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Remove configure probe for sockaddr_in6 and require AF_INET6.

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SUSv3 <netinet/in.h> defines struct sockaddr_in6, and all targeted Unix
systems have it.  Windows has it in <ws2ipdef.h>.  Remove the configure
probe, the macro and a small amount of dead code.

Also remove a mention of IPv6-less builds from the documentation, since
there aren't any.

This is similar to commits f5580882 and 077bf2f2 for Unix sockets.  Even
though AF_INET6 is an "optional" component of SUSv3, there are no known
modern operating system without it, and it seems even less likely to be
omitted from future systems than AF_UNIX.

Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/CA+hUKGKErNfhmvb_H0UprEmp4LPzGN06yR2_0tYikjzB-2ECMw@mail.gmail.com
This commit is contained in:
Thomas Munro
2022-08-26 10:13:22 +12:00
parent 28ec316787
commit bcc8b14ef6
16 changed files with 7 additions and 105 deletions
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11
src/backend/utils/adt/pgstatfuncs.c
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@ -735,11 +735,8 @@ pg_stat_get_activity(PG_FUNCTION_ARGS)
}
else
{
if (beentry->st_clientaddr.addr.ss_family == AF_INET
#ifdef HAVE_IPV6
|| beentry->st_clientaddr.addr.ss_family == AF_INET6
#endif
)
if (beentry->st_clientaddr.addr.ss_family == AF_INET ||
beentry->st_clientaddr.addr.ss_family == AF_INET6)
{
char remote_host[NI_MAXHOST];
char remote_port[NI_MAXSERV];
@ -1105,9 +1102,7 @@ pg_stat_get_backend_client_addr(PG_FUNCTION_ARGS)
switch (beentry->st_clientaddr.addr.ss_family)
{
case AF_INET:
#ifdef HAVE_IPV6
case AF_INET6:
#endif
break;
default:
PG_RETURN_NULL();
@ -1152,9 +1147,7 @@ pg_stat_get_backend_client_port(PG_FUNCTION_ARGS)
switch (beentry->st_clientaddr.addr.ss_family)
{
case AF_INET:
#ifdef HAVE_IPV6
case AF_INET6:
#endif
break;
case AF_UNIX:
PG_RETURN_INT32(-1);