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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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42
src/backend/commands/tablespace.c
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@ -45,7 +45,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/commands/tablespace.c,v 1.6 2004/07/11 19:52:49 tgl Exp $
* $PostgreSQL: pgsql/src/backend/commands/tablespace.c,v 1.7 2004/08/01 20:30:48 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -757,7 +757,6 @@ AlterTableSpaceOwner(const char *name, AclId newOwnerSysId)
HeapScanDesc scandesc;
Form_pg_tablespace spcForm;
HeapTuple tup;
HeapTuple newtuple;
/* Search pg_tablespace */
rel = heap_openr(TableSpaceRelationName, RowExclusiveLock);
@ -773,8 +772,7 @@ AlterTableSpaceOwner(const char *name, AclId newOwnerSysId)
(errcode(ERRCODE_UNDEFINED_OBJECT),
errmsg("tablespace \"%s\" does not exist", name)));
newtuple = heap_copytuple(tup);
spcForm = (Form_pg_tablespace) GETSTRUCT(newtuple);
spcForm = (Form_pg_tablespace) GETSTRUCT(tup);
/*
* If the new owner is the same as the existing owner, consider the
@ -782,16 +780,48 @@ AlterTableSpaceOwner(const char *name, AclId newOwnerSysId)
*/
if (spcForm->spcowner != newOwnerSysId)
{
Datum repl_val[Natts_pg_tablespace];
char repl_null[Natts_pg_tablespace];
char repl_repl[Natts_pg_tablespace];
Acl *newAcl;
Datum aclDatum;
bool isNull;
HeapTuple newtuple;
/* Otherwise, must be superuser to change object ownership */
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("must be superuser to change owner")));
/* Modify the owner */
spcForm->spcowner = newOwnerSysId;
memset(repl_null, ' ', sizeof(repl_null));
memset(repl_repl, ' ', sizeof(repl_repl));
repl_repl[Anum_pg_tablespace_spcowner - 1] = 'r';
repl_val[Anum_pg_tablespace_spcowner - 1] = Int32GetDatum(newOwnerSysId);
/*
* Determine the modified ACL for the new owner. This is only
* necessary when the ACL is non-null.
*/
aclDatum = heap_getattr(tup,
Anum_pg_tablespace_spcacl,
RelationGetDescr(rel),
&isNull);
if (!isNull)
{
newAcl = aclnewowner(DatumGetAclP(aclDatum),
spcForm->spcowner, newOwnerSysId);
repl_repl[Anum_pg_tablespace_spcacl - 1] = 'r';
repl_val[Anum_pg_tablespace_spcacl - 1] = PointerGetDatum(newAcl);
}
newtuple = heap_modifytuple(tup, rel, repl_val, repl_null, repl_repl);
simple_heap_update(rel, &newtuple->t_self, newtuple);
CatalogUpdateIndexes(rel, newtuple);
heap_freetuple(newtuple);
}
heap_endscan(scandesc);