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100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
/* -------------------------------------------------------------------------
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*
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* contrib/sepgsql/schema.c
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*
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* Routines corresponding to schema objects
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*
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* Copyright (c) 2010-2011, PostgreSQL Global Development Group
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*
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* -------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include "catalog/dependency.h"
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#include "catalog/pg_namespace.h"
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#include "commands/seclabel.h"
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#include "utils/lsyscache.h"
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#include "sepgsql.h"
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/*
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* sepgsql_schema_post_create
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*
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* This routine assigns a default security label on a newly defined
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* schema.
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*/
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void
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sepgsql_schema_post_create(Oid namespaceId)
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{
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char *scontext = sepgsql_get_client_label();
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char *tcontext;
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char *ncontext;
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ObjectAddress object;
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/*
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* FIXME: Right now, we assume pg_database object has a fixed
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* security label, because pg_seclabel does not support to store
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* label of shared database objects.
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*/
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tcontext = "system_u:object_r:sepgsql_db_t:s0";
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/*
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* Compute a default security label when we create a new schema
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* object under the working database.
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*/
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ncontext = sepgsql_compute_create(scontext, tcontext,
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SEPG_CLASS_DB_SCHEMA);
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/*
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* Assign the default security label on a new procedure
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*/
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object.classId = NamespaceRelationId;
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object.objectId = namespaceId;
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object.objectSubId = 0;
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SetSecurityLabel(&object, SEPGSQL_LABEL_TAG, ncontext);
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pfree(ncontext);
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}
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/*
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* sepgsql_schema_relabel
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*
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* It checks privileges to relabel the supplied schema
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* by the `seclabel'.
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*/
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void
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sepgsql_schema_relabel(Oid namespaceId, const char *seclabel)
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{
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char *scontext = sepgsql_get_client_label();
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char *tcontext;
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char *audit_name;
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audit_name = getObjectDescriptionOids(NamespaceRelationId, namespaceId);
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/*
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* check db_schema:{setattr relabelfrom} permission
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*/
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tcontext = sepgsql_get_label(NamespaceRelationId, namespaceId, 0);
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sepgsql_check_perms(scontext,
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tcontext,
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SEPG_CLASS_DB_SCHEMA,
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SEPG_DB_SCHEMA__SETATTR |
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SEPG_DB_SCHEMA__RELABELFROM,
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audit_name,
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true);
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/*
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* check db_schema:{relabelto} permission
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*/
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sepgsql_check_perms(scontext,
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seclabel,
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SEPG_CLASS_DB_SCHEMA,
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SEPG_DB_SCHEMA__RELABELTO,
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audit_name,
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true);
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pfree(tcontext);
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pfree(audit_name);
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}
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