// SPDX-License-Identifier: GPL-2.0-or-later
/*
* NetLabel NETLINK Interface
*
* This file defines the NETLINK interface for the NetLabel system . The
* NetLabel system manages static and dynamic label mappings for network
* protocols such as CIPSO and RIPSO .
*
* Author : Paul Moore < paul @ paul - moore . com >
*/
/*
* ( c ) Copyright Hewlett - Packard Development Company , L . P . , 2006
*/
#include <linux/init.h>
#include <linux/types.h>
#include <linux/list.h>
#include <linux/socket.h>
#include <linux/audit.h>
#include <linux/tty.h>
#include <linux/security.h>
#include <linux/gfp.h>
#include <net/sock.h>
#include <net/netlink.h>
#include <net/genetlink.h>
#include <net/netlabel.h>
#include <asm /bug.h>
#include "netlabel_mgmt.h"
#include "netlabel_unlabeled.h"
#include "netlabel_cipso_v4.h"
#include "netlabel_calipso.h"
#include "netlabel_user.h"
/*
* NetLabel NETLINK Setup Functions
*/
/**
* netlbl_netlink_init - Initialize the NETLINK communication channel
*
* Description :
* Call out to the NetLabel components so they can register their families and
* commands with the Generic NETLINK mechanism . Returns zero on success and
* non - zero on failure .
*
*/
int __init netlbl_netlink_init(void )
{
int ret_val;
ret_val = netlbl_mgmt_genl_init();
if (ret_val != 0 )
return ret_val;
ret_val = netlbl_cipsov4_genl_init();
if (ret_val != 0 )
return ret_val;
ret_val = netlbl_calipso_genl_init();
if (ret_val != 0 )
return ret_val;
return netlbl_unlabel_genl_init();
}
/*
* NetLabel Audit Functions
*/
/**
* netlbl_audit_start_common - Start an audit message
* @ type : audit message type
* @ audit_info : NetLabel audit information
*
* Description :
* Start an audit message using the type specified in @ type and fill the audit
* message with some fields common to all NetLabel audit messages . Returns
* a pointer to the audit buffer on success , NULL on failure .
*
*/
struct audit_buffer *netlbl_audit_start_common(int type,
struct netlbl_audit *audit_info)
{
struct audit_buffer *audit_buf;
struct lsm_context ctx;
if (audit_enabled == AUDIT_OFF)
return NULL;
audit_buf = audit_log_start(audit_context(), GFP_ATOMIC, type);
if (audit_buf == NULL)
return NULL;
audit_log_format(audit_buf, "netlabel: auid=%u ses=%u" ,
from_kuid(&init_user_ns, audit_info->loginuid),
audit_info->sessionid);
if (lsmprop_is_set(&audit_info->prop) &&
security_lsmprop_to_secctx(&audit_info->prop, &ctx) > 0 ) {
audit_log_format(audit_buf, " subj=%s" , ctx.context);
security_release_secctx(&ctx);
}
return audit_buf;
}
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(vorverarbeitet am 2026-09-27)
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