Small patch to move get_grosysid() from catalog/aclchk.c to

utils/cache/lsyscache.c where it can be used by other things.  Also
cleans up both get_usesysid() and get_grosysid() a bit. From Stephen
Frost.

src/backend/catalog/aclchk.c

@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/catalog/aclchk.c,v 1.109 2005/01/27 23:23:51 neilc Exp $
+ *	  $PostgreSQL: pgsql/src/backend/catalog/aclchk.c,v 1.110 2005/01/27 23:36:06 neilc Exp $
  *
  * NOTES
  *	  See acl.h.
@@ -1208,28 +1208,6 @@ privilege_to_string(AclMode privilege)
 	return NULL;				/* appease compiler */
 }
 
-
-AclId
-get_grosysid(char *groname)
-{
-	HeapTuple	tuple;
-	AclId		id = 0;
-
-	tuple = SearchSysCache(GRONAME,
-						   PointerGetDatum(groname),
-						   0, 0, 0);
-	if (HeapTupleIsValid(tuple))
-	{
-		id = ((Form_pg_group) GETSTRUCT(tuple))->grosysid;
-		ReleaseSysCache(tuple);
-	}
-	else
-		ereport(ERROR,
-				(errcode(ERRCODE_UNDEFINED_OBJECT),
-				 errmsg("group \"%s\" does not exist", groname)));
-	return id;
-}
-
 /*
  * Convert group ID to name, or return NULL if group can't be found
  */

src/backend/utils/cache/lsyscache.c

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1994, Regents of the University of California
  *
  * IDENTIFICATION
- *	  $PostgreSQL: pgsql/src/backend/utils/cache/lsyscache.c,v 1.119 2004/12/31 22:01:25 pgsql Exp $
+ *	  $PostgreSQL: pgsql/src/backend/utils/cache/lsyscache.c,v 1.120 2005/01/27 23:36:12 neilc Exp $
  *
  * NOTES
  *	  Eventually, the index information should go through here, too.
@@ -25,6 +25,7 @@
 #include "catalog/pg_operator.h"
 #include "catalog/pg_proc.h"
 #include "catalog/pg_shadow.h"
+#include "catalog/pg_group.h"
 #include "catalog/pg_statistic.h"
 #include "catalog/pg_type.h"
 #include "nodes/makefuncs.h"
@@ -2032,7 +2033,7 @@ get_namespace_name(Oid nspid)
 AclId
 get_usesysid(const char *username)
 {
-	int32		result;
+	AclId		userId;
 	HeapTuple	userTup;
 
 	userTup = SearchSysCache(SHADOWNAME,
@@ -2043,9 +2044,39 @@ get_usesysid(const char *username)
 				(errcode(ERRCODE_UNDEFINED_OBJECT),
 				 errmsg("user \"%s\" does not exist", username)));
 
-	result = ((Form_pg_shadow) GETSTRUCT(userTup))->usesysid;
+	userId = ((Form_pg_shadow) GETSTRUCT(userTup))->usesysid;
 
 	ReleaseSysCache(userTup);
 
-	return result;
+	return userId;
 }
+
+/*
+ * get_grosysid
+ *
+ *	  Given a group name, look up the group's sysid.
+ *	  Raises an error if no such group (rather than returning zero,
+ *	  which might possibly be a valid grosysid).
+ *
+ */
+AclId
+get_grosysid(char *groname)
+{
+	AclId		groupId;
+	HeapTuple	groupTup;
+
+	groupTup = SearchSysCache(GRONAME,
+						   PointerGetDatum(groname),
+						   0, 0, 0);
+	if (!HeapTupleIsValid(groupTup))
+		ereport(ERROR,
+				(errcode(ERRCODE_UNDEFINED_OBJECT),
+				 errmsg("group \"%s\" does not exist", groname)));
+
+	groupId = ((Form_pg_group) GETSTRUCT(groupTup))->grosysid;
+
+	ReleaseSysCache(groupTup);
+
+	return groupId;
+}
+

src/include/utils/acl.h

@@ -7,7 +7,7 @@
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/utils/acl.h,v 1.76 2004/12/31 22:03:45 pgsql Exp $
+ * $PostgreSQL: pgsql/src/include/utils/acl.h,v 1.77 2005/01/27 23:36:14 neilc Exp $
  *
  * NOTES
  *	  An ACL array is simply an array of AclItems, representing the union
@@ -245,7 +245,6 @@ extern Datum hash_aclitem(PG_FUNCTION_ARGS);
  * prototypes for functions in aclchk.c
  */
 extern void ExecuteGrantStmt(GrantStmt *stmt);
-extern AclId get_grosysid(char *groname);
 extern char *get_groname(AclId grosysid);
 
 extern AclMode pg_class_aclmask(Oid table_oid, AclId userid,

src/include/utils/lsyscache.h

@@ -6,7 +6,7 @@
  * Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
  * Portions Copyright (c) 1994, Regents of the University of California
  *
- * $PostgreSQL: pgsql/src/include/utils/lsyscache.h,v 1.93 2004/12/31 22:03:46 pgsql Exp $
+ * $PostgreSQL: pgsql/src/include/utils/lsyscache.h,v 1.94 2005/01/27 23:36:15 neilc Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -115,7 +115,8 @@ extern void free_attstatsslot(Oid atttype,
 				  Datum *values, int nvalues,
 				  float4 *numbers, int nnumbers);
 extern char *get_namespace_name(Oid nspid);
-extern int32 get_usesysid(const char *username);
+extern AclId get_usesysid(const char *username);
+extern AclId get_grosysid(char *groname);
 
 #define is_array_type(typid)  (get_element_type(typid) != InvalidOid)