diff options
Diffstat (limited to 'src/backend/utils/adt/acl.c')
| -rw-r--r-- | src/backend/utils/adt/acl.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/src/backend/utils/adt/acl.c b/src/backend/utils/adt/acl.c index 2efb6c94e11..0c26e44d820 100644 --- a/src/backend/utils/adt/acl.c +++ b/src/backend/utils/adt/acl.c @@ -16,6 +16,7 @@ #include <ctype.h> +#include "access/hash.h" #include "access/htup_details.h" #include "catalog/catalog.h" #include "catalog/namespace.h" @@ -717,6 +718,20 @@ hash_aclitem(PG_FUNCTION_ARGS) PG_RETURN_UINT32((uint32) (a->ai_privs + a->ai_grantee + a->ai_grantor)); } +/* + * 64-bit hash function for aclitem. + * + * Similar to hash_aclitem, but accepts a seed and returns a uint64 value. + */ +Datum +hash_aclitem_extended(PG_FUNCTION_ARGS) +{ + AclItem *a = PG_GETARG_ACLITEM_P(0); + uint64 seed = PG_GETARG_INT64(1); + uint32 sum = (uint32) (a->ai_privs + a->ai_grantee + a->ai_grantor); + + return (seed == 0) ? UInt64GetDatum(sum) : hash_uint32_extended(sum, seed); +} /* * acldefault() --- create an ACL describing default access permissions |