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85ff537962
Create a new audit record type to contain the subject information when there are multiple security modules that require such data. This record is linked with the same timestamp and serial number. The record is produced only in cases where there is more than one security module with a process "context". Before this change the only audit events that required multiple records were syscall events. Several non-syscall events include subject contexts, so the use of audit_context data has been expanded as necessary. Signed-off-by: Casey Schaufler <casey@schaufler-ca.com> Cc: linux-audit@redhat.com Signed-off-by: John Johansen <john.johansen@canonical.com> Acked-by: Andrea Righi <andrea.righi@canonical.com> Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
106 lines
2.4 KiB
C
106 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* NetLabel NETLINK Interface
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*
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* This file defines the NETLINK interface for the NetLabel system. The
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* NetLabel system manages static and dynamic label mappings for network
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* protocols such as CIPSO and RIPSO.
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*
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* Author: Paul Moore <paul@paul-moore.com>
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*/
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/*
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* (c) Copyright Hewlett-Packard Development Company, L.P., 2006
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*/
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/list.h>
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#include <linux/socket.h>
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#include <linux/audit.h>
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#include <linux/tty.h>
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#include <linux/security.h>
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#include <linux/gfp.h>
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#include <net/sock.h>
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#include <net/netlink.h>
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#include <net/genetlink.h>
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#include <net/netlabel.h>
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#include <asm/bug.h>
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#include "netlabel_mgmt.h"
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#include "netlabel_unlabeled.h"
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#include "netlabel_cipso_v4.h"
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#include "netlabel_calipso.h"
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#include "netlabel_user.h"
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/*
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* NetLabel NETLINK Setup Functions
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*/
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/**
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* netlbl_netlink_init - Initialize the NETLINK communication channel
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*
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* Description:
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* Call out to the NetLabel components so they can register their families and
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* commands with the Generic NETLINK mechanism. Returns zero on success and
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* non-zero on failure.
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*
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*/
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int __init netlbl_netlink_init(void)
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{
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int ret_val;
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ret_val = netlbl_mgmt_genl_init();
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if (ret_val != 0)
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return ret_val;
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ret_val = netlbl_cipsov4_genl_init();
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if (ret_val != 0)
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return ret_val;
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ret_val = netlbl_calipso_genl_init();
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if (ret_val != 0)
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return ret_val;
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return netlbl_unlabel_genl_init();
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}
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/*
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* NetLabel Audit Functions
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*/
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/**
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* netlbl_audit_start_common - Start an audit message
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* @type: audit message type
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* @audit_info: NetLabel audit information
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*
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* Description:
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* Start an audit message using the type specified in @type and fill the audit
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* message with some fields common to all NetLabel audit messages. Returns
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* a pointer to the audit buffer on success, NULL on failure.
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*
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*/
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struct audit_buffer *netlbl_audit_start_common(int type,
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struct netlbl_audit *audit_info)
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{
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struct audit_buffer *audit_buf;
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if (audit_enabled == AUDIT_OFF)
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return NULL;
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audit_stamp_context(audit_context());
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audit_buf = audit_log_start(audit_context(), GFP_ATOMIC, type);
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if (audit_buf == NULL)
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return NULL;
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audit_log_format(audit_buf, "netlabel: auid=%u ses=%u",
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from_kuid(&init_user_ns, audit_info->loginuid),
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audit_info->sessionid);
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audit_log_task_context(audit_buf, &audit_info->lsmdata);
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audit_log_lsm(&audit_info->lsmdata, false);
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return audit_buf;
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}
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