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First batch of object rename commands.

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This commit is contained in:
Peter Eisentraut
2003-06-27 14:45:32 +00:00
parent 5bac7d11dd
commit b256f24264
60 changed files with 2018 additions and 442 deletions
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108
src/backend/commands/user.c
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@@ -6,7 +6,7 @@
* Portions Copyright (c) 1996-2002, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $Header: /cvsroot/pgsql/src/backend/commands/user.c,v 1.117 2003/05/12 23:08:50 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/user.c,v 1.118 2003/06/27 14:45:27 petere Exp $
*
*-------------------------------------------------------------------------
*/
@@ -1091,6 +1091,64 @@ DropUser(DropUserStmt *stmt)
}
/*
* Rename user
*/
void
RenameUser(const char *oldname, const char *newname)
{
HeapTuple tup;
Relation rel;
/* ExclusiveLock because we need to update the password file */
rel = heap_openr(ShadowRelationName, ExclusiveLock);
tup = SearchSysCacheCopy(SHADOWNAME,
CStringGetDatum(oldname),
0, 0, 0);
if (!HeapTupleIsValid(tup))
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR_OR_ACCESS_RULE_VIOLATION),
errmsg("user \"%s\" does not exist", oldname)));
/*
* XXX Client applications probably store the session user
* somewhere, so renaming it could cause confusion. On the other
* hand, there may not be an actual problem besides a little
* confusion, so think about this and decide.
*/
if (((Form_pg_shadow) GETSTRUCT(tup))->usesysid == GetSessionUserId())
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR_OR_ACCESS_RULE_VIOLATION),
errmsg("session user may not be renamed")));
/* make sure the new name doesn't exist */
if (SearchSysCacheExists(SHADOWNAME,
CStringGetDatum(newname),
0, 0, 0))
{
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR_OR_ACCESS_RULE_VIOLATION),
errmsg("user \"%s\" already exists", newname)));
}
/* must be superuser */
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR_OR_ACCESS_RULE_VIOLATION),
errmsg("permission denied")));
/* rename */
namestrcpy(&(((Form_pg_shadow) GETSTRUCT(tup))->usename), newname);
simple_heap_update(rel, &tup->t_self, tup);
CatalogUpdateIndexes(rel, tup);
heap_close(rel, NoLock);
heap_freetuple(tup);
user_file_update_needed = true;
}
/*
* CheckPgUserAclNotNull
@@ -1566,3 +1624,51 @@ DropGroup(DropGroupStmt *stmt)
*/
group_file_update_needed = true;
}
/*
* Rename group
*/
void
RenameGroup(const char *oldname, const char *newname)
{
HeapTuple tup;
Relation rel;
/* ExclusiveLock because we need to update the flat group file */
rel = heap_openr(GroupRelationName, ExclusiveLock);
tup = SearchSysCacheCopy(GRONAME,
CStringGetDatum(oldname),
0, 0, 0);
if (!HeapTupleIsValid(tup))
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR_OR_ACCESS_RULE_VIOLATION),
errmsg("group \"%s\" does not exist", oldname)));
/* make sure the new name doesn't exist */
if (SearchSysCacheExists(GRONAME,
CStringGetDatum(newname),
0, 0, 0))
{
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR_OR_ACCESS_RULE_VIOLATION),
errmsg("a group \"%s\" already exists", newname)));
}
/* must be superuser */
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_SYNTAX_ERROR_OR_ACCESS_RULE_VIOLATION),
errmsg("permission denied")));
/* rename */
namestrcpy(&(((Form_pg_group) GETSTRUCT(tup))->groname), newname);
simple_heap_update(rel, &tup->t_self, tup);
CatalogUpdateIndexes(rel, tup);
heap_close(rel, NoLock);
heap_freetuple(tup);
group_file_update_needed = true;
}