diff options
Diffstat (limited to 'src/backend/utils/cache/lsyscache.c')
| -rw-r--r-- | src/backend/utils/cache/lsyscache.c | 38 |
1 files changed, 36 insertions, 2 deletions
diff --git a/src/backend/utils/cache/lsyscache.c b/src/backend/utils/cache/lsyscache.c index 573c21afd8d..587213d48f8 100644 --- a/src/backend/utils/cache/lsyscache.c +++ b/src/backend/utils/cache/lsyscache.c @@ -7,7 +7,7 @@ * Portions Copyright (c) 1994, Regents of the University of California * * IDENTIFICATION - * $Header: /cvsroot/pgsql/src/backend/utils/cache/lsyscache.c,v 1.55 2001/05/09 23:13:35 tgl Exp $ + * $Header: /cvsroot/pgsql/src/backend/utils/cache/lsyscache.c,v 1.56 2001/06/14 01:09:22 tgl Exp $ * * NOTES * Eventually, the index information should go through here, too. @@ -18,6 +18,7 @@ #include "access/tupmacs.h" #include "catalog/pg_operator.h" #include "catalog/pg_proc.h" +#include "catalog/pg_shadow.h" #include "catalog/pg_statistic.h" #include "catalog/pg_type.h" #include "utils/array.h" @@ -25,6 +26,7 @@ #include "utils/lsyscache.h" #include "utils/syscache.h" + /* ---------- AMOP CACHES ---------- */ /* @@ -537,7 +539,7 @@ get_relnatts(Oid relid) * * Returns the name of a given relation. * - * Note: returns a palloc'd copy of the string, or NULL if no such operator. + * Note: returns a palloc'd copy of the string, or NULL if no such relation. */ char * get_rel_name(Oid relid) @@ -1039,3 +1041,35 @@ free_attstatsslot(Oid atttype, if (numbers) pfree(numbers); } + +/* ---------- PG_SHADOW CACHE ---------- */ + +/* + * get_usesysid + * + * Given a user name, look up the user's sysid. + * Raises an error if no such user (rather than returning zero, + * which might possibly be a valid usesysid). + * + * Note: the type of usesysid is currently int4, but may change to Oid + * someday. It'd be reasonable to return zero on failure if we were + * using Oid ... + */ +int32 +get_usesysid(const char *username) +{ + int32 result; + HeapTuple userTup; + + userTup = SearchSysCache(SHADOWNAME, + PointerGetDatum(username), + 0, 0, 0); + if (!HeapTupleIsValid(userTup)) + elog(ERROR, "user \"%s\" does not exist", username); + + result = ((Form_pg_shadow) GETSTRUCT(userTup))->usesysid; + + ReleaseSysCache(userTup); + + return result; +} |