diff options
author | Ricard Wanderlof <ricard.wanderlof@axis.com> | 2008-06-27 09:08:44 +0000 |
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committer | Ricard Wanderlof <ricard.wanderlof@axis.com> | 2008-06-27 09:08:44 +0000 |
commit | 6c1d86dcdb30f52d7f64179b982b253f1ba6951c (patch) | |
tree | 3886a2a7d4adb43be8ce07188790e27b6c50c22b /libc/inet/check_pf.c | |
parent | 516a518c9dfdbdc3c930626f8eeef3d0b4d71236 (diff) |
Added support for the AI_ADDRCONFIG flag in the hints->ai_flags parameter to getaddrinfo(3).
Diffstat (limited to 'libc/inet/check_pf.c')
-rw-r--r-- | libc/inet/check_pf.c | 65 |
1 files changed, 65 insertions, 0 deletions
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 <features.h> +#include <ifaddrs.h> +#include <netdb.h> + + +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__ */ +} |