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Cause ALTER OWNER commands to update the object's ACL, replacing references

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to the old owner with the new owner.  This is not necessarily right, but
it's sure a lot more likely to be what the user wants than doing nothing.
Christopher Kings-Lynne, some rework by Tom Lane.
This commit is contained in:
Tom Lane
2004-08-01 20:30:49 +00:00
parent 35ff782d71
commit d6f8a76cf2
7 changed files with 295 additions and 47 deletions
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43
src/backend/commands/dbcommands.c
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@ -9,7 +9,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/dbcommands.c,v 1.138 2004/08/01 06:19:22 momjian Exp $
* $PostgreSQL: pgsql/src/backend/commands/dbcommands.c,v 1.139 2004/08/01 20:30:48 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -768,8 +768,7 @@ AlterDatabaseSet(AlterDatabaseSetStmt *stmt)
void
AlterDatabaseOwner(const char *dbname, AclId newOwnerSysId)
{
HeapTuple tuple,
newtuple;
HeapTuple tuple;
Relation rel;
ScanKeyData scankey;
SysScanDesc scan;
@ -788,8 +787,7 @@ AlterDatabaseOwner(const char *dbname, AclId newOwnerSysId)
(errcode(ERRCODE_UNDEFINED_DATABASE),
errmsg("database \"%s\" does not exist", dbname)));
newtuple = heap_copytuple(tuple);
datForm = (Form_pg_database) GETSTRUCT(newtuple);
datForm = (Form_pg_database) GETSTRUCT(tuple);
/*
* If the new owner is the same as the existing owner, consider the
@ -797,6 +795,14 @@ AlterDatabaseOwner(const char *dbname, AclId newOwnerSysId)
*/
if (datForm->datdba != newOwnerSysId)
{
Datum repl_val[Natts_pg_database];
char repl_null[Natts_pg_database];
char repl_repl[Natts_pg_database];
Acl *newAcl;
Datum aclDatum;
bool isNull;
HeapTuple newtuple;
/* changing owner's database for someone else: must be superuser */
/* note that the someone else need not have any permissions */
if (!superuser())
@ -804,10 +810,33 @@ AlterDatabaseOwner(const char *dbname, AclId newOwnerSysId)
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("must be superuser to change owner")));
/* change owner */
datForm->datdba = newOwnerSysId;
memset(repl_null, ' ', sizeof(repl_null));
memset(repl_repl, ' ', sizeof(repl_repl));
repl_repl[Anum_pg_database_datdba - 1] = 'r';
repl_val[Anum_pg_database_datdba - 1] = Int32GetDatum(newOwnerSysId);
/*
* Determine the modified ACL for the new owner. This is only
* necessary when the ACL is non-null.
*/
aclDatum = heap_getattr(tuple,
Anum_pg_database_datacl,
RelationGetDescr(rel),
&isNull);
if (!isNull)
{
newAcl = aclnewowner(DatumGetAclP(aclDatum),
datForm->datdba, newOwnerSysId);
repl_repl[Anum_pg_database_datacl - 1] = 'r';
repl_val[Anum_pg_database_datacl - 1] = PointerGetDatum(newAcl);
}
newtuple = heap_modifytuple(tuple, rel, repl_val, repl_null, repl_repl);
simple_heap_update(rel, &newtuple->t_self, newtuple);
CatalogUpdateIndexes(rel, newtuple);
heap_freetuple(newtuple);
}
systable_endscan(scan);