diff options
Diffstat (limited to 'src/include/catalog/pg_database.h')
| -rw-r--r-- | src/include/catalog/pg_database.h | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/src/include/catalog/pg_database.h b/src/include/catalog/pg_database.h index 611c95656a9..48dec14acc3 100644 --- a/src/include/catalog/pg_database.h +++ b/src/include/catalog/pg_database.h @@ -49,7 +49,10 @@ CATALOG(pg_database,1262,DatabaseRelationId) BKI_SHARED_RELATION BKI_ROWTYPE_OID /* new connections allowed? */ bool datallowconn; - /* max connections allowed (-1=no limit) */ + /* + * Max connections allowed. Negative values have special meaning, see + * DATCONNLIMIT_* defines below. + */ int32 datconnlimit; /* all Xids < this are frozen in this DB */ @@ -100,4 +103,19 @@ DECLARE_UNIQUE_INDEX_PKEY(pg_database_oid_index, 2672, DatabaseOidIndexId, on pg DECLARE_OID_DEFINING_MACRO(Template0DbOid, 4); DECLARE_OID_DEFINING_MACRO(PostgresDbOid, 5); +/* + * Special values for pg_database.datconnlimit. Normal values are >= 0. + */ +#define DATCONNLIMIT_UNLIMITED -1 /* no limit */ + +/* + * A database is set to invalid partway through being dropped. Using + * datconnlimit=-2 for this purpose isn't particularly clean, but is + * backpatchable. + */ +#define DATCONNLIMIT_INVALID_DB -2 + +extern bool database_is_invalid_form(Form_pg_database datform); +extern bool database_is_invalid_oid(Oid dboid); + #endif /* PG_DATABASE_H */ |