From 6c1d86dcdb30f52d7f64179b982b253f1ba6951c Mon Sep 17 00:00:00 2001 From: Ricard Wanderlof Date: Fri, 27 Jun 2008 09:08:44 +0000 Subject: Added support for the AI_ADDRCONFIG flag in the hints->ai_flags parameter to getaddrinfo(3). --- libc/inet/check_pf.c | 65 ++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) create mode 100644 libc/inet/check_pf.c (limited to 'libc/inet/check_pf.c') diff --git a/libc/inet/check_pf.c b/libc/inet/check_pf.c new file mode 100644 index 000000000..b6c93783a --- /dev/null +++ b/libc/inet/check_pf.c @@ -0,0 +1,65 @@ +/* Determine protocol families for which interfaces exist. Generic version. + Copyright (C) 2003, 2006 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#include +#include +#include + + +void +attribute_hidden +__check_pf (bool *seen_ipv4, bool *seen_ipv6) +{ + *seen_ipv4 = false; + *seen_ipv6 = false; +#if __UCLIBC_SUPPORT_AI_ADDRCONFIG__ + { + /* Get the interface list via getifaddrs. */ + struct ifaddrs *ifa = NULL; + struct ifaddrs *runp; + if (getifaddrs (&ifa) != 0) + { + /* We cannot determine what interfaces are available. Be + optimistic. */ + *seen_ipv4 = true; +#if __UCLIBC_HAS_IPV6__ + *seen_ipv6 = true; +#endif /* __UCLIBC_HAS_IPV6__ */ + return; + } + + for (runp = ifa; runp != NULL; runp = runp->ifa_next) + if (runp->ifa_addr->sa_family == PF_INET) + *seen_ipv4 = true; +#if __UCLIBC_HAS_IPV6__ + else if (runp->ifa_addr->sa_family == PF_INET6) + *seen_ipv6 = true; +#endif /* __UCLIBC_HAS_IPV6__ */ + + (void) freeifaddrs (ifa); + } +#else + /* AI_ADDRCONFIG is disabled, assume both ipv4 and ipv6 available. */ + *seen_ipv4 = true; +#if __UCLIBC_HAS_IPV6__ + *seen_ipv6 = true; +#endif /* __UCLIBC_HAS_IPV6__ */ + +#endif /* __UCLIBC_SUPPORT_AI_ADDRCONFIG__ */ +} -- cgit v1.2.3