src/include/netdb.h, branch stable/9

MFC r292514:

2015-12-27T00:38:57Z

addrinfo.ai_family is an address family, not a protocol family. PR: 162434

MFC r292444, r292446:

2015-12-25T11:33:09Z

Add AI_V4MAPPED and AI_ALL support for getaddrinfo(3). PR: 198092

Add capability to use a db version of services. It is enabled by

2010-04-04T08:31:03Z

specifying `db' as source of service in /etc/nsswitch.conf. MFC after: 2 weeks

Remove the Berkeley clause 3's.

2010-02-16T19:39:50Z

Add a few $FreeBSD$

Hide numerous BSD extensions in the POSIX namespace.

2009-03-14T20:04:28Z

Fix gethostbyaddr() prototype to conform to IEEE Std 1003.1 on 64 bit

2006-05-21T11:27:28Z

arch. X-MFC after: never

Return EAI_OVERFLOW instead of EAI_MEMORY when the supplied buffer is

2006-05-21T11:22:31Z

too short. This conforms to RFC3493, POSIX and XPG6. Obtained from: NetBSD

Fix gethostbyaddr() prototype to conform to IEEE Std 1003.1:

2006-05-12T15:37:23Z

http://www.opengroup.org/onlinepubs/009695399/functions/gethostbyaddr.html gethostbyaddr_r() is changed as well. It breaks ABI backward compatibility on 64 bit arch. So, we fix it on 32 bit arch only for now. Reported by: Rostislav Krasny

- make reentrant version of netdb functions glibc style API, and

2006-04-15T16:20:27Z

expose them to outside of libc. - make netdb functions NSS friendly. Reviewed by: arch@ and current@ (no objection)

Update the resolver in libc to BIND9's one.

2006-03-21T16:11:11Z

Since, res_sendsigned(3) and the friends use MD5 functions, it is hard to include them without having MD5 functions in libc. So, res_sendsigned(3) is not merged into libc. Since, res_update(3) in BIND9 is not binary compatible with our res_update(3), res_update(3) is leaved as is, except some necessary modifications. The res_update(3) and the friends are not essential part of the resolver. They are not defined in resolv.h but defined in res_update.h separately in BIND9. Further, they are not called from our tree. So, I hide them from our resolv.h, but leave them only for binary backward compatibility (perhaps, no one calls them). Since, struct __res_state_ext is not exposed in BIND9, I hide it from our resolv.h. And, global variable _res_ext is removed. It breaks binary backward compatibility. But, since it is not used from outside of our libc, I think it is safe. Reviewed by: arch@ (no objection)