struct sockaddr_in6 *)(ifa->ifa_addr); + if (IN6_IS_ADDR_LOOPBACK(&sin6->sin6_addr)) + continue; + if ((ifa->ifa_flags & IFT_LOOP) != 0 && + IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) + continue; + if (is_ifdisabled(ifa->ifa_name)) + continue; + seen_inet6 = 1; break; #endif } @@ -1571,16 +1587,16 @@ addrconfig(struct addrinfo *pai) switch(pai->ai_family) { case AF_INET6: - return seen_inet6; + return (seen_inet6); case AF_INET: - return seen_inet; + return (seen_inet); case AF_UNSPEC: if (seen_inet == seen_inet6) - return seen_inet; + return (seen_inet); pai->ai_family = seen_inet ? AF_INET : AF_INET6; - return 1; + return (1); } - return 1; + return (1); } #ifdef INET6 @@ -1591,12 +1607,12 @@ is_ifdisabled(char *name) int fd; if ((fd = _socket(AF_INET6, SOCK_DGRAM | SOCK_CLOEXEC, 0)) < 0) - return -1; + return (-1); memset(&nd, 0, sizeof(nd)); strlcpy(nd.ifname, name, sizeof(nd.ifname)); if (_ioctl(fd, SIOCGIFINFO_IN6, &nd) < 0) { _close(fd); - return -1; + return (-1); } _close(fd); return ((nd.ndi.flags & ND6_IFF_IFDISABLED) != 0);
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