/* * 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.moore@hp.com> * */ /* * (c) Copyright Hewlett-Packard Development Company, L.P., 2006 * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See * the GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA * */ #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 <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_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 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_unlabel_genl_init(); if (ret_val != 0) return ret_val; return 0; } /* * 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_context *audit_ctx = current->audit_context; struct audit_buffer *audit_buf; char *secctx; u32 secctx_len; if (audit_enabled == 0) return NULL; audit_buf = audit_log_start(audit_ctx, GFP_ATOMIC, type); if (audit_buf == NULL) return NULL; audit_log_format(audit_buf, "netlabel: auid=%u", audit_info->loginuid); if (audit_info->secid != 0 && security_secid_to_secctx(audit_info->secid, &secctx, &secctx_len) == 0) { audit_log_format(audit_buf, " subj=%s", secctx); security_release_secctx(secctx, secctx_len); } return audit_buf; }