database/postgres
1
0
Fork 0
mirror of https://github.com/postgres/postgres.git synced 2025-07-27 12:41:57 +03:00
Code Activity

sepgsql: Check CREATE permissions for some object types.

Browse Source 
KaiGai Kohei, reviewed by Dimitri Fontaine and me.
This commit is contained in:
Robert Haas
2011-12-21 09:12:43 -05:00
parent 7f0e4bb82e
commit e1042a3484
10 changed files with 606 additions and 83 deletions
Download Patch File Download Diff File Expand all files Collapse all files

50
contrib/sepgsql/schema.c
View File

@ -10,12 +10,18 @@
*/
#include "postgres.h"
#include "access/genam.h"
#include "access/heapam.h"
#include "access/sysattr.h"
#include "catalog/dependency.h"
#include "catalog/indexing.h"
#include "catalog/pg_database.h"
#include "catalog/pg_namespace.h"
#include "commands/seclabel.h"
#include "miscadmin.h"
#include "utils/fmgroids.h"
#include "utils/lsyscache.h"
#include "utils/tqual.h"
#include "sepgsql.h"
@ -28,19 +34,55 @@
void
sepgsql_schema_post_create(Oid namespaceId)
{
char *scontext;
Relation rel;
ScanKeyData skey;
SysScanDesc sscan;
HeapTuple tuple;
char *tcontext;
char *ncontext;
ObjectAddress object;
char audit_name[NAMEDATALEN + 20];
ObjectAddress object;
Form_pg_namespace nspForm;
/*
* Compute a default security label when we create a new schema object
* under the working database.
*
* XXX - uncoming version of libselinux supports to take object
* name to handle special treatment on default security label;
* such as special label on "pg_temp" schema.
*/
scontext = sepgsql_get_client_label();
rel = heap_open(NamespaceRelationId, AccessShareLock);
ScanKeyInit(&skey,
ObjectIdAttributeNumber,
BTEqualStrategyNumber, F_OIDEQ,
ObjectIdGetDatum(namespaceId));
sscan = systable_beginscan(rel, NamespaceOidIndexId, true,
SnapshotSelf, 1, &skey);
tuple = systable_getnext(sscan);
if (!HeapTupleIsValid(tuple))
elog(ERROR, "catalog lookup failed for namespace %u", namespaceId);
nspForm = (Form_pg_namespace) GETSTRUCT(tuple);
tcontext = sepgsql_get_label(DatabaseRelationId, MyDatabaseId, 0);
ncontext = sepgsql_compute_create(scontext, tcontext,
ncontext = sepgsql_compute_create(sepgsql_get_client_label(),
tcontext,
SEPG_CLASS_DB_SCHEMA);
/*
* check db_schema:{create}
*/
snprintf(audit_name, sizeof(audit_name),
"schema %s", NameStr(nspForm->nspname));
sepgsql_avc_check_perms_label(ncontext,
SEPG_CLASS_DB_SCHEMA,
SEPG_DB_SCHEMA__CREATE,
audit_name,
true);
systable_endscan(sscan);
heap_close(rel, AccessShareLock);
/*
* Assign the default security label on a new procedure