diff options
Diffstat (limited to 'src/backend/utils/adt/network.c')
| -rw-r--r-- | src/backend/utils/adt/network.c | 30 |
1 files changed, 29 insertions, 1 deletions
diff --git a/src/backend/utils/adt/network.c b/src/backend/utils/adt/network.c index 126883a7696..5859e08fbaa 100644 --- a/src/backend/utils/adt/network.c +++ b/src/backend/utils/adt/network.c @@ -3,7 +3,7 @@ * is for IP V4 CIDR notation, but prepared for V6: just * add the necessary bits where the comments indicate. * - * $Header: /cvsroot/pgsql/src/backend/utils/adt/network.c,v 1.31 2001/06/13 21:08:59 momjian Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/adt/network.c,v 1.32 2001/06/17 02:05:20 tgl Exp $ * * Jon Postel RIP 16 Oct 1998 */ @@ -707,3 +707,31 @@ v4addressOK(unsigned long a1, int bits) return true; return false; } + + +/* + * These functions are used by planner to generate indexscan limits + * for clauses a << b and a <<= b + */ + +/* return the minimal value for an IP on a given network */ +Datum +network_scan_first(Datum in) +{ + return DirectFunctionCall1(network_network, in); +} + +/* + * return "last" IP on a given network. It's the broadcast address, + * however, masklen has to be set to 32, since + * 192.168.0.255/24 is considered less than 192.168.0.255/32 + * + * NB: this is not IPv6 ready ... + */ +Datum +network_scan_last(Datum in) +{ + return DirectFunctionCall2(inet_set_masklen, + DirectFunctionCall1(network_broadcast, in), + Int32GetDatum(32)); +} |