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Patch to LOCK multiple tables in one LOCK command.

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Neil Padgett
This commit is contained in:
Bruce Momjian
2001-08-10 14:30:15 +00:00
parent 49eb4f47c7
commit 77a69a2ed1
7 changed files with 53 additions and 34 deletions
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49
src/backend/commands/command.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/command.c,v 1.138 2001/08/04 22:01:38 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/commands/Attic/command.c,v 1.139 2001/08/10 14:30:14 momjian Exp $
*
* NOTES
* The PerformAddAttribute() code, like most of the relation
@@ -1984,8 +1984,7 @@ needs_toast_table(Relation rel)
MAXALIGN(data_length);
return (tuple_length > TOAST_TUPLE_THRESHOLD);
}
/*
*
* LOCK TABLE
@@ -1994,26 +1993,38 @@ needs_toast_table(Relation rel)
void
LockTableCommand(LockStmt *lockstmt)
{
Relation rel;
int aclresult;
List *p;
Relation rel;
/* Iterate over the list and open, lock, and close the relations
one at a time
*/
rel = heap_openr(lockstmt->relname, NoLock);
foreach(p, lockstmt->rellist)
{
char* relname = strVal(lfirst(p));
int aclresult;
rel = heap_openr(relname, NoLock);
if (rel->rd_rel->relkind != RELKIND_RELATION)
elog(ERROR, "LOCK TABLE: %s is not a table", lockstmt->relname);
if (rel->rd_rel->relkind != RELKIND_RELATION)
elog(ERROR, "LOCK TABLE: %s is not a table",
relname);
if (lockstmt->mode == AccessShareLock)
aclresult = pg_aclcheck(relname, GetUserId(),
ACL_SELECT);
else
aclresult = pg_aclcheck(relname, GetUserId(),
ACL_UPDATE | ACL_DELETE);
if (lockstmt->mode == AccessShareLock)
aclresult = pg_aclcheck(lockstmt->relname, GetUserId(), ACL_SELECT);
else
aclresult = pg_aclcheck(lockstmt->relname, GetUserId(),
ACL_UPDATE | ACL_DELETE);
if (aclresult != ACLCHECK_OK)
elog(ERROR, "LOCK TABLE: permission denied");
if (aclresult != ACLCHECK_OK)
elog(ERROR, "LOCK TABLE: permission denied");
LockRelation(rel, lockstmt->mode);
heap_close(rel, NoLock); /* close rel, keep lock */
LockRelation(rel, lockstmt->mode);
heap_close(rel, NoLock); /* close rel, keep lock */
}
}