greenplumn dummy_seclabel 源码
greenplumn dummy_seclabel 代码
文件路径：/src/test/modules/dummy_seclabel/dummy_seclabel.c
/*
* dummy_seclabel.c
*
* Dummy security label provider.
*
* This module does not provide anything worthwhile from a security
* perspective, but allows regression testing independent of platform-specific
* features like SELinux.
*
* Portions Copyright (c) 1996-2019, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*/
#include "postgres.h"
#include "commands/seclabel.h"
#include "miscadmin.h"
#include "utils/rel.h"
PG_MODULE_MAGIC;
/* Entrypoint of the module */
void _PG_init(void);
PG_FUNCTION_INFO_V1(dummy_seclabel_dummy);
static void
dummy_object_relabel(const ObjectAddress *object, const char *seclabel)
{
if (seclabel == NULL ||
strcmp(seclabel, "unclassified") == 0 ||
strcmp(seclabel, "classified") == 0)
return;
if (strcmp(seclabel, "secret") == 0 ||
strcmp(seclabel, "top secret") == 0)
{
if (!superuser())
ereport(ERROR,
(errcode(ERRCODE_INSUFFICIENT_PRIVILEGE),
errmsg("only superuser can set '%s' label", seclabel)));
return;
}
ereport(ERROR,
(errcode(ERRCODE_INVALID_NAME),
errmsg("'%s' is not a valid security label", seclabel)));
}
void
_PG_init(void)
{
register_label_provider("dummy", dummy_object_relabel);
}
/*
* This function is here just so that the extension is not completely empty
* and the dynamic library is loaded when CREATE EXTENSION runs.
*/
Datum
dummy_seclabel_dummy(PG_FUNCTION_ARGS)
{
PG_RETURN_VOID();
}
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